2 * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved.
3 * Copyright (c) 2004 Infinicon Corporation. All rights reserved.
4 * Copyright (c) 2004 Intel Corporation. All rights reserved.
5 * Copyright (c) 2004 Topspin Corporation. All rights reserved.
6 * Copyright (c) 2004 Voltaire Corporation. All rights reserved.
7 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
8 * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved.
10 * This software is available to you under a choice of one of two
11 * licenses. You may choose to be licensed under the terms of the GNU
12 * General Public License (GPL) Version 2, available from the file
13 * COPYING in the main directory of this source tree, or the
14 * OpenIB.org BSD license below:
16 * Redistribution and use in source and binary forms, with or
17 * without modification, are permitted provided that the following
20 * - Redistributions of source code must retain the above
21 * copyright notice, this list of conditions and the following
24 * - Redistributions in binary form must reproduce the above
25 * copyright notice, this list of conditions and the following
26 * disclaimer in the documentation and/or other materials
27 * provided with the distribution.
29 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
30 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
31 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
32 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
33 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
34 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
35 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
39 #include <linux/errno.h>
40 #include <linux/err.h>
41 #include <linux/export.h>
42 #include <linux/string.h>
43 #include <linux/slab.h>
45 #include <rdma/ib_verbs.h>
46 #include <rdma/ib_cache.h>
47 #include <rdma/ib_addr.h>
49 #include "core_priv.h"
51 static const char * const ib_events[] = {
52 [IB_EVENT_CQ_ERR] = "CQ error",
53 [IB_EVENT_QP_FATAL] = "QP fatal error",
54 [IB_EVENT_QP_REQ_ERR] = "QP request error",
55 [IB_EVENT_QP_ACCESS_ERR] = "QP access error",
56 [IB_EVENT_COMM_EST] = "communication established",
57 [IB_EVENT_SQ_DRAINED] = "send queue drained",
58 [IB_EVENT_PATH_MIG] = "path migration successful",
59 [IB_EVENT_PATH_MIG_ERR] = "path migration error",
60 [IB_EVENT_DEVICE_FATAL] = "device fatal error",
61 [IB_EVENT_PORT_ACTIVE] = "port active",
62 [IB_EVENT_PORT_ERR] = "port error",
63 [IB_EVENT_LID_CHANGE] = "LID change",
64 [IB_EVENT_PKEY_CHANGE] = "P_key change",
65 [IB_EVENT_SM_CHANGE] = "SM change",
66 [IB_EVENT_SRQ_ERR] = "SRQ error",
67 [IB_EVENT_SRQ_LIMIT_REACHED] = "SRQ limit reached",
68 [IB_EVENT_QP_LAST_WQE_REACHED] = "last WQE reached",
69 [IB_EVENT_CLIENT_REREGISTER] = "client reregister",
70 [IB_EVENT_GID_CHANGE] = "GID changed",
73 const char *ib_event_msg(enum ib_event_type event)
77 return (index < ARRAY_SIZE(ib_events) && ib_events[index]) ?
78 ib_events[index] : "unrecognized event";
80 EXPORT_SYMBOL(ib_event_msg);
82 static const char * const wc_statuses[] = {
83 [IB_WC_SUCCESS] = "success",
84 [IB_WC_LOC_LEN_ERR] = "local length error",
85 [IB_WC_LOC_QP_OP_ERR] = "local QP operation error",
86 [IB_WC_LOC_EEC_OP_ERR] = "local EE context operation error",
87 [IB_WC_LOC_PROT_ERR] = "local protection error",
88 [IB_WC_WR_FLUSH_ERR] = "WR flushed",
89 [IB_WC_MW_BIND_ERR] = "memory management operation error",
90 [IB_WC_BAD_RESP_ERR] = "bad response error",
91 [IB_WC_LOC_ACCESS_ERR] = "local access error",
92 [IB_WC_REM_INV_REQ_ERR] = "invalid request error",
93 [IB_WC_REM_ACCESS_ERR] = "remote access error",
94 [IB_WC_REM_OP_ERR] = "remote operation error",
95 [IB_WC_RETRY_EXC_ERR] = "transport retry counter exceeded",
96 [IB_WC_RNR_RETRY_EXC_ERR] = "RNR retry counter exceeded",
97 [IB_WC_LOC_RDD_VIOL_ERR] = "local RDD violation error",
98 [IB_WC_REM_INV_RD_REQ_ERR] = "remote invalid RD request",
99 [IB_WC_REM_ABORT_ERR] = "operation aborted",
100 [IB_WC_INV_EECN_ERR] = "invalid EE context number",
101 [IB_WC_INV_EEC_STATE_ERR] = "invalid EE context state",
102 [IB_WC_FATAL_ERR] = "fatal error",
103 [IB_WC_RESP_TIMEOUT_ERR] = "response timeout error",
104 [IB_WC_GENERAL_ERR] = "general error",
107 const char *ib_wc_status_msg(enum ib_wc_status status)
109 size_t index = status;
111 return (index < ARRAY_SIZE(wc_statuses) && wc_statuses[index]) ?
