ipv6: AF_INET6 link address family

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

diff --git a/include/net/tcp.h b/include/net/tcp.h
index 3e4b33e36602caade361654d0561a65b3fba2224..e36c874c7fb16c47138428d4ecc106800c5fe48f 100644 (file)
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -224,7 +224,7 @@ extern int sysctl_tcp_fack;
 extern int sysctl_tcp_reordering;
 extern int sysctl_tcp_ecn;
 extern int sysctl_tcp_dsack;
-extern int sysctl_tcp_mem[3];
+extern long sysctl_tcp_mem[3];
 extern int sysctl_tcp_wmem[3];
 extern int sysctl_tcp_rmem[3];
 extern int sysctl_tcp_app_win;
@@ -247,7 +247,7 @@ extern int sysctl_tcp_cookie_size;
 extern int sysctl_tcp_thin_linear_timeouts;
 extern int sysctl_tcp_thin_dupack;
 
-extern atomic_t tcp_memory_allocated;
+extern atomic_long_t tcp_memory_allocated;
 extern struct percpu_counter tcp_sockets_allocated;
 extern int tcp_memory_pressure;
 
@@ -280,7 +280,7 @@ static inline bool tcp_too_many_orphans(struct sock *sk, int shift)
        }
 
        if (sk->sk_wmem_queued > SOCK_MIN_SNDBUF &&
-           atomic_read(&tcp_memory_allocated) > sysctl_tcp_mem[2])
+           atomic_long_read(&tcp_memory_allocated) > sysctl_tcp_mem[2])
                return true;
        return false;
 }
@@ -346,8 +346,6 @@ static inline void tcp_dec_quickack_mode(struct sock *sk,
        }
 }
 
-extern void tcp_enter_quickack_mode(struct sock *sk);
-
 #define        TCP_ECN_OK              1
 #define        TCP_ECN_QUEUE_CWR       2
 #define        TCP_ECN_DEMAND_CWR      4
@@ -803,6 +801,15 @@ static inline __u32 tcp_current_ssthresh(const struct sock *sk)
 /* Use define here intentionally to get WARN_ON location shown at the caller */
 #define tcp_verify_left_out(tp)        WARN_ON(tcp_left_out(tp) > tp->packets_out)
 
+/*
+ * Convert RFC 3390 larger initial window into an equivalent number of packets.
+ * This is based on the numbers specified in RFC 5681, 3.1.
+ */
+static inline u32 rfc3390_bytes_to_packets(const u32 smss)
+{
+       return smss <= 1095 ? 4 : (smss > 2190 ? 2 : 3);
+}
+
 extern void tcp_enter_cwr(struct sock *sk, const int set_ssthresh);
 extern __u32 tcp_init_cwnd(struct tcp_sock *tp, struct dst_entry *dst);