This source file includes following definitions.
- usnic_ib_dump_vf_hdr
- usnic_ib_dump_vf
- usnic_ib_log_vf
- usnic_ib_qp_grp_modify_active_to_err
- usnic_ib_handle_usdev_event
- usnic_ib_netdevice_event
- usnic_ib_handle_inet_event
- usnic_ib_inetaddr_event
- usnic_port_immutable
- usnic_get_dev_fw_str
- usnic_ib_device_add
- usnic_ib_device_remove
- usnic_ib_undiscover_pf
- usnic_ib_discover_pf
- usnic_ib_pci_probe
- usnic_ib_pci_remove
- usnic_ib_init
- usnic_ib_destroy
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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
65 unsigned int usnic_log_lvl = USNIC_LOG_LVL_ERR;
66 unsigned int usnic_ib_share_vf = 1;
67
68 static const char usnic_version[] =
69 DRV_NAME ": Cisco VIC (USNIC) Verbs Driver v"
70 DRV_VERSION " (" DRV_RELDATE ")\n";
71
72 static DEFINE_MUTEX(usnic_ib_ibdev_list_lock);
73 static LIST_HEAD(usnic_ib_ibdev_list);
74
75
76 static 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 ", dev_name(&vf->pf->ib_dev.dev));
80 }
81
82
83 static 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
90 void usnic_ib_log_vf(struct usnic_ib_vf *vf)
91 {
92 char *buf = kzalloc(1000, GFP_KERNEL);
93
94 if (!buf)
95 return;
96
97 usnic_ib_dump_vf(vf, buf, 1000);
98 usnic_dbg("%s\n", buf);
99
100 kfree(buf);
101 }
102
103
104 static void usnic_ib_qp_grp_modify_active_to_err(struct usnic_ib_dev *us_ibdev)
105 {
106 struct usnic_ib_ucontext *ctx;
107 struct usnic_ib_qp_grp *qp_grp;
108 enum ib_qp_state cur_state;
109 int status;
110
111 BUG_ON(!mutex_is_locked(&us_ibdev->usdev_lock));
112
113 list_for_each_entry(ctx, &us_ibdev->ctx_list, link) {
114 list_for_each_entry(qp_grp, &ctx->qp_grp_list, link) {
115 cur_state = qp_grp->state;
116 if (cur_state == IB_QPS_INIT ||
117 cur_state == IB_QPS_RTR ||
118 cur_state == IB_QPS_RTS) {
119 status = usnic_ib_qp_grp_modify(qp_grp,
120 IB_QPS_ERR,
121 NULL);
122 if (status) {
123 usnic_err("Failed to transistion qp grp %u from %s to %s\n",
124 qp_grp->grp_id,
125 usnic_ib_qp_grp_state_to_string
126 (cur_state),
127 usnic_ib_qp_grp_state_to_string
128 (IB_QPS_ERR));
129 }
130 }
131 }
132 }
133 }
134
135 static void usnic_ib_handle_usdev_event(struct usnic_ib_dev *us_ibdev,
136 unsigned long event)
137 {
138 struct net_device *netdev;
139 struct ib_event ib_event;
140
141 memset(&ib_event, 0, sizeof(ib_event));
142
143 mutex_lock(&us_ibdev->usdev_lock);
144 netdev = us_ibdev->netdev;
145 switch (event) {
146 case NETDEV_REBOOT:
147 usnic_info("PF Reset on %s\n", dev_name(&us_ibdev->ib_dev.dev));
148 usnic_ib_qp_grp_modify_active_to_err(us_ibdev);
149 ib_event.event = IB_EVENT_PORT_ERR;
150 ib_event.device = &us_ibdev->ib_dev;
151 ib_event.element.port_num = 1;
152 ib_dispatch_event(&ib_event);
153 break;
154 case NETDEV_UP:
155 case NETDEV_DOWN:
156 case NETDEV_CHANGE:
157 if (!us_ibdev->ufdev->link_up &&
