Initial commit for TCP ROCCET source code.

tcp_roccet_struct.h

@@ -0,0 +1,52 @@
+// Include Guard
+#ifndef TCP_ROCCET_STRUCT
+#define TCP_ROCCET_STRUCT
+
+#include <linux/math64.h>
+
+struct AckRate {
+  u16 last_rate;
+  u32 last_rate_time;
+  u16 curr_rate;
+  u16 cnt;
+};
+
+struct BandwidthLimitDetect {
+  u32 sum_cwnd;   /* sum of cwnd during time interval */
+  u32 sum_acked;  /* sum of received acks during time interval */
+  u32 next_check; /* end/upper bound of time interval */
+};
+
+struct TimedRTT {
+  u32 time;
+  u32 rtt;
+};
+
+/* BIC TCP Parameters */
+struct bictcp {
+  u32 cnt;              /* increase cwnd by 1 after ACKs */
+  u32 last_max_cwnd;    /* last maximum snd_cwnd */
+  u32 last_cwnd;        /* the last snd_cwnd */
+  u32 last_time;        /* time when updated last_cwnd */
+  u32 bic_origin_point; /* origin point of bic function */
+  u32 bic_K;            /* time to origin point
+                           from the beginning of the current epoch */
+  u32 delay_min;        /* min delay (usec) */
+  u32 epoch_start;      /* beginning of an epoch */
+  u32 ack_cnt;          /* number of acks */
+  u32 tcp_cwnd;         /* estimated tcp cwnd */
+
+  u32 curr_rtt; /* the minimum rtt of current round */
+
+  // ROCCETv2 specific
+  u32 roccet_last_event_time_us;      /* The last time ROCCETv2 was triggered */
+  u32 curr_min_rtt;                   /* The current observed minRTT */
+  struct TimedRTT curr_min_rtt_timed; /* The current observed minRTT with the
+                             timestamp when it was observed */
+  u32 curr_srRTT;          /* The srRTT calculated based on the latest ACK */
+  struct AckRate ack_rate; /* The last and the current ACK rate */
+  struct BandwidthLimitDetect bw_limit;
+  u32 last_rtt; /* Used for jitter calculation */
+};
+
+#endif /* TCP_ROCCET_STRUCT */