1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2016 Intel Corporation.
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.
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
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.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
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
27 *******************************************************************************/
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>
36 #include <linux/interrupt.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>
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>
59 #include "ixgbe_common.h"
60 #include "ixgbe_dcb_82599.h"
61 #include "ixgbe_sriov.h"
62 #include "ixgbe_model.h"
64 char ixgbe_driver_name
[] = "ixgbe";
65 static const char ixgbe_driver_string
[] =
66 "Intel(R) 10 Gigabit PCI Express Network Driver";
68 char ixgbe_default_device_descr
[] =
69 "Intel(R) 10 Gigabit Network Connection";
71 static char ixgbe_default_device_descr
[] =
72 "Intel(R) 10 Gigabit Network Connection";
74 #define DRV_VERSION "4.4.0-k"
75 const char ixgbe_driver_version
[] = DRV_VERSION
;
76 static const char ixgbe_copyright
[] =
77 "Copyright (c) 1999-2016 Intel Corporation.";
79 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 static const struct ixgbe_info
*ixgbe_info_tbl
[] = {
82 [board_82598
] = &ixgbe_82598_info
,
83 [board_82599
] = &ixgbe_82599_info
,
84 [board_X540
] = &ixgbe_X540_info
,
85 [board_X550
] = &ixgbe_X550_info
,
86 [board_X550EM_x
] = &ixgbe_X550EM_x_info
,
87 [board_x550em_a
] = &ixgbe_x550em_a_info
,
90 /* ixgbe_pci_tbl - PCI Device ID Table
92 * Wildcard entries (PCI_ANY_ID) should come last
93 * Last entry must be all 0s
95 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
96 * Class, Class Mask, private data (not used) }
98 static const struct pci_device_id ixgbe_pci_tbl
[] = {
99 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598
), board_82598
},
100 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598AF_DUAL_PORT
), board_82598
},
101 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598AF_SINGLE_PORT
), board_82598
},
102 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598AT
), board_82598
},
103 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598AT2
), board_82598
},
104 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598EB_CX4
), board_82598
},
105 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598_CX4_DUAL_PORT
), board_82598
},
106 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598_DA_DUAL_PORT
), board_82598
},
107 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM
), board_82598
},
108 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598EB_XF_LR
), board_82598
},
109 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598EB_SFP_LOM
), board_82598
},
110 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82598_BX
), board_82598
},
111 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_KX4
), board_82599
},
112 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_XAUI_LOM
), board_82599
},
113 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_KR
), board_82599
},
114 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_SFP
), board_82599
},
115 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_SFP_EM
), board_82599
},
116 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_KX4_MEZZ
), board_82599
},
117 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_CX4
), board_82599
},
118 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_BACKPLANE_FCOE
), board_82599
},
119 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_SFP_FCOE
), board_82599
},
120 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_T3_LOM
), board_82599
},
121 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_COMBO_BACKPLANE
), board_82599
},
122 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X540T
), board_X540
},
123 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_SFP_SF2
), board_82599
},
124 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_LS
), board_82599
},
125 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_QSFP_SF_QP
), board_82599
},
126 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599EN_SFP
), board_82599
},
127 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_82599_SFP_SF_QP
), board_82599
},
128 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X540T1
), board_X540
},
129 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550T
), board_X550
},
130 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550T1
), board_X550
},
131 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_X_KX4
), board_X550EM_x
},
132 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_X_KR
), board_X550EM_x
},
133 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_X_10G_T
), board_X550EM_x
},
134 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_X_SFP
), board_X550EM_x
},
135 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_A_KR
), board_x550em_a
},
136 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_A_KR_L
), board_x550em_a
},
137 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_A_SFP_N
), board_x550em_a
},
138 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_A_SGMII
), board_x550em_a
},
139 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_A_SGMII_L
), board_x550em_a
},
140 {PCI_VDEVICE(INTEL
, IXGBE_DEV_ID_X550EM_A_SFP
), board_x550em_a
},
141 /* required last entry */
144 MODULE_DEVICE_TABLE(pci
, ixgbe_pci_tbl
);
146 #ifdef CONFIG_IXGBE_DCA
147 static int ixgbe_notify_dca(struct notifier_block
*, unsigned long event
,
149 static struct notifier_block dca_notifier
= {
150 .notifier_call
= ixgbe_notify_dca
,
156 #ifdef CONFIG_PCI_IOV
157 static unsigned int max_vfs
;
158 module_param(max_vfs
, uint
, 0);
159 MODULE_PARM_DESC(max_vfs
,
160 "Maximum number of virtual functions to allocate per physical function - default is zero and maximum value is 63. (Deprecated)");
161 #endif /* CONFIG_PCI_IOV */
163 static unsigned int allow_unsupported_sfp
;
164 module_param(allow_unsupported_sfp
, uint
, 0);
165 MODULE_PARM_DESC(allow_unsupported_sfp
,
166 "Allow unsupported and untested SFP+ modules on 82599-based adapters");
168 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK)
169 static int debug
= -1;
170 module_param(debug
, int, 0);
171 MODULE_PARM_DESC(debug
, "Debug level (0=none,...,16=all)");
173 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
174 MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver");
175 MODULE_LICENSE("GPL");
176 MODULE_VERSION(DRV_VERSION
);
178 static struct workqueue_struct
*ixgbe_wq
;
180 static bool ixgbe_check_cfg_remove(struct ixgbe_hw
*hw
, struct pci_dev
*pdev
);
182 static int ixgbe_read_pci_cfg_word_parent(struct ixgbe_adapter
*adapter
,
185 struct pci_dev
*parent_dev
;
186 struct pci_bus
*parent_bus
;
188 parent_bus
= adapter
->pdev
->bus
->parent
;
192 parent_dev
= parent_bus
->self
;
196 if (!pci_is_pcie(parent_dev
))
199 pcie_capability_read_word(parent_dev
, reg
, value
);
200 if (*value
== IXGBE_FAILED_READ_CFG_WORD
&&
201 ixgbe_check_cfg_remove(&adapter
->hw
, parent_dev
))
206 static s32
ixgbe_get_parent_bus_info(struct ixgbe_adapter
*adapter
)
208 struct ixgbe_hw
*hw
= &adapter
->hw
;
212 hw
->bus
.type
= ixgbe_bus_type_pci_express
;
214 /* Get the negotiated link width and speed from PCI config space of the
215 * parent, as this device is behind a switch
217 err
= ixgbe_read_pci_cfg_word_parent(adapter
, 18, &link_status
);
219 /* assume caller will handle error case */
223 hw
->bus
.width
= ixgbe_convert_bus_width(link_status
);
224 hw
->bus
.speed
= ixgbe_convert_bus_speed(link_status
);
230 * ixgbe_check_from_parent - Determine whether PCIe info should come from parent
231 * @hw: hw specific details
233 * This function is used by probe to determine whether a device's PCI-Express
234 * bandwidth details should be gathered from the parent bus instead of from the
235 * device. Used to ensure that various locations all have the correct device ID
238 static inline bool ixgbe_pcie_from_parent(struct ixgbe_hw
*hw
)
240 switch (hw
->device_id
) {
241 case IXGBE_DEV_ID_82599_SFP_SF_QP
:
242 case IXGBE_DEV_ID_82599_QSFP_SF_QP
:
249 static void ixgbe_check_minimum_link(struct ixgbe_adapter
*adapter
,
252 struct ixgbe_hw
*hw
= &adapter
->hw
;
254 enum pci_bus_speed speed
= PCI_SPEED_UNKNOWN
;
255 enum pcie_link_width width
= PCIE_LNK_WIDTH_UNKNOWN
;
256 struct pci_dev
*pdev
;
258 /* Some devices are not connected over PCIe and thus do not negotiate
259 * speed. These devices do not have valid bus info, and thus any report
260 * we generate may not be correct.
262 if (hw
->bus
.type
== ixgbe_bus_type_internal
)
265 /* determine whether to use the parent device */
266 if (ixgbe_pcie_from_parent(&adapter
->hw
))
267 pdev
= adapter
->pdev
->bus
->parent
->self
;
269 pdev
= adapter
->pdev
;
271 if (pcie_get_minimum_link(pdev
, &speed
, &width
) ||
272 speed
== PCI_SPEED_UNKNOWN
|| width
== PCIE_LNK_WIDTH_UNKNOWN
) {
273 e_dev_warn("Unable to determine PCI Express bandwidth.\n");
278 case PCIE_SPEED_2_5GT
:
279 /* 8b/10b encoding reduces max throughput by 20% */
282 case PCIE_SPEED_5_0GT
:
283 /* 8b/10b encoding reduces max throughput by 20% */
286 case PCIE_SPEED_8_0GT
:
287 /* 128b/130b encoding reduces throughput by less than 2% */
291 e_dev_warn("Unable to determine PCI Express bandwidth.\n");
295 e_dev_info("PCI Express bandwidth of %dGT/s available\n",
297 e_dev_info("(Speed:%s, Width: x%d, Encoding Loss:%s)\n",
298 (speed
== PCIE_SPEED_8_0GT
? "8.0GT/s" :
299 speed
== PCIE_SPEED_5_0GT
? "5.0GT/s" :
300 speed
== PCIE_SPEED_2_5GT
? "2.5GT/s" :
303 (speed
== PCIE_SPEED_2_5GT
? "20%" :
304 speed
== PCIE_SPEED_5_0GT
? "20%" :
305 speed
== PCIE_SPEED_8_0GT
? "<2%" :
308 if (max_gts
< expected_gts
) {
309 e_dev_warn("This is not sufficient for optimal performance of this card.\n");
310 e_dev_warn("For optimal performance, at least %dGT/s of bandwidth is required.\n",
312 e_dev_warn("A slot with more lanes and/or higher speed is suggested.\n");
316 static void ixgbe_service_event_schedule(struct ixgbe_adapter
*adapter
)
318 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
) &&
319 !test_bit(__IXGBE_REMOVING
, &adapter
->state
) &&
320 !test_and_set_bit(__IXGBE_SERVICE_SCHED
, &adapter
->state
))
321 queue_work(ixgbe_wq
, &adapter
->service_task
);
324 static void ixgbe_remove_adapter(struct ixgbe_hw
*hw
)
326 struct ixgbe_adapter
*adapter
= hw
->back
;
331 e_dev_err("Adapter removed\n");
332 if (test_bit(__IXGBE_SERVICE_INITED
, &adapter
->state
))
333 ixgbe_service_event_schedule(adapter
);
336 static void ixgbe_check_remove(struct ixgbe_hw
*hw
, u32 reg
)
340 /* The following check not only optimizes a bit by not
341 * performing a read on the status register when the
342 * register just read was a status register read that
343 * returned IXGBE_FAILED_READ_REG. It also blocks any
344 * potential recursion.
346 if (reg
== IXGBE_STATUS
) {
347 ixgbe_remove_adapter(hw
);
350 value
= ixgbe_read_reg(hw
, IXGBE_STATUS
);
351 if (value
== IXGBE_FAILED_READ_REG
)
352 ixgbe_remove_adapter(hw
);
356 * ixgbe_read_reg - Read from device register
357 * @hw: hw specific details
358 * @reg: offset of register to read
360 * Returns : value read or IXGBE_FAILED_READ_REG if removed
362 * This function is used to read device registers. It checks for device
363 * removal by confirming any read that returns all ones by checking the
364 * status register value for all ones. This function avoids reading from
365 * the hardware if a removal was previously detected in which case it
366 * returns IXGBE_FAILED_READ_REG (all ones).
368 u32
ixgbe_read_reg(struct ixgbe_hw
*hw
, u32 reg
)
370 u8 __iomem
*reg_addr
= ACCESS_ONCE(hw
->hw_addr
);
373 if (ixgbe_removed(reg_addr
))
374 return IXGBE_FAILED_READ_REG
;
375 if (unlikely(hw
->phy
.nw_mng_if_sel
&
376 IXGBE_NW_MNG_IF_SEL_ENABLE_10_100M
)) {
377 struct ixgbe_adapter
*adapter
;
380 for (i
= 0; i
< 200; ++i
) {
381 value
= readl(reg_addr
+ IXGBE_MAC_SGMII_BUSY
);
383 goto writes_completed
;
384 if (value
== IXGBE_FAILED_READ_REG
) {
385 ixgbe_remove_adapter(hw
);
386 return IXGBE_FAILED_READ_REG
;
392 e_warn(hw
, "register writes incomplete %08x\n", value
);
396 value
= readl(reg_addr
+ reg
);
397 if (unlikely(value
== IXGBE_FAILED_READ_REG
))
398 ixgbe_check_remove(hw
, reg
);
402 static bool ixgbe_check_cfg_remove(struct ixgbe_hw
*hw
, struct pci_dev
*pdev
)
406 pci_read_config_word(pdev
, PCI_VENDOR_ID
, &value
);
407 if (value
== IXGBE_FAILED_READ_CFG_WORD
) {
408 ixgbe_remove_adapter(hw
);
414 u16
ixgbe_read_pci_cfg_word(struct ixgbe_hw
*hw
, u32 reg
)
416 struct ixgbe_adapter
*adapter
= hw
->back
;
419 if (ixgbe_removed(hw
->hw_addr
))
420 return IXGBE_FAILED_READ_CFG_WORD
;
421 pci_read_config_word(adapter
->pdev
, reg
, &value
);
422 if (value
== IXGBE_FAILED_READ_CFG_WORD
&&
423 ixgbe_check_cfg_remove(hw
, adapter
->pdev
))
424 return IXGBE_FAILED_READ_CFG_WORD
;
428 #ifdef CONFIG_PCI_IOV
429 static u32
ixgbe_read_pci_cfg_dword(struct ixgbe_hw
*hw
, u32 reg
)
431 struct ixgbe_adapter
*adapter
= hw
->back
;
434 if (ixgbe_removed(hw
->hw_addr
))
435 return IXGBE_FAILED_READ_CFG_DWORD
;
436 pci_read_config_dword(adapter
->pdev
, reg
, &value
);
437 if (value
== IXGBE_FAILED_READ_CFG_DWORD
&&
438 ixgbe_check_cfg_remove(hw
, adapter
->pdev
))
439 return IXGBE_FAILED_READ_CFG_DWORD
;
442 #endif /* CONFIG_PCI_IOV */
444 void ixgbe_write_pci_cfg_word(struct ixgbe_hw
*hw
, u32 reg
, u16 value
)
446 struct ixgbe_adapter
*adapter
= hw
->back
;
448 if (ixgbe_removed(hw
->hw_addr
))
450 pci_write_config_word(adapter
->pdev
, reg
, value
);
453 static void ixgbe_service_event_complete(struct ixgbe_adapter
*adapter
)
455 BUG_ON(!test_bit(__IXGBE_SERVICE_SCHED
, &adapter
->state
));
457 /* flush memory to make sure state is correct before next watchdog */
458 smp_mb__before_atomic();
459 clear_bit(__IXGBE_SERVICE_SCHED
, &adapter
->state
);
462 struct ixgbe_reg_info
{
467 static const struct ixgbe_reg_info ixgbe_reg_info_tbl
[] = {
469 /* General Registers */
470 {IXGBE_CTRL
, "CTRL"},
471 {IXGBE_STATUS
, "STATUS"},
472 {IXGBE_CTRL_EXT
, "CTRL_EXT"},
474 /* Interrupt Registers */
475 {IXGBE_EICR
, "EICR"},
478 {IXGBE_SRRCTL(0), "SRRCTL"},
479 {IXGBE_DCA_RXCTRL(0), "DRXCTL"},
480 {IXGBE_RDLEN(0), "RDLEN"},
481 {IXGBE_RDH(0), "RDH"},
482 {IXGBE_RDT(0), "RDT"},
483 {IXGBE_RXDCTL(0), "RXDCTL"},
484 {IXGBE_RDBAL(0), "RDBAL"},
485 {IXGBE_RDBAH(0), "RDBAH"},
488 {IXGBE_TDBAL(0), "TDBAL"},
489 {IXGBE_TDBAH(0), "TDBAH"},
490 {IXGBE_TDLEN(0), "TDLEN"},
491 {IXGBE_TDH(0), "TDH"},
492 {IXGBE_TDT(0), "TDT"},
493 {IXGBE_TXDCTL(0), "TXDCTL"},
495 /* List Terminator */
501 * ixgbe_regdump - register printout routine
503 static void ixgbe_regdump(struct ixgbe_hw
*hw
, struct ixgbe_reg_info
*reginfo
)
509 switch (reginfo
->ofs
) {
510 case IXGBE_SRRCTL(0):
511 for (i
= 0; i
< 64; i
++)
512 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_SRRCTL(i
));
514 case IXGBE_DCA_RXCTRL(0):
515 for (i
= 0; i
< 64; i
++)
516 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_DCA_RXCTRL(i
));
519 for (i
= 0; i
< 64; i
++)
520 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_RDLEN(i
));
523 for (i
= 0; i
< 64; i
++)
524 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_RDH(i
));
527 for (i
= 0; i
< 64; i
++)
528 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_RDT(i
));
530 case IXGBE_RXDCTL(0):
531 for (i
= 0; i
< 64; i
++)
532 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_RXDCTL(i
));
535 for (i
= 0; i
< 64; i
++)
536 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_RDBAL(i
));
539 for (i
= 0; i
< 64; i
++)
540 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_RDBAH(i
));
543 for (i
= 0; i
< 64; i
++)
544 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_TDBAL(i
));
547 for (i
= 0; i
< 64; i
++)
548 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_TDBAH(i
));
551 for (i
= 0; i
< 64; i
++)
552 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_TDLEN(i
));
555 for (i
= 0; i
< 64; i
++)
556 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_TDH(i
));
559 for (i
= 0; i
< 64; i
++)
560 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_TDT(i
));
562 case IXGBE_TXDCTL(0):
563 for (i
= 0; i
< 64; i
++)
564 regs
[i
] = IXGBE_READ_REG(hw
, IXGBE_TXDCTL(i
));
567 pr_info("%-15s %08x\n", reginfo
->name
,
568 IXGBE_READ_REG(hw
, reginfo
->ofs
));
572 for (i
= 0; i
< 8; i
++) {
573 snprintf(rname
, 16, "%s[%d-%d]", reginfo
->name
, i
*8, i
*8+7);
574 pr_err("%-15s", rname
);
575 for (j
= 0; j
< 8; j
++)
576 pr_cont(" %08x", regs
[i
*8+j
]);
583 * ixgbe_dump - Print registers, tx-rings and rx-rings
585 static void ixgbe_dump(struct ixgbe_adapter
*adapter
)
587 struct net_device
*netdev
= adapter
->netdev
;
588 struct ixgbe_hw
*hw
= &adapter
->hw
;
589 struct ixgbe_reg_info
*reginfo
;
591 struct ixgbe_ring
*tx_ring
;
592 struct ixgbe_tx_buffer
*tx_buffer
;
593 union ixgbe_adv_tx_desc
*tx_desc
;
594 struct my_u0
{ u64 a
; u64 b
; } *u0
;
595 struct ixgbe_ring
*rx_ring
;
596 union ixgbe_adv_rx_desc
*rx_desc
;
597 struct ixgbe_rx_buffer
*rx_buffer_info
;
601 if (!netif_msg_hw(adapter
))
604 /* Print netdevice Info */
606 dev_info(&adapter
->pdev
->dev
, "Net device Info\n");
607 pr_info("Device Name state "
608 "trans_start last_rx\n");
609 pr_info("%-15s %016lX %016lX %016lX\n",
612 dev_trans_start(netdev
),
616 /* Print Registers */
617 dev_info(&adapter
->pdev
->dev
, "Register Dump\n");
618 pr_info(" Register Name Value\n");
619 for (reginfo
= (struct ixgbe_reg_info
*)ixgbe_reg_info_tbl
;
620 reginfo
->name
; reginfo
++) {
621 ixgbe_regdump(hw
, reginfo
);
624 /* Print TX Ring Summary */
625 if (!netdev
|| !netif_running(netdev
))
628 dev_info(&adapter
->pdev
->dev
, "TX Rings Summary\n");
629 pr_info(" %s %s %s %s\n",
630 "Queue [NTU] [NTC] [bi(ntc)->dma ]",
631 "leng", "ntw", "timestamp");
632 for (n
= 0; n
< adapter
->num_tx_queues
; n
++) {
633 tx_ring
= adapter
->tx_ring
[n
];
634 tx_buffer
= &tx_ring
->tx_buffer_info
[tx_ring
->next_to_clean
];
635 pr_info(" %5d %5X %5X %016llX %08X %p %016llX\n",
636 n
, tx_ring
->next_to_use
, tx_ring
->next_to_clean
,
637 (u64
)dma_unmap_addr(tx_buffer
, dma
),
638 dma_unmap_len(tx_buffer
, len
),
639 tx_buffer
->next_to_watch
,
640 (u64
)tx_buffer
->time_stamp
);
644 if (!netif_msg_tx_done(adapter
))
645 goto rx_ring_summary
;
647 dev_info(&adapter
->pdev
->dev
, "TX Rings Dump\n");
649 /* Transmit Descriptor Formats
651 * 82598 Advanced Transmit Descriptor
652 * +--------------------------------------------------------------+
653 * 0 | Buffer Address [63:0] |
654 * +--------------------------------------------------------------+
655 * 8 | PAYLEN | POPTS | IDX | STA | DCMD |DTYP | RSV | DTALEN |
656 * +--------------------------------------------------------------+
657 * 63 46 45 40 39 36 35 32 31 24 23 20 19 0
659 * 82598 Advanced Transmit Descriptor (Write-Back Format)
660 * +--------------------------------------------------------------+
662 * +--------------------------------------------------------------+
663 * 8 | RSV | STA | NXTSEQ |
664 * +--------------------------------------------------------------+
667 * 82599+ Advanced Transmit Descriptor
668 * +--------------------------------------------------------------+
669 * 0 | Buffer Address [63:0] |
670 * +--------------------------------------------------------------+
671 * 8 |PAYLEN |POPTS|CC|IDX |STA |DCMD |DTYP |MAC |RSV |DTALEN |
672 * +--------------------------------------------------------------+
673 * 63 46 45 40 39 38 36 35 32 31 24 23 20 19 18 17 16 15 0
675 * 82599+ Advanced Transmit Descriptor (Write-Back Format)
676 * +--------------------------------------------------------------+
678 * +--------------------------------------------------------------+
679 * 8 | RSV | STA | RSV |
680 * +--------------------------------------------------------------+
684 for (n
= 0; n
< adapter
->num_tx_queues
; n
++) {
685 tx_ring
= adapter
->tx_ring
[n
];
686 pr_info("------------------------------------\n");
687 pr_info("TX QUEUE INDEX = %d\n", tx_ring
->queue_index
);
688 pr_info("------------------------------------\n");
689 pr_info("%s%s %s %s %s %s\n",
690 "T [desc] [address 63:0 ] ",
691 "[PlPOIdStDDt Ln] [bi->dma ] ",
692 "leng", "ntw", "timestamp", "bi->skb");
694 for (i
= 0; tx_ring
->desc
&& (i
< tx_ring
->count
); i
++) {
695 tx_desc
= IXGBE_TX_DESC(tx_ring
, i
);
696 tx_buffer
= &tx_ring
->tx_buffer_info
[i
];
697 u0
= (struct my_u0
*)tx_desc
;
698 if (dma_unmap_len(tx_buffer
, len
) > 0) {
699 pr_info("T [0x%03X] %016llX %016llX %016llX %08X %p %016llX %p",
703 (u64
)dma_unmap_addr(tx_buffer
, dma
),
704 dma_unmap_len(tx_buffer
, len
),
705 tx_buffer
->next_to_watch
,
706 (u64
)tx_buffer
->time_stamp
,
708 if (i
== tx_ring
->next_to_use
&&
709 i
== tx_ring
->next_to_clean
)
711 else if (i
== tx_ring
->next_to_use
)
713 else if (i
== tx_ring
->next_to_clean
)
718 if (netif_msg_pktdata(adapter
) &&
720 print_hex_dump(KERN_INFO
, "",
721 DUMP_PREFIX_ADDRESS
, 16, 1,
722 tx_buffer
->skb
->data
,
723 dma_unmap_len(tx_buffer
, len
),
729 /* Print RX Rings Summary */
731 dev_info(&adapter
->pdev
->dev
, "RX Rings Summary\n");
732 pr_info("Queue [NTU] [NTC]\n");
733 for (n
= 0; n
< adapter
->num_rx_queues
; n
++) {
734 rx_ring
= adapter
->rx_ring
[n
];
735 pr_info("%5d %5X %5X\n",
736 n
, rx_ring
->next_to_use
, rx_ring
->next_to_clean
);
740 if (!netif_msg_rx_status(adapter
))
743 dev_info(&adapter
->pdev
->dev
, "RX Rings Dump\n");
745 /* Receive Descriptor Formats
747 * 82598 Advanced Receive Descriptor (Read) Format
749 * +-----------------------------------------------------+
750 * 0 | Packet Buffer Address [63:1] |A0/NSE|
751 * +----------------------------------------------+------+
752 * 8 | Header Buffer Address [63:1] | DD |
753 * +-----------------------------------------------------+
756 * 82598 Advanced Receive Descriptor (Write-Back) Format
758 * 63 48 47 32 31 30 21 20 16 15 4 3 0
759 * +------------------------------------------------------+
760 * 0 | RSS Hash / |SPH| HDR_LEN | RSV |Packet| RSS |
761 * | Packet | IP | | | | Type | Type |
762 * | Checksum | Ident | | | | | |
763 * +------------------------------------------------------+
764 * 8 | VLAN Tag | Length | Extended Error | Extended Status |
765 * +------------------------------------------------------+
766 * 63 48 47 32 31 20 19 0
768 * 82599+ Advanced Receive Descriptor (Read) Format
770 * +-----------------------------------------------------+
771 * 0 | Packet Buffer Address [63:1] |A0/NSE|
772 * +----------------------------------------------+------+
773 * 8 | Header Buffer Address [63:1] | DD |
774 * +-----------------------------------------------------+
777 * 82599+ Advanced Receive Descriptor (Write-Back) Format
779 * 63 48 47 32 31 30 21 20 17 16 4 3 0
780 * +------------------------------------------------------+
781 * 0 |RSS / Frag Checksum|SPH| HDR_LEN |RSC- |Packet| RSS |
782 * |/ RTT / PCoE_PARAM | | | CNT | Type | Type |
783 * |/ Flow Dir Flt ID | | | | | |
784 * +------------------------------------------------------+
785 * 8 | VLAN Tag | Length |Extended Error| Xtnd Status/NEXTP |
786 * +------------------------------------------------------+
787 * 63 48 47 32 31 20 19 0
790 for (n
= 0; n
< adapter
->num_rx_queues
; n
++) {
791 rx_ring
= adapter
->rx_ring
[n
];
792 pr_info("------------------------------------\n");
793 pr_info("RX QUEUE INDEX = %d\n", rx_ring
->queue_index
);
794 pr_info("------------------------------------\n");
796 "R [desc] [ PktBuf A0] ",
797 "[ HeadBuf DD] [bi->dma ] [bi->skb ] ",
798 "<-- Adv Rx Read format\n");
800 "RWB[desc] [PcsmIpSHl PtRs] ",
801 "[vl er S cks ln] ---------------- [bi->skb ] ",
802 "<-- Adv Rx Write-Back format\n");
804 for (i
= 0; i
< rx_ring
->count
; i
++) {
805 rx_buffer_info
= &rx_ring
->rx_buffer_info
[i
];
806 rx_desc
= IXGBE_RX_DESC(rx_ring
, i
);
807 u0
= (struct my_u0
*)rx_desc
;
808 staterr
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
809 if (staterr
& IXGBE_RXD_STAT_DD
) {
810 /* Descriptor Done */
811 pr_info("RWB[0x%03X] %016llX "
812 "%016llX ---------------- %p", i
,
815 rx_buffer_info
->skb
);
817 pr_info("R [0x%03X] %016llX "
818 "%016llX %016llX %p", i
,
821 (u64
)rx_buffer_info
->dma
,
822 rx_buffer_info
->skb
);
824 if (netif_msg_pktdata(adapter
) &&
825 rx_buffer_info
->dma
) {
826 print_hex_dump(KERN_INFO
, "",
827 DUMP_PREFIX_ADDRESS
, 16, 1,
828 page_address(rx_buffer_info
->page
) +
829 rx_buffer_info
->page_offset
,
830 ixgbe_rx_bufsz(rx_ring
), true);
834 if (i
== rx_ring
->next_to_use
)
836 else if (i
== rx_ring
->next_to_clean
)
845 static void ixgbe_release_hw_control(struct ixgbe_adapter
*adapter
)
849 /* Let firmware take over control of h/w */
850 ctrl_ext
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_CTRL_EXT
);
851 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_CTRL_EXT
,
852 ctrl_ext
& ~IXGBE_CTRL_EXT_DRV_LOAD
);
855 static void ixgbe_get_hw_control(struct ixgbe_adapter
*adapter
)
859 /* Let firmware know the driver has taken over */
860 ctrl_ext
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_CTRL_EXT
);
861 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_CTRL_EXT
,
862 ctrl_ext
| IXGBE_CTRL_EXT_DRV_LOAD
);
866 * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors
867 * @adapter: pointer to adapter struct
868 * @direction: 0 for Rx, 1 for Tx, -1 for other causes
869 * @queue: queue to map the corresponding interrupt to
870 * @msix_vector: the vector to map to the corresponding queue
873 static void ixgbe_set_ivar(struct ixgbe_adapter
*adapter
, s8 direction
,
874 u8 queue
, u8 msix_vector
)
877 struct ixgbe_hw
*hw
= &adapter
->hw
;
878 switch (hw
->mac
.type
) {
879 case ixgbe_mac_82598EB
:
880 msix_vector
|= IXGBE_IVAR_ALLOC_VAL
;
883 index
= (((direction
* 64) + queue
) >> 2) & 0x1F;
884 ivar
= IXGBE_READ_REG(hw
, IXGBE_IVAR(index
));
885 ivar
&= ~(0xFF << (8 * (queue
& 0x3)));
886 ivar
|= (msix_vector
<< (8 * (queue
& 0x3)));
887 IXGBE_WRITE_REG(hw
, IXGBE_IVAR(index
), ivar
);
889 case ixgbe_mac_82599EB
:
892 case ixgbe_mac_X550EM_x
:
893 case ixgbe_mac_x550em_a
:
894 if (direction
== -1) {
896 msix_vector
|= IXGBE_IVAR_ALLOC_VAL
;
897 index
= ((queue
& 1) * 8);
898 ivar
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_IVAR_MISC
);
899 ivar
&= ~(0xFF << index
);
900 ivar
|= (msix_vector
<< index
);
901 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_IVAR_MISC
, ivar
);
904 /* tx or rx causes */
905 msix_vector
|= IXGBE_IVAR_ALLOC_VAL
;
906 index
= ((16 * (queue
& 1)) + (8 * direction
));
907 ivar
= IXGBE_READ_REG(hw
, IXGBE_IVAR(queue
>> 1));
908 ivar
&= ~(0xFF << index
);
909 ivar
|= (msix_vector
<< index
);
910 IXGBE_WRITE_REG(hw
, IXGBE_IVAR(queue
>> 1), ivar
);
918 static inline void ixgbe_irq_rearm_queues(struct ixgbe_adapter
*adapter
,
923 switch (adapter
->hw
.mac
.type
) {
924 case ixgbe_mac_82598EB
:
925 mask
= (IXGBE_EIMS_RTX_QUEUE
& qmask
);
926 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EICS
, mask
);
928 case ixgbe_mac_82599EB
:
931 case ixgbe_mac_X550EM_x
:
932 case ixgbe_mac_x550em_a
:
933 mask
= (qmask
& 0xFFFFFFFF);
934 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EICS_EX(0), mask
);
935 mask
= (qmask
>> 32);
936 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EICS_EX(1), mask
);
943 void ixgbe_unmap_and_free_tx_resource(struct ixgbe_ring
*ring
,
944 struct ixgbe_tx_buffer
*tx_buffer
)
946 if (tx_buffer
->skb
) {
947 dev_kfree_skb_any(tx_buffer
->skb
);
948 if (dma_unmap_len(tx_buffer
, len
))
949 dma_unmap_single(ring
->dev
,
950 dma_unmap_addr(tx_buffer
, dma
),
951 dma_unmap_len(tx_buffer
, len
),
953 } else if (dma_unmap_len(tx_buffer
, len
)) {
954 dma_unmap_page(ring
->dev
,
955 dma_unmap_addr(tx_buffer
, dma
),
956 dma_unmap_len(tx_buffer
, len
),
959 tx_buffer
->next_to_watch
= NULL
;
960 tx_buffer
->skb
= NULL
;
961 dma_unmap_len_set(tx_buffer
, len
, 0);
962 /* tx_buffer must be completely set up in the transmit path */
965 static void ixgbe_update_xoff_rx_lfc(struct ixgbe_adapter
*adapter
)
967 struct ixgbe_hw
*hw
= &adapter
->hw
;
968 struct ixgbe_hw_stats
*hwstats
= &adapter
->stats
;
972 if ((hw
->fc
.current_mode
!= ixgbe_fc_full
) &&
973 (hw
->fc
.current_mode
!= ixgbe_fc_rx_pause
))
976 switch (hw
->mac
.type
) {
977 case ixgbe_mac_82598EB
:
978 data
= IXGBE_READ_REG(hw
, IXGBE_LXOFFRXC
);
981 data
= IXGBE_READ_REG(hw
, IXGBE_LXOFFRXCNT
);
983 hwstats
->lxoffrxc
+= data
;
985 /* refill credits (no tx hang) if we received xoff */
989 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
990 clear_bit(__IXGBE_HANG_CHECK_ARMED
,
991 &adapter
->tx_ring
[i
]->state
);
994 static void ixgbe_update_xoff_received(struct ixgbe_adapter
*adapter
)
996 struct ixgbe_hw
*hw
= &adapter
->hw
;
997 struct ixgbe_hw_stats
*hwstats
= &adapter
->stats
;
1001 bool pfc_en
= adapter
->dcb_cfg
.pfc_mode_enable
;
1003 if (adapter
->ixgbe_ieee_pfc
)
1004 pfc_en
|= !!(adapter
->ixgbe_ieee_pfc
->pfc_en
);
1006 if (!(adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) || !pfc_en
) {
1007 ixgbe_update_xoff_rx_lfc(adapter
);
1011 /* update stats for each tc, only valid with PFC enabled */
1012 for (i
= 0; i
< MAX_TX_PACKET_BUFFERS
; i
++) {
1015 switch (hw
->mac
.type
) {
1016 case ixgbe_mac_82598EB
:
1017 pxoffrxc
= IXGBE_READ_REG(hw
, IXGBE_PXOFFRXC(i
));
1020 pxoffrxc
= IXGBE_READ_REG(hw
, IXGBE_PXOFFRXCNT(i
));
1022 hwstats
->pxoffrxc
[i
] += pxoffrxc
;
1023 /* Get the TC for given UP */
1024 tc
= netdev_get_prio_tc_map(adapter
->netdev
, i
);
1025 xoff
[tc
] += pxoffrxc
;
1028 /* disarm tx queues that have received xoff frames */
1029 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
1030 struct ixgbe_ring
*tx_ring
= adapter
->tx_ring
[i
];
1032 tc
= tx_ring
->dcb_tc
;
1034 clear_bit(__IXGBE_HANG_CHECK_ARMED
, &tx_ring
->state
);
1038 static u64
ixgbe_get_tx_completed(struct ixgbe_ring
*ring
)
1040 return ring
->stats
.packets
;
1043 static u64
ixgbe_get_tx_pending(struct ixgbe_ring
*ring
)
1045 struct ixgbe_adapter
*adapter
;
1046 struct ixgbe_hw
*hw
;
1049 if (ring
->l2_accel_priv
)
1050 adapter
= ring
->l2_accel_priv
->real_adapter
;
1052 adapter
= netdev_priv(ring
->netdev
);
1055 head
= IXGBE_READ_REG(hw
, IXGBE_TDH(ring
->reg_idx
));
1056 tail
= IXGBE_READ_REG(hw
, IXGBE_TDT(ring
->reg_idx
));
1059 return (head
< tail
) ?
1060 tail
- head
: (tail
+ ring
->count
- head
);
1065 static inline bool ixgbe_check_tx_hang(struct ixgbe_ring
*tx_ring
)
1067 u32 tx_done
= ixgbe_get_tx_completed(tx_ring
);
1068 u32 tx_done_old
= tx_ring
->tx_stats
.tx_done_old
;
1069 u32 tx_pending
= ixgbe_get_tx_pending(tx_ring
);
1071 clear_check_for_tx_hang(tx_ring
);
1074 * Check for a hung queue, but be thorough. This verifies
1075 * that a transmit has been completed since the previous
1076 * check AND there is at least one packet pending. The
1077 * ARMED bit is set to indicate a potential hang. The
1078 * bit is cleared if a pause frame is received to remove
1079 * false hang detection due to PFC or 802.3x frames. By
1080 * requiring this to fail twice we avoid races with
1081 * pfc clearing the ARMED bit and conditions where we
1082 * run the check_tx_hang logic with a transmit completion
1083 * pending but without time to complete it yet.
1085 if (tx_done_old
== tx_done
&& tx_pending
)
1086 /* make sure it is true for two checks in a row */
1087 return test_and_set_bit(__IXGBE_HANG_CHECK_ARMED
,
1089 /* update completed stats and continue */
1090 tx_ring
->tx_stats
.tx_done_old
= tx_done
;
1091 /* reset the countdown */
1092 clear_bit(__IXGBE_HANG_CHECK_ARMED
, &tx_ring
->state
);
1098 * ixgbe_tx_timeout_reset - initiate reset due to Tx timeout
1099 * @adapter: driver private struct
1101 static void ixgbe_tx_timeout_reset(struct ixgbe_adapter
*adapter
)
1104 /* Do the reset outside of interrupt context */
1105 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
)) {
1106 adapter
->flags2
|= IXGBE_FLAG2_RESET_REQUESTED
;
1107 e_warn(drv
, "initiating reset due to tx timeout\n");
1108 ixgbe_service_event_schedule(adapter
);
1113 * ixgbe_tx_maxrate - callback to set the maximum per-queue bitrate
1115 static int ixgbe_tx_maxrate(struct net_device
*netdev
,
1116 int queue_index
, u32 maxrate
)
1118 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
1119 struct ixgbe_hw
*hw
= &adapter
->hw
;
1120 u32 bcnrc_val
= ixgbe_link_mbps(adapter
);
1125 /* Calculate the rate factor values to set */
1126 bcnrc_val
<<= IXGBE_RTTBCNRC_RF_INT_SHIFT
;
1127 bcnrc_val
/= maxrate
;
1129 /* clear everything but the rate factor */
1130 bcnrc_val
&= IXGBE_RTTBCNRC_RF_INT_MASK
|
1131 IXGBE_RTTBCNRC_RF_DEC_MASK
;
1133 /* enable the rate scheduler */
1134 bcnrc_val
|= IXGBE_RTTBCNRC_RS_ENA
;
1136 IXGBE_WRITE_REG(hw
, IXGBE_RTTDQSEL
, queue_index
);
1137 IXGBE_WRITE_REG(hw
, IXGBE_RTTBCNRC
, bcnrc_val
);
1143 * ixgbe_clean_tx_irq - Reclaim resources after transmit completes
1144 * @q_vector: structure containing interrupt and ring information
1145 * @tx_ring: tx ring to clean
1146 * @napi_budget: Used to determine if we are in netpoll
1148 static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector
*q_vector
,
1149 struct ixgbe_ring
*tx_ring
, int napi_budget
)
1151 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
1152 struct ixgbe_tx_buffer
*tx_buffer
;
1153 union ixgbe_adv_tx_desc
*tx_desc
;
1154 unsigned int total_bytes
= 0, total_packets
= 0;
1155 unsigned int budget
= q_vector
->tx
.work_limit
;
1156 unsigned int i
= tx_ring
->next_to_clean
;
1158 if (test_bit(__IXGBE_DOWN
, &adapter
->state
))
1161 tx_buffer
= &tx_ring
->tx_buffer_info
[i
];
1162 tx_desc
= IXGBE_TX_DESC(tx_ring
, i
);
1163 i
-= tx_ring
->count
;
1166 union ixgbe_adv_tx_desc
*eop_desc
= tx_buffer
->next_to_watch
;
1168 /* if next_to_watch is not set then there is no work pending */
1172 /* prevent any other reads prior to eop_desc */
1173 read_barrier_depends();
1175 /* if DD is not set pending work has not been completed */
1176 if (!(eop_desc
->wb
.status
& cpu_to_le32(IXGBE_TXD_STAT_DD
)))
1179 /* clear next_to_watch to prevent false hangs */
1180 tx_buffer
->next_to_watch
= NULL
;
1182 /* update the statistics for this packet */
1183 total_bytes
+= tx_buffer
->bytecount
;
1184 total_packets
+= tx_buffer
->gso_segs
;
1187 napi_consume_skb(tx_buffer
->skb
, napi_budget
);
1189 /* unmap skb header data */
1190 dma_unmap_single(tx_ring
->dev
,
1191 dma_unmap_addr(tx_buffer
, dma
),
1192 dma_unmap_len(tx_buffer
, len
),
1195 /* clear tx_buffer data */
1196 tx_buffer
->skb
= NULL
;
1197 dma_unmap_len_set(tx_buffer
, len
, 0);
1199 /* unmap remaining buffers */
1200 while (tx_desc
!= eop_desc
) {
1205 i
-= tx_ring
->count
;
1206 tx_buffer
= tx_ring
->tx_buffer_info
;
1207 tx_desc
= IXGBE_TX_DESC(tx_ring
, 0);
1210 /* unmap any remaining paged data */
1211 if (dma_unmap_len(tx_buffer
, len
)) {
1212 dma_unmap_page(tx_ring
->dev
,
1213 dma_unmap_addr(tx_buffer
, dma
),
1214 dma_unmap_len(tx_buffer
, len
),
1216 dma_unmap_len_set(tx_buffer
, len
, 0);
1220 /* move us one more past the eop_desc for start of next pkt */
1225 i
-= tx_ring
->count
;
1226 tx_buffer
= tx_ring
->tx_buffer_info
;
1227 tx_desc
= IXGBE_TX_DESC(tx_ring
, 0);
1230 /* issue prefetch for next Tx descriptor */
1233 /* update budget accounting */
1235 } while (likely(budget
));
1237 i
+= tx_ring
->count
;
1238 tx_ring
->next_to_clean
= i
;
1239 u64_stats_update_begin(&tx_ring
->syncp
);
1240 tx_ring
->stats
.bytes
+= total_bytes
;
1241 tx_ring
->stats
.packets
+= total_packets
;
1242 u64_stats_update_end(&tx_ring
->syncp
);
1243 q_vector
->tx
.total_bytes
+= total_bytes
;
1244 q_vector
->tx
.total_packets
+= total_packets
;
1246 if (check_for_tx_hang(tx_ring
) && ixgbe_check_tx_hang(tx_ring
)) {
1247 /* schedule immediate reset if we believe we hung */
1248 struct ixgbe_hw
*hw
= &adapter
->hw
;
1249 e_err(drv
, "Detected Tx Unit Hang\n"
1251 " TDH, TDT <%x>, <%x>\n"
1252 " next_to_use <%x>\n"
1253 " next_to_clean <%x>\n"
1254 "tx_buffer_info[next_to_clean]\n"
1255 " time_stamp <%lx>\n"
1257 tx_ring
->queue_index
,
1258 IXGBE_READ_REG(hw
, IXGBE_TDH(tx_ring
->reg_idx
)),
1259 IXGBE_READ_REG(hw
, IXGBE_TDT(tx_ring
->reg_idx
)),
1260 tx_ring
->next_to_use
, i
,
1261 tx_ring
->tx_buffer_info
[i
].time_stamp
, jiffies
);
1263 netif_stop_subqueue(tx_ring
->netdev
, tx_ring
->queue_index
);
1266 "tx hang %d detected on queue %d, resetting adapter\n",
1267 adapter
->tx_timeout_count
+ 1, tx_ring
->queue_index
);
1269 /* schedule immediate reset if we believe we hung */
1270 ixgbe_tx_timeout_reset(adapter
);
1272 /* the adapter is about to reset, no point in enabling stuff */
1276 netdev_tx_completed_queue(txring_txq(tx_ring
),
1277 total_packets
, total_bytes
);
1279 #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
1280 if (unlikely(total_packets
&& netif_carrier_ok(tx_ring
->netdev
) &&
1281 (ixgbe_desc_unused(tx_ring
) >= TX_WAKE_THRESHOLD
))) {
1282 /* Make sure that anybody stopping the queue after this
1283 * sees the new next_to_clean.
1286 if (__netif_subqueue_stopped(tx_ring
->netdev
,
1287 tx_ring
->queue_index
)
1288 && !test_bit(__IXGBE_DOWN
, &adapter
->state
)) {
1289 netif_wake_subqueue(tx_ring
->netdev
,
1290 tx_ring
->queue_index
);
1291 ++tx_ring
->tx_stats
.restart_queue
;
1298 #ifdef CONFIG_IXGBE_DCA
1299 static void ixgbe_update_tx_dca(struct ixgbe_adapter
*adapter
,
1300 struct ixgbe_ring
*tx_ring
,
1303 struct ixgbe_hw
*hw
= &adapter
->hw
;
1307 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
)
1308 txctrl
= dca3_get_tag(tx_ring
->dev
, cpu
);
1310 switch (hw
->mac
.type
) {
1311 case ixgbe_mac_82598EB
:
1312 reg_offset
= IXGBE_DCA_TXCTRL(tx_ring
->reg_idx
);
1314 case ixgbe_mac_82599EB
:
1315 case ixgbe_mac_X540
:
1316 reg_offset
= IXGBE_DCA_TXCTRL_82599(tx_ring
->reg_idx
);
1317 txctrl
<<= IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599
;
1320 /* for unknown hardware do not write register */
1325 * We can enable relaxed ordering for reads, but not writes when
1326 * DCA is enabled. This is due to a known issue in some chipsets
1327 * which will cause the DCA tag to be cleared.
1329 txctrl
|= IXGBE_DCA_TXCTRL_DESC_RRO_EN
|
1330 IXGBE_DCA_TXCTRL_DATA_RRO_EN
|
1331 IXGBE_DCA_TXCTRL_DESC_DCA_EN
;
1333 IXGBE_WRITE_REG(hw
, reg_offset
, txctrl
);
1336 static void ixgbe_update_rx_dca(struct ixgbe_adapter
*adapter
,
1337 struct ixgbe_ring
*rx_ring
,
1340 struct ixgbe_hw
*hw
= &adapter
->hw
;
1342 u8 reg_idx
= rx_ring
->reg_idx
;
1344 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
)
1345 rxctrl
= dca3_get_tag(rx_ring
->dev
, cpu
);
1347 switch (hw
->mac
.type
) {
1348 case ixgbe_mac_82599EB
:
1349 case ixgbe_mac_X540
:
1350 rxctrl
<<= IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599
;
1357 * We can enable relaxed ordering for reads, but not writes when
1358 * DCA is enabled. This is due to a known issue in some chipsets
1359 * which will cause the DCA tag to be cleared.
