--- include/linux/tcp.h

+++ include/linux/tcp.h

@@ -378,6 +378,10 @@ struct tcp_sock {

u32 snd_cwnd_clamp; /* Do not allow snd_cwnd to grow above this */

u32 snd_cwnd_used;

u32 snd_cwnd_stamp;

+ u32 prior_cwnd; /* Congestion window at start of Recovery. */

+ u32 prr_delivered; /* Number of newly delivered packets to

+ * receiver in Recovery. */

+ u32 prr_out; /* Total number of pkts sent during Recovery. */

u32 rcv_wnd; /* Current receiver window */

u32 write_seq; /* Tail(+1) of data held in tcp send buffer */