selftests: net: simple selftest for ipvtap

This is a simple ipvtap test to test handling
IP-address add/remove on ipvlan interface.

It creates a veth-interface and then creates several
network-name

selftests: net: simple selftest for ipvtap

This is a simple ipvtap test to test handling
IP-address add/remove on ipvlan interface.

It creates a veth-interface and then creates several
network-namespace with ipvlan0 interface in it linked to veth.

Then it starts to add/remove addresses on ipvlan0 interfaces
in several threads.

At finish, it checks that there is no duplicated addresses.

Signed-off-by: Dmitry Skorodumov <skorodumov.dmitry@huawei.com>
Link: https://patch.msgid.link/20260112142417.4039566-3-skorodumov.dmitry@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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selftests: net: sort configs

Sort config files for networking selftests. This should help us
avoid merge conflicts between net and net-next. patchwork check
will be added to prevent new issues.

Ack

selftests: net: sort configs

Sort config files for networking selftests. This should help us
avoid merge conflicts between net and net-next. patchwork check
will be added to prevent new issues.

Acked-by: Phil Sutter <phil@nwl.cc>
Acked-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Acked-by: Florian Westphal <fw@strlen.de>
Acked-by: Antonio Quartulli <antonio@openvpn.net>
Link: https://patch.msgid.link/20251003205736.1019673-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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selftests: net: Explicitly enable CONFIG_CRYPTO_SHA1 for IPsec

xfrm_policy.sh, nft_flowtable.sh, and vrf-xfrm-tests.sh use 'ip xfrm'
with SHA-1, either 'auth sha1' or 'auth-trunc hmac(sha1)'. That

selftests: net: Explicitly enable CONFIG_CRYPTO_SHA1 for IPsec

xfrm_policy.sh, nft_flowtable.sh, and vrf-xfrm-tests.sh use 'ip xfrm'
with SHA-1, either 'auth sha1' or 'auth-trunc hmac(sha1)'. That
requires CONFIG_CRYPTO_SHA1, which CONFIG_INET_ESP intentionally doesn't
select (as per its help text). Previously, the config for these tests
relied on CONFIG_CRYPTO_SHA1 being selected by the unrelated option
CONFIG_IP_SCTP. Since CONFIG_IP_SCTP is being changed to no longer do
that, instead add CONFIG_CRYPTO_SHA1 to the configs explicitly.

Reported-by: Paolo Abeni <pabeni@redhat.com>
Closes: https://lore.kernel.org/r/766e4508-aaba-4cdc-92b4-e116e52ae13b@redhat.com
Suggested-by: Florian Westphal <fw@strlen.de>
Acked-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Link: https://patch.msgid.link/20250818205426.30222-2-ebiggers@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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selftests: net: Enable legacy netfilter legacy options.

Some specified options rely on NETFILTER_XTABLES_LEGACY to be enabled.
IP_NF_TARGET_TTL for instance depends on IP_NF_MANGLE which in turn
dep

selftests: net: Enable legacy netfilter legacy options.

Some specified options rely on NETFILTER_XTABLES_LEGACY to be enabled.
IP_NF_TARGET_TTL for instance depends on IP_NF_MANGLE which in turn
depends on IP_NF_IPTABLES_LEGACY -> NETFILTER_XTABLES_LEGACY.

Enable relevant iptables config options explicitly, this is needed
to avoid breakage when symbols related to iptables-legacy
will depend on NETFILTER_LEGACY resp. IP_TABLES_LEGACY.

This also means that the classic tables (Kernel modules) will
not be enabled by default, so enable them too.

Signed-off-by: Florian Westphal <fw@strlen.de>
[bigeasy: Split out the config bits from the main patch]
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

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selftest: net: Remove DCCP bits.

We will remove DCCP.

Let's remove DCCP bits from selftest.

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://patch.msgid.link/20250410023921.11307

selftest: net: Remove DCCP bits.

We will remove DCCP.

Let's remove DCCP bits from selftest.

