On Fri, Sep 18, 2020 at 02:10:42PM +0200, Nicolas Rybowski wrote:
> +
> +BPF_CALL_1(bpf_mptcp_sock, struct sock *, sk)
> +{
> + if (sk_fullsock(sk) && sk->sk_protocol == IPPROTO_TCP &&
> sk_is_mptcp(sk)) {
> + struct mptcp_subflow_context *mptcp_sfc = mptcp_subflow_ctx(sk);
Could
In order to precisely identify the parent MPTCP connection of a subflow,
it is required to access the mptcp_sock's token which uniquely identify a
MPTCP connection.
This patch adds a new structure 'bpf_mptcp_sock' exposing the 'token' field
of the 'mptcp_sock' extracted from a subflow's 'tcp_sock'
