diff options
Diffstat (limited to 'net/rds/loop.c')
| -rw-r--r-- | net/rds/loop.c | 31 |
1 files changed, 17 insertions, 14 deletions
diff --git a/net/rds/loop.c b/net/rds/loop.c index dd987937945..c390156b426 100644 --- a/net/rds/loop.c +++ b/net/rds/loop.c @@ -61,10 +61,17 @@ 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); - rds_message_addref(rm); /* for the inc */ + /* For the embedded inc. Matching put is in loop_inc_free() */ + rds_message_addref(rm); rds_recv_incoming(conn, conn->c_laddr, conn->c_faddr, &rm->m_inc, GFP_KERNEL, KM_USER0); @@ -77,16 +84,14 @@ static int rds_loop_xmit(struct rds_connection *conn, struct rds_message *rm, return sizeof(struct rds_header) + be32_to_cpu(rm->m_inc.i_hdr.h_len); } -static int rds_loop_xmit_cong_map(struct rds_connection *conn, - struct rds_cong_map *map, - unsigned long offset) +/* + * See rds_loop_xmit(). Since our inc is embedded in the rm, we + * make sure the rm lives at least until the inc is done. + */ +static void rds_loop_inc_free(struct rds_incoming *inc) { - 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; + struct rds_message *rm = container_of(inc, struct rds_message, m_inc); + rds_message_put(rm); } /* we need to at least give the thread something to succeed */ @@ -112,7 +117,7 @@ static int rds_loop_conn_alloc(struct rds_connection *conn, gfp_t gfp) unsigned long flags; lc = kzalloc(sizeof(struct rds_loop_connection), GFP_KERNEL); - if (lc == NULL) + if (!lc) return -ENOMEM; INIT_LIST_HEAD(&lc->loop_node); @@ -169,14 +174,12 @@ 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, .conn_connect = rds_loop_conn_connect, .conn_shutdown = rds_loop_conn_shutdown, .inc_copy_to_user = rds_message_inc_copy_to_user, - .inc_purge = rds_message_inc_purge, - .inc_free = rds_message_inc_free, + .inc_free = rds_loop_inc_free, .t_name = "loopback", }; |