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Diffstat (limited to 'net/ipv4/tcp_vegas.h')
-rw-r--r--net/ipv4/tcp_vegas.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/net/ipv4/tcp_vegas.h b/net/ipv4/tcp_vegas.h
new file mode 100644
index 000000000..ef9da5306
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+++ b/net/ipv4/tcp_vegas.h
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+/*
+ * 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, u32 cnt, s32 rtt_us);
+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 */