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UBUNTU: Ubuntu-4.10.0-37.41
[mirror_ubuntu-zesty-kernel.git] / drivers / net / ethernet / intel / ixgbe / ixgbe_main.c
1 /*******************************************************************************
2
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2016 Intel Corporation.
5
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
9
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 more details.
14
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
22 Contact Information:
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26
27 *******************************************************************************/
28
29 #include <linux/types.h>
30 #include <linux/module.h>
31 #include <linux/pci.h>
32 #include <linux/netdevice.h>
33 #include <linux/vmalloc.h>
34 #include <linux/string.h>
35 #include <linux/in.h>
36 #include <linux/interrupt.h>
37 #include <linux/ip.h>
38 #include <linux/tcp.h>
39 #include <linux/sctp.h>
40 #include <linux/pkt_sched.h>
41 #include <linux/ipv6.h>
42 #include <linux/slab.h>
43 #include <net/checksum.h>
44 #include <net/ip6_checksum.h>
45 #include <linux/etherdevice.h>
46 #include <linux/ethtool.h>
47 #include <linux/if.h>
48 #include <linux/if_vlan.h>
49 #include <linux/if_macvlan.h>
50 #include <linux/if_bridge.h>
51 #include <linux/prefetch.h>
52 #include <scsi/fc/fc_fcoe.h>
53 #include <net/udp_tunnel.h>
54 #include <net/pkt_cls.h>
55 #include <net/tc_act/tc_gact.h>
56 #include <net/tc_act/tc_mirred.h>
57 #include <net/vxlan.h>
58
59 #include "ixgbe.h"
60 #include "ixgbe_common.h"
61 #include "ixgbe_dcb_82599.h"
62 #include "ixgbe_sriov.h"
63 #include "ixgbe_model.h"
64
65 char ixgbe_driver_name[] = "ixgbe";
66 static const char ixgbe_driver_string[] =
67 "Intel(R) 10 Gigabit PCI Express Network Driver";
68 #ifdef IXGBE_FCOE
69 char ixgbe_default_device_descr[] =
70 "Intel(R) 10 Gigabit Network Connection";
71 #else
72 static char ixgbe_default_device_descr[] =
73 "Intel(R) 10 Gigabit Network Connection";
74 #endif
75 #define DRV_VERSION "4.4.0-k"
76 const char ixgbe_driver_version[] = DRV_VERSION;
77 static const char ixgbe_copyright[] =
78 "Copyright (c) 1999-2016 Intel Corporation.";
79
80 static const char ixgbe_overheat_msg[] = "Network adapter has been stopped because it has over heated. Restart the computer. If the problem persists, power off the system and replace the adapter";
81
82 static const struct ixgbe_info *ixgbe_info_tbl[] = {
83 [board_82598] = &ixgbe_82598_info,
84 [board_82599] = &ixgbe_82599_info,
85 [board_X540] = &ixgbe_X540_info,
86 [board_X550] = &ixgbe_X550_info,
87 [board_X550EM_x] = &ixgbe_X550EM_x_info,
88 [board_x550em_a] = &ixgbe_x550em_a_info,
89 };
90
91 /* ixgbe_pci_tbl - PCI Device ID Table
92 *
93 * Wildcard entries (PCI_ANY_ID) should come last
94 * Last entry must be all 0s
95 *
96 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
97 * Class, Class Mask, private data (not used) }
98 */
99 static const struct pci_device_id ixgbe_pci_tbl[] = {
100 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598), board_82598 },
101 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT), board_82598 },
102 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT), board_82598 },
103 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT), board_82598 },
104 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT2), board_82598 },
105 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4), board_82598 },
106 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_CX4_DUAL_PORT), board_82598 },
107 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_DA_DUAL_PORT), board_82598 },
108 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM), board_82598 },
109 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_XF_LR), board_82598 },
110 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_SFP_LOM), board_82598 },
111 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_BX), board_82598 },
112 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4), board_82599 },
113 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_XAUI_LOM), board_82599 },
114 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KR), board_82599 },
115 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP), board_82599 },
116 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_EM), board_82599 },
117 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4_MEZZ), board_82599 },
118 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_CX4), board_82599 },
119 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_BACKPLANE_FCOE), board_82599 },
120 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_FCOE), board_82599 },
121 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_T3_LOM), board_82599 },
122 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_COMBO_BACKPLANE), board_82599 },
123 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540T), board_X540 },
124 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_SF2), board_82599 },
125 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_LS), board_82599 },
126 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_QSFP_SF_QP), board_82599 },
127 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599EN_SFP), board_82599 },
128 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_SF_QP), board_82599 },
129 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540T1), board_X540 },
130 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550T), board_X550},
131 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550T1), board_X550},
132 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_KX4), board_X550EM_x},
133 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_KR), board_X550EM_x},
134 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_10G_T), board_X550EM_x},
135 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_SFP), board_X550EM_x},
136 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_KR), board_x550em_a },
137 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_KR_L), board_x550em_a },
138 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SFP_N), board_x550em_a },
139 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SGMII), board_x550em_a },
140 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SGMII_L), board_x550em_a },
141 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_10G_T), board_x550em_a},
142 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SFP), board_x550em_a },
143 /* required last entry */
144 {0, }
145 };
146 MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl);
147
148 #ifdef CONFIG_IXGBE_DCA
149 static int ixgbe_notify_dca(struct notifier_block *, unsigned long event,
150 void *p);
151 static struct notifier_block dca_notifier = {
152 .notifier_call = ixgbe_notify_dca,
153 .next = NULL,
154 .priority = 0
155 };
156 #endif
157
158 #ifdef CONFIG_PCI_IOV
159 static unsigned int max_vfs;
160 module_param(max_vfs, uint, 0);
161 MODULE_PARM_DESC(max_vfs,
162 "Maximum number of virtual functions to allocate per physical function - default is zero and maximum value is 63. (Deprecated)");
163 #endif /* CONFIG_PCI_IOV */
164
165 static unsigned int allow_unsupported_sfp;
166 module_param(allow_unsupported_sfp, uint, 0);
167 MODULE_PARM_DESC(allow_unsupported_sfp,
168 "Allow unsupported and untested SFP+ modules on 82599-based adapters");
169
170 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
171 static int debug = -1;
172 module_param(debug, int, 0);
173 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
174
175 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
176 MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver");
177 MODULE_LICENSE("GPL");
178 MODULE_VERSION(DRV_VERSION);
179
180 static struct workqueue_struct *ixgbe_wq;
181
182 static bool ixgbe_check_cfg_remove(struct ixgbe_hw *hw, struct pci_dev *pdev);
183
184 static int ixgbe_read_pci_cfg_word_parent(struct ixgbe_adapter *adapter,
185 u32 reg, u16 *value)
186 {
187 struct pci_dev *parent_dev;
188 struct pci_bus *parent_bus;
189
190 parent_bus = adapter->pdev->bus->parent;
191 if (!parent_bus)
192 return -1;
193
194 parent_dev = parent_bus->self;
195 if (!parent_dev)
196 return -1;
197
198 if (!pci_is_pcie(parent_dev))
199 return -1;
200
201 pcie_capability_read_word(parent_dev, reg, value);
202 if (*value == IXGBE_FAILED_READ_CFG_WORD &&
203 ixgbe_check_cfg_remove(&adapter->hw, parent_dev))
204 return -1;
205 return 0;
206 }
207
208 static s32 ixgbe_get_parent_bus_info(struct ixgbe_adapter *adapter)
209 {
210 struct ixgbe_hw *hw = &adapter->hw;
211 u16 link_status = 0;
212 int err;
213
214 hw->bus.type = ixgbe_bus_type_pci_express;
215
216 /* Get the negotiated link width and speed from PCI config space of the
217 * parent, as this device is behind a switch
218 */
219 err = ixgbe_read_pci_cfg_word_parent(adapter, 18, &link_status);
220
221 /* assume caller will handle error case */
222 if (err)
223 return err;
224
225 hw->bus.width = ixgbe_convert_bus_width(link_status);
226 hw->bus.speed = ixgbe_convert_bus_speed(link_status);
227
228 return 0;
229 }
230
231 /**
232 * ixgbe_check_from_parent - Determine whether PCIe info should come from parent
233 * @hw: hw specific details
234 *
235 * This function is used by probe to determine whether a device's PCI-Express
236 * bandwidth details should be gathered from the parent bus instead of from the
237 * device. Used to ensure that various locations all have the correct device ID
238 * checks.
239 */
240 static inline bool ixgbe_pcie_from_parent(struct ixgbe_hw *hw)
241 {
242 switch (hw->device_id) {
243 case IXGBE_DEV_ID_82599_SFP_SF_QP:
244 case IXGBE_DEV_ID_82599_QSFP_SF_QP:
245 return true;
246 default:
247 return false;
248 }
249 }
250
251 static void ixgbe_check_minimum_link(struct ixgbe_adapter *adapter,
252 int expected_gts)
253 {
254 struct ixgbe_hw *hw = &adapter->hw;
255 int max_gts = 0;
256 enum pci_bus_speed speed = PCI_SPEED_UNKNOWN;
257 enum pcie_link_width width = PCIE_LNK_WIDTH_UNKNOWN;
258 struct pci_dev *pdev;
259
260 /* Some devices are not connected over PCIe and thus do not negotiate
261 * speed. These devices do not have valid bus info, and thus any report
262 * we generate may not be correct.
263 */
264 if (hw->bus.type == ixgbe_bus_type_internal)
265 return;
266
267 /* determine whether to use the parent device */
268 if (ixgbe_pcie_from_parent(&adapter->hw))
269 pdev = adapter->pdev->bus->parent->self;
270 else
271 pdev = adapter->pdev;
272
273 if (pcie_get_minimum_link(pdev, &speed, &width) ||
274 speed == PCI_SPEED_UNKNOWN || width == PCIE_LNK_WIDTH_UNKNOWN) {
275 e_dev_warn("Unable to determine PCI Express bandwidth.\n");
276 return;
277 }
278
279 switch (speed) {
280 case PCIE_SPEED_2_5GT:
281 /* 8b/10b encoding reduces max throughput by 20% */
282 max_gts = 2 * width;
283 break;
284 case PCIE_SPEED_5_0GT:
285 /* 8b/10b encoding reduces max throughput by 20% */
286 max_gts = 4 * width;
287 break;
288 case PCIE_SPEED_8_0GT:
289 /* 128b/130b encoding reduces throughput by less than 2% */
290 max_gts = 8 * width;
291 break;
292 default:
293 e_dev_warn("Unable to determine PCI Express bandwidth.\n");
294 return;
295 }
296
297 e_dev_info("PCI Express bandwidth of %dGT/s available\n",
298 max_gts);
299 e_dev_info("(Speed:%s, Width: x%d, Encoding Loss:%s)\n",
300 (speed == PCIE_SPEED_8_0GT ? "8.0GT/s" :
301 speed == PCIE_SPEED_5_0GT ? "5.0GT/s" :
302 speed == PCIE_SPEED_2_5GT ? "2.5GT/s" :
303 "Unknown"),
304 width,
305 (speed == PCIE_SPEED_2_5GT ? "20%" :
306 speed == PCIE_SPEED_5_0GT ? "20%" :
307 speed == PCIE_SPEED_8_0GT ? "<2%" :
308 "Unknown"));
309
310 if (max_gts < expected_gts) {
311 e_dev_warn("This is not sufficient for optimal performance of this card.\n");
312 e_dev_warn("For optimal performance, at least %dGT/s of bandwidth is required.\n",
313 expected_gts);
314 e_dev_warn("A slot with more lanes and/or higher speed is suggested.\n");
315 }
316 }
317
318 static void ixgbe_service_event_schedule(struct ixgbe_adapter *adapter)
319 {
320 if (!test_bit(__IXGBE_DOWN, &adapter->state) &&
321 !test_bit(__IXGBE_REMOVING, &adapter->state) &&
322 !test_and_set_bit(__IXGBE_SERVICE_SCHED, &adapter->state))
323 queue_work(ixgbe_wq, &adapter->service_task);
324 }
325
326 static void ixgbe_remove_adapter(struct ixgbe_hw *hw)
327 {
328 struct ixgbe_adapter *adapter = hw->back;
329
330 if (!hw->hw_addr)
331 return;
332 hw->hw_addr = NULL;
333 e_dev_err("Adapter removed\n");
334 if (test_bit(__IXGBE_SERVICE_INITED, &adapter->state))
335 ixgbe_service_event_schedule(adapter);
336 }
337
338 static void ixgbe_check_remove(struct ixgbe_hw *hw, u32 reg)
339 {
340 u32 value;
341
342 /* The following check not only optimizes a bit by not
343 * performing a read on the status register when the
344 * register just read was a status register read that
345 * returned IXGBE_FAILED_READ_REG. It also blocks any
346 * potential recursion.
347 */
348 if (reg == IXGBE_STATUS) {
349 ixgbe_remove_adapter(hw);
350 return;
351 }
352 value = ixgbe_read_reg(hw, IXGBE_STATUS);
353 if (value == IXGBE_FAILED_READ_REG)
354 ixgbe_remove_adapter(hw);
355 }
356
357 /**
358 * ixgbe_read_reg - Read from device register
359 * @hw: hw specific details
360 * @reg: offset of register to read
361 *
362 * Returns : value read or IXGBE_FAILED_READ_REG if removed
363 *
364 * This function is used to read device registers. It checks for device
365 * removal by confirming any read that returns all ones by checking the
366 * status register value for all ones. This function avoids reading from
367 * the hardware if a removal was previously detected in which case it
368 * returns IXGBE_FAILED_READ_REG (all ones).
369 */
370 u32 ixgbe_read_reg(struct ixgbe_hw *hw, u32 reg)
371 {
372 u8 __iomem *reg_addr = ACCESS_ONCE(hw->hw_addr);
373 u32 value;
374
375 if (ixgbe_removed(reg_addr))
376 return IXGBE_FAILED_READ_REG;
377 if (unlikely(hw->phy.nw_mng_if_sel &
378 IXGBE_NW_MNG_IF_SEL_ENABLE_10_100M)) {
379 struct ixgbe_adapter *adapter;
380 int i;
381
382 for (i = 0; i < 200; ++i) {
383 value = readl(reg_addr + IXGBE_MAC_SGMII_BUSY);
384 if (likely(!value))
385 goto writes_completed;
386 if (value == IXGBE_FAILED_READ_REG) {
387 ixgbe_remove_adapter(hw);
388 return IXGBE_FAILED_READ_REG;
389 }
390 udelay(5);
391 }
392
393 adapter = hw->back;
394 e_warn(hw, "register writes incomplete %08x\n", value);
395 }
396
397 writes_completed:
398 value = readl(reg_addr + reg);
399 if (unlikely(value == IXGBE_FAILED_READ_REG))
400 ixgbe_check_remove(hw, reg);
401 return value;
402 }
403
404 static bool ixgbe_check_cfg_remove(struct ixgbe_hw *hw, struct pci_dev *pdev)
405 {
406 u16 value;
407
408 pci_read_config_word(pdev, PCI_VENDOR_ID, &value);
409 if (value == IXGBE_FAILED_READ_CFG_WORD) {
410 ixgbe_remove_adapter(hw);
411 return true;
412 }
413 return false;
414 }
415
416 u16 ixgbe_read_pci_cfg_word(struct ixgbe_hw *hw, u32 reg)
417 {
418 struct ixgbe_adapter *adapter = hw->back;
419 u16 value;
420
421 if (ixgbe_removed(hw->hw_addr))
422 return IXGBE_FAILED_READ_CFG_WORD;
423 pci_read_config_word(adapter->pdev, reg, &value);
424 if (value == IXGBE_FAILED_READ_CFG_WORD &&
425 ixgbe_check_cfg_remove(hw, adapter->pdev))
426 return IXGBE_FAILED_READ_CFG_WORD;
427 return value;
428 }
429
430 #ifdef CONFIG_PCI_IOV
431 static u32 ixgbe_read_pci_cfg_dword(struct ixgbe_hw *hw, u32 reg)
432 {
433 struct ixgbe_adapter *adapter = hw->back;
434 u32 value;
435
436 if (ixgbe_removed(hw->hw_addr))
437 return IXGBE_FAILED_READ_CFG_DWORD;
438 pci_read_config_dword(adapter->pdev, reg, &value);
439 if (value == IXGBE_FAILED_READ_CFG_DWORD &&
440 ixgbe_check_cfg_remove(hw, adapter->pdev))
441 return IXGBE_FAILED_READ_CFG_DWORD;
442 return value;
443 }
444 #endif /* CONFIG_PCI_IOV */
445
446 void ixgbe_write_pci_cfg_word(struct ixgbe_hw *hw, u32 reg, u16 value)
447 {
448 struct ixgbe_adapter *adapter = hw->back;
449
450 if (ixgbe_removed(hw->hw_addr))
451 return;
452 pci_write_config_word(adapter->pdev, reg, value);
453 }
454
455 static void ixgbe_service_event_complete(struct ixgbe_adapter *adapter)
456 {
457 BUG_ON(!test_bit(__IXGBE_SERVICE_SCHED, &adapter->state));
458
459 /* flush memory to make sure state is correct before next watchdog */
460 smp_mb__before_atomic();
461 clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state);
462 }
463
464 struct ixgbe_reg_info {
465 u32 ofs;
466 char *name;
467 };
468
469 static const struct ixgbe_reg_info ixgbe_reg_info_tbl[] = {
470
471 /* General Registers */
472 {IXGBE_CTRL, "CTRL"},
473 {IXGBE_STATUS, "STATUS"},
474 {IXGBE_CTRL_EXT, "CTRL_EXT"},
475
476 /* Interrupt Registers */
477 {IXGBE_EICR, "EICR"},
478
479 /* RX Registers */
480 {IXGBE_SRRCTL(0), "SRRCTL"},
481 {IXGBE_DCA_RXCTRL(0), "DRXCTL"},
482 {IXGBE_RDLEN(0), "RDLEN"},
483 {IXGBE_RDH(0), "RDH"},
484 {IXGBE_RDT(0), "RDT"},
485 {IXGBE_RXDCTL(0), "RXDCTL"},
486 {IXGBE_RDBAL(0), "RDBAL"},
487 {IXGBE_RDBAH(0), "RDBAH"},
488
489 /* TX Registers */
490 {IXGBE_TDBAL(0), "TDBAL"},
491 {IXGBE_TDBAH(0), "TDBAH"},
492 {IXGBE_TDLEN(0), "TDLEN"},
493 {IXGBE_TDH(0), "TDH"},
494 {IXGBE_TDT(0), "TDT"},
495 {IXGBE_TXDCTL(0), "TXDCTL"},
496
497 /* List Terminator */
498 { .name = NULL }
499 };
500
501
502 /*
503 * ixgbe_regdump - register printout routine
504 */
505 static void ixgbe_regdump(struct ixgbe_hw *hw, struct ixgbe_reg_info *reginfo)
506 {
507 int i = 0, j = 0;
508 char rname[16];
509 u32 regs[64];
510
511 switch (reginfo->ofs) {
512 case IXGBE_SRRCTL(0):
513 for (i = 0; i < 64; i++)
514 regs[i] = IXGBE_READ_REG(hw, IXGBE_SRRCTL(i));
515 break;
516 case IXGBE_DCA_RXCTRL(0):
517 for (i = 0; i < 64; i++)
518 regs[i] = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i));
519 break;
520 case IXGBE_RDLEN(0):
521 for (i = 0; i < 64; i++)
522 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDLEN(i));
523 break;
524 case IXGBE_RDH(0):
525 for (i = 0; i < 64; i++)
526 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDH(i));
527 break;
528 case IXGBE_RDT(0):
529 for (i = 0; i < 64; i++)
530 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDT(i));
531 break;
532 case IXGBE_RXDCTL(0):
533 for (i = 0; i < 64; i++)
534 regs[i] = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i));
535 break;
536 case IXGBE_RDBAL(0):
537 for (i = 0; i < 64; i++)
538 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAL(i));
539 break;
540 case IXGBE_RDBAH(0):
541 for (i = 0; i < 64; i++)
542 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAH(i));
543 break;
544 case IXGBE_TDBAL(0):
545 for (i = 0; i < 64; i++)
546 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAL(i));
547 break;
548 case IXGBE_TDBAH(0):
549 for (i = 0; i < 64; i++)
550 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAH(i));
551 break;
552 case IXGBE_TDLEN(0):
553 for (i = 0; i < 64; i++)
554 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDLEN(i));
555 break;
556 case IXGBE_TDH(0):
557 for (i = 0; i < 64; i++)
558 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDH(i));
559 break;
560 case IXGBE_TDT(0):
561 for (i = 0; i < 64; i++)
562 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDT(i));
563 break;
564 case IXGBE_TXDCTL(0):
565 for (i = 0; i < 64; i++)
566 regs[i] = IXGBE_READ_REG(hw, IXGBE_TXDCTL(i));
567 break;
568 default:
569 pr_info("%-15s %08x\n", reginfo->name,
570 IXGBE_READ_REG(hw, reginfo->ofs));
571 return;
572 }
573
574 for (i = 0; i < 8; i++) {
575 snprintf(rname, 16, "%s[%d-%d]", reginfo->name, i*8, i*8+7);
576 pr_err("%-15s", rname);
577 for (j = 0; j < 8; j++)
578 pr_cont(" %08x", regs[i*8+j]);
579 pr_cont("\n");
580 }
581
582 }
583
584 /*
585 * ixgbe_dump - Print registers, tx-rings and rx-rings
586 */
587 static void ixgbe_dump(struct ixgbe_adapter *adapter)
588 {
589 struct net_device *netdev = adapter->netdev;
590 struct ixgbe_hw *hw = &adapter->hw;
591 struct ixgbe_reg_info *reginfo;
592 int n = 0;
593 struct ixgbe_ring *tx_ring;
594 struct ixgbe_tx_buffer *tx_buffer;
595 union ixgbe_adv_tx_desc *tx_desc;
596 struct my_u0 { u64 a; u64 b; } *u0;
597 struct ixgbe_ring *rx_ring;
598 union ixgbe_adv_rx_desc *rx_desc;
599 struct ixgbe_rx_buffer *rx_buffer_info;
600 u32 staterr;
601 int i = 0;
602
603 if (!netif_msg_hw(adapter))
604 return;
605
606 /* Print netdevice Info */
607 if (netdev) {
608 dev_info(&adapter->pdev->dev, "Net device Info\n");
609 pr_info("Device Name state "
610 "trans_start last_rx\n");
611 pr_info("%-15s %016lX %016lX %016lX\n",
612 netdev->name,
613 netdev->state,
614 dev_trans_start(netdev),
615 netdev->last_rx);
616 }
617
618 /* Print Registers */
619 dev_info(&adapter->pdev->dev, "Register Dump\n");
620 pr_info(" Register Name Value\n");
621 for (reginfo = (struct ixgbe_reg_info *)ixgbe_reg_info_tbl;
622 reginfo->name; reginfo++) {
623 ixgbe_regdump(hw, reginfo);
624 }
625
626 /* Print TX Ring Summary */
627 if (!netdev || !netif_running(netdev))
628 return;
629
630 dev_info(&adapter->pdev->dev, "TX Rings Summary\n");
631 pr_info(" %s %s %s %s\n",
632 "Queue [NTU] [NTC] [bi(ntc)->dma ]",
633 "leng", "ntw", "timestamp");
634 for (n = 0; n < adapter->num_tx_queues; n++) {
635 tx_ring = adapter->tx_ring[n];
636 tx_buffer = &tx_ring->tx_buffer_info[tx_ring->next_to_clean];
637 pr_info(" %5d %5X %5X %016llX %08X %p %016llX\n",
638 n, tx_ring->next_to_use, tx_ring->next_to_clean,
639 (u64)dma_unmap_addr(tx_buffer, dma),
640 dma_unmap_len(tx_buffer, len),
641 tx_buffer->next_to_watch,
642 (u64)tx_buffer->time_stamp);
643 }
644
645 /* Print TX Rings */
646 if (!netif_msg_tx_done(adapter))
647 goto rx_ring_summary;
648
649 dev_info(&adapter->pdev->dev, "TX Rings Dump\n");
650
651 /* Transmit Descriptor Formats
652 *
653 * 82598 Advanced Transmit Descriptor
654 * +--------------------------------------------------------------+
655 * 0 | Buffer Address [63:0] |
656 * +--------------------------------------------------------------+
657 * 8 | PAYLEN | POPTS | IDX | STA | DCMD |DTYP | RSV | DTALEN |
658 * +--------------------------------------------------------------+
659 * 63 46 45 40 39 36 35 32 31 24 23 20 19 0
660 *
661 * 82598 Advanced Transmit Descriptor (Write-Back Format)
662 * +--------------------------------------------------------------+
663 * 0 | RSV [63:0] |
664 * +--------------------------------------------------------------+
665 * 8 | RSV | STA | NXTSEQ |
666 * +--------------------------------------------------------------+
667 * 63 36 35 32 31 0
668 *
669 * 82599+ Advanced Transmit Descriptor
670 * +--------------------------------------------------------------+
671 * 0 | Buffer Address [63:0] |
672 * +--------------------------------------------------------------+
673 * 8 |PAYLEN |POPTS|CC|IDX |STA |DCMD |DTYP |MAC |RSV |DTALEN |
674 * +--------------------------------------------------------------+
675 * 63 46 45 40 39 38 36 35 32 31 24 23 20 19 18 17 16 15 0
676 *
677 * 82599+ Advanced Transmit Descriptor (Write-Back Format)
678 * +--------------------------------------------------------------+
679 * 0 | RSV [63:0] |
680 * +--------------------------------------------------------------+
681 * 8 | RSV | STA | RSV |
682 * +--------------------------------------------------------------+
683 * 63 36 35 32 31 0
684 */
685
686 for (n = 0; n < adapter->num_tx_queues; n++) {
687 tx_ring = adapter->tx_ring[n];
688 pr_info("------------------------------------\n");
689 pr_info("TX QUEUE INDEX = %d\n", tx_ring->queue_index);
690 pr_info("------------------------------------\n");
691 pr_info("%s%s %s %s %s %s\n",
692 "T [desc] [address 63:0 ] ",
693 "[PlPOIdStDDt Ln] [bi->dma ] ",
694 "leng", "ntw", "timestamp", "bi->skb");
695
696 for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
697 tx_desc = IXGBE_TX_DESC(tx_ring, i);
698 tx_buffer = &tx_ring->tx_buffer_info[i];
699 u0 = (struct my_u0 *)tx_desc;
700 if (dma_unmap_len(tx_buffer, len) > 0) {
701 pr_info("T [0x%03X] %016llX %016llX %016llX %08X %p %016llX %p",
702 i,
703 le64_to_cpu(u0->a),
704 le64_to_cpu(u0->b),
705 (u64)dma_unmap_addr(tx_buffer, dma),
706 dma_unmap_len(tx_buffer, len),
707 tx_buffer->next_to_watch,
708 (u64)tx_buffer->time_stamp,
709 tx_buffer->skb);
710 if (i == tx_ring->next_to_use &&
711 i == tx_ring->next_to_clean)
712 pr_cont(" NTC/U\n");
713 else if (i == tx_ring->next_to_use)
714 pr_cont(" NTU\n");
715 else if (i == tx_ring->next_to_clean)
716 pr_cont(" NTC\n");
717 else
718 pr_cont("\n");
719
720 if (netif_msg_pktdata(adapter) &&
721 tx_buffer->skb)
722 print_hex_dump(KERN_INFO, "",
723 DUMP_PREFIX_ADDRESS, 16, 1,
724 tx_buffer->skb->data,
725 dma_unmap_len(tx_buffer, len),
726 true);
727 }
728 }
729 }
730
731 /* Print RX Rings Summary */
732 rx_ring_summary:
733 dev_info(&adapter->pdev->dev, "RX Rings Summary\n");
734 pr_info("Queue [NTU] [NTC]\n");
735 for (n = 0; n < adapter->num_rx_queues; n++) {
736 rx_ring = adapter->rx_ring[n];
737 pr_info("%5d %5X %5X\n",
738 n, rx_ring->next_to_use, rx_ring->next_to_clean);
739 }
740
741 /* Print RX Rings */
742 if (!netif_msg_rx_status(adapter))
743 return;
744
745 dev_info(&adapter->pdev->dev, "RX Rings Dump\n");
746
747 /* Receive Descriptor Formats
748 *
749 * 82598 Advanced Receive Descriptor (Read) Format
750 * 63 1 0
751 * +-----------------------------------------------------+
752 * 0 | Packet Buffer Address [63:1] |A0/NSE|
753 * +----------------------------------------------+------+
754 * 8 | Header Buffer Address [63:1] | DD |
755 * +-----------------------------------------------------+
756 *
757 *
758 * 82598 Advanced Receive Descriptor (Write-Back) Format
759 *
760 * 63 48 47 32 31 30 21 20 16 15 4 3 0
761 * +------------------------------------------------------+
762 * 0 | RSS Hash / |SPH| HDR_LEN | RSV |Packet| RSS |
763 * | Packet | IP | | | | Type | Type |
764 * | Checksum | Ident | | | | | |
765 * +------------------------------------------------------+
766 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
767 * +------------------------------------------------------+
768 * 63 48 47 32 31 20 19 0
769 *
770 * 82599+ Advanced Receive Descriptor (Read) Format
771 * 63 1 0
772 * +-----------------------------------------------------+
773 * 0 | Packet Buffer Address [63:1] |A0/NSE|
774 * +----------------------------------------------+------+
775 * 8 | Header Buffer Address [63:1] | DD |
776 * +-----------------------------------------------------+
777 *
778 *
779 * 82599+ Advanced Receive Descriptor (Write-Back) Format
780 *
781 * 63 48 47 32 31 30 21 20 17 16 4 3 0
782 * +------------------------------------------------------+
783 * 0 |RSS / Frag Checksum|SPH| HDR_LEN |RSC- |Packet| RSS |
784 * |/ RTT / PCoE_PARAM | | | CNT | Type | Type |
785 * |/ Flow Dir Flt ID | | | | | |
786 * +------------------------------------------------------+
787 * 8 | VLAN Tag | Length |Extended Error| Xtnd Status/NEXTP |
788 * +------------------------------------------------------+
789 * 63 48 47 32 31 20 19 0
790 */
791
792 for (n = 0; n < adapter->num_rx_queues; n++) {
793 rx_ring = adapter->rx_ring[n];
794 pr_info("------------------------------------\n");
795 pr_info("RX QUEUE INDEX = %d\n", rx_ring->queue_index);
796 pr_info("------------------------------------\n");
797 pr_info("%s%s%s",
798 "R [desc] [ PktBuf A0] ",
799 "[ HeadBuf DD] [bi->dma ] [bi->skb ] ",
800 "<-- Adv Rx Read format\n");
801 pr_info("%s%s%s",
802 "RWB[desc] [PcsmIpSHl PtRs] ",
803 "[vl er S cks ln] ---------------- [bi->skb ] ",
804 "<-- Adv Rx Write-Back format\n");
805
806 for (i = 0; i < rx_ring->count; i++) {
807 rx_buffer_info = &rx_ring->rx_buffer_info[i];
808 rx_desc = IXGBE_RX_DESC(rx_ring, i);
809 u0 = (struct my_u0 *)rx_desc;
810 staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
811 if (staterr & IXGBE_RXD_STAT_DD) {
812 /* Descriptor Done */
813 pr_info("RWB[0x%03X] %016llX "
814 "%016llX ---------------- %p", i,
815 le64_to_cpu(u0->a),
816 le64_to_cpu(u0->b),
817 rx_buffer_info->skb);
818 } else {
819 pr_info("R [0x%03X] %016llX "
820 "%016llX %016llX %p", i,
821 le64_to_cpu(u0->a),
822 le64_to_cpu(u0->b),
823 (u64)rx_buffer_info->dma,
824 rx_buffer_info->skb);
825
826 if (netif_msg_pktdata(adapter) &&
827 rx_buffer_info->dma) {
828 print_hex_dump(KERN_INFO, "",
829 DUMP_PREFIX_ADDRESS, 16, 1,
830 page_address(rx_buffer_info->page) +
831 rx_buffer_info->page_offset,
832 ixgbe_rx_bufsz(rx_ring), true);
833 }
834 }
835
836 if (i == rx_ring->next_to_use)
837 pr_cont(" NTU\n");
838 else if (i == rx_ring->next_to_clean)
839 pr_cont(" NTC\n");
840 else
841 pr_cont("\n");
842
843 }
844 }
845 }
846
847 static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter)
848 {
849 u32 ctrl_ext;
850
851 /* Let firmware take over control of h/w */
852 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
853 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
854 ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD);
855 }
856
857 static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter)
858 {
859 u32 ctrl_ext;
860
861 /* Let firmware know the driver has taken over */
862 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT);
863 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT,
864 ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD);
865 }
866
867 /**
868 * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors
869 * @adapter: pointer to adapter struct
870 * @direction: 0 for Rx, 1 for Tx, -1 for other causes
871 * @queue: queue to map the corresponding interrupt to
872 * @msix_vector: the vector to map to the corresponding queue
873 *
874 */
875 static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, s8 direction,
876 u8 queue, u8 msix_vector)
877 {
878 u32 ivar, index;
879 struct ixgbe_hw *hw = &adapter->hw;
880 switch (hw->mac.type) {
881 case ixgbe_mac_82598EB:
882 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
883 if (direction == -1)
884 direction = 0;
885 index = (((direction * 64) + queue) >> 2) & 0x1F;
886 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index));
887 ivar &= ~(0xFF << (8 * (queue & 0x3)));
888 ivar |= (msix_vector << (8 * (queue & 0x3)));
889 IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar);
890 break;
891 case ixgbe_mac_82599EB:
892 case ixgbe_mac_X540:
893 case ixgbe_mac_X550:
894 case ixgbe_mac_X550EM_x:
895 case ixgbe_mac_x550em_a:
896 if (direction == -1) {
897 /* other causes */
898 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
899 index = ((queue & 1) * 8);
900 ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR_MISC);
901 ivar &= ~(0xFF << index);
902 ivar |= (msix_vector << index);
903 IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR_MISC, ivar);
904 break;
905 } else {
906 /* tx or rx causes */
907 msix_vector |= IXGBE_IVAR_ALLOC_VAL;
908 index = ((16 * (queue & 1)) + (8 * direction));
909 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(queue >> 1));
910 ivar &= ~(0xFF << index);
911 ivar |= (msix_vector << index);
912 IXGBE_WRITE_REG(hw, IXGBE_IVAR(queue >> 1), ivar);
913 break;
914 }
915 default:
916 break;
917 }
918 }
919
920 static inline void ixgbe_irq_rearm_queues(struct ixgbe_adapter *adapter,
921 u64 qmask)
922 {
923 u32 mask;
924
925 switch (adapter->hw.mac.type) {
926 case ixgbe_mac_82598EB:
927 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
928 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, mask);
929 break;
930 case ixgbe_mac_82599EB:
931 case ixgbe_mac_X540:
932 case ixgbe_mac_X550:
933 case ixgbe_mac_X550EM_x:
934 case ixgbe_mac_x550em_a:
935 mask = (qmask & 0xFFFFFFFF);
936 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(0), mask);
937 mask = (qmask >> 32);
938 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(1), mask);
939 break;
940 default:
941 break;
942 }
943 }
944
945 void ixgbe_unmap_and_free_tx_resource(struct ixgbe_ring *ring,
946 struct ixgbe_tx_buffer *tx_buffer)
947 {
948 if (tx_buffer->skb) {
949 dev_kfree_skb_any(tx_buffer->skb);
950 if (dma_unmap_len(tx_buffer, len))
951 dma_unmap_single(ring->dev,
952 dma_unmap_addr(tx_buffer, dma),
953 dma_unmap_len(tx_buffer, len),
954 DMA_TO_DEVICE);
955 } else if (dma_unmap_len(tx_buffer, len)) {
956 dma_unmap_page(ring->dev,
957 dma_unmap_addr(tx_buffer, dma),
958 dma_unmap_len(tx_buffer, len),
959 DMA_TO_DEVICE);
960 }
961 tx_buffer->next_to_watch = NULL;
962 tx_buffer->skb = NULL;
963 dma_unmap_len_set(tx_buffer, len, 0);
964 /* tx_buffer must be completely set up in the transmit path */
965 }
966
967 static void ixgbe_update_xoff_rx_lfc(struct ixgbe_adapter *adapter)
968 {
969 struct ixgbe_hw *hw = &adapter->hw;
970 struct ixgbe_hw_stats *hwstats = &adapter->stats;
971 int i;
972 u32 data;
973
974 if ((hw->fc.current_mode != ixgbe_fc_full) &&
975 (hw->fc.current_mode != ixgbe_fc_rx_pause))
976 return;
977
978 switch (hw->mac.type) {
979 case ixgbe_mac_82598EB:
980 data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
981 break;
982 default:
983 data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT);
984 }
985 hwstats->lxoffrxc += data;
986
987 /* refill credits (no tx hang) if we received xoff */
988 if (!data)
989 return;
990
991 for (i = 0; i < adapter->num_tx_queues; i++)
992 clear_bit(__IXGBE_HANG_CHECK_ARMED,
993 &adapter->tx_ring[i]->state);
994 }
995
996 static void ixgbe_update_xoff_received(struct ixgbe_adapter *adapter)
997 {
998 struct ixgbe_hw *hw = &adapter->hw;
999 struct ixgbe_hw_stats *hwstats = &adapter->stats;
1000 u32 xoff[8] = {0};
1001 u8 tc;
1002 int i;
1003 bool pfc_en = adapter->dcb_cfg.pfc_mode_enable;
1004
1005 if (adapter->ixgbe_ieee_pfc)
1006 pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en);
1007
1008 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED) || !pfc_en) {
1009 ixgbe_update_xoff_rx_lfc(adapter);
1010 return;
1011 }
1012
1013 /* update stats for each tc, only valid with PFC enabled */
1014 for (i = 0; i < MAX_TX_PACKET_BUFFERS; i++) {
1015 u32 pxoffrxc;
1016
1017 switch (hw->mac.type) {
1018 case ixgbe_mac_82598EB:
1019 pxoffrxc = IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i));
1020 break;
1021 default:
1022 pxoffrxc = IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i));
1023 }
1024 hwstats->pxoffrxc[i] += pxoffrxc;
1025 /* Get the TC for given UP */
1026 tc = netdev_get_prio_tc_map(adapter->netdev, i);
1027 xoff[tc] += pxoffrxc;
1028 }
1029
1030 /* disarm tx queues that have received xoff frames */
1031 for (i = 0; i < adapter->num_tx_queues; i++) {
1032 struct ixgbe_ring *tx_ring = adapter->tx_ring[i];
1033
1034 tc = tx_ring->dcb_tc;
1035 if (xoff[tc])
1036 clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state);
1037 }
1038 }
1039
1040 static u64 ixgbe_get_tx_completed(struct ixgbe_ring *ring)
1041 {
1042 return ring->stats.packets;
1043 }
1044
1045 static u64 ixgbe_get_tx_pending(struct ixgbe_ring *ring)
1046 {
1047 struct ixgbe_adapter *adapter;
1048 struct ixgbe_hw *hw;
1049 u32 head, tail;
1050
1051 if (ring->l2_accel_priv)
1052 adapter = ring->l2_accel_priv->real_adapter;
1053 else
1054 adapter = netdev_priv(ring->netdev);
1055
1056 hw = &adapter->hw;
1057 head = IXGBE_READ_REG(hw, IXGBE_TDH(ring->reg_idx));
1058 tail = IXGBE_READ_REG(hw, IXGBE_TDT(ring->reg_idx));
1059
1060 if (head != tail)
1061 return (head < tail) ?
1062 tail - head : (tail + ring->count - head);
1063
1064 return 0;
1065 }
1066
1067 static inline bool ixgbe_check_tx_hang(struct ixgbe_ring *tx_ring)
1068 {
1069 u32 tx_done = ixgbe_get_tx_completed(tx_ring);
1070 u32 tx_done_old = tx_ring->tx_stats.tx_done_old;
1071 u32 tx_pending = ixgbe_get_tx_pending(tx_ring);
1072
1073 clear_check_for_tx_hang(tx_ring);
1074
1075 /*
1076 * Check for a hung queue, but be thorough. This verifies
1077 * that a transmit has been completed since the previous
1078 * check AND there is at least one packet pending. The
1079 * ARMED bit is set to indicate a potential hang. The
1080 * bit is cleared if a pause frame is received to remove
1081 * false hang detection due to PFC or 802.3x frames. By
1082 * requiring this to fail twice we avoid races with
1083 * pfc clearing the ARMED bit and conditions where we
1084 * run the check_tx_hang logic with a transmit completion
1085 * pending but without time to complete it yet.
1086 */
1087 if (tx_done_old == tx_done && tx_pending)
1088 /* make sure it is true for two checks in a row */
1089 return test_and_set_bit(__IXGBE_HANG_CHECK_ARMED,
1090 &tx_ring->state);
1091 /* update completed stats and continue */
1092 tx_ring->tx_stats.tx_done_old = tx_done;
1093 /* reset the countdown */
1094 clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state);
1095
1096 return false;
1097 }
1098
1099 /**
1100 * ixgbe_tx_timeout_reset - initiate reset due to Tx timeout
1101 * @adapter: driver private struct
1102 **/
1103 static void ixgbe_tx_timeout_reset(struct ixgbe_adapter *adapter)
1104 {
1105
1106 /* Do the reset outside of interrupt context */
1107 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
1108 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state);
1109 e_warn(drv, "initiating reset due to tx timeout\n");
1110 ixgbe_service_event_schedule(adapter);
1111 }
1112 }
1113
1114 /**
1115 * ixgbe_tx_maxrate - callback to set the maximum per-queue bitrate
1116 **/
1117 static int ixgbe_tx_maxrate(struct net_device *netdev,
1118 int queue_index, u32 maxrate)
1119 {
1120 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1121 struct ixgbe_hw *hw = &adapter->hw;
1122 u32 bcnrc_val = ixgbe_link_mbps(adapter);
1123
1124 if (!maxrate)
1125 return 0;
1126
1127 /* Calculate the rate factor values to set */
1128 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT;
1129 bcnrc_val /= maxrate;
1130
1131 /* clear everything but the rate factor */
1132 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK |
1133 IXGBE_RTTBCNRC_RF_DEC_MASK;
1134
1135 /* enable the rate scheduler */
1136 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA;
1137
1138 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, queue_index);
1139 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val);
1140
1141 return 0;
1142 }
1143
1144 /**
1145 * ixgbe_clean_tx_irq - Reclaim resources after transmit completes
1146 * @q_vector: structure containing interrupt and ring information
1147 * @tx_ring: tx ring to clean
1148 * @napi_budget: Used to determine if we are in netpoll
1149 **/
1150 static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector,
1151 struct ixgbe_ring *tx_ring, int napi_budget)
1152 {
1153 struct ixgbe_adapter *adapter = q_vector->adapter;
1154 struct ixgbe_tx_buffer *tx_buffer;
1155 union ixgbe_adv_tx_desc *tx_desc;
1156 unsigned int total_bytes = 0, total_packets = 0;
1157 unsigned int budget = q_vector->tx.work_limit;
1158 unsigned int i = tx_ring->next_to_clean;
1159
1160 if (test_bit(__IXGBE_DOWN, &adapter->state))
1161 return true;
1162
1163 tx_buffer = &tx_ring->tx_buffer_info[i];
1164 tx_desc = IXGBE_TX_DESC(tx_ring, i);
1165 i -= tx_ring->count;
1166
1167 do {
1168 union ixgbe_adv_tx_desc *eop_desc = tx_buffer->next_to_watch;
1169
1170 /* if next_to_watch is not set then there is no work pending */
1171 if (!eop_desc)
1172 break;
1173
1174 /* prevent any other reads prior to eop_desc */
1175 read_barrier_depends();
1176
1177 /* if DD is not set pending work has not been completed */
1178 if (!(eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD)))
1179 break;
1180
1181 /* clear next_to_watch to prevent false hangs */
1182 tx_buffer->next_to_watch = NULL;
1183
1184 /* update the statistics for this packet */
1185 total_bytes += tx_buffer->bytecount;
1186 total_packets += tx_buffer->gso_segs;
1187
1188 /* free the skb */
1189 napi_consume_skb(tx_buffer->skb, napi_budget);
1190
1191 /* unmap skb header data */
1192 dma_unmap_single(tx_ring->dev,
1193 dma_unmap_addr(tx_buffer, dma),
1194 dma_unmap_len(tx_buffer, len),
1195 DMA_TO_DEVICE);
1196
1197 /* clear tx_buffer data */
1198 tx_buffer->skb = NULL;
1199 dma_unmap_len_set(tx_buffer, len, 0);
1200
1201 /* unmap remaining buffers */
1202 while (tx_desc != eop_desc) {
1203 tx_buffer++;
1204 tx_desc++;
1205 i++;
1206 if (unlikely(!i)) {
1207 i -= tx_ring->count;
1208 tx_buffer = tx_ring->tx_buffer_info;
1209 tx_desc = IXGBE_TX_DESC(tx_ring, 0);
1210 }
1211
1212 /* unmap any remaining paged data */
1213 if (dma_unmap_len(tx_buffer, len)) {
1214 dma_unmap_page(tx_ring->dev,
1215 dma_unmap_addr(tx_buffer, dma),
1216 dma_unmap_len(tx_buffer, len),
1217 DMA_TO_DEVICE);
1218 dma_unmap_len_set(tx_buffer, len, 0);
1219 }
1220 }
1221
1222 /* move us one more past the eop_desc for start of next pkt */
1223 tx_buffer++;
1224 tx_desc++;
1225 i++;
1226 if (unlikely(!i)) {
1227 i -= tx_ring->count;
1228 tx_buffer = tx_ring->tx_buffer_info;
1229 tx_desc = IXGBE_TX_DESC(tx_ring, 0);
1230 }
1231
1232 /* issue prefetch for next Tx descriptor */
1233 prefetch(tx_desc);
1234
1235 /* update budget accounting */
1236 budget--;
1237 } while (likely(budget));
1238
1239 i += tx_ring->count;
1240 tx_ring->next_to_clean = i;
1241 u64_stats_update_begin(&tx_ring->syncp);
1242 tx_ring->stats.bytes += total_bytes;
1243 tx_ring->stats.packets += total_packets;
1244 u64_stats_update_end(&tx_ring->syncp);
1245 q_vector->tx.total_bytes += total_bytes;
1246 q_vector->tx.total_packets += total_packets;
1247
1248 if (check_for_tx_hang(tx_ring) && ixgbe_check_tx_hang(tx_ring)) {
1249 /* schedule immediate reset if we believe we hung */
1250 struct ixgbe_hw *hw = &adapter->hw;
1251 e_err(drv, "Detected Tx Unit Hang\n"
1252 " Tx Queue <%d>\n"
1253 " TDH, TDT <%x>, <%x>\n"
1254 " next_to_use <%x>\n"
1255 " next_to_clean <%x>\n"
1256 "tx_buffer_info[next_to_clean]\n"
1257 " time_stamp <%lx>\n"
1258 " jiffies <%lx>\n",
1259 tx_ring->queue_index,
1260 IXGBE_READ_REG(hw, IXGBE_TDH(tx_ring->reg_idx)),
1261 IXGBE_READ_REG(hw, IXGBE_TDT(tx_ring->reg_idx)),
1262 tx_ring->next_to_use, i,
1263 tx_ring->tx_buffer_info[i].time_stamp, jiffies);
1264
1265 netif_stop_subqueue(tx_ring->netdev, tx_ring->queue_index);
1266
1267 e_info(probe,
1268 "tx hang %d detected on queue %d, resetting adapter\n",
1269 adapter->tx_timeout_count + 1, tx_ring->queue_index);
1270
1271 /* schedule immediate reset if we believe we hung */
1272 ixgbe_tx_timeout_reset(adapter);
1273
1274 /* the adapter is about to reset, no point in enabling stuff */
1275 return true;
1276 }
1277
1278 netdev_tx_completed_queue(txring_txq(tx_ring),
1279 total_packets, total_bytes);
1280
1281 #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
1282 if (unlikely(total_packets && netif_carrier_ok(tx_ring->netdev) &&
1283 (ixgbe_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD))) {
1284 /* Make sure that anybody stopping the queue after this
1285 * sees the new next_to_clean.
1286 */
1287 smp_mb();
1288 if (__netif_subqueue_stopped(tx_ring->netdev,
1289 tx_ring->queue_index)
1290 && !test_bit(__IXGBE_DOWN, &adapter->state)) {
1291 netif_wake_subqueue(tx_ring->netdev,
1292 tx_ring->queue_index);
1293 ++tx_ring->tx_stats.restart_queue;
1294 }
1295 }
1296
1297 return !!budget;
1298 }
1299
1300 #ifdef CONFIG_IXGBE_DCA
1301 static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter,
1302 struct ixgbe_ring *tx_ring,
1303 int cpu)
1304 {
1305 struct ixgbe_hw *hw = &adapter->hw;
1306 u32 txctrl = 0;
1307 u16 reg_offset;
1308
1309 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
1310 txctrl = dca3_get_tag(tx_ring->dev, cpu);
1311
1312 switch (hw->mac.type) {
1313 case ixgbe_mac_82598EB:
1314 reg_offset = IXGBE_DCA_TXCTRL(tx_ring->reg_idx);
1315 break;
1316 case ixgbe_mac_82599EB:
1317 case ixgbe_mac_X540:
1318 reg_offset = IXGBE_DCA_TXCTRL_82599(tx_ring->reg_idx);
1319 txctrl <<= IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599;
1320 break;
1321 default:
1322 /* for unknown hardware do not write register */
1323 return;
1324 }
1325
1326 /*
1327 * We can enable relaxed ordering for reads, but not writes when
1328 * DCA is enabled. This is due to a known issue in some chipsets
1329 * which will cause the DCA tag to be cleared.
