kernel/linux.git/tools/testing/selftests/drivers/net/lib, branch v7.2-rc1

selftests/net: Use public NetDrvContEnv API in nk_qlease fixtures

2026-06-16T01:58:01+00:00

Expose the netkit host ifname as a public attribute nk_host_ifname (symmetric with the already-public nk_guest_ifname), rename _attach_bpf to a public attach_bpf, and add a public detach_bpf helper that encapsulates the tc-filter teardown bookkeeping. Switch the fixtures to this public API. No functional change and keeps pylint happy. Signed-off-by: Daniel Borkmann Reviewed-by: Bobby Eshleman Link: https://patch.msgid.link/20260614102607.863838-3-daniel@iogearbox.net Signed-off-by: Jakub Kicinski

selftests/net: psp: support PSP in NetDrvContEnv infrastructure

2026-06-13T01:31:33+00:00

Add infrastructure to support PSP tests across network namespaces using NetDrvContEnv with netkit pairs. This enables testing PSP device association, where a non-PSP-capable device (e.g. netkit) in a guest namespace is associated with a real PSP device in the host namespace, allowing the guest to perform PSP encryption/decryption through the host's PSP hardware. The topology is: Host NS: psp_dev_local <---> nk_host | | | | (netkit pair) | | Remote NS: psp_dev_peer Guest NS: nk_guest (responder) (PSP tests) env.py: - nk_guest_ifindex is queried after moving the device into the guest namespace, so tests can use it directly for dev-assoc psp.py: - PSP device lookup supports container environments where the PSP device is on the physical interface, not the test interface - Association helpers handle dev-assoc/dev-disassoc with defer-based cleanup to prevent state leaks on test assertion failures - main() tries NetDrvContEnv with primary_rx_redirect and falls back to NetDrvEpEnv, so existing tests continue to work without the container environment Signed-off-by: Wei Wang Link: https://patch.msgid.link/20260608233118.2694144-8-weibunny.kernel@gmail.com Signed-off-by: Jakub Kicinski

selftests/net: rename _nk_host_ifname to nk_host_ifname

2026-06-13T01:31:33+00:00

Rename _nk_host_ifname to nk_host_ifname in NetDrvContEnv to make it a public attribute, matching the nk_guest_ifname rename. Tests that access the host-side netkit interface name (e.g. for cleanup after deleting the netkit pair) no longer trigger pylint protected-access warnings. Signed-off-by: Wei Wang Link: https://patch.msgid.link/20260608233118.2694144-7-weibunny.kernel@gmail.com Signed-off-by: Jakub Kicinski

selftests/net: add _find_bpf_obj() to search hw/ for BPF objects

2026-06-13T01:31:33+00:00

Add _find_bpf_obj() helper to NetDrvContEnv that searches the test directory first, then falls back to the hw/ subdirectory. This allows tests outside drivers/net/hw/ (e.g. psp.py in drivers/net/) to find BPF objects built in the hw/ directory. Update _attach_bpf() and _attach_primary_rx_redirect_bpf() to use _find_bpf_obj() for BPF object discovery. Signed-off-by: Wei Wang Link: https://patch.msgid.link/20260608233118.2694144-6-weibunny.kernel@gmail.com Signed-off-by: Jakub Kicinski

selftests: drv-net: add userns devmem RX test

2026-06-06T01:10:31+00:00

Add userns_devmem.py, which mirrors nk_devmem.py but places the netkit guest in a netns whose owning user_ns is non-init. ncdevmem is ran there via nsenter so the bind-rx call is issued with creds that hold CAP_NET_ADMIN only in the child user_ns. Without the preceding GENL_UNS_ADMIN_PERM patch the test fails at bind-rx with EPERM, but with the patch the transfer completes and tests pass. Signed-off-by: Bobby Eshleman Acked-by: Stanislav Fomichev Link: https://patch.msgid.link/20260602-nl-prov-v2-2-ad721142c641@meta.com Signed-off-by: Jakub Kicinski

