2 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
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:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
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.
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
34 #include <linux/module.h>
35 #include <linux/init.h>
36 #include <linux/slab.h>
37 #include <linux/errno.h>
38 #include <linux/netdevice.h>
39 #include <linux/inetdevice.h>
40 #include <linux/rtnetlink.h>
41 #include <linux/if_vlan.h>
43 #include <rdma/ib_smi.h>
44 #include <rdma/ib_user_verbs.h>
45 #include <rdma/ib_addr.h>
47 #include <linux/mlx4/driver.h>
48 #include <linux/mlx4/cmd.h>
53 #define DRV_NAME "mlx4_ib"
54 #define DRV_VERSION "1.0"
55 #define DRV_RELDATE "April 4, 2008"
57 MODULE_AUTHOR("Roland Dreier");
58 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
59 MODULE_LICENSE("Dual BSD/GPL");
60 MODULE_VERSION(DRV_VERSION);
62 static const char mlx4_ib_version[] =
63 DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
64 DRV_VERSION " (" DRV_RELDATE ")\n";
66 struct update_gid_work {
67 struct work_struct work;
68 union ib_gid gids[128];
69 struct mlx4_ib_dev *dev;
73 static struct workqueue_struct *wq;
75 static void init_query_mad(struct ib_smp *mad)
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;
83 static union ib_gid zgid;
85 static int mlx4_ib_query_device(struct ib_device *ibdev,
86 struct ib_device_attr *props)
88 struct mlx4_ib_dev *dev = to_mdev(ibdev);
89 struct ib_smp *in_mad = NULL;
90 struct ib_smp *out_mad = NULL;
93 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
94 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
95 if (!in_mad || !out_mad)
98 init_query_mad(in_mad);
99 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
101 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad);
105 memset(props, 0, sizeof *props);
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 |
111 IB_DEVICE_RC_RNR_NAK_GEN |
112 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
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;
121 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
122 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
123 if (dev->dev->caps.max_gso_sz && dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH)
124 props->device_cap_flags |= IB_DEVICE_UD_TSO;
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;
131 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
132 props->device_cap_flags |= IB_DEVICE_XRC;
134 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
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);
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;
154 props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1;
155 props->max_srq_sge = dev->dev->caps.max_srq_sge;
156 props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
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;
160 props->masked_atomic_cap = IB_ATOMIC_HCA;
161 props->max_pkeys = dev->dev->caps.pkey_table_len[1];
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;
166 props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
175 static enum rdma_link_layer
176 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
178 struct mlx4_dev *dev = to_mdev(device)->dev;
180 return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
181 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
184 static int ib_link_query_port(struct ib_device *ibdev, u8 port,
185 struct ib_port_attr *props)
187 struct ib_smp *in_mad = NULL;
188 struct ib_smp *out_mad = NULL;
189 int ext_active_speed;
192 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
193 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
194 if (!in_mad || !out_mad)
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);
201 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL,
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));
214 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port];
215 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz;
216 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port];
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;
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;
231 switch (ext_active_speed) {
233 props->active_speed = IB_SPEED_FDR;
236 props->active_speed = IB_SPEED_EDR;
241 /* If reported active speed is QDR, check if is FDR-10 */
242 if (props->active_speed == IB_SPEED_QDR) {
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);
247 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port,
248 NULL, NULL, in_mad, out_mad);
252 /* Checking LinkSpeedActive for FDR-10 */
253 if (out_mad->data[15] & 0x1)
254 props->active_speed = IB_SPEED_FDR10;
262 static u8 state_to_phys_state(enum ib_port_state state)
264 return state == IB_PORT_ACTIVE ? 5 : 3;
267 static int eth_link_query_port(struct ib_device *ibdev, u8 port,
268 struct ib_port_attr *props)
271 struct mlx4_ib_dev *mdev = to_mdev(ibdev);
272 struct mlx4_ib_iboe *iboe = &mdev->iboe;
273 struct net_device *ndev;
275 struct mlx4_cmd_mailbox *mailbox;
278 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
280 return PTR_ERR(mailbox);
282 err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
283 MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
288 props->active_width = (((u8 *)mailbox->buf)[5] == 0x40) ?
