linux/tools/testing/selftests/drivers/net, branch v6.17

selftests: bonding: add vlan over bond testing

2025-09-17T22:13:51Z

Add a vlan over bond testing to make sure arp/ns target works. Also change all the configs to mudules. Signed-off-by: Hangbin Liu Link: https://patch.msgid.link/20250916080127.430626-2-liuhangbin@gmail.com Signed-off-by: Jakub Kicinski

selftests: bonding: add fail_over_mac testing

2025-09-16T00:48:42Z

Add a test to check each value of bond fail_over_mac option. Also fix a minor garp_test print issue. Signed-off-by: Hangbin Liu Link: https://patch.msgid.link/20250910024336.400253-2-liuhangbin@gmail.com Signed-off-by: Jakub Kicinski

selftests: drv-net: csum: fix interface name for remote host

2025-09-01T19:43:10Z

Use cfg.remote_ifname for arguments of remote command. Without this UDP tests fail in NIPA where local interface is called enp1s0 and remote enp0s4. Fixes: 1d0dc857b5d8 ("selftests: drv-net: add checksum tests") Reviewed-by: Willem de Bruijn Reviewed-by: Vadim Fedorenko Link: https://patch.msgid.link/20250830183842.688935-1-kuba@kernel.org Signed-off-by: Jakub Kicinski

selftests: bonding: add test for passive LACP mode

2025-08-21T07:35:21Z

Add a selftest to verify bonding behavior when `lacp_active` is set to `off`. The test checks the following: - The passive LACP bond should not send LACPDUs before receiving a partner's LACPDU. - The transmitted LACPDUs must not include the active flag. - After transitioning to EXPIRED and DEFAULTED states, the passive side should still not initiate LACPDUs. Signed-off-by: Hangbin Liu Link: https://patch.msgid.link/20250815062000.22220-4-liuhangbin@gmail.com Signed-off-by: Paolo Abeni

selftests: drv-net: don't assume device has only 2 queues

2025-08-12T12:43:05Z

The test is implicitly assuming the device only has 2 queues. A real device will likely have more. The exact problem is that because NAPIs get added to the list from the head, the netlink dump reports them in reverse order. So the naive napis[0] will actually likely give us the _last_ NAPI, not the first one. Re-enable all the NAPIs instead of hard-coding 2 in the test. This way the NAPIs we operated on will always reappear, doesn't matter where they were in the registration order. Fixes: e6d76268813d ("net: Update threaded state in napi config in netif_set_threaded") Signed-off-by: Jakub Kicinski Reviewed-by: Joe Damato Link: https://patch.msgid.link/20250809001205.1147153-2-kuba@kernel.org Signed-off-by: Paolo Abeni

net: Update threaded state in napi config in netif_set_threaded

2025-08-06T00:46:15Z

Commit 2677010e7793 ("Add support to set NAPI threaded for individual NAPI") added support to enable/disable threaded napi using netlink. This also extended the napi config save/restore functionality to set the napi threaded state. This breaks netdev reset for drivers that use napi threaded at device level and also use napi config save/restore on napi_disable/napi_enable. Basically on netdev with napi threaded enabled at device level, a napi_enable call will get stuck trying to stop the napi kthread. This is because the napi->config->threaded is set to disabled when threaded is enabled at device level. The issue can be reproduced on virtio-net device using qemu. To reproduce the issue run following, echo 1 > /sys/class/net/threaded ethtool -L eth0 combined 1 Update the threaded state in napi config in netif_set_threaded and add a new test that verifies this scenario. Tested on qemu with virtio-net: NETIF=eth0 ./tools/testing/selftests/drivers/net/napi_threaded.py TAP version 13 1..2 ok 1 napi_threaded.change_num_queues ok 2 napi_threaded.enable_dev_threaded_disable_napi_threaded # Totals: pass:2 fail:0 xfail:0 xpass:0 skip:0 error:0 Fixes: 2677010e7793 ("Add support to set NAPI threaded for individual NAPI") Signed-off-by: Samiullah Khawaja Link: https://patch.msgid.link/20250804164457.2494390-1-skhawaja@google.com Signed-off-by: Jakub Kicinski

