Lines Matching refs:rdma
155 struct p9_trans_rdma *rdma = clnt->trans; in p9_rdma_show_options() local
157 if (rdma->port != P9_PORT) in p9_rdma_show_options()
158 seq_printf(m, ",port=%u", rdma->port); in p9_rdma_show_options()
159 if (rdma->sq_depth != P9_RDMA_SQ_DEPTH) in p9_rdma_show_options()
160 seq_printf(m, ",sq=%u", rdma->sq_depth); in p9_rdma_show_options()
161 if (rdma->rq_depth != P9_RDMA_RQ_DEPTH) in p9_rdma_show_options()
162 seq_printf(m, ",rq=%u", rdma->rq_depth); in p9_rdma_show_options()
163 if (rdma->timeout != P9_RDMA_TIMEOUT) in p9_rdma_show_options()
164 seq_printf(m, ",timeout=%lu", rdma->timeout); in p9_rdma_show_options()
165 if (rdma->privport) in p9_rdma_show_options()
245 struct p9_trans_rdma *rdma = c->trans; in p9_cm_event_handler() local
248 BUG_ON(rdma->state != P9_RDMA_INIT); in p9_cm_event_handler()
249 rdma->state = P9_RDMA_ADDR_RESOLVED; in p9_cm_event_handler()
253 BUG_ON(rdma->state != P9_RDMA_ADDR_RESOLVED); in p9_cm_event_handler()
254 rdma->state = P9_RDMA_ROUTE_RESOLVED; in p9_cm_event_handler()
258 BUG_ON(rdma->state != P9_RDMA_ROUTE_RESOLVED); in p9_cm_event_handler()
259 rdma->state = P9_RDMA_CONNECTED; in p9_cm_event_handler()
263 if (rdma) in p9_cm_event_handler()
264 rdma->state = P9_RDMA_CLOSED; in p9_cm_event_handler()
283 rdma_disconnect(rdma->cm_id); in p9_cm_event_handler()
288 complete(&rdma->cm_done); in p9_cm_event_handler()
296 struct p9_trans_rdma *rdma = client->trans; in recv_done() local
304 ib_dma_unmap_single(rdma->cm_id->device, c->busa, client->msize, in recv_done()
331 up(&rdma->rq_sem); in recv_done()
338 rdma->state = P9_RDMA_FLUSHING; in recv_done()
347 struct p9_trans_rdma *rdma = client->trans; in send_done() local
351 ib_dma_unmap_single(rdma->cm_id->device, in send_done()
354 up(&rdma->sq_sem); in send_done()
365 static void rdma_destroy_trans(struct p9_trans_rdma *rdma) in rdma_destroy_trans() argument
367 if (!rdma) in rdma_destroy_trans()
370 if (rdma->qp && !IS_ERR(rdma->qp)) in rdma_destroy_trans()
371 ib_destroy_qp(rdma->qp); in rdma_destroy_trans()
373 if (rdma->pd && !IS_ERR(rdma->pd)) in rdma_destroy_trans()
374 ib_dealloc_pd(rdma->pd); in rdma_destroy_trans()
376 if (rdma->cq && !IS_ERR(rdma->cq)) in rdma_destroy_trans()
377 ib_free_cq(rdma->cq); in rdma_destroy_trans()
379 if (rdma->cm_id && !IS_ERR(rdma->cm_id)) in rdma_destroy_trans()
380 rdma_destroy_id(rdma->cm_id); in rdma_destroy_trans()
382 kfree(rdma); in rdma_destroy_trans()
388 struct p9_trans_rdma *rdma = client->trans; in post_recv() local
392 c->busa = ib_dma_map_single(rdma->cm_id->device, in post_recv()
395 if (ib_dma_mapping_error(rdma->cm_id->device, c->busa)) in post_recv()
402 sge.lkey = rdma->pd->local_dma_lkey; in post_recv()
408 return ib_post_recv(rdma->qp, &wr, NULL); in post_recv()
417 struct p9_trans_rdma *rdma = client->trans; in rdma_request() local
433 if (unlikely(atomic_read(&rdma->excess_rc) > 0)) { in rdma_request()
434 if ((atomic_sub_return(1, &rdma->excess_rc) >= 0)) { in rdma_request()
441 atomic_inc(&rdma->excess_rc); in rdma_request()
460 if (down_interruptible(&rdma->rq_sem)) { in rdma_request()
482 c->busa = ib_dma_map_single(rdma->cm_id->device, in rdma_request()
485 if (ib_dma_mapping_error(rdma->cm_id->device, c->busa)) { in rdma_request()
494 sge.lkey = rdma->pd->local_dma_lkey; in rdma_request()
503 if (down_interruptible(&rdma->sq_sem)) { in rdma_request()
513 err = ib_post_send(rdma->qp, &wr, NULL); in rdma_request()
529 atomic_inc(&rdma->excess_rc); in rdma_request()
535 spin_lock_irqsave(&rdma->req_lock, flags); in rdma_request()
