linux-stable.git/tools/testing/selftests/net, branch v6.14

Revert "selftests: Add IPv6 link-local address generation tests for GRE devices."

2025-03-20T14:46:16+00:00

This reverts commit 6f50175ccad4278ed3a9394c00b797b75441bd6e.

Commit 183185a18ff9 ("gre: Fix IPv6 link-local address generation.") is
going to be reverted. So let's revert the corresponding kselftest
first.

Signed-off-by: Guillaume Nault 
Link: https://patch.msgid.link/259a9e98f7f1be7ce02b53d0b4afb7c18a8ff747.1742418408.git.gnault@redhat.com
Acked-by: Stanislav Fomichev 
Signed-off-by: Paolo Abeni

selftests: net: test for lwtunnel dst ref loops

2025-03-20T10:25:52+00:00

As recently specified by commit 0ea09cbf8350 ("docs: netdev: add a note
on selftest posting") in net-next, the selftest is therefore shipped in
this series. However, this selftest does not really test this series. It
needs this series to avoid crashing the kernel. What it really tests,
thanks to kmemleak, is what was fixed by the following commits:
- commit c71a192976de ("net: ipv6: fix dst refleaks in rpl, seg6 and
ioam6 lwtunnels")
- commit 92191dd10730 ("net: ipv6: fix dst ref loops in rpl, seg6 and
ioam6 lwtunnels")
- commit c64a0727f9b1 ("net: ipv6: fix dst ref loop on input in seg6
lwt")
- commit 13e55fbaec17 ("net: ipv6: fix dst ref loop on input in rpl
lwt")
- commit 0e7633d7b95b ("net: ipv6: fix dst ref loop in ila lwtunnel")
- commit 5da15a9c11c1 ("net: ipv6: fix missing dst ref drop in ila
lwtunnel")

Signed-off-by: Justin Iurman 
Link: https://patch.msgid.link/20250314120048.12569-4-justin.iurman@uliege.be
Signed-off-by: Paolo Abeni

Merge tag 'nf-25-03-13' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf

2025-03-13T14:07:39+00:00

Pablo Neira Ayuso says:

====================
Netfilter/IPVS fixes for net

The following patchset contains Netfilter/IPVS fixes for net:

1) Missing initialization of cpu and jiffies32 fields in conncount,
   from Kohei Enju.

2) Skip several tests in case kernel is tainted, otherwise tests bogusly
   report failure too as they also check for tainted kernel,
   from Florian Westphal.

3) Fix a hyphothetical integer overflow in do_ip_vs_get_ctl() leading
   to bogus error logs, from Dan Carpenter.

4) Fix incorrect offset in ipv4 option match in nft_exthdr, from
   Alexey Kashavkin.

netfilter pull request 25-03-13

* tag 'nf-25-03-13' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
  netfilter: nft_exthdr: fix offset with ipv4_find_option()
  ipvs: prevent integer overflow in do_ip_vs_get_ctl()
  selftests: netfilter: skip br_netfilter queue tests if kernel is tainted
  netfilter: nf_conncount: Fully initialize struct nf_conncount_tuple in insert_tree()
====================

Link: https://patch.msgid.link/20250313095636.2186-1-pablo@netfilter.org
Signed-off-by: Paolo Abeni

selftests: Add IPv6 link-local address generation tests for GRE devices.

2025-03-13T09:17:42+00:00

GRE devices have their special code for IPv6 link-local address
generation that has been the source of several regressions in the past.

Add selftest to check that all gre, ip6gre, gretap and ip6gretap get an
IPv6 link-link local address in accordance with the
net.ipv6.conf..addr_gen_mode sysctl.

Signed-off-by: Guillaume Nault 
Reviewed-by: Ido Schimmel 
Tested-by: Ido Schimmel 
Reviewed-by: Petr Machata 
Link: https://patch.msgid.link/2d6772af8e1da9016b2180ec3f8d9ee99f470c77.1741375285.git.gnault@redhat.com
Signed-off-by: Paolo Abeni

selftests: netfilter: skip br_netfilter queue tests if kernel is tainted

2025-03-12T14:28:34+00:00

These scripts fail if the kernel is tainted which leads to wrong test
failure reports in CI environments when an unrelated test triggers some
splat.

Check taint state at start of script and SKIP if its already dodgy.

Signed-off-by: Florian Westphal 
Signed-off-by: Pablo Neira Ayuso

selftests: drv-net: add xdp cases for ping.py

2025-03-10T20:31:12+00:00

ping.py has 3 cases, test_v4, test_v6 and test_tcp.
But these cases are not executed on the XDP environment.
So, it adds XDP environment, existing tests(test_v4, test_v6, and
test_tcp) are executed too on the below XDP environment.
So, it adds XDP cases.
1. xdp-generic + single-buffer
2. xdp-generic + multi-buffer
3. xdp-native + single-buffer
4. xdp-native + multi-buffer
5. xdp-offload

It also makes test_{v4 | v6 | tcp} sending large size packets. this may
help to check whether multi-buffer is working or not.

Note that the physical interface may be down and then up when xdp is
attached or detached.
This takes some period to activate traffic. So sleep(10) is
added if the test interface is the physical interface.
netdevsim and veth type interfaces skip sleep.