selftests: drv-net: add primary_rx_redirect support to NetDrvContEnv

2026-05-19T01:49:07+00:00

When sending from a namespace that has access to a netkit device with a leased queue, the nk primary in the host namespace needs to redirect its RX to the physical device. This patch adds that redirection bpf program and teaches the harness to install it. Add primary_rx_redirect=False parameter to NetDrvContEnv.__init__(). When enabled, _attach_primary_rx_redirect_bpf() attaches a new BPF TC program (nk_primary_rx_redirect.bpf.c) to the primary (host-side) netkit interface. The program redirects non-ICMPv6 IPv6 packets to the physical NIC via bpf_redirect_neigh(), with the physical ifindex configured via the .bss map. ICMPv6 is left on the host's netkit primary so IPv6 neighbor discovery still work locally. Extract _find_bss_map_id() from _attach_bpf() into a reusable helper so other BPF attachment methods can use it. Acked-by: Stanislav Fomichev Signed-off-by: Bobby Eshleman Link: https://patch.msgid.link/20260514-tcp-dm-netkit-v5-7-408c59b91e66@meta.com Signed-off-by: Jakub Kicinski

selftests: drv-net: make attr _nk_guest_ifname public

2026-05-19T01:49:07+00:00

Subsequent patches will use the _nk_guest_ifname as a public attr for setting up devmem. Rename to nk_guest_ifname to avoid angering the linter about the '_' prefix being used for a non-private attr. Acked-by: Stanislav Fomichev Signed-off-by: Bobby Eshleman Link: https://patch.msgid.link/20260514-tcp-dm-netkit-v5-5-408c59b91e66@meta.com Signed-off-by: Jakub Kicinski

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

2026-05-07T18:19:07+00:00

Cross-merge networking fixes after downstream PR (net-7.1-rc3). Conflicts: net/ipv4/igmp.c 726fa7da2d8c ("ipv4: igmp: get rid of IGMPV3_{QQIC,MRC} and simplify calculation") c6bebaa744f7 ("ipv4: igmp: annotate data-races in igmp_heard_query()") https://lore.kernel.org/a7365e4873340f7a5e30411207de3bf9@kernel.org Adjacent changes: net/psp/psp_main.c 30cb24f97d44 ("psp: strip variable-length PSP header in psp_dev_rcv()") c2b22277ad89 ("psp: validate IPv4 header fields in psp_dev_rcv()") net/sched/sch_fq_codel.c f83e07b29246 ("net/sched: sch_fq_codel: annotate data-races from fq_codel_dump_class_stats()") 3f3aa77ff1c8 ("net/sched: add qstats_cpu_drop_inc() helper") net/wireless/pmsr.c 0f3c0a197309 ("wifi: nl80211: fix NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST usage") 410aa47fd9d3 ("wifi: cfg80211: allow suppressing FTM result reporting for PD requests") Signed-off-by: Jakub Kicinski

selftests: net: py: add tc utility

2026-05-06T01:15:29+00:00

Add a wrapper similar to existing ip, ethtool, ... commands. Tc takes a slightly different syntax. Account for that. The first user is the next patch in this series, converting so_txtime to drv-net. Pacing offload is supported by selected qdiscs only. Signed-off-by: Willem de Bruijn Link: https://patch.msgid.link/20260504174056.565319-3-willemdebruijn.kernel@gmail.com Signed-off-by: Jakub Kicinski

tools/selftests: Use a sensible timeout value for iperf3 client

2026-04-28T04:47:18+00:00

The default timeout of cmd() is 5 seconds and Iperf3Runner requests the iperf3 client to run for 10 seconds, which clearly doesn't work since commit [1] enforced the timeout parameter. Use a value derived from duration as timeout (+5 seconds for startup/teardown/various other overhead). [1] commit f0bd19316663 ("selftests: net: fix timeout passed as positional argument to communicate()") Signed-off-by: Cosmin Ratiu Signed-off-by: Steffen Klassert