]> bbs.cooldavid.org Git - net-next-2.6.git/blame - drivers/net/enic/enic_main.c
git://bbs.cooldavid.org / net-next-2.6.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
bnx2: Fix hang during rmmod bnx2.
[net-next-2.6.git] / drivers / net / enic / enic_main.c
CommitLineData
01f2e4ea
SF		 1/*
2 * Copyright 2008 Cisco Systems, Inc. All rights reserved.
3 * Copyright 2007 Nuova Systems, Inc. All rights reserved.
4 *
5 * This program is free software; you may redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; version 2 of the License.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
10 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
11 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
12 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
13 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
14 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
15 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
16 * SOFTWARE.
17 *
18 */
19
20#include <linux/module.h>
21#include <linux/kernel.h>
22#include <linux/string.h>
23#include <linux/errno.h>
24#include <linux/types.h>
25#include <linux/init.h>
26#include <linux/workqueue.h>
27#include <linux/pci.h>
28#include <linux/netdevice.h>
29#include <linux/etherdevice.h>
30#include <linux/if_ether.h>
31#include <linux/if_vlan.h>
f8bd9091 32#include <linux/if_link.h>
01f2e4ea
SF		 33#include <linux/ethtool.h>
34#include <linux/in.h>
35#include <linux/ip.h>
36#include <linux/ipv6.h>
37#include <linux/tcp.h>
b7c6bfb7 38#include <net/ip6_checksum.h>
01f2e4ea
SF		 39
40#include "cq_enet_desc.h"
41#include "vnic_dev.h"
42#include "vnic_intr.h"
43#include "vnic_stats.h"
f8bd9091 44#include "vnic_vic.h"
01f2e4ea
SF		 45#include "enic_res.h"
46#include "enic.h"
47
48#define ENIC_NOTIFY_TIMER_PERIOD (2 * HZ)
ea0d7d91
SF		 49#define WQ_ENET_MAX_DESC_LEN (1 << WQ_ENET_LEN_BITS)
50#define MAX_TSO (1 << 16)
51#define ENIC_DESC_MAX_SPLITS (MAX_TSO / WQ_ENET_MAX_DESC_LEN + 1)
52
53#define PCI_DEVICE_ID_CISCO_VIC_ENET 0x0043 /* ethernet vnic */
f8bd9091 54#define PCI_DEVICE_ID_CISCO_VIC_ENET_DYN 0x0044 /* enet dynamic vnic */
01f2e4ea
SF		 55
56/* Supported devices */
a3aa1884 57static DEFINE_PCI_DEVICE_TABLE(enic_id_table) = {
ea0d7d91 58 { PCI_VDEVICE(CISCO, PCI_DEVICE_ID_CISCO_VIC_ENET) },
f8bd9091 59 { PCI_VDEVICE(CISCO, PCI_DEVICE_ID_CISCO_VIC_ENET_DYN) },
01f2e4ea
SF		 60 { 0, } /* end of table */
61};
62
63MODULE_DESCRIPTION(DRV_DESCRIPTION);
64MODULE_AUTHOR("Scott Feldman <scofeldm@cisco.com>");
65MODULE_LICENSE("GPL");
66MODULE_VERSION(DRV_VERSION);
67MODULE_DEVICE_TABLE(pci, enic_id_table);
68
69struct enic_stat {
70 char name[ETH_GSTRING_LEN];
71 unsigned int offset;
72};
73
74#define ENIC_TX_STAT(stat) \
75 { .name = #stat, .offset = offsetof(struct vnic_tx_stats, stat) / 8 }
76#define ENIC_RX_STAT(stat) \
77 { .name = #stat, .offset = offsetof(struct vnic_rx_stats, stat) / 8 }
78
79static const struct enic_stat enic_tx_stats[] = {
80 ENIC_TX_STAT(tx_frames_ok),
81 ENIC_TX_STAT(tx_unicast_frames_ok),
82 ENIC_TX_STAT(tx_multicast_frames_ok),
83 ENIC_TX_STAT(tx_broadcast_frames_ok),
84 ENIC_TX_STAT(tx_bytes_ok),
85 ENIC_TX_STAT(tx_unicast_bytes_ok),
86 ENIC_TX_STAT(tx_multicast_bytes_ok),
87 ENIC_TX_STAT(tx_broadcast_bytes_ok),
88 ENIC_TX_STAT(tx_drops),
89 ENIC_TX_STAT(tx_errors),
90 ENIC_TX_STAT(tx_tso),
91};
92
93static const struct enic_stat enic_rx_stats[] = {
94 ENIC_RX_STAT(rx_frames_ok),
95 ENIC_RX_STAT(rx_frames_total),
96 ENIC_RX_STAT(rx_unicast_frames_ok),
97 ENIC_RX_STAT(rx_multicast_frames_ok),
98 ENIC_RX_STAT(rx_broadcast_frames_ok),
99 ENIC_RX_STAT(rx_bytes_ok),
100 ENIC_RX_STAT(rx_unicast_bytes_ok),
101 ENIC_RX_STAT(rx_multicast_bytes_ok),
102 ENIC_RX_STAT(rx_broadcast_bytes_ok),
103 ENIC_RX_STAT(rx_drop),
104 ENIC_RX_STAT(rx_no_bufs),
105 ENIC_RX_STAT(rx_errors),
106 ENIC_RX_STAT(rx_rss),
107 ENIC_RX_STAT(rx_crc_errors),
108 ENIC_RX_STAT(rx_frames_64),
109 ENIC_RX_STAT(rx_frames_127),
110 ENIC_RX_STAT(rx_frames_255),
111 ENIC_RX_STAT(rx_frames_511),
112 ENIC_RX_STAT(rx_frames_1023),
113 ENIC_RX_STAT(rx_frames_1518),
114 ENIC_RX_STAT(rx_frames_to_max),
115};
116
117static const unsigned int enic_n_tx_stats = ARRAY_SIZE(enic_tx_stats);
118static const unsigned int enic_n_rx_stats = ARRAY_SIZE(enic_rx_stats);
119
f8bd9091
SF		 120static int enic_is_dynamic(struct enic *enic)
121{
122 return enic->pdev->device == PCI_DEVICE_ID_CISCO_VIC_ENET_DYN;
123}
124
01f2e4ea
SF		 125static int enic_get_settings(struct net_device *netdev,
126 struct ethtool_cmd *ecmd)
127{
128 struct enic *enic = netdev_priv(netdev);
129
130 ecmd->supported = (SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE);
131 ecmd->advertising = (ADVERTISED_10000baseT_Full | ADVERTISED_FIBRE);
132 ecmd->port = PORT_FIBRE;
133 ecmd->transceiver = XCVR_EXTERNAL;
134
135 if (netif_carrier_ok(netdev)) {
136 ecmd->speed = vnic_dev_port_speed(enic->vdev);
137 ecmd->duplex = DUPLEX_FULL;
138 } else {
139 ecmd->speed = -1;
140 ecmd->duplex = -1;
141 }
142
143 ecmd->autoneg = AUTONEG_DISABLE;
144
145 return 0;
146}
147
148static void enic_get_drvinfo(struct net_device *netdev,
149 struct ethtool_drvinfo *drvinfo)
150{
151 struct enic *enic = netdev_priv(netdev);
152 struct vnic_devcmd_fw_info *fw_info;
153
154 spin_lock(&enic->devcmd_lock);
155 vnic_dev_fw_info(enic->vdev, &fw_info);
156 spin_unlock(&enic->devcmd_lock);
157
158 strncpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
159 strncpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version));
160 strncpy(drvinfo->fw_version, fw_info->fw_version,
161 sizeof(drvinfo->fw_version));
162 strncpy(drvinfo->bus_info, pci_name(enic->pdev),
163 sizeof(drvinfo->bus_info));
164}
165
166static void enic_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
167{
168 unsigned int i;
169
170 switch (stringset) {
171 case ETH_SS_STATS:
172 for (i = 0; i < enic_n_tx_stats; i++) {
173 memcpy(data, enic_tx_stats[i].name, ETH_GSTRING_LEN);
174 data += ETH_GSTRING_LEN;
175 }
176 for (i = 0; i < enic_n_rx_stats; i++) {
177 memcpy(data, enic_rx_stats[i].name, ETH_GSTRING_LEN);
178 data += ETH_GSTRING_LEN;
179 }
180 break;
181 }
182}
183
25f0a061 184static int enic_get_sset_count(struct net_device *netdev, int sset)
01f2e4ea 185{
25f0a061
SF		 186 switch (sset) {
187 case ETH_SS_STATS:
188 return enic_n_tx_stats + enic_n_rx_stats;
189 default:
190 return -EOPNOTSUPP;
191 }
01f2e4ea
SF		 192}
193
194static void enic_get_ethtool_stats(struct net_device *netdev,
195 struct ethtool_stats *stats, u64 *data)
196{
197 struct enic *enic = netdev_priv(netdev);
198 struct vnic_stats *vstats;
199 unsigned int i;
200
201 spin_lock(&enic->devcmd_lock);
202 vnic_dev_stats_dump(enic->vdev, &vstats);
203 spin_unlock(&enic->devcmd_lock);
204
205 for (i = 0; i < enic_n_tx_stats; i++)
206 *(data++) = ((u64 *)&vstats->tx)[enic_tx_stats[i].offset];
207 for (i = 0; i < enic_n_rx_stats; i++)
208 *(data++) = ((u64 *)&vstats->rx)[enic_rx_stats[i].offset];
209}
210
211static u32 enic_get_rx_csum(struct net_device *netdev)
212{
213 struct enic *enic = netdev_priv(netdev);
214 return enic->csum_rx_enabled;
215}
216
217static int enic_set_rx_csum(struct net_device *netdev, u32 data)
218{
219 struct enic *enic = netdev_priv(netdev);
220
25f0a061
SF		 221 if (data && !ENIC_SETTING(enic, RXCSUM))
222 return -EINVAL;
223
224 enic->csum_rx_enabled = !!data;
01f2e4ea
SF		 225
226 return 0;
227}
228
229static int enic_set_tx_csum(struct net_device *netdev, u32 data)
230{
231 struct enic *enic = netdev_priv(netdev);
232
25f0a061
SF		 233 if (data && !ENIC_SETTING(enic, TXCSUM))
234 return -EINVAL;
235
236 if (data)
01f2e4ea
SF		 237 netdev->features |= NETIF_F_HW_CSUM;
238 else
239 netdev->features &= ~NETIF_F_HW_CSUM;
240
241 return 0;
242}
243
244static int enic_set_tso(struct net_device *netdev, u32 data)
245{
246 struct enic *enic = netdev_priv(netdev);
247
25f0a061
SF		 248 if (data && !ENIC_SETTING(enic, TSO))
249 return -EINVAL;
250
251 if (data)
01f2e4ea
SF		 252 netdev->features |=
253 NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN;
254 else
255 netdev->features &=
256 ~(NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN);
257
258 return 0;
259}
260
261static u32 enic_get_msglevel(struct net_device *netdev)
262{
263 struct enic *enic = netdev_priv(netdev);
264 return enic->msg_enable;
265}
266
267static void enic_set_msglevel(struct net_device *netdev, u32 value)
268{
269 struct enic *enic = netdev_priv(netdev);
270 enic->msg_enable = value;
271}
272
7c844599
SF		 273static int enic_get_coalesce(struct net_device *netdev,
274 struct ethtool_coalesce *ecmd)
275{
276 struct enic *enic = netdev_priv(netdev);
277
278 ecmd->tx_coalesce_usecs = enic->tx_coalesce_usecs;
279 ecmd->rx_coalesce_usecs = enic->rx_coalesce_usecs;
280
281 return 0;
282}
283
284static int enic_set_coalesce(struct net_device *netdev,
285 struct ethtool_coalesce *ecmd)
286{
287 struct enic *enic = netdev_priv(netdev);
288 u32 tx_coalesce_usecs;
289 u32 rx_coalesce_usecs;
290
291 tx_coalesce_usecs = min_t(u32,
292 INTR_COALESCE_HW_TO_USEC(VNIC_INTR_TIMER_MAX),
293 ecmd->tx_coalesce_usecs);
294 rx_coalesce_usecs = min_t(u32,
295 INTR_COALESCE_HW_TO_USEC(VNIC_INTR_TIMER_MAX),
296 ecmd->rx_coalesce_usecs);
297
298 switch (vnic_dev_get_intr_mode(enic->vdev)) {
299 case VNIC_DEV_INTR_MODE_INTX:
