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path: root/net/sunrpc/xprtrdma/verbs.c
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Diffstat (limited to 'net/sunrpc/xprtrdma/verbs.c')
-rw-r--r--net/sunrpc/xprtrdma/verbs.c96
1 files changed, 35 insertions, 61 deletions
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index 11d07748f699..81cd31acf690 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -54,6 +54,7 @@
#include <linux/sunrpc/svc_rdma.h>
#include <asm/bitops.h>
#include <linux/module.h> /* try_module_get()/module_put() */
+#include <rdma/ib_cm.h>
#include "xprt_rdma.h"
@@ -208,6 +209,7 @@ rpcrdma_update_connect_private(struct rpcrdma_xprt *r_xprt,
/* Default settings for RPC-over-RDMA Version One */
r_xprt->rx_ia.ri_reminv_expected = false;
+ r_xprt->rx_ia.ri_implicit_roundup = xprt_rdma_pad_optimize;
rsize = RPCRDMA_V1_DEF_INLINE_SIZE;
wsize = RPCRDMA_V1_DEF_INLINE_SIZE;
@@ -215,6 +217,7 @@ rpcrdma_update_connect_private(struct rpcrdma_xprt *r_xprt,
pmsg->cp_magic == rpcrdma_cmp_magic &&
pmsg->cp_version == RPCRDMA_CMP_VERSION) {
r_xprt->rx_ia.ri_reminv_expected = true;
+ r_xprt->rx_ia.ri_implicit_roundup = true;
rsize = rpcrdma_decode_buffer_size(pmsg->cp_send_size);
wsize = rpcrdma_decode_buffer_size(pmsg->cp_recv_size);
}
@@ -277,7 +280,14 @@ rpcrdma_conn_upcall(struct rdma_cm_id *id, struct rdma_cm_event *event)
connstate = -ENETDOWN;
goto connected;
case RDMA_CM_EVENT_REJECTED:
+#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
+ pr_info("rpcrdma: connection to %pIS:%u on %s rejected: %s\n",
+ sap, rpc_get_port(sap), ia->ri_device->name,
+ rdma_reject_msg(id, event->status));
+#endif
connstate = -ECONNREFUSED;
+ if (event->status == IB_CM_REJ_STALE_CONN)
+ connstate = -EAGAIN;
goto connected;
case RDMA_CM_EVENT_DISCONNECTED:
connstate = -ECONNABORTED;
@@ -486,18 +496,19 @@ rpcrdma_ia_close(struct rpcrdma_ia *ia)
*/
int
rpcrdma_ep_create(struct rpcrdma_ep *ep, struct rpcrdma_ia *ia,
- struct rpcrdma_create_data_internal *cdata)
+ struct rpcrdma_create_data_internal *cdata)
{
struct rpcrdma_connect_private *pmsg = &ep->rep_cm_private;
+ unsigned int max_qp_wr, max_sge;
struct ib_cq *sendcq, *recvcq;
- unsigned int max_qp_wr;
int rc;
- if (ia->ri_device->attrs.max_sge < RPCRDMA_MAX_SEND_SGES) {
- dprintk("RPC: %s: insufficient sge's available\n",
- __func__);
+ max_sge = min(ia->ri_device->attrs.max_sge, RPCRDMA_MAX_SEND_SGES);
+ if (max_sge < RPCRDMA_MIN_SEND_SGES) {
+ pr_warn("rpcrdma: HCA provides only %d send SGEs\n", max_sge);
return -ENOMEM;
}
+ ia->ri_max_send_sges = max_sge - RPCRDMA_MIN_SEND_SGES;
if (ia->ri_device->attrs.max_qp_wr <= RPCRDMA_BACKWARD_WRS) {
dprintk("RPC: %s: insufficient wqe's available\n",
@@ -522,7 +533,7 @@ rpcrdma_ep_create(struct rpcrdma_ep *ep, struct rpcrdma_ia *ia,
ep->rep_attr.cap.max_recv_wr = cdata->max_requests;
ep->rep_attr.cap.max_recv_wr += RPCRDMA_BACKWARD_WRS;
ep->rep_attr.cap.max_recv_wr += 1; /* drain cqe */
- ep->rep_attr.cap.max_send_sge = RPCRDMA_MAX_SEND_SGES;
+ ep->rep_attr.cap.max_send_sge = max_sge;
ep->rep_attr.cap.max_recv_sge = 1;
ep->rep_attr.cap.max_inline_data = 0;
ep->rep_attr.sq_sig_type = IB_SIGNAL_REQ_WR;
@@ -640,20 +651,21 @@ rpcrdma_ep_destroy(struct rpcrdma_ep *ep, struct rpcrdma_ia *ia)
int
rpcrdma_ep_connect(struct rpcrdma_ep *ep, struct rpcrdma_ia *ia)
{
+ struct rpcrdma_xprt *r_xprt = container_of(ia, struct rpcrdma_xprt,
+ rx_ia);
struct rdma_cm_id *id, *old;
+ struct sockaddr *sap;
+ unsigned int extras;
int rc = 0;
- int retry_count = 0;
if (ep->rep_connected != 0) {
- struct rpcrdma_xprt *xprt;
retry:
dprintk("RPC: %s: reconnecting...\n", __func__);
rpcrdma_ep_disconnect(ep, ia);
- xprt = container_of(ia, struct rpcrdma_xprt, rx_ia);
- id = rpcrdma_create_id(xprt, ia,
- (struct sockaddr *)&xprt->rx_data.addr);
+ sap = (struct sockaddr *)&r_xprt->rx_data.addr;
+ id = rpcrdma_create_id(r_xprt, ia, sap);
if (IS_ERR(id)) {
rc = -EHOSTUNREACH;
goto out;
@@ -708,51 +720,18 @@ retry:
}
wait_event_interruptible(ep->rep_connect_wait, ep->rep_connected != 0);
-
- /*
- * Check state. A non-peer reject indicates no listener
- * (ECONNREFUSED), which may be a transient state. All
- * others indicate a transport condition which has already
- * undergone a best-effort.
