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authorSabrina Dubroca <sd@queasysnail.net>2020-04-27 18:59:34 +0300
committerSteffen Klassert <steffen.klassert@secunet.com>2020-04-28 12:28:36 +0300
commit0146dca70b877b73c5fd9c67912b8a0ca8a7bac7 (patch)
treeb28c8271da42b8a5eddfc26a40dd93685cc0d24b /net/ipv4/udp.c
parente62905ae34eaf5fe2cfb254be5e0c097b3b1f798 (diff)
downloadlinux-0146dca70b877b73c5fd9c67912b8a0ca8a7bac7.tar.xz
xfrm: add support for UDPv6 encapsulation of ESP
This patch adds support for encapsulation of ESP over UDPv6. The code is very similar to the IPv4 encapsulation implementation, and allows to easily add espintcp on IPv6 as a follow-up. Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/ipv4/udp.c')
-rw-r--r--net/ipv4/udp.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 32564b350823..1b7ebbcae497 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -112,6 +112,9 @@
#include <net/sock_reuseport.h>
#include <net/addrconf.h>
#include <net/udp_tunnel.h>
+#if IS_ENABLED(CONFIG_IPV6)
+#include <net/ipv6_stubs.h>
+#endif
struct udp_table udp_table __read_mostly;
EXPORT_SYMBOL(udp_table);
@@ -2563,7 +2566,12 @@ int udp_lib_setsockopt(struct sock *sk, int level, int optname,
#ifdef CONFIG_XFRM
case UDP_ENCAP_ESPINUDP:
case UDP_ENCAP_ESPINUDP_NON_IKE:
- up->encap_rcv = xfrm4_udp_encap_rcv;
+#if IS_ENABLED(CONFIG_IPV6)
+ if (sk->sk_family == AF_INET6)
+ up->encap_rcv = ipv6_stub->xfrm6_udp_encap_rcv;
+ else
+#endif
+ up->encap_rcv = xfrm4_udp_encap_rcv;
#endif
fallthrough;
case UDP_ENCAP_L2TPINUDP: