From: Zhu Yanjun <yanjun.zhu@linux.dev>
Date: Fri, 13 Mar 2026 02:30:55 +0000 (-0700)
Subject: RDMA/nldev: Add dellink function pointer
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a60e3f3d6fbab9dc45c653e5046307e0e7fcde98;p=thirdparty%2Flinux.git

RDMA/nldev: Add dellink function pointer

Add a dellink function pointer to rdma_link_ops to
allow drivers to clean up resources created during
newlink.

Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Link: https://patch.msgid.link/20260313023058.13020-2-yanjun.zhu@linux.dev
Signed-off-by: Leon Romanovsky <leon@kernel.org>
---

diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c
index cb18699633e8..96c745d5bac4 100644
--- a/drivers/infiniband/core/nldev.c
+++ b/drivers/infiniband/core/nldev.c
@@ -1839,6 +1839,18 @@ static int nldev_dellink(struct sk_buff *skb, struct nlmsghdr *nlh,
 		return -EINVAL;
 	}
 
+	/*
+	 * This path is triggered by the 'rdma link delete' administrative command.
+	 * For Soft-RoCE (RXE), we ensure that transport sockets are closed here.
+	 * Note: iWARP driver does not implement .dellink, so this logic is
+	 * implicitly scoped to the driver supporting dynamic link deletion like RXE.
+	 */
+	if (device->link_ops && device->link_ops->dellink) {
+		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 326deaf56d5d..2fd1358ea57d 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>
 
 struct ib_device;
 
@@ -126,6 +127,7 @@ 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);