lkml.org 
[lkml]   [2020]   [Aug]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH bpf-next 0/3] bpf: add MPTCP subflow support
Date
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.

Nicolas Rybowski (3):
bpf: expose is_mptcp flag to bpf_tcp_sock
mptcp: attach subflow socket to parent cgroup
bpf: add 'bpf_mptcp_sock' structure and helper

include/linux/bpf.h | 33 ++++++++++++++++
include/uapi/linux/bpf.h | 14 +++++++
kernel/bpf/verifier.c | 30 ++++++++++++++
net/core/filter.c | 13 +++++-
net/mptcp/Makefile | 2 +
net/mptcp/bpf.c | 72 ++++++++++++++++++++++++++++++++++
net/mptcp/subflow.c | 27 +++++++++++++
scripts/bpf_helpers_doc.py | 2 +
tools/include/uapi/linux/bpf.h | 14 +++++++
9 files changed, 206 insertions(+), 1 deletion(-)
create mode 100644 net/mptcp/bpf.c

--
2.28.0

\
 
 \ /
  Last update: 2020-08-21 17:19    [W:0.056 / U:1.392 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site