Lines Matching refs:rdma
238 struct p9_trans_rdma *rdma = c->trans; in p9_cm_event_handler() local
241 BUG_ON(rdma->state != P9_RDMA_INIT); in p9_cm_event_handler()
242 rdma->state = P9_RDMA_ADDR_RESOLVED; in p9_cm_event_handler()
246 BUG_ON(rdma->state != P9_RDMA_ADDR_RESOLVED); in p9_cm_event_handler()
247 rdma->state = P9_RDMA_ROUTE_RESOLVED; in p9_cm_event_handler()
251 BUG_ON(rdma->state != P9_RDMA_ROUTE_RESOLVED); in p9_cm_event_handler()
252 rdma->state = P9_RDMA_CONNECTED; in p9_cm_event_handler()
256 if (rdma) in p9_cm_event_handler()
257 rdma->state = P9_RDMA_CLOSED; in p9_cm_event_handler()
277 rdma_disconnect(rdma->cm_id); in p9_cm_event_handler()
282 complete(&rdma->cm_done); in p9_cm_event_handler()
287 handle_recv(struct p9_client *client, struct p9_trans_rdma *rdma, in handle_recv() argument
295 ib_dma_unmap_single(rdma->cm_id->device, c->busa, client->msize, in handle_recv()
323 rdma->state = P9_RDMA_FLUSHING; in handle_recv()
328 handle_send(struct p9_client *client, struct p9_trans_rdma *rdma, in handle_send() argument
331 ib_dma_unmap_single(rdma->cm_id->device, in handle_send()
345 struct p9_trans_rdma *rdma = client->trans; in cq_comp_handler() local
349 ib_req_notify_cq(rdma->cq, IB_CQ_NEXT_COMP); in cq_comp_handler()
355 handle_recv(client, rdma, c, wc.status, wc.byte_len); in cq_comp_handler()
356 up(&rdma->rq_sem); in cq_comp_handler()
360 handle_send(client, rdma, c, wc.status, wc.byte_len); in cq_comp_handler()
361 up(&rdma->sq_sem); in cq_comp_handler()
378 static void rdma_destroy_trans(struct p9_trans_rdma *rdma) in rdma_destroy_trans() argument
380 if (!rdma) in rdma_destroy_trans()
383 if (rdma->qp && !IS_ERR(rdma->qp)) in rdma_destroy_trans()
384 ib_destroy_qp(rdma->qp); in rdma_destroy_trans()
386 if (rdma->pd && !IS_ERR(rdma->pd)) in rdma_destroy_trans()
387 ib_dealloc_pd(rdma->pd); in rdma_destroy_trans()
389 if (rdma->cq && !IS_ERR(rdma->cq)) in rdma_destroy_trans()
390 ib_destroy_cq(rdma->cq); in rdma_destroy_trans()
392 if (rdma->cm_id && !IS_ERR(rdma->cm_id)) in rdma_destroy_trans()
393 rdma_destroy_id(rdma->cm_id); in rdma_destroy_trans()
395 kfree(rdma); in rdma_destroy_trans()
401 struct p9_trans_rdma *rdma = client->trans; in post_recv() local
405 c->busa = ib_dma_map_single(rdma->cm_id->device, in post_recv()
408 if (ib_dma_mapping_error(rdma->cm_id->device, c->busa)) in post_recv()
413 sge.lkey = rdma->pd->local_dma_lkey; in post_recv()
420 return ib_post_recv(rdma->qp, &wr, &bad_wr); in post_recv()
429 struct p9_trans_rdma *rdma = client->trans; in rdma_request() local
445 if (unlikely(atomic_read(&rdma->excess_rc) > 0)) { in rdma_request()
446 if ((atomic_sub_return(1, &rdma->excess_rc) >= 0)) { in rdma_request()
453 atomic_inc(&rdma->excess_rc); in rdma_request()
472 if (down_interruptible(&rdma->rq_sem)) { in rdma_request()
494 c->busa = ib_dma_map_single(rdma->cm_id->device, in rdma_request()
497 if (ib_dma_mapping_error(rdma->cm_id->device, c->busa)) { in rdma_request()
504 sge.lkey = rdma->pd->local_dma_lkey; in rdma_request()
514 if (down_interruptible(&rdma->sq_sem)) { in rdma_request()
524 err = ib_post_send(rdma->qp, &wr, &bad_wr); in rdma_request()
540 atomic_inc(&rdma->excess_rc); in rdma_request()
546 spin_lock_irqsave(&rdma->req_lock, flags); in rdma_request()
547 if (rdma->state < P9_RDMA_CLOSING) { in rdma_request()
548 rdma->state = P9_RDMA_CLOSING; in rdma_request()