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://patch.msgid.link/20250410023921.11307-2-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Cross-merge networking fixes after downstream PR (net-6.14-rc8).

Conflict:

tools/testing/selftests/net/Makefile
03544faad761 ("self

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Cross-merge networking fixes after downstream PR (net-6.14-rc8).

Conflict:

tools/testing/selftests/net/Makefile
03544faad761 ("selftest: net: add proc_net_pktgen")
3ed61b8938c6 ("selftests: net: test for lwtunnel dst ref loops")

tools/testing/selftests/net/config:
85cb3711acb8 ("selftests: net: Add test cases for link and peer netns")
3ed61b8938c6 ("selftests: net: test for lwtunnel dst ref loops")

Adjacent commits:

tools/testing/selftests/net/Makefile
c935af429ec2 ("selftests: net: add support for testing SO_RCVMARK and SO_RCVPRIORITY")
355d940f4d5a ("Revert "selftests: Add IPv6 link-local address generation tests for GRE devices."")

Signed-off-by: Paolo Abeni <pabeni@redhat.com>

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selftests: net: test for lwtunnel dst ref loops

As recently specified by commit 0ea09cbf8350 ("docs: netdev: add a note
on selftest posting") in net-next, the selftest is therefore shipped in
this s

selftests: net: test for lwtunnel dst ref loops

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 <justin.iurman@uliege.be>
Link: https://patch.msgid.link/20250314120048.12569-4-justin.iurman@uliege.be
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

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selftests: openvswitch: don't hardcode the drop reason subsys

WiFi removed one of their subsys entries from drop reasons, in
commit 286e69677065 ("wifi: mac80211: Drop cooked monitor support")
SKB_D

selftests: openvswitch: don't hardcode the drop reason subsys

WiFi removed one of their subsys entries from drop reasons, in
commit 286e69677065 ("wifi: mac80211: Drop cooked monitor support")
SKB_DROP_REASON_SUBSYS_OPENVSWITCH is now 2 not 3.
The drop reasons are not uAPI, read the correct value
from debug info.

We need to enable vmlinux BTF, otherwise pahole needs
a few GB of memory to decode the enum name.

Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Acked-by: Aaron Conole <aconole@redhat.com>
Link: https://patch.msgid.link/20250304180615.945945-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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selftest: net: add proc_net_pktgen

Add some test for /proc/net/pktgen/... interface.

- enable 'CONFIG_NET_PKTGEN=m' in tools/testing/selftests/net/config

Signed-off-by: Peter Seiderer <ps.report@g

selftest: net: add proc_net_pktgen

Add some test for /proc/net/pktgen/... interface.

- enable 'CONFIG_NET_PKTGEN=m' in tools/testing/selftests/net/config

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

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selftests: net: Add test cases for link and peer netns

- Add test for creating link in another netns when a link of the same
name and ifindex exists in current netns.
- Add test to verify that l

selftests: net: Add test cases for link and peer netns

- Add test for creating link in another netns when a link of the same
name and ifindex exists in current netns.
- Add test to verify that link is created in target netns directly -
no link new/del events should be generated in link netns or current
netns.
- Add test cases to verify that link-netns is set as expected for
various drivers and combination of namespace-related parameters.

Signed-off-by: Xiao Liang <shaw.leon@gmail.com>
Link: https://patch.msgid.link/20250219125039.18024-14-shaw.leon@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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selftests: net: add config for openvswitch

The pmtu testing will require that the OVS module is installed,
so do that.

Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Simon Horman <horms@ke

selftests: net: add config for openvswitch

The pmtu testing will require that the OVS module is installed,
so do that.

Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Simon Horman <horms@kernel.org>
Signed-off-by: Aaron Conole <aconole@redhat.com>
Link: https://patch.msgid.link/20240625172245.233874-8-aconole@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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selftests: net: remove unneeded IP_GRE config

It seems that there is no definition for config IP_GRE, and it is not a
dependency of other configs, so remove it.

linux$ find -name Kconfig | xargs gr

selftests: net: remove unneeded IP_GRE config

It seems that there is no definition for config IP_GRE, and it is not a
dependency of other configs, so remove it.

linux$ find -name Kconfig | xargs grep "IP_GRE"
<-- nothing

There is a IPV6_GRE config defined in net/ipv6/Kconfig. It only depends
on NET_IPGRE_DEMUX but not IP_GRE.

Signed-off-by: Yujie Liu <yujie.liu@intel.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Link: https://patch.msgid.link/20240624055539.2092322-1-yujie.liu@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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selftests: add selftest for the SRv6 End.DX6 behavior with netfilter

this selftest is designed for evaluating the SRv6 End.DX6 behavior
used with netfilter(rpfilter), in this example, for implementi

selftests: add selftest for the SRv6 End.DX6 behavior with netfilter

this selftest is designed for evaluating the SRv6 End.DX6 behavior
used with netfilter(rpfilter), in this example, for implementing
IPv6 L3 VPN use cases.

Signed-off-by: Jianguo Wu <wujianguo@chinatelecom.cn>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

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selftests: add selftest for the SRv6 End.DX4 behavior with netfilter

this selftest is designed for evaluating the SRv6 End.DX4 behavior
used with netfilter(rpfilter), in this example, for implementi

selftests: add selftest for the SRv6 End.DX4 behavior with netfilter

this selftest is designed for evaluating the SRv6 End.DX4 behavior
used with netfilter(rpfilter), in this example, for implementing
IPv4 L3 VPN use cases.

Signed-off-by: Jianguo Wu <wujianguo@chinatelecom.cn>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

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selftests: net: add missing config for amt.sh

Test needs IPv6 multicast. smcroute currently crashes when trying
to install a route in a kernel without IPv6 multicast.

Fixes: c08e8baea78e ("selftest

selftests: net: add missing config for amt.sh

Test needs IPv6 multicast. smcroute currently crashes when trying
to install a route in a kernel without IPv6 multicast.

Fixes: c08e8baea78e ("selftests: add amt interface selftest script")
Link: https://lore.kernel.org/r/20240509161919.3939966-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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selftests: net: add more missing kernel config

The reuseport_addr_any.sh is currently skipping DCCP tests and
pmtu.sh is skipping all the FOU/GUE related cases: add the missing
options.

Signed-off-

selftests: net: add more missing kernel config

The reuseport_addr_any.sh is currently skipping DCCP tests and
pmtu.sh is skipping all the FOU/GUE related cases: add the missing
options.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/38d3ca7f909736c1aef56e6244d67c82a9bba6ff.1707326987.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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selftests: net: enable some more knobs

The rtnetlink tests require additional options currently
off by default.

Fixes: 2766a11161cc ("selftests: rtnetlink: add ipsec offload API test")
Fixes: 5e596

selftests: net: enable some more knobs

The rtnetlink tests require additional options currently
off by default.

Fixes: 2766a11161cc ("selftests: rtnetlink: add ipsec offload API test")
Fixes: 5e596ee171ba ("selftests: add xfrm state-policy-monitor to rtnetlink.sh")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Link: https://lore.kernel.org/r/9048ca58e49b962f35dba1dfb2beaf3dab3e0411.1706723341.git.pabeni@redhat.com/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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selftests: net: add missing config for NF_TARGET_TTL

amt test uses the TTL iptables module:

ip netns exec "${RELAY}" iptables -t mangle -I PREROUTING \
-d 239.0.0.1 -j TTL --ttl-set 2

Fixes:

selftests: net: add missing config for NF_TARGET_TTL

amt test uses the TTL iptables module:

ip netns exec "${RELAY}" iptables -t mangle -I PREROUTING \
-d 239.0.0.1 -j TTL --ttl-set 2

Fixes: c08e8baea78e ("selftests: add amt interface selftest script")
Link: https://lore.kernel.org/r/20240131165605.4051645-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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selftests: net: add missing config for pmtu.sh tests

The mentioned test uses a few Kconfig still missing the
net config, add them.

