ip_tunnels: add IPv6 addresses to ip_tunnel_key
Add the IPv6 addresses as an union with IPv4 ones. When using IPv4, the
newly introduced padding after the IPv4 addresses needs to be zeroed out.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/ip_tunnels.h b/include/net/ip_tunnels.h
index cc3b39e..6a51371 100644
--- a/include/net/ip_tunnels.h
+++ b/include/net/ip_tunnels.h
@@ -25,10 +25,24 @@
/* Used to memset ip_tunnel padding. */
#define IP_TUNNEL_KEY_SIZE offsetofend(struct ip_tunnel_key, tp_dst)
+/* Used to memset ipv4 address padding. */
+#define IP_TUNNEL_KEY_IPV4_PAD offsetofend(struct ip_tunnel_key, u.ipv4.dst)
+#define IP_TUNNEL_KEY_IPV4_PAD_LEN \
+ (FIELD_SIZEOF(struct ip_tunnel_key, u) - \
+ FIELD_SIZEOF(struct ip_tunnel_key, u.ipv4))
+
struct ip_tunnel_key {
__be64 tun_id;
- __be32 ipv4_src;
- __be32 ipv4_dst;
+ union {
+ struct {
+ __be32 src;
+ __be32 dst;
+ } ipv4;
+ struct {
+ struct in6_addr src;
+ struct in6_addr dst;
+ } ipv6;
+ } u;
__be16 tun_flags;
u8 ipv4_tos;
u8 ipv4_ttl;
@@ -177,8 +191,10 @@
const void *opts, u8 opts_len)
{
tun_info->key.tun_id = tun_id;
- tun_info->key.ipv4_src = saddr;
- tun_info->key.ipv4_dst = daddr;
+ tun_info->key.u.ipv4.src = saddr;
+ tun_info->key.u.ipv4.dst = daddr;
+ memset((unsigned char *)&tun_info->key + IP_TUNNEL_KEY_IPV4_PAD,
+ 0, IP_TUNNEL_KEY_IPV4_PAD_LEN);
tun_info->key.ipv4_tos = tos;
tun_info->key.ipv4_ttl = ttl;
tun_info->key.tun_flags = tun_flags;
