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 */
216 struct ib_pd *ib_alloc_pd(struct ib_device *device)
220 pd = device->alloc_pd(device, NULL, NULL);
225 atomic_set(&pd->usecnt, 0);
230 EXPORT_SYMBOL(ib_alloc_pd);
232 int ib_dealloc_pd(struct ib_pd *pd)
234 if (atomic_read(&pd->usecnt))
237 return pd->device->dealloc_pd(pd);
239 EXPORT_SYMBOL(ib_dealloc_pd);
241 /* Address handles */
243 struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
247 ah = pd->device->create_ah(pd, ah_attr);
250 ah->device = pd->device;
253 atomic_inc(&pd->usecnt);
258 EXPORT_SYMBOL(ib_create_ah);
260 int ib_init_ah_from_wc(struct ib_device *device, u8 port_num,
261 const struct ib_wc *wc, const struct ib_grh *grh,
262 struct ib_ah_attr *ah_attr)
268 memset(ah_attr, 0, sizeof *ah_attr);
269 if (rdma_cap_eth_ah(device, port_num)) {
270 if (!(wc->wc_flags & IB_WC_GRH))
273 if (wc->wc_flags & IB_WC_WITH_SMAC &&
274 wc->wc_flags & IB_WC_WITH_VLAN) {
275 memcpy(ah_attr->dmac, wc->smac, ETH_ALEN);
276 ah_attr->vlan_id = wc->vlan_id;
278 ret = rdma_addr_find_dmac_by_grh(&grh->dgid, &grh->sgid,
279 ah_attr->dmac, &ah_attr->vlan_id);
284 ah_attr->vlan_id = 0xffff;
287 ah_attr->dlid = wc->slid;
288 ah_attr->sl = wc->sl;
289 ah_attr->src_path_bits = wc->dlid_path_bits;
290 ah_attr->port_num = port_num;
292 if (wc->wc_flags & IB_WC_GRH) {
293 ah_attr->ah_flags = IB_AH_GRH;
294 ah_attr->grh.dgid = grh->sgid;
296 ret = ib_find_cached_gid(device, &grh->dgid, &port_num,
301 ah_attr->grh.sgid_index = (u8) gid_index;
302 flow_class = be32_to_cpu(grh->version_tclass_flow);
303 ah_attr->grh.flow_label = flow_class & 0xFFFFF;
304 ah_attr->grh.hop_limit = 0xFF;
305 ah_attr->grh.traffic_class = (flow_class >> 20) & 0xFF;
309 EXPORT_SYMBOL(ib_init_ah_from_wc);
311 struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, const struct ib_wc *wc,
312 const struct ib_grh *grh, u8 port_num)
314 struct ib_ah_attr ah_attr;
317 ret = ib_init_ah_from_wc(pd->device, port_num, wc, grh, &ah_attr);
321 return ib_create_ah(pd, &ah_attr);
323 EXPORT_SYMBOL(ib_create_ah_from_wc);
325 int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
327 return ah->device->modify_ah ?
328 ah->device->modify_ah(ah, ah_attr) :
331 EXPORT_SYMBOL(ib_modify_ah);
333 int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
335 return ah->device->query_ah ?