1361 rxctrl
|= IXGBE_DCA_RXCTRL_DESC_RRO_EN
|
1362 IXGBE_DCA_RXCTRL_DATA_DCA_EN
|
1363 IXGBE_DCA_RXCTRL_DESC_DCA_EN
;
1365 IXGBE_WRITE_REG(hw
, IXGBE_DCA_RXCTRL(reg_idx
), rxctrl
);
1368 static void ixgbe_update_dca(struct ixgbe_q_vector
*q_vector
)
1370 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
1371 struct ixgbe_ring
*ring
;
1372 int cpu
= get_cpu();
1374 if (q_vector
->cpu
== cpu
)
1377 ixgbe_for_each_ring(ring
, q_vector
->tx
)
1378 ixgbe_update_tx_dca(adapter
, ring
, cpu
);
1380 ixgbe_for_each_ring(ring
, q_vector
->rx
)
1381 ixgbe_update_rx_dca(adapter
, ring
, cpu
);
1383 q_vector
->cpu
= cpu
;
1388 static void ixgbe_setup_dca(struct ixgbe_adapter
*adapter
)
1392 /* always use CB2 mode, difference is masked in the CB driver */
1393 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
)
1394 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_DCA_CTRL
,
1395 IXGBE_DCA_CTRL_DCA_MODE_CB2
);
1397 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_DCA_CTRL
,
1398 IXGBE_DCA_CTRL_DCA_DISABLE
);
1400 for (i
= 0; i
< adapter
->num_q_vectors
; i
++) {
1401 adapter
->q_vector
[i
]->cpu
= -1;
1402 ixgbe_update_dca(adapter
->q_vector
[i
]);
1406 static int __ixgbe_notify_dca(struct device
*dev
, void *data
)
1408 struct ixgbe_adapter
*adapter
= dev_get_drvdata(dev
);
1409 unsigned long event
= *(unsigned long *)data
;
1411 if (!(adapter
->flags
& IXGBE_FLAG_DCA_CAPABLE
))
1415 case DCA_PROVIDER_ADD
:
1416 /* if we're already enabled, don't do it again */
1417 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
)
1419 if (dca_add_requester(dev
) == 0) {
1420 adapter
->flags
|= IXGBE_FLAG_DCA_ENABLED
;
1421 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_DCA_CTRL
,
1422 IXGBE_DCA_CTRL_DCA_MODE_CB2
);
1425 /* Fall Through since DCA is disabled. */
1426 case DCA_PROVIDER_REMOVE
:
1427 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
) {
1428 dca_remove_requester(dev
);
1429 adapter
->flags
&= ~IXGBE_FLAG_DCA_ENABLED
;
1430 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_DCA_CTRL
,
1431 IXGBE_DCA_CTRL_DCA_DISABLE
);
1439 #endif /* CONFIG_IXGBE_DCA */
1441 #define IXGBE_RSS_L4_TYPES_MASK \
1442 ((1ul << IXGBE_RXDADV_RSSTYPE_IPV4_TCP) | \
1443 (1ul << IXGBE_RXDADV_RSSTYPE_IPV4_UDP) | \
1444 (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_TCP) | \
1445 (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_UDP))
1447 static inline void ixgbe_rx_hash(struct ixgbe_ring
*ring
,
1448 union ixgbe_adv_rx_desc
*rx_desc
,
1449 struct sk_buff
*skb
)
1453 if (!(ring
->netdev
->features
& NETIF_F_RXHASH
))
1456 rss_type
= le16_to_cpu(rx_desc
->wb
.lower
.lo_dword
.hs_rss
.pkt_info
) &
1457 IXGBE_RXDADV_RSSTYPE_MASK
;
1462 skb_set_hash(skb
, le32_to_cpu(rx_desc
->wb
.lower
.hi_dword
.rss
),
1463 (IXGBE_RSS_L4_TYPES_MASK
& (1ul << rss_type
)) ?
1464 PKT_HASH_TYPE_L4
: PKT_HASH_TYPE_L3
);
1469 * ixgbe_rx_is_fcoe - check the rx desc for incoming pkt type
1470 * @ring: structure containing ring specific data
1471 * @rx_desc: advanced rx descriptor
1473 * Returns : true if it is FCoE pkt
1475 static inline bool ixgbe_rx_is_fcoe(struct ixgbe_ring
*ring
,
1476 union ixgbe_adv_rx_desc
*rx_desc
)
1478 __le16 pkt_info
= rx_desc
->wb
.lower
.lo_dword
.hs_rss
.pkt_info
;
1480 return test_bit(__IXGBE_RX_FCOE
, &ring
->state
) &&
1481 ((pkt_info
& cpu_to_le16(IXGBE_RXDADV_PKTTYPE_ETQF_MASK
)) ==
1482 (cpu_to_le16(IXGBE_ETQF_FILTER_FCOE
<<
1483 IXGBE_RXDADV_PKTTYPE_ETQF_SHIFT
)));
1486 #endif /* IXGBE_FCOE */
1488 * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum
1489 * @ring: structure containing ring specific data
1490 * @rx_desc: current Rx descriptor being processed
1491 * @skb: skb currently being received and modified
1493 static inline void ixgbe_rx_checksum(struct ixgbe_ring
*ring
,
1494 union ixgbe_adv_rx_desc
*rx_desc
,
1495 struct sk_buff
*skb
)
1497 __le16 pkt_info
= rx_desc
->wb
.lower
.lo_dword
.hs_rss
.pkt_info
;
1498 __le16 hdr_info
= rx_desc
->wb
.lower
.lo_dword
.hs_rss
.hdr_info
;
1499 bool encap_pkt
= false;
1501 skb_checksum_none_assert(skb
);
1503 /* Rx csum disabled */
1504 if (!(ring
->netdev
->features
& NETIF_F_RXCSUM
))
1507 if ((pkt_info
& cpu_to_le16(IXGBE_RXDADV_PKTTYPE_VXLAN
)) &&
1508 (hdr_info
& cpu_to_le16(IXGBE_RXDADV_PKTTYPE_TUNNEL
>> 16))) {
1510 skb
->encapsulation
= 1;
1513 /* if IP and error */
1514 if (ixgbe_test_staterr(rx_desc
, IXGBE_RXD_STAT_IPCS
) &&
1515 ixgbe_test_staterr(rx_desc
, IXGBE_RXDADV_ERR_IPE
)) {
1516 ring
->rx_stats
.csum_err
++;
1520 if (!ixgbe_test_staterr(rx_desc
, IXGBE_RXD_STAT_L4CS
))
1523 if (ixgbe_test_staterr(rx_desc
, IXGBE_RXDADV_ERR_TCPE
)) {
1525 * 82599 errata, UDP frames with a 0 checksum can be marked as
1528 if ((pkt_info
& cpu_to_le16(IXGBE_RXDADV_PKTTYPE_UDP
)) &&
1529 test_bit(__IXGBE_RX_CSUM_UDP_ZERO_ERR
, &ring
->state
))
1532 ring
->rx_stats
.csum_err
++;
1536 /* It must be a TCP or UDP packet with a valid checksum */
1537 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
1539 if (!ixgbe_test_staterr(rx_desc
, IXGBE_RXD_STAT_OUTERIPCS
))
1542 if (ixgbe_test_staterr(rx_desc
, IXGBE_RXDADV_ERR_OUTERIPER
)) {
1543 skb
->ip_summed
= CHECKSUM_NONE
;
1546 /* If we checked the outer header let the stack know */
1547 skb
->csum_level
= 1;
1551 static bool ixgbe_alloc_mapped_page(struct ixgbe_ring
*rx_ring
,
1552 struct ixgbe_rx_buffer
*bi
)
1554 struct page
*page
= bi
->page
;
1557 /* since we are recycling buffers we should seldom need to alloc */
1561 /* alloc new page for storage */
1562 page
= dev_alloc_pages(ixgbe_rx_pg_order(rx_ring
));
1563 if (unlikely(!page
)) {
1564 rx_ring
->rx_stats
.alloc_rx_page_failed
++;
1568 /* map page for use */
1569 dma
= dma_map_page(rx_ring
->dev
, page
, 0,
1570 ixgbe_rx_pg_size(rx_ring
), DMA_FROM_DEVICE
);
1573 * if mapping failed free memory back to system since
1574 * there isn't much point in holding memory we can't use
1576 if (dma_mapping_error(rx_ring
->dev
, dma
)) {
1577 __free_pages(page
, ixgbe_rx_pg_order(rx_ring
));
1579 rx_ring
->rx_stats
.alloc_rx_page_failed
++;
1585 bi
->page_offset
= 0;
1591 * ixgbe_alloc_rx_buffers - Replace used receive buffers
1592 * @rx_ring: ring to place buffers on
1593 * @cleaned_count: number of buffers to replace
1595 void ixgbe_alloc_rx_buffers(struct ixgbe_ring
*rx_ring
, u16 cleaned_count
)
1597 union ixgbe_adv_rx_desc
*rx_desc
;
1598 struct ixgbe_rx_buffer
*bi
;
1599 u16 i
= rx_ring
->next_to_use
;
1605 rx_desc
= IXGBE_RX_DESC(rx_ring
, i
);
1606 bi
= &rx_ring
->rx_buffer_info
[i
];
1607 i
-= rx_ring
->count
;
1610 if (!ixgbe_alloc_mapped_page(rx_ring
, bi
))
1614 * Refresh the desc even if buffer_addrs didn't change
1615 * because each write-back erases this info.
1617 rx_desc
->read
.pkt_addr
= cpu_to_le64(bi
->dma
+ bi
->page_offset
);
1623 rx_desc
= IXGBE_RX_DESC(rx_ring
, 0);
1624 bi
= rx_ring
->rx_buffer_info
;
1625 i
-= rx_ring
->count
;
1628 /* clear the status bits for the next_to_use descriptor */
1629 rx_desc
->wb
.upper
.status_error
= 0;
1632 } while (cleaned_count
);
1634 i
+= rx_ring
->count
;
1636 if (rx_ring
->next_to_use
!= i
) {
1637 rx_ring
->next_to_use
= i
;
1639 /* update next to alloc since we have filled the ring */
1640 rx_ring
->next_to_alloc
= i
;
1642 /* Force memory writes to complete before letting h/w
1643 * know there are new descriptors to fetch. (Only
1644 * applicable for weak-ordered memory model archs,
1648 writel(i
, rx_ring
->tail
);
1652 static void ixgbe_set_rsc_gso_size(struct ixgbe_ring
*ring
,
1653 struct sk_buff
*skb
)
1655 u16 hdr_len
= skb_headlen(skb
);
1657 /* set gso_size to avoid messing up TCP MSS */
1658 skb_shinfo(skb
)->gso_size
= DIV_ROUND_UP((skb
->len
- hdr_len
),
1659 IXGBE_CB(skb
)->append_cnt
);
1660 skb_shinfo(skb
)->gso_type
= SKB_GSO_TCPV4
;
1663 static void ixgbe_update_rsc_stats(struct ixgbe_ring
*rx_ring
,
1664 struct sk_buff
*skb
)
1666 /* if append_cnt is 0 then frame is not RSC */
1667 if (!IXGBE_CB(skb
)->append_cnt
)
1670 rx_ring
->rx_stats
.rsc_count
+= IXGBE_CB(skb
)->append_cnt
;
1671 rx_ring
->rx_stats
.rsc_flush
++;
1673 ixgbe_set_rsc_gso_size(rx_ring
, skb
);
1675 /* gso_size is computed using append_cnt so always clear it last */
1676 IXGBE_CB(skb
)->append_cnt
= 0;
1680 * ixgbe_process_skb_fields - Populate skb header fields from Rx descriptor
1681 * @rx_ring: rx descriptor ring packet is being transacted on
1682 * @rx_desc: pointer to the EOP Rx descriptor
1683 * @skb: pointer to current skb being populated
1685 * This function checks the ring, descriptor, and packet information in
1686 * order to populate the hash, checksum, VLAN, timestamp, protocol, and
1687 * other fields within the skb.
1689 static void ixgbe_process_skb_fields(struct ixgbe_ring
*rx_ring
,
1690 union ixgbe_adv_rx_desc
*rx_desc
,
1691 struct sk_buff
*skb
)
1693 struct net_device
*dev
= rx_ring
->netdev
;
1694 u32 flags
= rx_ring
->q_vector
->adapter
->flags
;
1696 ixgbe_update_rsc_stats(rx_ring
, skb
);
1698 ixgbe_rx_hash(rx_ring
, rx_desc
, skb
);
1700 ixgbe_rx_checksum(rx_ring
, rx_desc
, skb
);
1702 if (unlikely(flags
& IXGBE_FLAG_RX_HWTSTAMP_ENABLED
))
1703 ixgbe_ptp_rx_hwtstamp(rx_ring
, rx_desc
, skb
);
1705 if ((dev
->features
& NETIF_F_HW_VLAN_CTAG_RX
) &&
1706 ixgbe_test_staterr(rx_desc
, IXGBE_RXD_STAT_VP
)) {
1707 u16 vid
= le16_to_cpu(rx_desc
->wb
.upper
.vlan
);
1708 __vlan_hwaccel_put_tag(skb
, htons(ETH_P_8021Q
), vid
);
1711 skb_record_rx_queue(skb
, rx_ring
->queue_index
);
1713 skb
->protocol
= eth_type_trans(skb
, dev
);
1716 static void ixgbe_rx_skb(struct ixgbe_q_vector
*q_vector
,
1717 struct sk_buff
*skb
)
1719 skb_mark_napi_id(skb
, &q_vector
->napi
);
1720 if (ixgbe_qv_busy_polling(q_vector
))
1721 netif_receive_skb(skb
);
1723 napi_gro_receive(&q_vector
->napi
, skb
);
1727 * ixgbe_is_non_eop - process handling of non-EOP buffers
1728 * @rx_ring: Rx ring being processed
1729 * @rx_desc: Rx descriptor for current buffer
1730 * @skb: Current socket buffer containing buffer in progress
1732 * This function updates next to clean. If the buffer is an EOP buffer
1733 * this function exits returning false, otherwise it will place the
1734 * sk_buff in the next buffer to be chained and return true indicating
1735 * that this is in fact a non-EOP buffer.
1737 static bool ixgbe_is_non_eop(struct ixgbe_ring
*rx_ring
,
1738 union ixgbe_adv_rx_desc
*rx_desc
,
1739 struct sk_buff
*skb
)
1741 u32 ntc
= rx_ring
->next_to_clean
+ 1;
1743 /* fetch, update, and store next to clean */
1744 ntc
= (ntc
< rx_ring
->count
) ? ntc
: 0;
1745 rx_ring
->next_to_clean
= ntc
;
1747 prefetch(IXGBE_RX_DESC(rx_ring
, ntc
));
1749 /* update RSC append count if present */
1750 if (ring_is_rsc_enabled(rx_ring
)) {
1751 __le32 rsc_enabled
= rx_desc
->wb
.lower
.lo_dword
.data
&
1752 cpu_to_le32(IXGBE_RXDADV_RSCCNT_MASK
);
1754 if (unlikely(rsc_enabled
)) {
1755 u32 rsc_cnt
= le32_to_cpu(rsc_enabled
);
1757 rsc_cnt
>>= IXGBE_RXDADV_RSCCNT_SHIFT
;
1758 IXGBE_CB(skb
)->append_cnt
+= rsc_cnt
- 1;
1760 /* update ntc based on RSC value */
1761 ntc
= le32_to_cpu(rx_desc
->wb
.upper
.status_error
);
1762 ntc
&= IXGBE_RXDADV_NEXTP_MASK
;
1763 ntc
>>= IXGBE_RXDADV_NEXTP_SHIFT
;
1767 /* if we are the last buffer then there is nothing else to do */
1768 if (likely(ixgbe_test_staterr(rx_desc
, IXGBE_RXD_STAT_EOP
)))
1771 /* place skb in next buffer to be received */
1772 rx_ring
->rx_buffer_info
[ntc
].skb
= skb
;
1773 rx_ring
->rx_stats
.non_eop_descs
++;
1779 * ixgbe_pull_tail - ixgbe specific version of skb_pull_tail
1780 * @rx_ring: rx descriptor ring packet is being transacted on
1781 * @skb: pointer to current skb being adjusted
1783 * This function is an ixgbe specific version of __pskb_pull_tail. The
1784 * main difference between this version and the original function is that
1785 * this function can make several assumptions about the state of things
1786 * that allow for significant optimizations versus the standard function.
1787 * As a result we can do things like drop a frag and maintain an accurate
1788 * truesize for the skb.
1790 static void ixgbe_pull_tail(struct ixgbe_ring
*rx_ring
,
1791 struct sk_buff
*skb
)
1793 struct skb_frag_struct
*frag
= &skb_shinfo(skb
)->frags
[0];
1795 unsigned int pull_len
;
1798 * it is valid to use page_address instead of kmap since we are
1799 * working with pages allocated out of the lomem pool per
1800 * alloc_page(GFP_ATOMIC)
1802 va
= skb_frag_address(frag
);
1805 * we need the header to contain the greater of either ETH_HLEN or
1806 * 60 bytes if the skb->len is less than 60 for skb_pad.
1808 pull_len
= eth_get_headlen(va
, IXGBE_RX_HDR_SIZE
);
1810 /* align pull length to size of long to optimize memcpy performance */
1811 skb_copy_to_linear_data(skb
, va
, ALIGN(pull_len
, sizeof(long)));
1813 /* update all of the pointers */
1814 skb_frag_size_sub(frag
, pull_len
);
1815 frag
->page_offset
+= pull_len
;
1816 skb
->data_len
-= pull_len
;
1817 skb
->tail
+= pull_len
;
1821 * ixgbe_dma_sync_frag - perform DMA sync for first frag of SKB
1822 * @rx_ring: rx descriptor ring packet is being transacted on
1823 * @skb: pointer to current skb being updated
1825 * This function provides a basic DMA sync up for the first fragment of an
1826 * skb. The reason for doing this is that the first fragment cannot be
1827 * unmapped until we have reached the end of packet descriptor for a buffer
1830 static void ixgbe_dma_sync_frag(struct ixgbe_ring
*rx_ring
,
1831 struct sk_buff
*skb
)
1833 /* if the page was released unmap it, else just sync our portion */
1834 if (unlikely(IXGBE_CB(skb
)->page_released
)) {
1835 dma_unmap_page(rx_ring
->dev
, IXGBE_CB(skb
)->dma
,
1836 ixgbe_rx_pg_size(rx_ring
), DMA_FROM_DEVICE
);
1837 IXGBE_CB(skb
)->page_released
= false;
1839 struct skb_frag_struct
*frag
= &skb_shinfo(skb
)->frags
[0];
1841 dma_sync_single_range_for_cpu(rx_ring
->dev
,
1844 ixgbe_rx_bufsz(rx_ring
),
1847 IXGBE_CB(skb
)->dma
= 0;
1851 * ixgbe_cleanup_headers - Correct corrupted or empty headers
1852 * @rx_ring: rx descriptor ring packet is being transacted on
1853 * @rx_desc: pointer to the EOP Rx descriptor
1854 * @skb: pointer to current skb being fixed
1856 * Check for corrupted packet headers caused by senders on the local L2
1857 * embedded NIC switch not setting up their Tx Descriptors right. These
1858 * should be very rare.
1860 * Also address the case where we are pulling data in on pages only
1861 * and as such no data is present in the skb header.
1863 * In addition if skb is not at least 60 bytes we need to pad it so that
1864 * it is large enough to qualify as a valid Ethernet frame.
1866 * Returns true if an error was encountered and skb was freed.
1868 static bool ixgbe_cleanup_headers(struct ixgbe_ring
*rx_ring
,
1869 union ixgbe_adv_rx_desc
*rx_desc
,
1870 struct sk_buff
*skb
)
1872 struct net_device
*netdev
= rx_ring
->netdev
;
1874 /* verify that the packet does not have any known errors */
1875 if (unlikely(ixgbe_test_staterr(rx_desc
,
1876 IXGBE_RXDADV_ERR_FRAME_ERR_MASK
) &&
1877 !(netdev
->features
& NETIF_F_RXALL
))) {
1878 dev_kfree_skb_any(skb
);
1882 /* place header in linear portion of buffer */
1883 if (skb_is_nonlinear(skb
))
1884 ixgbe_pull_tail(rx_ring
, skb
);
1887 /* do not attempt to pad FCoE Frames as this will disrupt DDP */
1888 if (ixgbe_rx_is_fcoe(rx_ring
, rx_desc
))
1892 /* if eth_skb_pad returns an error the skb was freed */
1893 if (eth_skb_pad(skb
))
1900 * ixgbe_reuse_rx_page - page flip buffer and store it back on the ring
1901 * @rx_ring: rx descriptor ring to store buffers on
1902 * @old_buff: donor buffer to have page reused
1904 * Synchronizes page for reuse by the adapter
1906 static void ixgbe_reuse_rx_page(struct ixgbe_ring
*rx_ring
,
1907 struct ixgbe_rx_buffer
*old_buff
)
1909 struct ixgbe_rx_buffer
*new_buff
;
1910 u16 nta
= rx_ring
->next_to_alloc
;
1912 new_buff
= &rx_ring
->rx_buffer_info
[nta
];
1914 /* update, and store next to alloc */
1916 rx_ring
->next_to_alloc
= (nta
< rx_ring
->count
) ? nta
: 0;
1918 /* transfer page from old buffer to new buffer */
1919 *new_buff
= *old_buff
;
1921 /* sync the buffer for use by the device */
1922 dma_sync_single_range_for_device(rx_ring
->dev
, new_buff
->dma
,
1923 new_buff
->page_offset
,
1924 ixgbe_rx_bufsz(rx_ring
),
1928 static inline bool ixgbe_page_is_reserved(struct page
*page
)
1930 return (page_to_nid(page
) != numa_mem_id()) || page_is_pfmemalloc(page
);
1934 * ixgbe_add_rx_frag - Add contents of Rx buffer to sk_buff
1935 * @rx_ring: rx descriptor ring to transact packets on
1936 * @rx_buffer: buffer containing page to add
1937 * @rx_desc: descriptor containing length of buffer written by hardware
1938 * @skb: sk_buff to place the data into
1940 * This function will add the data contained in rx_buffer->page to the skb.
1941 * This is done either through a direct copy if the data in the buffer is
1942 * less than the skb header size, otherwise it will just attach the page as
1943 * a frag to the skb.
1945 * The function will then update the page offset if necessary and return
1946 * true if the buffer can be reused by the adapter.
1948 static bool ixgbe_add_rx_frag(struct ixgbe_ring
*rx_ring
,
1949 struct ixgbe_rx_buffer
*rx_buffer
,
1950 union ixgbe_adv_rx_desc
*rx_desc
,
1951 struct sk_buff
*skb
)
1953 struct page
*page
= rx_buffer
->page
;
1954 unsigned int size
= le16_to_cpu(rx_desc
->wb
.upper
.length
);
1955 #if (PAGE_SIZE < 8192)
1956 unsigned int truesize
= ixgbe_rx_bufsz(rx_ring
);
1958 unsigned int truesize
= ALIGN(size
, L1_CACHE_BYTES
);
1959 unsigned int last_offset
= ixgbe_rx_pg_size(rx_ring
) -
1960 ixgbe_rx_bufsz(rx_ring
);
1963 if ((size
<= IXGBE_RX_HDR_SIZE
) && !skb_is_nonlinear(skb
)) {
1964 unsigned char *va
= page_address(page
) + rx_buffer
->page_offset
;
1966 memcpy(__skb_put(skb
, size
), va
, ALIGN(size
, sizeof(long)));
1968 /* page is not reserved, we can reuse buffer as-is */
1969 if (likely(!ixgbe_page_is_reserved(page
)))
1972 /* this page cannot be reused so discard it */
1973 __free_pages(page
, ixgbe_rx_pg_order(rx_ring
));
1977 skb_add_rx_frag(skb
, skb_shinfo(skb
)->nr_frags
, page
,
1978 rx_buffer
->page_offset
, size
, truesize
);
1980 /* avoid re-using remote pages */
1981 if (unlikely(ixgbe_page_is_reserved(page
)))
1984 #if (PAGE_SIZE < 8192)
1985 /* if we are only owner of page we can reuse it */
1986 if (unlikely(page_count(page
) != 1))
1989 /* flip page offset to other buffer */
1990 rx_buffer
->page_offset
^= truesize
;
1992 /* move offset up to the next cache line */
1993 rx_buffer
->page_offset
+= truesize
;
1995 if (rx_buffer
->page_offset
> last_offset
)
1999 /* Even if we own the page, we are not allowed to use atomic_set()
2000 * This would break get_page_unless_zero() users.
2007 static struct sk_buff
*ixgbe_fetch_rx_buffer(struct ixgbe_ring
*rx_ring
,
2008 union ixgbe_adv_rx_desc
*rx_desc
)
2010 struct ixgbe_rx_buffer
*rx_buffer
;
2011 struct sk_buff
*skb
;
2014 rx_buffer
= &rx_ring
->rx_buffer_info
[rx_ring
->next_to_clean
];
2015 page
= rx_buffer
->page
;
2018 skb
= rx_buffer
->skb
;
2021 void *page_addr
= page_address(page
) +
2022 rx_buffer
->page_offset
;
2024 /* prefetch first cache line of first page */
2025 prefetch(page_addr
);
2026 #if L1_CACHE_BYTES < 128
2027 prefetch(page_addr
+ L1_CACHE_BYTES
);
2030 /* allocate a skb to store the frags */
2031 skb
= napi_alloc_skb(&rx_ring
->q_vector
->napi
,
2033 if (unlikely(!skb
)) {
2034 rx_ring
->rx_stats
.alloc_rx_buff_failed
++;
2039 * we will be copying header into skb->data in
2040 * pskb_may_pull so it is in our interest to prefetch
2041 * it now to avoid a possible cache miss
2043 prefetchw(skb
->data
);
2046 * Delay unmapping of the first packet. It carries the
2047 * header information, HW may still access the header
2048 * after the writeback. Only unmap it when EOP is
2051 if (likely(ixgbe_test_staterr(rx_desc
, IXGBE_RXD_STAT_EOP
)))
2054 IXGBE_CB(skb
)->dma
= rx_buffer
->dma
;
2056 if (ixgbe_test_staterr(rx_desc
, IXGBE_RXD_STAT_EOP
))
2057 ixgbe_dma_sync_frag(rx_ring
, skb
);
2060 /* we are reusing so sync this buffer for CPU use */
2061 dma_sync_single_range_for_cpu(rx_ring
->dev
,
2063 rx_buffer
->page_offset
,
2064 ixgbe_rx_bufsz(rx_ring
),
2067 rx_buffer
->skb
= NULL
;
2070 /* pull page into skb */
2071 if (ixgbe_add_rx_frag(rx_ring
, rx_buffer
, rx_desc
, skb
)) {
2072 /* hand second half of page back to the ring */
2073 ixgbe_reuse_rx_page(rx_ring
, rx_buffer
);
2074 } else if (IXGBE_CB(skb
)->dma
== rx_buffer
->dma
) {
2075 /* the page has been released from the ring */
2076 IXGBE_CB(skb
)->page_released
= true;
2078 /* we are not reusing the buffer so unmap it */
2079 dma_unmap_page(rx_ring
->dev
, rx_buffer
->dma
,
2080 ixgbe_rx_pg_size(rx_ring
),
2084 /* clear contents of buffer_info */
2085 rx_buffer
->page
= NULL
;
2091 * ixgbe_clean_rx_irq - Clean completed descriptors from Rx ring - bounce buf
2092 * @q_vector: structure containing interrupt and ring information
2093 * @rx_ring: rx descriptor ring to transact packets on
2094 * @budget: Total limit on number of packets to process
2096 * This function provides a "bounce buffer" approach to Rx interrupt
2097 * processing. The advantage to this is that on systems that have
2098 * expensive overhead for IOMMU access this provides a means of avoiding
2099 * it by maintaining the mapping of the page to the syste.
2101 * Returns amount of work completed
2103 static int ixgbe_clean_rx_irq(struct ixgbe_q_vector
*q_vector
,
2104 struct ixgbe_ring
*rx_ring
,
2107 unsigned int total_rx_bytes
= 0, total_rx_packets
= 0;
2109 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
2111 unsigned int mss
= 0;
2112 #endif /* IXGBE_FCOE */
2113 u16 cleaned_count
= ixgbe_desc_unused(rx_ring
);
2115 while (likely(total_rx_packets
< budget
)) {
2116 union ixgbe_adv_rx_desc
*rx_desc
;
2117 struct sk_buff
*skb
;
2119 /* return some buffers to hardware, one at a time is too slow */
2120 if (cleaned_count
>= IXGBE_RX_BUFFER_WRITE
) {
2121 ixgbe_alloc_rx_buffers(rx_ring
, cleaned_count
);
2125 rx_desc
= IXGBE_RX_DESC(rx_ring
, rx_ring
->next_to_clean
);
2127 if (!rx_desc
->wb
.upper
.status_error
)
2130 /* This memory barrier is needed to keep us from reading
2131 * any other fields out of the rx_desc until we know the
2132 * descriptor has been written back
2136 /* retrieve a buffer from the ring */
2137 skb
= ixgbe_fetch_rx_buffer(rx_ring
, rx_desc
);
2139 /* exit if we failed to retrieve a buffer */
2145 /* place incomplete frames back on ring for completion */
2146 if (ixgbe_is_non_eop(rx_ring
, rx_desc
, skb
))
2149 /* verify the packet layout is correct */
2150 if (ixgbe_cleanup_headers(rx_ring
, rx_desc
, skb
))
2153 /* probably a little skewed due to removing CRC */
2154 total_rx_bytes
+= skb
->len
;
2156 /* populate checksum, timestamp, VLAN, and protocol */
2157 ixgbe_process_skb_fields(rx_ring
, rx_desc
, skb
);
2160 /* if ddp, not passing to ULD unless for FCP_RSP or error */
2161 if (ixgbe_rx_is_fcoe(rx_ring
, rx_desc
)) {
2162 ddp_bytes
= ixgbe_fcoe_ddp(adapter
, rx_desc
, skb
);
2163 /* include DDPed FCoE data */
2164 if (ddp_bytes
> 0) {
2166 mss
= rx_ring
->netdev
->mtu
-
2167 sizeof(struct fcoe_hdr
) -
2168 sizeof(struct fc_frame_header
) -
2169 sizeof(struct fcoe_crc_eof
);
2173 total_rx_bytes
+= ddp_bytes
;
2174 total_rx_packets
+= DIV_ROUND_UP(ddp_bytes
,
2178 dev_kfree_skb_any(skb
);
2183 #endif /* IXGBE_FCOE */
2184 ixgbe_rx_skb(q_vector
, skb
);
2186 /* update budget accounting */
2190 u64_stats_update_begin(&rx_ring
->syncp
);
2191 rx_ring
->stats
.packets
+= total_rx_packets
;
2192 rx_ring
->stats
.bytes
+= total_rx_bytes
;
2193 u64_stats_update_end(&rx_ring
->syncp
);
2194 q_vector
->rx
.total_packets
+= total_rx_packets
;
2195 q_vector
->rx
.total_bytes
+= total_rx_bytes
;
2197 return total_rx_packets
;
2200 #ifdef CONFIG_NET_RX_BUSY_POLL
2201 /* must be called with local_bh_disable()d */
2202 static int ixgbe_low_latency_recv(struct napi_struct
*napi
)
2204 struct ixgbe_q_vector
*q_vector
=
2205 container_of(napi
, struct ixgbe_q_vector
, napi
);
2206 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
2207 struct ixgbe_ring
*ring
;
2210 if (test_bit(__IXGBE_DOWN
, &adapter
->state
))
2211 return LL_FLUSH_FAILED
;
2213 if (!ixgbe_qv_lock_poll(q_vector
))
2214 return LL_FLUSH_BUSY
;
2216 ixgbe_for_each_ring(ring
, q_vector
->rx
) {
2217 found
= ixgbe_clean_rx_irq(q_vector
, ring
, 4);
2218 #ifdef BP_EXTENDED_STATS
2220 ring
->stats
.cleaned
+= found
;
2222 ring
->stats
.misses
++;
2228 ixgbe_qv_unlock_poll(q_vector
);
2232 #endif /* CONFIG_NET_RX_BUSY_POLL */
2235 * ixgbe_configure_msix - Configure MSI-X hardware
2236 * @adapter: board private structure
2238 * ixgbe_configure_msix sets up the hardware to properly generate MSI-X
2241 static void ixgbe_configure_msix(struct ixgbe_adapter
*adapter
)
2243 struct ixgbe_q_vector
*q_vector
;
2247 /* Populate MSIX to EITR Select */
2248 if (adapter
->num_vfs
> 32) {
2249 u32 eitrsel
= BIT(adapter
->num_vfs
- 32) - 1;
2250 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EITRSEL
, eitrsel
);
2254 * Populate the IVAR table and set the ITR values to the
2255 * corresponding register.
2257 for (v_idx
= 0; v_idx
< adapter
->num_q_vectors
; v_idx
++) {
2258 struct ixgbe_ring
*ring
;
2259 q_vector
= adapter
->q_vector
[v_idx
];
2261 ixgbe_for_each_ring(ring
, q_vector
->rx
)
2262 ixgbe_set_ivar(adapter
, 0, ring
->reg_idx
, v_idx
);
2264 ixgbe_for_each_ring(ring
, q_vector
->tx
)
2265 ixgbe_set_ivar(adapter
, 1, ring
->reg_idx
, v_idx
);
2267 ixgbe_write_eitr(q_vector
);
2270 switch (adapter
->hw
.mac
.type
) {
2271 case ixgbe_mac_82598EB
:
2272 ixgbe_set_ivar(adapter
, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX
,
2275 case ixgbe_mac_82599EB
:
2276 case ixgbe_mac_X540
:
2277 case ixgbe_mac_X550
:
2278 case ixgbe_mac_X550EM_x
:
2279 case ixgbe_mac_x550em_a
:
2280 ixgbe_set_ivar(adapter
, -1, 1, v_idx
);
2285 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EITR(v_idx
), 1950);
2287 /* set up to autoclear timer, and the vectors */
2288 mask
= IXGBE_EIMS_ENABLE_MASK
;
2289 mask
&= ~(IXGBE_EIMS_OTHER
|
2290 IXGBE_EIMS_MAILBOX
|
2293 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIAC
, mask
);
2296 enum latency_range
{
2300 latency_invalid
= 255
2304 * ixgbe_update_itr - update the dynamic ITR value based on statistics
2305 * @q_vector: structure containing interrupt and ring information
2306 * @ring_container: structure containing ring performance data
2308 * Stores a new ITR value based on packets and byte
2309 * counts during the last interrupt. The advantage of per interrupt
2310 * computation is faster updates and more accurate ITR for the current
2311 * traffic pattern. Constants in this function were computed
2312 * based on theoretical maximum wire speed and thresholds were set based
2313 * on testing data as well as attempting to minimize response time
2314 * while increasing bulk throughput.
2315 * this functionality is controlled by the InterruptThrottleRate module
2316 * parameter (see ixgbe_param.c)
2318 static void ixgbe_update_itr(struct ixgbe_q_vector
*q_vector
,
2319 struct ixgbe_ring_container
*ring_container
)
2321 int bytes
= ring_container
->total_bytes
;
2322 int packets
= ring_container
->total_packets
;
2325 u8 itr_setting
= ring_container
->itr
;
2330 /* simple throttlerate management
2331 * 0-10MB/s lowest (100000 ints/s)
2332 * 10-20MB/s low (20000 ints/s)
2333 * 20-1249MB/s bulk (12000 ints/s)
2335 /* what was last interrupt timeslice? */
2336 timepassed_us
= q_vector
->itr
>> 2;
2337 if (timepassed_us
== 0)
2340 bytes_perint
= bytes
/ timepassed_us
; /* bytes/usec */
2342 switch (itr_setting
) {
2343 case lowest_latency
:
2344 if (bytes_perint
> 10)
2345 itr_setting
= low_latency
;
2348 if (bytes_perint
> 20)
2349 itr_setting
= bulk_latency
;
2350 else if (bytes_perint
<= 10)
2351 itr_setting
= lowest_latency
;
2354 if (bytes_perint
<= 20)
2355 itr_setting
= low_latency
;
2359 /* clear work counters since we have the values we need */
2360 ring_container
->total_bytes
= 0;
2361 ring_container
->total_packets
= 0;
2363 /* write updated itr to ring container */
2364 ring_container
->itr
= itr_setting
;
2368 * ixgbe_write_eitr - write EITR register in hardware specific way
2369 * @q_vector: structure containing interrupt and ring information
2371 * This function is made to be called by ethtool and by the driver
2372 * when it needs to update EITR registers at runtime. Hardware
2373 * specific quirks/differences are taken care of here.
2375 void ixgbe_write_eitr(struct ixgbe_q_vector
*q_vector
)
2377 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
2378 struct ixgbe_hw
*hw
= &adapter
->hw
;
2379 int v_idx
= q_vector
->v_idx
;
2380 u32 itr_reg
= q_vector
->itr
& IXGBE_MAX_EITR
;
2382 switch (adapter
->hw
.mac
.type
) {
2383 case ixgbe_mac_82598EB
:
2384 /* must write high and low 16 bits to reset counter */
2385 itr_reg
|= (itr_reg
<< 16);
2387 case ixgbe_mac_82599EB
:
2388 case ixgbe_mac_X540
:
2389 case ixgbe_mac_X550
:
2390 case ixgbe_mac_X550EM_x
:
2391 case ixgbe_mac_x550em_a
:
2393 * set the WDIS bit to not clear the timer bits and cause an
2394 * immediate assertion of the interrupt
2396 itr_reg
|= IXGBE_EITR_CNT_WDIS
;
2401 IXGBE_WRITE_REG(hw
, IXGBE_EITR(v_idx
), itr_reg
);
2404 static void ixgbe_set_itr(struct ixgbe_q_vector
*q_vector
)
2406 u32 new_itr
= q_vector
->itr
;
2409 ixgbe_update_itr(q_vector
, &q_vector
->tx
);
2410 ixgbe_update_itr(q_vector
, &q_vector
->rx
);
2412 current_itr
= max(q_vector
->rx
.itr
, q_vector
->tx
.itr
);
2414 switch (current_itr
) {
2415 /* counts and packets in update_itr are dependent on these numbers */
2416 case lowest_latency
:
2417 new_itr
= IXGBE_100K_ITR
;
2420 new_itr
= IXGBE_20K_ITR
;
2423 new_itr
= IXGBE_12K_ITR
;
2429 if (new_itr
!= q_vector
->itr
) {
2430 /* do an exponential smoothing */
2431 new_itr
= (10 * new_itr
* q_vector
->itr
) /
2432 ((9 * new_itr
) + q_vector
->itr
);
2434 /* save the algorithm value here */
2435 q_vector
->itr
= new_itr
;
2437 ixgbe_write_eitr(q_vector
);
2442 * ixgbe_check_overtemp_subtask - check for over temperature
2443 * @adapter: pointer to adapter
2445 static void ixgbe_check_overtemp_subtask(struct ixgbe_adapter
*adapter
)
2447 struct ixgbe_hw
*hw
= &adapter
->hw
;
2448 u32 eicr
= adapter
->interrupt_event
;
2450 if (test_bit(__IXGBE_DOWN
, &adapter
->state
))
2453 if (!(adapter
->flags2
& IXGBE_FLAG2_TEMP_SENSOR_CAPABLE
) &&
2454 !(adapter
->flags2
& IXGBE_FLAG2_TEMP_SENSOR_EVENT
))
2457 adapter
->flags2
&= ~IXGBE_FLAG2_TEMP_SENSOR_EVENT
;
2459 switch (hw
->device_id
) {
2460 case IXGBE_DEV_ID_82599_T3_LOM
:
2462 * Since the warning interrupt is for both ports
2463 * we don't have to check if:
2464 * - This interrupt wasn't for our port.
2465 * - We may have missed the interrupt so always have to
2466 * check if we got a LSC
2468 if (!(eicr
& IXGBE_EICR_GPI_SDP0_8259X
) &&
2469 !(eicr
& IXGBE_EICR_LSC
))
2472 if (!(eicr
& IXGBE_EICR_LSC
) && hw
->mac
.ops
.check_link
) {
2474 bool link_up
= false;
2476 hw
->mac
.ops
.check_link(hw
, &speed
, &link_up
, false);
2482 /* Check if this is not due to overtemp */
2483 if (hw
->phy
.ops
.check_overtemp(hw
) != IXGBE_ERR_OVERTEMP
)
2488 if (adapter
->hw
.mac
.type
>= ixgbe_mac_X540
)
2490 if (!(eicr
& IXGBE_EICR_GPI_SDP0(hw
)))
2494 e_crit(drv
, "%s\n", ixgbe_overheat_msg
);
2496 adapter
->interrupt_event
= 0;
2499 static void ixgbe_check_fan_failure(struct ixgbe_adapter
*adapter
, u32 eicr
)
2501 struct ixgbe_hw
*hw
= &adapter
->hw
;
2503 if ((adapter
->flags
& IXGBE_FLAG_FAN_FAIL_CAPABLE
) &&
2504 (eicr
& IXGBE_EICR_GPI_SDP1(hw
))) {
2505 e_crit(probe
, "Fan has stopped, replace the adapter\n");
2506 /* write to clear the interrupt */
2507 IXGBE_WRITE_REG(hw
, IXGBE_EICR
, IXGBE_EICR_GPI_SDP1(hw
));
2511 static void ixgbe_check_overtemp_event(struct ixgbe_adapter
*adapter
, u32 eicr
)
2513 struct ixgbe_hw
*hw
= &adapter
->hw
;
2515 if (!(adapter
->flags2
& IXGBE_FLAG2_TEMP_SENSOR_CAPABLE
))
2518 switch (adapter
->hw
.mac
.type
) {
2519 case ixgbe_mac_82599EB
:
2521 * Need to check link state so complete overtemp check
2524 if (((eicr
& IXGBE_EICR_GPI_SDP0(hw
)) ||
2525 (eicr
& IXGBE_EICR_LSC
)) &&
2526 (!test_bit(__IXGBE_DOWN
, &adapter
->state
))) {
2527 adapter
->interrupt_event
= eicr
;
2528 adapter
->flags2
|= IXGBE_FLAG2_TEMP_SENSOR_EVENT
;
2529 ixgbe_service_event_schedule(adapter
);
2533 case ixgbe_mac_X540
:
2534 if (!(eicr
& IXGBE_EICR_TS
))
2541 e_crit(drv
, "%s\n", ixgbe_overheat_msg
);
2544 static inline bool ixgbe_is_sfp(struct ixgbe_hw
*hw
)
2546 switch (hw
->mac
.type
) {
2547 case ixgbe_mac_82598EB
:
2548 if (hw
->phy
.type
== ixgbe_phy_nl
)
2551 case ixgbe_mac_82599EB
:
2552 case ixgbe_mac_X550EM_x
:
2553 case ixgbe_mac_x550em_a
:
2554 switch (hw
->mac
.ops
.get_media_type(hw
)) {
2555 case ixgbe_media_type_fiber
:
2556 case ixgbe_media_type_fiber_qsfp
:
2566 static void ixgbe_check_sfp_event(struct ixgbe_adapter
*adapter
, u32 eicr
)
2568 struct ixgbe_hw
*hw
= &adapter
->hw
;
2569 u32 eicr_mask
= IXGBE_EICR_GPI_SDP2(hw
);
2571 if (!ixgbe_is_sfp(hw
))
2574 /* Later MAC's use different SDP */
2575 if (hw
->mac
.type
>= ixgbe_mac_X540
)
2576 eicr_mask
= IXGBE_EICR_GPI_SDP0_X540
;
2578 if (eicr
& eicr_mask
) {
2579 /* Clear the interrupt */
2580 IXGBE_WRITE_REG(hw
, IXGBE_EICR
, eicr_mask
);
2581 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
)) {
2582 adapter
->flags2
|= IXGBE_FLAG2_SFP_NEEDS_RESET
;
2583 adapter
->sfp_poll_time
= 0;
2584 ixgbe_service_event_schedule(adapter
);
2588 if (adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
&&
2589 (eicr
& IXGBE_EICR_GPI_SDP1(hw
))) {
2590 /* Clear the interrupt */
2591 IXGBE_WRITE_REG(hw
, IXGBE_EICR
, IXGBE_EICR_GPI_SDP1(hw
));
2592 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
)) {
2593 adapter
->flags
|= IXGBE_FLAG_NEED_LINK_CONFIG
;
2594 ixgbe_service_event_schedule(adapter
);
2599 static void ixgbe_check_lsc(struct ixgbe_adapter
*adapter
)
2601 struct ixgbe_hw
*hw
= &adapter
->hw
;
2604 adapter
->flags
|= IXGBE_FLAG_NEED_LINK_UPDATE
;
2605 adapter
->link_check_timeout
= jiffies
;
2606 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
)) {
2607 IXGBE_WRITE_REG(hw
, IXGBE_EIMC
, IXGBE_EIMC_LSC
);
2608 IXGBE_WRITE_FLUSH(hw
);
2609 ixgbe_service_event_schedule(adapter
);
2613 static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter
*adapter
,
2617 struct ixgbe_hw
*hw
= &adapter
->hw
;
2619 switch (hw
->mac
.type
) {
2620 case ixgbe_mac_82598EB
:
2621 mask
= (IXGBE_EIMS_RTX_QUEUE
& qmask
);
2622 IXGBE_WRITE_REG(hw
, IXGBE_EIMS
, mask
);
2624 case ixgbe_mac_82599EB
:
2625 case ixgbe_mac_X540
:
2626 case ixgbe_mac_X550
:
2627 case ixgbe_mac_X550EM_x
:
2628 case ixgbe_mac_x550em_a
:
2629 mask
= (qmask
& 0xFFFFFFFF);
2631 IXGBE_WRITE_REG(hw
, IXGBE_EIMS_EX(0), mask
);
2632 mask
= (qmask
>> 32);
2634 IXGBE_WRITE_REG(hw
, IXGBE_EIMS_EX(1), mask
);
2639 /* skip the flush */
2642 static inline void ixgbe_irq_disable_queues(struct ixgbe_adapter
*adapter
,
2646 struct ixgbe_hw
*hw
= &adapter
->hw
;
2648 switch (hw
->mac
.type
) {
2649 case ixgbe_mac_82598EB
:
2650 mask
= (IXGBE_EIMS_RTX_QUEUE
& qmask
);
2651 IXGBE_WRITE_REG(hw
, IXGBE_EIMC
, mask
);
2653 case ixgbe_mac_82599EB
:
2654 case ixgbe_mac_X540
:
2655 case ixgbe_mac_X550
:
2656 case ixgbe_mac_X550EM_x
:
2657 case ixgbe_mac_x550em_a
:
2658 mask
= (qmask
& 0xFFFFFFFF);
2660 IXGBE_WRITE_REG(hw
, IXGBE_EIMC_EX(0), mask
);
2661 mask
= (qmask
>> 32);
2663 IXGBE_WRITE_REG(hw
, IXGBE_EIMC_EX(1), mask
);
2668 /* skip the flush */
2672 * ixgbe_irq_enable - Enable default interrupt generation settings
2673 * @adapter: board private structure
2675 static inline void ixgbe_irq_enable(struct ixgbe_adapter
*adapter
, bool queues
,
2678 struct ixgbe_hw
*hw
= &adapter
->hw
;
2679 u32 mask
= (IXGBE_EIMS_ENABLE_MASK
& ~IXGBE_EIMS_RTX_QUEUE
);
2681 /* don't reenable LSC while waiting for link */
2682 if (adapter
->flags
& IXGBE_FLAG_NEED_LINK_UPDATE
)
2683 mask
&= ~IXGBE_EIMS_LSC
;
2685 if (adapter
->flags2
& IXGBE_FLAG2_TEMP_SENSOR_CAPABLE
)
2686 switch (adapter
->hw
.mac
.type
) {
2687 case ixgbe_mac_82599EB
:
2688 mask
|= IXGBE_EIMS_GPI_SDP0(hw
);
2690 case ixgbe_mac_X540
:
2691 case ixgbe_mac_X550
:
2692 case ixgbe_mac_X550EM_x
:
2693 case ixgbe_mac_x550em_a
:
2694 mask
|= IXGBE_EIMS_TS
;
2699 if (adapter
->flags
& IXGBE_FLAG_FAN_FAIL_CAPABLE
)
2700 mask
|= IXGBE_EIMS_GPI_SDP1(hw
);
2701 switch (adapter
->hw
.mac
.type
) {
2702 case ixgbe_mac_82599EB
:
2703 mask
|= IXGBE_EIMS_GPI_SDP1(hw
);
2704 mask
|= IXGBE_EIMS_GPI_SDP2(hw
);
2706 case ixgbe_mac_X540
:
2707 case ixgbe_mac_X550
:
2708 case ixgbe_mac_X550EM_x
:
2709 case ixgbe_mac_x550em_a
:
2710 if (adapter
->hw
.device_id
== IXGBE_DEV_ID_X550EM_X_SFP
||
2711 adapter
->hw
.device_id
== IXGBE_DEV_ID_X550EM_A_SFP
||
2712 adapter
->hw
.device_id
== IXGBE_DEV_ID_X550EM_A_SFP_N
)
2713 mask
|= IXGBE_EIMS_GPI_SDP0(&adapter
->hw
);
2714 if (adapter
->hw
.phy
.type
== ixgbe_phy_x550em_ext_t
)
2715 mask
|= IXGBE_EICR_GPI_SDP0_X540
;
2716 mask
|= IXGBE_EIMS_ECC
;
2717 mask
|= IXGBE_EIMS_MAILBOX
;
2723 if ((adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
) &&
2724 !(adapter
->flags2
& IXGBE_FLAG2_FDIR_REQUIRES_REINIT
))
2725 mask
|= IXGBE_EIMS_FLOW_DIR
;
2727 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMS
, mask
);
2729 ixgbe_irq_enable_queues(adapter
, ~0);
2731 IXGBE_WRITE_FLUSH(&adapter
->hw
);
2734 static irqreturn_t
ixgbe_msix_other(int irq
, void *data
)
2736 struct ixgbe_adapter
*adapter
= data
;
2737 struct ixgbe_hw
*hw
= &adapter
->hw
;
2741 * Workaround for Silicon errata. Use clear-by-write instead
2742 * of clear-by-read. Reading with EICS will return the
2743 * interrupt causes without clearing, which later be done
2744 * with the write to EICR.
