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RDMA/mlx4: Delete duplicated offsetofend implementation

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Convert mlx4 to use in-kernel offsetofend() instead
of its duplicated implementation.

Link: https://lore.kernel.org/r/20200310091438.248429-3-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Leon Romanovsky 2020-03-10 11:14:29 +02:00 committed by Jason Gunthorpe
parent 41e684ef3f
commit 282e79c1c6
1 changed files with 3 additions and 6 deletions
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9
drivers/infiniband/hw/mlx4/main.c
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@ -434,9 +434,6 @@ int mlx4_ib_gid_index_to_real_index(struct mlx4_ib_dev *ibdev,
return real_index;
}
#define field_avail(type, fld, sz) (offsetof(type, fld) + \
sizeof(((type *)0)->fld) <= (sz))
static int mlx4_ib_query_device(struct ib_device *ibdev,
struct ib_device_attr *props,
struct ib_udata *uhw)
@ -447,7 +444,7 @@ static int mlx4_ib_query_device(struct ib_device *ibdev,
int err;
int have_ib_ports;
struct mlx4_uverbs_ex_query_device cmd;
struct mlx4_uverbs_ex_query_device_resp resp = {.comp_mask = 0};
struct mlx4_uverbs_ex_query_device_resp resp = {};
struct mlx4_clock_params clock_params;
if (uhw->inlen) {
@ -602,7 +599,7 @@ static int mlx4_ib_query_device(struct ib_device *ibdev,
sizeof(struct mlx4_wqe_data_seg);
}
if (field_avail(typeof(resp), rss_caps, uhw->outlen)) {
if (offsetofend(typeof(resp), rss_caps) <= uhw->outlen) {
if (props->rss_caps.supported_qpts) {
resp.rss_caps.rx_hash_function =
MLX4_IB_RX_HASH_FUNC_TOEPLITZ;
@ -626,7 +623,7 @@ static int mlx4_ib_query_device(struct ib_device *ibdev,
sizeof(resp.rss_caps);
}
if (field_avail(typeof(resp), tso_caps, uhw->outlen)) {
if (offsetofend(typeof(resp), tso_caps) <= uhw->outlen) {
if (dev->dev->caps.max_gso_sz &&
((mlx4_ib_port_link_layer(ibdev, 1) ==
IB_LINK_LAYER_ETHERNET) ||