336 ah->device->query_ah(ah, ah_attr) :
339 EXPORT_SYMBOL(ib_query_ah);
341 int ib_destroy_ah(struct ib_ah *ah)
347 ret = ah->device->destroy_ah(ah);
349 atomic_dec(&pd->usecnt);
353 EXPORT_SYMBOL(ib_destroy_ah);
355 /* Shared receive queues */
357 struct ib_srq *ib_create_srq(struct ib_pd *pd,
358 struct ib_srq_init_attr *srq_init_attr)
362 if (!pd->device->create_srq)
363 return ERR_PTR(-ENOSYS);
365 srq = pd->device->create_srq(pd, srq_init_attr, NULL);
368 srq->device = pd->device;
371 srq->event_handler = srq_init_attr->event_handler;
372 srq->srq_context = srq_init_attr->srq_context;
373 srq->srq_type = srq_init_attr->srq_type;
374 if (srq->srq_type == IB_SRQT_XRC) {
375 srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd;
376 srq->ext.xrc.cq = srq_init_attr->ext.xrc.cq;
377 atomic_inc(&srq->ext.xrc.xrcd->usecnt);
378 atomic_inc(&srq->ext.xrc.cq->usecnt);
380 atomic_inc(&pd->usecnt);
381 atomic_set(&srq->usecnt, 0);
386 EXPORT_SYMBOL(ib_create_srq);
388 int ib_modify_srq(struct ib_srq *srq,
389 struct ib_srq_attr *srq_attr,
390 enum ib_srq_attr_mask srq_attr_mask)
392 return srq->device->modify_srq ?
393 srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL) :
396 EXPORT_SYMBOL(ib_modify_srq);
398 int ib_query_srq(struct ib_srq *srq,
399 struct ib_srq_attr *srq_attr)
401 return srq->device->query_srq ?
402 srq->device->query_srq(srq, srq_attr) : -ENOSYS;
404 EXPORT_SYMBOL(ib_query_srq);
406 int ib_destroy_srq(struct ib_srq *srq)
409 enum ib_srq_type srq_type;
410 struct ib_xrcd *uninitialized_var(xrcd);
411 struct ib_cq *uninitialized_var(cq);
414 if (atomic_read(&srq->usecnt))
418 srq_type = srq->srq_type;
419 if (srq_type == IB_SRQT_XRC) {
420 xrcd = srq->ext.xrc.xrcd;
421 cq = srq->ext.xrc.cq;
424 ret = srq->device->destroy_srq(srq);
426 atomic_dec(&pd->usecnt);
427 if (srq_type == IB_SRQT_XRC) {
428 atomic_dec(&xrcd->usecnt);
429 atomic_dec(&cq->usecnt);
435 EXPORT_SYMBOL(ib_destroy_srq);
439 static void __ib_shared_qp_event_handler(struct ib_event *event, void *context)
441 struct ib_qp *qp = context;
444 spin_lock_irqsave(&qp->device->event_handler_lock, flags);
445 list_for_each_entry(event->element.qp, &qp->open_list, open_list)
446 if (event->element.qp->event_handler)
447 event->element.qp->event_handler(event, event->element.qp->qp_context);
448 spin_unlock_irqrestore(&qp->device->event_handler_lock, flags);
451 static void __ib_insert_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp)
453 mutex_lock(&xrcd->tgt_qp_mutex);
454 list_add(&qp->xrcd_list, &xrcd->tgt_qp_list);
455 mutex_unlock(&xrcd->tgt_qp_mutex);
458 static struct ib_qp *__ib_open_qp(struct ib_qp *real_qp,
459 void (*event_handler)(struct ib_event *, void *),
465 qp = kzalloc(sizeof *qp, GFP_KERNEL);
467 return ERR_PTR(-ENOMEM);
469 qp->real_qp = real_qp;
470 atomic_inc(&real_qp->usecnt);
471 qp->device = real_qp->device;
472 qp->event_handler = event_handler;
473 qp->qp_context = qp_context;
474 qp->qp_num = real_qp->qp_num;
475 qp->qp_type = real_qp->qp_type;
477 spin_lock_irqsave(&real_qp->device->event_handler_lock, flags);
478 list_add(&qp->open_list, &real_qp->open_list);
479 spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags);
