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2023-06-21selftests: mptcp: join: skip check if MIB counter not supported (part 2)Matthieu Baerts
Selftests are supposed to run on any kernels, including the old ones not supporting all MPTCP features. One of them is the MPTCP MIB counters introduced in commit fc518953bc9c ("mptcp: add and use MIB counter infrastructure") and more later. The MPTCP Join selftest heavily relies on these counters. If a counter is not supported by the kernel, it is not displayed when using 'nstat -z'. We can then detect that and skip the verification. A new helper (get_counter()) has been added recently in the -net tree to do the required checks and return an error if the counter is not available. This commit is similar to the one with the same title applied in the -net tree but it modifies code only present in net-next for the moment, see the Fixes commit below. While at it, we can also remove the use of ${extra_msg} variable which is never assigned in chk_rm_tx_nr() function and use 'echo' without '-n' parameter. Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368 Fixes: 0639fa230a21 ("selftests: mptcp: add explicit check for new mibs") Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-21selftests: mptcp: add MPTCP_FULL_INFO testcasePaolo Abeni
Add a testcase explicitly triggering the newly introduce MPTCP_FULL_INFO getsockopt. Link: https://github.com/multipath-tcp/mptcp_net-next/issues/388 Signed-off-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net> Co-developed-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-21selftests: mptcp: explicitly tests aggregate countersPaolo Abeni
Update the existing sockopt test-case to do some basic checks on the newly added counters. Link: https://github.com/multipath-tcp/mptcp_net-next/issues/385 Signed-off-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-21selftests: tc-testing: add one test for flushing explicitly created chainrenmingshuai
Add the test for additional reference to chains that are explicitly created by RTM_NEWCHAIN message. The test result: 1..1 ok 1 c2b4 - soft lockup alarm will be not generated after delete the prio 0 filter of the chain This is a follow up to commit c9a82bec02c3 ("net/sched: cls_api: Fix lockup on flushing explicitly created chain"). Signed-off-by: Mingshuai Ren <renmingshuai@huawei.com> Acked-by: Pedro Tammela <pctammela@mojatatu.com> Acked-by: Victor Nogueira <victor@mojatatu.com> Link: https://lore.kernel.org/r/20230620014939.2034054-1-renmingshuai@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-21selftests: mlxsw: one_armed_router: Use port MAC for bridge addressPetr Machata
In a future patch, mlxsw will start adding RIFs to uppers of front panel port netdevices, if they have an IP address. At the time that the front panel port is enslaved to the bridge, the bridge MAC address does not have the same prefix as other interfaces in the system. On Nvidia Spectrum-1 machines all the RIFs have to have the same 38-bit MAC address prefix. Since the bridge does not obey this limitation, the RIF cannot be created, and the enslavement attempt is vetoed on the grounds of the configuration not being offloadable. The bridge eventually inherits MAC address from its first member, after the enslavement is acked. A number of (mainly VXLAN) selftests already work around the problem by setting the MAC address to whatever it will eventually be anyway. Do the same for this selftest. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Danielle Ratson <danieller@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-21selftests: mlxsw: vxlan: Disable IPv6 autogen on bridgesPetr Machata
In a future patch, mlxsw will start adding RIFs to uppers of front panel port netdevices, if they have an IP address. At the time that the front panel port is enslaved to the bridge (this holds for all bridges used here), the bridge MAC address does not have the same prefix as other interfaces in the system. On Nvidia Spectrum-1 machines all the RIFs have to have the same 38-bit MAC address prefix. Since the bridge does not obey this limitation, the RIF cannot be created, and the enslavement attempt is vetoed on the grounds of the configuration not being offloadable. The selftest itself however checks various aspects of VXLAN offloading and the bridges do not need to participate in routing traffic. The IP addresses or the RIFs are irrelevant. Fix by disabling automatic IPv6 address generation for the HW-offloaded bridges in this selftest, thus exempting them from mlxsw router attention. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Danielle Ratson <danieller@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-21selftests: mlxsw: spectrum: q_in_vni_veto: Disable IPv6 autogen on a bridgePetr Machata
In a future patch, mlxsw will start adding RIFs to uppers of front panel port netdevices, if they have an IP address. At the time that the front panel port is enslaved to the bridge, the bridge MAC address does not have the same prefix as other interfaces in the system. On Nvidia Spectrum-1 machines all the RIFs have to have the same 38-bit MAC address prefix. Since the bridge does not obey this limitation, the RIF cannot be created, and the enslavement attempt is vetoed on the grounds of the configuration not being offloadable. The selftest itself however checks vetoing of a different aspect of the configuration and the bridge does not need to participate in routing traffic. The IP address or the RIF are irrelevant. Fix by disabling automatic IPv6 address generation for the HW-offloaded bridge in this selftest, thus exempting it from mlxsw router attention. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Danielle Ratson <danieller@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-21selftests: mlxsw: qos_mc_aware: Disable IPv6 autogen on bridgesPetr Machata