- */
- if (ep->rep_connected == -ECONNREFUSED &&
- ++retry_count <= RDMA_CONNECT_RETRY_MAX) {
- dprintk("RPC: %s: non-peer_reject, retry\n", __func__);
- goto retry;
- }
if (ep->rep_connected <= 0) {
- /* Sometimes, the only way to reliably connect to remote
- * CMs is to use same nonzero values for ORD and IRD. */
- if (retry_count++ <= RDMA_CONNECT_RETRY_MAX + 1 &&
- (ep->rep_remote_cma.responder_resources == 0 ||
- ep->rep_remote_cma.initiator_depth !=
- ep->rep_remote_cma.responder_resources)) {
- if (ep->rep_remote_cma.responder_resources == 0)
- ep->rep_remote_cma.responder_resources = 1;
- ep->rep_remote_cma.initiator_depth =
- ep->rep_remote_cma.responder_resources;
+ if (ep->rep_connected == -EAGAIN)
goto retry;
- }
rc = ep->rep_connected;
- } else {
- struct rpcrdma_xprt *r_xprt;
- unsigned int extras;
-
- dprintk("RPC: %s: connected\n", __func__);
-
- r_xprt = container_of(ia, struct rpcrdma_xprt, rx_ia);
- extras = r_xprt->rx_buf.rb_bc_srv_max_requests;
-
- if (extras) {
- rc = rpcrdma_ep_post_extra_recv(r_xprt, extras);
- if (rc) {
- pr_warn("%s: rpcrdma_ep_post_extra_recv: %i\n",
- __func__, rc);
- rc = 0;
- }
- }
+ goto out;
}
+ dprintk("RPC: %s: connected\n", __func__);
+ extras = r_xprt->rx_buf.rb_bc_srv_max_requests;
+ if (extras)
+ rpcrdma_ep_post_extra_recv(r_xprt, extras);
+
out:
if (rc)
ep->rep_connected = rc;
@@ -797,9 +776,7 @@ rpcrdma_mr_recovery_worker(struct work_struct *work)
spin_lock(&buf->rb_recovery_lock);
while (!list_empty(&buf->rb_stale_mrs)) {
- mw = list_first_entry(&buf->rb_stale_mrs,
- struct rpcrdma_mw, mw_list);
- list_del_init(&mw->mw_list);
+ mw = rpcrdma_pop_mw(&buf->rb_stale_mrs);
spin_unlock(&buf->rb_recovery_lock);
dprintk("RPC: %s: recovering MR %p\n", __func__, mw);
@@ -817,7 +794,7 @@ rpcrdma_defer_mr_recovery(struct rpcrdma_mw *mw)
struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
spin_lock(&buf->rb_recovery_lock);
- list_add(&mw->mw_list, &buf->rb_stale_mrs);
+ rpcrdma_push_mw(mw, &buf->rb_stale_mrs);
spin_unlock(&buf->rb_recovery_lock);
schedule_delayed_work(&buf->rb_recovery_worker, 0);
@@ -1093,11 +1070,8 @@ rpcrdma_get_mw(struct rpcrdma_xprt *r_xprt)
struct rpcrdma_mw *mw = NULL;
spin_lock(&buf->rb_mwlock);
- if (!list_empty(&buf->rb_mws)) {
- mw = list_first_entry(&buf->rb_mws,
- struct rpcrdma_mw, mw_list);
- list_del_init(&mw->mw_list);
- }
+ if (!list_empty(&buf->rb_mws))
+ mw = rpcrdma_pop_mw(&buf->rb_mws);
spin_unlock(&buf->rb_mwlock);
if (!mw)
@@ -1120,7 +1094,7 @@ rpcrdma_put_mw(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mw *mw)
struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
spin_lock(&buf->rb_mwlock);
- list_add_tail(&mw->mw_list, &buf->rb_mws);
+ rpcrdma_push_mw(mw, &buf->rb_mws);
spin_unlock(&buf->rb_mwlock);
}
generated by cgit (git 2.34.1) at 2024-05-29 22:46:48 +0000