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225c7b1f RD |
1 | /* |
2 | * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved. | |
51a379d0 | 3 | * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved. |
225c7b1f RD |
4 | * |
5 | * This software is available to you under a choice of one of two | |
6 | * licenses. You may choose to be licensed under the terms of the GNU | |
7 | * General Public License (GPL) Version 2, available from the file | |
8 | * COPYING in the main directory of this source tree, or the | |
9 | * OpenIB.org BSD license below: | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or | |
12 | * without modification, are permitted provided that the following | |
13 | * conditions are met: | |
14 | * | |
15 | * - Redistributions of source code must retain the above | |
16 | * copyright notice, this list of conditions and the following | |
17 | * disclaimer. | |
18 | * | |
19 | * - Redistributions in binary form must reproduce the above | |
20 | * copyright notice, this list of conditions and the following | |
21 | * disclaimer in the documentation and/or other materials | |
22 | * provided with the distribution. | |
23 | * | |
24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
25 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
26 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
27 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
28 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
29 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
30 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
31 | * SOFTWARE. | |
32 | */ | |
33 | ||
34 | #include <linux/module.h> | |
35 | #include <linux/init.h> | |
5a0e3ad6 | 36 | #include <linux/slab.h> |
225c7b1f | 37 | #include <linux/errno.h> |
fa417f7b EC |
38 | #include <linux/netdevice.h> |
39 | #include <linux/inetdevice.h> | |
40 | #include <linux/rtnetlink.h> | |
4c3eb3ca | 41 | #include <linux/if_vlan.h> |
225c7b1f RD |
42 | |
43 | #include <rdma/ib_smi.h> | |
44 | #include <rdma/ib_user_verbs.h> | |
fa417f7b | 45 | #include <rdma/ib_addr.h> |
225c7b1f RD |
46 | |
47 | #include <linux/mlx4/driver.h> | |
48 | #include <linux/mlx4/cmd.h> | |
49 | ||
50 | #include "mlx4_ib.h" | |
51 | #include "user.h" | |
52 | ||
53 | #define DRV_NAME "mlx4_ib" | |
068c4ea1 JM |
54 | #define DRV_VERSION "1.0" |
55 | #define DRV_RELDATE "April 4, 2008" | |
225c7b1f RD |
56 | |
57 | MODULE_AUTHOR("Roland Dreier"); | |
58 | MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver"); | |
59 | MODULE_LICENSE("Dual BSD/GPL"); | |
60 | MODULE_VERSION(DRV_VERSION); | |
61 | ||
68f3948d | 62 | static const char mlx4_ib_version[] = |
225c7b1f RD |
63 | DRV_NAME ": Mellanox ConnectX InfiniBand driver v" |
64 | DRV_VERSION " (" DRV_RELDATE ")\n"; | |
65 | ||
fa417f7b EC |
66 | struct update_gid_work { |
67 | struct work_struct work; | |
68 | union ib_gid gids[128]; | |
69 | struct mlx4_ib_dev *dev; | |
70 | int port; | |
71 | }; | |
72 | ||
73 | static struct workqueue_struct *wq; | |
74 | ||
225c7b1f RD |
75 | static void init_query_mad(struct ib_smp *mad) |
76 | { | |
77 | mad->base_version = 1; | |
78 | mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; | |
79 | mad->class_version = 1; | |
80 | mad->method = IB_MGMT_METHOD_GET; | |
81 | } | |
82 | ||
4c3eb3ca EC |
83 | static union ib_gid zgid; |
84 | ||
225c7b1f RD |
85 | static int mlx4_ib_query_device(struct ib_device *ibdev, |
86 | struct ib_device_attr *props) | |
87 | { | |
88 | struct mlx4_ib_dev *dev = to_mdev(ibdev); | |
89 | struct ib_smp *in_mad = NULL; | |
90 | struct ib_smp *out_mad = NULL; | |
91 | int err = -ENOMEM; | |
92 | ||
93 | in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); | |
94 | out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); | |
95 | if (!in_mad || !out_mad) | |
96 | goto out; | |
97 | ||
98 | init_query_mad(in_mad); | |
99 | in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; | |
100 | ||
101 | err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad); | |
102 | if (err) | |
103 | goto out; | |
104 | ||
105 | memset(props, 0, sizeof *props); | |
106 | ||
107 | props->fw_ver = dev->dev->caps.fw_ver; | |
108 | props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | | |
109 | IB_DEVICE_PORT_ACTIVE_EVENT | | |
110 | IB_DEVICE_SYS_IMAGE_GUID | | |
521e575b RL |
111 | IB_DEVICE_RC_RNR_NAK_GEN | |
112 | IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; | |
225c7b1f RD |
113 | if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR) |
114 | props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; | |
115 | if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR) | |
116 | props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; | |
117 | if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM) | |
118 | props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; | |
119 | if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT) | |
120 | props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE; | |
8ff095ec EC |
121 | if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM) |
122 | props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; | |
417608c2 | 123 | if (dev->dev->caps.max_gso_sz && dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH) |
b832be1e | 124 | props->device_cap_flags |= IB_DEVICE_UD_TSO; |
95d04f07 RD |
125 | if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY) |
126 | props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY; | |
127 | if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) && | |
128 | (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) && | |
129 | (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR)) | |
130 | props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; | |
0a1405da SH |
131 | if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) |
132 | props->device_cap_flags |= IB_DEVICE_XRC; | |
225c7b1f RD |
133 | |
134 | props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) & | |
135 | 0xffffff; | |
136 | props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30)); | |
137 | props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32)); | |
138 | memcpy(&props->sys_image_guid, out_mad->data + 4, 8); | |
139 | ||
140 | props->max_mr_size = ~0ull; | |
141 | props->page_size_cap = dev->dev->caps.page_size_cap; | |
142 | props->max_qp = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps; | |
143 | props->max_qp_wr = dev->dev->caps.max_wqes; | |
144 | props->max_sge = min(dev->dev->caps.max_sq_sg, | |
