18feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo/* 28feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo * INET An implementation of the TCP/IP protocol suite for the LINUX 38feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo * operating system. INET is implemented using the BSD Socket 48feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo * interface as the means of communication with the user level. 58feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo * 68feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo * Definitions for a generic INET TIMEWAIT sock 78feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo * 88feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo * From code originally in net/tcp.h 98feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo * 108feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo * This program is free software; you can redistribute it and/or 118feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo * modify it under the terms of the GNU General Public License 128feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo * as published by the Free Software Foundation; either version 138feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo * 2 of the License, or (at your option) any later version. 148feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo */ 158feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo#ifndef _INET_TIMEWAIT_SOCK_ 168feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo#define _INET_TIMEWAIT_SOCK_ 178feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo 188feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo 199e337b0fb3baa3c22490365b1bdee6f4741413d4Vegard Nossum#include <linux/kmemcheck.h> 208feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo#include <linux/list.h> 21295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo#include <linux/timer.h> 228feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo#include <linux/types.h> 23295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo#include <linux/workqueue.h> 248feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo 2514c850212ed8f8cbb5972ad6b8812e08a0bc901cArnaldo Carvalho de Melo#include <net/inet_sock.h> 268feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo#include <net/sock.h> 278feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo#include <net/tcp_states.h> 286d6ee43e0b8b8d4847627fd43739b98ec2b9404fArnaldo Carvalho de Melo#include <net/timewait_sock.h> 298feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo 3060063497a95e716c9a689af3be2687d261f115b4Arun Sharma#include <linux/atomic.h> 318feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo 32295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melostruct inet_hashinfo; 33295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo 34295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo#define INET_TWDR_RECYCLE_SLOTS_LOG 5 35295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo#define INET_TWDR_RECYCLE_SLOTS (1 << INET_TWDR_RECYCLE_SLOTS_LOG) 36295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo 37295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo/* 38295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo * If time > 4sec, it is "slow" path, no recycling is required, 39295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo * so that we select tick to get range about 4 seconds. 40295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo */ 41295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo#if HZ <= 16 || HZ > 4096 42295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo# error Unsupported: HZ <= 16 or HZ > 4096 43295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo#elif HZ <= 32 44295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo# define INET_TWDR_RECYCLE_TICK (5 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG) 45295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo#elif HZ <= 64 46295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo# define INET_TWDR_RECYCLE_TICK (6 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG) 47295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo#elif HZ <= 128 48295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo# define INET_TWDR_RECYCLE_TICK (7 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG) 49295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo#elif HZ <= 256 50295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo# define INET_TWDR_RECYCLE_TICK (8 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG) 51295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo#elif HZ <= 512 52295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo# define INET_TWDR_RECYCLE_TICK (9 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG) 53295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo#elif