1330 */
1331 txctrl |= IXGBE_DCA_TXCTRL_DESC_RRO_EN |
1332 IXGBE_DCA_TXCTRL_DATA_RRO_EN |
1333 IXGBE_DCA_TXCTRL_DESC_DCA_EN;
1334
1335 IXGBE_WRITE_REG(hw, reg_offset, txctrl);
1336 }
1337
1338 static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter,
1339 struct ixgbe_ring *rx_ring,
1340 int cpu)
1341 {
1342 struct ixgbe_hw *hw = &adapter->hw;
1343 u32 rxctrl = 0;
1344 u8 reg_idx = rx_ring->reg_idx;
1345
1346 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
1347 rxctrl = dca3_get_tag(rx_ring->dev, cpu);
1348
1349 switch (hw->mac.type) {
1350 case ixgbe_mac_82599EB:
1351 case ixgbe_mac_X540:
1352 rxctrl <<= IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599;
1353 break;
1354 default:
1355 break;
1356 }
1357
1358 /*
1359 * We can enable relaxed ordering for reads, but not writes when
1360 * DCA is enabled. This is due to a known issue in some chipsets
1361 * which will cause the DCA tag to be cleared.
1362 */
1363 rxctrl |= IXGBE_DCA_RXCTRL_DESC_RRO_EN |
1364 IXGBE_DCA_RXCTRL_DATA_DCA_EN |
1365 IXGBE_DCA_RXCTRL_DESC_DCA_EN;
1366
1367 IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(reg_idx), rxctrl);
1368 }
1369
1370 static void ixgbe_update_dca(struct ixgbe_q_vector *q_vector)
1371 {
1372 struct ixgbe_adapter *adapter = q_vector->adapter;
1373 struct ixgbe_ring *ring;
1374 int cpu = get_cpu();
1375
1376 if (q_vector->cpu == cpu)
1377 goto out_no_update;
1378
1379 ixgbe_for_each_ring(ring, q_vector->tx)
1380 ixgbe_update_tx_dca(adapter, ring, cpu);
1381
1382 ixgbe_for_each_ring(ring, q_vector->rx)
1383 ixgbe_update_rx_dca(adapter, ring, cpu);
1384
1385 q_vector->cpu = cpu;
1386 out_no_update:
1387 put_cpu();
1388 }
1389
1390 static void ixgbe_setup_dca(struct ixgbe_adapter *adapter)
1391 {
1392 int i;
1393
1394 /* always use CB2 mode, difference is masked in the CB driver */
1395 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
1396 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL,
1397 IXGBE_DCA_CTRL_DCA_MODE_CB2);
1398 else
1399 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL,
1400 IXGBE_DCA_CTRL_DCA_DISABLE);
1401
1402 for (i = 0; i < adapter->num_q_vectors; i++) {
1403 adapter->q_vector[i]->cpu = -1;
1404 ixgbe_update_dca(adapter->q_vector[i]);
1405 }
1406 }
1407
1408 static int __ixgbe_notify_dca(struct device *dev, void *data)
1409 {
1410 struct ixgbe_adapter *adapter = dev_get_drvdata(dev);
1411 unsigned long event = *(unsigned long *)data;
1412
1413 if (!(adapter->flags & IXGBE_FLAG_DCA_CAPABLE))
1414 return 0;
1415
1416 switch (event) {
1417 case DCA_PROVIDER_ADD:
1418 /* if we're already enabled, don't do it again */
1419 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
1420 break;
1421 if (dca_add_requester(dev) == 0) {
1422 adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
1423 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL,
1424 IXGBE_DCA_CTRL_DCA_MODE_CB2);
1425 break;
1426 }
1427 /* Fall Through since DCA is disabled. */
1428 case DCA_PROVIDER_REMOVE:
1429 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
1430 dca_remove_requester(dev);
1431 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
1432 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL,
1433 IXGBE_DCA_CTRL_DCA_DISABLE);
1434 }
1435 break;
1436 }
1437
1438 return 0;
1439 }
1440
1441 #endif /* CONFIG_IXGBE_DCA */
1442
1443 #define IXGBE_RSS_L4_TYPES_MASK \
1444 ((1ul << IXGBE_RXDADV_RSSTYPE_IPV4_TCP) | \
1445 (1ul << IXGBE_RXDADV_RSSTYPE_IPV4_UDP) | \
1446 (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_TCP) | \
1447 (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_UDP))
1448
1449 static inline void ixgbe_rx_hash(struct ixgbe_ring *ring,
1450 union ixgbe_adv_rx_desc *rx_desc,
1451 struct sk_buff *skb)
1452 {
1453 u16 rss_type;
1454
1455 if (!(ring->netdev->features & NETIF_F_RXHASH))
1456 return;
1457
1458 rss_type = le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.pkt_info) &
1459 IXGBE_RXDADV_RSSTYPE_MASK;
1460
1461 if (!rss_type)
1462 return;
1463
1464 skb_set_hash(skb, le32_to_cpu(rx_desc->wb.lower.hi_dword.rss),
1465 (IXGBE_RSS_L4_TYPES_MASK & (1ul << rss_type)) ?
1466 PKT_HASH_TYPE_L4 : PKT_HASH_TYPE_L3);
1467 }
1468
1469 #ifdef IXGBE_FCOE
1470 /**
1471 * ixgbe_rx_is_fcoe - check the rx desc for incoming pkt type
1472 * @ring: structure containing ring specific data
1473 * @rx_desc: advanced rx descriptor
1474 *
1475 * Returns : true if it is FCoE pkt
1476 */
1477 static inline bool ixgbe_rx_is_fcoe(struct ixgbe_ring *ring,
1478 union ixgbe_adv_rx_desc *rx_desc)
1479 {
1480 __le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
1481
1482 return test_bit(__IXGBE_RX_FCOE, &ring->state) &&
1483 ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_ETQF_MASK)) ==
1484 (cpu_to_le16(IXGBE_ETQF_FILTER_FCOE <<
1485 IXGBE_RXDADV_PKTTYPE_ETQF_SHIFT)));
1486 }
1487
1488 #endif /* IXGBE_FCOE */
1489 /**
1490 * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum
1491 * @ring: structure containing ring specific data
1492 * @rx_desc: current Rx descriptor being processed
1493 * @skb: skb currently being received and modified
1494 **/
1495 static inline void ixgbe_rx_checksum(struct ixgbe_ring *ring,
1496 union ixgbe_adv_rx_desc *rx_desc,
1497 struct sk_buff *skb)
1498 {
1499 __le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info;
1500 bool encap_pkt = false;
1501
1502 skb_checksum_none_assert(skb);
1503
1504 /* Rx csum disabled */
1505 if (!(ring->netdev->features & NETIF_F_RXCSUM))
1506 return;
1507
1508 /* check for VXLAN and Geneve packets */
1509 if (pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_VXLAN)) {
1510 encap_pkt = true;
1511 skb->encapsulation = 1;
1512 }
1513
1514 /* if IP and error */
1515 if (ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_IPCS) &&
1516 ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_IPE)) {
1517 ring->rx_stats.csum_err++;
1518 return;
1519 }
1520
1521 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_L4CS))
1522 return;
1523
1524 if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_TCPE)) {
1525 /*
1526 * 82599 errata, UDP frames with a 0 checksum can be marked as
1527 * checksum errors.
1528 */
1529 if ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_UDP)) &&
1530 test_bit(__IXGBE_RX_CSUM_UDP_ZERO_ERR, &ring->state))
1531 return;
1532
1533 ring->rx_stats.csum_err++;
1534 return;
1535 }
1536
1537 /* It must be a TCP or UDP packet with a valid checksum */
1538 skb->ip_summed = CHECKSUM_UNNECESSARY;
1539 if (encap_pkt) {
1540 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_OUTERIPCS))
1541 return;
1542
1543 if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_OUTERIPER)) {
1544 skb->ip_summed = CHECKSUM_NONE;
1545 return;
1546 }
1547 /* If we checked the outer header let the stack know */
1548 skb->csum_level = 1;
1549 }
1550 }
1551
1552 static bool ixgbe_alloc_mapped_page(struct ixgbe_ring *rx_ring,
1553 struct ixgbe_rx_buffer *bi)
1554 {
1555 struct page *page = bi->page;
1556 dma_addr_t dma;
1557
1558 /* since we are recycling buffers we should seldom need to alloc */
1559 if (likely(page))
1560 return true;
1561
1562 /* alloc new page for storage */
1563 page = dev_alloc_pages(ixgbe_rx_pg_order(rx_ring));
1564 if (unlikely(!page)) {
1565 rx_ring->rx_stats.alloc_rx_page_failed++;
1566 return false;
1567 }
1568
1569 /* map page for use */
1570 dma = dma_map_page(rx_ring->dev, page, 0,
1571 ixgbe_rx_pg_size(rx_ring), DMA_FROM_DEVICE);
1572
1573 /*
1574 * if mapping failed free memory back to system since
1575 * there isn't much point in holding memory we can't use
1576 */
1577 if (dma_mapping_error(rx_ring->dev, dma)) {
1578 __free_pages(page, ixgbe_rx_pg_order(rx_ring));
1579
1580 rx_ring->rx_stats.alloc_rx_page_failed++;
1581 return false;
1582 }
1583
1584 bi->dma = dma;
1585 bi->page = page;
1586 bi->page_offset = 0;
1587
1588 return true;
1589 }
1590
1591 /**
1592 * ixgbe_alloc_rx_buffers - Replace used receive buffers
1593 * @rx_ring: ring to place buffers on
1594 * @cleaned_count: number of buffers to replace
1595 **/
1596 void ixgbe_alloc_rx_buffers(struct ixgbe_ring *rx_ring, u16 cleaned_count)
1597 {
1598 union ixgbe_adv_rx_desc *rx_desc;
1599 struct ixgbe_rx_buffer *bi;
1600 u16 i = rx_ring->next_to_use;
1601
1602 /* nothing to do */
1603 if (!cleaned_count)
1604 return;
1605
1606 rx_desc = IXGBE_RX_DESC(rx_ring, i);
1607 bi = &rx_ring->rx_buffer_info[i];
1608 i -= rx_ring->count;
1609
1610 do {
1611 if (!ixgbe_alloc_mapped_page(rx_ring, bi))
1612 break;
1613
1614 /*
1615 * Refresh the desc even if buffer_addrs didn't change
1616 * because each write-back erases this info.
1617 */
1618 rx_desc->read.pkt_addr = cpu_to_le64(bi->dma + bi->page_offset);
1619
1620 rx_desc++;
1621 bi++;
1622 i++;
1623 if (unlikely(!i)) {
1624 rx_desc = IXGBE_RX_DESC(rx_ring, 0);
1625 bi = rx_ring->rx_buffer_info;
1626 i -= rx_ring->count;
1627 }
1628
1629 /* clear the status bits for the next_to_use descriptor */
1630 rx_desc->wb.upper.status_error = 0;
1631
1632 cleaned_count--;
1633 } while (cleaned_count);
1634
1635 i += rx_ring->count;
1636
1637 if (rx_ring->next_to_use != i) {
1638 rx_ring->next_to_use = i;
1639
1640 /* update next to alloc since we have filled the ring */
1641 rx_ring->next_to_alloc = i;
1642
1643 /* Force memory writes to complete before letting h/w
1644 * know there are new descriptors to fetch. (Only
1645 * applicable for weak-ordered memory model archs,
1646 * such as IA-64).
1647 */
1648 wmb();
1649 writel(i, rx_ring->tail);
1650 }
1651 }
1652
1653 static void ixgbe_set_rsc_gso_size(struct ixgbe_ring *ring,
1654 struct sk_buff *skb)
1655 {
1656 u16 hdr_len = skb_headlen(skb);
1657
1658 /* set gso_size to avoid messing up TCP MSS */
1659 skb_shinfo(skb)->gso_size = DIV_ROUND_UP((skb->len - hdr_len),
1660 IXGBE_CB(skb)->append_cnt);
1661 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4;
1662 }
1663
1664 static void ixgbe_update_rsc_stats(struct ixgbe_ring *rx_ring,
1665 struct sk_buff *skb)
1666 {
1667 /* if append_cnt is 0 then frame is not RSC */
1668 if (!IXGBE_CB(skb)->append_cnt)
1669 return;
1670
1671 rx_ring->rx_stats.rsc_count += IXGBE_CB(skb)->append_cnt;
1672 rx_ring->rx_stats.rsc_flush++;
1673
1674 ixgbe_set_rsc_gso_size(rx_ring, skb);
1675
1676 /* gso_size is computed using append_cnt so always clear it last */
1677 IXGBE_CB(skb)->append_cnt = 0;
1678 }
1679
1680 /**
1681 * ixgbe_process_skb_fields - Populate skb header fields from Rx descriptor
1682 * @rx_ring: rx descriptor ring packet is being transacted on
1683 * @rx_desc: pointer to the EOP Rx descriptor
1684 * @skb: pointer to current skb being populated
1685 *
1686 * This function checks the ring, descriptor, and packet information in
1687 * order to populate the hash, checksum, VLAN, timestamp, protocol, and
1688 * other fields within the skb.
1689 **/
1690 static void ixgbe_process_skb_fields(struct ixgbe_ring *rx_ring,
1691 union ixgbe_adv_rx_desc *rx_desc,
1692 struct sk_buff *skb)
1693 {
1694 struct net_device *dev = rx_ring->netdev;
1695 u32 flags = rx_ring->q_vector->adapter->flags;
1696
1697 ixgbe_update_rsc_stats(rx_ring, skb);
1698
1699 ixgbe_rx_hash(rx_ring, rx_desc, skb);
1700
1701 ixgbe_rx_checksum(rx_ring, rx_desc, skb);
1702
1703 if (unlikely(flags & IXGBE_FLAG_RX_HWTSTAMP_ENABLED))
1704 ixgbe_ptp_rx_hwtstamp(rx_ring, rx_desc, skb);
1705
1706 if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) &&
1707 ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_VP)) {
1708 u16 vid = le16_to_cpu(rx_desc->wb.upper.vlan);
1709 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
1710 }
1711
1712 skb_record_rx_queue(skb, rx_ring->queue_index);
1713
1714 skb->protocol = eth_type_trans(skb, dev);
1715 }
1716
1717 static void ixgbe_rx_skb(struct ixgbe_q_vector *q_vector,
1718 struct sk_buff *skb)
1719 {
1720 skb_mark_napi_id(skb, &q_vector->napi);
1721 if (ixgbe_qv_busy_polling(q_vector))
1722 netif_receive_skb(skb);
1723 else
1724 napi_gro_receive(&q_vector->napi, skb);
1725 }
1726
1727 /**
1728 * ixgbe_is_non_eop - process handling of non-EOP buffers
1729 * @rx_ring: Rx ring being processed
1730 * @rx_desc: Rx descriptor for current buffer
1731 * @skb: Current socket buffer containing buffer in progress
1732 *
1733 * This function updates next to clean. If the buffer is an EOP buffer
1734 * this function exits returning false, otherwise it will place the
1735 * sk_buff in the next buffer to be chained and return true indicating
1736 * that this is in fact a non-EOP buffer.
1737 **/
1738 static bool ixgbe_is_non_eop(struct ixgbe_ring *rx_ring,
1739 union ixgbe_adv_rx_desc *rx_desc,
1740 struct sk_buff *skb)
1741 {
1742 u32 ntc = rx_ring->next_to_clean + 1;
1743
1744 /* fetch, update, and store next to clean */
1745 ntc = (ntc < rx_ring->count) ? ntc : 0;
1746 rx_ring->next_to_clean = ntc;
1747
1748 prefetch(IXGBE_RX_DESC(rx_ring, ntc));
1749
1750 /* update RSC append count if present */
1751 if (ring_is_rsc_enabled(rx_ring)) {
1752 __le32 rsc_enabled = rx_desc->wb.lower.lo_dword.data &
1753 cpu_to_le32(IXGBE_RXDADV_RSCCNT_MASK);
1754
1755 if (unlikely(rsc_enabled)) {
1756 u32 rsc_cnt = le32_to_cpu(rsc_enabled);
1757
1758 rsc_cnt >>= IXGBE_RXDADV_RSCCNT_SHIFT;
1759 IXGBE_CB(skb)->append_cnt += rsc_cnt - 1;
1760
1761 /* update ntc based on RSC value */
1762 ntc = le32_to_cpu(rx_desc->wb.upper.status_error);
1763 ntc &= IXGBE_RXDADV_NEXTP_MASK;
1764 ntc >>= IXGBE_RXDADV_NEXTP_SHIFT;
1765 }
1766 }
1767
1768 /* if we are the last buffer then there is nothing else to do */
1769 if (likely(ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)))
1770 return false;
1771
1772 /* place skb in next buffer to be received */
1773 rx_ring->rx_buffer_info[ntc].skb = skb;
1774 rx_ring->rx_stats.non_eop_descs++;
1775
1776 return true;
1777 }
1778
1779 /**
1780 * ixgbe_pull_tail - ixgbe specific version of skb_pull_tail
1781 * @rx_ring: rx descriptor ring packet is being transacted on
1782 * @skb: pointer to current skb being adjusted
1783 *
1784 * This function is an ixgbe specific version of __pskb_pull_tail. The
1785 * main difference between this version and the original function is that
1786 * this function can make several assumptions about the state of things
1787 * that allow for significant optimizations versus the standard function.
1788 * As a result we can do things like drop a frag and maintain an accurate
1789 * truesize for the skb.
1790 */
1791 static void ixgbe_pull_tail(struct ixgbe_ring *rx_ring,
1792 struct sk_buff *skb)
1793 {
1794 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[0];
1795 unsigned char *va;
1796 unsigned int pull_len;
1797
1798 /*
1799 * it is valid to use page_address instead of kmap since we are
1800 * working with pages allocated out of the lomem pool per
1801 * alloc_page(GFP_ATOMIC)
1802 */
1803 va = skb_frag_address(frag);
1804
1805 /*
1806 * we need the header to contain the greater of either ETH_HLEN or
1807 * 60 bytes if the skb->len is less than 60 for skb_pad.
1808 */
1809 pull_len = eth_get_headlen(va, IXGBE_RX_HDR_SIZE);
1810
1811 /* align pull length to size of long to optimize memcpy performance */
1812 skb_copy_to_linear_data(skb, va, ALIGN(pull_len, sizeof(long)));
1813
1814 /* update all of the pointers */
1815 skb_frag_size_sub(frag, pull_len);
1816 frag->page_offset += pull_len;
1817 skb->data_len -= pull_len;
1818 skb->tail += pull_len;
1819 }
1820
1821 /**
1822 * ixgbe_dma_sync_frag - perform DMA sync for first frag of SKB
1823 * @rx_ring: rx descriptor ring packet is being transacted on
1824 * @skb: pointer to current skb being updated
1825 *
1826 * This function provides a basic DMA sync up for the first fragment of an
1827 * skb. The reason for doing this is that the first fragment cannot be
1828 * unmapped until we have reached the end of packet descriptor for a buffer
1829 * chain.
1830 */
1831 static void ixgbe_dma_sync_frag(struct ixgbe_ring *rx_ring,
1832 struct sk_buff *skb)
1833 {
1834 /* if the page was released unmap it, else just sync our portion */
1835 if (unlikely(IXGBE_CB(skb)->page_released)) {
1836 dma_unmap_page(rx_ring->dev, IXGBE_CB(skb)->dma,
1837 ixgbe_rx_pg_size(rx_ring), DMA_FROM_DEVICE);
1838 IXGBE_CB(skb)->page_released = false;
1839 } else {
1840 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[0];
1841
1842 dma_sync_single_range_for_cpu(rx_ring->dev,
1843 IXGBE_CB(skb)->dma,
1844 frag->page_offset,
1845 ixgbe_rx_bufsz(rx_ring),
1846 DMA_FROM_DEVICE);
1847 }
1848 IXGBE_CB(skb)->dma = 0;
1849 }
1850
1851 /**
1852 * ixgbe_cleanup_headers - Correct corrupted or empty headers
1853 * @rx_ring: rx descriptor ring packet is being transacted on
1854 * @rx_desc: pointer to the EOP Rx descriptor
1855 * @skb: pointer to current skb being fixed
1856 *
1857 * Check for corrupted packet headers caused by senders on the local L2
1858 * embedded NIC switch not setting up their Tx Descriptors right. These
1859 * should be very rare.
1860 *
1861 * Also address the case where we are pulling data in on pages only
1862 * and as such no data is present in the skb header.
1863 *
1864 * In addition if skb is not at least 60 bytes we need to pad it so that
1865 * it is large enough to qualify as a valid Ethernet frame.
1866 *
1867 * Returns true if an error was encountered and skb was freed.
1868 **/
1869 static bool ixgbe_cleanup_headers(struct ixgbe_ring *rx_ring,
1870 union ixgbe_adv_rx_desc *rx_desc,
1871 struct sk_buff *skb)
1872 {
1873 struct net_device *netdev = rx_ring->netdev;
1874
1875 /* verify that the packet does not have any known errors */
1876 if (unlikely(ixgbe_test_staterr(rx_desc,
1877 IXGBE_RXDADV_ERR_FRAME_ERR_MASK) &&
1878 !(netdev->features & NETIF_F_RXALL))) {
1879 dev_kfree_skb_any(skb);
1880 return true;
1881 }
1882
1883 /* place header in linear portion of buffer */
1884 if (skb_is_nonlinear(skb))
1885 ixgbe_pull_tail(rx_ring, skb);
1886
1887 #ifdef IXGBE_FCOE
1888 /* do not attempt to pad FCoE Frames as this will disrupt DDP */
1889 if (ixgbe_rx_is_fcoe(rx_ring, rx_desc))
1890 return false;
1891
1892 #endif
1893 /* if eth_skb_pad returns an error the skb was freed */
1894 if (eth_skb_pad(skb))
1895 return true;
1896
1897 return false;
1898 }
1899
1900 /**
1901 * ixgbe_reuse_rx_page - page flip buffer and store it back on the ring
1902 * @rx_ring: rx descriptor ring to store buffers on
1903 * @old_buff: donor buffer to have page reused
1904 *
1905 * Synchronizes page for reuse by the adapter
1906 **/
1907 static void ixgbe_reuse_rx_page(struct ixgbe_ring *rx_ring,
1908 struct ixgbe_rx_buffer *old_buff)
1909 {
1910 struct ixgbe_rx_buffer *new_buff;
1911 u16 nta = rx_ring->next_to_alloc;
1912
1913 new_buff = &rx_ring->rx_buffer_info[nta];
1914
1915 /* update, and store next to alloc */
1916 nta++;
1917 rx_ring->next_to_alloc = (nta < rx_ring->count) ? nta : 0;
1918
1919 /* transfer page from old buffer to new buffer */
1920 *new_buff = *old_buff;
1921
1922 /* sync the buffer for use by the device */
1923 dma_sync_single_range_for_device(rx_ring->dev, new_buff->dma,
1924 new_buff->page_offset,
1925 ixgbe_rx_bufsz(rx_ring),
1926 DMA_FROM_DEVICE);
1927 }
1928
1929 static inline bool ixgbe_page_is_reserved(struct page *page)
1930 {
1931 return (page_to_nid(page) != numa_mem_id()) || page_is_pfmemalloc(page);
1932 }
1933
1934 /**
1935 * ixgbe_add_rx_frag - Add contents of Rx buffer to sk_buff
1936 * @rx_ring: rx descriptor ring to transact packets on
1937 * @rx_buffer: buffer containing page to add
1938 * @rx_desc: descriptor containing length of buffer written by hardware
1939 * @skb: sk_buff to place the data into
1940 *
1941 * This function will add the data contained in rx_buffer->page to the skb.
1942 * This is done either through a direct copy if the data in the buffer is
1943 * less than the skb header size, otherwise it will just attach the page as
1944 * a frag to the skb.
1945 *
1946 * The function will then update the page offset if necessary and return
1947 * true if the buffer can be reused by the adapter.
1948 **/
1949 static bool ixgbe_add_rx_frag(struct ixgbe_ring *rx_ring,
1950 struct ixgbe_rx_buffer *rx_buffer,
1951 union ixgbe_adv_rx_desc *rx_desc,
1952 struct sk_buff *skb)
1953 {
1954 struct page *page = rx_buffer->page;
1955 unsigned int size = le16_to_cpu(rx_desc->wb.upper.length);
1956 #if (PAGE_SIZE < 8192)
1957 unsigned int truesize = ixgbe_rx_bufsz(rx_ring);
1958 #else
1959 unsigned int truesize = ALIGN(size, L1_CACHE_BYTES);
1960 unsigned int last_offset = ixgbe_rx_pg_size(rx_ring) -
1961 ixgbe_rx_bufsz(rx_ring);
1962 #endif
1963
1964 if ((size <= IXGBE_RX_HDR_SIZE) && !skb_is_nonlinear(skb)) {
1965 unsigned char *va = page_address(page) + rx_buffer->page_offset;
1966
1967 memcpy(__skb_put(skb, size), va, ALIGN(size, sizeof(long)));
1968
1969 /* page is not reserved, we can reuse buffer as-is */
1970 if (likely(!ixgbe_page_is_reserved(page)))
1971 return true;
1972
1973 /* this page cannot be reused so discard it */
1974 __free_pages(page, ixgbe_rx_pg_order(rx_ring));
1975 return false;
1976 }
1977
1978 skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, page,
1979 rx_buffer->page_offset, size, truesize);
1980
1981 /* avoid re-using remote pages */
1982 if (unlikely(ixgbe_page_is_reserved(page)))
1983 return false;
1984
1985 #if (PAGE_SIZE < 8192)
1986 /* if we are only owner of page we can reuse it */
1987 if (unlikely(page_count(page) != 1))
1988 return false;
1989
1990 /* flip page offset to other buffer */
1991 rx_buffer->page_offset ^= truesize;
1992 #else
1993 /* move offset up to the next cache line */
1994 rx_buffer->page_offset += truesize;
1995
1996 if (rx_buffer->page_offset > last_offset)
1997 return false;
1998 #endif
1999
2000 /* Even if we own the page, we are not allowed to use atomic_set()
2001 * This would break get_page_unless_zero() users.
2002 */
2003 page_ref_inc(page);
2004
2005 return true;
2006 }
2007
2008 static struct sk_buff *ixgbe_fetch_rx_buffer(struct ixgbe_ring *rx_ring,
2009 union ixgbe_adv_rx_desc *rx_desc)
2010 {
2011 struct ixgbe_rx_buffer *rx_buffer;
2012 struct sk_buff *skb;
2013 struct page *page;
2014
2015 rx_buffer = &rx_ring->rx_buffer_info[rx_ring->next_to_clean];
2016 page = rx_buffer->page;
2017 prefetchw(page);
2018
2019 skb = rx_buffer->skb;
2020
2021 if (likely(!skb)) {
2022 void *page_addr = page_address(page) +
2023 rx_buffer->page_offset;
2024
2025 /* prefetch first cache line of first page */
2026 prefetch(page_addr);
2027 #if L1_CACHE_BYTES < 128
2028 prefetch(page_addr + L1_CACHE_BYTES);
2029 #endif
2030
2031 /* allocate a skb to store the frags */
2032 skb = napi_alloc_skb(&rx_ring->q_vector->napi,
2033 IXGBE_RX_HDR_SIZE);
2034 if (unlikely(!skb)) {
2035 rx_ring->rx_stats.alloc_rx_buff_failed++;
2036 return NULL;
2037 }
2038
2039 /*
2040 * we will be copying header into skb->data in
2041 * pskb_may_pull so it is in our interest to prefetch
2042 * it now to avoid a possible cache miss
2043 */
2044 prefetchw(skb->data);
2045
2046 /*
2047 * Delay unmapping of the first packet. It carries the
2048 * header information, HW may still access the header
2049 * after the writeback. Only unmap it when EOP is
2050 * reached
2051 */
2052 if (likely(ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)))
2053 goto dma_sync;
2054
2055 IXGBE_CB(skb)->dma = rx_buffer->dma;
2056 } else {
2057 if (ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP))
2058 ixgbe_dma_sync_frag(rx_ring, skb);
2059
2060 dma_sync:
2061 /* we are reusing so sync this buffer for CPU use */
2062 dma_sync_single_range_for_cpu(rx_ring->dev,
2063 rx_buffer->dma,
2064 rx_buffer->page_offset,
2065 ixgbe_rx_bufsz(rx_ring),
2066 DMA_FROM_DEVICE);
2067
2068 rx_buffer->skb = NULL;
2069 }
2070
2071 /* pull page into skb */
2072 if (ixgbe_add_rx_frag(rx_ring, rx_buffer, rx_desc, skb)) {
2073 /* hand second half of page back to the ring */
2074 ixgbe_reuse_rx_page(rx_ring, rx_buffer);
2075 } else if (IXGBE_CB(skb)->dma == rx_buffer->dma) {
2076 /* the page has been released from the ring */
2077 IXGBE_CB(skb)->page_released = true;
2078 } else {
2079 /* we are not reusing the buffer so unmap it */
2080 dma_unmap_page(rx_ring->dev, rx_buffer->dma,
2081 ixgbe_rx_pg_size(rx_ring),
2082 DMA_FROM_DEVICE);
2083 }
2084
2085 /* clear contents of buffer_info */
2086 rx_buffer->page = NULL;
2087
2088 return skb;
2089 }
2090
2091 /**
2092 * ixgbe_clean_rx_irq - Clean completed descriptors from Rx ring - bounce buf
2093 * @q_vector: structure containing interrupt and ring information
2094 * @rx_ring: rx descriptor ring to transact packets on
2095 * @budget: Total limit on number of packets to process
2096 *
2097 * This function provides a "bounce buffer" approach to Rx interrupt
2098 * processing. The advantage to this is that on systems that have
2099 * expensive overhead for IOMMU access this provides a means of avoiding
2100 * it by maintaining the mapping of the page to the syste.
2101 *
2102 * Returns amount of work completed
2103 **/
2104 static int ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
2105 struct ixgbe_ring *rx_ring,
2106 const int budget)
2107 {
2108 unsigned int total_rx_bytes = 0, total_rx_packets = 0;
2109 #ifdef IXGBE_FCOE
2110 struct ixgbe_adapter *adapter = q_vector->adapter;
2111 int ddp_bytes;
2112 unsigned int mss = 0;
2113 #endif /* IXGBE_FCOE */
2114 u16 cleaned_count = ixgbe_desc_unused(rx_ring);
2115
2116 while (likely(total_rx_packets < budget)) {
2117 union ixgbe_adv_rx_desc *rx_desc;
2118 struct sk_buff *skb;
2119
2120 /* return some buffers to hardware, one at a time is too slow */
2121 if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) {
2122 ixgbe_alloc_rx_buffers(rx_ring, cleaned_count);
2123 cleaned_count = 0;
2124 }
2125
2126 rx_desc = IXGBE_RX_DESC(rx_ring, rx_ring->next_to_clean);
2127
2128 if (!rx_desc->wb.upper.status_error)
2129 break;
2130
2131 /* This memory barrier is needed to keep us from reading
2132 * any other fields out of the rx_desc until we know the
2133 * descriptor has been written back
2134 */
2135 dma_rmb();
2136
2137 /* retrieve a buffer from the ring */
2138 skb = ixgbe_fetch_rx_buffer(rx_ring, rx_desc);
2139
2140 /* exit if we failed to retrieve a buffer */
2141 if (!skb)
2142 break;
2143
2144 cleaned_count++;
2145
2146 /* place incomplete frames back on ring for completion */
2147 if (ixgbe_is_non_eop(rx_ring, rx_desc, skb))
2148 continue;
2149
2150 /* verify the packet layout is correct */
2151 if (ixgbe_cleanup_headers(rx_ring, rx_desc, skb))
2152 continue;
2153
2154 /* probably a little skewed due to removing CRC */
2155 total_rx_bytes += skb->len;
2156
2157 /* populate checksum, timestamp, VLAN, and protocol */
2158 ixgbe_process_skb_fields(rx_ring, rx_desc, skb);
2159
2160 #ifdef IXGBE_FCOE
2161 /* if ddp, not passing to ULD unless for FCP_RSP or error */
2162 if (ixgbe_rx_is_fcoe(rx_ring, rx_desc)) {
2163 ddp_bytes = ixgbe_fcoe_ddp(adapter, rx_desc, skb);
2164 /* include DDPed FCoE data */
2165 if (ddp_bytes > 0) {
2166 if (!mss) {
2167 mss = rx_ring->netdev->mtu -
2168 sizeof(struct fcoe_hdr) -
2169 sizeof(struct fc_frame_header) -
2170 sizeof(struct fcoe_crc_eof);
2171 if (mss > 512)
2172 mss &= ~511;
2173 }
2174 total_rx_bytes += ddp_bytes;
2175 total_rx_packets += DIV_ROUND_UP(ddp_bytes,
2176 mss);
2177 }
2178 if (!ddp_bytes) {
2179 dev_kfree_skb_any(skb);
2180 continue;
2181 }
2182 }
2183
2184 #endif /* IXGBE_FCOE */
2185 ixgbe_rx_skb(q_vector, skb);
2186
2187 /* update budget accounting */
2188 total_rx_packets++;
2189 }
2190
2191 u64_stats_update_begin(&rx_ring->syncp);
2192 rx_ring->stats.packets += total_rx_packets;
2193 rx_ring->stats.bytes += total_rx_bytes;
2194 u64_stats_update_end(&rx_ring->syncp);
2195 q_vector->rx.total_packets += total_rx_packets;
2196 q_vector->rx.total_bytes += total_rx_bytes;
2197
2198 return total_rx_packets;
2199 }
2200
2201 #ifdef CONFIG_NET_RX_BUSY_POLL
2202 /* must be called with local_bh_disable()d */
2203 static int ixgbe_low_latency_recv(struct napi_struct *napi)
2204 {
2205 struct ixgbe_q_vector *q_vector =
2206 container_of(napi, struct ixgbe_q_vector, napi);
2207 struct ixgbe_adapter *adapter = q_vector->adapter;
2208 struct ixgbe_ring *ring;
2209 int found = 0;
2210
2211 if (test_bit(__IXGBE_DOWN, &adapter->state))
2212 return LL_FLUSH_FAILED;
2213
2214 if (!ixgbe_qv_lock_poll(q_vector))
2215 return LL_FLUSH_BUSY;
2216
2217 ixgbe_for_each_ring(ring, q_vector->rx) {
2218 found = ixgbe_clean_rx_irq(q_vector, ring, 4);
2219 #ifdef BP_EXTENDED_STATS
2220 if (found)
2221 ring->stats.cleaned += found;
2222 else
2223 ring->stats.misses++;
2224 #endif
2225 if (found)
2226 break;
2227 }
2228
2229 ixgbe_qv_unlock_poll(q_vector);
2230
2231 return found;
2232 }
2233 #endif /* CONFIG_NET_RX_BUSY_POLL */
2234
2235 /**
2236 * ixgbe_configure_msix - Configure MSI-X hardware
2237 * @adapter: board private structure
2238 *
2239 * ixgbe_configure_msix sets up the hardware to properly generate MSI-X
2240 * interrupts.
2241 **/
2242 static void ixgbe_configure_msix(struct ixgbe_adapter *adapter)
2243 {
2244 struct ixgbe_q_vector *q_vector;
2245 int v_idx;
2246 u32 mask;
2247
2248 /* Populate MSIX to EITR Select */
2249 if (adapter->num_vfs > 32) {
2250 u32 eitrsel = BIT(adapter->num_vfs - 32) - 1;
2251 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, eitrsel);
2252 }
2253
2254 /*
2255 * Populate the IVAR table and set the ITR values to the
2256 * corresponding register.
2257 */
2258 for (v_idx = 0; v_idx < adapter->num_q_vectors; v_idx++) {
2259 struct ixgbe_ring *ring;
2260 q_vector = adapter->q_vector[v_idx];
2261
2262 ixgbe_for_each_ring(ring, q_vector->rx)
2263 ixgbe_set_ivar(adapter, 0, ring->reg_idx, v_idx);
2264
2265 ixgbe_for_each_ring(ring, q_vector->tx)
2266 ixgbe_set_ivar(adapter, 1, ring->reg_idx, v_idx);
2267
2268 ixgbe_write_eitr(q_vector);
2269 }
2270
2271 switch (adapter->hw.mac.type) {
2272 case ixgbe_mac_82598EB:
2273 ixgbe_set_ivar(adapter, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX,
2274 v_idx);
2275 break;
2276 case ixgbe_mac_82599EB:
2277 case ixgbe_mac_X540:
2278 case ixgbe_mac_X550:
2279 case ixgbe_mac_X550EM_x:
2280 case ixgbe_mac_x550em_a:
2281 ixgbe_set_ivar(adapter, -1, 1, v_idx);
2282 break;
2283 default:
2284 break;
2285 }
2286 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950);
2287
2288 /* set up to autoclear timer, and the vectors */
2289 mask = IXGBE_EIMS_ENABLE_MASK;
2290 mask &= ~(IXGBE_EIMS_OTHER |
2291 IXGBE_EIMS_MAILBOX |
2292 IXGBE_EIMS_LSC);
2293
2294 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask);
2295 }
2296
2297 enum latency_range {
2298 lowest_latency = 0,
2299 low_latency = 1,
2300 bulk_latency = 2,
2301 latency_invalid = 255
2302 };
2303
2304 /**
2305 * ixgbe_update_itr - update the dynamic ITR value based on statistics
2306 * @q_vector: structure containing interrupt and ring information
2307 * @ring_container: structure containing ring performance data
2308 *
2309 * Stores a new ITR value based on packets and byte
2310 * counts during the last interrupt. The advantage of per interrupt
2311 * computation is faster updates and more accurate ITR for the current
2312 * traffic pattern. Constants in this function were computed
2313 * based on theoretical maximum wire speed and thresholds were set based
2314 * on testing data as well as attempting to minimize response time
2315 * while increasing bulk throughput.
2316 * this functionality is controlled by the InterruptThrottleRate module
2317 * parameter (see ixgbe_param.c)
2318 **/
2319 static void ixgbe_update_itr(struct ixgbe_q_vector *q_vector,
2320 struct ixgbe_ring_container *ring_container)
2321 {
2322 int bytes = ring_container->total_bytes;
2323 int packets = ring_container->total_packets;
2324 u32 timepassed_us;
2325 u64 bytes_perint;
2326 u8 itr_setting = ring_container->itr;
2327
2328 if (packets == 0)
2329 return;
2330
2331 /* simple throttlerate management
2332 * 0-10MB/s lowest (100000 ints/s)
2333 * 10-20MB/s low (20000 ints/s)
2334 * 20-1249MB/s bulk (12000 ints/s)
2335 */
2336 /* what was last interrupt timeslice? */
2337 timepassed_us = q_vector->itr >> 2;
2338 if (timepassed_us == 0)
2339 return;
2340
2341 bytes_perint = bytes / timepassed_us; /* bytes/usec */
2342
2343 switch (itr_setting) {
2344 case lowest_latency:
2345 if (bytes_perint > 10)
2346 itr_setting = low_latency;
2347 break;
2348 case low_latency:
2349 if (bytes_perint > 20)
2350 itr_setting = bulk_latency;
2351 else if (bytes_perint <= 10)
2352 itr_setting = lowest_latency;
2353 break;
2354 case bulk_latency:
2355 if (bytes_perint <= 20)
2356 itr_setting = low_latency;
2357 break;
2358 }
2359
2360 /* clear work counters since we have the values we need */
2361 ring_container->total_bytes = 0;
2362 ring_container->total_packets = 0;
2363
2364 /* write updated itr to ring container */
2365 ring_container->itr = itr_setting;
2366 }
2367
2368 /**
2369 * ixgbe_write_eitr - write EITR register in hardware specific way
2370 * @q_vector: structure containing interrupt and ring information
2371 *
2372 * This function is made to be called by ethtool and by the driver
2373 * when it needs to update EITR registers at runtime. Hardware
2374 * specific quirks/differences are taken care of here.
2375 */
2376 void ixgbe_write_eitr(struct ixgbe_q_vector *q_vector)
2377 {
2378 struct ixgbe_adapter *adapter = q_vector->adapter;
2379 struct ixgbe_hw *hw = &adapter->hw;
2380 int v_idx = q_vector->v_idx;
2381 u32 itr_reg = q_vector->itr & IXGBE_MAX_EITR;
2382
2383 switch (adapter->hw.mac.type) {
2384 case ixgbe_mac_82598EB:
2385 /* must write high and low 16 bits to reset counter */
2386 itr_reg |= (itr_reg << 16);
2387 break;
2388 case ixgbe_mac_82599EB:
2389 case ixgbe_mac_X540:
2390 case ixgbe_mac_X550:
2391 case ixgbe_mac_X550EM_x:
2392 case ixgbe_mac_x550em_a:
2393 /*
2394 * set the WDIS bit to not clear the timer bits and cause an
2395 * immediate assertion of the interrupt
2396 */
2397 itr_reg |= IXGBE_EITR_CNT_WDIS;
2398 break;
2399 default:
2400 break;
2401 }
2402 IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg);
2403 }
2404
2405 static void ixgbe_set_itr(struct ixgbe_q_vector *q_vector)
2406 {
2407 u32 new_itr = q_vector->itr;
2408 u8 current_itr;
2409
2410 ixgbe_update_itr(q_vector, &q_vector->tx);
2411 ixgbe_update_itr(q_vector, &q_vector->rx);
2412
2413 current_itr = max(q_vector->rx.itr, q_vector->tx.itr);
2414
2415 switch (current_itr) {
2416 /* counts and packets in update_itr are dependent on these numbers */
2417 case lowest_latency:
2418 new_itr = IXGBE_100K_ITR;
2419 break;
2420 case low_latency:
2421 new_itr = IXGBE_20K_ITR;
2422 break;
2423 case bulk_latency:
2424 new_itr = IXGBE_12K_ITR;
2425 break;
2426 default:
2427 break;
2428 }
2429
2430 if (new_itr != q_vector->itr) {
2431 /* do an exponential smoothing */
2432 new_itr = (10 * new_itr * q_vector->itr) /
2433 ((9 * new_itr) + q_vector->itr);
2434
2435 /* save the algorithm value here */
2436 q_vector->itr = new_itr;
2437
2438 ixgbe_write_eitr(q_vector);
2439 }
2440 }
2441
2442 /**
2443 * ixgbe_check_overtemp_subtask - check for over temperature
2444 * @adapter: pointer to adapter
2445 **/
2446 static void ixgbe_check_overtemp_subtask(struct ixgbe_adapter *adapter)
2447 {
2448 struct ixgbe_hw *hw = &adapter->hw;
2449 u32 eicr = adapter->interrupt_event;
2450
2451 if (test_bit(__IXGBE_DOWN, &adapter->state))
2452 return;
2453
2454 if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) &&
2455 !(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_EVENT))
2456 return;
2457
2458 adapter->flags2 &= ~IXGBE_FLAG2_TEMP_SENSOR_EVENT;
2459
2460 switch (hw->device_id) {
2461 case IXGBE_DEV_ID_82599_T3_LOM:
2462 /*
2463 * Since the warning interrupt is for both ports
2464 * we don't have to check if:
2465 * - This interrupt wasn't for our port.
2466 * - We may have missed the interrupt so always have to
2467 * check if we got a LSC
2468 */
2469 if (!(eicr & IXGBE_EICR_GPI_SDP0_8259X) &&
2470 !(eicr & IXGBE_EICR_LSC))
2471 return;
2472
2473 if (!(eicr & IXGBE_EICR_LSC) && hw->mac.ops.check_link) {
2474 u32 speed;
2475 bool link_up = false;
2476
2477 hw->mac.ops.check_link(hw, &speed, &link_up, false);
2478
2479 if (link_up)
2480 return;
2481 }
2482
2483 /* Check if this is not due to overtemp */
2484 if (hw->phy.ops.check_overtemp(hw) != IXGBE_ERR_OVERTEMP)
2485 return;
2486
2487 break;
2488 default:
2489 if (adapter->hw.mac.type >= ixgbe_mac_X540)
2490 return;
2491 if (!(eicr & IXGBE_EICR_GPI_SDP0(hw)))
2492 return;
2493 break;
2494 }
2495 e_crit(drv, "%s\n", ixgbe_overheat_msg);
2496
2497 adapter->interrupt_event = 0;
2498 }
2499
2500 static void ixgbe_check_fan_failure(struct ixgbe_adapter *adapter, u32 eicr)
2501 {
2502 struct ixgbe_hw *hw = &adapter->hw;
2503
2504 if ((adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) &&
2505 (eicr & IXGBE_EICR_GPI_SDP1(hw))) {
2506 e_crit(probe, "Fan has stopped, replace the adapter\n");
2507 /* write to clear the interrupt */
2508 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1(hw));
2509 }
2510 }
2511
2512 static void ixgbe_check_overtemp_event(struct ixgbe_adapter *adapter, u32 eicr)
2513 {
2514 struct ixgbe_hw *hw = &adapter->hw;
2515
2516 if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE))
2517 return;
2518
2519 switch (adapter->hw.mac.type) {
2520 case ixgbe_mac_82599EB:
2521 /*
2522 * Need to check link state so complete overtemp check
2523 * on service task
2524 */
2525 if (((eicr & IXGBE_EICR_GPI_SDP0(hw)) ||
2526 (eicr & IXGBE_EICR_LSC)) &&
2527 (!test_bit(__IXGBE_DOWN, &adapter->state))) {
2528 adapter->interrupt_event = eicr;
2529 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_EVENT;
2530 ixgbe_service_event_schedule(adapter);
2531 return;
2532 }
2533 return;
2534 case ixgbe_mac_X540:
2535 if (!(eicr & IXGBE_EICR_TS))
2536 return;
2537 break;
2538 default:
2539 return;
2540 }
2541
2542 e_crit(drv, "%s\n", ixgbe_overheat_msg);
2543 }
2544
2545 static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw)
2546 {
2547 switch (hw->mac.type) {
2548 case ixgbe_mac_82598EB:
2549 if (hw->phy.type == ixgbe_phy_nl)
2550 return true;
2551 return false;
2552 case ixgbe_mac_82599EB:
2553 case ixgbe_mac_X550EM_x:
2554 case ixgbe_mac_x550em_a:
2555 switch (hw->mac.ops.get_media_type(hw)) {
2556 case ixgbe_media_type_fiber:
2557 case ixgbe_media_type_fiber_qsfp:
2558 return true;
2559 default:
2560 return false;
2561 }
2562 default:
2563 return false;
2564 }
2565 }
2566
2567 static void ixgbe_check_sfp_event(struct ixgbe_adapter *adapter, u32 eicr)
2568 {
2569 struct ixgbe_hw *hw = &adapter->hw;
2570 u32 eicr_mask = IXGBE_EICR_GPI_SDP2(hw);
2571
2572 if (!ixgbe_is_sfp(hw))
2573 return;
2574
2575 /* Later MAC's use different SDP */
2576 if (hw->mac.type >= ixgbe_mac_X540)
2577 eicr_mask = IXGBE_EICR_GPI_SDP0_X540;
2578
2579 if (eicr & eicr_mask) {
2580 /* Clear the interrupt */
2581 IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr_mask);
2582 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
2583 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET;
2584 adapter->sfp_poll_time = 0;
2585 ixgbe_service_event_schedule(adapter);
2586 }
2587 }
2588
2589 if (adapter->hw.mac.type == ixgbe_mac_82599EB &&
2590 (eicr & IXGBE_EICR_GPI_SDP1(hw))) {
2591 /* Clear the interrupt */
2592 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1(hw));
2593 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
2594 adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG;
2595 ixgbe_service_event_schedule(adapter);
2596 }
2597 }
2598 }
2599
2600 static void ixgbe_check_lsc(struct ixgbe_adapter *adapter)
2601 {
2602 struct ixgbe_hw *hw = &adapter->hw;
2603
2604 adapter->lsc_int++;
2605 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
2606 adapter->link_check_timeout = jiffies;
2607 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
2608 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC);
2609 IXGBE_WRITE_FLUSH(hw);
2610 ixgbe_service_event_schedule(adapter);
2611 }
2612 }
2613
2614 static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter *adapter,
2615 u64 qmask)
2616 {
2617 u32 mask;
2618 struct ixgbe_hw *hw = &adapter->hw;
2619
2620 switch (hw->mac.type) {
2621 case ixgbe_mac_82598EB:
2622 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
2623 IXGBE_WRITE_REG(hw, IXGBE_EIMS, mask);
2624 break;
2625 case ixgbe_mac_82599EB:
2626 case ixgbe_mac_X540:
2627 case ixgbe_mac_X550:
2628 case ixgbe_mac_X550EM_x:
2629 case ixgbe_mac_x550em_a:
2630 mask = (qmask & 0xFFFFFFFF);
2631 if (mask)
2632 IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(0), mask);
2633 mask = (qmask >> 32);
2634 if (mask)
2635 IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(1), mask);
2636 break;
2637 default:
2638 break;
2639 }
2640 /* skip the flush */
2641 }
2642
2643 static inline void ixgbe_irq_disable_queues(struct ixgbe_adapter *adapter,
2644 u64 qmask)
2645 {
2646 u32 mask;
2647 struct ixgbe_hw *hw = &adapter->hw;
2648
2649 switch (hw->mac.type) {
2650 case ixgbe_mac_82598EB:
2651 mask = (IXGBE_EIMS_RTX_QUEUE & qmask);
2652 IXGBE_WRITE_REG(hw, IXGBE_EIMC, mask);
2653 break;
2654 case ixgbe_mac_82599EB:
2655 case ixgbe_mac_X540:
2656 case ixgbe_mac_X550:
2657 case ixgbe_mac_X550EM_x:
2658 case ixgbe_mac_x550em_a:
2659 mask = (qmask & 0xFFFFFFFF);
2660 if (mask)
2661 IXGBE_WRITE_REG(hw, IXGBE_EIMC_EX(0), mask);
2662 mask = (qmask >> 32);
2663 if (mask)
2664 IXGBE_WRITE_REG(hw, IXGBE_EIMC_EX(1), mask);
2665 break;
2666 default:
2667 break;
2668 }
2669 /* skip the flush */
2670 }
2671
2672 /**
2673 * ixgbe_irq_enable - Enable default interrupt generation settings
2674 * @adapter: board private structure
2675 **/
2676 static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter, bool queues,
2677 bool flush)
2678 {
2679 struct ixgbe_hw *hw = &adapter->hw;
2680 u32 mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE);
2681
2682 /* don't reenable LSC while waiting for link */
2683 if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE)
2684 mask &= ~IXGBE_EIMS_LSC;
2685
2686 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)
2687 switch (adapter->hw.mac.type) {
2688 case ixgbe_mac_82599EB:
2689 mask |= IXGBE_EIMS_GPI_SDP0(hw);
2690 break;
2691 case ixgbe_mac_X540:
2692 case ixgbe_mac_X550:
2693 case ixgbe_mac_X550EM_x:
2694 case ixgbe_mac_x550em_a:
2695 mask |= IXGBE_EIMS_TS;
2696 break;
2697 default:
2698 break;
2699 }
2700 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE)
2701 mask |= IXGBE_EIMS_GPI_SDP1(hw);
2702 switch (adapter->hw.mac.type) {
2703 case ixgbe_mac_82599EB:
2704 mask |= IXGBE_EIMS_GPI_SDP1(hw);
2705 mask |= IXGBE_EIMS_GPI_SDP2(hw);
2706 /* fall through */
2707 case ixgbe_mac_X540:
2708 case ixgbe_mac_X550:
2709 case ixgbe_mac_X550EM_x:
2710 case ixgbe_mac_x550em_a:
2711 if (adapter->hw.device_id == IXGBE_DEV_ID_X550EM_X_SFP ||
2712 adapter->hw.device_id == IXGBE_DEV_ID_X550EM_A_SFP ||
2713 adapter->hw.device_id == IXGBE_DEV_ID_X550EM_A_SFP_N)
2714 mask |= IXGBE_EIMS_GPI_SDP0(&adapter->hw);
2715 if (adapter->hw.phy.type == ixgbe_phy_x550em_ext_t)
2716 mask |= IXGBE_EICR_GPI_SDP0_X540;
2717 mask |= IXGBE_EIMS_ECC;
2718 mask |= IXGBE_EIMS_MAILBOX;
2719 break;
2720 default:
2721 break;
2722 }
2723
2724 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) &&
2725 !(adapter->flags2 & IXGBE_FLAG2_FDIR_REQUIRES_REINIT))
2726 mask |= IXGBE_EIMS_FLOW_DIR;
2727
2728 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask);
2729 if (queues)
2730 ixgbe_irq_enable_queues(adapter, ~0);
2731 if (flush)
2732 IXGBE_WRITE_FLUSH(&adapter->hw);
2733 }
2734
2735 static irqreturn_t ixgbe_msix_other(int irq, void *data)
2736 {
2737 struct ixgbe_adapter *adapter = data;
2738 struct ixgbe_hw *hw = &adapter->hw;
2739 u32 eicr;
2740
2741 /*
2742 * Workaround for Silicon errata. Use clear-by-write instead
2743 * of clear-by-read. Reading with EICS will return the
2744 * interrupt causes without clearing, which later be done
2745 * with the write to EICR.
