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e3cf00d0 UM |
1 | /* |
2 | * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved. | |
3 | * | |
3805eade JS |
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 | |
8 | * BSD license below: | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or | |
11 | * without modification, are permitted provided that the following | |
12 | * conditions are met: | |
13 | * | |
14 | * - Redistributions of source code must retain the above | |
15 | * copyright notice, this list of conditions and the following | |
16 | * disclaimer. | |
17 | * | |
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. | |
e3cf00d0 UM |
22 | * |
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 | |
30 | * SOFTWARE. | |
31 | * | |
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> | |
39 | * | |
40 | */ | |
41 | ||
42 | #include <linux/module.h> | |
c7845bca | 43 | #include <linux/inetdevice.h> |
e3cf00d0 UM |
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 | /* Callback dump funcs */ | |
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 ", vf->pf->ib_dev.name); | |
80 | } | |
81 | /* End callback dump funcs */ | |
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[1000]; | |
93 | usnic_ib_dump_vf(vf, buf, sizeof(buf)); | |
94 | usnic_dbg("%s\n", buf); | |
95 | } | |
96 | ||
97 | /* Start of netdev section */ | |
98 | static inline const char *usnic_ib_netdev_event_to_string(unsigned long event) | |
99 | { | |
100 | const char *event2str[] = {"NETDEV_NONE", "NETDEV_UP", "NETDEV_DOWN", | |
101 | "NETDEV_REBOOT", "NETDEV_CHANGE", | |
102 | "NETDEV_REGISTER", "NETDEV_UNREGISTER", "NETDEV_CHANGEMTU", | |
103 | "NETDEV_CHANGEADDR", "NETDEV_GOING_DOWN", "NETDEV_FEAT_CHANGE", | |
104 | "NETDEV_BONDING_FAILOVER", "NETDEV_PRE_UP", | |
105 | "NETDEV_PRE_TYPE_CHANGE", "NETDEV_POST_TYPE_CHANGE", | |
106 | "NETDEV_POST_INT", "NETDEV_UNREGISTER_FINAL", "NETDEV_RELEASE", | |
107 | "NETDEV_NOTIFY_PEERS", "NETDEV_JOIN" | |
108 | }; | |
109 | ||
110 | if (event >= ARRAY_SIZE(event2str)) | |
111 | return "UNKNOWN_NETDEV_EVENT"; | |
112 | else | |
113 | return event2str[event]; | |
114 | } | |
115 | ||
116 | static void usnic_ib_qp_grp_modify_active_to_err(struct usnic_ib_dev *us_ibdev) | |
117 | { | |
118 | struct usnic_ib_ucontext *ctx; | |
119 | struct usnic_ib_qp_grp *qp_grp; | |
120 | enum ib_qp_state cur_state; | |
121 | int status; | |
122 | ||
123 | BUG_ON(!mutex_is_locked(&us_ibdev->usdev_lock)); | |
124 | ||
125 | list_for_each_entry(ctx, &us_ibdev->ctx_list, link) { | |
126 | list_for_each_entry(qp_grp, &ctx->qp_grp_list, link) { | |
127 | cur_state = qp_grp->state; | |
128 | if (cur_state == IB_QPS_INIT || | |
129 | cur_state == IB_QPS_RTR || | |
130 | cur_state == IB_QPS_RTS) { | |
131 | status = usnic_ib_qp_grp_modify(qp_grp, | |
132 | IB_QPS_ERR, | |
133 | NULL); | |
134 | if (status) { | |
135 | usnic_err("Failed to transistion qp grp %u from %s to %s\n", | |
136 | qp_grp->grp_id, | |
137 | usnic_ib_qp_grp_state_to_string | |
138 | (cur_state), | |
139 | usnic_ib_qp_grp_state_to_string | |
