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RDMA/ipoib: Use parent rdma device net namespace

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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 <parav@nvidia.com>
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
This commit is contained in:
Mark Bloch
2025-06-17 11:44:03 +03:00
committed by Leon Romanovsky
parent 611d08207d
commit f1208b0557
2 changed files with 7 additions and 0 deletions
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2
drivers/infiniband/ulp/ipoib/ipoib_main.c
View File

@@ -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",

5
include/rdma/ib_verbs.h
View File

@@ -4871,6 +4871,11 @@ 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)