diff options
| -rw-r--r-- | net/rds/rds.h | 2 | ||||
| -rw-r--r-- | net/rds/send.c | 12 | ||||
| -rw-r--r-- | net/rds/stats.c | 1 |
3 files changed, 14 insertions, 1 deletions
diff --git a/net/rds/rds.h b/net/rds/rds.h index f0066d168499..ad605fd61655 100644 --- a/net/rds/rds.h +++ b/net/rds/rds.h @@ -717,7 +717,7 @@ struct rds_statistics { uint64_t s_cong_send_blocked; uint64_t s_recv_bytes_added_to_socket; uint64_t s_recv_bytes_removed_from_socket; - + uint64_t s_send_stuck_rm; }; /* af_rds.c */ diff --git a/net/rds/send.c b/net/rds/send.c index 031b1e97a466..9ce552abf9e9 100644 --- a/net/rds/send.c +++ b/net/rds/send.c @@ -145,6 +145,7 @@ int rds_send_xmit(struct rds_conn_path *cp) LIST_HEAD(to_be_dropped); int batch_count; unsigned long send_gen = 0; + int same_rm = 0; restart: batch_count = 0; @@ -200,6 +201,17 @@ restart: rm = cp->cp_xmit_rm; + if (!rm) { + same_rm = 0; + } else { + same_rm++; + if (same_rm >= 4096) { + rds_stats_inc(s_send_stuck_rm); + ret = -EAGAIN; + break; + } + } + /* * If between sending messages, we can send a pending congestion * map update. diff --git a/net/rds/stats.c b/net/rds/stats.c index 6bbab4d74c4f..9e87da43c004 100644 --- a/net/rds/stats.c +++ b/net/rds/stats.c @@ -78,6 +78,7 @@ static const char *const rds_stat_names[] = { "cong_send_blocked", "recv_bytes_added_to_sock", "recv_bytes_freed_fromsock", + "send_stuck_rm", }; void rds_stats_info_copy(struct rds_info_iterator *iter, |