484 struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd,
485 struct ib_qp_open_attr *qp_open_attr)
487 struct ib_qp *qp, *real_qp;
489 if (qp_open_attr->qp_type != IB_QPT_XRC_TGT)
490 return ERR_PTR(-EINVAL);
492 qp = ERR_PTR(-EINVAL);
493 mutex_lock(&xrcd->tgt_qp_mutex);
494 list_for_each_entry(real_qp, &xrcd->tgt_qp_list, xrcd_list) {
495 if (real_qp->qp_num == qp_open_attr->qp_num) {
496 qp = __ib_open_qp(real_qp, qp_open_attr->event_handler,
497 qp_open_attr->qp_context);
501 mutex_unlock(&xrcd->tgt_qp_mutex);
504 EXPORT_SYMBOL(ib_open_qp);
506 struct ib_qp *ib_create_qp(struct ib_pd *pd,
507 struct ib_qp_init_attr *qp_init_attr)
509 struct ib_qp *qp, *real_qp;
510 struct ib_device *device;
512 device = pd ? pd->device : qp_init_attr->xrcd->device;
513 qp = device->create_qp(pd, qp_init_attr, NULL);
519 qp->qp_type = qp_init_attr->qp_type;
521 atomic_set(&qp->usecnt, 0);
522 if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) {
523 qp->event_handler = __ib_shared_qp_event_handler;
526 qp->send_cq = qp->recv_cq = NULL;
528 qp->xrcd = qp_init_attr->xrcd;
529 atomic_inc(&qp_init_attr->xrcd->usecnt);
530 INIT_LIST_HEAD(&qp->open_list);
533 qp = __ib_open_qp(real_qp, qp_init_attr->event_handler,
534 qp_init_attr->qp_context);
536 __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp);
538 real_qp->device->destroy_qp(real_qp);
540 qp->event_handler = qp_init_attr->event_handler;
541 qp->qp_context = qp_init_attr->qp_context;
542 if (qp_init_attr->qp_type == IB_QPT_XRC_INI) {
546 qp->recv_cq = qp_init_attr->recv_cq;
547 atomic_inc(&qp_init_attr->recv_cq->usecnt);
548 qp->srq = qp_init_attr->srq;
550 atomic_inc(&qp_init_attr->srq->usecnt);
554 qp->send_cq = qp_init_attr->send_cq;
557 atomic_inc(&pd->usecnt);
558 atomic_inc(&qp_init_attr->send_cq->usecnt);
564 EXPORT_SYMBOL(ib_create_qp);
566 static const struct {
568 enum ib_qp_attr_mask req_param[IB_QPT_MAX];
569 enum ib_qp_attr_mask req_param_add_eth[IB_QPT_MAX];
570 enum ib_qp_attr_mask opt_param[IB_QPT_MAX];
571 enum ib_qp_attr_mask opt_param_add_eth[IB_QPT_MAX];
572 } qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = {
574 [IB_QPS_RESET] = { .valid = 1 },
578 [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
581 [IB_QPT_RAW_PACKET] = IB_QP_PORT,
582 [IB_QPT_UC] = (IB_QP_PKEY_INDEX |
585 [IB_QPT_RC] = (IB_QP_PKEY_INDEX |
588 [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX |
591 [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX |
594 [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
596 [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
602 [IB_QPS_RESET] = { .valid = 1 },
603 [IB_QPS_ERR] = { .valid = 1 },
607 [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
610 [IB_QPT_UC] = (IB_QP_PKEY_INDEX |
613 [IB_QPT_RC] = (IB_QP_PKEY_INDEX |
616 [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX |
619 [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX |
622 [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
624 [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
631 [IB_QPT_UC] = (IB_QP_AV |
635 [IB_QPT_RC] = (IB_QP_AV |
639 IB_QP_MAX_DEST_RD_ATOMIC |
640 IB_QP_MIN_RNR_TIMER),
641 [IB_QPT_XRC_INI] = (IB_QP_AV |