289 IB_WIDTH_4X : IB_WIDTH_1X;
290 props->active_speed = IB_SPEED_QDR;
291 props->port_cap_flags = IB_PORT_CM_SUP;
292 props->gid_tbl_len = mdev->dev->caps.gid_table_len[port];
293 props->max_msg_sz = mdev->dev->caps.max_msg_sz;
294 props->pkey_tbl_len = 1;
295 props->max_mtu = IB_MTU_4096;
296 props->max_vl_num = 2;
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];
305 tmp = iboe_get_mtu(ndev->mtu);
306 props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;
308 props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ?
309 IB_PORT_ACTIVE : IB_PORT_DOWN;
310 props->phys_state = state_to_phys_state(props->state);
312 spin_unlock(&iboe->lock);
314 mlx4_free_cmd_mailbox(mdev->dev, mailbox);
318 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
319 struct ib_port_attr *props)
323 memset(props, 0, sizeof *props);
325 err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
326 ib_link_query_port(ibdev, port, props) :
327 eth_link_query_port(ibdev, port, props);
332 static int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
335 struct ib_smp *in_mad = NULL;
336 struct ib_smp *out_mad = NULL;
339 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
340 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
341 if (!in_mad || !out_mad)
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);
348 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
352 memcpy(gid->raw, out_mad->data + 8, 8);
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);
358 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
362 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
370 static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index,
373 struct mlx4_ib_dev *dev = to_mdev(ibdev);
375 *gid = dev->iboe.gid_table[port - 1][index];
380 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
383 if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND)
384 return __mlx4_ib_query_gid(ibdev, port, index, gid);
386 return iboe_query_gid(ibdev, port, index, gid);
389 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
392 struct ib_smp *in_mad = NULL;
393 struct ib_smp *out_mad = NULL;
396 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
397 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
398 if (!in_mad || !out_mad)
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);
405 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
409 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
417 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
418 struct ib_device_modify *props)
420 struct mlx4_cmd_mailbox *mailbox;
422 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
425 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
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);
433 * If possible, pass node desc to FW, so it can generate
434 * a 144 trap. If cmd fails, just ignore.
436 mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
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,
443 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
445 mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
450 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
453 struct mlx4_cmd_mailbox *mailbox;
455 u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
457 mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
459 return PTR_ERR(mailbox);
461 memset(mailbox->buf, 0, 256);
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);
467 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols;
468 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
471 err = mlx4_cmd(dev->dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT,
472 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
474 mlx4_free_cmd_mailbox(dev->dev, mailbox);
478 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
479 struct ib_port_modify *props)
481 struct ib_port_attr attr;
485 mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);
487 err = mlx4_ib_query_port(ibdev, port, &attr);
491 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
492 ~props->clr_port_cap_mask;
494 err = mlx4_SET_PORT(to_mdev(ibdev), port,
495 !!(mask & IB_PORT_RESET_QKEY_CNTR),
499 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
503 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
504 struct ib_udata *udata)
506 struct mlx4_ib_dev *dev = to_mdev(ibdev);
507 struct mlx4_ib_ucontext *context;
508 struct mlx4_ib_alloc_ucontext_resp resp;
512 return ERR_PTR(-EAGAIN);
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;
518 context = kmalloc(sizeof *context, GFP_KERNEL);
520 return ERR_PTR(-ENOMEM);
522 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
528 INIT_LIST_HEAD(&context->db_page_list);
529 mutex_init(&context->db_page_mutex);
531 err = ib_copy_to_udata(udata, &resp, sizeof resp);
533 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
