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2022-10-03selftests: mptcp: update and extend fastclose test-casesPaolo Abeni1-8/+57
After the previous patches, the MPTCP protocol can generate fast-closes on both ends of the connection. Rework the relevant test-case to carefully trigger the fast-close code-path on a single end at the time, while ensuring than a predictable amount of data is spooled on both ends. Additionally add another test-cases for the passive socket fast-close. Reviewed-by: Matthieu Baerts <[email protected]> Reviewed-by: Mat Martineau <[email protected]> Signed-off-by: Paolo Abeni <[email protected]> Signed-off-by: Mat Martineau <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2022-08-05selftests: mptcp: make sendfile selftest workFlorian Westphal1-9/+17
When the selftest got added, sendfile() on mptcp sockets returned -EOPNOTSUPP, so running 'mptcp_connect.sh -m sendfile' failed immediately. This is no longer the case, but the script fails anyway due to timeout. Let the receiver know once the sender has sent all data, just like with '-m mmap' mode. v2: need to respect cfg_wait too, as pm_userspace.sh relied on -m sendfile to keep the connection open (Mat Martineau) Fixes: 048d19d444be ("mptcp: add basic kselftest for mptcp") Reported-by: Xiumei Mu <[email protected]> Reviewed-by: Mat Martineau <[email protected]> Signed-off-by: Florian Westphal <[email protected]> Signed-off-by: Mat Martineau <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2022-06-28selftests: mptcp: Initialize variables to quiet gcc 12 warningsMat Martineau1-1/+1
In a few MPTCP selftest tools, gcc 12 complains that the 'sock' variable might be used uninitialized. This is a false positive because the only code path that could lead to uninitialized access is where getaddrinfo() fails, but the local xgetaddrinfo() wrapper exits if such a failure occurs. Initialize the 'sock' variable anyway to allow the tools to build with gcc 12. Fixes: 048d19d444be ("mptcp: add basic kselftest for mptcp") Acked-by: Paolo Abeni <[email protected]> Signed-off-by: Mat Martineau <[email protected]> Signed-off-by: Jakub Kicinski <[email protected]>
2022-01-07selftests: mptcp: add disconnect testsPaolo Abeni1-25/+123
Performs several disconnect/reconnect on the same socket, ensuring the overall transfer is succesful. The new test leverages ioctl(SIOCOUTQ) to ensure all the pending data is acked before disconnecting. Additionally order alphabetically the test program arguments list for better maintainability. Signed-off-by: Paolo Abeni <[email protected]> Signed-off-by: Mat Martineau <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-12-17selftests: mptcp: try to set mptcp ulp mode in different sk statesFlorian Westphal1-46/+51
The kernel will crash without 'mptcp: clear 'kern' flag from fallback sockets' change. Since this doesn't slow down testing in a noticeable way, run this unconditionally. The explicit test did not catch this, because the check was done for tcp socket returned by 'socket(.. IPPROTO_TCP) rather than a tcp socket returned by accept() on a mptcp listen fd. Signed-off-by: Florian Westphal <[email protected]> Signed-off-by: Mat Martineau <[email protected]> Signed-off-by: Jakub Kicinski <[email protected]>
2021-12-07selftests: mptcp: add TCP_INQ supportFlorian Westphal1-1/+59
Do checks on the returned inq counter. Fail on: 1. Huge value (> 1 kbyte, test case files are 1 kb) 2. last hint larger than returned bytes when read was short 3. erronenous indication of EOF. 3) happens when a hint of X bytes reads X-1 on next call but next recvmsg returns more data (instead of EOF). Signed-off-by: Florian Westphal <[email protected]> Signed-off-by: Mat Martineau <[email protected]> Signed-off-by: Jakub Kicinski <[email protected]>
2021-11-20selftests: mptcp: add tproxy test caseFlorian Westphal1-1/+50
No hard dependencies here, just skip if test environ lacks nft binary or the needed kernel config options. The test case spawns listener in ns2 but ns1 will connect to the ip address of ns4. policy routing + tproxy rule will redirect packets to ns2 instead of forward. v3: - update mptcp/config (Mat Martineau) - more verbose SKIP messages in mptcp_connect.sh Signed-off-by: Florian Westphal <[email protected]> Signed-off-by: Mat Martineau <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-11-01selftests: mptcp: more stable simult_flows testsPaolo Abeni1-14/+58