In a future patch, mlxsw will start adding RIFs to uppers of front panel port netdevices, if they have an IP address. At the time that the front panel port is enslaved to the bridge (this holds for both bridges used here), the bridge MAC address does not have the same prefix as other interfaces in the system. On Nvidia Spectrum-1 machines all the RIFs have to have the same 38-bit MAC address prefix. Since the bridge does not obey this limitation, the RIF cannot be created, and the enslavement attempt is vetoed on the grounds of the configuration not being offloadable. The selftest itself however checks traffic prioritization and scheduling, and the bridges serve for their L2 forwarding capabilities, and do not need to participate in routing traffic. The IP addresses or the RIFs are irrelevant. Fix by disabling automatic IPv6 address generation for the HW-offloaded bridges in this selftest, thus exempting them from mlxsw router attention. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Danielle Ratson <danieller@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-21selftests: mlxsw: qos_ets_strict: Disable IPv6 autogen on bridgesPetr Machata
In a future patch, mlxsw will start adding RIFs to uppers of front panel port netdevices, if they have an IP address. At the time that the front panel port is enslaved to the bridge (this holds for both bridges used here), the bridge MAC address does not have the same prefix as other interfaces in the system. On Nvidia Spectrum-1 machines all the RIFs have to have the same 38-bit MAC address prefix. Since the bridge does not obey this limitation, the RIF cannot be created, and the enslavement attempt is vetoed on the grounds of the configuration not being offloadable. The selftest itself however checks traffic prioritization and scheduling, and the bridges serve for their L2 forwarding capabilities, and do not need to participate in routing traffic. The IP addresses or the RIFs are irrelevant. Fix by disabling automatic IPv6 address generation for the HW-offloaded bridges in this selftest, thus exempting them from mlxsw router attention. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Danielle Ratson <danieller@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-21selftests: mlxsw: qos_dscp_bridge: Disable IPv6 autogen on a bridgePetr Machata
In a future patch, mlxsw will start adding RIFs to uppers of front panel port netdevices, if they have an IP address. At the time that the front panel port is enslaved to the bridge, the bridge MAC address does not have the same prefix as other interfaces in the system. On Nvidia Spectrum-1 machines all the RIFs have to have the same 38-bit MAC address prefix. Since the bridge does not obey this limitation, the RIF cannot be created, and the enslavement attempt is vetoed on the grounds of the configuration not being offloadable. The selftest itself however checks DCB DSCP-based prioritization, and the bridge serves for its L2 forwarding capabilities, and does not need to participate in routing traffic. The IP address or the RIF are irrelevant. Fix by disabling automatic IPv6 address generation for the HW-offloaded bridge in this selftest, thus exempting it from mlxsw router attention. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Danielle Ratson <danieller@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-21selftests: mlxsw: mirror_gre_scale: Disable IPv6 autogen on a bridgePetr Machata
In a future patch, mlxsw will start adding RIFs to uppers of front panel port netdevices, if they have an IP address. At the time that the front panel port is enslaved to the bridge, the bridge MAC address does not have the same prefix as other interfaces in the system. On Nvidia Spectrum-1 machines all the RIFs have to have the same 38-bit MAC address prefix. Since the bridge does not obey this limitation, the RIF cannot be created, and the enslavement attempt is vetoed on the grounds of the configuration not being offloadable. The selftest itself however checks how many mirroring sessions a machine is capable of offloading. The IP address or the RIF are irrelevant. Fix by disabling automatic IPv6 address generation for the HW-offloaded bridge in this selftest, thus exempting it from mlxsw router attention. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Danielle Ratson <danieller@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-21selftests: mlxsw: extack: Disable IPv6 autogen on bridgesPetr Machata
In a future patch, mlxsw will start adding RIFs to uppers of front panel port netdevices, if they have an IP address. At the time that the front panel port is enslaved to the bridge (this holds for all bridges used here), the bridge MAC address does not have the same prefix as other interfaces in the system. On Nvidia Spectrum-1 machines all the RIFs have to have the same 38-bit MAC address prefix. Since the bridge does not obey this limitation, the RIF cannot be created, and the enslavement attempt is vetoed on the grounds of the configuration not being offloadable. The selftest itself however checks whether a different vetoed aspect of the configuration provides an extack. The IP address or the RIF are irrelevant. Fix by disabling automatic IPv6 address generation for the HW-offloaded bridges in this selftest, thus exempting them from mlxsw router attention. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Danielle Ratson <danieller@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-21selftests: mlxsw: q_in_q_veto: Disable IPv6 autogen on bridgesPetr Machata
In a future patch, mlxsw will start adding RIFs to uppers of front panel port netdevices, if they have an IP address. The swp enslavement to the 802.1ad bridge is not allowed, because RIFs are not allowed to be created for 802.1ad bridges, but the address indicates one needs to be created. Thus the veto selftests fail already during the port enslavement. Then the attempt to create a VLAN on top of the same bridge is not vetoed, because the bridge is not related to mlxsw, and the selftest fails. Fix by disabling automatic IPv6 address generation for the bridges in this selftest, thus exempting them from the mlxsw router attention. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Amit Cohen <amcohen@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-21selftests: forwarding: router_bridge: Use port MAC for bridge addressPetr Machata
