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RDMA/core: Consider flow label when building skb 

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: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Maor Gottlieb 2020-05-04 08:19:32 +03:00 committed by Jason Gunthorpe
parent d5665a2125
commit 9611d53aa1
1 changed files with 4 additions and 2 deletions
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6
drivers/infiniband/core/lag.c
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@ -34,7 +34,8 @@ static struct sk_buff *rdma_build_skb(struct ib_device *device,
skb_push(skb, sizeof(struct udphdr)); skb_push(skb, sizeof(struct udphdr));
skb_reset_transport_header(skb); skb_reset_transport_header(skb);
uh = udp_hdr(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->dest = htons(ROCE_V2_UDP_DPORT);
uh->len = htons(sizeof(struct udphdr)); 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; struct net_device *master;
if (!(ah_attr->type == RDMA_AH_ATTR_TYPE_ROCE && 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; return NULL;
rcu_read_lock(); rcu_read_lock();