Currently the simult_flows.sh self-tests are not very stable, especially when running on slow VMs. The tests measure runtime for transfers on multiple subflows and check that the time is near the theoretical maximum. The current test infra introduces a bit of jitter in test runtime, due to multiple explicit delays. Additionally the runtime is measured by the shell script wrapper. On a slow VM, the script overhead is measurable and subject to relevant jitter. One solution to make the test more stable would be adding more slack to the expected time; that could possibly hide real regressions. Instead move the measurement inside the command doing the transfer, and drop most unneeded sleeps. Reviewed-by: Matthieu Baerts <[email protected]> Signed-off-by: Paolo Abeni <[email protected]> Signed-off-by: Mat Martineau <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-06-04selftests: mptcp_connect: add SO_TIMESTAMPNS cmsg supportFlorian Westphal1-1/+124
This extends the existing setsockopt test case to also check for cmsg timestamps. mptcp_connect will abort/fail if the setockopt was passed but the timestamp cmsg isn't present after successful recvmsg(). Acked-by: Paolo Abeni <[email protected]> Signed-off-by: Florian Westphal <[email protected]> Signed-off-by: Mat Martineau <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-04-23selftests: mptcp: add a test case for MSG_PEEKYonglong Li1-2/+46
Extend mptcp_connect tool with MSG_PEEK support and add a test case in mptcp_connect.sh that checks the data received from/after recv() with MSG_PEEK. Acked-by: Paolo Abeni <[email protected]> Co-developed-by: Matthieu Baerts <[email protected]> Signed-off-by: Matthieu Baerts <[email protected]> Signed-off-by: Yonglong Li <[email protected]> Signed-off-by: Mat Martineau <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-04-16selftests: mptcp: add packet mark test caseFlorian Westphal1-1/+22
Extend mptcp_connect tool with SO_MARK support (-M <value>) and add a test case that checks that the packet mark gets copied to all subflows. This is done by only allowing packets with either skb->mark 1 or 2 via iptables. DROP rule packet counter is checked; if its not zero, print an error message and fail the test case. Acked-by: Paolo Abeni <[email protected]> Signed-off-by: Florian Westphal <[email protected]> Signed-off-by: Mat Martineau <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2021-03-26selftests: mptcp: add cfg_do_w for cfg_removeGeliang Tang1-3/+7
In some testcases, we need to slow down the transmitting process. This patch added a new argument named cfg_do_w for cfg_remove to allow the caller to pass an argument to cfg_remove. In do_rnd_write, use this cfg_do_w to control the transmitting speed. Signed-off-by: Geliang Tang <[email protected]> Signed-off-by: Mat Martineau <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-09-24selftests: mptcp: add remove cfg in mptcp_connectGeliang Tang1-3/+15
This patch added a new cfg, named cfg_remove in mptcp_connect. This new cfg_remove is copied from cfg_join. The only difference between them is in the do_rnd_write function. Here we slow down the transfer process of all data to let the RM_ADDR suboption can be sent and received completely. Otherwise the remove address and subflow test cases don't work. Suggested-by: Matthieu Baerts <[email protected]> Suggested-by: Paolo Abeni <[email protected]> Suggested-by: Mat Martineau <[email protected]> Acked-by: Paolo Abeni <[email protected]> Signed-off-by: Geliang Tang <[email protected]> Reviewed-by: Mat Martineau <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-09-02selftests: mptcp: fix typo in mptcp_connect usageDavide Caratti1-2/+2
in mptcp_connect, 's' selects IPPROTO_MPTCP / IPPROTO_TCP as the value of 'protocol' in socket(), and 'm' switches between different send / receive modes. Fix die_usage(): swap 'm' and 's' and add missing 'sendfile' mode. Signed-off-by: Davide Caratti <[email protected]> Reviewed-by: Matthieu Baerts <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-08-07mptcp: more stable diag self-testsPaolo Abeni1-4/+5