In a future patch, mlxsw will start adding RIFs to uppers of front panel port netdevices, if they have an IP address. At the time that the front panel port is enslaved to the bridge, the bridge MAC address does not have the same prefix as other interfaces in the system. On Nvidia Spectrum-1 machines all the RIFs have to have the same 38-bit MAC address prefix. Since the bridge does not obey this limitation, the RIF cannot be created, and the enslavement attempt is vetoed on the grounds of the configuration not being offloadable. The bridge eventually inherits MAC address from its first member, after the enslavement is acked. A number of (mainly VXLAN) selftests already work around the problem by setting the MAC address to whatever it will eventually be anyway. Do the same here. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Danielle Ratson <danieller@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-21selftests: forwarding: mirror_gre_*: Use port MAC for bridge addressPetr Machata
In a future patch, mlxsw will start adding RIFs to uppers of front panel port netdevices, if they have an IP address. At the time that the front panel port is enslaved to the bridge, the bridge MAC address does not have the same prefix as other interfaces in the system. On Nvidia Spectrum-1 machines all the RIFs have to have the same 38-bit MAC address prefix. Since the bridge does not obey this limitation, the RIF cannot be created, and the enslavement attempt is vetoed on the grounds of the configuration not being offloadable. The bridge eventually inherits MAC address from its first member, after the enslavement is acked. A number of (mainly VXLAN) selftests already work around the problem by setting the MAC address to whatever it will eventually be anyway. Do the same for several mirror_gre selftests. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Danielle Ratson <danieller@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-21selftests: forwarding: mirror_gre_*: Disable IPv6 autogen on bridgesPetr Machata
In a future patch, mlxsw will start adding RIFs to uppers of front panel port netdevices, if they have an IP address. At the time that the front panel port is enslaved to the bridge, the bridge MAC address does not have the same prefix as other interfaces in the system. On Nvidia Spectrum-1 machines all the RIFs have to have the same 38-bit MAC address prefix. Since the bridge does not obey this limitation, the RIF cannot be created, and the enslavement attempt is vetoed on the grounds of the configuration not being offloadable. These two selftests however check mirroring traffic to a gretap netdevice. The bridge here does not participate in routing traffic and the IP address or the RIF are irrelevant. Fix by disabling automatic IPv6 address generation for the HW-offloaded bridges in these selftests, thus exempting them from mlxsw router attention. Since the bridges are only used for L2 forwarding, this change should not hinder usefulness of this selftest for testing SW datapath or HW datapaths in other devices. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Danielle Ratson <danieller@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-21selftests: forwarding: pedit_dsfield: Disable IPv6 autogen on a bridgePetr Machata
In a future patch, mlxsw will start adding RIFs to uppers of front panel port netdevices, if they have an IP address. At the time that the front panel port is enslaved to the bridge, the bridge MAC address does not have the same prefix as other interfaces in the system. On Nvidia Spectrum-1 machines all the RIFs have to have the same 38-bit MAC address prefix. Since the bridge does not obey this limitation, the RIF cannot be created, and the enslavement attempt is vetoed on the grounds of the configuration not being offloadable. The selftest itself however checks whether skbedit changes packet priority as appropriate. The bridge thus does not need to participate in routing traffic and the IP address or the RIF are irrelevant. Fix by disabling automatic IPv6 address generation for the HW-offloaded bridge in this selftest, thus exempting it from mlxsw router attention. Since the bridge is only used for L2 forwarding, this change should not hinder usefulness of this selftest for testing SW datapath or HW datapaths in other devices. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Danielle Ratson <danieller@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-21selftests: forwarding: skbedit_priority: Disable IPv6 autogen on a bridgePetr Machata
In a future patch, mlxsw will start adding RIFs to uppers of front panel port netdevices, if they have an IP address. At the time that the front panel port is enslaved to the bridge, the bridge MAC address does not have the same prefix as other interfaces in the system. On Nvidia Spectrum-1 machines all the RIFs have to have the same 38-bit MAC address prefix. Since the bridge does not obey this limitation, the RIF cannot be created, and the enslavement attempt is vetoed on the grounds of the configuration not being offloadable. The selftest itself however checks operation of pedit on IPv4 and IPv6 dsfield and its parts. The bridge thus does not need to participate in routing traffic and the IP address or the RIF are irrelevant. Fix by disabling automatic IPv6 address generation for the HW-offloaded bridge in this selftest, thus exempting it from mlxsw router attention. Since the bridge is only used for L2 forwarding, this change should not hinder usefulness of this selftest for testing SW datapath or HW datapaths in other devices. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Danielle Ratson <danieller@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-21selftests: forwarding: dual_vxlan_bridge: Disable IPv6 autogen on bridgesPetr Machata
In a future patch, mlxsw will start adding RIFs to uppers of front panel port netdevices, if they have an IP address. This will cause this selftest to fail spuriously. The swp enslavement to the 802.1ad bridge is not allowed, because RIFs are not allowed to be created for 802.1ad bridges, but the address indicates one needs to be created. Fix by disabling automatic IPv6 address generation for the HW-offloaded bridge in this selftest, thus exempting it from mlxsw router attention. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Amit Cohen <amcohen@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-21selftests: forwarding: q_in_vni: Disable IPv6 autogen on bridgesPetr Machata