158 netif_carrier_ok(netdev)) {
159 usnic_fwd_carrier_up(us_ibdev->ufdev);
160 usnic_info("Link UP on %s\n",
161 dev_name(&us_ibdev->ib_dev.dev));
162 ib_event.event = IB_EVENT_PORT_ACTIVE;
163 ib_event.device = &us_ibdev->ib_dev;
164 ib_event.element.port_num = 1;
165 ib_dispatch_event(&ib_event);
166 } else if (us_ibdev->ufdev->link_up &&
167 !netif_carrier_ok(netdev)) {
168 usnic_fwd_carrier_down(us_ibdev->ufdev);
169 usnic_info("Link DOWN on %s\n",
170 dev_name(&us_ibdev->ib_dev.dev));
171 usnic_ib_qp_grp_modify_active_to_err(us_ibdev);
172 ib_event.event = IB_EVENT_PORT_ERR;
173 ib_event.device = &us_ibdev->ib_dev;
174 ib_event.element.port_num = 1;
175 ib_dispatch_event(&ib_event);
176 } else {
177 usnic_dbg("Ignoring %s on %s\n",
178 netdev_cmd_to_name(event),
179 dev_name(&us_ibdev->ib_dev.dev));
180 }
181 break;
182 case NETDEV_CHANGEADDR:
183 if (!memcmp(us_ibdev->ufdev->mac, netdev->dev_addr,
184 sizeof(us_ibdev->ufdev->mac))) {
185 usnic_dbg("Ignoring addr change on %s\n",
186 dev_name(&us_ibdev->ib_dev.dev));
187 } else {
188 usnic_info(" %s old mac: %pM new mac: %pM\n",
189 dev_name(&us_ibdev->ib_dev.dev),
190 us_ibdev->ufdev->mac,
191 netdev->dev_addr);
192 usnic_fwd_set_mac(us_ibdev->ufdev, netdev->dev_addr);
193 usnic_ib_qp_grp_modify_active_to_err(us_ibdev);
194 ib_event.event = IB_EVENT_GID_CHANGE;
195 ib_event.device = &us_ibdev->ib_dev;
196 ib_event.element.port_num = 1;
197 ib_dispatch_event(&ib_event);
198 }
199
200 break;
201 case NETDEV_CHANGEMTU:
202 if (us_ibdev->ufdev->mtu != netdev->mtu) {
203 usnic_info("MTU Change on %s old: %u new: %u\n",
204 dev_name(&us_ibdev->ib_dev.dev),
205 us_ibdev->ufdev->mtu, netdev->mtu);
206 usnic_fwd_set_mtu(us_ibdev->ufdev, netdev->mtu);
207 usnic_ib_qp_grp_modify_active_to_err(us_ibdev);
208 } else {
209 usnic_dbg("Ignoring MTU change on %s\n",
210 dev_name(&us_ibdev->ib_dev.dev));
211 }
212 break;
213 default:
214 usnic_dbg("Ignoring event %s on %s",
215 netdev_cmd_to_name(event),
216 dev_name(&us_ibdev->ib_dev.dev));
217 }
218 mutex_unlock(&us_ibdev->usdev_lock);
219 }
220
221 static int usnic_ib_netdevice_event(struct notifier_block *notifier,
222 unsigned long event, void *ptr)
223 {
224 struct usnic_ib_dev *us_ibdev;
225 struct ib_device *ibdev;
226
227 struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
228
229 ibdev = ib_device_get_by_netdev(netdev, RDMA_DRIVER_USNIC);
230 if (!ibdev)
231 return NOTIFY_DONE;
232
233 us_ibdev = container_of(ibdev, struct usnic_ib_dev, ib_dev);
234 usnic_ib_handle_usdev_event(us_ibdev, event);
235 ib_device_put(ibdev);
236 return NOTIFY_DONE;
237 }
238
239 static struct notifier_block usnic_ib_netdevice_notifier = {
240 .notifier_call = usnic_ib_netdevice_event
241 };
242
243
244
245 static int usnic_ib_handle_inet_event(struct usnic_ib_dev *us_ibdev,
246 unsigned long event, void *ptr)
247 {
