Add a basic test suite for drivers that support PSP. Also, add a PSP implementation in the netdevsim driver.
The netdevsim implementation does encapsulation and decapsulation of PSP packets, but no crypto.
The tests cover the basic usage of the uapi, and demonstrate key exchange and connection setup. The tests and netdevsim support IPv4 and IPv6. Here is an example run on a system with a CX7 NIC.
TAP version 13 1..28 ok 1 psp.data_basic_send_v0_ip4 ok 2 psp.data_basic_send_v0_ip6 ok 3 psp.data_basic_send_v1_ip4 ok 4 psp.data_basic_send_v1_ip6 ok 5 psp.data_basic_send_v2_ip4 # SKIP ('PSP version not supported', 'hdr0-aes-gmac-128') ok 6 psp.data_basic_send_v2_ip6 # SKIP ('PSP version not supported', 'hdr0-aes-gmac-128') ok 7 psp.data_basic_send_v3_ip4 # SKIP ('PSP version not supported', 'hdr0-aes-gmac-256') ok 8 psp.data_basic_send_v3_ip6 # SKIP ('PSP version not supported', 'hdr0-aes-gmac-256') ok 9 psp.data_mss_adjust_ip4 ok 10 psp.data_mss_adjust_ip6 ok 11 psp.dev_list_devices ok 12 psp.dev_get_device ok 13 psp.dev_get_device_bad ok 14 psp.dev_rotate ok 15 psp.dev_rotate_spi ok 16 psp.assoc_basic ok 17 psp.assoc_bad_dev ok 18 psp.assoc_sk_only_conn ok 19 psp.assoc_sk_only_mismatch ok 20 psp.assoc_sk_only_mismatch_tx ok 21 psp.assoc_sk_only_unconn ok 22 psp.assoc_version_mismatch ok 23 psp.assoc_twice ok 24 psp.data_send_bad_key ok 25 psp.data_send_disconnect ok 26 psp.data_stale_key ok 27 psp.removal_device_rx # XFAIL Test only works on netdevsim ok 28 psp.removal_device_bi # XFAIL Test only works on netdevsim # Totals: pass:22 fail:0 xfail:2 xpass:0 skip:4 error:0 # # Responder logs (0): # STDERR: # Set PSP enable on device 1 to 0x3 # Set PSP enable on device 1 to 0x0
CHANGES: v2: - fix pylint warnings - insert CONFIG_INET_PSP in alphebetical order - use branch to skip all tests - fix compilation error when CONFIG_INET_PSP is not set
v1: https://lore.kernel.org/netdev/20250924194959.2845473-1-daniel.zahka@gmail.c...
Jakub Kicinski (8): netdevsim: a basic test PSP implementation selftests: drv-net: base device access API test selftests: drv-net: add PSP responder selftests: drv-net: psp: add basic data transfer and key rotation tests selftests: drv-net: psp: add association tests selftests: drv-net: psp: add connection breaking tests selftests: drv-net: psp: add test for auto-adjusting TCP MSS selftests: drv-net: psp: add tests for destroying devices
drivers/net/netdevsim/Makefile | 4 + drivers/net/netdevsim/netdev.c | 55 +- drivers/net/netdevsim/netdevsim.h | 33 + drivers/net/netdevsim/psp.c | 234 +++++++ net/core/skbuff.c | 1 + .../testing/selftests/drivers/net/.gitignore | 1 + tools/testing/selftests/drivers/net/Makefile | 10 + tools/testing/selftests/drivers/net/config | 1 + .../drivers/net/hw/lib/py/__init__.py | 4 +- .../selftests/drivers/net/lib/py/__init__.py | 4 +- .../selftests/drivers/net/lib/py/env.py | 5 + tools/testing/selftests/drivers/net/psp.py | 593 ++++++++++++++++++ .../selftests/drivers/net/psp_responder.c | 483 ++++++++++++++ .../testing/selftests/net/lib/py/__init__.py | 2 +- tools/testing/selftests/net/lib/py/ksft.py | 10 + tools/testing/selftests/net/lib/py/ynl.py | 5 + 16 files changed, 1432 insertions(+), 13 deletions(-) create mode 100644 drivers/net/netdevsim/psp.c create mode 100755 tools/testing/selftests/drivers/net/psp.py create mode 100644 tools/testing/selftests/drivers/net/psp_responder.c