[PATCH AUTOSEL 4.19 328/671] RDMA/rxe: Consider skb reserve space based on netdev of GID

Sasha Levin
2020-01-16T18:58:59Z

From: Parav Pandit <parav@mellanox.com>

[ Upstream commit 3bf3e2b881c1412d0329ce9376dfe1518489b8fc ]

Always consider the skb reserve space based on netdevice of the GID
attribute, regardless of vlan or non vlan netdevice.

Fixes: 43c9fc509fa5 ("rdma_rxe: make rxe work over 802.1q VLAN devices")
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/infiniband/sw/rxe/rxe_net.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/sw/rxe/rxe_net.c b/drivers/infiniband/sw/rxe/rxe_net.c
index 8094cbaa54a9..54add70c22b5 100644
--- a/drivers/infiniband/sw/rxe/rxe_net.c
+++ b/drivers/infiniband/sw/rxe/rxe_net.c
@@ -533,8 +533,9 @@ struct sk_buff *rxe_init_packet(struct rxe_dev *rxe, struct rxe_av *av,
if (unlikely(!skb))
goto out;

- skb_reserve(skb, hdr_len + LL_RESERVED_SPACE(rxe->ndev));
+ skb_reserve(skb, hdr_len + LL_RESERVED_SPACE(ndev));

+ /* FIXME: hold reference to this netdev until life of this skb. */
skb->dev = ndev;
if (av->network_type == RDMA_NETWORK_IPV4)
skb->protocol = htons(ETH_P_IP);
--
2.20.1