]>
Commit | Line | Data |
---|---|---|
d1a890fa SB |
1 | /* |
2 | * Linux driver for VMware's vmxnet3 ethernet NIC. | |
3 | * | |
123db31d | 4 | * Copyright (C) 2008-2020, VMware, Inc. All Rights Reserved. |
d1a890fa SB |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; version 2 of the License and no later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or | |
13 | * NON INFRINGEMENT. See the GNU General Public License for more | |
14 | * details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
19 | * | |
20 | * The full GNU General Public License is included in this distribution in | |
21 | * the file called "COPYING". | |
22 | * | |
190af10f | 23 | * Maintained by: pv-drivers@vmware.com |
d1a890fa SB |
24 | * |
25 | */ | |
26 | ||
9d9779e7 | 27 | #include <linux/module.h> |
b038b040 SR |
28 | #include <net/ip6_checksum.h> |
29 | ||
d1a890fa SB |
30 | #include "vmxnet3_int.h" |
31 | ||
32 | char vmxnet3_driver_name[] = "vmxnet3"; | |
33 | #define VMXNET3_DRIVER_DESC "VMware vmxnet3 virtual NIC driver" | |
34 | ||
d1a890fa SB |
35 | /* |
36 | * PCI Device ID Table | |
37 | * Last entry must be all 0s | |
38 | */ | |
9baa3c34 | 39 | static const struct pci_device_id vmxnet3_pciid_table[] = { |
d1a890fa SB |
40 | {PCI_VDEVICE(VMWARE, PCI_DEVICE_ID_VMWARE_VMXNET3)}, |
41 | {0} | |
42 | }; | |
43 | ||
44 | MODULE_DEVICE_TABLE(pci, vmxnet3_pciid_table); | |
45 | ||
09c5088e | 46 | static int enable_mq = 1; |
d1a890fa | 47 | |
f9f25026 SB |
48 | static void |
49 | vmxnet3_write_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac); | |
50 | ||
d1a890fa SB |
51 | /* |
52 | * Enable/Disable the given intr | |
53 | */ | |
54 | static void | |
55 | vmxnet3_enable_intr(struct vmxnet3_adapter *adapter, unsigned intr_idx) | |
56 | { | |
57 | VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 0); | |
58 | } | |
59 | ||
60 | ||
61 | static void | |
62 | vmxnet3_disable_intr(struct vmxnet3_adapter *adapter, unsigned intr_idx) | |
63 | { | |
64 | VMXNET3_WRITE_BAR0_REG(adapter, VMXNET3_REG_IMR + intr_idx * 8, 1); | |
65 | } | |
66 | ||
67 | ||
68 | /* | |
69 | * Enable/Disable all intrs used by the device | |
70 | */ | |
71 | static void | |
72 | vmxnet3_enable_all_intrs(struct vmxnet3_adapter *adapter) | |
73 | { | |
74 | int i; | |
75 | ||
76 | for (i = 0; i < adapter->intr.num_intrs; i++) | |
77 | vmxnet3_enable_intr(adapter, i); | |
6929fe8a RZ |
78 | adapter->shared->devRead.intrConf.intrCtrl &= |
79 | cpu_to_le32(~VMXNET3_IC_DISABLE_ALL); | |
d1a890fa SB |
80 | } |
81 | ||
82 | ||
83 | static void | |
84 | vmxnet3_disable_all_intrs(struct vmxnet3_adapter *adapter) | |
85 | { | |
86 | int i; | |
87 | ||
6929fe8a RZ |
88 | adapter->shared->devRead.intrConf.intrCtrl |= |
89 | cpu_to_le32(VMXNET3_IC_DISABLE_ALL); | |
d1a890fa SB |
90 | for (i = 0; i < adapter->intr.num_intrs; i++) |
91 | vmxnet3_disable_intr(adapter, i); | |
92 | } | |
93 | ||
94 | ||
95 | static void | |
96 | vmxnet3_ack_events(struct vmxnet3_adapter *adapter, u32 events) | |
97 | { | |
98 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_ECR, events); | |
99 | } | |
100 | ||
101 | ||
102 | static bool | |
103 | vmxnet3_tq_stopped(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
104 | { | |
09c5088e | 105 | return tq->stopped; |
d1a890fa SB |
106 | } |
107 | ||
108 | ||
109 | static void | |
110 | vmxnet3_tq_start(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
111 | { | |
112 | tq->stopped = false; | |
09c5088e | 113 | netif_start_subqueue(adapter->netdev, tq - adapter->tx_queue); |
d1a890fa SB |
114 | } |
115 | ||
116 | ||
117 | static void | |
118 | vmxnet3_tq_wake(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
119 | { | |
120 | tq->stopped = false; | |
09c5088e | 121 | netif_wake_subqueue(adapter->netdev, (tq - adapter->tx_queue)); |
d1a890fa SB |
122 | } |
123 | ||
124 | ||
125 | static void | |
126 | vmxnet3_tq_stop(struct vmxnet3_tx_queue *tq, struct vmxnet3_adapter *adapter) | |
127 | { | |
128 | tq->stopped = true; | |
129 | tq->num_stop++; | |
09c5088e | 130 | netif_stop_subqueue(adapter->netdev, (tq - adapter->tx_queue)); |
d1a890fa SB |
131 | } |
132 | ||
133 | ||
134 | /* | |
135 | * Check the link state. This may start or stop the tx queue. | |
136 | */ | |
137 | static void | |
4a1745fc | 138 | vmxnet3_check_link(struct vmxnet3_adapter *adapter, bool affectTxQueue) |
d1a890fa SB |
139 | { |
140 | u32 ret; | |
09c5088e | 141 | int i; |
83d0feff | 142 | unsigned long flags; |
d1a890fa | 143 | |
83d0feff | 144 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
145 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_GET_LINK); |
146 | ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
83d0feff SB |
147 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
148 | ||
d1a890fa SB |
149 | adapter->link_speed = ret >> 16; |
150 | if (ret & 1) { /* Link is up. */ | |
204a6e65 SH |
151 | netdev_info(adapter->netdev, "NIC Link is Up %d Mbps\n", |
152 | adapter->link_speed); | |
6cdd20c3 | 153 | netif_carrier_on(adapter->netdev); |
d1a890fa | 154 | |
09c5088e SB |
155 | if (affectTxQueue) { |
156 | for (i = 0; i < adapter->num_tx_queues; i++) | |
157 | vmxnet3_tq_start(&adapter->tx_queue[i], | |
158 | adapter); | |
159 | } | |
d1a890fa | 160 | } else { |
204a6e65 | 161 | netdev_info(adapter->netdev, "NIC Link is Down\n"); |
6cdd20c3 | 162 | netif_carrier_off(adapter->netdev); |
d1a890fa | 163 | |
09c5088e SB |
164 | if (affectTxQueue) { |
165 | for (i = 0; i < adapter->num_tx_queues; i++) | |
166 | vmxnet3_tq_stop(&adapter->tx_queue[i], adapter); | |
167 | } | |
d1a890fa SB |
168 | } |
169 | } | |
170 | ||
d1a890fa SB |
171 | static void |
172 | vmxnet3_process_events(struct vmxnet3_adapter *adapter) | |
173 | { | |
09c5088e | 174 | int i; |
e328d410 | 175 | unsigned long flags; |
115924b6 | 176 | u32 events = le32_to_cpu(adapter->shared->ecr); |
d1a890fa SB |
177 | if (!events) |
178 | return; | |
179 | ||
180 | vmxnet3_ack_events(adapter, events); | |
181 | ||
182 | /* Check if link state has changed */ | |
183 | if (events & VMXNET3_ECR_LINK) | |
4a1745fc | 184 | vmxnet3_check_link(adapter, true); |
d1a890fa SB |
185 | |
186 | /* Check if there is an error on xmit/recv queues */ | |
187 | if (events & (VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR)) { | |
e328d410 | 188 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
189 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
190 | VMXNET3_CMD_GET_QUEUE_STATUS); | |
e328d410 | 191 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa | 192 | |
09c5088e SB |
193 | for (i = 0; i < adapter->num_tx_queues; i++) |
194 | if (adapter->tqd_start[i].status.stopped) | |
195 | dev_err(&adapter->netdev->dev, | |
196 | "%s: tq[%d] error 0x%x\n", | |
197 | adapter->netdev->name, i, le32_to_cpu( | |
198 | adapter->tqd_start[i].status.error)); | |
199 | for (i = 0; i < adapter->num_rx_queues; i++) | |
200 | if (adapter->rqd_start[i].status.stopped) | |
201 | dev_err(&adapter->netdev->dev, | |
202 | "%s: rq[%d] error 0x%x\n", | |
203 | adapter->netdev->name, i, | |
204 | adapter->rqd_start[i].status.error); | |
d1a890fa SB |
205 | |
206 | schedule_work(&adapter->work); | |
207 | } | |
208 | } | |
209 | ||
115924b6 SB |
210 | #ifdef __BIG_ENDIAN_BITFIELD |
211 | /* | |
212 | * The device expects the bitfields in shared structures to be written in | |
213 | * little endian. When CPU is big endian, the following routines are used to | |
214 | * correctly read and write into ABI. | |
215 | * The general technique used here is : double word bitfields are defined in | |
216 | * opposite order for big endian architecture. Then before reading them in | |
217 | * driver the complete double word is translated using le32_to_cpu. Similarly | |
218 | * After the driver writes into bitfields, cpu_to_le32 is used to translate the | |
219 | * double words into required format. | |
220 | * In order to avoid touching bits in shared structure more than once, temporary | |
221 | * descriptors are used. These are passed as srcDesc to following functions. | |
222 | */ | |
223 | static void vmxnet3_RxDescToCPU(const struct Vmxnet3_RxDesc *srcDesc, | |
224 | struct Vmxnet3_RxDesc *dstDesc) | |
225 | { | |
226 | u32 *src = (u32 *)srcDesc + 2; | |
227 | u32 *dst = (u32 *)dstDesc + 2; | |
228 | dstDesc->addr = le64_to_cpu(srcDesc->addr); | |
229 | *dst = le32_to_cpu(*src); | |
230 | dstDesc->ext1 = le32_to_cpu(srcDesc->ext1); | |
231 | } | |
232 | ||
233 | static void vmxnet3_TxDescToLe(const struct Vmxnet3_TxDesc *srcDesc, | |
234 | struct Vmxnet3_TxDesc *dstDesc) | |
235 | { | |
236 | int i; | |
237 | u32 *src = (u32 *)(srcDesc + 1); | |
238 | u32 *dst = (u32 *)(dstDesc + 1); | |
239 | ||
240 | /* Working backwards so that the gen bit is set at the end. */ | |
241 | for (i = 2; i > 0; i--) { | |
242 | src--; | |
243 | dst--; | |
244 | *dst = cpu_to_le32(*src); | |
245 | } | |
246 | } | |
247 | ||
248 | ||
249 | static void vmxnet3_RxCompToCPU(const struct Vmxnet3_RxCompDesc *srcDesc, | |
250 | struct Vmxnet3_RxCompDesc *dstDesc) | |
251 | { | |
252 | int i = 0; | |
253 | u32 *src = (u32 *)srcDesc; | |
254 | u32 *dst = (u32 *)dstDesc; | |
255 | for (i = 0; i < sizeof(struct Vmxnet3_RxCompDesc) / sizeof(u32); i++) { | |
256 | *dst = le32_to_cpu(*src); | |
257 | src++; | |
258 | dst++; | |
259 | } | |
260 | } | |
261 | ||
262 | ||
263 | /* Used to read bitfield values from double words. */ | |
264 | static u32 get_bitfield32(const __le32 *bitfield, u32 pos, u32 size) | |
265 | { | |
266 | u32 temp = le32_to_cpu(*bitfield); | |
267 | u32 mask = ((1 << size) - 1) << pos; | |
268 | temp &= mask; | |
269 | temp >>= pos; | |
270 | return temp; | |
271 | } | |
272 | ||
273 | ||
274 | ||
275 | #endif /* __BIG_ENDIAN_BITFIELD */ | |
276 | ||
277 | #ifdef __BIG_ENDIAN_BITFIELD | |
278 | ||
279 | # define VMXNET3_TXDESC_GET_GEN(txdesc) get_bitfield32(((const __le32 *) \ | |
280 | txdesc) + VMXNET3_TXD_GEN_DWORD_SHIFT, \ | |
281 | VMXNET3_TXD_GEN_SHIFT, VMXNET3_TXD_GEN_SIZE) | |
282 | # define VMXNET3_TXDESC_GET_EOP(txdesc) get_bitfield32(((const __le32 *) \ | |
283 | txdesc) + VMXNET3_TXD_EOP_DWORD_SHIFT, \ | |
284 | VMXNET3_TXD_EOP_SHIFT, VMXNET3_TXD_EOP_SIZE) | |
285 | # define VMXNET3_TCD_GET_GEN(tcd) get_bitfield32(((const __le32 *)tcd) + \ | |
286 | VMXNET3_TCD_GEN_DWORD_SHIFT, VMXNET3_TCD_GEN_SHIFT, \ | |
287 | VMXNET3_TCD_GEN_SIZE) | |
288 | # define VMXNET3_TCD_GET_TXIDX(tcd) get_bitfield32((const __le32 *)tcd, \ | |
289 | VMXNET3_TCD_TXIDX_SHIFT, VMXNET3_TCD_TXIDX_SIZE) | |
290 | # define vmxnet3_getRxComp(dstrcd, rcd, tmp) do { \ | |
291 | (dstrcd) = (tmp); \ | |
292 | vmxnet3_RxCompToCPU((rcd), (tmp)); \ | |
293 | } while (0) | |
294 | # define vmxnet3_getRxDesc(dstrxd, rxd, tmp) do { \ | |
295 | (dstrxd) = (tmp); \ | |
296 | vmxnet3_RxDescToCPU((rxd), (tmp)); \ | |
297 | } while (0) | |
298 | ||
299 | #else | |
300 | ||
301 | # define VMXNET3_TXDESC_GET_GEN(txdesc) ((txdesc)->gen) | |
302 | # define VMXNET3_TXDESC_GET_EOP(txdesc) ((txdesc)->eop) | |
303 | # define VMXNET3_TCD_GET_GEN(tcd) ((tcd)->gen) | |
304 | # define VMXNET3_TCD_GET_TXIDX(tcd) ((tcd)->txdIdx) | |
305 | # define vmxnet3_getRxComp(dstrcd, rcd, tmp) (dstrcd) = (rcd) | |
306 | # define vmxnet3_getRxDesc(dstrxd, rxd, tmp) (dstrxd) = (rxd) | |
307 | ||
308 | #endif /* __BIG_ENDIAN_BITFIELD */ | |
309 | ||
d1a890fa SB |
310 | |
311 | static void | |
312 | vmxnet3_unmap_tx_buf(struct vmxnet3_tx_buf_info *tbi, | |
313 | struct pci_dev *pdev) | |
314 | { | |
315 | if (tbi->map_type == VMXNET3_MAP_SINGLE) | |
b0eb57cb | 316 | dma_unmap_single(&pdev->dev, tbi->dma_addr, tbi->len, |
d1a890fa SB |
317 | PCI_DMA_TODEVICE); |
318 | else if (tbi->map_type == VMXNET3_MAP_PAGE) | |
b0eb57cb | 319 | dma_unmap_page(&pdev->dev, tbi->dma_addr, tbi->len, |
d1a890fa SB |
320 | PCI_DMA_TODEVICE); |
321 | else | |
322 | BUG_ON(tbi->map_type != VMXNET3_MAP_NONE); | |
323 | ||
324 | tbi->map_type = VMXNET3_MAP_NONE; /* to help debugging */ | |
325 | } | |
326 | ||
327 | ||
328 | static int | |
329 | vmxnet3_unmap_pkt(u32 eop_idx, struct vmxnet3_tx_queue *tq, | |
330 | struct pci_dev *pdev, struct vmxnet3_adapter *adapter) | |
331 | { | |
332 | struct sk_buff *skb; | |
333 | int entries = 0; | |
334 | ||
335 | /* no out of order completion */ | |
336 | BUG_ON(tq->buf_info[eop_idx].sop_idx != tq->tx_ring.next2comp); | |
115924b6 | 337 | BUG_ON(VMXNET3_TXDESC_GET_EOP(&(tq->tx_ring.base[eop_idx].txd)) != 1); |
d1a890fa SB |
338 | |
339 | skb = tq->buf_info[eop_idx].skb; | |
340 | BUG_ON(skb == NULL); | |
341 | tq->buf_info[eop_idx].skb = NULL; | |
342 | ||
343 | VMXNET3_INC_RING_IDX_ONLY(eop_idx, tq->tx_ring.size); | |
344 | ||
345 | while (tq->tx_ring.next2comp != eop_idx) { | |
346 | vmxnet3_unmap_tx_buf(tq->buf_info + tq->tx_ring.next2comp, | |
347 | pdev); | |
348 | ||
349 | /* update next2comp w/o tx_lock. Since we are marking more, | |
350 | * instead of less, tx ring entries avail, the worst case is | |
351 | * that the tx routine incorrectly re-queues a pkt due to | |
352 | * insufficient tx ring entries. | |
353 | */ | |
354 | vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring); | |
355 | entries++; | |
356 | } | |
357 | ||
358 | dev_kfree_skb_any(skb); | |
359 | return entries; | |
360 | } | |
361 | ||
362 | ||
363 | static int | |
364 | vmxnet3_tq_tx_complete(struct vmxnet3_tx_queue *tq, | |
365 | struct vmxnet3_adapter *adapter) | |
366 | { | |
367 | int completed = 0; | |
368 | union Vmxnet3_GenericDesc *gdesc; | |
369 | ||
370 | gdesc = tq->comp_ring.base + tq->comp_ring.next2proc; | |
115924b6 | 371 | while (VMXNET3_TCD_GET_GEN(&gdesc->tcd) == tq->comp_ring.gen) { |
f3002c13 | 372 | /* Prevent any &gdesc->tcd field from being (speculatively) |
373 | * read before (&gdesc->tcd)->gen is read. | |
374 | */ | |
375 | dma_rmb(); | |
376 | ||
115924b6 SB |
377 | completed += vmxnet3_unmap_pkt(VMXNET3_TCD_GET_TXIDX( |
378 | &gdesc->tcd), tq, adapter->pdev, | |
379 | adapter); | |
d1a890fa SB |
380 | |
381 | vmxnet3_comp_ring_adv_next2proc(&tq->comp_ring); | |
382 | gdesc = tq->comp_ring.base + tq->comp_ring.next2proc; | |
383 | } | |
384 | ||
385 | if (completed) { | |
386 | spin_lock(&tq->tx_lock); | |
387 | if (unlikely(vmxnet3_tq_stopped(tq, adapter) && | |
388 | vmxnet3_cmd_ring_desc_avail(&tq->tx_ring) > | |
389 | VMXNET3_WAKE_QUEUE_THRESHOLD(tq) && | |
390 | netif_carrier_ok(adapter->netdev))) { | |
391 | vmxnet3_tq_wake(tq, adapter); | |
392 | } | |
393 | spin_unlock(&tq->tx_lock); | |
394 | } | |
395 | return completed; | |
396 | } | |
397 | ||
398 | ||
399 | static void | |
400 | vmxnet3_tq_cleanup(struct vmxnet3_tx_queue *tq, | |
401 | struct vmxnet3_adapter *adapter) | |
402 | { | |
403 | int i; | |
404 | ||
405 | while (tq->tx_ring.next2comp != tq->tx_ring.next2fill) { | |
406 | struct vmxnet3_tx_buf_info *tbi; | |
d1a890fa SB |
407 | |
408 | tbi = tq->buf_info + tq->tx_ring.next2comp; | |
d1a890fa SB |
409 | |
410 | vmxnet3_unmap_tx_buf(tbi, adapter->pdev); | |
411 | if (tbi->skb) { | |
412 | dev_kfree_skb_any(tbi->skb); | |
413 | tbi->skb = NULL; | |
414 | } | |
415 | vmxnet3_cmd_ring_adv_next2comp(&tq->tx_ring); | |
416 | } | |
417 | ||
418 | /* sanity check, verify all buffers are indeed unmapped and freed */ | |
419 | for (i = 0; i < tq->tx_ring.size; i++) { | |
420 | BUG_ON(tq->buf_info[i].skb != NULL || | |
421 | tq->buf_info[i].map_type != VMXNET3_MAP_NONE); | |
422 | } | |
423 | ||
424 | tq->tx_ring.gen = VMXNET3_INIT_GEN; | |
425 | tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0; | |
426 | ||
427 | tq->comp_ring.gen = VMXNET3_INIT_GEN; | |
428 | tq->comp_ring.next2proc = 0; | |
429 | } | |
430 | ||
431 | ||
09c5088e | 432 | static void |
d1a890fa SB |
433 | vmxnet3_tq_destroy(struct vmxnet3_tx_queue *tq, |
434 | struct vmxnet3_adapter *adapter) | |
435 | { | |
436 | if (tq->tx_ring.base) { | |
b0eb57cb AK |
437 | dma_free_coherent(&adapter->pdev->dev, tq->tx_ring.size * |
438 | sizeof(struct Vmxnet3_TxDesc), | |
439 | tq->tx_ring.base, tq->tx_ring.basePA); | |
d1a890fa SB |
440 | tq->tx_ring.base = NULL; |
441 | } | |
442 | if (tq->data_ring.base) { | |
3c8b3efc SK |
443 | dma_free_coherent(&adapter->pdev->dev, |
444 | tq->data_ring.size * tq->txdata_desc_size, | |
b0eb57cb | 445 | tq->data_ring.base, tq->data_ring.basePA); |
d1a890fa SB |
446 | tq->data_ring.base = NULL; |
447 | } | |
448 | if (tq->comp_ring.base) { | |
b0eb57cb AK |
449 | dma_free_coherent(&adapter->pdev->dev, tq->comp_ring.size * |
450 | sizeof(struct Vmxnet3_TxCompDesc), | |
451 | tq->comp_ring.base, tq->comp_ring.basePA); | |
d1a890fa SB |
452 | tq->comp_ring.base = NULL; |
453 | } | |
b0eb57cb AK |
454 | if (tq->buf_info) { |
455 | dma_free_coherent(&adapter->pdev->dev, | |
456 | tq->tx_ring.size * sizeof(tq->buf_info[0]), | |
457 | tq->buf_info, tq->buf_info_pa); | |
458 | tq->buf_info = NULL; | |
459 | } | |
d1a890fa SB |
460 | } |
461 | ||
462 | ||
09c5088e SB |
463 | /* Destroy all tx queues */ |
464 | void | |
465 | vmxnet3_tq_destroy_all(struct vmxnet3_adapter *adapter) | |
466 | { | |
467 | int i; | |
468 | ||
469 | for (i = 0; i < adapter->num_tx_queues; i++) | |
470 | vmxnet3_tq_destroy(&adapter->tx_queue[i], adapter); | |
471 | } | |
472 | ||
473 | ||
d1a890fa SB |
474 | static void |
475 | vmxnet3_tq_init(struct vmxnet3_tx_queue *tq, | |
476 | struct vmxnet3_adapter *adapter) | |
477 | { | |
478 | int i; | |
479 | ||
480 | /* reset the tx ring contents to 0 and reset the tx ring states */ | |
481 | memset(tq->tx_ring.base, 0, tq->tx_ring.size * | |
482 | sizeof(struct Vmxnet3_TxDesc)); | |
483 | tq->tx_ring.next2fill = tq->tx_ring.next2comp = 0; | |
484 | tq->tx_ring.gen = VMXNET3_INIT_GEN; | |
485 | ||
3c8b3efc SK |
486 | memset(tq->data_ring.base, 0, |
487 | tq->data_ring.size * tq->txdata_desc_size); | |
d1a890fa SB |
488 | |
489 | /* reset the tx comp ring contents to 0 and reset comp ring states */ | |
490 | memset(tq->comp_ring.base, 0, tq->comp_ring.size * | |
491 | sizeof(struct Vmxnet3_TxCompDesc)); | |
492 | tq->comp_ring.next2proc = 0; | |
493 | tq->comp_ring.gen = VMXNET3_INIT_GEN; | |
494 | ||
495 | /* reset the bookkeeping data */ | |
496 | memset(tq->buf_info, 0, sizeof(tq->buf_info[0]) * tq->tx_ring.size); | |
497 | for (i = 0; i < tq->tx_ring.size; i++) | |
498 | tq->buf_info[i].map_type = VMXNET3_MAP_NONE; | |
499 | ||
500 | /* stats are not reset */ | |
501 | } | |
502 | ||
503 | ||
504 | static int | |
505 | vmxnet3_tq_create(struct vmxnet3_tx_queue *tq, | |
506 | struct vmxnet3_adapter *adapter) | |
507 | { | |
b0eb57cb AK |
508 | size_t sz; |
509 | ||
d1a890fa SB |
510 | BUG_ON(tq->tx_ring.base || tq->data_ring.base || |
511 | tq->comp_ring.base || tq->buf_info); | |
512 | ||
b0eb57cb AK |
513 | tq->tx_ring.base = dma_alloc_coherent(&adapter->pdev->dev, |
514 | tq->tx_ring.size * sizeof(struct Vmxnet3_TxDesc), | |
