1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42#include <linux/module.h>
43#include <linux/inetdevice.h>
44#include <linux/init.h>
45#include <linux/slab.h>
46#include <linux/errno.h>
47#include <linux/pci.h>
48#include <linux/netdevice.h>
49
50#include <rdma/ib_user_verbs.h>
51#include <rdma/ib_addr.h>
52
53#include "usnic_abi.h"
54#include "usnic_common_util.h"
55#include "usnic_ib.h"
56#include "usnic_ib_qp_grp.h"
57#include "usnic_log.h"
58#include "usnic_fwd.h"
59#include "usnic_debugfs.h"
60#include "usnic_ib_verbs.h"
61#include "usnic_transport.h"
62#include "usnic_uiom.h"
63#include "usnic_ib_sysfs.h"
64
65unsigned int usnic_log_lvl = USNIC_LOG_LVL_ERR;
66unsigned int usnic_ib_share_vf = 1;
67
68static const char usnic_version[] =
69 DRV_NAME ": Cisco VIC (USNIC) Verbs Driver v"
70 DRV_VERSION " (" DRV_RELDATE ")\n";
71
72static DEFINE_MUTEX(usnic_ib_ibdev_list_lock);
73static LIST_HEAD(usnic_ib_ibdev_list);
74
75
76static int usnic_ib_dump_vf_hdr(void *obj, char *buf, int buf_sz)
77{
78 struct usnic_ib_vf *vf = obj;
79 return scnprintf(buf, buf_sz, "PF: %s ", vf->pf->ib_dev.name);
80}
81
82
83static void usnic_ib_dump_vf(struct usnic_ib_vf *vf, char *buf, int buf_sz)
84{
85 usnic_vnic_dump(vf->vnic, buf, buf_sz, vf,
86 usnic_ib_dump_vf_hdr,
87 usnic_ib_qp_grp_dump_hdr, usnic_ib_qp_grp_dump_rows);
88}
89
90void usnic_ib_log_vf(struct usnic_ib_vf *vf)
91{
92 char buf[1000];
93 usnic_ib_dump_vf(vf, buf, sizeof(buf));
94 usnic_dbg("%s\n", buf);
95}
96
97
98static void usnic_ib_qp_grp_modify_active_to_err(struct usnic_ib_dev *us_ibdev)
99{
100 struct usnic_ib_ucontext *ctx;
101 struct usnic_ib_qp_grp *qp_grp;
102 enum ib_qp_state cur_state;
103 int status;
104
105 BUG_ON(!mutex_is_locked(&us_ibdev->usdev_lock));
106
107 list_for_each_entry(ctx, &us_ibdev->ctx_list, link) {
108 list_for_each_entry(qp_grp, &ctx->qp_grp_list, link) {
109 cur_state = qp_grp->state;
110 if (cur_state == IB_QPS_INIT ||
111 cur_state == IB_QPS_RTR ||
112 cur_state == IB_QPS_RTS) {
113 status = usnic_ib_qp_grp_modify(qp_grp,
114 IB_QPS_ERR,
115 NULL);
116 if (status) {
117 usnic_err("Failed to transistion qp grp %u from %s to %s\n",
118 qp_grp->grp_id,
119 usnic_ib_qp_grp_state_to_string
120 (cur_state),
121 usnic_ib_qp_grp_state_to_string
122 (IB_QPS_ERR));
123 }
124 }
125 }
126 }
127}
128
129static void usnic_ib_handle_usdev_event(struct usnic_ib_dev *us_ibdev,
130 unsigned long event)
131{
132 struct net_device *netdev;
133 struct ib_event ib_event;
134
135 memset(&ib_event, 0, sizeof(ib_event));
136
137 mutex_lock(&us_ibdev->usdev_lock);
138 netdev = us_ibdev->netdev;
139 switch (event) {
140 case NETDEV_REBOOT:
141 usnic_info("PF Reset on %s\n", us_ibdev->ib_dev.name);
142 usnic_ib_qp_grp_modify_active_to_err(us_ibdev);
143 ib_event.event = IB_EVENT_PORT_ERR;
144 ib_event.device = &us_ibdev->ib_dev;
145 ib_event.element.port_num = 1;