145 | dev->dev->caps.max_rq_sg); | |
146 | props->max_cq = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs; | |
147 | props->max_cqe = dev->dev->caps.max_cqes; | |
148 | props->max_mr = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws; | |
149 | props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds; | |
150 | props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma; | |
151 | props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma; | |
152 | props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; | |
153 | props->max_srq = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs; | |
c8681f14 | 154 | props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1; |
225c7b1f | 155 | props->max_srq_sge = dev->dev->caps.max_srq_sge; |
5a0fd094 | 156 | props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES; |
225c7b1f RD |
157 | props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay; |
158 | props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ? | |
159 | IB_ATOMIC_HCA : IB_ATOMIC_NONE; | |
6fa8f719 | 160 | props->masked_atomic_cap = IB_ATOMIC_HCA; |
5ae2a7a8 | 161 | props->max_pkeys = dev->dev->caps.pkey_table_len[1]; |
225c7b1f RD |
162 | props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms; |
163 | props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm; | |
164 | props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * | |
165 | props->max_mcast_grp; | |
a5bbe892 | 166 | props->max_map_per_fmr = dev->dev->caps.max_fmr_maps; |
225c7b1f RD |
167 | |
168 | out: | |
169 | kfree(in_mad); | |
170 | kfree(out_mad); | |
171 | ||
172 | return err; | |
173 | } | |
174 | ||
fa417f7b EC |
175 | static enum rdma_link_layer |
176 | mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num) | |
225c7b1f | 177 | { |
fa417f7b | 178 | struct mlx4_dev *dev = to_mdev(device)->dev; |
225c7b1f | 179 | |
65dab25d | 180 | return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ? |
fa417f7b EC |
181 | IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET; |
182 | } | |
225c7b1f | 183 | |
fa417f7b | 184 | static int ib_link_query_port(struct ib_device *ibdev, u8 port, |
a9c766bb | 185 | struct ib_port_attr *props) |
fa417f7b | 186 | { |
a9c766bb OG |
187 | struct ib_smp *in_mad = NULL; |
188 | struct ib_smp *out_mad = NULL; | |
a5e12dff | 189 | int ext_active_speed; |
a9c766bb OG |
190 | int err = -ENOMEM; |
191 | ||
192 | in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); | |
193 | out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); | |
194 | if (!in_mad || !out_mad) | |
195 | goto out; | |
196 | ||
197 | init_query_mad(in_mad); | |
198 | in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; | |
199 | in_mad->attr_mod = cpu_to_be32(port); | |
200 | ||
201 | err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, | |
202 | in_mad, out_mad); | |
203 | if (err) | |
204 | goto out; | |
205 | ||
a5e12dff | 206 | |
225c7b1f RD |
207 | props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16)); |
208 | props->lmc = out_mad->data[34] & 0x7; | |
209 | props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18)); | |
210 | props->sm_sl = out_mad->data[36] & 0xf; | |
211 | props->state = out_mad->data[32] & 0xf; | |
212 | props->phys_state = out_mad->data[33] >> 4; | |
213 | props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20)); | |
5ae2a7a8 | 214 | props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port]; |
149983af | 215 | props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz; |
5ae2a7a8 | 216 | props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port]; |
225c7b1f RD |
217 | props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46)); |
218 | props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48)); | |
219 | props->active_width = out_mad->data[31] & 0xf; | |
220 | props->active_speed = out_mad->data[35] >> 4; | |
221 | props->max_mtu = out_mad->data[41] & 0xf; | |
222 | props->active_mtu = out_mad->data[36] >> 4; | |
223 | props->subnet_timeout = out_mad->data[51] & 0x1f; | |
224 | props->max_vl_num = out_mad->data[37] >> 4; | |
225 | props->init_type_reply = out_mad->data[41] >> 4; | |
226 | ||
a5e12dff MA |
227 | /* Check if extended speeds (EDR/FDR/...) are supported */ |
228 | if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) { | |
229 | ext_active_speed = out_mad->data[62] >> 4; | |
230 | ||
231 | switch (ext_active_speed) { | |
232 | case 1: | |
2e96691c | 233 | props->active_speed = IB_SPEED_FDR; |
a5e12dff MA |
234 | break; |
235 | case 2: | |
2e96691c | 236 | props->active_speed = IB_SPEED_EDR; |
a5e12dff MA |
237 | break; |
238 | } | |
239 | } | |
240 | ||
241 | /* If reported active speed is QDR, check if is FDR-10 */ | |
2e96691c | 242 | if (props->active_speed == IB_SPEED_QDR) { |
8154c07f OG |
243 | init_query_mad(in_mad); |
244 | in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO; | |
245 | in_mad->attr_mod = cpu_to_be32(port); | |
246 | ||
247 | err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, | |
248 | NULL, NULL, in_mad, out_mad); | |
249 | if (err) | |
250 | return err; | |
251 | ||
252 | /* Checking LinkSpeedActive for FDR-10 */ | |
253 | if (out_mad->data[15] & 0x1) | |
254 | props->active_speed = IB_SPEED_FDR10; | |
a5e12dff | 255 | } |
a9c766bb OG |
256 | out: |
257 | kfree(in_mad); | |
258 | kfree(out_mad); | |
259 | return err; | |
fa417f7b EC |
260 | } |
261 | ||
262 | static u8 state_to_phys_state(enum ib_port_state state) | |
263 | { | |
264 | return state == IB_PORT_ACTIVE ? 5 : 3; | |
265 | } | |
266 | ||
267 | static int eth_link_query_port(struct ib_device *ibdev, u8 port, | |
a9c766bb | 268 | struct ib_port_attr *props) |
fa417f7b | 269 | { |
a9c766bb OG |
270 | |
271 | struct mlx4_ib_dev *mdev = to_mdev(ibdev); | |
272 | struct mlx4_ib_iboe *iboe = &mdev->iboe; | |
fa417f7b EC |
273 | struct net_device *ndev; |
274 | enum ib_mtu tmp; | |
a9c766bb OG |
275 | struct mlx4_cmd_mailbox *mailbox; |
276 | int err = 0; | |
277 | ||
278 | mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); | |
279 | if (IS_ERR(mailbox)) | |
280 | return PTR_ERR(mailbox); | |
fa417f7b | 281 | |
a9c766bb OG |
282 | err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0, |
283 | MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B, | |
284 | MLX4_CMD_WRAPPED); | |
285 | if (err) | |
286 | goto out; | |
287 | ||
288 | props->active_width = (((u8 *)mailbox->buf)[5] == 0x40) ? | |
289 | IB_WIDTH_4X : IB_WIDTH_1X; | |
2e96691c | 290 | props->active_speed = IB_SPEED_QDR; |
