Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / net / ipv4 / tcp_vegas.h

diff --git a/kernel/net/ipv4/tcp_vegas.h b/kernel/net/ipv4/tcp_vegas.h
new file mode 100644 (file)
index 0000000..ef9da53
--- /dev/null
+++ b/kernel/net/ipv4/tcp_vegas.h
@@ -0,0 +1,25 @@
+/*
+ * 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 */