140 | (IB_QPS_ERR)); | |
141 | } | |
142 | } | |
143 | } | |
144 | } | |
145 | } | |
146 | ||
147 | static void usnic_ib_handle_usdev_event(struct usnic_ib_dev *us_ibdev, | |
148 | unsigned long event) | |
149 | { | |
150 | struct net_device *netdev; | |
151 | struct ib_event ib_event; | |
152 | ||
153 | memset(&ib_event, 0, sizeof(ib_event)); | |
154 | ||
155 | mutex_lock(&us_ibdev->usdev_lock); | |
156 | netdev = us_ibdev->netdev; | |
157 | switch (event) { | |
158 | case NETDEV_REBOOT: | |
159 | usnic_info("PF Reset on %s\n", us_ibdev->ib_dev.name); | |
160 | usnic_ib_qp_grp_modify_active_to_err(us_ibdev); | |
161 | ib_event.event = IB_EVENT_PORT_ERR; | |
162 | ib_event.device = &us_ibdev->ib_dev; | |
163 | ib_event.element.port_num = 1; | |
164 | ib_dispatch_event(&ib_event); | |
165 | break; | |
166 | case NETDEV_UP: | |
167 | case NETDEV_DOWN: | |
168 | case NETDEV_CHANGE: | |
8af94ac6 UM |
169 | if (!us_ibdev->ufdev->link_up && |
170 | netif_carrier_ok(netdev)) { | |
171 | usnic_fwd_carrier_up(us_ibdev->ufdev); | |
e3cf00d0 UM |
172 | usnic_info("Link UP on %s\n", us_ibdev->ib_dev.name); |
173 | ib_event.event = IB_EVENT_PORT_ACTIVE; | |
174 | ib_event.device = &us_ibdev->ib_dev; | |
175 | ib_event.element.port_num = 1; | |
176 | ib_dispatch_event(&ib_event); | |
8af94ac6 UM |
177 | } else if (us_ibdev->ufdev->link_up && |
178 | !netif_carrier_ok(netdev)) { | |
179 | usnic_fwd_carrier_down(us_ibdev->ufdev); | |
e3cf00d0 UM |
180 | usnic_info("Link DOWN on %s\n", us_ibdev->ib_dev.name); |
181 | usnic_ib_qp_grp_modify_active_to_err(us_ibdev); | |
182 | ib_event.event = IB_EVENT_PORT_ERR; | |
183 | ib_event.device = &us_ibdev->ib_dev; | |
184 | ib_event.element.port_num = 1; | |
185 | ib_dispatch_event(&ib_event); | |
186 | } else { | |
c30392ab | 187 | usnic_dbg("Ignoring %s on %s\n", |
e3cf00d0 UM |
188 | usnic_ib_netdev_event_to_string(event), |
189 | us_ibdev->ib_dev.name); | |
190 | } | |
191 | break; | |
192 | case NETDEV_CHANGEADDR: | |
8af94ac6 UM |
193 | if (!memcmp(us_ibdev->ufdev->mac, netdev->dev_addr, |
194 | sizeof(us_ibdev->ufdev->mac))) { | |
c30392ab | 195 | usnic_dbg("Ignoring addr change on %s\n", |
e3cf00d0 UM |
196 | us_ibdev->ib_dev.name); |
197 | } else { | |
198 | usnic_info(" %s old mac: %pM new mac: %pM\n", | |
199 | us_ibdev->ib_dev.name, | |
8af94ac6 | 200 | us_ibdev->ufdev->mac, |
e3cf00d0 | 201 | netdev->dev_addr); |
8af94ac6 | 202 | usnic_fwd_set_mac(us_ibdev->ufdev, netdev->dev_addr); |
e3cf00d0 UM |
203 | usnic_ib_qp_grp_modify_active_to_err(us_ibdev); |
204 | ib_event.event = IB_EVENT_GID_CHANGE; | |
205 | ib_event.device = &us_ibdev->ib_dev; | |
206 | ib_event.element.port_num = 1; | |
207 | ib_dispatch_event(&ib_event); | |
208 | } | |
209 | ||
210 | break; | |
211 | case NETDEV_CHANGEMTU: | |
8af94ac6 | 212 | if (us_ibdev->ufdev->mtu != netdev->mtu) { |
e3cf00d0 UM |
213 | usnic_info("MTU Change on %s old: %u new: %u\n", |
214 | us_ibdev->ib_dev.name, | |
8af94ac6 UM |
215 | us_ibdev->ufdev->mtu, netdev->mtu); |
216 | usnic_fwd_set_mtu(us_ibdev->ufdev, netdev->mtu); | |
e3cf00d0 UM |
