]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commitdiff
net/mlx4_core: Disable mlx4_QP_ATTACH calls from guests if the host uses flow steering
authorJack Morgenstein <jackm@dev.mellanox.co.il>
Thu, 7 Mar 2013 03:46:52 +0000 (03:46 +0000)
committerDavid S. Miller <davem@davemloft.net>
Thu, 7 Mar 2013 20:52:03 +0000 (15:52 -0500)
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 <jackm@dev.mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/mellanox/mlx4/resource_tracker.c

index 083fb48dc3d7bd7bfa014f8ddc9a7eed81dffca5..2995687f1aee3692ef5c164cff02870607f76224 100644 (file)
@@ -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)