645 [IB_QPT_XRC_TGT] = (IB_QP_AV |
649 IB_QP_MAX_DEST_RD_ATOMIC |
650 IB_QP_MIN_RNR_TIMER),
652 .req_param_add_eth = {
653 [IB_QPT_RC] = (IB_QP_SMAC),
654 [IB_QPT_UC] = (IB_QP_SMAC),
655 [IB_QPT_XRC_INI] = (IB_QP_SMAC),
656 [IB_QPT_XRC_TGT] = (IB_QP_SMAC)
659 [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
661 [IB_QPT_UC] = (IB_QP_ALT_PATH |
664 [IB_QPT_RC] = (IB_QP_ALT_PATH |
667 [IB_QPT_XRC_INI] = (IB_QP_ALT_PATH |
670 [IB_QPT_XRC_TGT] = (IB_QP_ALT_PATH |
673 [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
675 [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
678 .opt_param_add_eth = {
679 [IB_QPT_RC] = (IB_QP_ALT_SMAC |
682 [IB_QPT_UC] = (IB_QP_ALT_SMAC |
685 [IB_QPT_XRC_INI] = (IB_QP_ALT_SMAC |
688 [IB_QPT_XRC_TGT] = (IB_QP_ALT_SMAC |
695 [IB_QPS_RESET] = { .valid = 1 },
696 [IB_QPS_ERR] = { .valid = 1 },
700 [IB_QPT_UD] = IB_QP_SQ_PSN,
701 [IB_QPT_UC] = IB_QP_SQ_PSN,
702 [IB_QPT_RC] = (IB_QP_TIMEOUT |
706 IB_QP_MAX_QP_RD_ATOMIC),
707 [IB_QPT_XRC_INI] = (IB_QP_TIMEOUT |
711 IB_QP_MAX_QP_RD_ATOMIC),
712 [IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT |
714 [IB_QPT_SMI] = IB_QP_SQ_PSN,
715 [IB_QPT_GSI] = IB_QP_SQ_PSN,
718 [IB_QPT_UD] = (IB_QP_CUR_STATE |
720 [IB_QPT_UC] = (IB_QP_CUR_STATE |
723 IB_QP_PATH_MIG_STATE),
724 [IB_QPT_RC] = (IB_QP_CUR_STATE |
727 IB_QP_MIN_RNR_TIMER |
728 IB_QP_PATH_MIG_STATE),
729 [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE |
732 IB_QP_PATH_MIG_STATE),
733 [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE |
736 IB_QP_MIN_RNR_TIMER |
737 IB_QP_PATH_MIG_STATE),
738 [IB_QPT_SMI] = (IB_QP_CUR_STATE |
740 [IB_QPT_GSI] = (IB_QP_CUR_STATE |
746 [IB_QPS_RESET] = { .valid = 1 },
747 [IB_QPS_ERR] = { .valid = 1 },
751 [IB_QPT_UD] = (IB_QP_CUR_STATE |
753 [IB_QPT_UC] = (IB_QP_CUR_STATE |
756 IB_QP_PATH_MIG_STATE),
757 [IB_QPT_RC] = (IB_QP_CUR_STATE |
760 IB_QP_PATH_MIG_STATE |
761 IB_QP_MIN_RNR_TIMER),
762 [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE |
765 IB_QP_PATH_MIG_STATE),
766 [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE |
769 IB_QP_PATH_MIG_STATE |
770 IB_QP_MIN_RNR_TIMER),
771 [IB_QPT_SMI] = (IB_QP_CUR_STATE |
773 [IB_QPT_GSI] = (IB_QP_CUR_STATE |
780 [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY,
781 [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY,
782 [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY,
783 [IB_QPT_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY,
784 [IB_QPT_XRC_TGT] = IB_QP_EN_SQD_ASYNC_NOTIFY, /* ??? */
785 [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY,
786 [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY
791 [IB_QPS_RESET] = { .valid = 1 },
792 [IB_QPS_ERR] = { .valid = 1 },
796 [IB_QPT_UD] = (IB_QP_CUR_STATE |
798 [IB_QPT_UC] = (IB_QP_CUR_STATE |
801 IB_QP_PATH_MIG_STATE),
802 [IB_QPT_RC] = (IB_QP_CUR_STATE |
805 IB_QP_MIN_RNR_TIMER |
806 IB_QP_PATH_MIG_STATE),
807 [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE |
810 IB_QP_PATH_MIG_STATE),
811 [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE |
814 IB_QP_MIN_RNR_TIMER |
815 IB_QP_PATH_MIG_STATE),
816 [IB_QPT_SMI] = (IB_QP_CUR_STATE |
818 [IB_QPT_GSI] = (IB_QP_CUR_STATE |
825 [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