248 struct in_ifaddr *ifa = ptr;
249 struct ib_event ib_event;
250
251 mutex_lock(&us_ibdev->usdev_lock);
252
253 switch (event) {
254 case NETDEV_DOWN:
255 usnic_info("%s via ip notifiers",
256 netdev_cmd_to_name(event));
257 usnic_fwd_del_ipaddr(us_ibdev->ufdev);
258 usnic_ib_qp_grp_modify_active_to_err(us_ibdev);
259 ib_event.event = IB_EVENT_GID_CHANGE;
260 ib_event.device = &us_ibdev->ib_dev;
261 ib_event.element.port_num = 1;
262 ib_dispatch_event(&ib_event);
263 break;
264 case NETDEV_UP:
265 usnic_fwd_add_ipaddr(us_ibdev->ufdev, ifa->ifa_address);
266 usnic_info("%s via ip notifiers: ip %pI4",
267 netdev_cmd_to_name(event),
268 &us_ibdev->ufdev->inaddr);
269 ib_event.event = IB_EVENT_GID_CHANGE;
270 ib_event.device = &us_ibdev->ib_dev;
271 ib_event.element.port_num = 1;
272 ib_dispatch_event(&ib_event);
273 break;
274 default:
275 usnic_info("Ignoring event %s on %s",
276 netdev_cmd_to_name(event),
277 dev_name(&us_ibdev->ib_dev.dev));
278 }
279 mutex_unlock(&us_ibdev->usdev_lock);
280
281 return NOTIFY_DONE;
282 }
283
284 static int usnic_ib_inetaddr_event(struct notifier_block *notifier,
285 unsigned long event, void *ptr)
286 {
287 struct usnic_ib_dev *us_ibdev;
288 struct in_ifaddr *ifa = ptr;
289 struct net_device *netdev = ifa->ifa_dev->dev;
290 struct ib_device *ibdev;
291
292 ibdev = ib_device_get_by_netdev(netdev, RDMA_DRIVER_USNIC);
293 if (!ibdev)
294 return NOTIFY_DONE;
295
296 us_ibdev = container_of(ibdev, struct usnic_ib_dev, ib_dev);
297 usnic_ib_handle_inet_event(us_ibdev, event, ptr);
298 ib_device_put(ibdev);
299 return NOTIFY_DONE;
300 }
301 static struct notifier_block usnic_ib_inetaddr_notifier = {
302 .notifier_call = usnic_ib_inetaddr_event
303 };
304
305
306 static int usnic_port_immutable(struct ib_device *ibdev, u8 port_num,
307 struct ib_port_immutable *immutable)
308 {
309 struct ib_port_attr attr;
310 int err;
311
312 immutable->core_cap_flags = RDMA_CORE_PORT_USNIC;
313
314 err = ib_query_port(ibdev, port_num, &attr);
315 if (err)
316 return err;
317
318 immutable->pkey_tbl_len = attr.pkey_tbl_len;
319 immutable->gid_tbl_len = attr.gid_tbl_len;
320
321 return 0;
322 }
323
324 static void usnic_get_dev_fw_str(struct ib_device *device, char *str)
325 {
326 struct usnic_ib_dev *us_ibdev =
327 container_of(device, struct usnic_ib_dev, ib_dev);
328 struct ethtool_drvinfo info;
329
330 mutex_lock(&us_ibdev->usdev_lock);
331 us_ibdev->netdev->ethtool_ops->get_drvinfo(us_ibdev->netdev, &info);
332 mutex_unlock(&us_ibdev->usdev_lock);
333
334 snprintf(str, IB_FW_VERSION_NAME_MAX, "%s", info.fw_version);
335 }
336
337 static const struct ib_device_ops usnic_dev_ops = {
338 .owner = THIS_MODULE,
339 .driver_id = RDMA_DRIVER_USNIC,
340 .uverbs_abi_ver = USNIC_UVERBS_ABI_VERSION,
341
342 .alloc_pd = usnic_ib_alloc_pd,
343 .alloc_ucontext = usnic_ib_alloc_ucontext,
344 .create_cq = usnic_ib_create_cq,