300 if (tx_coalesce_usecs != rx_coalesce_usecs)
301 return -EINVAL;
302
303 vnic_intr_coalescing_timer_set(&enic->intr[ENIC_INTX_WQ_RQ],
304 INTR_COALESCE_USEC_TO_HW(tx_coalesce_usecs));
305 break;
306 case VNIC_DEV_INTR_MODE_MSI:
307 if (tx_coalesce_usecs != rx_coalesce_usecs)
308 return -EINVAL;
309
310 vnic_intr_coalescing_timer_set(&enic->intr[0],
311 INTR_COALESCE_USEC_TO_HW(tx_coalesce_usecs));
312 break;
313 case VNIC_DEV_INTR_MODE_MSIX:
314 vnic_intr_coalescing_timer_set(&enic->intr[ENIC_MSIX_WQ],
315 INTR_COALESCE_USEC_TO_HW(tx_coalesce_usecs));
316 vnic_intr_coalescing_timer_set(&enic->intr[ENIC_MSIX_RQ],
317 INTR_COALESCE_USEC_TO_HW(rx_coalesce_usecs));
318 break;
319 default:
320 break;
321 }
322
323 enic->tx_coalesce_usecs = tx_coalesce_usecs;
324 enic->rx_coalesce_usecs = rx_coalesce_usecs;
325
326 return 0;
327}
328
0fc0b732 329static const struct ethtool_ops enic_ethtool_ops = {
01f2e4ea
SF		 330 .get_settings = enic_get_settings,
331 .get_drvinfo = enic_get_drvinfo,
332 .get_msglevel = enic_get_msglevel,
333 .set_msglevel = enic_set_msglevel,
334 .get_link = ethtool_op_get_link,
335 .get_strings = enic_get_strings,
25f0a061 336 .get_sset_count = enic_get_sset_count,
01f2e4ea
SF		 337 .get_ethtool_stats = enic_get_ethtool_stats,
338 .get_rx_csum = enic_get_rx_csum,
339 .set_rx_csum = enic_set_rx_csum,
340 .get_tx_csum = ethtool_op_get_tx_csum,
341 .set_tx_csum = enic_set_tx_csum,
342 .get_sg = ethtool_op_get_sg,
343 .set_sg = ethtool_op_set_sg,
344 .get_tso = ethtool_op_get_tso,
345 .set_tso = enic_set_tso,
7c844599
SF		 346 .get_coalesce = enic_get_coalesce,
347 .set_coalesce = enic_set_coalesce,
86ca9db7
SF		 348 .get_flags = ethtool_op_get_flags,
349 .set_flags = ethtool_op_set_flags,
01f2e4ea
SF		 350};
351
352static void enic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf)
353{
354 struct enic *enic = vnic_dev_priv(wq->vdev);
355
356 if (buf->sop)
357 pci_unmap_single(enic->pdev, buf->dma_addr,
358 buf->len, PCI_DMA_TODEVICE);
359 else
360 pci_unmap_page(enic->pdev, buf->dma_addr,
361 buf->len, PCI_DMA_TODEVICE);
362
363 if (buf->os_buf)
364 dev_kfree_skb_any(buf->os_buf);
365}
366
367static void enic_wq_free_buf(struct vnic_wq *wq,
368 struct cq_desc *cq_desc, struct vnic_wq_buf *buf, void *opaque)
369{
370 enic_free_wq_buf(wq, buf);
371}
372
373static int enic_wq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc,
374 u8 type, u16 q_number, u16 completed_index, void *opaque)
375{
376 struct enic *enic = vnic_dev_priv(vdev);
377
378 spin_lock(&enic->wq_lock[q_number]);
379
380 vnic_wq_service(&enic->wq[q_number], cq_desc,
381 completed_index, enic_wq_free_buf,
382 opaque);
383
384 if (netif_queue_stopped(enic->netdev) &&
ea0d7d91
SF		 385 vnic_wq_desc_avail(&enic->wq[q_number]) >=
386 (MAX_SKB_FRAGS + ENIC_DESC_MAX_SPLITS))
01f2e4ea
SF		 387 netif_wake_queue(enic->netdev);
388
389 spin_unlock(&enic->wq_lock[q_number]);
390
391 return 0;
392}
393
394static void enic_log_q_error(struct enic *enic)
395{
396 unsigned int i;
397 u32 error_status;
398
399 for (i = 0; i < enic->wq_count; i++) {
400 error_status = vnic_wq_error_status(&enic->wq[i]);
401 if (error_status)
402 printk(KERN_ERR PFX "%s: WQ[%d] error_status %d\n",
403 enic->netdev->name, i, error_status);
404 }
405
406 for (i = 0; i < enic->rq_count; i++) {
407 error_status = vnic_rq_error_status(&enic->rq[i]);
408 if (error_status)
409 printk(KERN_ERR PFX "%s: RQ[%d] error_status %d\n",
410 enic->netdev->name, i, error_status);
411 }
412}
413
414static void enic_link_check(struct enic *enic)
415{
416 int link_status = vnic_dev_link_status(enic->vdev);
417 int carrier_ok = netif_carrier_ok(enic->netdev);
418
419 if (link_status && !carrier_ok) {
420 printk(KERN_INFO PFX "%s: Link UP\n", enic->netdev->name);
421 netif_carrier_on(enic->netdev);
422 } else if (!link_status && carrier_ok) {
423 printk(KERN_INFO PFX "%s: Link DOWN\n", enic->netdev->name);
424 netif_carrier_off(enic->netdev);
425 }
426}
427
428static void enic_mtu_check(struct enic *enic)
429{
430 u32 mtu = vnic_dev_mtu(enic->vdev);
431
491598a4 432 if (mtu && mtu != enic->port_mtu) {
7c844599 433 enic->port_mtu = mtu;
01f2e4ea
SF		 434 if (mtu < enic->netdev->mtu)
435 printk(KERN_WARNING PFX
436 "%s: interface MTU (%d) set higher "
437 "than switch port MTU (%d)\n",
438 enic->netdev->name, enic->netdev->mtu, mtu);
01f2e4ea
SF		 439 }
440}
441
442static void enic_msglvl_check(struct enic *enic)
443{
444 u32 msg_enable = vnic_dev_msg_lvl(enic->vdev);
445
446 if (msg_enable != enic->msg_enable) {
447 printk(KERN_INFO PFX "%s: msg lvl changed from 0x%x to 0x%x\n",
448 enic->netdev->name, enic->msg_enable, msg_enable);
449 enic->msg_enable = msg_enable;
450 }
451}
452
453static void enic_notify_check(struct enic *enic)
454{
455 enic_msglvl_check(enic);
456 enic_mtu_check(enic);
457 enic_link_check(enic);
458}
459
460#define ENIC_TEST_INTR(pba, i) (pba & (1 << i))
461
462static irqreturn_t enic_isr_legacy(int irq, void *data)
463{
464 struct net_device *netdev = data;
465 struct enic *enic = netdev_priv(netdev);
466 u32 pba;
467
468 vnic_intr_mask(&enic->intr[ENIC_INTX_WQ_RQ]);
469
470 pba = vnic_intr_legacy_pba(enic->legacy_pba);
471 if (!pba) {
472 vnic_intr_unmask(&enic->intr[ENIC_INTX_WQ_RQ]);
473 return IRQ_NONE; /* not our interrupt */
474 }
475
ed8af6b2
SF		 476 if (ENIC_TEST_INTR(pba, ENIC_INTX_NOTIFY)) {
477 vnic_intr_return_all_credits(&enic->intr[ENIC_INTX_NOTIFY]);
01f2e4ea 478 enic_notify_check(enic);
ed8af6b2 479 }
01f2e4ea
SF		 480
481 if (ENIC_TEST_INTR(pba, ENIC_INTX_ERR)) {
ed8af6b2 482 vnic_intr_return_all_credits(&enic->intr[ENIC_INTX_ERR]);
01f2e4ea
SF		 483 enic_log_q_error(enic);
484 /* schedule recovery from WQ/RQ error */
485 schedule_work(&enic->reset);
486 return IRQ_HANDLED;
487 }
488
489 if (ENIC_TEST_INTR(pba, ENIC_INTX_WQ_RQ)) {
288379f0
BH		 490 if (napi_schedule_prep(&enic->napi))
491 __napi_schedule(&enic->napi);
01f2e4ea
SF		 492 } else {
493 vnic_intr_unmask(&enic->intr[ENIC_INTX_WQ_RQ]);
494 }
495
496 return IRQ_HANDLED;
497}
498
499static irqreturn_t enic_isr_msi(int irq, void *data)
500{
501 struct enic *enic = data;
502
503 /* With MSI, there is no sharing of interrupts, so this is
504 * our interrupt and there is no need to ack it. The device
505 * is not providing per-vector masking, so the OS will not
506 * write to PCI config space to mask/unmask the interrupt.
507 * We're using mask_on_assertion for MSI, so the device
508 * automatically masks the interrupt when the interrupt is
509 * generated. Later, when exiting polling, the interrupt
510 * will be unmasked (see enic_poll).
511 *
512 * Also, the device uses the same PCIe Traffic Class (TC)
513 * for Memory Write data and MSI, so there are no ordering
514 * issues; the MSI will always arrive at the Root Complex
515 * _after_ corresponding Memory Writes (i.e. descriptor
516 * writes).
517 */
518
288379f0 519 napi_schedule(&enic->napi);
01f2e4ea
SF		 520
521 return IRQ_HANDLED;
522}
523
524static irqreturn_t enic_isr_msix_rq(int irq, void *data)
525{
526 struct enic *enic = data;
527
528 /* schedule NAPI polling for RQ cleanup */
288379f0 529 napi_schedule(&enic->napi);
01f2e4ea
SF		 530
531 return IRQ_HANDLED;
532}
533
534static irqreturn_t enic_isr_msix_wq(int irq, void *data)
535{
536 struct enic *enic = data;
537 unsigned int wq_work_to_do = -1; /* no limit */
538 unsigned int wq_work_done;
539
540 wq_work_done = vnic_cq_service(&enic->cq[ENIC_CQ_WQ],
541 wq_work_to_do, enic_wq_service, NULL);
542
543 vnic_intr_return_credits(&enic->intr[ENIC_MSIX_WQ],
544 wq_work_done,
545 1 /* unmask intr */,
546 1 /* reset intr timer */);
547
548 return IRQ_HANDLED;
549}
550
551static irqreturn_t enic_isr_msix_err(int irq, void *data)
552{
553 struct enic *enic = data;
554
ed8af6b2
SF		 555 vnic_intr_return_all_credits(&enic->intr[ENIC_MSIX_ERR]);
556
01f2e4ea
SF		 557 enic_log_q_error(enic);
558
559 /* schedule recovery from WQ/RQ error */
560 schedule_work(&enic->reset);
561
562 return IRQ_HANDLED;
563}
564
565static irqreturn_t enic_isr_msix_notify(int irq, void *data)
566{
567 struct enic *enic = data;
568
ed8af6b2 569 vnic_intr_return_all_credits(&enic->intr[ENIC_MSIX_NOTIFY]);
01f2e4ea 570 enic_notify_check(enic);
01f2e4ea
SF		 571
572 return IRQ_HANDLED;
573}
574
575static inline void enic_queue_wq_skb_cont(struct enic *enic,
576 struct vnic_wq *wq, struct sk_buff *skb,
577 unsigned int len_left)
578{
579 skb_frag_t *frag;
580
581 /* Queue additional data fragments */
582 for (frag = skb_shinfo(skb)->frags; len_left; frag++) {
583 len_left -= frag->size;
584 enic_queue_wq_desc_cont(wq, skb,
585 pci_map_page(enic->pdev, frag->page,
586 frag->page_offset, frag->size,
587 PCI_DMA_TODEVICE),
588 frag->size,
589 (len_left == 0)); /* EOP? */
590 }
591}
592
593static inline void enic_queue_wq_skb_vlan(struct enic *enic,
594 struct vnic_wq *wq, struct sk_buff *skb,
595 int vlan_tag_insert, unsigned int vlan_tag)
596{
597 unsigned int head_len = skb_headlen(skb);
598 unsigned int len_left = skb->len - head_len;
599 int eop = (len_left == 0);
600
ea0d7d91
SF		 601 /* Queue the main skb fragment. The fragments are no larger
602 * than max MTU(9000)+ETH_HDR_LEN(14) bytes, which is less
603 * than WQ_ENET_MAX_DESC_LEN length. So only one descriptor
604 * per fragment is queued.
