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authorStephen Hemminger <shemminger@linux-foundation.org>2007-04-23 22:28:23 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-25 22:29:46 -0700
commit7752237e9f07b316f81aebdc43f0d7c9a4ba0acf (patch)
tree6ec702ab8a81b123947cfcfae4b10cea0c27dc15 /net/ipv4/tcp_vegas.h
parent164891aadf1721fca4dce473bb0e0998181537c6 (diff)
[TCP] TCP YEAH: Use vegas dont copy it.
Rather than using a copy of vegas code, the YEAH code should just have it exported so there is common code. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_vegas.h')
-rw-r--r--net/ipv4/tcp_vegas.h24
1 files changed, 24 insertions, 0 deletions
diff --git a/net/ipv4/tcp_vegas.h b/net/ipv4/tcp_vegas.h
new file mode 100644
index 000000000000..502fa8183634
--- /dev/null
+++ b/net/ipv4/tcp_vegas.h
@@ -0,0 +1,24 @@
+/*
+ * 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, ktime_t last);
+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 */