In a future patch, mlxsw will start adding RIFs to uppers of front panel port netdevices, if they have an IP address. This will cause this selftest to fail spuriously. The swp enslavement to the 802.1ad bridge is not allowed, because RIFs are not allowed to be created for 802.1ad bridges, but the address indicates one needs to be created. Fix by disabling automatic IPv6 address generation for the HW-offloaded bridge in this selftest, thus exempting it from mlxsw router attention. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Amit Cohen <amcohen@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-20ptp: Add .getmaxphase callback to ptp_clock_infoRahul Rameshbabu
Enables advertisement of the maximum offset supported by the phase control functionality of PHCs. The callback is used to return an error if an offset not supported by the PHC is used in ADJ_OFFSET. The ioctls PTP_CLOCK_GETCAPS and PTP_CLOCK_GETCAPS2 now advertise the maximum offset a PHC's phase control functionality is capable of supporting. Introduce new sysfs node, max_phase_adjustment. Cc: Jakub Kicinski <kuba@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Maciek Machnikowski <maciek@machnikowski.net> Signed-off-by: Rahul Rameshbabu <rrameshbabu@nvidia.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-06-20testptp: Add support for testing ptp_clock_info .adjphase callbackRahul Rameshbabu
Invoke clock_adjtime syscall with tx.modes set with ADJ_OFFSET when testptp is invoked with a phase adjustment offset value. Support seconds and nanoseconds for the offset value. Cc: Jakub Kicinski <kuba@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Maciek Machnikowski <maciek@machnikowski.net> Signed-off-by: Rahul Rameshbabu <rrameshbabu@nvidia.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-06-20testptp: Remove magic numbers related to nanosecond to second conversionRahul Rameshbabu
Use existing NSEC_PER_SEC declaration in place of hardcoded magic numbers. Cc: Jakub Kicinski <kuba@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Maciek Machnikowski <maciek@machnikowski.net> Signed-off-by: Rahul Rameshbabu <rrameshbabu@nvidia.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-06-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR. Conflicts: include/linux/mlx5/driver.h 617f5db1a626 ("RDMA/mlx5: Fix affinity assignment") dc13180824b7 ("net/mlx5: Enable devlink port for embedded cpu VF vports") https://lore.kernel.org/all/20230613125939.595e50b8@canb.auug.org.au/ tools/testing/selftests/net/mptcp/mptcp_join.sh 47867f0a7e83 ("selftests: mptcp: join: skip check if MIB counter not supported") 425ba803124b ("selftests: mptcp: join: support RM_ADDR for used endpoints or not") 45b1a1227a7a ("mptcp: introduces more address related mibs") 0639fa230a21 ("selftests: mptcp: add explicit check for new mibs") https://lore.kernel.org/netdev/20230609-upstream-net-20230610-mptcp-selftests-support-old-kernels-part-3-v1-0-2896fe2ee8a3@tessares.net/ No adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-15Merge tag 'net-6.4-rc7' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Jakub Kicinski: "Including fixes from wireless, and netfilter. Selftests excluded - we have 58 patches and diff of +442/-199, which isn't really small but perhaps with the exception of the WiFi locking change it's old(ish) bugs. We have no known problems with v6.4. The selftest changes are rather large as MPTCP folks try to apply Greg's guidance that selftest from torvalds/linux should be able to run against stable kernels. Last thing I should call out is the DCCP/UDP-lite deprecation notices. We are fairly sure those are dead, but if we're wrong reverting them back in won't be fun. Current release - regressions: - wifi: - cfg80211: fix double lock bug in reg_wdev_chan_valid() - iwlwifi: mvm: spin_lock_bh() to fix lockdep regression Current release - new code bugs: - handshake: remove fput() that causes use-after-free Previous releases - regressions: - sched: cls_u32: fix reference counter leak leading to overflow - sched: cls_api: fix lockup on flushing explicitly created chain Previous releases - always broken: - nf_tables: integrate pipapo into commit protocol - nf_tables: incorrect error path handling with NFT_MSG_NEWRULE, fix dangling pointer on failure - ping6: fix send to link-local addresses with VRF - sched: act_pedit: parse L3 header for L4 offset, the skb may not have the offset saved - sched: act_ct: fix promotion of offloaded unreplied tuple - sched: refuse to destroy an ingress and clsact Qdiscs if there are lockless change operations in flight - wifi: mac80211: fix handful of bugs in multi-link operation - ipvlan: fix bound dev checking for IPv6 l3s mode - eth: enetc: correct the indexes of highest and 2nd highest TCs - eth: ice: fix XDP memory leak when NIC is brought up and down Misc: - add deprecation notices for UDP-lite and DCCP - selftests: mptcp: skip tests not supported by old kernels - sctp: handle invalid error codes without calling BUG()" * tag 'net-6.4-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (91 commits) dccp: Print deprecation notice. udplite: Print deprecation notice. octeon_ep: Add missing check for ioremap selftests/ptp: Fix timestamp printf format for PTP_SYS_OFFSET net: ethernet: stmicro: stmmac: fix possible memory leak in __stmmac_open net: tipc: resize nlattr array to correct size sfc: fix XDP queues mode with legacy IRQ net: macsec: fix double free of percpu stats net: lapbether: only support ethernet devices MAINTAINERS: add reviewers for SMC Sockets s390/ism: Fix trying to free already-freed IRQ by repeated ism_dev_exit() net: dsa: felix: fix taprio guard band overflow at 10Mbps with jumbo frames net/sched: cls_api: Fix lockup on flushing explicitly created chain ice: Fix ice module unload net/handshake: remove fput() that causes use-after-free selftests: forwarding: hw_stats_l3: Set addrgenmode in a separate step net/sched: qdisc_destroy() old ingress and clsact Qdiscs before grafting net/sched: Refactor qdisc_graft() for ingress and clsact Qdiscs net/sched: act_ct: Fix promotion of offloaded unreplied tuple wifi: iwlwifi: mvm: spin_lock_bh() to fix lockdep regression ...
