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| author | Jason Gunthorpe <jgg@nvidia.com> | 2026-03-03 22:50:01 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2026-03-08 13:20:25 +0300 |
| commit | dbf6491bb98d2821f0a23f4e8efd215cb2e5ff21 (patch) | |
| tree | 660876f9fc9d33a08204edb3f6d29b3ed6c4a16d /drivers | |
| parent | 1de9287ece44022bd694e669153fb7644804e10d (diff) | |
| download | linux-dbf6491bb98d2821f0a23f4e8efd215cb2e5ff21.tar.xz | |
RDMA: Add ib_copy_validate_udata_in_cm()
For structures with comp_mask also absorb the check of comp_mask valid
bits into the helper. This is slightly tricky because ~ might not fully
extend to 64 bits, the helper inserts an explicit type to ensure that ~
covers all bits.
Link: https://patch.msgid.link/r/4-v3-bd56dd443069+49-bnxt_re_uapi_jgg@nvidia.com
Tested-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
Acked-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/infiniband/core/uverbs_ioctl.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/infiniband/core/uverbs_ioctl.c b/drivers/infiniband/core/uverbs_ioctl.c index 81798c0875ed..5e5b00c6236f 100644 --- a/drivers/infiniband/core/uverbs_ioctl.c +++ b/drivers/infiniband/core/uverbs_ioctl.c @@ -898,3 +898,15 @@ int _ib_copy_validate_udata_in(struct ib_udata *udata, void *req, return 0; } EXPORT_SYMBOL(_ib_copy_validate_udata_in); + +int _ib_copy_validate_udata_cm_fail(struct ib_udata *udata, u64 req_cm, + u64 valid_cm) +{ + ibdev_dbg( + rdma_udata_to_dev(udata), + "System call driver input udata has unsupported comp_mask %llx & ~%llx = %llx for ioctl %ps called by %pSR\n", + req_cm, valid_cm, req_cm & ~valid_cm, + uverbs_get_handler_fn(udata), __builtin_return_address(0)); + return -EOPNOTSUPP; +} +EXPORT_SYMBOL(_ib_copy_validate_udata_cm_fail); |