605 */
01f2e4ea
SF		 606 enic_queue_wq_desc(wq, skb,
607 pci_map_single(enic->pdev, skb->data,
608 head_len, PCI_DMA_TODEVICE),
609 head_len,
610 vlan_tag_insert, vlan_tag,
611 eop);
612
613 if (!eop)
614 enic_queue_wq_skb_cont(enic, wq, skb, len_left);
615}
616
617static inline void enic_queue_wq_skb_csum_l4(struct enic *enic,
618 struct vnic_wq *wq, struct sk_buff *skb,
619 int vlan_tag_insert, unsigned int vlan_tag)
620{
621 unsigned int head_len = skb_headlen(skb);
622 unsigned int len_left = skb->len - head_len;
623 unsigned int hdr_len = skb_transport_offset(skb);
624 unsigned int csum_offset = hdr_len + skb->csum_offset;
625 int eop = (len_left == 0);
626
ea0d7d91
SF		 627 /* Queue the main skb fragment. The fragments are no larger
628 * than max MTU(9000)+ETH_HDR_LEN(14) bytes, which is less
629 * than WQ_ENET_MAX_DESC_LEN length. So only one descriptor
630 * per fragment is queued.
631 */
01f2e4ea
SF		 632 enic_queue_wq_desc_csum_l4(wq, skb,
633 pci_map_single(enic->pdev, skb->data,
634 head_len, PCI_DMA_TODEVICE),
635 head_len,
636 csum_offset,
637 hdr_len,
638 vlan_tag_insert, vlan_tag,
639 eop);
640
641 if (!eop)
642 enic_queue_wq_skb_cont(enic, wq, skb, len_left);
643}
644
645static inline void enic_queue_wq_skb_tso(struct enic *enic,
646 struct vnic_wq *wq, struct sk_buff *skb, unsigned int mss,
647 int vlan_tag_insert, unsigned int vlan_tag)
648{
ea0d7d91
SF		 649 unsigned int frag_len_left = skb_headlen(skb);
650 unsigned int len_left = skb->len - frag_len_left;
01f2e4ea
SF		 651 unsigned int hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
652 int eop = (len_left == 0);
ea0d7d91
SF		 653 unsigned int len;
654 dma_addr_t dma_addr;
655 unsigned int offset = 0;
656 skb_frag_t *frag;
01f2e4ea
SF		 657
658 /* Preload TCP csum field with IP pseudo hdr calculated
659 * with IP length set to zero. HW will later add in length
660 * to each TCP segment resulting from the TSO.
661 */
662
09640e63 663 if (skb->protocol == cpu_to_be16(ETH_P_IP)) {
01f2e4ea
SF		 664 ip_hdr(skb)->check = 0;
665 tcp_hdr(skb)->check = ~csum_tcpudp_magic(ip_hdr(skb)->saddr,
666 ip_hdr(skb)->daddr, 0, IPPROTO_TCP, 0);
09640e63 667 } else if (skb->protocol == cpu_to_be16(ETH_P_IPV6)) {
01f2e4ea
SF		 668 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
669 &ipv6_hdr(skb)->daddr, 0, IPPROTO_TCP, 0);
670 }
671
ea0d7d91
SF		 672 /* Queue WQ_ENET_MAX_DESC_LEN length descriptors
673 * for the main skb fragment
674 */
675 while (frag_len_left) {
676 len = min(frag_len_left, (unsigned int)WQ_ENET_MAX_DESC_LEN);
677 dma_addr = pci_map_single(enic->pdev, skb->data + offset,
678 len, PCI_DMA_TODEVICE);
679 enic_queue_wq_desc_tso(wq, skb,
680 dma_addr,
681 len,
682 mss, hdr_len,
683 vlan_tag_insert, vlan_tag,
684 eop && (len == frag_len_left));
685 frag_len_left -= len;
686 offset += len;
687 }
01f2e4ea 688
ea0d7d91
SF		 689 if (eop)
690 return;
691
692 /* Queue WQ_ENET_MAX_DESC_LEN length descriptors
693 * for additional data fragments
694 */
695 for (frag = skb_shinfo(skb)->frags; len_left; frag++) {
696 len_left -= frag->size;
697 frag_len_left = frag->size;
698 offset = frag->page_offset;
699
700 while (frag_len_left) {
701 len = min(frag_len_left,
702 (unsigned int)WQ_ENET_MAX_DESC_LEN);
703 dma_addr = pci_map_page(enic->pdev, frag->page,
704 offset, len,
705 PCI_DMA_TODEVICE);
706 enic_queue_wq_desc_cont(wq, skb,
707 dma_addr,
708 len,
709 (len_left == 0) &&
710 (len == frag_len_left)); /* EOP? */
711 frag_len_left -= len;
712 offset += len;
713 }
714 }
01f2e4ea
SF		 715}
716
717static inline void enic_queue_wq_skb(struct enic *enic,
718 struct vnic_wq *wq, struct sk_buff *skb)
719{
720 unsigned int mss = skb_shinfo(skb)->gso_size;
721 unsigned int vlan_tag = 0;
722 int vlan_tag_insert = 0;
723
724 if (enic->vlan_group && vlan_tx_tag_present(skb)) {
725 /* VLAN tag from trunking driver */
726 vlan_tag_insert = 1;
727 vlan_tag = vlan_tx_tag_get(skb);
728 }
729
730 if (mss)
731 enic_queue_wq_skb_tso(enic, wq, skb, mss,
732 vlan_tag_insert, vlan_tag);
733 else if (skb->ip_summed == CHECKSUM_PARTIAL)
734 enic_queue_wq_skb_csum_l4(enic, wq, skb,
735 vlan_tag_insert, vlan_tag);
736 else
737 enic_queue_wq_skb_vlan(enic, wq, skb,
738 vlan_tag_insert, vlan_tag);
739}
740
ed8af6b2 741/* netif_tx_lock held, process context with BHs disabled, or BH */
61357325 742static netdev_tx_t enic_hard_start_xmit(struct sk_buff *skb,
d87fd25d 743 struct net_device *netdev)
01f2e4ea
SF		 744{
745 struct enic *enic = netdev_priv(netdev);
746 struct vnic_wq *wq = &enic->wq[0];
747 unsigned long flags;
748
749 if (skb->len <= 0) {
750 dev_kfree_skb(skb);
751 return NETDEV_TX_OK;
752 }
753
754 /* Non-TSO sends must fit within ENIC_NON_TSO_MAX_DESC descs,
755 * which is very likely. In the off chance it's going to take
756 * more than * ENIC_NON_TSO_MAX_DESC, linearize the skb.
757 */
758
759 if (skb_shinfo(skb)->gso_size == 0 &&
760 skb_shinfo(skb)->nr_frags + 1 > ENIC_NON_TSO_MAX_DESC &&
761 skb_linearize(skb)) {
762 dev_kfree_skb(skb);
763 return NETDEV_TX_OK;
764 }
765
766 spin_lock_irqsave(&enic->wq_lock[0], flags);
767
ea0d7d91
SF		 768 if (vnic_wq_desc_avail(wq) <
769 skb_shinfo(skb)->nr_frags + ENIC_DESC_MAX_SPLITS) {
01f2e4ea
SF		 770 netif_stop_queue(netdev);
771 /* This is a hard error, log it */
772 printk(KERN_ERR PFX "%s: BUG! Tx ring full when "
773 "queue awake!\n", netdev->name);
774 spin_unlock_irqrestore(&enic->wq_lock[0], flags);
775 return NETDEV_TX_BUSY;
776 }
777
778 enic_queue_wq_skb(enic, wq, skb);
779
ea0d7d91 780 if (vnic_wq_desc_avail(wq) < MAX_SKB_FRAGS + ENIC_DESC_MAX_SPLITS)
01f2e4ea
SF		 781 netif_stop_queue(netdev);
782
01f2e4ea
SF		 783 spin_unlock_irqrestore(&enic->wq_lock[0], flags);
784
785 return NETDEV_TX_OK;
786}
787
788/* dev_base_lock rwlock held, nominally process context */
789static struct net_device_stats *enic_get_stats(struct net_device *netdev)
790{
791 struct enic *enic = netdev_priv(netdev);
25f0a061 792 struct net_device_stats *net_stats = &netdev->stats;
01f2e4ea
SF		 793 struct vnic_stats *stats;
794
795 spin_lock(&enic->devcmd_lock);
796 vnic_dev_stats_dump(enic->vdev, &stats);
797 spin_unlock(&enic->devcmd_lock);
798
25f0a061
SF		 799 net_stats->tx_packets = stats->tx.tx_frames_ok;
800 net_stats->tx_bytes = stats->tx.tx_bytes_ok;
801 net_stats->tx_errors = stats->tx.tx_errors;
802 net_stats->tx_dropped = stats->tx.tx_drops;
01f2e4ea 803
25f0a061
SF		 804 net_stats->rx_packets = stats->rx.rx_frames_ok;
805 net_stats->rx_bytes = stats->rx.rx_bytes_ok;
806 net_stats->rx_errors = stats->rx.rx_errors;
807 net_stats->multicast = stats->rx.rx_multicast_frames_ok;
350991e1 808 net_stats->rx_over_errors = enic->rq_truncated_pkts;
bd9fb1a4 809 net_stats->rx_crc_errors = enic->rq_bad_fcs;
350991e1 810 net_stats->rx_dropped = stats->rx.rx_no_bufs + stats->rx.rx_drop;
01f2e4ea 811
25f0a061 812 return net_stats;
01f2e4ea
SF		 813}
814
815static void enic_reset_mcaddrs(struct enic *enic)
816{
817 enic->mc_count = 0;
818}
819
820static int enic_set_mac_addr(struct net_device *netdev, char *addr)
821{
f8bd9091
SF		 822 struct enic *enic = netdev_priv(netdev);
823
824 if (enic_is_dynamic(enic)) {
825 if (!is_valid_ether_addr(addr) && !is_zero_ether_addr(addr))
826 return -EADDRNOTAVAIL;
827 } else {
828 if (!is_valid_ether_addr(addr))
829 return -EADDRNOTAVAIL;
830 }
01f2e4ea
SF		 831
832 memcpy(netdev->dev_addr, addr, netdev->addr_len);
833
834 return 0;
835}
836
f8bd9091
SF		 837static int enic_dev_add_station_addr(struct enic *enic)
838{
839 int err = 0;
840
841 if (is_valid_ether_addr(enic->netdev->dev_addr)) {
842 spin_lock(&enic->devcmd_lock);
843 err = vnic_dev_add_addr(enic->vdev, enic->netdev->dev_addr);
844 spin_unlock(&enic->devcmd_lock);
845 }
846
847 return err;
848}
849
850static int enic_dev_del_station_addr(struct enic *enic)
851{
852 int err = 0;
853
854 if (is_valid_ether_addr(enic->netdev->dev_addr)) {
855 spin_lock(&enic->devcmd_lock);
856 err = vnic_dev_del_addr(enic->vdev, enic->netdev->dev_addr);
857 spin_unlock(&enic->devcmd_lock);
858 }
859
860 return err;
861}
862
863static int enic_set_mac_address_dynamic(struct net_device *netdev, void *p)
864{
865 struct enic *enic = netdev_priv(netdev);
866 struct sockaddr *saddr = p;
867 char *addr = saddr->sa_data;
868 int err;
869
870 if (netif_running(enic->netdev)) {
871 err = enic_dev_del_station_addr(enic);
872 if (err)
873 return err;
874 }
875
876 err = enic_set_mac_addr(netdev, addr);
877 if (err)
878 return err;
879
880 if (netif_running(enic->netdev)) {
881 err = enic_dev_add_station_addr(enic);
882 if (err)
883 return err;
884 }
885
886 return err;
887}
888
889static int enic_set_mac_address(struct net_device *netdev, void *p)
890{
891 return -EOPNOTSUPP;
892}
893
01f2e4ea
SF		 894/* netif_tx_lock held, BHs disabled */
895static void enic_set_multicast_list(struct net_device *netdev)
896{
897 struct enic *enic = netdev_priv(netdev);
22bedad3 898 struct netdev_hw_addr *ha;
01f2e4ea
SF		 899 int directed = 1;
900 int multicast = (netdev->flags & IFF_MULTICAST) ? 1 : 0;
901 int broadcast = (netdev->flags & IFF_BROADCAST) ? 1 : 0;
902 int promisc = (netdev->flags & IFF_PROMISC) ? 1 : 0;
4cd24eaf 903 unsigned int mc_count = netdev_mc_count(netdev);
01f2e4ea 904 int allmulti = (netdev->flags & IFF_ALLMULTI) ||
641cb85e 905 mc_count > ENIC_MULTICAST_PERFECT_FILTERS;
9959a185 906 unsigned int flags = netdev->flags | (allmulti ? IFF_ALLMULTI : 0);
01f2e4ea 907 u8 mc_addr[ENIC_MULTICAST_PERFECT_FILTERS][ETH_ALEN];
01f2e4ea
SF		 908 unsigned int i, j;
909
910 if (mc_count > ENIC_MULTICAST_PERFECT_FILTERS)
911 mc_count = ENIC_MULTICAST_PERFECT_FILTERS;
912
913 spin_lock(&enic->devcmd_lock);
914
9959a185
SF		 915 if (enic->flags != flags) {
916 enic->flags = flags;
917 vnic_dev_packet_filter(enic->vdev, directed,
918 multicast, broadcast, promisc, allmulti);
919 }
01f2e4ea
SF		 920
921 /* Is there an easier way? Trying to minimize to
922 * calls to add/del multicast addrs. We keep the
923 * addrs from the last call in enic->mc_addr and
924 * look for changes to add/del.
