1 files changed, 7 insertions, 0 deletions

diff --git a/net/rds/ib_send.c b/net/rds/ib_send.c
index f380c3f01256..c18228aec779 100644
--- a/net/rds/ib_send.c
+++ b/net/rds/ib_send.c
@@ -482,6 +482,13 @@ int rds_ib_xmit(struct rds_connection *conn, struct rds_message *rm,
         BUG_ON(off % RDS_FRAG_SIZE);
         BUG_ON(hdr_off != 0 && hdr_off != sizeof(struct rds_header));
 
+        /* Do not send cong updates to IB loopback */
+        if (conn->c_loopback
+            && rm->m_inc.i_hdr.h_flags & RDS_FLAG_CONG_BITMAP) {
+                rds_cong_map_updated(conn->c_fcong, ~(u64) 0);
+                return sizeof(struct rds_header) + RDS_CONG_MAP_BYTES;
+        }
+
         /* FIXME we may overallocate here */
         if (be32_to_cpu(rm->m_inc.i_hdr.h_len) == 0)
                 i = 1;