1 files changed, 13 insertions, 2 deletions

diff --git a/include/net/tcp.h b/include/net/tcp.h
index 9e88dcd5f134..5f4eb5c79689 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -27,6 +27,7 @@
 #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>
@@ -217,6 +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;
@@ -224,6 +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;
@@ -292,6 +295,8 @@ 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);
 
@@ -627,7 +632,7 @@ 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);
@@ -662,7 +667,7 @@ 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)
@@ -816,6 +821,12 @@ 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