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Miller" , Jakub Kicinski , Paolo Abeni , Andrew Lunn , Shuah Khan Cc: Simon Horman , Jakub Sitnicki , Daniel Zahka , Willem de Bruijn , netdev@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, Wei Wang Content-Type: text/plain; charset="UTF-8" _data_basic_send() and _data_basic_send_netkit_psp_assoc() currently only verify unidirectional data transmission from the test socket to psp_responder. As a result, they do not exercise the receive path for PSP-encrypted TCP data segments arriving at the test socket (such as packets redirected across a netkit interface associated via dev-assoc, which relies on SKB_EXT_PSP surviving packet scrubbing). Use the existing "data echo" command in psp_responder to verify that the test socket can also receive PSP-encrypted data from the peer in both _data_basic_send() and _data_basic_send_netkit_psp_assoc(). Signed-off-by: Wei Wang --- tools/testing/selftests/drivers/net/psp.py | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/tools/testing/selftests/drivers/net/psp.py b/tools/testing/selftests/drivers/net/psp.py index 473500901879..c114d2245135 100755 --- a/tools/testing/selftests/drivers/net/psp.py +++ b/tools/testing/selftests/drivers/net/psp.py @@ -120,6 +120,26 @@ def _check_data_rx(cfg, exp_len): ksft_eq(read_len, exp_len) +def _recv_careful(s, target, timeout=2): + """Read exactly target bytes, tolerating short reads""" + data = b'' + end = time.monotonic() + timeout + while time.monotonic() < end: + try: + data += s.recv(target - len(data), socket.MSG_DONTWAIT) + if len(data) == target: + return data + except BlockingIOError: + time.sleep(0.001) + raise KsftFailEx(f"short read, got {len(data)} of {target} bytes") + + +def _req_echo(cfg, s): + """Ask the peer to echo, and check the reply arrives intact""" + _send_with_ack(cfg, b'data echo\0') + ksft_eq(_recv_careful(s, 5), b'echo\0') + + def _check_data_outq(s, exp_len, force_wait=False): outq = 0 for _ in range(10): @@ -478,6 +498,7 @@ def _data_basic_send(cfg, version, ipver): data_len = _send_careful(cfg, s, 100) _check_data_rx(cfg, data_len) + _req_echo(cfg, s) _close_psp_conn(cfg, s) @@ -726,6 +747,7 @@ def _data_basic_send_netkit_psp_assoc(cfg, version, ipver): data_len = _send_careful(cfg, sock, 100) _check_data_rx(cfg, data_len) + _req_echo(cfg, sock) _close_psp_conn(cfg, sock) -- 2.56.0.455.g6c5a503b38-goog