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mlx4: fix buffer overrun

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When passing MLX4_UC_STEER=1 it was translated to value 2
after mlx4_QP_ATTACH_wrapper. Therefore in new_steering_entry()
unicast steer entries were added to index 2 of array of size 2.
Fixing this bug by shift right to one position.

Signed-off-by: Eugenia Emantayev <[email protected]>
Reviewed-by: Yevgeny Petrilin <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Eugenia Emantayev 2012-02-15 06:22:49 +00:00 • committed by David S. Miller
commit 75c6062cb7
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
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@ -2538,7 +2538,7 @@ int mlx4_QP_ATTACH_wrapper(struct mlx4_dev *dev, int slave,
int attach = vhcr->op_modifier;
int block_loopback = vhcr->in_modifier >> 31;
u8 steer_type_mask = 2;
enum mlx4_steer_type type = gid[7] & steer_type_mask;
enum mlx4_steer_type type = (gid[7] & steer_type_mask) >> 1;
qpn = vhcr->in_modifier & 0xffffff;
err = get_res(dev, slave, qpn, RES_QP, &rqp);