From: Mark Bloch Date: Tue, 17 Jun 2025 08:44:03 +0000 (+0300) Subject: RDMA/ipoib: Use parent rdma device net namespace X-Git-Tag: v6.16.1~284 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=cd024be70b4ba049c629882de20cb59aaf7410b9;p=thirdparty%2Fkernel%2Fstable.git RDMA/ipoib: Use parent rdma device net namespace [ Upstream commit f1208b05574f63c52e88109d8c75afdf4fc6bf42 ] Use the net namespace of the underlying rdma device. After honoring the rdma device's namespace, the ipoib netdev now also runs in the same net namespace of the rdma device. Add an API to read the net namespace of the rdma device so that ULP such as IPoIB can use it to initialize its netdev. Signed-off-by: Parav Pandit Signed-off-by: Mark Bloch Signed-off-by: Leon Romanovsky Stable-dep-of: f458ccd2aa2c ("RDMA/uverbs: Check CAP_NET_RAW in user namespace for flow create") Signed-off-by: Sasha Levin --- diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c index f2f5465f2a900..7acafc5c0e09a 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_main.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c @@ -2577,6 +2577,8 @@ static struct net_device *ipoib_add_port(const char *format, ndev->rtnl_link_ops = ipoib_get_link_ops(); + dev_net_set(ndev, rdma_dev_net(hca)); + result = register_netdev(ndev); if (result) { pr_warn("%s: couldn't register ipoib port %d; error %d\n", diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index af43a8d2a74ae..c83e5a375cd6c 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -4855,6 +4855,11 @@ static inline int ibdev_to_node(struct ib_device *ibdev) bool rdma_dev_access_netns(const struct ib_device *device, const struct net *net); +static inline struct net *rdma_dev_net(struct ib_device *device) +{ + return read_pnet(&device->coredev.rdma_net); +} + #define IB_ROCE_UDP_ENCAP_VALID_PORT_MIN (0xC000) #define IB_ROCE_UDP_ENCAP_VALID_PORT_MAX (0xFFFF) #define IB_GRH_FLOWLABEL_MASK (0x000FFFFF)