2023-06-15selftests/ptp: Fix timestamp printf format for PTP_SYS_OFFSETAlex Maftei
Previously, timestamps were printed using "%lld.%u" which is incorrect for nanosecond values lower than 100,000,000 as they're fractional digits, therefore leading zeros are meaningful. This patch changes the format strings to "%lld.%09u" in order to add leading zeros to the nanosecond value. Fixes: 568ebc5985f5 ("ptp: add the PTP_SYS_OFFSET ioctl to the testptp program") Fixes: 4ec54f95736f ("ptp: Fix compiler warnings in the testptp utility") Fixes: 6ab0e475f1f3 ("Documentation: fix misc. warnings") Signed-off-by: Alex Maftei <alex.maftei@amd.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/20230615083404.57112-1-alex.maftei@amd.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-15tools: ynl: work around stale system headersJakub Kicinski
The inability to include the uAPI headers directly in tools/ is one of the bigger annoyances of compiling user space code. Most projects trade the pain for smaller inconvenience of having to copy the headers under tools/include. In case of netlink headers I think that we can avoid both. Netlink family headers are simple and should be self-contained. We can try to twiddle the Makefile a little to force-include just the family header, and use system headers for the rest. This works fairly well. There are two warts - for some reason if we specify -include $path/family.h as a compilation flag, the #ifdef header guard does not seem to work. So we need to throw the guard in on the command line as well. Seems like GCC detects that the header is different and tries to include both. Second problem is that make wants hash sign to be escaped or not depending on the version. Sigh. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-06-14selftests: forwarding: hw_stats_l3: Set addrgenmode in a separate stepDanielle Ratson
Setting the IPv6 address generation mode of a net device during its creation never worked, but after commit b0ad3c179059 ("rtnetlink: call validate_linkmsg in rtnl_create_link") it explicitly fails [1]. The failure is caused by the fact that validate_linkmsg() is called before the net device is registered, when it still does not have an 'inet6_dev'. Likewise, raising the net device before setting the address generation mode is meaningless, because by the time the mode is set, the address has already been generated. Therefore, fix the test to first create the net device, then set its IPv6 address generation mode and finally bring it up. [1] # ip link add name mydev addrgenmode eui64 type dummy RTNETLINK answers: Address family not supported by protocol Fixes: ba95e7930957 ("selftests: forwarding: hw_stats_l3: Add a new test") Signed-off-by: Danielle Ratson <danieller@nvidia.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: Petr Machata <petrm@nvidia.com> Link: https://lore.kernel.org/r/f3b05d85b2bc0c3d6168fe8f7207c6c8365703db.1686580046.git.petrm@nvidia.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-06-13selftests/tc-testing: Remove configs that no longer existVlad Buslov
Some qdiscs and classifiers have recently been retired from kernel. However, tc-testing config is still cluttered with them which causes noise when using merge_config.sh script to update existing config for tc-testing compatibility. Remove the config settings for affected qdiscs and classifiers. Fixes: fb38306ceb9e ("net/sched: Retire ATM qdisc") Fixes: 051d44209842 ("net/sched: Retire CBQ qdisc") Fixes: bbe77c14ee61 ("net/sched: Retire dsmark qdisc") Fixes: 265b4da82dbf ("net/sched: Retire rsvp classifier") Fixes: 8c710f75256b ("net/sched: Retire tcindex classifier") Signed-off-by: Vlad Buslov <vladbu@nvidia.com> Reviewed-by: Pedro Tammela <pctammela@mojatatu.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-13selftests/tc-testing: Fix SFB db testVlad Buslov
Setting very small value of db like 10ms introduces rounding errors when converting to/from jiffies on some kernel configs. For example, on 250hz the actual value will be set to 12ms which causes the test to fail: # $ sudo ./tdc.py -d eth2 -e 3410 # -- ns/SubPlugin.__init__ # Test 3410: Create SFB with db setting # # All test results: # # 1..1 # not ok 1 3410 - Create SFB with db setting # Could not match regex pattern. Verify command output: # qdisc sfb 1: root refcnt 2 rehash 600s db 12ms limit 1000p max 25p target 20p increment 0.000503548 decrement 4.57771e-05 penalty_rate 10pps penalty_burst 20p Set the value to 100ms instead which currently seem to work on 100hz, 250hz, 300hz and 1000hz kernel configs. Fixes: 6ad92dc56fca ("selftests/tc-testing: add selftests for sfb qdisc") Signed-off-by: Vlad Buslov <vladbu@nvidia.com> Reviewed-by: Pedro Tammela <pctammela@mojatatu.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-13selftests/tc-testing: Fix Error: failed to find target LOGVlad Buslov
Add missing netfilter config dependency. Fixes following example error when running tests via tdc.sh for all XT tests: # $ sudo ./tdc.py -d eth2 -e 2029 # Test 2029: Add xt action with log-prefix # exit: 255 # exit: 0 # failed to find target LOG # # bad action parsing # parse_action: bad value (7:xt)! # Illegal "action" # # -----> teardown stage *** Could not execute: "$TC actions flush action xt" # # -----> teardown stage *** Error message: "Error: Cannot flush unknown TC action. # We have an error flushing # " # returncode 1; expected [0] # # -----> teardown stage *** Aborting test run. # # <_io.BufferedReader name=3> *** stdout *** # # <_io.BufferedReader name=5> *** stderr *** # "-----> teardown stage" did not complete successfully # Exception <class '__main__.PluginMgrTestFail'> ('teardown', ' failed to find target LOG\n\nbad action parsing\nparse_action: bad value (7:xt)!