2746 */
2747 eicr = IXGBE_READ_REG(hw, IXGBE_EICS);
2748
2749 /* The lower 16bits of the EICR register are for the queue interrupts
2750 * which should be masked here in order to not accidentally clear them if
2751 * the bits are high when ixgbe_msix_other is called. There is a race
2752 * condition otherwise which results in possible performance loss
2753 * especially if the ixgbe_msix_other interrupt is triggering
2754 * consistently (as it would when PPS is turned on for the X540 device)
2755 */
2756 eicr &= 0xFFFF0000;
2757
2758 IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr);
2759
2760 if (eicr & IXGBE_EICR_LSC)
2761 ixgbe_check_lsc(adapter);
2762
2763 if (eicr & IXGBE_EICR_MAILBOX)
2764 ixgbe_msg_task(adapter);
2765
2766 switch (hw->mac.type) {
2767 case ixgbe_mac_82599EB:
2768 case ixgbe_mac_X540:
2769 case ixgbe_mac_X550:
2770 case ixgbe_mac_X550EM_x:
2771 case ixgbe_mac_x550em_a:
2772 if (hw->phy.type == ixgbe_phy_x550em_ext_t &&
2773 (eicr & IXGBE_EICR_GPI_SDP0_X540)) {
2774 adapter->flags2 |= IXGBE_FLAG2_PHY_INTERRUPT;
2775 ixgbe_service_event_schedule(adapter);
2776 IXGBE_WRITE_REG(hw, IXGBE_EICR,
2777 IXGBE_EICR_GPI_SDP0_X540);
2778 }
2779 if (eicr & IXGBE_EICR_ECC) {
2780 e_info(link, "Received ECC Err, initiating reset\n");
2781 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state);
2782 ixgbe_service_event_schedule(adapter);
2783 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_ECC);
2784 }
2785 /* Handle Flow Director Full threshold interrupt */
2786 if (eicr & IXGBE_EICR_FLOW_DIR) {
2787 int reinit_count = 0;
2788 int i;
2789 for (i = 0; i < adapter->num_tx_queues; i++) {
2790 struct ixgbe_ring *ring = adapter->tx_ring[i];
2791 if (test_and_clear_bit(__IXGBE_TX_FDIR_INIT_DONE,
2792 &ring->state))
2793 reinit_count++;
2794 }
2795 if (reinit_count) {
2796 /* no more flow director interrupts until after init */
2797 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_FLOW_DIR);
2798 adapter->flags2 |= IXGBE_FLAG2_FDIR_REQUIRES_REINIT;
2799 ixgbe_service_event_schedule(adapter);
2800 }
2801 }
2802 ixgbe_check_sfp_event(adapter, eicr);
2803 ixgbe_check_overtemp_event(adapter, eicr);
2804 break;
2805 default:
2806 break;
2807 }
2808
2809 ixgbe_check_fan_failure(adapter, eicr);
2810
2811 if (unlikely(eicr & IXGBE_EICR_TIMESYNC))
2812 ixgbe_ptp_check_pps_event(adapter);
2813
2814 /* re-enable the original interrupt state, no lsc, no queues */
2815 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2816 ixgbe_irq_enable(adapter, false, false);
2817
2818 return IRQ_HANDLED;
2819 }
2820
2821 static irqreturn_t ixgbe_msix_clean_rings(int irq, void *data)
2822 {
2823 struct ixgbe_q_vector *q_vector = data;
2824
2825 /* EIAM disabled interrupts (on this vector) for us */
2826
2827 if (q_vector->rx.ring || q_vector->tx.ring)
2828 napi_schedule_irqoff(&q_vector->napi);
2829
2830 return IRQ_HANDLED;
2831 }
2832
2833 /**
2834 * ixgbe_poll - NAPI Rx polling callback
2835 * @napi: structure for representing this polling device
2836 * @budget: how many packets driver is allowed to clean
2837 *
2838 * This function is used for legacy and MSI, NAPI mode
2839 **/
2840 int ixgbe_poll(struct napi_struct *napi, int budget)
2841 {
2842 struct ixgbe_q_vector *q_vector =
2843 container_of(napi, struct ixgbe_q_vector, napi);
2844 struct ixgbe_adapter *adapter = q_vector->adapter;
2845 struct ixgbe_ring *ring;
2846 int per_ring_budget, work_done = 0;
2847 bool clean_complete = true;
2848
2849 #ifdef CONFIG_IXGBE_DCA
2850 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
2851 ixgbe_update_dca(q_vector);
2852 #endif
2853
2854 ixgbe_for_each_ring(ring, q_vector->tx) {
2855 if (!ixgbe_clean_tx_irq(q_vector, ring, budget))
2856 clean_complete = false;
2857 }
2858
2859 /* Exit if we are called by netpoll or busy polling is active */
2860 if ((budget <= 0) || !ixgbe_qv_lock_napi(q_vector))
2861 return budget;
2862
2863 /* attempt to distribute budget to each queue fairly, but don't allow
2864 * the budget to go below 1 because we'll exit polling */
2865 if (q_vector->rx.count > 1)
2866 per_ring_budget = max(budget/q_vector->rx.count, 1);
2867 else
2868 per_ring_budget = budget;
2869
2870 ixgbe_for_each_ring(ring, q_vector->rx) {
2871 int cleaned = ixgbe_clean_rx_irq(q_vector, ring,
2872 per_ring_budget);
2873
2874 work_done += cleaned;
2875 if (cleaned >= per_ring_budget)
2876 clean_complete = false;
2877 }
2878
2879 ixgbe_qv_unlock_napi(q_vector);
2880 /* If all work not completed, return budget and keep polling */
2881 if (!clean_complete)
2882 return budget;
2883
2884 /* all work done, exit the polling mode */
2885 napi_complete_done(napi, work_done);
2886 if (adapter->rx_itr_setting & 1)
2887 ixgbe_set_itr(q_vector);
2888 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2889 ixgbe_irq_enable_queues(adapter, BIT_ULL(q_vector->v_idx));
2890
2891 return min(work_done, budget - 1);
2892 }
2893
2894 /**
2895 * ixgbe_request_msix_irqs - Initialize MSI-X interrupts
2896 * @adapter: board private structure
2897 *
2898 * ixgbe_request_msix_irqs allocates MSI-X vectors and requests
2899 * interrupts from the kernel.
2900 **/
2901 static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter)
2902 {
2903 struct net_device *netdev = adapter->netdev;
2904 int vector, err;
2905 int ri = 0, ti = 0;
2906
2907 for (vector = 0; vector < adapter->num_q_vectors; vector++) {
2908 struct ixgbe_q_vector *q_vector = adapter->q_vector[vector];
2909 struct msix_entry *entry = &adapter->msix_entries[vector];
2910
2911 if (q_vector->tx.ring && q_vector->rx.ring) {
2912 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2913 "%s-%s-%d", netdev->name, "TxRx", ri++);
2914 ti++;
2915 } else if (q_vector->rx.ring) {
2916 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2917 "%s-%s-%d", netdev->name, "rx", ri++);
2918 } else if (q_vector->tx.ring) {
2919 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2920 "%s-%s-%d", netdev->name, "tx", ti++);
2921 } else {
2922 /* skip this unused q_vector */
2923 continue;
2924 }
2925 err = request_irq(entry->vector, &ixgbe_msix_clean_rings, 0,
2926 q_vector->name, q_vector);
2927 if (err) {
2928 e_err(probe, "request_irq failed for MSIX interrupt "
2929 "Error: %d\n", err);
2930 goto free_queue_irqs;
2931 }
2932 /* If Flow Director is enabled, set interrupt affinity */
2933 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
2934 /* assign the mask for this irq */
2935 irq_set_affinity_hint(entry->vector,
2936 &q_vector->affinity_mask);
2937 }
2938 }
2939
2940 err = request_irq(adapter->msix_entries[vector].vector,
2941 ixgbe_msix_other, 0, netdev->name, adapter);
2942 if (err) {
2943 e_err(probe, "request_irq for msix_other failed: %d\n", err);
2944 goto free_queue_irqs;
2945 }
2946
2947 return 0;
2948
2949 free_queue_irqs:
2950 while (vector) {
2951 vector--;
2952 irq_set_affinity_hint(adapter->msix_entries[vector].vector,
2953 NULL);
2954 free_irq(adapter->msix_entries[vector].vector,
2955 adapter->q_vector[vector]);
2956 }
2957 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED;
2958 pci_disable_msix(adapter->pdev);
2959 kfree(adapter->msix_entries);
2960 adapter->msix_entries = NULL;
2961 return err;
2962 }
2963
2964 /**
2965 * ixgbe_intr - legacy mode Interrupt Handler
2966 * @irq: interrupt number
2967 * @data: pointer to a network interface device structure
2968 **/
2969 static irqreturn_t ixgbe_intr(int irq, void *data)
2970 {
2971 struct ixgbe_adapter *adapter = data;
2972 struct ixgbe_hw *hw = &adapter->hw;
2973 struct ixgbe_q_vector *q_vector = adapter->q_vector[0];
2974 u32 eicr;
2975
2976 /*
2977 * Workaround for silicon errata #26 on 82598. Mask the interrupt
2978 * before the read of EICR.
2979 */
2980 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
2981
2982 /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read
2983 * therefore no explicit interrupt disable is necessary */
2984 eicr = IXGBE_READ_REG(hw, IXGBE_EICR);
2985 if (!eicr) {
2986 /*
2987 * shared interrupt alert!
2988 * make sure interrupts are enabled because the read will
2989 * have disabled interrupts due to EIAM
2990 * finish the workaround of silicon errata on 82598. Unmask
2991 * the interrupt that we masked before the EICR read.
2992 */
2993 if (!test_bit(__IXGBE_DOWN, &adapter->state))
2994 ixgbe_irq_enable(adapter, true, true);
2995 return IRQ_NONE; /* Not our interrupt */
2996 }
2997
2998 if (eicr & IXGBE_EICR_LSC)
2999 ixgbe_check_lsc(adapter);
3000
3001 switch (hw->mac.type) {
3002 case ixgbe_mac_82599EB:
3003 ixgbe_check_sfp_event(adapter, eicr);
3004 /* Fall through */
3005 case ixgbe_mac_X540:
3006 case ixgbe_mac_X550:
3007 case ixgbe_mac_X550EM_x:
3008 case ixgbe_mac_x550em_a:
3009 if (eicr & IXGBE_EICR_ECC) {
3010 e_info(link, "Received ECC Err, initiating reset\n");
3011 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state);
3012 ixgbe_service_event_schedule(adapter);
3013 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_ECC);
3014 }
3015 ixgbe_check_overtemp_event(adapter, eicr);
3016 break;
3017 default:
3018 break;
3019 }
3020
3021 ixgbe_check_fan_failure(adapter, eicr);
3022 if (unlikely(eicr & IXGBE_EICR_TIMESYNC))
3023 ixgbe_ptp_check_pps_event(adapter);
3024
3025 /* would disable interrupts here but EIAM disabled it */
3026 napi_schedule_irqoff(&q_vector->napi);
3027
3028 /*
3029 * re-enable link(maybe) and non-queue interrupts, no flush.
3030 * ixgbe_poll will re-enable the queue interrupts
3031 */
3032 if (!test_bit(__IXGBE_DOWN, &adapter->state))
3033 ixgbe_irq_enable(adapter, false, false);
3034
3035 return IRQ_HANDLED;
3036 }
3037
3038 /**
3039 * ixgbe_request_irq - initialize interrupts
3040 * @adapter: board private structure
3041 *
3042 * Attempts to configure interrupts using the best available
3043 * capabilities of the hardware and kernel.
3044 **/
3045 static int ixgbe_request_irq(struct ixgbe_adapter *adapter)
3046 {
3047 struct net_device *netdev = adapter->netdev;
3048 int err;
3049
3050 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
3051 err = ixgbe_request_msix_irqs(adapter);
3052 else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED)
3053 err = request_irq(adapter->pdev->irq, ixgbe_intr, 0,
3054 netdev->name, adapter);
3055 else
3056 err = request_irq(adapter->pdev->irq, ixgbe_intr, IRQF_SHARED,
3057 netdev->name, adapter);
3058
3059 if (err)
3060 e_err(probe, "request_irq failed, Error %d\n", err);
3061
3062 return err;
3063 }
3064
3065 static void ixgbe_free_irq(struct ixgbe_adapter *adapter)
3066 {
3067 int vector;
3068
3069 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
3070 free_irq(adapter->pdev->irq, adapter);
3071 return;
3072 }
3073
3074 if (!adapter->msix_entries)
3075 return;
3076
3077 for (vector = 0; vector < adapter->num_q_vectors; vector++) {
3078 struct ixgbe_q_vector *q_vector = adapter->q_vector[vector];
3079 struct msix_entry *entry = &adapter->msix_entries[vector];
3080
3081 /* free only the irqs that were actually requested */
3082 if (!q_vector->rx.ring && !q_vector->tx.ring)
3083 continue;
3084
3085 /* clear the affinity_mask in the IRQ descriptor */
3086 irq_set_affinity_hint(entry->vector, NULL);
3087
3088 free_irq(entry->vector, q_vector);
3089 }
3090
3091 free_irq(adapter->msix_entries[vector].vector, adapter);
3092 }
3093
3094 /**
3095 * ixgbe_irq_disable - Mask off interrupt generation on the NIC
3096 * @adapter: board private structure
3097 **/
3098 static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter)
3099 {
3100 switch (adapter->hw.mac.type) {
3101 case ixgbe_mac_82598EB:
3102 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0);
3103 break;
3104 case ixgbe_mac_82599EB:
3105 case ixgbe_mac_X540:
3106 case ixgbe_mac_X550:
3107 case ixgbe_mac_X550EM_x:
3108 case ixgbe_mac_x550em_a:
3109 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 0xFFFF0000);
3110 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), ~0);
3111 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), ~0);
3112 break;
3113 default:
3114 break;
3115 }
3116 IXGBE_WRITE_FLUSH(&adapter->hw);
3117 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
3118 int vector;
3119
3120 for (vector = 0; vector < adapter->num_q_vectors; vector++)
3121 synchronize_irq(adapter->msix_entries[vector].vector);
3122
3123 synchronize_irq(adapter->msix_entries[vector++].vector);
3124 } else {
3125 synchronize_irq(adapter->pdev->irq);
3126 }
3127 }
3128
3129 /**
3130 * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts
3131 *
3132 **/
3133 static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter)
3134 {
3135 struct ixgbe_q_vector *q_vector = adapter->q_vector[0];
3136
3137 ixgbe_write_eitr(q_vector);
3138
3139 ixgbe_set_ivar(adapter, 0, 0, 0);
3140 ixgbe_set_ivar(adapter, 1, 0, 0);
3141
3142 e_info(hw, "Legacy interrupt IVAR setup done\n");
3143 }
3144
3145 /**
3146 * ixgbe_configure_tx_ring - Configure 8259x Tx ring after Reset
3147 * @adapter: board private structure
3148 * @ring: structure containing ring specific data
3149 *
3150 * Configure the Tx descriptor ring after a reset.
3151 **/
3152 void ixgbe_configure_tx_ring(struct ixgbe_adapter *adapter,
3153 struct ixgbe_ring *ring)
3154 {
3155 struct ixgbe_hw *hw = &adapter->hw;
3156 u64 tdba = ring->dma;
3157 int wait_loop = 10;
3158 u32 txdctl = IXGBE_TXDCTL_ENABLE;
3159 u8 reg_idx = ring->reg_idx;
3160
3161 /* disable queue to avoid issues while updating state */
3162 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), 0);
3163 IXGBE_WRITE_FLUSH(hw);
3164
3165 IXGBE_WRITE_REG(hw, IXGBE_TDBAL(reg_idx),
3166 (tdba & DMA_BIT_MASK(32)));
3167 IXGBE_WRITE_REG(hw, IXGBE_TDBAH(reg_idx), (tdba >> 32));
3168 IXGBE_WRITE_REG(hw, IXGBE_TDLEN(reg_idx),
3169 ring->count * sizeof(union ixgbe_adv_tx_desc));
3170 IXGBE_WRITE_REG(hw, IXGBE_TDH(reg_idx), 0);
3171 IXGBE_WRITE_REG(hw, IXGBE_TDT(reg_idx), 0);
3172 ring->tail = adapter->io_addr + IXGBE_TDT(reg_idx);
3173
3174 /*
3175 * set WTHRESH to encourage burst writeback, it should not be set
3176 * higher than 1 when:
3177 * - ITR is 0 as it could cause false TX hangs
3178 * - ITR is set to > 100k int/sec and BQL is enabled
3179 *
3180 * In order to avoid issues WTHRESH + PTHRESH should always be equal
3181 * to or less than the number of on chip descriptors, which is
3182 * currently 40.
3183 */
3184 if (!ring->q_vector || (ring->q_vector->itr < IXGBE_100K_ITR))
3185 txdctl |= 1u << 16; /* WTHRESH = 1 */
3186 else
3187 txdctl |= 8u << 16; /* WTHRESH = 8 */
3188
3189 /*
3190 * Setting PTHRESH to 32 both improves performance
3191 * and avoids a TX hang with DFP enabled
3192 */
3193 txdctl |= (1u << 8) | /* HTHRESH = 1 */
3194 32; /* PTHRESH = 32 */
3195
3196 /* reinitialize flowdirector state */
3197 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
3198 ring->atr_sample_rate = adapter->atr_sample_rate;
3199 ring->atr_count = 0;
3200 set_bit(__IXGBE_TX_FDIR_INIT_DONE, &ring->state);
3201 } else {
3202 ring->atr_sample_rate = 0;
3203 }
3204
3205 /* initialize XPS */
3206 if (!test_and_set_bit(__IXGBE_TX_XPS_INIT_DONE, &ring->state)) {
3207 struct ixgbe_q_vector *q_vector = ring->q_vector;
3208
3209 if (q_vector)
3210 netif_set_xps_queue(ring->netdev,
3211 &q_vector->affinity_mask,
3212 ring->queue_index);
3213 }
3214
3215 clear_bit(__IXGBE_HANG_CHECK_ARMED, &ring->state);
3216
3217 /* enable queue */
3218 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), txdctl);
3219
3220 /* TXDCTL.EN will return 0 on 82598 if link is down, so skip it */
3221 if (hw->mac.type == ixgbe_mac_82598EB &&
3222 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
3223 return;
3224
3225 /* poll to verify queue is enabled */
3226 do {
3227 usleep_range(1000, 2000);
3228 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx));
3229 } while (--wait_loop && !(txdctl & IXGBE_TXDCTL_ENABLE));
3230 if (!wait_loop)
3231 hw_dbg(hw, "Could not enable Tx Queue %d\n", reg_idx);
3232 }
3233
3234 static void ixgbe_setup_mtqc(struct ixgbe_adapter *adapter)
3235 {
3236 struct ixgbe_hw *hw = &adapter->hw;
3237 u32 rttdcs, mtqc;
3238 u8 tcs = netdev_get_num_tc(adapter->netdev);
3239
3240 if (hw->mac.type == ixgbe_mac_82598EB)
3241 return;
3242
3243 /* disable the arbiter while setting MTQC */
3244 rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS);
3245 rttdcs |= IXGBE_RTTDCS_ARBDIS;
3246 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
3247
3248 /* set transmit pool layout */
3249 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
3250 mtqc = IXGBE_MTQC_VT_ENA;
3251 if (tcs > 4)
3252 mtqc |= IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ;
3253 else if (tcs > 1)
3254 mtqc |= IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ;
3255 else if (adapter->ring_feature[RING_F_VMDQ].mask ==
3256 IXGBE_82599_VMDQ_4Q_MASK)
3257 mtqc |= IXGBE_MTQC_32VF;
3258 else
3259 mtqc |= IXGBE_MTQC_64VF;
3260 } else {
3261 if (tcs > 4)
3262 mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ;
3263 else if (tcs > 1)
3264 mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ;
3265 else
3266 mtqc = IXGBE_MTQC_64Q_1PB;
3267 }
3268
3269 IXGBE_WRITE_REG(hw, IXGBE_MTQC, mtqc);
3270
3271 /* Enable Security TX Buffer IFG for multiple pb */
3272 if (tcs) {
3273 u32 sectx = IXGBE_READ_REG(hw, IXGBE_SECTXMINIFG);
3274 sectx |= IXGBE_SECTX_DCB;
3275 IXGBE_WRITE_REG(hw, IXGBE_SECTXMINIFG, sectx);
3276 }
3277
3278 /* re-enable the arbiter */
3279 rttdcs &= ~IXGBE_RTTDCS_ARBDIS;
3280 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs);
3281 }
3282
3283 /**
3284 * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset
3285 * @adapter: board private structure
3286 *
3287 * Configure the Tx unit of the MAC after a reset.
3288 **/
3289 static void ixgbe_configure_tx(struct ixgbe_adapter *adapter)
3290 {
3291 struct ixgbe_hw *hw = &adapter->hw;
3292 u32 dmatxctl;
3293 u32 i;
3294
3295 ixgbe_setup_mtqc(adapter);
3296
3297 if (hw->mac.type != ixgbe_mac_82598EB) {
3298 /* DMATXCTL.EN must be before Tx queues are enabled */
3299 dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL);
3300 dmatxctl |= IXGBE_DMATXCTL_TE;
3301 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl);
3302 }
3303
3304 /* Setup the HW Tx Head and Tail descriptor pointers */
3305 for (i = 0; i < adapter->num_tx_queues; i++)
3306 ixgbe_configure_tx_ring(adapter, adapter->tx_ring[i]);
3307 }
3308
3309 static void ixgbe_enable_rx_drop(struct ixgbe_adapter *adapter,
3310 struct ixgbe_ring *ring)
3311 {
3312 struct ixgbe_hw *hw = &adapter->hw;
3313 u8 reg_idx = ring->reg_idx;
3314 u32 srrctl = IXGBE_READ_REG(hw, IXGBE_SRRCTL(reg_idx));
3315
3316 srrctl |= IXGBE_SRRCTL_DROP_EN;
3317
3318 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl);
3319 }
3320
3321 static void ixgbe_disable_rx_drop(struct ixgbe_adapter *adapter,
3322 struct ixgbe_ring *ring)
3323 {
3324 struct ixgbe_hw *hw = &adapter->hw;
3325 u8 reg_idx = ring->reg_idx;
3326 u32 srrctl = IXGBE_READ_REG(hw, IXGBE_SRRCTL(reg_idx));
3327
3328 srrctl &= ~IXGBE_SRRCTL_DROP_EN;
3329
3330 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl);
3331 }
3332
3333 #ifdef CONFIG_IXGBE_DCB
3334 void ixgbe_set_rx_drop_en(struct ixgbe_adapter *adapter)
3335 #else
3336 static void ixgbe_set_rx_drop_en(struct ixgbe_adapter *adapter)
3337 #endif
3338 {
3339 int i;
3340 bool pfc_en = adapter->dcb_cfg.pfc_mode_enable;
3341
3342 if (adapter->ixgbe_ieee_pfc)
3343 pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en);
3344
3345 /*
3346 * We should set the drop enable bit if:
3347 * SR-IOV is enabled
3348 * or
3349 * Number of Rx queues > 1 and flow control is disabled
3350 *
3351 * This allows us to avoid head of line blocking for security
3352 * and performance reasons.
3353 */
3354 if (adapter->num_vfs || (adapter->num_rx_queues > 1 &&
3355 !(adapter->hw.fc.current_mode & ixgbe_fc_tx_pause) && !pfc_en)) {
3356 for (i = 0; i < adapter->num_rx_queues; i++)
3357 ixgbe_enable_rx_drop(adapter, adapter->rx_ring[i]);
3358 } else {
3359 for (i = 0; i < adapter->num_rx_queues; i++)
3360 ixgbe_disable_rx_drop(adapter, adapter->rx_ring[i]);
3361 }
3362 }
3363
3364 #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
3365
3366 static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter,
3367 struct ixgbe_ring *rx_ring)
3368 {
3369 struct ixgbe_hw *hw = &adapter->hw;
3370 u32 srrctl;
3371 u8 reg_idx = rx_ring->reg_idx;
3372
3373 if (hw->mac.type == ixgbe_mac_82598EB) {
3374 u16 mask = adapter->ring_feature[RING_F_RSS].mask;
3375
3376 /*
3377 * if VMDq is not active we must program one srrctl register
3378 * per RSS queue since we have enabled RDRXCTL.MVMEN
3379 */
3380 reg_idx &= mask;
3381 }
3382
3383 /* configure header buffer length, needed for RSC */
3384 srrctl = IXGBE_RX_HDR_SIZE << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT;
3385
3386 /* configure the packet buffer length */
3387 srrctl |= ixgbe_rx_bufsz(rx_ring) >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
3388
3389 /* configure descriptor type */
3390 srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF;
3391
3392 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl);
3393 }
3394
3395 /**
3396 * ixgbe_rss_indir_tbl_entries - Return RSS indirection table entries
3397 * @adapter: device handle
3398 *
3399 * - 82598/82599/X540: 128
3400 * - X550(non-SRIOV mode): 512
3401 * - X550(SRIOV mode): 64
3402 */
3403 u32 ixgbe_rss_indir_tbl_entries(struct ixgbe_adapter *adapter)
3404 {
3405 if (adapter->hw.mac.type < ixgbe_mac_X550)
3406 return 128;
3407 else if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
3408 return 64;
3409 else
3410 return 512;
3411 }
3412
3413 /**
3414 * ixgbe_store_reta - Write the RETA table to HW
3415 * @adapter: device handle
3416 *
3417 * Write the RSS redirection table stored in adapter.rss_indir_tbl[] to HW.
3418 */
3419 void ixgbe_store_reta(struct ixgbe_adapter *adapter)
3420 {
3421 u32 i, reta_entries = ixgbe_rss_indir_tbl_entries(adapter);
3422 struct ixgbe_hw *hw = &adapter->hw;
3423 u32 reta = 0;
3424 u32 indices_multi;
3425 u8 *indir_tbl = adapter->rss_indir_tbl;
3426
3427 /* Fill out the redirection table as follows:
3428 * - 82598: 8 bit wide entries containing pair of 4 bit RSS
3429 * indices.
3430 * - 82599/X540: 8 bit wide entries containing 4 bit RSS index
3431 * - X550: 8 bit wide entries containing 6 bit RSS index
3432 */
3433 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
3434 indices_multi = 0x11;
3435 else
3436 indices_multi = 0x1;
3437
3438 /* Write redirection table to HW */
3439 for (i = 0; i < reta_entries; i++) {
3440 reta |= indices_multi * indir_tbl[i] << (i & 0x3) * 8;
3441 if ((i & 3) == 3) {
3442 if (i < 128)
3443 IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta);
3444 else
3445 IXGBE_WRITE_REG(hw, IXGBE_ERETA((i >> 2) - 32),
3446 reta);
3447 reta = 0;
3448 }
3449 }
3450 }
3451
3452 /**
3453 * ixgbe_store_vfreta - Write the RETA table to HW (x550 devices in SRIOV mode)
3454 * @adapter: device handle
3455 *
3456 * Write the RSS redirection table stored in adapter.rss_indir_tbl[] to HW.
3457 */
3458 static void ixgbe_store_vfreta(struct ixgbe_adapter *adapter)
3459 {
3460 u32 i, reta_entries = ixgbe_rss_indir_tbl_entries(adapter);
3461 struct ixgbe_hw *hw = &adapter->hw;
3462 u32 vfreta = 0;
3463 unsigned int pf_pool = adapter->num_vfs;
3464
3465 /* Write redirection table to HW */
3466 for (i = 0; i < reta_entries; i++) {
3467 vfreta |= (u32)adapter->rss_indir_tbl[i] << (i & 0x3) * 8;
3468 if ((i & 3) == 3) {
3469 IXGBE_WRITE_REG(hw, IXGBE_PFVFRETA(i >> 2, pf_pool),
3470 vfreta);
3471 vfreta = 0;
3472 }
3473 }
3474 }
3475
3476 static void ixgbe_setup_reta(struct ixgbe_adapter *adapter)
3477 {
3478 struct ixgbe_hw *hw = &adapter->hw;
3479 u32 i, j;
3480 u32 reta_entries = ixgbe_rss_indir_tbl_entries(adapter);
3481 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices;
3482
3483 /* Program table for at least 4 queues w/ SR-IOV so that VFs can
3484 * make full use of any rings they may have. We will use the
3485 * PSRTYPE register to control how many rings we use within the PF.
3486 */
3487 if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) && (rss_i < 4))
3488 rss_i = 4;
3489
3490 /* Fill out hash function seeds */
3491 for (i = 0; i < 10; i++)
3492 IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), adapter->rss_key[i]);
3493
3494 /* Fill out redirection table */
3495 memset(adapter->rss_indir_tbl, 0, sizeof(adapter->rss_indir_tbl));
3496
3497 for (i = 0, j = 0; i < reta_entries; i++, j++) {
3498 if (j == rss_i)
3499 j = 0;
3500
3501 adapter->rss_indir_tbl[i] = j;
3502 }
3503
3504 ixgbe_store_reta(adapter);
3505 }
3506
3507 static void ixgbe_setup_vfreta(struct ixgbe_adapter *adapter)
3508 {
3509 struct ixgbe_hw *hw = &adapter->hw;
3510 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices;
3511 unsigned int pf_pool = adapter->num_vfs;
3512 int i, j;
3513
3514 /* Fill out hash function seeds */
3515 for (i = 0; i < 10; i++)
3516 IXGBE_WRITE_REG(hw, IXGBE_PFVFRSSRK(i, pf_pool),
3517 adapter->rss_key[i]);
3518
3519 /* Fill out the redirection table */
3520 for (i = 0, j = 0; i < 64; i++, j++) {
3521 if (j == rss_i)
3522 j = 0;
3523
3524 adapter->rss_indir_tbl[i] = j;
3525 }
3526
3527 ixgbe_store_vfreta(adapter);
3528 }
3529
3530 static void ixgbe_setup_mrqc(struct ixgbe_adapter *adapter)
3531 {
3532 struct ixgbe_hw *hw = &adapter->hw;
3533 u32 mrqc = 0, rss_field = 0, vfmrqc = 0;
3534 u32 rxcsum;
3535
3536 /* Disable indicating checksum in descriptor, enables RSS hash */
3537 rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM);
3538 rxcsum |= IXGBE_RXCSUM_PCSD;
3539 IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum);
3540
3541 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
3542 if (adapter->ring_feature[RING_F_RSS].mask)
3543 mrqc = IXGBE_MRQC_RSSEN;
3544 } else {
3545 u8 tcs = netdev_get_num_tc(adapter->netdev);
3546
3547 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
3548 if (tcs > 4)
3549 mrqc = IXGBE_MRQC_VMDQRT8TCEN; /* 8 TCs */
3550 else if (tcs > 1)
3551 mrqc = IXGBE_MRQC_VMDQRT4TCEN; /* 4 TCs */
3552 else if (adapter->ring_feature[RING_F_VMDQ].mask ==
3553 IXGBE_82599_VMDQ_4Q_MASK)
3554 mrqc = IXGBE_MRQC_VMDQRSS32EN;
3555 else
3556 mrqc = IXGBE_MRQC_VMDQRSS64EN;
3557 } else {
3558 if (tcs > 4)
3559 mrqc = IXGBE_MRQC_RTRSS8TCEN;
3560 else if (tcs > 1)
3561 mrqc = IXGBE_MRQC_RTRSS4TCEN;
3562 else
3563 mrqc = IXGBE_MRQC_RSSEN;
3564 }
3565 }
3566
3567 /* Perform hash on these packet types */
3568 rss_field |= IXGBE_MRQC_RSS_FIELD_IPV4 |
3569 IXGBE_MRQC_RSS_FIELD_IPV4_TCP |
3570 IXGBE_MRQC_RSS_FIELD_IPV6 |
3571 IXGBE_MRQC_RSS_FIELD_IPV6_TCP;
3572
3573 if (adapter->flags2 & IXGBE_FLAG2_RSS_FIELD_IPV4_UDP)
3574 rss_field |= IXGBE_MRQC_RSS_FIELD_IPV4_UDP;
3575 if (adapter->flags2 & IXGBE_FLAG2_RSS_FIELD_IPV6_UDP)
3576 rss_field |= IXGBE_MRQC_RSS_FIELD_IPV6_UDP;
3577
3578 netdev_rss_key_fill(adapter->rss_key, sizeof(adapter->rss_key));
3579 if ((hw->mac.type >= ixgbe_mac_X550) &&
3580 (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) {
3581 unsigned int pf_pool = adapter->num_vfs;
3582
3583 /* Enable VF RSS mode */
3584 mrqc |= IXGBE_MRQC_MULTIPLE_RSS;
3585 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
3586
3587 /* Setup RSS through the VF registers */
3588 ixgbe_setup_vfreta(adapter);
3589 vfmrqc = IXGBE_MRQC_RSSEN;
3590 vfmrqc |= rss_field;
3591 IXGBE_WRITE_REG(hw, IXGBE_PFVFMRQC(pf_pool), vfmrqc);
3592 } else {
3593 ixgbe_setup_reta(adapter);
3594 mrqc |= rss_field;
3595 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc);
3596 }
3597 }
3598
3599 /**
3600 * ixgbe_configure_rscctl - enable RSC for the indicated ring
3601 * @adapter: address of board private structure
3602 * @index: index of ring to set
3603 **/
3604 static void ixgbe_configure_rscctl(struct ixgbe_adapter *adapter,
3605 struct ixgbe_ring *ring)
3606 {
3607 struct ixgbe_hw *hw = &adapter->hw;
3608 u32 rscctrl;
3609 u8 reg_idx = ring->reg_idx;
3610
3611 if (!ring_is_rsc_enabled(ring))
3612 return;
3613
3614 rscctrl = IXGBE_READ_REG(hw, IXGBE_RSCCTL(reg_idx));
3615 rscctrl |= IXGBE_RSCCTL_RSCEN;
3616 /*
3617 * we must limit the number of descriptors so that the
3618 * total size of max desc * buf_len is not greater
3619 * than 65536
3620 */
3621 rscctrl |= IXGBE_RSCCTL_MAXDESC_16;
3622 IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(reg_idx), rscctrl);
3623 }
3624
3625 #define IXGBE_MAX_RX_DESC_POLL 10
3626 static void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter *adapter,
3627 struct ixgbe_ring *ring)
3628 {
3629 struct ixgbe_hw *hw = &adapter->hw;
3630 int wait_loop = IXGBE_MAX_RX_DESC_POLL;
3631 u32 rxdctl;
3632 u8 reg_idx = ring->reg_idx;
3633
3634 if (ixgbe_removed(hw->hw_addr))
3635 return;
3636 /* RXDCTL.EN will return 0 on 82598 if link is down, so skip it */
3637 if (hw->mac.type == ixgbe_mac_82598EB &&
3638 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
3639 return;
3640
3641 do {
3642 usleep_range(1000, 2000);
3643 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
3644 } while (--wait_loop && !(rxdctl & IXGBE_RXDCTL_ENABLE));
3645
3646 if (!wait_loop) {
3647 e_err(drv, "RXDCTL.ENABLE on Rx queue %d not set within "
3648 "the polling period\n", reg_idx);
3649 }
3650 }
3651
3652 void ixgbe_disable_rx_queue(struct ixgbe_adapter *adapter,
3653 struct ixgbe_ring *ring)
3654 {
3655 struct ixgbe_hw *hw = &adapter->hw;
3656 int wait_loop = IXGBE_MAX_RX_DESC_POLL;
3657 u32 rxdctl;
3658 u8 reg_idx = ring->reg_idx;
3659
3660 if (ixgbe_removed(hw->hw_addr))
3661 return;
3662 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
3663 rxdctl &= ~IXGBE_RXDCTL_ENABLE;
3664
3665 /* write value back with RXDCTL.ENABLE bit cleared */
3666 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl);
3667
3668 if (hw->mac.type == ixgbe_mac_82598EB &&
3669 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
3670 return;
3671
3672 /* the hardware may take up to 100us to really disable the rx queue */
3673 do {
3674 udelay(10);
3675 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
3676 } while (--wait_loop && (rxdctl & IXGBE_RXDCTL_ENABLE));
3677
3678 if (!wait_loop) {
3679 e_err(drv, "RXDCTL.ENABLE on Rx queue %d not cleared within "
3680 "the polling period\n", reg_idx);
3681 }
3682 }
3683
3684 void ixgbe_configure_rx_ring(struct ixgbe_adapter *adapter,
3685 struct ixgbe_ring *ring)
3686 {
3687 struct ixgbe_hw *hw = &adapter->hw;
3688 u64 rdba = ring->dma;
3689 u32 rxdctl;
3690 u8 reg_idx = ring->reg_idx;
3691
3692 /* disable queue to avoid issues while updating state */
3693 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx));
3694 ixgbe_disable_rx_queue(adapter, ring);
3695
3696 IXGBE_WRITE_REG(hw, IXGBE_RDBAL(reg_idx), (rdba & DMA_BIT_MASK(32)));
3697 IXGBE_WRITE_REG(hw, IXGBE_RDBAH(reg_idx), (rdba >> 32));
3698 IXGBE_WRITE_REG(hw, IXGBE_RDLEN(reg_idx),
3699 ring->count * sizeof(union ixgbe_adv_rx_desc));
3700 /* Force flushing of IXGBE_RDLEN to prevent MDD */
3701 IXGBE_WRITE_FLUSH(hw);
3702
3703 IXGBE_WRITE_REG(hw, IXGBE_RDH(reg_idx), 0);
3704 IXGBE_WRITE_REG(hw, IXGBE_RDT(reg_idx), 0);
3705 ring->tail = adapter->io_addr + IXGBE_RDT(reg_idx);
3706
3707 ixgbe_configure_srrctl(adapter, ring);
3708 ixgbe_configure_rscctl(adapter, ring);
3709
3710 if (hw->mac.type == ixgbe_mac_82598EB) {
3711 /*
3712 * enable cache line friendly hardware writes:
3713 * PTHRESH=32 descriptors (half the internal cache),
3714 * this also removes ugly rx_no_buffer_count increment
3715 * HTHRESH=4 descriptors (to minimize latency on fetch)
3716 * WTHRESH=8 burst writeback up to two cache lines
3717 */
3718 rxdctl &= ~0x3FFFFF;
3719 rxdctl |= 0x080420;
3720 }
3721
3722 /* enable receive descriptor ring */
3723 rxdctl |= IXGBE_RXDCTL_ENABLE;
3724 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl);
3725
3726 ixgbe_rx_desc_queue_enable(adapter, ring);
3727 ixgbe_alloc_rx_buffers(ring, ixgbe_desc_unused(ring));
3728 }
3729
3730 static void ixgbe_setup_psrtype(struct ixgbe_adapter *adapter)
3731 {
3732 struct ixgbe_hw *hw = &adapter->hw;
3733 int rss_i = adapter->ring_feature[RING_F_RSS].indices;
3734 u16 pool;
3735
3736 /* PSRTYPE must be initialized in non 82598 adapters */
3737 u32 psrtype = IXGBE_PSRTYPE_TCPHDR |
3738 IXGBE_PSRTYPE_UDPHDR |
3739 IXGBE_PSRTYPE_IPV4HDR |
3740 IXGBE_PSRTYPE_L2HDR |
3741 IXGBE_PSRTYPE_IPV6HDR;
3742
3743 if (hw->mac.type == ixgbe_mac_82598EB)
3744 return;
3745
3746 if (rss_i > 3)
3747 psrtype |= 2u << 29;
3748 else if (rss_i > 1)
3749 psrtype |= 1u << 29;
3750
3751 for_each_set_bit(pool, &adapter->fwd_bitmask, 32)
3752 IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(VMDQ_P(pool)), psrtype);
3753 }
3754
3755 static void ixgbe_configure_virtualization(struct ixgbe_adapter *adapter)
3756 {
3757 struct ixgbe_hw *hw = &adapter->hw;
3758 u32 reg_offset, vf_shift;
3759 u32 gcr_ext, vmdctl;
3760 int i;
3761
3762 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
3763 return;
3764
3765 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
3766 vmdctl |= IXGBE_VMD_CTL_VMDQ_EN;
3767 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK;
3768 vmdctl |= VMDQ_P(0) << IXGBE_VT_CTL_POOL_SHIFT;
3769 vmdctl |= IXGBE_VT_CTL_REPLEN;
3770 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl);
3771
3772 vf_shift = VMDQ_P(0) % 32;
3773 reg_offset = (VMDQ_P(0) >= 32) ? 1 : 0;
3774
3775 /* Enable only the PF's pool for Tx/Rx */
3776 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), GENMASK(31, vf_shift));
3777 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset ^ 1), reg_offset - 1);
3778 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), GENMASK(31, vf_shift));
3779 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset ^ 1), reg_offset - 1);
3780 if (adapter->bridge_mode == BRIDGE_MODE_VEB)
3781 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN);
3782
3783 /* Map PF MAC address in RAR Entry 0 to first pool following VFs */
3784 hw->mac.ops.set_vmdq(hw, 0, VMDQ_P(0));
3785
3786 /* clear VLAN promisc flag so VFTA will be updated if necessary */
3787 adapter->flags2 &= ~IXGBE_FLAG2_VLAN_PROMISC;
3788
3789 /*
3790 * Set up VF register offsets for selected VT Mode,
3791 * i.e. 32 or 64 VFs for SR-IOV
3792 */
3793 switch (adapter->ring_feature[RING_F_VMDQ].mask) {
3794 case IXGBE_82599_VMDQ_8Q_MASK:
3795 gcr_ext = IXGBE_GCR_EXT_VT_MODE_16;
3796 break;
3797 case IXGBE_82599_VMDQ_4Q_MASK:
3798 gcr_ext = IXGBE_GCR_EXT_VT_MODE_32;
3799 break;
3800 default:
3801 gcr_ext = IXGBE_GCR_EXT_VT_MODE_64;
3802 break;
3803 }
3804
3805 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext);
3806
3807 for (i = 0; i < adapter->num_vfs; i++) {
3808 /* configure spoof checking */
3809 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, i,
3810 adapter->vfinfo[i].spoofchk_enabled);
3811
3812 /* Enable/Disable RSS query feature */
3813 ixgbe_ndo_set_vf_rss_query_en(adapter->netdev, i,
3814 adapter->vfinfo[i].rss_query_enabled);
3815 }
3816 }
3817
3818 static void ixgbe_set_rx_buffer_len(struct ixgbe_adapter *adapter)
3819 {
3820 struct ixgbe_hw *hw = &adapter->hw;
3821 struct net_device *netdev = adapter->netdev;
3822 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
3823 struct ixgbe_ring *rx_ring;
3824 int i;
3825 u32 mhadd, hlreg0;
3826
3827 #ifdef IXGBE_FCOE
3828 /* adjust max frame to be able to do baby jumbo for FCoE */
3829 if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) &&
3830 (max_frame < IXGBE_FCOE_JUMBO_FRAME_SIZE))
3831 max_frame = IXGBE_FCOE_JUMBO_FRAME_SIZE;
3832
3833 #endif /* IXGBE_FCOE */
3834
3835 /* adjust max frame to be at least the size of a standard frame */
3836 if (max_frame < (ETH_FRAME_LEN + ETH_FCS_LEN))
3837 max_frame = (ETH_FRAME_LEN + ETH_FCS_LEN);
3838
3839 mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD);
3840 if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) {
3841 mhadd &= ~IXGBE_MHADD_MFS_MASK;
3842 mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT;
3843
3844 IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd);
3845 }
3846
3847 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
3848 /* set jumbo enable since MHADD.MFS is keeping size locked at max_frame */
3849 hlreg0 |= IXGBE_HLREG0_JUMBOEN;
3850 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
3851
3852 /*
3853 * Setup the HW Rx Head and Tail Descriptor Pointers and
3854 * the Base and Length of the Rx Descriptor Ring
3855 */
3856 for (i = 0; i < adapter->num_rx_queues; i++) {
3857 rx_ring = adapter->rx_ring[i];
3858 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
3859 set_ring_rsc_enabled(rx_ring);
3860 else
3861 clear_ring_rsc_enabled(rx_ring);
3862 }
3863 }
3864
3865 static void ixgbe_setup_rdrxctl(struct ixgbe_adapter *adapter)
3866 {
3867 struct ixgbe_hw *hw = &adapter->hw;
3868 u32 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
3869
3870 switch (hw->mac.type) {
3871 case ixgbe_mac_82598EB:
3872 /*
3873 * For VMDq support of different descriptor types or
3874 * buffer sizes through the use of multiple SRRCTL
3875 * registers, RDRXCTL.MVMEN must be set to 1
3876 *
3877 * also, the manual doesn't mention it clearly but DCA hints
3878 * will only use queue 0's tags unless this bit is set. Side
3879 * effects of setting this bit are only that SRRCTL must be
3880 * fully programmed [0..15]
3881 */
3882 rdrxctl |= IXGBE_RDRXCTL_MVMEN;
3883 break;
3884 case ixgbe_mac_X550:
3885 case ixgbe_mac_X550EM_x:
3886 case ixgbe_mac_x550em_a:
3887 if (adapter->num_vfs)
3888 rdrxctl |= IXGBE_RDRXCTL_PSP;
3889 /* fall through for older HW */
3890 case ixgbe_mac_82599EB:
3891 case ixgbe_mac_X540:
3892 /* Disable RSC for ACK packets */
3893 IXGBE_WRITE_REG(hw, IXGBE_RSCDBU,
3894 (IXGBE_RSCDBU_RSCACKDIS | IXGBE_READ_REG(hw, IXGBE_RSCDBU)));
3895 rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE;
3896 /* hardware requires some bits to be set by default */
3897 rdrxctl |= (IXGBE_RDRXCTL_RSCACKC | IXGBE_RDRXCTL_FCOE_WRFIX);
3898 rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP;
3899 break;
3900 default:
3901 /* We should do nothing since we don't know this hardware */
3902 return;
3903 }
3904
3905 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl);
3906 }
3907
3908 /**
3909 * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset
3910 * @adapter: board private structure
3911 *
3912 * Configure the Rx unit of the MAC after a reset.
