From: Jakub Kicinski <kuba@kernel.org>
To: atwellwea@gmail.com
Cc: netdev@vger.kernel.org, davem@davemloft.net, pabeni@redhat.com,
edumazet@google.com, ncardwell@google.com,
linux-kernel@vger.kernel.org, linux-api@vger.kernel.org,
linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org,
linux-trace-kernel@vger.kernel.org, mptcp@lists.linux.dev,
dsahern@kernel.org, horms@kernel.org, kuniyu@google.com,
andrew+netdev@lunn.ch, willemdebruijn.kernel@gmail.com,
jasowang@redhat.com, skhan@linuxfoundation.org, corbet@lwn.net,
matttbe@kernel.org, martineau@kernel.org, geliang@kernel.org,
rostedt@goodmis.org, mhiramat@kernel.org,
mathieu.desnoyers@efficios.com, 0x7f454c46@gmail.com
Subject: Re: [PATCH net-next v2 12/14] tun/selftests: add RX truesize injection for TCP window tests
Date: Sat, 14 Mar 2026 18:18:39 -0700 [thread overview]
Message-ID: <20260314181839.1c3da7c3@kernel.org> (raw)
In-Reply-To: <20260314201348.1786972-13-atwellwea@gmail.com>
On Sat, 14 Mar 2026 14:13:46 -0600 atwellwea@gmail.com wrote:
> Add a test-only TUN ioctl that inflates RX skb->truesize, plus the
> packetdrill-side helper needed to drive that ioctl through packetdrill's
> own TUN queue file descriptor.
>
> Use that plumbing to cover the receive-window regressions where
> scaling_ratio drifts after advertisement, alongside the baseline too-big
> packetdrill cases that exercise the same sender-visible rwnd accounting
> from the non-injected path.
You missed adding the tun program to the Makefile.
tcp-rcv-neg-window-truesize-pkt
tcp-rcv-toobig-default-truesize-pkt
tcp-rcv-wnd-shrink-allowed-truesize-pkt
Fail with:
sh: line 1: ../tun: No such file or directory
tcp_rcv_*_truesize.pkt:*: error executing `../tun --set-rx-truesize tun0 6553\
6` command: non-zero status 127
https://netdev.bots.linux.dev/contest.html?pw-n=0&branch=net-next-2026-03-15--00-00&pw-n=0&pass=0
next prev parent reply other threads:[~2026-03-15 1:18 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-14 20:13 [PATCH net-next v2 00/14] tcp: preserve receive-window accounting across ratio drift atwellwea
2026-03-14 20:13 ` [PATCH net-next v2 01/14] tcp: factor receive-memory accounting helpers atwellwea
2026-03-14 20:13 ` [PATCH net-next v2 02/14] tcp: snapshot advertise-time scaling for rcv_wnd atwellwea
2026-03-14 20:13 ` [PATCH net-next v2 03/14] tcp: refresh rcv_wnd snapshots at TCP write sites atwellwea
2026-03-14 20:13 ` [PATCH net-next v2 04/14] tcp: snapshot the maximum advertised receive window atwellwea
2026-03-14 20:13 ` [PATCH net-next v2 05/14] tcp: grow rcvbuf to back scaled-window quantization slack atwellwea
2026-03-16 11:04 ` Paolo Abeni
2026-03-16 11:24 ` Paolo Abeni
2026-03-16 11:31 ` Paolo Abeni
2026-03-14 20:13 ` [PATCH net-next v2 06/14] tcp: regrow rcvbuf when scaling_ratio drops after advertisement atwellwea
2026-03-14 20:13 ` [PATCH net-next v2 07/14] tcp: honor the maximum advertised window after live retraction atwellwea
2026-03-16 11:44 ` Paolo Abeni
2026-03-14 20:13 ` [PATCH net-next v2 08/14] tcp: extend TCP_REPAIR_WINDOW for live and max-window snapshots atwellwea
2026-03-14 20:13 ` [PATCH net-next v2 09/14] mptcp: refresh TCP receive-window snapshots on subflows atwellwea
2026-03-14 20:13 ` [PATCH net-next v2 10/14] tcp: expose rmem and backlog in tcp and mptcp rcvbuf_grow tracepoints atwellwea
2026-03-14 20:13 ` [PATCH net-next v2 11/14] selftests: tcp_ao: cover legacy, v1, and retracted repair windows atwellwea
2026-03-14 20:13 ` [PATCH net-next v2 12/14] tun/selftests: add RX truesize injection for TCP window tests atwellwea
2026-03-15 1:18 ` Jakub Kicinski [this message]
2026-03-14 20:13 ` [PATCH net-next v2 13/14] netdevsim: add peer RX truesize support for selftests atwellwea
2026-03-15 1:18 ` Jakub Kicinski
2026-03-14 20:13 ` [PATCH net-next v2 14/14] netdevsim: release pinned PSP ext on drop paths atwellwea
2026-03-15 1:19 ` [PATCH net-next v2 00/14] tcp: preserve receive-window accounting across ratio drift Jakub Kicinski
2026-03-16 11:09 ` Paolo Abeni
[not found] ` <CAN=sVvyNpkyok_bt8eQSmqc4f7g7QoZBUmRmNRLoFz1HasEzMA@mail.gmail.com>
2026-03-16 17:47 ` Paolo Abeni
2026-03-16 18:03 ` Wesley Atwell
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