1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * TCP Vegas congestion control interface 4*4882a593Smuzhiyun */ 5*4882a593Smuzhiyun #ifndef __TCP_VEGAS_H 6*4882a593Smuzhiyun #define __TCP_VEGAS_H 1 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun /* Vegas variables */ 9*4882a593Smuzhiyun struct vegas { 10*4882a593Smuzhiyun u32 beg_snd_nxt; /* right edge during last RTT */ 11*4882a593Smuzhiyun u32 beg_snd_una; /* left edge during last RTT */ 12*4882a593Smuzhiyun u32 beg_snd_cwnd; /* saves the size of the cwnd */ 13*4882a593Smuzhiyun u8 doing_vegas_now;/* if true, do vegas for this RTT */ 14*4882a593Smuzhiyun u16 cntRTT; /* # of RTTs measured within last RTT */ 15*4882a593Smuzhiyun u32 minRTT; /* min of RTTs measured within last RTT (in usec) */ 16*4882a593Smuzhiyun u32 baseRTT; /* the min of all Vegas RTT measurements seen (in usec) */ 17*4882a593Smuzhiyun }; 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun void tcp_vegas_init(struct sock *sk); 20*4882a593Smuzhiyun void tcp_vegas_state(struct sock *sk, u8 ca_state); 21*4882a593Smuzhiyun void tcp_vegas_pkts_acked(struct sock *sk, const struct ack_sample *sample); 22*4882a593Smuzhiyun void tcp_vegas_cwnd_event(struct sock *sk, enum tcp_ca_event event); 23*4882a593Smuzhiyun size_t tcp_vegas_get_info(struct sock *sk, u32 ext, int *attr, 24*4882a593Smuzhiyun union tcp_cc_info *info); 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun #endif /* __TCP_VEGAS_H */ 27