2746 eicr
= IXGBE_READ_REG(hw
, IXGBE_EICS
);
2748 /* The lower 16bits of the EICR register are for the queue interrupts
2749 * which should be masked here in order to not accidentally clear them if
2750 * the bits are high when ixgbe_msix_other is called. There is a race
2751 * condition otherwise which results in possible performance loss
2752 * especially if the ixgbe_msix_other interrupt is triggering
2753 * consistently (as it would when PPS is turned on for the X540 device)
2757 IXGBE_WRITE_REG(hw
, IXGBE_EICR
, eicr
);
2759 if (eicr
& IXGBE_EICR_LSC
)
2760 ixgbe_check_lsc(adapter
);
2762 if (eicr
& IXGBE_EICR_MAILBOX
)
2763 ixgbe_msg_task(adapter
);
2765 switch (hw
->mac
.type
) {
2766 case ixgbe_mac_82599EB
:
2767 case ixgbe_mac_X540
:
2768 case ixgbe_mac_X550
:
2769 case ixgbe_mac_X550EM_x
:
2770 case ixgbe_mac_x550em_a
:
2771 if (hw
->phy
.type
== ixgbe_phy_x550em_ext_t
&&
2772 (eicr
& IXGBE_EICR_GPI_SDP0_X540
)) {
2773 adapter
->flags2
|= IXGBE_FLAG2_PHY_INTERRUPT
;
2774 ixgbe_service_event_schedule(adapter
);
2775 IXGBE_WRITE_REG(hw
, IXGBE_EICR
,
2776 IXGBE_EICR_GPI_SDP0_X540
);
2778 if (eicr
& IXGBE_EICR_ECC
) {
2779 e_info(link
, "Received ECC Err, initiating reset\n");
2780 adapter
->flags2
|= IXGBE_FLAG2_RESET_REQUESTED
;
2781 ixgbe_service_event_schedule(adapter
);
2782 IXGBE_WRITE_REG(hw
, IXGBE_EICR
, IXGBE_EICR_ECC
);
2784 /* Handle Flow Director Full threshold interrupt */
2785 if (eicr
& IXGBE_EICR_FLOW_DIR
) {
2786 int reinit_count
= 0;
2788 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
2789 struct ixgbe_ring
*ring
= adapter
->tx_ring
[i
];
2790 if (test_and_clear_bit(__IXGBE_TX_FDIR_INIT_DONE
,
2795 /* no more flow director interrupts until after init */
2796 IXGBE_WRITE_REG(hw
, IXGBE_EIMC
, IXGBE_EIMC_FLOW_DIR
);
2797 adapter
->flags2
|= IXGBE_FLAG2_FDIR_REQUIRES_REINIT
;
2798 ixgbe_service_event_schedule(adapter
);
2801 ixgbe_check_sfp_event(adapter
, eicr
);
2802 ixgbe_check_overtemp_event(adapter
, eicr
);
2808 ixgbe_check_fan_failure(adapter
, eicr
);
2810 if (unlikely(eicr
& IXGBE_EICR_TIMESYNC
))
2811 ixgbe_ptp_check_pps_event(adapter
);
2813 /* re-enable the original interrupt state, no lsc, no queues */
2814 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
2815 ixgbe_irq_enable(adapter
, false, false);
2820 static irqreturn_t
ixgbe_msix_clean_rings(int irq
, void *data
)
2822 struct ixgbe_q_vector
*q_vector
= data
;
2824 /* EIAM disabled interrupts (on this vector) for us */
2826 if (q_vector
->rx
.ring
|| q_vector
->tx
.ring
)
2827 napi_schedule_irqoff(&q_vector
->napi
);
2833 * ixgbe_poll - NAPI Rx polling callback
2834 * @napi: structure for representing this polling device
2835 * @budget: how many packets driver is allowed to clean
2837 * This function is used for legacy and MSI, NAPI mode
2839 int ixgbe_poll(struct napi_struct
*napi
, int budget
)
2841 struct ixgbe_q_vector
*q_vector
=
2842 container_of(napi
, struct ixgbe_q_vector
, napi
);
2843 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
2844 struct ixgbe_ring
*ring
;
2845 int per_ring_budget
, work_done
= 0;
2846 bool clean_complete
= true;
2848 #ifdef CONFIG_IXGBE_DCA
2849 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
)
2850 ixgbe_update_dca(q_vector
);
2853 ixgbe_for_each_ring(ring
, q_vector
->tx
) {
2854 if (!ixgbe_clean_tx_irq(q_vector
, ring
, budget
))
2855 clean_complete
= false;
2858 /* Exit if we are called by netpoll or busy polling is active */
2859 if ((budget
<= 0) || !ixgbe_qv_lock_napi(q_vector
))
2862 /* attempt to distribute budget to each queue fairly, but don't allow
2863 * the budget to go below 1 because we'll exit polling */
2864 if (q_vector
->rx
.count
> 1)
2865 per_ring_budget
= max(budget
/q_vector
->rx
.count
, 1);
2867 per_ring_budget
= budget
;
2869 ixgbe_for_each_ring(ring
, q_vector
->rx
) {
2870 int cleaned
= ixgbe_clean_rx_irq(q_vector
, ring
,
2873 work_done
+= cleaned
;
2874 if (cleaned
>= per_ring_budget
)
2875 clean_complete
= false;
2878 ixgbe_qv_unlock_napi(q_vector
);
2879 /* If all work not completed, return budget and keep polling */
2880 if (!clean_complete
)
2883 /* all work done, exit the polling mode */
2884 napi_complete_done(napi
, work_done
);
2885 if (adapter
->rx_itr_setting
& 1)
2886 ixgbe_set_itr(q_vector
);
2887 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
2888 ixgbe_irq_enable_queues(adapter
, BIT_ULL(q_vector
->v_idx
));
2890 return min(work_done
, budget
- 1);
2894 * ixgbe_request_msix_irqs - Initialize MSI-X interrupts
2895 * @adapter: board private structure
2897 * ixgbe_request_msix_irqs allocates MSI-X vectors and requests
2898 * interrupts from the kernel.
2900 static int ixgbe_request_msix_irqs(struct ixgbe_adapter
*adapter
)
2902 struct net_device
*netdev
= adapter
->netdev
;
2906 for (vector
= 0; vector
< adapter
->num_q_vectors
; vector
++) {
2907 struct ixgbe_q_vector
*q_vector
= adapter
->q_vector
[vector
];
2908 struct msix_entry
*entry
= &adapter
->msix_entries
[vector
];
2910 if (q_vector
->tx
.ring
&& q_vector
->rx
.ring
) {
2911 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
2912 "%s-%s-%d", netdev
->name
, "TxRx", ri
++);
2914 } else if (q_vector
->rx
.ring
) {
2915 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
2916 "%s-%s-%d", netdev
->name
, "rx", ri
++);
2917 } else if (q_vector
->tx
.ring
) {
2918 snprintf(q_vector
->name
, sizeof(q_vector
->name
) - 1,
2919 "%s-%s-%d", netdev
->name
, "tx", ti
++);
2921 /* skip this unused q_vector */
2924 err
= request_irq(entry
->vector
, &ixgbe_msix_clean_rings
, 0,
2925 q_vector
->name
, q_vector
);
2927 e_err(probe
, "request_irq failed for MSIX interrupt "
2928 "Error: %d\n", err
);
2929 goto free_queue_irqs
;
2931 /* If Flow Director is enabled, set interrupt affinity */
2932 if (adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
) {
2933 /* assign the mask for this irq */
2934 irq_set_affinity_hint(entry
->vector
,
2935 &q_vector
->affinity_mask
);
2939 err
= request_irq(adapter
->msix_entries
[vector
].vector
,
2940 ixgbe_msix_other
, 0, netdev
->name
, adapter
);
2942 e_err(probe
, "request_irq for msix_other failed: %d\n", err
);
2943 goto free_queue_irqs
;
2951 irq_set_affinity_hint(adapter
->msix_entries
[vector
].vector
,
2953 free_irq(adapter
->msix_entries
[vector
].vector
,
2954 adapter
->q_vector
[vector
]);
2956 adapter
->flags
&= ~IXGBE_FLAG_MSIX_ENABLED
;
2957 pci_disable_msix(adapter
->pdev
);
2958 kfree(adapter
->msix_entries
);
2959 adapter
->msix_entries
= NULL
;
2964 * ixgbe_intr - legacy mode Interrupt Handler
2965 * @irq: interrupt number
2966 * @data: pointer to a network interface device structure
2968 static irqreturn_t
ixgbe_intr(int irq
, void *data
)
2970 struct ixgbe_adapter
*adapter
= data
;
2971 struct ixgbe_hw
*hw
= &adapter
->hw
;
2972 struct ixgbe_q_vector
*q_vector
= adapter
->q_vector
[0];
2976 * Workaround for silicon errata #26 on 82598. Mask the interrupt
2977 * before the read of EICR.
2979 IXGBE_WRITE_REG(hw
, IXGBE_EIMC
, IXGBE_IRQ_CLEAR_MASK
);
2981 /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read
2982 * therefore no explicit interrupt disable is necessary */
2983 eicr
= IXGBE_READ_REG(hw
, IXGBE_EICR
);
2986 * shared interrupt alert!
2987 * make sure interrupts are enabled because the read will
2988 * have disabled interrupts due to EIAM
2989 * finish the workaround of silicon errata on 82598. Unmask
2990 * the interrupt that we masked before the EICR read.
2992 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
2993 ixgbe_irq_enable(adapter
, true, true);
2994 return IRQ_NONE
; /* Not our interrupt */
2997 if (eicr
& IXGBE_EICR_LSC
)
2998 ixgbe_check_lsc(adapter
);
3000 switch (hw
->mac
.type
) {
3001 case ixgbe_mac_82599EB
:
3002 ixgbe_check_sfp_event(adapter
, eicr
);
3004 case ixgbe_mac_X540
:
3005 case ixgbe_mac_X550
:
3006 case ixgbe_mac_X550EM_x
:
3007 case ixgbe_mac_x550em_a
:
3008 if (eicr
& IXGBE_EICR_ECC
) {
3009 e_info(link
, "Received ECC Err, initiating reset\n");
3010 adapter
->flags2
|= IXGBE_FLAG2_RESET_REQUESTED
;
3011 ixgbe_service_event_schedule(adapter
);
3012 IXGBE_WRITE_REG(hw
, IXGBE_EICR
, IXGBE_EICR_ECC
);
3014 ixgbe_check_overtemp_event(adapter
, eicr
);
3020 ixgbe_check_fan_failure(adapter
, eicr
);
3021 if (unlikely(eicr
& IXGBE_EICR_TIMESYNC
))
3022 ixgbe_ptp_check_pps_event(adapter
);
3024 /* would disable interrupts here but EIAM disabled it */
3025 napi_schedule_irqoff(&q_vector
->napi
);
3028 * re-enable link(maybe) and non-queue interrupts, no flush.
3029 * ixgbe_poll will re-enable the queue interrupts
3031 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
))
3032 ixgbe_irq_enable(adapter
, false, false);
3038 * ixgbe_request_irq - initialize interrupts
3039 * @adapter: board private structure
3041 * Attempts to configure interrupts using the best available
3042 * capabilities of the hardware and kernel.
3044 static int ixgbe_request_irq(struct ixgbe_adapter
*adapter
)
3046 struct net_device
*netdev
= adapter
->netdev
;
3049 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
)
3050 err
= ixgbe_request_msix_irqs(adapter
);
3051 else if (adapter
->flags
& IXGBE_FLAG_MSI_ENABLED
)
3052 err
= request_irq(adapter
->pdev
->irq
, ixgbe_intr
, 0,
3053 netdev
->name
, adapter
);
3055 err
= request_irq(adapter
->pdev
->irq
, ixgbe_intr
, IRQF_SHARED
,
3056 netdev
->name
, adapter
);
3059 e_err(probe
, "request_irq failed, Error %d\n", err
);
3064 static void ixgbe_free_irq(struct ixgbe_adapter
*adapter
)
3068 if (!(adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
)) {
3069 free_irq(adapter
->pdev
->irq
, adapter
);
3073 for (vector
= 0; vector
< adapter
->num_q_vectors
; vector
++) {
3074 struct ixgbe_q_vector
*q_vector
= adapter
->q_vector
[vector
];
3075 struct msix_entry
*entry
= &adapter
->msix_entries
[vector
];
3077 /* free only the irqs that were actually requested */
3078 if (!q_vector
->rx
.ring
&& !q_vector
->tx
.ring
)
3081 /* clear the affinity_mask in the IRQ descriptor */
3082 irq_set_affinity_hint(entry
->vector
, NULL
);
3084 free_irq(entry
->vector
, q_vector
);
3087 free_irq(adapter
->msix_entries
[vector
].vector
, adapter
);
3091 * ixgbe_irq_disable - Mask off interrupt generation on the NIC
3092 * @adapter: board private structure
3094 static inline void ixgbe_irq_disable(struct ixgbe_adapter
*adapter
)
3096 switch (adapter
->hw
.mac
.type
) {
3097 case ixgbe_mac_82598EB
:
3098 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMC
, ~0);
3100 case ixgbe_mac_82599EB
:
3101 case ixgbe_mac_X540
:
3102 case ixgbe_mac_X550
:
3103 case ixgbe_mac_X550EM_x
:
3104 case ixgbe_mac_x550em_a
:
3105 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMC
, 0xFFFF0000);
3106 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMC_EX(0), ~0);
3107 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EIMC_EX(1), ~0);
3112 IXGBE_WRITE_FLUSH(&adapter
->hw
);
3113 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
) {
3116 for (vector
= 0; vector
< adapter
->num_q_vectors
; vector
++)
3117 synchronize_irq(adapter
->msix_entries
[vector
].vector
);
3119 synchronize_irq(adapter
->msix_entries
[vector
++].vector
);
3121 synchronize_irq(adapter
->pdev
->irq
);
3126 * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts
3129 static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter
*adapter
)
3131 struct ixgbe_q_vector
*q_vector
= adapter
->q_vector
[0];
3133 ixgbe_write_eitr(q_vector
);
3135 ixgbe_set_ivar(adapter
, 0, 0, 0);
3136 ixgbe_set_ivar(adapter
, 1, 0, 0);
3138 e_info(hw
, "Legacy interrupt IVAR setup done\n");
3142 * ixgbe_configure_tx_ring - Configure 8259x Tx ring after Reset
3143 * @adapter: board private structure
3144 * @ring: structure containing ring specific data
3146 * Configure the Tx descriptor ring after a reset.
3148 void ixgbe_configure_tx_ring(struct ixgbe_adapter
*adapter
,
3149 struct ixgbe_ring
*ring
)
3151 struct ixgbe_hw
*hw
= &adapter
->hw
;
3152 u64 tdba
= ring
->dma
;
3154 u32 txdctl
= IXGBE_TXDCTL_ENABLE
;
3155 u8 reg_idx
= ring
->reg_idx
;
3157 /* disable queue to avoid issues while updating state */
3158 IXGBE_WRITE_REG(hw
, IXGBE_TXDCTL(reg_idx
), 0);
3159 IXGBE_WRITE_FLUSH(hw
);
3161 IXGBE_WRITE_REG(hw
, IXGBE_TDBAL(reg_idx
),
3162 (tdba
& DMA_BIT_MASK(32)));
3163 IXGBE_WRITE_REG(hw
, IXGBE_TDBAH(reg_idx
), (tdba
>> 32));
3164 IXGBE_WRITE_REG(hw
, IXGBE_TDLEN(reg_idx
),
3165 ring
->count
* sizeof(union ixgbe_adv_tx_desc
));
3166 IXGBE_WRITE_REG(hw
, IXGBE_TDH(reg_idx
), 0);
3167 IXGBE_WRITE_REG(hw
, IXGBE_TDT(reg_idx
), 0);
3168 ring
->tail
= adapter
->io_addr
+ IXGBE_TDT(reg_idx
);
3171 * set WTHRESH to encourage burst writeback, it should not be set
3172 * higher than 1 when:
3173 * - ITR is 0 as it could cause false TX hangs
3174 * - ITR is set to > 100k int/sec and BQL is enabled
3176 * In order to avoid issues WTHRESH + PTHRESH should always be equal
3177 * to or less than the number of on chip descriptors, which is
3180 if (!ring
->q_vector
|| (ring
->q_vector
->itr
< IXGBE_100K_ITR
))
3181 txdctl
|= 1u << 16; /* WTHRESH = 1 */
3183 txdctl
|= 8u << 16; /* WTHRESH = 8 */
3186 * Setting PTHRESH to 32 both improves performance
3187 * and avoids a TX hang with DFP enabled
3189 txdctl
|= (1u << 8) | /* HTHRESH = 1 */
3190 32; /* PTHRESH = 32 */
3192 /* reinitialize flowdirector state */
3193 if (adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
) {
3194 ring
->atr_sample_rate
= adapter
->atr_sample_rate
;
3195 ring
->atr_count
= 0;
3196 set_bit(__IXGBE_TX_FDIR_INIT_DONE
, &ring
->state
);
3198 ring
->atr_sample_rate
= 0;
3201 /* initialize XPS */
3202 if (!test_and_set_bit(__IXGBE_TX_XPS_INIT_DONE
, &ring
->state
)) {
3203 struct ixgbe_q_vector
*q_vector
= ring
->q_vector
;
3206 netif_set_xps_queue(ring
->netdev
,
3207 &q_vector
->affinity_mask
,
3211 clear_bit(__IXGBE_HANG_CHECK_ARMED
, &ring
->state
);
3214 IXGBE_WRITE_REG(hw
, IXGBE_TXDCTL(reg_idx
), txdctl
);
3216 /* TXDCTL.EN will return 0 on 82598 if link is down, so skip it */
3217 if (hw
->mac
.type
== ixgbe_mac_82598EB
&&
3218 !(IXGBE_READ_REG(hw
, IXGBE_LINKS
) & IXGBE_LINKS_UP
))
3221 /* poll to verify queue is enabled */
3223 usleep_range(1000, 2000);
3224 txdctl
= IXGBE_READ_REG(hw
, IXGBE_TXDCTL(reg_idx
));
3225 } while (--wait_loop
&& !(txdctl
& IXGBE_TXDCTL_ENABLE
));
3227 e_err(drv
, "Could not enable Tx Queue %d\n", reg_idx
);
3230 static void ixgbe_setup_mtqc(struct ixgbe_adapter
*adapter
)
3232 struct ixgbe_hw
*hw
= &adapter
->hw
;
3234 u8 tcs
= netdev_get_num_tc(adapter
->netdev
);
3236 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
3239 /* disable the arbiter while setting MTQC */
3240 rttdcs
= IXGBE_READ_REG(hw
, IXGBE_RTTDCS
);
3241 rttdcs
|= IXGBE_RTTDCS_ARBDIS
;
3242 IXGBE_WRITE_REG(hw
, IXGBE_RTTDCS
, rttdcs
);
3244 /* set transmit pool layout */
3245 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
) {
3246 mtqc
= IXGBE_MTQC_VT_ENA
;
3248 mtqc
|= IXGBE_MTQC_RT_ENA
| IXGBE_MTQC_8TC_8TQ
;
3250 mtqc
|= IXGBE_MTQC_RT_ENA
| IXGBE_MTQC_4TC_4TQ
;
3251 else if (adapter
->ring_feature
[RING_F_RSS
].indices
== 4)
3252 mtqc
|= IXGBE_MTQC_32VF
;
3254 mtqc
|= IXGBE_MTQC_64VF
;
3257 mtqc
= IXGBE_MTQC_RT_ENA
| IXGBE_MTQC_8TC_8TQ
;
3259 mtqc
= IXGBE_MTQC_RT_ENA
| IXGBE_MTQC_4TC_4TQ
;
3261 mtqc
= IXGBE_MTQC_64Q_1PB
;
3264 IXGBE_WRITE_REG(hw
, IXGBE_MTQC
, mtqc
);
3266 /* Enable Security TX Buffer IFG for multiple pb */
3268 u32 sectx
= IXGBE_READ_REG(hw
, IXGBE_SECTXMINIFG
);
3269 sectx
|= IXGBE_SECTX_DCB
;
3270 IXGBE_WRITE_REG(hw
, IXGBE_SECTXMINIFG
, sectx
);
3273 /* re-enable the arbiter */
3274 rttdcs
&= ~IXGBE_RTTDCS_ARBDIS
;
3275 IXGBE_WRITE_REG(hw
, IXGBE_RTTDCS
, rttdcs
);
3279 * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset
3280 * @adapter: board private structure
3282 * Configure the Tx unit of the MAC after a reset.
3284 static void ixgbe_configure_tx(struct ixgbe_adapter
*adapter
)
3286 struct ixgbe_hw
*hw
= &adapter
->hw
;
3290 ixgbe_setup_mtqc(adapter
);
3292 if (hw
->mac
.type
!= ixgbe_mac_82598EB
) {
3293 /* DMATXCTL.EN must be before Tx queues are enabled */
3294 dmatxctl
= IXGBE_READ_REG(hw
, IXGBE_DMATXCTL
);
3295 dmatxctl
|= IXGBE_DMATXCTL_TE
;
3296 IXGBE_WRITE_REG(hw
, IXGBE_DMATXCTL
, dmatxctl
);
3299 /* Setup the HW Tx Head and Tail descriptor pointers */
3300 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
3301 ixgbe_configure_tx_ring(adapter
, adapter
->tx_ring
[i
]);
3304 static void ixgbe_enable_rx_drop(struct ixgbe_adapter
*adapter
,
3305 struct ixgbe_ring
*ring
)
3307 struct ixgbe_hw
*hw
= &adapter
->hw
;
3308 u8 reg_idx
= ring
->reg_idx
;
3309 u32 srrctl
= IXGBE_READ_REG(hw
, IXGBE_SRRCTL(reg_idx
));
3311 srrctl
|= IXGBE_SRRCTL_DROP_EN
;
3313 IXGBE_WRITE_REG(hw
, IXGBE_SRRCTL(reg_idx
), srrctl
);
3316 static void ixgbe_disable_rx_drop(struct ixgbe_adapter
*adapter
,
3317 struct ixgbe_ring
*ring
)
3319 struct ixgbe_hw
*hw
= &adapter
->hw
;
3320 u8 reg_idx
= ring
->reg_idx
;
3321 u32 srrctl
= IXGBE_READ_REG(hw
, IXGBE_SRRCTL(reg_idx
));
3323 srrctl
&= ~IXGBE_SRRCTL_DROP_EN
;
3325 IXGBE_WRITE_REG(hw
, IXGBE_SRRCTL(reg_idx
), srrctl
);
3328 #ifdef CONFIG_IXGBE_DCB
3329 void ixgbe_set_rx_drop_en(struct ixgbe_adapter
*adapter
)
3331 static void ixgbe_set_rx_drop_en(struct ixgbe_adapter
*adapter
)
3335 bool pfc_en
= adapter
->dcb_cfg
.pfc_mode_enable
;
3337 if (adapter
->ixgbe_ieee_pfc
)
3338 pfc_en
|= !!(adapter
->ixgbe_ieee_pfc
->pfc_en
);
3341 * We should set the drop enable bit if:
3344 * Number of Rx queues > 1 and flow control is disabled
3346 * This allows us to avoid head of line blocking for security
3347 * and performance reasons.
3349 if (adapter
->num_vfs
|| (adapter
->num_rx_queues
> 1 &&
3350 !(adapter
->hw
.fc
.current_mode
& ixgbe_fc_tx_pause
) && !pfc_en
)) {
3351 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
3352 ixgbe_enable_rx_drop(adapter
, adapter
->rx_ring
[i
]);
3354 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
3355 ixgbe_disable_rx_drop(adapter
, adapter
->rx_ring
[i
]);
3359 #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2
3361 static void ixgbe_configure_srrctl(struct ixgbe_adapter
*adapter
,
3362 struct ixgbe_ring
*rx_ring
)
3364 struct ixgbe_hw
*hw
= &adapter
->hw
;
3366 u8 reg_idx
= rx_ring
->reg_idx
;
3368 if (hw
->mac
.type
== ixgbe_mac_82598EB
) {
3369 u16 mask
= adapter
->ring_feature
[RING_F_RSS
].mask
;
3372 * if VMDq is not active we must program one srrctl register
3373 * per RSS queue since we have enabled RDRXCTL.MVMEN
3378 /* configure header buffer length, needed for RSC */
3379 srrctl
= IXGBE_RX_HDR_SIZE
<< IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT
;
3381 /* configure the packet buffer length */
3382 srrctl
|= ixgbe_rx_bufsz(rx_ring
) >> IXGBE_SRRCTL_BSIZEPKT_SHIFT
;
3384 /* configure descriptor type */
3385 srrctl
|= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF
;
3387 IXGBE_WRITE_REG(hw
, IXGBE_SRRCTL(reg_idx
), srrctl
);
3391 * ixgbe_rss_indir_tbl_entries - Return RSS indirection table entries
3392 * @adapter: device handle
3394 * - 82598/82599/X540: 128
3395 * - X550(non-SRIOV mode): 512
3396 * - X550(SRIOV mode): 64
3398 u32
ixgbe_rss_indir_tbl_entries(struct ixgbe_adapter
*adapter
)
3400 if (adapter
->hw
.mac
.type
< ixgbe_mac_X550
)
3402 else if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
)
3409 * ixgbe_store_reta - Write the RETA table to HW
3410 * @adapter: device handle
3412 * Write the RSS redirection table stored in adapter.rss_indir_tbl[] to HW.
3414 void ixgbe_store_reta(struct ixgbe_adapter
*adapter
)
3416 u32 i
, reta_entries
= ixgbe_rss_indir_tbl_entries(adapter
);
3417 struct ixgbe_hw
*hw
= &adapter
->hw
;
3420 u8
*indir_tbl
= adapter
->rss_indir_tbl
;
3422 /* Fill out the redirection table as follows:
3423 * - 82598: 8 bit wide entries containing pair of 4 bit RSS
3425 * - 82599/X540: 8 bit wide entries containing 4 bit RSS index
3426 * - X550: 8 bit wide entries containing 6 bit RSS index
3428 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
)
3429 indices_multi
= 0x11;
3431 indices_multi
= 0x1;
3433 /* Write redirection table to HW */
3434 for (i
= 0; i
< reta_entries
; i
++) {
3435 reta
|= indices_multi
* indir_tbl
[i
] << (i
& 0x3) * 8;
3438 IXGBE_WRITE_REG(hw
, IXGBE_RETA(i
>> 2), reta
);
3440 IXGBE_WRITE_REG(hw
, IXGBE_ERETA((i
>> 2) - 32),
3448 * ixgbe_store_vfreta - Write the RETA table to HW (x550 devices in SRIOV mode)
3449 * @adapter: device handle
3451 * Write the RSS redirection table stored in adapter.rss_indir_tbl[] to HW.
3453 static void ixgbe_store_vfreta(struct ixgbe_adapter
*adapter
)
3455 u32 i
, reta_entries
= ixgbe_rss_indir_tbl_entries(adapter
);
3456 struct ixgbe_hw
*hw
= &adapter
->hw
;
3458 unsigned int pf_pool
= adapter
->num_vfs
;
3460 /* Write redirection table to HW */
3461 for (i
= 0; i
< reta_entries
; i
++) {
3462 vfreta
|= (u32
)adapter
->rss_indir_tbl
[i
] << (i
& 0x3) * 8;
3464 IXGBE_WRITE_REG(hw
, IXGBE_PFVFRETA(i
>> 2, pf_pool
),
3471 static void ixgbe_setup_reta(struct ixgbe_adapter
*adapter
)
3473 struct ixgbe_hw
*hw
= &adapter
->hw
;
3475 u32 reta_entries
= ixgbe_rss_indir_tbl_entries(adapter
);
3476 u16 rss_i
= adapter
->ring_feature
[RING_F_RSS
].indices
;
3478 /* Program table for at least 2 queues w/ SR-IOV so that VFs can
3479 * make full use of any rings they may have. We will use the
3480 * PSRTYPE register to control how many rings we use within the PF.
3482 if ((adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
) && (rss_i
< 2))
3485 /* Fill out hash function seeds */
3486 for (i
= 0; i
< 10; i
++)
3487 IXGBE_WRITE_REG(hw
, IXGBE_RSSRK(i
), adapter
->rss_key
[i
]);
3489 /* Fill out redirection table */
3490 memset(adapter
->rss_indir_tbl
, 0, sizeof(adapter
->rss_indir_tbl
));
3492 for (i
= 0, j
= 0; i
< reta_entries
; i
++, j
++) {
3496 adapter
->rss_indir_tbl
[i
] = j
;
3499 ixgbe_store_reta(adapter
);
3502 static void ixgbe_setup_vfreta(struct ixgbe_adapter
*adapter
)
3504 struct ixgbe_hw
*hw
= &adapter
->hw
;
3505 u16 rss_i
= adapter
->ring_feature
[RING_F_RSS
].indices
;
3506 unsigned int pf_pool
= adapter
->num_vfs
;
3509 /* Fill out hash function seeds */
3510 for (i
= 0; i
< 10; i
++)
3511 IXGBE_WRITE_REG(hw
, IXGBE_PFVFRSSRK(i
, pf_pool
),
3512 adapter
->rss_key
[i
]);
3514 /* Fill out the redirection table */
3515 for (i
= 0, j
= 0; i
< 64; i
++, j
++) {
3519 adapter
->rss_indir_tbl
[i
] = j
;
3522 ixgbe_store_vfreta(adapter
);
3525 static void ixgbe_setup_mrqc(struct ixgbe_adapter
*adapter
)
3527 struct ixgbe_hw
*hw
= &adapter
->hw
;
3528 u32 mrqc
= 0, rss_field
= 0, vfmrqc
= 0;
3531 /* Disable indicating checksum in descriptor, enables RSS hash */
3532 rxcsum
= IXGBE_READ_REG(hw
, IXGBE_RXCSUM
);
3533 rxcsum
|= IXGBE_RXCSUM_PCSD
;
3534 IXGBE_WRITE_REG(hw
, IXGBE_RXCSUM
, rxcsum
);
3536 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
3537 if (adapter
->ring_feature
[RING_F_RSS
].mask
)
3538 mrqc
= IXGBE_MRQC_RSSEN
;
3540 u8 tcs
= netdev_get_num_tc(adapter
->netdev
);
3542 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
) {
3544 mrqc
= IXGBE_MRQC_VMDQRT8TCEN
; /* 8 TCs */
3546 mrqc
= IXGBE_MRQC_VMDQRT4TCEN
; /* 4 TCs */
3547 else if (adapter
->ring_feature
[RING_F_RSS
].indices
== 4)
3548 mrqc
= IXGBE_MRQC_VMDQRSS32EN
;
3550 mrqc
= IXGBE_MRQC_VMDQRSS64EN
;
3553 mrqc
= IXGBE_MRQC_RTRSS8TCEN
;
3555 mrqc
= IXGBE_MRQC_RTRSS4TCEN
;
3557 mrqc
= IXGBE_MRQC_RSSEN
;
3561 /* Perform hash on these packet types */
3562 rss_field
|= IXGBE_MRQC_RSS_FIELD_IPV4
|
3563 IXGBE_MRQC_RSS_FIELD_IPV4_TCP
|
3564 IXGBE_MRQC_RSS_FIELD_IPV6
|
3565 IXGBE_MRQC_RSS_FIELD_IPV6_TCP
;
3567 if (adapter
->flags2
& IXGBE_FLAG2_RSS_FIELD_IPV4_UDP
)
3568 rss_field
|= IXGBE_MRQC_RSS_FIELD_IPV4_UDP
;
3569 if (adapter
->flags2
& IXGBE_FLAG2_RSS_FIELD_IPV6_UDP
)
3570 rss_field
|= IXGBE_MRQC_RSS_FIELD_IPV6_UDP
;
3572 netdev_rss_key_fill(adapter
->rss_key
, sizeof(adapter
->rss_key
));
3573 if ((hw
->mac
.type
>= ixgbe_mac_X550
) &&
3574 (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
)) {
3575 unsigned int pf_pool
= adapter
->num_vfs
;
3577 /* Enable VF RSS mode */
3578 mrqc
|= IXGBE_MRQC_MULTIPLE_RSS
;
3579 IXGBE_WRITE_REG(hw
, IXGBE_MRQC
, mrqc
);
3581 /* Setup RSS through the VF registers */
3582 ixgbe_setup_vfreta(adapter
);
3583 vfmrqc
= IXGBE_MRQC_RSSEN
;
3584 vfmrqc
|= rss_field
;
3585 IXGBE_WRITE_REG(hw
, IXGBE_PFVFMRQC(pf_pool
), vfmrqc
);
3587 ixgbe_setup_reta(adapter
);
3589 IXGBE_WRITE_REG(hw
, IXGBE_MRQC
, mrqc
);
3594 * ixgbe_configure_rscctl - enable RSC for the indicated ring
3595 * @adapter: address of board private structure
3596 * @index: index of ring to set
3598 static void ixgbe_configure_rscctl(struct ixgbe_adapter
*adapter
,
3599 struct ixgbe_ring
*ring
)
3601 struct ixgbe_hw
*hw
= &adapter
->hw
;
3603 u8 reg_idx
= ring
->reg_idx
;
3605 if (!ring_is_rsc_enabled(ring
))
3608 rscctrl
= IXGBE_READ_REG(hw
, IXGBE_RSCCTL(reg_idx
));
3609 rscctrl
|= IXGBE_RSCCTL_RSCEN
;
3611 * we must limit the number of descriptors so that the
3612 * total size of max desc * buf_len is not greater
3615 rscctrl
|= IXGBE_RSCCTL_MAXDESC_16
;
3616 IXGBE_WRITE_REG(hw
, IXGBE_RSCCTL(reg_idx
), rscctrl
);
3619 #define IXGBE_MAX_RX_DESC_POLL 10
3620 static void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter
*adapter
,
3621 struct ixgbe_ring
*ring
)
3623 struct ixgbe_hw
*hw
= &adapter
->hw
;
3624 int wait_loop
= IXGBE_MAX_RX_DESC_POLL
;
3626 u8 reg_idx
= ring
->reg_idx
;
3628 if (ixgbe_removed(hw
->hw_addr
))
3630 /* RXDCTL.EN will return 0 on 82598 if link is down, so skip it */
3631 if (hw
->mac
.type
== ixgbe_mac_82598EB
&&
3632 !(IXGBE_READ_REG(hw
, IXGBE_LINKS
) & IXGBE_LINKS_UP
))
3636 usleep_range(1000, 2000);
3637 rxdctl
= IXGBE_READ_REG(hw
, IXGBE_RXDCTL(reg_idx
));
3638 } while (--wait_loop
&& !(rxdctl
& IXGBE_RXDCTL_ENABLE
));
3641 e_err(drv
, "RXDCTL.ENABLE on Rx queue %d not set within "
3642 "the polling period\n", reg_idx
);
3646 void ixgbe_disable_rx_queue(struct ixgbe_adapter
*adapter
,
3647 struct ixgbe_ring
*ring
)
3649 struct ixgbe_hw
*hw
= &adapter
->hw
;
3650 int wait_loop
= IXGBE_MAX_RX_DESC_POLL
;
3652 u8 reg_idx
= ring
->reg_idx
;
3654 if (ixgbe_removed(hw
->hw_addr
))
3656 rxdctl
= IXGBE_READ_REG(hw
, IXGBE_RXDCTL(reg_idx
));
3657 rxdctl
&= ~IXGBE_RXDCTL_ENABLE
;
3659 /* write value back with RXDCTL.ENABLE bit cleared */
3660 IXGBE_WRITE_REG(hw
, IXGBE_RXDCTL(reg_idx
), rxdctl
);
3662 if (hw
->mac
.type
== ixgbe_mac_82598EB
&&
3663 !(IXGBE_READ_REG(hw
, IXGBE_LINKS
) & IXGBE_LINKS_UP
))
3666 /* the hardware may take up to 100us to really disable the rx queue */
3669 rxdctl
= IXGBE_READ_REG(hw
, IXGBE_RXDCTL(reg_idx
));
3670 } while (--wait_loop
&& (rxdctl
& IXGBE_RXDCTL_ENABLE
));
3673 e_err(drv
, "RXDCTL.ENABLE on Rx queue %d not cleared within "
3674 "the polling period\n", reg_idx
);
3678 void ixgbe_configure_rx_ring(struct ixgbe_adapter
*adapter
,
3679 struct ixgbe_ring
*ring
)
3681 struct ixgbe_hw
*hw
= &adapter
->hw
;
3682 u64 rdba
= ring
->dma
;
3684 u8 reg_idx
= ring
->reg_idx
;
3686 /* disable queue to avoid issues while updating state */
3687 rxdctl
= IXGBE_READ_REG(hw
, IXGBE_RXDCTL(reg_idx
));
3688 ixgbe_disable_rx_queue(adapter
, ring
);
3690 IXGBE_WRITE_REG(hw
, IXGBE_RDBAL(reg_idx
), (rdba
& DMA_BIT_MASK(32)));
3691 IXGBE_WRITE_REG(hw
, IXGBE_RDBAH(reg_idx
), (rdba
>> 32));
3692 IXGBE_WRITE_REG(hw
, IXGBE_RDLEN(reg_idx
),
3693 ring
->count
* sizeof(union ixgbe_adv_rx_desc
));
3694 /* Force flushing of IXGBE_RDLEN to prevent MDD */
3695 IXGBE_WRITE_FLUSH(hw
);
3697 IXGBE_WRITE_REG(hw
, IXGBE_RDH(reg_idx
), 0);
3698 IXGBE_WRITE_REG(hw
, IXGBE_RDT(reg_idx
), 0);
3699 ring
->tail
= adapter
->io_addr
+ IXGBE_RDT(reg_idx
);
3701 ixgbe_configure_srrctl(adapter
, ring
);
3702 ixgbe_configure_rscctl(adapter
, ring
);
3704 if (hw
->mac
.type
== ixgbe_mac_82598EB
) {
3706 * enable cache line friendly hardware writes:
3707 * PTHRESH=32 descriptors (half the internal cache),
3708 * this also removes ugly rx_no_buffer_count increment
3709 * HTHRESH=4 descriptors (to minimize latency on fetch)
3710 * WTHRESH=8 burst writeback up to two cache lines
3712 rxdctl
&= ~0x3FFFFF;
3716 /* enable receive descriptor ring */
3717 rxdctl
|= IXGBE_RXDCTL_ENABLE
;
3718 IXGBE_WRITE_REG(hw
, IXGBE_RXDCTL(reg_idx
), rxdctl
);
3720 ixgbe_rx_desc_queue_enable(adapter
, ring
);
3721 ixgbe_alloc_rx_buffers(ring
, ixgbe_desc_unused(ring
));
3724 static void ixgbe_setup_psrtype(struct ixgbe_adapter
*adapter
)
3726 struct ixgbe_hw
*hw
= &adapter
->hw
;
3727 int rss_i
= adapter
->ring_feature
[RING_F_RSS
].indices
;
3730 /* PSRTYPE must be initialized in non 82598 adapters */
3731 u32 psrtype
= IXGBE_PSRTYPE_TCPHDR
|
3732 IXGBE_PSRTYPE_UDPHDR
|
3733 IXGBE_PSRTYPE_IPV4HDR
|
3734 IXGBE_PSRTYPE_L2HDR
|
3735 IXGBE_PSRTYPE_IPV6HDR
;
3737 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
3741 psrtype
|= 2u << 29;
3743 psrtype
|= 1u << 29;
3745 for_each_set_bit(pool
, &adapter
->fwd_bitmask
, 32)
3746 IXGBE_WRITE_REG(hw
, IXGBE_PSRTYPE(VMDQ_P(pool
)), psrtype
);
3749 static void ixgbe_configure_virtualization(struct ixgbe_adapter
*adapter
)
3751 struct ixgbe_hw
*hw
= &adapter
->hw
;
3752 u32 reg_offset
, vf_shift
;
3753 u32 gcr_ext
, vmdctl
;
3756 if (!(adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
))
3759 vmdctl
= IXGBE_READ_REG(hw
, IXGBE_VT_CTL
);
3760 vmdctl
|= IXGBE_VMD_CTL_VMDQ_EN
;
3761 vmdctl
&= ~IXGBE_VT_CTL_POOL_MASK
;
3762 vmdctl
|= VMDQ_P(0) << IXGBE_VT_CTL_POOL_SHIFT
;
3763 vmdctl
|= IXGBE_VT_CTL_REPLEN
;
3764 IXGBE_WRITE_REG(hw
, IXGBE_VT_CTL
, vmdctl
);
3766 vf_shift
= VMDQ_P(0) % 32;
3767 reg_offset
= (VMDQ_P(0) >= 32) ? 1 : 0;
3769 /* Enable only the PF's pool for Tx/Rx */
3770 IXGBE_WRITE_REG(hw
, IXGBE_VFRE(reg_offset
), GENMASK(31, vf_shift
));
3771 IXGBE_WRITE_REG(hw
, IXGBE_VFRE(reg_offset
^ 1), reg_offset
- 1);
3772 IXGBE_WRITE_REG(hw
, IXGBE_VFTE(reg_offset
), GENMASK(31, vf_shift
));
3773 IXGBE_WRITE_REG(hw
, IXGBE_VFTE(reg_offset
^ 1), reg_offset
- 1);
3774 if (adapter
->bridge_mode
== BRIDGE_MODE_VEB
)
3775 IXGBE_WRITE_REG(hw
, IXGBE_PFDTXGSWC
, IXGBE_PFDTXGSWC_VT_LBEN
);
3777 /* Map PF MAC address in RAR Entry 0 to first pool following VFs */
3778 hw
->mac
.ops
.set_vmdq(hw
, 0, VMDQ_P(0));
3780 /* clear VLAN promisc flag so VFTA will be updated if necessary */
3781 adapter
->flags2
&= ~IXGBE_FLAG2_VLAN_PROMISC
;
3784 * Set up VF register offsets for selected VT Mode,
3785 * i.e. 32 or 64 VFs for SR-IOV
3787 switch (adapter
->ring_feature
[RING_F_VMDQ
].mask
) {
3788 case IXGBE_82599_VMDQ_8Q_MASK
:
3789 gcr_ext
= IXGBE_GCR_EXT_VT_MODE_16
;
3791 case IXGBE_82599_VMDQ_4Q_MASK
:
3792 gcr_ext
= IXGBE_GCR_EXT_VT_MODE_32
;
3795 gcr_ext
= IXGBE_GCR_EXT_VT_MODE_64
;
3799 IXGBE_WRITE_REG(hw
, IXGBE_GCR_EXT
, gcr_ext
);
3801 for (i
= 0; i
< adapter
->num_vfs
; i
++) {
3802 /* configure spoof checking */
3803 ixgbe_ndo_set_vf_spoofchk(adapter
->netdev
, i
,
3804 adapter
->vfinfo
[i
].spoofchk_enabled
);
3806 /* Enable/Disable RSS query feature */
3807 ixgbe_ndo_set_vf_rss_query_en(adapter
->netdev
, i
,
3808 adapter
->vfinfo
[i
].rss_query_enabled
);
3812 static void ixgbe_set_rx_buffer_len(struct ixgbe_adapter
*adapter
)
3814 struct ixgbe_hw
*hw
= &adapter
->hw
;
3815 struct net_device
*netdev
= adapter
->netdev
;
3816 int max_frame
= netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
3817 struct ixgbe_ring
*rx_ring
;
3822 /* adjust max frame to be able to do baby jumbo for FCoE */
3823 if ((adapter
->flags
& IXGBE_FLAG_FCOE_ENABLED
) &&
3824 (max_frame
< IXGBE_FCOE_JUMBO_FRAME_SIZE
))
3825 max_frame
= IXGBE_FCOE_JUMBO_FRAME_SIZE
;
3827 #endif /* IXGBE_FCOE */
3829 /* adjust max frame to be at least the size of a standard frame */
3830 if (max_frame
< (ETH_FRAME_LEN
+ ETH_FCS_LEN
))
3831 max_frame
= (ETH_FRAME_LEN
+ ETH_FCS_LEN
);
3833 mhadd
= IXGBE_READ_REG(hw
, IXGBE_MHADD
);
3834 if (max_frame
!= (mhadd
>> IXGBE_MHADD_MFS_SHIFT
)) {
3835 mhadd
&= ~IXGBE_MHADD_MFS_MASK
;
3836 mhadd
|= max_frame
<< IXGBE_MHADD_MFS_SHIFT
;
3838 IXGBE_WRITE_REG(hw
, IXGBE_MHADD
, mhadd
);
3841 hlreg0
= IXGBE_READ_REG(hw
, IXGBE_HLREG0
);
3842 /* set jumbo enable since MHADD.MFS is keeping size locked at max_frame */
3843 hlreg0
|= IXGBE_HLREG0_JUMBOEN
;
3844 IXGBE_WRITE_REG(hw
, IXGBE_HLREG0
, hlreg0
);
3847 * Setup the HW Rx Head and Tail Descriptor Pointers and
3848 * the Base and Length of the Rx Descriptor Ring
3850 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
3851 rx_ring
= adapter
->rx_ring
[i
];
3852 if (adapter
->flags2
& IXGBE_FLAG2_RSC_ENABLED
)
3853 set_ring_rsc_enabled(rx_ring
);
3855 clear_ring_rsc_enabled(rx_ring
);
3859 static void ixgbe_setup_rdrxctl(struct ixgbe_adapter
*adapter
)
3861 struct ixgbe_hw
*hw
= &adapter
->hw
;
3862 u32 rdrxctl
= IXGBE_READ_REG(hw
, IXGBE_RDRXCTL
);
3864 switch (hw
->mac
.type
) {
3865 case ixgbe_mac_82598EB
:
3867 * For VMDq support of different descriptor types or
3868 * buffer sizes through the use of multiple SRRCTL
3869 * registers, RDRXCTL.MVMEN must be set to 1
3871 * also, the manual doesn't mention it clearly but DCA hints
3872 * will only use queue 0's tags unless this bit is set. Side
3873 * effects of setting this bit are only that SRRCTL must be
3874 * fully programmed [0..15]
3876 rdrxctl
|= IXGBE_RDRXCTL_MVMEN
;
3878 case ixgbe_mac_X550
:
3879 case ixgbe_mac_X550EM_x
:
3880 case ixgbe_mac_x550em_a
:
3881 if (adapter
->num_vfs
)
3882 rdrxctl
|= IXGBE_RDRXCTL_PSP
;
3883 /* fall through for older HW */
3884 case ixgbe_mac_82599EB
:
3885 case ixgbe_mac_X540
:
3886 /* Disable RSC for ACK packets */
3887 IXGBE_WRITE_REG(hw
, IXGBE_RSCDBU
,
3888 (IXGBE_RSCDBU_RSCACKDIS
| IXGBE_READ_REG(hw
, IXGBE_RSCDBU
)));
3889 rdrxctl
&= ~IXGBE_RDRXCTL_RSCFRSTSIZE
;
3890 /* hardware requires some bits to be set by default */
3891 rdrxctl
|= (IXGBE_RDRXCTL_RSCACKC
| IXGBE_RDRXCTL_FCOE_WRFIX
);
3892 rdrxctl
|= IXGBE_RDRXCTL_CRCSTRIP
;
3895 /* We should do nothing since we don't know this hardware */
3899 IXGBE_WRITE_REG(hw
, IXGBE_RDRXCTL
, rdrxctl
);
3903 * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset
3904 * @adapter: board private structure
3906 * Configure the Rx unit of the MAC after a reset.