3913 **/
3914 static void ixgbe_configure_rx(struct ixgbe_adapter *adapter)
3915 {
3916 struct ixgbe_hw *hw = &adapter->hw;
3917 int i;
3918 u32 rxctrl, rfctl;
3919
3920 /* disable receives while setting up the descriptors */
3921 hw->mac.ops.disable_rx(hw);
3922
3923 ixgbe_setup_psrtype(adapter);
3924 ixgbe_setup_rdrxctl(adapter);
3925
3926 /* RSC Setup */
3927 rfctl = IXGBE_READ_REG(hw, IXGBE_RFCTL);
3928 rfctl &= ~IXGBE_RFCTL_RSC_DIS;
3929 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED))
3930 rfctl |= IXGBE_RFCTL_RSC_DIS;
3931
3932 /* disable NFS filtering */
3933 rfctl |= (IXGBE_RFCTL_NFSW_DIS | IXGBE_RFCTL_NFSR_DIS);
3934 IXGBE_WRITE_REG(hw, IXGBE_RFCTL, rfctl);
3935
3936 /* Program registers for the distribution of queues */
3937 ixgbe_setup_mrqc(adapter);
3938
3939 /* set_rx_buffer_len must be called before ring initialization */
3940 ixgbe_set_rx_buffer_len(adapter);
3941
3942 /*
3943 * Setup the HW Rx Head and Tail Descriptor Pointers and
3944 * the Base and Length of the Rx Descriptor Ring
3945 */
3946 for (i = 0; i < adapter->num_rx_queues; i++)
3947 ixgbe_configure_rx_ring(adapter, adapter->rx_ring[i]);
3948
3949 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
3950 /* disable drop enable for 82598 parts */
3951 if (hw->mac.type == ixgbe_mac_82598EB)
3952 rxctrl |= IXGBE_RXCTRL_DMBYPS;
3953
3954 /* enable all receives */
3955 rxctrl |= IXGBE_RXCTRL_RXEN;
3956 hw->mac.ops.enable_rx_dma(hw, rxctrl);
3957 }
3958
3959 static int ixgbe_vlan_rx_add_vid(struct net_device *netdev,
3960 __be16 proto, u16 vid)
3961 {
3962 struct ixgbe_adapter *adapter = netdev_priv(netdev);
3963 struct ixgbe_hw *hw = &adapter->hw;
3964
3965 /* add VID to filter table */
3966 if (!vid || !(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
3967 hw->mac.ops.set_vfta(&adapter->hw, vid, VMDQ_P(0), true, !!vid);
3968
3969 set_bit(vid, adapter->active_vlans);
3970
3971 return 0;
3972 }
3973
3974 static int ixgbe_find_vlvf_entry(struct ixgbe_hw *hw, u32 vlan)
3975 {
3976 u32 vlvf;
3977 int idx;
3978
3979 /* short cut the special case */
3980 if (vlan == 0)
3981 return 0;
3982
3983 /* Search for the vlan id in the VLVF entries */
3984 for (idx = IXGBE_VLVF_ENTRIES; --idx;) {
3985 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(idx));
3986 if ((vlvf & VLAN_VID_MASK) == vlan)
3987 break;
3988 }
3989
3990 return idx;
3991 }
3992
3993 void ixgbe_update_pf_promisc_vlvf(struct ixgbe_adapter *adapter, u32 vid)
3994 {
3995 struct ixgbe_hw *hw = &adapter->hw;
3996 u32 bits, word;
3997 int idx;
3998
3999 idx = ixgbe_find_vlvf_entry(hw, vid);
4000 if (!idx)
4001 return;
4002
4003 /* See if any other pools are set for this VLAN filter
4004 * entry other than the PF.
4005 */
4006 word = idx * 2 + (VMDQ_P(0) / 32);
4007 bits = ~BIT(VMDQ_P(0) % 32);
4008 bits &= IXGBE_READ_REG(hw, IXGBE_VLVFB(word));
4009
4010 /* Disable the filter so this falls into the default pool. */
4011 if (!bits && !IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1))) {
4012 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
4013 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), 0);
4014 IXGBE_WRITE_REG(hw, IXGBE_VLVF(idx), 0);
4015 }
4016 }
4017
4018 static int ixgbe_vlan_rx_kill_vid(struct net_device *netdev,
4019 __be16 proto, u16 vid)
4020 {
4021 struct ixgbe_adapter *adapter = netdev_priv(netdev);
4022 struct ixgbe_hw *hw = &adapter->hw;
4023
4024 /* remove VID from filter table */
4025 if (vid && !(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
4026 hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), false, true);
4027
4028 clear_bit(vid, adapter->active_vlans);
4029
4030 return 0;
4031 }
4032
4033 /**
4034 * ixgbe_vlan_strip_disable - helper to disable hw vlan stripping
4035 * @adapter: driver data
4036 */
4037 static void ixgbe_vlan_strip_disable(struct ixgbe_adapter *adapter)
4038 {
4039 struct ixgbe_hw *hw = &adapter->hw;
4040 u32 vlnctrl;
4041 int i, j;
4042
4043 switch (hw->mac.type) {
4044 case ixgbe_mac_82598EB:
4045 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
4046 vlnctrl &= ~IXGBE_VLNCTRL_VME;
4047 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
4048 break;
4049 case ixgbe_mac_82599EB:
4050 case ixgbe_mac_X540:
4051 case ixgbe_mac_X550:
4052 case ixgbe_mac_X550EM_x:
4053 case ixgbe_mac_x550em_a:
4054 for (i = 0; i < adapter->num_rx_queues; i++) {
4055 struct ixgbe_ring *ring = adapter->rx_ring[i];
4056
4057 if (ring->l2_accel_priv)
4058 continue;
4059 j = ring->reg_idx;
4060 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
4061 vlnctrl &= ~IXGBE_RXDCTL_VME;
4062 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl);
4063 }
4064 break;
4065 default:
4066 break;
4067 }
4068 }
4069
4070 /**
4071 * ixgbe_vlan_strip_enable - helper to enable hw vlan stripping
4072 * @adapter: driver data
4073 */
4074 static void ixgbe_vlan_strip_enable(struct ixgbe_adapter *adapter)
4075 {
4076 struct ixgbe_hw *hw = &adapter->hw;
4077 u32 vlnctrl;
4078 int i, j;
4079
4080 switch (hw->mac.type) {
4081 case ixgbe_mac_82598EB:
4082 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
4083 vlnctrl |= IXGBE_VLNCTRL_VME;
4084 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
4085 break;
4086 case ixgbe_mac_82599EB:
4087 case ixgbe_mac_X540:
4088 case ixgbe_mac_X550:
4089 case ixgbe_mac_X550EM_x:
4090 case ixgbe_mac_x550em_a:
4091 for (i = 0; i < adapter->num_rx_queues; i++) {
4092 struct ixgbe_ring *ring = adapter->rx_ring[i];
4093
4094 if (ring->l2_accel_priv)
4095 continue;
4096 j = ring->reg_idx;
4097 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j));
4098 vlnctrl |= IXGBE_RXDCTL_VME;
4099 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl);
4100 }
4101 break;
4102 default:
4103 break;
4104 }
4105 }
4106
4107 static void ixgbe_vlan_promisc_enable(struct ixgbe_adapter *adapter)
4108 {
4109 struct ixgbe_hw *hw = &adapter->hw;
4110 u32 vlnctrl, i;
4111
4112 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
4113
4114 if (adapter->flags & IXGBE_FLAG_VMDQ_ENABLED) {
4115 /* For VMDq and SR-IOV we must leave VLAN filtering enabled */
4116 vlnctrl |= IXGBE_VLNCTRL_VFE;
4117 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
4118 } else {
4119 vlnctrl &= ~IXGBE_VLNCTRL_VFE;
4120 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
4121 return;
4122 }
4123
4124 /* Nothing to do for 82598 */
4125 if (hw->mac.type == ixgbe_mac_82598EB)
4126 return;
4127
4128 /* We are already in VLAN promisc, nothing to do */
4129 if (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)
4130 return;
4131
4132 /* Set flag so we don't redo unnecessary work */
4133 adapter->flags2 |= IXGBE_FLAG2_VLAN_PROMISC;
4134
4135 /* Add PF to all active pools */
4136 for (i = IXGBE_VLVF_ENTRIES; --i;) {
4137 u32 reg_offset = IXGBE_VLVFB(i * 2 + VMDQ_P(0) / 32);
4138 u32 vlvfb = IXGBE_READ_REG(hw, reg_offset);
4139
4140 vlvfb |= BIT(VMDQ_P(0) % 32);
4141 IXGBE_WRITE_REG(hw, reg_offset, vlvfb);
4142 }
4143
4144 /* Set all bits in the VLAN filter table array */
4145 for (i = hw->mac.vft_size; i--;)
4146 IXGBE_WRITE_REG(hw, IXGBE_VFTA(i), ~0U);
4147 }
4148
4149 #define VFTA_BLOCK_SIZE 8
4150 static void ixgbe_scrub_vfta(struct ixgbe_adapter *adapter, u32 vfta_offset)
4151 {
4152 struct ixgbe_hw *hw = &adapter->hw;
4153 u32 vfta[VFTA_BLOCK_SIZE] = { 0 };
4154 u32 vid_start = vfta_offset * 32;
4155 u32 vid_end = vid_start + (VFTA_BLOCK_SIZE * 32);
4156 u32 i, vid, word, bits;
4157
4158 for (i = IXGBE_VLVF_ENTRIES; --i;) {
4159 u32 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i));
4160
4161 /* pull VLAN ID from VLVF */
4162 vid = vlvf & VLAN_VID_MASK;
4163
4164 /* only concern outselves with a certain range */
4165 if (vid < vid_start || vid >= vid_end)
4166 continue;
4167
4168 if (vlvf) {
4169 /* record VLAN ID in VFTA */
4170 vfta[(vid - vid_start) / 32] |= BIT(vid % 32);
4171
4172 /* if PF is part of this then continue */
4173 if (test_bit(vid, adapter->active_vlans))
4174 continue;
4175 }
4176
4177 /* remove PF from the pool */
4178 word = i * 2 + VMDQ_P(0) / 32;
4179 bits = ~BIT(VMDQ_P(0) % 32);
4180 bits &= IXGBE_READ_REG(hw, IXGBE_VLVFB(word));
4181 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), bits);
4182 }
4183
4184 /* extract values from active_vlans and write back to VFTA */
4185 for (i = VFTA_BLOCK_SIZE; i--;) {
4186 vid = (vfta_offset + i) * 32;
4187 word = vid / BITS_PER_LONG;
4188 bits = vid % BITS_PER_LONG;
4189
4190 vfta[i] |= adapter->active_vlans[word] >> bits;
4191
4192 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vfta_offset + i), vfta[i]);
4193 }
4194 }
4195
4196 static void ixgbe_vlan_promisc_disable(struct ixgbe_adapter *adapter)
4197 {
4198 struct ixgbe_hw *hw = &adapter->hw;
4199 u32 vlnctrl, i;
4200
4201 /* Set VLAN filtering to enabled */
4202 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
4203 vlnctrl |= IXGBE_VLNCTRL_VFE;
4204 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
4205
4206 if (!(adapter->flags & IXGBE_FLAG_VMDQ_ENABLED) ||
4207 hw->mac.type == ixgbe_mac_82598EB)
4208 return;
4209
4210 /* We are not in VLAN promisc, nothing to do */
4211 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))
4212 return;
4213
4214 /* Set flag so we don't redo unnecessary work */
4215 adapter->flags2 &= ~IXGBE_FLAG2_VLAN_PROMISC;
4216
4217 for (i = 0; i < hw->mac.vft_size; i += VFTA_BLOCK_SIZE)
4218 ixgbe_scrub_vfta(adapter, i);
4219 }
4220
4221 static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter)
4222 {
4223 u16 vid = 1;
4224
4225 ixgbe_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), 0);
4226
4227 for_each_set_bit_from(vid, adapter->active_vlans, VLAN_N_VID)
4228 ixgbe_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid);
4229 }
4230
4231 /**
4232 * ixgbe_write_mc_addr_list - write multicast addresses to MTA
4233 * @netdev: network interface device structure
4234 *
4235 * Writes multicast address list to the MTA hash table.
4236 * Returns: -ENOMEM on failure
4237 * 0 on no addresses written
4238 * X on writing X addresses to MTA
4239 **/
4240 static int ixgbe_write_mc_addr_list(struct net_device *netdev)
4241 {
4242 struct ixgbe_adapter *adapter = netdev_priv(netdev);
4243 struct ixgbe_hw *hw = &adapter->hw;
4244
4245 if (!netif_running(netdev))
4246 return 0;
4247
4248 if (hw->mac.ops.update_mc_addr_list)
4249 hw->mac.ops.update_mc_addr_list(hw, netdev);
4250 else
4251 return -ENOMEM;
4252
4253 #ifdef CONFIG_PCI_IOV
4254 ixgbe_restore_vf_multicasts(adapter);
4255 #endif
4256
4257 return netdev_mc_count(netdev);
4258 }
4259
4260 #ifdef CONFIG_PCI_IOV
4261 void ixgbe_full_sync_mac_table(struct ixgbe_adapter *adapter)
4262 {
4263 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0];
4264 struct ixgbe_hw *hw = &adapter->hw;
4265 int i;
4266
4267 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) {
4268 mac_table->state &= ~IXGBE_MAC_STATE_MODIFIED;
4269
4270 if (mac_table->state & IXGBE_MAC_STATE_IN_USE)
4271 hw->mac.ops.set_rar(hw, i,
4272 mac_table->addr,
4273 mac_table->pool,
4274 IXGBE_RAH_AV);
4275 else
4276 hw->mac.ops.clear_rar(hw, i);
4277 }
4278 }
4279
4280 #endif
4281 static void ixgbe_sync_mac_table(struct ixgbe_adapter *adapter)
4282 {
4283 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0];
4284 struct ixgbe_hw *hw = &adapter->hw;
4285 int i;
4286
4287 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) {
4288 if (!(mac_table->state & IXGBE_MAC_STATE_MODIFIED))
4289 continue;
4290
4291 mac_table->state &= ~IXGBE_MAC_STATE_MODIFIED;
4292
4293 if (mac_table->state & IXGBE_MAC_STATE_IN_USE)
4294 hw->mac.ops.set_rar(hw, i,
4295 mac_table->addr,
4296 mac_table->pool,
4297 IXGBE_RAH_AV);
4298 else
4299 hw->mac.ops.clear_rar(hw, i);
4300 }
4301 }
4302
4303 static void ixgbe_flush_sw_mac_table(struct ixgbe_adapter *adapter)
4304 {
4305 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0];
4306 struct ixgbe_hw *hw = &adapter->hw;
4307 int i;
4308
4309 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) {
4310 mac_table->state |= IXGBE_MAC_STATE_MODIFIED;
4311 mac_table->state &= ~IXGBE_MAC_STATE_IN_USE;
4312 }
4313
4314 ixgbe_sync_mac_table(adapter);
4315 }
4316
4317 static int ixgbe_available_rars(struct ixgbe_adapter *adapter, u16 pool)
4318 {
4319 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0];
4320 struct ixgbe_hw *hw = &adapter->hw;
4321 int i, count = 0;
4322
4323 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) {
4324 /* do not count default RAR as available */
4325 if (mac_table->state & IXGBE_MAC_STATE_DEFAULT)
4326 continue;
4327
4328 /* only count unused and addresses that belong to us */
4329 if (mac_table->state & IXGBE_MAC_STATE_IN_USE) {
4330 if (mac_table->pool != pool)
4331 continue;
4332 }
4333
4334 count++;
4335 }
4336
4337 return count;
4338 }
4339
4340 /* this function destroys the first RAR entry */
4341 static void ixgbe_mac_set_default_filter(struct ixgbe_adapter *adapter)
4342 {
4343 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0];
4344 struct ixgbe_hw *hw = &adapter->hw;
4345
4346 memcpy(&mac_table->addr, hw->mac.addr, ETH_ALEN);
4347 mac_table->pool = VMDQ_P(0);
4348
4349 mac_table->state = IXGBE_MAC_STATE_DEFAULT | IXGBE_MAC_STATE_IN_USE;
4350
4351 hw->mac.ops.set_rar(hw, 0, mac_table->addr, mac_table->pool,
4352 IXGBE_RAH_AV);
4353 }
4354
4355 int ixgbe_add_mac_filter(struct ixgbe_adapter *adapter,
4356 const u8 *addr, u16 pool)
4357 {
4358 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0];
4359 struct ixgbe_hw *hw = &adapter->hw;
4360 int i;
4361
4362 if (is_zero_ether_addr(addr))
4363 return -EINVAL;
4364
4365 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) {
4366 if (mac_table->state & IXGBE_MAC_STATE_IN_USE)
4367 continue;
4368
4369 ether_addr_copy(mac_table->addr, addr);
4370 mac_table->pool = pool;
4371
4372 mac_table->state |= IXGBE_MAC_STATE_MODIFIED |
4373 IXGBE_MAC_STATE_IN_USE;
4374
4375 ixgbe_sync_mac_table(adapter);
4376
4377 return i;
4378 }
4379
4380 return -ENOMEM;
4381 }
4382
4383 int ixgbe_del_mac_filter(struct ixgbe_adapter *adapter,
4384 const u8 *addr, u16 pool)
4385 {
4386 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0];
4387 struct ixgbe_hw *hw = &adapter->hw;
4388 int i;
4389
4390 if (is_zero_ether_addr(addr))
4391 return -EINVAL;
4392
4393 /* search table for addr, if found clear IN_USE flag and sync */
4394 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) {
4395 /* we can only delete an entry if it is in use */
4396 if (!(mac_table->state & IXGBE_MAC_STATE_IN_USE))
4397 continue;
4398 /* we only care about entries that belong to the given pool */
4399 if (mac_table->pool != pool)
4400 continue;
4401 /* we only care about a specific MAC address */
4402 if (!ether_addr_equal(addr, mac_table->addr))
4403 continue;
4404
4405 mac_table->state |= IXGBE_MAC_STATE_MODIFIED;
4406 mac_table->state &= ~IXGBE_MAC_STATE_IN_USE;
4407
4408 ixgbe_sync_mac_table(adapter);
4409
4410 return 0;
4411 }
4412
4413 return -ENOMEM;
4414 }
4415 /**
4416 * ixgbe_write_uc_addr_list - write unicast addresses to RAR table
4417 * @netdev: network interface device structure
4418 *
4419 * Writes unicast address list to the RAR table.
4420 * Returns: -ENOMEM on failure/insufficient address space
4421 * 0 on no addresses written
4422 * X on writing X addresses to the RAR table
4423 **/
4424 static int ixgbe_write_uc_addr_list(struct net_device *netdev, int vfn)
4425 {
4426 struct ixgbe_adapter *adapter = netdev_priv(netdev);
4427 int count = 0;
4428
4429 /* return ENOMEM indicating insufficient memory for addresses */
4430 if (netdev_uc_count(netdev) > ixgbe_available_rars(adapter, vfn))
4431 return -ENOMEM;
4432
4433 if (!netdev_uc_empty(netdev)) {
4434 struct netdev_hw_addr *ha;
4435 netdev_for_each_uc_addr(ha, netdev) {
4436 ixgbe_del_mac_filter(adapter, ha->addr, vfn);
4437 ixgbe_add_mac_filter(adapter, ha->addr, vfn);
4438 count++;
4439 }
4440 }
4441 return count;
4442 }
4443
4444 static int ixgbe_uc_sync(struct net_device *netdev, const unsigned char *addr)
4445 {
4446 struct ixgbe_adapter *adapter = netdev_priv(netdev);
4447 int ret;
4448
4449 ret = ixgbe_add_mac_filter(adapter, addr, VMDQ_P(0));
4450
4451 return min_t(int, ret, 0);
4452 }
4453
4454 static int ixgbe_uc_unsync(struct net_device *netdev, const unsigned char *addr)
4455 {
4456 struct ixgbe_adapter *adapter = netdev_priv(netdev);
4457
4458 ixgbe_del_mac_filter(adapter, addr, VMDQ_P(0));
4459
4460 return 0;
4461 }
4462
4463 /**
4464 * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set
4465 * @netdev: network interface device structure
4466 *
4467 * The set_rx_method entry point is called whenever the unicast/multicast
4468 * address list or the network interface flags are updated. This routine is
4469 * responsible for configuring the hardware for proper unicast, multicast and
4470 * promiscuous mode.
4471 **/
4472 void ixgbe_set_rx_mode(struct net_device *netdev)
4473 {
4474 struct ixgbe_adapter *adapter = netdev_priv(netdev);
4475 struct ixgbe_hw *hw = &adapter->hw;
4476 u32 fctrl, vmolr = IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE;
4477 netdev_features_t features = netdev->features;
4478 int count;
4479
4480 /* Check for Promiscuous and All Multicast modes */
4481 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
4482
4483 /* set all bits that we expect to always be set */
4484 fctrl &= ~IXGBE_FCTRL_SBP; /* disable store-bad-packets */
4485 fctrl |= IXGBE_FCTRL_BAM;
4486 fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */
4487 fctrl |= IXGBE_FCTRL_PMCF;
4488
4489 /* clear the bits we are changing the status of */
4490 fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
4491 if (netdev->flags & IFF_PROMISC) {
4492 hw->addr_ctrl.user_set_promisc = true;
4493 fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE);
4494 vmolr |= IXGBE_VMOLR_MPE;
4495 features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
4496 } else {
4497 if (netdev->flags & IFF_ALLMULTI) {
4498 fctrl |= IXGBE_FCTRL_MPE;
4499 vmolr |= IXGBE_VMOLR_MPE;
4500 }
4501 hw->addr_ctrl.user_set_promisc = false;
4502 }
4503
4504 /*
4505 * Write addresses to available RAR registers, if there is not
4506 * sufficient space to store all the addresses then enable
4507 * unicast promiscuous mode
4508 */
4509 if (__dev_uc_sync(netdev, ixgbe_uc_sync, ixgbe_uc_unsync)) {
4510 fctrl |= IXGBE_FCTRL_UPE;
4511 vmolr |= IXGBE_VMOLR_ROPE;
4512 }
4513
4514 /* Write addresses to the MTA, if the attempt fails
4515 * then we should just turn on promiscuous mode so
4516 * that we can at least receive multicast traffic
4517 */
4518 count = ixgbe_write_mc_addr_list(netdev);
4519 if (count < 0) {
4520 fctrl |= IXGBE_FCTRL_MPE;
4521 vmolr |= IXGBE_VMOLR_MPE;
4522 } else if (count) {
4523 vmolr |= IXGBE_VMOLR_ROMPE;
4524 }
4525
4526 if (hw->mac.type != ixgbe_mac_82598EB) {
4527 vmolr |= IXGBE_READ_REG(hw, IXGBE_VMOLR(VMDQ_P(0))) &
4528 ~(IXGBE_VMOLR_MPE | IXGBE_VMOLR_ROMPE |
4529 IXGBE_VMOLR_ROPE);
4530 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(VMDQ_P(0)), vmolr);
4531 }
4532
4533 /* This is useful for sniffing bad packets. */
4534 if (features & NETIF_F_RXALL) {
4535 /* UPE and MPE will be handled by normal PROMISC logic
4536 * in e1000e_set_rx_mode */
4537 fctrl |= (IXGBE_FCTRL_SBP | /* Receive bad packets */
4538 IXGBE_FCTRL_BAM | /* RX All Bcast Pkts */
4539 IXGBE_FCTRL_PMCF); /* RX All MAC Ctrl Pkts */
4540
4541 fctrl &= ~(IXGBE_FCTRL_DPF);
4542 /* NOTE: VLAN filtering is disabled by setting PROMISC */
4543 }
4544
4545 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
4546
4547 if (features & NETIF_F_HW_VLAN_CTAG_RX)
4548 ixgbe_vlan_strip_enable(adapter);
4549 else
4550 ixgbe_vlan_strip_disable(adapter);
4551
4552 if (features & NETIF_F_HW_VLAN_CTAG_FILTER)
4553 ixgbe_vlan_promisc_disable(adapter);
4554 else
4555 ixgbe_vlan_promisc_enable(adapter);
4556 }
4557
4558 static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter)
4559 {
4560 int q_idx;
4561
4562 for (q_idx = 0; q_idx < adapter->num_q_vectors; q_idx++) {
4563 ixgbe_qv_init_lock(adapter->q_vector[q_idx]);
4564 napi_enable(&adapter->q_vector[q_idx]->napi);
4565 }
4566 }
4567
4568 static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter)
4569 {
4570 int q_idx;
4571
4572 for (q_idx = 0; q_idx < adapter->num_q_vectors; q_idx++) {
4573 napi_disable(&adapter->q_vector[q_idx]->napi);
4574 while (!ixgbe_qv_disable(adapter->q_vector[q_idx])) {
4575 pr_info("QV %d locked\n", q_idx);
4576 usleep_range(1000, 20000);
4577 }
4578 }
4579 }
4580
4581 static void ixgbe_clear_udp_tunnel_port(struct ixgbe_adapter *adapter, u32 mask)
4582 {
4583 struct ixgbe_hw *hw = &adapter->hw;
4584 u32 vxlanctrl;
4585
4586 if (!(adapter->flags & (IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE |
4587 IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE)))
4588 return;
4589
4590 vxlanctrl = IXGBE_READ_REG(hw, IXGBE_VXLANCTRL) && ~mask;
4591 IXGBE_WRITE_REG(hw, IXGBE_VXLANCTRL, vxlanctrl);
4592
4593 if (mask & IXGBE_VXLANCTRL_VXLAN_UDPPORT_MASK)
4594 adapter->vxlan_port = 0;
4595
4596 if (mask & IXGBE_VXLANCTRL_GENEVE_UDPPORT_MASK)
4597 adapter->geneve_port = 0;
4598 }
4599
4600 #ifdef CONFIG_IXGBE_DCB
4601 /**
4602 * ixgbe_configure_dcb - Configure DCB hardware
4603 * @adapter: ixgbe adapter struct
4604 *
4605 * This is called by the driver on open to configure the DCB hardware.
4606 * This is also called by the gennetlink interface when reconfiguring
4607 * the DCB state.
4608 */
4609 static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter)
4610 {
4611 struct ixgbe_hw *hw = &adapter->hw;
4612 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
4613
4614 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED)) {
4615 if (hw->mac.type == ixgbe_mac_82598EB)
4616 netif_set_gso_max_size(adapter->netdev, 65536);
4617 return;
4618 }
4619
4620 if (hw->mac.type == ixgbe_mac_82598EB)
4621 netif_set_gso_max_size(adapter->netdev, 32768);
4622
4623 #ifdef IXGBE_FCOE
4624 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
4625 max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
4626 #endif
4627
4628 /* reconfigure the hardware */
4629 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE) {
4630 ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame,
4631 DCB_TX_CONFIG);
4632 ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame,
4633 DCB_RX_CONFIG);
4634 ixgbe_dcb_hw_config(hw, &adapter->dcb_cfg);
4635 } else if (adapter->ixgbe_ieee_ets && adapter->ixgbe_ieee_pfc) {
4636 ixgbe_dcb_hw_ets(&adapter->hw,
4637 adapter->ixgbe_ieee_ets,
4638 max_frame);
4639 ixgbe_dcb_hw_pfc_config(&adapter->hw,
4640 adapter->ixgbe_ieee_pfc->pfc_en,
4641 adapter->ixgbe_ieee_ets->prio_tc);
4642 }
4643
4644 /* Enable RSS Hash per TC */
4645 if (hw->mac.type != ixgbe_mac_82598EB) {
4646 u32 msb = 0;
4647 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices - 1;
4648
4649 while (rss_i) {
4650 msb++;
4651 rss_i >>= 1;
4652 }
4653
4654 /* write msb to all 8 TCs in one write */
4655 IXGBE_WRITE_REG(hw, IXGBE_RQTC, msb * 0x11111111);
4656 }
4657 }
4658 #endif
4659
4660 /* Additional bittime to account for IXGBE framing */
4661 #define IXGBE_ETH_FRAMING 20
4662
4663 /**
4664 * ixgbe_hpbthresh - calculate high water mark for flow control
4665 *
4666 * @adapter: board private structure to calculate for
4667 * @pb: packet buffer to calculate
4668 */
4669 static int ixgbe_hpbthresh(struct ixgbe_adapter *adapter, int pb)
4670 {
4671 struct ixgbe_hw *hw = &adapter->hw;
4672 struct net_device *dev = adapter->netdev;
4673 int link, tc, kb, marker;
4674 u32 dv_id, rx_pba;
4675
4676 /* Calculate max LAN frame size */
4677 tc = link = dev->mtu + ETH_HLEN + ETH_FCS_LEN + IXGBE_ETH_FRAMING;
4678
4679 #ifdef IXGBE_FCOE
4680 /* FCoE traffic class uses FCOE jumbo frames */
4681 if ((dev->features & NETIF_F_FCOE_MTU) &&
4682 (tc < IXGBE_FCOE_JUMBO_FRAME_SIZE) &&
4683 (pb == ixgbe_fcoe_get_tc(adapter)))
4684 tc = IXGBE_FCOE_JUMBO_FRAME_SIZE;
4685 #endif
4686
4687 /* Calculate delay value for device */
4688 switch (hw->mac.type) {
4689 case ixgbe_mac_X540:
4690 case ixgbe_mac_X550:
4691 case ixgbe_mac_X550EM_x:
4692 case ixgbe_mac_x550em_a:
4693 dv_id = IXGBE_DV_X540(link, tc);
4694 break;
4695 default:
4696 dv_id = IXGBE_DV(link, tc);
4697 break;
4698 }
4699
4700 /* Loopback switch introduces additional latency */
4701 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
4702 dv_id += IXGBE_B2BT(tc);
4703
4704 /* Delay value is calculated in bit times convert to KB */
4705 kb = IXGBE_BT2KB(dv_id);
4706 rx_pba = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(pb)) >> 10;
4707
4708 marker = rx_pba - kb;
4709
4710 /* It is possible that the packet buffer is not large enough
4711 * to provide required headroom. In this case throw an error
4712 * to user and a do the best we can.
4713 */
4714 if (marker < 0) {
4715 e_warn(drv, "Packet Buffer(%i) can not provide enough"
4716 "headroom to support flow control."
4717 "Decrease MTU or number of traffic classes\n", pb);
4718 marker = tc + 1;
4719 }
4720
4721 return marker;
4722 }
4723
4724 /**
4725 * ixgbe_lpbthresh - calculate low water mark for for flow control
4726 *
4727 * @adapter: board private structure to calculate for
4728 * @pb: packet buffer to calculate
4729 */
4730 static int ixgbe_lpbthresh(struct ixgbe_adapter *adapter, int pb)
4731 {
4732 struct ixgbe_hw *hw = &adapter->hw;
4733 struct net_device *dev = adapter->netdev;
4734 int tc;
4735 u32 dv_id;
4736
4737 /* Calculate max LAN frame size */
4738 tc = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
4739
4740 #ifdef IXGBE_FCOE
4741 /* FCoE traffic class uses FCOE jumbo frames */
4742 if ((dev->features & NETIF_F_FCOE_MTU) &&
4743 (tc < IXGBE_FCOE_JUMBO_FRAME_SIZE) &&
4744 (pb == netdev_get_prio_tc_map(dev, adapter->fcoe.up)))
4745 tc = IXGBE_FCOE_JUMBO_FRAME_SIZE;
4746 #endif
4747
4748 /* Calculate delay value for device */
4749 switch (hw->mac.type) {
4750 case ixgbe_mac_X540:
4751 case ixgbe_mac_X550:
4752 case ixgbe_mac_X550EM_x:
4753 case ixgbe_mac_x550em_a:
4754 dv_id = IXGBE_LOW_DV_X540(tc);
4755 break;
4756 default:
4757 dv_id = IXGBE_LOW_DV(tc);
4758 break;
4759 }
4760
4761 /* Delay value is calculated in bit times convert to KB */
4762 return IXGBE_BT2KB(dv_id);
4763 }
4764
4765 /*
4766 * ixgbe_pbthresh_setup - calculate and setup high low water marks
4767 */
4768 static void ixgbe_pbthresh_setup(struct ixgbe_adapter *adapter)
4769 {
4770 struct ixgbe_hw *hw = &adapter->hw;
4771 int num_tc = netdev_get_num_tc(adapter->netdev);
4772 int i;
4773
4774 if (!num_tc)
4775 num_tc = 1;
4776
4777 for (i = 0; i < num_tc; i++) {
4778 hw->fc.high_water[i] = ixgbe_hpbthresh(adapter, i);
4779 hw->fc.low_water[i] = ixgbe_lpbthresh(adapter, i);
4780
4781 /* Low water marks must not be larger than high water marks */
4782 if (hw->fc.low_water[i] > hw->fc.high_water[i])
4783 hw->fc.low_water[i] = 0;
4784 }
4785
4786 for (; i < MAX_TRAFFIC_CLASS; i++)
4787 hw->fc.high_water[i] = 0;
4788 }
4789
4790 static void ixgbe_configure_pb(struct ixgbe_adapter *adapter)
4791 {
4792 struct ixgbe_hw *hw = &adapter->hw;
4793 int hdrm;
4794 u8 tc = netdev_get_num_tc(adapter->netdev);
4795
4796 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE ||
4797 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
4798 hdrm = 32 << adapter->fdir_pballoc;
4799 else
4800 hdrm = 0;
4801
4802 hw->mac.ops.set_rxpba(hw, tc, hdrm, PBA_STRATEGY_EQUAL);
4803 ixgbe_pbthresh_setup(adapter);
4804 }
4805
4806 static void ixgbe_fdir_filter_restore(struct ixgbe_adapter *adapter)
4807 {
4808 struct ixgbe_hw *hw = &adapter->hw;
4809 struct hlist_node *node2;
4810 struct ixgbe_fdir_filter *filter;
4811
4812 spin_lock(&adapter->fdir_perfect_lock);
4813
4814 if (!hlist_empty(&adapter->fdir_filter_list))
4815 ixgbe_fdir_set_input_mask_82599(hw, &adapter->fdir_mask);
4816
4817 hlist_for_each_entry_safe(filter, node2,
4818 &adapter->fdir_filter_list, fdir_node) {
4819 ixgbe_fdir_write_perfect_filter_82599(hw,
4820 &filter->filter,
4821 filter->sw_idx,
4822 (filter->action == IXGBE_FDIR_DROP_QUEUE) ?
4823 IXGBE_FDIR_DROP_QUEUE :
4824 adapter->rx_ring[filter->action]->reg_idx);
4825 }
4826
4827 spin_unlock(&adapter->fdir_perfect_lock);
4828 }
4829
4830 static void ixgbe_macvlan_set_rx_mode(struct net_device *dev, unsigned int pool,
4831 struct ixgbe_adapter *adapter)
4832 {
4833 struct ixgbe_hw *hw = &adapter->hw;
4834 u32 vmolr;
4835
4836 /* No unicast promiscuous support for VMDQ devices. */
4837 vmolr = IXGBE_READ_REG(hw, IXGBE_VMOLR(pool));
4838 vmolr |= (IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE);
4839
4840 /* clear the affected bit */
4841 vmolr &= ~IXGBE_VMOLR_MPE;
4842
4843 if (dev->flags & IFF_ALLMULTI) {
4844 vmolr |= IXGBE_VMOLR_MPE;
4845 } else {
4846 vmolr |= IXGBE_VMOLR_ROMPE;
4847 hw->mac.ops.update_mc_addr_list(hw, dev);
4848 }
4849 ixgbe_write_uc_addr_list(adapter->netdev, pool);
4850 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(pool), vmolr);
4851 }
4852
4853 static void ixgbe_fwd_psrtype(struct ixgbe_fwd_adapter *vadapter)
4854 {
4855 struct ixgbe_adapter *adapter = vadapter->real_adapter;
4856 int rss_i = adapter->num_rx_queues_per_pool;
4857 struct ixgbe_hw *hw = &adapter->hw;
4858 u16 pool = vadapter->pool;
4859 u32 psrtype = IXGBE_PSRTYPE_TCPHDR |
4860 IXGBE_PSRTYPE_UDPHDR |
4861 IXGBE_PSRTYPE_IPV4HDR |
4862 IXGBE_PSRTYPE_L2HDR |
4863 IXGBE_PSRTYPE_IPV6HDR;
4864
4865 if (hw->mac.type == ixgbe_mac_82598EB)
4866 return;
4867
4868 if (rss_i > 3)
4869 psrtype |= 2u << 29;
4870 else if (rss_i > 1)
4871 psrtype |= 1u << 29;
4872
4873 IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(VMDQ_P(pool)), psrtype);
4874 }
4875
4876 /**
4877 * ixgbe_clean_rx_ring - Free Rx Buffers per Queue
4878 * @rx_ring: ring to free buffers from
4879 **/
4880 static void ixgbe_clean_rx_ring(struct ixgbe_ring *rx_ring)
4881 {
4882 struct device *dev = rx_ring->dev;
4883 unsigned long size;
4884 u16 i;
4885
4886 /* ring already cleared, nothing to do */
4887 if (!rx_ring->rx_buffer_info)
4888 return;
4889
4890 /* Free all the Rx ring sk_buffs */
4891 for (i = 0; i < rx_ring->count; i++) {
4892 struct ixgbe_rx_buffer *rx_buffer = &rx_ring->rx_buffer_info[i];
4893
4894 if (rx_buffer->skb) {
4895 struct sk_buff *skb = rx_buffer->skb;
4896 if (IXGBE_CB(skb)->page_released)
4897 dma_unmap_page(dev,
4898 IXGBE_CB(skb)->dma,
4899 ixgbe_rx_bufsz(rx_ring),
4900 DMA_FROM_DEVICE);
4901 dev_kfree_skb(skb);
4902 rx_buffer->skb = NULL;
4903 }
4904
4905 if (!rx_buffer->page)
4906 continue;
4907
4908 dma_unmap_page(dev, rx_buffer->dma,
4909 ixgbe_rx_pg_size(rx_ring), DMA_FROM_DEVICE);
4910 __free_pages(rx_buffer->page, ixgbe_rx_pg_order(rx_ring));
4911
4912 rx_buffer->page = NULL;
4913 }
4914
4915 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
4916 memset(rx_ring->rx_buffer_info, 0, size);
4917
4918 /* Zero out the descriptor ring */
4919 memset(rx_ring->desc, 0, rx_ring->size);
4920
4921 rx_ring->next_to_alloc = 0;
4922 rx_ring->next_to_clean = 0;
4923 rx_ring->next_to_use = 0;
4924 }
4925
4926 static void ixgbe_disable_fwd_ring(struct ixgbe_fwd_adapter *vadapter,
4927 struct ixgbe_ring *rx_ring)
4928 {
4929 struct ixgbe_adapter *adapter = vadapter->real_adapter;
4930 int index = rx_ring->queue_index + vadapter->rx_base_queue;
4931
4932 /* shutdown specific queue receive and wait for dma to settle */
4933 ixgbe_disable_rx_queue(adapter, rx_ring);
4934 usleep_range(10000, 20000);
4935 ixgbe_irq_disable_queues(adapter, BIT_ULL(index));
4936 ixgbe_clean_rx_ring(rx_ring);
4937 rx_ring->l2_accel_priv = NULL;
4938 }
4939
4940 static int ixgbe_fwd_ring_down(struct net_device *vdev,
4941 struct ixgbe_fwd_adapter *accel)
4942 {
4943 struct ixgbe_adapter *adapter = accel->real_adapter;
4944 unsigned int rxbase = accel->rx_base_queue;
4945 unsigned int txbase = accel->tx_base_queue;
4946 int i;
4947
4948 netif_tx_stop_all_queues(vdev);
4949
4950 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) {
4951 ixgbe_disable_fwd_ring(accel, adapter->rx_ring[rxbase + i]);
4952 adapter->rx_ring[rxbase + i]->netdev = adapter->netdev;
4953 }
4954
4955 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) {
4956 adapter->tx_ring[txbase + i]->l2_accel_priv = NULL;
4957 adapter->tx_ring[txbase + i]->netdev = adapter->netdev;
4958 }
4959
4960
4961 return 0;
4962 }
4963
4964 static int ixgbe_fwd_ring_up(struct net_device *vdev,
4965 struct ixgbe_fwd_adapter *accel)
4966 {
4967 struct ixgbe_adapter *adapter = accel->real_adapter;
4968 unsigned int rxbase, txbase, queues;
4969 int i, baseq, err = 0;
4970
4971 if (!test_bit(accel->pool, &adapter->fwd_bitmask))
4972 return 0;
4973
4974 baseq = accel->pool * adapter->num_rx_queues_per_pool;
4975 netdev_dbg(vdev, "pool %i:%i queues %i:%i VSI bitmask %lx\n",
4976 accel->pool, adapter->num_rx_pools,
4977 baseq, baseq + adapter->num_rx_queues_per_pool,
4978 adapter->fwd_bitmask);
4979
4980 accel->netdev = vdev;
4981 accel->rx_base_queue = rxbase = baseq;
4982 accel->tx_base_queue = txbase = baseq;
4983
4984 for (i = 0; i < adapter->num_rx_queues_per_pool; i++)
4985 ixgbe_disable_fwd_ring(accel, adapter->rx_ring[rxbase + i]);
4986
4987 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) {
4988 adapter->rx_ring[rxbase + i]->netdev = vdev;
4989 adapter->rx_ring[rxbase + i]->l2_accel_priv = accel;
4990 ixgbe_configure_rx_ring(adapter, adapter->rx_ring[rxbase + i]);
4991 }
4992
4993 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) {
4994 adapter->tx_ring[txbase + i]->netdev = vdev;
4995 adapter->tx_ring[txbase + i]->l2_accel_priv = accel;
4996 }
4997
4998 queues = min_t(unsigned int,
4999 adapter->num_rx_queues_per_pool, vdev->num_tx_queues);
5000 err = netif_set_real_num_tx_queues(vdev, queues);
5001 if (err)
5002 goto fwd_queue_err;
5003
5004 err = netif_set_real_num_rx_queues(vdev, queues);
5005 if (err)
5006 goto fwd_queue_err;
5007
5008 if (is_valid_ether_addr(vdev->dev_addr))
5009 ixgbe_add_mac_filter(adapter, vdev->dev_addr, accel->pool);
5010
5011 ixgbe_fwd_psrtype(accel);
5012 ixgbe_macvlan_set_rx_mode(vdev, accel->pool, adapter);
5013 return err;
5014 fwd_queue_err:
5015 ixgbe_fwd_ring_down(vdev, accel);
5016 return err;
5017 }
5018
5019 static int ixgbe_upper_dev_walk(struct net_device *upper, void *data)
5020 {
5021 if (netif_is_macvlan(upper)) {
5022 struct macvlan_dev *dfwd = netdev_priv(upper);
5023 struct ixgbe_fwd_adapter *vadapter = dfwd->fwd_priv;
5024
5025 if (dfwd->fwd_priv)
5026 ixgbe_fwd_ring_up(upper, vadapter);
5027 }
5028
5029 return 0;
5030 }
5031
5032 static void ixgbe_configure_dfwd(struct ixgbe_adapter *adapter)
5033 {
5034 netdev_walk_all_upper_dev_rcu(adapter->netdev,
5035 ixgbe_upper_dev_walk, NULL);
5036 }
5037
5038 static void ixgbe_configure(struct ixgbe_adapter *adapter)
5039 {
5040 struct ixgbe_hw *hw = &adapter->hw;
5041
5042 ixgbe_configure_pb(adapter);
5043 #ifdef CONFIG_IXGBE_DCB
5044 ixgbe_configure_dcb(adapter);
5045 #endif
5046 /*
5047 * We must restore virtualization before VLANs or else
5048 * the VLVF registers will not be populated
5049 */
5050 ixgbe_configure_virtualization(adapter);
5051
5052 ixgbe_set_rx_mode(adapter->netdev);
5053 ixgbe_restore_vlan(adapter);
5054
5055 switch (hw->mac.type) {
5056 case ixgbe_mac_82599EB:
5057 case ixgbe_mac_X540:
5058 hw->mac.ops.disable_rx_buff(hw);
5059 break;
5060 default:
5061 break;
5062 }
5063
5064 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) {
5065 ixgbe_init_fdir_signature_82599(&adapter->hw,
5066 adapter->fdir_pballoc);
5067 } else if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) {
5068 ixgbe_init_fdir_perfect_82599(&adapter->hw,
5069 adapter->fdir_pballoc);
5070 ixgbe_fdir_filter_restore(adapter);
5071 }
5072
5073 switch (hw->mac.type) {
5074 case ixgbe_mac_82599EB:
5075 case ixgbe_mac_X540:
5076 hw->mac.ops.enable_rx_buff(hw);
5077 break;
5078 default:
5079 break;
5080 }
5081
5082 #ifdef CONFIG_IXGBE_DCA
5083 /* configure DCA */
5084 if (adapter->flags & IXGBE_FLAG_DCA_CAPABLE)
5085 ixgbe_setup_dca(adapter);
5086 #endif /* CONFIG_IXGBE_DCA */
5087
5088 #ifdef IXGBE_FCOE
5089 /* configure FCoE L2 filters, redirection table, and Rx control */
5090 ixgbe_configure_fcoe(adapter);
5091
5092 #endif /* IXGBE_FCOE */
5093 ixgbe_configure_tx(adapter);
5094 ixgbe_configure_rx(adapter);
5095 ixgbe_configure_dfwd(adapter);
5096 }
5097
5098 /**
5099 * ixgbe_sfp_link_config - set up SFP+ link
5100 * @adapter: pointer to private adapter struct
5101 **/
5102 static void ixgbe_sfp_link_config(struct ixgbe_adapter *adapter)
5103 {
5104 /*
5105 * We are assuming the worst case scenario here, and that
5106 * is that an SFP was inserted/removed after the reset
5107 * but before SFP detection was enabled. As such the best
5108 * solution is to just start searching as soon as we start
5109 */
5110 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
5111 adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP;
5112
5113 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET;
5114 adapter->sfp_poll_time = 0;
5115 }
5116
5117 /**
5118 * ixgbe_non_sfp_link_config - set up non-SFP+ link
5119 * @hw: pointer to private hardware struct
5120 *
5121 * Returns 0 on success, negative on failure
5122 **/
5123 static int ixgbe_non_sfp_link_config(struct ixgbe_hw *hw)
5124 {
5125 u32 speed;
5126 bool autoneg, link_up = false;
5127 int ret = IXGBE_ERR_LINK_SETUP;
5128
5129 if (hw->mac.ops.check_link)
5130 ret = hw->mac.ops.check_link(hw, &speed, &link_up, false);
5131
5132 if (ret)
5133 return ret;
5134
5135 speed = hw->phy.autoneg_advertised;
5136 if ((!speed) && (hw->mac.ops.get_link_capabilities))
5137 ret = hw->mac.ops.get_link_capabilities(hw, &speed,
5138 &autoneg);
5139 if (ret)
5140 return ret;
5141
5142 if (hw->mac.ops.setup_link)
5143 ret = hw->mac.ops.setup_link(hw, speed, link_up);
5144
5145 return ret;
5146 }
5147
5148 static void ixgbe_setup_gpie(struct ixgbe_adapter *adapter)
5149 {
5150 struct ixgbe_hw *hw = &adapter->hw;
5151 u32 gpie = 0;
5152
5153 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) {
5154 gpie = IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_PBA_SUPPORT |
5155 IXGBE_GPIE_OCD;
5156 gpie |= IXGBE_GPIE_EIAME;
5157 /*
5158 * use EIAM to auto-mask when MSI-X interrupt is asserted
5159 * this saves a register write for every interrupt
5160 */
5161 switch (hw->mac.type) {
5162 case ixgbe_mac_82598EB:
5163 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
5164 break;
5165 case ixgbe_mac_82599EB:
5166 case ixgbe_mac_X540:
5167 case ixgbe_mac_X550:
5168 case ixgbe_mac_X550EM_x:
5169 case ixgbe_mac_x550em_a:
5170 default:
5171 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(0), 0xFFFFFFFF);
5172 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(1), 0xFFFFFFFF);
5173 break;
5174 }
5175 } else {
5176 /* legacy interrupts, use EIAM to auto-mask when reading EICR,
5177 * specifically only auto mask tx and rx interrupts */
5178 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE);
5179 }
5180
5181 /* XXX: to interrupt immediately for EICS writes, enable this */
5182 /* gpie |= IXGBE_GPIE_EIMEN; */
5183
5184 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
5185 gpie &= ~IXGBE_GPIE_VTMODE_MASK;
5186
5187 switch (adapter->ring_feature[RING_F_VMDQ].mask) {
5188 case IXGBE_82599_VMDQ_8Q_MASK:
5189 gpie |= IXGBE_GPIE_VTMODE_16;
5190 break;
5191 case IXGBE_82599_VMDQ_4Q_MASK:
5192 gpie |= IXGBE_GPIE_VTMODE_32;
5193 break;
5194 default:
5195 gpie |= IXGBE_GPIE_VTMODE_64;
5196 break;
5197 }
5198 }
5199
5200 /* Enable Thermal over heat sensor interrupt */
5201 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) {
5202 switch (adapter->hw.mac.type) {
5203 case ixgbe_mac_82599EB:
5204 gpie |= IXGBE_SDP0_GPIEN_8259X;
5205 break;
5206 default:
5207 break;
5208 }
5209 }
5210
5211 /* Enable fan failure interrupt */
5212 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE)
5213 gpie |= IXGBE_SDP1_GPIEN(hw);
5214
5215 switch (hw->mac.type) {
5216 case ixgbe_mac_82599EB:
5217 gpie |= IXGBE_SDP1_GPIEN_8259X | IXGBE_SDP2_GPIEN_8259X;
5218 break;
5219 case ixgbe_mac_X550EM_x:
5220 case ixgbe_mac_x550em_a:
5221 gpie |= IXGBE_SDP0_GPIEN_X540;
5222 break;
5223 default:
5224 break;
5225 }
5226
5227 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie);
5228 }
5229
5230 static void ixgbe_up_complete(struct ixgbe_adapter *adapter)
5231 {
5232 struct ixgbe_hw *hw = &adapter->hw;
5233 int err;
5234 u32 ctrl_ext;
5235
5236 ixgbe_get_hw_control(adapter);
5237 ixgbe_setup_gpie(adapter);
5238
5239 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED)
5240 ixgbe_configure_msix(adapter);
5241 else
5242 ixgbe_configure_msi_and_legacy(adapter);
5243
5244 /* enable the optics for 82599 SFP+ fiber */
5245 if (hw->mac.ops.enable_tx_laser)
5246 hw->mac.ops.enable_tx_laser(hw);
5247
5248 if (hw->phy.ops.set_phy_power)
5249 hw->phy.ops.set_phy_power(hw, true);
5250
5251 smp_mb__before_atomic();
5252 clear_bit(__IXGBE_DOWN, &adapter->state);
5253 ixgbe_napi_enable_all(adapter);
5254
5255 if (ixgbe_is_sfp(hw)) {
5256 ixgbe_sfp_link_config(adapter);
5257 } else {
5258 err = ixgbe_non_sfp_link_config(hw);
5259 if (err)
5260 e_err(probe, "link_config FAILED %d\n", err);
5261 }
5262
5263 /* clear any pending interrupts, may auto mask */
5264 IXGBE_READ_REG(hw, IXGBE_EICR);
5265 ixgbe_irq_enable(adapter, true, true);
5266
5267 /*
5268 * If this adapter has a fan, check to see if we had a failure
5269 * before we enabled the interrupt.
