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 __attribute_const__ int ib_rate_to_mult(enum ib_rate rate)
54 case IB_RATE_2_5_GBPS: return 1;
55 case IB_RATE_5_GBPS: return 2;
56 case IB_RATE_10_GBPS: return 4;
57 case IB_RATE_20_GBPS: return 8;
58 case IB_RATE_30_GBPS: return 12;
59 case IB_RATE_40_GBPS: return 16;
60 case IB_RATE_60_GBPS: return 24;
61 case IB_RATE_80_GBPS: return 32;
62 case IB_RATE_120_GBPS: return 48;
66 EXPORT_SYMBOL(ib_rate_to_mult);
68 __attribute_const__ enum ib_rate mult_to_ib_rate(int mult)
71 case 1: return IB_RATE_2_5_GBPS;
72 case 2: return IB_RATE_5_GBPS;
73 case 4: return IB_RATE_10_GBPS;
74 case 8: return IB_RATE_20_GBPS;
75 case 12: return IB_RATE_30_GBPS;
76 case 16: return IB_RATE_40_GBPS;
77 case 24: return IB_RATE_60_GBPS;
78 case 32: return IB_RATE_80_GBPS;
79 case 48: return IB_RATE_120_GBPS;
80 default: return IB_RATE_PORT_CURRENT;
83 EXPORT_SYMBOL(mult_to_ib_rate);
85 __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate)
88 case IB_RATE_2_5_GBPS: return 2500;
89 case IB_RATE_5_GBPS: return 5000;
90 case IB_RATE_10_GBPS: return 10000;
91 case IB_RATE_20_GBPS: return 20000;
92 case IB_RATE_30_GBPS: return 30000;
93 case IB_RATE_40_GBPS: return 40000;
94 case IB_RATE_60_GBPS: return 60000;
95 case IB_RATE_80_GBPS: return 80000;
96 case IB_RATE_120_GBPS: return 120000;
97 case IB_RATE_14_GBPS: return 14062;
98 case IB_RATE_56_GBPS: return 56250;
99 case IB_RATE_112_GBPS: return 112500;
100 case IB_RATE_168_GBPS: return 168750;
101 case IB_RATE_25_GBPS: return 25781;
102 case IB_RATE_100_GBPS: return 103125;
103 case IB_RATE_200_GBPS: return 206250;
104 case IB_RATE_300_GBPS: return 309375;
108 EXPORT_SYMBOL(ib_rate_to_mbps);
110 __attribute_const__ enum rdma_transport_type
111 rdma_node_get_transport(enum rdma_node_type node_type)
114 case RDMA_NODE_IB_CA:
115 case RDMA_NODE_IB_SWITCH:
116 case RDMA_NODE_IB_ROUTER:
117 return RDMA_TRANSPORT_IB;
119 return RDMA_TRANSPORT_IWARP;
120 case RDMA_NODE_USNIC:
121 return RDMA_TRANSPORT_USNIC;
122 case RDMA_NODE_USNIC_UDP:
123 return RDMA_TRANSPORT_USNIC_UDP;
129 EXPORT_SYMBOL(rdma_node_get_transport);
131 enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, u8 port_num)
133 if (device->get_link_layer)
134 return device->get_link_layer(device, port_num);
136 switch (rdma_node_get_transport(device->node_type)) {
137 case RDMA_TRANSPORT_IB:
138 return IB_LINK_LAYER_INFINIBAND;
139 case RDMA_TRANSPORT_IWARP:
140 case RDMA_TRANSPORT_USNIC:
141 case RDMA_TRANSPORT_USNIC_UDP:
142 return IB_LINK_LAYER_ETHERNET;
144 return IB_LINK_LAYER_UNSPECIFIED;
147 EXPORT_SYMBOL(rdma_port_get_link_layer);
149 /* Protection domains */
151 struct ib_pd *ib_alloc_pd(struct ib_device *device)
155 pd = device->alloc_pd(device, NULL, NULL);
160 atomic_set(&pd->usecnt, 0);
165 EXPORT_SYMBOL(ib_alloc_pd);
167 int ib_dealloc_pd(struct ib_pd *pd)
169 if (atomic_read(&pd->usecnt))
172 return pd->device->dealloc_pd(pd);
174 EXPORT_SYMBOL(ib_dealloc_pd);
176 /* Address handles */
178 struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
182 ah = pd->device->create_ah(pd, ah_attr);
185 ah->device = pd->device;