3908 static void ixgbe_configure_rx(struct ixgbe_adapter
*adapter
)
3910 struct ixgbe_hw
*hw
= &adapter
->hw
;
3914 /* disable receives while setting up the descriptors */
3915 hw
->mac
.ops
.disable_rx(hw
);
3917 ixgbe_setup_psrtype(adapter
);
3918 ixgbe_setup_rdrxctl(adapter
);
3921 rfctl
= IXGBE_READ_REG(hw
, IXGBE_RFCTL
);
3922 rfctl
&= ~IXGBE_RFCTL_RSC_DIS
;
3923 if (!(adapter
->flags2
& IXGBE_FLAG2_RSC_ENABLED
))
3924 rfctl
|= IXGBE_RFCTL_RSC_DIS
;
3925 IXGBE_WRITE_REG(hw
, IXGBE_RFCTL
, rfctl
);
3927 /* Program registers for the distribution of queues */
3928 ixgbe_setup_mrqc(adapter
);
3930 /* set_rx_buffer_len must be called before ring initialization */
3931 ixgbe_set_rx_buffer_len(adapter
);
3934 * Setup the HW Rx Head and Tail Descriptor Pointers and
3935 * the Base and Length of the Rx Descriptor Ring
3937 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
3938 ixgbe_configure_rx_ring(adapter
, adapter
->rx_ring
[i
]);
3940 rxctrl
= IXGBE_READ_REG(hw
, IXGBE_RXCTRL
);
3941 /* disable drop enable for 82598 parts */
3942 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
3943 rxctrl
|= IXGBE_RXCTRL_DMBYPS
;
3945 /* enable all receives */
3946 rxctrl
|= IXGBE_RXCTRL_RXEN
;
3947 hw
->mac
.ops
.enable_rx_dma(hw
, rxctrl
);
3950 static int ixgbe_vlan_rx_add_vid(struct net_device
*netdev
,
3951 __be16 proto
, u16 vid
)
3953 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
3954 struct ixgbe_hw
*hw
= &adapter
->hw
;
3956 /* add VID to filter table */
3957 if (!vid
|| !(adapter
->flags2
& IXGBE_FLAG2_VLAN_PROMISC
))
3958 hw
->mac
.ops
.set_vfta(&adapter
->hw
, vid
, VMDQ_P(0), true, !!vid
);
3960 set_bit(vid
, adapter
->active_vlans
);
3965 static int ixgbe_find_vlvf_entry(struct ixgbe_hw
*hw
, u32 vlan
)
3970 /* short cut the special case */
3974 /* Search for the vlan id in the VLVF entries */
3975 for (idx
= IXGBE_VLVF_ENTRIES
; --idx
;) {
3976 vlvf
= IXGBE_READ_REG(hw
, IXGBE_VLVF(idx
));
3977 if ((vlvf
& VLAN_VID_MASK
) == vlan
)
3984 void ixgbe_update_pf_promisc_vlvf(struct ixgbe_adapter
*adapter
, u32 vid
)
3986 struct ixgbe_hw
*hw
= &adapter
->hw
;
3990 idx
= ixgbe_find_vlvf_entry(hw
, vid
);
3994 /* See if any other pools are set for this VLAN filter
3995 * entry other than the PF.
3997 word
= idx
* 2 + (VMDQ_P(0) / 32);
3998 bits
= ~BIT(VMDQ_P(0) % 32);
3999 bits
&= IXGBE_READ_REG(hw
, IXGBE_VLVFB(word
));
4001 /* Disable the filter so this falls into the default pool. */
4002 if (!bits
&& !IXGBE_READ_REG(hw
, IXGBE_VLVFB(word
^ 1))) {
4003 if (!(adapter
->flags2
& IXGBE_FLAG2_VLAN_PROMISC
))
4004 IXGBE_WRITE_REG(hw
, IXGBE_VLVFB(word
), 0);
4005 IXGBE_WRITE_REG(hw
, IXGBE_VLVF(idx
), 0);
4009 static int ixgbe_vlan_rx_kill_vid(struct net_device
*netdev
,
4010 __be16 proto
, u16 vid
)
4012 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
4013 struct ixgbe_hw
*hw
= &adapter
->hw
;
4015 /* remove VID from filter table */
4016 if (vid
&& !(adapter
->flags2
& IXGBE_FLAG2_VLAN_PROMISC
))
4017 hw
->mac
.ops
.set_vfta(hw
, vid
, VMDQ_P(0), false, true);
4019 clear_bit(vid
, adapter
->active_vlans
);
4025 * ixgbe_vlan_strip_disable - helper to disable hw vlan stripping
4026 * @adapter: driver data
4028 static void ixgbe_vlan_strip_disable(struct ixgbe_adapter
*adapter
)
4030 struct ixgbe_hw
*hw
= &adapter
->hw
;
4034 switch (hw
->mac
.type
) {
4035 case ixgbe_mac_82598EB
:
4036 vlnctrl
= IXGBE_READ_REG(hw
, IXGBE_VLNCTRL
);
4037 vlnctrl
&= ~IXGBE_VLNCTRL_VME
;
4038 IXGBE_WRITE_REG(hw
, IXGBE_VLNCTRL
, vlnctrl
);
4040 case ixgbe_mac_82599EB
:
4041 case ixgbe_mac_X540
:
4042 case ixgbe_mac_X550
:
4043 case ixgbe_mac_X550EM_x
:
4044 case ixgbe_mac_x550em_a
:
4045 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
4046 struct ixgbe_ring
*ring
= adapter
->rx_ring
[i
];
4048 if (ring
->l2_accel_priv
)
4051 vlnctrl
= IXGBE_READ_REG(hw
, IXGBE_RXDCTL(j
));
4052 vlnctrl
&= ~IXGBE_RXDCTL_VME
;
4053 IXGBE_WRITE_REG(hw
, IXGBE_RXDCTL(j
), vlnctrl
);
4062 * ixgbe_vlan_strip_enable - helper to enable hw vlan stripping
4063 * @adapter: driver data
4065 static void ixgbe_vlan_strip_enable(struct ixgbe_adapter
*adapter
)
4067 struct ixgbe_hw
*hw
= &adapter
->hw
;
4071 switch (hw
->mac
.type
) {
4072 case ixgbe_mac_82598EB
:
4073 vlnctrl
= IXGBE_READ_REG(hw
, IXGBE_VLNCTRL
);
4074 vlnctrl
|= IXGBE_VLNCTRL_VME
;
4075 IXGBE_WRITE_REG(hw
, IXGBE_VLNCTRL
, vlnctrl
);
4077 case ixgbe_mac_82599EB
:
4078 case ixgbe_mac_X540
:
4079 case ixgbe_mac_X550
:
4080 case ixgbe_mac_X550EM_x
:
4081 case ixgbe_mac_x550em_a
:
4082 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
4083 struct ixgbe_ring
*ring
= adapter
->rx_ring
[i
];
4085 if (ring
->l2_accel_priv
)
4088 vlnctrl
= IXGBE_READ_REG(hw
, IXGBE_RXDCTL(j
));
4089 vlnctrl
|= IXGBE_RXDCTL_VME
;
4090 IXGBE_WRITE_REG(hw
, IXGBE_RXDCTL(j
), vlnctrl
);
4098 static void ixgbe_vlan_promisc_enable(struct ixgbe_adapter
*adapter
)
4100 struct ixgbe_hw
*hw
= &adapter
->hw
;
4103 vlnctrl
= IXGBE_READ_REG(hw
, IXGBE_VLNCTRL
);
4105 switch (hw
->mac
.type
) {
4106 case ixgbe_mac_82599EB
:
4107 case ixgbe_mac_X540
:
4108 case ixgbe_mac_X550
:
4109 case ixgbe_mac_X550EM_x
:
4110 case ixgbe_mac_x550em_a
:
4112 if (adapter
->flags
& IXGBE_FLAG_VMDQ_ENABLED
)
4115 case ixgbe_mac_82598EB
:
4116 /* legacy case, we can just disable VLAN filtering */
4117 vlnctrl
&= ~IXGBE_VLNCTRL_VFE
;
4118 IXGBE_WRITE_REG(hw
, IXGBE_VLNCTRL
, vlnctrl
);
4122 /* We are already in VLAN promisc, nothing to do */
4123 if (adapter
->flags2
& IXGBE_FLAG2_VLAN_PROMISC
)
4126 /* Set flag so we don't redo unnecessary work */
4127 adapter
->flags2
|= IXGBE_FLAG2_VLAN_PROMISC
;
4129 /* For VMDq and SR-IOV we must leave VLAN filtering enabled */
4130 vlnctrl
|= IXGBE_VLNCTRL_VFE
;
4131 IXGBE_WRITE_REG(hw
, IXGBE_VLNCTRL
, vlnctrl
);
4133 /* Add PF to all active pools */
4134 for (i
= IXGBE_VLVF_ENTRIES
; --i
;) {
4135 u32 reg_offset
= IXGBE_VLVFB(i
* 2 + VMDQ_P(0) / 32);
4136 u32 vlvfb
= IXGBE_READ_REG(hw
, reg_offset
);
4138 vlvfb
|= BIT(VMDQ_P(0) % 32);
4139 IXGBE_WRITE_REG(hw
, reg_offset
, vlvfb
);
4142 /* Set all bits in the VLAN filter table array */
4143 for (i
= hw
->mac
.vft_size
; i
--;)
4144 IXGBE_WRITE_REG(hw
, IXGBE_VFTA(i
), ~0U);
4147 #define VFTA_BLOCK_SIZE 8
4148 static void ixgbe_scrub_vfta(struct ixgbe_adapter
*adapter
, u32 vfta_offset
)
4150 struct ixgbe_hw
*hw
= &adapter
->hw
;
4151 u32 vfta
[VFTA_BLOCK_SIZE
] = { 0 };
4152 u32 vid_start
= vfta_offset
* 32;
4153 u32 vid_end
= vid_start
+ (VFTA_BLOCK_SIZE
* 32);
4154 u32 i
, vid
, word
, bits
;
4156 for (i
= IXGBE_VLVF_ENTRIES
; --i
;) {
4157 u32 vlvf
= IXGBE_READ_REG(hw
, IXGBE_VLVF(i
));
4159 /* pull VLAN ID from VLVF */
4160 vid
= vlvf
& VLAN_VID_MASK
;
4162 /* only concern outselves with a certain range */
4163 if (vid
< vid_start
|| vid
>= vid_end
)
4167 /* record VLAN ID in VFTA */
4168 vfta
[(vid
- vid_start
) / 32] |= BIT(vid
% 32);
4170 /* if PF is part of this then continue */
4171 if (test_bit(vid
, adapter
->active_vlans
))
4175 /* remove PF from the pool */
4176 word
= i
* 2 + VMDQ_P(0) / 32;
4177 bits
= ~BIT(VMDQ_P(0) % 32);
4178 bits
&= IXGBE_READ_REG(hw
, IXGBE_VLVFB(word
));
4179 IXGBE_WRITE_REG(hw
, IXGBE_VLVFB(word
), bits
);
4182 /* extract values from active_vlans and write back to VFTA */
4183 for (i
= VFTA_BLOCK_SIZE
; i
--;) {
4184 vid
= (vfta_offset
+ i
) * 32;
4185 word
= vid
/ BITS_PER_LONG
;
4186 bits
= vid
% BITS_PER_LONG
;
4188 vfta
[i
] |= adapter
->active_vlans
[word
] >> bits
;
4190 IXGBE_WRITE_REG(hw
, IXGBE_VFTA(vfta_offset
+ i
), vfta
[i
]);
4194 static void ixgbe_vlan_promisc_disable(struct ixgbe_adapter
*adapter
)
4196 struct ixgbe_hw
*hw
= &adapter
->hw
;
4199 /* Set VLAN filtering to enabled */
4200 vlnctrl
= IXGBE_READ_REG(hw
, IXGBE_VLNCTRL
);
4201 vlnctrl
|= IXGBE_VLNCTRL_VFE
;
4202 IXGBE_WRITE_REG(hw
, IXGBE_VLNCTRL
, vlnctrl
);
4204 switch (hw
->mac
.type
) {
4205 case ixgbe_mac_82599EB
:
4206 case ixgbe_mac_X540
:
4207 case ixgbe_mac_X550
:
4208 case ixgbe_mac_X550EM_x
:
4209 case ixgbe_mac_x550em_a
:
4211 if (adapter
->flags
& IXGBE_FLAG_VMDQ_ENABLED
)
4214 case ixgbe_mac_82598EB
:
4218 /* We are not in VLAN promisc, nothing to do */
4219 if (!(adapter
->flags2
& IXGBE_FLAG2_VLAN_PROMISC
))
4222 /* Set flag so we don't redo unnecessary work */
4223 adapter
->flags2
&= ~IXGBE_FLAG2_VLAN_PROMISC
;
4225 for (i
= 0; i
< hw
->mac
.vft_size
; i
+= VFTA_BLOCK_SIZE
)
4226 ixgbe_scrub_vfta(adapter
, i
);
4229 static void ixgbe_restore_vlan(struct ixgbe_adapter
*adapter
)
4233 ixgbe_vlan_rx_add_vid(adapter
->netdev
, htons(ETH_P_8021Q
), 0);
4235 for_each_set_bit_from(vid
, adapter
->active_vlans
, VLAN_N_VID
)
4236 ixgbe_vlan_rx_add_vid(adapter
->netdev
, htons(ETH_P_8021Q
), vid
);
4240 * ixgbe_write_mc_addr_list - write multicast addresses to MTA
4241 * @netdev: network interface device structure
4243 * Writes multicast address list to the MTA hash table.
4244 * Returns: -ENOMEM on failure
4245 * 0 on no addresses written
4246 * X on writing X addresses to MTA
4248 static int ixgbe_write_mc_addr_list(struct net_device
*netdev
)
4250 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
4251 struct ixgbe_hw
*hw
= &adapter
->hw
;
4253 if (!netif_running(netdev
))
4256 if (hw
->mac
.ops
.update_mc_addr_list
)
4257 hw
->mac
.ops
.update_mc_addr_list(hw
, netdev
);
4261 #ifdef CONFIG_PCI_IOV
4262 ixgbe_restore_vf_multicasts(adapter
);
4265 return netdev_mc_count(netdev
);
4268 #ifdef CONFIG_PCI_IOV
4269 void ixgbe_full_sync_mac_table(struct ixgbe_adapter
*adapter
)
4271 struct ixgbe_mac_addr
*mac_table
= &adapter
->mac_table
[0];
4272 struct ixgbe_hw
*hw
= &adapter
->hw
;
4275 for (i
= 0; i
< hw
->mac
.num_rar_entries
; i
++, mac_table
++) {
4276 mac_table
->state
&= ~IXGBE_MAC_STATE_MODIFIED
;
4278 if (mac_table
->state
& IXGBE_MAC_STATE_IN_USE
)
4279 hw
->mac
.ops
.set_rar(hw
, i
,
4284 hw
->mac
.ops
.clear_rar(hw
, i
);
4289 static void ixgbe_sync_mac_table(struct ixgbe_adapter
*adapter
)
4291 struct ixgbe_mac_addr
*mac_table
= &adapter
->mac_table
[0];
4292 struct ixgbe_hw
*hw
= &adapter
->hw
;
4295 for (i
= 0; i
< hw
->mac
.num_rar_entries
; i
++, mac_table
++) {
4296 if (!(mac_table
->state
& IXGBE_MAC_STATE_MODIFIED
))
4299 mac_table
->state
&= ~IXGBE_MAC_STATE_MODIFIED
;
4301 if (mac_table
->state
& IXGBE_MAC_STATE_IN_USE
)
4302 hw
->mac
.ops
.set_rar(hw
, i
,
4307 hw
->mac
.ops
.clear_rar(hw
, i
);
4311 static void ixgbe_flush_sw_mac_table(struct ixgbe_adapter
*adapter
)
4313 struct ixgbe_mac_addr
*mac_table
= &adapter
->mac_table
[0];
4314 struct ixgbe_hw
*hw
= &adapter
->hw
;
4317 for (i
= 0; i
< hw
->mac
.num_rar_entries
; i
++, mac_table
++) {
4318 mac_table
->state
|= IXGBE_MAC_STATE_MODIFIED
;
4319 mac_table
->state
&= ~IXGBE_MAC_STATE_IN_USE
;
4322 ixgbe_sync_mac_table(adapter
);
4325 static int ixgbe_available_rars(struct ixgbe_adapter
*adapter
, u16 pool
)
4327 struct ixgbe_mac_addr
*mac_table
= &adapter
->mac_table
[0];
4328 struct ixgbe_hw
*hw
= &adapter
->hw
;
4331 for (i
= 0; i
< hw
->mac
.num_rar_entries
; i
++, mac_table
++) {
4332 /* do not count default RAR as available */
4333 if (mac_table
->state
& IXGBE_MAC_STATE_DEFAULT
)
4336 /* only count unused and addresses that belong to us */
4337 if (mac_table
->state
& IXGBE_MAC_STATE_IN_USE
) {
4338 if (mac_table
->pool
!= pool
)
4348 /* this function destroys the first RAR entry */
4349 static void ixgbe_mac_set_default_filter(struct ixgbe_adapter
*adapter
)
4351 struct ixgbe_mac_addr
*mac_table
= &adapter
->mac_table
[0];
4352 struct ixgbe_hw
*hw
= &adapter
->hw
;
4354 memcpy(&mac_table
->addr
, hw
->mac
.addr
, ETH_ALEN
);
4355 mac_table
->pool
= VMDQ_P(0);
4357 mac_table
->state
= IXGBE_MAC_STATE_DEFAULT
| IXGBE_MAC_STATE_IN_USE
;
4359 hw
->mac
.ops
.set_rar(hw
, 0, mac_table
->addr
, mac_table
->pool
,
4363 int ixgbe_add_mac_filter(struct ixgbe_adapter
*adapter
,
4364 const u8
*addr
, u16 pool
)
4366 struct ixgbe_mac_addr
*mac_table
= &adapter
->mac_table
[0];
4367 struct ixgbe_hw
*hw
= &adapter
->hw
;
4370 if (is_zero_ether_addr(addr
))
4373 for (i
= 0; i
< hw
->mac
.num_rar_entries
; i
++, mac_table
++) {
4374 if (mac_table
->state
& IXGBE_MAC_STATE_IN_USE
)
4377 ether_addr_copy(mac_table
->addr
, addr
);
4378 mac_table
->pool
= pool
;
4380 mac_table
->state
|= IXGBE_MAC_STATE_MODIFIED
|
4381 IXGBE_MAC_STATE_IN_USE
;
4383 ixgbe_sync_mac_table(adapter
);
4391 int ixgbe_del_mac_filter(struct ixgbe_adapter
*adapter
,
4392 const u8
*addr
, u16 pool
)
4394 struct ixgbe_mac_addr
*mac_table
= &adapter
->mac_table
[0];
4395 struct ixgbe_hw
*hw
= &adapter
->hw
;
4398 if (is_zero_ether_addr(addr
))
4401 /* search table for addr, if found clear IN_USE flag and sync */
4402 for (i
= 0; i
< hw
->mac
.num_rar_entries
; i
++, mac_table
++) {
4403 /* we can only delete an entry if it is in use */
4404 if (!(mac_table
->state
& IXGBE_MAC_STATE_IN_USE
))
4406 /* we only care about entries that belong to the given pool */
4407 if (mac_table
->pool
!= pool
)
4409 /* we only care about a specific MAC address */
4410 if (!ether_addr_equal(addr
, mac_table
->addr
))
4413 mac_table
->state
|= IXGBE_MAC_STATE_MODIFIED
;
4414 mac_table
->state
&= ~IXGBE_MAC_STATE_IN_USE
;
4416 ixgbe_sync_mac_table(adapter
);
4424 * ixgbe_write_uc_addr_list - write unicast addresses to RAR table
4425 * @netdev: network interface device structure
4427 * Writes unicast address list to the RAR table.
4428 * Returns: -ENOMEM on failure/insufficient address space
4429 * 0 on no addresses written
4430 * X on writing X addresses to the RAR table
4432 static int ixgbe_write_uc_addr_list(struct net_device
*netdev
, int vfn
)
4434 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
4437 /* return ENOMEM indicating insufficient memory for addresses */
4438 if (netdev_uc_count(netdev
) > ixgbe_available_rars(adapter
, vfn
))
4441 if (!netdev_uc_empty(netdev
)) {
4442 struct netdev_hw_addr
*ha
;
4443 netdev_for_each_uc_addr(ha
, netdev
) {
4444 ixgbe_del_mac_filter(adapter
, ha
->addr
, vfn
);
4445 ixgbe_add_mac_filter(adapter
, ha
->addr
, vfn
);
4452 static int ixgbe_uc_sync(struct net_device
*netdev
, const unsigned char *addr
)
4454 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
4457 ret
= ixgbe_add_mac_filter(adapter
, addr
, VMDQ_P(0));
4459 return min_t(int, ret
, 0);
4462 static int ixgbe_uc_unsync(struct net_device
*netdev
, const unsigned char *addr
)
4464 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
4466 ixgbe_del_mac_filter(adapter
, addr
, VMDQ_P(0));
4472 * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set
4473 * @netdev: network interface device structure
4475 * The set_rx_method entry point is called whenever the unicast/multicast
4476 * address list or the network interface flags are updated. This routine is
4477 * responsible for configuring the hardware for proper unicast, multicast and
4480 void ixgbe_set_rx_mode(struct net_device
*netdev
)
4482 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
4483 struct ixgbe_hw
*hw
= &adapter
->hw
;
4484 u32 fctrl
, vmolr
= IXGBE_VMOLR_BAM
| IXGBE_VMOLR_AUPE
;
4485 netdev_features_t features
= netdev
->features
;
4488 /* Check for Promiscuous and All Multicast modes */
4489 fctrl
= IXGBE_READ_REG(hw
, IXGBE_FCTRL
);
4491 /* set all bits that we expect to always be set */
4492 fctrl
&= ~IXGBE_FCTRL_SBP
; /* disable store-bad-packets */
4493 fctrl
|= IXGBE_FCTRL_BAM
;
4494 fctrl
|= IXGBE_FCTRL_DPF
; /* discard pause frames when FC enabled */
4495 fctrl
|= IXGBE_FCTRL_PMCF
;
4497 /* clear the bits we are changing the status of */
4498 fctrl
&= ~(IXGBE_FCTRL_UPE
| IXGBE_FCTRL_MPE
);
4499 if (netdev
->flags
& IFF_PROMISC
) {
4500 hw
->addr_ctrl
.user_set_promisc
= true;
4501 fctrl
|= (IXGBE_FCTRL_UPE
| IXGBE_FCTRL_MPE
);
4502 vmolr
|= IXGBE_VMOLR_MPE
;
4503 features
&= ~NETIF_F_HW_VLAN_CTAG_FILTER
;
4505 if (netdev
->flags
& IFF_ALLMULTI
) {
4506 fctrl
|= IXGBE_FCTRL_MPE
;
4507 vmolr
|= IXGBE_VMOLR_MPE
;
4509 hw
->addr_ctrl
.user_set_promisc
= false;
4513 * Write addresses to available RAR registers, if there is not
4514 * sufficient space to store all the addresses then enable
4515 * unicast promiscuous mode
4517 if (__dev_uc_sync(netdev
, ixgbe_uc_sync
, ixgbe_uc_unsync
)) {
4518 fctrl
|= IXGBE_FCTRL_UPE
;
4519 vmolr
|= IXGBE_VMOLR_ROPE
;
4522 /* Write addresses to the MTA, if the attempt fails
4523 * then we should just turn on promiscuous mode so
4524 * that we can at least receive multicast traffic
4526 count
= ixgbe_write_mc_addr_list(netdev
);
4528 fctrl
|= IXGBE_FCTRL_MPE
;
4529 vmolr
|= IXGBE_VMOLR_MPE
;
4531 vmolr
|= IXGBE_VMOLR_ROMPE
;
4534 if (hw
->mac
.type
!= ixgbe_mac_82598EB
) {
4535 vmolr
|= IXGBE_READ_REG(hw
, IXGBE_VMOLR(VMDQ_P(0))) &
4536 ~(IXGBE_VMOLR_MPE
| IXGBE_VMOLR_ROMPE
|
4538 IXGBE_WRITE_REG(hw
, IXGBE_VMOLR(VMDQ_P(0)), vmolr
);
4541 /* This is useful for sniffing bad packets. */
4542 if (features
& NETIF_F_RXALL
) {
4543 /* UPE and MPE will be handled by normal PROMISC logic
4544 * in e1000e_set_rx_mode */
4545 fctrl
|= (IXGBE_FCTRL_SBP
| /* Receive bad packets */
4546 IXGBE_FCTRL_BAM
| /* RX All Bcast Pkts */
4547 IXGBE_FCTRL_PMCF
); /* RX All MAC Ctrl Pkts */
4549 fctrl
&= ~(IXGBE_FCTRL_DPF
);
4550 /* NOTE: VLAN filtering is disabled by setting PROMISC */
4553 IXGBE_WRITE_REG(hw
, IXGBE_FCTRL
, fctrl
);
4555 if (features
& NETIF_F_HW_VLAN_CTAG_RX
)
4556 ixgbe_vlan_strip_enable(adapter
);
4558 ixgbe_vlan_strip_disable(adapter
);
4560 if (features
& NETIF_F_HW_VLAN_CTAG_FILTER
)
4561 ixgbe_vlan_promisc_disable(adapter
);
4563 ixgbe_vlan_promisc_enable(adapter
);
4566 static void ixgbe_napi_enable_all(struct ixgbe_adapter
*adapter
)
4570 for (q_idx
= 0; q_idx
< adapter
->num_q_vectors
; q_idx
++) {
4571 ixgbe_qv_init_lock(adapter
->q_vector
[q_idx
]);
4572 napi_enable(&adapter
->q_vector
[q_idx
]->napi
);
4576 static void ixgbe_napi_disable_all(struct ixgbe_adapter
*adapter
)
4580 for (q_idx
= 0; q_idx
< adapter
->num_q_vectors
; q_idx
++) {
4581 napi_disable(&adapter
->q_vector
[q_idx
]->napi
);
4582 while (!ixgbe_qv_disable(adapter
->q_vector
[q_idx
])) {
4583 pr_info("QV %d locked\n", q_idx
);
4584 usleep_range(1000, 20000);
4589 static void ixgbe_clear_vxlan_port(struct ixgbe_adapter
*adapter
)
4591 switch (adapter
->hw
.mac
.type
) {
4592 case ixgbe_mac_X550
:
4593 case ixgbe_mac_X550EM_x
:
4594 case ixgbe_mac_x550em_a
:
4595 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_VXLANCTRL
, 0);
4596 adapter
->vxlan_port
= 0;
4603 #ifdef CONFIG_IXGBE_DCB
4605 * ixgbe_configure_dcb - Configure DCB hardware
4606 * @adapter: ixgbe adapter struct
4608 * This is called by the driver on open to configure the DCB hardware.
4609 * This is also called by the gennetlink interface when reconfiguring
4612 static void ixgbe_configure_dcb(struct ixgbe_adapter
*adapter
)
4614 struct ixgbe_hw
*hw
= &adapter
->hw
;
4615 int max_frame
= adapter
->netdev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
4617 if (!(adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
)) {
4618 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
4619 netif_set_gso_max_size(adapter
->netdev
, 65536);
4623 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
4624 netif_set_gso_max_size(adapter
->netdev
, 32768);
4627 if (adapter
->netdev
->features
& NETIF_F_FCOE_MTU
)
4628 max_frame
= max(max_frame
, IXGBE_FCOE_JUMBO_FRAME_SIZE
);
4631 /* reconfigure the hardware */
4632 if (adapter
->dcbx_cap
& DCB_CAP_DCBX_VER_CEE
) {
4633 ixgbe_dcb_calculate_tc_credits(hw
, &adapter
->dcb_cfg
, max_frame
,
4635 ixgbe_dcb_calculate_tc_credits(hw
, &adapter
->dcb_cfg
, max_frame
,
4637 ixgbe_dcb_hw_config(hw
, &adapter
->dcb_cfg
);
4638 } else if (adapter
->ixgbe_ieee_ets
&& adapter
->ixgbe_ieee_pfc
) {
4639 ixgbe_dcb_hw_ets(&adapter
->hw
,
4640 adapter
->ixgbe_ieee_ets
,
4642 ixgbe_dcb_hw_pfc_config(&adapter
->hw
,
4643 adapter
->ixgbe_ieee_pfc
->pfc_en
,
4644 adapter
->ixgbe_ieee_ets
->prio_tc
);
4647 /* Enable RSS Hash per TC */
4648 if (hw
->mac
.type
!= ixgbe_mac_82598EB
) {
4650 u16 rss_i
= adapter
->ring_feature
[RING_F_RSS
].indices
- 1;
4657 /* write msb to all 8 TCs in one write */
4658 IXGBE_WRITE_REG(hw
, IXGBE_RQTC
, msb
* 0x11111111);
4663 /* Additional bittime to account for IXGBE framing */
4664 #define IXGBE_ETH_FRAMING 20
4667 * ixgbe_hpbthresh - calculate high water mark for flow control
4669 * @adapter: board private structure to calculate for
4670 * @pb: packet buffer to calculate
4672 static int ixgbe_hpbthresh(struct ixgbe_adapter
*adapter
, int pb
)
4674 struct ixgbe_hw
*hw
= &adapter
->hw
;
4675 struct net_device
*dev
= adapter
->netdev
;
4676 int link
, tc
, kb
, marker
;
4679 /* Calculate max LAN frame size */
4680 tc
= link
= dev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
+ IXGBE_ETH_FRAMING
;
4683 /* FCoE traffic class uses FCOE jumbo frames */
4684 if ((dev
->features
& NETIF_F_FCOE_MTU
) &&
4685 (tc
< IXGBE_FCOE_JUMBO_FRAME_SIZE
) &&
4686 (pb
== ixgbe_fcoe_get_tc(adapter
)))
4687 tc
= IXGBE_FCOE_JUMBO_FRAME_SIZE
;
4690 /* Calculate delay value for device */
4691 switch (hw
->mac
.type
) {
4692 case ixgbe_mac_X540
:
4693 case ixgbe_mac_X550
:
4694 case ixgbe_mac_X550EM_x
:
4695 case ixgbe_mac_x550em_a
:
4696 dv_id
= IXGBE_DV_X540(link
, tc
);
4699 dv_id
= IXGBE_DV(link
, tc
);
4703 /* Loopback switch introduces additional latency */
4704 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
)
4705 dv_id
+= IXGBE_B2BT(tc
);
4707 /* Delay value is calculated in bit times convert to KB */
4708 kb
= IXGBE_BT2KB(dv_id
);
4709 rx_pba
= IXGBE_READ_REG(hw
, IXGBE_RXPBSIZE(pb
)) >> 10;
4711 marker
= rx_pba
- kb
;
4713 /* It is possible that the packet buffer is not large enough
4714 * to provide required headroom. In this case throw an error
4715 * to user and a do the best we can.
4718 e_warn(drv
, "Packet Buffer(%i) can not provide enough"
4719 "headroom to support flow control."
4720 "Decrease MTU or number of traffic classes\n", pb
);
4728 * ixgbe_lpbthresh - calculate low water mark for for flow control
4730 * @adapter: board private structure to calculate for
4731 * @pb: packet buffer to calculate
4733 static int ixgbe_lpbthresh(struct ixgbe_adapter
*adapter
, int pb
)
4735 struct ixgbe_hw
*hw
= &adapter
->hw
;
4736 struct net_device
*dev
= adapter
->netdev
;
4740 /* Calculate max LAN frame size */
4741 tc
= dev
->mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
4744 /* FCoE traffic class uses FCOE jumbo frames */
4745 if ((dev
->features
& NETIF_F_FCOE_MTU
) &&
4746 (tc
< IXGBE_FCOE_JUMBO_FRAME_SIZE
) &&
4747 (pb
== netdev_get_prio_tc_map(dev
, adapter
->fcoe
.up
)))
4748 tc
= IXGBE_FCOE_JUMBO_FRAME_SIZE
;
4751 /* Calculate delay value for device */
4752 switch (hw
->mac
.type
) {
4753 case ixgbe_mac_X540
:
4754 case ixgbe_mac_X550
:
4755 case ixgbe_mac_X550EM_x
:
4756 case ixgbe_mac_x550em_a
:
4757 dv_id
= IXGBE_LOW_DV_X540(tc
);
4760 dv_id
= IXGBE_LOW_DV(tc
);
4764 /* Delay value is calculated in bit times convert to KB */
4765 return IXGBE_BT2KB(dv_id
);
4769 * ixgbe_pbthresh_setup - calculate and setup high low water marks
4771 static void ixgbe_pbthresh_setup(struct ixgbe_adapter
*adapter
)
4773 struct ixgbe_hw
*hw
= &adapter
->hw
;
4774 int num_tc
= netdev_get_num_tc(adapter
->netdev
);
4780 for (i
= 0; i
< num_tc
; i
++) {
4781 hw
->fc
.high_water
[i
] = ixgbe_hpbthresh(adapter
, i
);
4782 hw
->fc
.low_water
[i
] = ixgbe_lpbthresh(adapter
, i
);
4784 /* Low water marks must not be larger than high water marks */
4785 if (hw
->fc
.low_water
[i
] > hw
->fc
.high_water
[i
])
4786 hw
->fc
.low_water
[i
] = 0;
4789 for (; i
< MAX_TRAFFIC_CLASS
; i
++)
4790 hw
->fc
.high_water
[i
] = 0;
4793 static void ixgbe_configure_pb(struct ixgbe_adapter
*adapter
)
4795 struct ixgbe_hw
*hw
= &adapter
->hw
;
4797 u8 tc
= netdev_get_num_tc(adapter
->netdev
);
4799 if (adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
||
4800 adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
)
4801 hdrm
= 32 << adapter
->fdir_pballoc
;
4805 hw
->mac
.ops
.set_rxpba(hw
, tc
, hdrm
, PBA_STRATEGY_EQUAL
);
4806 ixgbe_pbthresh_setup(adapter
);
4809 static void ixgbe_fdir_filter_restore(struct ixgbe_adapter
*adapter
)
4811 struct ixgbe_hw
*hw
= &adapter
->hw
;
4812 struct hlist_node
*node2
;
4813 struct ixgbe_fdir_filter
*filter
;
4815 spin_lock(&adapter
->fdir_perfect_lock
);
4817 if (!hlist_empty(&adapter
->fdir_filter_list
))
4818 ixgbe_fdir_set_input_mask_82599(hw
, &adapter
->fdir_mask
);
4820 hlist_for_each_entry_safe(filter
, node2
,
4821 &adapter
->fdir_filter_list
, fdir_node
) {
4822 ixgbe_fdir_write_perfect_filter_82599(hw
,
4825 (filter
->action
== IXGBE_FDIR_DROP_QUEUE
) ?