535 return ERR_PTR(-EFAULT);
538 return &context->ibucontext;
541 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
543 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
545 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
551 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
553 struct mlx4_ib_dev *dev = to_mdev(context->device);
555 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
558 if (vma->vm_pgoff == 0) {
559 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
561 if (io_remap_pfn_range(vma, vma->vm_start,
562 to_mucontext(context)->uar.pfn,
563 PAGE_SIZE, vma->vm_page_prot))
565 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
566 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
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))
579 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
580 struct ib_ucontext *context,
581 struct ib_udata *udata)
583 struct mlx4_ib_pd *pd;
586 pd = kmalloc(sizeof *pd, GFP_KERNEL);
588 return ERR_PTR(-ENOMEM);
590 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
597 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
598 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
600 return ERR_PTR(-EFAULT);
606 static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
608 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
614 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
615 struct ib_ucontext *context,
616 struct ib_udata *udata)
618 struct mlx4_ib_xrcd *xrcd;
621 if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
622 return ERR_PTR(-ENOSYS);
624 xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
626 return ERR_PTR(-ENOMEM);
628 err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
632 xrcd->pd = ib_alloc_pd(ibdev);
633 if (IS_ERR(xrcd->pd)) {
634 err = PTR_ERR(xrcd->pd);
638 xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0);
639 if (IS_ERR(xrcd->cq)) {
640 err = PTR_ERR(xrcd->cq);
644 return &xrcd->ibxrcd;
647 ib_dealloc_pd(xrcd->pd);
649 mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
655 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
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);
665 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
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;
671 ge = kzalloc(sizeof *ge, GFP_KERNEL);
676 if (mlx4_ib_add_mc(mdev, mqp, gid)) {
677 ge->port = mqp->port;
681 mutex_lock(&mqp->mutex);
682 list_add_tail(&ge->list, &mqp->gid_list);
683 mutex_unlock(&mqp->mutex);
688 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
692 struct net_device *ndev;
698 spin_lock(&mdev->iboe.lock);
699 ndev = mdev->iboe.netdevs[mqp->port - 1];
702 spin_unlock(&mdev->iboe.lock);
705 rdma_get_mcast_mac((struct in6_addr *)gid, mac);
707 dev_mc_add(mdev->iboe.netdevs[mqp->port - 1], mac);
716 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
719 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
720 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
722 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
723 !!(mqp->flags & MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
728 err = add_gid_entry(ibqp, gid);
735 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, MLX4_PROT_IB_IPV6);
739 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
741 struct mlx4_ib_gid_entry *ge;
742 struct mlx4_ib_gid_entry *tmp;
743 struct mlx4_ib_gid_entry *ret = NULL;
745 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
746 if (!memcmp(raw, ge->gid.raw, 16)) {
755 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
758 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
759 struct mlx4_ib_qp *mqp = to_mqp(ibqp);
761 struct net_device *ndev;
762 struct mlx4_ib_gid_entry *ge;
764 err = mlx4_multicast_detach(mdev->dev,
765 &mqp->mqp, gid->raw, MLX4_PROT_IB_IPV6);
769 mutex_lock(&mqp->mutex);
770 ge = find_gid_entry(mqp, gid->raw);
772 spin_lock(&mdev->iboe.lock);
773 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
776 spin_unlock(&mdev->iboe.lock);
777 rdma_get_mcast_mac((struct in6_addr *)gid, mac);
780 dev_mc_del(mdev->iboe.netdevs[ge->port - 1], mac);
787 printk(KERN_WARNING "could not find mgid entry\n");
789 mutex_unlock(&mqp->mutex);
794 static int init_node_data(struct mlx4_ib_dev *dev)
796 struct ib_smp *in_mad = NULL;
797 struct ib_smp *out_mad = NULL;
800 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
801 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
802 if (!in_mad || !out_mad)
805 init_query_mad(in_mad);
806 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
808 err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
812 memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
814 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
816 err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
820 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
