diff options
Diffstat (limited to 'include/net/xfrm.h')
| -rw-r--r-- | include/net/xfrm.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/include/net/xfrm.h b/include/net/xfrm.h index bed7d43932f..b56b6a10fe5 100644 --- a/include/net/xfrm.h +++ b/include/net/xfrm.h @@ -205,6 +205,7 @@ struct xfrm_state * transformer. */ const struct xfrm_type *type; struct xfrm_mode *inner_mode; + struct xfrm_mode *inner_mode_iaf; struct xfrm_mode *outer_mode; /* Security context */ @@ -388,6 +389,27 @@ enum { extern int xfrm_register_mode(struct xfrm_mode *mode, int family); extern int xfrm_unregister_mode(struct xfrm_mode *mode, int family); +static inline int xfrm_af2proto(unsigned int family) +{ + switch(family) { + case AF_INET: + return IPPROTO_IPIP; + case AF_INET6: + return IPPROTO_IPV6; + default: + return 0; + } +} + +static inline struct xfrm_mode *xfrm_ip2inner_mode(struct xfrm_state *x, int ipproto) +{ + if ((ipproto == IPPROTO_IPIP && x->props.family == AF_INET) || + (ipproto == IPPROTO_IPV6 && x->props.family == AF_INET6)) + return x->inner_mode; + else + return x->inner_mode_iaf; +} + struct xfrm_tmpl { /* id in template is interpreted as: @@ -532,6 +554,9 @@ struct xfrm_mode_skb_cb { __be16 id; __be16 frag_off; + /* IP header length (excluding options or extension headers). */ + u8 ihl; + /* TOS for IPv4, class for IPv6. */ u8 tos; @@ -541,6 +566,9 @@ struct xfrm_mode_skb_cb { /* Protocol for IPv4, NH for IPv6. */ u8 protocol; + /* Option length for IPv4, zero for IPv6. */ + u8 optlen; + /* Used by IPv6 only, zero for IPv4. */ u8 flow_lbl[3]; }; @@ -1300,6 +1328,7 @@ extern int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, extern int xfrm_input_resume(struct sk_buff *skb, int nexthdr); extern int xfrm_output_resume(struct sk_buff *skb, int err); extern int xfrm_output(struct sk_buff *skb); +extern int xfrm_inner_extract_output(struct xfrm_state *x, struct sk_buff *skb); extern int xfrm4_extract_header(struct sk_buff *skb); extern int xfrm4_extract_input(struct xfrm_state *x, struct sk_buff *skb); extern int xfrm4_rcv_encap(struct sk_buff *skb, int nexthdr, __be32 spi, |