146 ib_dispatch_event(&ib_event);
147 break;
148 case NETDEV_UP:
149 case NETDEV_DOWN:
150 case NETDEV_CHANGE:
151 if (!us_ibdev->ufdev->link_up &&
152 netif_carrier_ok(netdev)) {
153 usnic_fwd_carrier_up(us_ibdev->ufdev);
154 usnic_info("Link UP on %s\n", us_ibdev->ib_dev.name);
155 ib_event.event = IB_EVENT_PORT_ACTIVE;
156 ib_event.device = &us_ibdev->ib_dev;
157 ib_event.element.port_num = 1;
158 ib_dispatch_event(&ib_event);
159 } else if (us_ibdev->ufdev->link_up &&
160 !netif_carrier_ok(netdev)) {
161 usnic_fwd_carrier_down(us_ibdev->ufdev);
162 usnic_info("Link DOWN on %s\n", us_ibdev->ib_dev.name);
163 usnic_ib_qp_grp_modify_active_to_err(us_ibdev);
164 ib_event.event = IB_EVENT_PORT_ERR;
165 ib_event.device = &us_ibdev->ib_dev;
166 ib_event.element.port_num = 1;
167 ib_dispatch_event(&ib_event);
168 } else {
169 usnic_dbg("Ignoring %s on %s\n",
170 netdev_cmd_to_name(event),
171 us_ibdev->ib_dev.name);
172 }
173 break;
174 case NETDEV_CHANGEADDR:
175 if (!memcmp(us_ibdev->ufdev->mac, netdev->dev_addr,
176 sizeof(us_ibdev->ufdev->mac))) {
177 usnic_dbg("Ignoring addr change on %s\n",
178 us_ibdev->ib_dev.name);
179 } else {
180 usnic_info(" %s old mac: %pM new mac: %pM\n",
181 us_ibdev->ib_dev.name,
182 us_ibdev->ufdev->mac,
183 netdev->dev_addr);
184 usnic_fwd_set_mac(us_ibdev->ufdev, netdev->dev_addr);
185 usnic_ib_qp_grp_modify_active_to_err(us_ibdev);
186 ib_event.event = IB_EVENT_GID_CHANGE;
187 ib_event.device = &us_ibdev->ib_dev;
188 ib_event.element.port_num = 1;
189 ib_dispatch_event(&ib_event);
190 }
191
192 break;
193 case NETDEV_CHANGEMTU:
194 if (us_ibdev->ufdev->mtu != netdev->mtu) {
195 usnic_info("MTU Change on %s old: %u new: %u\n",
196 us_ibdev->ib_dev.name,
197 us_ibdev->ufdev->mtu, netdev->mtu);
198 usnic_fwd_set_mtu(us_ibdev->ufdev, netdev->mtu);
199 usnic_ib_qp_grp_modify_active_to_err(us_ibdev);
200 } else {
201 usnic_dbg("Ignoring MTU change on %s\n",
202 us_ibdev->ib_dev.name);
203 }
204 break;
205 default:
206 usnic_dbg("Ignoring event %s on %s",
207 netdev_cmd_to_name(event),
208 us_ibdev->ib_dev.name);
209 }
210 mutex_unlock(&us_ibdev->usdev_lock);
211}
212
213static int usnic_ib_netdevice_event(struct notifier_block *notifier,
214 unsigned long event, void *ptr)
215{
216 struct usnic_ib_dev *us_ibdev;
217
218 struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
219
220 mutex_lock(&usnic_ib_ibdev_list_lock);
221 list_for_each_entry(us_ibdev, &usnic_ib_ibdev_list, ib_dev_link) {
222 if (us_ibdev->netdev == netdev) {
223 usnic_ib_handle_usdev_event(us_ibdev, event);
224 break;
225 }
226 }
227 mutex_unlock(&usnic_ib_ibdev_list_lock);
228
229 return NOTIFY_DONE;
230}
231
232static struct notifier_block usnic_ib_netdevice_notifier = {
233 .notifier_call = usnic_ib_netdevice_event
234};
235
236
237
238static int usnic_ib_handle_inet_event(struct usnic_ib_dev *us_ibdev,
239 unsigned long event, void *ptr)
240{