5270 */
5271 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
5272 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
5273 if (esdp & IXGBE_ESDP_SDP1)
5274 e_crit(drv, "Fan has stopped, replace the adapter\n");
5275 }
5276
5277 /* bring the link up in the watchdog, this could race with our first
5278 * link up interrupt but shouldn't be a problem */
5279 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
5280 adapter->link_check_timeout = jiffies;
5281 mod_timer(&adapter->service_timer, jiffies);
5282
5283 /* Set PF Reset Done bit so PF/VF Mail Ops can work */
5284 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
5285 ctrl_ext |= IXGBE_CTRL_EXT_PFRSTD;
5286 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
5287 }
5288
5289 void ixgbe_reinit_locked(struct ixgbe_adapter *adapter)
5290 {
5291 WARN_ON(in_interrupt());
5292 /* put off any impending NetWatchDogTimeout */
5293 netif_trans_update(adapter->netdev);
5294
5295 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
5296 usleep_range(1000, 2000);
5297 ixgbe_down(adapter);
5298 /*
5299 * If SR-IOV enabled then wait a bit before bringing the adapter
5300 * back up to give the VFs time to respond to the reset. The
5301 * two second wait is based upon the watchdog timer cycle in
5302 * the VF driver.
5303 */
5304 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
5305 msleep(2000);
5306 ixgbe_up(adapter);
5307 clear_bit(__IXGBE_RESETTING, &adapter->state);
5308 }
5309
5310 void ixgbe_up(struct ixgbe_adapter *adapter)
5311 {
5312 /* hardware has been reset, we need to reload some things */
5313 ixgbe_configure(adapter);
5314
5315 ixgbe_up_complete(adapter);
5316 }
5317
5318 void ixgbe_reset(struct ixgbe_adapter *adapter)
5319 {
5320 struct ixgbe_hw *hw = &adapter->hw;
5321 struct net_device *netdev = adapter->netdev;
5322 int err;
5323
5324 if (ixgbe_removed(hw->hw_addr))
5325 return;
5326 /* lock SFP init bit to prevent race conditions with the watchdog */
5327 while (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state))
5328 usleep_range(1000, 2000);
5329
5330 /* clear all SFP and link config related flags while holding SFP_INIT */
5331 adapter->flags2 &= ~(IXGBE_FLAG2_SEARCH_FOR_SFP |
5332 IXGBE_FLAG2_SFP_NEEDS_RESET);
5333 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG;
5334
5335 err = hw->mac.ops.init_hw(hw);
5336 switch (err) {
5337 case 0:
5338 case IXGBE_ERR_SFP_NOT_PRESENT:
5339 case IXGBE_ERR_SFP_NOT_SUPPORTED:
5340 break;
5341 case IXGBE_ERR_MASTER_REQUESTS_PENDING:
5342 e_dev_err("master disable timed out\n");
5343 break;
5344 case IXGBE_ERR_EEPROM_VERSION:
5345 /* We are running on a pre-production device, log a warning */
5346 e_dev_warn("This device is a pre-production adapter/LOM. "
5347 "Please be aware there may be issues associated with "
5348 "your hardware. If you are experiencing problems "
5349 "please contact your Intel or hardware "
5350 "representative who provided you with this "
5351 "hardware.\n");
5352 break;
5353 default:
5354 e_dev_err("Hardware Error: %d\n", err);
5355 }
5356
5357 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state);
5358
5359 /* flush entries out of MAC table */
5360 ixgbe_flush_sw_mac_table(adapter);
5361 __dev_uc_unsync(netdev, NULL);
5362
5363 /* do not flush user set addresses */
5364 ixgbe_mac_set_default_filter(adapter);
5365
5366 /* update SAN MAC vmdq pool selection */
5367 if (hw->mac.san_mac_rar_index)
5368 hw->mac.ops.set_vmdq_san_mac(hw, VMDQ_P(0));
5369
5370 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state))
5371 ixgbe_ptp_reset(adapter);
5372
5373 if (hw->phy.ops.set_phy_power) {
5374 if (!netif_running(adapter->netdev) && !adapter->wol)
5375 hw->phy.ops.set_phy_power(hw, false);
5376 else
5377 hw->phy.ops.set_phy_power(hw, true);
5378 }
5379 }
5380
5381 /**
5382 * ixgbe_clean_tx_ring - Free Tx Buffers
5383 * @tx_ring: ring to be cleaned
5384 **/
5385 static void ixgbe_clean_tx_ring(struct ixgbe_ring *tx_ring)
5386 {
5387 struct ixgbe_tx_buffer *tx_buffer_info;
5388 unsigned long size;
5389 u16 i;
5390
5391 /* ring already cleared, nothing to do */
5392 if (!tx_ring->tx_buffer_info)
5393 return;
5394
5395 /* Free all the Tx ring sk_buffs */
5396 for (i = 0; i < tx_ring->count; i++) {
5397 tx_buffer_info = &tx_ring->tx_buffer_info[i];
5398 ixgbe_unmap_and_free_tx_resource(tx_ring, tx_buffer_info);
5399 }
5400
5401 netdev_tx_reset_queue(txring_txq(tx_ring));
5402
5403 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
5404 memset(tx_ring->tx_buffer_info, 0, size);
5405
5406 /* Zero out the descriptor ring */
5407 memset(tx_ring->desc, 0, tx_ring->size);
5408
5409 tx_ring->next_to_use = 0;
5410 tx_ring->next_to_clean = 0;
5411 }
5412
5413 /**
5414 * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues
5415 * @adapter: board private structure
5416 **/
5417 static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter)
5418 {
5419 int i;
5420
5421 for (i = 0; i < adapter->num_rx_queues; i++)
5422 ixgbe_clean_rx_ring(adapter->rx_ring[i]);
5423 }
5424
5425 /**
5426 * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues
5427 * @adapter: board private structure
5428 **/
5429 static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter)
5430 {
5431 int i;
5432
5433 for (i = 0; i < adapter->num_tx_queues; i++)
5434 ixgbe_clean_tx_ring(adapter->tx_ring[i]);
5435 }
5436
5437 static void ixgbe_fdir_filter_exit(struct ixgbe_adapter *adapter)
5438 {
5439 struct hlist_node *node2;
5440 struct ixgbe_fdir_filter *filter;
5441
5442 spin_lock(&adapter->fdir_perfect_lock);
5443
5444 hlist_for_each_entry_safe(filter, node2,
5445 &adapter->fdir_filter_list, fdir_node) {
5446 hlist_del(&filter->fdir_node);
5447 kfree(filter);
5448 }
5449 adapter->fdir_filter_count = 0;
5450
5451 spin_unlock(&adapter->fdir_perfect_lock);
5452 }
5453
5454 static int ixgbe_disable_macvlan(struct net_device *upper, void *data)
5455 {
5456 if (netif_is_macvlan(upper)) {
5457 struct macvlan_dev *vlan = netdev_priv(upper);
5458
5459 if (vlan->fwd_priv) {
5460 netif_tx_stop_all_queues(upper);
5461 netif_carrier_off(upper);
5462 netif_tx_disable(upper);
5463 }
5464 }
5465
5466 return 0;
5467 }
5468
5469 void ixgbe_down(struct ixgbe_adapter *adapter)
5470 {
5471 struct net_device *netdev = adapter->netdev;
5472 struct ixgbe_hw *hw = &adapter->hw;
5473 int i;
5474
5475 /* signal that we are down to the interrupt handler */
5476 if (test_and_set_bit(__IXGBE_DOWN, &adapter->state))
5477 return; /* do nothing if already down */
5478
5479 /* disable receives */
5480 hw->mac.ops.disable_rx(hw);
5481
5482 /* disable all enabled rx queues */
5483 for (i = 0; i < adapter->num_rx_queues; i++)
5484 /* this call also flushes the previous write */
5485 ixgbe_disable_rx_queue(adapter, adapter->rx_ring[i]);
5486
5487 usleep_range(10000, 20000);
5488
5489 netif_tx_stop_all_queues(netdev);
5490
5491 /* call carrier off first to avoid false dev_watchdog timeouts */
5492 netif_carrier_off(netdev);
5493 netif_tx_disable(netdev);
5494
5495 /* disable any upper devices */
5496 netdev_walk_all_upper_dev_rcu(adapter->netdev,
5497 ixgbe_disable_macvlan, NULL);
5498
5499 ixgbe_irq_disable(adapter);
5500
5501 ixgbe_napi_disable_all(adapter);
5502
5503 clear_bit(__IXGBE_RESET_REQUESTED, &adapter->state);
5504 adapter->flags2 &= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT;
5505 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE;
5506
5507 del_timer_sync(&adapter->service_timer);
5508
5509 if (adapter->num_vfs) {
5510 /* Clear EITR Select mapping */
5511 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, 0);
5512
5513 /* Mark all the VFs as inactive */
5514 for (i = 0 ; i < adapter->num_vfs; i++)
5515 adapter->vfinfo[i].clear_to_send = false;
5516
5517 /* ping all the active vfs to let them know we are going down */
5518 ixgbe_ping_all_vfs(adapter);
5519
5520 /* Disable all VFTE/VFRE TX/RX */
5521 ixgbe_disable_tx_rx(adapter);
5522 }
5523
5524 /* disable transmits in the hardware now that interrupts are off */
5525 for (i = 0; i < adapter->num_tx_queues; i++) {
5526 u8 reg_idx = adapter->tx_ring[i]->reg_idx;
5527 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH);
5528 }
5529
5530 /* Disable the Tx DMA engine on 82599 and later MAC */
5531 switch (hw->mac.type) {
5532 case ixgbe_mac_82599EB:
5533 case ixgbe_mac_X540:
5534 case ixgbe_mac_X550:
5535 case ixgbe_mac_X550EM_x:
5536 case ixgbe_mac_x550em_a:
5537 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL,
5538 (IXGBE_READ_REG(hw, IXGBE_DMATXCTL) &
5539 ~IXGBE_DMATXCTL_TE));
5540 break;
5541 default:
5542 break;
5543 }
5544
5545 if (!pci_channel_offline(adapter->pdev))
5546 ixgbe_reset(adapter);
5547
5548 /* power down the optics for 82599 SFP+ fiber */
5549 if (hw->mac.ops.disable_tx_laser)
5550 hw->mac.ops.disable_tx_laser(hw);
5551
5552 ixgbe_clean_all_tx_rings(adapter);
5553 ixgbe_clean_all_rx_rings(adapter);
5554 }
5555
5556 /**
5557 * ixgbe_tx_timeout - Respond to a Tx Hang
5558 * @netdev: network interface device structure
5559 **/
5560 static void ixgbe_tx_timeout(struct net_device *netdev)
5561 {
5562 struct ixgbe_adapter *adapter = netdev_priv(netdev);
5563
5564 /* Do the reset outside of interrupt context */
5565 ixgbe_tx_timeout_reset(adapter);
5566 }
5567
5568 #ifdef CONFIG_IXGBE_DCB
5569 static void ixgbe_init_dcb(struct ixgbe_adapter *adapter)
5570 {
5571 struct ixgbe_hw *hw = &adapter->hw;
5572 struct tc_configuration *tc;
5573 int j;
5574
5575 switch (hw->mac.type) {
5576 case ixgbe_mac_82598EB:
5577 case ixgbe_mac_82599EB:
5578 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS;
5579 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS;
5580 break;
5581 case ixgbe_mac_X540:
5582 case ixgbe_mac_X550:
5583 adapter->dcb_cfg.num_tcs.pg_tcs = X540_TRAFFIC_CLASS;
5584 adapter->dcb_cfg.num_tcs.pfc_tcs = X540_TRAFFIC_CLASS;
5585 break;
5586 case ixgbe_mac_X550EM_x:
5587 case ixgbe_mac_x550em_a:
5588 default:
5589 adapter->dcb_cfg.num_tcs.pg_tcs = DEF_TRAFFIC_CLASS;
5590 adapter->dcb_cfg.num_tcs.pfc_tcs = DEF_TRAFFIC_CLASS;
5591 break;
5592 }
5593
5594 /* Configure DCB traffic classes */
5595 for (j = 0; j < MAX_TRAFFIC_CLASS; j++) {
5596 tc = &adapter->dcb_cfg.tc_config[j];
5597 tc->path[DCB_TX_CONFIG].bwg_id = 0;
5598 tc->path[DCB_TX_CONFIG].bwg_percent = 12 + (j & 1);
5599 tc->path[DCB_RX_CONFIG].bwg_id = 0;
5600 tc->path[DCB_RX_CONFIG].bwg_percent = 12 + (j & 1);
5601 tc->dcb_pfc = pfc_disabled;
5602 }
5603
5604 /* Initialize default user to priority mapping, UPx->TC0 */
5605 tc = &adapter->dcb_cfg.tc_config[0];
5606 tc->path[DCB_TX_CONFIG].up_to_tc_bitmap = 0xFF;
5607 tc->path[DCB_RX_CONFIG].up_to_tc_bitmap = 0xFF;
5608
5609 adapter->dcb_cfg.bw_percentage[DCB_TX_CONFIG][0] = 100;
5610 adapter->dcb_cfg.bw_percentage[DCB_RX_CONFIG][0] = 100;
5611 adapter->dcb_cfg.pfc_mode_enable = false;
5612 adapter->dcb_set_bitmap = 0x00;
5613 if (adapter->flags & IXGBE_FLAG_DCB_CAPABLE)
5614 adapter->dcbx_cap = DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_CEE;
5615 memcpy(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
5616 sizeof(adapter->temp_dcb_cfg));
5617 }
5618 #endif
5619
5620 /**
5621 * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter)
5622 * @adapter: board private structure to initialize
5623 *
5624 * ixgbe_sw_init initializes the Adapter private data structure.
5625 * Fields are initialized based on PCI device information and
5626 * OS network device settings (MTU size).
5627 **/
5628 static int ixgbe_sw_init(struct ixgbe_adapter *adapter,
5629 const struct ixgbe_info *ii)
5630 {
5631 struct ixgbe_hw *hw = &adapter->hw;
5632 struct pci_dev *pdev = adapter->pdev;
5633 unsigned int rss, fdir;
5634 u32 fwsm;
5635 int i;
5636
5637 /* PCI config space info */
5638
5639 hw->vendor_id = pdev->vendor;
5640 hw->device_id = pdev->device;
5641 hw->revision_id = pdev->revision;
5642 hw->subsystem_vendor_id = pdev->subsystem_vendor;
5643 hw->subsystem_device_id = pdev->subsystem_device;
5644
5645 /* get_invariants needs the device IDs */
5646 ii->get_invariants(hw);
5647
5648 /* Set common capability flags and settings */
5649 rss = min_t(int, ixgbe_max_rss_indices(adapter), num_online_cpus());
5650 adapter->ring_feature[RING_F_RSS].limit = rss;
5651 adapter->flags2 |= IXGBE_FLAG2_RSC_CAPABLE;
5652 adapter->max_q_vectors = MAX_Q_VECTORS_82599;
5653 adapter->atr_sample_rate = 20;
5654 fdir = min_t(int, IXGBE_MAX_FDIR_INDICES, num_online_cpus());
5655 adapter->ring_feature[RING_F_FDIR].limit = fdir;
5656 adapter->fdir_pballoc = IXGBE_FDIR_PBALLOC_64K;
5657 #ifdef CONFIG_IXGBE_DCA
5658 adapter->flags |= IXGBE_FLAG_DCA_CAPABLE;
5659 #endif
5660 #ifdef CONFIG_IXGBE_DCB
5661 adapter->flags |= IXGBE_FLAG_DCB_CAPABLE;
5662 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
5663 #endif
5664 #ifdef IXGBE_FCOE
5665 adapter->flags |= IXGBE_FLAG_FCOE_CAPABLE;
5666 adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
5667 #ifdef CONFIG_IXGBE_DCB
5668 /* Default traffic class to use for FCoE */
5669 adapter->fcoe.up = IXGBE_FCOE_DEFTC;
5670 #endif /* CONFIG_IXGBE_DCB */
5671 #endif /* IXGBE_FCOE */
5672
5673 /* initialize static ixgbe jump table entries */
5674 adapter->jump_tables[0] = kzalloc(sizeof(*adapter->jump_tables[0]),
5675 GFP_KERNEL);
5676 if (!adapter->jump_tables[0])
5677 return -ENOMEM;
5678 adapter->jump_tables[0]->mat = ixgbe_ipv4_fields;
5679
5680 for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++)
5681 adapter->jump_tables[i] = NULL;
5682
5683 adapter->mac_table = kzalloc(sizeof(struct ixgbe_mac_addr) *
5684 hw->mac.num_rar_entries,
5685 GFP_ATOMIC);
5686 if (!adapter->mac_table)
5687 return -ENOMEM;
5688
5689 /* Set MAC specific capability flags and exceptions */
5690 switch (hw->mac.type) {
5691 case ixgbe_mac_82598EB:
5692 adapter->flags2 &= ~IXGBE_FLAG2_RSC_CAPABLE;
5693
5694 if (hw->device_id == IXGBE_DEV_ID_82598AT)
5695 adapter->flags |= IXGBE_FLAG_FAN_FAIL_CAPABLE;
5696
5697 adapter->max_q_vectors = MAX_Q_VECTORS_82598;
5698 adapter->ring_feature[RING_F_FDIR].limit = 0;
5699 adapter->atr_sample_rate = 0;
5700 adapter->fdir_pballoc = 0;
5701 #ifdef IXGBE_FCOE
5702 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE;
5703 adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
5704 #ifdef CONFIG_IXGBE_DCB
5705 adapter->fcoe.up = 0;
5706 #endif /* IXGBE_DCB */
5707 #endif /* IXGBE_FCOE */
5708 break;
5709 case ixgbe_mac_82599EB:
5710 if (hw->device_id == IXGBE_DEV_ID_82599_T3_LOM)
5711 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE;
5712 break;
5713 case ixgbe_mac_X540:
5714 fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw));
5715 if (fwsm & IXGBE_FWSM_TS_ENABLED)
5716 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE;
5717 break;
5718 case ixgbe_mac_x550em_a:
5719 adapter->flags |= IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE;
5720 /* fall through */
5721 case ixgbe_mac_X550EM_x:
5722 #ifdef CONFIG_IXGBE_DCB
5723 adapter->flags &= ~IXGBE_FLAG_DCB_CAPABLE;
5724 #endif
5725 #ifdef IXGBE_FCOE
5726 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE;
5727 #ifdef CONFIG_IXGBE_DCB
5728 adapter->fcoe.up = 0;
5729 #endif /* IXGBE_DCB */
5730 #endif /* IXGBE_FCOE */
5731 /* Fall Through */
5732 case ixgbe_mac_X550:
5733 #ifdef CONFIG_IXGBE_DCA
5734 adapter->flags &= ~IXGBE_FLAG_DCA_CAPABLE;
5735 #endif
5736 adapter->flags |= IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE;
5737 break;
5738 default:
5739 break;
5740 }
5741
5742 #ifdef IXGBE_FCOE
5743 /* FCoE support exists, always init the FCoE lock */
5744 spin_lock_init(&adapter->fcoe.lock);
5745
5746 #endif
5747 /* n-tuple support exists, always init our spinlock */
5748 spin_lock_init(&adapter->fdir_perfect_lock);
5749
5750 #ifdef CONFIG_IXGBE_DCB
5751 ixgbe_init_dcb(adapter);
5752 #endif
5753
5754 /* default flow control settings */
5755 hw->fc.requested_mode = ixgbe_fc_full;
5756 hw->fc.current_mode = ixgbe_fc_full; /* init for ethtool output */
5757 ixgbe_pbthresh_setup(adapter);
5758 hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE;
5759 hw->fc.send_xon = true;
5760 hw->fc.disable_fc_autoneg = ixgbe_device_supports_autoneg_fc(hw);
5761
5762 #ifdef CONFIG_PCI_IOV
5763 if (max_vfs > 0)
5764 e_dev_warn("Enabling SR-IOV VFs using the max_vfs module parameter is deprecated - please use the pci sysfs interface instead.\n");
5765
5766 /* assign number of SR-IOV VFs */
5767 if (hw->mac.type != ixgbe_mac_82598EB) {
5768 if (max_vfs > IXGBE_MAX_VFS_DRV_LIMIT) {
5769 adapter->num_vfs = 0;
5770 e_dev_warn("max_vfs parameter out of range. Not assigning any SR-IOV VFs\n");
5771 } else {
5772 adapter->num_vfs = max_vfs;
5773 }
5774 }
5775 #endif /* CONFIG_PCI_IOV */
5776
5777 /* enable itr by default in dynamic mode */
5778 adapter->rx_itr_setting = 1;
5779 adapter->tx_itr_setting = 1;
5780
5781 /* set default ring sizes */
5782 adapter->tx_ring_count = IXGBE_DEFAULT_TXD;
5783 adapter->rx_ring_count = IXGBE_DEFAULT_RXD;
5784
5785 /* set default work limits */
5786 adapter->tx_work_limit = IXGBE_DEFAULT_TX_WORK;
5787
5788 /* initialize eeprom parameters */
5789 if (ixgbe_init_eeprom_params_generic(hw)) {
5790 e_dev_err("EEPROM initialization failed\n");
5791 return -EIO;
5792 }
5793
5794 /* PF holds first pool slot */
5795 set_bit(0, &adapter->fwd_bitmask);
5796 set_bit(__IXGBE_DOWN, &adapter->state);
5797
5798 return 0;
5799 }
5800
5801 /**
5802 * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors)
5803 * @tx_ring: tx descriptor ring (for a specific queue) to setup
5804 *
5805 * Return 0 on success, negative on failure
5806 **/
5807 int ixgbe_setup_tx_resources(struct ixgbe_ring *tx_ring)
5808 {
5809 struct device *dev = tx_ring->dev;
5810 int orig_node = dev_to_node(dev);
5811 int ring_node = -1;
5812 int size;
5813
5814 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count;
5815
5816 if (tx_ring->q_vector)
5817 ring_node = tx_ring->q_vector->numa_node;
5818
5819 tx_ring->tx_buffer_info = vzalloc_node(size, ring_node);
5820 if (!tx_ring->tx_buffer_info)
5821 tx_ring->tx_buffer_info = vzalloc(size);
5822 if (!tx_ring->tx_buffer_info)
5823 goto err;
5824
5825 u64_stats_init(&tx_ring->syncp);
5826
5827 /* round up to nearest 4K */
5828 tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc);
5829 tx_ring->size = ALIGN(tx_ring->size, 4096);
5830
5831 set_dev_node(dev, ring_node);
5832 tx_ring->desc = dma_alloc_coherent(dev,
5833 tx_ring->size,
5834 &tx_ring->dma,
5835 GFP_KERNEL);
5836 set_dev_node(dev, orig_node);
5837 if (!tx_ring->desc)
5838 tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size,
5839 &tx_ring->dma, GFP_KERNEL);
5840 if (!tx_ring->desc)
5841 goto err;
5842
5843 tx_ring->next_to_use = 0;
5844 tx_ring->next_to_clean = 0;
5845 return 0;
5846
5847 err:
5848 vfree(tx_ring->tx_buffer_info);
5849 tx_ring->tx_buffer_info = NULL;
5850 dev_err(dev, "Unable to allocate memory for the Tx descriptor ring\n");
5851 return -ENOMEM;
5852 }
5853
5854 /**
5855 * ixgbe_setup_all_tx_resources - allocate all queues Tx resources
5856 * @adapter: board private structure
5857 *
5858 * If this function returns with an error, then it's possible one or
5859 * more of the rings is populated (while the rest are not). It is the
5860 * callers duty to clean those orphaned rings.
5861 *
5862 * Return 0 on success, negative on failure
5863 **/
5864 static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter)
5865 {
5866 int i, err = 0;
5867
5868 for (i = 0; i < adapter->num_tx_queues; i++) {
5869 err = ixgbe_setup_tx_resources(adapter->tx_ring[i]);
5870 if (!err)
5871 continue;
5872
5873 e_err(probe, "Allocation for Tx Queue %u failed\n", i);
5874 goto err_setup_tx;
5875 }
5876
5877 return 0;
5878 err_setup_tx:
5879 /* rewind the index freeing the rings as we go */
5880 while (i--)
5881 ixgbe_free_tx_resources(adapter->tx_ring[i]);
5882 return err;
5883 }
5884
5885 /**
5886 * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors)
5887 * @rx_ring: rx descriptor ring (for a specific queue) to setup
5888 *
5889 * Returns 0 on success, negative on failure
5890 **/
5891 int ixgbe_setup_rx_resources(struct ixgbe_ring *rx_ring)
5892 {
5893 struct device *dev = rx_ring->dev;
5894 int orig_node = dev_to_node(dev);
5895 int ring_node = -1;
5896 int size;
5897
5898 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count;
5899
5900 if (rx_ring->q_vector)
5901 ring_node = rx_ring->q_vector->numa_node;
5902
5903 rx_ring->rx_buffer_info = vzalloc_node(size, ring_node);
5904 if (!rx_ring->rx_buffer_info)
5905 rx_ring->rx_buffer_info = vzalloc(size);
5906 if (!rx_ring->rx_buffer_info)
5907 goto err;
5908
5909 u64_stats_init(&rx_ring->syncp);
5910
5911 /* Round up to nearest 4K */
5912 rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc);
5913 rx_ring->size = ALIGN(rx_ring->size, 4096);
5914
5915 set_dev_node(dev, ring_node);
5916 rx_ring->desc = dma_alloc_coherent(dev,
5917 rx_ring->size,
5918 &rx_ring->dma,
5919 GFP_KERNEL);
5920 set_dev_node(dev, orig_node);
5921 if (!rx_ring->desc)
5922 rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size,
5923 &rx_ring->dma, GFP_KERNEL);
5924 if (!rx_ring->desc)
5925 goto err;
5926
5927 rx_ring->next_to_clean = 0;
5928 rx_ring->next_to_use = 0;
5929
5930 return 0;
5931 err:
5932 vfree(rx_ring->rx_buffer_info);
5933 rx_ring->rx_buffer_info = NULL;
5934 dev_err(dev, "Unable to allocate memory for the Rx descriptor ring\n");
5935 return -ENOMEM;
5936 }
5937
5938 /**
5939 * ixgbe_setup_all_rx_resources - allocate all queues Rx resources
5940 * @adapter: board private structure
5941 *
5942 * If this function returns with an error, then it's possible one or
5943 * more of the rings is populated (while the rest are not). It is the
5944 * callers duty to clean those orphaned rings.
5945 *
5946 * Return 0 on success, negative on failure
5947 **/
5948 static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter)
5949 {
5950 int i, err = 0;
5951
5952 for (i = 0; i < adapter->num_rx_queues; i++) {
5953 err = ixgbe_setup_rx_resources(adapter->rx_ring[i]);
5954 if (!err)
5955 continue;
5956
5957 e_err(probe, "Allocation for Rx Queue %u failed\n", i);
5958 goto err_setup_rx;
5959 }
5960
5961 #ifdef IXGBE_FCOE
5962 err = ixgbe_setup_fcoe_ddp_resources(adapter);
5963 if (!err)
5964 #endif
5965 return 0;
5966 err_setup_rx:
5967 /* rewind the index freeing the rings as we go */
5968 while (i--)
5969 ixgbe_free_rx_resources(adapter->rx_ring[i]);
5970 return err;
5971 }
5972
5973 /**
5974 * ixgbe_free_tx_resources - Free Tx Resources per Queue
5975 * @tx_ring: Tx descriptor ring for a specific queue
5976 *
5977 * Free all transmit software resources
5978 **/
5979 void ixgbe_free_tx_resources(struct ixgbe_ring *tx_ring)
5980 {
5981 ixgbe_clean_tx_ring(tx_ring);
5982
5983 vfree(tx_ring->tx_buffer_info);
5984 tx_ring->tx_buffer_info = NULL;
5985
5986 /* if not set, then don't free */
5987 if (!tx_ring->desc)
5988 return;
5989
5990 dma_free_coherent(tx_ring->dev, tx_ring->size,
5991 tx_ring->desc, tx_ring->dma);
5992
5993 tx_ring->desc = NULL;
5994 }
5995
5996 /**
5997 * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues
5998 * @adapter: board private structure
5999 *
6000 * Free all transmit software resources
6001 **/
6002 static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter)
6003 {
6004 int i;
6005
6006 for (i = 0; i < adapter->num_tx_queues; i++)
6007 if (adapter->tx_ring[i]->desc)
6008 ixgbe_free_tx_resources(adapter->tx_ring[i]);
6009 }
6010
6011 /**
6012 * ixgbe_free_rx_resources - Free Rx Resources
6013 * @rx_ring: ring to clean the resources from
6014 *
6015 * Free all receive software resources
6016 **/
6017 void ixgbe_free_rx_resources(struct ixgbe_ring *rx_ring)
6018 {
6019 ixgbe_clean_rx_ring(rx_ring);
6020
6021 vfree(rx_ring->rx_buffer_info);
6022 rx_ring->rx_buffer_info = NULL;
6023
6024 /* if not set, then don't free */
6025 if (!rx_ring->desc)
6026 return;
6027
6028 dma_free_coherent(rx_ring->dev, rx_ring->size,
6029 rx_ring->desc, rx_ring->dma);
6030
6031 rx_ring->desc = NULL;
6032 }
6033
6034 /**
6035 * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues
6036 * @adapter: board private structure
6037 *
6038 * Free all receive software resources
6039 **/
6040 static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter)
6041 {
6042 int i;
6043
6044 #ifdef IXGBE_FCOE
6045 ixgbe_free_fcoe_ddp_resources(adapter);
6046
6047 #endif
6048 for (i = 0; i < adapter->num_rx_queues; i++)
6049 if (adapter->rx_ring[i]->desc)
6050 ixgbe_free_rx_resources(adapter->rx_ring[i]);
6051 }
6052
6053 /**
6054 * ixgbe_change_mtu - Change the Maximum Transfer Unit
6055 * @netdev: network interface device structure
6056 * @new_mtu: new value for maximum frame size
6057 *
6058 * Returns 0 on success, negative on failure
6059 **/
6060 static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu)
6061 {
6062 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6063
6064 /*
6065 * For 82599EB we cannot allow legacy VFs to enable their receive
6066 * paths when MTU greater than 1500 is configured. So display a
6067 * warning that legacy VFs will be disabled.
6068 */
6069 if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) &&
6070 (adapter->hw.mac.type == ixgbe_mac_82599EB) &&
6071 (new_mtu > ETH_DATA_LEN))
6072 e_warn(probe, "Setting MTU > 1500 will disable legacy VFs\n");
6073
6074 e_info(probe, "changing MTU from %d to %d\n", netdev->mtu, new_mtu);
6075
6076 /* must set new MTU before calling down or up */
6077 netdev->mtu = new_mtu;
6078
6079 if (netif_running(netdev))
6080 ixgbe_reinit_locked(adapter);
6081
6082 return 0;
6083 }
6084
6085 /**
6086 * ixgbe_open - Called when a network interface is made active
6087 * @netdev: network interface device structure
6088 *
6089 * Returns 0 on success, negative value on failure
6090 *
6091 * The open entry point is called when a network interface is made
6092 * active by the system (IFF_UP). At this point all resources needed
6093 * for transmit and receive operations are allocated, the interrupt
6094 * handler is registered with the OS, the watchdog timer is started,
6095 * and the stack is notified that the interface is ready.
6096 **/
6097 int ixgbe_open(struct net_device *netdev)
6098 {
6099 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6100 struct ixgbe_hw *hw = &adapter->hw;
6101 int err, queues;
6102
6103 /* disallow open during test */
6104 if (test_bit(__IXGBE_TESTING, &adapter->state))
6105 return -EBUSY;
6106
6107 netif_carrier_off(netdev);
6108
6109 /* allocate transmit descriptors */
6110 err = ixgbe_setup_all_tx_resources(adapter);
6111 if (err)
6112 goto err_setup_tx;
6113
6114 /* allocate receive descriptors */
6115 err = ixgbe_setup_all_rx_resources(adapter);
6116 if (err)
6117 goto err_setup_rx;
6118
6119 ixgbe_configure(adapter);
6120
6121 err = ixgbe_request_irq(adapter);
6122 if (err)
6123 goto err_req_irq;
6124
6125 /* Notify the stack of the actual queue counts. */
6126 if (adapter->num_rx_pools > 1)
6127 queues = adapter->num_rx_queues_per_pool;
6128 else
6129 queues = adapter->num_tx_queues;
6130
6131 err = netif_set_real_num_tx_queues(netdev, queues);
6132 if (err)
6133 goto err_set_queues;
6134
6135 if (adapter->num_rx_pools > 1 &&
6136 adapter->num_rx_queues > IXGBE_MAX_L2A_QUEUES)
6137 queues = IXGBE_MAX_L2A_QUEUES;
6138 else
6139 queues = adapter->num_rx_queues;
6140 err = netif_set_real_num_rx_queues(netdev, queues);
6141 if (err)
6142 goto err_set_queues;
6143
6144 ixgbe_ptp_init(adapter);
6145
6146 ixgbe_up_complete(adapter);
6147
6148 ixgbe_clear_udp_tunnel_port(adapter, IXGBE_VXLANCTRL_ALL_UDPPORT_MASK);
6149 udp_tunnel_get_rx_info(netdev);
6150
6151 return 0;
6152
6153 err_set_queues:
6154 ixgbe_free_irq(adapter);
6155 err_req_irq:
6156 ixgbe_free_all_rx_resources(adapter);
6157 if (hw->phy.ops.set_phy_power && !adapter->wol)
6158 hw->phy.ops.set_phy_power(&adapter->hw, false);
6159 err_setup_rx:
6160 ixgbe_free_all_tx_resources(adapter);
6161 err_setup_tx:
6162 ixgbe_reset(adapter);
6163
6164 return err;
6165 }
6166
6167 static void ixgbe_close_suspend(struct ixgbe_adapter *adapter)
6168 {
6169 ixgbe_ptp_suspend(adapter);
6170
6171 if (adapter->hw.phy.ops.enter_lplu) {
6172 adapter->hw.phy.reset_disable = true;
6173 ixgbe_down(adapter);
6174 adapter->hw.phy.ops.enter_lplu(&adapter->hw);
6175 adapter->hw.phy.reset_disable = false;
6176 } else {
6177 ixgbe_down(adapter);
6178 }
6179
6180 ixgbe_free_irq(adapter);
6181
6182 ixgbe_free_all_tx_resources(adapter);
6183 ixgbe_free_all_rx_resources(adapter);
6184 }
6185
6186 /**
6187 * ixgbe_close - Disables a network interface
6188 * @netdev: network interface device structure
6189 *
6190 * Returns 0, this is not allowed to fail
6191 *
6192 * The close entry point is called when an interface is de-activated
6193 * by the OS. The hardware is still under the drivers control, but
6194 * needs to be disabled. A global MAC reset is issued to stop the
6195 * hardware, and all transmit and receive resources are freed.
6196 **/
6197 int ixgbe_close(struct net_device *netdev)
6198 {
6199 struct ixgbe_adapter *adapter = netdev_priv(netdev);
6200
6201 ixgbe_ptp_stop(adapter);
6202
6203 ixgbe_close_suspend(adapter);
6204
6205 ixgbe_fdir_filter_exit(adapter);
6206
6207 ixgbe_release_hw_control(adapter);
6208
6209 return 0;
6210 }
6211
6212 #ifdef CONFIG_PM
6213 static int ixgbe_resume(struct pci_dev *pdev)
6214 {
6215 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
6216 struct net_device *netdev = adapter->netdev;
6217 u32 err;
6218
6219 adapter->hw.hw_addr = adapter->io_addr;
6220 pci_set_power_state(pdev, PCI_D0);
6221 pci_restore_state(pdev);
6222 /*
6223 * pci_restore_state clears dev->state_saved so call
6224 * pci_save_state to restore it.
6225 */
6226 pci_save_state(pdev);
6227
6228 err = pci_enable_device_mem(pdev);
6229 if (err) {
6230 e_dev_err("Cannot enable PCI device from suspend\n");
6231 return err;
6232 }
6233 smp_mb__before_atomic();
6234 clear_bit(__IXGBE_DISABLED, &adapter->state);
6235 pci_set_master(pdev);
6236
6237 pci_wake_from_d3(pdev, false);
6238
6239 ixgbe_reset(adapter);
6240
6241 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
6242
6243 rtnl_lock();
6244 err = ixgbe_init_interrupt_scheme(adapter);
6245 if (!err && netif_running(netdev))
6246 err = ixgbe_open(netdev);
6247
6248 rtnl_unlock();
6249
6250 if (err)
6251 return err;
6252
6253 netif_device_attach(netdev);
6254
6255 return 0;
6256 }
6257 #endif /* CONFIG_PM */
6258
6259 static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake)
6260 {
6261 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
6262 struct net_device *netdev = adapter->netdev;
6263 struct ixgbe_hw *hw = &adapter->hw;
6264 u32 ctrl, fctrl;
6265 u32 wufc = adapter->wol;
6266 #ifdef CONFIG_PM
6267 int retval = 0;
6268 #endif
6269
6270 netif_device_detach(netdev);
6271
6272 rtnl_lock();
6273 if (netif_running(netdev))
6274 ixgbe_close_suspend(adapter);
6275 rtnl_unlock();
6276
6277 ixgbe_clear_interrupt_scheme(adapter);
6278
6279 #ifdef CONFIG_PM
6280 retval = pci_save_state(pdev);
6281 if (retval)
6282 return retval;
6283
6284 #endif
6285 if (hw->mac.ops.stop_link_on_d3)
6286 hw->mac.ops.stop_link_on_d3(hw);
6287
6288 if (wufc) {
6289 ixgbe_set_rx_mode(netdev);
6290
6291 /* enable the optics for 82599 SFP+ fiber as we can WoL */
6292 if (hw->mac.ops.enable_tx_laser)
6293 hw->mac.ops.enable_tx_laser(hw);
6294
6295 /* turn on all-multi mode if wake on multicast is enabled */
6296 if (wufc & IXGBE_WUFC_MC) {
6297 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
6298 fctrl |= IXGBE_FCTRL_MPE;
6299 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
6300 }
6301
6302 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
6303 ctrl |= IXGBE_CTRL_GIO_DIS;
6304 IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
6305
6306 IXGBE_WRITE_REG(hw, IXGBE_WUFC, wufc);
6307 } else {
6308 IXGBE_WRITE_REG(hw, IXGBE_WUC, 0);
6309 IXGBE_WRITE_REG(hw, IXGBE_WUFC, 0);
6310 }
6311
6312 switch (hw->mac.type) {
6313 case ixgbe_mac_82598EB:
6314 pci_wake_from_d3(pdev, false);
6315 break;
6316 case ixgbe_mac_82599EB:
6317 case ixgbe_mac_X540:
6318 case ixgbe_mac_X550:
6319 case ixgbe_mac_X550EM_x:
6320 case ixgbe_mac_x550em_a:
6321 pci_wake_from_d3(pdev, !!wufc);
6322 break;
6323 default:
6324 break;
6325 }
6326
6327 *enable_wake = !!wufc;
6328 if (hw->phy.ops.set_phy_power && !*enable_wake)
6329 hw->phy.ops.set_phy_power(hw, false);
6330
6331 ixgbe_release_hw_control(adapter);
6332
6333 if (!test_and_set_bit(__IXGBE_DISABLED, &adapter->state))
6334 pci_disable_device(pdev);
6335
6336 return 0;
6337 }
6338
6339 #ifdef CONFIG_PM
6340 static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state)
6341 {
6342 int retval;
6343 bool wake;
6344
6345 retval = __ixgbe_shutdown(pdev, &wake);
6346 if (retval)
6347 return retval;
6348
6349 if (wake) {
6350 pci_prepare_to_sleep(pdev);
6351 } else {
6352 pci_wake_from_d3(pdev, false);
6353 pci_set_power_state(pdev, PCI_D3hot);
6354 }
6355
6356 return 0;
6357 }
6358 #endif /* CONFIG_PM */
6359
6360 static void ixgbe_shutdown(struct pci_dev *pdev)
6361 {
6362 bool wake;
6363
6364 __ixgbe_shutdown(pdev, &wake);
6365
6366 if (system_state == SYSTEM_POWER_OFF) {
6367 pci_wake_from_d3(pdev, wake);
6368 pci_set_power_state(pdev, PCI_D3hot);
6369 }
6370 }
6371
6372 /**
6373 * ixgbe_update_stats - Update the board statistics counters.
