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 */