515 | &tq->tx_ring.basePA, GFP_KERNEL); | |
d1a890fa | 516 | if (!tq->tx_ring.base) { |
204a6e65 | 517 | netdev_err(adapter->netdev, "failed to allocate tx ring\n"); |
d1a890fa SB |
518 | goto err; |
519 | } | |
520 | ||
b0eb57cb | 521 | tq->data_ring.base = dma_alloc_coherent(&adapter->pdev->dev, |
3c8b3efc | 522 | tq->data_ring.size * tq->txdata_desc_size, |
b0eb57cb | 523 | &tq->data_ring.basePA, GFP_KERNEL); |
d1a890fa | 524 | if (!tq->data_ring.base) { |
3c8b3efc | 525 | netdev_err(adapter->netdev, "failed to allocate tx data ring\n"); |
d1a890fa SB |
526 | goto err; |
527 | } | |
528 | ||
b0eb57cb AK |
529 | tq->comp_ring.base = dma_alloc_coherent(&adapter->pdev->dev, |
530 | tq->comp_ring.size * sizeof(struct Vmxnet3_TxCompDesc), | |
531 | &tq->comp_ring.basePA, GFP_KERNEL); | |
d1a890fa | 532 | if (!tq->comp_ring.base) { |
204a6e65 | 533 | netdev_err(adapter->netdev, "failed to allocate tx comp ring\n"); |
d1a890fa SB |
534 | goto err; |
535 | } | |
536 | ||
b0eb57cb | 537 | sz = tq->tx_ring.size * sizeof(tq->buf_info[0]); |
750afb08 LC |
538 | tq->buf_info = dma_alloc_coherent(&adapter->pdev->dev, sz, |
539 | &tq->buf_info_pa, GFP_KERNEL); | |
e404decb | 540 | if (!tq->buf_info) |
d1a890fa | 541 | goto err; |
d1a890fa SB |
542 | |
543 | return 0; | |
544 | ||
545 | err: | |
546 | vmxnet3_tq_destroy(tq, adapter); | |
547 | return -ENOMEM; | |
548 | } | |
549 | ||
09c5088e SB |
550 | static void |
551 | vmxnet3_tq_cleanup_all(struct vmxnet3_adapter *adapter) | |
552 | { | |
553 | int i; | |
554 | ||
555 | for (i = 0; i < adapter->num_tx_queues; i++) | |
556 | vmxnet3_tq_cleanup(&adapter->tx_queue[i], adapter); | |
557 | } | |
d1a890fa SB |
558 | |
559 | /* | |
560 | * starting from ring->next2fill, allocate rx buffers for the given ring | |
561 | * of the rx queue and update the rx desc. stop after @num_to_alloc buffers | |
562 | * are allocated or allocation fails | |
563 | */ | |
564 | ||
565 | static int | |
566 | vmxnet3_rq_alloc_rx_buf(struct vmxnet3_rx_queue *rq, u32 ring_idx, | |
567 | int num_to_alloc, struct vmxnet3_adapter *adapter) | |
568 | { | |
569 | int num_allocated = 0; | |
570 | struct vmxnet3_rx_buf_info *rbi_base = rq->buf_info[ring_idx]; | |
571 | struct vmxnet3_cmd_ring *ring = &rq->rx_ring[ring_idx]; | |
572 | u32 val; | |
573 | ||
5318d809 | 574 | while (num_allocated <= num_to_alloc) { |
d1a890fa SB |
575 | struct vmxnet3_rx_buf_info *rbi; |
576 | union Vmxnet3_GenericDesc *gd; | |
577 | ||
578 | rbi = rbi_base + ring->next2fill; | |
579 | gd = ring->base + ring->next2fill; | |
580 | ||
581 | if (rbi->buf_type == VMXNET3_RX_BUF_SKB) { | |
582 | if (rbi->skb == NULL) { | |
0d735f13 SH |
583 | rbi->skb = __netdev_alloc_skb_ip_align(adapter->netdev, |
584 | rbi->len, | |
585 | GFP_KERNEL); | |
d1a890fa SB |
586 | if (unlikely(rbi->skb == NULL)) { |
587 | rq->stats.rx_buf_alloc_failure++; | |
588 | break; | |
589 | } | |
d1a890fa | 590 | |
b0eb57cb AK |
591 | rbi->dma_addr = dma_map_single( |
592 | &adapter->pdev->dev, | |
d1a890fa SB |
593 | rbi->skb->data, rbi->len, |
594 | PCI_DMA_FROMDEVICE); | |
5738a09d AK |
595 | if (dma_mapping_error(&adapter->pdev->dev, |
596 | rbi->dma_addr)) { | |
597 | dev_kfree_skb_any(rbi->skb); | |
598 | rq->stats.rx_buf_alloc_failure++; | |
599 | break; | |
600 | } | |
d1a890fa SB |
601 | } else { |
602 | /* rx buffer skipped by the device */ | |
603 | } | |
604 | val = VMXNET3_RXD_BTYPE_HEAD << VMXNET3_RXD_BTYPE_SHIFT; | |
605 | } else { | |
606 | BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_PAGE || | |
607 | rbi->len != PAGE_SIZE); | |
608 | ||
609 | if (rbi->page == NULL) { | |
610 | rbi->page = alloc_page(GFP_ATOMIC); | |
611 | if (unlikely(rbi->page == NULL)) { | |
612 | rq->stats.rx_buf_alloc_failure++; | |
613 | break; | |
614 | } | |
b0eb57cb AK |
615 | rbi->dma_addr = dma_map_page( |
616 | &adapter->pdev->dev, | |
d1a890fa SB |
617 | rbi->page, 0, PAGE_SIZE, |
618 | PCI_DMA_FROMDEVICE); | |
5738a09d AK |
619 | if (dma_mapping_error(&adapter->pdev->dev, |
620 | rbi->dma_addr)) { | |
621 | put_page(rbi->page); | |
622 | rq->stats.rx_buf_alloc_failure++; | |
623 | break; | |
624 | } | |
d1a890fa SB |
625 | } else { |
626 | /* rx buffers skipped by the device */ | |
627 | } | |
628 | val = VMXNET3_RXD_BTYPE_BODY << VMXNET3_RXD_BTYPE_SHIFT; | |
629 | } | |
630 | ||
115924b6 | 631 | gd->rxd.addr = cpu_to_le64(rbi->dma_addr); |
5318d809 | 632 | gd->dword[2] = cpu_to_le32((!ring->gen << VMXNET3_RXD_GEN_SHIFT) |
115924b6 | 633 | | val | rbi->len); |
d1a890fa | 634 | |
5318d809 SB |
635 | /* Fill the last buffer but dont mark it ready, or else the |
636 | * device will think that the queue is full */ | |
637 | if (num_allocated == num_to_alloc) | |
638 | break; | |
639 | ||
640 | gd->dword[2] |= cpu_to_le32(ring->gen << VMXNET3_RXD_GEN_SHIFT); | |
d1a890fa SB |
641 | num_allocated++; |
642 | vmxnet3_cmd_ring_adv_next2fill(ring); | |
643 | } | |
d1a890fa | 644 | |
fdcd79b9 | 645 | netdev_dbg(adapter->netdev, |
69b9a712 SH |
646 | "alloc_rx_buf: %d allocated, next2fill %u, next2comp %u\n", |
647 | num_allocated, ring->next2fill, ring->next2comp); | |
d1a890fa SB |
648 | |
649 | /* so that the device can distinguish a full ring and an empty ring */ | |
650 | BUG_ON(num_allocated != 0 && ring->next2fill == ring->next2comp); | |
651 | ||
652 | return num_allocated; | |
653 | } | |
654 | ||
655 | ||
656 | static void | |
657 | vmxnet3_append_frag(struct sk_buff *skb, struct Vmxnet3_RxCompDesc *rcd, | |
658 | struct vmxnet3_rx_buf_info *rbi) | |
659 | { | |
d7840976 | 660 | skb_frag_t *frag = skb_shinfo(skb)->frags + skb_shinfo(skb)->nr_frags; |
d1a890fa SB |
661 | |
662 | BUG_ON(skb_shinfo(skb)->nr_frags >= MAX_SKB_FRAGS); | |
663 | ||
0e0634d2 | 664 | __skb_frag_set_page(frag, rbi->page); |
b54c9d5b | 665 | skb_frag_off_set(frag, 0); |
9e903e08 ED |
666 | skb_frag_size_set(frag, rcd->len); |
667 | skb->data_len += rcd->len; | |
5e6c355c | 668 | skb->truesize += PAGE_SIZE; |
d1a890fa SB |
669 | skb_shinfo(skb)->nr_frags++; |
670 | } | |
671 | ||
672 | ||
5738a09d | 673 | static int |
d1a890fa SB |
674 | vmxnet3_map_pkt(struct sk_buff *skb, struct vmxnet3_tx_ctx *ctx, |
675 | struct vmxnet3_tx_queue *tq, struct pci_dev *pdev, | |
676 | struct vmxnet3_adapter *adapter) | |
677 | { | |
678 | u32 dw2, len; | |
679 | unsigned long buf_offset; | |
680 | int i; | |
681 | union Vmxnet3_GenericDesc *gdesc; | |
682 | struct vmxnet3_tx_buf_info *tbi = NULL; | |
683 | ||
684 | BUG_ON(ctx->copy_size > skb_headlen(skb)); | |
685 | ||
686 | /* use the previous gen bit for the SOP desc */ | |
687 | dw2 = (tq->tx_ring.gen ^ 0x1) << VMXNET3_TXD_GEN_SHIFT; | |
688 | ||
689 | ctx->sop_txd = tq->tx_ring.base + tq->tx_ring.next2fill; | |
690 | gdesc = ctx->sop_txd; /* both loops below can be skipped */ | |
691 | ||
692 | /* no need to map the buffer if headers are copied */ | |
693 | if (ctx->copy_size) { | |
115924b6 | 694 | ctx->sop_txd->txd.addr = cpu_to_le64(tq->data_ring.basePA + |
d1a890fa | 695 | tq->tx_ring.next2fill * |
3c8b3efc | 696 | tq->txdata_desc_size); |
115924b6 | 697 | ctx->sop_txd->dword[2] = cpu_to_le32(dw2 | ctx->copy_size); |
d1a890fa SB |
698 | ctx->sop_txd->dword[3] = 0; |
699 | ||
700 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
701 | tbi->map_type = VMXNET3_MAP_NONE; | |
702 | ||
fdcd79b9 | 703 | netdev_dbg(adapter->netdev, |
f6965582 | 704 | "txd[%u]: 0x%Lx 0x%x 0x%x\n", |
115924b6 SB |
705 | tq->tx_ring.next2fill, |
706 | le64_to_cpu(ctx->sop_txd->txd.addr), | |
d1a890fa SB |
707 | ctx->sop_txd->dword[2], ctx->sop_txd->dword[3]); |
708 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); | |
709 | ||
710 | /* use the right gen for non-SOP desc */ | |
711 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
712 | } | |
713 | ||
714 | /* linear part can use multiple tx desc if it's big */ | |
715 | len = skb_headlen(skb) - ctx->copy_size; | |
716 | buf_offset = ctx->copy_size; | |
717 | while (len) { | |
718 | u32 buf_size; | |
719 | ||
1f4b1612 BD |
720 | if (len < VMXNET3_MAX_TX_BUF_SIZE) { |
721 | buf_size = len; | |
722 | dw2 |= len; | |
723 | } else { | |
724 | buf_size = VMXNET3_MAX_TX_BUF_SIZE; | |
725 | /* spec says that for TxDesc.len, 0 == 2^14 */ | |
726 | } | |
d1a890fa SB |
727 | |
728 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
729 | tbi->map_type = VMXNET3_MAP_SINGLE; | |
b0eb57cb | 730 | tbi->dma_addr = dma_map_single(&adapter->pdev->dev, |
d1a890fa SB |
731 | skb->data + buf_offset, buf_size, |
732 | PCI_DMA_TODEVICE); | |
5738a09d AK |
733 | if (dma_mapping_error(&adapter->pdev->dev, tbi->dma_addr)) |
734 | return -EFAULT; | |
d1a890fa | 735 | |
1f4b1612 | 736 | tbi->len = buf_size; |
d1a890fa SB |
737 | |
738 | gdesc = tq->tx_ring.base + tq->tx_ring.next2fill; | |
739 | BUG_ON(gdesc->txd.gen == tq->tx_ring.gen); | |
740 | ||
115924b6 | 741 | gdesc->txd.addr = cpu_to_le64(tbi->dma_addr); |
1f4b1612 | 742 | gdesc->dword[2] = cpu_to_le32(dw2); |
d1a890fa SB |
743 | gdesc->dword[3] = 0; |
744 | ||
fdcd79b9 | 745 | netdev_dbg(adapter->netdev, |
f6965582 | 746 | "txd[%u]: 0x%Lx 0x%x 0x%x\n", |
115924b6 SB |
747 | tq->tx_ring.next2fill, le64_to_cpu(gdesc->txd.addr), |
748 | le32_to_cpu(gdesc->dword[2]), gdesc->dword[3]); | |
d1a890fa SB |
749 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); |
750 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
751 | ||
752 | len -= buf_size; | |
753 | buf_offset += buf_size; | |
754 | } | |
755 | ||
756 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
d7840976 | 757 | const skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; |
a4d7e485 | 758 | u32 buf_size; |
d1a890fa | 759 | |
a4d7e485 ED |
760 | buf_offset = 0; |
761 | len = skb_frag_size(frag); | |
762 | while (len) { | |
763 | tbi = tq->buf_info + tq->tx_ring.next2fill; | |
764 | if (len < VMXNET3_MAX_TX_BUF_SIZE) { | |
765 | buf_size = len; | |
766 | dw2 |= len; | |
767 | } else { | |
768 | buf_size = VMXNET3_MAX_TX_BUF_SIZE; | |
769 | /* spec says that for TxDesc.len, 0 == 2^14 */ | |
770 | } | |
771 | tbi->map_type = VMXNET3_MAP_PAGE; | |
772 | tbi->dma_addr = skb_frag_dma_map(&adapter->pdev->dev, frag, | |
773 | buf_offset, buf_size, | |
774 | DMA_TO_DEVICE); | |
5738a09d AK |
775 | if (dma_mapping_error(&adapter->pdev->dev, tbi->dma_addr)) |
776 | return -EFAULT; | |
d1a890fa | 777 | |
a4d7e485 | 778 | tbi->len = buf_size; |
d1a890fa | 779 | |
a4d7e485 ED |
780 | gdesc = tq->tx_ring.base + tq->tx_ring.next2fill; |
781 | BUG_ON(gdesc->txd.gen == tq->tx_ring.gen); | |
d1a890fa | 782 | |
a4d7e485 ED |
783 | gdesc->txd.addr = cpu_to_le64(tbi->dma_addr); |
784 | gdesc->dword[2] = cpu_to_le32(dw2); | |
785 | gdesc->dword[3] = 0; | |
d1a890fa | 786 | |
fdcd79b9 | 787 | netdev_dbg(adapter->netdev, |
8b429468 | 788 | "txd[%u]: 0x%llx %u %u\n", |
a4d7e485 ED |
789 | tq->tx_ring.next2fill, le64_to_cpu(gdesc->txd.addr), |
790 | le32_to_cpu(gdesc->dword[2]), gdesc->dword[3]); | |
791 | vmxnet3_cmd_ring_adv_next2fill(&tq->tx_ring); | |
792 | dw2 = tq->tx_ring.gen << VMXNET3_TXD_GEN_SHIFT; | |
793 | ||
794 | len -= buf_size; | |
795 | buf_offset += buf_size; | |
796 | } | |
d1a890fa SB |
797 | } |
798 | ||
799 | ctx->eop_txd = gdesc; | |
800 | ||
801 | /* set the last buf_info for the pkt */ | |
802 | tbi->skb = skb; | |
803 | tbi->sop_idx = ctx->sop_txd - tq->tx_ring.base; | |
5738a09d AK |
804 | |
805 | return 0; | |
d1a890fa SB |
806 | } |
807 | ||
808 | ||
09c5088e SB |
809 | /* Init all tx queues */ |
810 | static void | |
811 | vmxnet3_tq_init_all(struct vmxnet3_adapter *adapter) | |
812 | { | |
813 | int i; | |
814 | ||
815 | for (i = 0; i < adapter->num_tx_queues; i++) | |
816 | vmxnet3_tq_init(&adapter->tx_queue[i], adapter); | |
817 | } | |
818 | ||
819 | ||
d1a890fa | 820 | /* |
cec05562 | 821 | * parse relevant protocol headers: |
d1a890fa SB |
822 | * For a tso pkt, relevant headers are L2/3/4 including options |
823 | * For a pkt requesting csum offloading, they are L2/3 and may include L4 | |
824 | * if it's a TCP/UDP pkt | |
825 | * | |
826 | * Returns: | |
827 | * -1: error happens during parsing | |
828 | * 0: protocol headers parsed, but too big to be copied | |
829 | * 1: protocol headers parsed and copied | |
830 | * | |
831 | * Other effects: | |
832 | * 1. related *ctx fields are updated. | |
833 | * 2. ctx->copy_size is # of bytes copied | |
cec05562 | 834 | * 3. the portion to be copied is guaranteed to be in the linear part |
d1a890fa SB |
835 | * |
836 | */ | |
837 | static int | |
cec05562 NH |
838 | vmxnet3_parse_hdr(struct sk_buff *skb, struct vmxnet3_tx_queue *tq, |
839 | struct vmxnet3_tx_ctx *ctx, | |
840 | struct vmxnet3_adapter *adapter) | |
d1a890fa | 841 | { |
759c9359 | 842 | u8 protocol = 0; |
d1a890fa | 843 | |
0d0b1672 | 844 | if (ctx->mss) { /* TSO */ |
dacce2be RD |
845 | if (VMXNET3_VERSION_GE_4(adapter) && skb->encapsulation) { |
846 | ctx->l4_offset = skb_inner_transport_offset(skb); | |
847 | ctx->l4_hdr_size = inner_tcp_hdrlen(skb); | |
848 | ctx->copy_size = ctx->l4_offset + ctx->l4_hdr_size; | |
849 | } else { | |
850 | ctx->l4_offset = skb_transport_offset(skb); | |
851 | ctx->l4_hdr_size = tcp_hdrlen(skb); | |
852 | ctx->copy_size = ctx->l4_offset + ctx->l4_hdr_size; | |
853 | } | |
d1a890fa | 854 | } else { |
d1a890fa | 855 | if (skb->ip_summed == CHECKSUM_PARTIAL) { |
dacce2be RD |
856 | /* For encap packets, skb_checksum_start_offset refers |
857 | * to inner L4 offset. Thus, below works for encap as | |
858 | * well as non-encap case | |
859 | */ | |
860 | ctx->l4_offset = skb_checksum_start_offset(skb); | |
d1a890fa | 861 | |
36432797 RD |
862 | if (VMXNET3_VERSION_GE_4(adapter) && |
863 | skb->encapsulation) { | |
864 | struct iphdr *iph = inner_ip_hdr(skb); | |
8bca5d1e | 865 | |
36432797 RD |
866 | if (iph->version == 4) { |
867 | protocol = iph->protocol; | |
868 | } else { | |
869 | const struct ipv6hdr *ipv6h; | |
759c9359 | 870 | |
36432797 RD |
871 | ipv6h = inner_ipv6_hdr(skb); |
872 | protocol = ipv6h->nexthdr; | |
873 | } | |
874 | } else { | |
875 | if (ctx->ipv4) { | |
876 | const struct iphdr *iph = ip_hdr(skb); | |
877 | ||
878 | protocol = iph->protocol; | |
879 | } else if (ctx->ipv6) { | |
880 | const struct ipv6hdr *ipv6h; | |
881 | ||
882 | ipv6h = ipv6_hdr(skb); | |
883 | protocol = ipv6h->nexthdr; | |
884 | } | |
759c9359 SK |
885 | } |
886 | ||
887 | switch (protocol) { | |
888 | case IPPROTO_TCP: | |
8a7f280f RD |
889 | ctx->l4_hdr_size = skb->encapsulation ? inner_tcp_hdrlen(skb) : |
890 | tcp_hdrlen(skb); | |
759c9359 SK |
891 | break; |
892 | case IPPROTO_UDP: | |
893 | ctx->l4_hdr_size = sizeof(struct udphdr); | |
894 | break; | |
895 | default: | |
d1a890fa | 896 | ctx->l4_hdr_size = 0; |
759c9359 | 897 | break; |
d1a890fa | 898 | } |
759c9359 | 899 | |
dacce2be | 900 | ctx->copy_size = min(ctx->l4_offset + |
b203262d | 901 | ctx->l4_hdr_size, skb->len); |
d1a890fa | 902 | } else { |
dacce2be | 903 | ctx->l4_offset = 0; |
d1a890fa SB |
904 | ctx->l4_hdr_size = 0; |
905 | /* copy as much as allowed */ | |
3c8b3efc SK |
906 | ctx->copy_size = min_t(unsigned int, |
907 | tq->txdata_desc_size, | |
908 | skb_headlen(skb)); | |
d1a890fa SB |
909 | } |
910 | ||
c41fcce9 SB |
911 | if (skb->len <= VMXNET3_HDR_COPY_SIZE) |
912 | ctx->copy_size = skb->len; | |
913 | ||
d1a890fa SB |
914 | /* make sure headers are accessible directly */ |
915 | if (unlikely(!pskb_may_pull(skb, ctx->copy_size))) | |
916 | goto err; | |
917 | } | |
918 | ||
3c8b3efc | 919 | if (unlikely(ctx->copy_size > tq->txdata_desc_size)) { |
d1a890fa SB |
920 | tq->stats.oversized_hdr++; |
921 | ctx->copy_size = 0; | |
922 | return 0; | |
923 | } | |
924 | ||
cec05562 NH |
925 | return 1; |
926 | err: | |
927 | return -1; | |
928 | } | |
929 | ||
930 | /* | |
931 | * copy relevant protocol headers to the transmit ring: | |
932 | * For a tso pkt, relevant headers are L2/3/4 including options | |
933 | * For a pkt requesting csum offloading, they are L2/3 and may include L4 | |
934 | * if it's a TCP/UDP pkt | |
935 | * | |
936 | * | |
937 | * Note that this requires that vmxnet3_parse_hdr be called first to set the | |
938 | * appropriate bits in ctx first | |
939 | */ | |
940 | static void | |
941 | vmxnet3_copy_hdr(struct sk_buff *skb, struct vmxnet3_tx_queue *tq, | |
942 | struct vmxnet3_tx_ctx *ctx, | |
943 | struct vmxnet3_adapter *adapter) | |
944 | { | |
945 | struct Vmxnet3_TxDataDesc *tdd; | |
946 | ||
ff2e7d5d SK |
947 | tdd = (struct Vmxnet3_TxDataDesc *)((u8 *)tq->data_ring.base + |
948 | tq->tx_ring.next2fill * | |
949 | tq->txdata_desc_size); | |
d1a890fa SB |
950 | |
951 | memcpy(tdd->data, skb->data, ctx->copy_size); | |
fdcd79b9 | 952 | netdev_dbg(adapter->netdev, |
f6965582 | 953 | "copy %u bytes to dataRing[%u]\n", |
d1a890fa | 954 | ctx->copy_size, tq->tx_ring.next2fill); |
d1a890fa SB |
955 | } |
956 | ||
957 | ||
dacce2be RD |
958 | static void |
959 | vmxnet3_prepare_inner_tso(struct sk_buff *skb, | |
960 | struct vmxnet3_tx_ctx *ctx) | |
961 | { | |
962 | struct tcphdr *tcph = inner_tcp_hdr(skb); | |
963 | struct iphdr *iph = inner_ip_hdr(skb); | |
964 | ||
36432797 | 965 | if (iph->version == 4) { |
dacce2be RD |
966 | iph->check = 0; |
967 | tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, 0, | |
968 | IPPROTO_TCP, 0); | |
36432797 | 969 | } else { |
dacce2be RD |
970 | struct ipv6hdr *iph = inner_ipv6_hdr(skb); |
971 | ||
972 | tcph->check = ~csum_ipv6_magic(&iph->saddr, &iph->daddr, 0, | |
973 | IPPROTO_TCP, 0); | |
974 | } | |
975 | } | |
976 | ||
d1a890fa SB |
977 | static void |
978 | vmxnet3_prepare_tso(struct sk_buff *skb, | |
979 | struct vmxnet3_tx_ctx *ctx) | |
980 | { | |
8bca5d1e ED |
981 | struct tcphdr *tcph = tcp_hdr(skb); |
982 | ||
d1a890fa | 983 | if (ctx->ipv4) { |
8bca5d1e ED |
984 | struct iphdr *iph = ip_hdr(skb); |
985 | ||
d1a890fa SB |
986 | iph->check = 0; |
987 | tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, 0, | |
988 | IPPROTO_TCP, 0); | |
759c9359 | 989 | } else if (ctx->ipv6) { |
091c9f82 | 990 | tcp_v6_gso_csum_prep(skb); |
d1a890fa SB |
991 | } |
992 | } | |
993 | ||
a4d7e485 ED |
994 | static int txd_estimate(const struct sk_buff *skb) |
995 | { | |
996 | int count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) + 1; | |
997 | int i; | |
998 | ||
999 | for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { | |
d7840976 | 1000 | const skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; |
a4d7e485 ED |
1001 | |
1002 | count += VMXNET3_TXD_NEEDED(skb_frag_size(frag)); | |
1003 | } | |
1004 | return count; | |
1005 | } | |
d1a890fa SB |
1006 | |
1007 | /* | |
1008 | * Transmits a pkt thru a given tq | |
1009 | * Returns: | |
1010 | * NETDEV_TX_OK: descriptors are setup successfully | |
25985edc | 1011 | * NETDEV_TX_OK: error occurred, the pkt is dropped |
d1a890fa SB |
1012 | * NETDEV_TX_BUSY: tx ring is full, queue is stopped |
1013 | * | |