6374 * @adapter: board private structure
6375 **/
6376 void ixgbe_update_stats(struct ixgbe_adapter *adapter)
6377 {
6378 struct net_device *netdev = adapter->netdev;
6379 struct ixgbe_hw *hw = &adapter->hw;
6380 struct ixgbe_hw_stats *hwstats = &adapter->stats;
6381 u64 total_mpc = 0;
6382 u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot;
6383 u64 non_eop_descs = 0, restart_queue = 0, tx_busy = 0;
6384 u64 alloc_rx_page_failed = 0, alloc_rx_buff_failed = 0;
6385 u64 bytes = 0, packets = 0, hw_csum_rx_error = 0;
6386
6387 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
6388 test_bit(__IXGBE_RESETTING, &adapter->state))
6389 return;
6390
6391 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
6392 u64 rsc_count = 0;
6393 u64 rsc_flush = 0;
6394 for (i = 0; i < adapter->num_rx_queues; i++) {
6395 rsc_count += adapter->rx_ring[i]->rx_stats.rsc_count;
6396 rsc_flush += adapter->rx_ring[i]->rx_stats.rsc_flush;
6397 }
6398 adapter->rsc_total_count = rsc_count;
6399 adapter->rsc_total_flush = rsc_flush;
6400 }
6401
6402 for (i = 0; i < adapter->num_rx_queues; i++) {
6403 struct ixgbe_ring *rx_ring = adapter->rx_ring[i];
6404 non_eop_descs += rx_ring->rx_stats.non_eop_descs;
6405 alloc_rx_page_failed += rx_ring->rx_stats.alloc_rx_page_failed;
6406 alloc_rx_buff_failed += rx_ring->rx_stats.alloc_rx_buff_failed;
6407 hw_csum_rx_error += rx_ring->rx_stats.csum_err;
6408 bytes += rx_ring->stats.bytes;
6409 packets += rx_ring->stats.packets;
6410 }
6411 adapter->non_eop_descs = non_eop_descs;
6412 adapter->alloc_rx_page_failed = alloc_rx_page_failed;
6413 adapter->alloc_rx_buff_failed = alloc_rx_buff_failed;
6414 adapter->hw_csum_rx_error = hw_csum_rx_error;
6415 netdev->stats.rx_bytes = bytes;
6416 netdev->stats.rx_packets = packets;
6417
6418 bytes = 0;
6419 packets = 0;
6420 /* gather some stats to the adapter struct that are per queue */
6421 for (i = 0; i < adapter->num_tx_queues; i++) {
6422 struct ixgbe_ring *tx_ring = adapter->tx_ring[i];
6423 restart_queue += tx_ring->tx_stats.restart_queue;
6424 tx_busy += tx_ring->tx_stats.tx_busy;
6425 bytes += tx_ring->stats.bytes;
6426 packets += tx_ring->stats.packets;
6427 }
6428 adapter->restart_queue = restart_queue;
6429 adapter->tx_busy = tx_busy;
6430 netdev->stats.tx_bytes = bytes;
6431 netdev->stats.tx_packets = packets;
6432
6433 hwstats->crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS);
6434
6435 /* 8 register reads */
6436 for (i = 0; i < 8; i++) {
6437 /* for packet buffers not used, the register should read 0 */
6438 mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i));
6439 missed_rx += mpc;
6440 hwstats->mpc[i] += mpc;
6441 total_mpc += hwstats->mpc[i];
6442 hwstats->pxontxc[i] += IXGBE_READ_REG(hw, IXGBE_PXONTXC(i));
6443 hwstats->pxofftxc[i] += IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i));
6444 switch (hw->mac.type) {
6445 case ixgbe_mac_82598EB:
6446 hwstats->rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i));
6447 hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC(i));
6448 hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC(i));
6449 hwstats->pxonrxc[i] +=
6450 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i));
6451 break;
6452 case ixgbe_mac_82599EB:
6453 case ixgbe_mac_X540:
6454 case ixgbe_mac_X550:
6455 case ixgbe_mac_X550EM_x:
6456 case ixgbe_mac_x550em_a:
6457 hwstats->pxonrxc[i] +=
6458 IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i));
6459 break;
6460 default:
6461 break;
6462 }
6463 }
6464
6465 /*16 register reads */
6466 for (i = 0; i < 16; i++) {
6467 hwstats->qptc[i] += IXGBE_READ_REG(hw, IXGBE_QPTC(i));
6468 hwstats->qprc[i] += IXGBE_READ_REG(hw, IXGBE_QPRC(i));
6469 if ((hw->mac.type == ixgbe_mac_82599EB) ||
6470 (hw->mac.type == ixgbe_mac_X540) ||
6471 (hw->mac.type == ixgbe_mac_X550) ||
6472 (hw->mac.type == ixgbe_mac_X550EM_x) ||
6473 (hw->mac.type == ixgbe_mac_x550em_a)) {
6474 hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC_L(i));
6475 IXGBE_READ_REG(hw, IXGBE_QBTC_H(i)); /* to clear */
6476 hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC_L(i));
6477 IXGBE_READ_REG(hw, IXGBE_QBRC_H(i)); /* to clear */
6478 }
6479 }
6480
6481 hwstats->gprc += IXGBE_READ_REG(hw, IXGBE_GPRC);
6482 /* work around hardware counting issue */
6483 hwstats->gprc -= missed_rx;
6484
6485 ixgbe_update_xoff_received(adapter);
6486
6487 /* 82598 hardware only has a 32 bit counter in the high register */
6488 switch (hw->mac.type) {
6489 case ixgbe_mac_82598EB:
6490 hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC);
6491 hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCH);
6492 hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH);
6493 hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORH);
6494 break;
6495 case ixgbe_mac_X540:
6496 case ixgbe_mac_X550:
6497 case ixgbe_mac_X550EM_x:
6498 case ixgbe_mac_x550em_a:
6499 /* OS2BMC stats are X540 and later */
6500 hwstats->o2bgptc += IXGBE_READ_REG(hw, IXGBE_O2BGPTC);
6501 hwstats->o2bspc += IXGBE_READ_REG(hw, IXGBE_O2BSPC);
6502 hwstats->b2ospc += IXGBE_READ_REG(hw, IXGBE_B2OSPC);
6503 hwstats->b2ogprc += IXGBE_READ_REG(hw, IXGBE_B2OGPRC);
6504 case ixgbe_mac_82599EB:
6505 for (i = 0; i < 16; i++)
6506 adapter->hw_rx_no_dma_resources +=
6507 IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
6508 hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCL);
6509 IXGBE_READ_REG(hw, IXGBE_GORCH); /* to clear */
6510 hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCL);
6511 IXGBE_READ_REG(hw, IXGBE_GOTCH); /* to clear */
6512 hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORL);
6513 IXGBE_READ_REG(hw, IXGBE_TORH); /* to clear */
6514 hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXCNT);
6515 hwstats->fdirmatch += IXGBE_READ_REG(hw, IXGBE_FDIRMATCH);
6516 hwstats->fdirmiss += IXGBE_READ_REG(hw, IXGBE_FDIRMISS);
6517 #ifdef IXGBE_FCOE
6518 hwstats->fccrc += IXGBE_READ_REG(hw, IXGBE_FCCRC);
6519 hwstats->fcoerpdc += IXGBE_READ_REG(hw, IXGBE_FCOERPDC);
6520 hwstats->fcoeprc += IXGBE_READ_REG(hw, IXGBE_FCOEPRC);
6521 hwstats->fcoeptc += IXGBE_READ_REG(hw, IXGBE_FCOEPTC);
6522 hwstats->fcoedwrc += IXGBE_READ_REG(hw, IXGBE_FCOEDWRC);
6523 hwstats->fcoedwtc += IXGBE_READ_REG(hw, IXGBE_FCOEDWTC);
6524 /* Add up per cpu counters for total ddp aloc fail */
6525 if (adapter->fcoe.ddp_pool) {
6526 struct ixgbe_fcoe *fcoe = &adapter->fcoe;
6527 struct ixgbe_fcoe_ddp_pool *ddp_pool;
6528 unsigned int cpu;
6529 u64 noddp = 0, noddp_ext_buff = 0;
6530 for_each_possible_cpu(cpu) {
6531 ddp_pool = per_cpu_ptr(fcoe->ddp_pool, cpu);
6532 noddp += ddp_pool->noddp;
6533 noddp_ext_buff += ddp_pool->noddp_ext_buff;
6534 }
6535 hwstats->fcoe_noddp = noddp;
6536 hwstats->fcoe_noddp_ext_buff = noddp_ext_buff;
6537 }
6538 #endif /* IXGBE_FCOE */
6539 break;
6540 default:
6541 break;
6542 }
6543 bprc = IXGBE_READ_REG(hw, IXGBE_BPRC);
6544 hwstats->bprc += bprc;
6545 hwstats->mprc += IXGBE_READ_REG(hw, IXGBE_MPRC);
6546 if (hw->mac.type == ixgbe_mac_82598EB)
6547 hwstats->mprc -= bprc;
6548 hwstats->roc += IXGBE_READ_REG(hw, IXGBE_ROC);
6549 hwstats->prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64);
6550 hwstats->prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127);
6551 hwstats->prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255);
6552 hwstats->prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511);
6553 hwstats->prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023);
6554 hwstats->prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522);
6555 hwstats->rlec += IXGBE_READ_REG(hw, IXGBE_RLEC);
6556 lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC);
6557 hwstats->lxontxc += lxon;
6558 lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
6559 hwstats->lxofftxc += lxoff;
6560 hwstats->gptc += IXGBE_READ_REG(hw, IXGBE_GPTC);
6561 hwstats->mptc += IXGBE_READ_REG(hw, IXGBE_MPTC);
6562 /*
6563 * 82598 errata - tx of flow control packets is included in tx counters
6564 */
6565 xon_off_tot = lxon + lxoff;
6566 hwstats->gptc -= xon_off_tot;
6567 hwstats->mptc -= xon_off_tot;
6568 hwstats->gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN));
6569 hwstats->ruc += IXGBE_READ_REG(hw, IXGBE_RUC);
6570 hwstats->rfc += IXGBE_READ_REG(hw, IXGBE_RFC);
6571 hwstats->rjc += IXGBE_READ_REG(hw, IXGBE_RJC);
6572 hwstats->tpr += IXGBE_READ_REG(hw, IXGBE_TPR);
6573 hwstats->ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64);
6574 hwstats->ptc64 -= xon_off_tot;
6575 hwstats->ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127);
6576 hwstats->ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255);
6577 hwstats->ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511);
6578 hwstats->ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023);
6579 hwstats->ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522);
6580 hwstats->bptc += IXGBE_READ_REG(hw, IXGBE_BPTC);
6581
6582 /* Fill out the OS statistics structure */
6583 netdev->stats.multicast = hwstats->mprc;
6584
6585 /* Rx Errors */
6586 netdev->stats.rx_errors = hwstats->crcerrs + hwstats->rlec;
6587 netdev->stats.rx_dropped = 0;
6588 netdev->stats.rx_length_errors = hwstats->rlec;
6589 netdev->stats.rx_crc_errors = hwstats->crcerrs;
6590 netdev->stats.rx_missed_errors = total_mpc;
6591 }
6592
6593 /**
6594 * ixgbe_fdir_reinit_subtask - worker thread to reinit FDIR filter table
6595 * @adapter: pointer to the device adapter structure
6596 **/
6597 static void ixgbe_fdir_reinit_subtask(struct ixgbe_adapter *adapter)
6598 {
6599 struct ixgbe_hw *hw = &adapter->hw;
6600 int i;
6601
6602 if (!(adapter->flags2 & IXGBE_FLAG2_FDIR_REQUIRES_REINIT))
6603 return;
6604
6605 adapter->flags2 &= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT;
6606
6607 /* if interface is down do nothing */
6608 if (test_bit(__IXGBE_DOWN, &adapter->state))
6609 return;
6610
6611 /* do nothing if we are not using signature filters */
6612 if (!(adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE))
6613 return;
6614
6615 adapter->fdir_overflow++;
6616
6617 if (ixgbe_reinit_fdir_tables_82599(hw) == 0) {
6618 for (i = 0; i < adapter->num_tx_queues; i++)
6619 set_bit(__IXGBE_TX_FDIR_INIT_DONE,
6620 &(adapter->tx_ring[i]->state));
6621 /* re-enable flow director interrupts */
6622 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_FLOW_DIR);
6623 } else {
6624 e_err(probe, "failed to finish FDIR re-initialization, "
6625 "ignored adding FDIR ATR filters\n");
6626 }
6627 }
6628
6629 /**
6630 * ixgbe_check_hang_subtask - check for hung queues and dropped interrupts
6631 * @adapter: pointer to the device adapter structure
6632 *
6633 * This function serves two purposes. First it strobes the interrupt lines
6634 * in order to make certain interrupts are occurring. Secondly it sets the
6635 * bits needed to check for TX hangs. As a result we should immediately
6636 * determine if a hang has occurred.
6637 */
6638 static void ixgbe_check_hang_subtask(struct ixgbe_adapter *adapter)
6639 {
6640 struct ixgbe_hw *hw = &adapter->hw;
6641 u64 eics = 0;
6642 int i;
6643
6644 /* If we're down, removing or resetting, just bail */
6645 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
6646 test_bit(__IXGBE_REMOVING, &adapter->state) ||
6647 test_bit(__IXGBE_RESETTING, &adapter->state))
6648 return;
6649
6650 /* Force detection of hung controller */
6651 if (netif_carrier_ok(adapter->netdev)) {
6652 for (i = 0; i < adapter->num_tx_queues; i++)
6653 set_check_for_tx_hang(adapter->tx_ring[i]);
6654 }
6655
6656 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) {
6657 /*
6658 * for legacy and MSI interrupts don't set any bits
6659 * that are enabled for EIAM, because this operation
6660 * would set *both* EIMS and EICS for any bit in EIAM
6661 */
6662 IXGBE_WRITE_REG(hw, IXGBE_EICS,
6663 (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER));
6664 } else {
6665 /* get one bit for every active tx/rx interrupt vector */
6666 for (i = 0; i < adapter->num_q_vectors; i++) {
6667 struct ixgbe_q_vector *qv = adapter->q_vector[i];
6668 if (qv->rx.ring || qv->tx.ring)
6669 eics |= BIT_ULL(i);
6670 }
6671 }
6672
6673 /* Cause software interrupt to ensure rings are cleaned */
6674 ixgbe_irq_rearm_queues(adapter, eics);
6675 }
6676
6677 /**
6678 * ixgbe_watchdog_update_link - update the link status
6679 * @adapter: pointer to the device adapter structure
6680 * @link_speed: pointer to a u32 to store the link_speed
6681 **/
6682 static void ixgbe_watchdog_update_link(struct ixgbe_adapter *adapter)
6683 {
6684 struct ixgbe_hw *hw = &adapter->hw;
6685 u32 link_speed = adapter->link_speed;
6686 bool link_up = adapter->link_up;
6687 bool pfc_en = adapter->dcb_cfg.pfc_mode_enable;
6688
6689 if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE))
6690 return;
6691
6692 if (hw->mac.ops.check_link) {
6693 hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
6694 } else {
6695 /* always assume link is up, if no check link function */
6696 link_speed = IXGBE_LINK_SPEED_10GB_FULL;
6697 link_up = true;
6698 }
6699
6700 if (adapter->ixgbe_ieee_pfc)
6701 pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en);
6702
6703 if (link_up && !((adapter->flags & IXGBE_FLAG_DCB_ENABLED) && pfc_en)) {
6704 hw->mac.ops.fc_enable(hw);
6705 ixgbe_set_rx_drop_en(adapter);
6706 }
6707
6708 if (link_up ||
6709 time_after(jiffies, (adapter->link_check_timeout +
6710 IXGBE_TRY_LINK_TIMEOUT))) {
6711 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE;
6712 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMC_LSC);
6713 IXGBE_WRITE_FLUSH(hw);
6714 }
6715
6716 adapter->link_up = link_up;
6717 adapter->link_speed = link_speed;
6718 }
6719
6720 static void ixgbe_update_default_up(struct ixgbe_adapter *adapter)
6721 {
6722 #ifdef CONFIG_IXGBE_DCB
6723 struct net_device *netdev = adapter->netdev;
6724 struct dcb_app app = {
6725 .selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE,
6726 .protocol = 0,
6727 };
6728 u8 up = 0;
6729
6730 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE)
6731 up = dcb_ieee_getapp_mask(netdev, &app);
6732
6733 adapter->default_up = (up > 1) ? (ffs(up) - 1) : 0;
6734 #endif
6735 }
6736
6737 static int ixgbe_enable_macvlan(struct net_device *upper, void *data)
6738 {
6739 if (netif_is_macvlan(upper)) {
6740 struct macvlan_dev *vlan = netdev_priv(upper);
6741
6742 if (vlan->fwd_priv)
6743 netif_tx_wake_all_queues(upper);
6744 }
6745
6746 return 0;
6747 }
6748
6749 /**
6750 * ixgbe_watchdog_link_is_up - update netif_carrier status and
6751 * print link up message
6752 * @adapter: pointer to the device adapter structure
6753 **/
6754 static void ixgbe_watchdog_link_is_up(struct ixgbe_adapter *adapter)
6755 {
6756 struct net_device *netdev = adapter->netdev;
6757 struct ixgbe_hw *hw = &adapter->hw;
6758 u32 link_speed = adapter->link_speed;
6759 const char *speed_str;
6760 bool flow_rx, flow_tx;
6761
6762 /* only continue if link was previously down */
6763 if (netif_carrier_ok(netdev))
6764 return;
6765
6766 adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP;
6767
6768 switch (hw->mac.type) {
6769 case ixgbe_mac_82598EB: {
6770 u32 frctl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
6771 u32 rmcs = IXGBE_READ_REG(hw, IXGBE_RMCS);
6772 flow_rx = !!(frctl & IXGBE_FCTRL_RFCE);
6773 flow_tx = !!(rmcs & IXGBE_RMCS_TFCE_802_3X);
6774 }
6775 break;
6776 case ixgbe_mac_X540:
6777 case ixgbe_mac_X550:
6778 case ixgbe_mac_X550EM_x:
6779 case ixgbe_mac_x550em_a:
6780 case ixgbe_mac_82599EB: {
6781 u32 mflcn = IXGBE_READ_REG(hw, IXGBE_MFLCN);
6782 u32 fccfg = IXGBE_READ_REG(hw, IXGBE_FCCFG);
6783 flow_rx = !!(mflcn & IXGBE_MFLCN_RFCE);
6784 flow_tx = !!(fccfg & IXGBE_FCCFG_TFCE_802_3X);
6785 }
6786 break;
6787 default:
6788 flow_tx = false;
6789 flow_rx = false;
6790 break;
6791 }
6792
6793 adapter->last_rx_ptp_check = jiffies;
6794
6795 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state))
6796 ixgbe_ptp_start_cyclecounter(adapter);
6797
6798 switch (link_speed) {
6799 case IXGBE_LINK_SPEED_10GB_FULL:
6800 speed_str = "10 Gbps";
6801 break;
6802 case IXGBE_LINK_SPEED_2_5GB_FULL:
6803 speed_str = "2.5 Gbps";
6804 break;
6805 case IXGBE_LINK_SPEED_1GB_FULL:
6806 speed_str = "1 Gbps";
6807 break;
6808 case IXGBE_LINK_SPEED_100_FULL:
6809 speed_str = "100 Mbps";
6810 break;
6811 default:
6812 speed_str = "unknown speed";
6813 break;
6814 }
6815 e_info(drv, "NIC Link is Up %s, Flow Control: %s\n", speed_str,
6816 ((flow_rx && flow_tx) ? "RX/TX" :
6817 (flow_rx ? "RX" :
6818 (flow_tx ? "TX" : "None"))));
6819
6820 netif_carrier_on(netdev);
6821 ixgbe_check_vf_rate_limit(adapter);
6822
6823 /* enable transmits */
6824 netif_tx_wake_all_queues(adapter->netdev);
6825
6826 /* enable any upper devices */
6827 rtnl_lock();
6828 netdev_walk_all_upper_dev_rcu(adapter->netdev,
6829 ixgbe_enable_macvlan, NULL);
6830 rtnl_unlock();
6831
6832 /* update the default user priority for VFs */
6833 ixgbe_update_default_up(adapter);
6834
6835 /* ping all the active vfs to let them know link has changed */
6836 ixgbe_ping_all_vfs(adapter);
6837 }
6838
6839 /**
6840 * ixgbe_watchdog_link_is_down - update netif_carrier status and
6841 * print link down message
6842 * @adapter: pointer to the adapter structure
6843 **/
6844 static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter *adapter)
6845 {
6846 struct net_device *netdev = adapter->netdev;
6847 struct ixgbe_hw *hw = &adapter->hw;
6848
6849 adapter->link_up = false;
6850 adapter->link_speed = 0;
6851
6852 /* only continue if link was up previously */
6853 if (!netif_carrier_ok(netdev))
6854 return;
6855
6856 /* poll for SFP+ cable when link is down */
6857 if (ixgbe_is_sfp(hw) && hw->mac.type == ixgbe_mac_82598EB)
6858 adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP;
6859
6860 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state))
6861 ixgbe_ptp_start_cyclecounter(adapter);
6862
6863 e_info(drv, "NIC Link is Down\n");
6864 netif_carrier_off(netdev);
6865
6866 /* ping all the active vfs to let them know link has changed */
6867 ixgbe_ping_all_vfs(adapter);
6868 }
6869
6870 static bool ixgbe_ring_tx_pending(struct ixgbe_adapter *adapter)
6871 {
6872 int i;
6873
6874 for (i = 0; i < adapter->num_tx_queues; i++) {
6875 struct ixgbe_ring *tx_ring = adapter->tx_ring[i];
6876
6877 if (tx_ring->next_to_use != tx_ring->next_to_clean)
6878 return true;
6879 }
6880
6881 return false;
6882 }
6883
6884 static bool ixgbe_vf_tx_pending(struct ixgbe_adapter *adapter)
6885 {
6886 struct ixgbe_hw *hw = &adapter->hw;
6887 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ];
6888 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask);
6889
6890 int i, j;
6891
6892 if (!adapter->num_vfs)
6893 return false;
6894
6895 /* resetting the PF is only needed for MAC before X550 */
6896 if (hw->mac.type >= ixgbe_mac_X550)
6897 return false;
6898
6899 for (i = 0; i < adapter->num_vfs; i++) {
6900 for (j = 0; j < q_per_pool; j++) {
6901 u32 h, t;
6902
6903 h = IXGBE_READ_REG(hw, IXGBE_PVFTDHN(q_per_pool, i, j));
6904 t = IXGBE_READ_REG(hw, IXGBE_PVFTDTN(q_per_pool, i, j));
6905
6906 if (h != t)
6907 return true;
6908 }
6909 }
6910
6911 return false;
6912 }
6913
6914 /**
6915 * ixgbe_watchdog_flush_tx - flush queues on link down
6916 * @adapter: pointer to the device adapter structure
6917 **/
6918 static void ixgbe_watchdog_flush_tx(struct ixgbe_adapter *adapter)
6919 {
6920 if (!netif_carrier_ok(adapter->netdev)) {
6921 if (ixgbe_ring_tx_pending(adapter) ||
6922 ixgbe_vf_tx_pending(adapter)) {
6923 /* We've lost link, so the controller stops DMA,
6924 * but we've got queued Tx work that's never going
6925 * to get done, so reset controller to flush Tx.
6926 * (Do the reset outside of interrupt context).
6927 */
6928 e_warn(drv, "initiating reset to clear Tx work after link loss\n");
6929 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state);
6930 }
6931 }
6932 }
6933
6934 #ifdef CONFIG_PCI_IOV
6935 static inline void ixgbe_issue_vf_flr(struct ixgbe_adapter *adapter,
6936 struct pci_dev *vfdev)
6937 {
6938 if (!pci_wait_for_pending_transaction(vfdev))
6939 e_dev_warn("Issuing VFLR with pending transactions\n");
6940
6941 e_dev_err("Issuing VFLR for VF %s\n", pci_name(vfdev));
6942 pcie_capability_set_word(vfdev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_BCR_FLR);
6943
6944 msleep(100);
6945 }
6946
6947 static void ixgbe_check_for_bad_vf(struct ixgbe_adapter *adapter)
6948 {
6949 struct ixgbe_hw *hw = &adapter->hw;
6950 struct pci_dev *pdev = adapter->pdev;
6951 unsigned int vf;
6952 u32 gpc;
6953
6954 if (!(netif_carrier_ok(adapter->netdev)))
6955 return;
6956
6957 gpc = IXGBE_READ_REG(hw, IXGBE_TXDGPC);
6958 if (gpc) /* If incrementing then no need for the check below */
6959 return;
6960 /* Check to see if a bad DMA write target from an errant or
6961 * malicious VF has caused a PCIe error. If so then we can
6962 * issue a VFLR to the offending VF(s) and then resume without
6963 * requesting a full slot reset.
6964 */
6965
6966 if (!pdev)
6967 return;
6968
6969 /* check status reg for all VFs owned by this PF */
6970 for (vf = 0; vf < adapter->num_vfs; ++vf) {
6971 struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev;
6972 u16 status_reg;
6973
6974 if (!vfdev)
6975 continue;
6976 pci_read_config_word(vfdev, PCI_STATUS, &status_reg);
6977 if (status_reg != IXGBE_FAILED_READ_CFG_WORD &&
6978 status_reg & PCI_STATUS_REC_MASTER_ABORT)
6979 ixgbe_issue_vf_flr(adapter, vfdev);
6980 }
6981 }
6982
6983 static void ixgbe_spoof_check(struct ixgbe_adapter *adapter)
6984 {
6985 u32 ssvpc;
6986
6987 /* Do not perform spoof check for 82598 or if not in IOV mode */
6988 if (adapter->hw.mac.type == ixgbe_mac_82598EB ||
6989 adapter->num_vfs == 0)
6990 return;
6991
6992 ssvpc = IXGBE_READ_REG(&adapter->hw, IXGBE_SSVPC);
6993
6994 /*
6995 * ssvpc register is cleared on read, if zero then no
6996 * spoofed packets in the last interval.
6997 */
6998 if (!ssvpc)
6999 return;
7000
7001 e_warn(drv, "%u Spoofed packets detected\n", ssvpc);
7002 }
7003 #else
7004 static void ixgbe_spoof_check(struct ixgbe_adapter __always_unused *adapter)
7005 {
7006 }
7007
7008 static void
7009 ixgbe_check_for_bad_vf(struct ixgbe_adapter __always_unused *adapter)
7010 {
7011 }
7012 #endif /* CONFIG_PCI_IOV */
7013
7014
7015 /**
7016 * ixgbe_watchdog_subtask - check and bring link up
7017 * @adapter: pointer to the device adapter structure
7018 **/
7019 static void ixgbe_watchdog_subtask(struct ixgbe_adapter *adapter)
7020 {
7021 /* if interface is down, removing or resetting, do nothing */
7022 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
7023 test_bit(__IXGBE_REMOVING, &adapter->state) ||
7024 test_bit(__IXGBE_RESETTING, &adapter->state))
7025 return;
7026
7027 ixgbe_watchdog_update_link(adapter);
7028
7029 if (adapter->link_up)
7030 ixgbe_watchdog_link_is_up(adapter);
7031 else
7032 ixgbe_watchdog_link_is_down(adapter);
7033
7034 ixgbe_check_for_bad_vf(adapter);
7035 ixgbe_spoof_check(adapter);
7036 ixgbe_update_stats(adapter);
7037
7038 ixgbe_watchdog_flush_tx(adapter);
7039 }
7040
7041 /**
7042 * ixgbe_sfp_detection_subtask - poll for SFP+ cable
7043 * @adapter: the ixgbe adapter structure
7044 **/
7045 static void ixgbe_sfp_detection_subtask(struct ixgbe_adapter *adapter)
7046 {
7047 struct ixgbe_hw *hw = &adapter->hw;
7048 s32 err;
7049
7050 /* not searching for SFP so there is nothing to do here */
7051 if (!(adapter->flags2 & IXGBE_FLAG2_SEARCH_FOR_SFP) &&
7052 !(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET))
7053 return;
7054
7055 if (adapter->sfp_poll_time &&
7056 time_after(adapter->sfp_poll_time, jiffies))
7057 return; /* If not yet time to poll for SFP */
7058
7059 /* someone else is in init, wait until next service event */
7060 if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state))
7061 return;
7062
7063 adapter->sfp_poll_time = jiffies + IXGBE_SFP_POLL_JIFFIES - 1;
7064
7065 err = hw->phy.ops.identify_sfp(hw);
7066 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED)
7067 goto sfp_out;
7068
7069 if (err == IXGBE_ERR_SFP_NOT_PRESENT) {
7070 /* If no cable is present, then we need to reset
7071 * the next time we find a good cable. */
7072 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET;
7073 }
7074
7075 /* exit on error */
7076 if (err)
7077 goto sfp_out;
7078
7079 /* exit if reset not needed */
7080 if (!(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET))
7081 goto sfp_out;
7082
7083 adapter->flags2 &= ~IXGBE_FLAG2_SFP_NEEDS_RESET;
7084
7085 /*
7086 * A module may be identified correctly, but the EEPROM may not have
7087 * support for that module. setup_sfp() will fail in that case, so
7088 * we should not allow that module to load.
7089 */
7090 if (hw->mac.type == ixgbe_mac_82598EB)
7091 err = hw->phy.ops.reset(hw);
7092 else
7093 err = hw->mac.ops.setup_sfp(hw);
7094
7095 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED)
7096 goto sfp_out;
7097
7098 adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG;
7099 e_info(probe, "detected SFP+: %d\n", hw->phy.sfp_type);
7100
7101 sfp_out:
7102 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state);
7103
7104 if ((err == IXGBE_ERR_SFP_NOT_SUPPORTED) &&
7105 (adapter->netdev->reg_state == NETREG_REGISTERED)) {
7106 e_dev_err("failed to initialize because an unsupported "
7107 "SFP+ module type was detected.\n");
7108 e_dev_err("Reload the driver after installing a "
7109 "supported module.\n");
7110 unregister_netdev(adapter->netdev);
7111 }
7112 }
7113
7114 /**
7115 * ixgbe_sfp_link_config_subtask - set up link SFP after module install
7116 * @adapter: the ixgbe adapter structure
7117 **/
7118 static void ixgbe_sfp_link_config_subtask(struct ixgbe_adapter *adapter)
7119 {
7120 struct ixgbe_hw *hw = &adapter->hw;
7121 u32 speed;
7122 bool autoneg = false;
7123
7124 if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_CONFIG))
7125 return;
7126
7127 /* someone else is in init, wait until next service event */
7128 if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state))
7129 return;
7130
7131 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG;
7132
7133 speed = hw->phy.autoneg_advertised;
7134 if ((!speed) && (hw->mac.ops.get_link_capabilities)) {
7135 hw->mac.ops.get_link_capabilities(hw, &speed, &autoneg);
7136
7137 /* setup the highest link when no autoneg */
7138 if (!autoneg) {
7139 if (speed & IXGBE_LINK_SPEED_10GB_FULL)
7140 speed = IXGBE_LINK_SPEED_10GB_FULL;
7141 }
7142 }
7143
7144 if (hw->mac.ops.setup_link)
7145 hw->mac.ops.setup_link(hw, speed, true);
7146
7147 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
7148 adapter->link_check_timeout = jiffies;
7149 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state);
7150 }
7151
7152 /**
7153 * ixgbe_service_timer - Timer Call-back
7154 * @data: pointer to adapter cast into an unsigned long
7155 **/
7156 static void ixgbe_service_timer(unsigned long data)
7157 {
7158 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)data;
7159 unsigned long next_event_offset;
7160
7161 /* poll faster when waiting for link */
7162 if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE)
7163 next_event_offset = HZ / 10;
7164 else
7165 next_event_offset = HZ * 2;
7166
7167 /* Reset the timer */
7168 mod_timer(&adapter->service_timer, next_event_offset + jiffies);
7169
7170 ixgbe_service_event_schedule(adapter);
7171 }
7172
7173 static void ixgbe_phy_interrupt_subtask(struct ixgbe_adapter *adapter)
7174 {
7175 struct ixgbe_hw *hw = &adapter->hw;
7176 u32 status;
7177
7178 if (!(adapter->flags2 & IXGBE_FLAG2_PHY_INTERRUPT))
7179 return;
7180
7181 adapter->flags2 &= ~IXGBE_FLAG2_PHY_INTERRUPT;
7182
7183 if (!hw->phy.ops.handle_lasi)
7184 return;
7185
7186 status = hw->phy.ops.handle_lasi(&adapter->hw);
7187 if (status != IXGBE_ERR_OVERTEMP)
7188 return;
7189
7190 e_crit(drv, "%s\n", ixgbe_overheat_msg);
7191 }
7192
7193 static void ixgbe_reset_subtask(struct ixgbe_adapter *adapter)
7194 {
7195 if (!test_and_clear_bit(__IXGBE_RESET_REQUESTED, &adapter->state))
7196 return;
7197
7198 /* If we're already down, removing or resetting, just bail */
7199 if (test_bit(__IXGBE_DOWN, &adapter->state) ||
7200 test_bit(__IXGBE_REMOVING, &adapter->state) ||
7201 test_bit(__IXGBE_RESETTING, &adapter->state))
7202 return;
7203
7204 ixgbe_dump(adapter);
7205 netdev_err(adapter->netdev, "Reset adapter\n");
7206 adapter->tx_timeout_count++;
7207
7208 rtnl_lock();
7209 ixgbe_reinit_locked(adapter);
7210 rtnl_unlock();
7211 }
7212
7213 /**
7214 * ixgbe_service_task - manages and runs subtasks
7215 * @work: pointer to work_struct containing our data
7216 **/
7217 static void ixgbe_service_task(struct work_struct *work)
7218 {
7219 struct ixgbe_adapter *adapter = container_of(work,
7220 struct ixgbe_adapter,
7221 service_task);
7222 if (ixgbe_removed(adapter->hw.hw_addr)) {
7223 if (!test_bit(__IXGBE_DOWN, &adapter->state)) {
7224 rtnl_lock();
7225 ixgbe_down(adapter);
7226 rtnl_unlock();
7227 }
7228 ixgbe_service_event_complete(adapter);
7229 return;
7230 }
7231 if (adapter->flags2 & IXGBE_FLAG2_UDP_TUN_REREG_NEEDED) {
7232 rtnl_lock();
7233 adapter->flags2 &= ~IXGBE_FLAG2_UDP_TUN_REREG_NEEDED;
7234 udp_tunnel_get_rx_info(adapter->netdev);
7235 rtnl_unlock();
7236 }
7237 ixgbe_reset_subtask(adapter);
7238 ixgbe_phy_interrupt_subtask(adapter);
7239 ixgbe_sfp_detection_subtask(adapter);
7240 ixgbe_sfp_link_config_subtask(adapter);
7241 ixgbe_check_overtemp_subtask(adapter);
7242 ixgbe_watchdog_subtask(adapter);
7243 ixgbe_fdir_reinit_subtask(adapter);
7244 ixgbe_check_hang_subtask(adapter);
7245
7246 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) {
7247 ixgbe_ptp_overflow_check(adapter);
7248 ixgbe_ptp_rx_hang(adapter);
7249 }
7250
7251 ixgbe_service_event_complete(adapter);
7252 }
7253
7254 static int ixgbe_tso(struct ixgbe_ring *tx_ring,
7255 struct ixgbe_tx_buffer *first,
7256 u8 *hdr_len)
7257 {
7258 u32 vlan_macip_lens, type_tucmd, mss_l4len_idx;
7259 struct sk_buff *skb = first->skb;
7260 union {
7261 struct iphdr *v4;
7262 struct ipv6hdr *v6;
7263 unsigned char *hdr;
7264 } ip;
7265 union {
7266 struct tcphdr *tcp;
7267 unsigned char *hdr;
7268 } l4;
7269 u32 paylen, l4_offset;
7270 int err;
7271
7272 if (skb->ip_summed != CHECKSUM_PARTIAL)
7273 return 0;
7274
7275 if (!skb_is_gso(skb))
7276 return 0;
7277
7278 err = skb_cow_head(skb, 0);
7279 if (err < 0)
7280 return err;
7281
7282 ip.hdr = skb_network_header(skb);
7283 l4.hdr = skb_checksum_start(skb);
7284
7285 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
7286 type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_TCP;
7287
7288 /* initialize outer IP header fields */
7289 if (ip.v4->version == 4) {
7290 unsigned char *csum_start = skb_checksum_start(skb);
7291 unsigned char *trans_start = ip.hdr + (ip.v4->ihl * 4);
7292
7293 /* IP header will have to cancel out any data that
7294 * is not a part of the outer IP header
7295 */
7296 ip.v4->check = csum_fold(csum_partial(trans_start,
7297 csum_start - trans_start,
7298 0));
7299 type_tucmd |= IXGBE_ADVTXD_TUCMD_IPV4;
7300
7301 ip.v4->tot_len = 0;
7302 first->tx_flags |= IXGBE_TX_FLAGS_TSO |
7303 IXGBE_TX_FLAGS_CSUM |
7304 IXGBE_TX_FLAGS_IPV4;
7305 } else {
7306 ip.v6->payload_len = 0;
7307 first->tx_flags |= IXGBE_TX_FLAGS_TSO |
7308 IXGBE_TX_FLAGS_CSUM;
7309 }
7310
7311 /* determine offset of inner transport header */
7312 l4_offset = l4.hdr - skb->data;
7313
7314 /* compute length of segmentation header */
7315 *hdr_len = (l4.tcp->doff * 4) + l4_offset;
7316
7317 /* remove payload length from inner checksum */
7318 paylen = skb->len - l4_offset;
7319 csum_replace_by_diff(&l4.tcp->check, htonl(paylen));
7320
7321 /* update gso size and bytecount with header size */
7322 first->gso_segs = skb_shinfo(skb)->gso_segs;
7323 first->bytecount += (first->gso_segs - 1) * *hdr_len;
7324
7325 /* mss_l4len_id: use 0 as index for TSO */
7326 mss_l4len_idx = (*hdr_len - l4_offset) << IXGBE_ADVTXD_L4LEN_SHIFT;
7327 mss_l4len_idx |= skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT;
7328
7329 /* vlan_macip_lens: HEADLEN, MACLEN, VLAN tag */
7330 vlan_macip_lens = l4.hdr - ip.hdr;
7331 vlan_macip_lens |= (ip.hdr - skb->data) << IXGBE_ADVTXD_MACLEN_SHIFT;
7332 vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK;
7333
7334 ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, 0, type_tucmd,
7335 mss_l4len_idx);
7336
7337 return 1;
7338 }
7339
7340 static inline bool ixgbe_ipv6_csum_is_sctp(struct sk_buff *skb)
7341 {
7342 unsigned int offset = 0;
7343
7344 ipv6_find_hdr(skb, &offset, IPPROTO_SCTP, NULL, NULL);
7345
7346 return offset == skb_checksum_start_offset(skb);
7347 }
7348
7349 static void ixgbe_tx_csum(struct ixgbe_ring *tx_ring,
7350 struct ixgbe_tx_buffer *first)
7351 {
7352 struct sk_buff *skb = first->skb;
7353 u32 vlan_macip_lens = 0;
7354 u32 type_tucmd = 0;
7355
7356 if (skb->ip_summed != CHECKSUM_PARTIAL) {
7357 csum_failed:
7358 if (!(first->tx_flags & (IXGBE_TX_FLAGS_HW_VLAN |
7359 IXGBE_TX_FLAGS_CC)))
7360 return;
7361 goto no_csum;
7362 }
7363
7364 switch (skb->csum_offset) {
7365 case offsetof(struct tcphdr, check):
7366 type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_TCP;
7367 /* fall through */
7368 case offsetof(struct udphdr, check):
7369 break;
7370 case offsetof(struct sctphdr, checksum):
7371 /* validate that this is actually an SCTP request */
7372 if (((first->protocol == htons(ETH_P_IP)) &&
7373 (ip_hdr(skb)->protocol == IPPROTO_SCTP)) ||
7374 ((first->protocol == htons(ETH_P_IPV6)) &&
7375 ixgbe_ipv6_csum_is_sctp(skb))) {
7376 type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_SCTP;
7377 break;
7378 }
7379 /* fall through */
7380 default:
7381 skb_checksum_help(skb);
7382 goto csum_failed;
7383 }
7384
7385 /* update TX checksum flag */
7386 first->tx_flags |= IXGBE_TX_FLAGS_CSUM;
7387 vlan_macip_lens = skb_checksum_start_offset(skb) -
7388 skb_network_offset(skb);
7389 no_csum:
7390 /* vlan_macip_lens: MACLEN, VLAN tag */
7391 vlan_macip_lens |= skb_network_offset(skb) << IXGBE_ADVTXD_MACLEN_SHIFT;
7392 vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK;
7393
7394 ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, 0, type_tucmd, 0);
7395 }
7396
7397 #define IXGBE_SET_FLAG(_input, _flag, _result) \
7398 ((_flag <= _result) ? \
7399 ((u32)(_input & _flag) * (_result / _flag)) : \
7400 ((u32)(_input & _flag) / (_flag / _result)))
7401
7402 static u32 ixgbe_tx_cmd_type(struct sk_buff *skb, u32 tx_flags)
7403 {
7404 /* set type for advanced descriptor with frame checksum insertion */
7405 u32 cmd_type = IXGBE_ADVTXD_DTYP_DATA |
7406 IXGBE_ADVTXD_DCMD_DEXT |
7407 IXGBE_ADVTXD_DCMD_IFCS;
7408
7409 /* set HW vlan bit if vlan is present */
7410 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_HW_VLAN,
7411 IXGBE_ADVTXD_DCMD_VLE);
7412
7413 /* set segmentation enable bits for TSO/FSO */
7414 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_TSO,
7415 IXGBE_ADVTXD_DCMD_TSE);
7416
7417 /* set timestamp bit if present */
7418 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_TSTAMP,
7419 IXGBE_ADVTXD_MAC_TSTAMP);
7420
7421 /* insert frame checksum */
7422 cmd_type ^= IXGBE_SET_FLAG(skb->no_fcs, 1, IXGBE_ADVTXD_DCMD_IFCS);
7423
7424 return cmd_type;
7425 }
7426
7427 static void ixgbe_tx_olinfo_status(union ixgbe_adv_tx_desc *tx_desc,
7428 u32 tx_flags, unsigned int paylen)
7429 {
7430 u32 olinfo_status = paylen << IXGBE_ADVTXD_PAYLEN_SHIFT;
7431
7432 /* enable L4 checksum for TSO and TX checksum offload */
7433 olinfo_status |= IXGBE_SET_FLAG(tx_flags,
7434 IXGBE_TX_FLAGS_CSUM,
7435 IXGBE_ADVTXD_POPTS_TXSM);
7436
7437 /* enble IPv4 checksum for TSO */
7438 olinfo_status |= IXGBE_SET_FLAG(tx_flags,
7439 IXGBE_TX_FLAGS_IPV4,
7440 IXGBE_ADVTXD_POPTS_IXSM);
7441
7442 /*
7443 * Check Context must be set if Tx switch is enabled, which it
7444 * always is for case where virtual functions are running
7445 */
7446 olinfo_status |= IXGBE_SET_FLAG(tx_flags,
7447 IXGBE_TX_FLAGS_CC,
7448 IXGBE_ADVTXD_CC);
7449
7450 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status);
7451 }
7452
7453 static int __ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size)
7454 {
7455 netif_stop_subqueue(tx_ring->netdev, tx_ring->queue_index);
7456
7457 /* Herbert's original patch had:
7458 * smp_mb__after_netif_stop_queue();
7459 * but since that doesn't exist yet, just open code it.
7460 */
7461 smp_mb();
7462
7463 /* We need to check again in a case another CPU has just
7464 * made room available.
7465 */
7466 if (likely(ixgbe_desc_unused(tx_ring) < size))
7467 return -EBUSY;
7468
7469 /* A reprieve! - use start_queue because it doesn't call schedule */
7470 netif_start_subqueue(tx_ring->netdev, tx_ring->queue_index);
7471 ++tx_ring->tx_stats.restart_queue;
7472 return 0;
7473 }
7474
7475 static inline int ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size)
7476 {
7477 if (likely(ixgbe_desc_unused(tx_ring) >= size))
7478 return 0;
7479
7480 return __ixgbe_maybe_stop_tx(tx_ring, size);
7481 }
7482
7483 #define IXGBE_TXD_CMD (IXGBE_TXD_CMD_EOP | \
7484 IXGBE_TXD_CMD_RS)
7485
7486 static void ixgbe_tx_map(struct ixgbe_ring *tx_ring,
7487 struct ixgbe_tx_buffer *first,
7488 const u8 hdr_len)
7489 {
7490 struct sk_buff *skb = first->skb;
7491 struct ixgbe_tx_buffer *tx_buffer;
7492 union ixgbe_adv_tx_desc *tx_desc;
7493 struct skb_frag_struct *frag;
7494 dma_addr_t dma;
7495 unsigned int data_len, size;
7496 u32 tx_flags = first->tx_flags;
7497 u32 cmd_type = ixgbe_tx_cmd_type(skb, tx_flags);
7498 u16 i = tx_ring->next_to_use;
7499
7500 tx_desc = IXGBE_TX_DESC(tx_ring, i);
7501
7502 ixgbe_tx_olinfo_status(tx_desc, tx_flags, skb->len - hdr_len);
7503
7504 size = skb_headlen(skb);
7505 data_len = skb->data_len;
7506
7507 #ifdef IXGBE_FCOE
7508 if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
7509 if (data_len < sizeof(struct fcoe_crc_eof)) {
7510 size -= sizeof(struct fcoe_crc_eof) - data_len;
7511 data_len = 0;
7512 } else {
7513 data_len -= sizeof(struct fcoe_crc_eof);
7514 }
7515 }
7516
7517 #endif
7518 dma = dma_map_single(tx_ring->dev, skb->data, size, DMA_TO_DEVICE);
7519
7520 tx_buffer = first;
7521
7522 for (frag = &skb_shinfo(skb)->frags[0];; frag++) {
7523 if (dma_mapping_error(tx_ring->dev, dma))
7524 goto dma_error;
7525
7526 /* record length, and DMA address */
7527 dma_unmap_len_set(tx_buffer, len, size);
7528 dma_unmap_addr_set(tx_buffer, dma, dma);
7529
7530 tx_desc->read.buffer_addr = cpu_to_le64(dma);
7531
7532 while (unlikely(size > IXGBE_MAX_DATA_PER_TXD)) {
7533 tx_desc->read.cmd_type_len =
7534 cpu_to_le32(cmd_type ^ IXGBE_MAX_DATA_PER_TXD);
7535
7536 i++;
7537 tx_desc++;
7538 if (i == tx_ring->count) {
7539 tx_desc = IXGBE_TX_DESC(tx_ring, 0);
7540 i = 0;
7541 }
7542 tx_desc->read.olinfo_status = 0;
7543
7544 dma += IXGBE_MAX_DATA_PER_TXD;
7545 size -= IXGBE_MAX_DATA_PER_TXD;
7546
7547 tx_desc->read.buffer_addr = cpu_to_le64(dma);
7548 }
7549
7550 if (likely(!data_len))
7551 break;
7552
7553 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type ^ size);
7554
7555 i++;
7556 tx_desc++;
7557 if (i == tx_ring->count) {
7558 tx_desc = IXGBE_TX_DESC(tx_ring, 0);
7559 i = 0;
7560 }
7561 tx_desc->read.olinfo_status = 0;
7562
7563 #ifdef IXGBE_FCOE
7564 size = min_t(unsigned int, data_len, skb_frag_size(frag));
7565 #else
7566 size = skb_frag_size(frag);
7567 #endif
7568 data_len -= size;
7569
7570 dma = skb_frag_dma_map(tx_ring->dev, frag, 0, size,
7571 DMA_TO_DEVICE);
7572
7573 tx_buffer = &tx_ring->tx_buffer_info[i];
7574 }
7575
7576 /* write last descriptor with RS and EOP bits */
7577 cmd_type |= size | IXGBE_TXD_CMD;
7578 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type);
7579
7580 netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount);
7581
7582 /* set the timestamp */
7583 first->time_stamp = jiffies;
7584
7585 /*
7586 * Force memory writes to complete before letting h/w know there
7587 * are new descriptors to fetch. (Only applicable for weak-ordered
7588 * memory model archs, such as IA-64).
7589 *
7590 * We also need this memory barrier to make certain all of the
7591 * status bits have been updated before next_to_watch is written.
7592 */
7593 wmb();
7594
7595 /* set next_to_watch value indicating a packet is present */
7596 first->next_to_watch = tx_desc;
7597
7598 i++;
7599 if (i == tx_ring->count)
7600 i = 0;
7601
7602 tx_ring->next_to_use = i;
7603
7604 ixgbe_maybe_stop_tx(tx_ring, DESC_NEEDED);
7605
7606 if (netif_xmit_stopped(txring_txq(tx_ring)) || !skb->xmit_more) {
7607 writel(i, tx_ring->tail);
7608
7609 /* we need this if more than one processor can write to our tail
7610 * at a time, it synchronizes IO on IA64/Altix systems
7611 */
7612 mmiowb();
7613 }
7614
7615 return;
7616 dma_error:
7617 dev_err(tx_ring->dev, "TX DMA map failed\n");
7618
7619 /* clear dma mappings for failed tx_buffer_info map */
7620 for (;;) {
7621 tx_buffer = &tx_ring->tx_buffer_info[i];
7622 ixgbe_unmap_and_free_tx_resource(tx_ring, tx_buffer);
7623 if (tx_buffer == first)
7624 break;
7625 if (i == 0)
7626 i = tx_ring->count;
7627 i--;
7628 }
7629
7630 tx_ring->next_to_use = i;
7631 }
7632
7633 static void ixgbe_atr(struct ixgbe_ring *ring,
7634 struct ixgbe_tx_buffer *first)
7635 {
7636 struct ixgbe_q_vector *q_vector = ring->q_vector;
7637 union ixgbe_atr_hash_dword input = { .dword = 0 };
7638 union ixgbe_atr_hash_dword common = { .dword = 0 };
7639 union {
7640 unsigned char *network;
7641 struct iphdr *ipv4;
7642 struct ipv6hdr *ipv6;
7643 } hdr;
7644 struct tcphdr *th;
7645 unsigned int hlen;
7646 struct sk_buff *skb;
7647 __be16 vlan_id;
7648 int l4_proto;
7649
7650 /* if ring doesn't have a interrupt vector, cannot perform ATR */
7651 if (!q_vector)
7652 return;
7653
7654 /* do nothing if sampling is disabled */
7655 if (!ring->atr_sample_rate)
7656 return;
7657
7658 ring->atr_count++;
7659
7660 /* currently only IPv4/IPv6 with TCP is supported */
7661 if ((first->protocol != htons(ETH_P_IP)) &&
7662 (first->protocol != htons(ETH_P_IPV6)))
7663 return;
7664
7665 /* snag network header to get L4 type and address */
7666 skb = first->skb;
7667 hdr.network = skb_network_header(skb);
7668 if (unlikely(hdr.network <= skb->data))
7669 return;
7670 if (skb->encapsulation &&
7671 first->protocol == htons(ETH_P_IP) &&
7672 hdr.ipv4->protocol == IPPROTO_UDP) {
7673 struct ixgbe_adapter *adapter = q_vector->adapter;
7674
7675 if (unlikely(skb_tail_pointer(skb) < hdr.network +
7676 VXLAN_HEADROOM))
7677 return;
7678
7679 /* verify the port is recognized as VXLAN */
7680 if (adapter->vxlan_port &&
7681 udp_hdr(skb)->dest == adapter->vxlan_port)
7682 hdr.network = skb_inner_network_header(skb);
7683
7684 if (adapter->geneve_port &&
7685 udp_hdr(skb)->dest == adapter->geneve_port)
7686 hdr.network = skb_inner_network_header(skb);
7687 }
7688
7689 /* Make sure we have at least [minimum IPv4 header + TCP]
7690 * or [IPv6 header] bytes
7691 */
7692 if (unlikely(skb_tail_pointer(skb) < hdr.network + 40))
7693 return;
7694
7695 /* Currently only IPv4/IPv6 with TCP is supported */
7696 switch (hdr.ipv4->version) {
7697 case IPVERSION:
7698 /* access ihl as u8 to avoid unaligned access on ia64 */
7699 hlen = (hdr.network[0] & 0x0F) << 2;
7700 l4_proto = hdr.ipv4->protocol;
7701 break;
7702 case 6:
7703 hlen = hdr.network - skb->data;
7704 l4_proto = ipv6_find_hdr(skb, &hlen, IPPROTO_TCP, NULL, NULL);
7705 hlen -= hdr.network - skb->data;
7706 break;
7707 default:
7708 return;
7709 }
7710
7711 if (l4_proto != IPPROTO_TCP)
7712 return;
7713
7714 if (unlikely(skb_tail_pointer(skb) < hdr.network +
7715 hlen + sizeof(struct tcphdr)))
7716 return;
7717
7718 th = (struct tcphdr *)(hdr.network + hlen);
7719
7720 /* skip this packet since the socket is closing */
7721 if (th->fin)
7722 return;
7723
7724 /* sample on all syn packets or once every atr sample count */
7725 if (!th->syn && (ring->atr_count < ring->atr_sample_rate))
7726 return;
7727
7728 /* reset sample count */
7729 ring->atr_count = 0;
7730
7731 vlan_id = htons(first->tx_flags >> IXGBE_TX_FLAGS_VLAN_SHIFT);
7732
7733 /*
7734 * src and dst are inverted, think how the receiver sees them
7735 *
7736 * The input is broken into two sections, a non-compressed section
7737 * containing vm_pool, vlan_id, and flow_type. The rest of the data
7738 * is XORed together and stored in the compressed dword.
