From 219d2e9dfda9431b808c28d5efc74b404b95b638 Mon Sep 17 00:00:00 2001 From: Parav Pandit Date: Sun, 29 Jul 2018 11:53:09 +0300 Subject: RDMA/cma: Simplify rdma_resolve_addr() error flow Currently dst address is first set and later on cleared on either of the 3 error conditions are met. However none of the APIs or checks are supposed to refer to the destination address of the cm_id. Therefore, set the destination address after necessary checks pass which simplifies the error flow. Signed-off-by: Parav Pandit Reviewed-by: Daniel Jurgens Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe --- drivers/infiniband/core/cma.c | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-) (limited to 'drivers/infiniband/core') diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index 714fff27d2e3..0794b99d2507 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -2971,25 +2971,19 @@ int rdma_resolve_addr(struct rdma_cm_id *id, struct sockaddr *src_addr, int ret; id_priv = container_of(id, struct rdma_id_private, id); - memcpy(cma_dst_addr(id_priv), dst_addr, rdma_addr_size(dst_addr)); if (id_priv->state == RDMA_CM_IDLE) { ret = cma_bind_addr(id, src_addr, dst_addr); - if (ret) { - memset(cma_dst_addr(id_priv), 0, rdma_addr_size(dst_addr)); + if (ret) return ret; - } } - if (cma_family(id_priv) != dst_addr->sa_family) { - memset(cma_dst_addr(id_priv), 0, rdma_addr_size(dst_addr)); + if (cma_family(id_priv) != dst_addr->sa_family) return -EINVAL; - } - if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_ADDR_QUERY)) { - memset(cma_dst_addr(id_priv), 0, rdma_addr_size(dst_addr)); + if (!cma_comp_exch(id_priv, RDMA_CM_ADDR_BOUND, RDMA_CM_ADDR_QUERY)) return -EINVAL; - } + memcpy(cma_dst_addr(id_priv), dst_addr, rdma_addr_size(dst_addr)); atomic_inc(&id_priv->refcount); if (cma_any_addr(dst_addr)) { ret = cma_resolve_loopback(id_priv); -- cgit v1.2.3