217 | usnic_ib_qp_grp_modify_active_to_err(us_ibdev); |
218 | } else { | |
219 | usnic_dbg("Ignoring MTU change on %s\n", | |
220 | us_ibdev->ib_dev.name); | |
221 | } | |
222 | break; | |
223 | default: | |
c30392ab | 224 | usnic_dbg("Ignoring event %s on %s", |
e3cf00d0 UM |
225 | usnic_ib_netdev_event_to_string(event), |
226 | us_ibdev->ib_dev.name); | |
227 | } | |
228 | mutex_unlock(&us_ibdev->usdev_lock); | |
229 | } | |
230 | ||
231 | static int usnic_ib_netdevice_event(struct notifier_block *notifier, | |
232 | unsigned long event, void *ptr) | |
233 | { | |
234 | struct usnic_ib_dev *us_ibdev; | |
235 | ||
236 | struct net_device *netdev = netdev_notifier_info_to_dev(ptr); | |
237 | ||
238 | mutex_lock(&usnic_ib_ibdev_list_lock); | |
239 | list_for_each_entry(us_ibdev, &usnic_ib_ibdev_list, ib_dev_link) { | |
240 | if (us_ibdev->netdev == netdev) { | |
241 | usnic_ib_handle_usdev_event(us_ibdev, event); | |
242 | break; | |
243 | } | |
244 | } | |
245 | mutex_unlock(&usnic_ib_ibdev_list_lock); | |
246 | ||
247 | return NOTIFY_DONE; | |
248 | } | |
249 | ||
250 | static struct notifier_block usnic_ib_netdevice_notifier = { | |
251 | .notifier_call = usnic_ib_netdevice_event | |
252 | }; | |
253 | /* End of netdev section */ | |
254 | ||
c7845bca UM |
255 | /* Start of inet section */ |
256 | static int usnic_ib_handle_inet_event(struct usnic_ib_dev *us_ibdev, | |
257 | unsigned long event, void *ptr) | |
258 | { | |
259 | struct in_ifaddr *ifa = ptr; | |
260 | struct ib_event ib_event; | |
261 | ||
262 | mutex_lock(&us_ibdev->usdev_lock); | |
263 | ||
264 | switch (event) { | |
265 | case NETDEV_DOWN: | |
266 | usnic_info("%s via ip notifiers", | |
267 | usnic_ib_netdev_event_to_string(event)); | |
268 | usnic_fwd_del_ipaddr(us_ibdev->ufdev); | |
269 | usnic_ib_qp_grp_modify_active_to_err(us_ibdev); | |
270 | ib_event.event = IB_EVENT_GID_CHANGE; | |
271 | ib_event.device = &us_ibdev->ib_dev; | |
272 | ib_event.element.port_num = 1; | |
273 | ib_dispatch_event(&ib_event); | |
274 | break; | |
275 | case NETDEV_UP: | |
276 | usnic_fwd_add_ipaddr(us_ibdev->ufdev, ifa->ifa_address); | |
277 | usnic_info("%s via ip notifiers: ip %pI4", | |
278 | usnic_ib_netdev_event_to_string(event), | |
279 | &us_ibdev->ufdev->inaddr); | |
280 | ib_event.event = IB_EVENT_GID_CHANGE; | |
281 | ib_event.device = &us_ibdev->ib_dev; | |
282 | ib_event.element.port_num = 1; | |
283 | ib_dispatch_event(&ib_event); | |
284 | break; | |
285 | default: | |
c30392ab | 286 | usnic_info("Ignoring event %s on %s", |
c7845bca UM |
287 | usnic_ib_netdev_event_to_string(event), |
288 | us_ibdev->ib_dev.name); | |
289 | } | |
290 | mutex_unlock(&us_ibdev->usdev_lock); | |
291 | ||
292 | return NOTIFY_DONE; | |
293 | } | |
294 | ||
295 | static int usnic_ib_inetaddr_event(struct notifier_block *notifier, | |
296 | unsigned long event, void *ptr) | |
297 | { | |
298 | struct usnic_ib_dev *us_ibdev; | |
299 | struct in_ifaddr *ifa = ptr; | |
300 | struct net_device *netdev = ifa->ifa_dev->dev; | |
301 | ||
302 | mutex_lock(&usnic_ib_ibdev_list_lock); | |
303 | list_for_each_entry(us_ibdev, &usnic_ib_ibdev_list, ib_dev_link) { | |
