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Commit fd5560b4 authored by Bob Pearson's avatar Bob Pearson Committed by Greg Kroah-Hartman
Browse files

RDMA/rxe: Correct skb on loopback path 

[ Upstream commit 5120bf0a5fc15dec210a0fe0f39e4a256bb6e349 ]

rxe_net.c sends packets at the IP layer with skb->data pointing at the IP
header but receives packets from a UDP tunnel with skb->data pointing at
the UDP header.  On the loopback path this was not correctly accounted
for.  This patch corrects for this by using sbk_pull() to strip the IP
header from the skb on received packets.

Fixes: 8700e3e7 ("Soft RoCE driver")
Link: https://lore.kernel.org/r/20210128182301.16859-1-rpearson@hpe.com


Signed-off-by: default avatarBob Pearson <rpearson@hpe.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@nvidia.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 61f18381

drivers/infiniband/sw/rxe/rxe_net.c

+5 −0
Original line number Diff line number Diff line
@@ -500,6 +500,11 @@ int rxe_send(struct rxe_pkt_info *pkt, struct sk_buff *skb) 


void rxe_loopback(struct sk_buff *skb)

{

	if (skb->protocol == htons(ETH_P_IP))

		skb_pull(skb, sizeof(struct iphdr));

	else

		skb_pull(skb, sizeof(struct ipv6hdr));



	rxe_rcv(skb);

}