/* SPDX-License-Identifier: GPL-2.0 */
/*
 * TCP Vegas congestion control interface
 */
#ifndef __TCP_VEGAS_H
#define __TCP_VEGAS_H 1

/* Vegas variables */
struct vegas {
        u32     beg_snd_nxt;    /* right edge during last RTT */
        u32     beg_snd_una;    /* left edge  during last RTT */
        u32     beg_snd_cwnd;   /* saves the size of the cwnd */
        u8      doing_vegas_now;/* if true, do vegas for this RTT */
        u16     cntRTT;         /* # of RTTs measured within last RTT */
        u32     minRTT;         /* min of RTTs measured within last RTT (in usec) */
        u32     baseRTT;        /* the min of all Vegas RTT measurements seen (in usec) */
};

void tcp_vegas_init(struct sock *sk);
void tcp_vegas_state(struct sock *sk, u8 ca_state);
void tcp_vegas_pkts_acked(struct sock *sk, const struct ack_sample *sample);
void tcp_vegas_cwnd_event(struct sock *sk, enum tcp_ca_event event);
size_t tcp_vegas_get_info(struct sock *sk, u32 ext, int *attr,
                          union tcp_cc_info *info);

#endif  /* __TCP_VEGAS_H */