From: Lawrence Brakmo
Date: Tue, 13 Jun 2017 11:00:04 -0700
> +SEC("sockops")
> +int bpf_clamp(struct __sk_buff *skb)
> +{
> + struct bpf_socket_ops *skops = (struct bpf_socket_ops *) skb;
> + char fmt1[] = "BPF command: %d\n";
> + char fmt2[] = " Returning %d\n";
> + int op;
> +
Sample BPF program, tcp_clamp_kern.c, to demostrate the use
of setting the sndcwnd clamp. This program assumes that if the
first 5.5 bytes of the host's IPv6 addresses are the same, then
the hosts are in the same datacenter and sets sndcwnd clamp to
100 packets, SYN and SYN-ACK RTOs to 10ms and sen
