From 3fb817f1cd54bedd23e8913051473d574a0f1717 Mon Sep 17 00:00:00 2001 From: Jack Morgenstein Date: Thu, 7 Mar 2013 03:46:52 +0000 Subject: [PATCH] net/mlx4_core: Disable mlx4_QP_ATTACH calls from guests if the host uses flow steering Guests kernels may not correctly detect if DMFS (device-enabled flow steering) is activated by the host. If DMFS is activated, the master should return error to guests which try to use the B0-steering flow calls (mlx4_QP_ATTACH). Signed-off-by: Jack Morgenstein Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/resource_tracker.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c index 083fb48dc3d7..2995687f1aee 100644 --- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c +++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c @@ -2990,6 +2990,9 @@ int mlx4_QP_ATTACH_wrapper(struct mlx4_dev *dev, int slave, u8 steer_type_mask = 2; enum mlx4_steer_type type = (gid[7] & steer_type_mask) >> 1; + if (dev->caps.steering_mode != MLX4_STEERING_MODE_B0) + return -EINVAL; + qpn = vhcr->in_modifier & 0xffffff; err = get_res(dev, slave, qpn, RES_QP, &rqp); if (err) -- 2.20.1