827 [IB_QPT_UC] = (IB_QP_AV |
831 IB_QP_PATH_MIG_STATE),
832 [IB_QPT_RC] = (IB_QP_PORT |
837 IB_QP_MAX_QP_RD_ATOMIC |
838 IB_QP_MAX_DEST_RD_ATOMIC |
842 IB_QP_MIN_RNR_TIMER |
843 IB_QP_PATH_MIG_STATE),
844 [IB_QPT_XRC_INI] = (IB_QP_PORT |
849 IB_QP_MAX_QP_RD_ATOMIC |
853 IB_QP_PATH_MIG_STATE),
854 [IB_QPT_XRC_TGT] = (IB_QP_PORT |
857 IB_QP_MAX_DEST_RD_ATOMIC |
861 IB_QP_MIN_RNR_TIMER |
862 IB_QP_PATH_MIG_STATE),
863 [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
865 [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
871 [IB_QPS_RESET] = { .valid = 1 },
872 [IB_QPS_ERR] = { .valid = 1 },
876 [IB_QPT_UD] = (IB_QP_CUR_STATE |
878 [IB_QPT_UC] = (IB_QP_CUR_STATE |
880 [IB_QPT_SMI] = (IB_QP_CUR_STATE |
882 [IB_QPT_GSI] = (IB_QP_CUR_STATE |
888 [IB_QPS_RESET] = { .valid = 1 },
889 [IB_QPS_ERR] = { .valid = 1 }
893 int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
894 enum ib_qp_type type, enum ib_qp_attr_mask mask,
895 enum rdma_link_layer ll)
897 enum ib_qp_attr_mask req_param, opt_param;
899 if (cur_state < 0 || cur_state > IB_QPS_ERR ||
900 next_state < 0 || next_state > IB_QPS_ERR)
903 if (mask & IB_QP_CUR_STATE &&
904 cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS &&
905 cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE)
908 if (!qp_state_table[cur_state][next_state].valid)
911 req_param = qp_state_table[cur_state][next_state].req_param[type];
912 opt_param = qp_state_table[cur_state][next_state].opt_param[type];
914 if (ll == IB_LINK_LAYER_ETHERNET) {
915 req_param |= qp_state_table[cur_state][next_state].
916 req_param_add_eth[type];
917 opt_param |= qp_state_table[cur_state][next_state].
918 opt_param_add_eth[type];
921 if ((mask & req_param) != req_param)
924 if (mask & ~(req_param | opt_param | IB_QP_STATE))
929 EXPORT_SYMBOL(ib_modify_qp_is_ok);
931 int ib_resolve_eth_l2_attrs(struct ib_qp *qp,
932 struct ib_qp_attr *qp_attr, int *qp_attr_mask)
937 if ((*qp_attr_mask & IB_QP_AV) &&
938 (rdma_cap_eth_ah(qp->device, qp_attr->ah_attr.port_num))) {
939 ret = ib_query_gid(qp->device, qp_attr->ah_attr.port_num,
940 qp_attr->ah_attr.grh.sgid_index, &sgid);
943 if (rdma_link_local_addr((struct in6_addr *)qp_attr->ah_attr.grh.dgid.raw)) {
944 rdma_get_ll_mac((struct in6_addr *)qp_attr->ah_attr.grh.dgid.raw, qp_attr->ah_attr.dmac);
945 rdma_get_ll_mac((struct in6_addr *)sgid.raw, qp_attr->smac);
946 if (!(*qp_attr_mask & IB_QP_VID))
947 qp_attr->vlan_id = rdma_get_vlan_id(&sgid);
949 ret = rdma_addr_find_dmac_by_grh(&sgid, &qp_attr->ah_attr.grh.dgid,
950 qp_attr->ah_attr.dmac, &qp_attr->vlan_id);
953 ret = rdma_addr_find_smac_by_sgid(&sgid, qp_attr->smac, NULL);
957 *qp_attr_mask |= IB_QP_SMAC;
958 if (qp_attr->vlan_id < 0xFFFF)
959 *qp_attr_mask |= IB_QP_VID;
964 EXPORT_SYMBOL(ib_resolve_eth_l2_attrs);
967 int ib_modify_qp(struct ib_qp *qp,
968 struct ib_qp_attr *qp_attr,
973 ret = ib_resolve_eth_l2_attrs(qp, qp_attr, &qp_attr_mask);
977 return qp->device->modify_qp(qp->real_qp, qp_attr, qp_attr_mask, NULL);
979 EXPORT_SYMBOL(ib_modify_qp);
981 int ib_query_qp(struct ib_qp *qp,
982 struct ib_qp_attr *qp_attr,
984 struct ib_qp_init_attr *qp_init_attr)
986 return qp->device->query_qp ?