7739 */
7740 input.formatted.vlan_id = vlan_id;
7741
7742 /*
7743 * since src port and flex bytes occupy the same word XOR them together
7744 * and write the value to source port portion of compressed dword
7745 */
7746 if (first->tx_flags & (IXGBE_TX_FLAGS_SW_VLAN | IXGBE_TX_FLAGS_HW_VLAN))
7747 common.port.src ^= th->dest ^ htons(ETH_P_8021Q);
7748 else
7749 common.port.src ^= th->dest ^ first->protocol;
7750 common.port.dst ^= th->source;
7751
7752 switch (hdr.ipv4->version) {
7753 case IPVERSION:
7754 input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV4;
7755 common.ip ^= hdr.ipv4->saddr ^ hdr.ipv4->daddr;
7756 break;
7757 case 6:
7758 input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV6;
7759 common.ip ^= hdr.ipv6->saddr.s6_addr32[0] ^
7760 hdr.ipv6->saddr.s6_addr32[1] ^
7761 hdr.ipv6->saddr.s6_addr32[2] ^
7762 hdr.ipv6->saddr.s6_addr32[3] ^
7763 hdr.ipv6->daddr.s6_addr32[0] ^
7764 hdr.ipv6->daddr.s6_addr32[1] ^
7765 hdr.ipv6->daddr.s6_addr32[2] ^
7766 hdr.ipv6->daddr.s6_addr32[3];
7767 break;
7768 default:
7769 break;
7770 }
7771
7772 if (hdr.network != skb_network_header(skb))
7773 input.formatted.flow_type |= IXGBE_ATR_L4TYPE_TUNNEL_MASK;
7774
7775 /* This assumes the Rx queue and Tx queue are bound to the same CPU */
7776 ixgbe_fdir_add_signature_filter_82599(&q_vector->adapter->hw,
7777 input, common, ring->queue_index);
7778 }
7779
7780 static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb,
7781 void *accel_priv, select_queue_fallback_t fallback)
7782 {
7783 struct ixgbe_fwd_adapter *fwd_adapter = accel_priv;
7784 #ifdef IXGBE_FCOE
7785 struct ixgbe_adapter *adapter;
7786 struct ixgbe_ring_feature *f;
7787 int txq;
7788 #endif
7789
7790 if (fwd_adapter)
7791 return skb->queue_mapping + fwd_adapter->tx_base_queue;
7792
7793 #ifdef IXGBE_FCOE
7794
7795 /*
7796 * only execute the code below if protocol is FCoE
7797 * or FIP and we have FCoE enabled on the adapter
7798 */
7799 switch (vlan_get_protocol(skb)) {
7800 case htons(ETH_P_FCOE):
7801 case htons(ETH_P_FIP):
7802 adapter = netdev_priv(dev);
7803
7804 if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
7805 break;
7806 default:
7807 return fallback(dev, skb);
7808 }
7809
7810 f = &adapter->ring_feature[RING_F_FCOE];
7811
7812 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) :
7813 smp_processor_id();
7814
7815 while (txq >= f->indices)
7816 txq -= f->indices;
7817
7818 return txq + f->offset;
7819 #else
7820 return fallback(dev, skb);
7821 #endif
7822 }
7823
7824 netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb,
7825 struct ixgbe_adapter *adapter,
7826 struct ixgbe_ring *tx_ring)
7827 {
7828 struct ixgbe_tx_buffer *first;
7829 int tso;
7830 u32 tx_flags = 0;
7831 unsigned short f;
7832 u16 count = TXD_USE_COUNT(skb_headlen(skb));
7833 __be16 protocol = skb->protocol;
7834 u8 hdr_len = 0;
7835
7836 /*
7837 * need: 1 descriptor per page * PAGE_SIZE/IXGBE_MAX_DATA_PER_TXD,
7838 * + 1 desc for skb_headlen/IXGBE_MAX_DATA_PER_TXD,
7839 * + 2 desc gap to keep tail from touching head,
7840 * + 1 desc for context descriptor,
7841 * otherwise try next time
7842 */
7843 for (f = 0; f < skb_shinfo(skb)->nr_frags; f++)
7844 count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size);
7845
7846 if (ixgbe_maybe_stop_tx(tx_ring, count + 3)) {
7847 tx_ring->tx_stats.tx_busy++;
7848 return NETDEV_TX_BUSY;
7849 }
7850
7851 /* record the location of the first descriptor for this packet */
7852 first = &tx_ring->tx_buffer_info[tx_ring->next_to_use];
7853 first->skb = skb;
7854 first->bytecount = skb->len;
7855 first->gso_segs = 1;
7856
7857 /* if we have a HW VLAN tag being added default to the HW one */
7858 if (skb_vlan_tag_present(skb)) {
7859 tx_flags |= skb_vlan_tag_get(skb) << IXGBE_TX_FLAGS_VLAN_SHIFT;
7860 tx_flags |= IXGBE_TX_FLAGS_HW_VLAN;
7861 /* else if it is a SW VLAN check the next protocol and store the tag */
7862 } else if (protocol == htons(ETH_P_8021Q)) {
7863 struct vlan_hdr *vhdr, _vhdr;
7864 vhdr = skb_header_pointer(skb, ETH_HLEN, sizeof(_vhdr), &_vhdr);
7865 if (!vhdr)
7866 goto out_drop;
7867
7868 tx_flags |= ntohs(vhdr->h_vlan_TCI) <<
7869 IXGBE_TX_FLAGS_VLAN_SHIFT;
7870 tx_flags |= IXGBE_TX_FLAGS_SW_VLAN;
7871 }
7872 protocol = vlan_get_protocol(skb);
7873
7874 if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
7875 adapter->ptp_clock &&
7876 !test_and_set_bit_lock(__IXGBE_PTP_TX_IN_PROGRESS,
7877 &adapter->state)) {
7878 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
7879 tx_flags |= IXGBE_TX_FLAGS_TSTAMP;
7880
7881 /* schedule check for Tx timestamp */
7882 adapter->ptp_tx_skb = skb_get(skb);
7883 adapter->ptp_tx_start = jiffies;
7884 schedule_work(&adapter->ptp_tx_work);
7885 }
7886
7887 skb_tx_timestamp(skb);
7888
7889 #ifdef CONFIG_PCI_IOV
7890 /*
7891 * Use the l2switch_enable flag - would be false if the DMA
7892 * Tx switch had been disabled.
7893 */
7894 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)
7895 tx_flags |= IXGBE_TX_FLAGS_CC;
7896
7897 #endif
7898 /* DCB maps skb priorities 0-7 onto 3 bit PCP of VLAN tag. */
7899 if ((adapter->flags & IXGBE_FLAG_DCB_ENABLED) &&
7900 ((tx_flags & (IXGBE_TX_FLAGS_HW_VLAN | IXGBE_TX_FLAGS_SW_VLAN)) ||
7901 (skb->priority != TC_PRIO_CONTROL))) {
7902 tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK;
7903 tx_flags |= (skb->priority & 0x7) <<
7904 IXGBE_TX_FLAGS_VLAN_PRIO_SHIFT;
7905 if (tx_flags & IXGBE_TX_FLAGS_SW_VLAN) {
7906 struct vlan_ethhdr *vhdr;
7907
7908 if (skb_cow_head(skb, 0))
7909 goto out_drop;
7910 vhdr = (struct vlan_ethhdr *)skb->data;
7911 vhdr->h_vlan_TCI = htons(tx_flags >>
7912 IXGBE_TX_FLAGS_VLAN_SHIFT);
7913 } else {
7914 tx_flags |= IXGBE_TX_FLAGS_HW_VLAN;
7915 }
7916 }
7917
7918 /* record initial flags and protocol */
7919 first->tx_flags = tx_flags;
7920 first->protocol = protocol;
7921
7922 #ifdef IXGBE_FCOE
7923 /* setup tx offload for FCoE */
7924 if ((protocol == htons(ETH_P_FCOE)) &&
7925 (tx_ring->netdev->features & (NETIF_F_FSO | NETIF_F_FCOE_CRC))) {
7926 tso = ixgbe_fso(tx_ring, first, &hdr_len);
7927 if (tso < 0)
7928 goto out_drop;
7929
7930 goto xmit_fcoe;
7931 }
7932
7933 #endif /* IXGBE_FCOE */
7934 tso = ixgbe_tso(tx_ring, first, &hdr_len);
7935 if (tso < 0)
7936 goto out_drop;
7937 else if (!tso)
7938 ixgbe_tx_csum(tx_ring, first);
7939
7940 /* add the ATR filter if ATR is on */
7941 if (test_bit(__IXGBE_TX_FDIR_INIT_DONE, &tx_ring->state))
7942 ixgbe_atr(tx_ring, first);
7943
7944 #ifdef IXGBE_FCOE
7945 xmit_fcoe:
7946 #endif /* IXGBE_FCOE */
7947 ixgbe_tx_map(tx_ring, first, hdr_len);
7948
7949 return NETDEV_TX_OK;
7950
7951 out_drop:
7952 dev_kfree_skb_any(first->skb);
7953 first->skb = NULL;
7954
7955 return NETDEV_TX_OK;
7956 }
7957
7958 static netdev_tx_t __ixgbe_xmit_frame(struct sk_buff *skb,
7959 struct net_device *netdev,
7960 struct ixgbe_ring *ring)
7961 {
7962 struct ixgbe_adapter *adapter = netdev_priv(netdev);
7963 struct ixgbe_ring *tx_ring;
7964
7965 /*
7966 * The minimum packet size for olinfo paylen is 17 so pad the skb
7967 * in order to meet this minimum size requirement.
7968 */
7969 if (skb_put_padto(skb, 17))
7970 return NETDEV_TX_OK;
7971
7972 tx_ring = ring ? ring : adapter->tx_ring[skb->queue_mapping];
7973
7974 return ixgbe_xmit_frame_ring(skb, adapter, tx_ring);
7975 }
7976
7977 static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb,
7978 struct net_device *netdev)
7979 {
7980 return __ixgbe_xmit_frame(skb, netdev, NULL);
7981 }
7982
7983 /**
7984 * ixgbe_set_mac - Change the Ethernet Address of the NIC
7985 * @netdev: network interface device structure
7986 * @p: pointer to an address structure
7987 *
7988 * Returns 0 on success, negative on failure
7989 **/
7990 static int ixgbe_set_mac(struct net_device *netdev, void *p)
7991 {
7992 struct ixgbe_adapter *adapter = netdev_priv(netdev);
7993 struct ixgbe_hw *hw = &adapter->hw;
7994 struct sockaddr *addr = p;
7995
7996 if (!is_valid_ether_addr(addr->sa_data))
7997 return -EADDRNOTAVAIL;
7998
7999 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
8000 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len);
8001
8002 ixgbe_mac_set_default_filter(adapter);
8003
8004 return 0;
8005 }
8006
8007 static int
8008 ixgbe_mdio_read(struct net_device *netdev, int prtad, int devad, u16 addr)
8009 {
8010 struct ixgbe_adapter *adapter = netdev_priv(netdev);
8011 struct ixgbe_hw *hw = &adapter->hw;
8012 u16 value;
8013 int rc;
8014
8015 if (prtad != hw->phy.mdio.prtad)
8016 return -EINVAL;
8017 rc = hw->phy.ops.read_reg(hw, addr, devad, &value);
8018 if (!rc)
8019 rc = value;
8020 return rc;
8021 }
8022
8023 static int ixgbe_mdio_write(struct net_device *netdev, int prtad, int devad,
8024 u16 addr, u16 value)
8025 {
8026 struct ixgbe_adapter *adapter = netdev_priv(netdev);
8027 struct ixgbe_hw *hw = &adapter->hw;
8028
8029 if (prtad != hw->phy.mdio.prtad)
8030 return -EINVAL;
8031 return hw->phy.ops.write_reg(hw, addr, devad, value);
8032 }
8033
8034 static int ixgbe_ioctl(struct net_device *netdev, struct ifreq *req, int cmd)
8035 {
8036 struct ixgbe_adapter *adapter = netdev_priv(netdev);
8037
8038 switch (cmd) {
8039 case SIOCSHWTSTAMP:
8040 return ixgbe_ptp_set_ts_config(adapter, req);
8041 case SIOCGHWTSTAMP:
8042 return ixgbe_ptp_get_ts_config(adapter, req);
8043 default:
8044 return mdio_mii_ioctl(&adapter->hw.phy.mdio, if_mii(req), cmd);
8045 }
8046 }
8047
8048 /**
8049 * ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding
8050 * netdev->dev_addrs
8051 * @netdev: network interface device structure
8052 *
8053 * Returns non-zero on failure
8054 **/
8055 static int ixgbe_add_sanmac_netdev(struct net_device *dev)
8056 {
8057 int err = 0;
8058 struct ixgbe_adapter *adapter = netdev_priv(dev);
8059 struct ixgbe_hw *hw = &adapter->hw;
8060
8061 if (is_valid_ether_addr(hw->mac.san_addr)) {
8062 rtnl_lock();
8063 err = dev_addr_add(dev, hw->mac.san_addr, NETDEV_HW_ADDR_T_SAN);
8064 rtnl_unlock();
8065
8066 /* update SAN MAC vmdq pool selection */
8067 hw->mac.ops.set_vmdq_san_mac(hw, VMDQ_P(0));
8068 }
8069 return err;
8070 }
8071
8072 /**
8073 * ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding
8074 * netdev->dev_addrs
8075 * @netdev: network interface device structure
8076 *
8077 * Returns non-zero on failure
8078 **/
8079 static int ixgbe_del_sanmac_netdev(struct net_device *dev)
8080 {
8081 int err = 0;
8082 struct ixgbe_adapter *adapter = netdev_priv(dev);
8083 struct ixgbe_mac_info *mac = &adapter->hw.mac;
8084
8085 if (is_valid_ether_addr(mac->san_addr)) {
8086 rtnl_lock();
8087 err = dev_addr_del(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN);
8088 rtnl_unlock();
8089 }
8090 return err;
8091 }
8092
8093 #ifdef CONFIG_NET_POLL_CONTROLLER
8094 /*
8095 * Polling 'interrupt' - used by things like netconsole to send skbs
8096 * without having to re-enable interrupts. It's not called while
8097 * the interrupt routine is executing.
8098 */
8099 static void ixgbe_netpoll(struct net_device *netdev)
8100 {
8101 struct ixgbe_adapter *adapter = netdev_priv(netdev);
8102 int i;
8103
8104 /* if interface is down do nothing */
8105 if (test_bit(__IXGBE_DOWN, &adapter->state))
8106 return;
8107
8108 /* loop through and schedule all active queues */
8109 for (i = 0; i < adapter->num_q_vectors; i++)
8110 ixgbe_msix_clean_rings(0, adapter->q_vector[i]);
8111 }
8112
8113 #endif
8114 static struct rtnl_link_stats64 *ixgbe_get_stats64(struct net_device *netdev,
8115 struct rtnl_link_stats64 *stats)
8116 {
8117 struct ixgbe_adapter *adapter = netdev_priv(netdev);
8118 int i;
8119
8120 rcu_read_lock();
8121 for (i = 0; i < adapter->num_rx_queues; i++) {
8122 struct ixgbe_ring *ring = ACCESS_ONCE(adapter->rx_ring[i]);
8123 u64 bytes, packets;
8124 unsigned int start;
8125
8126 if (ring) {
8127 do {
8128 start = u64_stats_fetch_begin_irq(&ring->syncp);
8129 packets = ring->stats.packets;
8130 bytes = ring->stats.bytes;
8131 } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
8132 stats->rx_packets += packets;
8133 stats->rx_bytes += bytes;
8134 }
8135 }
8136
8137 for (i = 0; i < adapter->num_tx_queues; i++) {
8138 struct ixgbe_ring *ring = ACCESS_ONCE(adapter->tx_ring[i]);
8139 u64 bytes, packets;
8140 unsigned int start;
8141
8142 if (ring) {
8143 do {
8144 start = u64_stats_fetch_begin_irq(&ring->syncp);
8145 packets = ring->stats.packets;
8146 bytes = ring->stats.bytes;
8147 } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
8148 stats->tx_packets += packets;
8149 stats->tx_bytes += bytes;
8150 }
8151 }
8152 rcu_read_unlock();
8153 /* following stats updated by ixgbe_watchdog_task() */
8154 stats->multicast = netdev->stats.multicast;
8155 stats->rx_errors = netdev->stats.rx_errors;
8156 stats->rx_length_errors = netdev->stats.rx_length_errors;
8157 stats->rx_crc_errors = netdev->stats.rx_crc_errors;
8158 stats->rx_missed_errors = netdev->stats.rx_missed_errors;
8159 return stats;
8160 }
8161
8162 #ifdef CONFIG_IXGBE_DCB
8163 /**
8164 * ixgbe_validate_rtr - verify 802.1Qp to Rx packet buffer mapping is valid.
8165 * @adapter: pointer to ixgbe_adapter
8166 * @tc: number of traffic classes currently enabled
8167 *
8168 * Configure a valid 802.1Qp to Rx packet buffer mapping ie confirm
8169 * 802.1Q priority maps to a packet buffer that exists.
8170 */
8171 static void ixgbe_validate_rtr(struct ixgbe_adapter *adapter, u8 tc)
8172 {
8173 struct ixgbe_hw *hw = &adapter->hw;
8174 u32 reg, rsave;
8175 int i;
8176
8177 /* 82598 have a static priority to TC mapping that can not
8178 * be changed so no validation is needed.
8179 */
8180 if (hw->mac.type == ixgbe_mac_82598EB)
8181 return;
8182
8183 reg = IXGBE_READ_REG(hw, IXGBE_RTRUP2TC);
8184 rsave = reg;
8185
8186 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
8187 u8 up2tc = reg >> (i * IXGBE_RTRUP2TC_UP_SHIFT);
8188
8189 /* If up2tc is out of bounds default to zero */
8190 if (up2tc > tc)
8191 reg &= ~(0x7 << IXGBE_RTRUP2TC_UP_SHIFT);
8192 }
8193
8194 if (reg != rsave)
8195 IXGBE_WRITE_REG(hw, IXGBE_RTRUP2TC, reg);
8196
8197 return;
8198 }
8199
8200 /**
8201 * ixgbe_set_prio_tc_map - Configure netdev prio tc map
8202 * @adapter: Pointer to adapter struct
8203 *
8204 * Populate the netdev user priority to tc map
8205 */
8206 static void ixgbe_set_prio_tc_map(struct ixgbe_adapter *adapter)
8207 {
8208 struct net_device *dev = adapter->netdev;
8209 struct ixgbe_dcb_config *dcb_cfg = &adapter->dcb_cfg;
8210 struct ieee_ets *ets = adapter->ixgbe_ieee_ets;
8211 u8 prio;
8212
8213 for (prio = 0; prio < MAX_USER_PRIORITY; prio++) {
8214 u8 tc = 0;
8215
8216 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE)
8217 tc = ixgbe_dcb_get_tc_from_up(dcb_cfg, 0, prio);
8218 else if (ets)
8219 tc = ets->prio_tc[prio];
8220
8221 netdev_set_prio_tc_map(dev, prio, tc);
8222 }
8223 }
8224
8225 #endif /* CONFIG_IXGBE_DCB */
8226 /**
8227 * ixgbe_setup_tc - configure net_device for multiple traffic classes
8228 *
8229 * @netdev: net device to configure
8230 * @tc: number of traffic classes to enable
8231 */
8232 int ixgbe_setup_tc(struct net_device *dev, u8 tc)
8233 {
8234 struct ixgbe_adapter *adapter = netdev_priv(dev);
8235 struct ixgbe_hw *hw = &adapter->hw;
8236 bool pools;
8237
8238 /* Hardware supports up to 8 traffic classes */
8239 if (tc > adapter->dcb_cfg.num_tcs.pg_tcs)
8240 return -EINVAL;
8241
8242 if (hw->mac.type == ixgbe_mac_82598EB && tc && tc < MAX_TRAFFIC_CLASS)
8243 return -EINVAL;
8244
8245 pools = (find_first_zero_bit(&adapter->fwd_bitmask, 32) > 1);
8246 if (tc && pools && adapter->num_rx_pools > IXGBE_MAX_DCBMACVLANS)
8247 return -EBUSY;
8248
8249 /* Hardware has to reinitialize queues and interrupts to
8250 * match packet buffer alignment. Unfortunately, the
8251 * hardware is not flexible enough to do this dynamically.
8252 */
8253 if (netif_running(dev))
8254 ixgbe_close(dev);
8255 else
8256 ixgbe_reset(adapter);
8257
8258 ixgbe_clear_interrupt_scheme(adapter);
8259
8260 #ifdef CONFIG_IXGBE_DCB
8261 if (tc) {
8262 netdev_set_num_tc(dev, tc);
8263 ixgbe_set_prio_tc_map(adapter);
8264
8265 adapter->flags |= IXGBE_FLAG_DCB_ENABLED;
8266
8267 if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
8268 adapter->last_lfc_mode = adapter->hw.fc.requested_mode;
8269 adapter->hw.fc.requested_mode = ixgbe_fc_none;
8270 }
8271 } else {
8272 netdev_reset_tc(dev);
8273
8274 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
8275 adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
8276
8277 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
8278
8279 adapter->temp_dcb_cfg.pfc_mode_enable = false;
8280 adapter->dcb_cfg.pfc_mode_enable = false;
8281 }
8282
8283 ixgbe_validate_rtr(adapter, tc);
8284
8285 #endif /* CONFIG_IXGBE_DCB */
8286 ixgbe_init_interrupt_scheme(adapter);
8287
8288 if (netif_running(dev))
8289 return ixgbe_open(dev);
8290
8291 return 0;
8292 }
8293
8294 static int ixgbe_delete_clsu32(struct ixgbe_adapter *adapter,
8295 struct tc_cls_u32_offload *cls)
8296 {
8297 u32 hdl = cls->knode.handle;
8298 u32 uhtid = TC_U32_USERHTID(cls->knode.handle);
8299 u32 loc = cls->knode.handle & 0xfffff;
8300 int err = 0, i, j;
8301 struct ixgbe_jump_table *jump = NULL;
8302
8303 if (loc > IXGBE_MAX_HW_ENTRIES)
8304 return -EINVAL;
8305
8306 if ((uhtid != 0x800) && (uhtid >= IXGBE_MAX_LINK_HANDLE))
8307 return -EINVAL;
8308
8309 /* Clear this filter in the link data it is associated with */
8310 if (uhtid != 0x800) {
8311 jump = adapter->jump_tables[uhtid];
8312 if (!jump)
8313 return -EINVAL;
8314 if (!test_bit(loc - 1, jump->child_loc_map))
8315 return -EINVAL;
8316 clear_bit(loc - 1, jump->child_loc_map);
8317 }
8318
8319 /* Check if the filter being deleted is a link */
8320 for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++) {
8321 jump = adapter->jump_tables[i];
8322 if (jump && jump->link_hdl == hdl) {
8323 /* Delete filters in the hardware in the child hash
8324 * table associated with this link
8325 */
8326 for (j = 0; j < IXGBE_MAX_HW_ENTRIES; j++) {
8327 if (!test_bit(j, jump->child_loc_map))
8328 continue;
8329 spin_lock(&adapter->fdir_perfect_lock);
8330 err = ixgbe_update_ethtool_fdir_entry(adapter,
8331 NULL,
8332 j + 1);
8333 spin_unlock(&adapter->fdir_perfect_lock);
8334 clear_bit(j, jump->child_loc_map);
8335 }
8336 /* Remove resources for this link */
8337 kfree(jump->input);
8338 kfree(jump->mask);
8339 kfree(jump);
8340 adapter->jump_tables[i] = NULL;
8341 return err;
8342 }
8343 }
8344
8345 spin_lock(&adapter->fdir_perfect_lock);
8346 err = ixgbe_update_ethtool_fdir_entry(adapter, NULL, loc);
8347 spin_unlock(&adapter->fdir_perfect_lock);
8348 return err;
8349 }
8350
8351 static int ixgbe_configure_clsu32_add_hnode(struct ixgbe_adapter *adapter,
8352 __be16 protocol,
8353 struct tc_cls_u32_offload *cls)
8354 {
8355 u32 uhtid = TC_U32_USERHTID(cls->hnode.handle);
8356
8357 if (uhtid >= IXGBE_MAX_LINK_HANDLE)
8358 return -EINVAL;
8359
8360 /* This ixgbe devices do not support hash tables at the moment
8361 * so abort when given hash tables.
8362 */
8363 if (cls->hnode.divisor > 0)
8364 return -EINVAL;
8365
8366 set_bit(uhtid - 1, &adapter->tables);
8367 return 0;
8368 }
8369
8370 static int ixgbe_configure_clsu32_del_hnode(struct ixgbe_adapter *adapter,
8371 struct tc_cls_u32_offload *cls)
8372 {
8373 u32 uhtid = TC_U32_USERHTID(cls->hnode.handle);
8374
8375 if (uhtid >= IXGBE_MAX_LINK_HANDLE)
8376 return -EINVAL;
8377
8378 clear_bit(uhtid - 1, &adapter->tables);
8379 return 0;
8380 }
8381
8382 #ifdef CONFIG_NET_CLS_ACT
8383 struct upper_walk_data {
8384 struct ixgbe_adapter *adapter;
8385 u64 action;
8386 int ifindex;
8387 u8 queue;
8388 };
8389
8390 static int get_macvlan_queue(struct net_device *upper, void *_data)
8391 {
8392 if (netif_is_macvlan(upper)) {
8393 struct macvlan_dev *dfwd = netdev_priv(upper);
8394 struct ixgbe_fwd_adapter *vadapter = dfwd->fwd_priv;
8395 struct upper_walk_data *data = _data;
8396 struct ixgbe_adapter *adapter = data->adapter;
8397 int ifindex = data->ifindex;
8398
8399 if (vadapter && vadapter->netdev->ifindex == ifindex) {
8400 data->queue = adapter->rx_ring[vadapter->rx_base_queue]->reg_idx;
8401 data->action = data->queue;
8402 return 1;
8403 }
8404 }
8405
8406 return 0;
8407 }
8408
8409 static int handle_redirect_action(struct ixgbe_adapter *adapter, int ifindex,
8410 u8 *queue, u64 *action)
8411 {
8412 unsigned int num_vfs = adapter->num_vfs, vf;
8413 struct upper_walk_data data;
8414 struct net_device *upper;
8415
8416 /* redirect to a SRIOV VF */
8417 for (vf = 0; vf < num_vfs; ++vf) {
8418 upper = pci_get_drvdata(adapter->vfinfo[vf].vfdev);
8419 if (upper->ifindex == ifindex) {
8420 if (adapter->num_rx_pools > 1)
8421 *queue = vf * 2;
8422 else
8423 *queue = vf * adapter->num_rx_queues_per_pool;
8424
8425 *action = vf + 1;
8426 *action <<= ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF;
8427 return 0;
8428 }
8429 }
8430
8431 /* redirect to a offloaded macvlan netdev */
8432 data.adapter = adapter;
8433 data.ifindex = ifindex;
8434 data.action = 0;
8435 data.queue = 0;
8436 if (netdev_walk_all_upper_dev_rcu(adapter->netdev,
8437 get_macvlan_queue, &data)) {
8438 *action = data.action;
8439 *queue = data.queue;
8440
8441 return 0;
8442 }
8443
8444 return -EINVAL;
8445 }
8446
8447 static int parse_tc_actions(struct ixgbe_adapter *adapter,
8448 struct tcf_exts *exts, u64 *action, u8 *queue)
8449 {
8450 const struct tc_action *a;
8451 LIST_HEAD(actions);
8452 int err;
8453
8454 if (tc_no_actions(exts))
8455 return -EINVAL;
8456
8457 tcf_exts_to_list(exts, &actions);
8458 list_for_each_entry(a, &actions, list) {
8459
8460 /* Drop action */
8461 if (is_tcf_gact_shot(a)) {
8462 *action = IXGBE_FDIR_DROP_QUEUE;
8463 *queue = IXGBE_FDIR_DROP_QUEUE;
8464 return 0;
8465 }
8466
8467 /* Redirect to a VF or a offloaded macvlan */
8468 if (is_tcf_mirred_egress_redirect(a)) {
8469 int ifindex = tcf_mirred_ifindex(a);
8470
8471 err = handle_redirect_action(adapter, ifindex, queue,
8472 action);
8473 if (err == 0)
8474 return err;
8475 }
8476 }
8477
8478 return -EINVAL;
8479 }
8480 #else
8481 static int parse_tc_actions(struct ixgbe_adapter *adapter,
8482 struct tcf_exts *exts, u64 *action, u8 *queue)
8483 {
8484 return -EINVAL;
8485 }
8486 #endif /* CONFIG_NET_CLS_ACT */
8487
8488 static int ixgbe_clsu32_build_input(struct ixgbe_fdir_filter *input,
8489 union ixgbe_atr_input *mask,
8490 struct tc_cls_u32_offload *cls,
8491 struct ixgbe_mat_field *field_ptr,
8492 struct ixgbe_nexthdr *nexthdr)
8493 {
8494 int i, j, off;
8495 __be32 val, m;
8496 bool found_entry = false, found_jump_field = false;
8497
8498 for (i = 0; i < cls->knode.sel->nkeys; i++) {
8499 off = cls->knode.sel->keys[i].off;
8500 val = cls->knode.sel->keys[i].val;
8501 m = cls->knode.sel->keys[i].mask;
8502
8503 for (j = 0; field_ptr[j].val; j++) {
8504 if (field_ptr[j].off == off) {
8505 field_ptr[j].val(input, mask, val, m);
8506 input->filter.formatted.flow_type |=
8507 field_ptr[j].type;
8508 found_entry = true;
8509 break;
8510 }
8511 }
8512 if (nexthdr) {
8513 if (nexthdr->off == cls->knode.sel->keys[i].off &&
8514 nexthdr->val == cls->knode.sel->keys[i].val &&
8515 nexthdr->mask == cls->knode.sel->keys[i].mask)
8516 found_jump_field = true;
8517 else
8518 continue;
8519 }
8520 }
8521
8522 if (nexthdr && !found_jump_field)
8523 return -EINVAL;
8524
8525 if (!found_entry)
8526 return 0;
8527
8528 mask->formatted.flow_type = IXGBE_ATR_L4TYPE_IPV6_MASK |
8529 IXGBE_ATR_L4TYPE_MASK;
8530
8531 if (input->filter.formatted.flow_type == IXGBE_ATR_FLOW_TYPE_IPV4)
8532 mask->formatted.flow_type &= IXGBE_ATR_L4TYPE_IPV6_MASK;
8533
8534 return 0;
8535 }
8536
8537 static int ixgbe_configure_clsu32(struct ixgbe_adapter *adapter,
8538 __be16 protocol,
8539 struct tc_cls_u32_offload *cls)
8540 {
8541 u32 loc = cls->knode.handle & 0xfffff;
8542 struct ixgbe_hw *hw = &adapter->hw;
8543 struct ixgbe_mat_field *field_ptr;
8544 struct ixgbe_fdir_filter *input = NULL;
8545 union ixgbe_atr_input *mask = NULL;
8546 struct ixgbe_jump_table *jump = NULL;
8547 int i, err = -EINVAL;
8548 u8 queue;
8549 u32 uhtid, link_uhtid;
8550
8551 uhtid = TC_U32_USERHTID(cls->knode.handle);
8552 link_uhtid = TC_U32_USERHTID(cls->knode.link_handle);
8553
8554 /* At the moment cls_u32 jumps to network layer and skips past
8555 * L2 headers. The canonical method to match L2 frames is to use
8556 * negative values. However this is error prone at best but really
8557 * just broken because there is no way to "know" what sort of hdr
8558 * is in front of the network layer. Fix cls_u32 to support L2
8559 * headers when needed.
8560 */
8561 if (protocol != htons(ETH_P_IP))
8562 return err;
8563
8564 if (loc >= ((1024 << adapter->fdir_pballoc) - 2)) {
8565 e_err(drv, "Location out of range\n");
8566 return err;
8567 }
8568
8569 /* cls u32 is a graph starting at root node 0x800. The driver tracks
8570 * links and also the fields used to advance the parser across each
8571 * link (e.g. nexthdr/eat parameters from 'tc'). This way we can map
8572 * the u32 graph onto the hardware parse graph denoted in ixgbe_model.h
8573 * To add support for new nodes update ixgbe_model.h parse structures
8574 * this function _should_ be generic try not to hardcode values here.
8575 */
8576 if (uhtid == 0x800) {
8577 field_ptr = (adapter->jump_tables[0])->mat;
8578 } else {
8579 if (uhtid >= IXGBE_MAX_LINK_HANDLE)
8580 return err;
8581 if (!adapter->jump_tables[uhtid])
8582 return err;
8583 field_ptr = (adapter->jump_tables[uhtid])->mat;
8584 }
8585
8586 if (!field_ptr)
8587 return err;
8588
8589 /* At this point we know the field_ptr is valid and need to either
8590 * build cls_u32 link or attach filter. Because adding a link to
8591 * a handle that does not exist is invalid and the same for adding
8592 * rules to handles that don't exist.
8593 */
8594
8595 if (link_uhtid) {
8596 struct ixgbe_nexthdr *nexthdr = ixgbe_ipv4_jumps;
8597
8598 if (link_uhtid >= IXGBE_MAX_LINK_HANDLE)
8599 return err;
8600
8601 if (!test_bit(link_uhtid - 1, &adapter->tables))
8602 return err;
8603
8604 /* Multiple filters as links to the same hash table are not
8605 * supported. To add a new filter with the same next header
8606 * but different match/jump conditions, create a new hash table
8607 * and link to it.
8608 */
8609 if (adapter->jump_tables[link_uhtid] &&
8610 (adapter->jump_tables[link_uhtid])->link_hdl) {
8611 e_err(drv, "Link filter exists for link: %x\n",
8612 link_uhtid);
8613 return err;
8614 }
8615
8616 for (i = 0; nexthdr[i].jump; i++) {
8617 if (nexthdr[i].o != cls->knode.sel->offoff ||
8618 nexthdr[i].s != cls->knode.sel->offshift ||
8619 nexthdr[i].m != cls->knode.sel->offmask)
8620 return err;
8621
8622 jump = kzalloc(sizeof(*jump), GFP_KERNEL);
8623 if (!jump)
8624 return -ENOMEM;
8625 input = kzalloc(sizeof(*input), GFP_KERNEL);
8626 if (!input) {
8627 err = -ENOMEM;
8628 goto free_jump;
8629 }
8630 mask = kzalloc(sizeof(*mask), GFP_KERNEL);
8631 if (!mask) {
8632 err = -ENOMEM;
8633 goto free_input;
8634 }
8635 jump->input = input;
8636 jump->mask = mask;
8637 jump->link_hdl = cls->knode.handle;
8638
8639 err = ixgbe_clsu32_build_input(input, mask, cls,
8640 field_ptr, &nexthdr[i]);
8641 if (!err) {
8642 jump->mat = nexthdr[i].jump;
8643 adapter->jump_tables[link_uhtid] = jump;
8644 break;
8645 }
8646 }
8647 return 0;
8648 }
8649
8650 input = kzalloc(sizeof(*input), GFP_KERNEL);
8651 if (!input)
8652 return -ENOMEM;
8653 mask = kzalloc(sizeof(*mask), GFP_KERNEL);
8654 if (!mask) {
8655 err = -ENOMEM;
8656 goto free_input;
8657 }
8658
8659 if ((uhtid != 0x800) && (adapter->jump_tables[uhtid])) {
8660 if ((adapter->jump_tables[uhtid])->input)
8661 memcpy(input, (adapter->jump_tables[uhtid])->input,
8662 sizeof(*input));
8663 if ((adapter->jump_tables[uhtid])->mask)
8664 memcpy(mask, (adapter->jump_tables[uhtid])->mask,
8665 sizeof(*mask));
8666
8667 /* Lookup in all child hash tables if this location is already
8668 * filled with a filter
8669 */
8670 for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++) {
8671 struct ixgbe_jump_table *link = adapter->jump_tables[i];
8672
8673 if (link && (test_bit(loc - 1, link->child_loc_map))) {
8674 e_err(drv, "Filter exists in location: %x\n",
8675 loc);
8676 err = -EINVAL;
8677 goto err_out;
8678 }
8679 }
8680 }
8681 err = ixgbe_clsu32_build_input(input, mask, cls, field_ptr, NULL);
8682 if (err)
8683 goto err_out;
8684
8685 err = parse_tc_actions(adapter, cls->knode.exts, &input->action,
8686 &queue);
8687 if (err < 0)
8688 goto err_out;
8689
8690 input->sw_idx = loc;
8691
8692 spin_lock(&adapter->fdir_perfect_lock);
8693
8694 if (hlist_empty(&adapter->fdir_filter_list)) {
8695 memcpy(&adapter->fdir_mask, mask, sizeof(*mask));
8696 err = ixgbe_fdir_set_input_mask_82599(hw, mask);
8697 if (err)
8698 goto err_out_w_lock;
8699 } else if (memcmp(&adapter->fdir_mask, mask, sizeof(*mask))) {
8700 err = -EINVAL;
8701 goto err_out_w_lock;
8702 }
8703
8704 ixgbe_atr_compute_perfect_hash_82599(&input->filter, mask);
8705 err = ixgbe_fdir_write_perfect_filter_82599(hw, &input->filter,
8706 input->sw_idx, queue);
8707 if (!err)
8708 ixgbe_update_ethtool_fdir_entry(adapter, input, input->sw_idx);
8709 spin_unlock(&adapter->fdir_perfect_lock);
8710
8711 if ((uhtid != 0x800) && (adapter->jump_tables[uhtid]))
8712 set_bit(loc - 1, (adapter->jump_tables[uhtid])->child_loc_map);
8713
8714 kfree(mask);
8715 return err;
8716 err_out_w_lock:
8717 spin_unlock(&adapter->fdir_perfect_lock);
8718 err_out:
8719 kfree(mask);
8720 free_input:
8721 kfree(input);
8722 free_jump:
8723 kfree(jump);
8724 return err;
8725 }
8726
8727 static int __ixgbe_setup_tc(struct net_device *dev, u32 handle, __be16 proto,
8728 struct tc_to_netdev *tc)
8729 {
8730 struct ixgbe_adapter *adapter = netdev_priv(dev);
8731
8732 if (TC_H_MAJ(handle) == TC_H_MAJ(TC_H_INGRESS) &&
8733 tc->type == TC_SETUP_CLSU32) {
8734 switch (tc->cls_u32->command) {
8735 case TC_CLSU32_NEW_KNODE:
8736 case TC_CLSU32_REPLACE_KNODE:
8737 return ixgbe_configure_clsu32(adapter,
8738 proto, tc->cls_u32);
8739 case TC_CLSU32_DELETE_KNODE:
8740 return ixgbe_delete_clsu32(adapter, tc->cls_u32);
8741 case TC_CLSU32_NEW_HNODE:
8742 case TC_CLSU32_REPLACE_HNODE:
8743 return ixgbe_configure_clsu32_add_hnode(adapter, proto,
8744 tc->cls_u32);
8745 case TC_CLSU32_DELETE_HNODE:
8746 return ixgbe_configure_clsu32_del_hnode(adapter,
8747 tc->cls_u32);
8748 default:
8749 return -EINVAL;
8750 }
8751 }
8752
8753 if (tc->type != TC_SETUP_MQPRIO)
8754 return -EINVAL;
8755
8756 return ixgbe_setup_tc(dev, tc->tc);
8757 }
8758
8759 #ifdef CONFIG_PCI_IOV
8760 void ixgbe_sriov_reinit(struct ixgbe_adapter *adapter)
8761 {
8762 struct net_device *netdev = adapter->netdev;
8763
8764 rtnl_lock();
8765 ixgbe_setup_tc(netdev, netdev_get_num_tc(netdev));
8766 rtnl_unlock();
8767 }
8768
8769 #endif
8770 void ixgbe_do_reset(struct net_device *netdev)
8771 {
8772 struct ixgbe_adapter *adapter = netdev_priv(netdev);
8773
8774 if (netif_running(netdev))
8775 ixgbe_reinit_locked(adapter);
8776 else
8777 ixgbe_reset(adapter);
8778 }
8779
8780 static netdev_features_t ixgbe_fix_features(struct net_device *netdev,
8781 netdev_features_t features)
8782 {
8783 struct ixgbe_adapter *adapter = netdev_priv(netdev);
8784
8785 /* If Rx checksum is disabled, then RSC/LRO should also be disabled */
8786 if (!(features & NETIF_F_RXCSUM))
8787 features &= ~NETIF_F_LRO;
8788
8789 /* Turn off LRO if not RSC capable */
8790 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE))
8791 features &= ~NETIF_F_LRO;
8792
8793 return features;
8794 }
8795
8796 static int ixgbe_set_features(struct net_device *netdev,
8797 netdev_features_t features)
8798 {
8799 struct ixgbe_adapter *adapter = netdev_priv(netdev);
8800 netdev_features_t changed = netdev->features ^ features;
8801 bool need_reset = false;
8802
8803 /* Make sure RSC matches LRO, reset if change */
8804 if (!(features & NETIF_F_LRO)) {
8805 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
8806 need_reset = true;
8807 adapter->flags2 &= ~IXGBE_FLAG2_RSC_ENABLED;
8808 } else if ((adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE) &&
8809 !(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)) {
8810 if (adapter->rx_itr_setting == 1 ||
8811 adapter->rx_itr_setting > IXGBE_MIN_RSC_ITR) {
8812 adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED;
8813 need_reset = true;
8814 } else if ((changed ^ features) & NETIF_F_LRO) {
8815 e_info(probe, "rx-usecs set too low, "
8816 "disabling RSC\n");
8817 }
8818 }
8819
8820 /*
8821 * Check if Flow Director n-tuple support or hw_tc support was
8822 * enabled or disabled. If the state changed, we need to reset.
8823 */
8824 if ((features & NETIF_F_NTUPLE) || (features & NETIF_F_HW_TC)) {
8825 /* turn off ATR, enable perfect filters and reset */
8826 if (!(adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))
8827 need_reset = true;
8828
8829 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
8830 adapter->flags |= IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
8831 } else {
8832 /* turn off perfect filters, enable ATR and reset */
8833 if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)
8834 need_reset = true;
8835
8836 adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
8837
8838 /* We cannot enable ATR if SR-IOV is enabled */
8839 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED ||
8840 /* We cannot enable ATR if we have 2 or more tcs */
8841 (netdev_get_num_tc(netdev) > 1) ||
8842 /* We cannot enable ATR if RSS is disabled */
8843 (adapter->ring_feature[RING_F_RSS].limit <= 1) ||
8844 /* A sample rate of 0 indicates ATR disabled */
8845 (!adapter->atr_sample_rate))
8846 ; /* do nothing not supported */
8847 else /* otherwise supported and set the flag */
8848 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
8849 }
8850
8851 if (changed & NETIF_F_RXALL)
8852 need_reset = true;
8853
8854 netdev->features = features;
8855
8856 if ((adapter->flags & IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE)) {
8857 if (features & NETIF_F_RXCSUM) {
8858 adapter->flags2 |= IXGBE_FLAG2_UDP_TUN_REREG_NEEDED;
8859 } else {
8860 u32 port_mask = IXGBE_VXLANCTRL_VXLAN_UDPPORT_MASK;
8861
8862 ixgbe_clear_udp_tunnel_port(adapter, port_mask);
8863 }
8864 }
8865
8866 if ((adapter->flags & IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE)) {
8867 if (features & NETIF_F_RXCSUM) {
8868 adapter->flags2 |= IXGBE_FLAG2_UDP_TUN_REREG_NEEDED;
8869 } else {
8870 u32 port_mask = IXGBE_VXLANCTRL_GENEVE_UDPPORT_MASK;
8871
8872 ixgbe_clear_udp_tunnel_port(adapter, port_mask);
8873 }
8874 }
8875
8876 if (need_reset)
8877 ixgbe_do_reset(netdev);
8878 else if (changed & (NETIF_F_HW_VLAN_CTAG_RX |
8879 NETIF_F_HW_VLAN_CTAG_FILTER))
8880 ixgbe_set_rx_mode(netdev);
8881
8882 return 0;
8883 }
8884
8885 /**
8886 * ixgbe_add_udp_tunnel_port - Get notifications about adding UDP tunnel ports
8887 * @dev: The port's netdev
8888 * @ti: Tunnel endpoint information
8889 **/
8890 static void ixgbe_add_udp_tunnel_port(struct net_device *dev,
8891 struct udp_tunnel_info *ti)
8892 {
8893 struct ixgbe_adapter *adapter = netdev_priv(dev);
8894 struct ixgbe_hw *hw = &adapter->hw;
8895 __be16 port = ti->port;
8896 u32 port_shift = 0;
8897 u32 reg;
8898
8899 if (ti->sa_family != AF_INET)
8900 return;
8901
8902 switch (ti->type) {
8903 case UDP_TUNNEL_TYPE_VXLAN:
8904 if (!(adapter->flags & IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE))
8905 return;
8906
8907 if (adapter->vxlan_port == port)
8908 return;
8909
8910 if (adapter->vxlan_port) {
8911 netdev_info(dev,
8912 "VXLAN port %d set, not adding port %d\n",
8913 ntohs(adapter->vxlan_port),
8914 ntohs(port));
8915 return;
8916 }
8917
8918 adapter->vxlan_port = port;
8919 break;
8920 case UDP_TUNNEL_TYPE_GENEVE:
8921 if (!(adapter->flags & IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE))
8922 return;
8923
8924 if (adapter->geneve_port == port)
8925 return;
8926
8927 if (adapter->geneve_port) {
8928 netdev_info(dev,
8929 "GENEVE port %d set, not adding port %d\n",
8930 ntohs(adapter->geneve_port),
8931 ntohs(port));
8932 return;
8933 }
8934
8935 port_shift = IXGBE_VXLANCTRL_GENEVE_UDPPORT_SHIFT;
8936 adapter->geneve_port = port;
8937 break;
8938 default:
8939 return;
8940 }
8941
8942 reg = IXGBE_READ_REG(hw, IXGBE_VXLANCTRL) | ntohs(port) << port_shift;
8943 IXGBE_WRITE_REG(hw, IXGBE_VXLANCTRL, reg);
8944 }
8945
8946 /**
8947 * ixgbe_del_udp_tunnel_port - Get notifications about removing UDP tunnel ports
8948 * @dev: The port's netdev
8949 * @ti: Tunnel endpoint information
8950 **/
8951 static void ixgbe_del_udp_tunnel_port(struct net_device *dev,
8952 struct udp_tunnel_info *ti)
8953 {
8954 struct ixgbe_adapter *adapter = netdev_priv(dev);
8955 u32 port_mask;
8956
8957 if (ti->type != UDP_TUNNEL_TYPE_VXLAN &&
8958 ti->type != UDP_TUNNEL_TYPE_GENEVE)
8959 return;
8960
8961 if (ti->sa_family != AF_INET)
8962 return;
8963
8964 switch (ti->type) {
8965 case UDP_TUNNEL_TYPE_VXLAN:
8966 if (!(adapter->flags & IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE))
8967 return;
8968
8969 if (adapter->vxlan_port != ti->port) {
8970 netdev_info(dev, "VXLAN port %d not found\n",
8971 ntohs(ti->port));
8972 return;
8973 }
8974
8975 port_mask = IXGBE_VXLANCTRL_VXLAN_UDPPORT_MASK;
8976 break;
8977 case UDP_TUNNEL_TYPE_GENEVE:
8978 if (!(adapter->flags & IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE))
8979 return;
8980
8981 if (adapter->geneve_port != ti->port) {
8982 netdev_info(dev, "GENEVE port %d not found\n",
8983 ntohs(ti->port));
8984 return;
8985 }
8986
8987 port_mask = IXGBE_VXLANCTRL_GENEVE_UDPPORT_MASK;
8988 break;
8989 default:
8990 return;
8991 }
8992
8993 ixgbe_clear_udp_tunnel_port(adapter, port_mask);
8994 adapter->flags2 |= IXGBE_FLAG2_UDP_TUN_REREG_NEEDED;
8995 }
8996
8997 static int ixgbe_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8998 struct net_device *dev,
8999 const unsigned char *addr, u16 vid,
9000 u16 flags)
9001 {
9002 /* guarantee we can provide a unique filter for the unicast address */
9003 if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) {
9004 struct ixgbe_adapter *adapter = netdev_priv(dev);
9005 u16 pool = VMDQ_P(0);
9006
9007 if (netdev_uc_count(dev) >= ixgbe_available_rars(adapter, pool))
9008 return -ENOMEM;
9009 }
9010
9011 return ndo_dflt_fdb_add(ndm, tb, dev, addr, vid, flags);
9012 }
9013
9014 /**
9015 * ixgbe_configure_bridge_mode - set various bridge modes
9016 * @adapter - the private structure
9017 * @mode - requested bridge mode
9018 *
9019 * Configure some settings require for various bridge modes.
9020 **/
9021 static int ixgbe_configure_bridge_mode(struct ixgbe_adapter *adapter,
9022 __u16 mode)
9023 {
9024 struct ixgbe_hw *hw = &adapter->hw;
9025 unsigned int p, num_pools;
9026 u32 vmdctl;
9027
9028 switch (mode) {
9029 case BRIDGE_MODE_VEPA:
9030 /* disable Tx loopback, rely on switch hairpin mode */
9031 IXGBE_WRITE_REG(&adapter->hw, IXGBE_PFDTXGSWC, 0);
9032
9033 /* must enable Rx switching replication to allow multicast
9034 * packet reception on all VFs, and to enable source address
9035 * pruning.
