[RFC PATCH net-next 0/2] netdevsim: add TLS device offload emulation and test

[Jiayuan Chen]

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                   | 418 +++++++++++++++
 .../drivers/net/netdevsim/.gitignore          |   2 +
 .../selftests/drivers/net/netdevsim/Makefile  |   7 +
 .../selftests/drivers/net/netdevsim/tls.sh    | 271 ++++++++++
 .../drivers/net/netdevsim/tls_offload.c       | 498 ++++++++++++++++++
 9 files changed, 1241 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

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2.43.0