From: Jiayuan Chen <jiayuan.chen@linux.dev>
To: netdev@vger.kernel.org
Cc: Jiayuan Chen <jiayuan.chen@linux.dev>,
Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Shuah Khan <shuah@kernel.org>,
linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org
Subject: [PATCH net-next v1 0/2] netdevsim: add TLS device offload emulation and test
Date: Tue, 1 Sep 2026 23:48:55 +0800 [thread overview]
Message-ID: <20260901154914.11637-1-jiayuan.chen@linux.dev> (raw)
It helped me find
commit b17cf742eaad ("tls: device: fix out-of-bounds write in tls_append_frag()").
So I think it is worth sending a formal patchset.
The kTLS device offload path in net/tls/tls_device.c has no test
coverage upstream -- selftests/net/tls.c is software only, and the
offload code needs a driver that implements it.
So teach netdevsim to fake it. Patch 1 implements tlsdev_ops and
advertises the TLS features, patch 2 adds a selftest.
No crypto is done: TX puts the plaintext record on the wire, RX just
sets skb->decrypted. That only works netdevsim to netdevsim, but it
covers record assembly and the offload lifecycle. Real ciphertext, and
more on top of it, can come later.
Jiayuan Chen (2):
netdevsim: add TLS device offload emulation
selftests: netdevsim: add a kTLS device offload test
drivers/net/Kconfig | 1 +
drivers/net/netdevsim/Makefile | 4 +
drivers/net/netdevsim/netdev.c | 5 +
drivers/net/netdevsim/netdevsim.h | 35 ++
drivers/net/netdevsim/tls.c | 482 +++++++++++++++++
.../drivers/net/netdevsim/.gitignore | 2 +
.../selftests/drivers/net/netdevsim/Makefile | 7 +
.../selftests/drivers/net/netdevsim/config | 2 +
.../selftests/drivers/net/netdevsim/tls.sh | 334 ++++++++++++
.../drivers/net/netdevsim/tls_offload.c | 505 ++++++++++++++++++
10 files changed, 1377 insertions(+)
create mode 100644 drivers/net/netdevsim/tls.c
create mode 100644 tools/testing/selftests/drivers/net/netdevsim/.gitignore
create mode 100755 tools/testing/selftests/drivers/net/netdevsim/tls.sh
create mode 100644 tools/testing/selftests/drivers/net/netdevsim/tls_offload.c
--
2.43.0
next reply other threads:[~2026-09-01 15:49 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-01 15:48 Jiayuan Chen [this message]
2026-09-01 15:48 ` [PATCH net-next v1 1/2] netdevsim: add TLS device offload emulation Jiayuan Chen
2026-09-01 23:38 ` Daniel Zahka
2026-09-04 22:25 ` netdev-bot+sashiko
2026-09-01 15:48 ` [PATCH net-next v1 2/2] selftests: netdevsim: add a kTLS device offload test Jiayuan Chen
2026-09-04 22:25 ` netdev-bot+sashiko
2026-09-03 22:59 ` [PATCH net-next v1 0/2] netdevsim: add TLS device offload emulation and test Jakub Kicinski
2026-09-04 2:09 ` Jiayuan Chen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260901154914.11637-1-jiayuan.chen@linux.dev \
--to=jiayuan.chen@linux.dev \
--cc=andrew+netdev@lunn.ch \
--cc=davem@davemloft.net \
--cc=edumazet@google.com \
--cc=kuba@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-kselftest@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=pabeni@redhat.com \
--cc=shuah@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.