diff options
| author | Jack Morgenstein <jackm@dev.mellanox.co.il> | 2013-03-07 03:46:53 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-03-07 15:52:03 -0500 |
| commit | 0081c8f3814a8344ca975c085d987ec6c90499ae (patch) | |
| tree | 1be0a1a1c9bc6380e655b580d8236c9ea3c16fc2 | |
| parent | 3fb817f1cd54bedd23e8913051473d574a0f1717 (diff) | |
| download | perf-0081c8f3814a8344ca975c085d987ec6c90499ae.tar.gz | |
net/mlx4_core: Turn off device-managed FS bit in dev-cap wrapper if DMFS is not enabled
Older kernels detect DMFS (device-managed flow steering) from the HCA
device capability directly, regardless of whether the capability was
enabled in INIT_HCA, this is fixed by commit 7b8157bed "mlx4_core: Adjustments
to Flow Steering activation logic for SR-IOV"
To protect against guests running kernels without this fix, the host driver
should turn off the DMFS capability bit in mlx4_QUERY_DEV_CAP_wrapper.
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>
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/fw.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c index 50917eb3013e1b..f6245579962d5f 100644 --- a/drivers/net/ethernet/mellanox/mlx4/fw.c +++ b/drivers/net/ethernet/mellanox/mlx4/fw.c @@ -787,6 +787,14 @@ int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave, bmme_flags &= ~MLX4_BMME_FLAG_TYPE_2_WIN; MLX4_PUT(outbox->buf, bmme_flags, QUERY_DEV_CAP_BMME_FLAGS_OFFSET); + /* turn off device-managed steering capability if not enabled */ + if (dev->caps.steering_mode != MLX4_STEERING_MODE_DEVICE_MANAGED) { + MLX4_GET(field, outbox->buf, + QUERY_DEV_CAP_FLOW_STEERING_RANGE_EN_OFFSET); + field &= 0x7f; + MLX4_PUT(outbox->buf, field, + QUERY_DEV_CAP_FLOW_STEERING_RANGE_EN_OFFSET); + } return 0; } |