112 wc_statuses[index] : "unrecognized status";
114 EXPORT_SYMBOL(ib_wc_status_msg);
116 __attribute_const__ int ib_rate_to_mult(enum ib_rate rate)
119 case IB_RATE_2_5_GBPS: return 1;
120 case IB_RATE_5_GBPS: return 2;
121 case IB_RATE_10_GBPS: return 4;
122 case IB_RATE_20_GBPS: return 8;
123 case IB_RATE_30_GBPS: return 12;
124 case IB_RATE_40_GBPS: return 16;
125 case IB_RATE_60_GBPS: return 24;
126 case IB_RATE_80_GBPS: return 32;
127 case IB_RATE_120_GBPS: return 48;
131 EXPORT_SYMBOL(ib_rate_to_mult);
133 __attribute_const__ enum ib_rate mult_to_ib_rate(int mult)
136 case 1: return IB_RATE_2_5_GBPS;
137 case 2: return IB_RATE_5_GBPS;
138 case 4: return IB_RATE_10_GBPS;
139 case 8: return IB_RATE_20_GBPS;
140 case 12: return IB_RATE_30_GBPS;
141 case 16: return IB_RATE_40_GBPS;
142 case 24: return IB_RATE_60_GBPS;
143 case 32: return IB_RATE_80_GBPS;
144 case 48: return IB_RATE_120_GBPS;
145 default: return IB_RATE_PORT_CURRENT;
148 EXPORT_SYMBOL(mult_to_ib_rate);
150 __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate)
153 case IB_RATE_2_5_GBPS: return 2500;
154 case IB_RATE_5_GBPS: return 5000;
155 case IB_RATE_10_GBPS: return 10000;
156 case IB_RATE_20_GBPS: return 20000;
157 case IB_RATE_30_GBPS: return 30000;
158 case IB_RATE_40_GBPS: return 40000;
159 case IB_RATE_60_GBPS: return 60000;
160 case IB_RATE_80_GBPS: return 80000;
161 case IB_RATE_120_GBPS: return 120000;
162 case IB_RATE_14_GBPS: return 14062;
163 case IB_RATE_56_GBPS: return 56250;
164 case IB_RATE_112_GBPS: return 112500;
165 case IB_RATE_168_GBPS: return 168750;
166 case IB_RATE_25_GBPS: return 25781;
167 case IB_RATE_100_GBPS: return 103125;
168 case IB_RATE_200_GBPS: return 206250;
169 case IB_RATE_300_GBPS: return 309375;
173 EXPORT_SYMBOL(ib_rate_to_mbps);
175 __attribute_const__ enum rdma_transport_type
176 rdma_node_get_transport(enum rdma_node_type node_type)
179 case RDMA_NODE_IB_CA:
180 case RDMA_NODE_IB_SWITCH:
181 case RDMA_NODE_IB_ROUTER:
182 return RDMA_TRANSPORT_IB;
184 return RDMA_TRANSPORT_IWARP;
185 case RDMA_NODE_USNIC:
186 return RDMA_TRANSPORT_USNIC;
187 case RDMA_NODE_USNIC_UDP:
188 return RDMA_TRANSPORT_USNIC_UDP;
194 EXPORT_SYMBOL(rdma_node_get_transport);
196 enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, u8 port_num)
198 if (device->get_link_layer)
199 return device->get_link_layer(device, port_num);
201 switch (rdma_node_get_transport(device->node_type)) {
202 case RDMA_TRANSPORT_IB:
203 return IB_LINK_LAYER_INFINIBAND;
204 case RDMA_TRANSPORT_IWARP:
205 case RDMA_TRANSPORT_USNIC:
206 case RDMA_TRANSPORT_USNIC_UDP:
207 return IB_LINK_LAYER_ETHERNET;
209 return IB_LINK_LAYER_UNSPECIFIED;
212 EXPORT_SYMBOL(rdma_port_get_link_layer);
214 /* Protection domains */
217 * ib_alloc_pd - Allocates an unused protection domain.
218 * @device: The device on which to allocate the protection domain.
220 * A protection domain object provides an association between QPs, shared
221 * receive queues, address handles, memory regions, and memory windows.
223 * Every PD has a local_dma_lkey which can be used as the lkey value for local
226 struct ib_pd *ib_alloc_pd(struct ib_device *device)
229 struct ib_device_attr devattr;
232 rc = ib_query_device(device, &devattr);
236 pd = device->alloc_pd(device, NULL, NULL);
243 atomic_set(&pd->usecnt, 0);
245 if (devattr.device_cap_flags & IB_DEVICE_LOCAL_DMA_LKEY)
246 pd->local_dma_lkey = device->local_dma_lkey;
250 mr = ib_get_dma_mr(pd, IB_ACCESS_LOCAL_WRITE);
253 return (struct ib_pd *)mr;
257 pd->local_dma_lkey = pd->local_mr->lkey;
261 EXPORT_SYMBOL(ib_alloc_pd);
264 * ib_dealloc_pd - Deallocates a protection domain.
265 * @pd: The protection domain to deallocate.
267 * It is an error to call this function while any resources in the pd still
268 * exist. The caller is responsible to synchronously destroy them and
269 * guarantee no new allocations will happen.
