[Devel] [PATCH hci-8.1 v3 0/5] selftests: net: make the net tests pass on a vz10 host

[Konstantin Khorenko <khorenko@virtuozzo.com>]

This is Eva's series as reviewed on the list, with the two changes below
made while applying, so that the version on the list is the one in the
tree.

The net selftests fail on a vz10 host for reasons unrelated to the code
under test: the vxlan Open vSwitch keeps on port 4789, sockets other
services hold on 0.0.0.0, features this kernel does not have (erspan is
disabled under CONFIG_VE, the SM4 and ARIA ciphers are not built), an
iproute2 that fails a netconf dump that worked, and an installed
testsuite without the script its wrapper runs. Patches 1-4 fix the
tests for each of these.

Patch 5 is an upstream fix. The bridged PMTU tests fail because the tree
has 8930424777e4 ("tunnels: Accept PACKET_HOST in
skb_tunnel_check_pmtu()") from the RHEL import, which makes a bridged
vxlan answer an oversized locally generated packet with an ICMP, but not
b58d74963320 ("tunnels: Drop stale dst when building an ICMP error for
PMTUD"), which fixes the bug that came with it: the ICMP keeps the
original packet's dst and is dropped or sent out of the tunnel instead
of being delivered. The cherry-pick brings the kernel fix together with
the pmtu.sh change v2 carried as a separate patch.

Changes since v2:

- "selftests: net: make the veth GRO checks independent of host tunnels"
  is dropped. udpgso_bench_rx -G enables udp_encap_needed_key itself,
  so the aggregation checks stop testing rx-udp-gro-forwarding on every
  host. A v3 of that patch with a SKIP instead is requested in the reply
  to v2 3/6.

- "selftests: net: let the bridged PMTU tests take the ICMP they ask
  for" is replaced with the cherry-pick of b58d74963320, whose selftest
  hunk it was.

- Reviewed-by from Vladimir, given on v1, added to the four test
  patches.

v1: https://lore.virtuozzo.com/20260831224850.1642265-1-eva.kurchatova@virtuozzo.com
v2: https://lore.virtuozzo.com/20260922120235.2729869-1-eva.kurchatova@virtuozzo.com

Signed-off-by: Konstantin Khorenko <khorenko@virtuozzo.com>
---
Eva Kurchatova (4):
      selftests: net: run the fdb and bind tests in their own netns
      selftests: net: skip what this kernel and iproute2 do not have
      selftests: net: install pmtu.sh, the script pmtu_wrapper.sh runs
      selftests: net: mark test_ingress_egress_chaining.sh executable

Ido Schimmel (1):
      ms/tunnels: Drop stale dst when building an ICMP error for PMTUD

 net/ipv4/ip_tunnel_core.c                          |  6 +++++
 tools/testing/selftests/net/Makefile               |  1 +
 tools/testing/selftests/net/bind_wildcard.c        | 13 +++++++++
 tools/testing/selftests/net/fdb_notify.sh          |  7 +++++
 tools/testing/selftests/net/ip_local_port_range.c  | 17 +++++++++---
 tools/testing/selftests/net/pmtu.sh                |  2 +-
 tools/testing/selftests/net/rtnetlink.py           | 11 ++++++--
 tools/testing/selftests/net/rtnetlink.sh           | 31 ++++++++++++++++++++++
 .../selftests/net/test_ingress_egress_chaining.sh  |  0
 .../selftests/net/test_vxlan_fdb_changelink.sh     |  7 +++++
 tools/testing/selftests/net/tls.c                  |  2 ++
 11 files changed, 90 insertions(+), 7 deletions(-)
---
base-commit: 7ecb7901c3065a4c30b55adebc059c3dd4d06424
change-id: 20260922-b4-kh-self1-3fc9d437263a

Best regards,
--  
Konstantin Khorenko <khorenko@virtuozzo.com>

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