tcp: add tcpi_segs_in and tcpi_segs_out to tcp_info

[sagit-ice-cold/kernel_xiaomi_msm8998.git] / include / linux / tcp.h

diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 0caa3a2..f021202 100644 (file)
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -145,11 +145,24 @@ struct tcp_sock {
  *     read the code and the spec side by side (and laugh ...)
  *     See RFC793 and RFC1122. The RFC writes these in capitals.
  */
+       u64     bytes_received; /* RFC4898 tcpEStatsAppHCThruOctetsReceived
+                                * sum(delta(rcv_nxt)), or how many bytes
+                                * were acked.
+                                */
+       u32     segs_in;        /* RFC4898 tcpEStatsPerfSegsIn
+                                * total number of segments in.
+                                */
        u32     rcv_nxt;        /* What we want to receive next         */
        u32     copied_seq;     /* Head of yet unread data              */
        u32     rcv_wup;        /* rcv_nxt on last window update sent   */
        u32     snd_nxt;        /* Next sequence we send                */
-
+       u32     segs_out;       /* RFC4898 tcpEStatsPerfSegsOut
+                                * The total number of segments sent.
+                                */
+       u64     bytes_acked;    /* RFC4898 tcpEStatsAppHCThruOctetsAcked
+                                * sum(delta(snd_una)), or how many bytes
+                                * were acked.
+                                */
        u32     snd_una;        /* First byte we want an ack for        */
        u32     snd_sml;        /* Last byte of the most recently transmitted small packet */
        u32     rcv_tstamp;     /* timestamp of last received ACK (for keepalives) */
@@ -191,6 +204,7 @@ struct tcp_sock {
                syn_fastopen:1, /* SYN includes Fast Open option */
                syn_fastopen_exp:1,/* SYN includes Fast Open exp. option */
                syn_data_acked:1,/* data in SYN is acked by SYN-ACK */
+               save_syn:1,     /* Save headers of SYN packet */
                is_cwnd_limited:1;/* forward progress limited by snd_cwnd? */
        u32     tlp_high_seq;   /* snd_nxt at the time of TLP retransmit. */
 
@@ -318,6 +332,7 @@ struct tcp_sock {
         * socket. Used to retransmit SYNACKs etc.
         */
        struct request_sock *fastopen_rsk;
+       u32     *saved_syn;
 };
 
 enum tsq_flags {
@@ -385,4 +400,10 @@ static inline int fastopen_init_queue(struct sock *sk, int backlog)
        return 0;
 }
 
+static inline void tcp_saved_syn_free(struct tcp_sock *tp)
+{
+       kfree(tp->saved_syn);
+       tp->saved_syn = NULL;
+}
+
 #endif /* _LINUX_TCP_H */