RDMA/core: Consider flow label when building skb (9611d53a) · Commits · 戴 / test

Use rdma_flow_label_to_udp_sport to calculate the UDP source port of the RoCEV2 packet. Link: https://lore.kernel.org/r/20200504051935.269708-3-leon@kernel.org Signed-off-by:

drivers/infiniband/core/lag.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -34,7 +34,8 @@ static struct sk_buff rdma_build_skb(struct ib_device device,
		skb_push(skb, sizeof(struct udphdr));
		skb_reset_transport_header(skb);
		uh = udp_hdr(skb);
		uh->source = htons(0xC000);
		uh->source =
		htons(rdma_flow_label_to_udp_sport(ah_attr->grh.flow_label));
		uh->dest = htons(ROCE_V2_UDP_DPORT);
		uh->len = htons(sizeof(struct udphdr));

		@@ -114,7 +115,8 @@ struct net_device rdma_lag_get_ah_roce_slave(struct ib_device device,
		struct net_device *master;

		if (!(ah_attr->type == RDMA_AH_ATTR_TYPE_ROCE &&
		ah_attr->grh.sgid_attr->gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP))
		ah_attr->grh.sgid_attr->gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP &&
		ah_attr->grh.flow_label))
		return NULL;

		rcu_read_lock();