345 .create_qp = usnic_ib_create_qp,
346 .dealloc_pd = usnic_ib_dealloc_pd,
347 .dealloc_ucontext = usnic_ib_dealloc_ucontext,
348 .dereg_mr = usnic_ib_dereg_mr,
349 .destroy_cq = usnic_ib_destroy_cq,
350 .destroy_qp = usnic_ib_destroy_qp,
351 .get_dev_fw_str = usnic_get_dev_fw_str,
352 .get_link_layer = usnic_ib_port_link_layer,
353 .get_port_immutable = usnic_port_immutable,
354 .mmap = usnic_ib_mmap,
355 .modify_qp = usnic_ib_modify_qp,
356 .query_device = usnic_ib_query_device,
357 .query_gid = usnic_ib_query_gid,
358 .query_pkey = usnic_ib_query_pkey,
359 .query_port = usnic_ib_query_port,
360 .query_qp = usnic_ib_query_qp,
361 .reg_user_mr = usnic_ib_reg_mr,
362 INIT_RDMA_OBJ_SIZE(ib_pd, usnic_ib_pd, ibpd),
363 INIT_RDMA_OBJ_SIZE(ib_cq, usnic_ib_cq, ibcq),
364 INIT_RDMA_OBJ_SIZE(ib_ucontext, usnic_ib_ucontext, ibucontext),
365 };
366
367
368 static void *usnic_ib_device_add(struct pci_dev *dev)
369 {
370 struct usnic_ib_dev *us_ibdev;
371 union ib_gid gid;
372 struct in_device *ind;
373 struct net_device *netdev;
374 int ret;
375
376 usnic_dbg("\n");
377 netdev = pci_get_drvdata(dev);
378
379 us_ibdev = ib_alloc_device(usnic_ib_dev, ib_dev);
380 if (!us_ibdev) {
381 usnic_err("Device %s context alloc failed\n",
382 netdev_name(pci_get_drvdata(dev)));
383 return ERR_PTR(-EFAULT);
384 }
385
386 us_ibdev->ufdev = usnic_fwd_dev_alloc(dev);
387 if (!us_ibdev->ufdev) {
388 usnic_err("Failed to alloc ufdev for %s\n", pci_name(dev));
389 goto err_dealloc;
390 }
391
392 mutex_init(&us_ibdev->usdev_lock);
393 INIT_LIST_HEAD(&us_ibdev->vf_dev_list);
394 INIT_LIST_HEAD(&us_ibdev->ctx_list);
395
396 us_ibdev->pdev = dev;
397 us_ibdev->netdev = pci_get_drvdata(dev);
398 us_ibdev->ib_dev.node_type = RDMA_NODE_USNIC_UDP;
399 us_ibdev->ib_dev.phys_port_cnt = USNIC_IB_PORT_CNT;
400 us_ibdev->ib_dev.num_comp_vectors = USNIC_IB_NUM_COMP_VECTORS;
401 us_ibdev->ib_dev.dev.parent = &dev->dev;
402
403 us_ibdev->ib_dev.uverbs_cmd_mask =
404 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
405 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
406 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
407 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
408 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
409 (1ull << IB_USER_VERBS_CMD_REG_MR) |
410 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
411 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
412 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
413 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
414 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
415 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
416 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
417 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
418 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
419 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
