2 * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * Author: Upinder Malhi <umalhi@cisco.com>
33 * Author: Anant Deepak <anadeepa@cisco.com>
34 * Author: Cesare Cantu' <cantuc@cisco.com>
35 * Author: Jeff Squyres <jsquyres@cisco.com>
36 * Author: Kiran Thirumalai <kithirum@cisco.com>
37 * Author: Xuyang Wang <xuywang@cisco.com>
38 * Author: Reese Faucette <rfaucett@cisco.com>
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>
50 #include <rdma/ib_user_verbs.h>
51 #include <rdma/ib_addr.h>
53 #include "usnic_abi.h"
54 #include "usnic_common_util.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"
65 unsigned int usnic_log_lvl = USNIC_LOG_LVL_ERR;
66 unsigned int usnic_ib_share_vf = 1;
68 static const char usnic_version[] =
69 DRV_NAME ": Cisco VIC (USNIC) Verbs Driver v"
70 DRV_VERSION " (" DRV_RELDATE ")\n";
72 static DEFINE_MUTEX(usnic_ib_ibdev_list_lock);
73 static LIST_HEAD(usnic_ib_ibdev_list);
75 /* Callback dump funcs */
76 static int usnic_ib_dump_vf_hdr(void *obj, char *buf, int buf_sz)
78 struct usnic_ib_vf *vf = obj;
79 return scnprintf(buf, buf_sz, "PF: %s ", vf->pf->ib_dev.name);
81 /* End callback dump funcs */
83 static void usnic_ib_dump_vf(struct usnic_ib_vf *vf, char *buf, int buf_sz)
85 usnic_vnic_dump(vf->vnic, buf, buf_sz, vf,
87 usnic_ib_qp_grp_dump_hdr, usnic_ib_qp_grp_dump_rows);
90 void usnic_ib_log_vf(struct usnic_ib_vf *vf)
93 usnic_ib_dump_vf(vf, buf, sizeof(buf));
94 usnic_dbg("%s\n", buf);
97 /* Start of netdev section */
98 static void usnic_ib_qp_grp_modify_active_to_err(struct usnic_ib_dev *us_ibdev)
100 struct usnic_ib_ucontext *ctx;
101 struct usnic_ib_qp_grp *qp_grp;
102 enum ib_qp_state cur_state;
105 BUG_ON(!mutex_is_locked(&us_ibdev->usdev_lock));
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,
117 usnic_err("Failed to transistion qp grp %u from %s to %s\n",
119 usnic_ib_qp_grp_state_to_string
121 usnic_ib_qp_grp_state_to_string
129 static void usnic_ib_handle_usdev_event(struct usnic_ib_dev *us_ibdev,
132 struct net_device *netdev;
133 struct ib_event ib_event;
135 memset(&ib_event, 0, sizeof(ib_event));
137 mutex_lock(&us_ibdev->usdev_lock);
138 netdev = us_ibdev->netdev;
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);
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);
169 usnic_dbg("Ignoring %s on %s\n",
170 netdev_cmd_to_name(event),
171 us_ibdev->ib_dev.name);
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);
180 usnic_info(" %s old mac: %pM new mac: %pM\n",
181 us_ibdev->ib_dev.name,
182 us_ibdev->ufdev->mac,
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);
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);
201 usnic_dbg("Ignoring MTU change on %s\n",
202 us_ibdev->ib_dev.name);
206 usnic_dbg("Ignoring event %s on %s",
207 netdev_cmd_to_name(event),
208 us_ibdev->ib_dev.name);
210 mutex_unlock(&us_ibdev->usdev_lock);
213 static int usnic_ib_netdevice_event(struct notifier_block *notifier,
214 unsigned long event, void *ptr)
216 struct usnic_ib_dev *us_ibdev;
218 struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
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);
227 mutex_unlock(&usnic_ib_ibdev_list_lock);
232 static struct notifier_block usnic_ib_netdevice_notifier = {
233 .notifier_call = usnic_ib_netdevice_event
235 /* End of netdev section */
237 /* Start of inet section */
238 static int usnic_ib_handle_inet_event(struct usnic_ib_dev *us_ibdev,
239 unsigned long event, void *ptr)
241 struct in_ifaddr *ifa = ptr;
242 struct ib_event ib_event;
244 mutex_lock(&us_ibdev->usdev_lock);
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);
