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// SPDX-License-Identifier: GPL-2.0
// Test tx timestamping for server-side (IPv4).
`./defaults.sh
`
// Initialize connection
0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
+0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
+0 bind(3, ..., ...) = 0
+0 listen(3, 1) = 0
+0 < S 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 10>
+0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 8>
+.01 < . 1:1(0) ack 1 win 514
+0 accept(3, ..., ...) = 4
+0 setsockopt(4, SOL_SOCKET, SO_TIMESTAMPING,
[SOF_TIMESTAMPING_TX_SCHED | SOF_TIMESTAMPING_TX_SOFTWARE |
SOF_TIMESTAMPING_TX_ACK | SOF_TIMESTAMPING_SOFTWARE |
SOF_TIMESTAMPING_OPT_ID], 4) = 0
// Write two 2KB chunks.
// setsockopt(..., [SOF_TIMESTAMPING_SOFTWARE | SOF_TIMESTAMPING_OPT_ID], ...)
// is called after when SYN is acked. So, we expect the last byte of the first
// and the second chunks to have timestamp keys of 1999 (i.e., 2000 - 1) and
// 3999 (i.e., 4000 - 1) respectively.
+0 write(4, ..., 2000) = 2000
+0 write(4, ..., 2000) = 2000
+0 > P. 1:2001(2000) ack 1
+0 > P. 2001:4001(2000) ack 1
+.01 < . 1:1(0) ack 2001 win 514
+.01 < . 1:1(0) ack 4001 win 514
// Make sure that internal TCP timestamps are not overwritten and we have sane
// RTT measurement.
+0 %{
assert 5000 <= tcpi_rtt <= 20000, 'srtt=%d us' % tcpi_rtt
}%
// SCM_TSTAMP_SCHED for the first chunk should be received almost immediately
// after write at t=10ms.
+0 recvmsg(4, {msg_name(...)=...,
msg_iov(1)=[{...,0}],
msg_flags=MSG_ERRQUEUE|MSG_TRUNC,
msg_control=[
{cmsg_level=SOL_SOCKET,
cmsg_type=SCM_TIMESTAMPING,
cmsg_data={scm_sec=0,scm_nsec=10000000}},
{cmsg_level=CMSG_LEVEL_IP,
cmsg_type=CMSG_TYPE_RECVERR,
cmsg_data={ee_errno=ENOMSG,
ee_origin=SO_EE_ORIGIN_TIMESTAMPING,
ee_type=0,
ee_code=0,
ee_info=SCM_TSTAMP_SCHED,
ee_data=1999}}
]}, MSG_ERRQUEUE) = 0
// SCM_TSTAMP_SND for the first chunk should be received almost immediately
// after write at t=10ms.
+0 recvmsg(4, {msg_name(...)=...,
msg_iov(1)=[{...,0}],
msg_flags=MSG_ERRQUEUE|MSG_TRUNC,
msg_control=[
{cmsg_level=SOL_SOCKET,
cmsg_type=SCM_TIMESTAMPING,
cmsg_data={scm_sec=0,scm_nsec=10000000}},
{cmsg_level=CMSG_LEVEL_IP,
cmsg_type=CMSG_TYPE_RECVERR,
cmsg_data={ee_errno=ENOMSG,
ee_origin=SO_EE_ORIGIN_TIMESTAMPING,
ee_type=0,
ee_code=0,
ee_info=SCM_TSTAMP_SND,
ee_data=1999}}
]}, MSG_ERRQUEUE) = 0
// SCM_TSTAMP_SCHED for the second chunk should be received almost immediately
// after that at t=10ms.
+0 recvmsg(4, {msg_name(...)=...,
msg_iov(1)=[{...,0}],
msg_flags=MSG_ERRQUEUE|MSG_TRUNC,
msg_control=[
{cmsg_level=SOL_SOCKET,
cmsg_type=SCM_TIMESTAMPING,
cmsg_data={scm_sec=0,scm_nsec=10000000}},
{cmsg_level=CMSG_LEVEL_IP,
cmsg_type=CMSG_TYPE_RECVERR,
cmsg_data={ee_errno=ENOMSG,
ee_origin=SO_EE_ORIGIN_TIMESTAMPING,
ee_type=0,
ee_code=0,
ee_info=SCM_TSTAMP_SCHED,
ee_data=3999}}
]}, MSG_ERRQUEUE) = 0
// SCM_TSTAMP_SND for the second chunk should be received almost immediately
// after that at t=10ms.
+0 recvmsg(4, {msg_name(...)=...,
msg_iov(1)=[{...,0}],
msg_flags=MSG_ERRQUEUE|MSG_TRUNC,
msg_control=[
{cmsg_level=SOL_SOCKET,
cmsg_type=SCM_TIMESTAMPING,
cmsg_data={scm_sec=0,scm_nsec=10000000}},
{cmsg_level=CMSG_LEVEL_IP,
cmsg_type=CMSG_TYPE_RECVERR,
cmsg_data={ee_errno=ENOMSG,
ee_origin=SO_EE_ORIGIN_TIMESTAMPING,
ee_type=0,
ee_code=0,
ee_info=SCM_TSTAMP_SND,
ee_data=3999}}
]}, MSG_ERRQUEUE) = 0
// SCM_TSTAMP_ACK for the first chunk should be received at t=20ms.
+0 recvmsg(4, {msg_name(...)=...,
msg_iov(1)=[{...,0}],
msg_flags=MSG_ERRQUEUE|MSG_TRUNC,
msg_control=[
{cmsg_level=SOL_SOCKET,
cmsg_type=SCM_TIMESTAMPING,
cmsg_data={scm_sec=0,scm_nsec=20000000}},
{cmsg_level=CMSG_LEVEL_IP,
cmsg_type=CMSG_TYPE_RECVERR,
cmsg_data={ee_errno=ENOMSG,
ee_origin=SO_EE_ORIGIN_TIMESTAMPING,
ee_type=0,
ee_code=0,
ee_info=SCM_TSTAMP_ACK,
ee_data=1999}}
]}, MSG_ERRQUEUE) = 0
// SCM_TSTAMP_ACK for the second chunk should be received at t=30ms.
+0 recvmsg(4, {msg_name(...)=...,
msg_iov(1)=[{...,0}],
msg_flags=MSG_ERRQUEUE|MSG_TRUNC,
msg_control=[
{cmsg_level=SOL_SOCKET,
cmsg_type=SCM_TIMESTAMPING,
cmsg_data={scm_sec=0,scm_nsec=30000000}},
{cmsg_level=CMSG_LEVEL_IP,
cmsg_type=CMSG_TYPE_RECVERR,
cmsg_data={ee_errno=ENOMSG,
ee_origin=SO_EE_ORIGIN_TIMESTAMPING,
ee_type=0,
ee_code=0,
ee_info=SCM_TSTAMP_ACK,
ee_data=3999}}
]}, MSG_ERRQUEUE) = 0
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