188 atomic_inc(&pd->usecnt);
193 EXPORT_SYMBOL(ib_create_ah);
195 int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc,
196 struct ib_grh *grh, struct ib_ah_attr *ah_attr)
201 int is_eth = (rdma_port_get_link_layer(device, port_num) ==
202 IB_LINK_LAYER_ETHERNET);
204 memset(ah_attr, 0, sizeof *ah_attr);
206 if (!(wc->wc_flags & IB_WC_GRH))
209 if (wc->wc_flags & IB_WC_WITH_SMAC &&
210 wc->wc_flags & IB_WC_WITH_VLAN) {
211 memcpy(ah_attr->dmac, wc->smac, ETH_ALEN);
212 ah_attr->vlan_id = wc->vlan_id;
214 ret = rdma_addr_find_dmac_by_grh(&grh->dgid, &grh->sgid,
215 ah_attr->dmac, &ah_attr->vlan_id);
220 ah_attr->vlan_id = 0xffff;
223 ah_attr->dlid = wc->slid;
224 ah_attr->sl = wc->sl;
225 ah_attr->src_path_bits = wc->dlid_path_bits;
226 ah_attr->port_num = port_num;
228 if (wc->wc_flags & IB_WC_GRH) {
229 ah_attr->ah_flags = IB_AH_GRH;
230 ah_attr->grh.dgid = grh->sgid;
232 ret = ib_find_cached_gid(device, &grh->dgid, &port_num,
237 ah_attr->grh.sgid_index = (u8) gid_index;
238 flow_class = be32_to_cpu(grh->version_tclass_flow);
239 ah_attr->grh.flow_label = flow_class & 0xFFFFF;
240 ah_attr->grh.hop_limit = 0xFF;
241 ah_attr->grh.traffic_class = (flow_class >> 20) & 0xFF;
245 EXPORT_SYMBOL(ib_init_ah_from_wc);
247 struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
248 struct ib_grh *grh, u8 port_num)
250 struct ib_ah_attr ah_attr;
253 ret = ib_init_ah_from_wc(pd->device, port_num, wc, grh, &ah_attr);
257 return ib_create_ah(pd, &ah_attr);
259 EXPORT_SYMBOL(ib_create_ah_from_wc);
261 int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
263 return ah->device->modify_ah ?
264 ah->device->modify_ah(ah, ah_attr) :
267 EXPORT_SYMBOL(ib_modify_ah);
269 int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
271 return ah->device->query_ah ?
272 ah->device->query_ah(ah, ah_attr) :
275 EXPORT_SYMBOL(ib_query_ah);
277 int ib_destroy_ah(struct ib_ah *ah)
283 ret = ah->device->destroy_ah(ah);
285 atomic_dec(&pd->usecnt);
289 EXPORT_SYMBOL(ib_destroy_ah);
291 /* Shared receive queues */
293 struct ib_srq *ib_create_srq(struct ib_pd *pd,
294 struct ib_srq_init_attr *srq_init_attr)
298 if (!pd->device->create_srq)
299 return ERR_PTR(-ENOSYS);
301 srq = pd->device->create_srq(pd, srq_init_attr, NULL);
304 srq->device = pd->device;
307 srq->event_handler = srq_init_attr->event_handler;
308 srq->srq_context = srq_init_attr->srq_context;
309 srq->srq_type = srq_init_attr->srq_type;
310 if (srq->srq_type == IB_SRQT_XRC) {
311 srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd;
312 srq->ext.xrc.cq = srq_init_attr->ext.xrc.cq;
313 atomic_inc(&srq->ext.xrc.xrcd->usecnt);
314 atomic_inc(&srq->ext.xrc.cq->usecnt);
316 atomic_inc(&pd->usecnt);
317 atomic_set(&srq->usecnt, 0);
322 EXPORT_SYMBOL(ib_create_srq);
324 int ib_modify_srq(struct ib_srq *srq,
325 struct ib_srq_attr *srq_attr,
326 enum ib_srq_attr_mask srq_attr_mask)
328 return srq->device->modify_srq ?
329 srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL) :
332 EXPORT_SYMBOL(ib_modify_srq);
334 int ib_query_srq(struct ib_srq *srq,
335 struct ib_srq_attr *srq_attr)
337 return srq->device->query_srq ?
