mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-21 08:53:41 +00:00
30cfd0baf0
This patch changes the API for the callback that is done after an ACK is
received. It solves a couple of issues:
* Some congestion controls want higher resolution value of RTT
(controlled by TCP_CONG_RTT_SAMPLE flag). These don't really want a ktime, but
all compute a RTT in microseconds.
* Other congestion control could use RTT at jiffies resolution.
To keep API consistent the units should be the same for both cases, just the
resolution should change.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
25 lines
902 B
C
25 lines
902 B
C
/*
|
|
* 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) */
|
|
};
|
|
|
|
extern void tcp_vegas_init(struct sock *sk);
|
|
extern void tcp_vegas_state(struct sock *sk, u8 ca_state);
|
|
extern void tcp_vegas_pkts_acked(struct sock *sk, u32 cnt, s32 rtt_us);
|
|
extern void tcp_vegas_cwnd_event(struct sock *sk, enum tcp_ca_event event);
|
|
extern void tcp_vegas_get_info(struct sock *sk, u32 ext, struct sk_buff *skb);
|
|
|
|
#endif /* __TCP_VEGAS_H */
|