987 qp->device->query_qp(qp->real_qp, qp_attr, qp_attr_mask, qp_init_attr) :
990 EXPORT_SYMBOL(ib_query_qp);
992 int ib_close_qp(struct ib_qp *qp)
994 struct ib_qp *real_qp;
997 real_qp = qp->real_qp;
1001 spin_lock_irqsave(&real_qp->device->event_handler_lock, flags);
1002 list_del(&qp->open_list);
1003 spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags);
1005 atomic_dec(&real_qp->usecnt);
1010 EXPORT_SYMBOL(ib_close_qp);
1012 static int __ib_destroy_shared_qp(struct ib_qp *qp)
1014 struct ib_xrcd *xrcd;
1015 struct ib_qp *real_qp;
1018 real_qp = qp->real_qp;
1019 xrcd = real_qp->xrcd;
1021 mutex_lock(&xrcd->tgt_qp_mutex);
1023 if (atomic_read(&real_qp->usecnt) == 0)
1024 list_del(&real_qp->xrcd_list);
1027 mutex_unlock(&xrcd->tgt_qp_mutex);
1030 ret = ib_destroy_qp(real_qp);
1032 atomic_dec(&xrcd->usecnt);
1034 __ib_insert_xrcd_qp(xrcd, real_qp);
1040 int ib_destroy_qp(struct ib_qp *qp)
1043 struct ib_cq *scq, *rcq;
1047 if (atomic_read(&qp->usecnt))
1050 if (qp->real_qp != qp)
1051 return __ib_destroy_shared_qp(qp);
1058 ret = qp->device->destroy_qp(qp);
1061 atomic_dec(&pd->usecnt);
1063 atomic_dec(&scq->usecnt);
1065 atomic_dec(&rcq->usecnt);
1067 atomic_dec(&srq->usecnt);
1072 EXPORT_SYMBOL(ib_destroy_qp);
1074 /* Completion queues */
1076 struct ib_cq *ib_create_cq(struct ib_device *device,
1077 ib_comp_handler comp_handler,
1078 void (*event_handler)(struct ib_event *, void *),
1080 const struct ib_cq_init_attr *cq_attr)
1084 cq = device->create_cq(device, cq_attr, NULL, NULL);
1087 cq->device = device;
1089 cq->comp_handler = comp_handler;
1090 cq->event_handler = event_handler;
1091 cq->cq_context = cq_context;
1092 atomic_set(&cq->usecnt, 0);
1097 EXPORT_SYMBOL(ib_create_cq);
1099 int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period)
1101 return cq->device->modify_cq ?