304 | if (us_ibdev->netdev == netdev) { | |
305 | usnic_ib_handle_inet_event(us_ibdev, event, ptr); | |
306 | break; | |
307 | } | |
308 | } | |
309 | mutex_unlock(&usnic_ib_ibdev_list_lock); | |
310 | ||
311 | return NOTIFY_DONE; | |
312 | } | |
313 | static struct notifier_block usnic_ib_inetaddr_notifier = { | |
314 | .notifier_call = usnic_ib_inetaddr_event | |
315 | }; | |
316 | /* End of inet section*/ | |
317 | ||
7738613e IW |
318 | static int usnic_port_immutable(struct ib_device *ibdev, u8 port_num, |
319 | struct ib_port_immutable *immutable) | |
320 | { | |
321 | struct ib_port_attr attr; | |
322 | int err; | |
323 | ||
324 | err = usnic_ib_query_port(ibdev, port_num, &attr); | |
325 | if (err) | |
326 | return err; | |
327 | ||
328 | immutable->pkey_tbl_len = attr.pkey_tbl_len; | |
329 | immutable->gid_tbl_len = attr.gid_tbl_len; | |
330 | ||
331 | return 0; | |
332 | } | |
333 | ||
e3cf00d0 UM |
334 | /* Start of PF discovery section */ |
335 | static void *usnic_ib_device_add(struct pci_dev *dev) | |
336 | { | |
337 | struct usnic_ib_dev *us_ibdev; | |
338 | union ib_gid gid; | |
c7845bca UM |
339 | struct in_ifaddr *in; |
340 | struct net_device *netdev; | |
e3cf00d0 UM |
341 | |
342 | usnic_dbg("\n"); | |
c7845bca | 343 | netdev = pci_get_drvdata(dev); |
e3cf00d0 UM |
344 | |
345 | us_ibdev = (struct usnic_ib_dev *)ib_alloc_device(sizeof(*us_ibdev)); | |
2c79dad8 | 346 | if (!us_ibdev) { |
e3cf00d0 UM |
347 | usnic_err("Device %s context alloc failed\n", |
348 | netdev_name(pci_get_drvdata(dev))); | |
2c79dad8 | 349 | return ERR_PTR(-EFAULT); |
e3cf00d0 UM |
350 | } |
351 | ||
352 | us_ibdev->ufdev = usnic_fwd_dev_alloc(dev); | |
2c79dad8 IY |
353 | if (!us_ibdev->ufdev) { |
354 | usnic_err("Failed to alloc ufdev for %s\n", pci_name(dev)); | |
e3cf00d0 UM |
355 | goto err_dealloc; |
356 | } | |
357 | ||
358 | mutex_init(&us_ibdev->usdev_lock); | |
359 | INIT_LIST_HEAD(&us_ibdev->vf_dev_list); | |
360 | INIT_LIST_HEAD(&us_ibdev->ctx_list); | |
361 | ||
362 | us_ibdev->pdev = dev; | |
363 | us_ibdev->netdev = pci_get_drvdata(dev); | |
364 | us_ibdev->ib_dev.owner = THIS_MODULE; | |
61f78268 | 365 | us_ibdev->ib_dev.node_type = RDMA_NODE_USNIC_UDP; |
e3cf00d0 UM |
366 | us_ibdev->ib_dev.phys_port_cnt = USNIC_IB_PORT_CNT; |
367 | us_ibdev->ib_dev.num_comp_vectors = USNIC_IB_NUM_COMP_VECTORS; | |
368 | us_ibdev->ib_dev.dma_device = &dev->dev; | |
369 | us_ibdev->ib_dev.uverbs_abi_ver = USNIC_UVERBS_ABI_VERSION; | |
370 | strlcpy(us_ibdev->ib_dev.name, "usnic_%d", IB_DEVICE_NAME_MAX); | |
371 | ||
372 | us_ibdev->ib_dev.uverbs_cmd_mask = | |
373 | (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | | |
374 | (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | | |
375 | (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | | |
376 | (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | | |
377 | (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | | |
378 | (1ull << IB_USER_VERBS_CMD_REG_MR) | | |
379 | (1ull << IB_USER_VERBS_CMD_DEREG_MR) | | |
380 | (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | | |
381 | (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | | |
382 | (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | | |
383 | (1ull << IB_USER_VERBS_CMD_CREATE_QP) | | |
384 | (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | | |
385 | (1ull << IB_USER_VERBS_CMD_QUERY_QP) | | |
386 | (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | | |
387 | (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | | |
388 | (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | | |
389 | (1ull << IB_USER_VERBS_CMD_OPEN_QP); | |
390 | ||
391 | us_ibdev->ib_dev.query_device = usnic_ib_query_device; | |
392 | us_ibdev->ib_dev.query_port = usnic_ib_query_port; | |
393 | us_ibdev->ib_dev.query_pkey = usnic_ib_query_pkey; | |
394 | us_ibdev->ib_dev.query_gid = usnic_ib_query_gid; | |
395 | us_ibdev->ib_dev.get_link_layer = usnic_ib_port_link_layer; | |
396 | us_ibdev->ib_dev.alloc_pd = usnic_ib_alloc_pd; | |
397 | us_ibdev->ib_dev.dealloc_pd = usnic_ib_dealloc_pd; | |
398 | us_ibdev->ib_dev.create_qp = usnic_ib_create_qp; | |
399 | us_ibdev->ib_dev.modify_qp = usnic_ib_modify_qp; | |
400 | us_ibdev->ib_dev.query_qp = usnic_ib_query_qp; | |
401 | us_ibdev->ib_dev.destroy_qp = usnic_ib_destroy_qp; | |
402 | us_ibdev->ib_dev.create_cq = usnic_ib_create_cq; | |
403 | us_ibdev->ib_dev.destroy_cq = usnic_ib_destroy_cq; | |
404 | us_ibdev->ib_dev.reg_user_mr = usnic_ib_reg_mr; | |
405 | us_ibdev->ib_dev.dereg_mr = usnic_ib_dereg_mr; | |
406 | us_ibdev->ib_dev.alloc_ucontext = usnic_ib_alloc_ucontext; | |
407 | us_ibdev->ib_dev.dealloc_ucontext = usnic_ib_dealloc_ucontext; | |
408 | us_ibdev->ib_dev.mmap = usnic_ib_mmap; | |
409 | us_ibdev->ib_dev.create_ah = usnic_ib_create_ah; | |
410 | us_ibdev->ib_dev.destroy_ah = usnic_ib_destroy_ah; | |
411 | us_ibdev->ib_dev.post_send = usnic_ib_post_send; | |
412 | us_ibdev->ib_dev.post_recv = usnic_ib_post_recv; | |
413 | us_ibdev->ib_dev.poll_cq = usnic_ib_poll_cq; | |
414 | us_ibdev->ib_dev.req_notify_cq = usnic_ib_req_notify_cq; | |
415 | us_ibdev->ib_dev.get_dma_mr = usnic_ib_get_dma_mr; | |
7738613e | 416 | us_ibdev->ib_dev.get_port_immutable = usnic_port_immutable; |
e3cf00d0 UM |
417 | |
418 | ||
419 | if (ib_register_device(&us_ibdev->ib_dev, NULL)) | |
420 | goto err_fwd_dealloc; | |
421 | ||
8af94ac6 UM |
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 | ||
c7845bca UM |
427 | in = ((struct in_device *)(netdev->ip_ptr))->ifa_list; |
428 | if (in != NULL) | |
429 | usnic_fwd_add_ipaddr(us_ibdev->ufdev, in->ifa_address); | |
430 | ||
431 | usnic_mac_ip_to_gid(us_ibdev->netdev->perm_addr, | |
432 | us_ibdev->ufdev->inaddr, &gid.raw[0]); | |
e3cf00d0 UM |
433 | memcpy(&us_ibdev->ib_dev.node_guid, &gid.global.interface_id, |
434 | sizeof(gid.global.interface_id)); | |
435 | kref_init(&us_ibdev->vf_cnt); | |
436 | ||
437 | usnic_info("Added ibdev: %s netdev: %s with mac %pM Link: %u MTU: %u\n", | |
438 | us_ibdev->ib_dev.name, netdev_name(us_ibdev->netdev), | |
8af94ac6 UM |
439 | us_ibdev->ufdev->mac, us_ibdev->ufdev->link_up, |
440 | us_ibdev->ufdev->mtu); | |
