On 4/15/26 4:02 AM, Martin KaFai Lau wrote:
On Tue, Apr 14, 2026 at 11:17:39AM +0200, Paolo Abeni wrote:
On 4/14/26 11:08 AM, Paolo Abeni wrote:
On 4/14/26 7:50 AM, Kuniyuki Iwashima wrote:
On Fri, Apr 10, 2026 at 6:32 PM Jiayuan Chen <[email protected]> wrote:
Add read_tcpext_snmp() helper to network_helpers which reads a
TcpExt SNMP counter via nstat, and use it in the tcp_custom_syncookie
test to verify that LINUX_MIB_SYNCOOKIESRECV is incremented and
LINUX_MIB_SYNCOOKIESFAILED stays unchanged across a successful
BPF custom syncookie validation.
The delta is captured between start_server() and accept(), which
covers the full SYN/ACK/cookie-check path for one connection.
Signed-off-by: Jiayuan Chen <[email protected]>
---
tools/testing/selftests/bpf/network_helpers.c | 22 +++++++++++++++++++
tools/testing/selftests/bpf/network_helpers.h | 1 +
.../bpf/prog_tests/tcp_custom_syncookie.c | 20 +++++++++++++++++
As you touch bpf selftest helper files, please rebase on bpf-next
to avoid possible conflicts and tag bpf-next in the Subject.
To hopefully minimize the conflicts handling I'm going to apply patch
1/2 to net-next. Please resubmit patch 2/2 to bpf-next after the
relevant net core reach there.
Uhmm... the original feature went through the bpf tree, so I guess both
patches could/should via bpf-next. Hopefully conflict into the tcp code
should be minimal.
I think it is best to land both patches together. It seems the 7.1 pull-request
is out. We can take it to bpf-next/net after the merge window and then follow
by a pull-request for the net-next tree as usual.
Thanks, Martin. I will rebase and send it, targeting bpf-next, after the
merge window ends.