241 struct in_ifaddr *ifa = ptr;
242 struct ib_event ib_event;
243
244 mutex_lock(&us_ibdev->usdev_lock);
245
246 switch (event) {
247 case NETDEV_DOWN:
248 usnic_info("%s via ip notifiers",
249 netdev_cmd_to_name(event));
250 usnic_fwd_del_ipaddr(us_ibdev->ufdev);
251 usnic_ib_qp_grp_modify_active_to_err(us_ibdev);
252 ib_event.event = IB_EVENT_GID_CHANGE;
253 ib_event.device = &us_ibdev->ib_dev;
254 ib_event.element.port_num = 1;
255 ib_dispatch_event(&ib_event);
256 break;
257 case NETDEV_UP:
258 usnic_fwd_add_ipaddr(us_ibdev->ufdev, ifa->ifa_address);
259 usnic_info("%s via ip notifiers: ip %pI4",
260 netdev_cmd_to_name(event),
261 &us_ibdev->ufdev->inaddr);
262 ib_event.event = IB_EVENT_GID_CHANGE;
263 ib_event.device = &us_ibdev->ib_dev;
264 ib_event.element.port_num = 1;
265 ib_dispatch_event(&ib_event);
266 break;
267 default:
268 usnic_info("Ignoring event %s on %s",
269 netdev_cmd_to_name(event),
270 us_ibdev->ib_dev.name);
271 }
272 mutex_unlock(&us_ibdev->usdev_lock);
273
274 return NOTIFY_DONE;
275}
276
277static int usnic_ib_inetaddr_event(struct notifier_block *notifier,
278 unsigned long event, void *ptr)
279{
280 struct usnic_ib_dev *us_ibdev;
281 struct in_ifaddr *ifa = ptr;
282 struct net_device *netdev = ifa->ifa_dev->dev;
283
284 mutex_lock(&usnic_ib_ibdev_list_lock);
285 list_for_each_entry(us_ibdev, &usnic_ib_ibdev_list, ib_dev_link) {
286 if (us_ibdev->netdev == netdev) {
287 usnic_ib_handle_inet_event(us_ibdev, event, ptr);
288 break;
289 }
290 }
291 mutex_unlock(&usnic_ib_ibdev_list_lock);
292
293 return NOTIFY_DONE;
294}
295static struct notifier_block usnic_ib_inetaddr_notifier = {
296 .notifier_call = usnic_ib_inetaddr_event
297};
298
299
300static int usnic_port_immutable(struct ib_device *ibdev, u8 port_num,
301 struct ib_port_immutable *immutable)
302{
303 struct ib_port_attr attr;
304 int err;
305
306 immutable->core_cap_flags = RDMA_CORE_PORT_USNIC;
307
308 err = ib_query_port(ibdev, port_num, &attr);
309 if (err)
310 return err;
311
312 immutable->pkey_tbl_len = attr.pkey_tbl_len;
313 immutable->gid_tbl_len = attr.gid_tbl_len;
314
315 return 0;
316}
317
318static void usnic_get_dev_fw_str(struct ib_device *device, char *str)
319{
320 struct usnic_ib_dev *us_ibdev =
321 container_of(device, struct usnic_ib_dev, ib_dev);
322 struct ethtool_drvinfo info;
323
324 mutex_lock(&us_ibdev->usdev_lock);
325 us_ibdev->netdev->ethtool_ops->get_drvinfo(us_ibdev->netdev, &info);
326 mutex_unlock(&us_ibdev->usdev_lock);
327
328 snprintf(str, IB_FW_VERSION_NAME_MAX, "%s", info.fw_version);
329}
330
331
332static void *usnic_ib_device_add(struct pci_dev *dev)
333{
334 struct usnic_ib_dev *us_ibdev;
335 union ib_gid gid;
336 struct in_device *ind;
337 struct net_device *netdev;
338
339 usnic_dbg("\n");
340 netdev = pci_get_drvdata(dev);
341
342 us_ibdev = (struct usnic_ib_dev *)ib_alloc_device(sizeof(*us_ibdev));
343 if (!us_ibdev) {