925 */
926
48e2f183 927 i = 0;
22bedad3 928 netdev_for_each_mc_addr(ha, netdev) {
48e2f183
JP		 929 if (i == mc_count)
930 break;
22bedad3 931 memcpy(mc_addr[i++], ha->addr, ETH_ALEN);
01f2e4ea
SF		 932 }
933
934 for (i = 0; i < enic->mc_count; i++) {
935 for (j = 0; j < mc_count; j++)
936 if (compare_ether_addr(enic->mc_addr[i],
937 mc_addr[j]) == 0)
938 break;
939 if (j == mc_count)
940 enic_del_multicast_addr(enic, enic->mc_addr[i]);
941 }
942
943 for (i = 0; i < mc_count; i++) {
944 for (j = 0; j < enic->mc_count; j++)
945 if (compare_ether_addr(mc_addr[i],
946 enic->mc_addr[j]) == 0)
947 break;
948 if (j == enic->mc_count)
949 enic_add_multicast_addr(enic, mc_addr[i]);
950 }
951
952 /* Save the list to compare against next time
953 */
954
955 for (i = 0; i < mc_count; i++)
956 memcpy(enic->mc_addr[i], mc_addr[i], ETH_ALEN);
957
958 enic->mc_count = mc_count;
959
960 spin_unlock(&enic->devcmd_lock);
961}
962
963/* rtnl lock is held */
964static void enic_vlan_rx_register(struct net_device *netdev,
965 struct vlan_group *vlan_group)
966{
967 struct enic *enic = netdev_priv(netdev);
968 enic->vlan_group = vlan_group;
969}
970
971/* rtnl lock is held */
972static void enic_vlan_rx_add_vid(struct net_device *netdev, u16 vid)
973{
974 struct enic *enic = netdev_priv(netdev);
975
976 spin_lock(&enic->devcmd_lock);
977 enic_add_vlan(enic, vid);
978 spin_unlock(&enic->devcmd_lock);
979}
980
981/* rtnl lock is held */
982static void enic_vlan_rx_kill_vid(struct net_device *netdev, u16 vid)
983{
984 struct enic *enic = netdev_priv(netdev);
985
986 spin_lock(&enic->devcmd_lock);
987 enic_del_vlan(enic, vid);
988 spin_unlock(&enic->devcmd_lock);
989}
990
991/* netif_tx_lock held, BHs disabled */
992static void enic_tx_timeout(struct net_device *netdev)
993{
994 struct enic *enic = netdev_priv(netdev);
995 schedule_work(&enic->reset);
996}
997
f8bd9091
SF		 998static int enic_vnic_dev_deinit(struct enic *enic)
999{
1000 int err;
1001
1002 spin_lock(&enic->devcmd_lock);
1003 err = vnic_dev_deinit(enic->vdev);
1004 spin_unlock(&enic->devcmd_lock);
1005
1006 return err;
1007}
1008
1009static int enic_dev_init_prov(struct enic *enic, struct vic_provinfo *vp)
1010{
1011 int err;
1012
1013 spin_lock(&enic->devcmd_lock);
1014 err = vnic_dev_init_prov(enic->vdev,
1015 (u8 *)vp, vic_provinfo_size(vp));
1016 spin_unlock(&enic->devcmd_lock);
1017
1018 return err;
1019}
1020
1021static int enic_dev_init_done(struct enic *enic, int *done, int *error)
1022{
1023 int err;
1024
1025 spin_lock(&enic->devcmd_lock);
1026 err = vnic_dev_init_done(enic->vdev, done, error);
1027 spin_unlock(&enic->devcmd_lock);
1028
1029 return err;
1030}
1031
1032static int enic_set_port_profile(struct enic *enic, u8 request, u8 *mac,
1033 char *name, u8 *instance_uuid, u8 *host_uuid)
1034{
1035 struct vic_provinfo *vp;
1036 u8 oui[3] = VIC_PROVINFO_CISCO_OUI;
6fc7f573 1037 u8 *uuid;
f8bd9091 1038 char uuid_str[38];
6fc7f573
SF		 1039 static char *uuid_fmt = "%02X%02X%02X%02X-%02X%02X-%02X%02X-"
1040 "%02X%02X-%02X%02X%02X%02X%0X%02X";
f8bd9091
SF		 1041 int err;
1042
1043 if (!name)
1044 return -EINVAL;
1045
1046 if (!is_valid_ether_addr(mac))
1047 return -EADDRNOTAVAIL;
1048
1049 vp = vic_provinfo_alloc(GFP_KERNEL, oui, VIC_PROVINFO_LINUX_TYPE);
1050 if (!vp)
1051 return -ENOMEM;
1052
1053 vic_provinfo_add_tlv(vp,
1054 VIC_LINUX_PROV_TLV_PORT_PROFILE_NAME_STR,
1055 strlen(name) + 1, name);
1056
1057 vic_provinfo_add_tlv(vp,
1058 VIC_LINUX_PROV_TLV_CLIENT_MAC_ADDR,
1059 ETH_ALEN, mac);
1060
1061 if (instance_uuid) {
6fc7f573 1062 uuid = instance_uuid;
f8bd9091 1063 sprintf(uuid_str, uuid_fmt,
6fc7f573
SF		 1064 uuid[0], uuid[1], uuid[2], uuid[3],
1065 uuid[4], uuid[5], uuid[6], uuid[7],
1066 uuid[8], uuid[9], uuid[10], uuid[11],
1067 uuid[12], uuid[13], uuid[14], uuid[15]);
f8bd9091
SF		 1068 vic_provinfo_add_tlv(vp,
1069 VIC_LINUX_PROV_TLV_CLIENT_UUID_STR,
1070 sizeof(uuid_str), uuid_str);
1071 }
1072
1073 if (host_uuid) {
6fc7f573 1074 uuid = host_uuid;
f8bd9091 1075 sprintf(uuid_str, uuid_fmt,
6fc7f573
SF		 1076 uuid[0], uuid[1], uuid[2], uuid[3],
1077 uuid[4], uuid[5], uuid[6], uuid[7],
1078 uuid[8], uuid[9], uuid[10], uuid[11],
1079 uuid[12], uuid[13], uuid[14], uuid[15]);
f8bd9091
SF		 1080 vic_provinfo_add_tlv(vp,
1081 VIC_LINUX_PROV_TLV_HOST_UUID_STR,
1082 sizeof(uuid_str), uuid_str);
1083 }
1084
1085 err = enic_vnic_dev_deinit(enic);
1086 if (err)
1087 goto err_out;
1088
1089 memset(&enic->pp, 0, sizeof(enic->pp));
1090
1091 err = enic_dev_init_prov(enic, vp);
1092 if (err)
1093 goto err_out;
1094
1095 enic->pp.request = request;
1096 memcpy(enic->pp.name, name, PORT_PROFILE_MAX);
1097 if (instance_uuid)
1098 memcpy(enic->pp.instance_uuid,
1099 instance_uuid, PORT_UUID_MAX);
1100 if (host_uuid)
1101 memcpy(enic->pp.host_uuid,
1102 host_uuid, PORT_UUID_MAX);
1103
1104err_out:
1105 vic_provinfo_free(vp);
1106
1107 return err;
1108}
1109
1110static int enic_unset_port_profile(struct enic *enic)
1111{
1112 memset(&enic->pp, 0, sizeof(enic->pp));
1113 return enic_vnic_dev_deinit(enic);
1114}
1115
1116static int enic_set_vf_port(struct net_device *netdev, int vf,
1117 struct nlattr *port[])
1118{
1119 struct enic *enic = netdev_priv(netdev);
1120 char *name = NULL;
1121 u8 *instance_uuid = NULL;
1122 u8 *host_uuid = NULL;
1123 u8 request = PORT_REQUEST_DISASSOCIATE;
1124
1125 /* don't support VFs, yet */
1126 if (vf != PORT_SELF_VF)
1127 return -EOPNOTSUPP;
1128
1129 if (port[IFLA_PORT_REQUEST])
1130 request = nla_get_u8(port[IFLA_PORT_REQUEST]);
1131
1132 switch (request) {
1133 case PORT_REQUEST_ASSOCIATE:
1134
418c437d
SF		 1135 /* If the interface mac addr hasn't been assigned,
1136 * assign a random mac addr before setting port-
1137 * profile.
