1 files changed, 20 insertions, 141 deletions

diff --git a/include/net/tcp.h b/include/net/tcp.h
index ec9e20c27179..f4f9aba07ac2 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -721,11 +721,16 @@ static inline int tcp_ack_scheduled(struct tcp_sock *tp)
         return tp->ack.pending&TCP_ACK_SCHED;
 }
 
-static __inline__ void tcp_dec_quickack_mode(struct tcp_sock *tp)
+static __inline__ void tcp_dec_quickack_mode(struct tcp_sock *tp, unsigned int pkts)
 {
-        if (tp->ack.quick && --tp->ack.quick == 0) {
-                /* Leaving quickack mode we deflate ATO. */
-                tp->ack.ato = TCP_ATO_MIN;
+        if (tp->ack.quick) {
+                if (pkts >= tp->ack.quick) {
+                        tp->ack.quick = 0;
+
+                        /* Leaving quickack mode we deflate ATO. */
+                        tp->ack.ato = TCP_ATO_MIN;
+                } else
+                        tp->ack.quick -= pkts;
         }
 }
 
@@ -843,7 +848,9 @@ extern __u32 cookie_v4_init_sequence(struct sock *sk, struct sk_buff *skb,
 
 /* tcp_output.c */
 
-extern int tcp_write_xmit(struct sock *, int nonagle);
+extern void __tcp_push_pending_frames(struct sock *sk, struct tcp_sock *tp,
+                                      unsigned int cur_mss, int nonagle);
+extern int tcp_may_send_now(struct sock *sk, struct tcp_sock *tp);
 extern int tcp_retransmit_skb(struct sock *, struct sk_buff *);
 extern void tcp_xmit_retransmit_queue(struct sock *);
 extern void tcp_simple_retransmit(struct sock *);
@@ -853,12 +860,16 @@ extern void tcp_send_probe0(struct sock *);
 extern void tcp_send_partial(struct sock *);
 extern int  tcp_write_wakeup(struct sock *);
 extern void tcp_send_fin(struct sock *sk);
-extern void tcp_send_active_reset(struct sock *sk, int priority);
+extern void tcp_send_active_reset(struct sock *sk,
+                                  unsigned int __nocast priority);
 extern int  tcp_send_synack(struct sock *);
-extern void tcp_push_one(struct sock *, unsigned mss_now);
+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);
 
+/* tcp_input.c */
+extern void tcp_cwnd_application_limited(struct sock *sk);
+
 /* tcp_timer.c */
 extern void tcp_init_xmit_timers(struct sock *);
 extern void tcp_clear_xmit_timers(struct sock *);
@@ -958,7 +969,7 @@ static inline void tcp_reset_xmit_timer(struct sock *sk, int what, unsigned long
 static inline void tcp_initialize_rcv_mss(struct sock *sk)
 {
         struct tcp_sock *tp = tcp_sk(sk);
-        unsigned int hint = min(tp->advmss, tp->mss_cache_std);
+        unsigned int hint = min_t(unsigned int, tp->advmss, tp->mss_cache);
 
         hint = min(hint, tp->rcv_wnd/2);
         hint = min(hint, TCP_MIN_RCVMSS);
@@ -981,7 +992,7 @@ static __inline__ void tcp_fast_path_on(struct tcp_sock *tp)
 
 static inline void tcp_fast_path_check(struct sock *sk, struct tcp_sock *tp)
 {
-        if (skb_queue_len(&tp->out_of_order_queue) == 0 &&
+        if (skb_queue_empty(&tp->out_of_order_queue) &&
             tp->rcv_wnd &&
             atomic_read(&sk->sk_rmem_alloc) < sk->sk_rcvbuf &&
             !tp->urg_data)
@@ -1225,28 +1236,6 @@ static inline void tcp_sync_left_out(struct tcp_sock *tp)
         tp->left_out = tp->sacked_out + tp->lost_out;
 }
 
-extern void tcp_cwnd_application_limited(struct sock *sk);
-
-/* Congestion window validation. (RFC2861) */
-
-static inline void tcp_cwnd_validate(struct sock *sk, struct tcp_sock *tp)
-{
-        __u32 packets_out = tp->packets_out;
-
-        if (packets_out >= tp->snd_cwnd) {
-                /* Network is feed fully. */
-                tp->snd_cwnd_used = 0;
-                tp->snd_cwnd_stamp = tcp_time_stamp;
-        } else {
-                /* Network starves. */
-                if (tp->packets_out > tp->snd_cwnd_used)
-                        tp->snd_cwnd_used = tp->packets_out;
-
-                if ((s32)(tcp_time_stamp - tp->snd_cwnd_stamp) >= tp->rto)
-                        tcp_cwnd_application_limited(sk);
-        }
-}
-
 /* Set slow start threshould and cwnd not falling to slow start */
 static inline void __tcp_enter_cwr(struct tcp_sock *tp)
 {
@@ -1279,12 +1268,6 @@ static __inline__ __u32 tcp_max_burst(const struct tcp_sock *tp)
         return 3;
 }
 