4826 IXGBE_FDIR_DROP_QUEUE
:
4827 adapter
->rx_ring
[filter
->action
]->reg_idx
);
4830 spin_unlock(&adapter
->fdir_perfect_lock
);
4833 static void ixgbe_macvlan_set_rx_mode(struct net_device
*dev
, unsigned int pool
,
4834 struct ixgbe_adapter
*adapter
)
4836 struct ixgbe_hw
*hw
= &adapter
->hw
;
4839 /* No unicast promiscuous support for VMDQ devices. */
4840 vmolr
= IXGBE_READ_REG(hw
, IXGBE_VMOLR(pool
));
4841 vmolr
|= (IXGBE_VMOLR_ROMPE
| IXGBE_VMOLR_BAM
| IXGBE_VMOLR_AUPE
);
4843 /* clear the affected bit */
4844 vmolr
&= ~IXGBE_VMOLR_MPE
;
4846 if (dev
->flags
& IFF_ALLMULTI
) {
4847 vmolr
|= IXGBE_VMOLR_MPE
;
4849 vmolr
|= IXGBE_VMOLR_ROMPE
;
4850 hw
->mac
.ops
.update_mc_addr_list(hw
, dev
);
4852 ixgbe_write_uc_addr_list(adapter
->netdev
, pool
);
4853 IXGBE_WRITE_REG(hw
, IXGBE_VMOLR(pool
), vmolr
);
4856 static void ixgbe_fwd_psrtype(struct ixgbe_fwd_adapter
*vadapter
)
4858 struct ixgbe_adapter
*adapter
= vadapter
->real_adapter
;
4859 int rss_i
= adapter
->num_rx_queues_per_pool
;
4860 struct ixgbe_hw
*hw
= &adapter
->hw
;
4861 u16 pool
= vadapter
->pool
;
4862 u32 psrtype
= IXGBE_PSRTYPE_TCPHDR
|
4863 IXGBE_PSRTYPE_UDPHDR
|
4864 IXGBE_PSRTYPE_IPV4HDR
|
4865 IXGBE_PSRTYPE_L2HDR
|
4866 IXGBE_PSRTYPE_IPV6HDR
;
4868 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
4872 psrtype
|= 2u << 29;
4874 psrtype
|= 1u << 29;
4876 IXGBE_WRITE_REG(hw
, IXGBE_PSRTYPE(VMDQ_P(pool
)), psrtype
);
4880 * ixgbe_clean_rx_ring - Free Rx Buffers per Queue
4881 * @rx_ring: ring to free buffers from
4883 static void ixgbe_clean_rx_ring(struct ixgbe_ring
*rx_ring
)
4885 struct device
*dev
= rx_ring
->dev
;
4889 /* ring already cleared, nothing to do */
4890 if (!rx_ring
->rx_buffer_info
)
4893 /* Free all the Rx ring sk_buffs */
4894 for (i
= 0; i
< rx_ring
->count
; i
++) {
4895 struct ixgbe_rx_buffer
*rx_buffer
= &rx_ring
->rx_buffer_info
[i
];
4897 if (rx_buffer
->skb
) {
4898 struct sk_buff
*skb
= rx_buffer
->skb
;
4899 if (IXGBE_CB(skb
)->page_released
)
4902 ixgbe_rx_bufsz(rx_ring
),
4905 rx_buffer
->skb
= NULL
;
4908 if (!rx_buffer
->page
)
4911 dma_unmap_page(dev
, rx_buffer
->dma
,
4912 ixgbe_rx_pg_size(rx_ring
), DMA_FROM_DEVICE
);
4913 __free_pages(rx_buffer
->page
, ixgbe_rx_pg_order(rx_ring
));
4915 rx_buffer
->page
= NULL
;
4918 size
= sizeof(struct ixgbe_rx_buffer
) * rx_ring
->count
;
4919 memset(rx_ring
->rx_buffer_info
, 0, size
);
4921 /* Zero out the descriptor ring */
4922 memset(rx_ring
->desc
, 0, rx_ring
->size
);
4924 rx_ring
->next_to_alloc
= 0;
4925 rx_ring
->next_to_clean
= 0;
4926 rx_ring
->next_to_use
= 0;
4929 static void ixgbe_disable_fwd_ring(struct ixgbe_fwd_adapter
*vadapter
,
4930 struct ixgbe_ring
*rx_ring
)
4932 struct ixgbe_adapter
*adapter
= vadapter
->real_adapter
;
4933 int index
= rx_ring
->queue_index
+ vadapter
->rx_base_queue
;
4935 /* shutdown specific queue receive and wait for dma to settle */
4936 ixgbe_disable_rx_queue(adapter
, rx_ring
);
4937 usleep_range(10000, 20000);
4938 ixgbe_irq_disable_queues(adapter
, BIT_ULL(index
));
4939 ixgbe_clean_rx_ring(rx_ring
);
4940 rx_ring
->l2_accel_priv
= NULL
;
4943 static int ixgbe_fwd_ring_down(struct net_device
*vdev
,
4944 struct ixgbe_fwd_adapter
*accel
)
4946 struct ixgbe_adapter
*adapter
= accel
->real_adapter
;
4947 unsigned int rxbase
= accel
->rx_base_queue
;
4948 unsigned int txbase
= accel
->tx_base_queue
;
4951 netif_tx_stop_all_queues(vdev
);
4953 for (i
= 0; i
< adapter
->num_rx_queues_per_pool
; i
++) {
4954 ixgbe_disable_fwd_ring(accel
, adapter
->rx_ring
[rxbase
+ i
]);
4955 adapter
->rx_ring
[rxbase
+ i
]->netdev
= adapter
->netdev
;
4958 for (i
= 0; i
< adapter
->num_rx_queues_per_pool
; i
++) {
4959 adapter
->tx_ring
[txbase
+ i
]->l2_accel_priv
= NULL
;
4960 adapter
->tx_ring
[txbase
+ i
]->netdev
= adapter
->netdev
;
4967 static int ixgbe_fwd_ring_up(struct net_device
*vdev
,
4968 struct ixgbe_fwd_adapter
*accel
)
4970 struct ixgbe_adapter
*adapter
= accel
->real_adapter
;
4971 unsigned int rxbase
, txbase
, queues
;
4972 int i
, baseq
, err
= 0;
4974 if (!test_bit(accel
->pool
, &adapter
->fwd_bitmask
))
4977 baseq
= accel
->pool
* adapter
->num_rx_queues_per_pool
;
4978 netdev_dbg(vdev
, "pool %i:%i queues %i:%i VSI bitmask %lx\n",
4979 accel
->pool
, adapter
->num_rx_pools
,
4980 baseq
, baseq
+ adapter
->num_rx_queues_per_pool
,
4981 adapter
->fwd_bitmask
);
4983 accel
->netdev
= vdev
;
4984 accel
->rx_base_queue
= rxbase
= baseq
;
4985 accel
->tx_base_queue
= txbase
= baseq
;
4987 for (i
= 0; i
< adapter
->num_rx_queues_per_pool
; i
++)
4988 ixgbe_disable_fwd_ring(accel
, adapter
->rx_ring
[rxbase
+ i
]);
4990 for (i
= 0; i
< adapter
->num_rx_queues_per_pool
; i
++) {
4991 adapter
->rx_ring
[rxbase
+ i
]->netdev
= vdev
;
4992 adapter
->rx_ring
[rxbase
+ i
]->l2_accel_priv
= accel
;
4993 ixgbe_configure_rx_ring(adapter
, adapter
->rx_ring
[rxbase
+ i
]);
4996 for (i
= 0; i
< adapter
->num_rx_queues_per_pool
; i
++) {
4997 adapter
->tx_ring
[txbase
+ i
]->netdev
= vdev
;
4998 adapter
->tx_ring
[txbase
+ i
]->l2_accel_priv
= accel
;
5001 queues
= min_t(unsigned int,
5002 adapter
->num_rx_queues_per_pool
, vdev
->num_tx_queues
);
5003 err
= netif_set_real_num_tx_queues(vdev
, queues
);
5007 err
= netif_set_real_num_rx_queues(vdev
, queues
);
5011 if (is_valid_ether_addr(vdev
->dev_addr
))
5012 ixgbe_add_mac_filter(adapter
, vdev
->dev_addr
, accel
->pool
);
5014 ixgbe_fwd_psrtype(accel
);
5015 ixgbe_macvlan_set_rx_mode(vdev
, accel
->pool
, adapter
);
5018 ixgbe_fwd_ring_down(vdev
, accel
);
5022 static void ixgbe_configure_dfwd(struct ixgbe_adapter
*adapter
)
5024 struct net_device
*upper
;
5025 struct list_head
*iter
;
5028 netdev_for_each_all_upper_dev_rcu(adapter
->netdev
, upper
, iter
) {
5029 if (netif_is_macvlan(upper
)) {
5030 struct macvlan_dev
*dfwd
= netdev_priv(upper
);
5031 struct ixgbe_fwd_adapter
*vadapter
= dfwd
->fwd_priv
;
5033 if (dfwd
->fwd_priv
) {
5034 err
= ixgbe_fwd_ring_up(upper
, vadapter
);
5042 static void ixgbe_configure(struct ixgbe_adapter
*adapter
)
5044 struct ixgbe_hw
*hw
= &adapter
->hw
;
5046 ixgbe_configure_pb(adapter
);
5047 #ifdef CONFIG_IXGBE_DCB
5048 ixgbe_configure_dcb(adapter
);
5051 * We must restore virtualization before VLANs or else
5052 * the VLVF registers will not be populated
5054 ixgbe_configure_virtualization(adapter
);
5056 ixgbe_set_rx_mode(adapter
->netdev
);
5057 ixgbe_restore_vlan(adapter
);
5059 switch (hw
->mac
.type
) {
5060 case ixgbe_mac_82599EB
:
5061 case ixgbe_mac_X540
:
5062 hw
->mac
.ops
.disable_rx_buff(hw
);
5068 if (adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
) {
5069 ixgbe_init_fdir_signature_82599(&adapter
->hw
,
5070 adapter
->fdir_pballoc
);
5071 } else if (adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
) {
5072 ixgbe_init_fdir_perfect_82599(&adapter
->hw
,
5073 adapter
->fdir_pballoc
);
5074 ixgbe_fdir_filter_restore(adapter
);
5077 switch (hw
->mac
.type
) {
5078 case ixgbe_mac_82599EB
:
5079 case ixgbe_mac_X540
:
5080 hw
->mac
.ops
.enable_rx_buff(hw
);
5086 #ifdef CONFIG_IXGBE_DCA
5088 if (adapter
->flags
& IXGBE_FLAG_DCA_CAPABLE
)
5089 ixgbe_setup_dca(adapter
);
5090 #endif /* CONFIG_IXGBE_DCA */
5093 /* configure FCoE L2 filters, redirection table, and Rx control */
5094 ixgbe_configure_fcoe(adapter
);
5096 #endif /* IXGBE_FCOE */
5097 ixgbe_configure_tx(adapter
);
5098 ixgbe_configure_rx(adapter
);
5099 ixgbe_configure_dfwd(adapter
);
5103 * ixgbe_sfp_link_config - set up SFP+ link
5104 * @adapter: pointer to private adapter struct
5106 static void ixgbe_sfp_link_config(struct ixgbe_adapter
*adapter
)
5109 * We are assuming the worst case scenario here, and that
5110 * is that an SFP was inserted/removed after the reset
5111 * but before SFP detection was enabled. As such the best
5112 * solution is to just start searching as soon as we start
5114 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
)
5115 adapter
->flags2
|= IXGBE_FLAG2_SEARCH_FOR_SFP
;
5117 adapter
->flags2
|= IXGBE_FLAG2_SFP_NEEDS_RESET
;
5118 adapter
->sfp_poll_time
= 0;
5122 * ixgbe_non_sfp_link_config - set up non-SFP+ link
5123 * @hw: pointer to private hardware struct
5125 * Returns 0 on success, negative on failure
5127 static int ixgbe_non_sfp_link_config(struct ixgbe_hw
*hw
)
5130 bool autoneg
, link_up
= false;
5131 int ret
= IXGBE_ERR_LINK_SETUP
;
5133 if (hw
->mac
.ops
.check_link
)
5134 ret
= hw
->mac
.ops
.check_link(hw
, &speed
, &link_up
, false);
5139 speed
= hw
->phy
.autoneg_advertised
;
5140 if ((!speed
) && (hw
->mac
.ops
.get_link_capabilities
))
5141 ret
= hw
->mac
.ops
.get_link_capabilities(hw
, &speed
,
5146 if (hw
->mac
.ops
.setup_link
)
5147 ret
= hw
->mac
.ops
.setup_link(hw
, speed
, link_up
);
5152 static void ixgbe_setup_gpie(struct ixgbe_adapter
*adapter
)
5154 struct ixgbe_hw
*hw
= &adapter
->hw
;
5157 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
) {
5158 gpie
= IXGBE_GPIE_MSIX_MODE
| IXGBE_GPIE_PBA_SUPPORT
|
5160 gpie
|= IXGBE_GPIE_EIAME
;
5162 * use EIAM to auto-mask when MSI-X interrupt is asserted
5163 * this saves a register write for every interrupt
5165 switch (hw
->mac
.type
) {
5166 case ixgbe_mac_82598EB
:
5167 IXGBE_WRITE_REG(hw
, IXGBE_EIAM
, IXGBE_EICS_RTX_QUEUE
);
5169 case ixgbe_mac_82599EB
:
5170 case ixgbe_mac_X540
:
5171 case ixgbe_mac_X550
:
5172 case ixgbe_mac_X550EM_x
:
5173 case ixgbe_mac_x550em_a
:
5175 IXGBE_WRITE_REG(hw
, IXGBE_EIAM_EX(0), 0xFFFFFFFF);
5176 IXGBE_WRITE_REG(hw
, IXGBE_EIAM_EX(1), 0xFFFFFFFF);
5180 /* legacy interrupts, use EIAM to auto-mask when reading EICR,
5181 * specifically only auto mask tx and rx interrupts */
5182 IXGBE_WRITE_REG(hw
, IXGBE_EIAM
, IXGBE_EICS_RTX_QUEUE
);
5185 /* XXX: to interrupt immediately for EICS writes, enable this */
5186 /* gpie |= IXGBE_GPIE_EIMEN; */
5188 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
) {
5189 gpie
&= ~IXGBE_GPIE_VTMODE_MASK
;
5191 switch (adapter
->ring_feature
[RING_F_VMDQ
].mask
) {
5192 case IXGBE_82599_VMDQ_8Q_MASK
:
5193 gpie
|= IXGBE_GPIE_VTMODE_16
;
5195 case IXGBE_82599_VMDQ_4Q_MASK
:
5196 gpie
|= IXGBE_GPIE_VTMODE_32
;
5199 gpie
|= IXGBE_GPIE_VTMODE_64
;
5204 /* Enable Thermal over heat sensor interrupt */
5205 if (adapter
->flags2
& IXGBE_FLAG2_TEMP_SENSOR_CAPABLE
) {
5206 switch (adapter
->hw
.mac
.type
) {
5207 case ixgbe_mac_82599EB
:
5208 gpie
|= IXGBE_SDP0_GPIEN_8259X
;
5215 /* Enable fan failure interrupt */
5216 if (adapter
->flags
& IXGBE_FLAG_FAN_FAIL_CAPABLE
)
5217 gpie
|= IXGBE_SDP1_GPIEN(hw
);
5219 switch (hw
->mac
.type
) {
5220 case ixgbe_mac_82599EB
:
5221 gpie
|= IXGBE_SDP1_GPIEN_8259X
| IXGBE_SDP2_GPIEN_8259X
;
5223 case ixgbe_mac_X550EM_x
:
5224 case ixgbe_mac_x550em_a
:
5225 gpie
|= IXGBE_SDP0_GPIEN_X540
;
5231 IXGBE_WRITE_REG(hw
, IXGBE_GPIE
, gpie
);
5234 static void ixgbe_up_complete(struct ixgbe_adapter
*adapter
)
5236 struct ixgbe_hw
*hw
= &adapter
->hw
;
5240 ixgbe_get_hw_control(adapter
);
5241 ixgbe_setup_gpie(adapter
);
5243 if (adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
)
5244 ixgbe_configure_msix(adapter
);
5246 ixgbe_configure_msi_and_legacy(adapter
);
5248 /* enable the optics for 82599 SFP+ fiber */
5249 if (hw
->mac
.ops
.enable_tx_laser
)
5250 hw
->mac
.ops
.enable_tx_laser(hw
);
5252 if (hw
->phy
.ops
.set_phy_power
)
5253 hw
->phy
.ops
.set_phy_power(hw
, true);
5255 smp_mb__before_atomic();
5256 clear_bit(__IXGBE_DOWN
, &adapter
->state
);
5257 ixgbe_napi_enable_all(adapter
);
5259 if (ixgbe_is_sfp(hw
)) {
5260 ixgbe_sfp_link_config(adapter
);
5262 err
= ixgbe_non_sfp_link_config(hw
);
5264 e_err(probe
, "link_config FAILED %d\n", err
);
5267 /* clear any pending interrupts, may auto mask */
5268 IXGBE_READ_REG(hw
, IXGBE_EICR
);
5269 ixgbe_irq_enable(adapter
, true, true);
5272 * If this adapter has a fan, check to see if we had a failure
5273 * before we enabled the interrupt.
5275 if (adapter
->flags
& IXGBE_FLAG_FAN_FAIL_CAPABLE
) {
5276 u32 esdp
= IXGBE_READ_REG(hw
, IXGBE_ESDP
);
5277 if (esdp
& IXGBE_ESDP_SDP1
)
5278 e_crit(drv
, "Fan has stopped, replace the adapter\n");
5281 /* bring the link up in the watchdog, this could race with our first
5282 * link up interrupt but shouldn't be a problem */
5283 adapter
->flags
|= IXGBE_FLAG_NEED_LINK_UPDATE
;
5284 adapter
->link_check_timeout
= jiffies
;
5285 mod_timer(&adapter
->service_timer
, jiffies
);
5287 /* Set PF Reset Done bit so PF/VF Mail Ops can work */
5288 ctrl_ext
= IXGBE_READ_REG(hw
, IXGBE_CTRL_EXT
);
5289 ctrl_ext
|= IXGBE_CTRL_EXT_PFRSTD
;
5290 IXGBE_WRITE_REG(hw
, IXGBE_CTRL_EXT
, ctrl_ext
);
5293 void ixgbe_reinit_locked(struct ixgbe_adapter
*adapter
)
5295 WARN_ON(in_interrupt());
5296 /* put off any impending NetWatchDogTimeout */
5297 netif_trans_update(adapter
->netdev
);
5299 while (test_and_set_bit(__IXGBE_RESETTING
, &adapter
->state
))
5300 usleep_range(1000, 2000);
5301 ixgbe_down(adapter
);
5303 * If SR-IOV enabled then wait a bit before bringing the adapter
5304 * back up to give the VFs time to respond to the reset. The
5305 * two second wait is based upon the watchdog timer cycle in
5308 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
)
5311 clear_bit(__IXGBE_RESETTING
, &adapter
->state
);
5314 void ixgbe_up(struct ixgbe_adapter
*adapter
)
5316 /* hardware has been reset, we need to reload some things */
5317 ixgbe_configure(adapter
);
5319 ixgbe_up_complete(adapter
);
5322 void ixgbe_reset(struct ixgbe_adapter
*adapter
)
5324 struct ixgbe_hw
*hw
= &adapter
->hw
;
5325 struct net_device
*netdev
= adapter
->netdev
;
5328 if (ixgbe_removed(hw
->hw_addr
))
5330 /* lock SFP init bit to prevent race conditions with the watchdog */
5331 while (test_and_set_bit(__IXGBE_IN_SFP_INIT
, &adapter
->state
))
5332 usleep_range(1000, 2000);
5334 /* clear all SFP and link config related flags while holding SFP_INIT */
5335 adapter
->flags2
&= ~(IXGBE_FLAG2_SEARCH_FOR_SFP
|
5336 IXGBE_FLAG2_SFP_NEEDS_RESET
);
5337 adapter
->flags
&= ~IXGBE_FLAG_NEED_LINK_CONFIG
;
5339 err
= hw
->mac
.ops
.init_hw(hw
);
5342 case IXGBE_ERR_SFP_NOT_PRESENT
:
5343 case IXGBE_ERR_SFP_NOT_SUPPORTED
:
5345 case IXGBE_ERR_MASTER_REQUESTS_PENDING
:
5346 e_dev_err("master disable timed out\n");
5348 case IXGBE_ERR_EEPROM_VERSION
:
5349 /* We are running on a pre-production device, log a warning */
5350 e_dev_warn("This device is a pre-production adapter/LOM. "
5351 "Please be aware there may be issues associated with "
5352 "your hardware. If you are experiencing problems "
5353 "please contact your Intel or hardware "
5354 "representative who provided you with this "
5358 e_dev_err("Hardware Error: %d\n", err
);
5361 clear_bit(__IXGBE_IN_SFP_INIT
, &adapter
->state
);
5363 /* flush entries out of MAC table */
5364 ixgbe_flush_sw_mac_table(adapter
);
5365 __dev_uc_unsync(netdev
, NULL
);
5367 /* do not flush user set addresses */
5368 ixgbe_mac_set_default_filter(adapter
);
5370 /* update SAN MAC vmdq pool selection */
5371 if (hw
->mac
.san_mac_rar_index
)
5372 hw
->mac
.ops
.set_vmdq_san_mac(hw
, VMDQ_P(0));
5374 if (test_bit(__IXGBE_PTP_RUNNING
, &adapter
->state
))
5375 ixgbe_ptp_reset(adapter
);
5377 if (hw
->phy
.ops
.set_phy_power
) {
5378 if (!netif_running(adapter
->netdev
) && !adapter
->wol
)
5379 hw
->phy
.ops
.set_phy_power(hw
, false);
5381 hw
->phy
.ops
.set_phy_power(hw
, true);
5386 * ixgbe_clean_tx_ring - Free Tx Buffers
5387 * @tx_ring: ring to be cleaned
5389 static void ixgbe_clean_tx_ring(struct ixgbe_ring
*tx_ring
)
5391 struct ixgbe_tx_buffer
*tx_buffer_info
;
5395 /* ring already cleared, nothing to do */
5396 if (!tx_ring
->tx_buffer_info
)
5399 /* Free all the Tx ring sk_buffs */
5400 for (i
= 0; i
< tx_ring
->count
; i
++) {
5401 tx_buffer_info
= &tx_ring
->tx_buffer_info
[i
];
5402 ixgbe_unmap_and_free_tx_resource(tx_ring
, tx_buffer_info
);
5405 netdev_tx_reset_queue(txring_txq(tx_ring
));
5407 size
= sizeof(struct ixgbe_tx_buffer
) * tx_ring
->count
;
5408 memset(tx_ring
->tx_buffer_info
, 0, size
);
5410 /* Zero out the descriptor ring */
5411 memset(tx_ring
->desc
, 0, tx_ring
->size
);
5413 tx_ring
->next_to_use
= 0;
5414 tx_ring
->next_to_clean
= 0;
5418 * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues
5419 * @adapter: board private structure
5421 static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter
*adapter
)
5425 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
5426 ixgbe_clean_rx_ring(adapter
->rx_ring
[i
]);
5430 * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues
5431 * @adapter: board private structure
5433 static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter
*adapter
)
5437 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
5438 ixgbe_clean_tx_ring(adapter
->tx_ring
[i
]);
5441 static void ixgbe_fdir_filter_exit(struct ixgbe_adapter
*adapter
)
5443 struct hlist_node
*node2
;
5444 struct ixgbe_fdir_filter
*filter
;
5446 spin_lock(&adapter
->fdir_perfect_lock
);
5448 hlist_for_each_entry_safe(filter
, node2
,
5449 &adapter
->fdir_filter_list
, fdir_node
) {
5450 hlist_del(&filter
->fdir_node
);
5453 adapter
->fdir_filter_count
= 0;
5455 spin_unlock(&adapter
->fdir_perfect_lock
);
5458 void ixgbe_down(struct ixgbe_adapter
*adapter
)
5460 struct net_device
*netdev
= adapter
->netdev
;
5461 struct ixgbe_hw
*hw
= &adapter
->hw
;
5462 struct net_device
*upper
;
5463 struct list_head
*iter
;
5466 /* signal that we are down to the interrupt handler */
5467 if (test_and_set_bit(__IXGBE_DOWN
, &adapter
->state
))
5468 return; /* do nothing if already down */
5470 /* disable receives */
5471 hw
->mac
.ops
.disable_rx(hw
);
5473 /* disable all enabled rx queues */
5474 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
5475 /* this call also flushes the previous write */
5476 ixgbe_disable_rx_queue(adapter
, adapter
->rx_ring
[i
]);
5478 usleep_range(10000, 20000);
5480 netif_tx_stop_all_queues(netdev
);
5482 /* call carrier off first to avoid false dev_watchdog timeouts */
5483 netif_carrier_off(netdev
);
5484 netif_tx_disable(netdev
);
5486 /* disable any upper devices */
5487 netdev_for_each_all_upper_dev_rcu(adapter
->netdev
, upper
, iter
) {
5488 if (netif_is_macvlan(upper
)) {
5489 struct macvlan_dev
*vlan
= netdev_priv(upper
);
5491 if (vlan
->fwd_priv
) {
5492 netif_tx_stop_all_queues(upper
);
5493 netif_carrier_off(upper
);
5494 netif_tx_disable(upper
);
5499 ixgbe_irq_disable(adapter
);
5501 ixgbe_napi_disable_all(adapter
);
5503 adapter
->flags2
&= ~(IXGBE_FLAG2_FDIR_REQUIRES_REINIT
|
5504 IXGBE_FLAG2_RESET_REQUESTED
);
5505 adapter
->flags
&= ~IXGBE_FLAG_NEED_LINK_UPDATE
;
5507 del_timer_sync(&adapter
->service_timer
);
5509 if (adapter
->num_vfs
) {
5510 /* Clear EITR Select mapping */
5511 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_EITRSEL
, 0);
5513 /* Mark all the VFs as inactive */
5514 for (i
= 0 ; i
< adapter
->num_vfs
; i
++)
5515 adapter
->vfinfo
[i
].clear_to_send
= false;
5517 /* ping all the active vfs to let them know we are going down */
5518 ixgbe_ping_all_vfs(adapter
);
5520 /* Disable all VFTE/VFRE TX/RX */
5521 ixgbe_disable_tx_rx(adapter
);
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
);
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
));
5545 if (!pci_channel_offline(adapter
->pdev
))
5546 ixgbe_reset(adapter
);
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
);
5552 ixgbe_clean_all_tx_rings(adapter
);
5553 ixgbe_clean_all_rx_rings(adapter
);
5557 * ixgbe_tx_timeout - Respond to a Tx Hang
5558 * @netdev: network interface device structure
5560 static void ixgbe_tx_timeout(struct net_device
*netdev
)
5562 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
5564 /* Do the reset outside of interrupt context */
5565 ixgbe_tx_timeout_reset(adapter
);
5568 #ifdef CONFIG_IXGBE_DCB
5569 static void ixgbe_init_dcb(struct ixgbe_adapter
*adapter
)
5571 struct ixgbe_hw
*hw
= &adapter
->hw
;
5572 struct tc_configuration
*tc
;
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
;
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
;
5586 case ixgbe_mac_X550EM_x
:
5587 case ixgbe_mac_x550em_a
:
5589 adapter
->dcb_cfg
.num_tcs
.pg_tcs
= DEF_TRAFFIC_CLASS
;
5590 adapter
->dcb_cfg
.num_tcs
.pfc_tcs
= DEF_TRAFFIC_CLASS
;
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
;
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;
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
));
5621 * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter)
5622 * @adapter: board private structure to initialize
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).
5628 static int ixgbe_sw_init(struct ixgbe_adapter
*adapter
)
5630 struct ixgbe_hw
*hw
= &adapter
->hw
;
5631 struct pci_dev
*pdev
= adapter
->pdev
;
5632 unsigned int rss
, fdir
;
5636 /* PCI config space info */
5638 hw
->vendor_id
= pdev
->vendor
;
5639 hw
->device_id
= pdev
->device
;
5640 hw
->revision_id
= pdev
->revision
;
5641 hw
->subsystem_vendor_id
= pdev
->subsystem_vendor
;
5642 hw
->subsystem_device_id
= pdev
->subsystem_device
;
5644 /* Set common capability flags and settings */
5645 rss
= min_t(int, ixgbe_max_rss_indices(adapter
), num_online_cpus());
5646 adapter
->ring_feature
[RING_F_RSS
].limit
= rss
;
5647 adapter
->flags2
|= IXGBE_FLAG2_RSC_CAPABLE
;
5648 adapter
->max_q_vectors
= MAX_Q_VECTORS_82599
;
5649 adapter
->atr_sample_rate
= 20;
5650 fdir
= min_t(int, IXGBE_MAX_FDIR_INDICES
, num_online_cpus());
5651 adapter
->ring_feature
[RING_F_FDIR
].limit
= fdir
;
5652 adapter
->fdir_pballoc
= IXGBE_FDIR_PBALLOC_64K
;
5653 #ifdef CONFIG_IXGBE_DCA
5654 adapter
->flags
|= IXGBE_FLAG_DCA_CAPABLE
;
5656 #ifdef CONFIG_IXGBE_DCB
5657 adapter
->flags
|= IXGBE_FLAG_DCB_CAPABLE
;
5658 adapter
->flags
&= ~IXGBE_FLAG_DCB_ENABLED
;
5661 adapter
->flags
|= IXGBE_FLAG_FCOE_CAPABLE
;
5662 adapter
->flags
&= ~IXGBE_FLAG_FCOE_ENABLED
;
5663 #ifdef CONFIG_IXGBE_DCB
5664 /* Default traffic class to use for FCoE */
5665 adapter
->fcoe
.up
= IXGBE_FCOE_DEFTC
;
5666 #endif /* CONFIG_IXGBE_DCB */
5667 #endif /* IXGBE_FCOE */
5669 /* initialize static ixgbe jump table entries */
5670 adapter
->jump_tables
[0] = kzalloc(sizeof(*adapter
->jump_tables
[0]),
5672 if (!adapter
->jump_tables
[0])
5674 adapter
->jump_tables
[0]->mat
= ixgbe_ipv4_fields
;
5676 for (i
= 1; i
< IXGBE_MAX_LINK_HANDLE
; i
++)
5677 adapter
->jump_tables
[i
] = NULL
;
5679 adapter
->mac_table
= kzalloc(sizeof(struct ixgbe_mac_addr
) *
5680 hw
->mac
.num_rar_entries
,
5682 if (!adapter
->mac_table
)
5685 /* Set MAC specific capability flags and exceptions */
5686 switch (hw
->mac
.type
) {
5687 case ixgbe_mac_82598EB
:
5688 adapter
->flags2
&= ~IXGBE_FLAG2_RSC_CAPABLE
;
5690 if (hw
->device_id
== IXGBE_DEV_ID_82598AT
)
5691 adapter
->flags
|= IXGBE_FLAG_FAN_FAIL_CAPABLE
;
5693 adapter
->max_q_vectors
= MAX_Q_VECTORS_82598
;
5694 adapter
->ring_feature
[RING_F_FDIR
].limit
= 0;
5695 adapter
->atr_sample_rate
= 0;
5696 adapter
->fdir_pballoc
= 0;
5698 adapter
->flags
&= ~IXGBE_FLAG_FCOE_CAPABLE
;
5699 adapter
->flags
&= ~IXGBE_FLAG_FCOE_ENABLED
;
5700 #ifdef CONFIG_IXGBE_DCB
5701 adapter
->fcoe
.up
= 0;
5702 #endif /* IXGBE_DCB */
5703 #endif /* IXGBE_FCOE */
5705 case ixgbe_mac_82599EB
:
5706 if (hw
->device_id
== IXGBE_DEV_ID_82599_T3_LOM
)
5707 adapter
->flags2
|= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE
;
5709 case ixgbe_mac_X540
:
5710 fwsm
= IXGBE_READ_REG(hw
, IXGBE_FWSM(hw
));
5711 if (fwsm
& IXGBE_FWSM_TS_ENABLED
)
5712 adapter
->flags2
|= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE
;
5714 case ixgbe_mac_X550EM_x
:
5715 case ixgbe_mac_x550em_a
:
5716 #ifdef CONFIG_IXGBE_DCB
5717 adapter
->flags
&= ~IXGBE_FLAG_DCB_CAPABLE
;
5720 adapter
->flags
&= ~IXGBE_FLAG_FCOE_CAPABLE
;
5721 #ifdef CONFIG_IXGBE_DCB
5722 adapter
->fcoe
.up
= 0;
5723 #endif /* IXGBE_DCB */
5724 #endif /* IXGBE_FCOE */
5726 case ixgbe_mac_X550
:
5727 #ifdef CONFIG_IXGBE_DCA
5728 adapter
->flags
&= ~IXGBE_FLAG_DCA_CAPABLE
;
5730 adapter
->flags
|= IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE
;
5737 /* FCoE support exists, always init the FCoE lock */
5738 spin_lock_init(&adapter
->fcoe
.lock
);
5741 /* n-tuple support exists, always init our spinlock */
5742 spin_lock_init(&adapter
->fdir_perfect_lock
);
5744 #ifdef CONFIG_IXGBE_DCB
5745 ixgbe_init_dcb(adapter
);
5748 /* default flow control settings */
5749 hw
->fc
.requested_mode
= ixgbe_fc_full
;
5750 hw
->fc
.current_mode
= ixgbe_fc_full
; /* init for ethtool output */
5751 ixgbe_pbthresh_setup(adapter
);
5752 hw
->fc
.pause_time
= IXGBE_DEFAULT_FCPAUSE
;
5753 hw
->fc
.send_xon
= true;
5754 hw
->fc
.disable_fc_autoneg
= ixgbe_device_supports_autoneg_fc(hw
);
5756 #ifdef CONFIG_PCI_IOV
5758 e_dev_warn("Enabling SR-IOV VFs using the max_vfs module parameter is deprecated - please use the pci sysfs interface instead.\n");
5760 /* assign number of SR-IOV VFs */
5761 if (hw
->mac
.type
!= ixgbe_mac_82598EB
) {
5762 if (max_vfs
> IXGBE_MAX_VFS_DRV_LIMIT
) {
5763 adapter
->num_vfs
= 0;
5764 e_dev_warn("max_vfs parameter out of range. Not assigning any SR-IOV VFs\n");
5766 adapter
->num_vfs
= max_vfs
;
5769 #endif /* CONFIG_PCI_IOV */
5771 /* enable itr by default in dynamic mode */
5772 adapter
->rx_itr_setting
= 1;
5773 adapter
->tx_itr_setting
= 1;
5775 /* set default ring sizes */
5776 adapter
->tx_ring_count
= IXGBE_DEFAULT_TXD
;
5777 adapter
->rx_ring_count
= IXGBE_DEFAULT_RXD
;
5779 /* set default work limits */
5780 adapter
->tx_work_limit
= IXGBE_DEFAULT_TX_WORK
;
5782 /* initialize eeprom parameters */
5783 if (ixgbe_init_eeprom_params_generic(hw
)) {
5784 e_dev_err("EEPROM initialization failed\n");
5788 /* PF holds first pool slot */
5789 set_bit(0, &adapter
->fwd_bitmask
);
5790 set_bit(__IXGBE_DOWN
, &adapter
->state
);
5796 * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors)
5797 * @tx_ring: tx descriptor ring (for a specific queue) to setup
5799 * Return 0 on success, negative on failure
5801 int ixgbe_setup_tx_resources(struct ixgbe_ring
*tx_ring
)
5803 struct device
*dev
= tx_ring
->dev
;
5804 int orig_node
= dev_to_node(dev
);
5808 size
= sizeof(struct ixgbe_tx_buffer
) * tx_ring
->count
;
5810 if (tx_ring
->q_vector
)
5811 ring_node
= tx_ring
->q_vector
->numa_node
;
5813 tx_ring
->tx_buffer_info
= vzalloc_node(size
, ring_node
);
5814 if (!tx_ring
->tx_buffer_info
)
5815 tx_ring
->tx_buffer_info
= vzalloc(size
);
5816 if (!tx_ring
->tx_buffer_info
)
5819 u64_stats_init(&tx_ring
->syncp
);
5821 /* round up to nearest 4K */
5822 tx_ring
->size
= tx_ring
->count
* sizeof(union ixgbe_adv_tx_desc
);
5823 tx_ring
->size
= ALIGN(tx_ring
->size
, 4096);
5825 set_dev_node(dev
, ring_node
);
5826 tx_ring
->desc
= dma_alloc_coherent(dev
,
5830 set_dev_node(dev
, orig_node
);
5832 tx_ring
->desc
= dma_alloc_coherent(dev
, tx_ring
->size
,
5833 &tx_ring
->dma
, GFP_KERNEL
);
5837 tx_ring
->next_to_use
= 0;
5838 tx_ring
->next_to_clean
= 0;
5842 vfree(tx_ring
->tx_buffer_info
);
5843 tx_ring
->tx_buffer_info
= NULL
;
5844 dev_err(dev
, "Unable to allocate memory for the Tx descriptor ring\n");
5849 * ixgbe_setup_all_tx_resources - allocate all queues Tx resources
5850 * @adapter: board private structure
5852 * If this function returns with an error, then it's possible one or
5853 * more of the rings is populated (while the rest are not). It is the
5854 * callers duty to clean those orphaned rings.
5856 * Return 0 on success, negative on failure
5858 static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter
*adapter
)
5862 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
5863 err
= ixgbe_setup_tx_resources(adapter
->tx_ring
[i
]);
5867 e_err(probe
, "Allocation for Tx Queue %u failed\n", i
);
5873 /* rewind the index freeing the rings as we go */
5875 ixgbe_free_tx_resources(adapter
->tx_ring
[i
]);
5880 * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors)
5881 * @rx_ring: rx descriptor ring (for a specific queue) to setup
5883 * Returns 0 on success, negative on failure
5885 int ixgbe_setup_rx_resources(struct ixgbe_ring
*rx_ring
)
5887 struct device
*dev
= rx_ring
->dev
;
5888 int orig_node
= dev_to_node(dev
);
5892 size
= sizeof(struct ixgbe_rx_buffer
) * rx_ring
->count
;
5894 if (rx_ring
->q_vector
)
5895 ring_node
= rx_ring
->q_vector
->numa_node
;
5897 rx_ring
->rx_buffer_info
= vzalloc_node(size
, ring_node
);
5898 if (!rx_ring
->rx_buffer_info
)
5899 rx_ring
->rx_buffer_info
= vzalloc(size
);
5900 if (!rx_ring
->rx_buffer_info
)
5903 u64_stats_init(&rx_ring
->syncp
);
5905 /* Round up to nearest 4K */
5906 rx_ring
->size
= rx_ring
->count
* sizeof(union ixgbe_adv_rx_desc
);
5907 rx_ring
->size
= ALIGN(rx_ring
->size
, 4096);
5909 set_dev_node(dev
, ring_node
);
5910 rx_ring
->desc
= dma_alloc_coherent(dev
,
5914 set_dev_node(dev
, orig_node
);
5916 rx_ring
->desc
= dma_alloc_coherent(dev
, rx_ring
->size
,
5917 &rx_ring
->dma
, GFP_KERNEL
);
5921 rx_ring
->next_to_clean
= 0;
5922 rx_ring
->next_to_use
= 0;
5926 vfree(rx_ring
->rx_buffer_info
);
5927 rx_ring
->rx_buffer_info
= NULL
;
5928 dev_err(dev
, "Unable to allocate memory for the Rx descriptor ring\n");
5933 * ixgbe_setup_all_rx_resources - allocate all queues Rx resources
5934 * @adapter: board private structure
5936 * If this function returns with an error, then it's possible one or
5937 * more of the rings is populated (while the rest are not). It is the
5938 * callers duty to clean those orphaned rings.
5940 * Return 0 on success, negative on failure
5942 static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter
*adapter
)
5946 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
5947 err
= ixgbe_setup_rx_resources(adapter
->rx_ring
[i
]);
5951 e_err(probe
, "Allocation for Rx Queue %u failed\n", i
);
5956 err
= ixgbe_setup_fcoe_ddp_resources(adapter
);
5961 /* rewind the index freeing the rings as we go */
5963 ixgbe_free_rx_resources(adapter
->rx_ring
[i
]);
5968 * ixgbe_free_tx_resources - Free Tx Resources per Queue
5969 * @tx_ring: Tx descriptor ring for a specific queue
5971 * Free all transmit software resources
5973 void ixgbe_free_tx_resources(struct ixgbe_ring
*tx_ring
)
5975 ixgbe_clean_tx_ring(tx_ring
);
5977 vfree(tx_ring
->tx_buffer_info
);
5978 tx_ring
->tx_buffer_info
= NULL
;
5980 /* if not set, then don't free */
5984 dma_free_coherent(tx_ring
->dev
, tx_ring
->size
,
5985 tx_ring
->desc
, tx_ring
->dma
);
5987 tx_ring
->desc
= NULL
;
5991 * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues
5992 * @adapter: board private structure
5994 * Free all transmit software resources
5996 static void ixgbe_free_all_tx_resources(struct ixgbe_adapter
*adapter
)
6000 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
6001 if (adapter
->tx_ring
[i
]->desc
)
6002 ixgbe_free_tx_resources(adapter
->tx_ring
[i
]);
6006 * ixgbe_free_rx_resources - Free Rx Resources
6007 * @rx_ring: ring to clean the resources from
6009 * Free all receive software resources
6011 void ixgbe_free_rx_resources(struct ixgbe_ring
*rx_ring
)
6013 ixgbe_clean_rx_ring(rx_ring
);
6015 vfree(rx_ring
->rx_buffer_info
);
6016 rx_ring
->rx_buffer_info
= NULL
;
6018 /* if not set, then don't free */
6022 dma_free_coherent(rx_ring
->dev
, rx_ring
->size
,
6023 rx_ring
->desc
, rx_ring
->dma
);
6025 rx_ring
->desc
= NULL
;
6029 * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues
6030 * @adapter: board private structure
6032 * Free all receive software resources
6034 static void ixgbe_free_all_rx_resources(struct ixgbe_adapter
*adapter
)
6039 ixgbe_free_fcoe_ddp_resources(adapter
);
6042 for (i
= 0; i
< adapter
->num_rx_queues
; i
++)
6043 if (adapter
->rx_ring
[i
]->desc
)
6044 ixgbe_free_rx_resources(adapter
->rx_ring
[i
]);
6048 * ixgbe_change_mtu - Change the Maximum Transfer Unit
6049 * @netdev: network interface device structure
6050 * @new_mtu: new value for maximum frame size
6052 * Returns 0 on success, negative on failure
6054 static int ixgbe_change_mtu(struct net_device
*netdev
, int new_mtu
)
6056 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
6057 int max_frame
= new_mtu
+ ETH_HLEN
+ ETH_FCS_LEN
;
6059 /* MTU < 68 is an error and causes problems on some kernels */
6060 if ((new_mtu
< 68) || (max_frame
> IXGBE_MAX_JUMBO_FRAME_SIZE
))
6064 * For 82599EB we cannot allow legacy VFs to enable their receive
6065 * paths when MTU greater than 1500 is configured. So display a
6066 * warning that legacy VFs will be disabled.
6068 if ((adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
) &&
6069 (adapter
->hw
.mac
.type
== ixgbe_mac_82599EB
) &&
6070 (max_frame
> (ETH_FRAME_LEN
+ ETH_FCS_LEN
)))
6071 e_warn(probe
, "Setting MTU > 1500 will disable legacy VFs\n");
6073 e_info(probe
, "changing MTU from %d to %d\n", netdev
->mtu
, new_mtu
);
6075 /* must set new MTU before calling down or up */
6076 netdev
->mtu
= new_mtu
;
6078 if (netif_running(netdev
))
6079 ixgbe_reinit_locked(adapter
);
6085 * ixgbe_open - Called when a network interface is made active
6086 * @netdev: network interface device structure
6088 * Returns 0 on success, negative value on failure
6090 * The open entry point is called when a network interface is made
6091 * active by the system (IFF_UP). At this point all resources needed
6092 * for transmit and receive operations are allocated, the interrupt
6093 * handler is registered with the OS, the watchdog timer is started,
6094 * and the stack is notified that the interface is ready.
6096 int ixgbe_open(struct net_device
*netdev
)
6098 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
6099 struct ixgbe_hw
*hw
= &adapter
->hw
;
6102 /* disallow open during test */
6103 if (test_bit(__IXGBE_TESTING
, &adapter
->state
))
6106 netif_carrier_off(netdev
);
6108 /* allocate transmit descriptors */
6109 err
= ixgbe_setup_all_tx_resources(adapter
);
6113 /* allocate receive descriptors */
6114 err
= ixgbe_setup_all_rx_resources(adapter
);
6118 ixgbe_configure(adapter
);
6120 err
= ixgbe_request_irq(adapter
);
6124 /* Notify the stack of the actual queue counts. */
6125 if (adapter
->num_rx_pools
> 1)
6126 queues
= adapter
->num_rx_queues_per_pool
;
6128 queues
= adapter
->num_tx_queues
;
6130 err
= netif_set_real_num_tx_queues(netdev
, queues
);
6132 goto err_set_queues
;
6134 if (adapter
->num_rx_pools
> 1 &&
6135 adapter
->num_rx_queues
> IXGBE_MAX_L2A_QUEUES
)
6136 queues
= IXGBE_MAX_L2A_QUEUES
;
6138 queues
= adapter
->num_rx_queues
;
6139 err
= netif_set_real_num_rx_queues(netdev
, queues
);
6141 goto err_set_queues
;
6143 ixgbe_ptp_init(adapter
);
6145 ixgbe_up_complete(adapter
);
6147 ixgbe_clear_vxlan_port(adapter
);
6148 udp_tunnel_get_rx_info(netdev
);
6153 ixgbe_free_irq(adapter
);
6155 ixgbe_free_all_rx_resources(adapter
);
6156 if (hw
->phy
.ops
.set_phy_power
&& !adapter
->wol
)
6157 hw
->phy
.ops
.set_phy_power(&adapter
->hw
, false);
6159 ixgbe_free_all_tx_resources(adapter
);
6161 ixgbe_reset(adapter
);
6166 static void ixgbe_close_suspend(struct ixgbe_adapter
*adapter
)
6168 ixgbe_ptp_suspend(adapter
);
6170 if (adapter
->hw
.phy
.ops
.enter_lplu
) {
6171 adapter
->hw
.phy
.reset_disable
= true;
6172 ixgbe_down(adapter
);
6173 adapter
->hw
.phy
.ops
.enter_lplu(&adapter
->hw
);
6174 adapter
->hw
.phy
.reset_disable
= false;
6176 ixgbe_down(adapter
);
6179 ixgbe_free_irq(adapter
);
6181 ixgbe_free_all_tx_resources(adapter
);
6182 ixgbe_free_all_rx_resources(adapter
);
6186 * ixgbe_close - Disables a network interface
6187 * @netdev: network interface device structure
6189 * Returns 0, this is not allowed to fail
6191 * The close entry point is called when an interface is de-activated
6192 * by the OS. The hardware is still under the drivers control, but
6193 * needs to be disabled. A global MAC reset is issued to stop the
6194 * hardware, and all transmit and receive resources are freed.
6196 int ixgbe_close(struct net_device
*netdev
)
6198 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
6200 ixgbe_ptp_stop(adapter
);
6202 ixgbe_close_suspend(adapter
);
6204 ixgbe_fdir_filter_exit(adapter
);
6206 ixgbe_release_hw_control(adapter
);
6212 static int ixgbe_resume(struct pci_dev
*pdev
)
6214 struct ixgbe_adapter
*adapter
= pci_get_drvdata(pdev
);
6215 struct net_device
*netdev
= adapter
->netdev
;
6218 adapter
->hw
.hw_addr
= adapter
->io_addr
;
6219 pci_set_power_state(pdev
, PCI_D0
);
6220 pci_restore_state(pdev
);
6222 * pci_restore_state clears dev->state_saved so call
6223 * pci_save_state to restore it.
6225 pci_save_state(pdev
);
6227 err
= pci_enable_device_mem(pdev
);
6229 e_dev_err("Cannot enable PCI device from suspend\n");
6232 smp_mb__before_atomic();
6233 clear_bit(__IXGBE_DISABLED
, &adapter
->state
);
6234 pci_set_master(pdev
);
6236 pci_wake_from_d3(pdev
, false);
6238 ixgbe_reset(adapter
);
6240 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_WUS
, ~0);
6243 err
= ixgbe_init_interrupt_scheme(adapter
);
6244 if (!err
&& netif_running(netdev
))
6245 err
= ixgbe_open(netdev
);
6252 netif_device_attach(netdev
);
6256 #endif /* CONFIG_PM */
6258 static int __ixgbe_shutdown(struct pci_dev
*pdev
, bool *enable_wake
)
6260 struct ixgbe_adapter
*adapter
= pci_get_drvdata(pdev
);
6261 struct net_device
*netdev
= adapter
->netdev
;
6262 struct ixgbe_hw
*hw
= &adapter
->hw
;
6264 u32 wufc
= adapter
->wol
;
6269 netif_device_detach(netdev
);
6272 if (netif_running(netdev
))
6273 ixgbe_close_suspend(adapter
);
6276 ixgbe_clear_interrupt_scheme(adapter
);
6279 retval
= pci_save_state(pdev
);
6284 if (hw
->mac
.ops
.stop_link_on_d3
)
6285 hw
->mac
.ops
.stop_link_on_d3(hw
);
6288 ixgbe_set_rx_mode(netdev
);
6290 /* enable the optics for 82599 SFP+ fiber as we can WoL */
6291 if (hw
->mac
.ops
.enable_tx_laser
)
6292 hw
->mac
.ops
.enable_tx_laser(hw
);
6294 /* turn on all-multi mode if wake on multicast is enabled */
6295 if (wufc
& IXGBE_WUFC_MC
) {
6296 fctrl
= IXGBE_READ_REG(hw
, IXGBE_FCTRL
);
6297 fctrl
|= IXGBE_FCTRL_MPE
;
6298 IXGBE_WRITE_REG(hw
, IXGBE_FCTRL
, fctrl
);
6301 ctrl
= IXGBE_READ_REG(hw
, IXGBE_CTRL
);
6302 ctrl
|= IXGBE_CTRL_GIO_DIS
;
6303 IXGBE_WRITE_REG(hw
, IXGBE_CTRL
, ctrl
);
6305 IXGBE_WRITE_REG(hw
, IXGBE_WUFC
, wufc
);
6307 IXGBE_WRITE_REG(hw
, IXGBE_WUC
, 0);
6308 IXGBE_WRITE_REG(hw
, IXGBE_WUFC
, 0);
6311 switch (hw
->mac
.type
) {
6312 case ixgbe_mac_82598EB
:
6313 pci_wake_from_d3(pdev
, false);
6315 case ixgbe_mac_82599EB
:
6316 case ixgbe_mac_X540
:
6317 case ixgbe_mac_X550
:
6318 case ixgbe_mac_X550EM_x
:
6319 case ixgbe_mac_x550em_a
:
6320 pci_wake_from_d3(pdev
, !!wufc
);
6326 *enable_wake
= !!wufc
;
6327 if (hw
->phy
.ops
.set_phy_power
&& !*enable_wake
)
6328 hw
->phy
.ops
.set_phy_power(hw
, false);
6330 ixgbe_release_hw_control(adapter
);
6332 if (!test_and_set_bit(__IXGBE_DISABLED
, &adapter
->state
))
6333 pci_disable_device(pdev
);
6339 static int ixgbe_suspend(struct pci_dev
*pdev
, pm_message_t state
)
6344 retval
= __ixgbe_shutdown(pdev
, &wake
);
6349 pci_prepare_to_sleep(pdev
);
6351 pci_wake_from_d3(pdev
, false);
6352 pci_set_power_state(pdev
, PCI_D3hot
);
6357 #endif /* CONFIG_PM */
6359 static void ixgbe_shutdown(struct pci_dev
*pdev
)
6363 __ixgbe_shutdown(pdev
, &wake
);
6365 if (system_state
== SYSTEM_POWER_OFF
) {
6366 pci_wake_from_d3(pdev
, wake
);
6367 pci_set_power_state(pdev
, PCI_D3hot
);
6372 * ixgbe_update_stats - Update the board statistics counters.