338 srq->device->query_srq(srq, srq_attr) : -ENOSYS;
340 EXPORT_SYMBOL(ib_query_srq);
342 int ib_destroy_srq(struct ib_srq *srq)
345 enum ib_srq_type srq_type;
346 struct ib_xrcd *uninitialized_var(xrcd);
347 struct ib_cq *uninitialized_var(cq);
350 if (atomic_read(&srq->usecnt))
354 srq_type = srq->srq_type;
355 if (srq_type == IB_SRQT_XRC) {
356 xrcd = srq->ext.xrc.xrcd;
357 cq = srq->ext.xrc.cq;
360 ret = srq->device->destroy_srq(srq);
362 atomic_dec(&pd->usecnt);
363 if (srq_type == IB_SRQT_XRC) {
364 atomic_dec(&xrcd->usecnt);
365 atomic_dec(&cq->usecnt);
371 EXPORT_SYMBOL(ib_destroy_srq);
375 static void __ib_shared_qp_event_handler(struct ib_event *event, void *context)
377 struct ib_qp *qp = context;
380 spin_lock_irqsave(&qp->device->event_handler_lock, flags);
381 list_for_each_entry(event->element.qp, &qp->open_list, open_list)
382 if (event->element.qp->event_handler)
383 event->element.qp->event_handler(event, event->element.qp->qp_context);
384 spin_unlock_irqrestore(&qp->device->event_handler_lock, flags);
387 static void __ib_insert_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp)
389 mutex_lock(&xrcd->tgt_qp_mutex);
390 list_add(&qp->xrcd_list, &xrcd->tgt_qp_list);
391 mutex_unlock(&xrcd->tgt_qp_mutex);
394 static struct ib_qp *__ib_open_qp(struct ib_qp *real_qp,
395 void (*event_handler)(struct ib_event *, void *),
401 qp = kzalloc(sizeof *qp, GFP_KERNEL);
403 return ERR_PTR(-ENOMEM);
405 qp->real_qp = real_qp;
406 atomic_inc(&real_qp->usecnt);
407 qp->device = real_qp->device;
408 qp->event_handler = event_handler;
409 qp->qp_context = qp_context;
410 qp->qp_num = real_qp->qp_num;
411 qp->qp_type = real_qp->qp_type;
413 spin_lock_irqsave(&real_qp->device->event_handler_lock, flags);
414 list_add(&qp->open_list, &real_qp->open_list);
415 spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags);
420 struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd,
421 struct ib_qp_open_attr *qp_open_attr)
423 struct ib_qp *qp, *real_qp;
425 if (qp_open_attr->qp_type != IB_QPT_XRC_TGT)
426 return ERR_PTR(-EINVAL);
428 qp = ERR_PTR(-EINVAL);
429 mutex_lock(&xrcd->tgt_qp_mutex);
430 list_for_each_entry(real_qp, &xrcd->tgt_qp_list, xrcd_list) {
431 if (real_qp->qp_num == qp_open_attr->qp_num) {
432 qp = __ib_open_qp(real_qp, qp_open_attr->event_handler,
433 qp_open_attr->qp_context);
437 mutex_unlock(&xrcd->tgt_qp_mutex);
440 EXPORT_SYMBOL(ib_open_qp);
442 struct ib_qp *ib_create_qp(struct ib_pd *pd,
443 struct ib_qp_init_attr *qp_init_attr)
445 struct ib_qp *qp, *real_qp;
446 struct ib_device *device;
448 device = pd ? pd->device : qp_init_attr->xrcd->device;
449 qp = device->create_qp(pd, qp_init_attr, NULL);
455 qp->qp_type = qp_init_attr->qp_type;
457 atomic_set(&qp->usecnt, 0);
458 if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) {
459 qp->event_handler = __ib_shared_qp_event_handler;
462 qp->send_cq = qp->recv_cq = NULL;
464 qp->xrcd = qp_init_attr->xrcd;
465 atomic_inc(&qp_init_attr->xrcd->usecnt);
466 INIT_LIST_HEAD(&qp->open_list);
469 qp = __ib_open_qp(real_qp, qp_init_attr->event_handler,
470 qp_init_attr->qp_context);
472 __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp);
474 real_qp->device->destroy_qp(real_qp);
476 qp->event_handler = qp_init_attr->event_handler;
