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author | Or Gerlitz <ogerlitz@mellanox.com> | 2015-12-18 10:59:48 +0200 |
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committer | Doug Ledford <dledford@redhat.com> | 2015-12-22 14:39:00 -0500 |
commit | e3e45b1b43988b99007a9908ca0ba738b3fbd0ff (patch) | |
tree | 4a3a137681b8f21bcbdead3cb856226f2fcb927c /net/sunrpc/xprtrdma/svc_rdma_transport.c | |
parent | 0353261c12c3c40483921a872d74d2f90c1bd46b (diff) | |
download | linux-e3e45b1b43988b99007a9908ca0ba738b3fbd0ff.tar.gz linux-e3e45b1b43988b99007a9908ca0ba738b3fbd0ff.tar.bz2 linux-e3e45b1b43988b99007a9908ca0ba738b3fbd0ff.zip |
xprtrdma: Avoid calling ib_query_device
Instead, use the cached copy of the attributes present on the device.
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'net/sunrpc/xprtrdma/svc_rdma_transport.c')
-rw-r--r-- | net/sunrpc/xprtrdma/svc_rdma_transport.c | 48 |
1 files changed, 19 insertions, 29 deletions
diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c index b348b4adef29..4d695afdaf8b 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_transport.c +++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c @@ -886,10 +886,10 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt) struct rdma_conn_param conn_param; struct ib_cq_init_attr cq_attr = {}; struct ib_qp_init_attr qp_attr; - struct ib_device_attr devattr; + struct ib_device *dev; int uninitialized_var(dma_mr_acc); int need_dma_mr = 0; - int ret; + int ret = 0; int i; listen_rdma = container_of(xprt, struct svcxprt_rdma, sc_xprt); @@ -910,20 +910,15 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt) dprintk("svcrdma: newxprt from accept queue = %p, cm_id=%p\n", newxprt, newxprt->sc_cm_id); - ret = ib_query_device(newxprt->sc_cm_id->device, &devattr); - if (ret) { - dprintk("svcrdma: could not query device attributes on " - "device %p, rc=%d\n", newxprt->sc_cm_id->device, ret); - goto errout; - } + dev = newxprt->sc_cm_id->device; /* Qualify the transport resource defaults with the * capabilities of this particular device */ - newxprt->sc_max_sge = min((size_t)devattr.max_sge, + newxprt->sc_max_sge = min((size_t)dev->attrs.max_sge, (size_t)RPCSVC_MAXPAGES); - newxprt->sc_max_sge_rd = min_t(size_t, devattr.max_sge_rd, + newxprt->sc_max_sge_rd = min_t(size_t, dev->attrs.max_sge_rd, RPCSVC_MAXPAGES); - newxprt->sc_max_requests = min((size_t)devattr.max_qp_wr, + newxprt->sc_max_requests = min((size_t)dev->attrs.max_qp_wr, (size_t)svcrdma_max_requests); newxprt->sc_sq_depth = RPCRDMA_SQ_DEPTH_MULT * newxprt->sc_max_requests; @@ -931,16 +926,16 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt) * Limit ORD based on client limit, local device limit, and * configured svcrdma limit. */ - newxprt->sc_ord = min_t(size_t, devattr.max_qp_rd_atom, newxprt->sc_ord); + newxprt->sc_ord = min_t(size_t, dev->attrs.max_qp_rd_atom, newxprt->sc_ord); newxprt->sc_ord = min_t(size_t, svcrdma_ord, newxprt->sc_ord); - newxprt->sc_pd = ib_alloc_pd(newxprt->sc_cm_id->device); + newxprt->sc_pd = ib_alloc_pd(dev); if (IS_ERR(newxprt->sc_pd)) { dprintk("svcrdma: error creating PD for connect request\n"); goto errout; } cq_attr.cqe = newxprt->sc_sq_depth; - newxprt->sc_sq_cq = ib_create_cq(newxprt->sc_cm_id->device, + newxprt->sc_sq_cq = ib_create_cq(dev, sq_comp_handler, cq_event_handler, newxprt, @@ -950,7 +945,7 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt) goto errout; } cq_attr.cqe = newxprt->sc_max_requests; - newxprt->sc_rq_cq = ib_create_cq(newxprt->sc_cm_id->device, + newxprt->sc_rq_cq = ib_create_cq(dev, rq_comp_handler, cq_event_handler, newxprt, @@ -978,7 +973,7 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt) " cap.max_send_sge = %d\n" " cap.max_recv_sge = %d\n", newxprt->sc_cm_id, newxprt->sc_pd, - newxprt->sc_cm_id->device, newxprt->sc_pd->device, + dev, newxprt->sc_pd->device, qp_attr.cap.max_send_wr, qp_attr.cap.max_recv_wr, qp_attr.cap.max_send_sge, @@ -1014,9 +1009,9 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt) * of an RDMA_READ. IB does not. */ newxprt->sc_reader = rdma_read_chunk_lcl; - if (devattr.device_cap_flags & IB_DEVICE_MEM_MGT_EXTENSIONS) { + if (dev->attrs.device_cap_flags & IB_DEVICE_MEM_MGT_EXTENSIONS) { newxprt->sc_frmr_pg_list_len = - devattr.max_fast_reg_page_list_len; + dev->attrs.max_fast_reg_page_list_len; newxprt->sc_dev_caps |= SVCRDMA_DEVCAP_FAST_REG; newxprt->sc_reader = rdma_read_chunk_frmr; } @@ -1024,24 +1019,20 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt) /* * Determine if a DMA MR is required and if so, what privs are required */ - if (!rdma_protocol_iwarp(newxprt->sc_cm_id->device, - newxprt->sc_cm_id->port_num) && - !rdma_ib_or_roce(newxprt->sc_cm_id->device, - newxprt->sc_cm_id->port_num)) + if (!rdma_protocol_iwarp(dev, newxprt->sc_cm_id->port_num) && + !rdma_ib_or_roce(dev, newxprt->sc_cm_id->port_num)) goto errout; if (!(newxprt->sc_dev_caps & SVCRDMA_DEVCAP_FAST_REG) || - !(devattr.device_cap_flags & IB_DEVICE_LOCAL_DMA_LKEY)) { + !(dev->attrs.device_cap_flags & IB_DEVICE_LOCAL_DMA_LKEY)) { need_dma_mr = 1; dma_mr_acc = IB_ACCESS_LOCAL_WRITE; - if (rdma_protocol_iwarp(newxprt->sc_cm_id->device, - newxprt->sc_cm_id->port_num) && + if (rdma_protocol_iwarp(dev, newxprt->sc_cm_id->port_num) && !(newxprt->sc_dev_caps & SVCRDMA_DEVCAP_FAST_REG)) dma_mr_acc |= IB_ACCESS_REMOTE_WRITE; } - if (rdma_protocol_iwarp(newxprt->sc_cm_id->device, - newxprt->sc_cm_id->port_num)) + if (rdma_protocol_iwarp(dev, newxprt->sc_cm_id->port_num)) newxprt->sc_dev_caps |= SVCRDMA_DEVCAP_READ_W_INV; /* Create the DMA MR if needed, otherwise, use the DMA LKEY */ @@ -1056,8 +1047,7 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt) } newxprt->sc_dma_lkey = newxprt->sc_phys_mr->lkey; } else - newxprt->sc_dma_lkey = - newxprt->sc_cm_id->device->local_dma_lkey; + newxprt->sc_dma_lkey = dev->local_dma_lkey; /* Post receive buffers */ for (i = 0; i < newxprt->sc_max_requests; i++) { |