diff options
Diffstat (limited to 'tools/testing/selftests/net/packetdrill/tcp_fastopen_server_reset-close-with-unread-data.pkt')
| -rw-r--r-- | tools/testing/selftests/net/packetdrill/tcp_fastopen_server_reset-close-with-unread-data.pkt | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_reset-close-with-unread-data.pkt b/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_reset-close-with-unread-data.pkt new file mode 100644 index 000000000000..548a87701b5d --- /dev/null +++ b/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_reset-close-with-unread-data.pkt @@ -0,0 +1,32 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Send a RST to a TFO socket after it is accepted. +// +// The socket will change to TCP_CLOSE state with pending data so +// write() will fail. Pending data can be still be read and close() +// won't trigger RST if data is not read +// +// 565b7b2d2e63 ("tcp: do not send reset to already closed sockets") +// https://lore.kernel.org/netdev/4C1A2502.1030502@openvz.org/ + +`./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 }% + +// tcp_done() sets sk->sk_state to TCP_CLOSE and clears tp->fastopen_rsk + +0 < R. 11:11(0) win 32792 + +0 %{ assert tcpi_state == TCP_CLOSE, tcpi_state }% + + +0 write(4, ..., 100) = -1 ECONNRESET(Connection reset by peer) + +0 close(4) = 0 |