6373 * @adapter: board private structure
6375 void ixgbe_update_stats(struct ixgbe_adapter
*adapter
)
6377 struct net_device
*netdev
= adapter
->netdev
;
6378 struct ixgbe_hw
*hw
= &adapter
->hw
;
6379 struct ixgbe_hw_stats
*hwstats
= &adapter
->stats
;
6381 u32 i
, missed_rx
= 0, mpc
, bprc
, lxon
, lxoff
, xon_off_tot
;
6382 u64 non_eop_descs
= 0, restart_queue
= 0, tx_busy
= 0;
6383 u64 alloc_rx_page_failed
= 0, alloc_rx_buff_failed
= 0;
6384 u64 bytes
= 0, packets
= 0, hw_csum_rx_error
= 0;
6386 if (test_bit(__IXGBE_DOWN
, &adapter
->state
) ||
6387 test_bit(__IXGBE_RESETTING
, &adapter
->state
))
6390 if (adapter
->flags2
& IXGBE_FLAG2_RSC_ENABLED
) {
6393 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
6394 rsc_count
+= adapter
->rx_ring
[i
]->rx_stats
.rsc_count
;
6395 rsc_flush
+= adapter
->rx_ring
[i
]->rx_stats
.rsc_flush
;
6397 adapter
->rsc_total_count
= rsc_count
;
6398 adapter
->rsc_total_flush
= rsc_flush
;
6401 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
6402 struct ixgbe_ring
*rx_ring
= adapter
->rx_ring
[i
];
6403 non_eop_descs
+= rx_ring
->rx_stats
.non_eop_descs
;
6404 alloc_rx_page_failed
+= rx_ring
->rx_stats
.alloc_rx_page_failed
;
6405 alloc_rx_buff_failed
+= rx_ring
->rx_stats
.alloc_rx_buff_failed
;
6406 hw_csum_rx_error
+= rx_ring
->rx_stats
.csum_err
;
6407 bytes
+= rx_ring
->stats
.bytes
;
6408 packets
+= rx_ring
->stats
.packets
;
6410 adapter
->non_eop_descs
= non_eop_descs
;
6411 adapter
->alloc_rx_page_failed
= alloc_rx_page_failed
;
6412 adapter
->alloc_rx_buff_failed
= alloc_rx_buff_failed
;
6413 adapter
->hw_csum_rx_error
= hw_csum_rx_error
;
6414 netdev
->stats
.rx_bytes
= bytes
;
6415 netdev
->stats
.rx_packets
= packets
;
6419 /* gather some stats to the adapter struct that are per queue */
6420 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
6421 struct ixgbe_ring
*tx_ring
= adapter
->tx_ring
[i
];
6422 restart_queue
+= tx_ring
->tx_stats
.restart_queue
;
6423 tx_busy
+= tx_ring
->tx_stats
.tx_busy
;
6424 bytes
+= tx_ring
->stats
.bytes
;
6425 packets
+= tx_ring
->stats
.packets
;
6427 adapter
->restart_queue
= restart_queue
;
6428 adapter
->tx_busy
= tx_busy
;
6429 netdev
->stats
.tx_bytes
= bytes
;
6430 netdev
->stats
.tx_packets
= packets
;
6432 hwstats
->crcerrs
+= IXGBE_READ_REG(hw
, IXGBE_CRCERRS
);
6434 /* 8 register reads */
6435 for (i
= 0; i
< 8; i
++) {
6436 /* for packet buffers not used, the register should read 0 */
6437 mpc
= IXGBE_READ_REG(hw
, IXGBE_MPC(i
));
6439 hwstats
->mpc
[i
] += mpc
;
6440 total_mpc
+= hwstats
->mpc
[i
];
6441 hwstats
->pxontxc
[i
] += IXGBE_READ_REG(hw
, IXGBE_PXONTXC(i
));
6442 hwstats
->pxofftxc
[i
] += IXGBE_READ_REG(hw
, IXGBE_PXOFFTXC(i
));
6443 switch (hw
->mac
.type
) {
6444 case ixgbe_mac_82598EB
:
6445 hwstats
->rnbc
[i
] += IXGBE_READ_REG(hw
, IXGBE_RNBC(i
));
6446 hwstats
->qbtc
[i
] += IXGBE_READ_REG(hw
, IXGBE_QBTC(i
));
6447 hwstats
->qbrc
[i
] += IXGBE_READ_REG(hw
, IXGBE_QBRC(i
));
6448 hwstats
->pxonrxc
[i
] +=
6449 IXGBE_READ_REG(hw
, IXGBE_PXONRXC(i
));
6451 case ixgbe_mac_82599EB
:
6452 case ixgbe_mac_X540
:
6453 case ixgbe_mac_X550
:
6454 case ixgbe_mac_X550EM_x
:
6455 case ixgbe_mac_x550em_a
:
6456 hwstats
->pxonrxc
[i
] +=
6457 IXGBE_READ_REG(hw
, IXGBE_PXONRXCNT(i
));
6464 /*16 register reads */
6465 for (i
= 0; i
< 16; i
++) {
6466 hwstats
->qptc
[i
] += IXGBE_READ_REG(hw
, IXGBE_QPTC(i
));
6467 hwstats
->qprc
[i
] += IXGBE_READ_REG(hw
, IXGBE_QPRC(i
));
6468 if ((hw
->mac
.type
== ixgbe_mac_82599EB
) ||
6469 (hw
->mac
.type
== ixgbe_mac_X540
) ||
6470 (hw
->mac
.type
== ixgbe_mac_X550
) ||
6471 (hw
->mac
.type
== ixgbe_mac_X550EM_x
) ||
6472 (hw
->mac
.type
== ixgbe_mac_x550em_a
)) {
6473 hwstats
->qbtc
[i
] += IXGBE_READ_REG(hw
, IXGBE_QBTC_L(i
));
6474 IXGBE_READ_REG(hw
, IXGBE_QBTC_H(i
)); /* to clear */
6475 hwstats
->qbrc
[i
] += IXGBE_READ_REG(hw
, IXGBE_QBRC_L(i
));
6476 IXGBE_READ_REG(hw
, IXGBE_QBRC_H(i
)); /* to clear */
6480 hwstats
->gprc
+= IXGBE_READ_REG(hw
, IXGBE_GPRC
);
6481 /* work around hardware counting issue */
6482 hwstats
->gprc
-= missed_rx
;
6484 ixgbe_update_xoff_received(adapter
);
6486 /* 82598 hardware only has a 32 bit counter in the high register */
6487 switch (hw
->mac
.type
) {
6488 case ixgbe_mac_82598EB
:
6489 hwstats
->lxonrxc
+= IXGBE_READ_REG(hw
, IXGBE_LXONRXC
);
6490 hwstats
->gorc
+= IXGBE_READ_REG(hw
, IXGBE_GORCH
);
6491 hwstats
->gotc
+= IXGBE_READ_REG(hw
, IXGBE_GOTCH
);
6492 hwstats
->tor
+= IXGBE_READ_REG(hw
, IXGBE_TORH
);
6494 case ixgbe_mac_X540
:
6495 case ixgbe_mac_X550
:
6496 case ixgbe_mac_X550EM_x
:
6497 case ixgbe_mac_x550em_a
:
6498 /* OS2BMC stats are X540 and later */
6499 hwstats
->o2bgptc
+= IXGBE_READ_REG(hw
, IXGBE_O2BGPTC
);
6500 hwstats
->o2bspc
+= IXGBE_READ_REG(hw
, IXGBE_O2BSPC
);
6501 hwstats
->b2ospc
+= IXGBE_READ_REG(hw
, IXGBE_B2OSPC
);
6502 hwstats
->b2ogprc
+= IXGBE_READ_REG(hw
, IXGBE_B2OGPRC
);
6503 case ixgbe_mac_82599EB
:
6504 for (i
= 0; i
< 16; i
++)
6505 adapter
->hw_rx_no_dma_resources
+=
6506 IXGBE_READ_REG(hw
, IXGBE_QPRDC(i
));
6507 hwstats
->gorc
+= IXGBE_READ_REG(hw
, IXGBE_GORCL
);
6508 IXGBE_READ_REG(hw
, IXGBE_GORCH
); /* to clear */
6509 hwstats
->gotc
+= IXGBE_READ_REG(hw
, IXGBE_GOTCL
);
6510 IXGBE_READ_REG(hw
, IXGBE_GOTCH
); /* to clear */
6511 hwstats
->tor
+= IXGBE_READ_REG(hw
, IXGBE_TORL
);
6512 IXGBE_READ_REG(hw
, IXGBE_TORH
); /* to clear */
6513 hwstats
->lxonrxc
+= IXGBE_READ_REG(hw
, IXGBE_LXONRXCNT
);
6514 hwstats
->fdirmatch
+= IXGBE_READ_REG(hw
, IXGBE_FDIRMATCH
);
6515 hwstats
->fdirmiss
+= IXGBE_READ_REG(hw
, IXGBE_FDIRMISS
);
6517 hwstats
->fccrc
+= IXGBE_READ_REG(hw
, IXGBE_FCCRC
);
6518 hwstats
->fcoerpdc
+= IXGBE_READ_REG(hw
, IXGBE_FCOERPDC
);
6519 hwstats
->fcoeprc
+= IXGBE_READ_REG(hw
, IXGBE_FCOEPRC
);
6520 hwstats
->fcoeptc
+= IXGBE_READ_REG(hw
, IXGBE_FCOEPTC
);
6521 hwstats
->fcoedwrc
+= IXGBE_READ_REG(hw
, IXGBE_FCOEDWRC
);
6522 hwstats
->fcoedwtc
+= IXGBE_READ_REG(hw
, IXGBE_FCOEDWTC
);
6523 /* Add up per cpu counters for total ddp aloc fail */
6524 if (adapter
->fcoe
.ddp_pool
) {
6525 struct ixgbe_fcoe
*fcoe
= &adapter
->fcoe
;
6526 struct ixgbe_fcoe_ddp_pool
*ddp_pool
;
6528 u64 noddp
= 0, noddp_ext_buff
= 0;
6529 for_each_possible_cpu(cpu
) {
6530 ddp_pool
= per_cpu_ptr(fcoe
->ddp_pool
, cpu
);
6531 noddp
+= ddp_pool
->noddp
;
6532 noddp_ext_buff
+= ddp_pool
->noddp_ext_buff
;
6534 hwstats
->fcoe_noddp
= noddp
;
6535 hwstats
->fcoe_noddp_ext_buff
= noddp_ext_buff
;
6537 #endif /* IXGBE_FCOE */
6542 bprc
= IXGBE_READ_REG(hw
, IXGBE_BPRC
);
6543 hwstats
->bprc
+= bprc
;
6544 hwstats
->mprc
+= IXGBE_READ_REG(hw
, IXGBE_MPRC
);
6545 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
6546 hwstats
->mprc
-= bprc
;
6547 hwstats
->roc
+= IXGBE_READ_REG(hw
, IXGBE_ROC
);
6548 hwstats
->prc64
+= IXGBE_READ_REG(hw
, IXGBE_PRC64
);
6549 hwstats
->prc127
+= IXGBE_READ_REG(hw
, IXGBE_PRC127
);
6550 hwstats
->prc255
+= IXGBE_READ_REG(hw
, IXGBE_PRC255
);
6551 hwstats
->prc511
+= IXGBE_READ_REG(hw
, IXGBE_PRC511
);
6552 hwstats
->prc1023
+= IXGBE_READ_REG(hw
, IXGBE_PRC1023
);
6553 hwstats
->prc1522
+= IXGBE_READ_REG(hw
, IXGBE_PRC1522
);
6554 hwstats
->rlec
+= IXGBE_READ_REG(hw
, IXGBE_RLEC
);
6555 lxon
= IXGBE_READ_REG(hw
, IXGBE_LXONTXC
);
6556 hwstats
->lxontxc
+= lxon
;
6557 lxoff
= IXGBE_READ_REG(hw
, IXGBE_LXOFFTXC
);
6558 hwstats
->lxofftxc
+= lxoff
;
6559 hwstats
->gptc
+= IXGBE_READ_REG(hw
, IXGBE_GPTC
);
6560 hwstats
->mptc
+= IXGBE_READ_REG(hw
, IXGBE_MPTC
);
6562 * 82598 errata - tx of flow control packets is included in tx counters
6564 xon_off_tot
= lxon
+ lxoff
;
6565 hwstats
->gptc
-= xon_off_tot
;
6566 hwstats
->mptc
-= xon_off_tot
;
6567 hwstats
->gotc
-= (xon_off_tot
* (ETH_ZLEN
+ ETH_FCS_LEN
));
6568 hwstats
->ruc
+= IXGBE_READ_REG(hw
, IXGBE_RUC
);
6569 hwstats
->rfc
+= IXGBE_READ_REG(hw
, IXGBE_RFC
);
6570 hwstats
->rjc
+= IXGBE_READ_REG(hw
, IXGBE_RJC
);
6571 hwstats
->tpr
+= IXGBE_READ_REG(hw
, IXGBE_TPR
);
6572 hwstats
->ptc64
+= IXGBE_READ_REG(hw
, IXGBE_PTC64
);
6573 hwstats
->ptc64
-= xon_off_tot
;
6574 hwstats
->ptc127
+= IXGBE_READ_REG(hw
, IXGBE_PTC127
);
6575 hwstats
->ptc255
+= IXGBE_READ_REG(hw
, IXGBE_PTC255
);
6576 hwstats
->ptc511
+= IXGBE_READ_REG(hw
, IXGBE_PTC511
);
6577 hwstats
->ptc1023
+= IXGBE_READ_REG(hw
, IXGBE_PTC1023
);
6578 hwstats
->ptc1522
+= IXGBE_READ_REG(hw
, IXGBE_PTC1522
);
6579 hwstats
->bptc
+= IXGBE_READ_REG(hw
, IXGBE_BPTC
);
6581 /* Fill out the OS statistics structure */
6582 netdev
->stats
.multicast
= hwstats
->mprc
;
6585 netdev
->stats
.rx_errors
= hwstats
->crcerrs
+ hwstats
->rlec
;
6586 netdev
->stats
.rx_dropped
= 0;
6587 netdev
->stats
.rx_length_errors
= hwstats
->rlec
;
6588 netdev
->stats
.rx_crc_errors
= hwstats
->crcerrs
;
6589 netdev
->stats
.rx_missed_errors
= total_mpc
;
6593 * ixgbe_fdir_reinit_subtask - worker thread to reinit FDIR filter table
6594 * @adapter: pointer to the device adapter structure
6596 static void ixgbe_fdir_reinit_subtask(struct ixgbe_adapter
*adapter
)
6598 struct ixgbe_hw
*hw
= &adapter
->hw
;
6601 if (!(adapter
->flags2
& IXGBE_FLAG2_FDIR_REQUIRES_REINIT
))
6604 adapter
->flags2
&= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT
;
6606 /* if interface is down do nothing */
6607 if (test_bit(__IXGBE_DOWN
, &adapter
->state
))
6610 /* do nothing if we are not using signature filters */
6611 if (!(adapter
->flags
& IXGBE_FLAG_FDIR_HASH_CAPABLE
))
6614 adapter
->fdir_overflow
++;
6616 if (ixgbe_reinit_fdir_tables_82599(hw
) == 0) {
6617 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
6618 set_bit(__IXGBE_TX_FDIR_INIT_DONE
,
6619 &(adapter
->tx_ring
[i
]->state
));
6620 /* re-enable flow director interrupts */
6621 IXGBE_WRITE_REG(hw
, IXGBE_EIMS
, IXGBE_EIMS_FLOW_DIR
);
6623 e_err(probe
, "failed to finish FDIR re-initialization, "
6624 "ignored adding FDIR ATR filters\n");
6629 * ixgbe_check_hang_subtask - check for hung queues and dropped interrupts
6630 * @adapter: pointer to the device adapter structure
6632 * This function serves two purposes. First it strobes the interrupt lines
6633 * in order to make certain interrupts are occurring. Secondly it sets the
6634 * bits needed to check for TX hangs. As a result we should immediately
6635 * determine if a hang has occurred.
6637 static void ixgbe_check_hang_subtask(struct ixgbe_adapter
*adapter
)
6639 struct ixgbe_hw
*hw
= &adapter
->hw
;
6643 /* If we're down, removing or resetting, just bail */
6644 if (test_bit(__IXGBE_DOWN
, &adapter
->state
) ||
6645 test_bit(__IXGBE_REMOVING
, &adapter
->state
) ||
6646 test_bit(__IXGBE_RESETTING
, &adapter
->state
))
6649 /* Force detection of hung controller */
6650 if (netif_carrier_ok(adapter
->netdev
)) {
6651 for (i
= 0; i
< adapter
->num_tx_queues
; i
++)
6652 set_check_for_tx_hang(adapter
->tx_ring
[i
]);
6655 if (!(adapter
->flags
& IXGBE_FLAG_MSIX_ENABLED
)) {
6657 * for legacy and MSI interrupts don't set any bits
6658 * that are enabled for EIAM, because this operation
6659 * would set *both* EIMS and EICS for any bit in EIAM
6661 IXGBE_WRITE_REG(hw
, IXGBE_EICS
,
6662 (IXGBE_EICS_TCP_TIMER
| IXGBE_EICS_OTHER
));
6664 /* get one bit for every active tx/rx interrupt vector */
6665 for (i
= 0; i
< adapter
->num_q_vectors
; i
++) {
6666 struct ixgbe_q_vector
*qv
= adapter
->q_vector
[i
];
6667 if (qv
->rx
.ring
|| qv
->tx
.ring
)
6672 /* Cause software interrupt to ensure rings are cleaned */
6673 ixgbe_irq_rearm_queues(adapter
, eics
);
6677 * ixgbe_watchdog_update_link - update the link status
6678 * @adapter: pointer to the device adapter structure
6679 * @link_speed: pointer to a u32 to store the link_speed
6681 static void ixgbe_watchdog_update_link(struct ixgbe_adapter
*adapter
)
6683 struct ixgbe_hw
*hw
= &adapter
->hw
;
6684 u32 link_speed
= adapter
->link_speed
;
6685 bool link_up
= adapter
->link_up
;
6686 bool pfc_en
= adapter
->dcb_cfg
.pfc_mode_enable
;
6688 if (!(adapter
->flags
& IXGBE_FLAG_NEED_LINK_UPDATE
))
6691 if (hw
->mac
.ops
.check_link
) {
6692 hw
->mac
.ops
.check_link(hw
, &link_speed
, &link_up
, false);
6694 /* always assume link is up, if no check link function */
6695 link_speed
= IXGBE_LINK_SPEED_10GB_FULL
;
6699 if (adapter
->ixgbe_ieee_pfc
)
6700 pfc_en
|= !!(adapter
->ixgbe_ieee_pfc
->pfc_en
);
6702 if (link_up
&& !((adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) && pfc_en
)) {
6703 hw
->mac
.ops
.fc_enable(hw
);
6704 ixgbe_set_rx_drop_en(adapter
);
6708 time_after(jiffies
, (adapter
->link_check_timeout
+
6709 IXGBE_TRY_LINK_TIMEOUT
))) {
6710 adapter
->flags
&= ~IXGBE_FLAG_NEED_LINK_UPDATE
;
6711 IXGBE_WRITE_REG(hw
, IXGBE_EIMS
, IXGBE_EIMC_LSC
);
6712 IXGBE_WRITE_FLUSH(hw
);
6715 adapter
->link_up
= link_up
;
6716 adapter
->link_speed
= link_speed
;
6719 static void ixgbe_update_default_up(struct ixgbe_adapter
*adapter
)
6721 #ifdef CONFIG_IXGBE_DCB
6722 struct net_device
*netdev
= adapter
->netdev
;
6723 struct dcb_app app
= {
6724 .selector
= IEEE_8021QAZ_APP_SEL_ETHERTYPE
,
6729 if (adapter
->dcbx_cap
& DCB_CAP_DCBX_VER_IEEE
)
6730 up
= dcb_ieee_getapp_mask(netdev
, &app
);
6732 adapter
->default_up
= (up
> 1) ? (ffs(up
) - 1) : 0;
6737 * ixgbe_watchdog_link_is_up - update netif_carrier status and
6738 * print link up message
6739 * @adapter: pointer to the device adapter structure
6741 static void ixgbe_watchdog_link_is_up(struct ixgbe_adapter
*adapter
)
6743 struct net_device
*netdev
= adapter
->netdev
;
6744 struct ixgbe_hw
*hw
= &adapter
->hw
;
6745 struct net_device
*upper
;
6746 struct list_head
*iter
;
6747 u32 link_speed
= adapter
->link_speed
;
6748 const char *speed_str
;
6749 bool flow_rx
, flow_tx
;
6751 /* only continue if link was previously down */
6752 if (netif_carrier_ok(netdev
))
6755 adapter
->flags2
&= ~IXGBE_FLAG2_SEARCH_FOR_SFP
;
6757 switch (hw
->mac
.type
) {
6758 case ixgbe_mac_82598EB
: {
6759 u32 frctl
= IXGBE_READ_REG(hw
, IXGBE_FCTRL
);
6760 u32 rmcs
= IXGBE_READ_REG(hw
, IXGBE_RMCS
);
6761 flow_rx
= !!(frctl
& IXGBE_FCTRL_RFCE
);
6762 flow_tx
= !!(rmcs
& IXGBE_RMCS_TFCE_802_3X
);
6765 case ixgbe_mac_X540
:
6766 case ixgbe_mac_X550
:
6767 case ixgbe_mac_X550EM_x
:
6768 case ixgbe_mac_x550em_a
:
6769 case ixgbe_mac_82599EB
: {
6770 u32 mflcn
= IXGBE_READ_REG(hw
, IXGBE_MFLCN
);
6771 u32 fccfg
= IXGBE_READ_REG(hw
, IXGBE_FCCFG
);
6772 flow_rx
= !!(mflcn
& IXGBE_MFLCN_RFCE
);
6773 flow_tx
= !!(fccfg
& IXGBE_FCCFG_TFCE_802_3X
);
6782 adapter
->last_rx_ptp_check
= jiffies
;
6784 if (test_bit(__IXGBE_PTP_RUNNING
, &adapter
->state
))
6785 ixgbe_ptp_start_cyclecounter(adapter
);
6787 switch (link_speed
) {
6788 case IXGBE_LINK_SPEED_10GB_FULL
:
6789 speed_str
= "10 Gbps";
6791 case IXGBE_LINK_SPEED_2_5GB_FULL
:
6792 speed_str
= "2.5 Gbps";
6794 case IXGBE_LINK_SPEED_1GB_FULL
:
6795 speed_str
= "1 Gbps";
6797 case IXGBE_LINK_SPEED_100_FULL
:
6798 speed_str
= "100 Mbps";
6801 speed_str
= "unknown speed";
6804 e_info(drv
, "NIC Link is Up %s, Flow Control: %s\n", speed_str
,
6805 ((flow_rx
&& flow_tx
) ? "RX/TX" :
6807 (flow_tx
? "TX" : "None"))));
6809 netif_carrier_on(netdev
);
6810 ixgbe_check_vf_rate_limit(adapter
);
6812 /* enable transmits */
6813 netif_tx_wake_all_queues(adapter
->netdev
);
6815 /* enable any upper devices */
6817 netdev_for_each_all_upper_dev_rcu(adapter
->netdev
, upper
, iter
) {
6818 if (netif_is_macvlan(upper
)) {
6819 struct macvlan_dev
*vlan
= netdev_priv(upper
);
6822 netif_tx_wake_all_queues(upper
);
6827 /* update the default user priority for VFs */
6828 ixgbe_update_default_up(adapter
);
6830 /* ping all the active vfs to let them know link has changed */
6831 ixgbe_ping_all_vfs(adapter
);
6835 * ixgbe_watchdog_link_is_down - update netif_carrier status and
6836 * print link down message
6837 * @adapter: pointer to the adapter structure
6839 static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter
*adapter
)
6841 struct net_device
*netdev
= adapter
->netdev
;
6842 struct ixgbe_hw
*hw
= &adapter
->hw
;
6844 adapter
->link_up
= false;
6845 adapter
->link_speed
= 0;
6847 /* only continue if link was up previously */
6848 if (!netif_carrier_ok(netdev
))
6851 /* poll for SFP+ cable when link is down */
6852 if (ixgbe_is_sfp(hw
) && hw
->mac
.type
== ixgbe_mac_82598EB
)
6853 adapter
->flags2
|= IXGBE_FLAG2_SEARCH_FOR_SFP
;
6855 if (test_bit(__IXGBE_PTP_RUNNING
, &adapter
->state
))
6856 ixgbe_ptp_start_cyclecounter(adapter
);
6858 e_info(drv
, "NIC Link is Down\n");
6859 netif_carrier_off(netdev
);
6861 /* ping all the active vfs to let them know link has changed */
6862 ixgbe_ping_all_vfs(adapter
);
6865 static bool ixgbe_ring_tx_pending(struct ixgbe_adapter
*adapter
)
6869 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
6870 struct ixgbe_ring
*tx_ring
= adapter
->tx_ring
[i
];
6872 if (tx_ring
->next_to_use
!= tx_ring
->next_to_clean
)
6879 static bool ixgbe_vf_tx_pending(struct ixgbe_adapter
*adapter
)
6881 struct ixgbe_hw
*hw
= &adapter
->hw
;
6882 struct ixgbe_ring_feature
*vmdq
= &adapter
->ring_feature
[RING_F_VMDQ
];
6883 u32 q_per_pool
= __ALIGN_MASK(1, ~vmdq
->mask
);
6887 if (!adapter
->num_vfs
)
6890 /* resetting the PF is only needed for MAC before X550 */
6891 if (hw
->mac
.type
>= ixgbe_mac_X550
)
6894 for (i
= 0; i
< adapter
->num_vfs
; i
++) {
6895 for (j
= 0; j
< q_per_pool
; j
++) {
6898 h
= IXGBE_READ_REG(hw
, IXGBE_PVFTDHN(q_per_pool
, i
, j
));
6899 t
= IXGBE_READ_REG(hw
, IXGBE_PVFTDTN(q_per_pool
, i
, j
));
6910 * ixgbe_watchdog_flush_tx - flush queues on link down
6911 * @adapter: pointer to the device adapter structure
6913 static void ixgbe_watchdog_flush_tx(struct ixgbe_adapter
*adapter
)
6915 if (!netif_carrier_ok(adapter
->netdev
)) {
6916 if (ixgbe_ring_tx_pending(adapter
) ||
6917 ixgbe_vf_tx_pending(adapter
)) {
6918 /* We've lost link, so the controller stops DMA,
6919 * but we've got queued Tx work that's never going
6920 * to get done, so reset controller to flush Tx.
6921 * (Do the reset outside of interrupt context).
6923 e_warn(drv
, "initiating reset to clear Tx work after link loss\n");
6924 adapter
->flags2
|= IXGBE_FLAG2_RESET_REQUESTED
;
6929 #ifdef CONFIG_PCI_IOV
6930 static inline void ixgbe_issue_vf_flr(struct ixgbe_adapter
*adapter
,
6931 struct pci_dev
*vfdev
)
6933 if (!pci_wait_for_pending_transaction(vfdev
))
6934 e_dev_warn("Issuing VFLR with pending transactions\n");
6936 e_dev_err("Issuing VFLR for VF %s\n", pci_name(vfdev
));
6937 pcie_capability_set_word(vfdev
, PCI_EXP_DEVCTL
, PCI_EXP_DEVCTL_BCR_FLR
);
6942 static void ixgbe_check_for_bad_vf(struct ixgbe_adapter
*adapter
)
6944 struct ixgbe_hw
*hw
= &adapter
->hw
;
6945 struct pci_dev
*pdev
= adapter
->pdev
;
6949 if (!(netif_carrier_ok(adapter
->netdev
)))
6952 gpc
= IXGBE_READ_REG(hw
, IXGBE_TXDGPC
);
6953 if (gpc
) /* If incrementing then no need for the check below */
6955 /* Check to see if a bad DMA write target from an errant or
6956 * malicious VF has caused a PCIe error. If so then we can
6957 * issue a VFLR to the offending VF(s) and then resume without
6958 * requesting a full slot reset.
6964 /* check status reg for all VFs owned by this PF */
6965 for (vf
= 0; vf
< adapter
->num_vfs
; ++vf
) {
6966 struct pci_dev
*vfdev
= adapter
->vfinfo
[vf
].vfdev
;
6971 pci_read_config_word(vfdev
, PCI_STATUS
, &status_reg
);
6972 if (status_reg
!= IXGBE_FAILED_READ_CFG_WORD
&&
6973 status_reg
& PCI_STATUS_REC_MASTER_ABORT
)
6974 ixgbe_issue_vf_flr(adapter
, vfdev
);
6978 static void ixgbe_spoof_check(struct ixgbe_adapter
*adapter
)
6982 /* Do not perform spoof check for 82598 or if not in IOV mode */
6983 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
||
6984 adapter
->num_vfs
== 0)
6987 ssvpc
= IXGBE_READ_REG(&adapter
->hw
, IXGBE_SSVPC
);
6990 * ssvpc register is cleared on read, if zero then no
6991 * spoofed packets in the last interval.
6996 e_warn(drv
, "%u Spoofed packets detected\n", ssvpc
);
6999 static void ixgbe_spoof_check(struct ixgbe_adapter __always_unused
*adapter
)
7004 ixgbe_check_for_bad_vf(struct ixgbe_adapter __always_unused
*adapter
)
7007 #endif /* CONFIG_PCI_IOV */
7011 * ixgbe_watchdog_subtask - check and bring link up
7012 * @adapter: pointer to the device adapter structure
7014 static void ixgbe_watchdog_subtask(struct ixgbe_adapter
*adapter
)
7016 /* if interface is down, removing or resetting, do nothing */
7017 if (test_bit(__IXGBE_DOWN
, &adapter
->state
) ||
7018 test_bit(__IXGBE_REMOVING
, &adapter
->state
) ||
7019 test_bit(__IXGBE_RESETTING
, &adapter
->state
))
7022 ixgbe_watchdog_update_link(adapter
);
7024 if (adapter
->link_up
)
7025 ixgbe_watchdog_link_is_up(adapter
);
7027 ixgbe_watchdog_link_is_down(adapter
);
7029 ixgbe_check_for_bad_vf(adapter
);
7030 ixgbe_spoof_check(adapter
);
7031 ixgbe_update_stats(adapter
);
7033 ixgbe_watchdog_flush_tx(adapter
);
7037 * ixgbe_sfp_detection_subtask - poll for SFP+ cable
7038 * @adapter: the ixgbe adapter structure
7040 static void ixgbe_sfp_detection_subtask(struct ixgbe_adapter
*adapter
)
7042 struct ixgbe_hw
*hw
= &adapter
->hw
;
7045 /* not searching for SFP so there is nothing to do here */
7046 if (!(adapter
->flags2
& IXGBE_FLAG2_SEARCH_FOR_SFP
) &&
7047 !(adapter
->flags2
& IXGBE_FLAG2_SFP_NEEDS_RESET
))
7050 if (adapter
->sfp_poll_time
&&
7051 time_after(adapter
->sfp_poll_time
, jiffies
))
7052 return; /* If not yet time to poll for SFP */
7054 /* someone else is in init, wait until next service event */
7055 if (test_and_set_bit(__IXGBE_IN_SFP_INIT
, &adapter
->state
))
7058 adapter
->sfp_poll_time
= jiffies
+ IXGBE_SFP_POLL_JIFFIES
- 1;
7060 err
= hw
->phy
.ops
.identify_sfp(hw
);
7061 if (err
== IXGBE_ERR_SFP_NOT_SUPPORTED
)
7064 if (err
== IXGBE_ERR_SFP_NOT_PRESENT
) {
7065 /* If no cable is present, then we need to reset
7066 * the next time we find a good cable. */
7067 adapter
->flags2
|= IXGBE_FLAG2_SFP_NEEDS_RESET
;
7074 /* exit if reset not needed */
7075 if (!(adapter
->flags2
& IXGBE_FLAG2_SFP_NEEDS_RESET
))
7078 adapter
->flags2
&= ~IXGBE_FLAG2_SFP_NEEDS_RESET
;
7081 * A module may be identified correctly, but the EEPROM may not have
7082 * support for that module. setup_sfp() will fail in that case, so
7083 * we should not allow that module to load.
7085 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
7086 err
= hw
->phy
.ops
.reset(hw
);
7088 err
= hw
->mac
.ops
.setup_sfp(hw
);
7090 if (err
== IXGBE_ERR_SFP_NOT_SUPPORTED
)
7093 adapter
->flags
|= IXGBE_FLAG_NEED_LINK_CONFIG
;
7094 e_info(probe
, "detected SFP+: %d\n", hw
->phy
.sfp_type
);
7097 clear_bit(__IXGBE_IN_SFP_INIT
, &adapter
->state
);
7099 if ((err
== IXGBE_ERR_SFP_NOT_SUPPORTED
) &&
7100 (adapter
->netdev
->reg_state
== NETREG_REGISTERED
)) {
7101 e_dev_err("failed to initialize because an unsupported "
7102 "SFP+ module type was detected.\n");
7103 e_dev_err("Reload the driver after installing a "
7104 "supported module.\n");
7105 unregister_netdev(adapter
->netdev
);
7110 * ixgbe_sfp_link_config_subtask - set up link SFP after module install
7111 * @adapter: the ixgbe adapter structure
7113 static void ixgbe_sfp_link_config_subtask(struct ixgbe_adapter
*adapter
)
7115 struct ixgbe_hw
*hw
= &adapter
->hw
;
7117 bool autoneg
= false;
7119 if (!(adapter
->flags
& IXGBE_FLAG_NEED_LINK_CONFIG
))
7122 /* someone else is in init, wait until next service event */
7123 if (test_and_set_bit(__IXGBE_IN_SFP_INIT
, &adapter
->state
))
7126 adapter
->flags
&= ~IXGBE_FLAG_NEED_LINK_CONFIG
;
7128 speed
= hw
->phy
.autoneg_advertised
;
7129 if ((!speed
) && (hw
->mac
.ops
.get_link_capabilities
)) {
7130 hw
->mac
.ops
.get_link_capabilities(hw
, &speed
, &autoneg
);
7132 /* setup the highest link when no autoneg */
7134 if (speed
& IXGBE_LINK_SPEED_10GB_FULL
)
7135 speed
= IXGBE_LINK_SPEED_10GB_FULL
;
7139 if (hw
->mac
.ops
.setup_link
)
7140 hw
->mac
.ops
.setup_link(hw
, speed
, true);
7142 adapter
->flags
|= IXGBE_FLAG_NEED_LINK_UPDATE
;
7143 adapter
->link_check_timeout
= jiffies
;
7144 clear_bit(__IXGBE_IN_SFP_INIT
, &adapter
->state
);
7148 * ixgbe_service_timer - Timer Call-back
7149 * @data: pointer to adapter cast into an unsigned long
7151 static void ixgbe_service_timer(unsigned long data
)
7153 struct ixgbe_adapter
*adapter
= (struct ixgbe_adapter
*)data
;
7154 unsigned long next_event_offset
;
7156 /* poll faster when waiting for link */
7157 if (adapter
->flags
& IXGBE_FLAG_NEED_LINK_UPDATE
)
7158 next_event_offset
= HZ
/ 10;
7160 next_event_offset
= HZ
* 2;
7162 /* Reset the timer */
7163 mod_timer(&adapter
->service_timer
, next_event_offset
+ jiffies
);
7165 ixgbe_service_event_schedule(adapter
);
7168 static void ixgbe_phy_interrupt_subtask(struct ixgbe_adapter
*adapter
)
7170 struct ixgbe_hw
*hw
= &adapter
->hw
;
7173 if (!(adapter
->flags2
& IXGBE_FLAG2_PHY_INTERRUPT
))
7176 adapter
->flags2
&= ~IXGBE_FLAG2_PHY_INTERRUPT
;
7178 if (!hw
->phy
.ops
.handle_lasi
)
7181 status
= hw
->phy
.ops
.handle_lasi(&adapter
->hw
);
7182 if (status
!= IXGBE_ERR_OVERTEMP
)
7185 e_crit(drv
, "%s\n", ixgbe_overheat_msg
);
7188 static void ixgbe_reset_subtask(struct ixgbe_adapter
*adapter
)
7190 if (!(adapter
->flags2
& IXGBE_FLAG2_RESET_REQUESTED
))
7193 adapter
->flags2
&= ~IXGBE_FLAG2_RESET_REQUESTED
;
7195 /* If we're already down, removing or resetting, just bail */
7196 if (test_bit(__IXGBE_DOWN
, &adapter
->state
) ||
7197 test_bit(__IXGBE_REMOVING
, &adapter
->state
) ||
7198 test_bit(__IXGBE_RESETTING
, &adapter
->state
))
7201 ixgbe_dump(adapter
);
7202 netdev_err(adapter
->netdev
, "Reset adapter\n");
7203 adapter
->tx_timeout_count
++;
7206 ixgbe_reinit_locked(adapter
);
7211 * ixgbe_service_task - manages and runs subtasks
7212 * @work: pointer to work_struct containing our data
7214 static void ixgbe_service_task(struct work_struct
*work
)
7216 struct ixgbe_adapter
*adapter
= container_of(work
,
7217 struct ixgbe_adapter
,
7219 if (ixgbe_removed(adapter
->hw
.hw_addr
)) {
7220 if (!test_bit(__IXGBE_DOWN
, &adapter
->state
)) {
7222 ixgbe_down(adapter
);
7225 ixgbe_service_event_complete(adapter
);
7228 if (adapter
->flags2
& IXGBE_FLAG2_VXLAN_REREG_NEEDED
) {
7230 adapter
->flags2
&= ~IXGBE_FLAG2_VXLAN_REREG_NEEDED
;
7231 udp_tunnel_get_rx_info(adapter
->netdev
);
7234 ixgbe_reset_subtask(adapter
);
7235 ixgbe_phy_interrupt_subtask(adapter
);
7236 ixgbe_sfp_detection_subtask(adapter
);
7237 ixgbe_sfp_link_config_subtask(adapter
);
7238 ixgbe_check_overtemp_subtask(adapter
);
7239 ixgbe_watchdog_subtask(adapter
);
7240 ixgbe_fdir_reinit_subtask(adapter
);
7241 ixgbe_check_hang_subtask(adapter
);
7243 if (test_bit(__IXGBE_PTP_RUNNING
, &adapter
->state
)) {
7244 ixgbe_ptp_overflow_check(adapter
);
7245 ixgbe_ptp_rx_hang(adapter
);
7248 ixgbe_service_event_complete(adapter
);
7251 static int ixgbe_tso(struct ixgbe_ring
*tx_ring
,
7252 struct ixgbe_tx_buffer
*first
,
7255 u32 vlan_macip_lens
, type_tucmd
, mss_l4len_idx
;
7256 struct sk_buff
*skb
= first
->skb
;
7266 u32 paylen
, l4_offset
;
7269 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
)
7272 if (!skb_is_gso(skb
))
7275 err
= skb_cow_head(skb
, 0);
7279 ip
.hdr
= skb_network_header(skb
);
7280 l4
.hdr
= skb_checksum_start(skb
);
7282 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */
7283 type_tucmd
= IXGBE_ADVTXD_TUCMD_L4T_TCP
;
7285 /* initialize outer IP header fields */
7286 if (ip
.v4
->version
== 4) {
7287 /* IP header will have to cancel out any data that
7288 * is not a part of the outer IP header
7290 ip
.v4
->check
= csum_fold(csum_add(lco_csum(skb
),
7291 csum_unfold(l4
.tcp
->check
)));
7292 type_tucmd
|= IXGBE_ADVTXD_TUCMD_IPV4
;
7295 first
->tx_flags
|= IXGBE_TX_FLAGS_TSO
|
7296 IXGBE_TX_FLAGS_CSUM
|
7297 IXGBE_TX_FLAGS_IPV4
;
7299 ip
.v6
->payload_len
= 0;
7300 first
->tx_flags
|= IXGBE_TX_FLAGS_TSO
|
7301 IXGBE_TX_FLAGS_CSUM
;
7304 /* determine offset of inner transport header */
7305 l4_offset
= l4
.hdr
- skb
->data
;
7307 /* compute length of segmentation header */
7308 *hdr_len
= (l4
.tcp
->doff
* 4) + l4_offset
;
7310 /* remove payload length from inner checksum */
7311 paylen
= skb
->len
- l4_offset
;
7312 csum_replace_by_diff(&l4
.tcp
->check
, htonl(paylen
));
7314 /* update gso size and bytecount with header size */
7315 first
->gso_segs
= skb_shinfo(skb
)->gso_segs
;
7316 first
->bytecount
+= (first
->gso_segs
- 1) * *hdr_len
;
7318 /* mss_l4len_id: use 0 as index for TSO */
7319 mss_l4len_idx
= (*hdr_len
- l4_offset
) << IXGBE_ADVTXD_L4LEN_SHIFT
;
7320 mss_l4len_idx
|= skb_shinfo(skb
)->gso_size
<< IXGBE_ADVTXD_MSS_SHIFT
;
7322 /* vlan_macip_lens: HEADLEN, MACLEN, VLAN tag */
7323 vlan_macip_lens
= l4
.hdr
- ip
.hdr
;
7324 vlan_macip_lens
|= (ip
.hdr
- skb
->data
) << IXGBE_ADVTXD_MACLEN_SHIFT
;
7325 vlan_macip_lens
|= first
->tx_flags
& IXGBE_TX_FLAGS_VLAN_MASK
;
7327 ixgbe_tx_ctxtdesc(tx_ring
, vlan_macip_lens
, 0, type_tucmd
,
7333 static inline bool ixgbe_ipv6_csum_is_sctp(struct sk_buff
*skb
)
7335 unsigned int offset
= 0;
7337 ipv6_find_hdr(skb
, &offset
, IPPROTO_SCTP
, NULL
, NULL
);
7339 return offset
== skb_checksum_start_offset(skb
);
7342 static void ixgbe_tx_csum(struct ixgbe_ring
*tx_ring
,
7343 struct ixgbe_tx_buffer
*first
)
7345 struct sk_buff
*skb
= first
->skb
;
7346 u32 vlan_macip_lens
= 0;
7349 if (skb
->ip_summed
!= CHECKSUM_PARTIAL
) {
7351 if (!(first
->tx_flags
& (IXGBE_TX_FLAGS_HW_VLAN
|
7352 IXGBE_TX_FLAGS_CC
)))
7357 switch (skb
->csum_offset
) {
7358 case offsetof(struct tcphdr
, check
):
7359 type_tucmd
= IXGBE_ADVTXD_TUCMD_L4T_TCP
;
7361 case offsetof(struct udphdr
, check
):
7363 case offsetof(struct sctphdr
, checksum
):
7364 /* validate that this is actually an SCTP request */
7365 if (((first
->protocol
== htons(ETH_P_IP
)) &&
7366 (ip_hdr(skb
)->protocol
== IPPROTO_SCTP
)) ||
7367 ((first
->protocol
== htons(ETH_P_IPV6
)) &&
7368 ixgbe_ipv6_csum_is_sctp(skb
))) {
7369 type_tucmd
= IXGBE_ADVTXD_TUCMD_L4T_SCTP
;
7374 skb_checksum_help(skb
);
7378 /* update TX checksum flag */
7379 first
->tx_flags
|= IXGBE_TX_FLAGS_CSUM
;
7380 vlan_macip_lens
= skb_checksum_start_offset(skb
) -
7381 skb_network_offset(skb
);
7383 /* vlan_macip_lens: MACLEN, VLAN tag */
7384 vlan_macip_lens
|= skb_network_offset(skb
) << IXGBE_ADVTXD_MACLEN_SHIFT
;
7385 vlan_macip_lens
|= first
->tx_flags
& IXGBE_TX_FLAGS_VLAN_MASK
;
7387 ixgbe_tx_ctxtdesc(tx_ring
, vlan_macip_lens
, 0, type_tucmd
, 0);
7390 #define IXGBE_SET_FLAG(_input, _flag, _result) \
7391 ((_flag <= _result) ? \
7392 ((u32)(_input & _flag) * (_result / _flag)) : \
7393 ((u32)(_input & _flag) / (_flag / _result)))
7395 static u32
ixgbe_tx_cmd_type(struct sk_buff
*skb
, u32 tx_flags
)
7397 /* set type for advanced descriptor with frame checksum insertion */
7398 u32 cmd_type
= IXGBE_ADVTXD_DTYP_DATA
|
7399 IXGBE_ADVTXD_DCMD_DEXT
|
7400 IXGBE_ADVTXD_DCMD_IFCS
;
7402 /* set HW vlan bit if vlan is present */
7403 cmd_type
|= IXGBE_SET_FLAG(tx_flags
, IXGBE_TX_FLAGS_HW_VLAN
,
7404 IXGBE_ADVTXD_DCMD_VLE
);
7406 /* set segmentation enable bits for TSO/FSO */
7407 cmd_type
|= IXGBE_SET_FLAG(tx_flags
, IXGBE_TX_FLAGS_TSO
,
7408 IXGBE_ADVTXD_DCMD_TSE
);
7410 /* set timestamp bit if present */
7411 cmd_type
|= IXGBE_SET_FLAG(tx_flags
, IXGBE_TX_FLAGS_TSTAMP
,
7412 IXGBE_ADVTXD_MAC_TSTAMP
);
7414 /* insert frame checksum */
7415 cmd_type
^= IXGBE_SET_FLAG(skb
->no_fcs
, 1, IXGBE_ADVTXD_DCMD_IFCS
);
7420 static void ixgbe_tx_olinfo_status(union ixgbe_adv_tx_desc
*tx_desc
,
7421 u32 tx_flags
, unsigned int paylen
)
7423 u32 olinfo_status
= paylen
<< IXGBE_ADVTXD_PAYLEN_SHIFT
;
7425 /* enable L4 checksum for TSO and TX checksum offload */
7426 olinfo_status
|= IXGBE_SET_FLAG(tx_flags
,
7427 IXGBE_TX_FLAGS_CSUM
,
7428 IXGBE_ADVTXD_POPTS_TXSM
);
7430 /* enble IPv4 checksum for TSO */
7431 olinfo_status
|= IXGBE_SET_FLAG(tx_flags
,
7432 IXGBE_TX_FLAGS_IPV4
,
7433 IXGBE_ADVTXD_POPTS_IXSM
);
7436 * Check Context must be set if Tx switch is enabled, which it
7437 * always is for case where virtual functions are running
7439 olinfo_status
|= IXGBE_SET_FLAG(tx_flags
,
7443 tx_desc
->read
.olinfo_status
= cpu_to_le32(olinfo_status
);
7446 static int __ixgbe_maybe_stop_tx(struct ixgbe_ring
*tx_ring
, u16 size
)
7448 netif_stop_subqueue(tx_ring
->netdev
, tx_ring
->queue_index
);
7450 /* Herbert's original patch had:
7451 * smp_mb__after_netif_stop_queue();
7452 * but since that doesn't exist yet, just open code it.
7456 /* We need to check again in a case another CPU has just
7457 * made room available.
7459 if (likely(ixgbe_desc_unused(tx_ring
) < size
))
7462 /* A reprieve! - use start_queue because it doesn't call schedule */
7463 netif_start_subqueue(tx_ring
->netdev
, tx_ring
->queue_index
);
7464 ++tx_ring
->tx_stats
.restart_queue
;
7468 static inline int ixgbe_maybe_stop_tx(struct ixgbe_ring
*tx_ring
, u16 size
)
7470 if (likely(ixgbe_desc_unused(tx_ring
) >= size
))
7473 return __ixgbe_maybe_stop_tx(tx_ring
, size
);
7476 #define IXGBE_TXD_CMD (IXGBE_TXD_CMD_EOP | \
7479 static void ixgbe_tx_map(struct ixgbe_ring
*tx_ring
,
7480 struct ixgbe_tx_buffer
*first
,
7483 struct sk_buff
*skb
= first
->skb
;
7484 struct ixgbe_tx_buffer
*tx_buffer
;
7485 union ixgbe_adv_tx_desc
*tx_desc
;
7486 struct skb_frag_struct
*frag
;
7488 unsigned int data_len
, size
;
7489 u32 tx_flags
= first
->tx_flags
;
7490 u32 cmd_type
= ixgbe_tx_cmd_type(skb
, tx_flags
);
7491 u16 i
= tx_ring
->next_to_use
;
7493 tx_desc
= IXGBE_TX_DESC(tx_ring
, i
);
7495 ixgbe_tx_olinfo_status(tx_desc
, tx_flags
, skb
->len
- hdr_len
);
7497 size
= skb_headlen(skb
);
7498 data_len
= skb
->data_len
;
7501 if (tx_flags
& IXGBE_TX_FLAGS_FCOE
) {
7502 if (data_len
< sizeof(struct fcoe_crc_eof
)) {
7503 size
-= sizeof(struct fcoe_crc_eof
) - data_len
;
7506 data_len
-= sizeof(struct fcoe_crc_eof
);
7511 dma
= dma_map_single(tx_ring
->dev
, skb
->data
, size
, DMA_TO_DEVICE
);
7515 for (frag
= &skb_shinfo(skb
)->frags
[0];; frag
++) {
7516 if (dma_mapping_error(tx_ring
->dev
, dma
))
7519 /* record length, and DMA address */
7520 dma_unmap_len_set(tx_buffer
, len
, size
);
7521 dma_unmap_addr_set(tx_buffer
, dma
, dma
);
7523 tx_desc
->read
.buffer_addr
= cpu_to_le64(dma
);
7525 while (unlikely(size
> IXGBE_MAX_DATA_PER_TXD
)) {
7526 tx_desc
->read
.cmd_type_len
=
7527 cpu_to_le32(cmd_type
^ IXGBE_MAX_DATA_PER_TXD
);
7531 if (i
== tx_ring
->count
) {
7532 tx_desc
= IXGBE_TX_DESC(tx_ring
, 0);
7535 tx_desc
->read
.olinfo_status
= 0;
7537 dma
+= IXGBE_MAX_DATA_PER_TXD
;
7538 size
-= IXGBE_MAX_DATA_PER_TXD
;
7540 tx_desc
->read
.buffer_addr
= cpu_to_le64(dma
);
7543 if (likely(!data_len
))
7546 tx_desc
->read
.cmd_type_len
= cpu_to_le32(cmd_type
^ size
);
7550 if (i
== tx_ring
->count
) {
7551 tx_desc
= IXGBE_TX_DESC(tx_ring
, 0);
7554 tx_desc
->read
.olinfo_status
= 0;
7557 size
= min_t(unsigned int, data_len
, skb_frag_size(frag
));
7559 size
= skb_frag_size(frag
);
7563 dma
= skb_frag_dma_map(tx_ring
->dev
, frag
, 0, size
,
7566 tx_buffer
= &tx_ring
->tx_buffer_info
[i
];
7569 /* write last descriptor with RS and EOP bits */
7570 cmd_type
|= size
| IXGBE_TXD_CMD
;
7571 tx_desc
->read
.cmd_type_len
= cpu_to_le32(cmd_type
);
7573 netdev_tx_sent_queue(txring_txq(tx_ring
), first
->bytecount
);
7575 /* set the timestamp */
7576 first
->time_stamp
= jiffies
;
7579 * Force memory writes to complete before letting h/w know there
7580 * are new descriptors to fetch. (Only applicable for weak-ordered
7581 * memory model archs, such as IA-64).
