> On Aug 13, 2024, at 6:12 PM, Martin KaFai Lau <martin....@linux.dev> wrote:
>
> >
> On 8/5/24 2:52 AM, Matthieu Baerts (NGI0) wrote:
>> +static int endpoint_init(char *flags)
>> +{
>> + SYS(fail, "ip -net %s link add veth1 type veth peer name veth2", NS_TEST);
>> + SYS(fail, "ip -net %s addr add %s/24 dev veth1", NS_TEST, ADDR_1);
>> + SYS(fail, "ip -net %s link set dev veth1 up", NS_TEST);
>> + SYS(fail, "ip -net %s addr add %s/24 dev veth2", NS_TEST, ADDR_2);
>> + SYS(fail, "ip -net %s link set dev veth2 up", NS_TEST);
>> + if (SYS_NOFAIL("ip -net %s mptcp endpoint add %s %s", NS_TEST, ADDR_2,
>> flags)) {
>> + printf("'ip mptcp' not supported, skip this test.\n");
>> + test__skip();
>
> It is always a skip now in bpf CI:
>
> #171/3 mptcp/subflow:SKIP
>
> This test is a useful addition for the bpf CI selftest.
>
> It can't catch regression if it is always a skip in bpf CI though.
>
> iproute2 needs to be updated (cc: Daniel Xu and Manu, the outdated iproute2
> is something that came up multiple times).
>
> Not sure when the iproute2 can be updated. In the mean time, your v3 is
> pretty close to getting pm_nl_ctl compiled. Is there other blocker on this?
I have updated runners to Ubuntu 24.04 which comes with:
root@1fdd5d75581b:/actions-runner# ip --json -V
ip utility, iproute2-6.1.0, libbpf 1.3.0
root@1fdd5d75581b:/actions-runner# ip mptcp help
Usage: ip mptcp endpoint add ADDRESS [ dev NAME ] [ id ID ]
[ port NR ] [ FLAG-LIST ]
ip mptcp endpoint delete id ID [ ADDRESS ]
ip mptcp endpoint change [ id ID ] [ ADDRESS ] [ port NR ] CHANGE-OPT
ip mptcp endpoint show [ id ID ]
ip mptcp endpoint flush
ip mptcp limits set [ subflows NR ] [ add_addr_accepted NR ]
ip mptcp limits show
ip mptcp monitor
FLAG-LIST := [ FLAG-LIST ] FLAG
FLAG := [ signal | subflow | backup | fullmesh ]
CHANGE-OPT := [ backup | nobackup | fullmesh | nofullmesh ]
Assuming I don’t need to revert back to old runners due to unrelated issue, you
should now have `ip mptcp` available.
Manu
>
>> + goto fail;
>> + }
>> +
>> + return 0;
>> +fail:
>> + return -1;
>> +}
>> +
>> +static int _ss_search(char *src, char *dst, char *port, char *keyword)
>> +{
>> + return SYS_NOFAIL("ip netns exec %s ss -enita src %s dst %s %s %d | grep
>> -q '%s'",
>> + NS_TEST, src, dst, port, PORT_1, keyword);
>> +}
>> +
>> +static int ss_search(char *src, char *keyword)
>> +{
>> + return _ss_search(src, ADDR_1, "dport", keyword);
>> +}
>> +
>> +static void run_subflow(char *new)
>> +{
>> + int server_fd, client_fd, err;
>> + char cc[TCP_CA_NAME_MAX];
>> + socklen_t len = sizeof(cc);
>> +
>> + server_fd = start_mptcp_server(AF_INET, ADDR_1, PORT_1, 0);
>> + if (!ASSERT_GE(server_fd, 0, "start_mptcp_server"))
>> + return;
>> +
>> + client_fd = connect_to_fd(server_fd, 0);
>> + if (!ASSERT_GE(client_fd, 0, "connect to fd"))
>> + goto fail;
>> +
>> + err = getsockopt(server_fd, SOL_TCP, TCP_CONGESTION, cc, &len);
>> + if (!ASSERT_OK(err, "getsockopt(srv_fd, TCP_CONGESTION)"))
>> + goto fail;
>> +
>> + send_byte(client_fd);
>> +
>> + ASSERT_OK(ss_search(ADDR_1, "fwmark:0x1"), "ss_search fwmark:0x1");
>> + ASSERT_OK(ss_search(ADDR_2, "fwmark:0x2"), "ss_search fwmark:0x2");
>> + ASSERT_OK(ss_search(ADDR_1, new), "ss_search new cc");
>> + ASSERT_OK(ss_search(ADDR_2, cc), "ss_search default cc");
>
> Is there a getsockopt way instead of ss + grep?
>
