diff options
| author | Jack Morgenstein <jackm@dev.mellanox.co.il> | 2013-03-07 04:46:52 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-03-07 21:52:03 +0100 |
| commit | 3fb817f1cd54bedd23e8913051473d574a0f1717 (patch) | |
| tree | bc57e481e8a5b661294c642d99497e7cccdac6ed /drivers | |
| parent | Merge branch 'master' of git://1984.lsi.us.es/nf (diff) | |
| download | linux-3fb817f1cd54bedd23e8913051473d574a0f1717.tar.xz linux-3fb817f1cd54bedd23e8913051473d574a0f1717.zip | |
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 <jackm@dev.mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/resource_tracker.c | 3 |
1 files changed, 3 insertions, 0 deletions
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) |