From 6cd28f044b47aeeba91807d97d6f3ea5a048e88d Mon Sep 17 00:00:00 2001 From: Moni Shoua <monis@mellanox.co.il> Date: Tue, 21 Jan 2014 10:19:37 +0200 Subject: [PATCH] net/mlx4_core: Remove unnecessary validation for port number This is a fix to a regression introduced by commit: "982290a net/mlx4_core: Check port number for validity before accessing data" IPoIB could not attach to multicast group and we get this in dmesg: [144214.145008] ib0: failed to attach to multicast group, ret = -22 [144214.145016] ib0: couldn't attach QP to multicast group ff12:401b:ffff:0000:0000:0000:ffff:ffff [144214.145019] ib0: multicast join failed for ff12:401b:ffff:0000:0000:0000:ffff:ffff, status -22 The cause to the problem is because port is extracted from gid[5]. Which is only valid for Ethernet. Removed this validation in mlx4_qp_attach_common(), which is accessed from both Ethernet and IB flows. Error flow for bad port value in Ethernet is already exists in that function. Signed-off-by: Moni Shoua <monis@mellanox.co.il> Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> --- drivers/net/ethernet/mellanox/mlx4/mcg.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/mcg.c b/drivers/net/ethernet/mellanox/mlx4/mcg.c index bfe65f7be91c..aefb74f56344 100644 --- a/drivers/net/ethernet/mellanox/mlx4/mcg.c +++ b/drivers/net/ethernet/mellanox/mlx4/mcg.c @@ -943,9 +943,6 @@ int mlx4_qp_attach_common(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16], u8 port = gid[5]; u8 new_entry = 0; - if (port < 1 || port > dev->caps.num_ports) - return -EINVAL; - mailbox = mlx4_alloc_cmd_mailbox(dev); if (IS_ERR(mailbox)) return PTR_ERR(mailbox); -- GitLab