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authorArnaldo Carvalho de Melo <acme@ghostprotocols.net>2005-08-09 20:11:08 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2005-08-29 15:49:14 -0700
commit3f421baa4720b708022f8bcc52a61e5cd6f10bf8 (patch)
treee4201b1e2356cea8b7bd8d68dfba06e84002a77d /include/net
parent463c84b97f24010a67cd871746d6a7e4c925a5f9 (diff)
[NET]: Just move the inet_connection_sock function from tcp sources
Completing the previous changeset, this also generalises tcp_v4_synq_add, renaming it to inet_csk_reqsk_queue_hash_add, already geing used in the DCCP tree, which I plan to merge RSN. Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/inet_connection_sock.h152
-rw-r--r--include/net/tcp.h160
2 files changed, 160 insertions, 152 deletions
diff --git a/include/net/inet_connection_sock.h b/include/net/inet_connection_sock.h
index ef609396e41..97e002001c1 100644
--- a/include/net/inet_connection_sock.h
+++ b/include/net/inet_connection_sock.h
@@ -16,9 +16,15 @@
#define _INET_CONNECTION_SOCK_H
#include <linux/ip.h>
+#include <linux/string.h>
#include <linux/timer.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 inet_hashinfo;
@@ -61,17 +67,107 @@ struct inet_connection_sock {
} icsk_ack;
};
+#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 */
+
static inline struct inet_connection_sock *inet_csk(const struct sock *sk)
{
return (struct inet_connection_sock *)sk;
}
+enum inet_csk_ack_state_t {
+ ICSK_ACK_SCHED = 1,
+ ICSK_ACK_TIMER = 2,
+ ICSK_ACK_PUSHED = 4
+};
+
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(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(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 __u16 rport,
@@ -83,4 +179,60 @@ extern int inet_csk_get_port(struct inet_hashinfo *hashinfo,
extern struct dst_entry* inet_csk_route_req(struct sock *sk,
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,
+ const unsigned 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);
+}
+
#endif /* _INET_CONNECTION_SOCK_H */
diff --git a/include/net/tcp.h b/include/net/tcp.h
index a943c79c88b..dd9a5a288f8 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -19,18 +19,16 @@
#define _TCP_H
#define TCP_DEBUG 1
-#define INET_CSK_DEBUG 1
#define FASTRETRANS_DEBUG 1
-/* Cancel timers, when they are not required. */
-#undef INET_CSK_CLEAR_TIMERS
-
#include <linux/config.h>
#include <linux/list.h>
#include <linux/tcp.h>
#include <linux/slab.h>
#include <linux/cache.h>
#include <linux/percpu.h>
+
+#include <net/inet_connection_sock.h>
#include <net/inet_hashtables.h>
#include <net/checksum.h>
#include <net/request_sock.h>
@@ -206,11 +204,6 @@ extern void tcp_tw_deschedule(struct inet_timewait_sock *tw);
#define TCPOLEN_SACK_BASE_ALIGNED 4
#define TCPOLEN_SACK_PERBLOCK 8
-#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 */
-
/* Flags in tp->nonagle */
#define TCP_NAGLE_OFF 1 /* Nagle's algo is disabled */
#define TCP_NAGLE_CORK 2 /* Socket is corked */
@@ -257,12 +250,6 @@ extern atomic_t tcp_memory_allocated;
extern atomic_t tcp_sockets_allocated;
extern int tcp_memory_pressure;
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-#define AF_INET_FAMILY(fam) ((fam) == AF_INET)
-#else
-#define AF_INET_FAMILY(fam) 1
-#endif
-
/*
* Pointers to address related TCP functions
* (i.e. things that depend on the address family)
@@ -373,22 +360,6 @@ extern int tcp_rcv_established(struct sock *sk,
extern void tcp_rcv_space_adjust(struct sock *sk);
-enum inet_csk_ack_state_t {
- ICSK_ACK_SCHED = 1,
- ICSK_ACK_TIMER = 2,
- ICSK_ACK_PUSHED = 4
-};
-
