From: Stanislav Fomichev <stfomichev@gmail.com>
To: Jakub Kicinski <kuba@kernel.org>
Cc: davem@davemloft.net, netdev@vger.kernel.org, edumazet@google.com,
pabeni@redhat.com, andrew+netdev@lunn.ch, horms@kernel.org,
jdamato@fastly.com, petrm@nvidia.com
Subject: Re: [PATCH net-next v2 5/7] selftests: drv-net: add a way to wait for a local process
Date: Thu, 20 Feb 2025 09:29:54 -0800 [thread overview]
Message-ID: <Z7dmkkgJx0deq3_g@mini-arch> (raw)
In-Reply-To: <20250219234956.520599-6-kuba@kernel.org>
On 02/19, Jakub Kicinski wrote:
> We use wait_port_listen() extensively to wait for a process
> we spawned to be ready. Not all processes will open listening
> sockets. Add a method of explicitly waiting for a child to
> be ready. Pass a FD to the spawned process and wait for it
> to write a message to us. FD number is passed via KSFT_READY_FD
> env variable.
>
> Similarly use KSFT_WAIT_FD to let the child process for a sign
> that we are done and child should exit. Sending a signal to
> a child with shell=True can get tricky.
>
> Make use of this method in the queues test to make it less flaky.
>
> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
next prev parent reply other threads:[~2025-02-20 17:29 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-19 23:49 [PATCH net-next v2 0/7] selftests: drv-net: improve the queue test for XSK Jakub Kicinski
2025-02-19 23:49 ` [PATCH net-next v2 1/7] selftests: drv-net: add a warning for bkg + shell + terminate Jakub Kicinski
2025-02-20 17:27 ` Stanislav Fomichev
2025-02-20 17:48 ` Joe Damato
2025-02-20 19:31 ` Joe Damato
2025-02-20 21:10 ` Jakub Kicinski
2025-02-20 22:53 ` Joe Damato
2025-02-19 23:49 ` [PATCH net-next v2 2/7] selftests: drv-net: use cfg.rpath() in netlink xsk attr test Jakub Kicinski
2025-02-19 23:49 ` [PATCH net-next v2 3/7] selftests: drv-net: add missing new line in xdp_helper Jakub Kicinski
2025-02-20 7:26 ` Kurt Kanzenbach
2025-02-20 17:48 ` Joe Damato
2025-02-19 23:49 ` [PATCH net-next v2 4/7] selftests: drv-net: probe for AF_XDP sockets more explicitly Jakub Kicinski
2025-02-20 17:27 ` Stanislav Fomichev
2025-02-20 18:16 ` Joe Damato
2025-02-19 23:49 ` [PATCH net-next v2 5/7] selftests: drv-net: add a way to wait for a local process Jakub Kicinski
2025-02-20 17:29 ` Stanislav Fomichev [this message]
2025-02-20 19:28 ` Joe Damato
2025-02-19 23:49 ` [PATCH net-next v2 6/7] selftests: drv-net: improve the use of ksft helpers in XSK queue test Jakub Kicinski
2025-02-20 7:31 ` Kurt Kanzenbach
2025-02-19 23:49 ` [PATCH net-next v2 7/7] selftests: drv-net: rename queues check_xdp to check_xsk Jakub Kicinski
2025-02-20 19:35 ` [PATCH net-next v2 0/7] selftests: drv-net: improve the queue test for XSK Joe Damato
2025-02-21 2:17 ` patchwork-bot+netdevbpf
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