From c6df7b2361d721f40610df5c832ea0fa73e918b1 Mon Sep 17 00:00:00 2001 From: Dmitry Safonov Date: Fri, 15 Dec 2023 02:36:24 +0000 Subject: selftests/net: Add TCP-AO RST test Check that both active and passive reset works and correctly sign segments with TCP-AO or don't send RSTs if not possible to sign. A listening socket with backlog = 0 gets one connection in accept queue, another in syn queue. Once the server/listener socket is forcibly closed, client sockets aren't connected to anything. In regular situation they would receive RST on any segment, but with TCP-AO as there's no listener, no AO-key and unknown ISNs, no RST should be sent. And "passive" reset, where RST is sent on reply for some segment (tcp_v{4,6}_send_reset()) - there use TCP_REPAIR to corrupt SEQ numbers, which later results in TCP-AO signed RST, which will be verified and client socket will get EPIPE. No TCPAORequired/TCPAOBad segments are expected during these tests. Sample of the output: > # ./rst_ipv4 > 1..15 > # 1462[lib/setup.c:254] rand seed 1686611171 > TAP version 13 > ok 1 servered 1000 bytes > ok 2 Verified established tcp connection > ok 3 sk[0] = 7, connection was reset > ok 4 sk[1] = 8, connection was reset > ok 5 sk[2] = 9 > ok 6 MKT counters are good on server > ok 7 Verified established tcp connection > ok 8 client connection broken post-seq-adjust > ok 9 client connection was reset > ok 10 No segments without AO sign (server) > ok 11 Signed AO segments (server): 0 => 30 > ok 12 No segments with bad AO sign (server) > ok 13 No segments without AO sign (client) > ok 14 Signed AO segments (client): 0 => 30 > ok 15 No segments with bad AO sign (client) > # Totals: pass:15 fail:0 xfail:0 xpass:0 skip:0 error:0 Signed-off-by: Dmitry Safonov Signed-off-by: David S. Miller --- tools/testing/selftests/net/tcp_ao/lib/sock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools/testing/selftests/net/tcp_ao/lib/sock.c') diff --git a/tools/testing/selftests/net/tcp_ao/lib/sock.c b/tools/testing/selftests/net/tcp_ao/lib/sock.c index 7f3c31b7d997..c75d82885a2e 100644 --- a/tools/testing/selftests/net/tcp_ao/lib/sock.c +++ b/tools/testing/selftests/net/tcp_ao/lib/sock.c @@ -566,7 +566,7 @@ ssize_t test_client_loop(int sk, char *buf, size_t buf_sz, got = recv(sk, msg + bytes, sizeof(msg) - bytes, 0); if (got <= 0) - test_error("recv(): %zd", got); + return i; bytes += got; } while (bytes < sent); if (bytes > sent) -- cgit