1014 | * Side-effects: | |
1015 | * 1. tx ring may be changed | |
1016 | * 2. tq stats may be updated accordingly | |
1017 | * 3. shared->txNumDeferred may be updated | |
1018 | */ | |
1019 | ||
1020 | static int | |
1021 | vmxnet3_tq_xmit(struct sk_buff *skb, struct vmxnet3_tx_queue *tq, | |
1022 | struct vmxnet3_adapter *adapter, struct net_device *netdev) | |
1023 | { | |
1024 | int ret; | |
1025 | u32 count; | |
7a4c003d RD |
1026 | int num_pkts; |
1027 | int tx_num_deferred; | |
d1a890fa SB |
1028 | unsigned long flags; |
1029 | struct vmxnet3_tx_ctx ctx; | |
1030 | union Vmxnet3_GenericDesc *gdesc; | |
115924b6 SB |
1031 | #ifdef __BIG_ENDIAN_BITFIELD |
1032 | /* Use temporary descriptor to avoid touching bits multiple times */ | |
1033 | union Vmxnet3_GenericDesc tempTxDesc; | |
1034 | #endif | |
d1a890fa | 1035 | |
a4d7e485 | 1036 | count = txd_estimate(skb); |
d1a890fa | 1037 | |
72e85c45 | 1038 | ctx.ipv4 = (vlan_get_protocol(skb) == cpu_to_be16(ETH_P_IP)); |
759c9359 | 1039 | ctx.ipv6 = (vlan_get_protocol(skb) == cpu_to_be16(ETH_P_IPV6)); |
d1a890fa SB |
1040 | |
1041 | ctx.mss = skb_shinfo(skb)->gso_size; | |
1042 | if (ctx.mss) { | |
1043 | if (skb_header_cloned(skb)) { | |
1044 | if (unlikely(pskb_expand_head(skb, 0, 0, | |
1045 | GFP_ATOMIC) != 0)) { | |
1046 | tq->stats.drop_tso++; | |
1047 | goto drop_pkt; | |
1048 | } | |
1049 | tq->stats.copy_skb_header++; | |
1050 | } | |
dacce2be RD |
1051 | if (skb->encapsulation) { |
1052 | vmxnet3_prepare_inner_tso(skb, &ctx); | |
1053 | } else { | |
1054 | vmxnet3_prepare_tso(skb, &ctx); | |
1055 | } | |
d1a890fa SB |
1056 | } else { |
1057 | if (unlikely(count > VMXNET3_MAX_TXD_PER_PKT)) { | |
1058 | ||
1059 | /* non-tso pkts must not use more than | |
1060 | * VMXNET3_MAX_TXD_PER_PKT entries | |
1061 | */ | |
1062 | if (skb_linearize(skb) != 0) { | |
1063 | tq->stats.drop_too_many_frags++; | |
1064 | goto drop_pkt; | |
1065 | } | |
1066 | tq->stats.linearized++; | |
1067 | ||
1068 | /* recalculate the # of descriptors to use */ | |
1069 | count = VMXNET3_TXD_NEEDED(skb_headlen(skb)) + 1; | |
1070 | } | |
1071 | } | |
1072 | ||
cec05562 | 1073 | ret = vmxnet3_parse_hdr(skb, tq, &ctx, adapter); |
d1a890fa SB |
1074 | if (ret >= 0) { |
1075 | BUG_ON(ret <= 0 && ctx.copy_size != 0); | |
1076 | /* hdrs parsed, check against other limits */ | |
1077 | if (ctx.mss) { | |
dacce2be | 1078 | if (unlikely(ctx.l4_offset + ctx.l4_hdr_size > |
d1a890fa | 1079 | VMXNET3_MAX_TX_BUF_SIZE)) { |
efc21d95 AB |
1080 | tq->stats.drop_oversized_hdr++; |
1081 | goto drop_pkt; | |
d1a890fa SB |
1082 | } |
1083 | } else { | |
1084 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
dacce2be | 1085 | if (unlikely(ctx.l4_offset + |
d1a890fa SB |
1086 | skb->csum_offset > |
1087 | VMXNET3_MAX_CSUM_OFFSET)) { | |
efc21d95 AB |
1088 | tq->stats.drop_oversized_hdr++; |
1089 | goto drop_pkt; | |
d1a890fa SB |
1090 | } |
1091 | } | |
1092 | } | |
1093 | } else { | |
1094 | tq->stats.drop_hdr_inspect_err++; | |
cec05562 | 1095 | goto drop_pkt; |
d1a890fa SB |
1096 | } |
1097 | ||
cec05562 NH |
1098 | spin_lock_irqsave(&tq->tx_lock, flags); |
1099 | ||
1100 | if (count > vmxnet3_cmd_ring_desc_avail(&tq->tx_ring)) { | |
1101 | tq->stats.tx_ring_full++; | |
1102 | netdev_dbg(adapter->netdev, | |
1103 | "tx queue stopped on %s, next2comp %u" | |
1104 | " next2fill %u\n", adapter->netdev->name, | |
1105 | tq->tx_ring.next2comp, tq->tx_ring.next2fill); | |
1106 | ||
1107 | vmxnet3_tq_stop(tq, adapter); | |
1108 | spin_unlock_irqrestore(&tq->tx_lock, flags); | |
1109 | return NETDEV_TX_BUSY; | |
1110 | } | |
1111 | ||
1112 | ||
1113 | vmxnet3_copy_hdr(skb, tq, &ctx, adapter); | |
1114 | ||
d1a890fa | 1115 | /* fill tx descs related to addr & len */ |
5738a09d AK |
1116 | if (vmxnet3_map_pkt(skb, &ctx, tq, adapter->pdev, adapter)) |
1117 | goto unlock_drop_pkt; | |
d1a890fa SB |
1118 | |
1119 | /* setup the EOP desc */ | |
115924b6 | 1120 | ctx.eop_txd->dword[3] = cpu_to_le32(VMXNET3_TXD_CQ | VMXNET3_TXD_EOP); |
d1a890fa SB |
1121 | |
1122 | /* setup the SOP desc */ | |
115924b6 SB |
1123 | #ifdef __BIG_ENDIAN_BITFIELD |
1124 | gdesc = &tempTxDesc; | |
1125 | gdesc->dword[2] = ctx.sop_txd->dword[2]; | |
1126 | gdesc->dword[3] = ctx.sop_txd->dword[3]; | |
1127 | #else | |
d1a890fa | 1128 | gdesc = ctx.sop_txd; |
115924b6 | 1129 | #endif |
7a4c003d | 1130 | tx_num_deferred = le32_to_cpu(tq->shared->txNumDeferred); |
d1a890fa | 1131 | if (ctx.mss) { |
dacce2be RD |
1132 | if (VMXNET3_VERSION_GE_4(adapter) && skb->encapsulation) { |
1133 | gdesc->txd.hlen = ctx.l4_offset + ctx.l4_hdr_size; | |
1134 | gdesc->txd.om = VMXNET3_OM_ENCAP; | |
1135 | gdesc->txd.msscof = ctx.mss; | |
1136 | ||
1dac3b1b | 1137 | if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_TUNNEL_CSUM) |
dacce2be RD |
1138 | gdesc->txd.oco = 1; |
1139 | } else { | |
1140 | gdesc->txd.hlen = ctx.l4_offset + ctx.l4_hdr_size; | |
1141 | gdesc->txd.om = VMXNET3_OM_TSO; | |
1142 | gdesc->txd.msscof = ctx.mss; | |
1143 | } | |
7a4c003d | 1144 | num_pkts = (skb->len - gdesc->txd.hlen + ctx.mss - 1) / ctx.mss; |
d1a890fa SB |
1145 | } else { |
1146 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
dacce2be RD |
1147 | if (VMXNET3_VERSION_GE_4(adapter) && |
1148 | skb->encapsulation) { | |
1149 | gdesc->txd.hlen = ctx.l4_offset + | |
1150 | ctx.l4_hdr_size; | |
1151 | gdesc->txd.om = VMXNET3_OM_ENCAP; | |
1152 | gdesc->txd.msscof = 0; /* Reserved */ | |
1153 | } else { | |
1154 | gdesc->txd.hlen = ctx.l4_offset; | |
1155 | gdesc->txd.om = VMXNET3_OM_CSUM; | |
1156 | gdesc->txd.msscof = ctx.l4_offset + | |
1157 | skb->csum_offset; | |
1158 | } | |
d1a890fa SB |
1159 | } else { |
1160 | gdesc->txd.om = 0; | |
1161 | gdesc->txd.msscof = 0; | |
1162 | } | |
7a4c003d | 1163 | num_pkts = 1; |
d1a890fa | 1164 | } |
7a4c003d RD |
1165 | le32_add_cpu(&tq->shared->txNumDeferred, num_pkts); |
1166 | tx_num_deferred += num_pkts; | |
d1a890fa | 1167 | |
df8a39de | 1168 | if (skb_vlan_tag_present(skb)) { |
d1a890fa | 1169 | gdesc->txd.ti = 1; |
df8a39de | 1170 | gdesc->txd.tci = skb_vlan_tag_get(skb); |
d1a890fa SB |
1171 | } |
1172 | ||
f3002c13 | 1173 | /* Ensure that the write to (&gdesc->txd)->gen will be observed after |
1174 | * all other writes to &gdesc->txd. | |
1175 | */ | |
1176 | dma_wmb(); | |
1177 | ||
115924b6 SB |
1178 | /* finally flips the GEN bit of the SOP desc. */ |
1179 | gdesc->dword[2] = cpu_to_le32(le32_to_cpu(gdesc->dword[2]) ^ | |
1180 | VMXNET3_TXD_GEN); | |
1181 | #ifdef __BIG_ENDIAN_BITFIELD | |
1182 | /* Finished updating in bitfields of Tx Desc, so write them in original | |
1183 | * place. | |
1184 | */ | |
1185 | vmxnet3_TxDescToLe((struct Vmxnet3_TxDesc *)gdesc, | |
1186 | (struct Vmxnet3_TxDesc *)ctx.sop_txd); | |
1187 | gdesc = ctx.sop_txd; | |
1188 | #endif | |
fdcd79b9 | 1189 | netdev_dbg(adapter->netdev, |
f6965582 | 1190 | "txd[%u]: SOP 0x%Lx 0x%x 0x%x\n", |
c2fd03a0 | 1191 | (u32)(ctx.sop_txd - |
115924b6 SB |
1192 | tq->tx_ring.base), le64_to_cpu(gdesc->txd.addr), |
1193 | le32_to_cpu(gdesc->dword[2]), le32_to_cpu(gdesc->dword[3])); | |
d1a890fa SB |
1194 | |
1195 | spin_unlock_irqrestore(&tq->tx_lock, flags); | |
1196 | ||
7a4c003d | 1197 | if (tx_num_deferred >= le32_to_cpu(tq->shared->txThreshold)) { |
d1a890fa | 1198 | tq->shared->txNumDeferred = 0; |
09c5088e SB |
1199 | VMXNET3_WRITE_BAR0_REG(adapter, |
1200 | VMXNET3_REG_TXPROD + tq->qid * 8, | |
d1a890fa SB |
1201 | tq->tx_ring.next2fill); |
1202 | } | |
d1a890fa SB |
1203 | |
1204 | return NETDEV_TX_OK; | |
1205 | ||
f955e141 DC |
1206 | unlock_drop_pkt: |
1207 | spin_unlock_irqrestore(&tq->tx_lock, flags); | |
d1a890fa SB |
1208 | drop_pkt: |
1209 | tq->stats.drop_total++; | |
b1b71817 | 1210 | dev_kfree_skb_any(skb); |
d1a890fa SB |
1211 | return NETDEV_TX_OK; |
1212 | } | |
1213 | ||
1214 | ||
1215 | static netdev_tx_t | |
1216 | vmxnet3_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
1217 | { | |
1218 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
d1a890fa | 1219 | |
96800ee7 | 1220 | BUG_ON(skb->queue_mapping > adapter->num_tx_queues); |
1221 | return vmxnet3_tq_xmit(skb, | |
1222 | &adapter->tx_queue[skb->queue_mapping], | |
1223 | adapter, netdev); | |
d1a890fa SB |
1224 | } |
1225 | ||
1226 | ||
1227 | static void | |
1228 | vmxnet3_rx_csum(struct vmxnet3_adapter *adapter, | |
1229 | struct sk_buff *skb, | |
1230 | union Vmxnet3_GenericDesc *gdesc) | |
1231 | { | |
a0d2730c | 1232 | if (!gdesc->rcd.cnc && adapter->netdev->features & NETIF_F_RXCSUM) { |
f0d43780 SK |
1233 | if (gdesc->rcd.v4 && |
1234 | (le32_to_cpu(gdesc->dword[3]) & | |
1235 | VMXNET3_RCD_CSUM_OK) == VMXNET3_RCD_CSUM_OK) { | |
1236 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
dacce2be RD |
1237 | WARN_ON_ONCE(!(gdesc->rcd.tcp || gdesc->rcd.udp) && |
1238 | !(le32_to_cpu(gdesc->dword[0]) & | |
1239 | (1UL << VMXNET3_RCD_HDR_INNER_SHIFT))); | |
1240 | WARN_ON_ONCE(gdesc->rcd.frg && | |
1241 | !(le32_to_cpu(gdesc->dword[0]) & | |
1242 | (1UL << VMXNET3_RCD_HDR_INNER_SHIFT))); | |
f0d43780 SK |
1243 | } else if (gdesc->rcd.v6 && (le32_to_cpu(gdesc->dword[3]) & |
1244 | (1 << VMXNET3_RCD_TUC_SHIFT))) { | |
d1a890fa | 1245 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
dacce2be RD |
1246 | WARN_ON_ONCE(!(gdesc->rcd.tcp || gdesc->rcd.udp) && |
1247 | !(le32_to_cpu(gdesc->dword[0]) & | |
1248 | (1UL << VMXNET3_RCD_HDR_INNER_SHIFT))); | |
1249 | WARN_ON_ONCE(gdesc->rcd.frg && | |
1250 | !(le32_to_cpu(gdesc->dword[0]) & | |
1251 | (1UL << VMXNET3_RCD_HDR_INNER_SHIFT))); | |
d1a890fa SB |
1252 | } else { |
1253 | if (gdesc->rcd.csum) { | |
1254 | skb->csum = htons(gdesc->rcd.csum); | |
1255 | skb->ip_summed = CHECKSUM_PARTIAL; | |
1256 | } else { | |
bc8acf2c | 1257 | skb_checksum_none_assert(skb); |
d1a890fa SB |
1258 | } |
1259 | } | |
1260 | } else { | |
bc8acf2c | 1261 | skb_checksum_none_assert(skb); |
d1a890fa SB |
1262 | } |
1263 | } | |
1264 | ||
1265 | ||
1266 | static void | |
1267 | vmxnet3_rx_error(struct vmxnet3_rx_queue *rq, struct Vmxnet3_RxCompDesc *rcd, | |
1268 | struct vmxnet3_rx_ctx *ctx, struct vmxnet3_adapter *adapter) | |
1269 | { | |
1270 | rq->stats.drop_err++; | |
1271 | if (!rcd->fcs) | |
1272 | rq->stats.drop_fcs++; | |
1273 | ||
1274 | rq->stats.drop_total++; | |
1275 | ||
1276 | /* | |
1277 | * We do not unmap and chain the rx buffer to the skb. | |
1278 | * We basically pretend this buffer is not used and will be recycled | |
1279 | * by vmxnet3_rq_alloc_rx_buf() | |
1280 | */ | |
1281 | ||
1282 | /* | |
1283 | * ctx->skb may be NULL if this is the first and the only one | |
1284 | * desc for the pkt | |
1285 | */ | |
1286 | if (ctx->skb) | |
1287 | dev_kfree_skb_irq(ctx->skb); | |
1288 | ||
1289 | ctx->skb = NULL; | |
1290 | } | |
1291 | ||
1292 | ||
45dac1d6 SB |
1293 | static u32 |
1294 | vmxnet3_get_hdr_len(struct vmxnet3_adapter *adapter, struct sk_buff *skb, | |
1295 | union Vmxnet3_GenericDesc *gdesc) | |
1296 | { | |
1297 | u32 hlen, maplen; | |
1298 | union { | |
1299 | void *ptr; | |
1300 | struct ethhdr *eth; | |
65ec0bd1 | 1301 | struct vlan_ethhdr *veth; |
45dac1d6 SB |
1302 | struct iphdr *ipv4; |
1303 | struct ipv6hdr *ipv6; | |
1304 | struct tcphdr *tcp; | |
1305 | } hdr; | |
1306 | BUG_ON(gdesc->rcd.tcp == 0); | |
1307 | ||
1308 | maplen = skb_headlen(skb); | |
1309 | if (unlikely(sizeof(struct iphdr) + sizeof(struct tcphdr) > maplen)) | |
1310 | return 0; | |
1311 | ||
65ec0bd1 RD |
1312 | if (skb->protocol == cpu_to_be16(ETH_P_8021Q) || |
1313 | skb->protocol == cpu_to_be16(ETH_P_8021AD)) | |
1314 | hlen = sizeof(struct vlan_ethhdr); | |
1315 | else | |
1316 | hlen = sizeof(struct ethhdr); | |
1317 | ||
45dac1d6 SB |
1318 | hdr.eth = eth_hdr(skb); |
1319 | if (gdesc->rcd.v4) { | |
65ec0bd1 RD |
1320 | BUG_ON(hdr.eth->h_proto != htons(ETH_P_IP) && |
1321 | hdr.veth->h_vlan_encapsulated_proto != htons(ETH_P_IP)); | |
1322 | hdr.ptr += hlen; | |
45dac1d6 SB |
1323 | BUG_ON(hdr.ipv4->protocol != IPPROTO_TCP); |
1324 | hlen = hdr.ipv4->ihl << 2; | |
1325 | hdr.ptr += hdr.ipv4->ihl << 2; | |
1326 | } else if (gdesc->rcd.v6) { | |
65ec0bd1 RD |
1327 | BUG_ON(hdr.eth->h_proto != htons(ETH_P_IPV6) && |
1328 | hdr.veth->h_vlan_encapsulated_proto != htons(ETH_P_IPV6)); | |
1329 | hdr.ptr += hlen; | |
45dac1d6 SB |
1330 | /* Use an estimated value, since we also need to handle |
1331 | * TSO case. | |
1332 | */ | |
1333 | if (hdr.ipv6->nexthdr != IPPROTO_TCP) | |
1334 | return sizeof(struct ipv6hdr) + sizeof(struct tcphdr); | |
1335 | hlen = sizeof(struct ipv6hdr); | |
1336 | hdr.ptr += sizeof(struct ipv6hdr); | |
1337 | } else { | |
1338 | /* Non-IP pkt, dont estimate header length */ | |
1339 | return 0; | |
1340 | } | |
1341 | ||
1342 | if (hlen + sizeof(struct tcphdr) > maplen) | |
1343 | return 0; | |
1344 | ||
1345 | return (hlen + (hdr.tcp->doff << 2)); | |
1346 | } | |
1347 | ||
d1a890fa SB |
1348 | static int |
1349 | vmxnet3_rq_rx_complete(struct vmxnet3_rx_queue *rq, | |
1350 | struct vmxnet3_adapter *adapter, int quota) | |
1351 | { | |
215faf9c JP |
1352 | static const u32 rxprod_reg[2] = { |
1353 | VMXNET3_REG_RXPROD, VMXNET3_REG_RXPROD2 | |
1354 | }; | |
0769636c | 1355 | u32 num_pkts = 0; |
5318d809 | 1356 | bool skip_page_frags = false; |
d1a890fa SB |
1357 | struct Vmxnet3_RxCompDesc *rcd; |
1358 | struct vmxnet3_rx_ctx *ctx = &rq->rx_ctx; | |
45dac1d6 | 1359 | u16 segCnt = 0, mss = 0; |
115924b6 SB |
1360 | #ifdef __BIG_ENDIAN_BITFIELD |
1361 | struct Vmxnet3_RxDesc rxCmdDesc; | |
1362 | struct Vmxnet3_RxCompDesc rxComp; | |
1363 | #endif | |
1364 | vmxnet3_getRxComp(rcd, &rq->comp_ring.base[rq->comp_ring.next2proc].rcd, | |
1365 | &rxComp); | |
d1a890fa SB |
1366 | while (rcd->gen == rq->comp_ring.gen) { |
1367 | struct vmxnet3_rx_buf_info *rbi; | |
5318d809 SB |
1368 | struct sk_buff *skb, *new_skb = NULL; |
1369 | struct page *new_page = NULL; | |
5738a09d | 1370 | dma_addr_t new_dma_addr; |
d1a890fa SB |
1371 | int num_to_alloc; |
1372 | struct Vmxnet3_RxDesc *rxd; | |
1373 | u32 idx, ring_idx; | |
5318d809 | 1374 | struct vmxnet3_cmd_ring *ring = NULL; |
0769636c | 1375 | if (num_pkts >= quota) { |
d1a890fa SB |
1376 | /* we may stop even before we see the EOP desc of |
1377 | * the current pkt | |
1378 | */ | |
1379 | break; | |
1380 | } | |
f3002c13 | 1381 | |
1382 | /* Prevent any rcd field from being (speculatively) read before | |
1383 | * rcd->gen is read. | |
1384 | */ | |
1385 | dma_rmb(); | |
1386 | ||
50a5ce3e SK |
1387 | BUG_ON(rcd->rqID != rq->qid && rcd->rqID != rq->qid2 && |
1388 | rcd->rqID != rq->dataRingQid); | |
d1a890fa | 1389 | idx = rcd->rxdIdx; |
50a5ce3e | 1390 | ring_idx = VMXNET3_GET_RING_IDX(adapter, rcd->rqID); |
5318d809 | 1391 | ring = rq->rx_ring + ring_idx; |
115924b6 SB |
1392 | vmxnet3_getRxDesc(rxd, &rq->rx_ring[ring_idx].base[idx].rxd, |
1393 | &rxCmdDesc); | |
d1a890fa SB |
1394 | rbi = rq->buf_info[ring_idx] + idx; |
1395 | ||
115924b6 SB |
1396 | BUG_ON(rxd->addr != rbi->dma_addr || |
1397 | rxd->len != rbi->len); | |
d1a890fa SB |
1398 | |
1399 | if (unlikely(rcd->eop && rcd->err)) { | |
1400 | vmxnet3_rx_error(rq, rcd, ctx, adapter); | |
1401 | goto rcd_done; | |
1402 | } | |
1403 | ||
1404 | if (rcd->sop) { /* first buf of the pkt */ | |
50a5ce3e SK |
1405 | bool rxDataRingUsed; |
1406 | u16 len; | |
1407 | ||
d1a890fa | 1408 | BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_HEAD || |
50a5ce3e SK |
1409 | (rcd->rqID != rq->qid && |
1410 | rcd->rqID != rq->dataRingQid)); | |
d1a890fa SB |
1411 | |
1412 | BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_SKB); | |
1413 | BUG_ON(ctx->skb != NULL || rbi->skb == NULL); | |
1414 | ||
1415 | if (unlikely(rcd->len == 0)) { | |
1416 | /* Pretend the rx buffer is skipped. */ | |
1417 | BUG_ON(!(rcd->sop && rcd->eop)); | |
fdcd79b9 | 1418 | netdev_dbg(adapter->netdev, |
f6965582 | 1419 | "rxRing[%u][%u] 0 length\n", |
d1a890fa SB |
1420 | ring_idx, idx); |
1421 | goto rcd_done; | |
1422 | } | |
1423 | ||
5318d809 | 1424 | skip_page_frags = false; |
d1a890fa | 1425 | ctx->skb = rbi->skb; |
50a5ce3e SK |
1426 | |
1427 | rxDataRingUsed = | |
1428 | VMXNET3_RX_DATA_RING(adapter, rcd->rqID); | |
1429 | len = rxDataRingUsed ? rcd->len : rbi->len; | |
0d735f13 | 1430 | new_skb = netdev_alloc_skb_ip_align(adapter->netdev, |
50a5ce3e | 1431 | len); |
5318d809 SB |
1432 | if (new_skb == NULL) { |
1433 | /* Skb allocation failed, do not handover this | |
1434 | * skb to stack. Reuse it. Drop the existing pkt | |
1435 | */ | |
1436 | rq->stats.rx_buf_alloc_failure++; | |
1437 | ctx->skb = NULL; | |
1438 | rq->stats.drop_total++; | |
1439 | skip_page_frags = true; | |
1440 | goto rcd_done; | |
1441 | } | |
d1a890fa | 1442 | |
50a5ce3e SK |
1443 | if (rxDataRingUsed) { |
1444 | size_t sz; | |
1445 | ||
1446 | BUG_ON(rcd->len > rq->data_ring.desc_size); | |
1447 | ||
1448 | ctx->skb = new_skb; | |
1449 | sz = rcd->rxdIdx * rq->data_ring.desc_size; | |
1450 | memcpy(new_skb->data, | |
1451 | &rq->data_ring.base[sz], rcd->len); | |
1452 | } else { | |
1453 | ctx->skb = rbi->skb; | |
1454 | ||
1455 | new_dma_addr = | |
1456 | dma_map_single(&adapter->pdev->dev, | |
1457 | new_skb->data, rbi->len, | |
1458 | PCI_DMA_FROMDEVICE); | |
1459 | if (dma_mapping_error(&adapter->pdev->dev, | |
1460 | new_dma_addr)) { | |
1461 | dev_kfree_skb(new_skb); | |
1462 | /* Skb allocation failed, do not | |
1463 | * handover this skb to stack. Reuse | |
1464 | * it. Drop the existing pkt. | |
1465 | */ | |
1466 | rq->stats.rx_buf_alloc_failure++; | |
1467 | ctx->skb = NULL; | |
1468 | rq->stats.drop_total++; | |
1469 | skip_page_frags = true; | |
1470 | goto rcd_done; | |
1471 | } | |
1472 | ||
1473 | dma_unmap_single(&adapter->pdev->dev, | |
1474 | rbi->dma_addr, | |
1475 | rbi->len, | |
1476 | PCI_DMA_FROMDEVICE); | |
1477 | ||
1478 | /* Immediate refill */ | |
1479 | rbi->skb = new_skb; | |
1480 | rbi->dma_addr = new_dma_addr; | |
1481 | rxd->addr = cpu_to_le64(rbi->dma_addr); | |
1482 | rxd->len = rbi->len; | |
1483 | } | |
d1a890fa | 1484 | |
7db11f75 SH |
1485 | #ifdef VMXNET3_RSS |
1486 | if (rcd->rssType != VMXNET3_RCD_RSS_TYPE_NONE && | |
1487 | (adapter->netdev->features & NETIF_F_RXHASH)) | |
2c15a154 MS |
1488 | skb_set_hash(ctx->skb, |
1489 | le32_to_cpu(rcd->rssHash), | |
0b680703 | 1490 | PKT_HASH_TYPE_L3); |
7db11f75 | 1491 | #endif |
d1a890fa | 1492 | skb_put(ctx->skb, rcd->len); |
5318d809 | 1493 | |
190af10f | 1494 | if (VMXNET3_VERSION_GE_2(adapter) && |
45dac1d6 SB |
1495 | rcd->type == VMXNET3_CDTYPE_RXCOMP_LRO) { |
1496 | struct Vmxnet3_RxCompDescExt *rcdlro; | |
1497 | rcdlro = (struct Vmxnet3_RxCompDescExt *)rcd; | |
1498 | ||
1499 | segCnt = rcdlro->segCnt; | |
50219538 | 1500 | WARN_ON_ONCE(segCnt == 0); |
45dac1d6 SB |
1501 | mss = rcdlro->mss; |
1502 | if (unlikely(segCnt <= 1)) | |
1503 | segCnt = 0; | |
1504 | } else { | |
1505 | segCnt = 0; | |
