linux-kernel - [PATCH net-next] net/netlink: Add getsockopt support for NETLINK_LISTEN_ALL

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Date: Fri,  8 Mar 2024 11:33:04 +0000
From: Juntong Deng <juntong.deng@...look.com>
To: davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	horms@...nel.org,
	Liam.Howlett@...cle.com
Cc: netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH net-next] net/netlink: Add getsockopt support for NETLINK_LISTEN_ALL_NSID

Currently getsockopt does not support NETLINK_LISTEN_ALL_NSID,
and we are unable to get the value of NETLINK_LISTEN_ALL_NSID
socket option through getsockopt.

This patch adds getsockopt support for NETLINK_LISTEN_ALL_NSID.

Signed-off-by: Juntong Deng <juntong.deng@...look.com>
---
 net/netlink/af_netlink.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index da846212fb9b..7554803218a2 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1773,6 +1773,9 @@ static int netlink_getsockopt(struct socket *sock, int level, int optname,
 		netlink_unlock_table();
 		return err;
 	}
+	case NETLINK_LISTEN_ALL_NSID:
+		flag = NETLINK_F_LISTEN_ALL_NSID;
+		break;
 	case NETLINK_CAP_ACK:
 		flag = NETLINK_F_CAP_ACK;
 		break;
-- 
2.39.2