diff options
Diffstat (limited to 'include/net/route.h')
| -rw-r--r-- | include/net/route.h | 79 |
1 files changed, 34 insertions, 45 deletions
diff --git a/include/net/route.h b/include/net/route.h index 98705468ac0..8c52bc6f1c9 100644 --- a/include/net/route.h +++ b/include/net/route.h @@ -30,6 +30,7 @@ #include <net/inet_sock.h> #include <linux/in_route.h> #include <linux/rtnetlink.h> +#include <linux/rcupdate.h> #include <linux/route.h> #include <linux/ip.h> #include <linux/cache.h> @@ -40,45 +41,39 @@ #define RT_CONN_FLAGS(sk) (RT_TOS(inet_sk(sk)->tos) | sock_flag(sk, SOCK_LOCALROUTE)) struct fib_nh; -struct inet_peer; struct fib_info; struct rtable { struct dst_entry dst; - /* Lookup key. */ - __be32 rt_key_dst; - __be32 rt_key_src; - int rt_genid; unsigned int rt_flags; __u16 rt_type; - __u8 rt_key_tos; + __u16 rt_is_input; - __be32 rt_dst; /* Path destination */ - __be32 rt_src; /* Path source */ - int rt_route_iif; int rt_iif; - int rt_oif; - __u32 rt_mark; /* Info on neighbour */ __be32 rt_gateway; /* Miscellaneous cached information */ - __be32 rt_spec_dst; /* RFC1122 specific destination */ - u32 rt_peer_genid; - struct inet_peer *peer; /* long-living peer info */ - struct fib_info *fi; /* for client ref to shared metrics */ + u32 rt_pmtu; }; static inline bool rt_is_input_route(const struct rtable *rt) { - return rt->rt_route_iif != 0; + return rt->rt_is_input != 0; } static inline bool rt_is_output_route(const struct rtable *rt) { - return rt->rt_route_iif == 0; + return rt->rt_is_input == 0; +} + +static inline __be32 rt_nexthop(const struct rtable *rt, __be32 daddr) +{ + if (rt->rt_gateway) + return rt->rt_gateway; + return daddr; } struct ip_rt_acct { @@ -111,10 +106,7 @@ extern struct ip_rt_acct __percpu *ip_rt_acct; struct in_device; extern int ip_rt_init(void); -extern void ip_rt_redirect(__be32 old_gw, __be32 dst, __be32 new_gw, - __be32 src, struct net_device *dev); extern void rt_cache_flush(struct net *net, int how); -extern void rt_cache_flush_batch(struct net *net); extern struct rtable *__ip_route_output_key(struct net *, struct flowi4 *flp); extern struct rtable *ip_route_output_flow(struct net *, struct flowi4 *flp, struct sock *sk); @@ -166,24 +158,30 @@ static inline struct rtable *ip_route_output_gre(struct net *net, struct flowi4 return ip_route_output_key(net, fl4); } -extern int ip_route_input_common(struct sk_buff *skb, __be32 dst, __be32 src, - u8 tos, struct net_device *devin, bool noref); +extern int ip_route_input_noref(struct sk_buff *skb, __be32 dst, __be32 src, + u8 tos, struct net_device *devin); static inline int ip_route_input(struct sk_buff *skb, __be32 dst, __be32 src, u8 tos, struct net_device *devin) { - return ip_route_input_common(skb, dst, src, tos, devin, false); -} + int err; -static inline int ip_route_input_noref(struct sk_buff *skb, __be32 dst, __be32 src, - u8 tos, struct net_device *devin) -{ - return ip_route_input_common(skb, dst, src, tos, devin, true); + rcu_read_lock(); + err = ip_route_input_noref(skb, dst, src, tos, devin); + if (!err) + skb_dst_force(skb); + rcu_read_unlock(); + + return err; } -extern unsigned short ip_rt_frag_needed(struct net *net, const struct iphdr *iph, - unsigned short new_mtu, struct net_device *dev); -extern void ip_rt_send_redirect(struct sk_buff *skb); +extern void ipv4_update_pmtu(struct sk_buff *skb, struct net *net, u32 mtu, + int oif, u32 mark, u8 protocol, int flow_flags); +extern void ipv4_sk_update_pmtu(struct sk_buff *skb, struct sock *sk, u32 mtu); +extern void ipv4_redirect(struct sk_buff *skb, struct net *net, + int oif, u32 mark, u8 protocol, int flow_flags); +extern void ipv4_sk_redirect(struct sk_buff *skb, struct sock *sk); +extern void ip_rt_send_redirect(struct sk_buff *skb); extern unsigned int inet_addr_type(struct net *net, __be32 addr); extern unsigned int inet_dev_addr_type(struct net *net, const struct net_device *dev, __be32 addr); @@ -244,8 +242,6 @@ static inline void ip_route_connect_init(struct flowi4 *fl4, __be32 dst, __be32 if (inet_sk(sk)->transparent) flow_flags |= FLOWI_FLAG_ANYSRC; - if (protocol == IPPROTO_TCP) - flow_flags |= FLOWI_FLAG_PRECOW_METRICS; if (can_sleep) flow_flags |= FLOWI_FLAG_CAN_SLEEP; @@ -294,20 +290,13 @@ static inline struct rtable *ip_route_newports(struct flowi4 *fl4, struct rtable return rt; } -extern void rt_bind_peer(struct rtable *rt, __be32 daddr, int create); - -static inline struct inet_peer *rt_get_peer(struct rtable *rt, __be32 daddr) -{ - if (rt->peer) - return rt->peer; - - rt_bind_peer(rt, daddr, 0); - return rt->peer; -} - static inline int inet_iif(const struct sk_buff *skb) { - return skb_rtable(skb)->rt_iif; + int iif = skb_rtable(skb)->rt_iif; + + if (iif) + return iif; + return skb->skb_iif; } extern int sysctl_ip_default_ttl; |