[PATCH 0/1] bpf: introduce new helper udp_flow_src_port

[Farid Zakaria <farid.m.zakaria@gmail.com>]

This is a submission to expose a new eBPF helper method
to allow access to udp_flow_src_port -- which is useful
when doing any Foo Over UDP network tunneling.

I hope this change adheres to the submission guidelines.
I've included a test and verified it passes:

./test_progs -t udp_flow_src_port
#31 udp_flow_src_port:OK
Summary: 1/0 PASSED, 0 FAILED

* shoutout to https://github.com/g2p/vido/blob/master/vido
which made testing the kernel + change super easy *
(This is my first contribution)

Farid Zakaria (1):
  bpf: introduce new helper udp_flow_src_port

 include/uapi/linux/bpf.h                      | 21 +++++++--
 net/core/filter.c                             | 20 ++++++++
 tools/include/uapi/linux/bpf.h                | 21 +++++++--
 tools/testing/selftests/bpf/bpf_helpers.h     |  2 +
 .../bpf/prog_tests/udp_flow_src_port.c        | 28 +++++++++++
 .../bpf/progs/test_udp_flow_src_port_kern.c   | 47 +++++++++++++++++++
 6 files changed, 131 insertions(+), 8 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/prog_tests/udp_flow_src_port.c
 create mode 100644 tools/testing/selftests/bpf/progs/test_udp_flow_src_port_kern.c

-- 
2.21.0