e3cf00d0 UM |
441 | return us_ibdev; |
442 | ||
443 | err_fwd_dealloc: | |
444 | usnic_fwd_dev_free(us_ibdev->ufdev); | |
445 | err_dealloc: | |
446 | usnic_err("failed -- deallocing device\n"); | |
447 | ib_dealloc_device(&us_ibdev->ib_dev); | |
448 | return NULL; | |
449 | } | |
450 | ||
451 | static void usnic_ib_device_remove(struct usnic_ib_dev *us_ibdev) | |
452 | { | |
453 | usnic_info("Unregistering %s\n", us_ibdev->ib_dev.name); | |
454 | usnic_ib_sysfs_unregister_usdev(us_ibdev); | |
455 | usnic_fwd_dev_free(us_ibdev->ufdev); | |
456 | ib_unregister_device(&us_ibdev->ib_dev); | |
457 | ib_dealloc_device(&us_ibdev->ib_dev); | |
458 | } | |
459 | ||
460 | static void usnic_ib_undiscover_pf(struct kref *kref) | |
461 | { | |
462 | struct usnic_ib_dev *us_ibdev, *tmp; | |
463 | struct pci_dev *dev; | |
464 | bool found = false; | |
465 | ||
466 | dev = container_of(kref, struct usnic_ib_dev, vf_cnt)->pdev; | |
467 | mutex_lock(&usnic_ib_ibdev_list_lock); | |
468 | list_for_each_entry_safe(us_ibdev, tmp, | |
469 | &usnic_ib_ibdev_list, ib_dev_link) { | |
470 | if (us_ibdev->pdev == dev) { | |
471 | list_del(&us_ibdev->ib_dev_link); | |
472 | usnic_ib_device_remove(us_ibdev); | |
473 | found = true; | |
474 | break; | |
475 | } | |
476 | } | |
477 | ||
478 | WARN(!found, "Failed to remove PF %s\n", pci_name(dev)); | |
479 | ||
480 | mutex_unlock(&usnic_ib_ibdev_list_lock); | |
481 | } | |
482 | ||
483 | static struct usnic_ib_dev *usnic_ib_discover_pf(struct usnic_vnic *vnic) | |
484 | { | |
485 | struct usnic_ib_dev *us_ibdev; | |
486 | struct pci_dev *parent_pci, *vf_pci; | |
487 | int err; | |
488 | ||
489 | vf_pci = usnic_vnic_get_pdev(vnic); | |
490 | parent_pci = pci_physfn(vf_pci); | |
491 | ||
492 | BUG_ON(!parent_pci); | |
493 | ||
494 | mutex_lock(&usnic_ib_ibdev_list_lock); | |
495 | list_for_each_entry(us_ibdev, &usnic_ib_ibdev_list, ib_dev_link) { | |
496 | if (us_ibdev->pdev == parent_pci) { | |
497 | kref_get(&us_ibdev->vf_cnt); | |
498 | goto out; | |
499 | } | |
500 | } | |
501 | ||
502 | us_ibdev = usnic_ib_device_add(parent_pci); | |
503 | if (IS_ERR_OR_NULL(us_ibdev)) { | |
6a54d9f9 | 504 | us_ibdev = us_ibdev ? us_ibdev : ERR_PTR(-EFAULT); |
e3cf00d0 UM |
505 | goto out; |
506 | } | |
507 | ||
508 | err = usnic_ib_sysfs_register_usdev(us_ibdev); | |
509 | if (err) { | |
510 | usnic_ib_device_remove(us_ibdev); | |
511 | us_ibdev = ERR_PTR(err); | |
512 | goto out; | |
513 | } | |
514 | ||
515 | list_add(&us_ibdev->ib_dev_link, &usnic_ib_ibdev_list); | |
516 | out: | |
517 | mutex_unlock(&usnic_ib_ibdev_list_lock); | |
518 | return us_ibdev; | |
519 | } | |
520 | /* End of PF discovery section */ | |
521 | ||
522 | /* Start of PCI section */ | |
523 | ||
9baa3c34 | 524 | static const struct pci_device_id usnic_ib_pci_ids[] = { |
e3cf00d0 UM |
525 | {PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_VIC_USPACE_NIC)}, |
526 | {0,} | |
527 | }; | |
528 | ||
529 | static int usnic_ib_pci_probe(struct pci_dev *pdev, | |
530 | const struct pci_device_id *id) | |
531 | { | |
532 | int err; | |
533 | struct usnic_ib_dev *pf; | |
