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[Openvpn-devel,ovpn,net-next,3/5] ovpn: use bound address in UDP when available

Message ID 20260512144358.419599-3-a@unstable.cc
State New
Headers show
Series [Openvpn-devel,ovpn,net-next,1/5] ovpn: use bound device in UDP when available | expand

Commit Message

Antonio Quartulli May 12, 2026, 2:43 p.m. UTC 
From: Ralf Lici <ralf@mandelbit.com>

Use the socket's locally bound address if it's explicitly specified via
the --local option in openvpn.

Signed-off-by: Ralf Lici <ralf@mandelbit.com>
Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
---
 drivers/net/ovpn/udp.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ovpn/udp.c b/drivers/net/ovpn/udp.c
index 78b9aea06de9..b5d1ca014732 100644
--- a/drivers/net/ovpn/udp.c
+++ b/drivers/net/ovpn/udp.c
@@ -147,7 +147,7 @@  static int ovpn_udp4_output(struct ovpn_peer *peer, struct ovpn_bind *bind,
 {
 	struct rtable *rt;
 	struct flowi4 fl = {
-		.saddr = bind->local.ipv4.s_addr,
+		.saddr = inet_sk(sk)->inet_rcv_saddr ?: bind->local.ipv4.s_addr,
 		.daddr = bind->remote.in4.sin_addr.s_addr,
 		.fl4_sport = inet_sk(sk)->inet_sport,
 		.fl4_dport = bind->remote.in4.sin_port,
@@ -225,7 +225,9 @@  static int ovpn_udp6_output(struct ovpn_peer *peer, struct ovpn_bind *bind,
 	int ret;
 
 	struct flowi6 fl = {
-		.saddr = bind->local.ipv6,
+		.saddr = ipv6_addr_any(&sk->sk_v6_rcv_saddr) ?
+				 bind->local.ipv6 :
+				 sk->sk_v6_rcv_saddr,
 		.daddr = bind->remote.in6.sin6_addr,
 		.fl6_sport = inet_sk(sk)->inet_sport,
 		.fl6_dport = bind->remote.in6.sin6_port,