\nIllegal "action"\n', '"-----> teardown stage" did not complete successfully') (caught in test_runner, running test 2 2029 Add xt action with log-prefix stage teardown) # --------------- # traceback # File "/images/src/linux/tools/testing/selftests/tc-testing/./tdc.py", line 495, in test_runner # res = run_one_test(pm, args, index, tidx) # File "/images/src/linux/tools/testing/selftests/tc-testing/./tdc.py", line 434, in run_one_test # prepare_env(args, pm, 'teardown', '-----> teardown stage', tidx['teardown'], procout) # File "/images/src/linux/tools/testing/selftests/tc-testing/./tdc.py", line 245, in prepare_env # raise PluginMgrTestFail( # --------------- # accumulated output for this test: # failed to find target LOG # # bad action parsing # parse_action: bad value (7:xt)! # Illegal "action" # # --------------- # # All test results: # # 1..1 # ok 1 2029 - Add xt action with log-prefix # skipped - "-----> teardown stage" did not complete successfully Fixes: 910d504bc187 ("selftests/tc-testings: add selftests for xt action") Signed-off-by: Vlad Buslov <vladbu@nvidia.com> Reviewed-by: Pedro Tammela <pctammela@mojatatu.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-13selftests/tc-testing: Fix Error: Specified qdisc kind is unknown.Vlad Buslov
All TEQL tests assume that sch_teql module is loaded. Load module in tdc.sh before running qdisc tests. Fixes following example error when running tests via tdc.sh for all TEQL tests: # $ sudo ./tdc.py -d eth2 -e 84a0 # -- ns/SubPlugin.__init__ # Test 84a0: Create TEQL with default setting # exit: 2 # exit: 0 # Error: Specified qdisc kind is unknown. # # -----> teardown stage *** Could not execute: "$TC qdisc del dev $DUMMY handle 1: root" # # -----> teardown stage *** Error message: "Error: Invalid handle. # " # returncode 2; expected [0] # # -----> teardown stage *** Aborting test run. # # <_io.BufferedReader name=3> *** stdout *** # # <_io.BufferedReader name=5> *** stderr *** # "-----> teardown stage" did not complete successfully # Exception <class '__main__.PluginMgrTestFail'> ('teardown', 'Error: Specified qdisc kind is unknown.\n', '"-----> teardown stage" did not complete successfully') (caught in test_runner, running test 2 84a0 Create TEQL with default setting stage teardown) # --------------- # traceback # File "/images/src/linux/tools/testing/selftests/tc-testing/./tdc.py", line 495, in test_runner # res = run_one_test(pm, args, index, tidx) # File "/images/src/linux/tools/testing/selftests/tc-testing/./tdc.py", line 434, in run_one_test # prepare_env(args, pm, 'teardown', '-----> teardown stage', tidx['teardown'], procout) # File "/images/src/linux/tools/testing/selftests/tc-testing/./tdc.py", line 245, in prepare_env # raise PluginMgrTestFail( # --------------- # accumulated output for this test: # Error: Specified qdisc kind is unknown. # # --------------- # # All test results: # # 1..1 # ok 1 84a0 - Create TEQL with default setting # skipped - "-----> teardown stage" did not complete successfully Fixes: cc62fbe114c9 ("selftests/tc-testing: add selftests for teql qdisc") Signed-off-by: Vlad Buslov <vladbu@nvidia.com> Reviewed-by: Victor Nogueira <victor@mojatatu.com> Reviewed-by: Pedro Tammela <pctammela@mojatatu.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-13tools: ynl-gen: inherit policy in multi-attrJakub Kicinski
Instead of reimplementing policies in MutliAttr for every underlying type forward the calls to the base type. This will be needed for DPLL which uses a multi-attr nest, and currently gets an invalid NLA_NEST policy generated. Reviewed-by: Jacob Keller <Jacob.e.keller@intel.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-13tools: ynl-gen: correct enum policiesJakub Kicinski
Scalar range validation assumes enums start at 0. Teach it to properly calculate the value range. Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-13selftests: forwarding: Fix layer 2 miss test syntaxIdo Schimmel
The test currently specifies "l2_miss" as "true" / "false", but the version that eventually landed in iproute2 uses "1" / "0" [1]. Align the test accordingly. [1] https://lore.kernel.org/netdev/20230607153550.3829340-1-idosch@nvidia.com/ Fixes: 8c33266ae26a ("selftests: forwarding: Add layer 2 miss test cases") Signed-off-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: Petr Machata <petrm@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-06-12selftests: net: add tc flower cfm testZahari Doychev
New cfm flower test case is added to the net forwarding selfttests. Example output: # ./tc_flower_cfm.sh p1 p2 TEST: CFM opcode match test [ OK ] TEST: CFM level match test [ OK ] TEST: CFM opcode and level match test [ OK ] Signed-off-by: Zahari Doychev <zdoychev@maxlinear.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-12selftests: mptcp: join: skip mixed tests if not supportedMatthieu Baerts
Selftests are supposed to run on any kernels, including the old ones not supporting all MPTCP features. One of them is the support of a mix of subflows in v4 and v6 by the in-kernel PM introduced by commit b9d69db87fb7 ("mptcp: let the in-kernel PM use mixed IPv4 and IPv6 addresses"). It looks like there is no external sign we can use to predict the expected behaviour. Instead of accepting different behaviours and thus not really checking for the expected behaviour, we are looking here for a specific kernel version. That's not ideal but it looks better than removing the test because it cannot support older kernel versions. Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368 Fixes: ad3493746ebe ("selftests: mptcp: add test-cases for mixed v4/v6 subflows") Cc: stable@vger.kernel.org Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-12selftests: mptcp: join: uniform listener testsMatthieu Baerts
