diff options
| author | Kuniyuki Iwashima <kuniyu@google.com> | 2025-09-27 21:29:48 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-09-29 18:41:39 -0700 |
| commit | 21f7fb31aef878df52c4575f3b71cbbea935d48a (patch) | |
| tree | 680e9c8401ecc25cefb44805400dc53058daad99 | |
| parent | 5920f154e144c1e62b581454397e0f88fbd3b58d (diff) | |
selftest: packetdrill: Import opt34/*-trigger-rst.pkt.
This imports the non-experimental version of opt34/*-trigger-rst.pkt.
| accept() | SYN data |
-----------------------------------+----------+----------+
listener-closed-trigger-rst.pkt | no | unread |
unread-data-closed-trigger-rst.pkt | yes | unread |
Both files test that close()ing a SYN_RECV socket with unread SYN data
triggers RST.
The files are renamed to have the common prefix, trigger-rst.
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250927213022.1850048-11-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 files changed, 44 insertions, 0 deletions
diff --git a/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_trigger-rst-listener-closed.pkt b/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_trigger-rst-listener-closed.pkt new file mode 100644 index 000000000000..e82e06da44c9 --- /dev/null +++ b/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_trigger-rst-listener-closed.pkt @@ -0,0 +1,21 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Close a listener socket with pending TFO child. +// This will trigger RST pkt to go out. + +`./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 <mss 1460,sackOK,nop,nop,FO TFO_COOKIE,nop,nop> + +0 > S. 0:0(0) ack 11 <mss 1460,nop,nop,sackOK> + +// RST pkt is generated for each not-yet-accepted TFO child. +// inet_csk_listen_stop() -> inet_child_forget() -> tcp_disconnect() +// -> tcp_need_reset() is true for SYN_RECV + +0 close(3) = 0 + +0 > R. 1:1(0) ack 11 diff --git a/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_trigger-rst-unread-data-closed.pkt b/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_trigger-rst-unread-data-closed.pkt new file mode 100644 index 000000000000..09fb63f78a0e --- /dev/null +++ b/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_trigger-rst-unread-data-closed.pkt @@ -0,0 +1,23 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Close a TFO socket with unread data. +// This will trigger a RST pkt. + +`./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 <mss 1460,sackOK,nop,nop,FO TFO_COOKIE,nop,nop> + +0 > S. 0:0(0) ack 11 <mss 1460,nop,nop,sackOK> + + +0 accept(3, ..., ...) = 4 + +0 %{ assert (tcpi_options & TCPI_OPT_SYN_DATA) != 0, tcpi_options }% + +0 %{ assert tcpi_state == TCP_SYN_RECV, tcpi_state }% + +// data_was_unread == true in __tcp_close() + +0 close(4) = 0 + +0 > R. 1:1(0) ack 11 |