On Fri, Aug 21, 2020 at 05:15:38PM +0200, Nicolas Rybowski wrote: > Previously it was not possible to make a distinction between plain TCP > sockets and MPTCP subflow sockets on the BPF_PROG_TYPE_SOCK_OPS hook. > > This patch series now enables a fine control of subflow sockets. In its > current state, it allows to put different sockopt on each subflow from a > same MPTCP connection (socket mark, TCP congestion algorithm, ...) using > BPF programs. > > It should also be the basis of exposing MPTCP-specific fields through BPF. Looks fine, but I'd like to see the full picture a bit better. What's the point of just 'token' ? What can be done with it? What are you thinking to add later? Also selftest for new feature is mandatory.