477 qp->qp_context = qp_init_attr->qp_context;
478 if (qp_init_attr->qp_type == IB_QPT_XRC_INI) {
482 qp->recv_cq = qp_init_attr->recv_cq;
483 atomic_inc(&qp_init_attr->recv_cq->usecnt);
484 qp->srq = qp_init_attr->srq;
486 atomic_inc(&qp_init_attr->srq->usecnt);
490 qp->send_cq = qp_init_attr->send_cq;
493 atomic_inc(&pd->usecnt);
494 atomic_inc(&qp_init_attr->send_cq->usecnt);
500 EXPORT_SYMBOL(ib_create_qp);
502 static const struct {
504 enum ib_qp_attr_mask req_param[IB_QPT_MAX];
505 enum ib_qp_attr_mask req_param_add_eth[IB_QPT_MAX];
506 enum ib_qp_attr_mask opt_param[IB_QPT_MAX];
507 enum ib_qp_attr_mask opt_param_add_eth[IB_QPT_MAX];
508 } qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = {
510 [IB_QPS_RESET] = { .valid = 1 },
514 [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
517 [IB_QPT_RAW_PACKET] = IB_QP_PORT,
518 [IB_QPT_UC] = (IB_QP_PKEY_INDEX |
521 [IB_QPT_RC] = (IB_QP_PKEY_INDEX |
524 [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX |
527 [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX |
530 [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
532 [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
538 [IB_QPS_RESET] = { .valid = 1 },
539 [IB_QPS_ERR] = { .valid = 1 },
543 [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
546 [IB_QPT_UC] = (IB_QP_PKEY_INDEX |
549 [IB_QPT_RC] = (IB_QP_PKEY_INDEX |
552 [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX |
555 [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX |
558 [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
560 [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
567 [IB_QPT_UC] = (IB_QP_AV |
571 [IB_QPT_RC] = (IB_QP_AV |
575 IB_QP_MAX_DEST_RD_ATOMIC |
576 IB_QP_MIN_RNR_TIMER),
577 [IB_QPT_XRC_INI] = (IB_QP_AV |
581 [IB_QPT_XRC_TGT] = (IB_QP_AV |
585 IB_QP_MAX_DEST_RD_ATOMIC |
586 IB_QP_MIN_RNR_TIMER),
588 .req_param_add_eth = {
589 [IB_QPT_RC] = (IB_QP_SMAC),
590 [IB_QPT_UC] = (IB_QP_SMAC),
591 [IB_QPT_XRC_INI] = (IB_QP_SMAC),
592 [IB_QPT_XRC_TGT] = (IB_QP_SMAC)
595 [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
597 [IB_QPT_UC] = (IB_QP_ALT_PATH |
600 [IB_QPT_RC] = (IB_QP_ALT_PATH |
603 [IB_QPT_XRC_INI] = (IB_QP_ALT_PATH |
606 [IB_QPT_XRC_TGT] = (IB_QP_ALT_PATH |
609 [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
611 [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
614 .opt_param_add_eth = {
615 [IB_QPT_RC] = (IB_QP_ALT_SMAC |
618 [IB_QPT_UC] = (IB_QP_ALT_SMAC |
621 [IB_QPT_XRC_INI] = (IB_QP_ALT_SMAC |
624 [IB_QPT_XRC_TGT] = (IB_QP_ALT_SMAC |
631 [IB_QPS_RESET] = { .valid = 1 },
632 [IB_QPS_ERR] = { .valid = 1 },
636 [IB_QPT_UD] = IB_QP_SQ_PSN,
637 [IB_QPT_UC] = IB_QP_SQ_PSN,
638 [IB_QPT_RC] = (IB_QP_TIMEOUT |
642 IB_QP_MAX_QP_RD_ATOMIC),
643 [IB_QPT_XRC_INI] = (IB_QP_TIMEOUT |
647 IB_QP_MAX_QP_RD_ATOMIC),
648 [IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT |
650 [IB_QPT_SMI] = IB_QP_SQ_PSN,
651 [IB_QPT_GSI] = IB_QP_SQ_PSN,
654 [IB_QPT_UD] = (IB_QP_CUR_STATE |
656 [IB_QPT_UC] = (IB_QP_CUR_STATE |
659 IB_QP_PATH_MIG_STATE),
660 [IB_QPT_RC] = (IB_QP_CUR_STATE |
663 IB_QP_MIN_RNR_TIMER |
664 IB_QP_PATH_MIG_STATE),
665 [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE |
668 IB_QP_PATH_MIG_STATE),
669 [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE |
672 IB_QP_MIN_RNR_TIMER |
