diff options
Diffstat (limited to 'include/net/udp_tunnel.h')
| -rw-r--r-- | include/net/udp_tunnel.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/include/net/udp_tunnel.h b/include/net/udp_tunnel.h index 9acef2fbd2fd..d9c6d04bb3b5 100644 --- a/include/net/udp_tunnel.h +++ b/include/net/udp_tunnel.h @@ -10,6 +10,11 @@ #include <net/ipv6_stubs.h> #endif +#define UDP_TUNNEL_PARTIAL_FEATURES NETIF_F_GSO_ENCAP_ALL +#define UDP_TUNNEL_STRIPPED_GSO_TYPES ((UDP_TUNNEL_PARTIAL_FEATURES | \ + NETIF_F_GSO_PARTIAL) >> \ + NETIF_F_GSO_SHIFT) + struct udp_port_cfg { u8 family; @@ -145,6 +150,33 @@ void udp_tunnel6_xmit_skb(struct dst_entry *dst, struct sock *sk, __be16 src_port, __be16 dst_port, bool nocheck, u16 ip6cb_flags); +static inline bool udp_tunnel_handle_partial(struct sk_buff *skb) +{ + bool double_encap = !!(skb_shinfo(skb)->gso_type & SKB_GSO_PARTIAL); + + /* + * If the skb went through partial segmentation, lower devices + * will not need to offload the related features - except for + * UDP_TUNNEL, that will be re-added by the later + * udp_tunnel_handle_offloads(). + */ + if (double_encap) + skb_shinfo(skb)->gso_type &= ~UDP_TUNNEL_STRIPPED_GSO_TYPES; + return double_encap; +} + +static inline void udp_tunnel_set_inner_protocol(struct sk_buff *skb, + bool double_encap, + __be16 inner_proto) +{ + /* + * The inner protocol has been set by the nested tunnel, don't + * overraid it. + */ + if (!double_encap) + skb_set_inner_protocol(skb, inner_proto); +} + void udp_tunnel_sock_release(struct socket *sock); struct rtable *udp_tunnel_dst_lookup(struct sk_buff *skb, |