fa417f7b | 291 | props->port_cap_flags = IB_PORT_CM_SUP; |
a9c766bb OG |
292 | props->gid_tbl_len = mdev->dev->caps.gid_table_len[port]; |
293 | props->max_msg_sz = mdev->dev->caps.max_msg_sz; | |
fa417f7b | 294 | props->pkey_tbl_len = 1; |
bcacb897 | 295 | props->max_mtu = IB_MTU_4096; |
a9c766bb | 296 | props->max_vl_num = 2; |
fa417f7b EC |
297 | props->state = IB_PORT_DOWN; |
298 | props->phys_state = state_to_phys_state(props->state); | |
299 | props->active_mtu = IB_MTU_256; | |
300 | spin_lock(&iboe->lock); | |
301 | ndev = iboe->netdevs[port - 1]; | |
302 | if (!ndev) | |
a9c766bb | 303 | goto out_unlock; |
fa417f7b EC |
304 | |
305 | tmp = iboe_get_mtu(ndev->mtu); | |
306 | props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256; | |
307 | ||
21d60609 | 308 | props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ? |
fa417f7b EC |
309 | IB_PORT_ACTIVE : IB_PORT_DOWN; |
310 | props->phys_state = state_to_phys_state(props->state); | |
a9c766bb | 311 | out_unlock: |
fa417f7b | 312 | spin_unlock(&iboe->lock); |
a9c766bb OG |
313 | out: |
314 | mlx4_free_cmd_mailbox(mdev->dev, mailbox); | |
315 | return err; | |
fa417f7b EC |
316 | } |
317 | ||
318 | static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port, | |
319 | struct ib_port_attr *props) | |
320 | { | |
a9c766bb | 321 | int err; |
fa417f7b EC |
322 | |
323 | memset(props, 0, sizeof *props); | |
324 | ||
fa417f7b | 325 | err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ? |
a9c766bb OG |
326 | ib_link_query_port(ibdev, port, props) : |
327 | eth_link_query_port(ibdev, port, props); | |
225c7b1f RD |
328 | |
329 | return err; | |
330 | } | |
331 | ||
fa417f7b EC |
332 | static int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, |
333 | union ib_gid *gid) | |
225c7b1f RD |
334 | { |
335 | struct ib_smp *in_mad = NULL; | |
336 | struct ib_smp *out_mad = NULL; | |
337 | int err = -ENOMEM; | |
338 | ||
339 | in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); | |
340 | out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); | |
341 | if (!in_mad || !out_mad) | |
342 | goto out; | |
343 | ||
344 | init_query_mad(in_mad); | |
345 | in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; | |
346 | in_mad->attr_mod = cpu_to_be32(port); | |
347 | ||
348 | err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); | |
349 | if (err) | |
350 | goto out; | |
351 | ||
352 | memcpy(gid->raw, out_mad->data + 8, 8); | |
353 | ||
354 | init_query_mad(in_mad); | |
355 | in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; | |
356 | in_mad->attr_mod = cpu_to_be32(index / 8); | |
357 | ||
358 | err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); | |
359 | if (err) | |
360 | goto out; | |
361 | ||
362 | memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); | |
363 | ||
364 | out: | |
365 | kfree(in_mad); | |
366 | kfree(out_mad); | |
367 | return err; | |
368 | } | |
369 | ||
fa417f7b EC |
370 | static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index, |
371 | union ib_gid *gid) | |
372 | { | |
373 | struct mlx4_ib_dev *dev = to_mdev(ibdev); | |
374 | ||
375 | *gid = dev->iboe.gid_table[port - 1][index]; | |
376 | ||
377 | return 0; | |
378 | } | |
379 | ||
380 | static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, | |
381 | union ib_gid *gid) | |
382 | { | |
383 | if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND) | |
384 | return __mlx4_ib_query_gid(ibdev, port, index, gid); | |
385 | else | |
386 | return iboe_query_gid(ibdev, port, index, gid); | |
387 | } | |
388 | ||
225c7b1f RD |
389 | static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, |
390 | u16 *pkey) | |
391 | { | |
392 | struct ib_smp *in_mad = NULL; | |
393 | struct ib_smp *out_mad = NULL; | |
394 | int err = -ENOMEM; | |
395 | ||
396 | in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); | |
397 | out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); | |
398 | if (!in_mad || !out_mad) | |
399 | goto out; | |
400 | ||
401 | init_query_mad(in_mad); | |
402 | in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; | |
403 | in_mad->attr_mod = cpu_to_be32(index / 32); | |
404 | ||
405 | err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); | |
406 | if (err) | |
407 | goto out; | |
408 | ||
409 | *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]); | |
410 | ||
411 | out: | |
412 | kfree(in_mad); | |
413 | kfree(out_mad); | |
414 | return err; | |
415 | } | |
416 | ||
417 | static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask, | |
418 | struct ib_device_modify *props) | |
419 | { | |
d0d68b86 JM |
420 | struct mlx4_cmd_mailbox *mailbox; |
421 | ||
225c7b1f RD |
422 | if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) |
423 | return -EOPNOTSUPP; | |
424 | ||
d0d68b86 JM |
425 | if (!(mask & IB_DEVICE_MODIFY_NODE_DESC)) |
426 | return 0; | |
427 | ||
428 | spin_lock(&to_mdev(ibdev)->sm_lock); | |
429 | memcpy(ibdev->node_desc, props->node_desc, 64); | |
430 | spin_unlock(&to_mdev(ibdev)->sm_lock); | |
431 | ||
432 | /* | |
433 | * If possible, pass node desc to FW, so it can generate | |
434 | * a 144 trap. If cmd fails, just ignore. | |
435 | */ | |
436 | mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev); | |
437 | if (IS_ERR(mailbox)) | |
438 | return 0; | |
439 | ||
440 | memset(mailbox->buf, 0, 256); | |
441 | memcpy(mailbox->buf, props->node_desc, 64); | |
442 | mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0, | |
f9baff50 | 443 | MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); |
d0d68b86 JM |
444 | |
445 | mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox); | |
225c7b1f RD |
446 | |
447 | return 0; | |
448 | } | |
449 | ||
450 | static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols, | |
451 | u32 cap_mask) | |
452 | { | |
453 | struct mlx4_cmd_mailbox *mailbox; | |
454 | int err; | |
fa417f7b | 455 | u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH; |
225c7b1f RD |
456 | |
457 | mailbox = mlx4_alloc_cmd_mailbox(dev->dev); | |
458 | if (IS_ERR(mailbox)) | |
459 | return PTR_ERR(mailbox); | |
460 | ||
461 | memset(mailbox->buf, 0, 256); | |
5ae2a7a8 RD |
462 | |
463 | if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) { | |
464 | *(u8 *) mailbox->buf = !!reset_qkey_viols << 6; | |
465 | ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask); | |
466 | } else { | |
467 | ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols; | |
468 | ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask); | |
469 | } | |
225c7b1f | 470 | |
fa417f7b | 471 | err = mlx4_cmd(dev->dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT, |
f9baff50 | 472 | MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE); |
225c7b1f RD |
473 | |
474 | mlx4_free_cmd_mailbox(dev->dev, mailbox); | |
475 | return err; | |
476 | } | |
477 | ||
478 | static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, | |
479 | struct ib_port_modify *props) | |
480 | { | |
481 | struct ib_port_attr attr; | |
482 | u32 cap_mask; | |
483 | int err; | |
484 | ||
485 | mutex_lock(&to_mdev(ibdev)->cap_mask_mutex); | |
486 | ||
487 | err = mlx4_ib_query_port(ibdev, port, &attr); | |
488 | if (err) | |
489 | goto out; | |
490 | ||
491 | cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & | |
492 | ~props->clr_port_cap_mask; | |
493 | ||
494 | err = mlx4_SET_PORT(to_mdev(ibdev), port, | |
495 | !!(mask & IB_PORT_RESET_QKEY_CNTR), | |
496 | cap_mask); | |
497 | ||
498 | out: | |
499 | mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); | |
500 | return err; | |
501 | } | |
502 | ||
503 | static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev, | |
504 | struct ib_udata *udata) | |
505 | { | |
506 | struct mlx4_ib_dev *dev = to_mdev(ibdev); | |
507 | struct mlx4_ib_ucontext *context; | |
508 | struct mlx4_ib_alloc_ucontext_resp resp; | |
509 | int err; | |
510 | ||
3b4a8cd5 JM |
511 | if (!dev->ib_active) |
512 | return ERR_PTR(-EAGAIN); | |
513 | ||
225c7b1f RD |
514 | resp.qp_tab_size = dev->dev->caps.num_qps; |
515 | resp.bf_reg_size = dev->dev->caps.bf_reg_size; | |
516 | resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; | |
517 | ||
518 | context = kmalloc(sizeof *context, GFP_KERNEL); | |
519 | if (!context) | |
520 | return ERR_PTR(-ENOMEM); | |
521 | ||
522 | err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar); | |
523 | if (err) { | |
524 | kfree(context); | |
525 | return ERR_PTR(err); | |
526 | } | |
527 | ||
528 | INIT_LIST_HEAD(&context->db_page_list); | |
529 | mutex_init(&context->db_page_mutex); | |
530 | ||
531 | err = ib_copy_to_udata(udata, &resp, sizeof resp); | |
532 | if (err) { | |
533 | mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar); | |
534 | kfree(context); | |
535 | return ERR_PTR(-EFAULT); | |
536 | } | |
537 | ||
538 | return &context->ibucontext; | |
539 | } | |
540 | ||
541 | static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) | |
542 | { | |
543 | struct mlx4_ib_ucontext *context = to_mucontext(ibcontext); | |
544 | ||
545 | mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar); | |
546 | kfree(context); | |
547 | ||
548 | return 0; | |
549 | } | |
550 | ||
551 | static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) | |
552 | { | |
553 | struct mlx4_ib_dev *dev = to_mdev(context->device); | |
554 | ||
555 | if (vma->vm_end - vma->vm_start != PAGE_SIZE) | |
556 | return -EINVAL; | |
557 | ||
558 | if (vma->vm_pgoff == 0) { | |
559 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); | |
560 | ||
561 | if (io_remap_pfn_range(vma, vma->vm_start, | |
562 | to_mucontext(context)->uar.pfn, | |
563 | PAGE_SIZE, vma->vm_page_prot)) | |
564 | return -EAGAIN; | |
565 | } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) { | |
e1d60ec6 | 566 | vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); |
225c7b1f RD |
567 | |
568 | if (io_remap_pfn_range(vma, vma->vm_start, | |
569 | to_mucontext(context)->uar.pfn + | |
570 | dev->dev->caps.num_uars, | |
571 | PAGE_SIZE, vma->vm_page_prot)) | |
572 | return -EAGAIN; | |
573 | } else | |
574 | return -EINVAL; | |
575 | ||
576 | return 0; | |
577 | } | |
578 | ||
579 | static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev, | |
580 | struct ib_ucontext *context, | |
581 | struct ib_udata *udata) | |
582 | { | |
583 | struct mlx4_ib_pd *pd; | |
584 | int err; | |
585 | ||
586 | pd = kmalloc(sizeof *pd, GFP_KERNEL); | |
587 | if (!pd) | |
588 | return ERR_PTR(-ENOMEM); | |
589 | ||
590 | err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn); | |
591 | if (err) { | |
592 | kfree(pd); | |
593 | return ERR_PTR(err); | |
594 | } | |
595 | ||
596 | if (context) | |
597 | if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) { | |
598 | mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn); | |
599 | kfree(pd); | |
600 | return ERR_PTR(-EFAULT); | |
601 | } | |
602 | ||
603 | return &pd->ibpd; | |
604 | } | |
605 | ||
606 | static int mlx4_ib_dealloc_pd(struct ib_pd *pd) | |
607 | { | |
608 | mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn); | |
609 | kfree(pd); | |
610 | ||
611 | return 0; | |
612 | } | |
613 | ||
012a8ff5 SH |
614 | static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev, |
615 | struct ib_ucontext *context, | |
616 | struct ib_udata *udata) | |
617 | { | |
618 | struct mlx4_ib_xrcd *xrcd; | |
619 | int err; | |
620 | ||
621 | if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)) | |
622 | return ERR_PTR(-ENOSYS); | |
623 | ||
624 | xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL); | |
625 | if (!xrcd) | |
626 | return ERR_PTR(-ENOMEM); | |
627 | ||
628 | err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn); | |
629 | if (err) | |
630 | goto err1; | |
631 | ||
632 | xrcd->pd = ib_alloc_pd(ibdev); | |
633 | if (IS_ERR(xrcd->pd)) { | |
634 | err = PTR_ERR(xrcd->pd); | |
635 | goto err2; | |
636 | } | |
637 | ||
638 | xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0); | |
639 | if (IS_ERR(xrcd->cq)) { | |
640 | err = PTR_ERR(xrcd->cq); | |
641 | goto err3; | |
642 | } | |
643 | ||
644 | return &xrcd->ibxrcd; | |
645 | ||
646 | err3: | |
647 | ib_dealloc_pd(xrcd->pd); | |
648 | err2: | |
649 | mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn); | |
650 | err1: | |
651 | kfree(xrcd); | |
652 | return ERR_PTR(err); | |
653 | } | |
654 | ||
655 | static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd) | |
656 | { | |
657 | ib_destroy_cq(to_mxrcd(xrcd)->cq); | |
658 | ib_dealloc_pd(to_mxrcd(xrcd)->pd); | |
659 | mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn); | |
660 | kfree(xrcd); | |
661 | ||
662 | return 0; | |
663 | } | |
664 | ||
fa417f7b EC |
665 | static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid) |
666 | { | |
667 | struct mlx4_ib_qp *mqp = to_mqp(ibqp); | |
668 | struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); | |
669 | struct mlx4_ib_gid_entry *ge; | |
670 | ||
671 | ge = kzalloc(sizeof *ge, GFP_KERNEL); | |
672 | if (!ge) | |
673 | return -ENOMEM; | |
674 | ||
675 | ge->gid = *gid; | |
676 | if (mlx4_ib_add_mc(mdev, mqp, gid)) { | |
677 | ge->port = mqp->port; | |
678 | ge->added = 1; | |
679 | } | |
680 | ||
681 | mutex_lock(&mqp->mutex); | |
682 | list_add_tail(&ge->list, &mqp->gid_list); | |
683 | mutex_unlock(&mqp->mutex); | |
684 | ||
685 | return 0; | |
686 | } | |
687 | ||
688 | int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, | |
689 | union ib_gid *gid) | |
690 | { | |
691 | u8 mac[6]; | |
692 | struct net_device *ndev; | |
693 | int ret = 0; | |
694 | ||
695 | if (!mqp->port) | |
696 | return 0; | |
697 | ||
698 | spin_lock(&mdev->iboe.lock); | |
699 | ndev = mdev->iboe.netdevs[mqp->port - 1]; | |
700 | if (ndev) | |
701 | dev_hold(ndev); | |
702 | spin_unlock(&mdev->iboe.lock); | |
703 | ||
704 | if (ndev) { | |
705 | rdma_get_mcast_mac((struct in6_addr *)gid, mac); | |
706 | rtnl_lock(); | |
707 | dev_mc_add(mdev->iboe.netdevs[mqp->port - 1], mac); | |
708 | ret = 1; | |
709 | rtnl_unlock(); | |
710 | dev_put(ndev); | |
711 | } | |
712 | ||
713 | return ret; | |
714 | } | |
715 | ||
225c7b1f RD |
716 | static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) |
717 | { | |
fa417f7b EC |
718 | int err; |
719 | struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); | |
720 | struct mlx4_ib_qp *mqp = to_mqp(ibqp); | |
721 | ||
da995a8a AS |
722 | err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, |
723 | !!(mqp->flags & MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), | |
0345584e | 724 | MLX4_PROT_IB_IPV6); |
fa417f7b EC |
725 | if (err) |
726 | return err; | |
727 | ||
728 | err = add_gid_entry(ibqp, gid); | |
729 | if (err) | |
730 | goto err_add; | |
731 | ||
732 | return 0; | |
733 | ||
734 | err_add: | |
0345584e | 735 | mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, MLX4_PROT_IB_IPV6); |
fa417f7b EC |
736 | return err; |
737 | } | |
738 | ||
739 | static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw) | |
740 | { | |
741 | struct mlx4_ib_gid_entry *ge; | |
742 | struct mlx4_ib_gid_entry *tmp; | |
743 | struct mlx4_ib_gid_entry *ret = NULL; | |
744 | ||
745 | list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { | |
746 | if (!memcmp(raw, ge->gid.raw, 16)) { | |
747 | ret = ge; | |
748 | break; | |
749 | } | |
750 | } | |
751 | ||
752 | return ret; | |
225c7b1f RD |
753 | } |
754 | ||
755 | static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) | |
756 | { | |
fa417f7b EC |
757 | int err; |
758 | struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); | |
759 | struct mlx4_ib_qp *mqp = to_mqp(ibqp); | |
760 | u8 mac[6]; | |
761 | struct net_device *ndev; | |
762 | struct mlx4_ib_gid_entry *ge; | |
763 | ||
764 | err = mlx4_multicast_detach(mdev->dev, | |
0345584e | 765 | &mqp->mqp, gid->raw, MLX4_PROT_IB_IPV6); |
fa417f7b EC |
766 | if (err) |
767 | return err; | |
768 | ||
769 | mutex_lock(&mqp->mutex); | |
770 | ge = find_gid_entry(mqp, gid->raw); | |
771 | if (ge) { | |
772 | spin_lock(&mdev->iboe.lock); | |
773 | ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL; | |
774 | if (ndev) | |
775 | dev_hold(ndev); | |
776 | spin_unlock(&mdev->iboe.lock); | |
777 | rdma_get_mcast_mac((struct in6_addr *)gid, mac); | |
778 | if (ndev) { | |
779 | rtnl_lock(); | |
780 | dev_mc_del(mdev->iboe.netdevs[ge->port - 1], mac); | |
781 | rtnl_unlock(); | |
782 | dev_put(ndev); | |
783 | } | |
784 | list_del(&ge->list); | |
785 | kfree(ge); | |
786 | } else | |
787 | printk(KERN_WARNING "could not find mgid entry\n"); | |
788 | ||
789 | mutex_unlock(&mqp->mutex); | |
790 | ||
791 | return 0; | |
225c7b1f RD |
792 | } |
793 | ||
794 | static int init_node_data(struct mlx4_ib_dev *dev) | |
795 | { | |
796 | struct ib_smp *in_mad = NULL; | |
797 | struct ib_smp *out_mad = NULL; | |
798 | int err = -ENOMEM; | |
799 | ||
800 | in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); | |
801 | out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); | |
802 | if (!in_mad || !out_mad) | |
803 | goto out; | |
804 | ||
805 | init_query_mad(in_mad); | |
806 | in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; | |
807 | ||
808 | err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); | |
809 | if (err) | |
810 | goto out; | |
811 | ||
812 | memcpy(dev->ib_dev.node_desc, out_mad->data, 64); | |
813 | ||
814 | in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; | |
815 | ||
816 | err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad); | |
817 | if (err) | |
818 | goto out; | |
819 | ||
820 | memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); | |
821 | ||
822 | out: | |
823 | kfree(in_mad); | |
824 | kfree(out_mad); | |
825 | return err; | |
826 | } | |
827 | ||
f4e91eb4 TJ |
828 | static ssize_t show_hca(struct device *device, struct device_attribute *attr, |
829 | char *buf) | |
cd9281d8 | 830 | { |
f4e91eb4 TJ |
831 | struct mlx4_ib_dev *dev = |
832 | container_of(device, struct mlx4_ib_dev, ib_dev.dev); | |
cd9281d8 JM |
833 | return sprintf(buf, "MT%d\n", dev->dev->pdev->device); |
834 | } | |
835 | ||
f4e91eb4 TJ |
836 | static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, |
837 | char *buf) | |
cd9281d8 | 838 | { |
f4e91eb4 TJ |
839 | struct mlx4_ib_dev *dev = |
840 | container_of(device, struct mlx4_ib_dev, ib_dev.dev); | |
cd9281d8 JM |
841 | return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32), |
842 | (int) (dev->dev->caps.fw_ver >> 16) & 0xffff, | |
843 | (int) dev->dev->caps.fw_ver & 0xffff); | |
844 | } | |
845 | ||
f4e91eb4 TJ |
846 | static ssize_t show_rev(struct device *device, struct device_attribute *attr, |
847 | char *buf) | |
cd9281d8 | 848 | { |
f4e91eb4 TJ |
849 | struct mlx4_ib_dev *dev = |
850 | container_of(device, struct mlx4_ib_dev, ib_dev.dev); | |
cd9281d8 JM |
851 | return sprintf(buf, "%x\n", dev->dev->rev_id); |
852 | } | |
853 | ||
f4e91eb4 TJ |
854 | static ssize_t show_board(struct device *device, struct device_attribute *attr, |
855 | char *buf) | |
cd9281d8 | 856 | { |
f4e91eb4 TJ |
857 | struct mlx4_ib_dev *dev = |
858 | container_of(device, struct mlx4_ib_dev, ib_dev.dev); | |
859 | return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN, | |
860 | dev->dev->board_id); | |
cd9281d8 JM |
861 | } |
862 | ||
f4e91eb4 TJ |
863 | static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); |
864 | static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); | |
865 | static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); | |
866 | static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); | |
cd9281d8 | 867 | |
f4e91eb4 TJ |
868 | static struct device_attribute *mlx4_class_attributes[] = { |