1506 | } | |
d1a890fa | 1507 | } else { |
5318d809 SB |
1508 | BUG_ON(ctx->skb == NULL && !skip_page_frags); |
1509 | ||
d1a890fa | 1510 | /* non SOP buffer must be type 1 in most cases */ |
5318d809 SB |
1511 | BUG_ON(rbi->buf_type != VMXNET3_RX_BUF_PAGE); |
1512 | BUG_ON(rxd->btype != VMXNET3_RXD_BTYPE_BODY); | |
d1a890fa | 1513 | |
5318d809 SB |
1514 | /* If an sop buffer was dropped, skip all |
1515 | * following non-sop fragments. They will be reused. | |
1516 | */ | |
1517 | if (skip_page_frags) | |
1518 | goto rcd_done; | |
d1a890fa | 1519 | |
c41fcce9 SB |
1520 | if (rcd->len) { |
1521 | new_page = alloc_page(GFP_ATOMIC); | |
5318d809 SB |
1522 | /* Replacement page frag could not be allocated. |
1523 | * Reuse this page. Drop the pkt and free the | |
1524 | * skb which contained this page as a frag. Skip | |
1525 | * processing all the following non-sop frags. | |
d1a890fa | 1526 | */ |
c41fcce9 SB |
1527 | if (unlikely(!new_page)) { |
1528 | rq->stats.rx_buf_alloc_failure++; | |
1529 | dev_kfree_skb(ctx->skb); | |
1530 | ctx->skb = NULL; | |
1531 | skip_page_frags = true; | |
1532 | goto rcd_done; | |
1533 | } | |
58caf637 SK |
1534 | new_dma_addr = dma_map_page(&adapter->pdev->dev, |
1535 | new_page, | |
1536 | 0, PAGE_SIZE, | |
1537 | PCI_DMA_FROMDEVICE); | |
5738a09d AK |
1538 | if (dma_mapping_error(&adapter->pdev->dev, |
1539 | new_dma_addr)) { | |
1540 | put_page(new_page); | |
1541 | rq->stats.rx_buf_alloc_failure++; | |
1542 | dev_kfree_skb(ctx->skb); | |
1543 | ctx->skb = NULL; | |
1544 | skip_page_frags = true; | |
1545 | goto rcd_done; | |
1546 | } | |
5318d809 | 1547 | |
b0eb57cb | 1548 | dma_unmap_page(&adapter->pdev->dev, |
5318d809 SB |
1549 | rbi->dma_addr, rbi->len, |
1550 | PCI_DMA_FROMDEVICE); | |
1551 | ||
1552 | vmxnet3_append_frag(ctx->skb, rcd, rbi); | |
5318d809 | 1553 | |
c41fcce9 SB |
1554 | /* Immediate refill */ |
1555 | rbi->page = new_page; | |
5738a09d | 1556 | rbi->dma_addr = new_dma_addr; |
c41fcce9 SB |
1557 | rxd->addr = cpu_to_le64(rbi->dma_addr); |
1558 | rxd->len = rbi->len; | |
1559 | } | |
d1a890fa SB |
1560 | } |
1561 | ||
5318d809 | 1562 | |
d1a890fa SB |
1563 | skb = ctx->skb; |
1564 | if (rcd->eop) { | |
45dac1d6 | 1565 | u32 mtu = adapter->netdev->mtu; |
d1a890fa | 1566 | skb->len += skb->data_len; |
d1a890fa SB |
1567 | |
1568 | vmxnet3_rx_csum(adapter, skb, | |
1569 | (union Vmxnet3_GenericDesc *)rcd); | |
1570 | skb->protocol = eth_type_trans(skb, adapter->netdev); | |
034f4057 RD |
1571 | if (!rcd->tcp || |
1572 | !(adapter->netdev->features & NETIF_F_LRO)) | |
45dac1d6 SB |
1573 | goto not_lro; |
1574 | ||
1575 | if (segCnt != 0 && mss != 0) { | |
1576 | skb_shinfo(skb)->gso_type = rcd->v4 ? | |
1577 | SKB_GSO_TCPV4 : SKB_GSO_TCPV6; | |
1578 | skb_shinfo(skb)->gso_size = mss; | |
1579 | skb_shinfo(skb)->gso_segs = segCnt; | |
1580 | } else if (segCnt != 0 || skb->len > mtu) { | |
1581 | u32 hlen; | |
1582 | ||
1583 | hlen = vmxnet3_get_hdr_len(adapter, skb, | |
1584 | (union Vmxnet3_GenericDesc *)rcd); | |
1585 | if (hlen == 0) | |
1586 | goto not_lro; | |
1587 | ||
1588 | skb_shinfo(skb)->gso_type = | |
1589 | rcd->v4 ? SKB_GSO_TCPV4 : SKB_GSO_TCPV6; | |
1590 | if (segCnt != 0) { | |
1591 | skb_shinfo(skb)->gso_segs = segCnt; | |
1592 | skb_shinfo(skb)->gso_size = | |
1593 | DIV_ROUND_UP(skb->len - | |
1594 | hlen, segCnt); | |
1595 | } else { | |
1596 | skb_shinfo(skb)->gso_size = mtu - hlen; | |
1597 | } | |
1598 | } | |
1599 | not_lro: | |
72e85c45 | 1600 | if (unlikely(rcd->ts)) |
86a9bad3 | 1601 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rcd->tci); |
72e85c45 | 1602 | |
213ade8c JG |
1603 | if (adapter->netdev->features & NETIF_F_LRO) |
1604 | netif_receive_skb(skb); | |
1605 | else | |
1606 | napi_gro_receive(&rq->napi, skb); | |
d1a890fa | 1607 | |
d1a890fa | 1608 | ctx->skb = NULL; |
0769636c | 1609 | num_pkts++; |
d1a890fa SB |
1610 | } |
1611 | ||
1612 | rcd_done: | |
5318d809 SB |
1613 | /* device may have skipped some rx descs */ |
1614 | ring->next2comp = idx; | |
1615 | num_to_alloc = vmxnet3_cmd_ring_desc_avail(ring); | |
1616 | ring = rq->rx_ring + ring_idx; | |
f3002c13 | 1617 | |
1618 | /* Ensure that the writes to rxd->gen bits will be observed | |
1619 | * after all other writes to rxd objects. | |
1620 | */ | |
1621 | dma_wmb(); | |
1622 | ||
5318d809 SB |
1623 | while (num_to_alloc) { |
1624 | vmxnet3_getRxDesc(rxd, &ring->base[ring->next2fill].rxd, | |
1625 | &rxCmdDesc); | |
1626 | BUG_ON(!rxd->addr); | |
1627 | ||
1628 | /* Recv desc is ready to be used by the device */ | |
1629 | rxd->gen = ring->gen; | |
1630 | vmxnet3_cmd_ring_adv_next2fill(ring); | |
1631 | num_to_alloc--; | |
1632 | } | |
1633 | ||
1634 | /* if needed, update the register */ | |
1635 | if (unlikely(rq->shared->updateRxProd)) { | |
1636 | VMXNET3_WRITE_BAR0_REG(adapter, | |
96800ee7 | 1637 | rxprod_reg[ring_idx] + rq->qid * 8, |
1638 | ring->next2fill); | |
d1a890fa SB |
1639 | } |
1640 | ||
1641 | vmxnet3_comp_ring_adv_next2proc(&rq->comp_ring); | |
115924b6 | 1642 | vmxnet3_getRxComp(rcd, |
96800ee7 | 1643 | &rq->comp_ring.base[rq->comp_ring.next2proc].rcd, &rxComp); |
d1a890fa SB |
1644 | } |
1645 | ||
0769636c | 1646 | return num_pkts; |
d1a890fa SB |
1647 | } |
1648 | ||
1649 | ||
1650 | static void | |
1651 | vmxnet3_rq_cleanup(struct vmxnet3_rx_queue *rq, | |
1652 | struct vmxnet3_adapter *adapter) | |
1653 | { | |
1654 | u32 i, ring_idx; | |
1655 | struct Vmxnet3_RxDesc *rxd; | |
1656 | ||
1657 | for (ring_idx = 0; ring_idx < 2; ring_idx++) { | |
1658 | for (i = 0; i < rq->rx_ring[ring_idx].size; i++) { | |
115924b6 SB |
1659 | #ifdef __BIG_ENDIAN_BITFIELD |
1660 | struct Vmxnet3_RxDesc rxDesc; | |
1661 | #endif | |
1662 | vmxnet3_getRxDesc(rxd, | |
1663 | &rq->rx_ring[ring_idx].base[i].rxd, &rxDesc); | |
d1a890fa SB |
1664 | |
1665 | if (rxd->btype == VMXNET3_RXD_BTYPE_HEAD && | |
1666 | rq->buf_info[ring_idx][i].skb) { | |
b0eb57cb | 1667 | dma_unmap_single(&adapter->pdev->dev, rxd->addr, |
d1a890fa SB |
1668 | rxd->len, PCI_DMA_FROMDEVICE); |
1669 | dev_kfree_skb(rq->buf_info[ring_idx][i].skb); | |
1670 | rq->buf_info[ring_idx][i].skb = NULL; | |
1671 | } else if (rxd->btype == VMXNET3_RXD_BTYPE_BODY && | |
1672 | rq->buf_info[ring_idx][i].page) { | |
b0eb57cb | 1673 | dma_unmap_page(&adapter->pdev->dev, rxd->addr, |
d1a890fa SB |
1674 | rxd->len, PCI_DMA_FROMDEVICE); |
1675 | put_page(rq->buf_info[ring_idx][i].page); | |
1676 | rq->buf_info[ring_idx][i].page = NULL; | |
1677 | } | |
1678 | } | |
1679 | ||
1680 | rq->rx_ring[ring_idx].gen = VMXNET3_INIT_GEN; | |
1681 | rq->rx_ring[ring_idx].next2fill = | |
1682 | rq->rx_ring[ring_idx].next2comp = 0; | |
d1a890fa SB |
1683 | } |
1684 | ||
1685 | rq->comp_ring.gen = VMXNET3_INIT_GEN; | |
1686 | rq->comp_ring.next2proc = 0; | |
1687 | } | |
1688 | ||
1689 | ||
09c5088e SB |
1690 | static void |
1691 | vmxnet3_rq_cleanup_all(struct vmxnet3_adapter *adapter) | |
1692 | { | |
1693 | int i; | |
1694 | ||
1695 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1696 | vmxnet3_rq_cleanup(&adapter->rx_queue[i], adapter); | |
1697 | } | |
1698 | ||
1699 | ||
280b74f7 | 1700 | static void vmxnet3_rq_destroy(struct vmxnet3_rx_queue *rq, |
1701 | struct vmxnet3_adapter *adapter) | |
d1a890fa SB |
1702 | { |
1703 | int i; | |
1704 | int j; | |
1705 | ||
1706 | /* all rx buffers must have already been freed */ | |
1707 | for (i = 0; i < 2; i++) { | |
1708 | if (rq->buf_info[i]) { | |
1709 | for (j = 0; j < rq->rx_ring[i].size; j++) | |
1710 | BUG_ON(rq->buf_info[i][j].page != NULL); | |
1711 | } | |
1712 | } | |
1713 | ||
1714 | ||
d1a890fa SB |
1715 | for (i = 0; i < 2; i++) { |
1716 | if (rq->rx_ring[i].base) { | |
b0eb57cb AK |
1717 | dma_free_coherent(&adapter->pdev->dev, |
1718 | rq->rx_ring[i].size | |
1719 | * sizeof(struct Vmxnet3_RxDesc), | |
1720 | rq->rx_ring[i].base, | |
1721 | rq->rx_ring[i].basePA); | |
d1a890fa SB |
1722 | rq->rx_ring[i].base = NULL; |
1723 | } | |
d1a890fa SB |
1724 | } |
1725 | ||
50a5ce3e SK |
1726 | if (rq->data_ring.base) { |
1727 | dma_free_coherent(&adapter->pdev->dev, | |
1728 | rq->rx_ring[0].size * rq->data_ring.desc_size, | |
1729 | rq->data_ring.base, rq->data_ring.basePA); | |
1730 | rq->data_ring.base = NULL; | |
1731 | } | |
1732 | ||
d1a890fa | 1733 | if (rq->comp_ring.base) { |
b0eb57cb AK |
1734 | dma_free_coherent(&adapter->pdev->dev, rq->comp_ring.size |
1735 | * sizeof(struct Vmxnet3_RxCompDesc), | |
1736 | rq->comp_ring.base, rq->comp_ring.basePA); | |
d1a890fa SB |
1737 | rq->comp_ring.base = NULL; |
1738 | } | |
b0eb57cb AK |
1739 | |
1740 | if (rq->buf_info[0]) { | |
1741 | size_t sz = sizeof(struct vmxnet3_rx_buf_info) * | |
1742 | (rq->rx_ring[0].size + rq->rx_ring[1].size); | |
1743 | dma_free_coherent(&adapter->pdev->dev, sz, rq->buf_info[0], | |
1744 | rq->buf_info_pa); | |
848b1598 | 1745 | rq->buf_info[0] = rq->buf_info[1] = NULL; |
b0eb57cb | 1746 | } |
d1a890fa SB |
1747 | } |
1748 | ||
bb40aca7 | 1749 | static void |
50a5ce3e SK |
1750 | vmxnet3_rq_destroy_all_rxdataring(struct vmxnet3_adapter *adapter) |
1751 | { | |
1752 | int i; | |
1753 | ||
1754 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1755 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; | |
1756 | ||
1757 | if (rq->data_ring.base) { | |
1758 | dma_free_coherent(&adapter->pdev->dev, | |
1759 | (rq->rx_ring[0].size * | |
1760 | rq->data_ring.desc_size), | |
1761 | rq->data_ring.base, | |
1762 | rq->data_ring.basePA); | |
1763 | rq->data_ring.base = NULL; | |
1764 | rq->data_ring.desc_size = 0; | |
1765 | } | |
1766 | } | |
1767 | } | |
d1a890fa SB |
1768 | |
1769 | static int | |
1770 | vmxnet3_rq_init(struct vmxnet3_rx_queue *rq, | |
1771 | struct vmxnet3_adapter *adapter) | |
1772 | { | |
1773 | int i; | |
1774 | ||
1775 | /* initialize buf_info */ | |
1776 | for (i = 0; i < rq->rx_ring[0].size; i++) { | |
1777 | ||
1778 | /* 1st buf for a pkt is skbuff */ | |
1779 | if (i % adapter->rx_buf_per_pkt == 0) { | |
1780 | rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_SKB; | |
1781 | rq->buf_info[0][i].len = adapter->skb_buf_size; | |
1782 | } else { /* subsequent bufs for a pkt is frag */ | |
1783 | rq->buf_info[0][i].buf_type = VMXNET3_RX_BUF_PAGE; | |
1784 | rq->buf_info[0][i].len = PAGE_SIZE; | |
1785 | } | |
1786 | } | |
1787 | for (i = 0; i < rq->rx_ring[1].size; i++) { | |
1788 | rq->buf_info[1][i].buf_type = VMXNET3_RX_BUF_PAGE; | |
1789 | rq->buf_info[1][i].len = PAGE_SIZE; | |
1790 | } | |
1791 | ||
1792 | /* reset internal state and allocate buffers for both rings */ | |
1793 | for (i = 0; i < 2; i++) { | |
1794 | rq->rx_ring[i].next2fill = rq->rx_ring[i].next2comp = 0; | |
d1a890fa SB |
1795 | |
1796 | memset(rq->rx_ring[i].base, 0, rq->rx_ring[i].size * | |
1797 | sizeof(struct Vmxnet3_RxDesc)); | |
1798 | rq->rx_ring[i].gen = VMXNET3_INIT_GEN; | |
1799 | } | |
1800 | if (vmxnet3_rq_alloc_rx_buf(rq, 0, rq->rx_ring[0].size - 1, | |
1801 | adapter) == 0) { | |
1802 | /* at least has 1 rx buffer for the 1st ring */ | |
1803 | return -ENOMEM; | |
1804 | } | |
1805 | vmxnet3_rq_alloc_rx_buf(rq, 1, rq->rx_ring[1].size - 1, adapter); | |
1806 | ||
1807 | /* reset the comp ring */ | |
1808 | rq->comp_ring.next2proc = 0; | |
1809 | memset(rq->comp_ring.base, 0, rq->comp_ring.size * | |
1810 | sizeof(struct Vmxnet3_RxCompDesc)); | |
1811 | rq->comp_ring.gen = VMXNET3_INIT_GEN; | |
1812 | ||
1813 | /* reset rxctx */ | |
1814 | rq->rx_ctx.skb = NULL; | |
1815 | ||
1816 | /* stats are not reset */ | |
1817 | return 0; | |
1818 | } | |
1819 | ||
1820 | ||
09c5088e SB |
1821 | static int |
1822 | vmxnet3_rq_init_all(struct vmxnet3_adapter *adapter) | |
1823 | { | |
1824 | int i, err = 0; | |
1825 | ||
1826 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1827 | err = vmxnet3_rq_init(&adapter->rx_queue[i], adapter); | |
1828 | if (unlikely(err)) { | |
1829 | dev_err(&adapter->netdev->dev, "%s: failed to " | |
1830 | "initialize rx queue%i\n", | |
1831 | adapter->netdev->name, i); | |
1832 | break; | |
1833 | } | |
1834 | } | |
1835 | return err; | |
1836 | ||
1837 | } | |
1838 | ||
1839 | ||
d1a890fa SB |
1840 | static int |
1841 | vmxnet3_rq_create(struct vmxnet3_rx_queue *rq, struct vmxnet3_adapter *adapter) | |
1842 | { | |
1843 | int i; | |
1844 | size_t sz; | |
1845 | struct vmxnet3_rx_buf_info *bi; | |
1846 | ||
1847 | for (i = 0; i < 2; i++) { | |
1848 | ||
1849 | sz = rq->rx_ring[i].size * sizeof(struct Vmxnet3_RxDesc); | |
b0eb57cb AK |
1850 | rq->rx_ring[i].base = dma_alloc_coherent( |
1851 | &adapter->pdev->dev, sz, | |
1852 | &rq->rx_ring[i].basePA, | |
1853 | GFP_KERNEL); | |
d1a890fa | 1854 | if (!rq->rx_ring[i].base) { |
204a6e65 SH |
1855 | netdev_err(adapter->netdev, |
1856 | "failed to allocate rx ring %d\n", i); | |
d1a890fa SB |
1857 | goto err; |
1858 | } | |
1859 | } | |
1860 | ||
50a5ce3e SK |
1861 | if ((adapter->rxdataring_enabled) && (rq->data_ring.desc_size != 0)) { |
1862 | sz = rq->rx_ring[0].size * rq->data_ring.desc_size; | |
1863 | rq->data_ring.base = | |
1864 | dma_alloc_coherent(&adapter->pdev->dev, sz, | |
1865 | &rq->data_ring.basePA, | |
1866 | GFP_KERNEL); | |
1867 | if (!rq->data_ring.base) { | |
1868 | netdev_err(adapter->netdev, | |
1869 | "rx data ring will be disabled\n"); | |
1870 | adapter->rxdataring_enabled = false; | |
1871 | } | |
1872 | } else { | |
1873 | rq->data_ring.base = NULL; | |
1874 | rq->data_ring.desc_size = 0; | |
1875 | } | |
1876 | ||
d1a890fa | 1877 | sz = rq->comp_ring.size * sizeof(struct Vmxnet3_RxCompDesc); |
b0eb57cb AK |
1878 | rq->comp_ring.base = dma_alloc_coherent(&adapter->pdev->dev, sz, |
1879 | &rq->comp_ring.basePA, | |
1880 | GFP_KERNEL); | |
d1a890fa | 1881 | if (!rq->comp_ring.base) { |
204a6e65 | 1882 | netdev_err(adapter->netdev, "failed to allocate rx comp ring\n"); |
d1a890fa SB |
1883 | goto err; |
1884 | } | |
1885 | ||
1886 | sz = sizeof(struct vmxnet3_rx_buf_info) * (rq->rx_ring[0].size + | |
1887 | rq->rx_ring[1].size); | |
750afb08 LC |
1888 | bi = dma_alloc_coherent(&adapter->pdev->dev, sz, &rq->buf_info_pa, |
1889 | GFP_KERNEL); | |
e404decb | 1890 | if (!bi) |
d1a890fa | 1891 | goto err; |
e404decb | 1892 | |
d1a890fa SB |
1893 | rq->buf_info[0] = bi; |
1894 | rq->buf_info[1] = bi + rq->rx_ring[0].size; | |
1895 | ||
1896 | return 0; | |
1897 | ||
1898 | err: | |
1899 | vmxnet3_rq_destroy(rq, adapter); | |
1900 | return -ENOMEM; | |
1901 | } | |
1902 | ||
1903 | ||
09c5088e SB |
1904 | static int |
1905 | vmxnet3_rq_create_all(struct vmxnet3_adapter *adapter) | |
1906 | { | |
1907 | int i, err = 0; | |
1908 | ||
50a5ce3e SK |
1909 | adapter->rxdataring_enabled = VMXNET3_VERSION_GE_3(adapter); |
1910 | ||
09c5088e SB |
1911 | for (i = 0; i < adapter->num_rx_queues; i++) { |
1912 | err = vmxnet3_rq_create(&adapter->rx_queue[i], adapter); | |
1913 | if (unlikely(err)) { | |
1914 | dev_err(&adapter->netdev->dev, | |
1915 | "%s: failed to create rx queue%i\n", | |
1916 | adapter->netdev->name, i); | |
1917 | goto err_out; | |
1918 | } | |
1919 | } | |
50a5ce3e SK |
1920 | |
1921 | if (!adapter->rxdataring_enabled) | |
1922 | vmxnet3_rq_destroy_all_rxdataring(adapter); | |
1923 | ||
09c5088e SB |
1924 | return err; |
1925 | err_out: | |
1926 | vmxnet3_rq_destroy_all(adapter); | |
1927 | return err; | |
1928 | ||
1929 | } | |
1930 | ||
1931 | /* Multiple queue aware polling function for tx and rx */ | |
1932 | ||
d1a890fa SB |
1933 | static int |
1934 | vmxnet3_do_poll(struct vmxnet3_adapter *adapter, int budget) | |
1935 | { | |
09c5088e | 1936 | int rcd_done = 0, i; |
d1a890fa SB |
1937 | if (unlikely(adapter->shared->ecr)) |
1938 | vmxnet3_process_events(adapter); | |
09c5088e SB |
1939 | for (i = 0; i < adapter->num_tx_queues; i++) |
1940 | vmxnet3_tq_tx_complete(&adapter->tx_queue[i], adapter); | |
d1a890fa | 1941 | |
09c5088e SB |
1942 | for (i = 0; i < adapter->num_rx_queues; i++) |
1943 | rcd_done += vmxnet3_rq_rx_complete(&adapter->rx_queue[i], | |
1944 | adapter, budget); | |
1945 | return rcd_done; | |
d1a890fa SB |
1946 | } |
1947 | ||
1948 | ||
1949 | static int | |
1950 | vmxnet3_poll(struct napi_struct *napi, int budget) | |
1951 | { | |
09c5088e SB |
1952 | struct vmxnet3_rx_queue *rx_queue = container_of(napi, |
1953 | struct vmxnet3_rx_queue, napi); | |
1954 | int rxd_done; | |
1955 | ||
1956 | rxd_done = vmxnet3_do_poll(rx_queue->adapter, budget); | |
1957 | ||
1958 | if (rxd_done < budget) { | |
6ad20165 | 1959 | napi_complete_done(napi, rxd_done); |
09c5088e SB |
1960 | vmxnet3_enable_all_intrs(rx_queue->adapter); |
1961 | } | |
1962 | return rxd_done; | |
1963 | } | |
1964 | ||
1965 | /* | |
1966 | * NAPI polling function for MSI-X mode with multiple Rx queues | |
1967 | * Returns the # of the NAPI credit consumed (# of rx descriptors processed) | |
1968 | */ | |
1969 | ||
1970 | static int | |
1971 | vmxnet3_poll_rx_only(struct napi_struct *napi, int budget) | |
1972 | { | |
1973 | struct vmxnet3_rx_queue *rq = container_of(napi, | |
1974 | struct vmxnet3_rx_queue, napi); | |
1975 | struct vmxnet3_adapter *adapter = rq->adapter; | |
d1a890fa SB |
1976 | int rxd_done; |
1977 | ||
09c5088e SB |
1978 | /* When sharing interrupt with corresponding tx queue, process |
1979 | * tx completions in that queue as well | |
1980 | */ | |
1981 | if (adapter->share_intr == VMXNET3_INTR_BUDDYSHARE) { | |
1982 | struct vmxnet3_tx_queue *tq = | |
1983 | &adapter->tx_queue[rq - adapter->rx_queue]; | |
1984 | vmxnet3_tq_tx_complete(tq, adapter); | |
1985 | } | |
1986 | ||
1987 | rxd_done = vmxnet3_rq_rx_complete(rq, adapter, budget); | |
d1a890fa SB |
1988 | |
1989 | if (rxd_done < budget) { | |
6ad20165 | 1990 | napi_complete_done(napi, rxd_done); |
09c5088e | 1991 | vmxnet3_enable_intr(adapter, rq->comp_ring.intr_idx); |
d1a890fa SB |
1992 | } |
1993 | return rxd_done; | |
1994 | } | |
1995 | ||
1996 | ||
09c5088e SB |
1997 | #ifdef CONFIG_PCI_MSI |
1998 | ||
1999 | /* | |
2000 | * Handle completion interrupts on tx queues | |
2001 | * Returns whether or not the intr is handled | |
2002 | */ | |
2003 | ||
2004 | static irqreturn_t | |
2005 | vmxnet3_msix_tx(int irq, void *data) | |
2006 | { | |
2007 | struct vmxnet3_tx_queue *tq = data; | |
2008 | struct vmxnet3_adapter *adapter = tq->adapter; | |
2009 | ||
2010 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
2011 | vmxnet3_disable_intr(adapter, tq->comp_ring.intr_idx); | |
2012 | ||
2013 | /* Handle the case where only one irq is allocate for all tx queues */ | |
2014 | if (adapter->share_intr == VMXNET3_INTR_TXSHARE) { | |
2015 | int i; | |
2016 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2017 | struct vmxnet3_tx_queue *txq = &adapter->tx_queue[i]; | |
2018 | vmxnet3_tq_tx_complete(txq, adapter); | |
2019 | } | |
2020 | } else { | |
2021 | vmxnet3_tq_tx_complete(tq, adapter); | |
2022 | } | |
2023 | vmxnet3_enable_intr(adapter, tq->comp_ring.intr_idx); | |