-static __inline__ int tcp_minshall_check(const struct tcp_sock *tp)
-{
-        return after(tp->snd_sml,tp->snd_una) &&
-                !after(tp->snd_sml, tp->snd_nxt);
-}
-
 static __inline__ void tcp_minshall_update(struct tcp_sock *tp, int mss, 
                                            const struct sk_buff *skb)
 {
@@ -1292,122 +1275,18 @@ static __inline__ void tcp_minshall_update(struct tcp_sock *tp, int mss,
                 tp->snd_sml = TCP_SKB_CB(skb)->end_seq;
 }
 
-/* Return 0, if packet can be sent now without violation Nagle's rules:
-   1. It is full sized.
-   2. Or it contains FIN.
-   3. Or TCP_NODELAY was set.
-   4. Or TCP_CORK is not set, and all sent packets are ACKed.
-      With Minshall's modification: all sent small packets are ACKed.
- */
-
-static __inline__ int
-tcp_nagle_check(const struct tcp_sock *tp, const struct sk_buff *skb, 
-                unsigned mss_now, int nonagle)
-{
-        return (skb->len < mss_now &&
-                !(TCP_SKB_CB(skb)->flags & TCPCB_FLAG_FIN) &&
-                ((nonagle&TCP_NAGLE_CORK) ||
-                 (!nonagle &&
-                  tp->packets_out &&
-                  tcp_minshall_check(tp))));
-}
-
-extern void tcp_set_skb_tso_segs(struct sock *, struct sk_buff *);
-
-/* This checks if the data bearing packet SKB (usually sk->sk_send_head)
- * should be put on the wire right now.
- */
-static __inline__ int tcp_snd_test(struct sock *sk,
-                                   struct sk_buff *skb,
-                                   unsigned cur_mss, int nonagle)
-{
-        struct tcp_sock *tp = tcp_sk(sk);
-        int pkts = tcp_skb_pcount(skb);
-
-        if (!pkts) {
-                tcp_set_skb_tso_segs(sk, skb);
-                pkts = tcp_skb_pcount(skb);
-        }
-
-        /*      RFC 1122 - section 4.2.3.4
-         *
-         *      We must queue if
-         *
-         *      a) The right edge of this frame exceeds the window
-         *      b) There are packets in flight and we have a small segment
-         *         [SWS avoidance and Nagle algorithm]
-         *         (part of SWS is done on packetization)
-         *         Minshall version sounds: there are no _small_
-         *         segments in flight. (tcp_nagle_check)
-         *      c) We have too many packets 'in flight'
-         *
-         *      Don't use the nagle rule for urgent data (or
-         *      for the final FIN -DaveM).
-         *
-         *      Also, Nagle rule does not apply to frames, which
-         *      sit in the middle of queue (they have no chances
-         *      to get new data) and if room at tail of skb is
-         *      not enough to save something seriously (<32 for now).
-         */
-
-        /* Don't be strict about the congestion window for the
-         * final FIN frame.  -DaveM
-         */
-        return (((nonagle&TCP_NAGLE_PUSH) || tp->urg_mode
-                 || !tcp_nagle_check(tp, skb, cur_mss, nonagle)) &&
-                (((tcp_packets_in_flight(tp) + (pkts-1)) < tp->snd_cwnd) ||
-                 (TCP_SKB_CB(skb)->flags & TCPCB_FLAG_FIN)) &&
-                !after(TCP_SKB_CB(skb)->end_seq, tp->snd_una + tp->snd_wnd));
-}
-
 static __inline__ void tcp_check_probe_timer(struct sock *sk, struct tcp_sock *tp)
 {
         if (!tp->packets_out && !tp->pending)
                 tcp_reset_xmit_timer(sk, TCP_TIME_PROBE0, tp->rto);
 }
 
-static __inline__ int tcp_skb_is_last(const struct sock *sk, 
-                                      const struct sk_buff *skb)
-{
-        return skb->next == (struct sk_buff *)&sk->sk_write_queue;
-}
-
-/* Push out any pending frames which were held back due to
- * TCP_CORK or attempt at coalescing tiny packets.
- * The socket must be locked by the caller.
- */
-static __inline__ void __tcp_push_pending_frames(struct sock *sk,
-                                                 struct tcp_sock *tp,
-                                                 unsigned cur_mss,
-                                                 int nonagle)
-{
-        struct sk_buff *skb = sk->sk_send_head;
-
-        if (skb) {
-                if (!tcp_skb_is_last(sk, skb))
-                        nonagle = TCP_NAGLE_PUSH;
-                if (!tcp_snd_test(sk, skb, cur_mss, nonagle) ||
-                    tcp_write_xmit(sk, nonagle))
-                        tcp_check_probe_timer(sk, tp);
-        }
-        tcp_cwnd_validate(sk, tp);
-}
-
 static __inline__ void tcp_push_pending_frames(struct sock *sk,
                                                struct tcp_sock *tp)
 {
         __tcp_push_pending_frames(sk, tp, tcp_current_mss(sk, 1), tp->nonagle);
 }
 
-static __inline__ int tcp_may_send_now(struct sock *sk, struct tcp_sock *tp)
-{
-        struct sk_buff *skb = sk->sk_send_head;
-
-        return (skb &&
-                tcp_snd_test(sk, skb, tcp_current_mss(sk, 1),
-                             tcp_skb_is_last(sk, skb) ? TCP_NAGLE_PUSH : tp->nonagle));
-}
-
 static __inline__ void tcp_init_wl(struct tcp_sock *tp, u32 ack, u32 seq)
 {
         tp->snd_wl1 = seq;