673 IB_QP_PATH_MIG_STATE),
674 [IB_QPT_SMI] = (IB_QP_CUR_STATE |
676 [IB_QPT_GSI] = (IB_QP_CUR_STATE |
682 [IB_QPS_RESET] = { .valid = 1 },
683 [IB_QPS_ERR] = { .valid = 1 },
687 [IB_QPT_UD] = (IB_QP_CUR_STATE |
689 [IB_QPT_UC] = (IB_QP_CUR_STATE |
692 IB_QP_PATH_MIG_STATE),
693 [IB_QPT_RC] = (IB_QP_CUR_STATE |
696 IB_QP_PATH_MIG_STATE |
697 IB_QP_MIN_RNR_TIMER),
698 [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE |
701 IB_QP_PATH_MIG_STATE),
702 [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE |
705 IB_QP_PATH_MIG_STATE |
706 IB_QP_MIN_RNR_TIMER),
707 [IB_QPT_SMI] = (IB_QP_CUR_STATE |
709 [IB_QPT_GSI] = (IB_QP_CUR_STATE |
716 [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY,
717 [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY,
718 [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY,
719 [IB_QPT_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY,
720 [IB_QPT_XRC_TGT] = IB_QP_EN_SQD_ASYNC_NOTIFY, /* ??? */
721 [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY,
722 [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY
727 [IB_QPS_RESET] = { .valid = 1 },
728 [IB_QPS_ERR] = { .valid = 1 },
732 [IB_QPT_UD] = (IB_QP_CUR_STATE |
734 [IB_QPT_UC] = (IB_QP_CUR_STATE |
737 IB_QP_PATH_MIG_STATE),
738 [IB_QPT_RC] = (IB_QP_CUR_STATE |
741 IB_QP_MIN_RNR_TIMER |
742 IB_QP_PATH_MIG_STATE),
743 [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE |
746 IB_QP_PATH_MIG_STATE),
747 [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE |
750 IB_QP_MIN_RNR_TIMER |
751 IB_QP_PATH_MIG_STATE),
752 [IB_QPT_SMI] = (IB_QP_CUR_STATE |
754 [IB_QPT_GSI] = (IB_QP_CUR_STATE |
761 [IB_QPT_UD] = (IB_QP_PKEY_INDEX |
763 [IB_QPT_UC] = (IB_QP_AV |
767 IB_QP_PATH_MIG_STATE),
768 [IB_QPT_RC] = (IB_QP_PORT |
773 IB_QP_MAX_QP_RD_ATOMIC |
774 IB_QP_MAX_DEST_RD_ATOMIC |
778 IB_QP_MIN_RNR_TIMER |
779 IB_QP_PATH_MIG_STATE),
780 [IB_QPT_XRC_INI] = (IB_QP_PORT |
785 IB_QP_MAX_QP_RD_ATOMIC |
789 IB_QP_PATH_MIG_STATE),
790 [IB_QPT_XRC_TGT] = (IB_QP_PORT |
793 IB_QP_MAX_DEST_RD_ATOMIC |
797 IB_QP_MIN_RNR_TIMER |
798 IB_QP_PATH_MIG_STATE),
799 [IB_QPT_SMI] = (IB_QP_PKEY_INDEX |
801 [IB_QPT_GSI] = (IB_QP_PKEY_INDEX |
807 [IB_QPS_RESET] = { .valid = 1 },
808 [IB_QPS_ERR] = { .valid = 1 },
812 [IB_QPT_UD] = (IB_QP_CUR_STATE |
814 [IB_QPT_UC] = (IB_QP_CUR_STATE |
816 [IB_QPT_SMI] = (IB_QP_CUR_STATE |
818 [IB_QPT_GSI] = (IB_QP_CUR_STATE |
824 [IB_QPS_RESET] = { .valid = 1 },
825 [IB_QPS_ERR] = { .valid = 1 }
829 int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
830 enum ib_qp_type type, enum ib_qp_attr_mask mask,
831 enum rdma_link_layer ll)
833 enum ib_qp_attr_mask req_param, opt_param;
835 if (cur_state < 0 || cur_state > IB_QPS_ERR ||
836 next_state < 0 || next_state > IB_QPS_ERR)
839 if (mask & IB_QP_CUR_STATE &&
840 cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS &&
841 cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE)
844 if (!qp_state_table[cur_state][next_state].valid)
847 req_param = qp_state_table[cur_state][next_state].req_param[type];
848 opt_param = qp_state_table[cur_state][next_state].opt_param[type];
850 if (ll == IB_LINK_LAYER_ETHERNET) {
851 req_param |= qp_state_table[cur_state][next_state].
852 req_param_add_eth[type];
853 opt_param |= qp_state_table[cur_state][next_state].