271 void ib_dealloc_pd(struct ib_pd *pd)
276 ret = ib_dereg_mr(pd->local_mr);
281 /* uverbs manipulates usecnt with proper locking, while the kabi
282 requires the caller to guarantee we can't race here. */
283 WARN_ON(atomic_read(&pd->usecnt));
285 /* Making delalloc_pd a void return is a WIP, no driver should return
287 ret = pd->device->dealloc_pd(pd);
288 WARN_ONCE(ret, "Infiniband HW driver failed dealloc_pd");
290 EXPORT_SYMBOL(ib_dealloc_pd);
292 /* Address handles */
294 struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
298 ah = pd->device->create_ah(pd, ah_attr);
301 ah->device = pd->device;
304 atomic_inc(&pd->usecnt);
309 EXPORT_SYMBOL(ib_create_ah);
311 int ib_init_ah_from_wc(struct ib_device *device, u8 port_num,
312 const struct ib_wc *wc, const struct ib_grh *grh,
313 struct ib_ah_attr *ah_attr)
319 memset(ah_attr, 0, sizeof *ah_attr);
320 if (rdma_cap_eth_ah(device, port_num)) {
321 if (!(wc->wc_flags & IB_WC_GRH))
324 if (wc->wc_flags & IB_WC_WITH_SMAC &&
325 wc->wc_flags & IB_WC_WITH_VLAN) {
326 memcpy(ah_attr->dmac, wc->smac, ETH_ALEN);
327 ah_attr->vlan_id = wc->vlan_id;
329 ret = rdma_addr_find_dmac_by_grh(&grh->dgid, &grh->sgid,
330 ah_attr->dmac, &ah_attr->vlan_id);
335 ah_attr->vlan_id = 0xffff;
338 ah_attr->dlid = wc->slid;
339 ah_attr->sl = wc->sl;
340 ah_attr->src_path_bits = wc->dlid_path_bits;
341 ah_attr->port_num = port_num;
343 if (wc->wc_flags & IB_WC_GRH) {
344 ah_attr->ah_flags = IB_AH_GRH;
345 ah_attr->grh.dgid = grh->sgid;
347 ret = ib_find_cached_gid(device, &grh->dgid, &port_num,
352 ah_attr->grh.sgid_index = (u8) gid_index;
353 flow_class = be32_to_cpu(grh->version_tclass_flow);
354 ah_attr->grh.flow_label = flow_class & 0xFFFFF;
355 ah_attr->grh.hop_limit = 0xFF;
356 ah_attr->grh.traffic_class = (flow_class >> 20) & 0xFF;
360 EXPORT_SYMBOL(ib_init_ah_from_wc);
362 struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc,
363 const struct ib_grh *grh, u8 port_num)
365 struct ib_ah_attr ah_attr;
368 ret = ib_init_ah_from_wc(pd->device, port_num, wc, grh, &ah_attr);
372 return ib_create_ah(pd, &ah_attr);
374 EXPORT_SYMBOL(ib_create_ah_from_wc);
376 int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
378 return ah->device->modify_ah ?
379 ah->device->modify_ah(ah, ah_attr) :
382 EXPORT_SYMBOL(ib_modify_ah);
384 int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
386 return ah->device->query_ah ?
387 ah->device->query_ah(ah, ah_attr) :
390 EXPORT_SYMBOL(ib_query_ah);
392 int ib_destroy_ah(struct ib_ah *ah)
398 ret = ah->device->destroy_ah(ah);
400 atomic_dec(&pd->usecnt);
404 EXPORT_SYMBOL(ib_destroy_ah);
406 /* Shared receive queues */
408 struct ib_srq *ib_create_srq(struct ib_pd *pd,
409 struct ib_srq_init_attr *srq_init_attr)
413 if (!pd->device->create_srq)
414 return ERR_PTR(-ENOSYS);
416 srq = pd->device->create_srq(pd, srq_init_attr, NULL);
419 srq->device = pd->device;
422 srq->event_handler = srq_init_attr->event_handler;
423 srq->srq_context = srq_init_attr->srq_context;
424 srq->srq_type = srq_init_attr->srq_type;
425 if (srq->srq_type == IB_SRQT_XRC) {
426 srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd;
427 srq->ext.xrc.cq = srq_init_attr->ext.xrc.cq;
428 atomic_inc(&srq->ext.xrc.xrcd->usecnt);
429 atomic_inc(&srq->ext.xrc.cq->usecnt);
431 atomic_inc(&pd->usecnt);
432 atomic_set(&srq->usecnt, 0);
437 EXPORT_SYMBOL(ib_create_srq);
439 int ib_modify_srq(struct ib_srq *srq,
440 struct ib_srq_attr *srq_attr,
441 enum ib_srq_attr_mask srq_attr_mask)
443 return srq->device->modify_srq ?
444 srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL) :
447 EXPORT_SYMBOL(ib_modify_srq);
449 int ib_query_srq(struct ib_srq *srq,
450 struct ib_srq_attr *srq_attr)
452 return srq->device->query_srq ?
