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IB/mlx5: Verify reserved fields are cleared

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Verify that reserved fields in struct mlx5_ib_resize_cq are cleared
before continuing execution of the verb. This is required to allow
making use of this area in future revisions.

Signed-off-by: Yann Droneaud <ydroneaud@opteya.com>
Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Eli Cohen 2014-01-15 14:56:44 +02:00 committed by Roland Dreier
parent 8c8a49148b
commit 57761d8df8
1 changed files with 6 additions and 2 deletions
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8
drivers/infiniband/hw/mlx5/cq.c
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@ -877,8 +877,12 @@ static int resize_user(struct mlx5_ib_dev *dev, struct mlx5_ib_cq *cq,
int npages;
struct ib_ucontext *context = cq->buf.umem->context;
if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd)))
return -EFAULT;
err = ib_copy_from_udata(&ucmd, udata, sizeof(ucmd));
if (err)
return err;
if (ucmd.reserved0 || ucmd.reserved1)
return -EINVAL;
umem = ib_umem_get(context, ucmd.buf_addr, entries * ucmd.cqe_size,
IB_ACCESS_LOCAL_WRITE, 1);