2024 | ||
2025 | return IRQ_HANDLED; | |
2026 | } | |
2027 | ||
2028 | ||
2029 | /* | |
2030 | * Handle completion interrupts on rx queues. Returns whether or not the | |
2031 | * intr is handled | |
2032 | */ | |
2033 | ||
2034 | static irqreturn_t | |
2035 | vmxnet3_msix_rx(int irq, void *data) | |
2036 | { | |
2037 | struct vmxnet3_rx_queue *rq = data; | |
2038 | struct vmxnet3_adapter *adapter = rq->adapter; | |
2039 | ||
2040 | /* disable intr if needed */ | |
2041 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
2042 | vmxnet3_disable_intr(adapter, rq->comp_ring.intr_idx); | |
2043 | napi_schedule(&rq->napi); | |
2044 | ||
2045 | return IRQ_HANDLED; | |
2046 | } | |
2047 | ||
2048 | /* | |
2049 | *---------------------------------------------------------------------------- | |
2050 | * | |
2051 | * vmxnet3_msix_event -- | |
2052 | * | |
2053 | * vmxnet3 msix event intr handler | |
2054 | * | |
2055 | * Result: | |
2056 | * whether or not the intr is handled | |
2057 | * | |
2058 | *---------------------------------------------------------------------------- | |
2059 | */ | |
2060 | ||
2061 | static irqreturn_t | |
2062 | vmxnet3_msix_event(int irq, void *data) | |
2063 | { | |
2064 | struct net_device *dev = data; | |
2065 | struct vmxnet3_adapter *adapter = netdev_priv(dev); | |
2066 | ||
2067 | /* disable intr if needed */ | |
2068 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
2069 | vmxnet3_disable_intr(adapter, adapter->intr.event_intr_idx); | |
2070 | ||
2071 | if (adapter->shared->ecr) | |
2072 | vmxnet3_process_events(adapter); | |
2073 | ||
2074 | vmxnet3_enable_intr(adapter, adapter->intr.event_intr_idx); | |
2075 | ||
2076 | return IRQ_HANDLED; | |
2077 | } | |
2078 | ||
2079 | #endif /* CONFIG_PCI_MSI */ | |
2080 | ||
2081 | ||
d1a890fa SB |
2082 | /* Interrupt handler for vmxnet3 */ |
2083 | static irqreturn_t | |
2084 | vmxnet3_intr(int irq, void *dev_id) | |
2085 | { | |
2086 | struct net_device *dev = dev_id; | |
2087 | struct vmxnet3_adapter *adapter = netdev_priv(dev); | |
2088 | ||
09c5088e | 2089 | if (adapter->intr.type == VMXNET3_IT_INTX) { |
d1a890fa SB |
2090 | u32 icr = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_ICR); |
2091 | if (unlikely(icr == 0)) | |
2092 | /* not ours */ | |
2093 | return IRQ_NONE; | |
2094 | } | |
2095 | ||
2096 | ||
2097 | /* disable intr if needed */ | |
2098 | if (adapter->intr.mask_mode == VMXNET3_IMM_ACTIVE) | |
09c5088e | 2099 | vmxnet3_disable_all_intrs(adapter); |
d1a890fa | 2100 | |
09c5088e | 2101 | napi_schedule(&adapter->rx_queue[0].napi); |
d1a890fa SB |
2102 | |
2103 | return IRQ_HANDLED; | |
2104 | } | |
2105 | ||
2106 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2107 | ||
d1a890fa SB |
2108 | /* netpoll callback. */ |
2109 | static void | |
2110 | vmxnet3_netpoll(struct net_device *netdev) | |
2111 | { | |
2112 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
d1a890fa | 2113 | |
d25f06ea | 2114 | switch (adapter->intr.type) { |
0a8d8c44 AB |
2115 | #ifdef CONFIG_PCI_MSI |
2116 | case VMXNET3_IT_MSIX: { | |
2117 | int i; | |
d25f06ea NH |
2118 | for (i = 0; i < adapter->num_rx_queues; i++) |
2119 | vmxnet3_msix_rx(0, &adapter->rx_queue[i]); | |
2120 | break; | |
0a8d8c44 AB |
2121 | } |
2122 | #endif | |
d25f06ea NH |
2123 | case VMXNET3_IT_MSI: |
2124 | default: | |
2125 | vmxnet3_intr(0, adapter->netdev); | |
2126 | break; | |
2127 | } | |
d1a890fa | 2128 | |
d1a890fa | 2129 | } |
09c5088e | 2130 | #endif /* CONFIG_NET_POLL_CONTROLLER */ |
d1a890fa SB |
2131 | |
2132 | static int | |
2133 | vmxnet3_request_irqs(struct vmxnet3_adapter *adapter) | |
2134 | { | |
09c5088e SB |
2135 | struct vmxnet3_intr *intr = &adapter->intr; |
2136 | int err = 0, i; | |
2137 | int vector = 0; | |
d1a890fa | 2138 | |
8f7e524c | 2139 | #ifdef CONFIG_PCI_MSI |
d1a890fa | 2140 | if (adapter->intr.type == VMXNET3_IT_MSIX) { |
09c5088e SB |
2141 | for (i = 0; i < adapter->num_tx_queues; i++) { |
2142 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) { | |
2143 | sprintf(adapter->tx_queue[i].name, "%s-tx-%d", | |
2144 | adapter->netdev->name, vector); | |
2145 | err = request_irq( | |
2146 | intr->msix_entries[vector].vector, | |
2147 | vmxnet3_msix_tx, 0, | |
2148 | adapter->tx_queue[i].name, | |
2149 | &adapter->tx_queue[i]); | |
2150 | } else { | |
2151 | sprintf(adapter->tx_queue[i].name, "%s-rxtx-%d", | |
2152 | adapter->netdev->name, vector); | |
2153 | } | |
2154 | if (err) { | |
2155 | dev_err(&adapter->netdev->dev, | |
2156 | "Failed to request irq for MSIX, %s, " | |
2157 | "error %d\n", | |
2158 | adapter->tx_queue[i].name, err); | |
2159 | return err; | |
2160 | } | |
2161 | ||
2162 | /* Handle the case where only 1 MSIx was allocated for | |
2163 | * all tx queues */ | |
2164 | if (adapter->share_intr == VMXNET3_INTR_TXSHARE) { | |
2165 | for (; i < adapter->num_tx_queues; i++) | |
2166 | adapter->tx_queue[i].comp_ring.intr_idx | |
2167 | = vector; | |
2168 | vector++; | |
2169 | break; | |
2170 | } else { | |
2171 | adapter->tx_queue[i].comp_ring.intr_idx | |
2172 | = vector++; | |
2173 | } | |
2174 | } | |
2175 | if (adapter->share_intr == VMXNET3_INTR_BUDDYSHARE) | |
2176 | vector = 0; | |
2177 | ||
2178 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2179 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) | |
2180 | sprintf(adapter->rx_queue[i].name, "%s-rx-%d", | |
2181 | adapter->netdev->name, vector); | |
2182 | else | |
2183 | sprintf(adapter->rx_queue[i].name, "%s-rxtx-%d", | |
2184 | adapter->netdev->name, vector); | |
2185 | err = request_irq(intr->msix_entries[vector].vector, | |
2186 | vmxnet3_msix_rx, 0, | |
2187 | adapter->rx_queue[i].name, | |
2188 | &(adapter->rx_queue[i])); | |
2189 | if (err) { | |
204a6e65 SH |
2190 | netdev_err(adapter->netdev, |
2191 | "Failed to request irq for MSIX, " | |
2192 | "%s, error %d\n", | |
2193 | adapter->rx_queue[i].name, err); | |
09c5088e SB |
2194 | return err; |
2195 | } | |
2196 | ||
2197 | adapter->rx_queue[i].comp_ring.intr_idx = vector++; | |
2198 | } | |
2199 | ||
2200 | sprintf(intr->event_msi_vector_name, "%s-event-%d", | |
2201 | adapter->netdev->name, vector); | |
2202 | err = request_irq(intr->msix_entries[vector].vector, | |
2203 | vmxnet3_msix_event, 0, | |
2204 | intr->event_msi_vector_name, adapter->netdev); | |
2205 | intr->event_intr_idx = vector; | |
2206 | ||
2207 | } else if (intr->type == VMXNET3_IT_MSI) { | |
2208 | adapter->num_rx_queues = 1; | |
d1a890fa SB |
2209 | err = request_irq(adapter->pdev->irq, vmxnet3_intr, 0, |
2210 | adapter->netdev->name, adapter->netdev); | |
09c5088e | 2211 | } else { |
115924b6 | 2212 | #endif |
09c5088e | 2213 | adapter->num_rx_queues = 1; |
d1a890fa SB |
2214 | err = request_irq(adapter->pdev->irq, vmxnet3_intr, |
2215 | IRQF_SHARED, adapter->netdev->name, | |
2216 | adapter->netdev); | |
09c5088e | 2217 | #ifdef CONFIG_PCI_MSI |
d1a890fa | 2218 | } |
09c5088e SB |
2219 | #endif |
2220 | intr->num_intrs = vector + 1; | |
2221 | if (err) { | |
204a6e65 SH |
2222 | netdev_err(adapter->netdev, |
2223 | "Failed to request irq (intr type:%d), error %d\n", | |
2224 | intr->type, err); | |
09c5088e SB |
2225 | } else { |
2226 | /* Number of rx queues will not change after this */ | |
2227 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2228 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; | |
2229 | rq->qid = i; | |
2230 | rq->qid2 = i + adapter->num_rx_queues; | |
50a5ce3e | 2231 | rq->dataRingQid = i + 2 * adapter->num_rx_queues; |
09c5088e | 2232 | } |
d1a890fa | 2233 | |
09c5088e SB |
2234 | /* init our intr settings */ |
2235 | for (i = 0; i < intr->num_intrs; i++) | |
2236 | intr->mod_levels[i] = UPT1_IML_ADAPTIVE; | |
2237 | if (adapter->intr.type != VMXNET3_IT_MSIX) { | |
2238 | adapter->intr.event_intr_idx = 0; | |
2239 | for (i = 0; i < adapter->num_tx_queues; i++) | |
2240 | adapter->tx_queue[i].comp_ring.intr_idx = 0; | |
2241 | adapter->rx_queue[0].comp_ring.intr_idx = 0; | |
2242 | } | |
d1a890fa | 2243 | |
204a6e65 SH |
2244 | netdev_info(adapter->netdev, |
2245 | "intr type %u, mode %u, %u vectors allocated\n", | |
2246 | intr->type, intr->mask_mode, intr->num_intrs); | |
d1a890fa SB |
2247 | } |
2248 | ||
2249 | return err; | |
2250 | } | |
2251 | ||
2252 | ||
2253 | static void | |
2254 | vmxnet3_free_irqs(struct vmxnet3_adapter *adapter) | |
2255 | { | |
09c5088e SB |
2256 | struct vmxnet3_intr *intr = &adapter->intr; |
2257 | BUG_ON(intr->type == VMXNET3_IT_AUTO || intr->num_intrs <= 0); | |
d1a890fa | 2258 | |
09c5088e | 2259 | switch (intr->type) { |
8f7e524c | 2260 | #ifdef CONFIG_PCI_MSI |
d1a890fa SB |
2261 | case VMXNET3_IT_MSIX: |
2262 | { | |
09c5088e | 2263 | int i, vector = 0; |
d1a890fa | 2264 | |
09c5088e SB |
2265 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) { |
2266 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2267 | free_irq(intr->msix_entries[vector++].vector, | |
2268 | &(adapter->tx_queue[i])); | |
2269 | if (adapter->share_intr == VMXNET3_INTR_TXSHARE) | |
2270 | break; | |
2271 | } | |
2272 | } | |
2273 | ||
2274 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2275 | free_irq(intr->msix_entries[vector++].vector, | |
2276 | &(adapter->rx_queue[i])); | |
2277 | } | |
2278 | ||
2279 | free_irq(intr->msix_entries[vector].vector, | |
2280 | adapter->netdev); | |
2281 | BUG_ON(vector >= intr->num_intrs); | |
d1a890fa SB |
2282 | break; |
2283 | } | |
8f7e524c | 2284 | #endif |
d1a890fa SB |
2285 | case VMXNET3_IT_MSI: |
2286 | free_irq(adapter->pdev->irq, adapter->netdev); | |
2287 | break; | |
2288 | case VMXNET3_IT_INTX: | |
2289 | free_irq(adapter->pdev->irq, adapter->netdev); | |
2290 | break; | |
2291 | default: | |
c068e777 | 2292 | BUG(); |
d1a890fa SB |
2293 | } |
2294 | } | |
2295 | ||
d1a890fa SB |
2296 | |
2297 | static void | |
2298 | vmxnet3_restore_vlan(struct vmxnet3_adapter *adapter) | |
2299 | { | |
72e85c45 JG |
2300 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; |
2301 | u16 vid; | |
d1a890fa | 2302 | |
72e85c45 JG |
2303 | /* allow untagged pkts */ |
2304 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, 0); | |
2305 | ||
2306 | for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) | |
2307 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid); | |
d1a890fa SB |
2308 | } |
2309 | ||
2310 | ||
8e586137 | 2311 | static int |
80d5c368 | 2312 | vmxnet3_vlan_rx_add_vid(struct net_device *netdev, __be16 proto, u16 vid) |
d1a890fa SB |
2313 | { |
2314 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
d1a890fa | 2315 | |
f6957f88 JG |
2316 | if (!(netdev->flags & IFF_PROMISC)) { |
2317 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
2318 | unsigned long flags; | |
2319 | ||
2320 | VMXNET3_SET_VFTABLE_ENTRY(vfTable, vid); | |
2321 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
2322 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2323 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
2324 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
2325 | } | |
72e85c45 JG |
2326 | |
2327 | set_bit(vid, adapter->active_vlans); | |
8e586137 JP |
2328 | |
2329 | return 0; | |
d1a890fa SB |
2330 | } |
2331 | ||
2332 | ||
8e586137 | 2333 | static int |
80d5c368 | 2334 | vmxnet3_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid) |
d1a890fa SB |
2335 | { |
2336 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
d1a890fa | 2337 | |
f6957f88 JG |
2338 | if (!(netdev->flags & IFF_PROMISC)) { |
2339 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
2340 | unsigned long flags; | |
2341 | ||
2342 | VMXNET3_CLEAR_VFTABLE_ENTRY(vfTable, vid); | |
2343 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
2344 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2345 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
2346 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
2347 | } | |
72e85c45 JG |
2348 | |
2349 | clear_bit(vid, adapter->active_vlans); | |
8e586137 JP |
2350 | |
2351 | return 0; | |
d1a890fa SB |
2352 | } |
2353 | ||
2354 | ||
2355 | static u8 * | |
2356 | vmxnet3_copy_mc(struct net_device *netdev) | |
2357 | { | |
2358 | u8 *buf = NULL; | |
4cd24eaf | 2359 | u32 sz = netdev_mc_count(netdev) * ETH_ALEN; |
d1a890fa SB |
2360 | |
2361 | /* struct Vmxnet3_RxFilterConf.mfTableLen is u16. */ | |
2362 | if (sz <= 0xffff) { | |
2363 | /* We may be called with BH disabled */ | |
2364 | buf = kmalloc(sz, GFP_ATOMIC); | |
2365 | if (buf) { | |
22bedad3 | 2366 | struct netdev_hw_addr *ha; |
567ec874 | 2367 | int i = 0; |
d1a890fa | 2368 | |
22bedad3 JP |
2369 | netdev_for_each_mc_addr(ha, netdev) |
2370 | memcpy(buf + i++ * ETH_ALEN, ha->addr, | |
d1a890fa | 2371 | ETH_ALEN); |
d1a890fa SB |
2372 | } |
2373 | } | |
2374 | return buf; | |
2375 | } | |
2376 | ||
2377 | ||
2378 | static void | |
2379 | vmxnet3_set_mc(struct net_device *netdev) | |
2380 | { | |
2381 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
83d0feff | 2382 | unsigned long flags; |
d1a890fa SB |
2383 | struct Vmxnet3_RxFilterConf *rxConf = |
2384 | &adapter->shared->devRead.rxFilterConf; | |
2385 | u8 *new_table = NULL; | |
b0eb57cb | 2386 | dma_addr_t new_table_pa = 0; |
fb5c6cfa | 2387 | bool new_table_pa_valid = false; |
d1a890fa SB |
2388 | u32 new_mode = VMXNET3_RXM_UCAST; |
2389 | ||
72e85c45 JG |
2390 | if (netdev->flags & IFF_PROMISC) { |
2391 | u32 *vfTable = adapter->shared->devRead.rxFilterConf.vfTable; | |
2392 | memset(vfTable, 0, VMXNET3_VFT_SIZE * sizeof(*vfTable)); | |
2393 | ||
d1a890fa | 2394 | new_mode |= VMXNET3_RXM_PROMISC; |
72e85c45 JG |
2395 | } else { |
2396 | vmxnet3_restore_vlan(adapter); | |
2397 | } | |
d1a890fa SB |
2398 | |
2399 | if (netdev->flags & IFF_BROADCAST) | |
2400 | new_mode |= VMXNET3_RXM_BCAST; | |
2401 | ||
2402 | if (netdev->flags & IFF_ALLMULTI) | |
2403 | new_mode |= VMXNET3_RXM_ALL_MULTI; | |
2404 | else | |
4cd24eaf | 2405 | if (!netdev_mc_empty(netdev)) { |
d1a890fa SB |
2406 | new_table = vmxnet3_copy_mc(netdev); |
2407 | if (new_table) { | |
d37d5ec8 SK |
2408 | size_t sz = netdev_mc_count(netdev) * ETH_ALEN; |
2409 | ||
2410 | rxConf->mfTableLen = cpu_to_le16(sz); | |
b0eb57cb AK |
2411 | new_table_pa = dma_map_single( |
2412 | &adapter->pdev->dev, | |
2413 | new_table, | |
d37d5ec8 | 2414 | sz, |
b0eb57cb | 2415 | PCI_DMA_TODEVICE); |
fb5c6cfa AK |
2416 | if (!dma_mapping_error(&adapter->pdev->dev, |
2417 | new_table_pa)) { | |
2418 | new_mode |= VMXNET3_RXM_MCAST; | |
2419 | new_table_pa_valid = true; | |
2420 | rxConf->mfTablePA = cpu_to_le64( | |
2421 | new_table_pa); | |
2422 | } | |
4ad9a64f | 2423 | } |
fb5c6cfa | 2424 | if (!new_table_pa_valid) { |
4ad9a64f AK |
2425 | netdev_info(netdev, |
2426 | "failed to copy mcast list, setting ALL_MULTI\n"); | |
d1a890fa SB |
2427 | new_mode |= VMXNET3_RXM_ALL_MULTI; |
2428 | } | |
2429 | } | |
2430 | ||
d1a890fa SB |
2431 | if (!(new_mode & VMXNET3_RXM_MCAST)) { |
2432 | rxConf->mfTableLen = 0; | |
2433 | rxConf->mfTablePA = 0; | |
2434 | } | |
2435 | ||
83d0feff | 2436 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa | 2437 | if (new_mode != rxConf->rxMode) { |
115924b6 | 2438 | rxConf->rxMode = cpu_to_le32(new_mode); |
d1a890fa SB |
2439 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
2440 | VMXNET3_CMD_UPDATE_RX_MODE); | |
72e85c45 JG |
2441 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
2442 | VMXNET3_CMD_UPDATE_VLAN_FILTERS); | |
d1a890fa SB |
2443 | } |
2444 | ||
2445 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2446 | VMXNET3_CMD_UPDATE_MAC_FILTERS); | |
83d0feff | 2447 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa | 2448 | |
fb5c6cfa | 2449 | if (new_table_pa_valid) |
b0eb57cb AK |
2450 | dma_unmap_single(&adapter->pdev->dev, new_table_pa, |
2451 | rxConf->mfTableLen, PCI_DMA_TODEVICE); | |
4ad9a64f | 2452 | kfree(new_table); |
d1a890fa SB |
2453 | } |
2454 | ||
09c5088e SB |
2455 | void |
2456 | vmxnet3_rq_destroy_all(struct vmxnet3_adapter *adapter) | |
2457 | { | |
2458 | int i; | |
2459 | ||
2460 | for (i = 0; i < adapter->num_rx_queues; i++) | |
2461 | vmxnet3_rq_destroy(&adapter->rx_queue[i], adapter); | |
2462 | } | |
2463 | ||
d1a890fa SB |
2464 | |
2465 | /* | |
2466 | * Set up driver_shared based on settings in adapter. | |
2467 | */ | |
2468 | ||
2469 | static void | |
2470 | vmxnet3_setup_driver_shared(struct vmxnet3_adapter *adapter) | |
2471 | { | |
2472 | struct Vmxnet3_DriverShared *shared = adapter->shared; | |
2473 | struct Vmxnet3_DSDevRead *devRead = &shared->devRead; | |
2474 | struct Vmxnet3_TxQueueConf *tqc; | |
2475 | struct Vmxnet3_RxQueueConf *rqc; | |
2476 | int i; | |
2477 | ||
2478 | memset(shared, 0, sizeof(*shared)); | |
2479 | ||
2480 | /* driver settings */ | |
115924b6 SB |
2481 | shared->magic = cpu_to_le32(VMXNET3_REV1_MAGIC); |
2482 | devRead->misc.driverInfo.version = cpu_to_le32( | |
2483 | VMXNET3_DRIVER_VERSION_NUM); | |
d1a890fa SB |
2484 | devRead->misc.driverInfo.gos.gosBits = (sizeof(void *) == 4 ? |
2485 | VMXNET3_GOS_BITS_32 : VMXNET3_GOS_BITS_64); | |
2486 | devRead->misc.driverInfo.gos.gosType = VMXNET3_GOS_TYPE_LINUX; | |
115924b6 SB |
2487 | *((u32 *)&devRead->misc.driverInfo.gos) = cpu_to_le32( |
2488 | *((u32 *)&devRead->misc.driverInfo.gos)); | |
2489 | devRead->misc.driverInfo.vmxnet3RevSpt = cpu_to_le32(1); | |
2490 | devRead->misc.driverInfo.uptVerSpt = cpu_to_le32(1); | |
d1a890fa | 2491 | |
b0eb57cb | 2492 | devRead->misc.ddPA = cpu_to_le64(adapter->adapter_pa); |
115924b6 | 2493 | devRead->misc.ddLen = cpu_to_le32(sizeof(struct vmxnet3_adapter)); |
d1a890fa SB |
2494 | |
2495 | /* set up feature flags */ | |
a0d2730c | 2496 | if (adapter->netdev->features & NETIF_F_RXCSUM) |
3843e515 | 2497 | devRead->misc.uptFeatures |= UPT1_F_RXCSUM; |
d1a890fa | 2498 | |
a0d2730c | 2499 | if (adapter->netdev->features & NETIF_F_LRO) { |
3843e515 | 2500 | devRead->misc.uptFeatures |= UPT1_F_LRO; |
115924b6 | 2501 | devRead->misc.maxNumRxSG = cpu_to_le16(1 + MAX_SKB_FRAGS); |
d1a890fa | 2502 | } |
f646968f | 2503 | if (adapter->netdev->features & NETIF_F_HW_VLAN_CTAG_RX) |
3843e515 | 2504 | devRead->misc.uptFeatures |= UPT1_F_RXVLAN; |
d1a890fa | 2505 | |
dacce2be RD |
2506 | if (adapter->netdev->features & (NETIF_F_GSO_UDP_TUNNEL | |
2507 | NETIF_F_GSO_UDP_TUNNEL_CSUM)) | |
2508 | devRead->misc.uptFeatures |= UPT1_F_RXINNEROFLD; | |
2509 | ||
115924b6 SB |
2510 | devRead->misc.mtu = cpu_to_le32(adapter->netdev->mtu); |
2511 | devRead->misc.queueDescPA = cpu_to_le64(adapter->queue_desc_pa); | |
2512 | devRead->misc.queueDescLen = cpu_to_le32( | |
09c5088e SB |
2513 | adapter->num_tx_queues * sizeof(struct Vmxnet3_TxQueueDesc) + |
2514 | adapter->num_rx_queues * sizeof(struct Vmxnet3_RxQueueDesc)); | |
d1a890fa SB |
2515 | |
2516 | /* tx queue settings */ | |
09c5088e SB |
2517 | devRead->misc.numTxQueues = adapter->num_tx_queues; |