869 | &dev_attr_hw_rev, | |
870 | &dev_attr_fw_ver, | |
871 | &dev_attr_hca_type, | |
872 | &dev_attr_board_id | |
cd9281d8 JM |
873 | }; |
874 | ||
4c3eb3ca | 875 | static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, struct net_device *dev) |
fa417f7b EC |
876 | { |
877 | memcpy(eui, dev->dev_addr, 3); | |
878 | memcpy(eui + 5, dev->dev_addr + 3, 3); | |
4c3eb3ca EC |
879 | if (vlan_id < 0x1000) { |
880 | eui[3] = vlan_id >> 8; | |
881 | eui[4] = vlan_id & 0xff; | |
882 | } else { | |
883 | eui[3] = 0xff; | |
884 | eui[4] = 0xfe; | |
885 | } | |
fa417f7b EC |
886 | eui[0] ^= 2; |
887 | } | |
888 | ||
889 | static void update_gids_task(struct work_struct *work) | |
890 | { | |
891 | struct update_gid_work *gw = container_of(work, struct update_gid_work, work); | |
892 | struct mlx4_cmd_mailbox *mailbox; | |
893 | union ib_gid *gids; | |
894 | int err; | |
895 | struct mlx4_dev *dev = gw->dev->dev; | |
896 | struct ib_event event; | |
897 | ||
898 | mailbox = mlx4_alloc_cmd_mailbox(dev); | |
899 | if (IS_ERR(mailbox)) { | |
900 | printk(KERN_WARNING "update gid table failed %ld\n", PTR_ERR(mailbox)); | |
901 | return; | |
902 | } | |
903 | ||
904 | gids = mailbox->buf; | |
905 | memcpy(gids, gw->gids, sizeof gw->gids); | |
906 | ||
907 | err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port, | |
f9baff50 JM |
908 | 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, |
909 | MLX4_CMD_NATIVE); | |
fa417f7b EC |
910 | if (err) |
911 | printk(KERN_WARNING "set port command failed\n"); | |
912 | else { | |
913 | memcpy(gw->dev->iboe.gid_table[gw->port - 1], gw->gids, sizeof gw->gids); | |
914 | event.device = &gw->dev->ib_dev; | |
915 | event.element.port_num = gw->port; | |
6451c712 | 916 | event.event = IB_EVENT_GID_CHANGE; |
fa417f7b EC |
917 | ib_dispatch_event(&event); |
918 | } | |
919 | ||
920 | mlx4_free_cmd_mailbox(dev, mailbox); | |
921 | kfree(gw); | |
922 | } | |
923 | ||
924 | static int update_ipv6_gids(struct mlx4_ib_dev *dev, int port, int clear) | |
925 | { | |
926 | struct net_device *ndev = dev->iboe.netdevs[port - 1]; | |
927 | struct update_gid_work *work; | |
4c3eb3ca EC |
928 | struct net_device *tmp; |
929 | int i; | |
930 | u8 *hits; | |
931 | int ret; | |
932 | union ib_gid gid; | |
933 | int free; | |
934 | int found; | |
935 | int need_update = 0; | |
936 | u16 vid; | |
fa417f7b EC |
937 | |
938 | work = kzalloc(sizeof *work, GFP_ATOMIC); | |
939 | if (!work) | |
940 | return -ENOMEM; | |
941 | ||
4c3eb3ca EC |
942 | hits = kzalloc(128, GFP_ATOMIC); |
943 | if (!hits) { | |
944 | ret = -ENOMEM; | |
945 | goto out; | |
946 | } | |
947 | ||
22f4fbd9 ED |
948 | rcu_read_lock(); |
949 | for_each_netdev_rcu(&init_net, tmp) { | |
4c3eb3ca EC |
950 | if (ndev && (tmp == ndev || rdma_vlan_dev_real_dev(tmp) == ndev)) { |
951 | gid.global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL); | |
952 | vid = rdma_vlan_dev_vlan_id(tmp); | |
953 | mlx4_addrconf_ifid_eui48(&gid.raw[8], vid, ndev); | |
954 | found = 0; | |
955 | free = -1; | |
956 | for (i = 0; i < 128; ++i) { | |
957 | if (free < 0 && | |
958 | !memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid)) | |
959 | free = i; | |
960 | if (!memcmp(&dev->iboe.gid_table[port - 1][i], &gid, sizeof gid)) { | |
961 | hits[i] = 1; | |
962 | found = 1; | |
963 | break; | |
964 | } | |
965 | } | |
966 | ||
967 | if (!found) { | |
968 | if (tmp == ndev && | |
969 | (memcmp(&dev->iboe.gid_table[port - 1][0], | |
970 | &gid, sizeof gid) || | |
971 | !memcmp(&dev->iboe.gid_table[port - 1][0], | |
972 | &zgid, sizeof gid))) { | |
973 | dev->iboe.gid_table[port - 1][0] = gid; | |
974 | ++need_update; | |
975 | hits[0] = 1; | |
976 | } else if (free >= 0) { | |
977 | dev->iboe.gid_table[port - 1][free] = gid; | |
978 | hits[free] = 1; | |
979 | ++need_update; | |
980 | } | |
981 | } | |
982 | } | |
fa417f7b | 983 | } |
22f4fbd9 | 984 | rcu_read_unlock(); |
4c3eb3ca EC |
985 | |
986 | for (i = 0; i < 128; ++i) | |
987 | if (!hits[i]) { | |
988 | if (memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid)) | |
989 | ++need_update; | |
990 | dev->iboe.gid_table[port - 1][i] = zgid; | |
991 | } | |
fa417f7b | 992 | |
4c3eb3ca EC |
993 | if (need_update) { |
994 | memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof work->gids); | |
995 | INIT_WORK(&work->work, update_gids_task); | |
996 | work->port = port; | |
997 | work->dev = dev; | |
998 | queue_work(wq, &work->work); | |
999 | } else | |
1000 | kfree(work); | |
fa417f7b | 1001 | |
4c3eb3ca | 1002 | kfree(hits); |
fa417f7b | 1003 | return 0; |
4c3eb3ca EC |
1004 | |
1005 | out: | |
1006 | kfree(work); | |
1007 | return ret; | |
fa417f7b EC |
1008 | } |
1009 | ||
1010 | static void handle_en_event(struct mlx4_ib_dev *dev, int port, unsigned long event) | |
1011 | { | |
1012 | switch (event) { | |
1013 | case NETDEV_UP: | |
4c3eb3ca | 1014 | case NETDEV_CHANGEADDR: |
fa417f7b EC |
1015 | update_ipv6_gids(dev, port, 0); |
1016 | break; | |
1017 | ||
1018 | case NETDEV_DOWN: | |
1019 | update_ipv6_gids(dev, port, 1); | |
1020 | dev->iboe.netdevs[port - 1] = NULL; | |
1021 | } | |
1022 | } | |
1023 | ||
1024 | static void netdev_added(struct mlx4_ib_dev *dev, int port) | |
1025 | { | |
1026 | update_ipv6_gids(dev, port, 0); | |
1027 | } | |
1028 | ||
1029 | static void netdev_removed(struct mlx4_ib_dev *dev, int port) | |
1030 | { | |
1031 | update_ipv6_gids(dev, port, 1); | |
1032 | } | |
1033 | ||
1034 | static int mlx4_ib_netdev_event(struct notifier_block *this, unsigned long event, | |
1035 | void *ptr) | |
1036 | { | |
1037 | struct net_device *dev = ptr; | |
1038 | struct mlx4_ib_dev *ibdev; | |
1039 | struct net_device *oldnd; | |
1040 | struct mlx4_ib_iboe *iboe; | |
1041 | int port; | |
1042 | ||
1043 | if (!net_eq(dev_net(dev), &init_net)) | |
1044 | return NOTIFY_DONE; | |
1045 | ||
1046 | ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb); | |
1047 | iboe = &ibdev->iboe; | |
1048 | ||
1049 | spin_lock(&iboe->lock); | |
1050 | mlx4_foreach_ib_transport_port(port, ibdev->dev) { | |
1051 | oldnd = iboe->netdevs[port - 1]; | |
1052 | iboe->netdevs[port - 1] = | |
0345584e | 1053 | mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port); |
fa417f7b EC |
1054 | if (oldnd != iboe->netdevs[port - 1]) { |
1055 | if (iboe->netdevs[port - 1]) | |
1056 | netdev_added(ibdev, port); | |
1057 | else | |
1058 | netdev_removed(ibdev, port); | |
1059 | } | |
1060 | } | |
1061 | ||
4c3eb3ca EC |
1062 | if (dev == iboe->netdevs[0] || |
