[mirror_ubuntu-artful-kernel.git] / net / ipv4 / tcp_vegas.h

/*
 * 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 */
Commit	Line	Data
7752237e SH	1	/*
	2	* TCP Vegas congestion control interface
	3	*/
	4	#ifndef __TCP_VEGAS_H
	5	#define __TCP_VEGAS_H 1
	6
	7	/* Vegas variables */
	8	struct vegas {
	9	u32 beg_snd_nxt; /* right edge during last RTT */
	10	u32 beg_snd_una; /* left edge during last RTT */
	11	u32 beg_snd_cwnd; /* saves the size of the cwnd */
	12	u8 doing_vegas_now;/* if true, do vegas for this RTT */
	13	u16 cntRTT; /* # of RTTs measured within last RTT */
	14	u32 minRTT; /* min of RTTs measured within last RTT (in usec) */
	15	u32 baseRTT; /* the min of all Vegas RTT measurements seen (in usec) */
	16	};
	17
7e58487b JP	18	void tcp_vegas_init(struct sock *sk);
7e58487b JP	19	void tcp_vegas_state(struct sock *sk, u8 ca_state);
756ee172	20	void tcp_vegas_pkts_acked(struct sock sk, const struct ack_sample sample);
7e58487b	21	void tcp_vegas_cwnd_event(struct sock *sk, enum tcp_ca_event event);
64f40ff5 ED	22	size_t tcp_vegas_get_info(struct sock sk, u32 ext, int attr,
64f40ff5 ED	23	union tcp_cc_info *info);
7752237e SH	24
7752237e SH	25	#endif /* __TCP_VEGAS_H */