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RDMA/efa: Use in-kernel offsetofend() to check field availability 

Remove custom and duplicated variant of offsetofend().

Link: https://lore.kernel.org/r/20200310091438.248429-4-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Acked-by: Gal Pressman <galpress@amazon.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Leon Romanovsky 2020-03-10 11:14:30 +02:00 committed by Jason Gunthorpe
parent 5ab17a24cb
commit fa8a44f6b2
1 changed files with 2 additions and 5 deletions
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7
drivers/infiniband/hw/efa/efa_verbs.c
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@ -144,9 +144,6 @@ static inline bool is_rdma_read_cap(struct efa_dev *dev)
return dev->dev_attr.device_caps & EFA_ADMIN_FEATURE_DEVICE_ATTR_DESC_RDMA_READ_MASK;
}
#define field_avail(x, fld, sz) (offsetof(typeof(x), fld) + \
sizeof_field(typeof(x), fld) <= (sz))
#define is_reserved_cleared(reserved) \
!memchr_inv(reserved, 0, sizeof(reserved))
@ -609,7 +606,7 @@ struct ib_qp *efa_create_qp(struct ib_pd *ibpd,
if (err)
goto err_out;
if (!field_avail(cmd, driver_qp_type, udata->inlen)) {
if (offsetofend(typeof(cmd), driver_qp_type) > udata->inlen) {
ibdev_dbg(&dev->ibdev,
"Incompatible ABI params, no input udata\n");
err = -EINVAL;
@ -896,7 +893,7 @@ int efa_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
goto err_out;
}
if (!field_avail(cmd, num_sub_cqs, udata->inlen)) {
if (offsetofend(typeof(cmd), num_sub_cqs) > udata->inlen) {
ibdev_dbg(ibdev,
"Incompatible ABI params, no input udata\n");
err = -EINVAL;