1138 */
1139
1140 if (is_zero_ether_addr(netdev->dev_addr))
1141 random_ether_addr(netdev->dev_addr);
1142
f8bd9091
SF		 1143 if (port[IFLA_PORT_PROFILE])
1144 name = nla_data(port[IFLA_PORT_PROFILE]);
1145
1146 if (port[IFLA_PORT_INSTANCE_UUID])
1147 instance_uuid =
1148 nla_data(port[IFLA_PORT_INSTANCE_UUID]);
1149
1150 if (port[IFLA_PORT_HOST_UUID])
1151 host_uuid = nla_data(port[IFLA_PORT_HOST_UUID]);
1152
1153 return enic_set_port_profile(enic, request,
1154 netdev->dev_addr, name,
1155 instance_uuid, host_uuid);
1156
1157 case PORT_REQUEST_DISASSOCIATE:
1158
1159 return enic_unset_port_profile(enic);
1160
1161 default:
1162 break;
1163 }
1164
1165 return -EOPNOTSUPP;
1166}
1167
1168static int enic_get_vf_port(struct net_device *netdev, int vf,
1169 struct sk_buff *skb)
1170{
1171 struct enic *enic = netdev_priv(netdev);
1172 int err, error, done;
1173 u16 response = PORT_PROFILE_RESPONSE_SUCCESS;
1174
1175 /* don't support VFs, yet */
1176 if (vf != PORT_SELF_VF)
1177 return -EOPNOTSUPP;
1178
1179 err = enic_dev_init_done(enic, &done, &error);
1180
1181 if (err)
1182 return err;
1183
1184 switch (error) {
1185 case ERR_SUCCESS:
1186 if (!done)
1187 response = PORT_PROFILE_RESPONSE_INPROGRESS;
1188 break;
1189 case ERR_EINVAL:
1190 response = PORT_PROFILE_RESPONSE_INVALID;
1191 break;
1192 case ERR_EBADSTATE:
1193 response = PORT_PROFILE_RESPONSE_BADSTATE;
1194 break;
1195 case ERR_ENOMEM:
1196 response = PORT_PROFILE_RESPONSE_INSUFFICIENT_RESOURCES;
1197 break;
1198 default:
1199 response = PORT_PROFILE_RESPONSE_ERROR;
1200 break;
1201 }
1202
1203 NLA_PUT_U16(skb, IFLA_PORT_REQUEST, enic->pp.request);
1204 NLA_PUT_U16(skb, IFLA_PORT_RESPONSE, response);
1205 NLA_PUT(skb, IFLA_PORT_PROFILE, PORT_PROFILE_MAX,
1206 enic->pp.name);
1207 NLA_PUT(skb, IFLA_PORT_INSTANCE_UUID, PORT_UUID_MAX,
1208 enic->pp.instance_uuid);
1209 NLA_PUT(skb, IFLA_PORT_HOST_UUID, PORT_UUID_MAX,
1210 enic->pp.host_uuid);
1211
1212 return 0;
1213
1214nla_put_failure:
1215 return -EMSGSIZE;
1216}
1217
01f2e4ea
SF		 1218static void enic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf)
1219{
1220 struct enic *enic = vnic_dev_priv(rq->vdev);
1221
1222 if (!buf->os_buf)
1223 return;
1224
1225 pci_unmap_single(enic->pdev, buf->dma_addr,
1226 buf->len, PCI_DMA_FROMDEVICE);
1227 dev_kfree_skb_any(buf->os_buf);
1228}
1229
01f2e4ea
SF		 1230static int enic_rq_alloc_buf(struct vnic_rq *rq)
1231{
1232 struct enic *enic = vnic_dev_priv(rq->vdev);
d19e22dc 1233 struct net_device *netdev = enic->netdev;
01f2e4ea 1234 struct sk_buff *skb;
d19e22dc 1235 unsigned int len = netdev->mtu + ETH_HLEN;
01f2e4ea
SF		 1236 unsigned int os_buf_index = 0;
1237 dma_addr_t dma_addr;
1238
89d71a66 1239 skb = netdev_alloc_skb_ip_align(netdev, len);
01f2e4ea
SF		 1240 if (!skb)
1241 return -ENOMEM;
1242
1243 dma_addr = pci_map_single(enic->pdev, skb->data,
1244 len, PCI_DMA_FROMDEVICE);
1245
1246 enic_queue_rq_desc(rq, skb, os_buf_index,
1247 dma_addr, len);
1248
1249 return 0;
1250}
1251
4badc385
SF		 1252static int enic_rq_alloc_buf_a1(struct vnic_rq *rq)
1253{
1254 struct rq_enet_desc *desc = vnic_rq_next_desc(rq);
1255
1256 if (vnic_rq_posting_soon(rq)) {
1257
1258 /* SW workaround for A0 HW erratum: if we're just about
1259 * to write posted_index, insert a dummy desc
1260 * of type resvd
1261 */
1262
1263 rq_enet_desc_enc(desc, 0, RQ_ENET_TYPE_RESV2, 0);
1264 vnic_rq_post(rq, 0, 0, 0, 0);
1265 } else {
1266 return enic_rq_alloc_buf(rq);
1267 }
1268
1269 return 0;
1270}
1271
1272static int enic_set_rq_alloc_buf(struct enic *enic)
1273{
1274 enum vnic_dev_hw_version hw_ver;
1275 int err;
1276
1277 err = vnic_dev_hw_version(enic->vdev, &hw_ver);
1278 if (err)
1279 return err;
1280
1281 switch (hw_ver) {
1282 case VNIC_DEV_HW_VER_A1:
1283 enic->rq_alloc_buf = enic_rq_alloc_buf_a1;
1284 break;
1285 case VNIC_DEV_HW_VER_A2:
1286 case VNIC_DEV_HW_VER_UNKNOWN:
1287 enic->rq_alloc_buf = enic_rq_alloc_buf;
1288 break;
1289 default:
1290 return -ENODEV;
1291 }
1292
1293 return 0;
1294}
1295
01f2e4ea
SF		 1296static int enic_get_skb_header(struct sk_buff *skb, void **iphdr,
1297 void **tcph, u64 *hdr_flags, void *priv)
1298{
1299 struct cq_enet_rq_desc *cq_desc = priv;
1300 unsigned int ip_len;
1301 struct iphdr *iph;
1302
1303 u8 type, color, eop, sop, ingress_port, vlan_stripped;
1304 u8 fcoe, fcoe_sof, fcoe_fc_crc_ok, fcoe_enc_error, fcoe_eof;
1305 u8 tcp_udp_csum_ok, udp, tcp, ipv4_csum_ok;
1306 u8 ipv6, ipv4, ipv4_fragment, fcs_ok, rss_type, csum_not_calc;
1307 u8 packet_error;
1308 u16 q_number, completed_index, bytes_written, vlan, checksum;
1309 u32 rss_hash;
1310
1311 cq_enet_rq_desc_dec(cq_desc,
1312 &type, &color, &q_number, &completed_index,
1313 &ingress_port, &fcoe, &eop, &sop, &rss_type,
1314 &csum_not_calc, &rss_hash, &bytes_written,
1315 &packet_error, &vlan_stripped, &vlan, &checksum,
1316 &fcoe_sof, &fcoe_fc_crc_ok, &fcoe_enc_error,
1317 &fcoe_eof, &tcp_udp_csum_ok, &udp, &tcp,
1318 &ipv4_csum_ok, &ipv6, &ipv4, &ipv4_fragment,
1319 &fcs_ok);
1320
1321 if (!(ipv4 && tcp && !ipv4_fragment))
1322 return -1;
1323
1324 skb_reset_network_header(skb);
1325 iph = ip_hdr(skb);
1326
1327 ip_len = ip_hdrlen(skb);
1328 skb_set_transport_header(skb, ip_len);
1329
1330 /* check if ip header and tcp header are complete */
1331 if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb))
1332 return -1;
1333
1334 *hdr_flags = LRO_IPV4 | LRO_TCP;
1335 *tcph = tcp_hdr(skb);
1336 *iphdr = iph;
1337
1338 return 0;
1339}
1340
1341static void enic_rq_indicate_buf(struct vnic_rq *rq,
1342 struct cq_desc *cq_desc, struct vnic_rq_buf *buf,
1343 int skipped, void *opaque)
1344{
1345 struct enic *enic = vnic_dev_priv(rq->vdev);
86ca9db7 1346 struct net_device *netdev = enic->netdev;
01f2e4ea
SF		 1347 struct sk_buff *skb;
1348
1349 u8 type, color, eop, sop, ingress_port, vlan_stripped;
1350 u8 fcoe, fcoe_sof, fcoe_fc_crc_ok, fcoe_enc_error, fcoe_eof;
1351 u8 tcp_udp_csum_ok, udp, tcp, ipv4_csum_ok;
1352 u8 ipv6, ipv4, ipv4_fragment, fcs_ok, rss_type, csum_not_calc;
1353 u8 packet_error;
1354 u16 q_number, completed_index, bytes_written, vlan, checksum;
1355 u32 rss_hash;
1356
1357 if (skipped)
1358 return;
1359
1360 skb = buf->os_buf;
1361 prefetch(skb->data - NET_IP_ALIGN);
1362 pci_unmap_single(enic->pdev, buf->dma_addr,
1363 buf->len, PCI_DMA_FROMDEVICE);
1364
1365 cq_enet_rq_desc_dec((struct cq_enet_rq_desc *)cq_desc,
1366 &type, &color, &q_number, &completed_index,
1367 &ingress_port, &fcoe, &eop, &sop, &rss_type,
1368 &csum_not_calc, &rss_hash, &bytes_written,
1369 &packet_error, &vlan_stripped, &vlan, &checksum,
1370 &fcoe_sof, &fcoe_fc_crc_ok, &fcoe_enc_error,
1371 &fcoe_eof, &tcp_udp_csum_ok, &udp, &tcp,
1372 &ipv4_csum_ok, &ipv6, &ipv4, &ipv4_fragment,
1373 &fcs_ok);
1374
1375 if (packet_error) {
1376
350991e1
SF		 1377 if (!fcs_ok) {
1378 if (bytes_written > 0)
1379 enic->rq_bad_fcs++;
1380 else if (bytes_written == 0)
1381 enic->rq_truncated_pkts++;
1382 }
01f2e4ea
SF		 1383
1384 dev_kfree_skb_any(skb);
1385
1386 return;
1387 }
1388
1389 if (eop && bytes_written > 0) {
1390
1391 /* Good receive
1392 */
1393
1394 skb_put(skb, bytes_written);
86ca9db7 1395 skb->protocol = eth_type_trans(skb, netdev);
01f2e4ea
SF		 1396
1397 if (enic->csum_rx_enabled && !csum_not_calc) {
1398 skb->csum = htons(checksum);
1399 skb->ip_summed = CHECKSUM_COMPLETE;
1400 }
1401
86ca9db7 1402 skb->dev = netdev;
01f2e4ea
SF		 1403
1404 if (enic->vlan_group && vlan_stripped) {
1405
86ca9db7 1406 if ((netdev->features & NETIF_F_LRO) && ipv4)
01f2e4ea
SF		 1407 lro_vlan_hwaccel_receive_skb(&enic->lro_mgr,
1408 skb, enic->vlan_group,
1409 vlan, cq_desc);
1410 else
1411 vlan_hwaccel_receive_skb(skb,
1412 enic->vlan_group, vlan);
1413
1414 } else {
1415
86ca9db7 1416 if ((netdev->features & NETIF_F_LRO) && ipv4)
01f2e4ea
SF		 1417 lro_receive_skb(&enic->lro_mgr, skb, cq_desc);
1418 else
1419 netif_receive_skb(skb);
1420
1421 }
1422
1423 } else {
1424
1425 /* Buffer overflow
1426 */
1427
1428 dev_kfree_skb_any(skb);
1429 }
1430}
1431
1432static int enic_rq_service(struct vnic_dev *vdev, struct cq_desc *cq_desc,
1433 u8 type, u16 q_number, u16 completed_index, void *opaque)
1434{
1435 struct enic *enic = vnic_dev_priv(vdev);
1436
1437 vnic_rq_service(&enic->rq[q_number], cq_desc,
1438 completed_index, VNIC_RQ_RETURN_DESC,
1439 enic_rq_indicate_buf, opaque);
1440
1441 return 0;
1442}
1443
01f2e4ea
SF		 1444static int enic_poll(struct napi_struct *napi, int budget)
1445{
1446 struct enic *enic = container_of(napi, struct enic, napi);
1447 struct net_device *netdev = enic->netdev;
1448 unsigned int rq_work_to_do = budget;
1449 unsigned int wq_work_to_do = -1; /* no limit */
1450 unsigned int work_done, rq_work_done, wq_work_done;
2d6ddced 1451 int err;
01f2e4ea
SF		 1452
1453 /* Service RQ (first) and WQ
1454 */
1455
1456 rq_work_done = vnic_cq_service(&enic->cq[ENIC_CQ_RQ],
1457 rq_work_to_do, enic_rq_service, NULL);
1458
1459 wq_work_done = vnic_cq_service(&enic->cq[ENIC_CQ_WQ],
1460 wq_work_to_do, enic_wq_service, NULL);
1461
1462 /* Accumulate intr event credits for this polling
1463 * cycle. An intr event is the completion of a
1464 * a WQ or RQ packet.
1465 */
1466
1467 work_done = rq_work_done + wq_work_done;
1468
1469 if (work_done > 0)
1470 vnic_intr_return_credits(&enic->intr[ENIC_INTX_WQ_RQ],
1471 work_done,
1472 0 /* don't unmask intr */,
1473 0 /* don't reset intr timer */);
1474
2d6ddced 1475 err = vnic_rq_fill(&enic->rq[0], enic->rq_alloc_buf);
01f2e4ea 1476
2d6ddced
SF		 1477 /* Buffer allocation failed. Stay in polling
1478 * mode so we can try to fill the ring again.
1479 */
01f2e4ea 1480
2d6ddced
SF		 1481 if (err)
1482 rq_work_done = rq_work_to_do;
01f2e4ea 1483
2d6ddced 1484 if (rq_work_done < rq_work_to_do) {
01f2e4ea 1485
2d6ddced
SF		 1486 /* Some work done, but not enough to stay in polling,
1487 * flush all LROs and exit polling
01f2e4ea
SF		 1488 */
1489
86ca9db7 1490 if (netdev->features & NETIF_F_LRO)
01f2e4ea
SF		 1491 lro_flush_all(&enic->lro_mgr);
1492
288379f0 1493 napi_complete(napi);
ed8af6b2 1494 vnic_intr_unmask(&enic->intr[ENIC_INTX_WQ_RQ]);
01f2e4ea
SF		 1495 }
1496
1497 return rq_work_done;
1498}
1499
1500static int enic_poll_msix(struct napi_struct *napi, int budget)
1501{
1502 struct enic *enic = container_of(napi, struct enic, napi);
1503 struct net_device *netdev = enic->netdev;
1504 unsigned int work_to_do = budget;
1505 unsigned int work_done;
2d6ddced 1506 int err;
01f2e4ea
SF		 1507
1508 /* Service RQ
1509 */
1510
1511 work_done = vnic_cq_service(&enic->cq[ENIC_CQ_RQ],
1512 work_to_do, enic_rq_service, NULL);
1513
2d6ddced
SF		 1514 /* Return intr event credits for this polling
1515 * cycle. An intr event is the completion of a
1516 * RQ packet.