549 spin_unlock_irqrestore(&rdma->req_lock, flags); in rdma_request()
550 rdma_disconnect(rdma->cm_id); in rdma_request()
552 spin_unlock_irqrestore(&rdma->req_lock, flags); in rdma_request()
558 struct p9_trans_rdma *rdma; in rdma_close() local
563 rdma = client->trans; in rdma_close()
564 if (!rdma) in rdma_close()
568 rdma_disconnect(rdma->cm_id); in rdma_close()
569 rdma_destroy_trans(rdma); in rdma_close()
578 struct p9_trans_rdma *rdma; in alloc_rdma() local
580 rdma = kzalloc(sizeof(struct p9_trans_rdma), GFP_KERNEL); in alloc_rdma()
581 if (!rdma) in alloc_rdma()
584 rdma->sq_depth = opts->sq_depth; in alloc_rdma()
585 rdma->rq_depth = opts->rq_depth; in alloc_rdma()
586 rdma->timeout = opts->timeout; in alloc_rdma()
587 spin_lock_init(&rdma->req_lock); in alloc_rdma()
588 init_completion(&rdma->cm_done); in alloc_rdma()
589 sema_init(&rdma->sq_sem, rdma->sq_depth); in alloc_rdma()
590 sema_init(&rdma->rq_sem, rdma->rq_depth); in alloc_rdma()
591 atomic_set(&rdma->excess_rc, 0); in alloc_rdma()
593 return rdma; in alloc_rdma()
609 struct p9_trans_rdma *rdma = client->trans; in rdma_cancelled() local
610 atomic_inc(&rdma->excess_rc); in rdma_cancelled()
614 static int p9_rdma_bind_privport(struct p9_trans_rdma *rdma) in p9_rdma_bind_privport() argument
624 err = rdma_bind_addr(rdma->cm_id, (struct sockaddr *)&cl); in p9_rdma_bind_privport()
642 struct p9_trans_rdma *rdma; in rdma_create_trans() local
653 rdma = alloc_rdma(&opts); in rdma_create_trans()
654 if (!rdma) in rdma_create_trans()
658 rdma->cm_id = rdma_create_id(&init_net, p9_cm_event_handler, client, in rdma_create_trans()
660 if (IS_ERR(rdma->cm_id)) in rdma_create_trans()
664 client->trans = rdma; in rdma_create_trans()
668 err = p9_rdma_bind_privport(rdma); in rdma_create_trans()
677 rdma->addr.sin_family = AF_INET; in rdma_create_trans()
678 rdma->addr.sin_addr.s_addr = in_aton(addr); in rdma_create_trans()
679 rdma->addr.sin_port = htons(opts.port); in rdma_create_trans()
680 err = rdma_resolve_addr(rdma->cm_id, NULL, in rdma_create_trans()
681 (struct sockaddr *)&rdma->addr, in rdma_create_trans()
682 rdma->timeout); in rdma_create_trans()
685 err = wait_for_completion_interruptible(&rdma->cm_done); in rdma_create_trans()
686 if (err || (rdma->state != P9_RDMA_ADDR_RESOLVED)) in rdma_create_trans()
690 err = rdma_resolve_route(rdma->cm_id, rdma->timeout); in rdma_create_trans()
693 err = wait_for_completion_interruptible(&rdma->cm_done); in rdma_create_trans()
694 if (err || (rdma->state != P9_RDMA_ROUTE_RESOLVED)) in rdma_create_trans()
699 rdma->cq = ib_create_cq(rdma->cm_id->device, cq_comp_handler, in rdma_create_trans()
702 if (IS_ERR(rdma->cq)) in rdma_create_trans()
704 ib_req_notify_cq(rdma->cq, IB_CQ_NEXT_COMP); in rdma_create_trans()
707 rdma->pd = ib_alloc_pd(rdma->cm_id->device); in rdma_create_trans()
708 if (IS_ERR(rdma->pd)) in rdma_create_trans()
721 qp_attr.send_cq = rdma->cq; in rdma_create_trans()
722 qp_attr.recv_cq = rdma->cq; in rdma_create_trans()
723 err = rdma_create_qp(rdma->cm_id, rdma->pd, &qp_attr); in rdma_create_trans()
726 rdma->qp = rdma->cm_id->qp; in rdma_create_trans()
734 err = rdma_connect(rdma->cm_id, &conn_param); in rdma_create_trans()
737 err = wait_for_completion_interruptible(&rdma->cm_done); in rdma_create_trans()
738 if (err || (rdma->state != P9_RDMA_CONNECTED)) in rdma_create_trans()
746 rdma_destroy_trans(rdma); in rdma_create_trans()