HZ <= 1024 54295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo# define INET_TWDR_RECYCLE_TICK (10 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG) 55295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo#elif HZ <= 2048 56295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo# define INET_TWDR_RECYCLE_TICK (11 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG) 57295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo#else 58295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo# define INET_TWDR_RECYCLE_TICK (12 + 2 - INET_TWDR_RECYCLE_SLOTS_LOG) 59295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo#endif 60295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo 6196f817fedec48b59c9e8b22141cec4e56ad47913Eric Dumazetstatic inline u32 inet_tw_time_stamp(void) 6296f817fedec48b59c9e8b22141cec4e56ad47913Eric Dumazet{ 6396f817fedec48b59c9e8b22141cec4e56ad47913Eric Dumazet return jiffies; 6496f817fedec48b59c9e8b22141cec4e56ad47913Eric Dumazet} 6596f817fedec48b59c9e8b22141cec4e56ad47913Eric Dumazet 66295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo/* TIME_WAIT reaping mechanism. */ 67295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo#define INET_TWDR_TWKILL_SLOTS 8 /* Please keep this a power of 2. */ 68295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo 69295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo#define INET_TWDR_TWKILL_QUOTA 100 70295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo 71295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melostruct inet_timewait_death_row { 72295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo /* Short-time timewait calendar */ 73295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo int twcal_hand; 74187f5f84ef14a07dccf5f4503099708d60f6a724Eric Dumazet unsigned long twcal_jiffie; 75295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo struct timer_list twcal_timer; 76295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo struct hlist_head twcal_row[INET_TWDR_RECYCLE_SLOTS]; 77295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo 78295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo spinlock_t death_lock; 79295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo int tw_count; 80295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo int period; 81295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo u32 thread_slots; 82295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo struct work_struct twkill_work; 83295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo struct timer_list tw_timer; 84295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo int slot; 85295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo struct hlist_head cells[INET_TWDR_TWKILL_SLOTS]; 86295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo struct inet_hashinfo *hashinfo; 87295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo int sysctl_tw_recycle; 88295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo int sysctl_max_tw_buckets; 89295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo}; 90295ff7edb8f72b77d524759266f7524deae379b3Arnaldo Carvalho de Melo 911fd51155387264e3ca72094abadcaadb3f5969f6Joe Perchesvoid inet_twdr_hangman(unsigned long data); 921fd51155387264e3ca72094abadcaadb3f5969f6Joe Perchesvoid inet_twdr_twkill_work(struct work_struct *work); 931fd51155387264e3ca72094abadcaadb3f5969f6Joe Perchesvoid inet_twdr_twcal_tick(unsigned long data); 94696ab2d3bffc746fb8cf3712f066d42b9886aeedArnaldo Carvalho de Melo 958feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melostruct inet_bind_bucket; 968feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo 978feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo/* 988feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo * This is a TIME_WAIT sock. It works around the memory consumption 998feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo * problems of sockets in such a state on heavily loaded servers, but 1008feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo * without violating the protocol specification. 1018feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo */ 1028feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melostruct inet_timewait_sock { 1038feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo /* 1048feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo * Now struct sock also uses sock_common, so please just 1058feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo * don't add nothing before this first member (__tw_common) --acme 1068feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo */ 1078feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo struct sock_common __tw_common; 1088feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo#define tw_family __tw_common.skc_family 1098feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo#define