1517 */
01f2e4ea 1518
2d6ddced 1519 if (work_done > 0)
01f2e4ea
SF		 1520 vnic_intr_return_credits(&enic->intr[ENIC_MSIX_RQ],
1521 work_done,
1522 0 /* don't unmask intr */,
1523 0 /* don't reset intr timer */);
01f2e4ea 1524
2d6ddced
SF		 1525 err = vnic_rq_fill(&enic->rq[0], enic->rq_alloc_buf);
1526
1527 /* Buffer allocation failed. Stay in polling mode
1528 * so we can try to fill the ring again.
1529 */
1530
1531 if (err)
1532 work_done = work_to_do;
1533
1534 if (work_done < work_to_do) {
1535
1536 /* Some work done, but not enough to stay in polling,
1537 * flush all LROs and exit polling
01f2e4ea
SF		 1538 */
1539
86ca9db7 1540 if (netdev->features & NETIF_F_LRO)
01f2e4ea
SF		 1541 lro_flush_all(&enic->lro_mgr);
1542
288379f0 1543 napi_complete(napi);
01f2e4ea
SF		 1544 vnic_intr_unmask(&enic->intr[ENIC_MSIX_RQ]);
1545 }
1546
1547 return work_done;
1548}
1549
1550static void enic_notify_timer(unsigned long data)
1551{
1552 struct enic *enic = (struct enic *)data;
1553
1554 enic_notify_check(enic);
1555
25f0a061
SF		 1556 mod_timer(&enic->notify_timer,
1557 round_jiffies(jiffies + ENIC_NOTIFY_TIMER_PERIOD));
01f2e4ea
SF		 1558}
1559
1560static void enic_free_intr(struct enic *enic)
1561{
1562 struct net_device *netdev = enic->netdev;
1563 unsigned int i;
1564
1565 switch (vnic_dev_get_intr_mode(enic->vdev)) {
1566 case VNIC_DEV_INTR_MODE_INTX:
01f2e4ea
SF		 1567 free_irq(enic->pdev->irq, netdev);
1568 break;
8f4d248c
SF		 1569 case VNIC_DEV_INTR_MODE_MSI:
1570 free_irq(enic->pdev->irq, enic);
1571 break;
01f2e4ea
SF		 1572 case VNIC_DEV_INTR_MODE_MSIX:
1573 for (i = 0; i < ARRAY_SIZE(enic->msix); i++)
1574 if (enic->msix[i].requested)
1575 free_irq(enic->msix_entry[i].vector,
1576 enic->msix[i].devid);
1577 break;
1578 default:
1579 break;
1580 }
1581}
1582
1583static int enic_request_intr(struct enic *enic)
1584{
1585 struct net_device *netdev = enic->netdev;
1586 unsigned int i;
1587 int err = 0;
1588
1589 switch (vnic_dev_get_intr_mode(enic->vdev)) {
1590
1591 case VNIC_DEV_INTR_MODE_INTX:
1592
1593 err = request_irq(enic->pdev->irq, enic_isr_legacy,
1594 IRQF_SHARED, netdev->name, netdev);
1595 break;
1596
1597 case VNIC_DEV_INTR_MODE_MSI:
1598
1599 err = request_irq(enic->pdev->irq, enic_isr_msi,
1600 0, netdev->name, enic);
1601 break;
1602
1603 case VNIC_DEV_INTR_MODE_MSIX:
1604
1605 sprintf(enic->msix[ENIC_MSIX_RQ].devname,
8f4d248c 1606 "%.11s-rx-0", netdev->name);
01f2e4ea
SF		 1607 enic->msix[ENIC_MSIX_RQ].isr = enic_isr_msix_rq;
1608 enic->msix[ENIC_MSIX_RQ].devid = enic;
1609
1610 sprintf(enic->msix[ENIC_MSIX_WQ].devname,
8f4d248c 1611 "%.11s-tx-0", netdev->name);
01f2e4ea
SF		 1612 enic->msix[ENIC_MSIX_WQ].isr = enic_isr_msix_wq;
1613 enic->msix[ENIC_MSIX_WQ].devid = enic;
1614
1615 sprintf(enic->msix[ENIC_MSIX_ERR].devname,
1616 "%.11s-err", netdev->name);
1617 enic->msix[ENIC_MSIX_ERR].isr = enic_isr_msix_err;
1618 enic->msix[ENIC_MSIX_ERR].devid = enic;
1619
1620 sprintf(enic->msix[ENIC_MSIX_NOTIFY].devname,
1621 "%.11s-notify", netdev->name);
1622 enic->msix[ENIC_MSIX_NOTIFY].isr = enic_isr_msix_notify;
1623 enic->msix[ENIC_MSIX_NOTIFY].devid = enic;
1624
1625 for (i = 0; i < ARRAY_SIZE(enic->msix); i++) {
1626 err = request_irq(enic->msix_entry[i].vector,
1627 enic->msix[i].isr, 0,
1628 enic->msix[i].devname,
1629 enic->msix[i].devid);
1630 if (err) {
1631 enic_free_intr(enic);
1632 break;
1633 }
1634 enic->msix[i].requested = 1;
1635 }
1636
1637 break;
1638
1639 default:
1640 break;
1641 }
1642
1643 return err;
1644}
1645
b3d18d19
SF		 1646static void enic_synchronize_irqs(struct enic *enic)
1647{
1648 unsigned int i;
1649
1650 switch (vnic_dev_get_intr_mode(enic->vdev)) {
1651 case VNIC_DEV_INTR_MODE_INTX:
1652 case VNIC_DEV_INTR_MODE_MSI:
1653 synchronize_irq(enic->pdev->irq);
1654 break;
1655 case VNIC_DEV_INTR_MODE_MSIX:
1656 for (i = 0; i < enic->intr_count; i++)
1657 synchronize_irq(enic->msix_entry[i].vector);
1658 break;
1659 default:
1660 break;
1661 }
1662}
1663
01f2e4ea
SF		 1664static int enic_notify_set(struct enic *enic)
1665{
1666 int err;
1667
56ac88b3 1668 spin_lock(&enic->devcmd_lock);
01f2e4ea
SF		 1669 switch (vnic_dev_get_intr_mode(enic->vdev)) {
1670 case VNIC_DEV_INTR_MODE_INTX:
1671 err = vnic_dev_notify_set(enic->vdev, ENIC_INTX_NOTIFY);
1672 break;
1673 case VNIC_DEV_INTR_MODE_MSIX:
1674 err = vnic_dev_notify_set(enic->vdev, ENIC_MSIX_NOTIFY);
1675 break;
1676 default:
1677 err = vnic_dev_notify_set(enic->vdev, -1 /* no intr */);
1678 break;
1679 }
56ac88b3 1680 spin_unlock(&enic->devcmd_lock);
01f2e4ea
SF		 1681
1682 return err;
1683}
1684
1685static void enic_notify_timer_start(struct enic *enic)
1686{
1687 switch (vnic_dev_get_intr_mode(enic->vdev)) {
1688 case VNIC_DEV_INTR_MODE_MSI:
1689 mod_timer(&enic->notify_timer, jiffies);
1690 break;
1691 default:
1692 /* Using intr for notification for INTx/MSI-X */
1693 break;
1694 };
1695}
1696
1697/* rtnl lock is held, process context */
1698static int enic_open(struct net_device *netdev)
1699{
1700 struct enic *enic = netdev_priv(netdev);
1701 unsigned int i;
1702 int err;
1703
4b75a442
SF		 1704 err = enic_request_intr(enic);
1705 if (err) {
1706 printk(KERN_ERR PFX "%s: Unable to request irq.\n",
1707 netdev->name);
1708 return err;
1709 }
1710
1711 err = enic_notify_set(enic);
1712 if (err) {
1713 printk(KERN_ERR PFX
1714 "%s: Failed to alloc notify buffer, aborting.\n",
1715 netdev->name);
1716 goto err_out_free_intr;
1717 }
1718
01f2e4ea 1719 for (i = 0; i < enic->rq_count; i++) {
2d6ddced
SF		 1720 vnic_rq_fill(&enic->rq[i], enic->rq_alloc_buf);
1721 /* Need at least one buffer on ring to get going */
1722 if (vnic_rq_desc_used(&enic->rq[i]) == 0) {
01f2e4ea
SF		 1723 printk(KERN_ERR PFX
1724 "%s: Unable to alloc receive buffers.\n",
1725 netdev->name);
2d6ddced 1726 err = -ENOMEM;
4b75a442 1727 goto err_out_notify_unset;
01f2e4ea
SF		 1728 }
1729 }
1730
1731 for (i = 0; i < enic->wq_count; i++)
1732 vnic_wq_enable(&enic->wq[i]);
1733 for (i = 0; i < enic->rq_count; i++)
1734 vnic_rq_enable(&enic->rq[i]);
1735
f8bd9091 1736 enic_dev_add_station_addr(enic);
01f2e4ea
SF		 1737 enic_set_multicast_list(netdev);
1738
1739 netif_wake_queue(netdev);
1740 napi_enable(&enic->napi);
56ac88b3 1741 spin_lock(&enic->devcmd_lock);
01f2e4ea 1742 vnic_dev_enable(enic->vdev);
56ac88b3 1743 spin_unlock(&enic->devcmd_lock);
01f2e4ea
SF		 1744
1745 for (i = 0; i < enic->intr_count; i++)
1746 vnic_intr_unmask(&enic->intr[i]);
1747
1748 enic_notify_timer_start(enic);
1749
1750 return 0;
4b75a442
SF		 1751
1752err_out_notify_unset:
56ac88b3 1753 spin_lock(&enic->devcmd_lock);
4b75a442 1754 vnic_dev_notify_unset(enic->vdev);
56ac88b3 1755 spin_unlock(&enic->devcmd_lock);
4b75a442
SF		 1756err_out_free_intr:
1757 enic_free_intr(enic);
1758
1759 return err;
01f2e4ea
SF		 1760}
1761
1762/* rtnl lock is held, process context */
1763static int enic_stop(struct net_device *netdev)
1764{
1765 struct enic *enic = netdev_priv(netdev);
1766 unsigned int i;
1767 int err;
1768
b3d18d19
SF		 1769 for (i = 0; i < enic->intr_count; i++)
1770 vnic_intr_mask(&enic->intr[i]);
1771
1772 enic_synchronize_irqs(enic);
1773
01f2e4ea
SF		 1774 del_timer_sync(&enic->notify_timer);
1775
56ac88b3 1776 spin_lock(&enic->devcmd_lock);
01f2e4ea 1777 vnic_dev_disable(enic->vdev);
56ac88b3 1778 spin_unlock(&enic->devcmd_lock);
01f2e4ea 1779 napi_disable(&enic->napi);
b3d18d19
SF		 1780 netif_carrier_off(netdev);
1781 netif_tx_disable(netdev);
01f2e4ea 1782
f8bd9091
SF		 1783 enic_dev_del_station_addr(enic);
1784
01f2e4ea
SF		 1785 for (i = 0; i < enic->wq_count; i++) {
1786 err = vnic_wq_disable(&enic->wq[i]);
1787 if (err)
1788 return err;
1789 }
1790 for (i = 0; i < enic->rq_count; i++) {
1791 err = vnic_rq_disable(&enic->rq[i]);
1792 if (err)
1793 return err;
1794 }
1795
56ac88b3 1796 spin_lock(&enic->devcmd_lock);
4b75a442 1797 vnic_dev_notify_unset(enic->vdev);
56ac88b3 1798 spin_unlock(&enic->devcmd_lock);
4b75a442
SF		 1799 enic_free_intr(enic);
1800
01f2e4ea
SF		 1801 for (i = 0; i < enic->wq_count; i++)
1802 vnic_wq_clean(&enic->wq[i], enic_free_wq_buf);
1803 for (i = 0; i < enic->rq_count; i++)
1804 vnic_rq_clean(&enic->rq[i], enic_free_rq_buf);
1805 for (i = 0; i < enic->cq_count; i++)
1806 vnic_cq_clean(&enic->cq[i]);
1807 for (i = 0; i < enic->intr_count; i++)
1808 vnic_intr_clean(&enic->intr[i]);
1809
1810 return 0;
1811}
1812
1813static int enic_change_mtu(struct net_device *netdev, int new_mtu)
1814{
1815 struct enic *enic = netdev_priv(netdev);
1816 int running = netif_running(netdev);
1817
25f0a061
SF		 1818 if (new_mtu < ENIC_MIN_MTU || new_mtu > ENIC_MAX_MTU)
1819 return -EINVAL;
1820
01f2e4ea
SF		 1821 if (running)
1822 enic_stop(netdev);
1823
01f2e4ea
SF		 1824 netdev->mtu = new_mtu;
1825
1826 if (netdev->mtu > enic->port_mtu)
1827 printk(KERN_WARNING PFX
1828 "%s: interface MTU (%d) set higher "
1829 "than port MTU (%d)\n",
1830 netdev->name, netdev->mtu, enic->port_mtu);
1831
1832 if (running)
1833 enic_open(netdev);
1834
1835 return 0;
1836}
1837
1838#ifdef CONFIG_NET_POLL_CONTROLLER
1839static void enic_poll_controller(struct net_device *netdev)
1840{
1841 struct enic *enic = netdev_priv(netdev);
1842 struct vnic_dev *vdev = enic->vdev;
1843
1844 switch (vnic_dev_get_intr_mode(vdev)) {
1845 case VNIC_DEV_INTR_MODE_MSIX:
1846 enic_isr_msix_rq(enic->pdev->irq, enic);
1847 enic_isr_msix_wq(enic->pdev->irq, enic);
1848 break;
1849 case VNIC_DEV_INTR_MODE_MSI:
1850 enic_isr_msi(enic->pdev->irq, enic);
1851 break;
1852 case VNIC_DEV_INTR_MODE_INTX:
1853 enic_isr_legacy(enic->pdev->irq, netdev);
1854 break;
1855 default:
1856 break;
1857 }
1858}
1859#endif
1860
1861static int enic_dev_wait(struct vnic_dev *vdev,
1862 int (*start)(struct vnic_dev *, int),
1863 int (*finished)(struct vnic_dev *, int *),
1864 int arg)
1865{
1866 unsigned long time;
1867 int done;
1868 int err;
1869
1870 BUG_ON(in_interrupt());
1871
1872 err = start(vdev, arg);
1873 if (err)
1874 return err;
1875
1876 /* Wait for func to complete...2 seconds max
1877 */
1878
1879 time = jiffies + (HZ * 2);
1880 do {
1881
1882 err = finished(vdev, &done);
1883 if (err)
1884 return err;
1885
1886 if (done)
1887 return 0;
1888
1889 schedule_timeout_uninterruptible(HZ / 10);
1890
1891 } while (time_after(time, jiffies));
1892
1893 return -ETIMEDOUT;
1894}
1895
1896static int enic_dev_open(struct enic *enic)
1897{
1898 int err;
1899
1900 err = enic_dev_wait(enic->vdev, vnic_dev_open,
1901 vnic_dev_open_done, 0);
1902 if (err)
1903 printk(KERN_ERR PFX
1904 "vNIC device open failed, err %d.\n", err);
1905
1906 return err;
1907}
1908
1909static int enic_dev_soft_reset(struct enic *enic)
1910{
1911 int err;
1912
1913 err = enic_dev_wait(enic->vdev, vnic_dev_soft_reset,
1914 vnic_dev_soft_reset_done, 0);
1915 if (err)
1916 printk(KERN_ERR PFX
1917 "vNIC soft reset failed, err %d.\n", err);
1918
1919 return err;
1920}
1921
68f71708
SF		 1922static int enic_set_niccfg(struct enic *enic)
1923{
1924 const u8 rss_default_cpu = 0;
1925 const u8 rss_hash_type = 0;
1926 const u8 rss_hash_bits = 0;
1927 const u8 rss_base_cpu = 0;
1928 const u8 rss_enable = 0;
1929 const u8 tso_ipid_split_en = 0;
1930 const u8 ig_vlan_strip_en = 1;
1931
1932 /* Enable VLAN tag stripping. RSS not enabled (yet).
6ba9cdc0 1933 */
68f71708
SF		 1934
1935 return enic_set_nic_cfg(enic,
1936 rss_default_cpu, rss_hash_type,
1937 rss_hash_bits, rss_base_cpu,
1938 rss_enable, tso_ipid_split_en,
1939 ig_vlan_strip_en);
1940}
1941
01f2e4ea
SF		 1942static void enic_reset(struct work_struct *work)
1943{
1944 struct enic *enic = container_of(work, struct enic, reset);
1945
1946 if (!netif_running(enic->netdev))
1947 return;
1948
1949 rtnl_lock();
1950
1951 spin_lock(&enic->devcmd_lock);
1952 vnic_dev_hang_notify(enic->vdev);
1953 spin_unlock(&enic->devcmd_lock);
1954
1955 enic_stop(enic->netdev);
1956 enic_dev_soft_reset(enic);
68f71708 1957 vnic_dev_init(enic->vdev, 0);
01f2e4ea
SF		 1958 enic_reset_mcaddrs(enic);
1959 enic_init_vnic_resources(enic);
68f71708 1960 enic_set_niccfg(enic);
01f2e4ea
SF		 1961 enic_open(enic->netdev);
1962
1963 rtnl_unlock();
1964}
1965
1966static int enic_set_intr_mode(struct enic *enic)
1967{
6ba9cdc0
SF		 1968 unsigned int n = 1;
1969 unsigned int m = 1;
01f2e4ea
SF		 1970 unsigned int i;
1971
1972 /* Set interrupt mode (INTx, MSI, MSI-X) depending
1973 * system capabilities.
1974 *
1975 * Try MSI-X first
1976 *
1977 * We need n RQs, m WQs, n+m CQs, and n+m+2 INTRs
1978 * (the second to last INTR is used for WQ/RQ errors)
1979 * (the last INTR is used for notifications)
1980 */
1981
1982 BUG_ON(ARRAY_SIZE(enic->msix_entry) < n + m + 2);
1983 for (i = 0; i < n + m + 2; i++)
1984 enic->msix_entry[i].entry = i;
1985
1986 if (enic->config.intr_mode < 1 &&
1987 enic->rq_count >= n &&
1988 enic->wq_count >= m &&
1989 enic->cq_count >= n + m &&
1990 enic->intr_count >= n + m + 2 &&
1991 !pci_enable_msix(enic->pdev, enic->msix_entry, n + m + 2)) {
1992
1993 enic->rq_count = n;
1994 enic->wq_count = m;
1995 enic->cq_count = n + m;
1996 enic->intr_count = n + m + 2;
1997
1998 vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_MSIX);
1999
2000 return 0;
2001 }
2002
2003 /* Next try MSI
2004 *
2005 * We need 1 RQ, 1 WQ, 2 CQs, and 1 INTR
2006 */
2007
2008 if (enic->config.intr_mode < 2 &&
2009 enic->rq_count >= 1 &&
2010 enic->wq_count >= 1 &&
2011 enic->cq_count >= 2 &&
2012 enic->intr_count >= 1 &&
2013 !pci_enable_msi(enic->pdev)) {
2014
2015 enic->rq_count = 1;
2016 enic->wq_count = 1;
2017 enic->cq_count = 2;
2018 enic->intr_count = 1;
2019
2020 vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_MSI);
2021
2022 return 0;
2023 }
2024
2025 /* Next try INTx
2026 *
2027 * We need 1 RQ, 1 WQ, 2 CQs, and 3 INTRs
2028 * (the first INTR is used for WQ/RQ)
2029 * (the second INTR is used for WQ/RQ errors)
2030 * (the last INTR is used for notifications)
2031 */
2032
2033 if (enic->config.intr_mode < 3 &&
2034 enic->rq_count >= 1 &&
2035 enic->wq_count >= 1 &&
2036 enic->cq_count >= 2 &&
2037 enic->intr_count >= 3) {
2038
2039 enic->rq_count = 1;
2040 enic->wq_count = 1;
2041 enic->cq_count = 2;
2042 enic->intr_count = 3;
2043
2044 vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_INTX);
2045
2046 return 0;
2047 }
2048
2049 vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN);
2050
2051 return -EINVAL;
2052}
2053
2054static void enic_clear_intr_mode(struct enic *enic)
2055{
2056 switch (vnic_dev_get_intr_mode(enic->vdev)) {
2057 case VNIC_DEV_INTR_MODE_MSIX:
2058 pci_disable_msix(enic->pdev);
2059 break;
2060 case VNIC_DEV_INTR_MODE_MSI:
2061 pci_disable_msi(enic->pdev);
2062 break;
2063 default:
2064 break;
2065 }
2066
2067 vnic_dev_set_intr_mode(enic->vdev, VNIC_DEV_INTR_MODE_UNKNOWN);
2068}
2069
f8bd9091
SF		 2070static const struct net_device_ops enic_netdev_dynamic_ops = {
2071 .ndo_open = enic_open,
2072 .ndo_stop = enic_stop,
2073 .ndo_start_xmit = enic_hard_start_xmit,
2074 .ndo_get_stats = enic_get_stats,
2075 .ndo_validate_addr = eth_validate_addr,
2076 .ndo_set_multicast_list = enic_set_multicast_list,
2077 .ndo_set_mac_address = enic_set_mac_address_dynamic,
2078 .ndo_change_mtu = enic_change_mtu,
2079 .ndo_vlan_rx_register = enic_vlan_rx_register,
2080 .ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid,
2081 .ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid,
2082 .ndo_tx_timeout = enic_tx_timeout,
2083 .ndo_set_vf_port = enic_set_vf_port,
2084 .ndo_get_vf_port = enic_get_vf_port,
2085#ifdef CONFIG_NET_POLL_CONTROLLER
2086 .ndo_poll_controller = enic_poll_controller,
2087#endif
2088};
2089
afe29f7a
SH		 2090static const struct net_device_ops enic_netdev_ops = {
2091 .ndo_open = enic_open,
2092 .ndo_stop = enic_stop,
00829823 2093 .ndo_start_xmit = enic_hard_start_xmit,
afe29f7a
SH		 2094 .ndo_get_stats = enic_get_stats,
2095 .ndo_validate_addr = eth_validate_addr,
2096 .ndo_set_multicast_list = enic_set_multicast_list,
f8bd9091 2097 .ndo_set_mac_address = enic_set_mac_address,
afe29f7a
SH		 2098 .ndo_change_mtu = enic_change_mtu,
2099 .ndo_vlan_rx_register = enic_vlan_rx_register,
2100 .ndo_vlan_rx_add_vid = enic_vlan_rx_add_vid,
2101 .ndo_vlan_rx_kill_vid = enic_vlan_rx_kill_vid,
2102 .ndo_tx_timeout = enic_tx_timeout,
2103#ifdef CONFIG_NET_POLL_CONTROLLER
2104 .ndo_poll_controller = enic_poll_controller,
2105#endif
2106};
2107
6fdfa970
SF		 2108void enic_dev_deinit(struct enic *enic)
2109{
2110 netif_napi_del(&enic->napi);
2111 enic_free_vnic_resources(enic);
2112 enic_clear_intr_mode(enic);
2113}
2114
2115int enic_dev_init(struct enic *enic)
2116{
2117 struct net_device *netdev = enic->netdev;
2118 int err;
2119
2120 /* Get vNIC configuration
2121 */
2122
2123 err = enic_get_vnic_config(enic);
2124 if (err) {
2125 printk(KERN_ERR PFX
2126 "Get vNIC configuration failed, aborting.\n");
2127 return err;
2128 }
2129
2130 /* Get available resource counts
2131 */
2132
2133 enic_get_res_counts(enic);
2134
2135 /* Set interrupt mode based on resource counts and system
2136 * capabilities
2137 */
2138
2139 err = enic_set_intr_mode(enic);
2140 if (err) {
2141 printk(KERN_ERR PFX
d87fd25d
SF		 2142 "Failed to set intr mode based on resource "
2143 "counts and system capabilities, aborting.\n");
6fdfa970
SF		 2144 return err;
2145 }
2146
2147 /* Allocate and configure vNIC resources
2148 */
2149
2150 err = enic_alloc_vnic_resources(enic);
2151 if (err) {
2152 printk(KERN_ERR PFX
2153 "Failed to alloc vNIC resources, aborting.\n");
2154 goto err_out_free_vnic_resources;
2155 }
2156
2157 enic_init_vnic_resources(enic);
2158
2159 err = enic_set_rq_alloc_buf(enic);
2160 if (err) {
2161 printk(KERN_ERR PFX
2162 "Failed to set RQ buffer allocator, aborting.\n");
2163 goto err_out_free_vnic_resources;
2164 }
2165
2166 err = enic_set_niccfg(enic);
2167 if (err) {
2168 printk(KERN_ERR PFX
2169 "Failed to config nic, aborting.\n");
2170 goto err_out_free_vnic_resources;
2171 }
2172
2173 switch (vnic_dev_get_intr_mode(enic->vdev)) {
2174 default:
2175 netif_napi_add(netdev, &enic->napi, enic_poll, 64);
2176 break;
2177 case VNIC_DEV_INTR_MODE_MSIX:
2178 netif_napi_add(netdev, &enic->napi, enic_poll_msix, 64);
2179 break;
2180 }
2181
2182 return 0;
2183
2184err_out_free_vnic_resources:
2185 enic_clear_intr_mode(enic);
2186 enic_free_vnic_resources(enic);
2187
2188 return err;
2189}
2190
27e6c7d3
SF		 2191static void enic_iounmap(struct enic *enic)
2192{
2193 unsigned int i;
2194
2195 for (i = 0; i < ARRAY_SIZE(enic->bar); i++)
2196 if (enic->bar[i].vaddr)
2197 iounmap(enic->bar[i].vaddr);
2198}
2199
01f2e4ea
SF		 2200static int __devinit enic_probe(struct pci_dev *pdev,
2201 const struct pci_device_id *ent)
2202{
2203 struct net_device *netdev;
2204 struct enic *enic;
2205 int using_dac = 0;
2206 unsigned int i;
2207 int err;
2208
01f2e4ea
SF		 2209 /* Allocate net device structure and initialize. Private
2210 * instance data is initialized to zero.