534 | struct usnic_ib_vf *vf; | |
535 | enum usnic_vnic_res_type res_type; | |
536 | ||
537 | vf = kzalloc(sizeof(*vf), GFP_KERNEL); | |
538 | if (!vf) | |
539 | return -ENOMEM; | |
540 | ||
541 | err = pci_enable_device(pdev); | |
542 | if (err) { | |
543 | usnic_err("Failed to enable %s with err %d\n", | |
544 | pci_name(pdev), err); | |
545 | goto out_clean_vf; | |
546 | } | |
547 | ||
548 | err = pci_request_regions(pdev, DRV_NAME); | |
549 | if (err) { | |
550 | usnic_err("Failed to request region for %s with err %d\n", | |
551 | pci_name(pdev), err); | |
552 | goto out_disable_device; | |
553 | } | |
554 | ||
555 | pci_set_master(pdev); | |
556 | pci_set_drvdata(pdev, vf); | |
557 | ||
558 | vf->vnic = usnic_vnic_alloc(pdev); | |
559 | if (IS_ERR_OR_NULL(vf->vnic)) { | |
6a54d9f9 | 560 | err = vf->vnic ? PTR_ERR(vf->vnic) : -ENOMEM; |
e3cf00d0 UM |
561 | usnic_err("Failed to alloc vnic for %s with err %d\n", |
562 | pci_name(pdev), err); | |
563 | goto out_release_regions; | |
564 | } | |
565 | ||
566 | pf = usnic_ib_discover_pf(vf->vnic); | |
567 | if (IS_ERR_OR_NULL(pf)) { | |
568 | usnic_err("Failed to discover pf of vnic %s with err%ld\n", | |
569 | pci_name(pdev), PTR_ERR(pf)); | |
6a54d9f9 | 570 | err = pf ? PTR_ERR(pf) : -EFAULT; |
e3cf00d0 UM |
571 | goto out_clean_vnic; |
572 | } | |
573 | ||
574 | vf->pf = pf; | |
575 | spin_lock_init(&vf->lock); | |
576 | mutex_lock(&pf->usdev_lock); | |
577 | list_add_tail(&vf->link, &pf->vf_dev_list); | |
578 | /* | |
579 | * Save max settings (will be same for each VF, easier to re-write than | |
580 | * to say "if (!set) { set_values(); set=1; } | |
581 | */ | |
582 | for (res_type = USNIC_VNIC_RES_TYPE_EOL+1; | |
583 | res_type < USNIC_VNIC_RES_TYPE_MAX; | |
584 | res_type++) { | |
585 | pf->vf_res_cnt[res_type] = usnic_vnic_res_cnt(vf->vnic, | |
586 | res_type); | |
587 | } | |
588 | ||
589 | mutex_unlock(&pf->usdev_lock); | |
590 | ||
591 | usnic_info("Registering usnic VF %s into PF %s\n", pci_name(pdev), | |
592 | pf->ib_dev.name); | |
593 | usnic_ib_log_vf(vf); | |
594 | return 0; | |
595 | ||
596 | out_clean_vnic: | |
597 | usnic_vnic_free(vf->vnic); | |
598 | out_release_regions: | |
599 | pci_set_drvdata(pdev, NULL); | |
600 | pci_clear_master(pdev); | |
601 | pci_release_regions(pdev); | |
602 | out_disable_device: | |
603 | pci_disable_device(pdev); | |
604 | out_clean_vf: | |
605 | kfree(vf); | |
606 | return err; | |
607 | } | |
608 | ||
609 | static void usnic_ib_pci_remove(struct pci_dev *pdev) | |
610 | { | |
611 | struct usnic_ib_vf *vf = pci_get_drvdata(pdev); | |
612 | struct usnic_ib_dev *pf = vf->pf; | |
613 | ||
614 | mutex_lock(&pf->usdev_lock); | |
615 | list_del(&vf->link); | |
616 | mutex_unlock(&pf->usdev_lock); | |
617 | ||
618 | kref_put(&pf->vf_cnt, usnic_ib_undiscover_pf); | |
619 | usnic_vnic_free(vf->vnic); | |
620 | pci_set_drvdata(pdev, NULL); | |
621 | pci_clear_master(pdev); | |
622 | pci_release_regions(pdev); | |
623 | pci_disable_device(pdev); | |
624 | kfree(vf); | |
625 | ||
626 | usnic_info("Removed VF %s\n", pci_name(pdev)); | |
627 | } | |
