mptcp: add validity check for sending RM_ADDR

This patch adds the validity check for sending RM_ADDRs for userspace PM in mptcp_pm_remove_addrs(), only send a RM_ADDR when the address is in the anno_list or conn_list. Fixes: 8b1c94d ("mptcp: only send RM_ADDR in nl_cmd_remove") Signed-off-by: Geliang Tang <[email protected]> Reviewed-by: Mat Martineau <[email protected]> Message-Id: <02d38d6b7a98765bf516c90541d4f2a911f428ce.1699014584.git.geliang.tang@suse.com>
multipath-tcp · Nov 7, 2023 · f51f98f · f51f98f
1 parent bbb2b19
commit f51f98f
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
@@ -1515,8 +1515,9 @@ void mptcp_pm_remove_addrs(struct mptcp_sock *msk, struct list_head *rm_list)
 	struct mptcp_pm_addr_entry *entry;
 
 	list_for_each_entry(entry, rm_list, list) {
-		remove_anno_list_by_saddr(msk, &entry->addr);
-		if (alist.nr < MPTCP_RM_IDS_MAX)
+		if ((remove_anno_list_by_saddr(msk, &entry->addr) ||
+		     lookup_subflow_by_saddr(&msk->conn_list, &entry->addr)) &&
+		    alist.nr < MPTCP_RM_IDS_MAX)
 			alist.ids[alist.nr++] = entry->addr.id;
 	}