453 srq->device->query_srq(srq, srq_attr) : -ENOSYS;
455 EXPORT_SYMBOL(ib_query_srq);
457 int ib_destroy_srq(struct ib_srq *srq)
460 enum ib_srq_type srq_type;
461 struct ib_xrcd *uninitialized_var(xrcd);
462 struct ib_cq *uninitialized_var(cq);
465 if (atomic_read(&srq->usecnt))
469 srq_type = srq->srq_type;
470 if (srq_type == IB_SRQT_XRC) {
471 xrcd = srq->ext.xrc.xrcd;
472 cq = srq->ext.xrc.cq;
475 ret = srq->device->destroy_srq(srq);
477 atomic_dec(&pd->usecnt);
478 if (srq_type == IB_SRQT_XRC) {
479 atomic_dec(&xrcd->usecnt);
480 atomic_dec(&cq->usecnt);
486 EXPORT_SYMBOL(ib_destroy_srq);
490 static void __ib_shared_qp_event_handler(struct ib_event *event, void *context)
492 struct ib_qp *qp = context;
495 spin_lock_irqsave(&qp->device->event_handler_lock, flags);
496 list_for_each_entry(event->element.qp, &qp->open_list, open_list)
497 if (event->element.qp->event_handler)
498 event->element.qp->event_handler(event, event->element.qp->qp_context);
499 spin_unlock_irqrestore(&qp->device->event_handler_lock, flags);
502 static void __ib_insert_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp)
504 mutex_lock(&xrcd->tgt_qp_mutex);
505 list_add(&qp->xrcd_list, &xrcd->tgt_qp_list);
506 mutex_unlock(&xrcd->tgt_qp_mutex);
509 static struct ib_qp *__ib_open_qp(struct ib_qp *real_qp,
510 void (*event_handler)(struct ib_event *, void *),
516 qp = kzalloc(sizeof *qp, GFP_KERNEL);
518 return ERR_PTR(-ENOMEM);
520 qp->real_qp = real_qp;
521 atomic_inc(&real_qp->usecnt);
522 qp->device = real_qp->device;
523 qp->event_handler = event_handler;
524 qp->qp_context = qp_context;
525 qp->qp_num = real_qp->qp_num;
526 qp->qp_type = real_qp->qp_type;
528 spin_lock_irqsave(&real_qp->device->event_handler_lock, flags);
529 list_add(&qp->open_list, &real_qp->open_list);
530 spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags);
535 struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd,
536 struct ib_qp_open_attr *qp_open_attr)
538 struct ib_qp *qp, *real_qp;
540 if (qp_open_attr->qp_type != IB_QPT_XRC_TGT)
541 return ERR_PTR(-EINVAL);
543 qp = ERR_PTR(-EINVAL);
544 mutex_lock(&xrcd->tgt_qp_mutex);
545 list_for_each_entry(real_qp, &xrcd->tgt_qp_list, xrcd_list) {
546 if (real_qp->qp_num == qp_open_attr->qp_num) {
547 qp = __ib_open_qp(real_qp, qp_open_attr->event_handler,
548 qp_open_attr->qp_context);
552 mutex_unlock(&xrcd->tgt_qp_mutex);
555 EXPORT_SYMBOL(ib_open_qp);
557 struct ib_qp *ib_create_qp(struct ib_pd *pd,
558 struct ib_qp_init_attr *qp_init_attr)
560 struct ib_qp *qp, *real_qp;
561 struct ib_device *device;
563 device = pd ? pd->device : qp_init_attr->xrcd->device;
564 qp = device->create_qp(pd, qp_init_attr, NULL);
570 qp->qp_type = qp_init_attr->qp_type;
572 atomic_set(&qp->usecnt, 0);
573 if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) {
574 qp->event_handler = __ib_shared_qp_event_handler;
577 qp->send_cq = qp->recv_cq = NULL;
579 qp->xrcd = qp_init_attr->xrcd;
580 atomic_inc(&qp_init_attr->xrcd->usecnt);
581 INIT_LIST_HEAD(&qp->open_list);
584 qp = __ib_open_qp(real_qp, qp_init_attr->event_handler,
585 qp_init_attr->qp_context);
587 __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp);
589 real_qp->device->destroy_qp(real_qp);
591 qp->event_handler = qp_init_attr->event_handler;
592 qp->qp_context = qp_init_attr->qp_context;
593 if (qp_init_attr->qp_type == IB_QPT_XRC_INI) {
597 qp->recv_cq = qp_init_attr->recv_cq;
598 atomic_inc(&qp_init_attr->recv_cq->usecnt);
599 qp->srq = qp_init_attr->srq;
601 atomic_inc(&qp_init_attr->srq->usecnt);
605 qp->send_cq = qp_init_attr->send_cq;
608 atomic_inc(&pd->usecnt);
609 atomic_inc(&qp_init_attr->send_cq->usecnt);
615 EXPORT_SYMBOL(ib_create_qp);
617 static const struct {
619 enum ib_qp_attr_mask req_param[IB_QPT_MAX];
620 enum ib_qp_attr_mask req_param_add_eth[IB_QPT_MAX];