1102 cq->device->modify_cq(cq, cq_count, cq_period) : -ENOSYS;
1104 EXPORT_SYMBOL(ib_modify_cq);
1106 int ib_destroy_cq(struct ib_cq *cq)
1108 if (atomic_read(&cq->usecnt))
1111 return cq->device->destroy_cq(cq);
1113 EXPORT_SYMBOL(ib_destroy_cq);
1115 int ib_resize_cq(struct ib_cq *cq, int cqe)
1117 return cq->device->resize_cq ?
1118 cq->device->resize_cq(cq, cqe, NULL) : -ENOSYS;
1120 EXPORT_SYMBOL(ib_resize_cq);
1122 /* Memory regions */
1124 struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags)
1129 err = ib_check_mr_access(mr_access_flags);
1131 return ERR_PTR(err);
1133 mr = pd->device->get_dma_mr(pd, mr_access_flags);
1136 mr->device = pd->device;
1139 atomic_inc(&pd->usecnt);
1140 atomic_set(&mr->usecnt, 0);
1145 EXPORT_SYMBOL(ib_get_dma_mr);
1147 int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr)
1149 return mr->device->query_mr ?
1150 mr->device->query_mr(mr, mr_attr) : -ENOSYS;
1152 EXPORT_SYMBOL(ib_query_mr);
1154 int ib_dereg_mr(struct ib_mr *mr)
1159 if (atomic_read(&mr->usecnt))
1163 ret = mr->device->dereg_mr(mr);
1165 atomic_dec(&pd->usecnt);
1169 EXPORT_SYMBOL(ib_dereg_mr);
1171 struct ib_mr *ib_create_mr(struct ib_pd *pd,
1172 struct ib_mr_init_attr *mr_init_attr)
1176 if (!pd->device->create_mr)
1177 return ERR_PTR(-ENOSYS);
1179 mr = pd->device->create_mr(pd, mr_init_attr);
1182 mr->device = pd->device;
1185 atomic_inc(&pd->usecnt);
1186 atomic_set(&mr->usecnt, 0);
1191 EXPORT_SYMBOL(ib_create_mr);
1193 int ib_destroy_mr(struct ib_mr *mr)
1198 if (atomic_read(&mr->usecnt))
1202 ret = mr->device->destroy_mr(mr);
1204 atomic_dec(&pd->usecnt);
1208 EXPORT_SYMBOL(ib_destroy_mr);
1210 struct ib_mr *ib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len)
1214 if (!pd->device->alloc_fast_reg_mr)
1215 return ERR_PTR(-ENOSYS);
1217 mr = pd->device->alloc_fast_reg_mr(pd, max_page_list_len);
1220 mr->device = pd->device;
1223 atomic_inc(&pd->usecnt);
1224 atomic_set(&mr->usecnt, 0);
1229 EXPORT_SYMBOL(ib_alloc_fast_reg_mr);
1231 struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list(struct ib_device *device,
1232 int max_page_list_len)
1234 struct ib_fast_reg_page_list *page_list;
1236 if (!device->alloc_fast_reg_page_list)
1237 return ERR_PTR(-ENOSYS);
1239 page_list = device->alloc_fast_reg_page_list(device, max_page_list_len);
1241 if (!IS_ERR(page_list)) {
1242 page_list->device = device;
1243 page_list->max_page_list_len = max_page_list_len;
1248 EXPORT_SYMBOL(ib_alloc_fast_reg_page_list);
1250 void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list)
1252 page_list->device->free_fast_reg_page_list(page_list);
1254 EXPORT_SYMBOL(ib_free_fast_reg_page_list);
1256 /* Memory windows */
1258 struct ib_mw *ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type)
1262 if (!pd->device->alloc_mw)
1263 return ERR_PTR(-ENOSYS);
1265 mw = pd->device->alloc_mw(pd, type);
1267 mw->device = pd->device;
1271 atomic_inc(&pd->usecnt);
1276 EXPORT_SYMBOL(ib_alloc_mw);
1278 int ib_dealloc_mw(struct ib_mw *mw)