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);
268 usnic_info("Ignoring event %s on %s",
269 netdev_cmd_to_name(event),
270 us_ibdev->ib_dev.name);
272 mutex_unlock(&us_ibdev->usdev_lock);
277 static int usnic_ib_inetaddr_event(struct notifier_block *notifier,
278 unsigned long event, void *ptr)
280 struct usnic_ib_dev *us_ibdev;
281 struct in_ifaddr *ifa = ptr;
282 struct net_device *netdev = ifa->ifa_dev->dev;
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);
291 mutex_unlock(&usnic_ib_ibdev_list_lock);
295 static struct notifier_block usnic_ib_inetaddr_notifier = {
296 .notifier_call = usnic_ib_inetaddr_event
298 /* End of inet section*/
300 static int usnic_port_immutable(struct ib_device *ibdev, u8 port_num,
301 struct ib_port_immutable *immutable)
303 struct ib_port_attr attr;
306 immutable->core_cap_flags = RDMA_CORE_PORT_USNIC;
308 err = ib_query_port(ibdev, port_num, &attr);
312 immutable->pkey_tbl_len = attr.pkey_tbl_len;
313 immutable->gid_tbl_len = attr.gid_tbl_len;
318 static void usnic_get_dev_fw_str(struct ib_device *device, char *str)
320 struct usnic_ib_dev *us_ibdev =
321 container_of(device, struct usnic_ib_dev, ib_dev);
322 struct ethtool_drvinfo info;
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);
328 snprintf(str, IB_FW_VERSION_NAME_MAX, "%s", info.fw_version);
331 /* Start of PF discovery section */
332 static void *usnic_ib_device_add(struct pci_dev *dev)
334 struct usnic_ib_dev *us_ibdev;
336 struct in_device *ind;
337 struct net_device *netdev;
340 netdev = pci_get_drvdata(dev);
342 us_ibdev = (struct usnic_ib_dev *)ib_alloc_device(sizeof(*us_ibdev));
344 usnic_err("Device %s context alloc failed\n",
345 netdev_name(pci_get_drvdata(dev)));
346 return ERR_PTR(-EFAULT);
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));
355 mutex_init(&us_ibdev->usdev_lock);
356 INIT_LIST_HEAD(&us_ibdev->vf_dev_list);
357 INIT_LIST_HEAD(&us_ibdev->ctx_list);
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);
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);
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;
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;
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);
427 ind = in_dev_get(netdev);
429 usnic_fwd_add_ipaddr(us_ibdev->ufdev,
430 ind->ifa_list->ifa_address);
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);
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);
446 usnic_fwd_dev_free(us_ibdev->ufdev);
448 usnic_err("failed -- deallocing device\n");
449 ib_dealloc_device(&us_ibdev->ib_dev);
453 static void usnic_ib_device_remove(struct usnic_ib_dev *us_ibdev)
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);
462 static void usnic_ib_undiscover_pf(struct kref *kref)
464 struct usnic_ib_dev *us_ibdev, *tmp;
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);
480 WARN(!found, "Failed to remove PF %s\n", pci_name(dev));
482 mutex_unlock(&usnic_ib_ibdev_list_lock);
485 static struct usnic_ib_dev *usnic_ib_discover_pf(struct usnic_vnic *vnic)
487 struct usnic_ib_dev *us_ibdev;
488 struct pci_dev *parent_pci, *vf_pci;
491 vf_pci = usnic_vnic_get_pdev(vnic);
492 parent_pci = pci_physfn(vf_pci);
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);
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);
510 err = usnic_ib_sysfs_register_usdev(us_ibdev);
512 usnic_ib_device_remove(us_ibdev);
513 us_ibdev = ERR_PTR(err);
517 list_add(&us_ibdev->ib_dev_link, &usnic_ib_ibdev_list);
519 mutex_unlock(&usnic_ib_ibdev_list_lock);
522 /* End of PF discovery section */
524 /* Start of PCI section */
526 static const struct pci_device_id usnic_ib_pci_ids[] = {