Signed-off-by: Taehee Yoo 
Link: https://patch.msgid.link/20250309134219.91670-9-ap420073@gmail.com
Signed-off-by: Jakub Kicinski

selftests: drv-net: test XDP, HDS auto and the ioctl path

2025-02-24T22:16:37+00:00

Test XDP and HDS interaction. While at it add a test for using the IOCTL,
as that turned out to be the real culprit.

Testing bnxt:

  # NETIF=eth0 ./ksft-net-drv/drivers/net/hds.py
  KTAP version 1
  1..12
  ok 1 hds.get_hds
  ok 2 hds.get_hds_thresh
  ok 3 hds.set_hds_disable # SKIP disabling of HDS not supported by the device
  ok 4 hds.set_hds_enable
  ok 5 hds.set_hds_thresh_zero
  ok 6 hds.set_hds_thresh_max
  ok 7 hds.set_hds_thresh_gt
  ok 8 hds.set_xdp
  ok 9 hds.enabled_set_xdp
  ok 10 hds.ioctl
  ok 11 hds.ioctl_set_xdp
  ok 12 hds.ioctl_enabled_set_xdp
  # Totals: pass:11 fail:0 xfail:0 xpass:0 skip:1 error:0

and netdevsim:

  # ./ksft-net-drv/drivers/net/hds.py
  KTAP version 1
  1..12
  ok 1 hds.get_hds
  ok 2 hds.get_hds_thresh
  ok 3 hds.set_hds_disable
  ok 4 hds.set_hds_enable
  ok 5 hds.set_hds_thresh_zero
  ok 6 hds.set_hds_thresh_max
  ok 7 hds.set_hds_thresh_gt
  ok 8 hds.set_xdp
  ok 9 hds.enabled_set_xdp
  ok 10 hds.ioctl
  ok 11 hds.ioctl_set_xdp
  ok 12 hds.ioctl_enabled_set_xdp
  # Totals: pass:12 fail:0 xfail:0 xpass:0 skip:0 error:0

Netdevsim needs a sane default for tx/rx ring size.

ethtool 6.11 is needed for the --disable-netlink option.

Acked-by: Stanislav Fomichev 
Tested-by: Taehee Yoo 
Link: https://patch.msgid.link/20250221025141.1132944-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski

selftests/net/forwarding: Add a test case for tc-flower of mixed port and port-range

2025-02-20T02:54:59+00:00

After this patch:

 # ./tc_flower_port_range.sh
 TEST: Port range matching - IPv4 UDP                                [ OK ]
 TEST: Port range matching - IPv4 TCP                                [ OK ]
 TEST: Port range matching - IPv6 UDP                                [ OK ]
 TEST: Port range matching - IPv6 TCP                                [ OK ]
 TEST: Port range matching - IPv4 UDP Drop                           [ OK ]

Cc: Qiang Zhang 
Cc: Jamal Hadi Salim 
Cc: Jiri Pirko 
Signed-off-by: Cong Wang 
Reviewed-by: Ido Schimmel 
Tested-by: Ido Schimmel 
Link: https://patch.msgid.link/20250218043210.732959-3-xiyou.wangcong@gmail.com
Signed-off-by: Jakub Kicinski

selftests: mptcp: connect: -f: no reconnect

2025-02-06T01:54:32+00:00

The '-f' parameter is there to force the kernel to emit MPTCP FASTCLOSE
by closing the connection with unread bytes in the receive queue.

The xdisconnect() helper was used to stop the connection, but it does
more than that: it will shut it down, then wait before reconnecting to
the same address. This causes the mptcp_join's "fastclose test" to fail
all the time.

This failure is due to a recent change, with commit 218cc166321f
("selftests: mptcp: avoid spurious errors on disconnect"), but that went
unnoticed because the test is currently ignored. The recent modification
only shown an existing issue: xdisconnect() doesn't need to be used
here, only the shutdown() part is needed.

Fixes: 6bf41020b72b ("selftests: mptcp: update and extend fastclose test-cases")
Cc: stable@vger.kernel.org
Reviewed-by: Mat Martineau 
Signed-off-by: Matthieu Baerts (NGI0) 
Link: https://patch.msgid.link/20250204-net-mptcp-sft-conn-f-v1-1-6b470c72fffa@kernel.org
Signed-off-by: Jakub Kicinski

udp: gso: do not drop small packets when PMTU reduces

2025-02-03T10:13:27+00:00

Commit 4094871db1d6 ("udp: only do GSO if # of segs > 1") avoided GSO
for small packets. But the kernel currently dismisses GSO requests only
after checking MTU/PMTU on gso_size. This means any packets, regardless
of their payload sizes, could be dropped when PMTU becomes smaller than
requested gso_size. We encountered this issue in production and it
caused a reliability problem that new QUIC connection cannot be
established before PMTU cache expired, while non GSO sockets still
worked fine at the same time.

Ideally, do not check any GSO related constraints when payload size is
smaller than requested gso_size, and return EMSGSIZE instead of EINVAL
on MTU/PMTU check failure to be more specific on the error cause.

Fixes: 4094871db1d6 ("udp: only do GSO if # of segs > 1")
Signed-off-by: Yan Zhai 
Suggested-by: Willem de Bruijn 
Reviewed-by: Willem de Bruijn 
Signed-off-by: David S. Miller