2518 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2519 | struct vmxnet3_tx_queue *tq = &adapter->tx_queue[i]; | |
2520 | BUG_ON(adapter->tx_queue[i].tx_ring.base == NULL); | |
2521 | tqc = &adapter->tqd_start[i].conf; | |
2522 | tqc->txRingBasePA = cpu_to_le64(tq->tx_ring.basePA); | |
2523 | tqc->dataRingBasePA = cpu_to_le64(tq->data_ring.basePA); | |
2524 | tqc->compRingBasePA = cpu_to_le64(tq->comp_ring.basePA); | |
b0eb57cb | 2525 | tqc->ddPA = cpu_to_le64(tq->buf_info_pa); |
09c5088e SB |
2526 | tqc->txRingSize = cpu_to_le32(tq->tx_ring.size); |
2527 | tqc->dataRingSize = cpu_to_le32(tq->data_ring.size); | |
3c8b3efc | 2528 | tqc->txDataRingDescSize = cpu_to_le32(tq->txdata_desc_size); |
09c5088e SB |
2529 | tqc->compRingSize = cpu_to_le32(tq->comp_ring.size); |
2530 | tqc->ddLen = cpu_to_le32( | |
2531 | sizeof(struct vmxnet3_tx_buf_info) * | |
2532 | tqc->txRingSize); | |
2533 | tqc->intrIdx = tq->comp_ring.intr_idx; | |
2534 | } | |
d1a890fa SB |
2535 | |
2536 | /* rx queue settings */ | |
09c5088e SB |
2537 | devRead->misc.numRxQueues = adapter->num_rx_queues; |
2538 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
2539 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; | |
2540 | rqc = &adapter->rqd_start[i].conf; | |
2541 | rqc->rxRingBasePA[0] = cpu_to_le64(rq->rx_ring[0].basePA); | |
2542 | rqc->rxRingBasePA[1] = cpu_to_le64(rq->rx_ring[1].basePA); | |
2543 | rqc->compRingBasePA = cpu_to_le64(rq->comp_ring.basePA); | |
b0eb57cb | 2544 | rqc->ddPA = cpu_to_le64(rq->buf_info_pa); |
09c5088e SB |
2545 | rqc->rxRingSize[0] = cpu_to_le32(rq->rx_ring[0].size); |
2546 | rqc->rxRingSize[1] = cpu_to_le32(rq->rx_ring[1].size); | |
2547 | rqc->compRingSize = cpu_to_le32(rq->comp_ring.size); | |
2548 | rqc->ddLen = cpu_to_le32( | |
2549 | sizeof(struct vmxnet3_rx_buf_info) * | |
2550 | (rqc->rxRingSize[0] + | |
2551 | rqc->rxRingSize[1])); | |
2552 | rqc->intrIdx = rq->comp_ring.intr_idx; | |
50a5ce3e SK |
2553 | if (VMXNET3_VERSION_GE_3(adapter)) { |
2554 | rqc->rxDataRingBasePA = | |
2555 | cpu_to_le64(rq->data_ring.basePA); | |
2556 | rqc->rxDataRingDescSize = | |
2557 | cpu_to_le16(rq->data_ring.desc_size); | |
2558 | } | |
09c5088e SB |
2559 | } |
2560 | ||
2561 | #ifdef VMXNET3_RSS | |
2562 | memset(adapter->rss_conf, 0, sizeof(*adapter->rss_conf)); | |
2563 | ||
2564 | if (adapter->rss) { | |
2565 | struct UPT1_RSSConf *rssConf = adapter->rss_conf; | |
66d35910 | 2566 | |
09c5088e SB |
2567 | devRead->misc.uptFeatures |= UPT1_F_RSS; |
2568 | devRead->misc.numRxQueues = adapter->num_rx_queues; | |
2569 | rssConf->hashType = UPT1_RSS_HASH_TYPE_TCP_IPV4 | | |
2570 | UPT1_RSS_HASH_TYPE_IPV4 | | |
2571 | UPT1_RSS_HASH_TYPE_TCP_IPV6 | | |
2572 | UPT1_RSS_HASH_TYPE_IPV6; | |
2573 | rssConf->hashFunc = UPT1_RSS_HASH_FUNC_TOEPLITZ; | |
2574 | rssConf->hashKeySize = UPT1_RSS_MAX_KEY_SIZE; | |
2575 | rssConf->indTableSize = VMXNET3_RSS_IND_TABLE_SIZE; | |
6bf79cdd | 2576 | netdev_rss_key_fill(rssConf->hashKey, sizeof(rssConf->hashKey)); |
66d35910 | 2577 | |
09c5088e | 2578 | for (i = 0; i < rssConf->indTableSize; i++) |
278bc429 BH |
2579 | rssConf->indTable[i] = ethtool_rxfh_indir_default( |
2580 | i, adapter->num_rx_queues); | |
09c5088e SB |
2581 | |
2582 | devRead->rssConfDesc.confVer = 1; | |
b0eb57cb AK |
2583 | devRead->rssConfDesc.confLen = cpu_to_le32(sizeof(*rssConf)); |
2584 | devRead->rssConfDesc.confPA = | |
2585 | cpu_to_le64(adapter->rss_conf_pa); | |
09c5088e SB |
2586 | } |
2587 | ||
2588 | #endif /* VMXNET3_RSS */ | |
d1a890fa SB |
2589 | |
2590 | /* intr settings */ | |
2591 | devRead->intrConf.autoMask = adapter->intr.mask_mode == | |
2592 | VMXNET3_IMM_AUTO; | |
2593 | devRead->intrConf.numIntrs = adapter->intr.num_intrs; | |
2594 | for (i = 0; i < adapter->intr.num_intrs; i++) | |
2595 | devRead->intrConf.modLevels[i] = adapter->intr.mod_levels[i]; | |
2596 | ||
2597 | devRead->intrConf.eventIntrIdx = adapter->intr.event_intr_idx; | |
6929fe8a | 2598 | devRead->intrConf.intrCtrl |= cpu_to_le32(VMXNET3_IC_DISABLE_ALL); |
d1a890fa SB |
2599 | |
2600 | /* rx filter settings */ | |
2601 | devRead->rxFilterConf.rxMode = 0; | |
2602 | vmxnet3_restore_vlan(adapter); | |
f9f25026 SB |
2603 | vmxnet3_write_mac_addr(adapter, adapter->netdev->dev_addr); |
2604 | ||
d1a890fa SB |
2605 | /* the rest are already zeroed */ |
2606 | } | |
2607 | ||
4edef40e SK |
2608 | static void |
2609 | vmxnet3_init_coalesce(struct vmxnet3_adapter *adapter) | |
2610 | { | |
2611 | struct Vmxnet3_DriverShared *shared = adapter->shared; | |
2612 | union Vmxnet3_CmdInfo *cmdInfo = &shared->cu.cmdInfo; | |
2613 | unsigned long flags; | |
2614 | ||
2615 | if (!VMXNET3_VERSION_GE_3(adapter)) | |
2616 | return; | |
2617 | ||
2618 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
2619 | cmdInfo->varConf.confVer = 1; | |
2620 | cmdInfo->varConf.confLen = | |
2621 | cpu_to_le32(sizeof(*adapter->coal_conf)); | |
2622 | cmdInfo->varConf.confPA = cpu_to_le64(adapter->coal_conf_pa); | |
2623 | ||
2624 | if (adapter->default_coal_mode) { | |
2625 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2626 | VMXNET3_CMD_GET_COALESCE); | |
2627 | } else { | |
2628 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2629 | VMXNET3_CMD_SET_COALESCE); | |
2630 | } | |
2631 | ||
2632 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
2633 | } | |
d1a890fa | 2634 | |
d3a8a9e5 RD |
2635 | static void |
2636 | vmxnet3_init_rssfields(struct vmxnet3_adapter *adapter) | |
2637 | { | |
2638 | struct Vmxnet3_DriverShared *shared = adapter->shared; | |
2639 | union Vmxnet3_CmdInfo *cmdInfo = &shared->cu.cmdInfo; | |
2640 | unsigned long flags; | |
2641 | ||
dacce2be RD |
2642 | if (!VMXNET3_VERSION_GE_4(adapter)) |
2643 | return; | |
d3a8a9e5 RD |
2644 | |
2645 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
2646 | ||
2647 | if (adapter->default_rss_fields) { | |
2648 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2649 | VMXNET3_CMD_GET_RSS_FIELDS); | |
2650 | adapter->rss_fields = | |
2651 | VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
2652 | } else { | |
2653 | cmdInfo->setRssFields = adapter->rss_fields; | |
2654 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2655 | VMXNET3_CMD_SET_RSS_FIELDS); | |
2656 | /* Not all requested RSS may get applied, so get and | |
2657 | * cache what was actually applied. | |
2658 | */ | |
2659 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
2660 | VMXNET3_CMD_GET_RSS_FIELDS); | |
2661 | adapter->rss_fields = | |
2662 | VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
2663 | } | |
2664 | ||
2665 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
2666 | } | |
2667 | ||
d1a890fa SB |
2668 | int |
2669 | vmxnet3_activate_dev(struct vmxnet3_adapter *adapter) | |
2670 | { | |
09c5088e | 2671 | int err, i; |
d1a890fa | 2672 | u32 ret; |
83d0feff | 2673 | unsigned long flags; |
d1a890fa | 2674 | |
fdcd79b9 | 2675 | netdev_dbg(adapter->netdev, "%s: skb_buf_size %d, rx_buf_per_pkt %d," |
09c5088e SB |
2676 | " ring sizes %u %u %u\n", adapter->netdev->name, |
2677 | adapter->skb_buf_size, adapter->rx_buf_per_pkt, | |
2678 | adapter->tx_queue[0].tx_ring.size, | |
2679 | adapter->rx_queue[0].rx_ring[0].size, | |
2680 | adapter->rx_queue[0].rx_ring[1].size); | |
2681 | ||
2682 | vmxnet3_tq_init_all(adapter); | |
2683 | err = vmxnet3_rq_init_all(adapter); | |
d1a890fa | 2684 | if (err) { |
204a6e65 SH |
2685 | netdev_err(adapter->netdev, |
2686 | "Failed to init rx queue error %d\n", err); | |
d1a890fa SB |
2687 | goto rq_err; |
2688 | } | |
2689 | ||
2690 | err = vmxnet3_request_irqs(adapter); | |
2691 | if (err) { | |
204a6e65 SH |
2692 | netdev_err(adapter->netdev, |
2693 | "Failed to setup irq for error %d\n", err); | |
d1a890fa SB |
2694 | goto irq_err; |
2695 | } | |
2696 | ||
2697 | vmxnet3_setup_driver_shared(adapter); | |
2698 | ||
115924b6 SB |
2699 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL, VMXNET3_GET_ADDR_LO( |
2700 | adapter->shared_pa)); | |
2701 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH, VMXNET3_GET_ADDR_HI( | |
2702 | adapter->shared_pa)); | |
83d0feff | 2703 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
2704 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
2705 | VMXNET3_CMD_ACTIVATE_DEV); | |
2706 | ret = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
83d0feff | 2707 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
2708 | |
2709 | if (ret != 0) { | |
204a6e65 SH |
2710 | netdev_err(adapter->netdev, |
2711 | "Failed to activate dev: error %u\n", ret); | |
d1a890fa SB |
2712 | err = -EINVAL; |
2713 | goto activate_err; | |
2714 | } | |
09c5088e | 2715 | |
4edef40e | 2716 | vmxnet3_init_coalesce(adapter); |
d3a8a9e5 | 2717 | vmxnet3_init_rssfields(adapter); |
4edef40e | 2718 | |
09c5088e SB |
2719 | for (i = 0; i < adapter->num_rx_queues; i++) { |
2720 | VMXNET3_WRITE_BAR0_REG(adapter, | |
2721 | VMXNET3_REG_RXPROD + i * VMXNET3_REG_ALIGN, | |
2722 | adapter->rx_queue[i].rx_ring[0].next2fill); | |
2723 | VMXNET3_WRITE_BAR0_REG(adapter, (VMXNET3_REG_RXPROD2 + | |
2724 | (i * VMXNET3_REG_ALIGN)), | |
2725 | adapter->rx_queue[i].rx_ring[1].next2fill); | |
2726 | } | |
d1a890fa SB |
2727 | |
2728 | /* Apply the rx filter settins last. */ | |
2729 | vmxnet3_set_mc(adapter->netdev); | |
2730 | ||
2731 | /* | |
2732 | * Check link state when first activating device. It will start the | |
2733 | * tx queue if the link is up. | |
2734 | */ | |
4a1745fc | 2735 | vmxnet3_check_link(adapter, true); |
09c5088e SB |
2736 | for (i = 0; i < adapter->num_rx_queues; i++) |
2737 | napi_enable(&adapter->rx_queue[i].napi); | |
d1a890fa SB |
2738 | vmxnet3_enable_all_intrs(adapter); |
2739 | clear_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state); | |
2740 | return 0; | |
2741 | ||
2742 | activate_err: | |
2743 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAL, 0); | |
2744 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_DSAH, 0); | |
2745 | vmxnet3_free_irqs(adapter); | |
2746 | irq_err: | |
2747 | rq_err: | |
2748 | /* free up buffers we allocated */ | |
09c5088e | 2749 | vmxnet3_rq_cleanup_all(adapter); |
d1a890fa SB |
2750 | return err; |
2751 | } | |
2752 | ||
2753 | ||
2754 | void | |
2755 | vmxnet3_reset_dev(struct vmxnet3_adapter *adapter) | |
2756 | { | |
83d0feff SB |
2757 | unsigned long flags; |
2758 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
d1a890fa | 2759 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV); |
83d0feff | 2760 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
2761 | } |
2762 | ||
2763 | ||
2764 | int | |
2765 | vmxnet3_quiesce_dev(struct vmxnet3_adapter *adapter) | |
2766 | { | |
09c5088e | 2767 | int i; |
83d0feff | 2768 | unsigned long flags; |
d1a890fa SB |
2769 | if (test_and_set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state)) |
2770 | return 0; | |
2771 | ||
2772 | ||
83d0feff | 2773 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
2774 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
2775 | VMXNET3_CMD_QUIESCE_DEV); | |
83d0feff | 2776 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
2777 | vmxnet3_disable_all_intrs(adapter); |
2778 | ||
09c5088e SB |
2779 | for (i = 0; i < adapter->num_rx_queues; i++) |
2780 | napi_disable(&adapter->rx_queue[i].napi); | |
d1a890fa SB |
2781 | netif_tx_disable(adapter->netdev); |
2782 | adapter->link_speed = 0; | |
2783 | netif_carrier_off(adapter->netdev); | |
2784 | ||
09c5088e SB |
2785 | vmxnet3_tq_cleanup_all(adapter); |
2786 | vmxnet3_rq_cleanup_all(adapter); | |
d1a890fa SB |
2787 | vmxnet3_free_irqs(adapter); |
2788 | return 0; | |
2789 | } | |
2790 | ||
2791 | ||
2792 | static void | |
2793 | vmxnet3_write_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac) | |
2794 | { | |
2795 | u32 tmp; | |
2796 | ||
2797 | tmp = *(u32 *)mac; | |
2798 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACL, tmp); | |
2799 | ||
2800 | tmp = (mac[5] << 8) | mac[4]; | |
2801 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_MACH, tmp); | |
2802 | } | |
2803 | ||
2804 | ||
2805 | static int | |
2806 | vmxnet3_set_mac_addr(struct net_device *netdev, void *p) | |
2807 | { | |
2808 | struct sockaddr *addr = p; | |
2809 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
2810 | ||
2811 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
2812 | vmxnet3_write_mac_addr(adapter, addr->sa_data); | |
2813 | ||
2814 | return 0; | |
2815 | } | |
2816 | ||
2817 | ||
2818 | /* ==================== initialization and cleanup routines ============ */ | |
2819 | ||
2820 | static int | |
61aeecea | 2821 | vmxnet3_alloc_pci_resources(struct vmxnet3_adapter *adapter) |
d1a890fa SB |
2822 | { |
2823 | int err; | |
2824 | unsigned long mmio_start, mmio_len; | |
2825 | struct pci_dev *pdev = adapter->pdev; | |
2826 | ||
2827 | err = pci_enable_device(pdev); | |
2828 | if (err) { | |
204a6e65 | 2829 | dev_err(&pdev->dev, "Failed to enable adapter: error %d\n", err); |
d1a890fa SB |
2830 | return err; |
2831 | } | |
2832 | ||
d1a890fa SB |
2833 | err = pci_request_selected_regions(pdev, (1 << 2) - 1, |
2834 | vmxnet3_driver_name); | |
2835 | if (err) { | |
204a6e65 SH |
2836 | dev_err(&pdev->dev, |
2837 | "Failed to request region for adapter: error %d\n", err); | |
61aeecea | 2838 | goto err_enable_device; |
d1a890fa SB |
2839 | } |
2840 | ||
2841 | pci_set_master(pdev); | |
2842 | ||
2843 | mmio_start = pci_resource_start(pdev, 0); | |
2844 | mmio_len = pci_resource_len(pdev, 0); | |
2845 | adapter->hw_addr0 = ioremap(mmio_start, mmio_len); | |
2846 | if (!adapter->hw_addr0) { | |
204a6e65 | 2847 | dev_err(&pdev->dev, "Failed to map bar0\n"); |
d1a890fa SB |
2848 | err = -EIO; |
2849 | goto err_ioremap; | |
2850 | } | |
2851 | ||
2852 | mmio_start = pci_resource_start(pdev, 1); | |
2853 | mmio_len = pci_resource_len(pdev, 1); | |
2854 | adapter->hw_addr1 = ioremap(mmio_start, mmio_len); | |
2855 | if (!adapter->hw_addr1) { | |
204a6e65 | 2856 | dev_err(&pdev->dev, "Failed to map bar1\n"); |
d1a890fa SB |
2857 | err = -EIO; |
2858 | goto err_bar1; | |
2859 | } | |
2860 | return 0; | |
2861 | ||
2862 | err_bar1: | |
2863 | iounmap(adapter->hw_addr0); | |
2864 | err_ioremap: | |
2865 | pci_release_selected_regions(pdev, (1 << 2) - 1); | |
61aeecea | 2866 | err_enable_device: |
d1a890fa SB |
2867 | pci_disable_device(pdev); |
2868 | return err; | |
2869 | } | |
2870 | ||
2871 | ||
2872 | static void | |
2873 | vmxnet3_free_pci_resources(struct vmxnet3_adapter *adapter) | |
2874 | { | |
2875 | BUG_ON(!adapter->pdev); | |
2876 | ||
2877 | iounmap(adapter->hw_addr0); | |
2878 | iounmap(adapter->hw_addr1); | |
2879 | pci_release_selected_regions(adapter->pdev, (1 << 2) - 1); | |
2880 | pci_disable_device(adapter->pdev); | |
2881 | } | |
2882 | ||
2883 | ||
2884 | static void | |
2885 | vmxnet3_adjust_rx_ring_size(struct vmxnet3_adapter *adapter) | |
2886 | { | |
09c5088e | 2887 | size_t sz, i, ring0_size, ring1_size, comp_size; |
d1a890fa SB |
2888 | if (adapter->netdev->mtu <= VMXNET3_MAX_SKB_BUF_SIZE - |
2889 | VMXNET3_MAX_ETH_HDR_SIZE) { | |
2890 | adapter->skb_buf_size = adapter->netdev->mtu + | |
2891 | VMXNET3_MAX_ETH_HDR_SIZE; | |
2892 | if (adapter->skb_buf_size < VMXNET3_MIN_T0_BUF_SIZE) | |
2893 | adapter->skb_buf_size = VMXNET3_MIN_T0_BUF_SIZE; | |
2894 | ||
2895 | adapter->rx_buf_per_pkt = 1; | |
2896 | } else { | |
2897 | adapter->skb_buf_size = VMXNET3_MAX_SKB_BUF_SIZE; | |
2898 | sz = adapter->netdev->mtu - VMXNET3_MAX_SKB_BUF_SIZE + | |
2899 | VMXNET3_MAX_ETH_HDR_SIZE; | |
2900 | adapter->rx_buf_per_pkt = 1 + (sz + PAGE_SIZE - 1) / PAGE_SIZE; | |
2901 | } | |
2902 | ||
2903 | /* | |
2904 | * for simplicity, force the ring0 size to be a multiple of | |
2905 | * rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN | |
2906 | */ | |
2907 | sz = adapter->rx_buf_per_pkt * VMXNET3_RING_SIZE_ALIGN; | |
09c5088e SB |
2908 | ring0_size = adapter->rx_queue[0].rx_ring[0].size; |
2909 | ring0_size = (ring0_size + sz - 1) / sz * sz; | |
a53255d3 | 2910 | ring0_size = min_t(u32, ring0_size, VMXNET3_RX_RING_MAX_SIZE / |
09c5088e SB |
2911 | sz * sz); |
2912 | ring1_size = adapter->rx_queue[0].rx_ring[1].size; | |
53831aa1 SK |
2913 | ring1_size = (ring1_size + sz - 1) / sz * sz; |
2914 | ring1_size = min_t(u32, ring1_size, VMXNET3_RX_RING2_MAX_SIZE / | |
2915 | sz * sz); | |
09c5088e SB |
2916 | comp_size = ring0_size + ring1_size; |
2917 | ||
2918 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
5e264e2b CIK |
2919 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; |
2920 | ||
09c5088e SB |
2921 | rq->rx_ring[0].size = ring0_size; |
2922 | rq->rx_ring[1].size = ring1_size; | |
2923 | rq->comp_ring.size = comp_size; | |
2924 | } | |
d1a890fa SB |
2925 | } |
2926 | ||
2927 | ||
2928 | int | |
2929 | vmxnet3_create_queues(struct vmxnet3_adapter *adapter, u32 tx_ring_size, | |
3c8b3efc | 2930 | u32 rx_ring_size, u32 rx_ring2_size, |
50a5ce3e | 2931 | u16 txdata_desc_size, u16 rxdata_desc_size) |
d1a890fa | 2932 | { |
09c5088e SB |
2933 | int err = 0, i; |
2934 | ||
2935 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
2936 | struct vmxnet3_tx_queue *tq = &adapter->tx_queue[i]; | |
2937 | tq->tx_ring.size = tx_ring_size; | |
2938 | tq->data_ring.size = tx_ring_size; | |
2939 | tq->comp_ring.size = tx_ring_size; | |
3c8b3efc | 2940 | tq->txdata_desc_size = txdata_desc_size; |
09c5088e SB |
2941 | tq->shared = &adapter->tqd_start[i].ctrl; |
2942 | tq->stopped = true; | |
2943 | tq->adapter = adapter; | |
2944 | tq->qid = i; | |
2945 | err = vmxnet3_tq_create(tq, adapter); | |
2946 | /* | |
2947 | * Too late to change num_tx_queues. We cannot do away with | |
2948 | * lesser number of queues than what we asked for | |
2949 | */ | |
2950 | if (err) | |
2951 | goto queue_err; | |
2952 | } | |
d1a890fa | 2953 | |
09c5088e SB |
2954 | adapter->rx_queue[0].rx_ring[0].size = rx_ring_size; |
2955 | adapter->rx_queue[0].rx_ring[1].size = rx_ring2_size; | |
d1a890fa | 2956 | vmxnet3_adjust_rx_ring_size(adapter); |
50a5ce3e SK |
2957 | |
2958 | adapter->rxdataring_enabled = VMXNET3_VERSION_GE_3(adapter); | |
09c5088e SB |
2959 | for (i = 0; i < adapter->num_rx_queues; i++) { |
2960 | struct vmxnet3_rx_queue *rq = &adapter->rx_queue[i]; | |
2961 | /* qid and qid2 for rx queues will be assigned later when num | |
2962 | * of rx queues is finalized after allocating intrs */ | |
2963 | rq->shared = &adapter->rqd_start[i].ctrl; | |
2964 | rq->adapter = adapter; | |
50a5ce3e | 2965 | rq->data_ring.desc_size = rxdata_desc_size; |
09c5088e SB |
2966 | err = vmxnet3_rq_create(rq, adapter); |
2967 | if (err) { | |
2968 | if (i == 0) { | |
204a6e65 SH |
2969 | netdev_err(adapter->netdev, |
2970 | "Could not allocate any rx queues. " | |
2971 | "Aborting.\n"); | |
09c5088e SB |
2972 | goto queue_err; |
2973 | } else { | |
204a6e65 SH |
2974 | netdev_info(adapter->netdev, |