621 enum ib_qp_attr_mask opt_param[IB_QPT_MAX];
622 enum ib_qp_attr_mask opt_param_add_eth[IB_QPT_MAX];
623 } qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = {
625 [IB_QPS_RESET] = { .valid = 1 },
629 [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
632 [IB_QPT_RAW_PACKET] = IB_QP_PORT,
633 [IB_QPT_UC] = (IB_QP_PKEY_INDEX |
636 [IB_QPT_RC] = (IB_QP_PKEY_INDEX |
639 [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX |
642 [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX |
645 [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
647 [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
653 [IB_QPS_RESET] = { .valid = 1 },
654 [IB_QPS_ERR] = { .valid = 1 },
658 [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
661 [IB_QPT_UC] = (IB_QP_PKEY_INDEX |
664 [IB_QPT_RC] = (IB_QP_PKEY_INDEX |
667 [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX |
670 [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX |
673 [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
675 [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
682 [IB_QPT_UC] = (IB_QP_AV |
686 [IB_QPT_RC] = (IB_QP_AV |
690 IB_QP_MAX_DEST_RD_ATOMIC |
691 IB_QP_MIN_RNR_TIMER),
692 [IB_QPT_XRC_INI] = (IB_QP_AV |
696 [IB_QPT_XRC_TGT] = (IB_QP_AV |
700 IB_QP_MAX_DEST_RD_ATOMIC |
701 IB_QP_MIN_RNR_TIMER),
703 .req_param_add_eth = {
704 [IB_QPT_RC] = (IB_QP_SMAC),
705 [IB_QPT_UC] = (IB_QP_SMAC),
706 [IB_QPT_XRC_INI] = (IB_QP_SMAC),
707 [IB_QPT_XRC_TGT] = (IB_QP_SMAC)
710 [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
712 [IB_QPT_UC] = (IB_QP_ALT_PATH |
715 [IB_QPT_RC] = (IB_QP_ALT_PATH |
718 [IB_QPT_XRC_INI] = (IB_QP_ALT_PATH |
721 [IB_QPT_XRC_TGT] = (IB_QP_ALT_PATH |
724 [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
726 [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
729 .opt_param_add_eth = {
730 [IB_QPT_RC] = (IB_QP_ALT_SMAC |
733 [IB_QPT_UC] = (IB_QP_ALT_SMAC |
736 [IB_QPT_XRC_INI] = (IB_QP_ALT_SMAC |
739 [IB_QPT_XRC_TGT] = (IB_QP_ALT_SMAC |
746 [IB_QPS_RESET] = { .valid = 1 },
747 [IB_QPS_ERR] = { .valid = 1 },
751 [IB_QPT_UD] = IB_QP_SQ_PSN,
752 [IB_QPT_UC] = IB_QP_SQ_PSN,
753 [IB_QPT_RC] = (IB_QP_TIMEOUT |
757 IB_QP_MAX_QP_RD_ATOMIC),
758 [IB_QPT_XRC_INI] = (IB_QP_TIMEOUT |
762 IB_QP_MAX_QP_RD_ATOMIC),
763 [IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT |
765 [IB_QPT_SMI] = IB_QP_SQ_PSN,
766 [IB_QPT_GSI] = IB_QP_SQ_PSN,
769 [IB_QPT_UD] = (IB_QP_CUR_STATE |
771 [IB_QPT_UC] = (IB_QP_CUR_STATE |
774 IB_QP_PATH_MIG_STATE),
775 [IB_QPT_RC] = (IB_QP_CUR_STATE |
778 IB_QP_MIN_RNR_TIMER |
779 IB_QP_PATH_MIG_STATE),
780 [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE |
783 IB_QP_PATH_MIG_STATE),
784 [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE |
787 IB_QP_MIN_RNR_TIMER |
788 IB_QP_PATH_MIG_STATE),
789 [IB_QPT_SMI] = (IB_QP_CUR_STATE |
791 [IB_QPT_GSI] = (IB_QP_CUR_STATE |
797 [IB_QPS_RESET] = { .valid = 1 },
798 [IB_QPS_ERR] = { .valid = 1 },
802 [IB_QPT_UD] = (IB_QP_CUR_STATE |
804 [IB_QPT_UC] = (IB_QP_CUR_STATE |
807 IB_QP_PATH_MIG_STATE),
808 [IB_QPT_RC] = (IB_QP_CUR_STATE |
811 IB_QP_PATH_MIG_STATE |
812 IB_QP_MIN_RNR_TIMER),
813 [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE |
816 IB_QP_PATH_MIG_STATE),
817 [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE |
820 IB_QP_PATH_MIG_STATE |
821 IB_QP_MIN_RNR_TIMER),
822 [IB_QPT_SMI] = (IB_QP_CUR_STATE |
824 [IB_QPT_GSI] = (IB_QP_CUR_STATE |
831 [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY,
832 [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY,
833 [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY,
834 [IB_QPT_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY,
835 [IB_QPT_XRC_TGT] = IB_QP_EN_SQD_ASYNC_NOTIFY, /* ??? */
836 [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY,
837 [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY
842 [IB_QPS_RESET] = { .valid = 1 },
843 [IB_QPS_ERR] = { .valid = 1 },
847 [IB_QPT_UD] = (IB_QP_CUR_STATE |
849 [IB_QPT_UC] = (IB_QP_CUR_STATE |
852 IB_QP_PATH_MIG_STATE),
853 [IB_QPT_RC] = (IB_QP_CUR_STATE |
856 IB_QP_MIN_RNR_TIMER |
857 IB_QP_PATH_MIG_STATE),
858 [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE |
861 IB_QP_PATH_MIG_STATE),
862 [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE |
865 IB_QP_MIN_RNR_TIMER |
866 IB_QP_PATH_MIG_STATE),
867 [IB_QPT_SMI] = (IB_QP_CUR_STATE |
869 [IB_QPT_GSI] = (IB_QP_CUR_STATE |
876 [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
878 [IB_QPT_UC] = (IB_QP_AV |
882 IB_QP_PATH_MIG_STATE),
883 [IB_QPT_RC] = (IB_QP_PORT |
888 IB_QP_MAX_QP_RD_ATOMIC |
889 IB_QP_MAX_DEST_RD_ATOMIC |
893 IB_QP_MIN_RNR_TIMER |
894 IB_QP_PATH_MIG_STATE),
895 [IB_QPT_XRC_INI] = (IB_QP_PORT |
900 IB_QP_MAX_QP_RD_ATOMIC |
904 IB_QP_PATH_MIG_STATE),
905 [IB_QPT_XRC_TGT] = (IB_QP_PORT |
908 IB_QP_MAX_DEST_RD_ATOMIC |
912 IB_QP_MIN_RNR_TIMER |
913 IB_QP_PATH_MIG_STATE),
914 [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
916 [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
922 [IB_QPS_RESET] = { .valid = 1 },
923 [IB_QPS_ERR] = { .valid = 1 },
927 [IB_QPT_UD] = (IB_QP_CUR_STATE |
929 [IB_QPT_UC] = (IB_QP_CUR_STATE |
931 [IB_QPT_SMI] = (IB_QP_CUR_STATE |
933 [IB_QPT_GSI] = (IB_QP_CUR_STATE |
939 [IB_QPS_RESET] = { .valid = 1 },
940 [IB_QPS_ERR] = { .valid = 1 }
944 int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
945 enum ib_qp_type type, enum ib_qp_attr_mask mask,
946 enum rdma_link_layer ll)
948 enum ib_qp_attr_mask req_param, opt_param;
950 if (cur_state < 0 || cur_state > IB_QPS_ERR ||
951 next_state < 0 || next_state > IB_QPS_ERR)
954 if (mask & IB_QP_CUR_STATE &&
955 cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS &&
956 cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE)
959 if (!qp_state_table[cur_state][next_state].valid)
962 req_param = qp_state_table[cur_state][next_state].req_param[type];
963 opt_param = qp_state_table[cur_state][next_state].opt_param[type];
965 if (ll == IB_LINK_LAYER_ETHERNET) {
966 req_param |= qp_state_table[cur_state][next_state].
967 req_param_add_eth[type];
968 opt_param |= qp_state_table[cur_state][next_state].
969 opt_param_add_eth[type];
972 if ((mask & req_param) != req_param)
975 if (mask & ~(req_param | opt_param | IB_QP_STATE))
980 EXPORT_SYMBOL(ib_modify_qp_is_ok);
982 int ib_resolve_eth_l2_attrs(struct ib_qp *qp,
983 struct ib_qp_attr *qp_attr, int *qp_attr_mask)
988 if ((*qp_attr_mask & IB_QP_AV) &&
989 (rdma_cap_eth_ah(qp->device, qp_attr->ah_attr.port_num))) {
990 ret = ib_query_gid(qp->device, qp_attr->ah_attr.port_num,
991 qp_attr->ah_attr.grh.sgid_index, &sgid);
994 if (rdma_link_local_addr((struct in6_addr *)qp_attr->ah_attr.grh.dgid.raw)) {
995 rdma_get_ll_mac((struct in6_addr *)qp_attr->ah_attr.grh.dgid.raw, qp_attr->ah_attr.dmac);
996 rdma_get_ll_mac((struct in6_addr *)sgid.raw, qp_attr->smac);
997 if (!(*qp_attr_mask & IB_QP_VID))
998 qp_attr->vlan_id = rdma_get_vlan_id(&sgid);
1000 ret = rdma_addr_find_dmac_by_grh(&sgid, &qp_attr->ah_attr.grh.dgid,
1001 qp_attr->ah_attr.dmac, &qp_attr->vlan_id);
1004 ret = rdma_addr_find_smac_by_sgid(&sgid, qp_attr->smac, NULL);
1008 *qp_attr_mask |= IB_QP_SMAC;
1009 if (qp_attr->vlan_id < 0xFFFF)
1010 *qp_attr_mask |= IB_QP_VID;
1015 EXPORT_SYMBOL(ib_resolve_eth_l2_attrs);
1018 int ib_modify_qp(struct ib_qp *qp,
1019 struct ib_qp_attr *qp_attr,
1024 ret = ib_resolve_eth_l2_attrs(qp, qp_attr, &qp_attr_mask);
1028 return qp->device->modify_qp(qp->real_qp, qp_attr, qp_attr_mask, NULL);
1030 EXPORT_SYMBOL(ib_modify_qp);
1032 int ib_query_qp(struct ib_qp *qp,
1033 struct ib_qp_attr *qp_attr,
1035 struct ib_qp_init_attr *qp_init_attr)
1037 return qp->device->query_qp ?