9036 */
9037 vmdctl = IXGBE_READ_REG(hw, IXGBE_VMD_CTL);
9038 vmdctl |= IXGBE_VT_CTL_REPLEN;
9039 IXGBE_WRITE_REG(hw, IXGBE_VMD_CTL, vmdctl);
9040
9041 /* enable Rx source address pruning. Note, this requires
9042 * replication to be enabled or else it does nothing.
9043 */
9044 num_pools = adapter->num_vfs + adapter->num_rx_pools;
9045 for (p = 0; p < num_pools; p++) {
9046 if (hw->mac.ops.set_source_address_pruning)
9047 hw->mac.ops.set_source_address_pruning(hw,
9048 true,
9049 p);
9050 }
9051 break;
9052 case BRIDGE_MODE_VEB:
9053 /* enable Tx loopback for internal VF/PF communication */
9054 IXGBE_WRITE_REG(&adapter->hw, IXGBE_PFDTXGSWC,
9055 IXGBE_PFDTXGSWC_VT_LBEN);
9056
9057 /* disable Rx switching replication unless we have SR-IOV
9058 * virtual functions
9059 */
9060 vmdctl = IXGBE_READ_REG(hw, IXGBE_VMD_CTL);
9061 if (!adapter->num_vfs)
9062 vmdctl &= ~IXGBE_VT_CTL_REPLEN;
9063 IXGBE_WRITE_REG(hw, IXGBE_VMD_CTL, vmdctl);
9064
9065 /* disable Rx source address pruning, since we don't expect to
9066 * be receiving external loopback of our transmitted frames.
9067 */
9068 num_pools = adapter->num_vfs + adapter->num_rx_pools;
9069 for (p = 0; p < num_pools; p++) {
9070 if (hw->mac.ops.set_source_address_pruning)
9071 hw->mac.ops.set_source_address_pruning(hw,
9072 false,
9073 p);
9074 }
9075 break;
9076 default:
9077 return -EINVAL;
9078 }
9079
9080 adapter->bridge_mode = mode;
9081
9082 e_info(drv, "enabling bridge mode: %s\n",
9083 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
9084
9085 return 0;
9086 }
9087
9088 static int ixgbe_ndo_bridge_setlink(struct net_device *dev,
9089 struct nlmsghdr *nlh, u16 flags)
9090 {
9091 struct ixgbe_adapter *adapter = netdev_priv(dev);
9092 struct nlattr *attr, *br_spec;
9093 int rem;
9094
9095 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
9096 return -EOPNOTSUPP;
9097
9098 br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
9099 if (!br_spec)
9100 return -EINVAL;
9101
9102 nla_for_each_nested(attr, br_spec, rem) {
9103 int status;
9104 __u16 mode;
9105
9106 if (nla_type(attr) != IFLA_BRIDGE_MODE)
9107 continue;
9108
9109 if (nla_len(attr) < sizeof(mode))
9110 return -EINVAL;
9111
9112 mode = nla_get_u16(attr);
9113 status = ixgbe_configure_bridge_mode(adapter, mode);
9114 if (status)
9115 return status;
9116
9117 break;
9118 }
9119
9120 return 0;
9121 }
9122
9123 static int ixgbe_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
9124 struct net_device *dev,
9125 u32 filter_mask, int nlflags)
9126 {
9127 struct ixgbe_adapter *adapter = netdev_priv(dev);
9128
9129 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
9130 return 0;
9131
9132 return ndo_dflt_bridge_getlink(skb, pid, seq, dev,
9133 adapter->bridge_mode, 0, 0, nlflags,
9134 filter_mask, NULL);
9135 }
9136
9137 static void *ixgbe_fwd_add(struct net_device *pdev, struct net_device *vdev)
9138 {
9139 struct ixgbe_fwd_adapter *fwd_adapter = NULL;
9140 struct ixgbe_adapter *adapter = netdev_priv(pdev);
9141 int used_pools = adapter->num_vfs + adapter->num_rx_pools;
9142 unsigned int limit;
9143 int pool, err;
9144
9145 /* Hardware has a limited number of available pools. Each VF, and the
9146 * PF require a pool. Check to ensure we don't attempt to use more
9147 * then the available number of pools.
9148 */
9149 if (used_pools >= IXGBE_MAX_VF_FUNCTIONS)
9150 return ERR_PTR(-EINVAL);
9151
9152 #ifdef CONFIG_RPS
9153 if (vdev->num_rx_queues != vdev->num_tx_queues) {
9154 netdev_info(pdev, "%s: Only supports a single queue count for TX and RX\n",
9155 vdev->name);
9156 return ERR_PTR(-EINVAL);
9157 }
9158 #endif
9159 /* Check for hardware restriction on number of rx/tx queues */
9160 if (vdev->num_tx_queues > IXGBE_MAX_L2A_QUEUES ||
9161 vdev->num_tx_queues == IXGBE_BAD_L2A_QUEUE) {
9162 netdev_info(pdev,
9163 "%s: Supports RX/TX Queue counts 1,2, and 4\n",
9164 pdev->name);
9165 return ERR_PTR(-EINVAL);
9166 }
9167
9168 if (((adapter->flags & IXGBE_FLAG_DCB_ENABLED) &&
9169 adapter->num_rx_pools > IXGBE_MAX_DCBMACVLANS - 1) ||
9170 (adapter->num_rx_pools > IXGBE_MAX_MACVLANS))
9171 return ERR_PTR(-EBUSY);
9172
9173 fwd_adapter = kzalloc(sizeof(*fwd_adapter), GFP_KERNEL);
9174 if (!fwd_adapter)
9175 return ERR_PTR(-ENOMEM);
9176
9177 pool = find_first_zero_bit(&adapter->fwd_bitmask, 32);
9178 adapter->num_rx_pools++;
9179 set_bit(pool, &adapter->fwd_bitmask);
9180 limit = find_last_bit(&adapter->fwd_bitmask, 32);
9181
9182 /* Enable VMDq flag so device will be set in VM mode */
9183 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED | IXGBE_FLAG_SRIOV_ENABLED;
9184 adapter->ring_feature[RING_F_VMDQ].limit = limit + 1;
9185 adapter->ring_feature[RING_F_RSS].limit = vdev->num_tx_queues;
9186
9187 /* Force reinit of ring allocation with VMDQ enabled */
9188 err = ixgbe_setup_tc(pdev, netdev_get_num_tc(pdev));
9189 if (err)
9190 goto fwd_add_err;
9191 fwd_adapter->pool = pool;
9192 fwd_adapter->real_adapter = adapter;
9193
9194 if (netif_running(pdev)) {
9195 err = ixgbe_fwd_ring_up(vdev, fwd_adapter);
9196 if (err)
9197 goto fwd_add_err;
9198 netif_tx_start_all_queues(vdev);
9199 }
9200
9201 return fwd_adapter;
9202 fwd_add_err:
9203 /* unwind counter and free adapter struct */
9204 netdev_info(pdev,
9205 "%s: dfwd hardware acceleration failed\n", vdev->name);
9206 clear_bit(pool, &adapter->fwd_bitmask);
9207 adapter->num_rx_pools--;
9208 kfree(fwd_adapter);
9209 return ERR_PTR(err);
9210 }
9211
9212 static void ixgbe_fwd_del(struct net_device *pdev, void *priv)
9213 {
9214 struct ixgbe_fwd_adapter *fwd_adapter = priv;
9215 struct ixgbe_adapter *adapter = fwd_adapter->real_adapter;
9216 unsigned int limit;
9217
9218 clear_bit(fwd_adapter->pool, &adapter->fwd_bitmask);
9219 adapter->num_rx_pools--;
9220
9221 limit = find_last_bit(&adapter->fwd_bitmask, 32);
9222 adapter->ring_feature[RING_F_VMDQ].limit = limit + 1;
9223 ixgbe_fwd_ring_down(fwd_adapter->netdev, fwd_adapter);
9224 ixgbe_setup_tc(pdev, netdev_get_num_tc(pdev));
9225 netdev_dbg(pdev, "pool %i:%i queues %i:%i VSI bitmask %lx\n",
9226 fwd_adapter->pool, adapter->num_rx_pools,
9227 fwd_adapter->rx_base_queue,
9228 fwd_adapter->rx_base_queue + adapter->num_rx_queues_per_pool,
9229 adapter->fwd_bitmask);
9230 kfree(fwd_adapter);
9231 }
9232
9233 #define IXGBE_MAX_MAC_HDR_LEN 127
9234 #define IXGBE_MAX_NETWORK_HDR_LEN 511
9235
9236 static netdev_features_t
9237 ixgbe_features_check(struct sk_buff *skb, struct net_device *dev,
9238 netdev_features_t features)
9239 {
9240 unsigned int network_hdr_len, mac_hdr_len;
9241
9242 /* Make certain the headers can be described by a context descriptor */
9243 mac_hdr_len = skb_network_header(skb) - skb->data;
9244 if (unlikely(mac_hdr_len > IXGBE_MAX_MAC_HDR_LEN))
9245 return features & ~(NETIF_F_HW_CSUM |
9246 NETIF_F_SCTP_CRC |
9247 NETIF_F_HW_VLAN_CTAG_TX |
9248 NETIF_F_TSO |
9249 NETIF_F_TSO6);
9250
9251 network_hdr_len = skb_checksum_start(skb) - skb_network_header(skb);
9252 if (unlikely(network_hdr_len > IXGBE_MAX_NETWORK_HDR_LEN))
9253 return features & ~(NETIF_F_HW_CSUM |
9254 NETIF_F_SCTP_CRC |
9255 NETIF_F_TSO |
9256 NETIF_F_TSO6);
9257
9258 /* We can only support IPV4 TSO in tunnels if we can mangle the
9259 * inner IP ID field, so strip TSO if MANGLEID is not supported.
9260 */
9261 if (skb->encapsulation && !(features & NETIF_F_TSO_MANGLEID))
9262 features &= ~NETIF_F_TSO;
9263
9264 return features;
9265 }
9266
9267 static const struct net_device_ops ixgbe_netdev_ops = {
9268 .ndo_open = ixgbe_open,
9269 .ndo_stop = ixgbe_close,
9270 .ndo_start_xmit = ixgbe_xmit_frame,
9271 .ndo_select_queue = ixgbe_select_queue,
9272 .ndo_set_rx_mode = ixgbe_set_rx_mode,
9273 .ndo_validate_addr = eth_validate_addr,
9274 .ndo_set_mac_address = ixgbe_set_mac,
9275 .ndo_change_mtu = ixgbe_change_mtu,
9276 .ndo_tx_timeout = ixgbe_tx_timeout,
9277 .ndo_set_tx_maxrate = ixgbe_tx_maxrate,
9278 .ndo_vlan_rx_add_vid = ixgbe_vlan_rx_add_vid,
9279 .ndo_vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid,
9280 .ndo_do_ioctl = ixgbe_ioctl,
9281 .ndo_set_vf_mac = ixgbe_ndo_set_vf_mac,
9282 .ndo_set_vf_vlan = ixgbe_ndo_set_vf_vlan,
9283 .ndo_set_vf_rate = ixgbe_ndo_set_vf_bw,
9284 .ndo_set_vf_spoofchk = ixgbe_ndo_set_vf_spoofchk,
9285 .ndo_set_vf_rss_query_en = ixgbe_ndo_set_vf_rss_query_en,
9286 .ndo_set_vf_trust = ixgbe_ndo_set_vf_trust,
9287 .ndo_get_vf_config = ixgbe_ndo_get_vf_config,
9288 .ndo_get_stats64 = ixgbe_get_stats64,
9289 .ndo_setup_tc = __ixgbe_setup_tc,
9290 #ifdef CONFIG_NET_POLL_CONTROLLER
9291 .ndo_poll_controller = ixgbe_netpoll,
9292 #endif
9293 #ifdef CONFIG_NET_RX_BUSY_POLL
9294 .ndo_busy_poll = ixgbe_low_latency_recv,
9295 #endif
9296 #ifdef IXGBE_FCOE
9297 .ndo_fcoe_ddp_setup = ixgbe_fcoe_ddp_get,
9298 .ndo_fcoe_ddp_target = ixgbe_fcoe_ddp_target,
9299 .ndo_fcoe_ddp_done = ixgbe_fcoe_ddp_put,
9300 .ndo_fcoe_enable = ixgbe_fcoe_enable,
9301 .ndo_fcoe_disable = ixgbe_fcoe_disable,
9302 .ndo_fcoe_get_wwn = ixgbe_fcoe_get_wwn,
9303 .ndo_fcoe_get_hbainfo = ixgbe_fcoe_get_hbainfo,
9304 #endif /* IXGBE_FCOE */
9305 .ndo_set_features = ixgbe_set_features,
9306 .ndo_fix_features = ixgbe_fix_features,
9307 .ndo_fdb_add = ixgbe_ndo_fdb_add,
9308 .ndo_bridge_setlink = ixgbe_ndo_bridge_setlink,
9309 .ndo_bridge_getlink = ixgbe_ndo_bridge_getlink,
9310 .ndo_dfwd_add_station = ixgbe_fwd_add,
9311 .ndo_dfwd_del_station = ixgbe_fwd_del,
9312 .ndo_udp_tunnel_add = ixgbe_add_udp_tunnel_port,
9313 .ndo_udp_tunnel_del = ixgbe_del_udp_tunnel_port,
9314 .ndo_features_check = ixgbe_features_check,
9315 };
9316
9317 /**
9318 * ixgbe_enumerate_functions - Get the number of ports this device has
9319 * @adapter: adapter structure
9320 *
9321 * This function enumerates the phsyical functions co-located on a single slot,
9322 * in order to determine how many ports a device has. This is most useful in
9323 * determining the required GT/s of PCIe bandwidth necessary for optimal
9324 * performance.
9325 **/
9326 static inline int ixgbe_enumerate_functions(struct ixgbe_adapter *adapter)
9327 {
9328 struct pci_dev *entry, *pdev = adapter->pdev;
9329 int physfns = 0;
9330
9331 /* Some cards can not use the generic count PCIe functions method,
9332 * because they are behind a parent switch, so we hardcode these with
9333 * the correct number of functions.
9334 */
9335 if (ixgbe_pcie_from_parent(&adapter->hw))
9336 physfns = 4;
9337
9338 list_for_each_entry(entry, &adapter->pdev->bus->devices, bus_list) {
9339 /* don't count virtual functions */
9340 if (entry->is_virtfn)
9341 continue;
9342
9343 /* When the devices on the bus don't all match our device ID,
9344 * we can't reliably determine the correct number of
9345 * functions. This can occur if a function has been direct
9346 * attached to a virtual machine using VT-d, for example. In
9347 * this case, simply return -1 to indicate this.
9348 */
9349 if ((entry->vendor != pdev->vendor) ||
9350 (entry->device != pdev->device))
9351 return -1;
9352
9353 physfns++;
9354 }
9355
9356 return physfns;
9357 }
9358
9359 /**
9360 * ixgbe_wol_supported - Check whether device supports WoL
9361 * @adapter: the adapter private structure
9362 * @device_id: the device ID
9363 * @subdev_id: the subsystem device ID
9364 *
9365 * This function is used by probe and ethtool to determine
9366 * which devices have WoL support
9367 *
9368 **/
9369 bool ixgbe_wol_supported(struct ixgbe_adapter *adapter, u16 device_id,
9370 u16 subdevice_id)
9371 {
9372 struct ixgbe_hw *hw = &adapter->hw;
9373 u16 wol_cap = adapter->eeprom_cap & IXGBE_DEVICE_CAPS_WOL_MASK;
9374
9375 /* WOL not supported on 82598 */
9376 if (hw->mac.type == ixgbe_mac_82598EB)
9377 return false;
9378
9379 /* check eeprom to see if WOL is enabled for X540 and newer */
9380 if (hw->mac.type >= ixgbe_mac_X540) {
9381 if ((wol_cap == IXGBE_DEVICE_CAPS_WOL_PORT0_1) ||
9382 ((wol_cap == IXGBE_DEVICE_CAPS_WOL_PORT0) &&
9383 (hw->bus.func == 0)))
9384 return true;
9385 }
9386
9387 /* WOL is determined based on device IDs for 82599 MACs */
9388 switch (device_id) {
9389 case IXGBE_DEV_ID_82599_SFP:
9390 /* Only these subdevices could supports WOL */
9391 switch (subdevice_id) {
9392 case IXGBE_SUBDEV_ID_82599_560FLR:
9393 case IXGBE_SUBDEV_ID_82599_LOM_SNAP6:
9394 case IXGBE_SUBDEV_ID_82599_SFP_WOL0:
9395 case IXGBE_SUBDEV_ID_82599_SFP_2OCP:
9396 /* only support first port */
9397 if (hw->bus.func != 0)
9398 break;
9399 case IXGBE_SUBDEV_ID_82599_SP_560FLR:
9400 case IXGBE_SUBDEV_ID_82599_SFP:
9401 case IXGBE_SUBDEV_ID_82599_RNDC:
9402 case IXGBE_SUBDEV_ID_82599_ECNA_DP:
9403 case IXGBE_SUBDEV_ID_82599_SFP_1OCP:
9404 case IXGBE_SUBDEV_ID_82599_SFP_LOM_OEM1:
9405 case IXGBE_SUBDEV_ID_82599_SFP_LOM_OEM2:
9406 return true;
9407 }
9408 break;
9409 case IXGBE_DEV_ID_82599EN_SFP:
9410 /* Only these subdevices support WOL */
9411 switch (subdevice_id) {
9412 case IXGBE_SUBDEV_ID_82599EN_SFP_OCP1:
9413 return true;
9414 }
9415 break;
9416 case IXGBE_DEV_ID_82599_COMBO_BACKPLANE:
9417 /* All except this subdevice support WOL */
9418 if (subdevice_id != IXGBE_SUBDEV_ID_82599_KX4_KR_MEZZ)
9419 return true;
9420 break;
9421 case IXGBE_DEV_ID_82599_KX4:
9422 return true;
9423 default:
9424 break;
9425 }
9426
9427 return false;
9428 }
9429
9430 /**
9431 * ixgbe_probe - Device Initialization Routine
9432 * @pdev: PCI device information struct
9433 * @ent: entry in ixgbe_pci_tbl
9434 *
9435 * Returns 0 on success, negative on failure
9436 *
9437 * ixgbe_probe initializes an adapter identified by a pci_dev structure.
9438 * The OS initialization, configuring of the adapter private structure,
9439 * and a hardware reset occur.
9440 **/
9441 static int ixgbe_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9442 {
9443 struct net_device *netdev;
9444 struct ixgbe_adapter *adapter = NULL;
9445 struct ixgbe_hw *hw;
9446 const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data];
9447 int i, err, pci_using_dac, expected_gts;
9448 unsigned int indices = MAX_TX_QUEUES;
9449 u8 part_str[IXGBE_PBANUM_LENGTH];
9450 bool disable_dev = false;
9451 #ifdef IXGBE_FCOE
9452 u16 device_caps;
9453 #endif
9454 u32 eec;
9455
9456 /* Catch broken hardware that put the wrong VF device ID in
9457 * the PCIe SR-IOV capability.
9458 */
9459 if (pdev->is_virtfn) {
9460 WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n",
9461 pci_name(pdev), pdev->vendor, pdev->device);
9462 return -EINVAL;
9463 }
9464
9465 err = pci_enable_device_mem(pdev);
9466 if (err)
9467 return err;
9468
9469 if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) {
9470 pci_using_dac = 1;
9471 } else {
9472 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9473 if (err) {
9474 dev_err(&pdev->dev,
9475 "No usable DMA configuration, aborting\n");
9476 goto err_dma;
9477 }
9478 pci_using_dac = 0;
9479 }
9480
9481 err = pci_request_mem_regions(pdev, ixgbe_driver_name);
9482 if (err) {
9483 dev_err(&pdev->dev,
9484 "pci_request_selected_regions failed 0x%x\n", err);
9485 goto err_pci_reg;
9486 }
9487
9488 pci_enable_pcie_error_reporting(pdev);
9489
9490 pci_set_master(pdev);
9491 pci_save_state(pdev);
9492
9493 if (ii->mac == ixgbe_mac_82598EB) {
9494 #ifdef CONFIG_IXGBE_DCB
9495 /* 8 TC w/ 4 queues per TC */
9496 indices = 4 * MAX_TRAFFIC_CLASS;
9497 #else
9498 indices = IXGBE_MAX_RSS_INDICES;
9499 #endif
9500 }
9501
9502 netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), indices);
9503 if (!netdev) {
9504 err = -ENOMEM;
9505 goto err_alloc_etherdev;
9506 }
9507
9508 SET_NETDEV_DEV(netdev, &pdev->dev);
9509
9510 adapter = netdev_priv(netdev);
9511
9512 adapter->netdev = netdev;
9513 adapter->pdev = pdev;
9514 hw = &adapter->hw;
9515 hw->back = adapter;
9516 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
9517
9518 hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
9519 pci_resource_len(pdev, 0));
9520 adapter->io_addr = hw->hw_addr;
9521 if (!hw->hw_addr) {
9522 err = -EIO;
9523 goto err_ioremap;
9524 }
9525
9526 netdev->netdev_ops = &ixgbe_netdev_ops;
9527 ixgbe_set_ethtool_ops(netdev);
9528 netdev->watchdog_timeo = 5 * HZ;
9529 strlcpy(netdev->name, pci_name(pdev), sizeof(netdev->name));
9530
9531 /* Setup hw api */
9532 hw->mac.ops = *ii->mac_ops;
9533 hw->mac.type = ii->mac;
9534 hw->mvals = ii->mvals;
9535 if (ii->link_ops)
9536 hw->link.ops = *ii->link_ops;
9537
9538 /* EEPROM */
9539 hw->eeprom.ops = *ii->eeprom_ops;
9540 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
9541 if (ixgbe_removed(hw->hw_addr)) {
9542 err = -EIO;
9543 goto err_ioremap;
9544 }
9545 /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */
9546 if (!(eec & BIT(8)))
9547 hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic;
9548
9549 /* PHY */
9550 hw->phy.ops = *ii->phy_ops;
9551 hw->phy.sfp_type = ixgbe_sfp_type_unknown;
9552 /* ixgbe_identify_phy_generic will set prtad and mmds properly */
9553 hw->phy.mdio.prtad = MDIO_PRTAD_NONE;
9554 hw->phy.mdio.mmds = 0;
9555 hw->phy.mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
9556 hw->phy.mdio.dev = netdev;
9557 hw->phy.mdio.mdio_read = ixgbe_mdio_read;
9558 hw->phy.mdio.mdio_write = ixgbe_mdio_write;
9559
9560 /* setup the private structure */
9561 err = ixgbe_sw_init(adapter, ii);
9562 if (err)
9563 goto err_sw_init;
9564
9565 /* Make sure the SWFW semaphore is in a valid state */
9566 if (hw->mac.ops.init_swfw_sync)
9567 hw->mac.ops.init_swfw_sync(hw);
9568
9569 /* Make it possible the adapter to be woken up via WOL */
9570 switch (adapter->hw.mac.type) {
9571 case ixgbe_mac_82599EB:
9572 case ixgbe_mac_X540:
9573 case ixgbe_mac_X550:
9574 case ixgbe_mac_X550EM_x:
9575 case ixgbe_mac_x550em_a:
9576 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
9577 break;
9578 default:
9579 break;
9580 }
9581
9582 /*
9583 * If there is a fan on this device and it has failed log the
9584 * failure.
9585 */
9586 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) {
9587 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
9588 if (esdp & IXGBE_ESDP_SDP1)
9589 e_crit(probe, "Fan has stopped, replace the adapter\n");
9590 }
9591
9592 if (allow_unsupported_sfp)
9593 hw->allow_unsupported_sfp = allow_unsupported_sfp;
9594
9595 /* reset_hw fills in the perm_addr as well */
9596 hw->phy.reset_if_overtemp = true;
9597 err = hw->mac.ops.reset_hw(hw);
9598 hw->phy.reset_if_overtemp = false;
9599 if (err == IXGBE_ERR_SFP_NOT_PRESENT) {
9600 err = 0;
9601 } else if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) {
9602 e_dev_err("failed to load because an unsupported SFP+ or QSFP module type was detected.\n");
9603 e_dev_err("Reload the driver after installing a supported module.\n");
9604 goto err_sw_init;
9605 } else if (err) {
9606 e_dev_err("HW Init failed: %d\n", err);
9607 goto err_sw_init;
9608 }
9609
9610 #ifdef CONFIG_PCI_IOV
9611 /* SR-IOV not supported on the 82598 */
9612 if (adapter->hw.mac.type == ixgbe_mac_82598EB)
9613 goto skip_sriov;
9614 /* Mailbox */
9615 ixgbe_init_mbx_params_pf(hw);
9616 hw->mbx.ops = ii->mbx_ops;
9617 pci_sriov_set_totalvfs(pdev, IXGBE_MAX_VFS_DRV_LIMIT);
9618 ixgbe_enable_sriov(adapter);
9619 skip_sriov:
9620
9621 #endif
9622 netdev->features = NETIF_F_SG |
9623 NETIF_F_TSO |
9624 NETIF_F_TSO6 |
9625 NETIF_F_RXHASH |
9626 NETIF_F_RXCSUM |
9627 NETIF_F_HW_CSUM;
9628
9629 #define IXGBE_GSO_PARTIAL_FEATURES (NETIF_F_GSO_GRE | \
9630 NETIF_F_GSO_GRE_CSUM | \
9631 NETIF_F_GSO_IPXIP4 | \
9632 NETIF_F_GSO_IPXIP6 | \
9633 NETIF_F_GSO_UDP_TUNNEL | \
9634 NETIF_F_GSO_UDP_TUNNEL_CSUM)
9635
9636 netdev->gso_partial_features = IXGBE_GSO_PARTIAL_FEATURES;
9637 netdev->features |= NETIF_F_GSO_PARTIAL |
9638 IXGBE_GSO_PARTIAL_FEATURES;
9639
9640 if (hw->mac.type >= ixgbe_mac_82599EB)
9641 netdev->features |= NETIF_F_SCTP_CRC;
9642
9643 /* copy netdev features into list of user selectable features */
9644 netdev->hw_features |= netdev->features |
9645 NETIF_F_HW_VLAN_CTAG_FILTER |
9646 NETIF_F_HW_VLAN_CTAG_RX |
9647 NETIF_F_HW_VLAN_CTAG_TX |
9648 NETIF_F_RXALL |
9649 NETIF_F_HW_L2FW_DOFFLOAD;
9650
9651 if (hw->mac.type >= ixgbe_mac_82599EB)
9652 netdev->hw_features |= NETIF_F_NTUPLE |
9653 NETIF_F_HW_TC;
9654
9655 if (pci_using_dac)
9656 netdev->features |= NETIF_F_HIGHDMA;
9657
9658 netdev->vlan_features |= netdev->features | NETIF_F_TSO_MANGLEID;
9659 netdev->hw_enc_features |= netdev->vlan_features;
9660 netdev->mpls_features |= NETIF_F_HW_CSUM;
9661
9662 /* set this bit last since it cannot be part of vlan_features */
9663 netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER |
9664 NETIF_F_HW_VLAN_CTAG_RX |
9665 NETIF_F_HW_VLAN_CTAG_TX;
9666
9667 netdev->priv_flags |= IFF_UNICAST_FLT;
9668 netdev->priv_flags |= IFF_SUPP_NOFCS;
9669
9670 /* MTU range: 68 - 9710 */
9671 netdev->min_mtu = ETH_MIN_MTU;
9672 netdev->max_mtu = IXGBE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN);
9673
9674 #ifdef CONFIG_IXGBE_DCB
9675 if (adapter->flags & IXGBE_FLAG_DCB_CAPABLE)
9676 netdev->dcbnl_ops = &dcbnl_ops;
9677 #endif
9678
9679 #ifdef IXGBE_FCOE
9680 if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) {
9681 unsigned int fcoe_l;
9682
9683 if (hw->mac.ops.get_device_caps) {
9684 hw->mac.ops.get_device_caps(hw, &device_caps);
9685 if (device_caps & IXGBE_DEVICE_CAPS_FCOE_OFFLOADS)
9686 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE;
9687 }
9688
9689
9690 fcoe_l = min_t(int, IXGBE_FCRETA_SIZE, num_online_cpus());
9691 adapter->ring_feature[RING_F_FCOE].limit = fcoe_l;
9692
9693 netdev->features |= NETIF_F_FSO |
9694 NETIF_F_FCOE_CRC;
9695
9696 netdev->vlan_features |= NETIF_F_FSO |
9697 NETIF_F_FCOE_CRC |
9698 NETIF_F_FCOE_MTU;
9699 }
9700 #endif /* IXGBE_FCOE */
9701
9702 if (adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE)
9703 netdev->hw_features |= NETIF_F_LRO;
9704 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)
9705 netdev->features |= NETIF_F_LRO;
9706
9707 /* make sure the EEPROM is good */
9708 if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) {
9709 e_dev_err("The EEPROM Checksum Is Not Valid\n");
9710 err = -EIO;
9711 goto err_sw_init;
9712 }
9713
9714 eth_platform_get_mac_address(&adapter->pdev->dev,
9715 adapter->hw.mac.perm_addr);
9716
9717 memcpy(netdev->dev_addr, hw->mac.perm_addr, netdev->addr_len);
9718
9719 if (!is_valid_ether_addr(netdev->dev_addr)) {
9720 e_dev_err("invalid MAC address\n");
9721 err = -EIO;
9722 goto err_sw_init;
9723 }
9724
9725 /* Set hw->mac.addr to permanent MAC address */
9726 ether_addr_copy(hw->mac.addr, hw->mac.perm_addr);
9727 ixgbe_mac_set_default_filter(adapter);
9728
9729 setup_timer(&adapter->service_timer, &ixgbe_service_timer,
9730 (unsigned long) adapter);
9731
9732 if (ixgbe_removed(hw->hw_addr)) {
9733 err = -EIO;
9734 goto err_sw_init;
9735 }
9736 INIT_WORK(&adapter->service_task, ixgbe_service_task);
9737 set_bit(__IXGBE_SERVICE_INITED, &adapter->state);
9738 clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state);
9739
9740 err = ixgbe_init_interrupt_scheme(adapter);
9741 if (err)
9742 goto err_sw_init;
9743
9744 /* WOL not supported for all devices */
9745 adapter->wol = 0;
9746 hw->eeprom.ops.read(hw, 0x2c, &adapter->eeprom_cap);
9747 hw->wol_enabled = ixgbe_wol_supported(adapter, pdev->device,
9748 pdev->subsystem_device);
9749 if (hw->wol_enabled)
9750 adapter->wol = IXGBE_WUFC_MAG;
9751
9752 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
9753
9754 /* save off EEPROM version number */
9755 hw->eeprom.ops.read(hw, 0x2e, &adapter->eeprom_verh);
9756 hw->eeprom.ops.read(hw, 0x2d, &adapter->eeprom_verl);
9757
9758 /* pick up the PCI bus settings for reporting later */
9759 if (ixgbe_pcie_from_parent(hw))
9760 ixgbe_get_parent_bus_info(adapter);
9761 else
9762 hw->mac.ops.get_bus_info(hw);
9763
9764 /* calculate the expected PCIe bandwidth required for optimal
9765 * performance. Note that some older parts will never have enough
9766 * bandwidth due to being older generation PCIe parts. We clamp these
9767 * parts to ensure no warning is displayed if it can't be fixed.
9768 */
9769 switch (hw->mac.type) {
9770 case ixgbe_mac_82598EB:
9771 expected_gts = min(ixgbe_enumerate_functions(adapter) * 10, 16);
9772 break;
9773 default:
9774 expected_gts = ixgbe_enumerate_functions(adapter) * 10;
9775 break;
9776 }
9777
9778 /* don't check link if we failed to enumerate functions */
9779 if (expected_gts > 0)
9780 ixgbe_check_minimum_link(adapter, expected_gts);
9781
9782 err = ixgbe_read_pba_string_generic(hw, part_str, sizeof(part_str));
9783 if (err)
9784 strlcpy(part_str, "Unknown", sizeof(part_str));
9785 if (ixgbe_is_sfp(hw) && hw->phy.sfp_type != ixgbe_sfp_type_not_present)
9786 e_dev_info("MAC: %d, PHY: %d, SFP+: %d, PBA No: %s\n",
9787 hw->mac.type, hw->phy.type, hw->phy.sfp_type,
9788 part_str);
9789 else
9790 e_dev_info("MAC: %d, PHY: %d, PBA No: %s\n",
9791 hw->mac.type, hw->phy.type, part_str);
9792
9793 e_dev_info("%pM\n", netdev->dev_addr);
9794
9795 /* reset the hardware with the new settings */
9796 err = hw->mac.ops.start_hw(hw);
9797 if (err == IXGBE_ERR_EEPROM_VERSION) {
9798 /* We are running on a pre-production device, log a warning */
9799 e_dev_warn("This device is a pre-production adapter/LOM. "
9800 "Please be aware there may be issues associated "
9801 "with your hardware. If you are experiencing "
9802 "problems please contact your Intel or hardware "
9803 "representative who provided you with this "
9804 "hardware.\n");
9805 }
9806 strcpy(netdev->name, "eth%d");
9807 err = register_netdev(netdev);
9808 if (err)
9809 goto err_register;
9810
9811 pci_set_drvdata(pdev, adapter);
9812
9813 /* power down the optics for 82599 SFP+ fiber */
9814 if (hw->mac.ops.disable_tx_laser)
9815 hw->mac.ops.disable_tx_laser(hw);
9816
9817 /* carrier off reporting is important to ethtool even BEFORE open */
9818 netif_carrier_off(netdev);
9819
9820 #ifdef CONFIG_IXGBE_DCA
9821 if (dca_add_requester(&pdev->dev) == 0) {
9822 adapter->flags |= IXGBE_FLAG_DCA_ENABLED;
9823 ixgbe_setup_dca(adapter);
9824 }
9825 #endif
9826 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) {
9827 e_info(probe, "IOV is enabled with %d VFs\n", adapter->num_vfs);
9828 for (i = 0; i < adapter->num_vfs; i++)
9829 ixgbe_vf_configuration(pdev, (i | 0x10000000));
9830 }
9831
9832 /* firmware requires driver version to be 0xFFFFFFFF
9833 * since os does not support feature
9834 */
9835 if (hw->mac.ops.set_fw_drv_ver)
9836 hw->mac.ops.set_fw_drv_ver(hw, 0xFF, 0xFF, 0xFF,
9837 0xFF);
9838
9839 /* add san mac addr to netdev */
9840 ixgbe_add_sanmac_netdev(netdev);
9841
9842 e_dev_info("%s\n", ixgbe_default_device_descr);
9843
9844 #ifdef CONFIG_IXGBE_HWMON
9845 if (ixgbe_sysfs_init(adapter))
9846 e_err(probe, "failed to allocate sysfs resources\n");
9847 #endif /* CONFIG_IXGBE_HWMON */
9848
9849 ixgbe_dbg_adapter_init(adapter);
9850
9851 /* setup link for SFP devices with MNG FW, else wait for IXGBE_UP */
9852 if (ixgbe_mng_enabled(hw) && ixgbe_is_sfp(hw) && hw->mac.ops.setup_link)
9853 hw->mac.ops.setup_link(hw,
9854 IXGBE_LINK_SPEED_10GB_FULL | IXGBE_LINK_SPEED_1GB_FULL,
9855 true);
9856
9857 return 0;
9858
9859 err_register:
9860 ixgbe_release_hw_control(adapter);
9861 ixgbe_clear_interrupt_scheme(adapter);
9862 err_sw_init:
9863 ixgbe_disable_sriov(adapter);
9864 adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP;
9865 iounmap(adapter->io_addr);
9866 kfree(adapter->jump_tables[0]);
9867 kfree(adapter->mac_table);
9868 err_ioremap:
9869 disable_dev = !test_and_set_bit(__IXGBE_DISABLED, &adapter->state);
9870 free_netdev(netdev);
9871 err_alloc_etherdev:
9872 pci_release_mem_regions(pdev);
9873 err_pci_reg:
9874 err_dma:
9875 if (!adapter || disable_dev)
9876 pci_disable_device(pdev);
9877 return err;
9878 }
9879
9880 /**
9881 * ixgbe_remove - Device Removal Routine
9882 * @pdev: PCI device information struct
9883 *
9884 * ixgbe_remove is called by the PCI subsystem to alert the driver
9885 * that it should release a PCI device. The could be caused by a
9886 * Hot-Plug event, or because the driver is going to be removed from
9887 * memory.
9888 **/
9889 static void ixgbe_remove(struct pci_dev *pdev)
9890 {
9891 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
9892 struct net_device *netdev;
9893 bool disable_dev;
9894 int i;
9895
9896 /* if !adapter then we already cleaned up in probe */
9897 if (!adapter)
9898 return;
9899
9900 netdev = adapter->netdev;
9901 ixgbe_dbg_adapter_exit(adapter);
9902
9903 set_bit(__IXGBE_REMOVING, &adapter->state);
9904 cancel_work_sync(&adapter->service_task);
9905
9906
9907 #ifdef CONFIG_IXGBE_DCA
9908 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) {
9909 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED;
9910 dca_remove_requester(&pdev->dev);
9911 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL,
9912 IXGBE_DCA_CTRL_DCA_DISABLE);
9913 }
9914
9915 #endif
9916 #ifdef CONFIG_IXGBE_HWMON
9917 ixgbe_sysfs_exit(adapter);
9918 #endif /* CONFIG_IXGBE_HWMON */
9919
9920 /* remove the added san mac */
9921 ixgbe_del_sanmac_netdev(netdev);
9922
9923 #ifdef CONFIG_PCI_IOV
9924 ixgbe_disable_sriov(adapter);
9925 #endif
9926 if (netdev->reg_state == NETREG_REGISTERED)
9927 unregister_netdev(netdev);
9928
9929 ixgbe_clear_interrupt_scheme(adapter);
9930
9931 ixgbe_release_hw_control(adapter);
9932
9933 #ifdef CONFIG_DCB
9934 kfree(adapter->ixgbe_ieee_pfc);
9935 kfree(adapter->ixgbe_ieee_ets);
9936
9937 #endif
9938 iounmap(adapter->io_addr);
9939 pci_release_mem_regions(pdev);
9940
9941 e_dev_info("complete\n");
9942
9943 for (i = 0; i < IXGBE_MAX_LINK_HANDLE; i++) {
9944 if (adapter->jump_tables[i]) {
9945 kfree(adapter->jump_tables[i]->input);
9946 kfree(adapter->jump_tables[i]->mask);
9947 }
9948 kfree(adapter->jump_tables[i]);
9949 }
9950
9951 kfree(adapter->mac_table);
9952 disable_dev = !test_and_set_bit(__IXGBE_DISABLED, &adapter->state);
9953 free_netdev(netdev);
9954
9955 pci_disable_pcie_error_reporting(pdev);
9956
9957 if (disable_dev)
9958 pci_disable_device(pdev);
9959 }
9960
9961 /**
9962 * ixgbe_io_error_detected - called when PCI error is detected
9963 * @pdev: Pointer to PCI device
9964 * @state: The current pci connection state
9965 *
9966 * This function is called after a PCI bus error affecting
9967 * this device has been detected.
9968 */
9969 static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev,
9970 pci_channel_state_t state)
9971 {
9972 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
9973 struct net_device *netdev = adapter->netdev;
9974
9975 #ifdef CONFIG_PCI_IOV
9976 struct ixgbe_hw *hw = &adapter->hw;
9977 struct pci_dev *bdev, *vfdev;
9978 u32 dw0, dw1, dw2, dw3;
9979 int vf, pos;
9980 u16 req_id, pf_func;
9981
9982 if (adapter->hw.mac.type == ixgbe_mac_82598EB ||
9983 adapter->num_vfs == 0)
9984 goto skip_bad_vf_detection;
9985
9986 bdev = pdev->bus->self;
9987 while (bdev && (pci_pcie_type(bdev) != PCI_EXP_TYPE_ROOT_PORT))
9988 bdev = bdev->bus->self;
9989
9990 if (!bdev)
9991 goto skip_bad_vf_detection;
9992
9993 pos = pci_find_ext_capability(bdev, PCI_EXT_CAP_ID_ERR);
9994 if (!pos)
9995 goto skip_bad_vf_detection;
9996
9997 dw0 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG);
9998 dw1 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 4);
9999 dw2 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 8);
10000 dw3 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 12);
10001 if (ixgbe_removed(hw->hw_addr))
10002 goto skip_bad_vf_detection;
10003
10004 req_id = dw1 >> 16;
10005 /* On the 82599 if bit 7 of the requestor ID is set then it's a VF */
10006 if (!(req_id & 0x0080))
10007 goto skip_bad_vf_detection;
10008
10009 pf_func = req_id & 0x01;
10010 if ((pf_func & 1) == (pdev->devfn & 1)) {
10011 unsigned int device_id;
10012
10013 vf = (req_id & 0x7F) >> 1;
10014 e_dev_err("VF %d has caused a PCIe error\n", vf);
10015 e_dev_err("TLP: dw0: %8.8x\tdw1: %8.8x\tdw2: "
10016 "%8.8x\tdw3: %8.8x\n",
10017 dw0, dw1, dw2, dw3);
10018 switch (adapter->hw.mac.type) {
10019 case ixgbe_mac_82599EB:
10020 device_id = IXGBE_82599_VF_DEVICE_ID;
10021 break;
10022 case ixgbe_mac_X540:
10023 device_id = IXGBE_X540_VF_DEVICE_ID;
10024 break;
10025 case ixgbe_mac_X550:
10026 device_id = IXGBE_DEV_ID_X550_VF;
10027 break;
10028 case ixgbe_mac_X550EM_x:
10029 device_id = IXGBE_DEV_ID_X550EM_X_VF;
10030 break;
10031 case ixgbe_mac_x550em_a:
10032 device_id = IXGBE_DEV_ID_X550EM_A_VF;
10033 break;
10034 default:
10035 device_id = 0;
10036 break;
10037 }
10038
10039 /* Find the pci device of the offending VF */
10040 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, device_id, NULL);
10041 while (vfdev) {
10042 if (vfdev->devfn == (req_id & 0xFF))
10043 break;
10044 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL,
10045 device_id, vfdev);
10046 }
10047 /*
10048 * There's a slim chance the VF could have been hot plugged,
10049 * so if it is no longer present we don't need to issue the
10050 * VFLR. Just clean up the AER in that case.
10051 */
10052 if (vfdev) {
10053 ixgbe_issue_vf_flr(adapter, vfdev);
10054 /* Free device reference count */
10055 pci_dev_put(vfdev);
10056 }
10057
10058 pci_cleanup_aer_uncorrect_error_status(pdev);
10059 }
10060
10061 /*
10062 * Even though the error may have occurred on the other port
10063 * we still need to increment the vf error reference count for
10064 * both ports because the I/O resume function will be called
10065 * for both of them.
10066 */
10067 adapter->vferr_refcount++;
10068
10069 return PCI_ERS_RESULT_RECOVERED;
10070
10071 skip_bad_vf_detection:
10072 #endif /* CONFIG_PCI_IOV */
10073 if (!test_bit(__IXGBE_SERVICE_INITED, &adapter->state))
10074 return PCI_ERS_RESULT_DISCONNECT;
10075
10076 rtnl_lock();
10077 netif_device_detach(netdev);
10078
10079 if (state == pci_channel_io_perm_failure) {
10080 rtnl_unlock();
10081 return PCI_ERS_RESULT_DISCONNECT;
10082 }
10083
10084 if (netif_running(netdev))
10085 ixgbe_down(adapter);
10086
10087 if (!test_and_set_bit(__IXGBE_DISABLED, &adapter->state))
10088 pci_disable_device(pdev);
10089 rtnl_unlock();
10090
10091 /* Request a slot reset. */
10092 return PCI_ERS_RESULT_NEED_RESET;
10093 }
10094
10095 /**
10096 * ixgbe_io_slot_reset - called after the pci bus has been reset.
10097 * @pdev: Pointer to PCI device
10098 *
10099 * Restart the card from scratch, as if from a cold-boot.
10100 */
10101 static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev)
10102 {
10103 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
10104 pci_ers_result_t result;
10105 int err;
10106
10107 if (pci_enable_device_mem(pdev)) {
10108 e_err(probe, "Cannot re-enable PCI device after reset.\n");
10109 result = PCI_ERS_RESULT_DISCONNECT;
10110 } else {
10111 smp_mb__before_atomic();
10112 clear_bit(__IXGBE_DISABLED, &adapter->state);
10113 adapter->hw.hw_addr = adapter->io_addr;
10114 pci_set_master(pdev);
10115 pci_restore_state(pdev);
10116 pci_save_state(pdev);
10117
10118 pci_wake_from_d3(pdev, false);
10119
10120 ixgbe_reset(adapter);
10121 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0);
10122 result = PCI_ERS_RESULT_RECOVERED;
10123 }
10124
10125 err = pci_cleanup_aer_uncorrect_error_status(pdev);
10126 if (err) {
10127 e_dev_err("pci_cleanup_aer_uncorrect_error_status "
10128 "failed 0x%0x\n", err);
10129 /* non-fatal, continue */
10130 }
10131
10132 return result;
10133 }
10134
10135 /**
10136 * ixgbe_io_resume - called when traffic can start flowing again.
10137 * @pdev: Pointer to PCI device
10138 *
10139 * This callback is called when the error recovery driver tells us that
10140 * its OK to resume normal operation.
10141 */
10142 static void ixgbe_io_resume(struct pci_dev *pdev)
10143 {
10144 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
10145 struct net_device *netdev = adapter->netdev;
10146
10147 #ifdef CONFIG_PCI_IOV
10148 if (adapter->vferr_refcount) {
10149 e_info(drv, "Resuming after VF err\n");
10150 adapter->vferr_refcount--;
10151 return;
10152 }
10153
10154 #endif
10155 if (netif_running(netdev))
10156 ixgbe_up(adapter);
10157
10158 netif_device_attach(netdev);
10159 }
10160
10161 static const struct pci_error_handlers ixgbe_err_handler = {
10162 .error_detected = ixgbe_io_error_detected,
10163 .slot_reset = ixgbe_io_slot_reset,
10164 .resume = ixgbe_io_resume,
10165 };
10166
10167 static struct pci_driver ixgbe_driver = {
10168 .name = ixgbe_driver_name,
10169 .id_table = ixgbe_pci_tbl,
10170 .probe = ixgbe_probe,
10171 .remove = ixgbe_remove,
10172 #ifdef CONFIG_PM
10173 .suspend = ixgbe_suspend,
10174 .resume = ixgbe_resume,
10175 #endif
10176 .shutdown = ixgbe_shutdown,
10177 .sriov_configure = ixgbe_pci_sriov_configure,
10178 .err_handler = &ixgbe_err_handler
10179 };
10180
10181 /**
10182 * ixgbe_init_module - Driver Registration Routine
10183 *
10184 * ixgbe_init_module is the first routine called when the driver is
10185 * loaded. All it does is register with the PCI subsystem.
10186 **/
10187 static int __init ixgbe_init_module(void)
10188 {
10189 int ret;
10190 pr_info("%s - version %s\n", ixgbe_driver_string, ixgbe_driver_version);
10191 pr_info("%s\n", ixgbe_copyright);
10192
10193 ixgbe_wq = create_singlethread_workqueue(ixgbe_driver_name);
10194 if (!ixgbe_wq) {
10195 pr_err("%s: Failed to create workqueue\n", ixgbe_driver_name);
10196 return -ENOMEM;
10197 }
10198
10199 ixgbe_dbg_init();
10200
10201 ret = pci_register_driver(&ixgbe_driver);
10202 if (ret) {
10203 destroy_workqueue(ixgbe_wq);
10204 ixgbe_dbg_exit();
10205 return ret;
10206 }
10207
10208 #ifdef CONFIG_IXGBE_DCA
10209 dca_register_notify(&dca_notifier);
10210 #endif
10211
10212 return 0;
10213 }
10214
10215 module_init(ixgbe_init_module);
10216
10217 /**
10218 * ixgbe_exit_module - Driver Exit Cleanup Routine
10219 *
10220 * ixgbe_exit_module is called just before the driver is removed
10221 * from memory.
10222 **/
10223 static void __exit ixgbe_exit_module(void)
10224 {
10225 #ifdef CONFIG_IXGBE_DCA
10226 dca_unregister_notify(&dca_notifier);
10227 #endif
10228 pci_unregister_driver(&ixgbe_driver);
10229
10230 ixgbe_dbg_exit();
10231 if (ixgbe_wq) {
10232 destroy_workqueue(ixgbe_wq);
10233 ixgbe_wq = NULL;
10234 }
10235 }
10236
10237 #ifdef CONFIG_IXGBE_DCA
10238 static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event,
10239 void *p)
10240 {
10241 int ret_val;
10242
10243 ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event,
10244 __ixgbe_notify_dca);
10245
10246 return ret_val ? NOTIFY_BAD : NOTIFY_DONE;
10247 }
10248
10249 #endif /* CONFIG_IXGBE_DCA */
10250
10251 module_exit(ixgbe_exit_module);
10252
10253 /* ixgbe_main.c */
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