420 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
421
422 ib_set_device_ops(&us_ibdev->ib_dev, &usnic_dev_ops);
423
424 rdma_set_device_sysfs_group(&us_ibdev->ib_dev, &usnic_attr_group);
425
426 ret = ib_device_set_netdev(&us_ibdev->ib_dev, us_ibdev->netdev, 1);
427 if (ret)
428 goto err_fwd_dealloc;
429
430 if (ib_register_device(&us_ibdev->ib_dev, "usnic_%d"))
431 goto err_fwd_dealloc;
432
433 usnic_fwd_set_mtu(us_ibdev->ufdev, us_ibdev->netdev->mtu);
434 usnic_fwd_set_mac(us_ibdev->ufdev, us_ibdev->netdev->dev_addr);
435 if (netif_carrier_ok(us_ibdev->netdev))
436 usnic_fwd_carrier_up(us_ibdev->ufdev);
437
438 rcu_read_lock();
439 ind = __in_dev_get_rcu(netdev);
440 if (ind) {
441 const struct in_ifaddr *ifa;
442
443 ifa = rcu_dereference(ind->ifa_list);
444 if (ifa)
445 usnic_fwd_add_ipaddr(us_ibdev->ufdev, ifa->ifa_address);
446 }
447 rcu_read_unlock();
448
449 usnic_mac_ip_to_gid(us_ibdev->netdev->perm_addr,
450 us_ibdev->ufdev->inaddr, &gid.raw[0]);
451 memcpy(&us_ibdev->ib_dev.node_guid, &gid.global.interface_id,
452 sizeof(gid.global.interface_id));
453 kref_init(&us_ibdev->vf_cnt);
454
455 usnic_info("Added ibdev: %s netdev: %s with mac %pM Link: %u MTU: %u\n",
456 dev_name(&us_ibdev->ib_dev.dev),
457 netdev_name(us_ibdev->netdev), us_ibdev->ufdev->mac,
458 us_ibdev->ufdev->link_up, us_ibdev->ufdev->mtu);
459 return us_ibdev;
460
461 err_fwd_dealloc:
462 usnic_fwd_dev_free(us_ibdev->ufdev);
463 err_dealloc:
464 usnic_err("failed -- deallocing device\n");
465 ib_dealloc_device(&us_ibdev->ib_dev);
466 return NULL;
467 }
468
469 static void usnic_ib_device_remove(struct usnic_ib_dev *us_ibdev)
470 {
471 usnic_info("Unregistering %s\n", dev_name(&us_ibdev->ib_dev.dev));
472 usnic_ib_sysfs_unregister_usdev(us_ibdev);
473 usnic_fwd_dev_free(us_ibdev->ufdev);
474 ib_unregister_device(&us_ibdev->ib_dev);
475 ib_dealloc_device(&us_ibdev->ib_dev);
476 }
477
478 static void usnic_ib_undiscover_pf(struct kref *kref)
479 {
480 struct usnic_ib_dev *us_ibdev, *tmp;
481 struct pci_dev *dev;
482 bool found = false;
483
484 dev = container_of(kref, struct usnic_ib_dev, vf_cnt)->pdev;
485 mutex_lock(&usnic_ib_ibdev_list_lock);
486 list_for_each_entry_safe(us_ibdev, tmp,
487 &usnic_ib_ibdev_list, ib_dev_link) {
488 if (us_ibdev->pdev == dev) {
489 list_del(&us_ibdev->ib_dev_link);
490 found = true;
491 break;
492 }
493 }
494
495
496 mutex_unlock(&usnic_ib_ibdev_list_lock);
497 if (found)
498 usnic_ib_device_remove(us_ibdev);
499 else
500 WARN(1, "Failed to remove PF %s\n", pci_name(dev));
501 }
502
503 static struct usnic_ib_dev *usnic_ib_discover_pf(struct usnic_vnic *vnic)
504 {
505 struct usnic_ib_dev *us_ibdev;
506 struct pci_dev *parent_pci, *vf_pci;
507 int err;
508
509 vf_pci = usnic_vnic_get_pdev(vnic);
510 parent_pci = pci_physfn(vf_pci);
511
512 BUG_ON(!parent_pci);
513
