tcp: prefer packet timing to TS-ECR for RTT

[firefly-linux-kernel-4.4.55.git] / include / net / tcp.h

diff --git a/include/net/tcp.h b/include/net/tcp.h
index 5bba80fbd1d9d92738d115cbc870bf0612cb0305..c5868471abae93b1d64573e52a2932f9aaad20ec 100644 (file)
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -61,9 +61,6 @@ extern void tcp_time_wait(struct sock *sk, int state, int timeo);
  */
 #define MAX_TCP_WINDOW         32767U
 
-/* Offer an initial receive window of 10 mss. */
-#define TCP_DEFAULT_INIT_RCVWND        10
-
 /* Minimal accepted MSS. It is (60+60+8) - (20+20). */
 #define TCP_MIN_MSS            88U
 
@@ -594,7 +591,6 @@ extern void tcp_initialize_rcv_mss(struct sock *sk);
 extern int tcp_mtu_to_mss(struct sock *sk, int pmtu);
 extern int tcp_mss_to_mtu(struct sock *sk, int mss);
 extern void tcp_mtup_init(struct sock *sk);
-extern void tcp_valid_rtt_meas(struct sock *sk, u32 seq_rtt);
 extern void tcp_init_buffer_space(struct sock *sk);
 
 static inline void tcp_bound_rto(const struct sock *sk)
@@ -1047,6 +1043,8 @@ static inline void tcp_sack_reset(struct tcp_options_received *rx_opt)
        rx_opt->num_sacks = 0;
 }
 
+extern u32 tcp_default_init_rwnd(u32 mss);
+
 /* Determine a window scaling and initial window to offer. */
 extern void tcp_select_initial_window(int __space, __u32 mss,
                                      __u32 *rcv_wnd, __u32 *window_clamp,
@@ -1095,15 +1093,6 @@ static inline void tcp_openreq_init(struct request_sock *req,
        ireq->loc_port = tcp_hdr(skb)->dest;
 }
 
-/* Compute time elapsed between SYNACK and the ACK completing 3WHS */
-static inline void tcp_synack_rtt_meas(struct sock *sk,
-                                      struct request_sock *req)
-{
-       if (tcp_rsk(req)->snt_synack)
-               tcp_valid_rtt_meas(sk,
-                   tcp_time_stamp - tcp_rsk(req)->snt_synack);
-}
-
 extern void tcp_enter_memory_pressure(struct sock *sk);
 
 static inline int keepalive_intvl_when(const struct tcp_sock *tp)
@@ -1193,7 +1182,6 @@ static inline void tcp_mib_init(struct net *net)
 static inline void tcp_clear_retrans_hints_partial(struct tcp_sock *tp)
 {
        tp->lost_skb_hint = NULL;
-       tp->scoreboard_skb_hint = NULL;
 }
 
 static inline void tcp_clear_all_retrans_hints(struct tcp_sock *tp)
@@ -1284,11 +1272,13 @@ static inline struct tcp_md5sig_key *tcp_md5_do_lookup(struct sock *sk,
 #define tcp_twsk_md5_key(twsk) NULL
 #endif
 
-extern struct tcp_md5sig_pool __percpu *tcp_alloc_md5sig_pool(struct sock *);
-extern void tcp_free_md5sig_pool(void);
+extern bool tcp_alloc_md5sig_pool(void);
 
 extern struct tcp_md5sig_pool  *tcp_get_md5sig_pool(void);
-extern void tcp_put_md5sig_pool(void);
+static inline void tcp_put_md5sig_pool(void)
+{
+       local_bh_enable();
+}
 
 extern int tcp_md5_hash_header(struct tcp_md5sig_pool *, const struct tcphdr *);
 extern int tcp_md5_hash_skb_data(struct tcp_md5sig_pool *, const struct sk_buff *,
@@ -1319,9 +1309,9 @@ void tcp_fastopen_cookie_gen(__be32 addr, struct tcp_fastopen_cookie *foc);
 
 /* Fastopen key context */
 struct tcp_fastopen_context {
-       struct crypto_cipher __rcu      *tfm;
-       __u8                            key[TCP_FASTOPEN_KEY_LENGTH];
-       struct rcu_head                 rcu;
+       struct crypto_cipher    *tfm;
+       __u8                    key[TCP_FASTOPEN_KEY_LENGTH];
+       struct rcu_head         rcu;
 };
 
 /* write queue abstraction */
@@ -1540,15 +1530,14 @@ extern struct request_sock_ops tcp6_request_sock_ops;
 
 extern void tcp_v4_destroy_sock(struct sock *sk);
 
-extern int tcp_v4_gso_send_check(struct sk_buff *skb);
 extern struct sk_buff *tcp_tso_segment(struct sk_buff *skb,
                                       netdev_features_t features);
 extern struct sk_buff **tcp_gro_receive(struct sk_buff **head,
                                        struct sk_buff *skb);
-extern struct sk_buff **tcp4_gro_receive(struct sk_buff **head,
-                                        struct sk_buff *skb);
 extern int tcp_gro_complete(struct sk_buff *skb);
-extern int tcp4_gro_complete(struct sk_buff *skb);
+
+extern void __tcp_v4_send_check(struct sk_buff *skb, __be32 saddr,
+                               __be32 daddr);
 
 #ifdef CONFIG_PROC_FS
 extern int tcp4_proc_init(void);
@@ -1583,6 +1572,8 @@ struct tcp_request_sock_ops {
 #endif
 };
 
+extern int tcpv4_offload_init(void);
+
 extern void tcp_v4_init(void);
 extern void tcp_init(void);