Merge to Fedora kernel-2.6.18-1.2224_FC5 patched with stable patch-2.6.18.1-vs2.0...

[linux-2.6.git] / include / net / tcp.h

diff --git a/include/net/tcp.h b/include/net/tcp.h
index 8fa2462..7811568 100644 (file)
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -21,13 +21,13 @@
 #define TCP_DEBUG 1
 #define FASTRETRANS_DEBUG 1
 
-#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 <linux/skbuff.h>
+#include <linux/dmaengine.h>
 
 #include <net/inet_connection_sock.h>
 #include <net/inet_timewait_sock.h>
@@ -218,6 +218,7 @@ extern int sysctl_tcp_adv_win_scale;
 extern int sysctl_tcp_tw_reuse;
 extern int sysctl_tcp_frto;
 extern int sysctl_tcp_low_latency;
+extern int sysctl_tcp_dma_copybreak;
 extern int sysctl_tcp_nometrics_save;
 extern int sysctl_tcp_moderate_rcvbuf;
 extern int sysctl_tcp_tso_win_divisor;
@@ -225,6 +226,7 @@ extern int sysctl_tcp_abc;
 extern int sysctl_tcp_mtu_probing;
 extern int sysctl_tcp_base_mss;
 extern int sysctl_tcp_workaround_signed_windows;
+extern int sysctl_tcp_slow_start_after_idle;
 
 extern atomic_t tcp_memory_allocated;
 extern atomic_t tcp_sockets_allocated;
@@ -295,6 +297,8 @@ extern int                  tcp_rcv_established(struct sock *sk,
 
 extern void                    tcp_rcv_space_adjust(struct sock *sk);
 
+extern void                    tcp_cleanup_rbuf(struct sock *sk, int copied);
+
 extern int                     tcp_twsk_unique(struct sock *sk,
                                                struct sock *sktw, void *twp);
 
@@ -433,7 +437,7 @@ extern int  tcp_send_synack(struct sock *);
 extern void tcp_push_one(struct sock *, unsigned int mss_now);
 extern void tcp_send_ack(struct sock *sk);
 extern void tcp_send_delayed_ack(struct sock *sk);
-extern void cleanup_rbuf(struct sock *sk, int copied);
+extern void tcp_cleanup_rbuf(struct sock *sk, int copied);
 
 /* tcp_input.c */
 extern void tcp_cwnd_application_limited(struct sock *sk);
@@ -631,7 +635,7 @@ struct tcp_congestion_ops {
        /* return slow start threshold (required) */
        u32 (*ssthresh)(struct sock *sk);
        /* lower bound for congestion window (optional) */
-       u32 (*min_cwnd)(struct sock *sk);
+       u32 (*min_cwnd)(const struct sock *sk);
        /* do new cwnd calculation (required) */
        void (*cong_avoid)(struct sock *sk, u32 ack,
                           u32 rtt, u32 in_flight, int good_ack);
@@ -666,7 +670,7 @@ extern struct tcp_congestion_ops tcp_init_congestion_ops;
 extern u32 tcp_reno_ssthresh(struct sock *sk);
 extern void tcp_reno_cong_avoid(struct sock *sk, u32 ack,
                                u32 rtt, u32 in_flight, int flag);
-extern u32 tcp_reno_min_cwnd(struct sock *sk);
+extern u32 tcp_reno_min_cwnd(const struct sock *sk);
 extern struct tcp_congestion_ops tcp_reno;
 
 static inline void tcp_set_ca_state(struct sock *sk, const u8 ca_state)
@@ -750,7 +754,7 @@ static inline int tcp_is_cwnd_limited(const struct sock *sk, u32 in_flight)
        if (in_flight >= tp->snd_cwnd)
                return 1;
 
-       if (!(sk->sk_route_caps & NETIF_F_TSO))
+       if (!sk_can_gso(sk))
                return 0;
 
        left = tp->snd_cwnd - in_flight;
@@ -820,6 +824,12 @@ static inline void tcp_prequeue_init(struct tcp_sock *tp)
        tp->ucopy.len = 0;
        tp->ucopy.memory = 0;
        skb_queue_head_init(&tp->ucopy.prequeue);
+#ifdef CONFIG_NET_DMA
+       tp->ucopy.dma_chan = NULL;
+       tp->ucopy.wakeup = 0;
+       tp->ucopy.pinned_list = NULL;
+       tp->ucopy.dma_cookie = 0;
+#endif
 }
 
 /* Packet is added to VJ-style prequeue for processing in process
@@ -907,6 +917,9 @@ static inline void tcp_set_state(struct sock *sk, int state)
 
 static inline void tcp_done(struct sock *sk)
 {
+       if(sk->sk_state == TCP_SYN_SENT || sk->sk_state == TCP_SYN_RECV)
+               TCP_INC_STATS_BH(TCP_MIB_ATTEMPTFAILS);
+
        tcp_set_state(sk, TCP_CLOSE);
        tcp_clear_xmit_timers(sk);