-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 tcp_dec_quickack_mode(struct sock *sk,
const unsigned int pkts)
{
@@ -406,11 +377,6 @@ static inline void tcp_dec_quickack_mode(struct sock *sk,
extern void tcp_enter_quickack_mode(struct sock *sk);
-static inline void inet_csk_delack_init(struct sock *sk)
-{
- memset(&inet_csk(sk)->icsk_ack, 0, sizeof(inet_csk(sk)->icsk_ack));
-}
-
static inline void tcp_clear_options(struct tcp_options_received *rx_opt)
{
rx_opt->tstamp_ok = rx_opt->sack_ok = rx_opt->wscale_ok = rx_opt->snd_wscale = 0;
@@ -442,7 +408,6 @@ extern void tcp_update_metrics(struct sock *sk);
extern void tcp_close(struct sock *sk,
long timeout);
-extern struct sock * inet_csk_accept(struct sock *sk, int flags, int *err);
extern unsigned int tcp_poll(struct file * file, struct socket *sock, struct poll_table_struct *wait);
extern int tcp_getsockopt(struct sock *sk, int level,
@@ -541,15 +506,9 @@ static inline void tcp_clear_xmit_timers(struct sock *sk)
inet_csk_clear_xmit_timers(sk);
}
-extern void inet_csk_delete_keepalive_timer(struct sock *sk);
-extern void inet_csk_reset_keepalive_timer(struct sock *sk, unsigned long timeout);
extern unsigned int tcp_sync_mss(struct sock *sk, u32 pmtu);
extern unsigned int tcp_current_mss(struct sock *sk, int large);
-#ifdef INET_CSK_DEBUG
-extern const char inet_csk_timer_bug_msg[];
-#endif
-
/* tcp_diag.c */
extern void tcp_get_info(struct sock *, struct tcp_info *);
@@ -559,60 +518,6 @@ typedef int (*sk_read_actor_t)(read_descriptor_t *, struct sk_buff *,
extern int tcp_read_sock(struct sock *sk, read_descriptor_t *desc,
sk_read_actor_t recv_actor);
-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(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)
-{
- struct inet_connection_sock *icsk = inet_csk(sk);
-
- if (when > TCP_RTO_MAX) {
-#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 = TCP_RTO_MAX;
- }
-
- 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(inet_csk_timer_bug_msg);
- }
-#endif
-}
-
/* Initialize RCV_MSS value.
* RCV_MSS is an our guess about MSS used by the peer.
* We haven't any direct information about the MSS.
@@ -765,7 +670,8 @@ static inline void tcp_packets_out_inc(struct sock *sk,
tp->packets_out += tcp_skb_pcount(skb);
if (!orig)
- inet_csk_reset_xmit_timer(sk, ICSK_TIME_RETRANS, inet_csk(sk)->icsk_rto);
+ inet_csk_reset_xmit_timer(sk, ICSK_TIME_RETRANS,
+ inet_csk(sk)->icsk_rto, TCP_RTO_MAX);
}
static inline void tcp_packets_out_dec(struct tcp_sock *tp,
@@ -934,7 +840,8 @@ static __inline__ void tcp_check_probe_timer(struct sock *sk, struct tcp_sock *t
{
const struct inet_connection_sock *icsk = inet_csk(sk);
if (!tp->packets_out && !icsk->icsk_pending)
- inet_csk_reset_xmit_timer(sk, ICSK_TIME_PROBE0, icsk->icsk_rto);
+ inet_csk_reset_xmit_timer(sk, ICSK_TIME_PROBE0,
+ icsk->icsk_rto, TCP_RTO_MAX);
}
static __inline__ void tcp_push_pending_frames(struct sock *sk,
@@ -1017,7 +924,8 @@ static __inline__ int tcp_prequeue(struct sock *sk, struct sk_buff *skb)
wake_up_interruptible(sk->sk_sleep);
if (!inet_csk_ack_scheduled(sk))
inet_csk_reset_xmit_timer(sk, ICSK_TIME_DACK,
- (3 * TCP_RTO_MIN) / 4);
+ (3 * TCP_RTO_MIN) / 4,
+ TCP_RTO_MAX);
}
return 1;
}
@@ -1181,58 +1089,6 @@ static inline int tcp_full_space(const struct sock *sk)
return tcp_win_from_space(sk->sk_rcvbuf);
}
-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);
-}
-
-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);
-}
-
static __inline__ void tcp_openreq_init(struct request_sock *req,
struct tcp_options_received *rx_opt,
struct sk_buff *skb)