diff options
Diffstat (limited to 'ANDROID_3.4.5/include/net/inetpeer.h')
-rw-r--r-- | ANDROID_3.4.5/include/net/inetpeer.h | 129 |
1 files changed, 0 insertions, 129 deletions
diff --git a/ANDROID_3.4.5/include/net/inetpeer.h b/ANDROID_3.4.5/include/net/inetpeer.h deleted file mode 100644 index 2040bff9..00000000 --- a/ANDROID_3.4.5/include/net/inetpeer.h +++ /dev/null @@ -1,129 +0,0 @@ -/* - * INETPEER - A storage for permanent information about peers - * - * Authors: Andrey V. Savochkin <saw@msu.ru> - */ - -#ifndef _NET_INETPEER_H -#define _NET_INETPEER_H - -#include <linux/types.h> -#include <linux/init.h> -#include <linux/jiffies.h> -#include <linux/spinlock.h> -#include <linux/rtnetlink.h> -#include <net/ipv6.h> -#include <linux/atomic.h> - -struct inetpeer_addr_base { - union { - __be32 a4; - __be32 a6[4]; - }; -}; - -struct inetpeer_addr { - struct inetpeer_addr_base addr; - __u16 family; -}; - -struct inet_peer { - /* group together avl_left,avl_right,v4daddr to speedup lookups */ - struct inet_peer __rcu *avl_left, *avl_right; - struct inetpeer_addr daddr; - __u32 avl_height; - - u32 metrics[RTAX_MAX]; - u32 rate_tokens; /* rate limiting for ICMP */ - unsigned long rate_last; - unsigned long pmtu_expires; - u32 pmtu_orig; - u32 pmtu_learned; - struct inetpeer_addr_base redirect_learned; - union { - struct list_head gc_list; - struct rcu_head gc_rcu; - }; - /* - * Once inet_peer is queued for deletion (refcnt == -1), following fields - * are not available: rid, ip_id_count, tcp_ts, tcp_ts_stamp - * We can share memory with rcu_head to help keep inet_peer small. - */ - union { - struct { - atomic_t rid; /* Frag reception counter */ - atomic_t ip_id_count; /* IP ID for the next packet */ - __u32 tcp_ts; - __u32 tcp_ts_stamp; - }; - struct rcu_head rcu; - struct inet_peer *gc_next; - }; - - /* following fields might be frequently dirtied */ - __u32 dtime; /* the time of last use of not referenced entries */ - atomic_t refcnt; -}; - -void inet_initpeers(void) __init; - -#define INETPEER_METRICS_NEW (~(u32) 0) - -static inline bool inet_metrics_new(const struct inet_peer *p) -{ - return p->metrics[RTAX_LOCK-1] == INETPEER_METRICS_NEW; -} - -/* can be called with or without local BH being disabled */ -struct inet_peer *inet_getpeer(const struct inetpeer_addr *daddr, int create); - -static inline struct inet_peer *inet_getpeer_v4(__be32 v4daddr, int create) -{ - struct inetpeer_addr daddr; - - daddr.addr.a4 = v4daddr; - daddr.family = AF_INET; - return inet_getpeer(&daddr, create); -} - -static inline struct inet_peer *inet_getpeer_v6(const struct in6_addr *v6daddr, int create) -{ - struct inetpeer_addr daddr; - - *(struct in6_addr *)daddr.addr.a6 = *v6daddr; - daddr.family = AF_INET6; - return inet_getpeer(&daddr, create); -} - -/* can be called from BH context or outside */ -extern void inet_putpeer(struct inet_peer *p); -extern bool inet_peer_xrlim_allow(struct inet_peer *peer, int timeout); - -extern void inetpeer_invalidate_tree(int family); - -/* - * temporary check to make sure we dont access rid, ip_id_count, tcp_ts, - * tcp_ts_stamp if no refcount is taken on inet_peer - */ -static inline void inet_peer_refcheck(const struct inet_peer *p) -{ - WARN_ON_ONCE(atomic_read(&p->refcnt) <= 0); -} - - -/* can be called with or without local BH being disabled */ -static inline int inet_getid(struct inet_peer *p, int more) -{ - int old, new; - more++; - inet_peer_refcheck(p); - do { - old = atomic_read(&p->ip_id_count); - new = old + more; - if (!new) - new = 1; - } while (atomic_cmpxchg(&p->ip_id_count, old, new) != old); - return new; -} - -#endif /* _NET_INETPEER_H */ |