RDS: Stop supporting old cong map sending method

We now ask the transport to give us a rm for the congestion
map, and then we handle it normally. Previously, the
transport defined a function that we would call to send
a congestion map.

Convert TCP and loop transports to new cong map method.

Signed-off-by: Andy Grover <andy.grover@oracle.com>

1 files changed, 6 insertions, 13 deletions

diff --git a/net/rds/loop.c b/net/rds/loop.c
index 4a3dd49315b..c390156b426 100644
--- a/net/rds/loop.c
+++ b/net/rds/loop.c
@@ -61,6 +61,12 @@ static int rds_loop_xmit(struct rds_connection *conn, struct rds_message *rm,
                          unsigned int hdr_off, unsigned int sg,
                          unsigned int off)
 {
+        /* Do not send cong updates to loopback */
+        if (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;
+        }
+
         BUG_ON(hdr_off || sg || off);
 
         rds_inc_init(&rm->m_inc, conn, conn->c_laddr);
@@ -88,18 +94,6 @@ static void rds_loop_inc_free(struct rds_incoming *inc)
         rds_message_put(rm);
 }
 
-static int rds_loop_xmit_cong_map(struct rds_connection *conn,
-                                  struct rds_cong_map *map,
-                                  unsigned long offset)
-{
-        BUG_ON(offset);
-        BUG_ON(map != conn->c_lcong);
-
-        rds_cong_map_updated(conn->c_fcong, ~(u64) 0);
-
-        return sizeof(struct rds_header) + RDS_CONG_MAP_BYTES;
-}
-
 /* we need to at least give the thread something to succeed */
 static int rds_loop_recv(struct rds_connection *conn)
 {
@@ -180,7 +174,6 @@ void rds_loop_exit(void)
  */
 struct rds_transport rds_loop_transport = {
         .xmit                   = rds_loop_xmit,
-        .xmit_cong_map          = rds_loop_xmit_cong_map,
         .recv                   = rds_loop_recv,
         .conn_alloc             = rds_loop_conn_alloc,
         .conn_free              = rds_loop_conn_free,