net/mlx5: Use exact encap header size for the FW input buffer

The current code is allocating the max encap size supported by
the firmware and not the size requested by the caller, fix that.

Also, spare a warning when the size of the encapsulation headers
is bigger from what is supported by the firmware.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c
index c4478ecd8056e42de2c359eb7a2abfd9e6400090..b5253b59e8fe12ada11906b2a4aa8f8c2eb4a66a 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c
@@ -473,10 +473,13 @@ int mlx5_encap_alloc(struct mlx5_core_dev *dev,
        int err;
        u32 *in;
 
-       if (size > MLX5_CAP_ESW(dev, max_encap_header_size))
+       if (size > max_encap_size) {
+               mlx5_core_warn(dev, "encap size %zd too big, max supported is %d\n",
+                              size, max_encap_size);
                return -EINVAL;
+       }
 
-       in = kzalloc(MLX5_ST_SZ_BYTES(alloc_encap_header_in) + max_encap_size,
+       in = kzalloc(MLX5_ST_SZ_BYTES(alloc_encap_header_in) + size,
                     GFP_KERNEL);
        if (!in)
                return -ENOMEM;