diff options
Diffstat (limited to 'ANDROID_3.4.5/include/net/inet_connection_sock.h')
| -rw-r--r-- | ANDROID_3.4.5/include/net/inet_connection_sock.h | 339 |
1 files changed, 0 insertions, 339 deletions
diff --git a/ANDROID_3.4.5/include/net/inet_connection_sock.h b/ANDROID_3.4.5/include/net/inet_connection_sock.h deleted file mode 100644 index dbf9aab3..00000000 --- a/ANDROID_3.4.5/include/net/inet_connection_sock.h +++ /dev/null @@ -1,339 +0,0 @@ -/* - * NET Generic infrastructure for INET connection oriented protocols. - * - * Definitions for inet_connection_sock - * - * Authors: Many people, see the TCP sources - * - * From code originally in TCP - * - * 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_CONNECTION_SOCK_H -#define _INET_CONNECTION_SOCK_H - -#include <linux/compiler.h> -#include <linux/string.h> -#include <linux/timer.h> -#include <linux/poll.h> - -#include <net/inet_sock.h> -#include <net/request_sock.h> - -#define INET_CSK_DEBUG 1 - -/* Cancel timers, when they are not required. */ -#undef INET_CSK_CLEAR_TIMERS - -struct inet_bind_bucket; -struct tcp_congestion_ops; - -/* - * Pointers to address related TCP functions - * (i.e. things that depend on the address family) - */ -struct inet_connection_sock_af_ops { - int (*queue_xmit)(struct sk_buff *skb, struct flowi *fl); - void (*send_check)(struct sock *sk, struct sk_buff *skb); - int (*rebuild_header)(struct sock *sk); - int (*conn_request)(struct sock *sk, struct sk_buff *skb); - struct sock *(*syn_recv_sock)(struct sock *sk, struct sk_buff *skb, - struct request_sock *req, - struct dst_entry *dst); - struct inet_peer *(*get_peer)(struct sock *sk, bool *release_it); - u16 net_header_len; - u16 sockaddr_len; - int (*setsockopt)(struct sock *sk, int level, int optname, - char __user *optval, unsigned int optlen); - int (*getsockopt)(struct sock *sk, int level, int optname, - char __user *optval, int __user *optlen); -#ifdef CONFIG_COMPAT - int (*compat_setsockopt)(struct sock *sk, - int level, int optname, - char __user *optval, unsigned int optlen); - int (*compat_getsockopt)(struct sock *sk, - int level, int optname, - char __user *optval, int __user *optlen); -#endif - void (*addr2sockaddr)(struct sock *sk, struct sockaddr *); - int (*bind_conflict)(const struct sock *sk, - const struct inet_bind_bucket *tb); -}; - -/** inet_connection_sock - INET connection oriented sock - * - * @icsk_accept_queue: FIFO of established children - * @icsk_bind_hash: Bind node - * @icsk_timeout: Timeout - * @icsk_retransmit_timer: Resend (no ack) - * @icsk_rto: Retransmit timeout - * @icsk_pmtu_cookie Last pmtu seen by socket - * @icsk_ca_ops Pluggable congestion control hook - * @icsk_af_ops Operations which are AF_INET{4,6} specific - * @icsk_ca_state: Congestion control state - * @icsk_retransmits: Number of unrecovered [RTO] timeouts - * @icsk_pending: Scheduled timer event - * @icsk_backoff: Backoff - * @icsk_syn_retries: Number of allowed SYN (or equivalent) retries - * @icsk_probes_out: unanswered 0 window probes - * @icsk_ext_hdr_len: Network protocol overhead (IP/IPv6 options) - * @icsk_ack: Delayed ACK control data - * @icsk_mtup; MTU probing control data - */ -struct inet_connection_sock { - /* inet_sock has to be the first member! */ - struct inet_sock icsk_inet; - struct request_sock_queue icsk_accept_queue; - struct inet_bind_bucket *icsk_bind_hash; - unsigned long icsk_timeout; - struct timer_list icsk_retransmit_timer; - struct timer_list icsk_delack_timer; - __u32 icsk_rto; - __u32 icsk_pmtu_cookie; - const struct tcp_congestion_ops *icsk_ca_ops; - const struct inet_connection_sock_af_ops *icsk_af_ops; - unsigned int (*icsk_sync_mss)(struct sock *sk, u32 pmtu); - __u8 icsk_ca_state; - __u8 icsk_retransmits; - __u8 icsk_pending; - __u8 icsk_backoff; - __u8 icsk_syn_retries; - __u8 icsk_probes_out; - __u16 icsk_ext_hdr_len; - struct { - __u8 pending; /* ACK is pending */ - __u8 quick; /* Scheduled number of quick acks */ - __u8 pingpong; /* The session is interactive */ - __u8 blocked; /* Delayed ACK was blocked by socket lock */ - __u32 ato; /* Predicted tick of soft clock */ - unsigned long timeout; /* Currently scheduled timeout */ - __u32 lrcvtime; /* timestamp of last received data packet */ - __u16 last_seg_size; /* Size of last incoming segment */ - __u16 rcv_mss; /* MSS used for delayed ACK decisions */ - } icsk_ack; - struct { - int enabled; - - /* Range of MTUs to search */ - int search_high; - int search_low; - - /* Information on the current probe. */ - int probe_size; - } icsk_mtup; - u32 icsk_ca_priv[16]; - u32 icsk_user_timeout; -#define ICSK_CA_PRIV_SIZE (16 * sizeof(u32)) -}; - -#define ICSK_TIME_RETRANS 1 /* Retransmit timer */ -#define ICSK_TIME_DACK 2 /* Delayed ack timer */ -#define ICSK_TIME_PROBE0 3 /* Zero window probe timer */ - -static inline struct inet_connection_sock *inet_csk(const struct sock *sk) -{ - return (struct inet_connection_sock *)sk; -} - -static inline void *inet_csk_ca(const struct sock *sk) -{ - return (void *)inet_csk(sk)->icsk_ca_priv; -} - -extern struct sock *inet_csk_clone_lock(const struct sock *sk, - const struct request_sock *req, - const gfp_t priority); - -enum inet_csk_ack_state_t { - ICSK_ACK_SCHED = 1, - ICSK_ACK_TIMER = 2, - ICSK_ACK_PUSHED = 4, - ICSK_ACK_PUSHED2 = 8 -}; - -extern void inet_csk_init_xmit_timers(struct sock *sk, - void (*retransmit_handler)(unsigned long), - void (*delack_handler)(unsigned long), - void (*keepalive_handler)(unsigned long)); -extern void inet_csk_clear_xmit_timers(struct sock *sk); - -static inline void inet_csk_schedule_ack(struct sock *sk) -{ - inet_csk(sk)->icsk_ack.pending |= ICSK_ACK_SCHED; -} - -static inline int inet_csk_ack_scheduled(const struct sock *sk) -{ - return inet_csk(sk)->icsk_ack.pending & ICSK_ACK_SCHED; -} - -static inline void inet_csk_delack_init(struct sock *sk) -{ - memset(&inet_csk(sk)->icsk_ack, 0, sizeof(inet_csk(sk)->icsk_ack)); -} - -extern void inet_csk_delete_keepalive_timer(struct sock *sk); -extern void inet_csk_reset_keepalive_timer(struct sock *sk, unsigned long timeout); - -#ifdef INET_CSK_DEBUG -extern const char inet_csk_timer_bug_msg[]; -#endif - -static inline void inet_csk_clear_xmit_timer(struct sock *sk, const int what) -{ - struct inet_connection_sock *icsk = inet_csk(sk); - - if (what == ICSK_TIME_RETRANS || what == ICSK_TIME_PROBE0) { - icsk->icsk_pending = 0; -#ifdef INET_CSK_CLEAR_TIMERS - sk_stop_timer(sk, &icsk->icsk_retransmit_timer); -#endif - } else if (what == ICSK_TIME_DACK) { - icsk->icsk_ack.blocked = icsk->icsk_ack.pending = 0; -#ifdef INET_CSK_CLEAR_TIMERS - sk_stop_timer(sk, &icsk->icsk_delack_timer); -#endif - } -#ifdef INET_CSK_DEBUG - else { - pr_debug("%s", inet_csk_timer_bug_msg); - } -#endif -} - -/* - * Reset the retransmission timer - */ -static inline void inet_csk_reset_xmit_timer(struct sock *sk, const int what, - unsigned long when, - const unsigned long max_when) -{ - struct inet_connection_sock *icsk = inet_csk(sk); - - if (when > max_when) { -#ifdef INET_CSK_DEBUG - pr_debug("reset_xmit_timer: sk=%p %d when=0x%lx, caller=%p\n", - sk, what, when, current_text_addr()); -#endif - when = max_when; - } - - if (what == ICSK_TIME_RETRANS || what == ICSK_TIME_PROBE0) { - icsk->icsk_pending = what; - icsk->icsk_timeout = jiffies + when; - sk_reset_timer(sk, &icsk->icsk_retransmit_timer, icsk->icsk_timeout); - } else if (what == ICSK_TIME_DACK) { - icsk->icsk_ack.pending |= ICSK_ACK_TIMER; - icsk->icsk_ack.timeout = jiffies + when; - sk_reset_timer(sk, &icsk->icsk_delack_timer, icsk->icsk_ack.timeout); - } -#ifdef INET_CSK_DEBUG - else { - pr_debug("%s", inet_csk_timer_bug_msg); - } -#endif -} - -extern struct sock *inet_csk_accept(struct sock *sk, int flags, int *err); - -extern struct request_sock *inet_csk_search_req(const struct sock *sk, - struct request_sock ***prevp, - const __be16 rport, - const __be32 raddr, - const __be32 laddr); -extern int inet_csk_bind_conflict(const struct sock *sk, - const struct inet_bind_bucket *tb); -extern int inet_csk_get_port(struct sock *sk, unsigned short snum); - -extern struct dst_entry* inet_csk_route_req(struct sock *sk, - struct flowi4 *fl4, - const struct request_sock *req); -extern struct dst_entry* inet_csk_route_child_sock(struct sock *sk, - struct sock *newsk, - const struct request_sock *req); - -static inline void inet_csk_reqsk_queue_add(struct sock *sk, - struct request_sock *req, - struct sock *child) -{ - reqsk_queue_add(&inet_csk(sk)->icsk_accept_queue, req, sk, child); -} - -extern void inet_csk_reqsk_queue_hash_add(struct sock *sk, - struct request_sock *req, - unsigned long timeout); - -static inline void inet_csk_reqsk_queue_removed(struct sock *sk, - struct request_sock *req) -{ - if (reqsk_queue_removed(&inet_csk(sk)->icsk_accept_queue, req) == 0) - inet_csk_delete_keepalive_timer(sk); -} - -static inline void inet_csk_reqsk_queue_added(struct sock *sk, - const unsigned long timeout) -{ - if (reqsk_queue_added(&inet_csk(sk)->icsk_accept_queue) == 0) - inet_csk_reset_keepalive_timer(sk, timeout); -} - -static inline int inet_csk_reqsk_queue_len(const struct sock *sk) -{ - return reqsk_queue_len(&inet_csk(sk)->icsk_accept_queue); -} - -static inline int inet_csk_reqsk_queue_young(const struct sock *sk) -{ - return reqsk_queue_len_young(&inet_csk(sk)->icsk_accept_queue); -} - -static inline int inet_csk_reqsk_queue_is_full(const struct sock *sk) -{ - return reqsk_queue_is_full(&inet_csk(sk)->icsk_accept_queue); -} - -static inline void inet_csk_reqsk_queue_unlink(struct sock *sk, - struct request_sock *req, - struct request_sock **prev) -{ - reqsk_queue_unlink(&inet_csk(sk)->icsk_accept_queue, req, prev); -} - -static inline void inet_csk_reqsk_queue_drop(struct sock *sk, - struct request_sock *req, - struct request_sock **prev) -{ - inet_csk_reqsk_queue_unlink(sk, req, prev); - inet_csk_reqsk_queue_removed(sk, req); - reqsk_free(req); -} - -extern void inet_csk_reqsk_queue_prune(struct sock *parent, - const unsigned long interval, - const unsigned long timeout, - const unsigned long max_rto); - -extern void inet_csk_destroy_sock(struct sock *sk); - -/* - * LISTEN is a special case for poll.. - */ -static inline unsigned int inet_csk_listen_poll(const struct sock *sk) -{ - return !reqsk_queue_empty(&inet_csk(sk)->icsk_accept_queue) ? - (POLLIN | POLLRDNORM) : 0; -} - -extern int inet_csk_listen_start(struct sock *sk, const int nr_table_entries); -extern void inet_csk_listen_stop(struct sock *sk); - -extern void inet_csk_addr2sockaddr(struct sock *sk, struct sockaddr *uaddr); - -extern int inet_csk_compat_getsockopt(struct sock *sk, int level, int optname, - char __user *optval, int __user *optlen); -extern int inet_csk_compat_setsockopt(struct sock *sk, int level, int optname, - char __user *optval, unsigned int optlen); -#endif /* _INET_CONNECTION_SOCK_H */ |