diff options
Diffstat (limited to 'include/net/inet_timewait_sock.h')
| -rw-r--r-- | include/net/inet_timewait_sock.h | 108 |
1 files changed, 10 insertions, 98 deletions
diff --git a/include/net/inet_timewait_sock.h b/include/net/inet_timewait_sock.h index 6c566034e26d..360c4802288d 100644 --- a/include/net/inet_timewait_sock.h +++ b/include/net/inet_timewait_sock.h @@ -31,67 +31,14 @@ 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 - -static inline u32 inet_tw_time_stamp(void) -{ - return jiffies; -} - -/* 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; + atomic_t tw_count; + + struct inet_hashinfo *hashinfo ____cacheline_aligned_in_smp; int sysctl_tw_recycle; int sysctl_max_tw_buckets; }; -void inet_twdr_hangman(unsigned long data); -void inet_twdr_twkill_work(struct work_struct *work); -void inet_twdr_twcal_tick(unsigned long data); - struct inet_bind_bucket; /* @@ -122,6 +69,7 @@ struct inet_timewait_sock { #define tw_v6_rcv_saddr __tw_common.skc_v6_rcv_saddr #define tw_dport __tw_common.skc_dport #define tw_num __tw_common.skc_num +#define tw_cookie __tw_common.skc_cookie int tw_timeout; volatile unsigned char tw_substate; @@ -132,52 +80,18 @@ struct inet_timewait_sock { __be16 tw_sport; kmemcheck_bitfield_begin(flags); /* And these are ours. */ - unsigned int tw_pad0 : 1, /* 1 bit hole */ + unsigned int tw_kill : 1, tw_transparent : 1, tw_flowlabel : 20, tw_pad : 2, /* 2 bits hole */ tw_tos : 8; kmemcheck_bitfield_end(flags); - u32 tw_ttd; + struct timer_list tw_timer; struct inet_bind_bucket *tw_tb; - struct hlist_node tw_death_node; + struct inet_timewait_death_row *tw_dr; }; #define tw_tclass tw_tos -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, jail) \ - hlist_for_each_entry(tw, jail, tw_death_node) - -#define inet_twsk_for_each_inmate_safe(tw, safe, jail) \ - hlist_for_each_entry_safe(tw, safe, jail, tw_death_node) - static inline struct inet_timewait_sock *inet_twsk(const struct sock *sk) { return (struct inet_timewait_sock *)sk; @@ -192,16 +106,14 @@ int inet_twsk_bind_unhash(struct inet_timewait_sock *tw, struct inet_hashinfo *hashinfo); struct inet_timewait_sock *inet_twsk_alloc(const struct sock *sk, + struct inet_timewait_death_row *dr, const int state); void __inet_twsk_hashdance(struct inet_timewait_sock *tw, struct sock *sk, struct inet_hashinfo *hashinfo); -void inet_twsk_schedule(struct inet_timewait_sock *tw, - struct inet_timewait_death_row *twdr, - const int timeo, const int timewait_len); -void inet_twsk_deschedule(struct inet_timewait_sock *tw, - struct inet_timewait_death_row *twdr); +void inet_twsk_schedule(struct inet_timewait_sock *tw, const int timeo); +void inet_twsk_deschedule(struct inet_timewait_sock *tw); void inet_twsk_purge(struct inet_hashinfo *hashinfo, struct inet_timewait_death_row *twdr, int family); |