This imports basic TFO server tests from google/packetdrill. The repository has two versions of tests for most scenarios; one uses the non-experimental option (34), and the other uses the experimental option (255) with 0xF989. This only imports the following tests of the non-experimental version placed in [0]. I will add a specific test for the experimental option handling later. | TFO | Cookie | Payload | ---------------------------+-----+--------+---------+ basic-rw.pkt | yes | yes | yes | basic-zero-payload.pkt | yes | yes | no | basic-cookie-not-reqd.pkt | yes | no | yes | basic-non-tfo-listener.pkt | no | yes | yes | pure-syn-data.pkt | yes | no | yes | The original pure-syn-data.pkt missed setsockopt(TCP_FASTOPEN) and did not test TFO server in some scenarios unintentionally, so setsockopt() is added where needed. In addition, non-TFO scenario is stripped as it is covered by basic-non-tfo-listener.pkt. Also, I added basic- prefix. Link: https://github.com/google/packetdrill/tree/bfc96251310f/gtests/net/tcp/fastopen/server/opt34 #[0] Signed-off-by: Kuniyuki Iwashima --- ..._fastopen_server_basic-cookie-not-reqd.pkt | 32 ++++++++++++ ...fastopen_server_basic-non-tfo-listener.pkt | 26 ++++++++++ ...cp_fastopen_server_basic-pure-syn-data.pkt | 50 +++++++++++++++++++ .../tcp_fastopen_server_basic-rw.pkt | 23 +++++++++ ...tcp_fastopen_server_basic-zero-payload.pkt | 26 ++++++++++ 5 files changed, 157 insertions(+) create mode 100644 tools/testing/selftests/net/packetdrill/tcp_fastopen_server_basic-cookie-not-reqd.pkt create mode 100644 tools/testing/selftests/net/packetdrill/tcp_fastopen_server_basic-non-tfo-listener.pkt create mode 100644 tools/testing/selftests/net/packetdrill/tcp_fastopen_server_basic-pure-syn-data.pkt create mode 100644 tools/testing/selftests/net/packetdrill/tcp_fastopen_server_basic-rw.pkt create mode 100644 tools/testing/selftests/net/packetdrill/tcp_fastopen_server_basic-zero-payload.pkt diff --git a/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_basic-cookie-not-reqd.pkt b/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_basic-cookie-not-reqd.pkt new file mode 100644 index 000000000000..32aff9bc4052 --- /dev/null +++ b/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_basic-cookie-not-reqd.pkt @@ -0,0 +1,32 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Basic TFO server test +// +// Test TFO_SERVER_COOKIE_NOT_REQD flag on receiving +// SYN with data but without Fast Open cookie option. + +`./defaults.sh + ./set_sysctls.py /proc/sys/net/ipv4/tcp_fastopen=0x202` + + 0 socket(..., SOCK_STREAM|SOCK_NONBLOCK, IPPROTO_TCP) = 3 + +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 + +0 bind(3, ..., ...) = 0 + +0 listen(3, 1) = 0 + +0 setsockopt(3, SOL_TCP, TCP_FASTOPEN, [1], 4) = 0 + +// Since TFO_SERVER_COOKIE_NOT_REQD, a TFO socket will be created with +// the data accepted. + +0 < S 0:1000(1000) win 32792 + +0 > S. 0:0(0) ack 1001 + +0 accept(3, ..., ...) = 4 + +0 %{ assert (tcpi_options & TCPI_OPT_SYN_DATA) != 0, tcpi_options }% + +0 read(4, ..., 1024) = 1000 + +// Data After SYN will be accepted too. + +0 < . 1001:2001(1000) ack 1 win 5840 + +0 > . 1:1(0) ack 2001 + +// Should change the implementation later to set the SYN flag as well. + +0 read(4, ..., 1024) = 1000 + +0 write(4, ..., 1000) = 1000 + +0 > P. 1:1001(1000) ack 2001 diff --git a/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_basic-non-tfo-listener.pkt b/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_basic-non-tfo-listener.pkt new file mode 100644 index 000000000000..4a00e0d994f2 --- /dev/null +++ b/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_basic-non-tfo-listener.pkt @@ -0,0 +1,26 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Basic TFO server test +// +// Server w/o TCP_FASTOPEN socket option + +`./defaults.sh` + + 0 socket(..., SOCK_STREAM|SOCK_NONBLOCK, IPPROTO_TCP) = 3 + +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 + +0 bind(3, ..., ...) = 0 + +0 listen(3, 1) = 0 + + +0 < S 0:10(10) win 32792 + +// Data is ignored since TCP_FASTOPEN is not set on the listener + +0 > S. 0:0(0) ack 1 + + +0 accept(3, ..., ...) = -1 EAGAIN (Resource temporarily unavailable) + +// The above should block until ack comes in below. + +0 < . 