diff options
| author | Markus Stockhausen <stockhausen@collogia.de> | 2014-08-13 14:07:30 +0000 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2014-09-19 10:07:03 -0700 |
| commit | 50e2ec9105fe1045298924a6c7b9ce870a0b6c13 (patch) | |
| tree | 3bc8e8bc20e8827b120e89329e2279d651fdc3c9 /drivers/infiniband | |
| parent | 52addcf9d6669fa439387610bc65c92fa0980cef (diff) | |
| download | talos-obmc-linux-50e2ec9105fe1045298924a6c7b9ce870a0b6c13.tar.gz talos-obmc-linux-50e2ec9105fe1045298924a6c7b9ce870a0b6c13.zip | |
IB/mlx4: Disable TSO for Connect-X rev. A0 HCAs
According to <http://marc.info/?t=138347640900004&r=1&w=2>, revision
A0 of Connect-X does not correctly assemble TSO packets. Disable that
feature on that hardware revision.
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/mlx4/main.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c index e1e558a3d692..20f731f08c7e 100644 --- a/drivers/infiniband/hw/mlx4/main.c +++ b/drivers/infiniband/hw/mlx4/main.c @@ -59,6 +59,7 @@ #define MLX4_IB_FLOW_MAX_PRIO 0xFFF #define MLX4_IB_FLOW_QPN_MASK 0xFFFFFF +#define MLX4_IB_CARD_REV_A0 0xA0 MODULE_AUTHOR("Roland Dreier"); MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver"); @@ -158,7 +159,9 @@ static int mlx4_ib_query_device(struct ib_device *ibdev, props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE; if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM) props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; - if (dev->dev->caps.max_gso_sz && dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH) + if (dev->dev->caps.max_gso_sz && + (dev->dev->rev_id != MLX4_IB_CARD_REV_A0) && + (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH)) props->device_cap_flags |= IB_DEVICE_UD_TSO; if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY) props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY; |
