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net/mlx5: Check max encap header size capability 

Instead of comparing to a const value, check the value of max encap
header size capability as reported by the Firmware.

Fixes: 575ddf5888 ('net/mlx5: Introduce alloc_encap and dealloc_encap commands')
Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hadar Hen Zion 2016-11-07 15:14:43 +02:00 committed by David S. Miller
parent ae9f83ac24
commit 43f93839e3
1 changed files with 16 additions and 10 deletions
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26
drivers/net/ethernet/mellanox/mlx5/core/fs_cmd.c
View File

@ -453,27 +453,32 @@ void mlx5_cmd_fc_bulk_get(struct mlx5_core_dev *dev,
*bytes = MLX5_GET64(traffic_counter, stats, octets);
}
#define MAX_ENCAP_SIZE (128)
int mlx5_encap_alloc(struct mlx5_core_dev *dev,
int header_type,
size_t size,
void *encap_header,
u32 *encap_id)
{
int max_encap_size = MLX5_CAP_ESW(dev, max_encap_header_size);
u32 out[MLX5_ST_SZ_DW(alloc_encap_header_out)];
u32 in[MLX5_ST_SZ_DW(alloc_encap_header_in) +
(MAX_ENCAP_SIZE / sizeof(u32))];
void *encap_header_in = MLX5_ADDR_OF(alloc_encap_header_in, in,
encap_header);
void *header = MLX5_ADDR_OF(encap_header_in, encap_header_in,
encap_header);
int inlen = header - (void *)in + size;
void *encap_header_in;
void *header;
int inlen;
int err;
u32 *in;
if (size > MAX_ENCAP_SIZE)
if (size > MLX5_CAP_ESW(dev, max_encap_header_size))
return -EINVAL;
in = kzalloc(MLX5_ST_SZ_BYTES(alloc_encap_header_in) + max_encap_size,
GFP_KERNEL);
if (!in)
return -ENOMEM;
encap_header_in = MLX5_ADDR_OF(alloc_encap_header_in, in, encap_header);
header = MLX5_ADDR_OF(encap_header_in, encap_header_in, encap_header);
inlen = header - (void *)in + size;
memset(in, 0, inlen);
MLX5_SET(alloc_encap_header_in, in, opcode,
MLX5_CMD_OP_ALLOC_ENCAP_HEADER);
@ -485,6 +490,7 @@ int mlx5_encap_alloc(struct mlx5_core_dev *dev,
err = mlx5_cmd_exec(dev, in, inlen, out, sizeof(out));
*encap_id = MLX5_GET(alloc_encap_header_out, out, encap_id);
kfree(in);
return err;
}