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126 lines
3.6 KiB
126 lines
3.6 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* INET An implementation of the TCP/IP protocol suite for the LINUX |
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* operating system. INET is implemented using the BSD Socket |
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* interface as the means of communication with the user level. |
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* |
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* Definitions for a generic INET TIMEWAIT sock |
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* |
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* From code originally in net/tcp.h |
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*/ |
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#ifndef _INET_TIMEWAIT_SOCK_ |
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#define _INET_TIMEWAIT_SOCK_ |
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#include <linux/list.h> |
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#include <linux/timer.h> |
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#include <linux/types.h> |
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#include <linux/workqueue.h> |
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#include <net/inet_sock.h> |
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#include <net/sock.h> |
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#include <net/tcp_states.h> |
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#include <net/timewait_sock.h> |
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#include <linux/atomic.h> |
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struct inet_bind_bucket; |
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/* |
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* This is a TIME_WAIT sock. It works around the memory consumption |
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* problems of sockets in such a state on heavily loaded servers, but |
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* without violating the protocol specification. |
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*/ |
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struct inet_timewait_sock { |
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/* |
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* Now struct sock also uses sock_common, so please just |
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* don't add nothing before this first member (__tw_common) --acme |
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*/ |
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struct sock_common __tw_common; |
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#define tw_family __tw_common.skc_family |
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#define tw_state __tw_common.skc_state |
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#define tw_reuse __tw_common.skc_reuse |
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#define tw_reuseport __tw_common.skc_reuseport |
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#define tw_ipv6only __tw_common.skc_ipv6only |
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#define tw_bound_dev_if __tw_common.skc_bound_dev_if |
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#define tw_node __tw_common.skc_nulls_node |
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#define tw_bind_node __tw_common.skc_bind_node |
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#define tw_refcnt __tw_common.skc_refcnt |
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#define tw_hash __tw_common.skc_hash |
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#define tw_prot __tw_common.skc_prot |
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#define tw_net __tw_common.skc_net |
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#define tw_daddr __tw_common.skc_daddr |
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#define tw_v6_daddr __tw_common.skc_v6_daddr |
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#define tw_rcv_saddr __tw_common.skc_rcv_saddr |
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#define tw_v6_rcv_saddr __tw_common.skc_v6_rcv_saddr |
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#define tw_dport __tw_common.skc_dport |
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#define tw_num __tw_common.skc_num |
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#define tw_cookie __tw_common.skc_cookie |
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#define tw_dr __tw_common.skc_tw_dr |
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__u32 tw_mark; |
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volatile unsigned char tw_substate; |
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unsigned char tw_rcv_wscale; |
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/* Socket demultiplex comparisons on incoming packets. */ |
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/* these three are in inet_sock */ |
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__be16 tw_sport; |
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/* And these are ours. */ |
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unsigned int tw_kill : 1, |
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tw_transparent : 1, |
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tw_flowlabel : 20, |
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tw_pad : 2, /* 2 bits hole */ |
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tw_tos : 8; |
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u32 tw_txhash; |
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u32 tw_priority; |
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struct timer_list tw_timer; |
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struct inet_bind_bucket *tw_tb; |
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}; |
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#define tw_tclass tw_tos |
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static inline struct inet_timewait_sock *inet_twsk(const struct sock *sk) |
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{ |
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return (struct inet_timewait_sock *)sk; |
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} |
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void inet_twsk_free(struct inet_timewait_sock *tw); |
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void inet_twsk_put(struct inet_timewait_sock *tw); |
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void inet_twsk_bind_unhash(struct inet_timewait_sock *tw, |
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struct inet_hashinfo *hashinfo); |
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struct inet_timewait_sock *inet_twsk_alloc(const struct sock *sk, |
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struct inet_timewait_death_row *dr, |
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const int state); |
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void inet_twsk_hashdance(struct inet_timewait_sock *tw, struct sock *sk, |
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struct inet_hashinfo *hashinfo); |
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void __inet_twsk_schedule(struct inet_timewait_sock *tw, int timeo, |
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bool rearm); |
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static inline void inet_twsk_schedule(struct inet_timewait_sock *tw, int timeo) |
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{ |
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__inet_twsk_schedule(tw, timeo, false); |
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} |
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static inline void inet_twsk_reschedule(struct inet_timewait_sock *tw, int timeo) |
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{ |
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__inet_twsk_schedule(tw, timeo, true); |
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} |
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void inet_twsk_deschedule_put(struct inet_timewait_sock *tw); |
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void inet_twsk_purge(struct inet_hashinfo *hashinfo, int family); |
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static inline |
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struct net *twsk_net(const struct inet_timewait_sock *twsk) |
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{ |
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return read_pnet(&twsk->tw_net); |
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} |
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static inline |
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void twsk_net_set(struct inet_timewait_sock *twsk, struct net *net) |
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{ |
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write_pnet(&twsk->tw_net, net); |
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} |
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#endif /* _INET_TIMEWAIT_SOCK_ */
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