net/ipv4/tcp_vegas.h

   1 /*
   2  * TCP Vegas congestion control interface
   3  */
   4 #ifndef __TCP_VEGAS_H
   5 #define __TCP_VEGAS_H 1
   6
   7 /* Vegas variables */
   8 struct vegas {
   9         u32     beg_snd_nxt;    /* right edge during last RTT */
  10         u32     beg_snd_una;    /* left edge  during last RTT */
  11         u32     beg_snd_cwnd;   /* saves the size of the cwnd */
  12         u8      doing_vegas_now;/* if true, do vegas for this RTT */
  13         u16     cntRTT;         /* # of RTTs measured within last RTT */
  14         u32     minRTT;         /* min of RTTs measured within last RTT (in usec) */
  15         u32     baseRTT;        /* the min of all Vegas RTT measurements seen (in usec) */
  16 };
  17
  18 extern void tcp_vegas_init(struct sock *sk);
  19 extern void tcp_vegas_state(struct sock *sk, u8 ca_state);
  20 extern void tcp_vegas_pkts_acked(struct sock *sk, u32 cnt, s32 rtt_us);
  21 extern void tcp_vegas_cwnd_event(struct sock *sk, enum tcp_ca_event event);
  22 extern void tcp_vegas_get_info(struct sock *sk, u32 ext, struct sk_buff *skb);
  23
  24 #endif  /* __TCP_VEGAS_H */