selftests/net: packetdrill: unflake tcp_user_timeout_user-timeout-probe.pkt

This test fails the first time I am running it after a fresh virtme-ng boot.

tcp_user_timeout_user-timeout-probe.pkt:33: runtime error in write call: Expected result -1 but got 24 with errno 2 (No such file or directory)

Tweaks the timings a bit, to reduce flakiness.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Soham Chakradeo <sohamch@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Tested-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Link: https://patch.msgid.link/20251014171907.3554413-2-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/tools/testing/selftests/net/packetdrill/tcp_user_timeout_user-timeout-probe.pkt b/tools/testing/selftests/net/packetdrill/tcp_user_timeout_user-timeout-probe.pkt
index 183051ba0cae301f1b92706f56b3aa221f998077..6882b8240a8a956689d4dce21a5d8883fdbd8159 100644 (file)
--- a/tools/testing/selftests/net/packetdrill/tcp_user_timeout_user-timeout-probe.pkt
+++ b/tools/testing/selftests/net/packetdrill/tcp_user_timeout_user-timeout-probe.pkt
@@ -23,14 +23,16 @@
 
 // install a qdisc dropping all packets
    +0 `tc qdisc delete dev tun0 root 2>/dev/null ; tc qdisc add dev tun0 root pfifo limit 0`
+
    +0 write(4, ..., 24) = 24
    // When qdisc is congested we retry every 500ms
    // (TCP_RESOURCE_PROBE_INTERVAL) and therefore
    // we retry 6 times before hitting 3s timeout.
    // First verify that the connection is alive:
-+3.250 write(4, ..., 24) = 24
++3 write(4, ..., 24) = 24
+
    // Now verify that shortly after that the socket is dead:
- +.100 write(4, ..., 24) = -1 ETIMEDOUT (Connection timed out)
++1 write(4, ..., 24) = -1 ETIMEDOUT (Connection timed out)
 
    +0 %{ assert tcpi_probes == 6, tcpi_probes; \
          assert tcpi_backoff == 0, tcpi_backoff }%