Before:
# Error: Specified qdisc kind is unknown.
# Error: Spe

selftests: net: add missing config for pmtu.sh tests

The mentioned test uses a few Kconfig still missing the
net config, add them.

Before:
# Error: Specified qdisc kind is unknown.
# Error: Specified qdisc kind is unknown.
# Error: Qdisc not classful.
# We have an error talking to the kernel
# Error: Qdisc not classful.
# We have an error talking to the kernel
# policy_routing not supported
# TEST: ICMPv4 with DSCP and ECN: PMTU exceptions [SKIP]

After:
# TEST: ICMPv4 with DSCP and ECN: PMTU exceptions [ OK ]

Fixes: ec730c3e1f0e ("selftest: net: Test IPv4 PMTU exceptions with DSCP and ECN")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/8d27bf6762a5c7b3acc457d6e6872c533040f9c1.1706635101.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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selftests: net: add missing config for GENEVE

l2_tos_ttl_inherit.sh verifies the inheritance of tos and ttl
for GRETAP, VXLAN and GENEVE.
Before testing it checks if the required module is available

selftests: net: add missing config for GENEVE

l2_tos_ttl_inherit.sh verifies the inheritance of tos and ttl
for GRETAP, VXLAN and GENEVE.
Before testing it checks if the required module is available
and if not skips the tests accordingly.
Currently only GRETAP and VXLAN are tested because the GENEVE
module is missing.

Fixes: b690842d12fd ("selftests/net: test l2 tunnel TOS/TTL inheriting")
Signed-off-by: Matthias May <matthias.may@westermo.com>
Link: https://lore.kernel.org/r/20240130101157.196006-1-matthias.may@westermo.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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selftests: net: Add missing matchall classifier

One of the test cases in the test_bridge_backup_port.sh selftest relies
on a matchall classifier to drop unrelated traffic so that the Tx drop
counter

selftests: net: Add missing matchall classifier

One of the test cases in the test_bridge_backup_port.sh selftest relies
on a matchall classifier to drop unrelated traffic so that the Tx drop
counter on the VXLAN device will only be incremented as a result of
traffic generated by the test.

However, the configuration option for the matchall classifier is
missing from the configuration file which might explain the failures we
see in the netdev CI [1].

Fix by adding CONFIG_NET_CLS_MATCHALL to the configuration file.

[1]
# Backup nexthop ID - invalid IDs
# -------------------------------
[...]
# TEST: Forwarding out of vx0 [ OK ]
# TEST: No forwarding using backup nexthop ID [ OK ]
# TEST: Tx drop increased [FAIL]
# TEST: IPv6 address family nexthop as backup nexthop [ OK ]
# TEST: No forwarding out of swp1 [ OK ]
# TEST: Forwarding out of vx0 [ OK ]
# TEST: No forwarding using backup nexthop ID [ OK ]
# TEST: Tx drop increased [FAIL]
[...]

Fixes: b408453053fb ("selftests: net: Add bridge backup port and backup nexthop ID test")
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://lore.kernel.org/r/20240129123703.1857843-1-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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selftests: net: add missing config for nftables-backed iptables

Modern OSes use iptables implementation with nf_tables as a backend,
e.g.:

$ iptables -V
iptables v1.8.8 (nf_tables)

Pablo points ou

selftests: net: add missing config for nftables-backed iptables

Modern OSes use iptables implementation with nf_tables as a backend,
e.g.:

$ iptables -V
iptables v1.8.8 (nf_tables)

Pablo points out that we need CONFIG_NFT_COMPAT to make that work,
otherwise we see a lot of:

Warning: Extension DNAT revision 0 not supported, missing kernel module?

with DNAT being just an example here, other modules we need
include udp, TTL, length etc.

