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[4/5] RDS: Do not send congestion updates to loopback connections

Message ID 1256928717-17757-4-git-send-email-andy.grover@oracle.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Andy Grover Oct. 30, 2009, 6:51 p.m. UTC 
This issue was discovered by HP's Pradeep and fixed in OFED
1.3, but not fixed in later versions, since the fix's implementation
was not immediately applyable to the later code. This patch should
do the trick for 1.4+ codebases.

Signed-off-by: Andy Grover <andy.grover@oracle.com>
---
 net/rds/cong.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
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Patch

diff --git a/net/rds/cong.c b/net/rds/cong.c
index dd2711d..6d06cac 100644
--- a/net/rds/cong.c
+++ b/net/rds/cong.c
@@ -218,6 +218,8 @@  void rds_cong_queue_updates(struct rds_cong_map *map)
 	spin_lock_irqsave(&rds_cong_lock, flags);
 
 	list_for_each_entry(conn, &map->m_conn_list, c_map_item) {
+		if (conn->c_loopback)
+			continue;
 		if (!test_and_set_bit(0, &conn->c_map_queued)) {
 			rds_stats_inc(s_cong_update_queued);
 			queue_delayed_work(rds_wq, &conn->c_send_w, 0);