Initialize traffic_class to 0 so that it wouldn't have a random value,
which causes a random IP DSCP in RoCEv2.
Fixes: b5de0c60cc30 ("RDMA/cma: Fix use after free race in roce multicast join")
Signed-off-by: Mark Zhang <markzhang@xxxxxxxxxx>
---
drivers/infiniband/core/cma.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index c343edf2f664..d3a72f4b9863 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -4990,6 +4990,7 @@ static int cma_iboe_join_multicast(struct rdma_id_private *id_priv,
ib.rec.rate = IB_RATE_PORT_CURRENT;
ib.rec.hop_limit = 1;
ib.rec.mtu = iboe_get_mtu(ndev->mtu);
+ ib.rec.traffic_class = 0;
if (addr->sa_family == AF_INET) {
if (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) {
--
2.37.1
