diff mbox series

[mptcp-next,1/2] mptcp: reserve the MAX_ADDR_ID assignment

Message ID f53c88ba2f0661b7af4fac6e0b6f5b70a686a650.1612542562.git.geliangtang@gmail.com
State Superseded, archived
Delegated to: Mat Martineau
Headers show
Series Squash to "RM_ADDR: remove a list of addrs" | expand

Commit Message

Geliang Tang Feb. 5, 2021, 4:32 p.m. UTC 
Reserve the MAX_ADDR_ID assignment in the address IDs bitmap, leave it to
mark the end of valid IDs in the removing addresses array.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
---
 net/mptcp/pm_netlink.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index d4810c31bc4d..7b919c72a406 100644
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -1295,6 +1295,7 @@  static int mptcp_nl_cmd_flush_addrs(struct sk_buff *skb, struct genl_info *info)
 	__reset_counters(pernet);
 	pernet->next_id = 1;
 	bitmap_zero(pernet->id_bitmap, MAX_ADDR_ID + 1);
+	__set_bit(MAX_ADDR_ID, pernet->id_bitmap);
 	spin_unlock_bh(&pernet->lock);
 
 	mptcp_nl_remove_addrs_list(sock_net(skb->sk), &free_list);
@@ -1881,6 +1882,7 @@  static int __net_init pm_nl_init_net(struct net *net)
 	__reset_counters(pernet);
 	pernet->next_id = 1;
 	bitmap_zero(pernet->id_bitmap, MAX_ADDR_ID + 1);
+	__set_bit(MAX_ADDR_ID, pernet->id_bitmap);
 	spin_lock_init(&pernet->lock);
 	return 0;
 }