344 usnic_err("Device %s context alloc failed\n",
345 netdev_name(pci_get_drvdata(dev)));
346 return ERR_PTR(-EFAULT);
347 }
348
349 us_ibdev->ufdev = usnic_fwd_dev_alloc(dev);
350 if (!us_ibdev->ufdev) {
351 usnic_err("Failed to alloc ufdev for %s\n", pci_name(dev));
352 goto err_dealloc;
353 }
354
355 mutex_init(&us_ibdev->usdev_lock);
356 INIT_LIST_HEAD(&us_ibdev->vf_dev_list);
357 INIT_LIST_HEAD(&us_ibdev->ctx_list);
358
359 us_ibdev->pdev = dev;
360 us_ibdev->netdev = pci_get_drvdata(dev);
361 us_ibdev->ib_dev.owner = THIS_MODULE;
362 us_ibdev->ib_dev.node_type = RDMA_NODE_USNIC_UDP;
363 us_ibdev->ib_dev.phys_port_cnt = USNIC_IB_PORT_CNT;
364 us_ibdev->ib_dev.num_comp_vectors = USNIC_IB_NUM_COMP_VECTORS;
365 us_ibdev->ib_dev.dev.parent = &dev->dev;
366 us_ibdev->ib_dev.uverbs_abi_ver = USNIC_UVERBS_ABI_VERSION;
367 strlcpy(us_ibdev->ib_dev.name, "usnic_%d", IB_DEVICE_NAME_MAX);
368
369 us_ibdev->ib_dev.uverbs_cmd_mask =
370 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
371 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
372 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
373 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
374 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
375 (1ull << IB_USER_VERBS_CMD_REG_MR) |
376 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
377 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
378 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
379 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
380 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
381 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
382 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
383 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
384 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
385 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
386 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
387
388 us_ibdev->ib_dev.query_device = usnic_ib_query_device;
389 us_ibdev->ib_dev.query_port = usnic_ib_query_port;
390 us_ibdev->ib_dev.query_pkey = usnic_ib_query_pkey;
391 us_ibdev->ib_dev.query_gid = usnic_ib_query_gid;
392 us_ibdev->ib_dev.get_netdev = usnic_get_netdev;
393 us_ibdev->ib_dev.get_link_layer = usnic_ib_port_link_layer;
394 us_ibdev->ib_dev.alloc_pd = usnic_ib_alloc_pd;
395 us_ibdev->ib_dev.dealloc_pd = usnic_ib_dealloc_pd;
396 us_ibdev->ib_dev.create_qp = usnic_ib_create_qp;
397 us_ibdev->ib_dev.modify_qp = usnic_ib_modify_qp;
398 us_ibdev->ib_dev.query_qp = usnic_ib_query_qp;
399 us_ibdev->ib_dev.destroy_qp = usnic_ib_destroy_qp;
400 us_ibdev->ib_dev.create_cq = usnic_ib_create_cq;
401 us_ibdev->ib_dev.destroy_cq = usnic_ib_destroy_cq;
402 us_ibdev->ib_dev.reg_user_mr = usnic_ib_reg_mr;
403 us_ibdev->ib_dev.dereg_mr = usnic_ib_dereg_mr;
404 us_ibdev->ib_dev.alloc_ucontext = usnic_ib_alloc_ucontext;
405 us_ibdev->ib_dev.dealloc_ucontext = usnic_ib_dealloc_ucontext;