1063 | (iboe->netdevs[0] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[0])) | |
fa417f7b | 1064 | handle_en_event(ibdev, 1, event); |
4c3eb3ca EC |
1065 | else if (dev == iboe->netdevs[1] |
1066 | || (iboe->netdevs[1] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[1])) | |
fa417f7b EC |
1067 | handle_en_event(ibdev, 2, event); |
1068 | ||
1069 | spin_unlock(&iboe->lock); | |
1070 | ||
1071 | return NOTIFY_DONE; | |
1072 | } | |
1073 | ||
225c7b1f RD |
1074 | static void *mlx4_ib_add(struct mlx4_dev *dev) |
1075 | { | |
1076 | struct mlx4_ib_dev *ibdev; | |
22e7ef9c | 1077 | int num_ports = 0; |
cd9281d8 | 1078 | int i; |
fa417f7b EC |
1079 | int err; |
1080 | struct mlx4_ib_iboe *iboe; | |
225c7b1f | 1081 | |
f1aa78b2 | 1082 | printk_once(KERN_INFO "%s", mlx4_ib_version); |
68f3948d | 1083 | |
8e59d254 JM |
1084 | if (mlx4_is_mfunc(dev)) { |
1085 | printk(KERN_WARNING "IB not yet supported in SRIOV\n"); | |
1086 | return NULL; | |
1087 | } | |
1088 | ||
fa417f7b | 1089 | mlx4_foreach_ib_transport_port(i, dev) |
22e7ef9c RD |
1090 | num_ports++; |
1091 | ||
1092 | /* No point in registering a device with no ports... */ | |
1093 | if (num_ports == 0) | |
1094 | return NULL; | |
1095 | ||
225c7b1f RD |
1096 | ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev); |
1097 | if (!ibdev) { | |
1098 | dev_err(&dev->pdev->dev, "Device struct alloc failed\n"); | |
1099 | return NULL; | |
1100 | } | |
1101 | ||
fa417f7b EC |
1102 | iboe = &ibdev->iboe; |
1103 | ||
225c7b1f RD |
1104 | if (mlx4_pd_alloc(dev, &ibdev->priv_pdn)) |
1105 | goto err_dealloc; | |
1106 | ||
1107 | if (mlx4_uar_alloc(dev, &ibdev->priv_uar)) | |
1108 | goto err_pd; | |
1109 | ||
4979d18f RD |
1110 | ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT, |
1111 | PAGE_SIZE); | |
225c7b1f RD |
1112 | if (!ibdev->uar_map) |
1113 | goto err_uar; | |
26c6bc7b | 1114 | MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock); |
225c7b1f | 1115 | |
225c7b1f RD |
1116 | ibdev->dev = dev; |
1117 | ||
1118 | strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX); | |
1119 | ibdev->ib_dev.owner = THIS_MODULE; | |
1120 | ibdev->ib_dev.node_type = RDMA_NODE_IB_CA; | |
95d04f07 | 1121 | ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey; |
22e7ef9c | 1122 | ibdev->num_ports = num_ports; |
7ff93f8b | 1123 | ibdev->ib_dev.phys_port_cnt = ibdev->num_ports; |
b8dd786f | 1124 | ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; |
225c7b1f RD |
1125 | ibdev->ib_dev.dma_device = &dev->pdev->dev; |
1126 | ||
1127 | ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION; | |
1128 | ibdev->ib_dev.uverbs_cmd_mask = | |
1129 | (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | | |
1130 | (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | | |
1131 | (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | | |
1132 | (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | | |
1133 | (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | | |
1134 | (1ull << IB_USER_VERBS_CMD_REG_MR) | | |
1135 | (1ull << IB_USER_VERBS_CMD_DEREG_MR) | | |
1136 | (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | | |
1137 | (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | | |
bbf8eed1 | 1138 | (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | |
225c7b1f RD |
1139 | (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | |
1140 | (1ull << IB_USER_VERBS_CMD_CREATE_QP) | | |
1141 | (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | | |
6a775e2b | 1142 | (1ull << IB_USER_VERBS_CMD_QUERY_QP) | |
225c7b1f RD |
1143 | (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | |
1144 | (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | | |
1145 | (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | | |
1146 | (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | | |
1147 | (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | | |
65541cb7 | 1148 | (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | |
18abd5ea | 1149 | (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | |
42849b26 SH |
1150 | (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) | |
1151 | (1ull << IB_USER_VERBS_CMD_OPEN_QP); | |
225c7b1f RD |
1152 | |
1153 | ibdev->ib_dev.query_device = mlx4_ib_query_device; | |
1154 | ibdev->ib_dev.query_port = mlx4_ib_query_port; | |
fa417f7b | 1155 | ibdev->ib_dev.get_link_layer = mlx4_ib_port_link_layer; |
225c7b1f RD |
1156 | ibdev->ib_dev.query_gid = mlx4_ib_query_gid; |
1157 | ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey; | |
1158 | ibdev->ib_dev.modify_device = mlx4_ib_modify_device; | |
1159 | ibdev->ib_dev.modify_port = mlx4_ib_modify_port; | |
1160 | ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext; | |
1161 | ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext; | |
1162 | ibdev->ib_dev.mmap = mlx4_ib_mmap; | |
1163 | ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd; | |
1164 | ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd; | |
1165 | ibdev->ib_dev.create_ah = mlx4_ib_create_ah; | |
1166 | ibdev->ib_dev.query_ah = mlx4_ib_query_ah; | |
1167 | ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah; | |
1168 | ibdev->ib_dev.create_srq = mlx4_ib_create_srq; | |
1169 | ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq; | |
65541cb7 | 1170 | ibdev->ib_dev.query_srq = mlx4_ib_query_srq; |
225c7b1f RD |
1171 | ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq; |
1172 | ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv; | |
1173 | ibdev->ib_dev.create_qp = mlx4_ib_create_qp; | |
1174 | ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp; | |
6a775e2b | 1175 | ibdev->ib_dev.query_qp = mlx4_ib_query_qp; |
225c7b1f RD |
1176 | ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp; |
1177 | ibdev->ib_dev.post_send = mlx4_ib_post_send; | |
1178 | ibdev->ib_dev.post_recv = mlx4_ib_post_recv; | |
1179 | ibdev->ib_dev.create_cq = mlx4_ib_create_cq; | |
3fdcb97f | 1180 | ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq; |
bbf8eed1 | 1181 | ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq; |
225c7b1f RD |
1182 | ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq; |
1183 | ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq; | |
1184 | ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq; | |
1185 | ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr; | |
1186 | ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr; | |
1187 | ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr; | |
95d04f07 RD |
1188 | ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr; |