1038 qp->device->query_qp(qp->real_qp, qp_attr, qp_attr_mask, qp_init_attr) :
1041 EXPORT_SYMBOL(ib_query_qp);
1043 int ib_close_qp(struct ib_qp *qp)
1045 struct ib_qp *real_qp;
1046 unsigned long flags;
1048 real_qp = qp->real_qp;
1052 spin_lock_irqsave(&real_qp->device->event_handler_lock, flags);
1053 list_del(&qp->open_list);
1054 spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags);
1056 atomic_dec(&real_qp->usecnt);
1061 EXPORT_SYMBOL(ib_close_qp);
1063 static int __ib_destroy_shared_qp(struct ib_qp *qp)
1065 struct ib_xrcd *xrcd;
1066 struct ib_qp *real_qp;
1069 real_qp = qp->real_qp;
1070 xrcd = real_qp->xrcd;
1072 mutex_lock(&xrcd->tgt_qp_mutex);
1074 if (atomic_read(&real_qp->usecnt) == 0)
1075 list_del(&real_qp->xrcd_list);
1078 mutex_unlock(&xrcd->tgt_qp_mutex);
1081 ret = ib_destroy_qp(real_qp);
1083 atomic_dec(&xrcd->usecnt);
1085 __ib_insert_xrcd_qp(xrcd, real_qp);
1091 int ib_destroy_qp(struct ib_qp *qp)
1094 struct ib_cq *scq, *rcq;
1098 if (atomic_read(&qp->usecnt))
1101 if (qp->real_qp != qp)
1102 return __ib_destroy_shared_qp(qp);
1109 ret = qp->device->destroy_qp(qp);
1112 atomic_dec(&pd->usecnt);
1114 atomic_dec(&scq->usecnt);
1116 atomic_dec(&rcq->usecnt);
1118 atomic_dec(&srq->usecnt);
1123 EXPORT_SYMBOL(ib_destroy_qp);
1125 /* Completion queues */
1127 struct ib_cq *ib_create_cq(struct ib_device *device,
1128 ib_comp_handler comp_handler,
1129 void (*event_handler)(struct ib_event *, void *),
1131 const struct ib_cq_init_attr *cq_attr)
1135 cq = device->create_cq(device, cq_attr, NULL, NULL);
1138 cq->device = device;
1140 cq->comp_handler = comp_handler;
1141 cq->event_handler = event_handler;
1142 cq->cq_context = cq_context;
1143 atomic_set(&cq->usecnt, 0);
1148 EXPORT_SYMBOL(ib_create_cq);
1150 int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period)
1152 return cq->device->modify_cq ?
1153 cq->device->modify_cq(cq, cq_count, cq_period) : -ENOSYS;
1155 EXPORT_SYMBOL(ib_modify_cq);
1157 int ib_destroy_cq(struct ib_cq *cq)
1159 if (atomic_read(&cq->usecnt))
1162 return cq->device->destroy_cq(cq);
1164 EXPORT_SYMBOL(ib_destroy_cq);
1166 int ib_resize_cq(struct ib_cq *cq, int cqe)
1168 return cq->device->resize_cq ?
1169 cq->device->resize_cq(cq, cqe, NULL) : -ENOSYS;
1171 EXPORT_SYMBOL(ib_resize_cq);
1173 /* Memory regions */
1175 struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags)
1180 err = ib_check_mr_access(mr_access_flags);
1182 return ERR_PTR(err);
1184 mr = pd->device->get_dma_mr(pd, mr_access_flags);
1187 mr->device = pd->device;
1190 atomic_inc(&pd->usecnt);
1191 atomic_set(&mr->usecnt, 0);
1196 EXPORT_SYMBOL(ib_get_dma_mr);
1198 int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr)
1200 return mr->device->query_mr ?
1201 mr->device->query_mr(mr, mr_attr) : -ENOSYS;
1203 EXPORT_SYMBOL(ib_query_mr);
1205 int ib_dereg_mr(struct ib_mr *mr)
1210 if (atomic_read(&mr->usecnt))
1214 ret = mr->device->dereg_mr(mr);
1216 atomic_dec(&pd->usecnt);
1220 EXPORT_SYMBOL(ib_dereg_mr);
1223 * ib_alloc_mr() - Allocates a memory region
1224 * @pd: protection domain associated with the region
1225 * @mr_type: memory region type
1226 * @max_num_sg: maximum sg entries available for registration.
1229 * Memory registeration page/sg lists must not exceed max_num_sg.
1230 * For mr_type IB_MR_TYPE_MEM_REG, the total length cannot exceed
1231 * max_num_sg * used_page_size.