selftests: netdevsim: Xfail nexthop test on slow machines

2025-08-05T23:11:03Z

A lot of test cases in the file are related to the idle and unbalanced timers of resilient nexthop groups and these tests are reported to be flaky on slow machines running debug kernels. Rather than marking a lot of individual tests with xfail_on_slow(), simply mark all the tests. Note that the test is stable on non-debug machines and that with debug kernels we are mainly interested in the output of various sanitizers in order to determine pass / fail. Before: # make -C tools/testing/selftests KSFT_MACHINE_SLOW=yes \ TARGETS=drivers/net/netdevsim TEST_PROGS=nexthop.sh \ TEST_GEN_PROGS="" run_tests [...] # TEST: Bucket migration after idle timer (with delete) [FAIL] # Group expected to still be unbalanced [...] not ok 1 selftests: drivers/net/netdevsim: nexthop.sh # exit=1 After: # make -C tools/testing/selftests KSFT_MACHINE_SLOW=yes \ TARGETS=drivers/net/netdevsim TEST_PROGS=nexthop.sh \ TEST_GEN_PROGS="" run_tests [...] # TEST: Bucket migration after idle timer (with delete) [XFAIL] # Group expected to still be unbalanced [...] ok 1 selftests: drivers/net/netdevsim: nexthop.sh Reported-by: Jakub Kicinski Closes: https://lore.kernel.org/netdev/20250729160609.02e0f157@kernel.org/ Reviewed-by: Petr Machata Signed-off-by: Ido Schimmel Link: https://patch.msgid.link/20250804114320.193203-1-idosch@nvidia.com Signed-off-by: Jakub Kicinski

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

2025-07-26T18:49:45Z

Merge in late fixes to prepare for the 6.17 net-next PR. Conflicts: net/core/neighbour.c 1bbb76a89948 ("neighbour: Fix null-ptr-deref in neigh_flush_dev().") 13a936bb99fb ("neighbour: Protect tbl->phash_buckets[] with a dedicated mutex.") 03dc03fa0432 ("neighbor: Add NTF_EXT_VALIDATED flag for externally validated entries") Adjacent changes: drivers/net/usb/usbnet.c 0d9cfc9b8cb1 ("net: usbnet: Avoid potential RCU stall on LINK_CHANGE event") 2c04d279e857 ("net: usb: Convert tasklet API to new bottom half workqueue mechanism") net/ipv6/route.c 31d7d67ba127 ("ipv6: annotate data-races around rt->fib6_nsiblings") 1caf27297215 ("ipv6: adopt dst_dev() helper") 3b3ccf9ed05e ("net: Remove unnecessary NULL check for lwtunnel_fill_encap()") Signed-off-by: Jakub Kicinski

selftests: drv-net: Wait for bkg socat to start

2025-07-25T23:57:28Z

Currently, UDP exchange is prone to failure when cmd attempt to send data while socat in bkg is not ready. Since, the behavior is probabilistic, this can result in flakiness for XDP tests. While testing test_xdp_native_tx_mb() on netdevsim, a failure rate of around 1% in 500 500 iterations was observed. Use wait_port_listen() to ensure that the bkg socat is started and ready to receive before cmd start sending. With proposed changes, a re-run of the same test passed 100% of time. Signed-off-by: Mohsin Bashir Link: https://patch.msgid.link/20250724235140.2645885-1-mohsin.bashr@gmail.com Signed-off-by: Jakub Kicinski

selftests: net: Skip test if IPv6 is not configured

2025-07-25T18:25:34Z

Extend the `check_for_dependencies()` function in `lib_netcons.sh` to check whether IPv6 is enabled by verifying the existence of `/proc/net/if_inet6`. Having IPv6 is a now a dependency of netconsole tests. If the file does not exist, the script will skip the test with an appropriate message suggesting to verify if `CONFIG_IPV6` is enabled. This prevents the test to misbehave if IPv6 is not configured. Signed-off-by: Breno Leitao Reviewed-by: Simon Horman Link: https://patch.msgid.link/20250723-netcons_test_ipv6-v1-1-41c9092f93f9@debian.org Signed-off-by: Jakub Kicinski