diff options
Diffstat (limited to 'ANDROID_3.4.5/include/net/route.h')
| -rw-r--r-- | ANDROID_3.4.5/include/net/route.h | 324 |
1 files changed, 0 insertions, 324 deletions
diff --git a/ANDROID_3.4.5/include/net/route.h b/ANDROID_3.4.5/include/net/route.h deleted file mode 100644 index b1c0d5b5..00000000 --- a/ANDROID_3.4.5/include/net/route.h +++ /dev/null @@ -1,324 +0,0 @@ -/* - * INET An implementation of the TCP/IP protocol suite for the LINUX - * operating system. INET is implemented using the BSD Socket - * interface as the means of communication with the user level. - * - * Definitions for the IP router. - * - * Version: @(#)route.h 1.0.4 05/27/93 - * - * Authors: Ross Biro - * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> - * Fixes: - * Alan Cox : Reformatted. Added ip_rt_local() - * Alan Cox : Support for TCP parameters. - * Alexey Kuznetsov: Major changes for new routing code. - * Mike McLagan : Routing by source - * Robert Olsson : Added rt_cache statistics - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ -#ifndef _ROUTE_H -#define _ROUTE_H - -#include <net/dst.h> -#include <net/inetpeer.h> -#include <net/flow.h> -#include <net/inet_sock.h> -#include <linux/in_route.h> -#include <linux/rtnetlink.h> -#include <linux/route.h> -#include <linux/ip.h> -#include <linux/cache.h> -#include <linux/security.h> - -#define RTO_ONLINK 0x01 - -#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 rt_flags; - __u16 rt_type; - __u8 rt_key_tos; - - __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 */ -}; - -static inline bool rt_is_input_route(const struct rtable *rt) -{ - return rt->rt_route_iif != 0; -} - -static inline bool rt_is_output_route(const struct rtable *rt) -{ - return rt->rt_route_iif == 0; -} - -struct ip_rt_acct { - __u32 o_bytes; - __u32 o_packets; - __u32 i_bytes; - __u32 i_packets; -}; - -struct rt_cache_stat { - unsigned int in_hit; - unsigned int in_slow_tot; - unsigned int in_slow_mc; - unsigned int in_no_route; - unsigned int in_brd; - unsigned int in_martian_dst; - unsigned int in_martian_src; - unsigned int out_hit; - unsigned int out_slow_tot; - unsigned int out_slow_mc; - unsigned int gc_total; - unsigned int gc_ignored; - unsigned int gc_goal_miss; - unsigned int gc_dst_overflow; - unsigned int in_hlist_search; - unsigned int out_hlist_search; -}; - -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); -extern struct dst_entry *ipv4_blackhole_route(struct net *net, struct dst_entry *dst_orig); - -static inline struct rtable *ip_route_output_key(struct net *net, struct flowi4 *flp) -{ - return ip_route_output_flow(net, flp, NULL); -} - -static inline struct rtable *ip_route_output(struct net *net, __be32 daddr, - __be32 saddr, u8 tos, int oif) -{ - struct flowi4 fl4 = { - .flowi4_oif = oif, - .daddr = daddr, - .saddr = saddr, - .flowi4_tos = tos, - }; - return ip_route_output_key(net, &fl4); -} - -static inline struct rtable *ip_route_output_ports(struct net *net, struct flowi4 *fl4, - struct sock *sk, - __be32 daddr, __be32 saddr, - __be16 dport, __be16 sport, - __u8 proto, __u8 tos, int oif) -{ - flowi4_init_output(fl4, oif, sk ? sk->sk_mark : 0, tos, - RT_SCOPE_UNIVERSE, proto, - sk ? inet_sk_flowi_flags(sk) : 0, - daddr, saddr, dport, sport); - if (sk) - security_sk_classify_flow(sk, flowi4_to_flowi(fl4)); - return ip_route_output_flow(net, fl4, sk); -} - -static inline struct rtable *ip_route_output_gre(struct net *net, struct flowi4 *fl4, - __be32 daddr, __be32 saddr, - __be32 gre_key, __u8 tos, int oif) -{ - memset(fl4, 0, sizeof(*fl4)); - fl4->flowi4_oif = oif; - fl4->daddr = daddr; - fl4->saddr = saddr; - fl4->flowi4_tos = tos; - fl4->flowi4_proto = IPPROTO_GRE; - fl4->fl4_gre_key = gre_key; - 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); - -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); -} - -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); -} - -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 