diff options
| author | Eli Cohen <eli@dev.mellanox.co.il> | 2012-02-09 18:10:06 +0200 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2012-02-26 01:43:37 -0800 |
| commit | a5bbe892da9441835cb6fece26d9bbd95fc820be (patch) | |
| tree | 2642ee58996918ae4a09be9d82d97a6516eb215b /drivers/net | |
| parent | 4ba6b8eaa9d67d03fb653cb8a13afca3236d4d70 (diff) | |
| download | op-kernel-dev-a5bbe892da9441835cb6fece26d9bbd95fc820be.zip op-kernel-dev-a5bbe892da9441835cb6fece26d9bbd95fc820be.tar.gz | |
mlx4: Enforce device max FMR maps in FMR alloc
ConnectX devices have a limit on the number of mappings that can be
done on an FMR before having to call sync_tpt. The current
mlx4_ib driver reports the limit correctly in max_map_per_fmr in
.query_device(), but mlx4_core doesn't check it when actually
allocating FMRs.
Add a max_fmr_maps field to struct mlx4_caps and enforce this maximum
value on FMR allocations.
Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/main.c | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/mr.c | 3 |
2 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c index 678558b..3e593ae 100644 --- a/drivers/net/ethernet/mellanox/mlx4/main.c +++ b/drivers/net/ethernet/mellanox/mlx4/main.c @@ -1131,6 +1131,8 @@ static int mlx4_init_hca(struct mlx4_dev *dev) goto err_stop_fw; } + dev->caps.max_fmr_maps = (1 << (32 - ilog2(dev->caps.num_mpts))) - 1; + init_hca.log_uar_sz = ilog2(dev->caps.num_uars); init_hca.uar_page_sz = PAGE_SHIFT - 12; diff --git a/drivers/net/ethernet/mellanox/mlx4/mr.c b/drivers/net/ethernet/mellanox/mlx4/mr.c index 25a80d7..5b7c06e 100644 --- a/drivers/net/ethernet/mellanox/mlx4/mr.c +++ b/drivers/net/ethernet/mellanox/mlx4/mr.c @@ -816,6 +816,9 @@ int mlx4_fmr_alloc(struct mlx4_dev *dev, u32 pd, u32 access, int max_pages, u64 mtt_offset; int err = -ENOMEM; + if (max_maps > dev->caps.max_fmr_maps) + return -EINVAL; + if (page_shift < (ffs(dev->caps.page_size_cap) - 1) || page_shift >= 32) return -EINVAL; |