527 {PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_VIC_USPACE_NIC)},
531 static int usnic_ib_pci_probe(struct pci_dev *pdev,
532 const struct pci_device_id *id)
535 struct usnic_ib_dev *pf;
536 struct usnic_ib_vf *vf;
537 enum usnic_vnic_res_type res_type;
539 vf = kzalloc(sizeof(*vf), GFP_KERNEL);
543 err = pci_enable_device(pdev);
545 usnic_err("Failed to enable %s with err %d\n",
546 pci_name(pdev), err);
550 err = pci_request_regions(pdev, DRV_NAME);
552 usnic_err("Failed to request region for %s with err %d\n",
553 pci_name(pdev), err);
554 goto out_disable_device;
557 pci_set_master(pdev);
558 pci_set_drvdata(pdev, vf);
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;
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;
577 spin_lock_init(&vf->lock);
578 mutex_lock(&pf->usdev_lock);
579 list_add_tail(&vf->link, &pf->vf_dev_list);
581 * Save max settings (will be same for each VF, easier to re-write than
582 * to say "if (!set) { set_values(); set=1; }
584 for (res_type = USNIC_VNIC_RES_TYPE_EOL+1;
585 res_type < USNIC_VNIC_RES_TYPE_MAX;
587 pf->vf_res_cnt[res_type] = usnic_vnic_res_cnt(vf->vnic,
591 mutex_unlock(&pf->usdev_lock);
593 usnic_info("Registering usnic VF %s into PF %s\n", pci_name(pdev),
599 usnic_vnic_free(vf->vnic);
601 pci_set_drvdata(pdev, NULL);
602 pci_clear_master(pdev);
603 pci_release_regions(pdev);
605 pci_disable_device(pdev);
611 static void usnic_ib_pci_remove(struct pci_dev *pdev)
613 struct usnic_ib_vf *vf = pci_get_drvdata(pdev);
614 struct usnic_ib_dev *pf = vf->pf;
616 mutex_lock(&pf->usdev_lock);
618 mutex_unlock(&pf->usdev_lock);
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);
628 usnic_info("Removed VF %s\n", pci_name(pdev));
631 /* PCI driver entry points */
632 static struct pci_driver usnic_ib_pci_driver = {
634 .id_table = usnic_ib_pci_ids,
635 .probe = usnic_ib_pci_probe,
636 .remove = usnic_ib_pci_remove,
638 /* End of PCI section */
640 /* Start of module section */
641 static int __init usnic_ib_init(void)
645 printk_once(KERN_INFO "%s", usnic_version);
647 err = usnic_uiom_init(DRV_NAME);
649 usnic_err("Unable to initalize umem with err %d\n", err);
653 err = pci_register_driver(&usnic_ib_pci_driver);
655 usnic_err("Unable to register with PCI\n");
659 err = register_netdevice_notifier(&usnic_ib_netdevice_notifier);
661 usnic_err("Failed to register netdev notifier\n");
665 err = register_inetaddr_notifier(&usnic_ib_inetaddr_notifier);
667 usnic_err("Failed to register inet addr notifier\n");
668 goto out_unreg_netdev_notifier;
671 err = usnic_transport_init();
673 usnic_err("Failed to initialize transport\n");
674 goto out_unreg_inetaddr_notifier;
677 usnic_debugfs_init();
681 out_unreg_inetaddr_notifier:
682 unregister_inetaddr_notifier(&usnic_ib_inetaddr_notifier);
683 out_unreg_netdev_notifier:
684 unregister_netdevice_notifier(&usnic_ib_netdevice_notifier);
686 pci_unregister_driver(&usnic_ib_pci_driver);
693 static void __exit usnic_ib_destroy(void)
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);
704 MODULE_DESCRIPTION("Cisco VIC (usNIC) Verbs Driver");
705 MODULE_AUTHOR("Upinder Malhi <umalhi@cisco.com>");
706 MODULE_LICENSE("Dual BSD/GPL");
707 module_param(usnic_log_lvl, uint, S_IRUGO | S_IWUSR);
708 module_param(usnic_ib_share_vf, uint, S_IRUGO | S_IWUSR);
709 MODULE_PARM_DESC(usnic_log_lvl, " Off=0, Err=1, Info=2, Debug=3");
710 MODULE_PARM_DESC(usnic_ib_share_vf, "Off=0, On=1 VF sharing amongst QPs");
711 MODULE_DEVICE_TABLE(pci, usnic_ib_pci_ids);
713 module_init(usnic_ib_init);
714 module_exit(usnic_ib_destroy);
715 /* End of module section */