1234 struct ib_mr *ib_alloc_mr(struct ib_pd *pd,
1235 enum ib_mr_type mr_type,
1240 if (!pd->device->alloc_mr)
1241 return ERR_PTR(-ENOSYS);
1243 mr = pd->device->alloc_mr(pd, mr_type, max_num_sg);
1245 mr->device = pd->device;
1248 atomic_inc(&pd->usecnt);
1249 atomic_set(&mr->usecnt, 0);
1254 EXPORT_SYMBOL(ib_alloc_mr);
1256 struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list(struct ib_device *device,
1257 int max_page_list_len)
1259 struct ib_fast_reg_page_list *page_list;
1261 if (!device->alloc_fast_reg_page_list)
1262 return ERR_PTR(-ENOSYS);
1264 page_list = device->alloc_fast_reg_page_list(device, max_page_list_len);
1266 if (!IS_ERR(page_list)) {
1267 page_list->device = device;
1268 page_list->max_page_list_len = max_page_list_len;
1273 EXPORT_SYMBOL(ib_alloc_fast_reg_page_list);
1275 void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list)
1277 page_list->device->free_fast_reg_page_list(page_list);
1279 EXPORT_SYMBOL(ib_free_fast_reg_page_list);
1281 /* Memory windows */
1283 struct ib_mw *ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type)
1287 if (!pd->device->alloc_mw)
1288 return ERR_PTR(-ENOSYS);
1290 mw = pd->device->alloc_mw(pd, type);
1292 mw->device = pd->device;
1296 atomic_inc(&pd->usecnt);
1301 EXPORT_SYMBOL(ib_alloc_mw);
1303 int ib_dealloc_mw(struct ib_mw *mw)
1309 ret = mw->device->dealloc_mw(mw);
1311 atomic_dec(&pd->usecnt);
1315 EXPORT_SYMBOL(ib_dealloc_mw);
1317 /* "Fast" memory regions */
1319 struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
1320 int mr_access_flags,
1321 struct ib_fmr_attr *fmr_attr)
1325 if (!pd->device->alloc_fmr)
1326 return ERR_PTR(-ENOSYS);
1328 fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr);
1330 fmr->device = pd->device;
1332 atomic_inc(&pd->usecnt);
1337 EXPORT_SYMBOL(ib_alloc_fmr);
1339 int ib_unmap_fmr(struct list_head *fmr_list)
1343 if (list_empty(fmr_list))
1346 fmr = list_entry(fmr_list->next, struct ib_fmr, list);
1347 return fmr->device->unmap_fmr(fmr_list);
1349 EXPORT_SYMBOL(ib_unmap_fmr);
1351 int ib_dealloc_fmr(struct ib_fmr *fmr)
1357 ret = fmr->device->dealloc_fmr(fmr);
1359 atomic_dec(&pd->usecnt);
1363 EXPORT_SYMBOL(ib_dealloc_fmr);
1365 /* Multicast groups */
1367 int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
1371 if (!qp->device->attach_mcast)
1373 if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
1376 ret = qp->device->attach_mcast(qp, gid, lid);
1378 atomic_inc(&qp->usecnt);
1381 EXPORT_SYMBOL(ib_attach_mcast);
1383 int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
1387 if (!qp->device->detach_mcast)
1389 if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
1392 ret = qp->device->detach_mcast(qp, gid, lid);
1394 atomic_dec(&qp->usecnt);
1397 EXPORT_SYMBOL(ib_detach_mcast);
1399 struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device)
1401 struct ib_xrcd *xrcd;
1403 if (!device->alloc_xrcd)
1404 return ERR_PTR(-ENOSYS);
1406 xrcd = device->alloc_xrcd(device, NULL, NULL);
1407 if (!IS_ERR(xrcd)) {
1408 xrcd->device = device;
1410 atomic_set(&xrcd->usecnt, 0);
1411 mutex_init(&xrcd->tgt_qp_mutex);
1412 INIT_LIST_HEAD(&xrcd->tgt_qp_list);
1417 EXPORT_SYMBOL(ib_alloc_xrcd);
1419 int ib_dealloc_xrcd(struct ib_xrcd *xrcd)
1424 if (atomic_read(&xrcd->usecnt))
1427 while (!list_empty(&xrcd->tgt_qp_list)) {
1428 qp = list_entry(xrcd->tgt_qp_list.next, struct ib_qp, xrcd_list);
1429 ret = ib_destroy_qp(qp);
1434 return xrcd->device->dealloc_xrcd(xrcd);
1436 EXPORT_SYMBOL(ib_dealloc_xrcd);
1438 struct ib_flow *ib_create_flow(struct ib_qp *qp,
1439 struct ib_flow_attr *flow_attr,
1442 struct ib_flow *flow_id;
1443 if (!qp->device->create_flow)
1444 return ERR_PTR(-ENOSYS);
1446 flow_id = qp->device->create_flow(qp, flow_attr, domain);
1447 if (!IS_ERR(flow_id))
1448 atomic_inc(&qp->usecnt);
1451 EXPORT_SYMBOL(ib_create_flow);
1453 int ib_destroy_flow(struct ib_flow *flow_id)
1456 struct ib_qp *qp = flow_id->qp;
1458 err = qp->device->destroy_flow(flow_id);
1460 atomic_dec(&qp->usecnt);
1463 EXPORT_SYMBOL(ib_destroy_flow);
1465 int ib_check_mr_status(struct ib_mr *mr, u32 check_mask,
1466 struct ib_mr_status *mr_status)
1468 return mr->device->check_mr_status ?
1469 mr->device->check_mr_status(mr, check_mask, mr_status) : -ENOSYS;
1471 EXPORT_SYMBOL(ib_check_mr_status);