406 us_ibdev->ib_dev.mmap = usnic_ib_mmap;
407 us_ibdev->ib_dev.create_ah = usnic_ib_create_ah;
408 us_ibdev->ib_dev.destroy_ah = usnic_ib_destroy_ah;
409 us_ibdev->ib_dev.post_send = usnic_ib_post_send;
410 us_ibdev->ib_dev.post_recv = usnic_ib_post_recv;
411 us_ibdev->ib_dev.poll_cq = usnic_ib_poll_cq;
412 us_ibdev->ib_dev.req_notify_cq = usnic_ib_req_notify_cq;
413 us_ibdev->ib_dev.get_dma_mr = usnic_ib_get_dma_mr;
414 us_ibdev->ib_dev.get_port_immutable = usnic_port_immutable;
415 us_ibdev->ib_dev.get_dev_fw_str = usnic_get_dev_fw_str;
416
417
418 us_ibdev->ib_dev.driver_id = RDMA_DRIVER_USNIC;
419 if (ib_register_device(&us_ibdev->ib_dev, NULL))
420 goto err_fwd_dealloc;
421
422 usnic_fwd_set_mtu(us_ibdev->ufdev, us_ibdev->netdev->mtu);
423 usnic_fwd_set_mac(us_ibdev->ufdev, us_ibdev->netdev->dev_addr);
424 if (netif_carrier_ok(us_ibdev->netdev))
425 usnic_fwd_carrier_up(us_ibdev->ufdev);
426
427 ind = in_dev_get(netdev);
428 if (ind->ifa_list)
429 usnic_fwd_add_ipaddr(us_ibdev->ufdev,
430 ind->ifa_list->ifa_address);
431 in_dev_put(ind);
432
433 usnic_mac_ip_to_gid(us_ibdev->netdev->perm_addr,
434 us_ibdev->ufdev->inaddr, &gid.raw[0]);
435 memcpy(&us_ibdev->ib_dev.node_guid, &gid.global.interface_id,
436 sizeof(gid.global.interface_id));
437 kref_init(&us_ibdev->vf_cnt);
438
439 usnic_info("Added ibdev: %s netdev: %s with mac %pM Link: %u MTU: %u\n",
440 us_ibdev->ib_dev.name, netdev_name(us_ibdev->netdev),
441 us_ibdev->ufdev->mac, us_ibdev->ufdev->link_up,
442 us_ibdev->ufdev->mtu);
443 return us_ibdev;
444
445err_fwd_dealloc:
446 usnic_fwd_dev_free(us_ibdev->ufdev);
447err_dealloc:
448 usnic_err("failed -- deallocing device\n");
449 ib_dealloc_device(&us_ibdev->ib_dev);
450 return NULL;
451}
452
453static void usnic_ib_device_remove(struct usnic_ib_dev *us_ibdev)
454{
455 usnic_info("Unregistering %s\n", us_ibdev->ib_dev.name);
456 usnic_ib_sysfs_unregister_usdev(us_ibdev);
457 usnic_fwd_dev_free(us_ibdev->ufdev);
458 ib_unregister_device(&us_ibdev->ib_dev);
459 ib_dealloc_device(&us_ibdev->ib_dev);
460}
461
462static void usnic_ib_undiscover_pf(struct kref *kref)
463{
464 struct usnic_ib_dev *us_ibdev, *tmp;
465 struct pci_dev *dev;
466 bool found = false;
467
468 dev = container_of(kref, struct usnic_ib_dev, vf_cnt)->pdev;
469 mutex_lock(&usnic_ib_ibdev_list_lock);
470 list_for_each_entry_safe(us_ibdev, tmp,
471 &usnic_ib_ibdev_list, ib_dev_link) {
472 if (us_ibdev->pdev == dev) {
473 list_del(&us_ibdev->ib_dev_link);
474 usnic_ib_device_remove(us_ibdev);
475 found = true;
476 break;
477 }
478 }
479
480 WARN(!found, "Failed to remove PF %s\n", pci_name(dev));
481
482 mutex_unlock(&usnic_ib_ibdev_list_lock);
483}
484
485static struct usnic_ib_dev *usnic_ib_discover_pf(struct usnic_vnic *vnic)
486{
487 struct usnic_ib_dev *us_ibdev;
488 struct pci_dev *parent_pci, *vf_pci;
489 int err;
490
491 vf_pci = usnic_vnic_get_pdev(vnic);
