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-rw-r--r--include/net/tcp.h87
1 files changed, 11 insertions, 76 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h
index e71f8ba3e101..d438ba566b89 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -31,6 +31,7 @@
31#include <linux/cache.h> 31#include <linux/cache.h>
32#include <linux/percpu.h> 32#include <linux/percpu.h>
33#include <net/checksum.h> 33#include <net/checksum.h>
34#include <net/request_sock.h>
34#include <net/sock.h> 35#include <net/sock.h>
35#include <net/snmp.h> 36#include <net/snmp.h>
36#include <net/ip.h> 37#include <net/ip.h>
@@ -613,74 +614,6 @@ extern atomic_t tcp_memory_allocated;
613extern atomic_t tcp_sockets_allocated; 614extern atomic_t tcp_sockets_allocated;
614extern int tcp_memory_pressure; 615extern int tcp_memory_pressure;
615 616
616struct open_request;
617
618struct or_calltable {
619 int family;
620 int (*rtx_syn_ack) (struct sock *sk, struct open_request *req, struct dst_entry*);
621 void (*send_ack) (struct sk_buff *skb, struct open_request *req);
622 void (*destructor) (struct open_request *req);
623 void (*send_reset) (struct sk_buff *skb);
624};
625
626struct tcp_v4_open_req {
627 __u32 loc_addr;
628 __u32 rmt_addr;
629 struct ip_options *opt;
630};
631
632#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
633struct tcp_v6_open_req {
634 struct in6_addr loc_addr;
635 struct in6_addr rmt_addr;
636 struct sk_buff *pktopts;
637 int iif;
638};
639#endif
640
641/* this structure is too big */
642struct open_request {
643 struct open_request *dl_next; /* Must be first member! */
644 __u32 rcv_isn;
645 __u32 snt_isn;
646 __u16 rmt_port;
647 __u16 mss;
648 __u8 retrans;
649 __u8 __pad;
650 __u16 snd_wscale : 4,
651 rcv_wscale : 4,
652 tstamp_ok : 1,
653 sack_ok : 1,
654 wscale_ok : 1,
655 ecn_ok : 1,
656 acked : 1;
657 /* The following two fields can be easily recomputed I think -AK */
658 __u32 window_clamp; /* window clamp at creation time */
659 __u32 rcv_wnd; /* rcv_wnd offered first time */
660 __u32 ts_recent;
661 unsigned long expires;
662 struct or_calltable *class;
663 struct sock *sk;
664 union {
665 struct tcp_v4_open_req v4_req;
666#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
667 struct tcp_v6_open_req v6_req;
668#endif
669 } af;
670};
671
672/* SLAB cache for open requests. */
673extern kmem_cache_t *tcp_openreq_cachep;
674
675#define tcp_openreq_alloc() kmem_cache_alloc(tcp_openreq_cachep, SLAB_ATOMIC)
676#define tcp_openreq_fastfree(req) kmem_cache_free(tcp_openreq_cachep, req)
677
678static inline void tcp_openreq_free(struct open_request *req)
679{
680 req->class->destructor(req);
681 tcp_openreq_fastfree(req);
682}
683
684#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) 617#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
685#define TCP_INET_FAMILY(fam) ((fam) == AF_INET) 618#define TCP_INET_FAMILY(fam) ((fam) == AF_INET)
686#else 619#else
@@ -1832,17 +1765,19 @@ static __inline__ void tcp_openreq_init(struct open_request *req,
1832 struct tcp_options_received *rx_opt, 1765 struct tcp_options_received *rx_opt,
1833 struct sk_buff *skb) 1766 struct sk_buff *skb)
1834{ 1767{
1768 struct inet_request_sock *ireq = inet_rsk(req);
1769
1835 req->rcv_wnd = 0; /* So that tcp_send_synack() knows! */ 1770 req->rcv_wnd = 0; /* So that tcp_send_synack() knows! */
1836 req->rcv_isn = TCP_SKB_CB(skb)->seq; 1771 tcp_rsk(req)->rcv_isn = TCP_SKB_CB(skb)->seq;
1837 req->mss = rx_opt->mss_clamp; 1772 req->mss = rx_opt->mss_clamp;
1838 req->ts_recent = rx_opt->saw_tstamp ? rx_opt->rcv_tsval : 0; 1773 req->ts_recent = rx_opt->saw_tstamp ? rx_opt->rcv_tsval : 0;
1839 req->tstamp_ok = rx_opt->tstamp_ok; 1774 ireq->tstamp_ok = rx_opt->tstamp_ok;
1840 req->sack_ok = rx_opt->sack_ok; 1775 ireq->sack_ok = rx_opt->sack_ok;
1841 req->snd_wscale = rx_opt->snd_wscale; 1776 ireq->snd_wscale = rx_opt->snd_wscale;
1842 req->wscale_ok = rx_opt->wscale_ok; 1777 ireq->wscale_ok = rx_opt->wscale_ok;
1843 req->acked = 0; 1778 ireq->acked = 0;
1844 req->ecn_ok = 0; 1779 ireq->ecn_ok = 0;
1845 req->rmt_port = skb->h.th->source; 1780 ireq->rmt_port = skb->h.th->source;
1846} 1781}
1847 1782
1848extern void tcp_enter_memory_pressure(void); 1783extern void tcp_enter_memory_pressure(void);