514 mutex_lock(&usnic_ib_ibdev_list_lock);
515 list_for_each_entry(us_ibdev, &usnic_ib_ibdev_list, ib_dev_link) {
516 if (us_ibdev->pdev == parent_pci) {
517 kref_get(&us_ibdev->vf_cnt);
518 goto out;
519 }
520 }
521
522 us_ibdev = usnic_ib_device_add(parent_pci);
523 if (IS_ERR_OR_NULL(us_ibdev)) {
524 us_ibdev = us_ibdev ? us_ibdev : ERR_PTR(-EFAULT);
525 goto out;
526 }
527
528 err = usnic_ib_sysfs_register_usdev(us_ibdev);
529 if (err) {
530 usnic_ib_device_remove(us_ibdev);
531 us_ibdev = ERR_PTR(err);
532 goto out;
533 }
534
535 list_add(&us_ibdev->ib_dev_link, &usnic_ib_ibdev_list);
536 out:
537 mutex_unlock(&usnic_ib_ibdev_list_lock);
538 return us_ibdev;
539 }
540
541
542
543
544 static const struct pci_device_id usnic_ib_pci_ids[] = {
545 {PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_VIC_USPACE_NIC)},
546 {0,}
547 };
548
549 static int usnic_ib_pci_probe(struct pci_dev *pdev,
550 const struct pci_device_id *id)
551 {
552 int err;
553 struct usnic_ib_dev *pf;
554 struct usnic_ib_vf *vf;
555 enum usnic_vnic_res_type res_type;
556
557 vf = kzalloc(sizeof(*vf), GFP_KERNEL);
558 if (!vf)
559 return -ENOMEM;
560
561 err = pci_enable_device(pdev);
562 if (err) {
563 usnic_err("Failed to enable %s with err %d\n",
564 pci_name(pdev), err);
565 goto out_clean_vf;
566 }
567
568 err = pci_request_regions(pdev, DRV_NAME);
569 if (err) {
570 usnic_err("Failed to request region for %s with err %d\n",
571 pci_name(pdev), err);
572 goto out_disable_device;
573 }
574
575 pci_set_master(pdev);
576 pci_set_drvdata(pdev, vf);
577
578 vf->vnic = usnic_vnic_alloc(pdev);
579 if (IS_ERR_OR_NULL(vf->vnic)) {
580 err = vf->vnic ? PTR_ERR(vf->vnic) : -ENOMEM;
581 usnic_err("Failed to alloc vnic for %s with err %d\n",
582 pci_name(pdev), err);
583 goto out_release_regions;
584 }
585
586 pf = usnic_ib_discover_pf(vf->vnic);
587 if (IS_ERR_OR_NULL(pf)) {
588 usnic_err("Failed to discover pf of vnic %s with err%ld\n",
589 pci_name(pdev), PTR_ERR(pf));
590 err = pf ? PTR_ERR(pf) : -EFAULT;
591 goto out_clean_vnic;
592 }
593
594 vf->pf = pf;
595 spin_lock_init(&vf->lock);
596 mutex_lock(&pf->usdev_lock);
597 list_add_tail(&vf->link, &pf->vf_dev_list);
598
599
600
601
602 for (res_type = USNIC_VNIC_RES_TYPE_EOL+1;
603 res_type < USNIC_VNIC_RES_TYPE_MAX;
604 res_type++) {
605 pf->vf_res_cnt[res_type] = usnic_vnic_res_cnt(vf->vnic,
606 res_type);
607 }
608
609 mutex_unlock(&pf->usdev_lock);
610
611 usnic_info("Registering usnic VF %s into PF %s\n", pci_name(pdev),
612 dev_name(&pf->ib_dev.dev));
613 usnic_ib_log_vf(vf);
614 return 0;
615
616 out_clean_vnic:
617 usnic_vnic_free(vf->vnic);
618 out_release_regions:
619 pci_set_drvdata(pdev, NULL);
620 pci_clear_master(pdev);
621 pci_release_regions(pdev);
622 out_disable_device:
623 pci_disable_device(pdev);
624 out_clean_vf:
625 kfree(vf);
626 return err;
627 }
628