tw_state __tw_common.skc_state 1108feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo#define tw_reuse __tw_common.skc_reuse 1119fe516ba3fb29b6f6a752ffd93342fdee500ec01Eric Dumazet#define tw_ipv6only __tw_common.skc_ipv6only 1128feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo#define tw_bound_dev_if __tw_common.skc_bound_dev_if 1133ab5aee7fe840b5b1b35a8d1ac11c3de5281e611Eric Dumazet#define tw_node __tw_common.skc_nulls_node 1148feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo#define tw_bind_node __tw_common.skc_bind_node 1158feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo#define tw_refcnt __tw_common.skc_refcnt 11681c3d5470ecc70564eb9209946730fe2be93ad06Eric Dumazet#define tw_hash __tw_common.skc_hash 1178feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo#define tw_prot __tw_common.skc_prot 11807feaebfcc10cd35e745c7073667935246494beeEric W. Biederman#define tw_net __tw_common.skc_net 11968835aba4d9b74e2f94106d13b6a4bddc447c4c8Eric Dumazet#define tw_daddr __tw_common.skc_daddr 120efe4208f47f907b86f528788da711e8ab9dea44dEric Dumazet#define tw_v6_daddr __tw_common.skc_v6_daddr 12168835aba4d9b74e2f94106d13b6a4bddc447c4c8Eric Dumazet#define tw_rcv_saddr __tw_common.skc_rcv_saddr 122efe4208f47f907b86f528788da711e8ab9dea44dEric Dumazet#define tw_v6_rcv_saddr __tw_common.skc_v6_rcv_saddr 123ce43b03e8889475817d427b1f3724c7e294b76ebEric Dumazet#define tw_dport __tw_common.skc_dport 124ce43b03e8889475817d427b1f3724c7e294b76ebEric Dumazet#define tw_num __tw_common.skc_num 125ce43b03e8889475817d427b1f3724c7e294b76ebEric Dumazet 126ad8bb78083ff58f5dff3ef8cf8ac3e0336f8ae36Arnaldo Carvalho de Melo int tw_timeout; 1278feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo volatile unsigned char tw_substate; 1288feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo unsigned char tw_rcv_wscale; 12968835aba4d9b74e2f94106d13b6a4bddc447c4c8Eric Dumazet 1308feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo /* Socket demultiplex comparisons on incoming packets. */ 13168835aba4d9b74e2f94106d13b6a4bddc447c4c8Eric Dumazet /* these three are in inet_sock */ 13223f33c2d4fd5986243b67a2bf5e63ebae1a76ffaAl Viro __be16 tw_sport; 1339e337b0fb3baa3c22490365b1bdee6f4741413d4Vegard Nossum kmemcheck_bitfield_begin(flags); 1348feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo /* And these are ours. */ 1359fe516ba3fb29b6f6a752ffd93342fdee500ec01Eric Dumazet unsigned int tw_pad0 : 1, /* 1 bit hole */ 136abf90cca9725bd05362fb3443ad55071a69a12d9Eric Dumazet tw_transparent : 1, 1371d13a96c74fc4802a775189ddb58bc6469ffdaa3Florent Fourcot tw_flowlabel : 20, 1381d13a96c74fc4802a775189ddb58bc6469ffdaa3Florent Fourcot tw_pad : 2, /* 2 bits hole */ 1391d13a96c74fc4802a775189ddb58bc6469ffdaa3Florent Fourcot tw_tos : 8; 1409e337b0fb3baa3c22490365b1bdee6f4741413d4Vegard Nossum kmemcheck_bitfield_end(flags); 14196f817fedec48b59c9e8b22141cec4e56ad47913Eric Dumazet u32 tw_ttd; 1428feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo struct inet_bind_bucket *tw_tb; 1438feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo struct hlist_node tw_death_node; 1448feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo}; 145b903d324bee2627036d024dceed73b3c96558795Eric Dumazet#define tw_tclass tw_tos 1468feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo 1478feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melostatic inline int inet_twsk_dead_hashed(const struct inet_timewait_sock *tw) 1488feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo{ 149da753beaeb1446aa87bcca7e8a0026633a8914f0Akinobu Mita return !hlist_unhashed(&tw->tw_death_node); 1508feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo} 1518feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo 1528feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melostatic inline void inet_twsk_dead_node_init(struct inet_timewait_sock *tw) 1538feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo{ 1548feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo tw->tw_death_node.pprev = NULL; 1558feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo} 1568feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo 1578feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melostatic inline void __inet_twsk_del_dead_node(struct inet_timewait_sock *tw) 1588feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo{ 1598feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo __hlist_del(&tw->tw_death_node); 1608feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo inet_twsk_dead_node_init(tw); 1618feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo} 1628feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo 1638feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melostatic inline int inet_twsk_del_dead_node(struct inet_timewait_sock *tw) 