828 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
831 struct mlx4_ib_dev *dev =
832 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
833 return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
836 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
839 struct mlx4_ib_dev *dev =
840 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
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);
846 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
849 struct mlx4_ib_dev *dev =
850 container_of(device, struct mlx4_ib_dev, ib_dev.dev);
851 return sprintf(buf, "%x\n", dev->dev->rev_id);
854 static ssize_t show_board(struct device *device, struct device_attribute *attr,
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,
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);
868 static struct device_attribute *mlx4_class_attributes[] = {
875 static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, struct net_device *dev)
877 memcpy(eui, dev->dev_addr, 3);
878 memcpy(eui + 5, dev->dev_addr + 3, 3);
879 if (vlan_id < 0x1000) {
880 eui[3] = vlan_id >> 8;
881 eui[4] = vlan_id & 0xff;
889 static void update_gids_task(struct work_struct *work)
891 struct update_gid_work *gw = container_of(work, struct update_gid_work, work);
892 struct mlx4_cmd_mailbox *mailbox;
895 struct mlx4_dev *dev = gw->dev->dev;
896 struct ib_event event;
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));
905 memcpy(gids, gw->gids, sizeof gw->gids);
907 err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port,
908 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
911 printk(KERN_WARNING "set port command failed\n");
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;
916 event.event = IB_EVENT_GID_CHANGE;
917 ib_dispatch_event(&event);
920 mlx4_free_cmd_mailbox(dev, mailbox);
924 static int update_ipv6_gids(struct mlx4_ib_dev *dev, int port, int clear)
926 struct net_device *ndev = dev->iboe.netdevs[port - 1];
927 struct update_gid_work *work;
928 struct net_device *tmp;
938 work = kzalloc(sizeof *work, GFP_ATOMIC);
942 hits = kzalloc(128, GFP_ATOMIC);
949 for_each_netdev_rcu(&init_net, tmp) {
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);
956 for (i = 0; i < 128; ++i) {
958 !memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid))
960 if (!memcmp(&dev->iboe.gid_table[port - 1][i], &gid, sizeof gid)) {
969 (memcmp(&dev->iboe.gid_table[port - 1][0],
971 !memcmp(&dev->iboe.gid_table[port - 1][0],
972 &zgid, sizeof gid))) {
973 dev->iboe.gid_table[port - 1][0] = gid;
976 } else if (free >= 0) {
977 dev->iboe.gid_table[port - 1][free] = gid;
986 for (i = 0; i < 128; ++i)
988 if (memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid))
990 dev->iboe.gid_table[port - 1][i] = zgid;
994 memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof work->gids);
995 INIT_WORK(&work->work, update_gids_task);
998 queue_work(wq, &work->work);
1010 static void handle_en_event(struct mlx4_ib_dev *dev, int port, unsigned long event)
1014 case NETDEV_CHANGEADDR:
1015 update_ipv6_gids(dev, port, 0);
1019 update_ipv6_gids(dev, port, 1);
1020 dev->iboe.netdevs[port - 1] = NULL;
1024 static void netdev_added(struct mlx4_ib_dev *dev, int port)
1026 update_ipv6_gids(dev, port, 0);
1029 static void netdev_removed(struct mlx4_ib_dev *dev, int port)
1031 update_ipv6_gids(dev, port, 1);
1034 static int mlx4_ib_netdev_event(struct notifier_block *this, unsigned long event,
1037 struct net_device *dev = ptr;
1038 struct mlx4_ib_dev *ibdev;
1039 struct net_device *oldnd;
1040 struct mlx4_ib_iboe *iboe;
1043 if (!net_eq(dev_net(dev), &init_net))
1046 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
1047 iboe = &ibdev->iboe;
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] =
1053 mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
1054 if (oldnd != iboe->netdevs[port - 1]) {
1055 if (iboe->netdevs[port - 1])
1056 netdev_added(ibdev, port);
1058 netdev_removed(ibdev, port);
1062 if (dev == iboe->netdevs[0] ||
1063 (iboe->netdevs[0] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[0]))
1064 handle_en_event(ibdev, 1, event);
1065 else if (dev == iboe->netdevs[1]
1066 || (iboe->netdevs[1] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[1]))
1067 handle_en_event(ibdev, 2, event);
1069 spin_unlock(&iboe->lock);
1074 static void *mlx4_ib_add(struct mlx4_dev *dev)
1076 struct mlx4_ib_dev *ibdev;
1080 struct mlx4_ib_iboe *iboe;
1082 printk_once(KERN_INFO "%s", mlx4_ib_version);
1084 if (mlx4_is_mfunc(dev)) {
1085 printk(KERN_WARNING "IB not yet supported in SRIOV\n");
1089 mlx4_foreach_ib_transport_port(i, dev)
1092 /* No point in registering a device with no ports... */
1096 ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
1098 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
1102 iboe = &ibdev->iboe;