2211 */
2212
2213 netdev = alloc_etherdev(sizeof(struct enic));
2214 if (!netdev) {
2215 printk(KERN_ERR PFX "Etherdev alloc failed, aborting.\n");
2216 return -ENOMEM;
2217 }
2218
01f2e4ea
SF		 2219 pci_set_drvdata(pdev, netdev);
2220
2221 SET_NETDEV_DEV(netdev, &pdev->dev);
2222
2223 enic = netdev_priv(netdev);
2224 enic->netdev = netdev;
2225 enic->pdev = pdev;
2226
2227 /* Setup PCI resources
2228 */
2229
2230 err = pci_enable_device(pdev);
2231 if (err) {
2232 printk(KERN_ERR PFX
4b75a442 2233 "Cannot enable PCI device, aborting.\n");
01f2e4ea
SF		 2234 goto err_out_free_netdev;
2235 }
2236
2237 err = pci_request_regions(pdev, DRV_NAME);
2238 if (err) {
2239 printk(KERN_ERR PFX
4b75a442 2240 "Cannot request PCI regions, aborting.\n");
01f2e4ea
SF		 2241 goto err_out_disable_device;
2242 }
2243
2244 pci_set_master(pdev);
2245
2246 /* Query PCI controller on system for DMA addressing
2247 * limitation for the device. Try 40-bit first, and
2248 * fail to 32-bit.
2249 */
2250
50cf156a 2251 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40));
01f2e4ea 2252 if (err) {
284901a9 2253 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
01f2e4ea
SF		 2254 if (err) {
2255 printk(KERN_ERR PFX
4b75a442 2256 "No usable DMA configuration, aborting.\n");
01f2e4ea
SF		 2257 goto err_out_release_regions;
2258 }
284901a9 2259 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
01f2e4ea
SF		 2260 if (err) {
2261 printk(KERN_ERR PFX
4b75a442
SF		 2262 "Unable to obtain 32-bit DMA "
2263 "for consistent allocations, aborting.\n");
01f2e4ea
SF		 2264 goto err_out_release_regions;
2265 }
2266 } else {
50cf156a 2267 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40));
01f2e4ea
SF		 2268 if (err) {
2269 printk(KERN_ERR PFX
4b75a442
SF		 2270 "Unable to obtain 40-bit DMA "
2271 "for consistent allocations, aborting.\n");
01f2e4ea
SF		 2272 goto err_out_release_regions;
2273 }
2274 using_dac = 1;
2275 }
2276
27e6c7d3 2277 /* Map vNIC resources from BAR0-5
01f2e4ea
SF		 2278 */
2279
27e6c7d3
SF		 2280 for (i = 0; i < ARRAY_SIZE(enic->bar); i++) {
2281 if (!(pci_resource_flags(pdev, i) & IORESOURCE_MEM))
2282 continue;
2283 enic->bar[i].len = pci_resource_len(pdev, i);
2284 enic->bar[i].vaddr = pci_iomap(pdev, i, enic->bar[i].len);
2285 if (!enic->bar[i].vaddr) {
2286 printk(KERN_ERR PFX
2287 "Cannot memory-map BAR %d, aborting.\n", i);
2288 err = -ENODEV;
2289 goto err_out_iounmap;
2290 }
2291 enic->bar[i].bus_addr = pci_resource_start(pdev, i);
01f2e4ea
SF		 2292 }
2293
2294 /* Register vNIC device
2295 */
2296
27e6c7d3
SF		 2297 enic->vdev = vnic_dev_register(NULL, enic, pdev, enic->bar,
2298 ARRAY_SIZE(enic->bar));
01f2e4ea
SF		 2299 if (!enic->vdev) {
2300 printk(KERN_ERR PFX
4b75a442 2301 "vNIC registration failed, aborting.\n");
01f2e4ea
SF		 2302 err = -ENODEV;
2303 goto err_out_iounmap;
2304 }
2305
2306 /* Issue device open to get device in known state
2307 */
2308
2309 err = enic_dev_open(enic);
2310 if (err) {
2311 printk(KERN_ERR PFX
4b75a442 2312 "vNIC dev open failed, aborting.\n");
01f2e4ea
SF		 2313 goto err_out_vnic_unregister;
2314 }
2315
2316 /* Issue device init to initialize the vnic-to-switch link.
2317 * We'll start with carrier off and wait for link UP
2318 * notification later to turn on carrier. We don't need
2319 * to wait here for the vnic-to-switch link initialization
2320 * to complete; link UP notification is the indication that
2321 * the process is complete.
2322 */
2323
2324 netif_carrier_off(netdev);
2325
f8bd9091
SF		 2326 if (!enic_is_dynamic(enic)) {
2327 err = vnic_dev_init(enic->vdev, 0);
2328 if (err) {
2329 printk(KERN_ERR PFX
2330 "vNIC dev init failed, aborting.\n");
2331 goto err_out_dev_close;
2332 }
01f2e4ea
SF		 2333 }
2334
6fdfa970 2335 err = enic_dev_init(enic);
01f2e4ea
SF		 2336 if (err) {
2337 printk(KERN_ERR PFX
6fdfa970 2338 "Device initialization failed, aborting.\n");
01f2e4ea
SF		 2339 goto err_out_dev_close;
2340 }
2341
01f2e4ea
SF		 2342 /* Setup notification timer, HW reset task, and locks
2343 */
2344
2345 init_timer(&enic->notify_timer);
2346 enic->notify_timer.function = enic_notify_timer;
2347 enic->notify_timer.data = (unsigned long)enic;
2348
2349 INIT_WORK(&enic->reset, enic_reset);
2350
2351 for (i = 0; i < enic->wq_count; i++)
2352 spin_lock_init(&enic->wq_lock[i]);
2353
2354 spin_lock_init(&enic->devcmd_lock);
2355
2356 /* Register net device
2357 */
2358
2359 enic->port_mtu = enic->config.mtu;
2360 (void)enic_change_mtu(netdev, enic->port_mtu);
2361
2362 err = enic_set_mac_addr(netdev, enic->mac_addr);
2363 if (err) {
2364 printk(KERN_ERR PFX
4b75a442 2365 "Invalid MAC address, aborting.\n");
6fdfa970 2366 goto err_out_dev_deinit;
01f2e4ea
SF		 2367 }
2368
7c844599
SF		 2369 enic->tx_coalesce_usecs = enic->config.intr_timer_usec;
2370 enic->rx_coalesce_usecs = enic->tx_coalesce_usecs;
2371
f8bd9091
SF		 2372 if (enic_is_dynamic(enic))
2373 netdev->netdev_ops = &enic_netdev_dynamic_ops;
2374 else
2375 netdev->netdev_ops = &enic_netdev_ops;
2376
01f2e4ea
SF		 2377 netdev->watchdog_timeo = 2 * HZ;
2378 netdev->ethtool_ops = &enic_ethtool_ops;
01f2e4ea 2379
73c1ea9b 2380 netdev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
01f2e4ea
SF		 2381 if (ENIC_SETTING(enic, TXCSUM))
2382 netdev->features |= NETIF_F_SG | NETIF_F_HW_CSUM;
2383 if (ENIC_SETTING(enic, TSO))
2384 netdev->features |= NETIF_F_TSO |
2385 NETIF_F_TSO6 | NETIF_F_TSO_ECN;
86ca9db7
SF		 2386 if (ENIC_SETTING(enic, LRO))
2387 netdev->features |= NETIF_F_LRO;
01f2e4ea
SF		 2388 if (using_dac)
2389 netdev->features |= NETIF_F_HIGHDMA;
2390
01f2e4ea
SF		 2391 enic->csum_rx_enabled = ENIC_SETTING(enic, RXCSUM);
2392
86ca9db7
SF		 2393 enic->lro_mgr.max_aggr = ENIC_LRO_MAX_AGGR;
2394 enic->lro_mgr.max_desc = ENIC_LRO_MAX_DESC;
2395 enic->lro_mgr.lro_arr = enic->lro_desc;
2396 enic->lro_mgr.get_skb_header = enic_get_skb_header;
2397 enic->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
2398 enic->lro_mgr.dev = netdev;
2399 enic->lro_mgr.ip_summed = CHECKSUM_COMPLETE;
2400 enic->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
2401
01f2e4ea
SF		 2402 err = register_netdev(netdev);
2403 if (err) {
2404 printk(KERN_ERR PFX
4b75a442 2405 "Cannot register net device, aborting.\n");
6fdfa970 2406 goto err_out_dev_deinit;
01f2e4ea
SF		 2407 }
2408
2409 return 0;
2410
6fdfa970
SF		 2411err_out_dev_deinit:
2412 enic_dev_deinit(enic);
01f2e4ea
SF		 2413err_out_dev_close:
2414 vnic_dev_close(enic->vdev);
2415err_out_vnic_unregister:
01f2e4ea
SF		 2416 vnic_dev_unregister(enic->vdev);
2417err_out_iounmap:
2418 enic_iounmap(enic);
2419err_out_release_regions:
2420 pci_release_regions(pdev);
2421err_out_disable_device:
2422 pci_disable_device(pdev);
2423err_out_free_netdev:
2424 pci_set_drvdata(pdev, NULL);
2425 free_netdev(netdev);
2426
2427 return err;
2428}
2429
2430static void __devexit enic_remove(struct pci_dev *pdev)
2431{
2432 struct net_device *netdev = pci_get_drvdata(pdev);
2433
2434 if (netdev) {
2435 struct enic *enic = netdev_priv(netdev);
2436
2437 flush_scheduled_work();
2438 unregister_netdev(netdev);
6fdfa970 2439 enic_dev_deinit(enic);
01f2e4ea 2440 vnic_dev_close(enic->vdev);
01f2e4ea
SF		 2441 vnic_dev_unregister(enic->vdev);
2442 enic_iounmap(enic);
2443 pci_release_regions(pdev);
2444 pci_disable_device(pdev);
2445 pci_set_drvdata(pdev, NULL);
2446 free_netdev(netdev);
2447 }
2448}
2449
2450static struct pci_driver enic_driver = {
2451 .name = DRV_NAME,
2452 .id_table = enic_id_table,
2453 .probe = enic_probe,
2454 .remove = __devexit_p(enic_remove),
2455};
2456
2457static int __init enic_init_module(void)
2458{
2459 printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION);
2460
2461 return pci_register_driver(&enic_driver);
2462}
2463
2464static void __exit enic_cleanup_module(void)
2465{
2466 pci_unregister_driver(&enic_driver);
2467}
2468
2469module_init(enic_init_module);
2470module_exit(enic_cleanup_module);
Clone of davem's net-next-2.6 tree