1648feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo{ 1658feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo if (inet_twsk_dead_hashed(tw)) { 1668feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo __inet_twsk_del_dead_node(tw); 1678feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo return 1; 1688feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo } 1698feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo return 0; 1708feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo} 1718feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo 1728feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo#define inet_twsk_for_each(tw, node, head) \ 1733ab5aee7fe840b5b1b35a8d1ac11c3de5281e611Eric Dumazet hlist_nulls_for_each_entry(tw, node, head, tw_node) 1748feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo 175b67bfe0d42cac56c512dd5da4b1b347a23f4b70aSasha Levin#define inet_twsk_for_each_inmate(tw, jail) \ 176b67bfe0d42cac56c512dd5da4b1b347a23f4b70aSasha Levin hlist_for_each_entry(tw, jail, tw_death_node) 1778feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo 178b67bfe0d42cac56c512dd5da4b1b347a23f4b70aSasha Levin#define inet_twsk_for_each_inmate_safe(tw, safe, jail) \ 179b67bfe0d42cac56c512dd5da4b1b347a23f4b70aSasha Levin hlist_for_each_entry_safe(tw, safe, jail, tw_death_node) 1808feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo 1818feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melostatic inline struct inet_timewait_sock *inet_twsk(const struct sock *sk) 1828feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo{ 1838feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo return (struct inet_timewait_sock *)sk; 1848feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo} 1858feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo 18605dbc7b59481ca891bbcfe6799a562d48159fbf7Eric Dumazetvoid inet_twsk_free(struct inet_timewait_sock *tw); 1871fd51155387264e3ca72094abadcaadb3f5969f6Joe Perchesvoid inet_twsk_put(struct inet_timewait_sock *tw); 188e48c414ee61f4ac8d5cff2973e66a7cbc8a93aa5Arnaldo Carvalho de Melo 1891fd51155387264e3ca72094abadcaadb3f5969f6Joe Perchesint inet_twsk_unhash(struct inet_timewait_sock *tw); 19013475a30b66cdb9250a34052c19ac98847373030Eric Dumazet 1911fd51155387264e3ca72094abadcaadb3f5969f6Joe Perchesint inet_twsk_bind_unhash(struct inet_timewait_sock *tw, 1921fd51155387264e3ca72094abadcaadb3f5969f6Joe Perches struct inet_hashinfo *hashinfo); 1933cdaedae635b17ce23c738ce7d364b442310cdecEric Dumazet 1941fd51155387264e3ca72094abadcaadb3f5969f6Joe Perchesstruct inet_timewait_sock *inet_twsk_alloc(const struct sock *sk, 1951fd51155387264e3ca72094abadcaadb3f5969f6Joe Perches const int state); 196c676270bcd25015b978722ec0352c330dcc87883Arnaldo Carvalho de Melo 1971fd51155387264e3ca72094abadcaadb3f5969f6Joe Perchesvoid __inet_twsk_hashdance(struct inet_timewait_sock *tw, struct sock *sk, 1981fd51155387264e3ca72094abadcaadb3f5969f6Joe Perches struct inet_hashinfo *hashinfo); 199696ab2d3bffc746fb8cf3712f066d42b9886aeedArnaldo Carvalho de Melo 2001fd51155387264e3ca72094abadcaadb3f5969f6Joe Perchesvoid inet_twsk_schedule(struct inet_timewait_sock *tw, 2011fd51155387264e3ca72094abadcaadb3f5969f6Joe Perches struct inet_timewait_death_row *twdr, 2021fd51155387264e3ca72094abadcaadb3f5969f6Joe Perches const int timeo, const int timewait_len); 2031fd51155387264e3ca72094abadcaadb3f5969f6Joe Perchesvoid inet_twsk_deschedule(struct inet_timewait_sock *tw, 2041fd51155387264e3ca72094abadcaadb3f5969f6Joe Perches struct inet_timewait_death_row *twdr); 2053b1e0a655f8eba44ab1ee2a1068d169ccfb853b9YOSHIFUJI Hideaki 2061fd51155387264e3ca72094abadcaadb3f5969f6Joe Perchesvoid inet_twsk_purge(struct inet_hashinfo *hashinfo, 2071fd51155387264e3ca72094abadcaadb3f5969f6Joe Perches struct inet_timewait_death_row *twdr, int family); 208d315492b1a6ba29da0fa2860759505ae1b2db857Daniel Lezcano 2093b1e0a655f8eba44ab1ee2a1068d169ccfb853b9YOSHIFUJI Hideakistatic inline 2103b1e0a655f8eba44ab1ee2a1068d169ccfb853b9YOSHIFUJI Hideakistruct net *twsk_net(const struct inet_timewait_sock *twsk) 2113b1e0a655f8eba44ab1ee2a1068d169ccfb853b9YOSHIFUJI Hideaki{ 212f943cbe6fb71d1389dd8684b9b4181e49f8e870cEric Dumazet return read_pnet(&twsk->tw_net); 2133b1e0a655f8eba44ab1ee2a1068d169ccfb853b9YOSHIFUJI Hideaki} 2143b1e0a655f8eba44ab1ee2a1068d169ccfb853b9YOSHIFUJI Hideaki 2153b1e0a655f8eba44ab1ee2a1068d169ccfb853b9YOSHIFUJI Hideakistatic inline 216f5aa23fd49063745f85644dd7a9330acd706add6Denis V. Lunevvoid twsk_net_set(struct inet_timewait_sock *twsk, struct net *net) 2173b1e0a655f8eba44ab1ee2a1068d169ccfb853b9YOSHIFUJI Hideaki{ 218f943cbe6fb71d1389dd8684b9b4181e49f8e870cEric Dumazet write_pnet(&twsk->tw_net, net); 2193b1e0a655f8eba44ab1ee2a1068d169ccfb853b9YOSHIFUJI Hideaki} 2208feaf0c0a5488b3d898a9c207eb6678f44ba3f26Arnaldo Carvalho de Melo#endif /* _INET_TIMEWAIT_SOCK_ */ 221