628 | ||
629 | /* PCI driver entry points */ | |
630 | static struct pci_driver usnic_ib_pci_driver = { | |
631 | .name = DRV_NAME, | |
632 | .id_table = usnic_ib_pci_ids, | |
633 | .probe = usnic_ib_pci_probe, | |
634 | .remove = usnic_ib_pci_remove, | |
635 | }; | |
636 | /* End of PCI section */ | |
637 | ||
638 | /* Start of module section */ | |
639 | static int __init usnic_ib_init(void) | |
640 | { | |
641 | int err; | |
642 | ||
643 | printk_once(KERN_INFO "%s", usnic_version); | |
644 | ||
645 | err = usnic_uiom_init(DRV_NAME); | |
646 | if (err) { | |
647 | usnic_err("Unable to initalize umem with err %d\n", err); | |
648 | return err; | |
649 | } | |
650 | ||
651 | if (pci_register_driver(&usnic_ib_pci_driver)) { | |
652 | usnic_err("Unable to register with PCI\n"); | |
653 | goto out_umem_fini; | |
654 | } | |
655 | ||
656 | err = register_netdevice_notifier(&usnic_ib_netdevice_notifier); | |
657 | if (err) { | |
658 | usnic_err("Failed to register netdev notifier\n"); | |
659 | goto out_pci_unreg; | |
660 | } | |
661 | ||
c7845bca UM |
662 | err = register_inetaddr_notifier(&usnic_ib_inetaddr_notifier); |
663 | if (err) { | |
664 | usnic_err("Failed to register inet addr notifier\n"); | |
665 | goto out_unreg_netdev_notifier; | |
666 | } | |
667 | ||
e3cf00d0 UM |
668 | err = usnic_transport_init(); |
669 | if (err) { | |
670 | usnic_err("Failed to initialize transport\n"); | |
c7845bca | 671 | goto out_unreg_inetaddr_notifier; |
e3cf00d0 UM |
672 | } |
673 | ||
674 | usnic_debugfs_init(); | |
675 | ||
676 | return 0; | |
677 | ||
c7845bca UM |
678 | out_unreg_inetaddr_notifier: |
679 | unregister_inetaddr_notifier(&usnic_ib_inetaddr_notifier); | |
e3cf00d0 UM |
680 | out_unreg_netdev_notifier: |
681 | unregister_netdevice_notifier(&usnic_ib_netdevice_notifier); | |
682 | out_pci_unreg: | |
683 | pci_unregister_driver(&usnic_ib_pci_driver); | |
684 | out_umem_fini: | |
685 | usnic_uiom_fini(); | |
686 | ||
687 | return err; | |
688 | } | |
689 | ||
690 | static void __exit usnic_ib_destroy(void) | |
691 | { | |
692 | usnic_dbg("\n"); | |
693 | usnic_debugfs_exit(); | |
694 | usnic_transport_fini(); | |
c7845bca | 695 | unregister_inetaddr_notifier(&usnic_ib_inetaddr_notifier); |
e3cf00d0 UM |
696 | unregister_netdevice_notifier(&usnic_ib_netdevice_notifier); |
697 | pci_unregister_driver(&usnic_ib_pci_driver); | |
698 | usnic_uiom_fini(); | |
699 | } | |
700 | ||
701 | MODULE_DESCRIPTION("Cisco VIC (usNIC) Verbs Driver"); | |
702 | MODULE_AUTHOR("Upinder Malhi <umalhi@cisco.com>"); | |
703 | MODULE_LICENSE("Dual BSD/GPL"); | |
704 | MODULE_VERSION(DRV_VERSION); | |
705 | module_param(usnic_log_lvl, uint, S_IRUGO | S_IWUSR); | |
706 | module_param(usnic_ib_share_vf, uint, S_IRUGO | S_IWUSR); | |
707 | MODULE_PARM_DESC(usnic_log_lvl, " Off=0, Err=1, Info=2, Debug=3"); | |
708 | MODULE_PARM_DESC(usnic_ib_share_vf, "Off=0, On=1 VF sharing amongst QPs"); | |
709 | MODULE_DEVICE_TABLE(pci, usnic_ib_pci_ids); | |
710 | ||
711 | module_init(usnic_ib_init); | |
712 | module_exit(usnic_ib_destroy); | |
713 | /* End of module section */ |