netdev - [PATCH rdma-next v4 3/8] RDMA/nldev: Add dellink function pointer

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Date:   Sun, 23 Apr 2023 22:48:17 +0800
From:   Zhu Yanjun <yanjun.zhu@...el.com>
To:     jgg@...pe.ca, leon@...nel.org, zyjzyj2000@...il.com,
        linux-rdma@...r.kernel.org, parav@...dia.com,
        netdev@...r.kernel.org, rain.1986.08.12@...il.com
Cc:     Zhu Yanjun <yanjun.zhu@...ux.dev>
Subject: [PATCH rdma-next v4 3/8] RDMA/nldev: Add dellink function pointer

From: Zhu Yanjun <yanjun.zhu@...ux.dev>

The newlink function pointer is added. And the sock listening on port 4791
is added in the newlink function. So the dellink function is needed to
remove the sock.

Tested-by: Rain River <rain.1986.08.12@...il.com>
Signed-off-by: Zhu Yanjun <yanjun.zhu@...ux.dev>
---
 drivers/infiniband/core/nldev.c | 6 ++++++
 include/rdma/rdma_netlink.h     | 2 ++
 2 files changed, 8 insertions(+)

diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c
index d5d3e4f0de77..97a62685ed5b 100644
--- a/drivers/infiniband/core/nldev.c
+++ b/drivers/infiniband/core/nldev.c
@@ -1758,6 +1758,12 @@ static int nldev_dellink(struct sk_buff *skb, struct nlmsghdr *nlh,
 		return -EINVAL;
 	}
 
+	if (device->link_ops) {
+		err = device->link_ops->dellink(device);
+		if (err)
+			return err;
+	}
+
 	ib_unregister_device_and_put(device);
 	return 0;
 }
diff --git a/include/rdma/rdma_netlink.h b/include/rdma/rdma_netlink.h
index c2a79aeee113..bf9df004061f 100644
--- a/include/rdma/rdma_netlink.h
+++ b/include/rdma/rdma_netlink.h
@@ -5,6 +5,7 @@
 
 #include <linux/netlink.h>
 #include <uapi/rdma/rdma_netlink.h>
+#include <rdma/ib_verbs.h>
 
 enum {
 	RDMA_NLDEV_ATTR_EMPTY_STRING = 1,
@@ -114,6 +115,7 @@ struct rdma_link_ops {
 	struct list_head list;
 	const char *type;
 	int (*newlink)(const char *ibdev_name, struct net_device *ndev);
+	int (*dellink)(struct ib_device *dev);
 };
 
 void rdma_link_register(struct rdma_link_ops *ops);
-- 
2.27.0