diff options
Diffstat (limited to 'ANDROID_3.4.5/include/net/inet_timewait_sock.h')
| -rw-r--r-- | ANDROID_3.4.5/include/net/inet_timewait_sock.h | 229 |
1 files changed, 0 insertions, 229 deletions
diff --git a/ANDROID_3.4.5/include/net/inet_timewait_sock.h b/ANDROID_3.4.5/include/net/inet_timewait_sock.h deleted file mode 100644 index ba52c830..00000000 --- a/ANDROID_3.4.5/include/net/inet_timewait_sock.h +++ /dev/null @@ -1,229 +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 a generic INET TIMEWAIT sock - * - * From code originally in net/tcp.h - * - * 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 _INET_TIMEWAIT_SOCK_ -#define _INET_TIMEWAIT_SOCK_ - - -#include <linux/kmemcheck.h> -#include <linux/list.h> -#include <linux/timer.h> -#include <linux/types.h> -#include <linux/workqueue.h> - -#include <net/inet_sock.h> -#include <net/sock.h> -#include <net/tcp_states.h> -#include <net/timewait_sock.h> - -#include <linux/atomic.h> - -struct inet_hashinfo; - -#define INET_TWDR_RECYCLE_SLOTS_LOG 5 -#define INET_TWDR_RECYCLE_SLOTS (1 << INET_TWDR_RECYCLE_SLOTS_LOG) - -/* - * If time > 4sec, it is "slow" path, no recycling is required, - * so that we select tick to get range about 4 seconds. - */ -#if HZ <= 16 || HZ > 4096 -# error Unsupported: HZ <= 16 or HZ > 4096 -#elif HZ <= 32 -# define INET_TWDR_RECYCLE_TICK (5 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG) -#elif HZ <= 64 -# define INET_TWDR_RECYCLE_TICK (6 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG) -#elif HZ <= 128 -# define INET_TWDR_RECYCLE_TICK (7 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG) -#elif HZ <= 256 -# define INET_TWDR_RECYCLE_TICK (8 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG) -#elif HZ <= 512 -# define INET_TWDR_RECYCLE_TICK (9 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG) -#elif HZ <= 1024 -# define INET_TWDR_RECYCLE_TICK (10 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG) -#elif HZ <= 2048 -# define INET_TWDR_RECYCLE_TICK (11 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG) -#else -# define INET_TWDR_RECYCLE_TICK (12 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG) -#endif - -/* TIME_WAIT reaping mechanism. */ -#define INET_TWDR_TWKILL_SLOTS 8 /* Please keep this a power of 2. */ - -#define INET_TWDR_TWKILL_QUOTA 100 - -struct inet_timewait_death_row { - /* Short-time timewait calendar */ - int twcal_hand; - unsigned long twcal_jiffie; - struct timer_list twcal_timer; - struct hlist_head twcal_row[INET_TWDR_RECYCLE_SLOTS]; - - spinlock_t death_lock; - int tw_count; - int period; - u32 thread_slots; - struct work_struct twkill_work; - struct timer_list tw_timer; - int slot; - struct hlist_head cells[INET_TWDR_TWKILL_SLOTS]; - struct inet_hashinfo *hashinfo; - int sysctl_tw_recycle; - int sysctl_max_tw_buckets; -}; - -extern void inet_twdr_hangman(unsigned long data); -extern void inet_twdr_twkill_work(struct work_struct *work); -extern void inet_twdr_twcal_tick(unsigned long data); - -struct inet_bind_bucket; - -/* - * This is a TIME_WAIT sock. It works around the memory consumption - * problems of sockets in such a state on heavily loaded servers, but - * without violating the protocol specification. - */ -struct inet_timewait_sock { - /* - * Now struct sock also uses sock_common, so please just - * don't add nothing before this first member (__tw_common) --acme - */ - struct sock_common __tw_common; -#define tw_family __tw_common.skc_family -#define tw_state __tw_common.skc_state -#define tw_reuse __tw_common.skc_reuse -#define tw_bound_dev_if __tw_common.skc_bound_dev_if -#define tw_node __tw_common.skc_nulls_node -#define tw_bind_node __tw_common.skc_bind_node -#define tw_refcnt __tw_common.skc_refcnt -#define tw_hash __tw_common.skc_hash -#define tw_prot __tw_common.skc_prot -#define tw_net __tw_common.skc_net -#define tw_daddr __tw_common.skc_daddr -#define tw_rcv_saddr __tw_common.skc_rcv_saddr - int tw_timeout; - volatile unsigned char tw_substate; - unsigned char tw_rcv_wscale; - - /* Socket demultiplex comparisons on incoming packets. */ - /* these three are in inet_sock */ - __be16 tw_sport; - __be16 tw_dport; - __u16 tw_num; - kmemcheck_bitfield_begin(flags); - /* And these are ours. */ - unsigned int tw_ipv6only : 1, - tw_transparent : 1, - tw_pad : 6, /* 6 bits hole */ - tw_tos : 8, - tw_ipv6_offset : 16; - kmemcheck_bitfield_end(flags); - unsigned long tw_ttd; - struct inet_bind_bucket *tw_tb; - struct hlist_node tw_death_node; -}; -#define tw_tclass tw_tos - -static inline void inet_twsk_add_node_rcu(struct inet_timewait_sock *tw, - struct hlist_nulls_head *list) -{ - hlist_nulls_add_head_rcu(&tw->tw_node, list); -} - -static inline void inet_twsk_add_bind_node(struct inet_timewait_sock *tw, - struct hlist_head *list) -{ - hlist_add_head(&tw->tw_bind_node, list); -} - -static inline int inet_twsk_dead_hashed(const struct inet_timewait_sock *tw) -{ - return !hlist_unhashed(&tw->tw_death_node); -} - -static inline void inet_twsk_dead_node_init(struct inet_timewait_sock *tw) -{ - tw->tw_death_node.pprev = NULL; -} - -static inline void __inet_twsk_del_dead_node(struct inet_timewait_sock *tw) -{ - __hlist_del(&tw->tw_death_node); - inet_twsk_dead_node_init(tw); -} - -static inline int inet_twsk_del_dead_node(struct inet_timewait_sock *tw) -{ - if (inet_twsk_dead_hashed(tw)) { - __inet_twsk_del_dead_node(tw); - return 1; - } - return 0; -} - -#define inet_twsk_for_each(tw, node, head) \ - hlist_nulls_for_each_entry(tw, node, head, tw_node) - -#define inet_twsk_for_each_inmate(tw, node, jail) \ - hlist_for_each_entry(tw, node, jail, tw_death_node) - -#define inet_twsk_for_each_inmate_safe(tw, node, safe, jail) \ - hlist_for_each_entry_safe(tw, node, safe, jail, tw_death_node) - -static inline struct inet_timewait_sock *inet_twsk(const struct sock *sk) -{ - return (struct inet_timewait_sock *)sk; -} - -static inline __be32 sk_rcv_saddr(const struct sock *sk) -{ -/* both inet_sk() and inet_twsk() store rcv_saddr in skc_rcv_saddr */ - return sk->__sk_common.skc_rcv_saddr; -} - -extern void inet_twsk_put(struct inet_timewait_sock *tw); - -extern int inet_twsk_unhash(struct inet_timewait_sock *tw); - -extern int inet_twsk_bind_unhash(struct inet_timewait_sock *tw, - struct inet_hashinfo *hashinfo); - -extern struct inet_timewait_sock *inet_twsk_alloc(const struct sock *sk, - const int state); - -extern void __inet_twsk_hashdance(struct inet_timewait_sock *tw, - struct sock *sk, - struct inet_hashinfo *hashinfo); - -extern void inet_twsk_schedule(struct inet_timewait_sock *tw, - struct inet_timewait_death_row *twdr, - const int timeo, const int timewait_len); -extern void inet_twsk_deschedule(struct inet_timewait_sock *tw, - struct inet_timewait_death_row *twdr); - -extern void inet_twsk_purge(struct inet_hashinfo *hashinfo, - struct inet_timewait_death_row *twdr, int family); - -static inline -struct net *twsk_net(const struct inet_timewait_sock *twsk) -{ - return read_pnet(&twsk->tw_net); -} - -static inline -void twsk_net_set(struct inet_timewait_sock *twsk, struct net *net) -{ - write_pnet(&twsk->tw_net, net); -} -#endif /* _INET_TIMEWAIT_SOCK_ */ |