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RDMA/core: Add ib_query_netdev_port() to query netdev port by IB device.

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Query the port number of a netdev associated with an ibdev.

Signed-off-by: Yuyu Li <liyuyu6@huawei.com>
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Yuyu Li
2024-12-24 05:21:45 -05:00
committed by Leon Romanovsky
parent 2028c29587
commit 0c039a57b6
2 changed files with 34 additions and 7 deletions
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drivers/infiniband/core/device.c
+32 -7
View File
@@ -2278,6 +2278,33 @@ struct net_device *ib_device_get_netdev(struct ib_device *ib_dev,
}
EXPORT_SYMBOL(ib_device_get_netdev);
/**
* ib_query_netdev_port - Query the port number of a net_device
* associated with an ibdev
* @ibdev: IB device
* @ndev: Network device
* @port: IB port the net_device is connected to
*/
int ib_query_netdev_port(struct ib_device *ibdev, struct net_device *ndev,
u32 *port)
{
struct net_device *ib_ndev;
u32 port_num;
rdma_for_each_port(ibdev, port_num) {
ib_ndev = ib_device_get_netdev(ibdev, port_num);
if (ndev == ib_ndev) {
*port = port_num;
dev_put(ib_ndev);
return 0;
}
dev_put(ib_ndev);
}
return -ENOENT;
}
EXPORT_SYMBOL(ib_query_netdev_port);
/**
* ib_device_get_by_netdev - Find an IB device associated with a netdev
* @ndev: netdev to locate
@@ -2841,7 +2868,6 @@ static int ib_netdevice_event(struct notifier_block *this,
unsigned long event, void *ptr)
{
struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
struct net_device *ib_ndev;
struct ib_device *ibdev;
u32 port;
@@ -2851,13 +2877,12 @@ static int ib_netdevice_event(struct notifier_block *this,
if (!ibdev)
return NOTIFY_DONE;
rdma_for_each_port(ibdev, port) {
ib_ndev = ib_device_get_netdev(ibdev, port);
if (ndev == ib_ndev)
rdma_nl_notify_event(ibdev, port,
RDMA_NETDEV_RENAME_EVENT);
dev_put(ib_ndev);
if (ib_query_netdev_port(ibdev, ndev, &port)) {
ib_device_put(ibdev);
break;
}
rdma_nl_notify_event(ibdev, port, RDMA_NETDEV_RENAME_EVENT);
ib_device_put(ibdev);
break;
default:
include/rdma/ib_verbs.h
+2
View File
@@ -4468,6 +4468,8 @@ int ib_device_set_netdev(struct ib_device *ib_dev, struct net_device *ndev,
unsigned int port);
struct net_device *ib_device_get_netdev(struct ib_device *ib_dev,
u32 port);
int ib_query_netdev_port(struct ib_device *ibdev, struct net_device *ndev,
u32 *port);
struct ib_wq *ib_create_wq(struct ib_pd *pd,
struct ib_wq_init_attr *init_attr);
int ib_destroy_wq_user(struct ib_wq *wq, struct ib_udata *udata);