diff options
Diffstat (limited to 'include/net/route.h')
| -rw-r--r-- | include/net/route.h | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/include/net/route.h b/include/net/route.h index d4a0147942f1..93833cfe9c96 100644 --- a/include/net/route.h +++ b/include/net/route.h @@ -35,8 +35,6 @@ #include <linux/cache.h> #include <linux/security.h> -#define RTO_ONLINK 0x01 - static inline __u8 ip_sock_rt_scope(const struct sock *sk) { if (sock_flag(sk, SOCK_LOCALROUTE)) @@ -77,6 +75,17 @@ struct rtable { rt_pmtu:31; }; +#define dst_rtable(_ptr) container_of_const(_ptr, struct rtable, dst) + +/** + * skb_rtable - Returns the skb &rtable + * @skb: buffer + */ +static inline struct rtable *skb_rtable(const struct sk_buff *skb) +{ + return dst_rtable(skb_dst(skb)); +} + static inline bool rt_is_input_route(const struct rtable *rt) { return rt->rt_is_input != 0; @@ -141,15 +150,22 @@ static inline struct rtable *ip_route_output_key(struct net *net, struct flowi4 return ip_route_output_flow(net, flp, NULL); } +/* Simplistic IPv4 route lookup function. + * This is only suitable for some particular use cases: since the flowi4 + * structure is only partially set, it may bypass some fib-rules. + */ static inline struct rtable *ip_route_output(struct net *net, __be32 daddr, - __be32 saddr, u8 tos, int oif) + __be32 saddr, u8 tos, int oif, + __u8 scope) { struct flowi4 fl4 = { .flowi4_oif = oif, .flowi4_tos = tos, + .flowi4_scope = scope, .daddr = daddr, .saddr = saddr, }; + return ip_route_output_key(net, &fl4); } |