-/* TCP Westwood structure */
- struct {
- __u32 bw_ns_est; /* first bandwidth estimation..not too smoothed 8) */
- __u32 bw_est; /* bandwidth estimate */
- __u32 rtt_win_sx; /* here starts a new evaluation... */
- __u32 bk;
- __u32 snd_una; /* used for evaluating the number of acked bytes */
- __u32 cumul_ack;
- __u32 accounted;
- __u32 rtt;
- __u32 rtt_min; /* minimum observed RTT */
- } westwood;
-
-/* Vegas variables */
- struct {
- __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) */
- } vegas;
-
- /* BI TCP Parameters */
- struct {
- __u32 cnt; /* increase cwnd by 1 after this number of ACKs */
- __u32 last_max_cwnd; /* last maximium snd_cwnd */
- __u32 last_cwnd; /* the last snd_cwnd */
- __u32 last_stamp; /* time when updated last_cwnd */
- } bictcp;
+ /* Pluggable TCP congestion control hook */
+ struct tcp_congestion_ops *ca_ops;
+ u32 ca_priv[16];
+#define TCP_CA_PRIV_SIZE (16*sizeof(u32))