854 opt_param_add_eth[type];
857 if ((mask & req_param) != req_param)
860 if (mask & ~(req_param | opt_param | IB_QP_STATE))
865 EXPORT_SYMBOL(ib_modify_qp_is_ok);
867 int ib_resolve_eth_l2_attrs(struct ib_qp *qp,
868 struct ib_qp_attr *qp_attr, int *qp_attr_mask)
873 if ((*qp_attr_mask & IB_QP_AV) &&
874 (rdma_port_get_link_layer(qp->device, qp_attr->ah_attr.port_num) == IB_LINK_LAYER_ETHERNET)) {
875 ret = ib_query_gid(qp->device, qp_attr->ah_attr.port_num,
876 qp_attr->ah_attr.grh.sgid_index, &sgid);
879 if (rdma_link_local_addr((struct in6_addr *)qp_attr->ah_attr.grh.dgid.raw)) {
880 rdma_get_ll_mac((struct in6_addr *)qp_attr->ah_attr.grh.dgid.raw, qp_attr->ah_attr.dmac);
881 rdma_get_ll_mac((struct in6_addr *)sgid.raw, qp_attr->smac);
882 if (!(*qp_attr_mask & IB_QP_VID))
883 qp_attr->vlan_id = rdma_get_vlan_id(&sgid);
885 ret = rdma_addr_find_dmac_by_grh(&sgid, &qp_attr->ah_attr.grh.dgid,
886 qp_attr->ah_attr.dmac, &qp_attr->vlan_id);
889 ret = rdma_addr_find_smac_by_sgid(&sgid, qp_attr->smac, NULL);
893 *qp_attr_mask |= IB_QP_SMAC;
894 if (qp_attr->vlan_id < 0xFFFF)
895 *qp_attr_mask |= IB_QP_VID;
900 EXPORT_SYMBOL(ib_resolve_eth_l2_attrs);
903 int ib_modify_qp(struct ib_qp *qp,
904 struct ib_qp_attr *qp_attr,
909 ret = ib_resolve_eth_l2_attrs(qp, qp_attr, &qp_attr_mask);
913 return qp->device->modify_qp(qp->real_qp, qp_attr, qp_attr_mask, NULL);
915 EXPORT_SYMBOL(ib_modify_qp);
917 int ib_query_qp(struct ib_qp *qp,
918 struct ib_qp_attr *qp_attr,
920 struct ib_qp_init_attr *qp_init_attr)
922 return qp->device->query_qp ?
923 qp->device->query_qp(qp->real_qp, qp_attr, qp_attr_mask, qp_init_attr) :
926 EXPORT_SYMBOL(ib_query_qp);
928 int ib_close_qp(struct ib_qp *qp)
930 struct ib_qp *real_qp;
933 real_qp = qp->real_qp;
937 spin_lock_irqsave(&real_qp->device->event_handler_lock, flags);
938 list_del(&qp->open_list);
939 spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags);
941 atomic_dec(&real_qp->usecnt);
946 EXPORT_SYMBOL(ib_close_qp);
948 static int __ib_destroy_shared_qp(struct ib_qp *qp)
950 struct ib_xrcd *xrcd;
951 struct ib_qp *real_qp;
954 real_qp = qp->real_qp;
955 xrcd = real_qp->xrcd;
957 mutex_lock(&xrcd->tgt_qp_mutex);
959 if (atomic_read(&real_qp->usecnt) == 0)
960 list_del(&real_qp->xrcd_list);
963 mutex_unlock(&xrcd->tgt_qp_mutex);
966 ret = ib_destroy_qp(real_qp);
968 atomic_dec(&xrcd->usecnt);
970 __ib_insert_xrcd_qp(xrcd, real_qp);
976 int ib_destroy_qp(struct ib_qp *qp)
979 struct ib_cq *scq, *rcq;
983 if (atomic_read(&qp->usecnt))
986 if (qp->real_qp != qp)
987 return __ib_destroy_shared_qp(qp);
994 ret = qp->device->destroy_qp(qp);
997 atomic_dec(&pd->usecnt);
999 atomic_dec(&scq->usecnt);
1001 atomic_dec(&rcq->usecnt);
1003 atomic_dec(&srq->usecnt);
1008 EXPORT_SYMBOL(ib_destroy_qp);
1010 /* Completion queues */
1012 struct ib_cq *ib_create_cq(struct ib_device *device,
1013 ib_comp_handler comp_handler,
1014 void (*event_handler)(struct ib_event *, void *),
1015 void *cq_context, int cqe, int comp_vector)
1019 cq = device->create_cq(device, cqe, comp_vector, NULL, NULL);
1022 cq->device = device;
1024 cq->comp_handler = comp_handler;
1025 cq->event_handler = event_handler;
1026 cq->cq_context = cq_context;
1027 atomic_set(&cq->usecnt, 0);
1032 EXPORT_SYMBOL(ib_create_cq);
1034 int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period)
1036 return cq->device->modify_cq ?
1037 cq->device->modify_cq(cq, cq_count, cq_period) : -ENOSYS;
1039 EXPORT_SYMBOL(ib_modify_cq);
1041 int ib_destroy_cq(struct ib_cq *cq)
1043 if (atomic_read(&cq->usecnt))
1046 return cq->device->destroy_cq(cq);
1048 EXPORT_SYMBOL(ib_destroy_cq);
1050 int ib_resize_cq(struct ib_cq *cq, int cqe)
1052 return cq->device->resize_cq ?
