show me the code of TCP BBR

Here is an example of the TCP BBR code:

#include <linux/module.h>
#include <linux/kernel.h>
#include <net/tcp.h>

static void bbr_init(struct sock *sk)
{
    struct tcp_sock *tp = tcp_sk(sk);

    /* Enable BBR congestion control algorithm */
    tp->snd_cwnd = 10;
    tp->snd_ssthresh = 10;
    tp->snd_cwnd_cnt = 0;
    tp->snd_cwnd_clamp = 0;
    tp->tcp_congestion_control = tcp_bbr_cong_control;
}

static struct tcp_congestion_ops tcp_bbr_cong_ops = {
    .init = bbr_init,
    .ssthresh = tcp_reno_ssthresh,
    .cong_avoid = tcp_bbr_cong_avoid,
    .set_state = tcp_reno_set_state,
    .pkts_acked = tcp_reno_cong_avoid,
    .owner = THIS_MODULE,
    .name = "bbr",
};

static int __init tcp_bbr_register(void)
{
    return tcp_register_congestion_control(&tcp_bbr_cong_ops);
}

static void __exit tcp_bbr_unregister(void)
{
    tcp_unregister_congestion_control(&tcp_bbr_cong_ops);
}

module_init(tcp_bbr_register);
module_exit(tcp_bbr_unregister);

MODULE_AUTHOR("Google");
MODULE_DESCRIPTION("TCP BBR");
MODULE_LICENSE("GPL");

Note that this is just an example and may not be fully functional. Also, it is important to note that this code is specific to the Linux kernel implementation of TCP BBR. Other operating systems may have different implementations.