1104 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
1107 if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
1110 ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
1112 if (!ibdev->uar_map)
1114 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
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;
1121 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey;
1122 ibdev->num_ports = num_ports;
1123 ibdev->ib_dev.phys_port_cnt = ibdev->num_ports;
1124 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;
1125 ibdev->ib_dev.dma_device = &dev->pdev->dev;
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) |
1138 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) |
1139 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1140 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1141 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1142 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
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) |
1148 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
1149 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) |
1150 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) |
1151 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
1153 ibdev->ib_dev.query_device = mlx4_ib_query_device;
1154 ibdev->ib_dev.query_port = mlx4_ib_query_port;
1155 ibdev->ib_dev.get_link_layer = mlx4_ib_port_link_layer;
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;
1170 ibdev->ib_dev.query_srq = mlx4_ib_query_srq;
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;
1175 ibdev->ib_dev.query_qp = mlx4_ib_query_qp;
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;
1180 ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq;
1181 ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq;
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;
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;
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;
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;
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);
1208 spin_lock_init(&iboe->lock);
1210 if (init_node_data(ibdev))
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]);
1218 ibdev->counters[i] = -1;
1220 ibdev->counters[i] = -1;
1223 spin_lock_init(&ibdev->sm_lock);
1224 mutex_init(&ibdev->cap_mask_mutex);
1226 if (ib_register_device(&ibdev->ib_dev, NULL))
1229 if (mlx4_ib_mad_init(ibdev))
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);
1239 for (i = 0; i < ARRAY_SIZE(mlx4_class_attributes); ++i) {
1240 if (device_create_file(&ibdev->ib_dev.dev,
1241 mlx4_class_attributes[i]))
1245 ibdev->ib_active = true;
1250 if (unregister_netdevice_notifier(&ibdev->iboe.nb))
1251 printk(KERN_WARNING "failure unregistering notifier\n");
1252 flush_workqueue(wq);
1255 ib_unregister_device(&ibdev->ib_dev);
1259 if (ibdev->counters[i - 1] != -1)
1260 mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]);
1263 iounmap(ibdev->uar_map);
1266 mlx4_uar_free(dev, &ibdev->priv_uar);
1269 mlx4_pd_free(dev, ibdev->priv_pdn);
1272 ib_dealloc_device(&ibdev->ib_dev);
1277 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
1279 struct mlx4_ib_dev *ibdev = ibdev_ptr;
1282 mlx4_ib_mad_cleanup(ibdev);
1283 ib_unregister_device(&ibdev->ib_dev);
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;
1289 iounmap(ibdev->uar_map);
1290 for (p = 0; p < ibdev->num_ports; ++p)
1291 if (ibdev->counters[p] != -1)
1292 mlx4_counter_free(ibdev->dev, ibdev->counters[p]);
1293 mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
1294 mlx4_CLOSE_PORT(dev, p);
1296 mlx4_uar_free(dev, &ibdev->priv_uar);
1297 mlx4_pd_free(dev, ibdev->priv_pdn);
1298 ib_dealloc_device(&ibdev->ib_dev);
1301 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
1302 enum mlx4_dev_event event, int port)
1304 struct ib_event ibev;
1305 struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
1307 if (port > ibdev->num_ports)
1311 case MLX4_DEV_EVENT_PORT_UP:
1312 ibev.event = IB_EVENT_PORT_ACTIVE;
1315 case MLX4_DEV_EVENT_PORT_DOWN:
1316 ibev.event = IB_EVENT_PORT_ERR;
1319 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
1320 ibdev->ib_active = false;
1321 ibev.event = IB_EVENT_DEVICE_FATAL;
1328 ibev.device = ibdev_ptr;
1329 ibev.element.port_num = port;
1331 ib_dispatch_event(&ibev);
1334 static struct mlx4_interface mlx4_ib_interface = {
1336 .remove = mlx4_ib_remove,
1337 .event = mlx4_ib_event,
1338 .protocol = MLX4_PROT_IB_IPV6
1341 static int __init mlx4_ib_init(void)
1345 wq = create_singlethread_workqueue("mlx4_ib");
1349 err = mlx4_register_interface(&mlx4_ib_interface);
1351 destroy_workqueue(wq);
1358 static void __exit mlx4_ib_cleanup(void)
1360 mlx4_unregister_interface(&mlx4_ib_interface);
1361 destroy_workqueue(wq);
1364 module_init(mlx4_ib_init);
1365 module_exit(mlx4_ib_cleanup);