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| author | Eli Cohen <eli@mellanox.co.il> | 2009-11-12 11:19:44 -0800 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2009-11-12 11:19:44 -0800 |
| commit | 417608c20a4c8397bc5307d949ec01ea0a0dd8e5 (patch) | |
| tree | 9986edf24a8d52fdfc5f51b2cb50f56c4eeb0c6c /include/linux/mlx4 | |
| parent | ecdc428e4c5d821a07baf4f8b1718faf67b9026f (diff) | |
| download | blackbird-op-linux-417608c20a4c8397bc5307d949ec01ea0a0dd8e5.tar.gz blackbird-op-linux-417608c20a4c8397bc5307d949ec01ea0a0dd8e5.zip | |
IB/mlx4: Remove limitation on LSO header size
Current code has a limitation: an LSO header is not allowed to cross a
64 byte boundary. This patch removes this limitation by setting the
WQE RR for large headers thus allowing LSO headers of any size. The
extra buffer reserved for MLX4_IB_QP_LSO QPs has been doubled, from 64
to 128 bytes, assuming this is reasonable upper limit for header
length. Also, this patch will cause IB_DEVICE_UD_TSO to be set only
for HCA FW versions that set MLX4_DEV_CAP_FLAG_BLH; e.g. FW version
2.6.000 and higher.
Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'include/linux/mlx4')
| -rw-r--r-- | include/linux/mlx4/device.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h index ce7cc6c7bcbb..e92d1bfdb330 100644 --- a/include/linux/mlx4/device.h +++ b/include/linux/mlx4/device.h @@ -61,6 +61,7 @@ enum { MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR = 1 << 8, MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR = 1 << 9, MLX4_DEV_CAP_FLAG_DPDP = 1 << 12, + MLX4_DEV_CAP_FLAG_BLH = 1 << 15, MLX4_DEV_CAP_FLAG_MEM_WINDOW = 1 << 16, MLX4_DEV_CAP_FLAG_APM = 1 << 17, MLX4_DEV_CAP_FLAG_ATOMIC = 1 << 18, |