629 static void usnic_ib_pci_remove(struct pci_dev *pdev)
630 {
631 struct usnic_ib_vf *vf = pci_get_drvdata(pdev);
632 struct usnic_ib_dev *pf = vf->pf;
633
634 mutex_lock(&pf->usdev_lock);
635 list_del(&vf->link);
636 mutex_unlock(&pf->usdev_lock);
637
638 kref_put(&pf->vf_cnt, usnic_ib_undiscover_pf);
639 usnic_vnic_free(vf->vnic);
640 pci_set_drvdata(pdev, NULL);
641 pci_clear_master(pdev);
642 pci_release_regions(pdev);
643 pci_disable_device(pdev);
644 kfree(vf);
645
646 usnic_info("Removed VF %s\n", pci_name(pdev));
647 }
648
649
650 static struct pci_driver usnic_ib_pci_driver = {
651 .name = DRV_NAME,
652 .id_table = usnic_ib_pci_ids,
653 .probe = usnic_ib_pci_probe,
654 .remove = usnic_ib_pci_remove,
655 };
656
657
658
659 static int __init usnic_ib_init(void)
660 {
661 int err;
662
663 printk_once(KERN_INFO "%s", usnic_version);
664
665 err = usnic_uiom_init(DRV_NAME);
666 if (err) {
667 usnic_err("Unable to initialize umem with err %d\n", err);
668 return err;
669 }
670
671 err = pci_register_driver(&usnic_ib_pci_driver);
672 if (err) {
673 usnic_err("Unable to register with PCI\n");
674 goto out_umem_fini;
675 }
676
677 err = register_netdevice_notifier(&usnic_ib_netdevice_notifier);
678 if (err) {
679 usnic_err("Failed to register netdev notifier\n");
680 goto out_pci_unreg;
681 }
682
683 err = register_inetaddr_notifier(&usnic_ib_inetaddr_notifier);
684 if (err) {
685 usnic_err("Failed to register inet addr notifier\n");
686 goto out_unreg_netdev_notifier;
687 }
688
689 err = usnic_transport_init();
690 if (err) {
691 usnic_err("Failed to initialize transport\n");
692 goto out_unreg_inetaddr_notifier;
693 }
694
695 usnic_debugfs_init();
696
697 return 0;
698
699 out_unreg_inetaddr_notifier:
700 unregister_inetaddr_notifier(&usnic_ib_inetaddr_notifier);
701 out_unreg_netdev_notifier:
702 unregister_netdevice_notifier(&usnic_ib_netdevice_notifier);
703 out_pci_unreg:
704 pci_unregister_driver(&usnic_ib_pci_driver);
705 out_umem_fini:
706
707 return err;
708 }
709
710 static void __exit usnic_ib_destroy(void)
711 {
712 usnic_dbg("\n");
713 usnic_debugfs_exit();
714 usnic_transport_fini();
715 unregister_inetaddr_notifier(&usnic_ib_inetaddr_notifier);
716 unregister_netdevice_notifier(&usnic_ib_netdevice_notifier);
717 pci_unregister_driver(&usnic_ib_pci_driver);
718 }
719
720 MODULE_DESCRIPTION("Cisco VIC (usNIC) Verbs Driver");
721 MODULE_AUTHOR("Upinder Malhi <umalhi@cisco.com>");
722 MODULE_LICENSE("Dual BSD/GPL");
723 module_param(usnic_log_lvl, uint, S_IRUGO | S_IWUSR);
724 module_param(usnic_ib_share_vf, uint, S_IRUGO | S_IWUSR);
725 MODULE_PARM_DESC(usnic_log_lvl, " Off=0, Err=1, Info=2, Debug=3");
726 MODULE_PARM_DESC(usnic_ib_share_vf, "Off=0, On=1 VF sharing amongst QPs");
727 MODULE_DEVICE_TABLE(pci, usnic_ib_pci_ids);
728
729 module_init(usnic_ib_init);
730 module_exit(usnic_ib_destroy);
731