The alignment was different from the other tests because tabs were used instead of spaces. While at it, also use 'echo' instead of 'printf' to print the result to keep the same style as done in the other sub-tests. And, even if it should be better with, also remove 'stdbuf' and sed's '--unbuffered' option because they are not used in the other subtests and they are not available when using a minimal environment with busybox. Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368 Fixes: 178d023208eb ("selftests: mptcp: listener test for in-kernel PM") Cc: stable@vger.kernel.org Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-12selftests: mptcp: join: skip PM listener tests if not supportedMatthieu Baerts
Selftests are supposed to run on any kernels, including the old ones not supporting all MPTCP features. One of them is the support of PM listener events introduced by commit f8c9dfbd875b ("mptcp: add pm listener events"). It is possible to look for "mptcp_event_pm_listener" in kallsyms to know in advance if the kernel supports this feature. Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368 Fixes: 178d023208eb ("selftests: mptcp: listener test for in-kernel PM") Cc: stable@vger.kernel.org Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-12selftests: mptcp: join: skip MPC backups tests if not supportedMatthieu Baerts
Selftests are supposed to run on any kernels, including the old ones not supporting all MPTCP features. One of them is the support of sending an MP_PRIO signal for the initial subflow, introduced by commit c157bbe776b7 ("mptcp: allow the in kernel PM to set MPC subflow priority"). It is possible to look for "mptcp_subflow_send_ack" in kallsyms because it was needed to introduce the mentioned feature. So we can know in advance if the feature is supported instead of trying and accepting any results. Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368 Fixes: 914f6a59b10f ("selftests: mptcp: add MPC backup tests") Cc: stable@vger.kernel.org Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-12selftests: mptcp: join: skip fail tests if not supportedMatthieu Baerts
Selftests are supposed to run on any kernels, including the old ones not supporting all MPTCP features. One of them is the support of the MP_FAIL / infinite mapping introduced by commit 1e39e5a32ad7 ("mptcp: infinite mapping sending") and the following ones. It is possible to look for one of the infinite mapping counters to know in advance if the this feature is available. Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368 Fixes: b6e074e171bc ("selftests: mptcp: add infinite map testcase") Cc: stable@vger.kernel.org Fixes: 2ba18161d407 ("selftests: mptcp: add MP_FAIL reset testcase") Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-12selftests: mptcp: join: skip userspace PM tests if not supportedMatthieu Baerts
Selftests are supposed to run on any kernels, including the old ones not supporting all MPTCP features. One of them is the support of the userspace PM introduced by commit 4638de5aefe5 ("mptcp: handle local addrs announced by userspace PMs") and the following ones. It is possible to look for the MPTCP pm_type's sysctl knob to know in advance if the userspace PM is available. Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368 Fixes: 5ac1d2d63451 ("selftests: mptcp: Add tests for userspace PM type") Cc: stable@vger.kernel.org Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-12selftests: mptcp: join: skip fullmesh flag tests if not supportedMatthieu Baerts
Selftests are supposed to run on any kernels, including the old ones not supporting all MPTCP features. One of them is the support of the fullmesh flag for the in-kernel PM introduced by commit 2843ff6f36db ("mptcp: remote addresses fullmesh") and commit 1a0d6136c5f0 ("mptcp: local addresses fullmesh"). It looks like there is no easy external sign we can use to predict the expected behaviour. We could add the flag and then check if it has been added but for that, and for each fullmesh test, we would need to setup a new environment, do the checks, clean it and then only start the test from yet another clean environment. To keep it simple and avoid introducing new issues, we look for a specific kernel version. That's not ideal but an acceptable solution for this case. Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368 Fixes: 6a0653b96f5d ("selftests: mptcp: add fullmesh setting tests") Cc: stable@vger.kernel.org Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-12selftests: mptcp: join: skip backup if set flag on ID not supportedMatthieu Baerts
Selftests are supposed to run on any kernels, including the old ones not supporting all MPTCP features. Commit bccefb762439 ("selftests: mptcp: simplify pm_nl_change_endpoint") has simplified the way the backup flag is set on an endpoint. Instead of doing: ./pm_nl_ctl set 10.0.2.1 flags backup Now we do: ./pm_nl_ctl set id 1 flags backup The new way is easier to maintain but it is also incompatible with older kernels not supporting the implicit endpoints putting in place the infrastructure to set flags per ID, hence the second Fixes tag. Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368 Fixes: bccefb762439 ("selftests: mptcp: simplify pm_nl_change_endpoint") Cc: stable@vger.kernel.org Fixes: 4cf86ae84c71 ("mptcp: strict local address ID selection") Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-12selftests: mptcp: join: skip implicit tests if not supportedMatthieu Baerts
