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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Shuah Khan , Simon Horman , netdev@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH net-next v2 2/2] selftests: net: add an amt test for UDP_SEGMENT through the relay Date: Sun, 4 Oct 2026 17:00:06 +0300 Message-ID: <20261004140006.93394-1-omar@blockcast.net> X-Mailer: git-send-email 2.50.1 In-Reply-To: <179106416321.434549.5874142465613964174@kernel.org> References: <20261002212458.34247-1-omar@blockcast.net> <20261002212458.34247-3-omar@blockcast.net> <179106416321.434549.5874142465613964174@kernel.org> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Sat, Oct 3, 2026, Sashiko wrote: > What happens here if one of the sniffers has already died? Agreed, that is a real hole. A sniffer that finishes normally always prints its report and exits 0, so v3 waits for each capture on its own and fails the case if either one exits nonzero. A tx-on UDP_SEGMENT case in which no GSO skb reaches the driver now fails instead of skipping. > Should GRXD be passed to check_err, or should the commit message be > reworded to match what is actually checked? Fixed: v3 checks amtg rx_dropped, and the changelog mentions the plain datagram cases. > The busywait return value is also ignored here and in run_burst(): Fixed in run_burst(): a helper that never prints READY fails the case. wait_tunnel() still ignores it on purpose, since a missed READY only costs one of the 40 tries, and probe.out is now removed before each try, so a stale READY cannot match. > Can this multiplication wrap before the total > MAX_DGRAM check runs? Fixed: main() now rejects sizes that would overflow the buffer or the seen[] array, for both send and recv. > Should that be reported as a failure instead, given that this is the > data path the test is meant to cover? Yes. A tunnel that never comes up is now a FAIL, not a SKIP. pw-bot: cr