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authorJason Gunthorpe <jgg@nvidia.com>2020-11-30 10:58:36 +0300
committerJason Gunthorpe <jgg@nvidia.com>2020-12-07 21:06:23 +0300
commitadac4cb3c1ff5c47c9f47be5d017a0e054176e3c (patch)
tree45cefe975243d418e52288bd3604a120d6c48e05 /include/rdma/ib_verbs.h
parentb9653b31d7767b7dccc8b24b660301be90449036 (diff)
downloadlinux-adac4cb3c1ff5c47c9f47be5d017a0e054176e3c.tar.xz
RDMA/uverbs: Check ODP in ib_check_mr_access() as well
No reason only one caller checks this. This properly blocks ODP from the rereg flow if the device does not support ODP. Link: https://lore.kernel.org/r/20201130075839.278575-3-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'include/rdma/ib_verbs.h')
-rw-r--r--include/rdma/ib_verbs.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 7bee8abae35c..4fcbc6d3d0e0 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -4183,7 +4183,8 @@ struct ib_xrcd *ib_alloc_xrcd_user(struct ib_device *device,
struct inode *inode, struct ib_udata *udata);
int ib_dealloc_xrcd_user(struct ib_xrcd *xrcd, struct ib_udata *udata);
-static inline int ib_check_mr_access(int flags)
+static inline int ib_check_mr_access(struct ib_device *ib_dev,
+ unsigned int flags)
{
/*
* Local write permission is required if remote write or
@@ -4196,6 +4197,9 @@ static inline int ib_check_mr_access(int flags)
if (flags & ~IB_ACCESS_SUPPORTED)
return -EINVAL;
+ if (flags & IB_ACCESS_ON_DEMAND &&
+ !(ib_dev->attrs.device_cap_flags & IB_DEVICE_ON_DEMAND_PAGING))
+ return -EINVAL;
return 0;
}