1284 ret = mw->device->dealloc_mw(mw);
1286 atomic_dec(&pd->usecnt);
1290 EXPORT_SYMBOL(ib_dealloc_mw);
1292 /* "Fast" memory regions */
1294 struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
1295 int mr_access_flags,
1296 struct ib_fmr_attr *fmr_attr)
1300 if (!pd->device->alloc_fmr)
1301 return ERR_PTR(-ENOSYS);
1303 fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr);
1305 fmr->device = pd->device;
1307 atomic_inc(&pd->usecnt);
1312 EXPORT_SYMBOL(ib_alloc_fmr);
1314 int ib_unmap_fmr(struct list_head *fmr_list)
1318 if (list_empty(fmr_list))
1321 fmr = list_entry(fmr_list->next, struct ib_fmr, list);
1322 return fmr->device->unmap_fmr(fmr_list);
1324 EXPORT_SYMBOL(ib_unmap_fmr);
1326 int ib_dealloc_fmr(struct ib_fmr *fmr)
1332 ret = fmr->device->dealloc_fmr(fmr);
1334 atomic_dec(&pd->usecnt);
1338 EXPORT_SYMBOL(ib_dealloc_fmr);
1340 /* Multicast groups */
1342 int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
1346 if (!qp->device->attach_mcast)
1348 if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
1351 ret = qp->device->attach_mcast(qp, gid, lid);
1353 atomic_inc(&qp->usecnt);
1356 EXPORT_SYMBOL(ib_attach_mcast);
1358 int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
1362 if (!qp->device->detach_mcast)
1364 if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
1367 ret = qp->device->detach_mcast(qp, gid, lid);
1369 atomic_dec(&qp->usecnt);
1372 EXPORT_SYMBOL(ib_detach_mcast);
1374 struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device)
1376 struct ib_xrcd *xrcd;
1378 if (!device->alloc_xrcd)
1379 return ERR_PTR(-ENOSYS);
1381 xrcd = device->alloc_xrcd(device, NULL, NULL);
1382 if (!IS_ERR(xrcd)) {
1383 xrcd->device = device;
1385 atomic_set(&xrcd->usecnt, 0);
1386 mutex_init(&xrcd->tgt_qp_mutex);
1387 INIT_LIST_HEAD(&xrcd->tgt_qp_list);
1392 EXPORT_SYMBOL(ib_alloc_xrcd);
1394 int ib_dealloc_xrcd(struct ib_xrcd *xrcd)
1399 if (atomic_read(&xrcd->usecnt))
1402 while (!list_empty(&xrcd->tgt_qp_list)) {
1403 qp = list_entry(xrcd->tgt_qp_list.next, struct ib_qp, xrcd_list);
1404 ret = ib_destroy_qp(qp);
1409 return xrcd->device->dealloc_xrcd(xrcd);
1411 EXPORT_SYMBOL(ib_dealloc_xrcd);
1413 struct ib_flow *ib_create_flow(struct ib_qp *qp,
1414 struct ib_flow_attr *flow_attr,
1417 struct ib_flow *flow_id;
1418 if (!qp->device->create_flow)
1419 return ERR_PTR(-ENOSYS);
1421 flow_id = qp->device->create_flow(qp, flow_attr, domain);
1422 if (!IS_ERR(flow_id))
1423 atomic_inc(&qp->usecnt);
1426 EXPORT_SYMBOL(ib_create_flow);
1428 int ib_destroy_flow(struct ib_flow *flow_id)
1431 struct ib_qp *qp = flow_id->qp;
1433 err = qp->device->destroy_flow(flow_id);
1435 atomic_dec(&qp->usecnt);
1438 EXPORT_SYMBOL(ib_destroy_flow);
1440 int ib_check_mr_status(struct ib_mr *mr, u32 check_mask,
1441 struct ib_mr_status *mr_status)
1443 return mr->device->check_mr_status ?
1444 mr->device->check_mr_status(mr, check_mask, mr_status) : -ENOSYS;
1446 EXPORT_SYMBOL(ib_check_mr_status);