diff options
| author | Jason Gunthorpe <jgg@nvidia.com> | 2020-11-30 09:58:36 +0200 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2020-12-07 14:06:23 -0400 |
| commit | adac4cb3c1ff5c47c9f47be5d017a0e054176e3c (patch) | |
| tree | 45cefe975243d418e52288bd3604a120d6c48e05 | |
| parent | b9653b31d7767b7dccc8b24b660301be90449036 (diff) | |
| download | linux-adac4cb3c1ff5c47c9f47be5d017a0e054176e3c.tar.gz linux-adac4cb3c1ff5c47c9f47be5d017a0e054176e3c.tar.bz2 linux-adac4cb3c1ff5c47c9f47be5d017a0e054176e3c.zip | |
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>
| -rw-r--r-- | drivers/infiniband/core/uverbs_cmd.c | 19 | ||||
| -rw-r--r-- | drivers/infiniband/core/uverbs_std_types_mr.c | 2 | ||||
| -rw-r--r-- | drivers/infiniband/hw/mlx5/devx.c | 2 | ||||
| -rw-r--r-- | include/rdma/ib_verbs.h | 6 |
4 files changed, 12 insertions, 17 deletions
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c index 143a0e33fe52..817b25045acd 100644 --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -709,29 +709,20 @@ static int ib_uverbs_reg_mr(struct uverbs_attr_bundle *attrs) if ((cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK)) return -EINVAL; - ret = ib_check_mr_access(cmd.access_flags); - if (ret) - return ret; - uobj = uobj_alloc(UVERBS_OBJECT_MR, attrs, &ib_dev); if (IS_ERR(uobj)) return PTR_ERR(uobj); + ret = ib_check_mr_access(ib_dev, cmd.access_flags); + if (ret) + goto err_free; + pd = uobj_get_obj_read(pd, UVERBS_OBJECT_PD, cmd.pd_handle, attrs); if (!pd) { ret = -EINVAL; goto err_free; } - if (cmd.access_flags & IB_ACCESS_ON_DEMAND) { - if (!(pd->device->attrs.device_cap_flags & - IB_DEVICE_ON_DEMAND_PAGING)) { - pr_debug("ODP support not available\n"); - ret = -EINVAL; - goto err_put; - } - } - mr = pd->device->ops.reg_user_mr(pd, cmd.start, cmd.length, cmd.hca_va, cmd.access_flags, &attrs->driver_udata); @@ -805,7 +796,7 @@ static int ib_uverbs_rereg_mr(struct uverbs_attr_bundle *attrs) } if (cmd.flags & IB_MR_REREG_ACCESS) { - ret = ib_check_mr_access(cmd.access_flags); + ret = ib_check_mr_access(mr->device, cmd.access_flags); if (ret) goto put_uobjs; } diff --git a/drivers/infiniband/core/uverbs_std_types_mr.c b/drivers/infiniband/core/uverbs_std_types_mr.c index dc5856441729..dd4e76b26c74 100644 --- a/drivers/infiniband/core/uverbs_std_types_mr.c +++ b/drivers/infiniband/core/uverbs_std_types_mr.c @@ -115,7 +115,7 @@ static int UVERBS_HANDLER(UVERBS_METHOD_DM_MR_REG)( if (!(attr.access_flags & IB_ZERO_BASED)) return -EINVAL; - ret = ib_check_mr_access(attr.access_flags); + ret = ib_check_mr_access(ib_dev, attr.access_flags); if (ret) return ret; diff --git a/drivers/infiniband/hw/mlx5/devx.c b/drivers/infiniband/hw/mlx5/devx.c index ad0173f62c0e..819c142857d6 100644 --- a/drivers/infiniband/hw/mlx5/devx.c +++ b/drivers/infiniband/hw/mlx5/devx.c @@ -2068,7 +2068,7 @@ static int devx_umem_get(struct mlx5_ib_dev *dev, struct ib_ucontext *ucontext, if (err) return err; - err = ib_check_mr_access(access); + err = ib_check_mr_access(&dev->ib_dev, access); if (err) return err; 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; } |