7583 * We also need this memory barrier to make certain all of the
7584 * status bits have been updated before next_to_watch is written.
7588 /* set next_to_watch value indicating a packet is present */
7589 first
->next_to_watch
= tx_desc
;
7592 if (i
== tx_ring
->count
)
7595 tx_ring
->next_to_use
= i
;
7597 ixgbe_maybe_stop_tx(tx_ring
, DESC_NEEDED
);
7599 if (netif_xmit_stopped(txring_txq(tx_ring
)) || !skb
->xmit_more
) {
7600 writel(i
, tx_ring
->tail
);
7602 /* we need this if more than one processor can write to our tail
7603 * at a time, it synchronizes IO on IA64/Altix systems
7610 dev_err(tx_ring
->dev
, "TX DMA map failed\n");
7612 /* clear dma mappings for failed tx_buffer_info map */
7614 tx_buffer
= &tx_ring
->tx_buffer_info
[i
];
7615 ixgbe_unmap_and_free_tx_resource(tx_ring
, tx_buffer
);
7616 if (tx_buffer
== first
)
7623 tx_ring
->next_to_use
= i
;
7626 static void ixgbe_atr(struct ixgbe_ring
*ring
,
7627 struct ixgbe_tx_buffer
*first
)
7629 struct ixgbe_q_vector
*q_vector
= ring
->q_vector
;
7630 union ixgbe_atr_hash_dword input
= { .dword
= 0 };
7631 union ixgbe_atr_hash_dword common
= { .dword
= 0 };
7633 unsigned char *network
;
7635 struct ipv6hdr
*ipv6
;
7639 struct sk_buff
*skb
;
7643 /* if ring doesn't have a interrupt vector, cannot perform ATR */
7647 /* do nothing if sampling is disabled */
7648 if (!ring
->atr_sample_rate
)
7653 /* currently only IPv4/IPv6 with TCP is supported */
7654 if ((first
->protocol
!= htons(ETH_P_IP
)) &&
7655 (first
->protocol
!= htons(ETH_P_IPV6
)))
7658 /* snag network header to get L4 type and address */
7660 hdr
.network
= skb_network_header(skb
);
7661 if (skb
->encapsulation
&&
7662 first
->protocol
== htons(ETH_P_IP
) &&
7663 hdr
.ipv4
->protocol
!= IPPROTO_UDP
) {
7664 struct ixgbe_adapter
*adapter
= q_vector
->adapter
;
7666 /* verify the port is recognized as VXLAN */
7667 if (adapter
->vxlan_port
&&
7668 udp_hdr(skb
)->dest
== adapter
->vxlan_port
)
7669 hdr
.network
= skb_inner_network_header(skb
);
7672 /* Currently only IPv4/IPv6 with TCP is supported */
7673 switch (hdr
.ipv4
->version
) {
7675 /* access ihl as u8 to avoid unaligned access on ia64 */
7676 hlen
= (hdr
.network
[0] & 0x0F) << 2;
7677 l4_proto
= hdr
.ipv4
->protocol
;
7680 hlen
= hdr
.network
- skb
->data
;
7681 l4_proto
= ipv6_find_hdr(skb
, &hlen
, IPPROTO_TCP
, NULL
, NULL
);
7682 hlen
-= hdr
.network
- skb
->data
;
7688 if (l4_proto
!= IPPROTO_TCP
)
7691 th
= (struct tcphdr
*)(hdr
.network
+ hlen
);
7693 /* skip this packet since the socket is closing */
7697 /* sample on all syn packets or once every atr sample count */
7698 if (!th
->syn
&& (ring
->atr_count
< ring
->atr_sample_rate
))
7701 /* reset sample count */
7702 ring
->atr_count
= 0;
7704 vlan_id
= htons(first
->tx_flags
>> IXGBE_TX_FLAGS_VLAN_SHIFT
);
7707 * src and dst are inverted, think how the receiver sees them
7709 * The input is broken into two sections, a non-compressed section
7710 * containing vm_pool, vlan_id, and flow_type. The rest of the data
7711 * is XORed together and stored in the compressed dword.
7713 input
.formatted
.vlan_id
= vlan_id
;
7716 * since src port and flex bytes occupy the same word XOR them together
7717 * and write the value to source port portion of compressed dword
7719 if (first
->tx_flags
& (IXGBE_TX_FLAGS_SW_VLAN
| IXGBE_TX_FLAGS_HW_VLAN
))
7720 common
.port
.src
^= th
->dest
^ htons(ETH_P_8021Q
);
7722 common
.port
.src
^= th
->dest
^ first
->protocol
;
7723 common
.port
.dst
^= th
->source
;
7725 switch (hdr
.ipv4
->version
) {
7727 input
.formatted
.flow_type
= IXGBE_ATR_FLOW_TYPE_TCPV4
;
7728 common
.ip
^= hdr
.ipv4
->saddr
^ hdr
.ipv4
->daddr
;
7731 input
.formatted
.flow_type
= IXGBE_ATR_FLOW_TYPE_TCPV6
;
7732 common
.ip
^= hdr
.ipv6
->saddr
.s6_addr32
[0] ^
7733 hdr
.ipv6
->saddr
.s6_addr32
[1] ^
7734 hdr
.ipv6
->saddr
.s6_addr32
[2] ^
7735 hdr
.ipv6
->saddr
.s6_addr32
[3] ^
7736 hdr
.ipv6
->daddr
.s6_addr32
[0] ^
7737 hdr
.ipv6
->daddr
.s6_addr32
[1] ^
7738 hdr
.ipv6
->daddr
.s6_addr32
[2] ^
7739 hdr
.ipv6
->daddr
.s6_addr32
[3];
7745 if (hdr
.network
!= skb_network_header(skb
))
7746 input
.formatted
.flow_type
|= IXGBE_ATR_L4TYPE_TUNNEL_MASK
;
7748 /* This assumes the Rx queue and Tx queue are bound to the same CPU */
7749 ixgbe_fdir_add_signature_filter_82599(&q_vector
->adapter
->hw
,
7750 input
, common
, ring
->queue_index
);
7753 static u16
ixgbe_select_queue(struct net_device
*dev
, struct sk_buff
*skb
,
7754 void *accel_priv
, select_queue_fallback_t fallback
)
7756 struct ixgbe_fwd_adapter
*fwd_adapter
= accel_priv
;
7758 struct ixgbe_adapter
*adapter
;
7759 struct ixgbe_ring_feature
*f
;
7764 return skb
->queue_mapping
+ fwd_adapter
->tx_base_queue
;
7769 * only execute the code below if protocol is FCoE
7770 * or FIP and we have FCoE enabled on the adapter
7772 switch (vlan_get_protocol(skb
)) {
7773 case htons(ETH_P_FCOE
):
7774 case htons(ETH_P_FIP
):
7775 adapter
= netdev_priv(dev
);
7777 if (adapter
->flags
& IXGBE_FLAG_FCOE_ENABLED
)
7780 return fallback(dev
, skb
);
7783 f
= &adapter
->ring_feature
[RING_F_FCOE
];
7785 txq
= skb_rx_queue_recorded(skb
) ? skb_get_rx_queue(skb
) :
7788 while (txq
>= f
->indices
)
7791 return txq
+ f
->offset
;
7793 return fallback(dev
, skb
);
7797 netdev_tx_t
ixgbe_xmit_frame_ring(struct sk_buff
*skb
,
7798 struct ixgbe_adapter
*adapter
,
7799 struct ixgbe_ring
*tx_ring
)
7801 struct ixgbe_tx_buffer
*first
;
7805 u16 count
= TXD_USE_COUNT(skb_headlen(skb
));
7806 __be16 protocol
= skb
->protocol
;
7810 * need: 1 descriptor per page * PAGE_SIZE/IXGBE_MAX_DATA_PER_TXD,
7811 * + 1 desc for skb_headlen/IXGBE_MAX_DATA_PER_TXD,
7812 * + 2 desc gap to keep tail from touching head,
7813 * + 1 desc for context descriptor,
7814 * otherwise try next time
7816 for (f
= 0; f
< skb_shinfo(skb
)->nr_frags
; f
++)
7817 count
+= TXD_USE_COUNT(skb_shinfo(skb
)->frags
[f
].size
);
7819 if (ixgbe_maybe_stop_tx(tx_ring
, count
+ 3)) {
7820 tx_ring
->tx_stats
.tx_busy
++;
7821 return NETDEV_TX_BUSY
;
7824 /* record the location of the first descriptor for this packet */
7825 first
= &tx_ring
->tx_buffer_info
[tx_ring
->next_to_use
];
7827 first
->bytecount
= skb
->len
;
7828 first
->gso_segs
= 1;
7830 /* if we have a HW VLAN tag being added default to the HW one */
7831 if (skb_vlan_tag_present(skb
)) {
7832 tx_flags
|= skb_vlan_tag_get(skb
) << IXGBE_TX_FLAGS_VLAN_SHIFT
;
7833 tx_flags
|= IXGBE_TX_FLAGS_HW_VLAN
;
7834 /* else if it is a SW VLAN check the next protocol and store the tag */
7835 } else if (protocol
== htons(ETH_P_8021Q
)) {
7836 struct vlan_hdr
*vhdr
, _vhdr
;
7837 vhdr
= skb_header_pointer(skb
, ETH_HLEN
, sizeof(_vhdr
), &_vhdr
);
7841 tx_flags
|= ntohs(vhdr
->h_vlan_TCI
) <<
7842 IXGBE_TX_FLAGS_VLAN_SHIFT
;
7843 tx_flags
|= IXGBE_TX_FLAGS_SW_VLAN
;
7845 protocol
= vlan_get_protocol(skb
);
7847 if (unlikely(skb_shinfo(skb
)->tx_flags
& SKBTX_HW_TSTAMP
) &&
7848 adapter
->ptp_clock
&&
7849 !test_and_set_bit_lock(__IXGBE_PTP_TX_IN_PROGRESS
,
7851 skb_shinfo(skb
)->tx_flags
|= SKBTX_IN_PROGRESS
;
7852 tx_flags
|= IXGBE_TX_FLAGS_TSTAMP
;
7854 /* schedule check for Tx timestamp */
7855 adapter
->ptp_tx_skb
= skb_get(skb
);
7856 adapter
->ptp_tx_start
= jiffies
;
7857 schedule_work(&adapter
->ptp_tx_work
);
7860 skb_tx_timestamp(skb
);
7862 #ifdef CONFIG_PCI_IOV
7864 * Use the l2switch_enable flag - would be false if the DMA
7865 * Tx switch had been disabled.
7867 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
)
7868 tx_flags
|= IXGBE_TX_FLAGS_CC
;
7871 /* DCB maps skb priorities 0-7 onto 3 bit PCP of VLAN tag. */
7872 if ((adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) &&
7873 ((tx_flags
& (IXGBE_TX_FLAGS_HW_VLAN
| IXGBE_TX_FLAGS_SW_VLAN
)) ||
7874 (skb
->priority
!= TC_PRIO_CONTROL
))) {
7875 tx_flags
&= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK
;
7876 tx_flags
|= (skb
->priority
& 0x7) <<
7877 IXGBE_TX_FLAGS_VLAN_PRIO_SHIFT
;
7878 if (tx_flags
& IXGBE_TX_FLAGS_SW_VLAN
) {
7879 struct vlan_ethhdr
*vhdr
;
7881 if (skb_cow_head(skb
, 0))
7883 vhdr
= (struct vlan_ethhdr
*)skb
->data
;
7884 vhdr
->h_vlan_TCI
= htons(tx_flags
>>
7885 IXGBE_TX_FLAGS_VLAN_SHIFT
);
7887 tx_flags
|= IXGBE_TX_FLAGS_HW_VLAN
;
7891 /* record initial flags and protocol */
7892 first
->tx_flags
= tx_flags
;
7893 first
->protocol
= protocol
;
7896 /* setup tx offload for FCoE */
7897 if ((protocol
== htons(ETH_P_FCOE
)) &&
7898 (tx_ring
->netdev
->features
& (NETIF_F_FSO
| NETIF_F_FCOE_CRC
))) {
7899 tso
= ixgbe_fso(tx_ring
, first
, &hdr_len
);
7906 #endif /* IXGBE_FCOE */
7907 tso
= ixgbe_tso(tx_ring
, first
, &hdr_len
);
7911 ixgbe_tx_csum(tx_ring
, first
);
7913 /* add the ATR filter if ATR is on */
7914 if (test_bit(__IXGBE_TX_FDIR_INIT_DONE
, &tx_ring
->state
))
7915 ixgbe_atr(tx_ring
, first
);
7919 #endif /* IXGBE_FCOE */
7920 ixgbe_tx_map(tx_ring
, first
, hdr_len
);
7922 return NETDEV_TX_OK
;
7925 dev_kfree_skb_any(first
->skb
);
7928 return NETDEV_TX_OK
;
7931 static netdev_tx_t
__ixgbe_xmit_frame(struct sk_buff
*skb
,
7932 struct net_device
*netdev
,
7933 struct ixgbe_ring
*ring
)
7935 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
7936 struct ixgbe_ring
*tx_ring
;
7939 * The minimum packet size for olinfo paylen is 17 so pad the skb
7940 * in order to meet this minimum size requirement.
7942 if (skb_put_padto(skb
, 17))
7943 return NETDEV_TX_OK
;
7945 tx_ring
= ring
? ring
: adapter
->tx_ring
[skb
->queue_mapping
];
7947 return ixgbe_xmit_frame_ring(skb
, adapter
, tx_ring
);
7950 static netdev_tx_t
ixgbe_xmit_frame(struct sk_buff
*skb
,
7951 struct net_device
*netdev
)
7953 return __ixgbe_xmit_frame(skb
, netdev
, NULL
);
7957 * ixgbe_set_mac - Change the Ethernet Address of the NIC
7958 * @netdev: network interface device structure
7959 * @p: pointer to an address structure
7961 * Returns 0 on success, negative on failure
7963 static int ixgbe_set_mac(struct net_device
*netdev
, void *p
)
7965 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
7966 struct ixgbe_hw
*hw
= &adapter
->hw
;
7967 struct sockaddr
*addr
= p
;
7969 if (!is_valid_ether_addr(addr
->sa_data
))
7970 return -EADDRNOTAVAIL
;
7972 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
7973 memcpy(hw
->mac
.addr
, addr
->sa_data
, netdev
->addr_len
);
7975 ixgbe_mac_set_default_filter(adapter
);
7981 ixgbe_mdio_read(struct net_device
*netdev
, int prtad
, int devad
, u16 addr
)
7983 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
7984 struct ixgbe_hw
*hw
= &adapter
->hw
;
7988 if (prtad
!= hw
->phy
.mdio
.prtad
)
7990 rc
= hw
->phy
.ops
.read_reg(hw
, addr
, devad
, &value
);
7996 static int ixgbe_mdio_write(struct net_device
*netdev
, int prtad
, int devad
,
7997 u16 addr
, u16 value
)
7999 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
8000 struct ixgbe_hw
*hw
= &adapter
->hw
;
8002 if (prtad
!= hw
->phy
.mdio
.prtad
)
8004 return hw
->phy
.ops
.write_reg(hw
, addr
, devad
, value
);
8007 static int ixgbe_ioctl(struct net_device
*netdev
, struct ifreq
*req
, int cmd
)
8009 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
8013 return ixgbe_ptp_set_ts_config(adapter
, req
);
8015 return ixgbe_ptp_get_ts_config(adapter
, req
);
8017 return mdio_mii_ioctl(&adapter
->hw
.phy
.mdio
, if_mii(req
), cmd
);
8022 * ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding
8024 * @netdev: network interface device structure
8026 * Returns non-zero on failure
8028 static int ixgbe_add_sanmac_netdev(struct net_device
*dev
)
8031 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
8032 struct ixgbe_hw
*hw
= &adapter
->hw
;
8034 if (is_valid_ether_addr(hw
->mac
.san_addr
)) {
8036 err
= dev_addr_add(dev
, hw
->mac
.san_addr
, NETDEV_HW_ADDR_T_SAN
);
8039 /* update SAN MAC vmdq pool selection */
8040 hw
->mac
.ops
.set_vmdq_san_mac(hw
, VMDQ_P(0));
8046 * ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding
8048 * @netdev: network interface device structure
8050 * Returns non-zero on failure
8052 static int ixgbe_del_sanmac_netdev(struct net_device
*dev
)
8055 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
8056 struct ixgbe_mac_info
*mac
= &adapter
->hw
.mac
;
8058 if (is_valid_ether_addr(mac
->san_addr
)) {
8060 err
= dev_addr_del(dev
, mac
->san_addr
, NETDEV_HW_ADDR_T_SAN
);
8066 #ifdef CONFIG_NET_POLL_CONTROLLER
8068 * Polling 'interrupt' - used by things like netconsole to send skbs
8069 * without having to re-enable interrupts. It's not called while
8070 * the interrupt routine is executing.
8072 static void ixgbe_netpoll(struct net_device
*netdev
)
8074 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
8077 /* if interface is down do nothing */
8078 if (test_bit(__IXGBE_DOWN
, &adapter
->state
))
8081 /* loop through and schedule all active queues */
8082 for (i
= 0; i
< adapter
->num_q_vectors
; i
++)
8083 ixgbe_msix_clean_rings(0, adapter
->q_vector
[i
]);
8087 static struct rtnl_link_stats64
*ixgbe_get_stats64(struct net_device
*netdev
,
8088 struct rtnl_link_stats64
*stats
)
8090 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
8094 for (i
= 0; i
< adapter
->num_rx_queues
; i
++) {
8095 struct ixgbe_ring
*ring
= ACCESS_ONCE(adapter
->rx_ring
[i
]);
8101 start
= u64_stats_fetch_begin_irq(&ring
->syncp
);
8102 packets
= ring
->stats
.packets
;
8103 bytes
= ring
->stats
.bytes
;
8104 } while (u64_stats_fetch_retry_irq(&ring
->syncp
, start
));
8105 stats
->rx_packets
+= packets
;
8106 stats
->rx_bytes
+= bytes
;
8110 for (i
= 0; i
< adapter
->num_tx_queues
; i
++) {
8111 struct ixgbe_ring
*ring
= ACCESS_ONCE(adapter
->tx_ring
[i
]);
8117 start
= u64_stats_fetch_begin_irq(&ring
->syncp
);
8118 packets
= ring
->stats
.packets
;
8119 bytes
= ring
->stats
.bytes
;
8120 } while (u64_stats_fetch_retry_irq(&ring
->syncp
, start
));
8121 stats
->tx_packets
+= packets
;
8122 stats
->tx_bytes
+= bytes
;
8126 /* following stats updated by ixgbe_watchdog_task() */
8127 stats
->multicast
= netdev
->stats
.multicast
;
8128 stats
->rx_errors
= netdev
->stats
.rx_errors
;
8129 stats
->rx_length_errors
= netdev
->stats
.rx_length_errors
;
8130 stats
->rx_crc_errors
= netdev
->stats
.rx_crc_errors
;
8131 stats
->rx_missed_errors
= netdev
->stats
.rx_missed_errors
;
8135 #ifdef CONFIG_IXGBE_DCB
8137 * ixgbe_validate_rtr - verify 802.1Qp to Rx packet buffer mapping is valid.
8138 * @adapter: pointer to ixgbe_adapter
8139 * @tc: number of traffic classes currently enabled
8141 * Configure a valid 802.1Qp to Rx packet buffer mapping ie confirm
8142 * 802.1Q priority maps to a packet buffer that exists.
8144 static void ixgbe_validate_rtr(struct ixgbe_adapter
*adapter
, u8 tc
)
8146 struct ixgbe_hw
*hw
= &adapter
->hw
;
8150 /* 82598 have a static priority to TC mapping that can not
8151 * be changed so no validation is needed.
8153 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
8156 reg
= IXGBE_READ_REG(hw
, IXGBE_RTRUP2TC
);
8159 for (i
= 0; i
< MAX_TRAFFIC_CLASS
; i
++) {
8160 u8 up2tc
= reg
>> (i
* IXGBE_RTRUP2TC_UP_SHIFT
);
8162 /* If up2tc is out of bounds default to zero */
8164 reg
&= ~(0x7 << IXGBE_RTRUP2TC_UP_SHIFT
);
8168 IXGBE_WRITE_REG(hw
, IXGBE_RTRUP2TC
, reg
);
8174 * ixgbe_set_prio_tc_map - Configure netdev prio tc map
8175 * @adapter: Pointer to adapter struct
8177 * Populate the netdev user priority to tc map
8179 static void ixgbe_set_prio_tc_map(struct ixgbe_adapter
*adapter
)
8181 struct net_device
*dev
= adapter
->netdev
;
8182 struct ixgbe_dcb_config
*dcb_cfg
= &adapter
->dcb_cfg
;
8183 struct ieee_ets
*ets
= adapter
->ixgbe_ieee_ets
;
8186 for (prio
= 0; prio
< MAX_USER_PRIORITY
; prio
++) {
8189 if (adapter
->dcbx_cap
& DCB_CAP_DCBX_VER_CEE
)
8190 tc
= ixgbe_dcb_get_tc_from_up(dcb_cfg
, 0, prio
);
8192 tc
= ets
->prio_tc
[prio
];
8194 netdev_set_prio_tc_map(dev
, prio
, tc
);
8198 #endif /* CONFIG_IXGBE_DCB */
8200 * ixgbe_setup_tc - configure net_device for multiple traffic classes
8202 * @netdev: net device to configure
8203 * @tc: number of traffic classes to enable
8205 int ixgbe_setup_tc(struct net_device
*dev
, u8 tc
)
8207 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
8208 struct ixgbe_hw
*hw
= &adapter
->hw
;
8211 /* Hardware supports up to 8 traffic classes */
8212 if (tc
> adapter
->dcb_cfg
.num_tcs
.pg_tcs
)
8215 if (hw
->mac
.type
== ixgbe_mac_82598EB
&& tc
&& tc
< MAX_TRAFFIC_CLASS
)
8218 pools
= (find_first_zero_bit(&adapter
->fwd_bitmask
, 32) > 1);
8219 if (tc
&& pools
&& adapter
->num_rx_pools
> IXGBE_MAX_DCBMACVLANS
)
8222 /* Hardware has to reinitialize queues and interrupts to
8223 * match packet buffer alignment. Unfortunately, the
8224 * hardware is not flexible enough to do this dynamically.
8226 if (netif_running(dev
))
8229 ixgbe_reset(adapter
);
8231 ixgbe_clear_interrupt_scheme(adapter
);
8233 #ifdef CONFIG_IXGBE_DCB
8235 netdev_set_num_tc(dev
, tc
);
8236 ixgbe_set_prio_tc_map(adapter
);
8238 adapter
->flags
|= IXGBE_FLAG_DCB_ENABLED
;
8240 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
) {
8241 adapter
->last_lfc_mode
= adapter
->hw
.fc
.requested_mode
;
8242 adapter
->hw
.fc
.requested_mode
= ixgbe_fc_none
;
8245 netdev_reset_tc(dev
);
8247 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
)
8248 adapter
->hw
.fc
.requested_mode
= adapter
->last_lfc_mode
;
8250 adapter
->flags
&= ~IXGBE_FLAG_DCB_ENABLED
;
8252 adapter
->temp_dcb_cfg
.pfc_mode_enable
= false;
8253 adapter
->dcb_cfg
.pfc_mode_enable
= false;
8256 ixgbe_validate_rtr(adapter
, tc
);
8258 #endif /* CONFIG_IXGBE_DCB */
8259 ixgbe_init_interrupt_scheme(adapter
);
8261 if (netif_running(dev
))
8262 return ixgbe_open(dev
);
8267 static int ixgbe_delete_clsu32(struct ixgbe_adapter
*adapter
,
8268 struct tc_cls_u32_offload
*cls
)
8270 u32 hdl
= cls
->knode
.handle
;
8271 u32 uhtid
= TC_U32_USERHTID(cls
->knode
.handle
);
8272 u32 loc
= cls
->knode
.handle
& 0xfffff;
8274 struct ixgbe_jump_table
*jump
= NULL
;
8276 if (loc
> IXGBE_MAX_HW_ENTRIES
)
8279 if ((uhtid
!= 0x800) && (uhtid
>= IXGBE_MAX_LINK_HANDLE
))
8282 /* Clear this filter in the link data it is associated with */
8283 if (uhtid
!= 0x800) {
8284 jump
= adapter
->jump_tables
[uhtid
];
8287 if (!test_bit(loc
- 1, jump
->child_loc_map
))
8289 clear_bit(loc
- 1, jump
->child_loc_map
);
8292 /* Check if the filter being deleted is a link */
8293 for (i
= 1; i
< IXGBE_MAX_LINK_HANDLE
; i
++) {
8294 jump
= adapter
->jump_tables
[i
];
8295 if (jump
&& jump
->link_hdl
== hdl
) {
8296 /* Delete filters in the hardware in the child hash
8297 * table associated with this link
8299 for (j
= 0; j
< IXGBE_MAX_HW_ENTRIES
; j
++) {
8300 if (!test_bit(j
, jump
->child_loc_map
))
8302 spin_lock(&adapter
->fdir_perfect_lock
);
8303 err
= ixgbe_update_ethtool_fdir_entry(adapter
,
8306 spin_unlock(&adapter
->fdir_perfect_lock
);
8307 clear_bit(j
, jump
->child_loc_map
);
8309 /* Remove resources for this link */
8313 adapter
->jump_tables
[i
] = NULL
;
8318 spin_lock(&adapter
->fdir_perfect_lock
);
8319 err
= ixgbe_update_ethtool_fdir_entry(adapter
, NULL
, loc
);
8320 spin_unlock(&adapter
->fdir_perfect_lock
);
8324 static int ixgbe_configure_clsu32_add_hnode(struct ixgbe_adapter
*adapter
,
8326 struct tc_cls_u32_offload
*cls
)
8328 u32 uhtid
= TC_U32_USERHTID(cls
->hnode
.handle
);
8330 if (uhtid
>= IXGBE_MAX_LINK_HANDLE
)
8333 /* This ixgbe devices do not support hash tables at the moment
8334 * so abort when given hash tables.
8336 if (cls
->hnode
.divisor
> 0)
8339 set_bit(uhtid
- 1, &adapter
->tables
);
8343 static int ixgbe_configure_clsu32_del_hnode(struct ixgbe_adapter
*adapter
,
8344 struct tc_cls_u32_offload
*cls
)
8346 u32 uhtid
= TC_U32_USERHTID(cls
->hnode
.handle
);
8348 if (uhtid
>= IXGBE_MAX_LINK_HANDLE
)
8351 clear_bit(uhtid
- 1, &adapter
->tables
);
8355 #ifdef CONFIG_NET_CLS_ACT
8356 static int handle_redirect_action(struct ixgbe_adapter
*adapter
, int ifindex
,
8357 u8
*queue
, u64
*action
)
8359 unsigned int num_vfs
= adapter
->num_vfs
, vf
;
8360 struct net_device
*upper
;
8361 struct list_head
*iter
;
8363 /* redirect to a SRIOV VF */
8364 for (vf
= 0; vf
< num_vfs
; ++vf
) {
8365 upper
= pci_get_drvdata(adapter
->vfinfo
[vf
].vfdev
);
8366 if (upper
->ifindex
== ifindex
) {
8367 if (adapter
->num_rx_pools
> 1)
8370 *queue
= vf
* adapter
->num_rx_queues_per_pool
;
8373 *action
<<= ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF
;
8378 /* redirect to a offloaded macvlan netdev */
8379 netdev_for_each_all_upper_dev_rcu(adapter
->netdev
, upper
, iter
) {
8380 if (netif_is_macvlan(upper
)) {
8381 struct macvlan_dev
*dfwd
= netdev_priv(upper
);
8382 struct ixgbe_fwd_adapter
*vadapter
= dfwd
->fwd_priv
;
8384 if (vadapter
&& vadapter
->netdev
->ifindex
== ifindex
) {
8385 *queue
= adapter
->rx_ring
[vadapter
->rx_base_queue
]->reg_idx
;
8395 static int parse_tc_actions(struct ixgbe_adapter
*adapter
,
8396 struct tcf_exts
*exts
, u64
*action
, u8
*queue
)
8398 const struct tc_action
*a
;
8402 if (tc_no_actions(exts
))
8405 tcf_exts_to_list(exts
, &actions
);
8406 list_for_each_entry(a
, &actions
, list
) {
8409 if (is_tcf_gact_shot(a
)) {
8410 *action
= IXGBE_FDIR_DROP_QUEUE
;
8411 *queue
= IXGBE_FDIR_DROP_QUEUE
;
8415 /* Redirect to a VF or a offloaded macvlan */
8416 if (is_tcf_mirred_redirect(a
)) {
8417 int ifindex
= tcf_mirred_ifindex(a
);
8419 err
= handle_redirect_action(adapter
, ifindex
, queue
,
8429 static int parse_tc_actions(struct ixgbe_adapter
*adapter
,
8430 struct tcf_exts
*exts
, u64
*action
, u8
*queue
)
8434 #endif /* CONFIG_NET_CLS_ACT */
8436 static int ixgbe_clsu32_build_input(struct ixgbe_fdir_filter
*input
,
8437 union ixgbe_atr_input
*mask
,
8438 struct tc_cls_u32_offload
*cls
,
8439 struct ixgbe_mat_field
*field_ptr
,
8440 struct ixgbe_nexthdr
*nexthdr
)
8444 bool found_entry
= false, found_jump_field
= false;
8446 for (i
= 0; i
< cls
->knode
.sel
->nkeys
; i
++) {
8447 off
= cls
->knode
.sel
->keys
[i
].off
;
8448 val
= cls
->knode
.sel
->keys
[i
].val
;
8449 m
= cls
->knode
.sel
->keys
[i
].mask
;
8451 for (j
= 0; field_ptr
[j
].val
; j
++) {
8452 if (field_ptr
[j
].off
== off
) {
8453 field_ptr
[j
].val(input
, mask
, val
, m
);
8454 input
->filter
.formatted
.flow_type
|=
8461 if (nexthdr
->off
== cls
->knode
.sel
->keys
[i
].off
&&
8462 nexthdr
->val
== cls
->knode
.sel
->keys
[i
].val
&&
8463 nexthdr
->mask
== cls
->knode
.sel
->keys
[i
].mask
)
8464 found_jump_field
= true;
8470 if (nexthdr
&& !found_jump_field
)
8476 mask
->formatted
.flow_type
= IXGBE_ATR_L4TYPE_IPV6_MASK
|
8477 IXGBE_ATR_L4TYPE_MASK
;
8479 if (input
->filter
.formatted
.flow_type
== IXGBE_ATR_FLOW_TYPE_IPV4
)
8480 mask
->formatted
.flow_type
&= IXGBE_ATR_L4TYPE_IPV6_MASK
;
8485 static int ixgbe_configure_clsu32(struct ixgbe_adapter
*adapter
,
8487 struct tc_cls_u32_offload
*cls
)
8489 u32 loc
= cls
->knode
.handle
& 0xfffff;
8490 struct ixgbe_hw
*hw
= &adapter
->hw
;
8491 struct ixgbe_mat_field
*field_ptr
;
8492 struct ixgbe_fdir_filter
*input
= NULL
;
8493 union ixgbe_atr_input
*mask
= NULL
;
8494 struct ixgbe_jump_table
*jump
= NULL
;
8495 int i
, err
= -EINVAL
;
8497 u32 uhtid
, link_uhtid
;
8499 uhtid
= TC_U32_USERHTID(cls
->knode
.handle
);
8500 link_uhtid
= TC_U32_USERHTID(cls
->knode
.link_handle
);
8502 /* At the moment cls_u32 jumps to network layer and skips past
8503 * L2 headers. The canonical method to match L2 frames is to use
8504 * negative values. However this is error prone at best but really
8505 * just broken because there is no way to "know" what sort of hdr
8506 * is in front of the network layer. Fix cls_u32 to support L2
8507 * headers when needed.
8509 if (protocol
!= htons(ETH_P_IP
))
8512 if (loc
>= ((1024 << adapter
->fdir_pballoc
) - 2)) {
8513 e_err(drv
, "Location out of range\n");
8517 /* cls u32 is a graph starting at root node 0x800. The driver tracks
8518 * links and also the fields used to advance the parser across each
8519 * link (e.g. nexthdr/eat parameters from 'tc'). This way we can map
8520 * the u32 graph onto the hardware parse graph denoted in ixgbe_model.h
8521 * To add support for new nodes update ixgbe_model.h parse structures
8522 * this function _should_ be generic try not to hardcode values here.
8524 if (uhtid
== 0x800) {
8525 field_ptr
= (adapter
->jump_tables
[0])->mat
;
8527 if (uhtid
>= IXGBE_MAX_LINK_HANDLE
)
8529 if (!adapter
->jump_tables
[uhtid
])
8531 field_ptr
= (adapter
->jump_tables
[uhtid
])->mat
;
8537 /* At this point we know the field_ptr is valid and need to either
8538 * build cls_u32 link or attach filter. Because adding a link to
8539 * a handle that does not exist is invalid and the same for adding
8540 * rules to handles that don't exist.
8544 struct ixgbe_nexthdr
*nexthdr
= ixgbe_ipv4_jumps
;
8546 if (link_uhtid
>= IXGBE_MAX_LINK_HANDLE
)
8549 if (!test_bit(link_uhtid
- 1, &adapter
->tables
))
8552 /* Multiple filters as links to the same hash table are not
8553 * supported. To add a new filter with the same next header
8554 * but different match/jump conditions, create a new hash table
8557 if (adapter
->jump_tables
[link_uhtid
] &&
8558 (adapter
->jump_tables
[link_uhtid
])->link_hdl
) {
8559 e_err(drv
, "Link filter exists for link: %x\n",
8564 for (i
= 0; nexthdr
[i
].jump
; i
++) {
8565 if (nexthdr
[i
].o
!= cls
->knode
.sel
->offoff
||
8566 nexthdr
[i
].s
!= cls
->knode
.sel
->offshift
||
8567 nexthdr
[i
].m
!= cls
->knode
.sel
->offmask
)
8570 jump
= kzalloc(sizeof(*jump
), GFP_KERNEL
);
8573 input
= kzalloc(sizeof(*input
), GFP_KERNEL
);
8578 mask
= kzalloc(sizeof(*mask
), GFP_KERNEL
);
8583 jump
->input
= input
;
8585 jump
->link_hdl
= cls
->knode
.handle
;
8587 err
= ixgbe_clsu32_build_input(input
, mask
, cls
,
8588 field_ptr
, &nexthdr
[i
]);
8590 jump
->mat
= nexthdr
[i
].jump
;
8591 adapter
->jump_tables
[link_uhtid
] = jump
;
8598 input
= kzalloc(sizeof(*input
), GFP_KERNEL
);
8601 mask
= kzalloc(sizeof(*mask
), GFP_KERNEL
);
8607 if ((uhtid
!= 0x800) && (adapter
->jump_tables
[uhtid
])) {
8608 if ((adapter
->jump_tables
[uhtid
])->input
)
8609 memcpy(input
, (adapter
->jump_tables
[uhtid
])->input
,
8611 if ((adapter
->jump_tables
[uhtid
])->mask
)
8612 memcpy(mask
, (adapter
->jump_tables
[uhtid
])->mask
,
8615 /* Lookup in all child hash tables if this location is already
8616 * filled with a filter
8618 for (i
= 1; i
< IXGBE_MAX_LINK_HANDLE
; i
++) {
8619 struct ixgbe_jump_table
*link
= adapter
->jump_tables
[i
];
8621 if (link
&& (test_bit(loc
- 1, link
->child_loc_map
))) {
8622 e_err(drv
, "Filter exists in location: %x\n",
8629 err
= ixgbe_clsu32_build_input(input
, mask
, cls
, field_ptr
, NULL
);
8633 err
= parse_tc_actions(adapter
, cls
->knode
.exts
, &input
->action
,
8638 input
->sw_idx
= loc
;
8640 spin_lock(&adapter
->fdir_perfect_lock
);
8642 if (hlist_empty(&adapter
->fdir_filter_list
)) {
8643 memcpy(&adapter
->fdir_mask
, mask
, sizeof(*mask
));
8644 err
= ixgbe_fdir_set_input_mask_82599(hw
, mask
);
8646 goto err_out_w_lock
;
8647 } else if (memcmp(&adapter
->fdir_mask
, mask
, sizeof(*mask
))) {
8649 goto err_out_w_lock
;
8652 ixgbe_atr_compute_perfect_hash_82599(&input
->filter
, mask
);
8653 err
= ixgbe_fdir_write_perfect_filter_82599(hw
, &input
->filter
,
8654 input
->sw_idx
, queue
);
8656 ixgbe_update_ethtool_fdir_entry(adapter
, input
, input
->sw_idx
);
8657 spin_unlock(&adapter
->fdir_perfect_lock
);
8659 if ((uhtid
!= 0x800) && (adapter
->jump_tables
[uhtid
]))
8660 set_bit(loc
- 1, (adapter
->jump_tables
[uhtid
])->child_loc_map
);
8665 spin_unlock(&adapter
->fdir_perfect_lock
);
8675 static int __ixgbe_setup_tc(struct net_device
*dev
, u32 handle
, __be16 proto
,
8676 struct tc_to_netdev
*tc
)
8678 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
8680 if (TC_H_MAJ(handle
) == TC_H_MAJ(TC_H_INGRESS
) &&
8681 tc
->type
== TC_SETUP_CLSU32
) {
8682 switch (tc
->cls_u32
->command
) {
8683 case TC_CLSU32_NEW_KNODE
:
8684 case TC_CLSU32_REPLACE_KNODE
:
8685 return ixgbe_configure_clsu32(adapter
,
8686 proto
, tc
->cls_u32
);
8687 case TC_CLSU32_DELETE_KNODE
:
8688 return ixgbe_delete_clsu32(adapter
, tc
->cls_u32
);
8689 case TC_CLSU32_NEW_HNODE
:
8690 case TC_CLSU32_REPLACE_HNODE
:
8691 return ixgbe_configure_clsu32_add_hnode(adapter
, proto
,
8693 case TC_CLSU32_DELETE_HNODE
:
8694 return ixgbe_configure_clsu32_del_hnode(adapter
,
8701 if (tc
->type
!= TC_SETUP_MQPRIO
)
8704 return ixgbe_setup_tc(dev
, tc
->tc
);
8707 #ifdef CONFIG_PCI_IOV
8708 void ixgbe_sriov_reinit(struct ixgbe_adapter
*adapter
)
8710 struct net_device
*netdev
= adapter
->netdev
;
8713 ixgbe_setup_tc(netdev
, netdev_get_num_tc(netdev
));
8718 void ixgbe_do_reset(struct net_device
*netdev
)
8720 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
8722 if (netif_running(netdev
))
8723 ixgbe_reinit_locked(adapter
);
8725 ixgbe_reset(adapter
);
8728 static netdev_features_t
ixgbe_fix_features(struct net_device
*netdev
,
8729 netdev_features_t features
)
8731 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
8733 /* If Rx checksum is disabled, then RSC/LRO should also be disabled */
8734 if (!(features
& NETIF_F_RXCSUM
))
8735 features
&= ~NETIF_F_LRO
;
8737 /* Turn off LRO if not RSC capable */
8738 if (!(adapter
->flags2
& IXGBE_FLAG2_RSC_CAPABLE
))
8739 features
&= ~NETIF_F_LRO
;
8744 static int ixgbe_set_features(struct net_device
*netdev
,
8745 netdev_features_t features
)
8747 struct ixgbe_adapter
*adapter
= netdev_priv(netdev
);
8748 netdev_features_t changed
= netdev
->features
^ features
;
8749 bool need_reset
= false;
8751 /* Make sure RSC matches LRO, reset if change */
8752 if (!(features
& NETIF_F_LRO
)) {
8753 if (adapter
->flags2
& IXGBE_FLAG2_RSC_ENABLED
)
8755 adapter
->flags2
&= ~IXGBE_FLAG2_RSC_ENABLED
;
8756 } else if ((adapter
->flags2
& IXGBE_FLAG2_RSC_CAPABLE
) &&
8757 !(adapter
->flags2
& IXGBE_FLAG2_RSC_ENABLED
)) {
8758 if (adapter
->rx_itr_setting
== 1 ||
8759 adapter
->rx_itr_setting
> IXGBE_MIN_RSC_ITR
) {
8760 adapter
->flags2
|= IXGBE_FLAG2_RSC_ENABLED
;
8762 } else if ((changed
^ features
) & NETIF_F_LRO
) {
8763 e_info(probe
, "rx-usecs set too low, "
8769 * Check if Flow Director n-tuple support or hw_tc support was
8770 * enabled or disabled. If the state changed, we need to reset.
8772 if ((features
& NETIF_F_NTUPLE
) || (features
& NETIF_F_HW_TC
)) {
8773 /* turn off ATR, enable perfect filters and reset */
8774 if (!(adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
))
8777 adapter
->flags
&= ~IXGBE_FLAG_FDIR_HASH_CAPABLE
;
8778 adapter
->flags
|= IXGBE_FLAG_FDIR_PERFECT_CAPABLE
;
8780 /* turn off perfect filters, enable ATR and reset */
8781 if (adapter
->flags
& IXGBE_FLAG_FDIR_PERFECT_CAPABLE
)
8784 adapter
->flags
&= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE
;
8786 /* We cannot enable ATR if SR-IOV is enabled */
8787 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
||
8788 /* We cannot enable ATR if we have 2 or more tcs */
8789 (netdev_get_num_tc(netdev
) > 1) ||
8790 /* We cannot enable ATR if RSS is disabled */
8791 (adapter
->ring_feature
[RING_F_RSS
].limit
<= 1) ||
8792 /* A sample rate of 0 indicates ATR disabled */
8793 (!adapter
->atr_sample_rate
))
8794 ; /* do nothing not supported */
8795 else /* otherwise supported and set the flag */
8796 adapter
->flags
|= IXGBE_FLAG_FDIR_HASH_CAPABLE
;
8799 if (changed
& NETIF_F_RXALL
)
8802 netdev
->features
= features
;
8804 if ((adapter
->flags
& IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE
)) {
8805 if (features
& NETIF_F_RXCSUM
)
8806 adapter
->flags2
|= IXGBE_FLAG2_VXLAN_REREG_NEEDED
;
8808 ixgbe_clear_vxlan_port(adapter
);
8812 ixgbe_do_reset(netdev
);
8813 else if (changed
& (NETIF_F_HW_VLAN_CTAG_RX
|
8814 NETIF_F_HW_VLAN_CTAG_FILTER
))
8815 ixgbe_set_rx_mode(netdev
);
8821 * ixgbe_add_vxlan_port - Get notifications about VXLAN ports that come up
8822 * @dev: The port's netdev
8823 * @ti: Tunnel endpoint information
8825 static void ixgbe_add_vxlan_port(struct net_device
*dev
,
8826 struct udp_tunnel_info
*ti
)
8828 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
8829 struct ixgbe_hw
*hw
= &adapter
->hw
;
8830 __be16 port
= ti
->port
;
8832 if (ti
->type
!= UDP_TUNNEL_TYPE_VXLAN
)
8835 if (ti
->sa_family
!= AF_INET
)
8838 if (!(adapter
->flags
& IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE
))
8841 if (adapter
->vxlan_port
== port
)
8844 if (adapter
->vxlan_port
) {
8846 "Hit Max num of VXLAN ports, not adding port %d\n",
8851 adapter
->vxlan_port
= port
;
8852 IXGBE_WRITE_REG(hw
, IXGBE_VXLANCTRL
, ntohs(port
));
8856 * ixgbe_del_vxlan_port - Get notifications about VXLAN ports that go away
8857 * @dev: The port's netdev
8858 * @ti: Tunnel endpoint information
8860 static void ixgbe_del_vxlan_port(struct net_device
*dev
,
8861 struct udp_tunnel_info
*ti
)
8863 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
8865 if (ti
->type
!= UDP_TUNNEL_TYPE_VXLAN
)
8868 if (ti
->sa_family
!= AF_INET
)
8871 if (!(adapter
->flags
& IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE
))
8874 if (adapter
->vxlan_port
!= ti
->port
) {
8875 netdev_info(dev
, "Port %d was not found, not deleting\n",
8880 ixgbe_clear_vxlan_port(adapter
);
8881 adapter
->flags2
|= IXGBE_FLAG2_VXLAN_REREG_NEEDED
;
8884 static int ixgbe_ndo_fdb_add(struct ndmsg
*ndm
, struct nlattr
*tb
[],
8885 struct net_device
*dev
,
8886 const unsigned char *addr
, u16 vid
,
8889 /* guarantee we can provide a unique filter for the unicast address */
8890 if (is_unicast_ether_addr(addr
) || is_link_local_ether_addr(addr
)) {
8891 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
8892 u16 pool
= VMDQ_P(0);
8894 if (netdev_uc_count(dev
) >= ixgbe_available_rars(adapter
, pool
))
8898 return ndo_dflt_fdb_add(ndm
, tb
, dev
, addr
, vid
, flags
);
8902 * ixgbe_configure_bridge_mode - set various bridge modes
8903 * @adapter - the private structure
8904 * @mode - requested bridge mode
8906 * Configure some settings require for various bridge modes.