Link: https://lore.kernel.org/r/20240126201308.2903602-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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selftests: net: add missing required classifier

the udpgro_fraglist self-test uses the BPF classifiers, but the
current net self-test configuration does not include it, causing
CI failures:

# self

selftests: net: add missing required classifier

the udpgro_fraglist self-test uses the BPF classifiers, but the
current net self-test configuration does not include it, causing
CI failures:

# selftests: net: udpgro_frglist.sh
# ipv6
# tcp - over veth touching data
# -l 4 -6 -D 2001:db8::1 -t rx -4 -t
# Error: TC classifier not found.
# We have an error talking to the kernel
# Error: TC classifier not found.
# We have an error talking to the kernel

Add the missing knob.

Fixes: edae34a3ed92 ("selftests net: add UDP GRO fraglist + bpf self-tests")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Maciej Żenczykowski <maze@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/7c3643763b331e9a400e1874fe089193c99a1c3f.1706170897.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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selftests: net: add missing config for big tcp tests

The big_tcp test-case requires a few kernel knobs currently
not specified in the net selftests config, causing the
following failure:

# selfte

selftests: net: add missing config for big tcp tests

The big_tcp test-case requires a few kernel knobs currently
not specified in the net selftests config, causing the
following failure:

# selftests: net: big_tcp.sh
# Error: Failed to load TC action module.
# We have an error talking to the kernel
...
# Testing for BIG TCP:
# CLI GSO | GW GRO | GW GSO | SER GRO
# ./big_tcp.sh: line 107: test: !=: unary operator expected
...
# on on on on : [FAIL_on_link1]

Add the missing configs

Fixes: 6bb382bcf742 ("selftests: add a selftest for big tcp")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Aaron Conole <aconole@redhat.com>
Acked-by: Xin Long <lucien.xin@gmail.com>
Link: https://lore.kernel.org/all/21630ecea872fea13f071342ac64ef52a991a9b5.1706282943.git.pabeni@redhat.com/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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selftests: fill in some missing configs for net

We are missing a lot of config options from net selftests,
it seems:

tun/tap: CONFIG_TUN, CONFIG_MACVLAN, CONFIG_MACVTAP
fib_tests: CONFIG_NET_

selftests: fill in some missing configs for net

We are missing a lot of config options from net selftests,
it seems:

tun/tap: CONFIG_TUN, CONFIG_MACVLAN, CONFIG_MACVTAP
fib_tests: CONFIG_NET_SCH_FQ_CODEL
l2tp: CONFIG_L2TP, CONFIG_L2TP_V3, CONFIG_L2TP_IP, CONFIG_L2TP_ETH
sctp-vrf: CONFIG_INET_DIAG
txtimestamp: CONFIG_NET_CLS_U32
vxlan_mdb: CONFIG_BRIDGE_VLAN_FILTERING
gre_gso: CONFIG_NET_IPGRE_DEMUX, CONFIG_IP_GRE, CONFIG_IPV6_GRE
srv6_end_dt*_l3vpn: CONFIG_IPV6_SEG6_LWTUNNEL
ip_local_port_range: CONFIG_MPTCP
fib_test: CONFIG_NET_CLS_BASIC
rtnetlink: CONFIG_MACSEC, CONFIG_NET_SCH_HTB, CONFIG_XFRM_INTERFACE
CONFIG_NET_IPGRE, CONFIG_BONDING
fib_nexthops: CONFIG_MPLS, CONFIG_MPLS_ROUTING
vxlan_mdb: CONFIG_NET_ACT_GACT
tls: CONFIG_TLS, CONFIG_CRYPTO_CHACHA20POLY1305
psample: CONFIG_PSAMPLE
fcnal: CONFIG_TCP_MD5SIG

Try to add them in a semi-alphabetical order.

Fixes: 62199e3f1658 ("selftests: net: Add VXLAN MDB test")
Fixes: c12e0d5f267d ("self-tests: introduce self-tests for RPS default mask")
Fixes: 122db5e3634b ("selftests/net: add MPTCP coverage for IP_LOCAL_PORT_RANGE")
Link: https://lore.kernel.org/r/20240122203528.672004-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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