536 if (err != -EINTR && rdma->state < P9_RDMA_CLOSING) { in rdma_request()
537 rdma->state = P9_RDMA_CLOSING; in rdma_request()
538 spin_unlock_irqrestore(&rdma->req_lock, flags); in rdma_request()
539 rdma_disconnect(rdma->cm_id); in rdma_request()
541 spin_unlock_irqrestore(&rdma->req_lock, flags); in rdma_request()
547 struct p9_trans_rdma *rdma; in rdma_close() local
552 rdma = client->trans; in rdma_close()
553 if (!rdma) in rdma_close()
557 rdma_disconnect(rdma->cm_id); in rdma_close()
558 rdma_destroy_trans(rdma); in rdma_close()
567 struct p9_trans_rdma *rdma; in alloc_rdma() local
569 rdma = kzalloc(sizeof(struct p9_trans_rdma), GFP_KERNEL); in alloc_rdma()
570 if (!rdma) in alloc_rdma()
573 rdma->port = opts->port; in alloc_rdma()
574 rdma->privport = opts->privport; in alloc_rdma()
575 rdma->sq_depth = opts->sq_depth; in alloc_rdma()
576 rdma->rq_depth = opts->rq_depth; in alloc_rdma()
577 rdma->timeout = opts->timeout; in alloc_rdma()
578 spin_lock_init(&rdma->req_lock); in alloc_rdma()
579 init_completion(&rdma->cm_done); in alloc_rdma()
580 sema_init(&rdma->sq_sem, rdma->sq_depth); in alloc_rdma()
581 sema_init(&rdma->rq_sem, rdma->rq_depth); in alloc_rdma()
582 atomic_set(&rdma->excess_rc, 0); in alloc_rdma()
584 return rdma; in alloc_rdma()
600 struct p9_trans_rdma *rdma = client->trans; in rdma_cancelled() local
601 atomic_inc(&rdma->excess_rc); in rdma_cancelled()
605 static int p9_rdma_bind_privport(struct p9_trans_rdma *rdma) in p9_rdma_bind_privport() argument
615 err = rdma_bind_addr(rdma->cm_id, (struct sockaddr *)&cl); in p9_rdma_bind_privport()
633 struct p9_trans_rdma *rdma; in rdma_create_trans() local
646 rdma = alloc_rdma(&opts); in rdma_create_trans()
647 if (!rdma) in rdma_create_trans()
651 rdma->cm_id = rdma_create_id(&init_net, p9_cm_event_handler, client, in rdma_create_trans()
653 if (IS_ERR(rdma->cm_id)) in rdma_create_trans()
657 client->trans = rdma; in rdma_create_trans()
661 err = p9_rdma_bind_privport(rdma); in rdma_create_trans()
670 rdma->addr.sin_family = AF_INET; in rdma_create_trans()
671 rdma->addr.sin_addr.s_addr = in_aton(addr); in rdma_create_trans()
672 rdma->addr.sin_port = htons(opts.port); in rdma_create_trans()
673 err = rdma_resolve_addr(rdma->cm_id, NULL, in rdma_create_trans()
674 (struct sockaddr *)&rdma->addr, in rdma_create_trans()
675 rdma->timeout); in rdma_create_trans()
678 err = wait_for_completion_interruptible(&rdma->cm_done); in rdma_create_trans()
679 if (err || (rdma->state != P9_RDMA_ADDR_RESOLVED)) in rdma_create_trans()
683 err = rdma_resolve_route(rdma->cm_id, rdma->timeout); in rdma_create_trans()
686 err = wait_for_completion_interruptible(&rdma->cm_done); in rdma_create_trans()
687 if (err || (rdma->state != P9_RDMA_ROUTE_RESOLVED)) in rdma_create_trans()
691 rdma->cq = ib_alloc_cq_any(rdma->cm_id->device, client, in rdma_create_trans()
694 if (IS_ERR(rdma->cq)) in rdma_create_trans()
698 rdma->pd = ib_alloc_pd(rdma->cm_id->device, 0); in rdma_create_trans()
699 if (IS_ERR(rdma->pd)) in rdma_create_trans()
712 qp_attr.send_cq = rdma->cq; in rdma_create_trans()
713 qp_attr.recv_cq = rdma->cq; in rdma_create_trans()
714 err = rdma_create_qp(rdma->cm_id, rdma->pd, &qp_attr); in rdma_create_trans()
717 rdma->qp = rdma->cm_id->qp; in rdma_create_trans()
725 err = rdma_connect(rdma->cm_id, &conn_param); in rdma_create_trans()
728 err = wait_for_completion_interruptible(&rdma->cm_done); in rdma_create_trans()
729 if (err || (rdma->state != P9_RDMA_CONNECTED)) in rdma_create_trans()
737 rdma_destroy_trans(rdma); in rdma_create_trans()