2975 | "Number of rx queues changed " | |
2976 | "to : %d.\n", i); | |
09c5088e SB |
2977 | adapter->num_rx_queues = i; |
2978 | err = 0; | |
2979 | break; | |
2980 | } | |
2981 | } | |
2982 | } | |
50a5ce3e SK |
2983 | |
2984 | if (!adapter->rxdataring_enabled) | |
2985 | vmxnet3_rq_destroy_all_rxdataring(adapter); | |
2986 | ||
09c5088e SB |
2987 | return err; |
2988 | queue_err: | |
2989 | vmxnet3_tq_destroy_all(adapter); | |
d1a890fa SB |
2990 | return err; |
2991 | } | |
2992 | ||
2993 | static int | |
2994 | vmxnet3_open(struct net_device *netdev) | |
2995 | { | |
2996 | struct vmxnet3_adapter *adapter; | |
09c5088e | 2997 | int err, i; |
d1a890fa SB |
2998 | |
2999 | adapter = netdev_priv(netdev); | |
3000 | ||
09c5088e SB |
3001 | for (i = 0; i < adapter->num_tx_queues; i++) |
3002 | spin_lock_init(&adapter->tx_queue[i].tx_lock); | |
d1a890fa | 3003 | |
3c8b3efc SK |
3004 | if (VMXNET3_VERSION_GE_3(adapter)) { |
3005 | unsigned long flags; | |
3006 | u16 txdata_desc_size; | |
3007 | ||
3008 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
3009 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
3010 | VMXNET3_CMD_GET_TXDATA_DESC_SIZE); | |
3011 | txdata_desc_size = VMXNET3_READ_BAR1_REG(adapter, | |
3012 | VMXNET3_REG_CMD); | |
3013 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
3014 | ||
3015 | if ((txdata_desc_size < VMXNET3_TXDATA_DESC_MIN_SIZE) || | |
3016 | (txdata_desc_size > VMXNET3_TXDATA_DESC_MAX_SIZE) || | |
3017 | (txdata_desc_size & VMXNET3_TXDATA_DESC_SIZE_MASK)) { | |
3018 | adapter->txdata_desc_size = | |
3019 | sizeof(struct Vmxnet3_TxDataDesc); | |
3020 | } else { | |
3021 | adapter->txdata_desc_size = txdata_desc_size; | |
3022 | } | |
3023 | } else { | |
3024 | adapter->txdata_desc_size = sizeof(struct Vmxnet3_TxDataDesc); | |
3025 | } | |
3026 | ||
3027 | err = vmxnet3_create_queues(adapter, | |
3028 | adapter->tx_ring_size, | |
f00e2b0a | 3029 | adapter->rx_ring_size, |
3c8b3efc | 3030 | adapter->rx_ring2_size, |
50a5ce3e SK |
3031 | adapter->txdata_desc_size, |
3032 | adapter->rxdata_desc_size); | |
d1a890fa SB |
3033 | if (err) |
3034 | goto queue_err; | |
3035 | ||
3036 | err = vmxnet3_activate_dev(adapter); | |
3037 | if (err) | |
3038 | goto activate_err; | |
3039 | ||
3040 | return 0; | |
3041 | ||
3042 | activate_err: | |
09c5088e SB |
3043 | vmxnet3_rq_destroy_all(adapter); |
3044 | vmxnet3_tq_destroy_all(adapter); | |
d1a890fa SB |
3045 | queue_err: |
3046 | return err; | |
3047 | } | |
3048 | ||
3049 | ||
3050 | static int | |
3051 | vmxnet3_close(struct net_device *netdev) | |
3052 | { | |
3053 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
3054 | ||
3055 | /* | |
3056 | * Reset_work may be in the middle of resetting the device, wait for its | |
3057 | * completion. | |
3058 | */ | |
3059 | while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
93c65d13 | 3060 | usleep_range(1000, 2000); |
d1a890fa SB |
3061 | |
3062 | vmxnet3_quiesce_dev(adapter); | |
3063 | ||
09c5088e SB |
3064 | vmxnet3_rq_destroy_all(adapter); |
3065 | vmxnet3_tq_destroy_all(adapter); | |
d1a890fa SB |
3066 | |
3067 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
3068 | ||
3069 | ||
3070 | return 0; | |
3071 | } | |
3072 | ||
3073 | ||
3074 | void | |
3075 | vmxnet3_force_close(struct vmxnet3_adapter *adapter) | |
3076 | { | |
09c5088e SB |
3077 | int i; |
3078 | ||
d1a890fa SB |
3079 | /* |
3080 | * we must clear VMXNET3_STATE_BIT_RESETTING, otherwise | |
3081 | * vmxnet3_close() will deadlock. | |
3082 | */ | |
3083 | BUG_ON(test_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)); | |
3084 | ||
3085 | /* we need to enable NAPI, otherwise dev_close will deadlock */ | |
09c5088e SB |
3086 | for (i = 0; i < adapter->num_rx_queues; i++) |
3087 | napi_enable(&adapter->rx_queue[i].napi); | |
1c4d5f51 NH |
3088 | /* |
3089 | * Need to clear the quiesce bit to ensure that vmxnet3_close | |
3090 | * can quiesce the device properly | |
3091 | */ | |
3092 | clear_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state); | |
d1a890fa SB |
3093 | dev_close(adapter->netdev); |
3094 | } | |
3095 | ||
3096 | ||
3097 | static int | |
3098 | vmxnet3_change_mtu(struct net_device *netdev, int new_mtu) | |
3099 | { | |
3100 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
3101 | int err = 0; | |
3102 | ||
d1a890fa SB |
3103 | netdev->mtu = new_mtu; |
3104 | ||
3105 | /* | |
3106 | * Reset_work may be in the middle of resetting the device, wait for its | |
3107 | * completion. | |
3108 | */ | |
3109 | while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
93c65d13 | 3110 | usleep_range(1000, 2000); |
d1a890fa SB |
3111 | |
3112 | if (netif_running(netdev)) { | |
3113 | vmxnet3_quiesce_dev(adapter); | |
3114 | vmxnet3_reset_dev(adapter); | |
3115 | ||
3116 | /* we need to re-create the rx queue based on the new mtu */ | |
09c5088e | 3117 | vmxnet3_rq_destroy_all(adapter); |
d1a890fa | 3118 | vmxnet3_adjust_rx_ring_size(adapter); |
09c5088e | 3119 | err = vmxnet3_rq_create_all(adapter); |
d1a890fa | 3120 | if (err) { |
204a6e65 SH |
3121 | netdev_err(netdev, |
3122 | "failed to re-create rx queues, " | |
3123 | " error %d. Closing it.\n", err); | |
d1a890fa SB |
3124 | goto out; |
3125 | } | |
3126 | ||
3127 | err = vmxnet3_activate_dev(adapter); | |
3128 | if (err) { | |
204a6e65 SH |
3129 | netdev_err(netdev, |
3130 | "failed to re-activate, error %d. " | |
3131 | "Closing it\n", err); | |
d1a890fa SB |
3132 | goto out; |
3133 | } | |
3134 | } | |
3135 | ||
3136 | out: | |
3137 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
3138 | if (err) | |
3139 | vmxnet3_force_close(adapter); | |
3140 | ||
3141 | return err; | |
3142 | } | |
3143 | ||
3144 | ||
3145 | static void | |
3146 | vmxnet3_declare_features(struct vmxnet3_adapter *adapter, bool dma64) | |
3147 | { | |
3148 | struct net_device *netdev = adapter->netdev; | |
3149 | ||
a0d2730c | 3150 | netdev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM | |
f646968f PM |
3151 | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_CTAG_TX | |
3152 | NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_TSO | NETIF_F_TSO6 | | |
72e85c45 | 3153 | NETIF_F_LRO; |
dacce2be RD |
3154 | |
3155 | if (VMXNET3_VERSION_GE_4(adapter)) { | |
3156 | netdev->hw_features |= NETIF_F_GSO_UDP_TUNNEL | | |
3157 | NETIF_F_GSO_UDP_TUNNEL_CSUM; | |
3158 | ||
3159 | netdev->hw_enc_features = NETIF_F_SG | NETIF_F_RXCSUM | | |
3160 | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_CTAG_TX | | |
3161 | NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_TSO | NETIF_F_TSO6 | | |
3162 | NETIF_F_LRO | NETIF_F_GSO_UDP_TUNNEL | | |
3163 | NETIF_F_GSO_UDP_TUNNEL_CSUM; | |
3164 | } | |
3165 | ||
a0d2730c | 3166 | if (dma64) |
ebbf9295 | 3167 | netdev->hw_features |= NETIF_F_HIGHDMA; |
72e85c45 | 3168 | netdev->vlan_features = netdev->hw_features & |
f646968f PM |
3169 | ~(NETIF_F_HW_VLAN_CTAG_TX | |
3170 | NETIF_F_HW_VLAN_CTAG_RX); | |
3171 | netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER; | |
d1a890fa SB |
3172 | } |
3173 | ||
3174 | ||
3175 | static void | |
3176 | vmxnet3_read_mac_addr(struct vmxnet3_adapter *adapter, u8 *mac) | |
3177 | { | |
3178 | u32 tmp; | |
3179 | ||
3180 | tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACL); | |
3181 | *(u32 *)mac = tmp; | |
3182 | ||
3183 | tmp = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_MACH); | |
3184 | mac[4] = tmp & 0xff; | |
3185 | mac[5] = (tmp >> 8) & 0xff; | |
3186 | } | |
3187 | ||
09c5088e SB |
3188 | #ifdef CONFIG_PCI_MSI |
3189 | ||
3190 | /* | |
3191 | * Enable MSIx vectors. | |
3192 | * Returns : | |
25985edc | 3193 | * VMXNET3_LINUX_MIN_MSIX_VECT when only minimum number of vectors required |
b60b869d AG |
3194 | * were enabled. |
3195 | * number of vectors which were enabled otherwise (this number is greater | |
09c5088e SB |
3196 | * than VMXNET3_LINUX_MIN_MSIX_VECT) |
3197 | */ | |
3198 | ||
3199 | static int | |
b60b869d | 3200 | vmxnet3_acquire_msix_vectors(struct vmxnet3_adapter *adapter, int nvec) |
09c5088e | 3201 | { |
c0a1be38 AG |
3202 | int ret = pci_enable_msix_range(adapter->pdev, |
3203 | adapter->intr.msix_entries, nvec, nvec); | |
09c5088e | 3204 | |
c0a1be38 AG |
3205 | if (ret == -ENOSPC && nvec > VMXNET3_LINUX_MIN_MSIX_VECT) { |
3206 | dev_err(&adapter->netdev->dev, | |
3207 | "Failed to enable %d MSI-X, trying %d\n", | |
3208 | nvec, VMXNET3_LINUX_MIN_MSIX_VECT); | |
3209 | ||
3210 | ret = pci_enable_msix_range(adapter->pdev, | |
3211 | adapter->intr.msix_entries, | |
3212 | VMXNET3_LINUX_MIN_MSIX_VECT, | |
3213 | VMXNET3_LINUX_MIN_MSIX_VECT); | |
3214 | } | |
3215 | ||
3216 | if (ret < 0) { | |
3217 | dev_err(&adapter->netdev->dev, | |
3218 | "Failed to enable MSI-X, error: %d\n", ret); | |
3219 | } | |
3220 | ||
3221 | return ret; | |
09c5088e SB |
3222 | } |
3223 | ||
3224 | ||
3225 | #endif /* CONFIG_PCI_MSI */ | |
d1a890fa SB |
3226 | |
3227 | static void | |
3228 | vmxnet3_alloc_intr_resources(struct vmxnet3_adapter *adapter) | |
3229 | { | |
3230 | u32 cfg; | |
e328d410 | 3231 | unsigned long flags; |
d1a890fa SB |
3232 | |
3233 | /* intr settings */ | |
e328d410 | 3234 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
3235 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
3236 | VMXNET3_CMD_GET_CONF_INTR); | |
3237 | cfg = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_CMD); | |
e328d410 | 3238 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
3239 | adapter->intr.type = cfg & 0x3; |
3240 | adapter->intr.mask_mode = (cfg >> 2) & 0x3; | |
3241 | ||
3242 | if (adapter->intr.type == VMXNET3_IT_AUTO) { | |
0bdc0d70 SB |
3243 | adapter->intr.type = VMXNET3_IT_MSIX; |
3244 | } | |
d1a890fa | 3245 | |
8f7e524c | 3246 | #ifdef CONFIG_PCI_MSI |
0bdc0d70 | 3247 | if (adapter->intr.type == VMXNET3_IT_MSIX) { |
b60b869d AG |
3248 | int i, nvec; |
3249 | ||
3250 | nvec = adapter->share_intr == VMXNET3_INTR_TXSHARE ? | |
3251 | 1 : adapter->num_tx_queues; | |
3252 | nvec += adapter->share_intr == VMXNET3_INTR_BUDDYSHARE ? | |
3253 | 0 : adapter->num_rx_queues; | |
3254 | nvec += 1; /* for link event */ | |
3255 | nvec = nvec > VMXNET3_LINUX_MIN_MSIX_VECT ? | |
3256 | nvec : VMXNET3_LINUX_MIN_MSIX_VECT; | |
3257 | ||
3258 | for (i = 0; i < nvec; i++) | |
3259 | adapter->intr.msix_entries[i].entry = i; | |
3260 | ||
3261 | nvec = vmxnet3_acquire_msix_vectors(adapter, nvec); | |
3262 | if (nvec < 0) | |
3263 | goto msix_err; | |
3264 | ||
09c5088e SB |
3265 | /* If we cannot allocate one MSIx vector per queue |
3266 | * then limit the number of rx queues to 1 | |
3267 | */ | |
b60b869d | 3268 | if (nvec == VMXNET3_LINUX_MIN_MSIX_VECT) { |
09c5088e | 3269 | if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE |
7e96fbf2 | 3270 | || adapter->num_rx_queues != 1) { |
09c5088e | 3271 | adapter->share_intr = VMXNET3_INTR_TXSHARE; |
204a6e65 SH |
3272 | netdev_err(adapter->netdev, |
3273 | "Number of rx queues : 1\n"); | |
09c5088e | 3274 | adapter->num_rx_queues = 1; |
09c5088e | 3275 | } |
d1a890fa | 3276 | } |
09c5088e | 3277 | |
b60b869d AG |
3278 | adapter->intr.num_intrs = nvec; |
3279 | return; | |
3280 | ||
3281 | msix_err: | |
09c5088e | 3282 | /* If we cannot allocate MSIx vectors use only one rx queue */ |
4bad25fa SH |
3283 | dev_info(&adapter->pdev->dev, |
3284 | "Failed to enable MSI-X, error %d. " | |
b60b869d | 3285 | "Limiting #rx queues to 1, try MSI.\n", nvec); |
09c5088e | 3286 | |
0bdc0d70 SB |
3287 | adapter->intr.type = VMXNET3_IT_MSI; |
3288 | } | |
d1a890fa | 3289 | |
0bdc0d70 | 3290 | if (adapter->intr.type == VMXNET3_IT_MSI) { |
b60b869d | 3291 | if (!pci_enable_msi(adapter->pdev)) { |
09c5088e | 3292 | adapter->num_rx_queues = 1; |
d1a890fa | 3293 | adapter->intr.num_intrs = 1; |
d1a890fa SB |
3294 | return; |
3295 | } | |
3296 | } | |
0bdc0d70 | 3297 | #endif /* CONFIG_PCI_MSI */ |
d1a890fa | 3298 | |
09c5088e | 3299 | adapter->num_rx_queues = 1; |
204a6e65 SH |
3300 | dev_info(&adapter->netdev->dev, |
3301 | "Using INTx interrupt, #Rx queues: 1.\n"); | |
d1a890fa SB |
3302 | adapter->intr.type = VMXNET3_IT_INTX; |
3303 | ||
3304 | /* INT-X related setting */ | |
3305 | adapter->intr.num_intrs = 1; | |
3306 | } | |
3307 | ||
3308 | ||
3309 | static void | |
3310 | vmxnet3_free_intr_resources(struct vmxnet3_adapter *adapter) | |
3311 | { | |
3312 | if (adapter->intr.type == VMXNET3_IT_MSIX) | |
3313 | pci_disable_msix(adapter->pdev); | |
3314 | else if (adapter->intr.type == VMXNET3_IT_MSI) | |
3315 | pci_disable_msi(adapter->pdev); | |
3316 | else | |
3317 | BUG_ON(adapter->intr.type != VMXNET3_IT_INTX); | |
3318 | } | |
3319 | ||
3320 | ||
3321 | static void | |
0290bd29 | 3322 | vmxnet3_tx_timeout(struct net_device *netdev, unsigned int txqueue) |
d1a890fa SB |
3323 | { |
3324 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
3325 | adapter->tx_timeout_count++; | |
3326 | ||
204a6e65 | 3327 | netdev_err(adapter->netdev, "tx hang\n"); |
d1a890fa SB |
3328 | schedule_work(&adapter->work); |
3329 | } | |
3330 | ||
3331 | ||
3332 | static void | |
3333 | vmxnet3_reset_work(struct work_struct *data) | |
3334 | { | |
3335 | struct vmxnet3_adapter *adapter; | |
3336 | ||
3337 | adapter = container_of(data, struct vmxnet3_adapter, work); | |
3338 | ||
3339 | /* if another thread is resetting the device, no need to proceed */ | |
3340 | if (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
3341 | return; | |
3342 | ||
3343 | /* if the device is closed, we must leave it alone */ | |
d9a5f210 | 3344 | rtnl_lock(); |
d1a890fa | 3345 | if (netif_running(adapter->netdev)) { |
204a6e65 | 3346 | netdev_notice(adapter->netdev, "resetting\n"); |
d1a890fa SB |
3347 | vmxnet3_quiesce_dev(adapter); |
3348 | vmxnet3_reset_dev(adapter); | |
3349 | vmxnet3_activate_dev(adapter); | |
3350 | } else { | |
204a6e65 | 3351 | netdev_info(adapter->netdev, "already closed\n"); |
d1a890fa | 3352 | } |
d9a5f210 | 3353 | rtnl_unlock(); |
d1a890fa | 3354 | |
277964e1 | 3355 | netif_wake_queue(adapter->netdev); |
d1a890fa SB |
3356 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); |
3357 | } | |
3358 | ||
3359 | ||
3a4751a3 | 3360 | static int |
d1a890fa SB |
3361 | vmxnet3_probe_device(struct pci_dev *pdev, |
3362 | const struct pci_device_id *id) | |
3363 | { | |
3364 | static const struct net_device_ops vmxnet3_netdev_ops = { | |
3365 | .ndo_open = vmxnet3_open, | |
3366 | .ndo_stop = vmxnet3_close, | |
3367 | .ndo_start_xmit = vmxnet3_xmit_frame, | |
3368 | .ndo_set_mac_address = vmxnet3_set_mac_addr, | |
3369 | .ndo_change_mtu = vmxnet3_change_mtu, | |
3dd7400b | 3370 | .ndo_fix_features = vmxnet3_fix_features, |
a0d2730c | 3371 | .ndo_set_features = vmxnet3_set_features, |
1dac3b1b | 3372 | .ndo_features_check = vmxnet3_features_check, |
95305f6c | 3373 | .ndo_get_stats64 = vmxnet3_get_stats64, |
d1a890fa | 3374 | .ndo_tx_timeout = vmxnet3_tx_timeout, |
afc4b13d | 3375 | .ndo_set_rx_mode = vmxnet3_set_mc, |
d1a890fa SB |
3376 | .ndo_vlan_rx_add_vid = vmxnet3_vlan_rx_add_vid, |
3377 | .ndo_vlan_rx_kill_vid = vmxnet3_vlan_rx_kill_vid, | |
3378 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
3379 | .ndo_poll_controller = vmxnet3_netpoll, | |
3380 | #endif | |
3381 | }; | |
3382 | int err; | |
61aeecea | 3383 | bool dma64; |
d1a890fa SB |
3384 | u32 ver; |
3385 | struct net_device *netdev; | |
3386 | struct vmxnet3_adapter *adapter; | |
3387 | u8 mac[ETH_ALEN]; | |
09c5088e SB |
3388 | int size; |
3389 | int num_tx_queues; | |
3390 | int num_rx_queues; | |
3391 | ||
e154b639 SB |
3392 | if (!pci_msi_enabled()) |
3393 | enable_mq = 0; | |
3394 | ||
09c5088e SB |
3395 | #ifdef VMXNET3_RSS |
3396 | if (enable_mq) | |
3397 | num_rx_queues = min(VMXNET3_DEVICE_MAX_RX_QUEUES, | |
3398 | (int)num_online_cpus()); | |
3399 | else | |
3400 | #endif | |
3401 | num_rx_queues = 1; | |
eebb02b1 | 3402 | num_rx_queues = rounddown_pow_of_two(num_rx_queues); |
09c5088e SB |
3403 | |
3404 | if (enable_mq) | |
3405 | num_tx_queues = min(VMXNET3_DEVICE_MAX_TX_QUEUES, | |
3406 | (int)num_online_cpus()); | |
3407 | else | |
3408 | num_tx_queues = 1; | |
3409 | ||
eebb02b1 | 3410 | num_tx_queues = rounddown_pow_of_two(num_tx_queues); |
09c5088e SB |
3411 | netdev = alloc_etherdev_mq(sizeof(struct vmxnet3_adapter), |
3412 | max(num_tx_queues, num_rx_queues)); | |
204a6e65 SH |
3413 | dev_info(&pdev->dev, |
3414 | "# of Tx queues : %d, # of Rx queues : %d\n", | |
3415 | num_tx_queues, num_rx_queues); | |
d1a890fa | 3416 | |
41de8d4c | 3417 | if (!netdev) |
d1a890fa | 3418 | return -ENOMEM; |
d1a890fa SB |
3419 | |
3420 | pci_set_drvdata(pdev, netdev); | |
3421 | adapter = netdev_priv(netdev); | |
3422 | adapter->netdev = netdev; | |
3423 | adapter->pdev = pdev; | |
3424 | ||
f00e2b0a NH |
3425 | adapter->tx_ring_size = VMXNET3_DEF_TX_RING_SIZE; |
3426 | adapter->rx_ring_size = VMXNET3_DEF_RX_RING_SIZE; | |
53831aa1 | 3427 | adapter->rx_ring2_size = VMXNET3_DEF_RX_RING2_SIZE; |
f00e2b0a | 3428 | |
61aeecea | 3429 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) == 0) { |
3430 | if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) { | |
3431 | dev_err(&pdev->dev, | |
3432 | "pci_set_consistent_dma_mask failed\n"); | |
3433 | err = -EIO; | |
3434 | goto err_set_mask; | |
3435 | } | |
3436 | dma64 = true; | |
3437 | } else { | |
3438 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) { | |
3439 | dev_err(&pdev->dev, | |
3440 | "pci_set_dma_mask failed\n"); | |
3441 | err = -EIO; | |
3442 | goto err_set_mask; | |
3443 | } | |
3444 | dma64 = false; | |
3445 | } | |
3446 | ||
83d0feff | 3447 | spin_lock_init(&adapter->cmd_lock); |
b0eb57cb AK |
3448 | adapter->adapter_pa = dma_map_single(&adapter->pdev->dev, adapter, |
3449 | sizeof(struct vmxnet3_adapter), | |
3450 | PCI_DMA_TODEVICE); | |
5738a09d AK |
3451 | if (dma_mapping_error(&adapter->pdev->dev, adapter->adapter_pa)) { |
3452 | dev_err(&pdev->dev, "Failed to map dma\n"); | |
3453 | err = -EFAULT; | |
61aeecea | 3454 | goto err_set_mask; |
5738a09d | 3455 | } |
b0eb57cb AK |
3456 | adapter->shared = dma_alloc_coherent( |
3457 | &adapter->pdev->dev, | |
3458 | sizeof(struct Vmxnet3_DriverShared), | |
3459 | &adapter->shared_pa, GFP_KERNEL); | |
d1a890fa | 3460 | if (!adapter->shared) { |
204a6e65 | 3461 | dev_err(&pdev->dev, "Failed to allocate memory\n"); |
d1a890fa SB |
3462 | err = -ENOMEM; |
3463 | goto err_alloc_shared; | |
3464 | } | |
3465 | ||
09c5088e SB |
3466 | adapter->num_rx_queues = num_rx_queues; |
3467 | adapter->num_tx_queues = num_tx_queues; | |
e4fabf2b | 3468 | adapter->rx_buf_per_pkt = 1; |
09c5088e SB |
3469 | |
3470 | size = sizeof(struct Vmxnet3_TxQueueDesc) * adapter->num_tx_queues; | |
3471 | size += sizeof(struct Vmxnet3_RxQueueDesc) * adapter->num_rx_queues; | |
b0eb57cb AK |
3472 | adapter->tqd_start = dma_alloc_coherent(&adapter->pdev->dev, size, |