1:31(30) ack 1 win 5840 + +0 accept(3, ..., ...) = 4 + + +0 %{ assert (tcpi_options & TCPI_OPT_SYN_DATA) == 0, tcpi_options }% + +0 read(4, ..., 512) = 30 diff --git a/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_basic-pure-syn-data.pkt b/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_basic-pure-syn-data.pkt new file mode 100644 index 000000000000..345ed26ff7f8 --- /dev/null +++ b/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_basic-pure-syn-data.pkt @@ -0,0 +1,50 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Basic TFO server test +// +// Test that TFO-enabled server would not respond SYN-ACK with any TFO option +// when receiving a pure SYN-data. It should respond a pure SYN-ack. + +`./defaults.sh` + + 0 socket(..., SOCK_STREAM|SOCK_NONBLOCK, IPPROTO_TCP) = 3 + +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 + +0 bind(3, ..., ...) = 0 + +0 listen(3, 1) = 0 + +0 setsockopt(3, SOL_TCP, TCP_FASTOPEN, [1], 4) = 0 + + +0 < S 999000:999040(40) win 32792 + +0 > S. 1234:1234(0) ack 999001 + +0 < . 1:1(0) ack 1 win 100 + +0 accept(3, ..., ...) = 4 + +0 %{ assert (tcpi_options & TCPI_OPT_SYN_DATA) == 0, tcpi_options }% + +0 close(3) = 0 + +// Test ECN-setup SYN with ECN disabled because this has happened in reality + +0 socket(..., SOCK_STREAM|SOCK_NONBLOCK, IPPROTO_TCP) = 3 + +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 + +0 bind(3, ..., ...) = 0 + +0 listen(3, 1) = 0 + +0 setsockopt(3, SOL_TCP, TCP_FASTOPEN, [1], 4) = 0 + + +0 < SEW 999000:999040(40) win 32792 + +0 > S. 1234:1234(0) ack 999001 + +0 < . 1:1(0) ack 1 win 100 + +0 accept(3, ..., ...) = 4 + +0 %{ assert (tcpi_options & TCPI_OPT_SYN_DATA) == 0, tcpi_options }% + +0 close(3) = 0 + +// Test ECN-setup SYN w/ ECN enabled + +0 `sysctl -q net.ipv4.tcp_ecn=2` + +0 socket(..., SOCK_STREAM|SOCK_NONBLOCK, IPPROTO_TCP) = 3 + +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 + +0 bind(3, ..., ...) = 0 + +0 listen(3, 1) = 0 + +0 setsockopt(3, SOL_TCP, TCP_FASTOPEN, [1], 4) = 0 + + +0 < SEW 999000:999040(40) win 32792 + +0 > SE. 1234:1234(0) ack 999001 + +0 < . 1:1(0) ack 1 win 100 + +0 accept(3, ..., ...) = 4 + +0 %{ assert (tcpi_options & TCPI_OPT_SYN_DATA) == 0, tcpi_options }% + +0 close(3) = 0 diff --git a/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_basic-rw.pkt b/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_basic-rw.pkt new file mode 100644 index 000000000000..98e6f84497cd --- /dev/null +++ b/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_basic-rw.pkt @@ -0,0 +1,23 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Basic TFO server test +// +// Test TFO server with SYN that has TFO cookie and data. + +`./defaults.sh` + + 0 socket(..., SOCK_STREAM|SOCK_NONBLOCK, IPPROTO_TCP) = 3 + +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 + +0 bind(3, ..., ...) = 0 + +0 listen(3, 1) = 0 + +0 setsockopt(3, SOL_TCP, TCP_FASTOPEN, [1], 4) = 0 + + +0 < S 0:10(10) win 32792 + +0 > S. 0:0(0) ack 11 + + +0 accept(3, ..., ...) = 4 + +0 %{ assert (tcpi_options & TCPI_OPT_SYN_DATA) != 0, tcpi_options }% + + +0 read(4, ..., 512) = 10 + +0 write(4, ..., 100) = 100 + +0 > P. 1:101(100) ack 11 diff --git a/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_basic-zero-payload.pkt b/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_basic-zero-payload.pkt new file mode 100644 index 000000000000..95b1047ffdd5 --- /dev/null +++ b/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_basic-zero-payload.pkt @@ -0,0 +1,26 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Basic TFO server test +// +// Test zero-payload packet w/ valid TFO cookie - a TFO socket will +// still be created and accepted but read() will not return until a +// later pkt with 10 byte. + +`./defaults.sh` + + 0 socket(..., SOCK_STREAM|SOCK_NONBLOCK, IPPROTO_TCP) = 3 + +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 + +0 bind(3, ..., ...) = 0 + +0 listen(3, 1) = 0 + +0 setsockopt(3, SOL_TCP, TCP_FASTOPEN, [1], 4) = 0 + + +0 < S 0:0(0) win 32792 + +0 > S. 0:0(0) ack 1 + +0 accept(3, ..., ...) = 4 + +0 %{ assert (tcpi_options & TCPI_OPT_SYN_DATA) == 0, tcpi_options }% + +// A TFO socket is created and is writable. + +0 write(4, ..., 100) = 100 + +0 > P. 1:101(100) ack 1 + +0...0.300 read(4, ..., 512) = 10 + +.3 < P. 1:11(10) ack 1 win 5840 -- 2.51.0.536.g15c5d4f767-goog