unsigned inet_addr_type(struct net *net, __be32 addr); -extern unsigned inet_dev_addr_type(struct net *net, const struct net_device *dev, __be32 addr); -extern void ip_rt_multicast_event(struct in_device *); -extern int ip_rt_ioctl(struct net *, unsigned int cmd, void __user *arg); -extern void ip_rt_get_source(u8 *src, struct sk_buff *skb, struct rtable *rt); -extern int ip_rt_dump(struct sk_buff *skb, struct netlink_callback *cb); - -struct in_ifaddr; -extern void fib_add_ifaddr(struct in_ifaddr *); -extern void fib_del_ifaddr(struct in_ifaddr *, struct in_ifaddr *); - -static inline void ip_rt_put(struct rtable * rt) -{ - if (rt) - dst_release(&rt->dst); -} - -#define IPTOS_RT_MASK (IPTOS_TOS_MASK & ~3) - -extern const __u8 ip_tos2prio[16]; - -static inline char rt_tos2priority(u8 tos) -{ - return ip_tos2prio[IPTOS_TOS(tos)>>1]; -} - -/* ip_route_connect() and ip_route_newports() work in tandem whilst - * binding a socket for a new outgoing connection. - * - * In order to use IPSEC properly, we must, in the end, have a - * route that was looked up using all available keys including source - * and destination ports. - * - * However, if a source port needs to be allocated (the user specified - * a wildcard source port) we need to obtain addressing information - * in order to perform that allocation. - * - * So ip_route_connect() looks up a route using wildcarded source and - * destination ports in the key, simply so that we can get a pair of - * addresses to use for port allocation. - * - * Later, once the ports are allocated, ip_route_newports() will make - * another route lookup if needed to make sure we catch any IPSEC - * rules keyed on the port information. - * - * The callers allocate the flow key on their stack, and must pass in - * the same flowi4 object to both the ip_route_connect() and the - * ip_route_newports() calls. - */ - -static inline void ip_route_connect_init(struct flowi4 *fl4, __be32 dst, __be32 src, - u32 tos, int oif, u8 protocol, - __be16 sport, __be16 dport, - struct sock *sk, bool can_sleep) -{ - __u8 flow_flags = 0; - - 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; - - flowi4_init_output(fl4, oif, sk->sk_mark, tos, RT_SCOPE_UNIVERSE, - protocol, flow_flags, dst, src, dport, sport); -} - -static inline struct rtable *ip_route_connect(struct flowi4 *fl4, - __be32 dst, __be32 src, u32 tos, - int oif, u8 protocol, - __be16 sport, __be16 dport, - struct sock *sk, bool can_sleep) -{ - struct net *net = sock_net(sk); - struct rtable *rt; - - ip_route_connect_init(fl4, dst, src, tos, oif, protocol, - sport, dport, sk, can_sleep); - - if (!dst || !src) { - rt = __ip_route_output_key(net, fl4); - if (IS_ERR(rt)) - return rt; - ip_rt_put(rt); - flowi4_update_output(fl4, oif, tos, fl4->daddr, fl4->saddr); - } - security_sk_classify_flow(sk, flowi4_to_flowi(fl4)); - return ip_route_output_flow(net, fl4, sk); -} - -static inline struct rtable *ip_route_newports(struct flowi4 *fl4, struct rtable *rt, - __be16 orig_sport, __be16 orig_dport, - __be16 sport, __be16 dport, - struct sock *sk) -{ - if (sport != orig_sport || dport != orig_dport) { - fl4->fl4_dport = dport; - fl4->fl4_sport = sport; - ip_rt_put(rt); - flowi4_update_output(fl4, sk->sk_bound_dev_if, - RT_CONN_FLAGS(sk), fl4->daddr, - fl4->saddr); - security_sk_classify_flow(sk, flowi4_to_flowi(fl4)); - return ip_route_output_flow(sock_net(sk), fl4, sk); - } - 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; -} - -extern int sysctl_ip_default_ttl; - -static inline int ip4_dst_hoplimit(const struct dst_entry *dst) -{ - int hoplimit = dst_metric_raw(dst, RTAX_HOPLIMIT); - - if (hoplimit == 0) - hoplimit = sysctl_ip_default_ttl; - return hoplimit; -} - -#endif /* _ROUTE_H */ |