8908 static int ixgbe_configure_bridge_mode(struct ixgbe_adapter
*adapter
,
8911 struct ixgbe_hw
*hw
= &adapter
->hw
;
8912 unsigned int p
, num_pools
;
8916 case BRIDGE_MODE_VEPA
:
8917 /* disable Tx loopback, rely on switch hairpin mode */
8918 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_PFDTXGSWC
, 0);
8920 /* must enable Rx switching replication to allow multicast
8921 * packet reception on all VFs, and to enable source address
8924 vmdctl
= IXGBE_READ_REG(hw
, IXGBE_VMD_CTL
);
8925 vmdctl
|= IXGBE_VT_CTL_REPLEN
;
8926 IXGBE_WRITE_REG(hw
, IXGBE_VMD_CTL
, vmdctl
);
8928 /* enable Rx source address pruning. Note, this requires
8929 * replication to be enabled or else it does nothing.
8931 num_pools
= adapter
->num_vfs
+ adapter
->num_rx_pools
;
8932 for (p
= 0; p
< num_pools
; p
++) {
8933 if (hw
->mac
.ops
.set_source_address_pruning
)
8934 hw
->mac
.ops
.set_source_address_pruning(hw
,
8939 case BRIDGE_MODE_VEB
:
8940 /* enable Tx loopback for internal VF/PF communication */
8941 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_PFDTXGSWC
,
8942 IXGBE_PFDTXGSWC_VT_LBEN
);
8944 /* disable Rx switching replication unless we have SR-IOV
8947 vmdctl
= IXGBE_READ_REG(hw
, IXGBE_VMD_CTL
);
8948 if (!adapter
->num_vfs
)
8949 vmdctl
&= ~IXGBE_VT_CTL_REPLEN
;
8950 IXGBE_WRITE_REG(hw
, IXGBE_VMD_CTL
, vmdctl
);
8952 /* disable Rx source address pruning, since we don't expect to
8953 * be receiving external loopback of our transmitted frames.
8955 num_pools
= adapter
->num_vfs
+ adapter
->num_rx_pools
;
8956 for (p
= 0; p
< num_pools
; p
++) {
8957 if (hw
->mac
.ops
.set_source_address_pruning
)
8958 hw
->mac
.ops
.set_source_address_pruning(hw
,
8967 adapter
->bridge_mode
= mode
;
8969 e_info(drv
, "enabling bridge mode: %s\n",
8970 mode
== BRIDGE_MODE_VEPA
? "VEPA" : "VEB");
8975 static int ixgbe_ndo_bridge_setlink(struct net_device
*dev
,
8976 struct nlmsghdr
*nlh
, u16 flags
)
8978 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
8979 struct nlattr
*attr
, *br_spec
;
8982 if (!(adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
))
8985 br_spec
= nlmsg_find_attr(nlh
, sizeof(struct ifinfomsg
), IFLA_AF_SPEC
);
8989 nla_for_each_nested(attr
, br_spec
, rem
) {
8993 if (nla_type(attr
) != IFLA_BRIDGE_MODE
)
8996 if (nla_len(attr
) < sizeof(mode
))
8999 mode
= nla_get_u16(attr
);
9000 status
= ixgbe_configure_bridge_mode(adapter
, mode
);
9010 static int ixgbe_ndo_bridge_getlink(struct sk_buff
*skb
, u32 pid
, u32 seq
,
9011 struct net_device
*dev
,
9012 u32 filter_mask
, int nlflags
)
9014 struct ixgbe_adapter
*adapter
= netdev_priv(dev
);
9016 if (!(adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
))
9019 return ndo_dflt_bridge_getlink(skb
, pid
, seq
, dev
,
9020 adapter
->bridge_mode
, 0, 0, nlflags
,
9024 static void *ixgbe_fwd_add(struct net_device
*pdev
, struct net_device
*vdev
)
9026 struct ixgbe_fwd_adapter
*fwd_adapter
= NULL
;
9027 struct ixgbe_adapter
*adapter
= netdev_priv(pdev
);
9028 int used_pools
= adapter
->num_vfs
+ adapter
->num_rx_pools
;
9032 /* Hardware has a limited number of available pools. Each VF, and the
9033 * PF require a pool. Check to ensure we don't attempt to use more
9034 * then the available number of pools.
9036 if (used_pools
>= IXGBE_MAX_VF_FUNCTIONS
)
9037 return ERR_PTR(-EINVAL
);
9040 if (vdev
->num_rx_queues
!= vdev
->num_tx_queues
) {
9041 netdev_info(pdev
, "%s: Only supports a single queue count for TX and RX\n",
9043 return ERR_PTR(-EINVAL
);
9046 /* Check for hardware restriction on number of rx/tx queues */
9047 if (vdev
->num_tx_queues
> IXGBE_MAX_L2A_QUEUES
||
9048 vdev
->num_tx_queues
== IXGBE_BAD_L2A_QUEUE
) {
9050 "%s: Supports RX/TX Queue counts 1,2, and 4\n",
9052 return ERR_PTR(-EINVAL
);
9055 if (((adapter
->flags
& IXGBE_FLAG_DCB_ENABLED
) &&
9056 adapter
->num_rx_pools
> IXGBE_MAX_DCBMACVLANS
- 1) ||
9057 (adapter
->num_rx_pools
> IXGBE_MAX_MACVLANS
))
9058 return ERR_PTR(-EBUSY
);
9060 fwd_adapter
= kzalloc(sizeof(*fwd_adapter
), GFP_KERNEL
);
9062 return ERR_PTR(-ENOMEM
);
9064 pool
= find_first_zero_bit(&adapter
->fwd_bitmask
, 32);
9065 adapter
->num_rx_pools
++;
9066 set_bit(pool
, &adapter
->fwd_bitmask
);
9067 limit
= find_last_bit(&adapter
->fwd_bitmask
, 32);
9069 /* Enable VMDq flag so device will be set in VM mode */
9070 adapter
->flags
|= IXGBE_FLAG_VMDQ_ENABLED
| IXGBE_FLAG_SRIOV_ENABLED
;
9071 adapter
->ring_feature
[RING_F_VMDQ
].limit
= limit
+ 1;
9072 adapter
->ring_feature
[RING_F_RSS
].limit
= vdev
->num_tx_queues
;
9074 /* Force reinit of ring allocation with VMDQ enabled */
9075 err
= ixgbe_setup_tc(pdev
, netdev_get_num_tc(pdev
));
9078 fwd_adapter
->pool
= pool
;
9079 fwd_adapter
->real_adapter
= adapter
;
9080 err
= ixgbe_fwd_ring_up(vdev
, fwd_adapter
);
9083 netif_tx_start_all_queues(vdev
);
9086 /* unwind counter and free adapter struct */
9088 "%s: dfwd hardware acceleration failed\n", vdev
->name
);
9089 clear_bit(pool
, &adapter
->fwd_bitmask
);
9090 adapter
->num_rx_pools
--;
9092 return ERR_PTR(err
);
9095 static void ixgbe_fwd_del(struct net_device
*pdev
, void *priv
)
9097 struct ixgbe_fwd_adapter
*fwd_adapter
= priv
;
9098 struct ixgbe_adapter
*adapter
= fwd_adapter
->real_adapter
;
9101 clear_bit(fwd_adapter
->pool
, &adapter
->fwd_bitmask
);
9102 adapter
->num_rx_pools
--;
9104 limit
= find_last_bit(&adapter
->fwd_bitmask
, 32);
9105 adapter
->ring_feature
[RING_F_VMDQ
].limit
= limit
+ 1;
9106 ixgbe_fwd_ring_down(fwd_adapter
->netdev
, fwd_adapter
);
9107 ixgbe_setup_tc(pdev
, netdev_get_num_tc(pdev
));
9108 netdev_dbg(pdev
, "pool %i:%i queues %i:%i VSI bitmask %lx\n",
9109 fwd_adapter
->pool
, adapter
->num_rx_pools
,
9110 fwd_adapter
->rx_base_queue
,
9111 fwd_adapter
->rx_base_queue
+ adapter
->num_rx_queues_per_pool
,
9112 adapter
->fwd_bitmask
);
9116 #define IXGBE_MAX_MAC_HDR_LEN 127
9117 #define IXGBE_MAX_NETWORK_HDR_LEN 511
9119 static netdev_features_t
9120 ixgbe_features_check(struct sk_buff
*skb
, struct net_device
*dev
,
9121 netdev_features_t features
)
9123 unsigned int network_hdr_len
, mac_hdr_len
;
9125 /* Make certain the headers can be described by a context descriptor */
9126 mac_hdr_len
= skb_network_header(skb
) - skb
->data
;
9127 if (unlikely(mac_hdr_len
> IXGBE_MAX_MAC_HDR_LEN
))
9128 return features
& ~(NETIF_F_HW_CSUM
|
9130 NETIF_F_HW_VLAN_CTAG_TX
|
9134 network_hdr_len
= skb_checksum_start(skb
) - skb_network_header(skb
);
9135 if (unlikely(network_hdr_len
> IXGBE_MAX_NETWORK_HDR_LEN
))
9136 return features
& ~(NETIF_F_HW_CSUM
|
9141 /* We can only support IPV4 TSO in tunnels if we can mangle the
9142 * inner IP ID field, so strip TSO if MANGLEID is not supported.
9144 if (skb
->encapsulation
&& !(features
& NETIF_F_TSO_MANGLEID
))
9145 features
&= ~NETIF_F_TSO
;
9150 static const struct net_device_ops ixgbe_netdev_ops
= {
9151 .ndo_open
= ixgbe_open
,
9152 .ndo_stop
= ixgbe_close
,
9153 .ndo_start_xmit
= ixgbe_xmit_frame
,
9154 .ndo_select_queue
= ixgbe_select_queue
,
9155 .ndo_set_rx_mode
= ixgbe_set_rx_mode
,
9156 .ndo_validate_addr
= eth_validate_addr
,
9157 .ndo_set_mac_address
= ixgbe_set_mac
,
9158 .ndo_change_mtu
= ixgbe_change_mtu
,
9159 .ndo_tx_timeout
= ixgbe_tx_timeout
,
9160 .ndo_set_tx_maxrate
= ixgbe_tx_maxrate
,
9161 .ndo_vlan_rx_add_vid
= ixgbe_vlan_rx_add_vid
,
9162 .ndo_vlan_rx_kill_vid
= ixgbe_vlan_rx_kill_vid
,
9163 .ndo_do_ioctl
= ixgbe_ioctl
,
9164 .ndo_set_vf_mac
= ixgbe_ndo_set_vf_mac
,
9165 .ndo_set_vf_vlan
= ixgbe_ndo_set_vf_vlan
,
9166 .ndo_set_vf_rate
= ixgbe_ndo_set_vf_bw
,
9167 .ndo_set_vf_spoofchk
= ixgbe_ndo_set_vf_spoofchk
,
9168 .ndo_set_vf_rss_query_en
= ixgbe_ndo_set_vf_rss_query_en
,
9169 .ndo_set_vf_trust
= ixgbe_ndo_set_vf_trust
,
9170 .ndo_get_vf_config
= ixgbe_ndo_get_vf_config
,
9171 .ndo_get_stats64
= ixgbe_get_stats64
,
9172 .ndo_setup_tc
= __ixgbe_setup_tc
,
9173 #ifdef CONFIG_NET_POLL_CONTROLLER
9174 .ndo_poll_controller
= ixgbe_netpoll
,
9176 #ifdef CONFIG_NET_RX_BUSY_POLL
9177 .ndo_busy_poll
= ixgbe_low_latency_recv
,
9180 .ndo_fcoe_ddp_setup
= ixgbe_fcoe_ddp_get
,
9181 .ndo_fcoe_ddp_target
= ixgbe_fcoe_ddp_target
,
9182 .ndo_fcoe_ddp_done
= ixgbe_fcoe_ddp_put
,
9183 .ndo_fcoe_enable
= ixgbe_fcoe_enable
,
9184 .ndo_fcoe_disable
= ixgbe_fcoe_disable
,
9185 .ndo_fcoe_get_wwn
= ixgbe_fcoe_get_wwn
,
9186 .ndo_fcoe_get_hbainfo
= ixgbe_fcoe_get_hbainfo
,
9187 #endif /* IXGBE_FCOE */
9188 .ndo_set_features
= ixgbe_set_features
,
9189 .ndo_fix_features
= ixgbe_fix_features
,
9190 .ndo_fdb_add
= ixgbe_ndo_fdb_add
,
9191 .ndo_bridge_setlink
= ixgbe_ndo_bridge_setlink
,
9192 .ndo_bridge_getlink
= ixgbe_ndo_bridge_getlink
,
9193 .ndo_dfwd_add_station
= ixgbe_fwd_add
,
9194 .ndo_dfwd_del_station
= ixgbe_fwd_del
,
9195 .ndo_udp_tunnel_add
= ixgbe_add_vxlan_port
,
9196 .ndo_udp_tunnel_del
= ixgbe_del_vxlan_port
,
9197 .ndo_features_check
= ixgbe_features_check
,
9201 * ixgbe_enumerate_functions - Get the number of ports this device has
9202 * @adapter: adapter structure
9204 * This function enumerates the phsyical functions co-located on a single slot,
9205 * in order to determine how many ports a device has. This is most useful in
9206 * determining the required GT/s of PCIe bandwidth necessary for optimal
9209 static inline int ixgbe_enumerate_functions(struct ixgbe_adapter
*adapter
)
9211 struct pci_dev
*entry
, *pdev
= adapter
->pdev
;
9214 /* Some cards can not use the generic count PCIe functions method,
9215 * because they are behind a parent switch, so we hardcode these with
9216 * the correct number of functions.
9218 if (ixgbe_pcie_from_parent(&adapter
->hw
))
9221 list_for_each_entry(entry
, &adapter
->pdev
->bus
->devices
, bus_list
) {
9222 /* don't count virtual functions */
9223 if (entry
->is_virtfn
)
9226 /* When the devices on the bus don't all match our device ID,
9227 * we can't reliably determine the correct number of
9228 * functions. This can occur if a function has been direct
9229 * attached to a virtual machine using VT-d, for example. In
9230 * this case, simply return -1 to indicate this.
9232 if ((entry
->vendor
!= pdev
->vendor
) ||
9233 (entry
->device
!= pdev
->device
))
9243 * ixgbe_wol_supported - Check whether device supports WoL
9244 * @adapter: the adapter private structure
9245 * @device_id: the device ID
9246 * @subdev_id: the subsystem device ID
9248 * This function is used by probe and ethtool to determine
9249 * which devices have WoL support
9252 bool ixgbe_wol_supported(struct ixgbe_adapter
*adapter
, u16 device_id
,
9255 struct ixgbe_hw
*hw
= &adapter
->hw
;
9256 u16 wol_cap
= adapter
->eeprom_cap
& IXGBE_DEVICE_CAPS_WOL_MASK
;
9258 /* WOL not supported on 82598 */
9259 if (hw
->mac
.type
== ixgbe_mac_82598EB
)
9262 /* check eeprom to see if WOL is enabled for X540 and newer */
9263 if (hw
->mac
.type
>= ixgbe_mac_X540
) {
9264 if ((wol_cap
== IXGBE_DEVICE_CAPS_WOL_PORT0_1
) ||
9265 ((wol_cap
== IXGBE_DEVICE_CAPS_WOL_PORT0
) &&
9266 (hw
->bus
.func
== 0)))
9270 /* WOL is determined based on device IDs for 82599 MACs */
9271 switch (device_id
) {
9272 case IXGBE_DEV_ID_82599_SFP
:
9273 /* Only these subdevices could supports WOL */
9274 switch (subdevice_id
) {
9275 case IXGBE_SUBDEV_ID_82599_560FLR
:
9276 case IXGBE_SUBDEV_ID_82599_LOM_SNAP6
:
9277 case IXGBE_SUBDEV_ID_82599_SFP_WOL0
:
9278 case IXGBE_SUBDEV_ID_82599_SFP_2OCP
:
9279 /* only support first port */
9280 if (hw
->bus
.func
!= 0)
9282 case IXGBE_SUBDEV_ID_82599_SP_560FLR
:
9283 case IXGBE_SUBDEV_ID_82599_SFP
:
9284 case IXGBE_SUBDEV_ID_82599_RNDC
:
9285 case IXGBE_SUBDEV_ID_82599_ECNA_DP
:
9286 case IXGBE_SUBDEV_ID_82599_SFP_1OCP
:
9287 case IXGBE_SUBDEV_ID_82599_SFP_LOM_OEM1
:
9288 case IXGBE_SUBDEV_ID_82599_SFP_LOM_OEM2
:
9292 case IXGBE_DEV_ID_82599EN_SFP
:
9293 /* Only these subdevices support WOL */
9294 switch (subdevice_id
) {
9295 case IXGBE_SUBDEV_ID_82599EN_SFP_OCP1
:
9299 case IXGBE_DEV_ID_82599_COMBO_BACKPLANE
:
9300 /* All except this subdevice support WOL */
9301 if (subdevice_id
!= IXGBE_SUBDEV_ID_82599_KX4_KR_MEZZ
)
9304 case IXGBE_DEV_ID_82599_KX4
:
9314 * ixgbe_probe - Device Initialization Routine
9315 * @pdev: PCI device information struct
9316 * @ent: entry in ixgbe_pci_tbl
9318 * Returns 0 on success, negative on failure
9320 * ixgbe_probe initializes an adapter identified by a pci_dev structure.
9321 * The OS initialization, configuring of the adapter private structure,
9322 * and a hardware reset occur.
9324 static int ixgbe_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
9326 struct net_device
*netdev
;
9327 struct ixgbe_adapter
*adapter
= NULL
;
9328 struct ixgbe_hw
*hw
;
9329 const struct ixgbe_info
*ii
= ixgbe_info_tbl
[ent
->driver_data
];
9330 int i
, err
, pci_using_dac
, expected_gts
;
9331 unsigned int indices
= MAX_TX_QUEUES
;
9332 u8 part_str
[IXGBE_PBANUM_LENGTH
];
9333 bool disable_dev
= false;
9339 /* Catch broken hardware that put the wrong VF device ID in
9340 * the PCIe SR-IOV capability.
9342 if (pdev
->is_virtfn
) {
9343 WARN(1, KERN_ERR
"%s (%hx:%hx) should not be a VF!\n",
9344 pci_name(pdev
), pdev
->vendor
, pdev
->device
);
9348 err
= pci_enable_device_mem(pdev
);
9352 if (!dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(64))) {
9355 err
= dma_set_mask_and_coherent(&pdev
->dev
, DMA_BIT_MASK(32));
9358 "No usable DMA configuration, aborting\n");
9364 err
= pci_request_mem_regions(pdev
, ixgbe_driver_name
);
9367 "pci_request_selected_regions failed 0x%x\n", err
);
9371 pci_enable_pcie_error_reporting(pdev
);
9373 pci_set_master(pdev
);
9374 pci_save_state(pdev
);
9376 if (ii
->mac
== ixgbe_mac_82598EB
) {
9377 #ifdef CONFIG_IXGBE_DCB
9378 /* 8 TC w/ 4 queues per TC */
9379 indices
= 4 * MAX_TRAFFIC_CLASS
;
9381 indices
= IXGBE_MAX_RSS_INDICES
;
9385 netdev
= alloc_etherdev_mq(sizeof(struct ixgbe_adapter
), indices
);
9388 goto err_alloc_etherdev
;
9391 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
9393 adapter
= netdev_priv(netdev
);
9395 adapter
->netdev
= netdev
;
9396 adapter
->pdev
= pdev
;
9399 adapter
->msg_enable
= netif_msg_init(debug
, DEFAULT_MSG_ENABLE
);
9401 hw
->hw_addr
= ioremap(pci_resource_start(pdev
, 0),
9402 pci_resource_len(pdev
, 0));
9403 adapter
->io_addr
= hw
->hw_addr
;
9409 netdev
->netdev_ops
= &ixgbe_netdev_ops
;
9410 ixgbe_set_ethtool_ops(netdev
);
9411 netdev
->watchdog_timeo
= 5 * HZ
;
9412 strlcpy(netdev
->name
, pci_name(pdev
), sizeof(netdev
->name
));
9415 hw
->mac
.ops
= *ii
->mac_ops
;
9416 hw
->mac
.type
= ii
->mac
;
9417 hw
->mvals
= ii
->mvals
;
9420 hw
->eeprom
.ops
= *ii
->eeprom_ops
;
9421 eec
= IXGBE_READ_REG(hw
, IXGBE_EEC(hw
));
9422 if (ixgbe_removed(hw
->hw_addr
)) {
9426 /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */
9427 if (!(eec
& BIT(8)))
9428 hw
->eeprom
.ops
.read
= &ixgbe_read_eeprom_bit_bang_generic
;
9431 hw
->phy
.ops
= *ii
->phy_ops
;
9432 hw
->phy
.sfp_type
= ixgbe_sfp_type_unknown
;
9433 /* ixgbe_identify_phy_generic will set prtad and mmds properly */
9434 hw
->phy
.mdio
.prtad
= MDIO_PRTAD_NONE
;
9435 hw
->phy
.mdio
.mmds
= 0;
9436 hw
->phy
.mdio
.mode_support
= MDIO_SUPPORTS_C45
| MDIO_EMULATE_C22
;
9437 hw
->phy
.mdio
.dev
= netdev
;
9438 hw
->phy
.mdio
.mdio_read
= ixgbe_mdio_read
;
9439 hw
->phy
.mdio
.mdio_write
= ixgbe_mdio_write
;
9441 ii
->get_invariants(hw
);
9443 /* setup the private structure */
9444 err
= ixgbe_sw_init(adapter
);
9448 /* Make sure the SWFW semaphore is in a valid state */
9449 if (hw
->mac
.ops
.init_swfw_sync
)
9450 hw
->mac
.ops
.init_swfw_sync(hw
);
9452 /* Make it possible the adapter to be woken up via WOL */
9453 switch (adapter
->hw
.mac
.type
) {
9454 case ixgbe_mac_82599EB
:
9455 case ixgbe_mac_X540
:
9456 case ixgbe_mac_X550
:
9457 case ixgbe_mac_X550EM_x
:
9458 case ixgbe_mac_x550em_a
:
9459 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_WUS
, ~0);
9466 * If there is a fan on this device and it has failed log the
9469 if (adapter
->flags
& IXGBE_FLAG_FAN_FAIL_CAPABLE
) {
9470 u32 esdp
= IXGBE_READ_REG(hw
, IXGBE_ESDP
);
9471 if (esdp
& IXGBE_ESDP_SDP1
)
9472 e_crit(probe
, "Fan has stopped, replace the adapter\n");
9475 if (allow_unsupported_sfp
)
9476 hw
->allow_unsupported_sfp
= allow_unsupported_sfp
;
9478 /* reset_hw fills in the perm_addr as well */
9479 hw
->phy
.reset_if_overtemp
= true;
9480 err
= hw
->mac
.ops
.reset_hw(hw
);
9481 hw
->phy
.reset_if_overtemp
= false;
9482 if (err
== IXGBE_ERR_SFP_NOT_PRESENT
) {
9484 } else if (err
== IXGBE_ERR_SFP_NOT_SUPPORTED
) {
9485 e_dev_err("failed to load because an unsupported SFP+ or QSFP module type was detected.\n");
9486 e_dev_err("Reload the driver after installing a supported module.\n");
9489 e_dev_err("HW Init failed: %d\n", err
);
9493 #ifdef CONFIG_PCI_IOV
9494 /* SR-IOV not supported on the 82598 */
9495 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
)
9498 ixgbe_init_mbx_params_pf(hw
);
9499 hw
->mbx
.ops
= ii
->mbx_ops
;
9500 pci_sriov_set_totalvfs(pdev
, IXGBE_MAX_VFS_DRV_LIMIT
);
9501 ixgbe_enable_sriov(adapter
);
9505 netdev
->features
= NETIF_F_SG
|
9512 #define IXGBE_GSO_PARTIAL_FEATURES (NETIF_F_GSO_GRE | \
9513 NETIF_F_GSO_GRE_CSUM | \
9514 NETIF_F_GSO_IPXIP4 | \
9515 NETIF_F_GSO_IPXIP6 | \
9516 NETIF_F_GSO_UDP_TUNNEL | \
9517 NETIF_F_GSO_UDP_TUNNEL_CSUM)
9519 netdev
->gso_partial_features
= IXGBE_GSO_PARTIAL_FEATURES
;
9520 netdev
->features
|= NETIF_F_GSO_PARTIAL
|
9521 IXGBE_GSO_PARTIAL_FEATURES
;
9523 if (hw
->mac
.type
>= ixgbe_mac_82599EB
)
9524 netdev
->features
|= NETIF_F_SCTP_CRC
;
9526 /* copy netdev features into list of user selectable features */
9527 netdev
->hw_features
|= netdev
->features
|
9528 NETIF_F_HW_VLAN_CTAG_FILTER
|
9529 NETIF_F_HW_VLAN_CTAG_RX
|
9530 NETIF_F_HW_VLAN_CTAG_TX
|
9532 NETIF_F_HW_L2FW_DOFFLOAD
;
9534 if (hw
->mac
.type
>= ixgbe_mac_82599EB
)
9535 netdev
->hw_features
|= NETIF_F_NTUPLE
|
9539 netdev
->features
|= NETIF_F_HIGHDMA
;
9541 netdev
->vlan_features
|= netdev
->features
| NETIF_F_TSO_MANGLEID
;
9542 netdev
->hw_enc_features
|= netdev
->vlan_features
;
9543 netdev
->mpls_features
|= NETIF_F_HW_CSUM
;
9545 /* set this bit last since it cannot be part of vlan_features */
9546 netdev
->features
|= NETIF_F_HW_VLAN_CTAG_FILTER
|
9547 NETIF_F_HW_VLAN_CTAG_RX
|
9548 NETIF_F_HW_VLAN_CTAG_TX
;
9550 netdev
->priv_flags
|= IFF_UNICAST_FLT
;
9551 netdev
->priv_flags
|= IFF_SUPP_NOFCS
;
9553 #ifdef CONFIG_IXGBE_DCB
9554 if (adapter
->flags
& IXGBE_FLAG_DCB_CAPABLE
)
9555 netdev
->dcbnl_ops
= &dcbnl_ops
;
9559 if (adapter
->flags
& IXGBE_FLAG_FCOE_CAPABLE
) {
9560 unsigned int fcoe_l
;
9562 if (hw
->mac
.ops
.get_device_caps
) {
9563 hw
->mac
.ops
.get_device_caps(hw
, &device_caps
);
9564 if (device_caps
& IXGBE_DEVICE_CAPS_FCOE_OFFLOADS
)
9565 adapter
->flags
&= ~IXGBE_FLAG_FCOE_CAPABLE
;
9569 fcoe_l
= min_t(int, IXGBE_FCRETA_SIZE
, num_online_cpus());
9570 adapter
->ring_feature
[RING_F_FCOE
].limit
= fcoe_l
;
9572 netdev
->features
|= NETIF_F_FSO
|
9575 netdev
->vlan_features
|= NETIF_F_FSO
|
9579 #endif /* IXGBE_FCOE */
9581 if (adapter
->flags2
& IXGBE_FLAG2_RSC_CAPABLE
)
9582 netdev
->hw_features
|= NETIF_F_LRO
;
9583 if (adapter
->flags2
& IXGBE_FLAG2_RSC_ENABLED
)
9584 netdev
->features
|= NETIF_F_LRO
;
9586 /* make sure the EEPROM is good */
9587 if (hw
->eeprom
.ops
.validate_checksum(hw
, NULL
) < 0) {
9588 e_dev_err("The EEPROM Checksum Is Not Valid\n");
9593 eth_platform_get_mac_address(&adapter
->pdev
->dev
,
9594 adapter
->hw
.mac
.perm_addr
);
9596 memcpy(netdev
->dev_addr
, hw
->mac
.perm_addr
, netdev
->addr_len
);
9598 if (!is_valid_ether_addr(netdev
->dev_addr
)) {
9599 e_dev_err("invalid MAC address\n");
9604 /* Set hw->mac.addr to permanent MAC address */
9605 ether_addr_copy(hw
->mac
.addr
, hw
->mac
.perm_addr
);
9606 ixgbe_mac_set_default_filter(adapter
);
9608 setup_timer(&adapter
->service_timer
, &ixgbe_service_timer
,
9609 (unsigned long) adapter
);
9611 if (ixgbe_removed(hw
->hw_addr
)) {
9615 INIT_WORK(&adapter
->service_task
, ixgbe_service_task
);
9616 set_bit(__IXGBE_SERVICE_INITED
, &adapter
->state
);
9617 clear_bit(__IXGBE_SERVICE_SCHED
, &adapter
->state
);
9619 err
= ixgbe_init_interrupt_scheme(adapter
);
9623 /* WOL not supported for all devices */
9625 hw
->eeprom
.ops
.read(hw
, 0x2c, &adapter
->eeprom_cap
);
9626 hw
->wol_enabled
= ixgbe_wol_supported(adapter
, pdev
->device
,
9627 pdev
->subsystem_device
);
9628 if (hw
->wol_enabled
)
9629 adapter
->wol
= IXGBE_WUFC_MAG
;
9631 device_set_wakeup_enable(&adapter
->pdev
->dev
, adapter
->wol
);
9633 /* save off EEPROM version number */
9634 hw
->eeprom
.ops
.read(hw
, 0x2e, &adapter
->eeprom_verh
);
9635 hw
->eeprom
.ops
.read(hw
, 0x2d, &adapter
->eeprom_verl
);
9637 /* pick up the PCI bus settings for reporting later */
9638 if (ixgbe_pcie_from_parent(hw
))
9639 ixgbe_get_parent_bus_info(adapter
);
9641 hw
->mac
.ops
.get_bus_info(hw
);
9643 /* calculate the expected PCIe bandwidth required for optimal
9644 * performance. Note that some older parts will never have enough
9645 * bandwidth due to being older generation PCIe parts. We clamp these
9646 * parts to ensure no warning is displayed if it can't be fixed.
9648 switch (hw
->mac
.type
) {
9649 case ixgbe_mac_82598EB
:
9650 expected_gts
= min(ixgbe_enumerate_functions(adapter
) * 10, 16);
9653 expected_gts
= ixgbe_enumerate_functions(adapter
) * 10;
9657 /* don't check link if we failed to enumerate functions */
9658 if (expected_gts
> 0)
9659 ixgbe_check_minimum_link(adapter
, expected_gts
);
9661 err
= ixgbe_read_pba_string_generic(hw
, part_str
, sizeof(part_str
));
9663 strlcpy(part_str
, "Unknown", sizeof(part_str
));
9664 if (ixgbe_is_sfp(hw
) && hw
->phy
.sfp_type
!= ixgbe_sfp_type_not_present
)
9665 e_dev_info("MAC: %d, PHY: %d, SFP+: %d, PBA No: %s\n",
9666 hw
->mac
.type
, hw
->phy
.type
, hw
->phy
.sfp_type
,
9669 e_dev_info("MAC: %d, PHY: %d, PBA No: %s\n",
9670 hw
->mac
.type
, hw
->phy
.type
, part_str
);
9672 e_dev_info("%pM\n", netdev
->dev_addr
);
9674 /* reset the hardware with the new settings */
9675 err
= hw
->mac
.ops
.start_hw(hw
);
9676 if (err
== IXGBE_ERR_EEPROM_VERSION
) {
9677 /* We are running on a pre-production device, log a warning */
9678 e_dev_warn("This device is a pre-production adapter/LOM. "
9679 "Please be aware there may be issues associated "
9680 "with your hardware. If you are experiencing "
9681 "problems please contact your Intel or hardware "
9682 "representative who provided you with this "
9685 strcpy(netdev
->name
, "eth%d");
9686 err
= register_netdev(netdev
);
9690 pci_set_drvdata(pdev
, adapter
);
9692 /* power down the optics for 82599 SFP+ fiber */
9693 if (hw
->mac
.ops
.disable_tx_laser
)
9694 hw
->mac
.ops
.disable_tx_laser(hw
);
9696 /* carrier off reporting is important to ethtool even BEFORE open */
9697 netif_carrier_off(netdev
);
9699 #ifdef CONFIG_IXGBE_DCA
9700 if (dca_add_requester(&pdev
->dev
) == 0) {
9701 adapter
->flags
|= IXGBE_FLAG_DCA_ENABLED
;
9702 ixgbe_setup_dca(adapter
);
9705 if (adapter
->flags
& IXGBE_FLAG_SRIOV_ENABLED
) {
9706 e_info(probe
, "IOV is enabled with %d VFs\n", adapter
->num_vfs
);
9707 for (i
= 0; i
< adapter
->num_vfs
; i
++)
9708 ixgbe_vf_configuration(pdev
, (i
| 0x10000000));
9711 /* firmware requires driver version to be 0xFFFFFFFF
9712 * since os does not support feature
9714 if (hw
->mac
.ops
.set_fw_drv_ver
)
9715 hw
->mac
.ops
.set_fw_drv_ver(hw
, 0xFF, 0xFF, 0xFF,
9718 /* add san mac addr to netdev */
9719 ixgbe_add_sanmac_netdev(netdev
);
9721 e_dev_info("%s\n", ixgbe_default_device_descr
);
9723 #ifdef CONFIG_IXGBE_HWMON
9724 if (ixgbe_sysfs_init(adapter
))
9725 e_err(probe
, "failed to allocate sysfs resources\n");
9726 #endif /* CONFIG_IXGBE_HWMON */
9728 ixgbe_dbg_adapter_init(adapter
);
9730 /* setup link for SFP devices with MNG FW, else wait for IXGBE_UP */
9731 if (ixgbe_mng_enabled(hw
) && ixgbe_is_sfp(hw
) && hw
->mac
.ops
.setup_link
)
9732 hw
->mac
.ops
.setup_link(hw
,
9733 IXGBE_LINK_SPEED_10GB_FULL
| IXGBE_LINK_SPEED_1GB_FULL
,
9739 ixgbe_release_hw_control(adapter
);
9740 ixgbe_clear_interrupt_scheme(adapter
);
9742 ixgbe_disable_sriov(adapter
);
9743 adapter
->flags2
&= ~IXGBE_FLAG2_SEARCH_FOR_SFP
;
9744 iounmap(adapter
->io_addr
);
9745 kfree(adapter
->jump_tables
[0]);
9746 kfree(adapter
->mac_table
);
9748 disable_dev
= !test_and_set_bit(__IXGBE_DISABLED
, &adapter
->state
);
9749 free_netdev(netdev
);
9751 pci_release_mem_regions(pdev
);
9754 if (!adapter
|| disable_dev
)
9755 pci_disable_device(pdev
);
9760 * ixgbe_remove - Device Removal Routine
9761 * @pdev: PCI device information struct
9763 * ixgbe_remove is called by the PCI subsystem to alert the driver
9764 * that it should release a PCI device. The could be caused by a
9765 * Hot-Plug event, or because the driver is going to be removed from
9768 static void ixgbe_remove(struct pci_dev
*pdev
)
9770 struct ixgbe_adapter
*adapter
= pci_get_drvdata(pdev
);
9771 struct net_device
*netdev
;
9775 /* if !adapter then we already cleaned up in probe */
9779 netdev
= adapter
->netdev
;
9780 ixgbe_dbg_adapter_exit(adapter
);
9782 set_bit(__IXGBE_REMOVING
, &adapter
->state
);
9783 cancel_work_sync(&adapter
->service_task
);
9786 #ifdef CONFIG_IXGBE_DCA
9787 if (adapter
->flags
& IXGBE_FLAG_DCA_ENABLED
) {
9788 adapter
->flags
&= ~IXGBE_FLAG_DCA_ENABLED
;
9789 dca_remove_requester(&pdev
->dev
);
9790 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_DCA_CTRL
,
9791 IXGBE_DCA_CTRL_DCA_DISABLE
);
9795 #ifdef CONFIG_IXGBE_HWMON
9796 ixgbe_sysfs_exit(adapter
);
9797 #endif /* CONFIG_IXGBE_HWMON */
9799 /* remove the added san mac */
9800 ixgbe_del_sanmac_netdev(netdev
);
9802 #ifdef CONFIG_PCI_IOV
9803 ixgbe_disable_sriov(adapter
);
9805 if (netdev
->reg_state
== NETREG_REGISTERED
)
9806 unregister_netdev(netdev
);
9808 ixgbe_clear_interrupt_scheme(adapter
);
9810 ixgbe_release_hw_control(adapter
);
9813 kfree(adapter
->ixgbe_ieee_pfc
);
9814 kfree(adapter
->ixgbe_ieee_ets
);
9817 iounmap(adapter
->io_addr
);
9818 pci_release_mem_regions(pdev
);
9820 e_dev_info("complete\n");
9822 for (i
= 0; i
< IXGBE_MAX_LINK_HANDLE
; i
++) {
9823 if (adapter
->jump_tables
[i
]) {
9824 kfree(adapter
->jump_tables
[i
]->input
);
9825 kfree(adapter
->jump_tables
[i
]->mask
);
9827 kfree(adapter
->jump_tables
[i
]);
9830 kfree(adapter
->mac_table
);
9831 disable_dev
= !test_and_set_bit(__IXGBE_DISABLED
, &adapter
->state
);
9832 free_netdev(netdev
);
9834 pci_disable_pcie_error_reporting(pdev
);
9837 pci_disable_device(pdev
);
9841 * ixgbe_io_error_detected - called when PCI error is detected
9842 * @pdev: Pointer to PCI device
9843 * @state: The current pci connection state
9845 * This function is called after a PCI bus error affecting
9846 * this device has been detected.
9848 static pci_ers_result_t
ixgbe_io_error_detected(struct pci_dev
*pdev
,
9849 pci_channel_state_t state
)
9851 struct ixgbe_adapter
*adapter
= pci_get_drvdata(pdev
);
9852 struct net_device
*netdev
= adapter
->netdev
;
9854 #ifdef CONFIG_PCI_IOV
9855 struct ixgbe_hw
*hw
= &adapter
->hw
;
9856 struct pci_dev
*bdev
, *vfdev
;
9857 u32 dw0
, dw1
, dw2
, dw3
;
9859 u16 req_id
, pf_func
;
9861 if (adapter
->hw
.mac
.type
== ixgbe_mac_82598EB
||
9862 adapter
->num_vfs
== 0)
9863 goto skip_bad_vf_detection
;
9865 bdev
= pdev
->bus
->self
;
9866 while (bdev
&& (pci_pcie_type(bdev
) != PCI_EXP_TYPE_ROOT_PORT
))
9867 bdev
= bdev
->bus
->self
;
9870 goto skip_bad_vf_detection
;
9872 pos
= pci_find_ext_capability(bdev
, PCI_EXT_CAP_ID_ERR
);
9874 goto skip_bad_vf_detection
;
9876 dw0
= ixgbe_read_pci_cfg_dword(hw
, pos
+ PCI_ERR_HEADER_LOG
);
9877 dw1
= ixgbe_read_pci_cfg_dword(hw
, pos
+ PCI_ERR_HEADER_LOG
+ 4);
9878 dw2
= ixgbe_read_pci_cfg_dword(hw
, pos
+ PCI_ERR_HEADER_LOG
+ 8);
9879 dw3
= ixgbe_read_pci_cfg_dword(hw
, pos
+ PCI_ERR_HEADER_LOG
+ 12);
9880 if (ixgbe_removed(hw
->hw_addr
))
9881 goto skip_bad_vf_detection
;
9884 /* On the 82599 if bit 7 of the requestor ID is set then it's a VF */
9885 if (!(req_id
& 0x0080))
9886 goto skip_bad_vf_detection
;
9888 pf_func
= req_id
& 0x01;
9889 if ((pf_func
& 1) == (pdev
->devfn
& 1)) {
9890 unsigned int device_id
;
9892 vf
= (req_id
& 0x7F) >> 1;
9893 e_dev_err("VF %d has caused a PCIe error\n", vf
);
9894 e_dev_err("TLP: dw0: %8.8x\tdw1: %8.8x\tdw2: "
9895 "%8.8x\tdw3: %8.8x\n",
9896 dw0
, dw1
, dw2
, dw3
);
9897 switch (adapter
->hw
.mac
.type
) {
9898 case ixgbe_mac_82599EB
:
9899 device_id
= IXGBE_82599_VF_DEVICE_ID
;
9901 case ixgbe_mac_X540
:
9902 device_id
= IXGBE_X540_VF_DEVICE_ID
;
9904 case ixgbe_mac_X550
:
9905 device_id
= IXGBE_DEV_ID_X550_VF
;
9907 case ixgbe_mac_X550EM_x
:
9908 device_id
= IXGBE_DEV_ID_X550EM_X_VF
;
9910 case ixgbe_mac_x550em_a
:
9911 device_id
= IXGBE_DEV_ID_X550EM_A_VF
;
9918 /* Find the pci device of the offending VF */
9919 vfdev
= pci_get_device(PCI_VENDOR_ID_INTEL
, device_id
, NULL
);
9921 if (vfdev
->devfn
== (req_id
& 0xFF))
9923 vfdev
= pci_get_device(PCI_VENDOR_ID_INTEL
,
9927 * There's a slim chance the VF could have been hot plugged,
9928 * so if it is no longer present we don't need to issue the
9929 * VFLR. Just clean up the AER in that case.
9932 ixgbe_issue_vf_flr(adapter
, vfdev
);
9933 /* Free device reference count */
9937 pci_cleanup_aer_uncorrect_error_status(pdev
);
9941 * Even though the error may have occurred on the other port
9942 * we still need to increment the vf error reference count for
9943 * both ports because the I/O resume function will be called
9946 adapter
->vferr_refcount
++;
9948 return PCI_ERS_RESULT_RECOVERED
;
9950 skip_bad_vf_detection
:
9951 #endif /* CONFIG_PCI_IOV */
9952 if (!test_bit(__IXGBE_SERVICE_INITED
, &adapter
->state
))
9953 return PCI_ERS_RESULT_DISCONNECT
;
9956 netif_device_detach(netdev
);
9958 if (state
== pci_channel_io_perm_failure
) {
9960 return PCI_ERS_RESULT_DISCONNECT
;
9963 if (netif_running(netdev
))
9964 ixgbe_down(adapter
);
9966 if (!test_and_set_bit(__IXGBE_DISABLED
, &adapter
->state
))
9967 pci_disable_device(pdev
);
9970 /* Request a slot reset. */
9971 return PCI_ERS_RESULT_NEED_RESET
;
9975 * ixgbe_io_slot_reset - called after the pci bus has been reset.
9976 * @pdev: Pointer to PCI device
9978 * Restart the card from scratch, as if from a cold-boot.
9980 static pci_ers_result_t
ixgbe_io_slot_reset(struct pci_dev
*pdev
)
9982 struct ixgbe_adapter
*adapter
= pci_get_drvdata(pdev
);
9983 pci_ers_result_t result
;
9986 if (pci_enable_device_mem(pdev
)) {
9987 e_err(probe
, "Cannot re-enable PCI device after reset.\n");
9988 result
= PCI_ERS_RESULT_DISCONNECT
;
9990 smp_mb__before_atomic();
9991 clear_bit(__IXGBE_DISABLED
, &adapter
->state
);
9992 adapter
->hw
.hw_addr
= adapter
->io_addr
;
9993 pci_set_master(pdev
);
9994 pci_restore_state(pdev
);
9995 pci_save_state(pdev
);
9997 pci_wake_from_d3(pdev
, false);
9999 ixgbe_reset(adapter
);
10000 IXGBE_WRITE_REG(&adapter
->hw
, IXGBE_WUS
, ~0);
10001 result
= PCI_ERS_RESULT_RECOVERED
;
10004 err
= pci_cleanup_aer_uncorrect_error_status(pdev
);
10006 e_dev_err("pci_cleanup_aer_uncorrect_error_status "
10007 "failed 0x%0x\n", err
);
10008 /* non-fatal, continue */
10015 * ixgbe_io_resume - called when traffic can start flowing again.
10016 * @pdev: Pointer to PCI device
10018 * This callback is called when the error recovery driver tells us that
10019 * its OK to resume normal operation.
10021 static void ixgbe_io_resume(struct pci_dev
*pdev
)
10023 struct ixgbe_adapter
*adapter
= pci_get_drvdata(pdev
);
10024 struct net_device
*netdev
= adapter
->netdev
;
10026 #ifdef CONFIG_PCI_IOV
10027 if (adapter
->vferr_refcount
) {
10028 e_info(drv
, "Resuming after VF err\n");
10029 adapter
->vferr_refcount
--;
10034 if (netif_running(netdev
))
10037 netif_device_attach(netdev
);
10040 static const struct pci_error_handlers ixgbe_err_handler
= {
10041 .error_detected
= ixgbe_io_error_detected
,
10042 .slot_reset
= ixgbe_io_slot_reset
,
10043 .resume
= ixgbe_io_resume
,
10046 static struct pci_driver ixgbe_driver
= {
10047 .name
= ixgbe_driver_name
,
10048 .id_table
= ixgbe_pci_tbl
,
10049 .probe
= ixgbe_probe
,
10050 .remove
= ixgbe_remove
,
10052 .suspend
= ixgbe_suspend
,
10053 .resume
= ixgbe_resume
,
10055 .shutdown
= ixgbe_shutdown
,
10056 .sriov_configure
= ixgbe_pci_sriov_configure
,
10057 .err_handler
= &ixgbe_err_handler
10061 * ixgbe_init_module - Driver Registration Routine
10063 * ixgbe_init_module is the first routine called when the driver is
10064 * loaded. All it does is register with the PCI subsystem.
10066 static int __init
ixgbe_init_module(void)
10069 pr_info("%s - version %s\n", ixgbe_driver_string
, ixgbe_driver_version
);
10070 pr_info("%s\n", ixgbe_copyright
);
10072 ixgbe_wq
= create_singlethread_workqueue(ixgbe_driver_name
);
10074 pr_err("%s: Failed to create workqueue\n", ixgbe_driver_name
);
10080 ret
= pci_register_driver(&ixgbe_driver
);
10082 destroy_workqueue(ixgbe_wq
);
10087 #ifdef CONFIG_IXGBE_DCA
10088 dca_register_notify(&dca_notifier
);
10094 module_init(ixgbe_init_module
);
10097 * ixgbe_exit_module - Driver Exit Cleanup Routine
10099 * ixgbe_exit_module is called just before the driver is removed
10102 static void __exit
ixgbe_exit_module(void)
10104 #ifdef CONFIG_IXGBE_DCA
10105 dca_unregister_notify(&dca_notifier
);
10107 pci_unregister_driver(&ixgbe_driver
);
10111 destroy_workqueue(ixgbe_wq
);
10116 #ifdef CONFIG_IXGBE_DCA
10117 static int ixgbe_notify_dca(struct notifier_block
*nb
, unsigned long event
,
10122 ret_val
= driver_for_each_device(&ixgbe_driver
.driver
, NULL
, &event
,
10123 __ixgbe_notify_dca
);
10125 return ret_val
? NOTIFY_BAD
: NOTIFY_DONE
;
10128 #endif /* CONFIG_IXGBE_DCA */
10130 module_exit(ixgbe_exit_module
);