3473 | &adapter->queue_desc_pa, | |
3474 | GFP_KERNEL); | |
d1a890fa SB |
3475 | |
3476 | if (!adapter->tqd_start) { | |
204a6e65 | 3477 | dev_err(&pdev->dev, "Failed to allocate memory\n"); |
d1a890fa SB |
3478 | err = -ENOMEM; |
3479 | goto err_alloc_queue_desc; | |
3480 | } | |
09c5088e | 3481 | adapter->rqd_start = (struct Vmxnet3_RxQueueDesc *)(adapter->tqd_start + |
96800ee7 | 3482 | adapter->num_tx_queues); |
d1a890fa | 3483 | |
b0eb57cb AK |
3484 | adapter->pm_conf = dma_alloc_coherent(&adapter->pdev->dev, |
3485 | sizeof(struct Vmxnet3_PMConf), | |
3486 | &adapter->pm_conf_pa, | |
3487 | GFP_KERNEL); | |
d1a890fa | 3488 | if (adapter->pm_conf == NULL) { |
d1a890fa SB |
3489 | err = -ENOMEM; |
3490 | goto err_alloc_pm; | |
3491 | } | |
3492 | ||
09c5088e SB |
3493 | #ifdef VMXNET3_RSS |
3494 | ||
b0eb57cb AK |
3495 | adapter->rss_conf = dma_alloc_coherent(&adapter->pdev->dev, |
3496 | sizeof(struct UPT1_RSSConf), | |
3497 | &adapter->rss_conf_pa, | |
3498 | GFP_KERNEL); | |
09c5088e | 3499 | if (adapter->rss_conf == NULL) { |
09c5088e SB |
3500 | err = -ENOMEM; |
3501 | goto err_alloc_rss; | |
3502 | } | |
3503 | #endif /* VMXNET3_RSS */ | |
3504 | ||
61aeecea | 3505 | err = vmxnet3_alloc_pci_resources(adapter); |
d1a890fa SB |
3506 | if (err < 0) |
3507 | goto err_alloc_pci; | |
3508 | ||
3509 | ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_VRRS); | |
a31135e3 RD |
3510 | if (ver & (1 << VMXNET3_REV_4)) { |
3511 | VMXNET3_WRITE_BAR1_REG(adapter, | |
3512 | VMXNET3_REG_VRRS, | |
3513 | 1 << VMXNET3_REV_4); | |
3514 | adapter->version = VMXNET3_REV_4 + 1; | |
3515 | } else if (ver & (1 << VMXNET3_REV_3)) { | |
6af9d787 SK |
3516 | VMXNET3_WRITE_BAR1_REG(adapter, |
3517 | VMXNET3_REG_VRRS, | |
3518 | 1 << VMXNET3_REV_3); | |
3519 | adapter->version = VMXNET3_REV_3 + 1; | |
3520 | } else if (ver & (1 << VMXNET3_REV_2)) { | |
190af10f SK |
3521 | VMXNET3_WRITE_BAR1_REG(adapter, |
3522 | VMXNET3_REG_VRRS, | |
3523 | 1 << VMXNET3_REV_2); | |
3524 | adapter->version = VMXNET3_REV_2 + 1; | |
3525 | } else if (ver & (1 << VMXNET3_REV_1)) { | |
3526 | VMXNET3_WRITE_BAR1_REG(adapter, | |
3527 | VMXNET3_REG_VRRS, | |
3528 | 1 << VMXNET3_REV_1); | |
3529 | adapter->version = VMXNET3_REV_1 + 1; | |
d1a890fa | 3530 | } else { |
204a6e65 SH |
3531 | dev_err(&pdev->dev, |
3532 | "Incompatible h/w version (0x%x) for adapter\n", ver); | |
d1a890fa SB |
3533 | err = -EBUSY; |
3534 | goto err_ver; | |
3535 | } | |
45dac1d6 | 3536 | dev_dbg(&pdev->dev, "Using device version %d\n", adapter->version); |
d1a890fa SB |
3537 | |
3538 | ver = VMXNET3_READ_BAR1_REG(adapter, VMXNET3_REG_UVRS); | |
3539 | if (ver & 1) { | |
3540 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_UVRS, 1); | |
3541 | } else { | |
204a6e65 SH |
3542 | dev_err(&pdev->dev, |
3543 | "Incompatible upt version (0x%x) for adapter\n", ver); | |
d1a890fa SB |
3544 | err = -EBUSY; |
3545 | goto err_ver; | |
3546 | } | |
3547 | ||
4edef40e SK |
3548 | if (VMXNET3_VERSION_GE_3(adapter)) { |
3549 | adapter->coal_conf = | |
3550 | dma_alloc_coherent(&adapter->pdev->dev, | |
3551 | sizeof(struct Vmxnet3_CoalesceScheme) | |
3552 | , | |
3553 | &adapter->coal_conf_pa, | |
3554 | GFP_KERNEL); | |
3555 | if (!adapter->coal_conf) { | |
3556 | err = -ENOMEM; | |
3557 | goto err_ver; | |
3558 | } | |
4edef40e SK |
3559 | adapter->coal_conf->coalMode = VMXNET3_COALESCE_DISABLED; |
3560 | adapter->default_coal_mode = true; | |
3561 | } | |
3562 | ||
d3a8a9e5 RD |
3563 | if (VMXNET3_VERSION_GE_4(adapter)) { |
3564 | adapter->default_rss_fields = true; | |
3565 | adapter->rss_fields = VMXNET3_RSS_FIELDS_DEFAULT; | |
3566 | } | |
3567 | ||
e101e7dd | 3568 | SET_NETDEV_DEV(netdev, &pdev->dev); |
d1a890fa SB |
3569 | vmxnet3_declare_features(adapter, dma64); |
3570 | ||
50a5ce3e SK |
3571 | adapter->rxdata_desc_size = VMXNET3_VERSION_GE_3(adapter) ? |
3572 | VMXNET3_DEF_RXDATA_DESC_SIZE : 0; | |
3573 | ||
4db37a78 SH |
3574 | if (adapter->num_tx_queues == adapter->num_rx_queues) |
3575 | adapter->share_intr = VMXNET3_INTR_BUDDYSHARE; | |
3576 | else | |
09c5088e SB |
3577 | adapter->share_intr = VMXNET3_INTR_DONTSHARE; |
3578 | ||
d1a890fa SB |
3579 | vmxnet3_alloc_intr_resources(adapter); |
3580 | ||
09c5088e SB |
3581 | #ifdef VMXNET3_RSS |
3582 | if (adapter->num_rx_queues > 1 && | |
3583 | adapter->intr.type == VMXNET3_IT_MSIX) { | |
3584 | adapter->rss = true; | |
7db11f75 SH |
3585 | netdev->hw_features |= NETIF_F_RXHASH; |
3586 | netdev->features |= NETIF_F_RXHASH; | |
204a6e65 | 3587 | dev_dbg(&pdev->dev, "RSS is enabled.\n"); |
09c5088e SB |
3588 | } else { |
3589 | adapter->rss = false; | |
3590 | } | |
3591 | #endif | |
3592 | ||
d1a890fa SB |
3593 | vmxnet3_read_mac_addr(adapter, mac); |
3594 | memcpy(netdev->dev_addr, mac, netdev->addr_len); | |
3595 | ||
3596 | netdev->netdev_ops = &vmxnet3_netdev_ops; | |
d1a890fa | 3597 | vmxnet3_set_ethtool_ops(netdev); |
09c5088e | 3598 | netdev->watchdog_timeo = 5 * HZ; |
d1a890fa | 3599 | |
d0c2c997 JW |
3600 | /* MTU range: 60 - 9000 */ |
3601 | netdev->min_mtu = VMXNET3_MIN_MTU; | |
3602 | netdev->max_mtu = VMXNET3_MAX_MTU; | |
3603 | ||
d1a890fa | 3604 | INIT_WORK(&adapter->work, vmxnet3_reset_work); |
e3bc4ffb | 3605 | set_bit(VMXNET3_STATE_BIT_QUIESCED, &adapter->state); |
d1a890fa | 3606 | |
09c5088e SB |
3607 | if (adapter->intr.type == VMXNET3_IT_MSIX) { |
3608 | int i; | |
3609 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
3610 | netif_napi_add(adapter->netdev, | |
3611 | &adapter->rx_queue[i].napi, | |
3612 | vmxnet3_poll_rx_only, 64); | |
3613 | } | |
3614 | } else { | |
3615 | netif_napi_add(adapter->netdev, &adapter->rx_queue[0].napi, | |
3616 | vmxnet3_poll, 64); | |
3617 | } | |
3618 | ||
3619 | netif_set_real_num_tx_queues(adapter->netdev, adapter->num_tx_queues); | |
3620 | netif_set_real_num_rx_queues(adapter->netdev, adapter->num_rx_queues); | |
3621 | ||
6cdd20c3 | 3622 | netif_carrier_off(netdev); |
d1a890fa SB |
3623 | err = register_netdev(netdev); |
3624 | ||
3625 | if (err) { | |
204a6e65 | 3626 | dev_err(&pdev->dev, "Failed to register adapter\n"); |
d1a890fa SB |
3627 | goto err_register; |
3628 | } | |
3629 | ||
4a1745fc | 3630 | vmxnet3_check_link(adapter, false); |
d1a890fa SB |
3631 | return 0; |
3632 | ||
3633 | err_register: | |
4edef40e SK |
3634 | if (VMXNET3_VERSION_GE_3(adapter)) { |
3635 | dma_free_coherent(&adapter->pdev->dev, | |
3636 | sizeof(struct Vmxnet3_CoalesceScheme), | |
3637 | adapter->coal_conf, adapter->coal_conf_pa); | |
3638 | } | |
d1a890fa SB |
3639 | vmxnet3_free_intr_resources(adapter); |
3640 | err_ver: | |
3641 | vmxnet3_free_pci_resources(adapter); | |
3642 | err_alloc_pci: | |
09c5088e | 3643 | #ifdef VMXNET3_RSS |
b0eb57cb AK |
3644 | dma_free_coherent(&adapter->pdev->dev, sizeof(struct UPT1_RSSConf), |
3645 | adapter->rss_conf, adapter->rss_conf_pa); | |
09c5088e SB |
3646 | err_alloc_rss: |
3647 | #endif | |
b0eb57cb AK |
3648 | dma_free_coherent(&adapter->pdev->dev, sizeof(struct Vmxnet3_PMConf), |
3649 | adapter->pm_conf, adapter->pm_conf_pa); | |
d1a890fa | 3650 | err_alloc_pm: |
b0eb57cb AK |
3651 | dma_free_coherent(&adapter->pdev->dev, size, adapter->tqd_start, |
3652 | adapter->queue_desc_pa); | |
d1a890fa | 3653 | err_alloc_queue_desc: |
b0eb57cb AK |
3654 | dma_free_coherent(&adapter->pdev->dev, |
3655 | sizeof(struct Vmxnet3_DriverShared), | |
3656 | adapter->shared, adapter->shared_pa); | |
d1a890fa | 3657 | err_alloc_shared: |
b0eb57cb AK |
3658 | dma_unmap_single(&adapter->pdev->dev, adapter->adapter_pa, |
3659 | sizeof(struct vmxnet3_adapter), PCI_DMA_TODEVICE); | |
61aeecea | 3660 | err_set_mask: |
d1a890fa SB |
3661 | free_netdev(netdev); |
3662 | return err; | |
3663 | } | |
3664 | ||
3665 | ||
3a4751a3 | 3666 | static void |
d1a890fa SB |
3667 | vmxnet3_remove_device(struct pci_dev *pdev) |
3668 | { | |
3669 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3670 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
09c5088e SB |
3671 | int size = 0; |
3672 | int num_rx_queues; | |
3673 | ||
3674 | #ifdef VMXNET3_RSS | |
3675 | if (enable_mq) | |
3676 | num_rx_queues = min(VMXNET3_DEVICE_MAX_RX_QUEUES, | |
3677 | (int)num_online_cpus()); | |
3678 | else | |
3679 | #endif | |
3680 | num_rx_queues = 1; | |
eebb02b1 | 3681 | num_rx_queues = rounddown_pow_of_two(num_rx_queues); |
d1a890fa | 3682 | |
23f333a2 | 3683 | cancel_work_sync(&adapter->work); |
d1a890fa SB |
3684 | |
3685 | unregister_netdev(netdev); | |
3686 | ||
3687 | vmxnet3_free_intr_resources(adapter); | |
3688 | vmxnet3_free_pci_resources(adapter); | |
4edef40e SK |
3689 | if (VMXNET3_VERSION_GE_3(adapter)) { |
3690 | dma_free_coherent(&adapter->pdev->dev, | |
3691 | sizeof(struct Vmxnet3_CoalesceScheme), | |
3692 | adapter->coal_conf, adapter->coal_conf_pa); | |
3693 | } | |
09c5088e | 3694 | #ifdef VMXNET3_RSS |
b0eb57cb AK |
3695 | dma_free_coherent(&adapter->pdev->dev, sizeof(struct UPT1_RSSConf), |
3696 | adapter->rss_conf, adapter->rss_conf_pa); | |
09c5088e | 3697 | #endif |
b0eb57cb AK |
3698 | dma_free_coherent(&adapter->pdev->dev, sizeof(struct Vmxnet3_PMConf), |
3699 | adapter->pm_conf, adapter->pm_conf_pa); | |
09c5088e SB |
3700 | |
3701 | size = sizeof(struct Vmxnet3_TxQueueDesc) * adapter->num_tx_queues; | |
3702 | size += sizeof(struct Vmxnet3_RxQueueDesc) * num_rx_queues; | |
b0eb57cb AK |
3703 | dma_free_coherent(&adapter->pdev->dev, size, adapter->tqd_start, |
3704 | adapter->queue_desc_pa); | |
3705 | dma_free_coherent(&adapter->pdev->dev, | |
3706 | sizeof(struct Vmxnet3_DriverShared), | |
3707 | adapter->shared, adapter->shared_pa); | |
3708 | dma_unmap_single(&adapter->pdev->dev, adapter->adapter_pa, | |
3709 | sizeof(struct vmxnet3_adapter), PCI_DMA_TODEVICE); | |
d1a890fa SB |
3710 | free_netdev(netdev); |
3711 | } | |
3712 | ||
e9ba47bf SB |
3713 | static void vmxnet3_shutdown_device(struct pci_dev *pdev) |
3714 | { | |
3715 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3716 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
3717 | unsigned long flags; | |
3718 | ||
3719 | /* Reset_work may be in the middle of resetting the device, wait for its | |
3720 | * completion. | |
3721 | */ | |
3722 | while (test_and_set_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state)) | |
93c65d13 | 3723 | usleep_range(1000, 2000); |
e9ba47bf SB |
3724 | |
3725 | if (test_and_set_bit(VMXNET3_STATE_BIT_QUIESCED, | |
3726 | &adapter->state)) { | |
3727 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
3728 | return; | |
3729 | } | |
3730 | spin_lock_irqsave(&adapter->cmd_lock, flags); | |
3731 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, | |
3732 | VMXNET3_CMD_QUIESCE_DEV); | |
3733 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); | |
3734 | vmxnet3_disable_all_intrs(adapter); | |
3735 | ||
3736 | clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); | |
3737 | } | |
3738 | ||
d1a890fa SB |
3739 | |
3740 | #ifdef CONFIG_PM | |
3741 | ||
3742 | static int | |
3743 | vmxnet3_suspend(struct device *device) | |
3744 | { | |
3745 | struct pci_dev *pdev = to_pci_dev(device); | |
3746 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3747 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
3748 | struct Vmxnet3_PMConf *pmConf; | |
3749 | struct ethhdr *ehdr; | |
3750 | struct arphdr *ahdr; | |
3751 | u8 *arpreq; | |
3752 | struct in_device *in_dev; | |
3753 | struct in_ifaddr *ifa; | |
83d0feff | 3754 | unsigned long flags; |
d1a890fa SB |
3755 | int i = 0; |
3756 | ||
3757 | if (!netif_running(netdev)) | |
3758 | return 0; | |
3759 | ||
51956cd6 SB |
3760 | for (i = 0; i < adapter->num_rx_queues; i++) |
3761 | napi_disable(&adapter->rx_queue[i].napi); | |
3762 | ||
d1a890fa SB |
3763 | vmxnet3_disable_all_intrs(adapter); |
3764 | vmxnet3_free_irqs(adapter); | |
3765 | vmxnet3_free_intr_resources(adapter); | |
3766 | ||
3767 | netif_device_detach(netdev); | |
09c5088e | 3768 | netif_tx_stop_all_queues(netdev); |
d1a890fa SB |
3769 | |
3770 | /* Create wake-up filters. */ | |
3771 | pmConf = adapter->pm_conf; | |
3772 | memset(pmConf, 0, sizeof(*pmConf)); | |
3773 | ||
3774 | if (adapter->wol & WAKE_UCAST) { | |
3775 | pmConf->filters[i].patternSize = ETH_ALEN; | |
3776 | pmConf->filters[i].maskSize = 1; | |
3777 | memcpy(pmConf->filters[i].pattern, netdev->dev_addr, ETH_ALEN); | |
3778 | pmConf->filters[i].mask[0] = 0x3F; /* LSB ETH_ALEN bits */ | |
3779 | ||
3843e515 | 3780 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER; |
d1a890fa SB |
3781 | i++; |
3782 | } | |
3783 | ||
3784 | if (adapter->wol & WAKE_ARP) { | |
2638eb8b FW |
3785 | rcu_read_lock(); |
3786 | ||
3787 | in_dev = __in_dev_get_rcu(netdev); | |
3788 | if (!in_dev) { | |
3789 | rcu_read_unlock(); | |
d1a890fa | 3790 | goto skip_arp; |
2638eb8b | 3791 | } |
d1a890fa | 3792 | |
2638eb8b FW |
3793 | ifa = rcu_dereference(in_dev->ifa_list); |
3794 | if (!ifa) { | |
3795 | rcu_read_unlock(); | |
d1a890fa | 3796 | goto skip_arp; |
2638eb8b | 3797 | } |
d1a890fa SB |
3798 | |
3799 | pmConf->filters[i].patternSize = ETH_HLEN + /* Ethernet header*/ | |
3800 | sizeof(struct arphdr) + /* ARP header */ | |
3801 | 2 * ETH_ALEN + /* 2 Ethernet addresses*/ | |
3802 | 2 * sizeof(u32); /*2 IPv4 addresses */ | |
3803 | pmConf->filters[i].maskSize = | |
3804 | (pmConf->filters[i].patternSize - 1) / 8 + 1; | |
3805 | ||
3806 | /* ETH_P_ARP in Ethernet header. */ | |
3807 | ehdr = (struct ethhdr *)pmConf->filters[i].pattern; | |
3808 | ehdr->h_proto = htons(ETH_P_ARP); | |
3809 | ||
3810 | /* ARPOP_REQUEST in ARP header. */ | |
3811 | ahdr = (struct arphdr *)&pmConf->filters[i].pattern[ETH_HLEN]; | |
3812 | ahdr->ar_op = htons(ARPOP_REQUEST); | |
3813 | arpreq = (u8 *)(ahdr + 1); | |
3814 | ||
3815 | /* The Unicast IPv4 address in 'tip' field. */ | |
3816 | arpreq += 2 * ETH_ALEN + sizeof(u32); | |
2638eb8b FW |
3817 | *(__be32 *)arpreq = ifa->ifa_address; |
3818 | ||
3819 | rcu_read_unlock(); | |
d1a890fa SB |
3820 | |
3821 | /* The mask for the relevant bits. */ | |
3822 | pmConf->filters[i].mask[0] = 0x00; | |
3823 | pmConf->filters[i].mask[1] = 0x30; /* ETH_P_ARP */ | |
3824 | pmConf->filters[i].mask[2] = 0x30; /* ARPOP_REQUEST */ | |
3825 | pmConf->filters[i].mask[3] = 0x00; | |
3826 | pmConf->filters[i].mask[4] = 0xC0; /* IPv4 TIP */ | |
3827 | pmConf->filters[i].mask[5] = 0x03; /* IPv4 TIP */ | |
d1a890fa | 3828 | |
3843e515 | 3829 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_FILTER; |
d1a890fa SB |
3830 | i++; |
3831 | } | |
3832 | ||
3833 | skip_arp: | |
3834 | if (adapter->wol & WAKE_MAGIC) | |
3843e515 | 3835 | pmConf->wakeUpEvents |= VMXNET3_PM_WAKEUP_MAGIC; |
d1a890fa SB |
3836 | |
3837 | pmConf->numFilters = i; | |
3838 | ||
115924b6 SB |
3839 | adapter->shared->devRead.pmConfDesc.confVer = cpu_to_le32(1); |
3840 | adapter->shared->devRead.pmConfDesc.confLen = cpu_to_le32(sizeof( | |
3841 | *pmConf)); | |
b0eb57cb AK |
3842 | adapter->shared->devRead.pmConfDesc.confPA = |
3843 | cpu_to_le64(adapter->pm_conf_pa); | |
d1a890fa | 3844 | |
83d0feff | 3845 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa SB |
3846 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
3847 | VMXNET3_CMD_UPDATE_PMCFG); | |
83d0feff | 3848 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
d1a890fa SB |
3849 | |
3850 | pci_save_state(pdev); | |
3851 | pci_enable_wake(pdev, pci_choose_state(pdev, PMSG_SUSPEND), | |
3852 | adapter->wol); | |
3853 | pci_disable_device(pdev); | |
3854 | pci_set_power_state(pdev, pci_choose_state(pdev, PMSG_SUSPEND)); | |
3855 | ||
3856 | return 0; | |
3857 | } | |
3858 | ||
3859 | ||
3860 | static int | |
3861 | vmxnet3_resume(struct device *device) | |
3862 | { | |
5ec82c1e | 3863 | int err; |
83d0feff | 3864 | unsigned long flags; |
d1a890fa SB |
3865 | struct pci_dev *pdev = to_pci_dev(device); |
3866 | struct net_device *netdev = pci_get_drvdata(pdev); | |
3867 | struct vmxnet3_adapter *adapter = netdev_priv(netdev); | |
d1a890fa SB |
3868 | |
3869 | if (!netif_running(netdev)) | |
3870 | return 0; | |
3871 | ||
d1a890fa SB |
3872 | pci_set_power_state(pdev, PCI_D0); |
3873 | pci_restore_state(pdev); | |
3874 | err = pci_enable_device_mem(pdev); | |
3875 | if (err != 0) | |
3876 | return err; | |
3877 | ||
3878 | pci_enable_wake(pdev, PCI_D0, 0); | |
3879 | ||
5ec82c1e SK |
3880 | vmxnet3_alloc_intr_resources(adapter); |
3881 | ||
3882 | /* During hibernate and suspend, device has to be reinitialized as the | |
3883 | * device state need not be preserved. | |
3884 | */ | |
3885 | ||
3886 | /* Need not check adapter state as other reset tasks cannot run during | |
3887 | * device resume. | |
3888 | */ | |
83d0feff | 3889 | spin_lock_irqsave(&adapter->cmd_lock, flags); |
d1a890fa | 3890 | VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, |
5ec82c1e | 3891 | VMXNET3_CMD_QUIESCE_DEV); |
83d0feff | 3892 | spin_unlock_irqrestore(&adapter->cmd_lock, flags); |
5ec82c1e SK |
3893 | vmxnet3_tq_cleanup_all(adapter); |
3894 | vmxnet3_rq_cleanup_all(adapter); | |
3895 | ||
3896 | vmxnet3_reset_dev(adapter); | |
3897 | err = vmxnet3_activate_dev(adapter); | |
3898 | if (err != 0) { | |
3899 | netdev_err(netdev, | |
3900 | "failed to re-activate on resume, error: %d", err); | |
3901 | vmxnet3_force_close(adapter); | |
3902 | return err; | |
3903 | } | |
3904 | netif_device_attach(netdev); | |
d1a890fa SB |
3905 | |
3906 | return 0; | |
3907 | } | |
3908 | ||
47145210 | 3909 | static const struct dev_pm_ops vmxnet3_pm_ops = { |
d1a890fa SB |
3910 | .suspend = vmxnet3_suspend, |
3911 | .resume = vmxnet3_resume, | |
5ec82c1e SK |
3912 | .freeze = vmxnet3_suspend, |
3913 | .restore = vmxnet3_resume, | |
d1a890fa SB |
3914 | }; |
3915 | #endif | |
3916 | ||
3917 | static struct pci_driver vmxnet3_driver = { | |
3918 | .name = vmxnet3_driver_name, | |
3919 | .id_table = vmxnet3_pciid_table, | |
3920 | .probe = vmxnet3_probe_device, | |
3a4751a3 | 3921 | .remove = vmxnet3_remove_device, |
e9ba47bf | 3922 | .shutdown = vmxnet3_shutdown_device, |
d1a890fa SB |
3923 | #ifdef CONFIG_PM |
3924 | .driver.pm = &vmxnet3_pm_ops, | |
3925 | #endif | |
3926 | }; | |
3927 | ||
3928 | ||
3929 | static int __init | |
3930 | vmxnet3_init_module(void) | |
3931 | { | |
204a6e65 | 3932 | pr_info("%s - version %s\n", VMXNET3_DRIVER_DESC, |
d1a890fa SB |
3933 | VMXNET3_DRIVER_VERSION_REPORT); |
3934 | return pci_register_driver(&vmxnet3_driver); | |
3935 | } | |
3936 | ||
3937 | module_init(vmxnet3_init_module); | |
3938 | ||
3939 | ||
3940 | static void | |
3941 | vmxnet3_exit_module(void) | |
3942 | { | |
3943 | pci_unregister_driver(&vmxnet3_driver); | |
3944 | } | |
3945 | ||
3946 | module_exit(vmxnet3_exit_module); | |
3947 | ||
3948 | MODULE_AUTHOR("VMware, Inc."); | |
3949 | MODULE_DESCRIPTION(VMXNET3_DRIVER_DESC); | |
3950 | MODULE_LICENSE("GPL v2"); | |
3951 | MODULE_VERSION(VMXNET3_DRIVER_VERSION_STRING); |