1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * TCP Vegas congestion control interface 4 */ 5 #ifndef __TCP_VEGAS_H 6 #define __TCP_VEGAS_H 1 7 8 /* Vegas variables */ 9 struct vegas { 10 u32 beg_snd_nxt; /* right edge during last RTT */ 11 u32 beg_snd_una; /* left edge during last RTT */ 12 u32 beg_snd_cwnd; /* saves the size of the cwnd */ 13 u8 doing_vegas_now;/* if true, do vegas for this RTT */ 14 u16 cntRTT; /* # of RTTs measured within last RTT */ 15 u32 minRTT; /* min of RTTs measured within last RTT (in usec) */ 16 u32 baseRTT; /* the min of all Vegas RTT measurements seen (in usec) */ 17 }; 18 19 void tcp_vegas_init(struct sock *sk); 20 void tcp_vegas_state(struct sock *sk, u8 ca_state); 21 void tcp_vegas_pkts_acked(struct sock *sk, const struct ack_sample *sample); 22 void tcp_vegas_cwnd_event(struct sock *sk, enum tcp_ca_event event); 23 size_t tcp_vegas_get_info(struct sock *sk, u32 ext, int *attr, 24 union tcp_cc_info *info); 25 26 #endif /* __TCP_VEGAS_H */ 27