17752237eSStephen Hemminger /* 27752237eSStephen Hemminger * TCP Vegas congestion control interface 37752237eSStephen Hemminger */ 47752237eSStephen Hemminger #ifndef __TCP_VEGAS_H 57752237eSStephen Hemminger #define __TCP_VEGAS_H 1 67752237eSStephen Hemminger 77752237eSStephen Hemminger /* Vegas variables */ 87752237eSStephen Hemminger struct vegas { 97752237eSStephen Hemminger u32 beg_snd_nxt; /* right edge during last RTT */ 107752237eSStephen Hemminger u32 beg_snd_una; /* left edge during last RTT */ 117752237eSStephen Hemminger u32 beg_snd_cwnd; /* saves the size of the cwnd */ 127752237eSStephen Hemminger u8 doing_vegas_now;/* if true, do vegas for this RTT */ 137752237eSStephen Hemminger u16 cntRTT; /* # of RTTs measured within last RTT */ 147752237eSStephen Hemminger u32 minRTT; /* min of RTTs measured within last RTT (in usec) */ 157752237eSStephen Hemminger u32 baseRTT; /* the min of all Vegas RTT measurements seen (in usec) */ 167752237eSStephen Hemminger }; 177752237eSStephen Hemminger 187e58487bSJoe Perches void tcp_vegas_init(struct sock *sk); 197e58487bSJoe Perches void tcp_vegas_state(struct sock *sk, u8 ca_state); 207e58487bSJoe Perches void tcp_vegas_pkts_acked(struct sock *sk, u32 cnt, s32 rtt_us); 217e58487bSJoe Perches void tcp_vegas_cwnd_event(struct sock *sk, enum tcp_ca_event event); 227e58487bSJoe Perches void tcp_vegas_get_info(struct sock *sk, u32 ext, struct sk_buff *skb); 237752237eSStephen Hemminger 247752237eSStephen Hemminger #endif /* __TCP_VEGAS_H */ 25