diff options
Diffstat (limited to 'include/net/inet_connection_sock.h')
| -rw-r--r-- | include/net/inet_connection_sock.h | 139 |
1 files changed, 103 insertions, 36 deletions
diff --git a/include/net/inet_connection_sock.h b/include/net/inet_connection_sock.h index 651f824c100..7a431388756 100644 --- a/include/net/inet_connection_sock.h +++ b/include/net/inet_connection_sock.h @@ -15,9 +15,12 @@ #ifndef _INET_CONNECTION_SOCK_H #define _INET_CONNECTION_SOCK_H -#include <linux/ip.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 @@ -26,9 +29,41 @@ #undef INET_CSK_CLEAR_TIMERS struct inet_bind_bucket; -struct inet_hashinfo; 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 sock *sk, struct sk_buff *skb, struct flowi *fl); + void (*send_check)(struct sock *sk, struct sk_buff *skb); + int (*rebuild_header)(struct sock *sk); + void (*sk_rx_dst_set)(struct sock *sk, const struct sk_buff *skb); + 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); + u16 net_header_len; + u16 net_frag_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, bool relax); +}; + /** inet_connection_sock - INET connection oriented sock * * @icsk_accept_queue: FIFO of established children @@ -36,14 +71,18 @@ struct tcp_congestion_ops; * @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! */ @@ -54,14 +93,17 @@ struct inet_connection_sock { struct timer_list icsk_retransmit_timer; struct timer_list icsk_delack_timer; __u32 icsk_rto; - struct tcp_congestion_ops *icsk_ca_ops; + __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; - /* 2 BYTES HOLE, TRY TO PACK! */ + __u16 icsk_ext_hdr_len; struct { __u8 pending; /* ACK is pending */ __u8 quick; /* Scheduled number of quick acks */ @@ -73,14 +115,26 @@ struct inet_connection_sock { __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 */ -#define ICSK_TIME_KEEPOPEN 4 /* Keepalive timer */ +#define ICSK_TIME_EARLY_RETRANS 4 /* Early retransmit timer */ +#define ICSK_TIME_LOSS_PROBE 5 /* Tail loss probe timer */ static inline struct inet_connection_sock *inet_csk(const struct sock *sk) { @@ -92,21 +146,22 @@ static inline void *inet_csk_ca(const struct sock *sk) return (void *)inet_csk(sk)->icsk_ca_priv; } -extern struct sock *inet_csk_clone(struct sock *sk, - const struct request_sock *req, - const unsigned int __nocast priority); +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_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); +void inet_csk_init_xmit_timers(struct sock *sk, + void (*retransmit_handler)(unsigned long), + void (*delack_handler)(unsigned long), + void (*keepalive_handler)(unsigned long)); +void inet_csk_clear_xmit_timers(struct sock *sk); static inline void inet_csk_schedule_ack(struct sock *sk) { @@ -123,8 +178,8 @@ 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); +void inet_csk_delete_keepalive_timer(struct sock *sk); +void inet_csk_reset_keepalive_timer(struct sock *sk, unsigned long timeout); #ifdef INET_CSK_DEBUG extern const char inet_csk_timer_bug_msg[]; @@ -169,7 +224,8 @@ static inline void inet_csk_reset_xmit_timer(struct sock *sk, const int what, when = max_when; } - if (what == ICSK_TIME_RETRANS || what == ICSK_TIME_PROBE0) { + if (what == ICSK_TIME_RETRANS || what == ICSK_TIME_PROBE0 || + what == ICSK_TIME_EARLY_RETRANS || what == ICSK_TIME_LOSS_PROBE) { icsk->icsk_pending = what; icsk->icsk_timeout = jiffies + when; sk_reset_timer(sk, &icsk->icsk_retransmit_timer, icsk->icsk_timeout); @@ -185,17 +241,20 @@ static inline void inet_csk_reset_xmit_timer(struct sock *sk, const int what, #endif } -extern struct sock *inet_csk_accept(struct sock *sk, int flags, int *err); +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 __u16 rport, - const __u32 raddr, - const __u32 laddr); -extern int inet_csk_get_port(struct inet_hashinfo *hashinfo, - struct sock *sk, unsigned short snum); +struct request_sock *inet_csk_search_req(const struct sock *sk, + struct request_sock ***prevp, + const __be16 rport, + const __be32 raddr, + const __be32 laddr); +int inet_csk_bind_conflict(const struct sock *sk, + const struct inet_bind_bucket *tb, bool relax); +int inet_csk_get_port(struct sock *sk, unsigned short snum); -extern struct dst_entry* inet_csk_route_req(struct sock *sk, +struct dst_entry *inet_csk_route_req(struct sock *sk, struct flowi4 *fl4, + const struct request_sock *req); +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, @@ -205,9 +264,8 @@ static inline void inet_csk_reqsk_queue_add(struct sock *sk, 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, - const unsigned timeout); +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) @@ -254,12 +312,13 @@ static inline void inet_csk_reqsk_queue_drop(struct sock *sk, 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); +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); +void inet_csk_destroy_sock(struct sock *sk); +void inet_csk_prepare_forced_close(struct sock *sk); /* * LISTEN is a special case for poll.. @@ -270,7 +329,15 @@ static inline unsigned int inet_csk_listen_poll(const struct sock *sk) (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); +int inet_csk_listen_start(struct sock *sk, const int nr_table_entries); +void inet_csk_listen_stop(struct sock *sk); + +void inet_csk_addr2sockaddr(struct sock *sk, struct sockaddr *uaddr); + +int inet_csk_compat_getsockopt(struct sock *sk, int level, int optname, + char __user *optval, int __user *optlen); +int inet_csk_compat_setsockopt(struct sock *sk, int level, int optname, + char __user *optval, unsigned int optlen); +struct dst_entry *inet_csk_update_pmtu(struct sock *sk, u32 mtu); #endif /* _INET_CONNECTION_SOCK_H */ |