1053 cq->device->resize_cq(cq, cqe, NULL) : -ENOSYS;
1055 EXPORT_SYMBOL(ib_resize_cq);
1057 /* Memory regions */
1059 struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags)
1064 err = ib_check_mr_access(mr_access_flags);
1066 return ERR_PTR(err);
1068 mr = pd->device->get_dma_mr(pd, mr_access_flags);
1071 mr->device = pd->device;
1074 atomic_inc(&pd->usecnt);
1075 atomic_set(&mr->usecnt, 0);
1080 EXPORT_SYMBOL(ib_get_dma_mr);
1082 struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
1083 struct ib_phys_buf *phys_buf_array,
1085 int mr_access_flags,
1091 err = ib_check_mr_access(mr_access_flags);
1093 return ERR_PTR(err);
1095 if (!pd->device->reg_phys_mr)
1096 return ERR_PTR(-ENOSYS);
1098 mr = pd->device->reg_phys_mr(pd, phys_buf_array, num_phys_buf,
1099 mr_access_flags, iova_start);
1102 mr->device = pd->device;
1105 atomic_inc(&pd->usecnt);
1106 atomic_set(&mr->usecnt, 0);
1111 EXPORT_SYMBOL(ib_reg_phys_mr);
1113 int ib_rereg_phys_mr(struct ib_mr *mr,
1116 struct ib_phys_buf *phys_buf_array,
1118 int mr_access_flags,
1121 struct ib_pd *old_pd;
1124 ret = ib_check_mr_access(mr_access_flags);
1128 if (!mr->device->rereg_phys_mr)
1131 if (atomic_read(&mr->usecnt))
1136 ret = mr->device->rereg_phys_mr(mr, mr_rereg_mask, pd,
1137 phys_buf_array, num_phys_buf,
1138 mr_access_flags, iova_start);
1140 if (!ret && (mr_rereg_mask & IB_MR_REREG_PD)) {
1141 atomic_dec(&old_pd->usecnt);
1142 atomic_inc(&pd->usecnt);
1147 EXPORT_SYMBOL(ib_rereg_phys_mr);
1149 int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr)
1151 return mr->device->query_mr ?
1152 mr->device->query_mr(mr, mr_attr) : -ENOSYS;
1154 EXPORT_SYMBOL(ib_query_mr);
1156 int ib_dereg_mr(struct ib_mr *mr)
1161 if (atomic_read(&mr->usecnt))
1165 ret = mr->device->dereg_mr(mr);
1167 atomic_dec(&pd->usecnt);
1171 EXPORT_SYMBOL(ib_dereg_mr);
1173 struct ib_mr *ib_create_mr(struct ib_pd *pd,
1174 struct ib_mr_init_attr *mr_init_attr)
1178 if (!pd->device->create_mr)
1179 return ERR_PTR(-ENOSYS);
1181 mr = pd->device->create_mr(pd, mr_init_attr);
1184 mr->device = pd->device;
1187 atomic_inc(&pd->usecnt);
1188 atomic_set(&mr->usecnt, 0);
1193 EXPORT_SYMBOL(ib_create_mr);
1195 int ib_destroy_mr(struct ib_mr *mr)
1200 if (atomic_read(&mr->usecnt))
1204 ret = mr->device->destroy_mr(mr);
1206 atomic_dec(&pd->usecnt);
1210 EXPORT_SYMBOL(ib_destroy_mr);
1212 struct ib_mr *ib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len)
1216 if (!pd->device->alloc_fast_reg_mr)
1217 return ERR_PTR(-ENOSYS);
1219 mr = pd->device->alloc_fast_reg_mr(pd, max_page_list_len);
1222 mr->device = pd->device;
1225 atomic_inc(&pd->usecnt);
1226 atomic_set(&mr->usecnt, 0);
1231 EXPORT_SYMBOL(ib_alloc_fast_reg_mr);
1233 struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list(struct ib_device *device,
1234 int max_page_list_len)
1236 struct ib_fast_reg_page_list *page_list;
1238 if (!device->alloc_fast_reg_page_list)
1239 return ERR_PTR(-ENOSYS);
1241 page_list = device->alloc_fast_reg_page_list(device, max_page_list_len);
1243 if (!IS_ERR(page_list)) {
1244 page_list->device = device;
1245 page_list->max_page_list_len = max_page_list_len;
1250 EXPORT_SYMBOL(ib_alloc_fast_reg_page_list);
1252 void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list)
1254 page_list->device->free_fast_reg_page_list(page_list);
