mptcp: pm: netlink: deprecate server-side attribute

Now that such info is in the 'flags' attribute, it is time to deprecate
the dedicated 'server-side' attribute.

It will be removed in a few versions.

Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20250919-net-next-mptcp-server-side-flag-v1-3-a97a5d561a8b@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/Documentation/netlink/specs/mptcp_pm.yaml b/Documentation/netlink/specs/mptcp_pm.yaml
index fc47a2931014c0304efd3215cc24485ea22e1ede..ba30a40b9dbf2d2d4f25cc07b309ea560712f65e 100644 (file)
--- a/Documentation/netlink/specs/mptcp_pm.yaml
+++ b/Documentation/netlink/specs/mptcp_pm.yaml
@@ -266,6 +266,7 @@ attribute-sets:
       -
         name: server-side
         type: u8
+        doc: "Deprecated: use 'flags'"
 
 operations:
   list:

diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index aa0c73faaa6acad3fd66ea0942726ecd4d0abcc0..d5b383870f79956ce5e10bf384695621604f3ce9 100644 (file)
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -416,7 +416,7 @@ static int mptcp_event_created(struct sk_buff *skb,
        if (READ_ONCE(msk->pm.server_side)) {
                flags |= MPTCP_PM_EV_FLAG_SERVER_SIDE;
 
-               /* only set when it is the server side */
+               /* Deprecated, and only set when it is the server side */
                if (nla_put_u8(skb, MPTCP_ATTR_SERVER_SIDE, 1))
                        return -EMSGSIZE;
        }