1189 | ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list; | |
1190 | ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list; | |
225c7b1f RD |
1191 | ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach; |
1192 | ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach; | |
1193 | ibdev->ib_dev.process_mad = mlx4_ib_process_mad; | |
1194 | ||
8ad11fb6 JM |
1195 | ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc; |
1196 | ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr; | |
1197 | ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr; | |
1198 | ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc; | |
1199 | ||
012a8ff5 SH |
1200 | if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) { |
1201 | ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd; | |
1202 | ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd; | |
1203 | ibdev->ib_dev.uverbs_cmd_mask |= | |
1204 | (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) | | |
1205 | (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD); | |
1206 | } | |
1207 | ||
fa417f7b EC |
1208 | spin_lock_init(&iboe->lock); |
1209 | ||
225c7b1f RD |
1210 | if (init_node_data(ibdev)) |
1211 | goto err_map; | |
1212 | ||
cfcde11c OG |
1213 | for (i = 0; i < ibdev->num_ports; ++i) { |
1214 | if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) == | |
1215 | IB_LINK_LAYER_ETHERNET) { | |
1216 | err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]); | |
1217 | if (err) | |
1218 | ibdev->counters[i] = -1; | |
1219 | } else | |
1220 | ibdev->counters[i] = -1; | |
1221 | } | |
1222 | ||
225c7b1f RD |
1223 | spin_lock_init(&ibdev->sm_lock); |
1224 | mutex_init(&ibdev->cap_mask_mutex); | |
1225 | ||
9a6edb60 | 1226 | if (ib_register_device(&ibdev->ib_dev, NULL)) |
cfcde11c | 1227 | goto err_counter; |
225c7b1f RD |
1228 | |
1229 | if (mlx4_ib_mad_init(ibdev)) | |
1230 | goto err_reg; | |
1231 | ||
fa417f7b EC |
1232 | if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE && !iboe->nb.notifier_call) { |
1233 | iboe->nb.notifier_call = mlx4_ib_netdev_event; | |
1234 | err = register_netdevice_notifier(&iboe->nb); | |
1235 | if (err) | |
1236 | goto err_reg; | |
1237 | } | |
1238 | ||
cd9281d8 | 1239 | for (i = 0; i < ARRAY_SIZE(mlx4_class_attributes); ++i) { |
f4e91eb4 TJ |
1240 | if (device_create_file(&ibdev->ib_dev.dev, |
1241 | mlx4_class_attributes[i])) | |
fa417f7b | 1242 | goto err_notif; |
cd9281d8 JM |
1243 | } |
1244 | ||
3b4a8cd5 JM |
1245 | ibdev->ib_active = true; |
1246 | ||
225c7b1f RD |
1247 | return ibdev; |
1248 | ||
fa417f7b EC |
1249 | err_notif: |
1250 | if (unregister_netdevice_notifier(&ibdev->iboe.nb)) | |
1251 | printk(KERN_WARNING "failure unregistering notifier\n"); | |
1252 | flush_workqueue(wq); | |
1253 | ||
225c7b1f RD |
1254 | err_reg: |
1255 | ib_unregister_device(&ibdev->ib_dev); | |
1256 | ||
cfcde11c OG |
1257 | err_counter: |
1258 | for (; i; --i) | |
4af3ce0d RD |
1259 | if (ibdev->counters[i - 1] != -1) |
1260 | mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]); | |
cfcde11c | 1261 | |
225c7b1f RD |
1262 | err_map: |
1263 | iounmap(ibdev->uar_map); | |
1264 | ||
1265 | err_uar: | |
1266 | mlx4_uar_free(dev, &ibdev->priv_uar); | |
1267 | ||
1268 | err_pd: | |
1269 | mlx4_pd_free(dev, ibdev->priv_pdn); | |
1270 | ||
1271 | err_dealloc: | |
1272 | ib_dealloc_device(&ibdev->ib_dev); | |
1273 | ||
1274 | return NULL; | |
1275 | } | |
1276 | ||
1277 | static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr) | |
1278 | { | |
1279 | struct mlx4_ib_dev *ibdev = ibdev_ptr; | |
1280 | int p; | |
1281 | ||
a6a47771 YP |
1282 | mlx4_ib_mad_cleanup(ibdev); |
1283 | ib_unregister_device(&ibdev->ib_dev); | |
fa417f7b EC |
1284 | if (ibdev->iboe.nb.notifier_call) { |
1285 | if (unregister_netdevice_notifier(&ibdev->iboe.nb)) | |
1286 | printk(KERN_WARNING "failure unregistering notifier\n"); | |
1287 | ibdev->iboe.nb.notifier_call = NULL; | |
1288 | } | |
1289 | iounmap(ibdev->uar_map); | |
cfcde11c | 1290 | for (p = 0; p < ibdev->num_ports; ++p) |
4af3ce0d RD |
1291 | if (ibdev->counters[p] != -1) |
1292 | mlx4_counter_free(ibdev->dev, ibdev->counters[p]); | |
fa417f7b | 1293 | mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB) |
225c7b1f RD |
1294 | mlx4_CLOSE_PORT(dev, p); |
1295 | ||
225c7b1f RD |
1296 | mlx4_uar_free(dev, &ibdev->priv_uar); |
1297 | mlx4_pd_free(dev, ibdev->priv_pdn); | |
1298 | ib_dealloc_device(&ibdev->ib_dev); | |
1299 | } | |
1300 | ||
1301 | static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr, | |
37608eea | 1302 | enum mlx4_dev_event event, int port) |
225c7b1f RD |
1303 | { |
1304 | struct ib_event ibev; | |
7ff93f8b YP |
1305 | struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr); |
1306 | ||
1307 | if (port > ibdev->num_ports) | |
1308 | return; | |
225c7b1f RD |
1309 | |
1310 | switch (event) { | |
37608eea RD |
1311 | case MLX4_DEV_EVENT_PORT_UP: |
1312 | ibev.event = IB_EVENT_PORT_ACTIVE; | |
225c7b1f RD |
1313 | break; |
1314 | ||
37608eea RD |
1315 | case MLX4_DEV_EVENT_PORT_DOWN: |
1316 | ibev.event = IB_EVENT_PORT_ERR; | |
1317 | break; | |
1318 | ||
1319 | case MLX4_DEV_EVENT_CATASTROPHIC_ERROR: | |
3b4a8cd5 | 1320 | ibdev->ib_active = false; |
225c7b1f RD |
1321 | ibev.event = IB_EVENT_DEVICE_FATAL; |
1322 | break; | |
1323 | ||
1324 | default: | |
1325 | return; | |
1326 | } | |
1327 | ||
1328 | ibev.device = ibdev_ptr; | |
1329 | ibev.element.port_num = port; | |
1330 | ||
1331 | ib_dispatch_event(&ibev); | |
1332 | } | |
1333 | ||
1334 | static struct mlx4_interface mlx4_ib_interface = { | |
fa417f7b EC |
1335 | .add = mlx4_ib_add, |
1336 | .remove = mlx4_ib_remove, | |
1337 | .event = mlx4_ib_event, | |
0345584e | 1338 | .protocol = MLX4_PROT_IB_IPV6 |
225c7b1f RD |
1339 | }; |
1340 | ||
1341 | static int __init mlx4_ib_init(void) | |
1342 | { | |
fa417f7b EC |
1343 | int err; |
1344 | ||
1345 | wq = create_singlethread_workqueue("mlx4_ib"); | |
1346 | if (!wq) | |
1347 | return -ENOMEM; | |
1348 | ||
1349 | err = mlx4_register_interface(&mlx4_ib_interface); | |
1350 | if (err) { | |
1351 | destroy_workqueue(wq); | |
1352 | return err; | |
1353 | } | |
1354 | ||
1355 | return 0; | |
225c7b1f RD |
1356 | } |
1357 | ||
1358 | static void __exit mlx4_ib_cleanup(void) | |
1359 | { | |
1360 | mlx4_unregister_interface(&mlx4_ib_interface); | |
fa417f7b | 1361 | destroy_workqueue(wq); |
225c7b1f RD |
1362 | } |
1363 | ||
1364 | module_init(mlx4_ib_init); | |
1365 | module_exit(mlx4_ib_cleanup); |