492 parent_pci = pci_physfn(vf_pci);
493
494 BUG_ON(!parent_pci);
495
496 mutex_lock(&usnic_ib_ibdev_list_lock);
497 list_for_each_entry(us_ibdev, &usnic_ib_ibdev_list, ib_dev_link) {
498 if (us_ibdev->pdev == parent_pci) {
499 kref_get(&us_ibdev->vf_cnt);
500 goto out;
501 }
502 }
503
504 us_ibdev = usnic_ib_device_add(parent_pci);
505 if (IS_ERR_OR_NULL(us_ibdev)) {
506 us_ibdev = us_ibdev ? us_ibdev : ERR_PTR(-EFAULT);
507 goto out;
508 }
509
510 err = usnic_ib_sysfs_register_usdev(us_ibdev);
511 if (err) {
512 usnic_ib_device_remove(us_ibdev);
513 us_ibdev = ERR_PTR(err);
514 goto out;
515 }
516
517 list_add(&us_ibdev->ib_dev_link, &usnic_ib_ibdev_list);
518out:
519 mutex_unlock(&usnic_ib_ibdev_list_lock);
520 return us_ibdev;
521}
522
523
524
525
526static const struct pci_device_id usnic_ib_pci_ids[] = {
527 {PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_VIC_USPACE_NIC)},
528 {0,}
529};
530
531static int usnic_ib_pci_probe(struct pci_dev *pdev,
532 const struct pci_device_id *id)
533{
534 int err;
535 struct usnic_ib_dev *pf;
536 struct usnic_ib_vf *vf;
537 enum usnic_vnic_res_type res_type;
538
539 vf = kzalloc(sizeof(*vf), GFP_KERNEL);
540 if (!vf)
541 return -ENOMEM;
542
543 err = pci_enable_device(pdev);
544 if (err) {
545 usnic_err("Failed to enable %s with err %d\n",
546 pci_name(pdev), err);
547 goto out_clean_vf;
548 }
549
550 err = pci_request_regions(pdev, DRV_NAME);
551 if (err) {
552 usnic_err("Failed to request region for %s with err %d\n",
553 pci_name(pdev), err);
554 goto out_disable_device;
555 }
556
557 pci_set_master(pdev);
558 pci_set_drvdata(pdev, vf);
559
560 vf->vnic = usnic_vnic_alloc(pdev);
561 if (IS_ERR_OR_NULL(vf->vnic)) {
562 err = vf->vnic ? PTR_ERR(vf->vnic) : -ENOMEM;
563 usnic_err("Failed to alloc vnic for %s with err %d\n",
564 pci_name(pdev), err);
565 goto out_release_regions;
566 }
567
568 pf = usnic_ib_discover_pf(vf->vnic);
569 if (IS_ERR_OR_NULL(pf)) {
570 usnic_err("Failed to discover pf of vnic %s with err%ld\n",
571 pci_name(pdev), PTR_ERR(pf));
572 err = pf ? PTR_ERR(pf) : -EFAULT;
573 goto out_clean_vnic;
574 }
575
576 vf->pf = pf;
577 spin_lock_init(&vf->lock);
578 mutex_lock(&pf->usdev_lock);
579 list_add_tail(&vf->link, &pf->vf_dev_list);
580
581
582
583
584 for (res_type = USNIC_VNIC_RES_TYPE_EOL+1;
585 res_type < USNIC_VNIC_RES_TYPE_MAX;
586 res_type++) {
587 pf->vf_res_cnt[res_type] = usnic_vnic_res_cnt(vf->vnic,
588 res_type);
589 }
590
591 mutex_unlock(&pf->usdev_lock);
592
593 usnic_info("Registering usnic VF %s into PF %s\n", pci_name(pdev),
594 pf->ib_dev.name);
595 usnic_ib_log_vf(vf);
596 return 0;
597
598out_clean_vnic:
599 usnic_vnic_free(vf->vnic);
600out_release_regions:
601 pci_set_drvdata(pdev, NULL);
602 pci_clear_master(pdev);
603 pci_release_regions(pdev);
604out_disable_device:
605 pci_disable_device(pdev);
606out_clean_vf:
607 kfree(vf);
608 return err;
609}