Selftests are supposed to run on any kernels, including the old ones not supporting all MPTCP features. One of them is the support of the implicit endpoints introduced by commit d045b9eb95a9 ("mptcp: introduce implicit endpoints"). It is possible to look for "mptcp_subflow_send_ack" in kallsyms because it was needed to introduce the mentioned feature. So we can know in advance if the feature is supported instead of trying and accepting any results. Note that here and in the following commits, we re-do the same check for each sub-test of the same function for a few reasons. The main one is not to break the ID assign to each test in order to be able to easily compare results between different kernel versions. Also, we can still run a specific test even if it is skipped. Another reason is that it makes it clear during the review that a specific subtest will be skipped or not under certain conditions. At the end, it looks OK to call the exact same helper multiple times: it is not a critical path and it is the same code that is executed, not really more cases to maintain. Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368 Fixes: 69c6ce7b6eca ("selftests: mptcp: add implicit endpoint test case") Cc: stable@vger.kernel.org Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-12selftests: mptcp: join: support RM_ADDR for used endpoints or notMatthieu Baerts
Selftests are supposed to run on any kernels, including the old ones not supporting all MPTCP features. At some points, a new feature caused internal behaviour changes we are verifying in the selftests, see the Fixes tag below. It was not a UAPI change but because in these selftests, we check some internal behaviours, it is normal we have to adapt them from time to time after having added some features. It looks like there is no external sign we can use to predict the expected behaviour. Instead of accepting different behaviours and thus not really checking for the expected behaviour, we are looking here for a specific kernel version. That's not ideal but it looks better than removing the test because it cannot support older kernel versions. Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368 Fixes: 6fa0174a7c86 ("mptcp: more careful RM_ADDR generation") Cc: stable@vger.kernel.org Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-12selftests: mptcp: join: skip Fastclose tests if not supportedMatthieu Baerts
Selftests are supposed to run on any kernels, including the old ones not supporting all MPTCP features. One of them is the support of MP_FASTCLOSE introduced in commit f284c0c77321 ("mptcp: implement fastclose xmit path"). If the MIB counter is not available, the test cannot be verified and the behaviour will not be the expected one. So we can skip the test if the counter is missing. Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368 Fixes: 01542c9bf9ab ("selftests: mptcp: add fastclose testcase") Cc: stable@vger.kernel.org Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-12selftests: mptcp: join: support local endpoint being tracked or notMatthieu Baerts
Selftests are supposed to run on any kernels, including the old ones not supporting all MPTCP features. At some points, a new feature caused internal behaviour changes we are verifying in the selftests, see the Fixes tag below. It was not a uAPI change but because in these selftests, we check some internal behaviours, it is normal we have to adapt them from time to time after having added some features. It is possible to look for "mptcp_pm_subflow_check_next" in kallsyms because it was needed to introduce the mentioned feature. So we can know in advance what the behaviour we are expecting here instead of supporting the two behaviours. Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368 Fixes: 86e39e04482b ("mptcp: keep track of local endpoint still available for each msk") Cc: stable@vger.kernel.org Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-12selftests: mptcp: join: skip test if iptables/tc cmds failMatthieu Baerts
Selftests are supposed to run on any kernels, including the old ones not supporting all MPTCP features. Some tests are using IPTables and/or TC commands to force some behaviours. If one of these commands fails -- likely because some features are not available due to missing kernel config -- we should intercept the error and skip the tests requiring these features. Note that if we expect to have these features available and if SELFTESTS_MPTCP_LIB_EXPECT_ALL_FEATURES env var is set to 1, the tests will be marked as failed instead of skipped. This patch also replaces the 'exit 1' by 'return 1' not to stop the selftest in the middle without the conclusion if there is an issue with NF or TC. Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368 Fixes: 8d014eaa9254 ("selftests: mptcp: add ADD_ADDR timeout test case") Cc: stable@vger.kernel.org Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-06-12selftests: mptcp: join: skip check if MIB counter not supportedMatthieu Baerts
Selftests are supposed to run on any kernels, including the old ones not supporting all MPTCP features. One of them is the MPTCP MIB counters introduced in commit fc518953bc9c ("mptcp: add and use MIB counter infrastructure") and more later. The MPTCP Join selftest heavily relies on these counters. If a counter is not supported by the kernel, it is not displayed when using 'nstat -z'. We can then detect that and skip the verification. A new helper (get_counter()) has been added to do the required checks and return an error if the counter is not available. Note that if we expect to have these features available and if SELFTESTS_MPTCP_LIB_EXPECT_ALL_FEATURES env var is set to 1, the tests will be marked as failed instead of skipped. This new helper also makes sure we get the exact counter we want to avoid issues we had in the past, e.g. with MPTcpExtRmAddr and MPTcpExtRmAddrDrop sharing the same prefix. While at it, we uniform the way we fetch a MIB counter. Note for the backports: we rarely change these modified blocks so if there is are conflicts, it is very likely because a counter is not used in the older kernels and we don't need that chunk. Link: https://github.com/multipath-tcp/mptcp_net-next/issues/368 Fixes: b08fbf241064 ("selftests: add test-cases for MPTCP MP_JOIN") Cc: stable@vger.kernel.org Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Jakub Kicinski <kuba@kernel.org>