1256 EXPORT_SYMBOL(ib_free_fast_reg_page_list);
1258 /* Memory windows */
1260 struct ib_mw *ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type)
1264 if (!pd->device->alloc_mw)
1265 return ERR_PTR(-ENOSYS);
1267 mw = pd->device->alloc_mw(pd, type);
1269 mw->device = pd->device;
1273 atomic_inc(&pd->usecnt);
1278 EXPORT_SYMBOL(ib_alloc_mw);
1280 int ib_dealloc_mw(struct ib_mw *mw)
1286 ret = mw->device->dealloc_mw(mw);
1288 atomic_dec(&pd->usecnt);
1292 EXPORT_SYMBOL(ib_dealloc_mw);
1294 /* "Fast" memory regions */
1296 struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
1297 int mr_access_flags,
1298 struct ib_fmr_attr *fmr_attr)
1302 if (!pd->device->alloc_fmr)
1303 return ERR_PTR(-ENOSYS);
1305 fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr);
1307 fmr->device = pd->device;
1309 atomic_inc(&pd->usecnt);
1314 EXPORT_SYMBOL(ib_alloc_fmr);
1316 int ib_unmap_fmr(struct list_head *fmr_list)
1320 if (list_empty(fmr_list))
1323 fmr = list_entry(fmr_list->next, struct ib_fmr, list);
1324 return fmr->device->unmap_fmr(fmr_list);
1326 EXPORT_SYMBOL(ib_unmap_fmr);
1328 int ib_dealloc_fmr(struct ib_fmr *fmr)
1334 ret = fmr->device->dealloc_fmr(fmr);
1336 atomic_dec(&pd->usecnt);
1340 EXPORT_SYMBOL(ib_dealloc_fmr);
1342 /* Multicast groups */
1344 int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
1348 if (!qp->device->attach_mcast)
1350 if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
1353 ret = qp->device->attach_mcast(qp, gid, lid);
1355 atomic_inc(&qp->usecnt);
1358 EXPORT_SYMBOL(ib_attach_mcast);
1360 int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
1364 if (!qp->device->detach_mcast)
1366 if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
1369 ret = qp->device->detach_mcast(qp, gid, lid);
1371 atomic_dec(&qp->usecnt);
1374 EXPORT_SYMBOL(ib_detach_mcast);
1376 struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device)
1378 struct ib_xrcd *xrcd;
1380 if (!device->alloc_xrcd)
1381 return ERR_PTR(-ENOSYS);
1383 xrcd = device->alloc_xrcd(device, NULL, NULL);
1384 if (!IS_ERR(xrcd)) {
1385 xrcd->device = device;
1387 atomic_set(&xrcd->usecnt, 0);
1388 mutex_init(&xrcd->tgt_qp_mutex);
1389 INIT_LIST_HEAD(&xrcd->tgt_qp_list);
1394 EXPORT_SYMBOL(ib_alloc_xrcd);
1396 int ib_dealloc_xrcd(struct ib_xrcd *xrcd)
1401 if (atomic_read(&xrcd->usecnt))
1404 while (!list_empty(&xrcd->tgt_qp_list)) {
1405 qp = list_entry(xrcd->tgt_qp_list.next, struct ib_qp, xrcd_list);
1406 ret = ib_destroy_qp(qp);
1411 return xrcd->device->dealloc_xrcd(xrcd);
1413 EXPORT_SYMBOL(ib_dealloc_xrcd);
1415 struct ib_flow *ib_create_flow(struct ib_qp *qp,
1416 struct ib_flow_attr *flow_attr,
1419 struct ib_flow *flow_id;
1420 if (!qp->device->create_flow)
1421 return ERR_PTR(-ENOSYS);
1423 flow_id = qp->device->create_flow(qp, flow_attr, domain);
1424 if (!IS_ERR(flow_id))
1425 atomic_inc(&qp->usecnt);
1428 EXPORT_SYMBOL(ib_create_flow);
1430 int ib_destroy_flow(struct ib_flow *flow_id)
1433 struct ib_qp *qp = flow_id->qp;
1435 err = qp->device->destroy_flow(flow_id);
1437 atomic_dec(&qp->usecnt);
1440 EXPORT_SYMBOL(ib_destroy_flow);
1442 int ib_check_mr_status(struct ib_mr *mr, u32 check_mask,
1443 struct ib_mr_status *mr_status)
1445 return mr->device->check_mr_status ?
1446 mr->device->check_mr_status(mr, check_mask, mr_status) : -ENOSYS;
1448 EXPORT_SYMBOL(ib_check_mr_status);