610
611static void usnic_ib_pci_remove(struct pci_dev *pdev)
612{
613 struct usnic_ib_vf *vf = pci_get_drvdata(pdev);
614 struct usnic_ib_dev *pf = vf->pf;
615
616 mutex_lock(&pf->usdev_lock);
617 list_del(&vf->link);
618 mutex_unlock(&pf->usdev_lock);
619
620 kref_put(&pf->vf_cnt, usnic_ib_undiscover_pf);
621 usnic_vnic_free(vf->vnic);
622 pci_set_drvdata(pdev, NULL);
623 pci_clear_master(pdev);
624 pci_release_regions(pdev);
625 pci_disable_device(pdev);
626 kfree(vf);
627
628 usnic_info("Removed VF %s\n", pci_name(pdev));
629}
630
631
632static struct pci_driver usnic_ib_pci_driver = {
633 .name = DRV_NAME,
634 .id_table = usnic_ib_pci_ids,
635 .probe = usnic_ib_pci_probe,
636 .remove = usnic_ib_pci_remove,
637};
638
639
640
641static int __init usnic_ib_init(void)
642{
643 int err;
644
645 printk_once(KERN_INFO "%s", usnic_version);
646
647 err = usnic_uiom_init(DRV_NAME);
648 if (err) {
649 usnic_err("Unable to initalize umem with err %d\n", err);
650 return err;
651 }
652
653 err = pci_register_driver(&usnic_ib_pci_driver);
654 if (err) {
655 usnic_err("Unable to register with PCI\n");
656 goto out_umem_fini;
657 }
658
659 err = register_netdevice_notifier(&usnic_ib_netdevice_notifier);
660 if (err) {
661 usnic_err("Failed to register netdev notifier\n");
662 goto out_pci_unreg;
663 }
664
665 err = register_inetaddr_notifier(&usnic_ib_inetaddr_notifier);
666 if (err) {
667 usnic_err("Failed to register inet addr notifier\n");
668 goto out_unreg_netdev_notifier;
669 }
670
671 err = usnic_transport_init();
672 if (err) {
673 usnic_err("Failed to initialize transport\n");
674 goto out_unreg_inetaddr_notifier;
675 }
676
677 usnic_debugfs_init();
678
679 return 0;
680
681out_unreg_inetaddr_notifier:
682 unregister_inetaddr_notifier(&usnic_ib_inetaddr_notifier);
683out_unreg_netdev_notifier:
684 unregister_netdevice_notifier(&usnic_ib_netdevice_notifier);
685out_pci_unreg:
686 pci_unregister_driver(&usnic_ib_pci_driver);
687out_umem_fini:
688 usnic_uiom_fini();
689
690 return err;
691}
692
693static void __exit usnic_ib_destroy(void)
694{
695 usnic_dbg("\n");
696 usnic_debugfs_exit();
697 usnic_transport_fini();
698 unregister_inetaddr_notifier(&usnic_ib_inetaddr_notifier);
699 unregister_netdevice_notifier(&usnic_ib_netdevice_notifier);
700 pci_unregister_driver(&usnic_ib_pci_driver);
701 usnic_uiom_fini();
702}
703
704MODULE_DESCRIPTION("Cisco VIC (usNIC) Verbs Driver");
705MODULE_AUTHOR("Upinder Malhi <umalhi@cisco.com>");
706MODULE_LICENSE("Dual BSD/GPL");
707module_param(usnic_log_lvl, uint, S_IRUGO | S_IWUSR);
708module_param(usnic_ib_share_vf, uint, S_IRUGO | S_IWUSR);
709MODULE_PARM_DESC(usnic_log_lvl, " Off=0, Err=1, Info=2, Debug=3");
710MODULE_PARM_DESC(usnic_ib_share_vf, "Off=0, On=1 VF sharing amongst QPs");
711MODULE_DEVICE_TABLE(pci, usnic_ib_pci_ids);
712
713module_init(usnic_ib_init);
714module_exit(usnic_ib_destroy);
715
716
