RDMA/mlx5: Check CAP_NET_RAW in user namespace for flow create

[ Upstream commit 95a89ec304c38f7447cdbf271f2d1cbad4c3bf81 ]

Currently, the capability check is done in the default
init_user_ns user namespace. When a process runs in a
non default user namespace, such check fails. Due to this
when a process is running using Podman, it fails to create
the flow.

Since the RDMA device is a resource within a network namespace,
use the network namespace associated with the RDMA device to
determine its owning user namespace.

Fixes: 322694412400 ("IB/mlx5: Introduce driver create and destroy flow methods")
Signed-off-by: Parav Pandit <parav@nvidia.com>
Link: https://patch.msgid.link/a4dcd5e3ac6904ef50b19e56942ca6ab0728794c.1750963874.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/infiniband/hw/mlx5/fs.c b/drivers/infiniband/hw/mlx5/fs.c
index 680627f1de3361f829d75edd859c2fe689404daf..de8114ba9c1f6bc98f9cf4b2a88419a1ebaae91c 100644 (file)
--- a/drivers/infiniband/hw/mlx5/fs.c
+++ b/drivers/infiniband/hw/mlx5/fs.c
@@ -2458,7 +2458,7 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
        struct mlx5_ib_dev *dev;
        u32 flags;
 
-       if (!capable(CAP_NET_RAW))
+       if (!rdma_uattrs_has_raw_cap(attrs))
                return -EPERM;
 
        fs_matcher = uverbs_attr_get_obj(attrs,