During diag self-tests we introduce long wait in the mptcp test program to give the script enough time to access the sockets dump. Such wait is introduced after shutting down one sockets end. Since commit 43b54c6ee382 ("mptcp: Use full MPTCP-level disconnect state machine") if both sides shutdown the socket is correctly transitioned into CLOSED status. As a side effect some sockets are not dumped via the diag interface, because the socket state (CLOSED) does not match the default filter, and this cause self-tests instability. Address the issue moving the above mentioned wait before shutting down the socket. Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/68 Fixes: df62f2ec3df6 ("selftests/mptcp: add diag interface tests") Tested-and-acked-by: Matthieu Baerts <[email protected]> Signed-off-by: Paolo Abeni <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-07-09selftests/mptcp: add diag interface testsPaolo Abeni1-4/+18
basic functional test, triggering the msk diag interface code. Require appropriate iproute2 support, skip elsewhere. Reviewed-by: Mat Martineau <[email protected]> Signed-off-by: Paolo Abeni <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-03-29selftests: add test-cases for MPTCP MP_JOINPaolo Abeni1-3/+25
Use the pm netlink to configure the creation of several subflows, and verify that via MIB counters. Update the mptcp_connect program to allow reliable MP_JOIN handshake even on small data file Signed-off-by: Paolo Abeni <[email protected]> Signed-off-by: Mat Martineau <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-03-09mptcp: selftests: add rcvbuf set optionFlorian Westphal1-10/+35
allows to run the tests with fixed receive buffer by passing "-R <value>" to mptcp_connect.sh. While at it, add a default 10 second poll timeout so the "-t" becomes optional -- this makes mptcp_connect simpler to use during manual testing. Signed-off-by: Florian Westphal <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-02-06mptcp: fix use-after-free for ipv6Florian Westphal1-0/+9
Turns out that when we accept a new subflow, the newly created inet_sk(tcp_sk)->pinet6 points at the ipv6_pinfo structure of the listener socket. This wasn't caught by the selftest because it closes the accepted fd before the listening one. adding a close(listenfd) after accept returns is enough: BUG: KASAN: use-after-free in inet6_getname+0x6ba/0x790 Read of size 1 at addr ffff88810e310866 by task mptcp_connect/2518 Call Trace: inet6_getname+0x6ba/0x790 __sys_getpeername+0x10b/0x250 __x64_sys_getpeername+0x6f/0xb0 also alter test program to exercise this. Reported-by: Christoph Paasch <[email protected]> Signed-off-by: Florian Westphal <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-01-24mptcp: add basic kselftest for mptcpFlorian Westphal1-0/+832
Add mptcp_connect tool: xmit two files back and forth between two processes, several net namespaces including some adding delays, losses and reordering. Wrapper script tests that data was transmitted without corruption. The "-c" command line option for mptcp_connect.sh is there for debugging: The script will use tcpdump to create one .pcap file per test case, named according to the namespaces, protocols, and connect address in use. For example, the first test case writes the capture to ns1-ns1-MPTCP-MPTCP-10.0.1.1.pcap. The stderr output from tcpdump is printed after the test completes to show tcpdump's "packets dropped by kernel" information. Also check that userspace can't create MPTCP sockets when mptcp.enabled sysctl is off. The "-b" option allows to tune/lower send buffer size. "-m mmap" can be used to test blocking io. Default is non-blocking io using read/write/poll. Will run automatically on "make kselftest". Note that the default timeout of 45 seconds is used even if there is a "settings" changing it to 450. 45 seconds should be enough in most cases but this depends on the machine running the tests. A fix to correctly read the "settings" file has been proposed upstream but not applied yet. It is not blocking the execution of these new tests but it would be nice to have it: https://patchwork.kernel.org/patch/11204935/ Co-developed-by: Paolo Abeni <[email protected]> Signed-off-by: Paolo Abeni <[email protected]> Co-developed-by: Mat Martineau <[email protected]> Signed-off-by: Mat Martineau <[email protected]> Co-developed-by: Matthieu Baerts <[email protected]> Signed-off-by: Matthieu Baerts <[email protected]> Co-developed-by: Davide Caratti <[email protected]> Signed-off-by: Davide Caratti <[email protected]> Signed-off-by: Florian Westphal <[email protected]> Signed-off-by: Christoph Paasch <[email protected]> Signed-off-by: David S. Miller <[email protected]>
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