- 14 Aug, 2021 32 commits
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David S. Miller authored
Alex Elder says: ==================== net: ipa: last things before PM conversion This series contains a few remaining changes needed before fully switching over to using runtime power management rather than the previous "IPA clock" mechanism. The first patch moves the calls to enable and disable the IPA interrupt as a system wakeup interrupt into "ipa_clock.c" with the rest of the power-related code. The second adds a flag to make it possible to distinguish runtime suspend from system suspend. The third and fourth patches arrange for the ->start_xmit path to resume hardware if necessary, to ensure it is powered. If power is not active, the TX queue is stopped, and arrangements are made for the queue to be restarted once hardware power is active again. The fifth patch keeps the TX queue active during suspend. This isn't necessary for system suspend but it's important for runtime suspend. And the last patch makes it so we don't hold the hardware active while the modem network device is open. ==================== Signed-off-by:David S. Miller <davem@davemloft.net>
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Alex Elder authored
Currently a clock reference is taken whenever the ->ndo_open callback for the modem netdev is called. That reference is dropped when the device is closed, in ipa_stop(). We no longer need this, because ipa_start_xmit() now handles the situation where the hardware power state is not active. Drop the clock reference in ipa_open() when we're done, and take a new reference in ipa_stop() before we begin closing the interface. Finally (and unrelated, but trivial), change the return type of ipa_start_xmit() to be netdev_tx_t instead of int. Signed-off-by:
Alex Elder <elder@linaro.org> Signed-off-by:
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Alex Elder authored
Currently we stop the modem netdev transmit queue when suspending the hardware. For system suspend this ensured we'd never attempt to transmit while attempting to suspend the modem endpoints. For runtime suspend, the IPA hardware might get suspended while the system is operating. In that case we want an attempt to transmit a packet to cause the hardware to resume if necessary. But if we disable the queue this cannot happen. So stop disabling the queue on suspend. In case we end up disabling it in ipa_start_xmit() (see the previous commit), we still arrange to start the TX queue on resume. Signed-off-by:
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Alex Elder authored
We need to ensure the hardware is powered when we transmit a packet. But if it's not, we can't block to wait for it. So asynchronously request power in ipa_start_xmit(), and only proceed if the return value indicates the power state is active. If the hardware is not active, a runtime resume request will have been initiated. In that case, stop the network stack from further transmit attempts until the resume completes. Return NETDEV_TX_BUSY, to retry sending the packet once the queue is restarted. If the power request returns an error (other than -EINPROGRESS, which just means a resume requested elsewhere isn't complete), just drop the packet. Signed-off-by:
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Alex Elder authored
Create a new work structure in the modem private data, and use it to re-enable the modem network device transmit queue when resuming. This is needed by the next patch, which stops the TX queue if IPA power isn't active when a transmit request arrives. Packets will start arriving the instant the TX queue is enabled, but resuming isn't complete until ipa_modem_resume() returns. This way we're sure to be resumed before transmits are allowed again. Cancel it before calling ipa_stop() in ipa_modem_stop() to ensure the transmit queue restart completes before it gets stopped there. Signed-off-by:
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Alex Elder authored
Add a new flag that is set when the hardware is suspended due to a system suspend operation, distingishing it from runtime suspend. Use it in the SUSPEND IPA interrupt handler to determine whether to trigger a system resume because of the event. Define new suspend and resume power management callback functions to set and clear the new flag, respectively. Signed-off-by:
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Alex Elder authored
Move the call to enable the IPA interrupt as a wakeup interrupt into ipa_power_setup(), disable it in ipa_power_teardown(). Signed-off-by:
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David S. Miller authored
Nikolay Aleksandrov says: ==================== net: bridge: mcast: dump querier state This set adds the ability to dump the current multicast querier state. This is extremely useful when debugging multicast issues, we've had many cases of unexpected queriers causing strange behaviour and mcast test failures. The first patch changes the querier struct to record a port device's ifindex instead of a pointer to the port itself so we can later retrieve it, I chose this way because it's much simpler and doesn't require us to do querier port ref counting, it is best effort anyway. Then patch 02 makes the querier address/port updates consistent via a combination of multicast_lock and seqcount, so readers can only use seqcount to get a consistent snapshot of address and port. Patch 03 is a minor cleanup in preparation for the dump support, it consolidates IPv4 and IPv6 querier selection paths as they share most of the logic (except address comparisons of course). Finally the last three patches add the new querier state dumping support, for the bridge's global multicast context we embed the BRIDGE_QUERIER_xxx attributes into IFLA_BR_MCAST_QUERIER_STATE and for the per-vlan global mcast contexts we embed them into BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_STATE. The structure is: [IFLA_BR_MCAST_QUERIER_STATE / BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_STATE] `[BRIDGE_QUERIER_IP_ADDRESS] - ip address of the querier `[BRIDGE_QUERIER_IP_PORT] - bridge port ifindex where the querier was seen (set only if external querier) `[BRIDGE_QUERIER_IP_OTHER_TIMER] - other querier timeout `[BRIDGE_QUERIER_IPV6_ADDRESS] - ip address of the querier `[BRIDGE_QUERIER_IPV6_PORT] - bridge port ifindex where the querier was seen (set only if external querier) `[BRIDGE_QUERIER_IPV6_OTHER_TIMER] - other querier timeout Later we can also add IGMP version of seen queriers and last seen values from the queries. ==================== -
Nikolay Aleksandrov authored
Use the new mcast querier state dump infrastructure and export vlans' mcast context querier state embedded in attribute BRIDGE_VLANDB_GOPTS_MCAST_QUERIER_STATE. Signed-off-by:
Nikolay Aleksandrov <nikolay@nvidia.com> Signed-off-by:
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Nikolay Aleksandrov authored
Add support for dumping global IPv6 querier state, we dump the state only if our own querier is enabled or there has been another external querier which has won the election. For the bridge global state we use a new attribute IFLA_BR_MCAST_QUERIER_STATE and embed the state inside. The structure is: [IFLA_BR_MCAST_QUERIER_STATE] `[BRIDGE_QUERIER_IPV6_ADDRESS] - ip address of the querier `[BRIDGE_QUERIER_IPV6_PORT] - bridge port ifindex where the querier was seen (set only if external querier) `[BRIDGE_QUERIER_IPV6_OTHER_TIMER] - other querier timeout IPv4 and IPv6 attributes are embedded at the same level of IFLA_BR_MCAST_QUERIER_STATE. If we didn't dump anything we cancel the nest and return. Signed-off-by: -
Nikolay Aleksandrov authored
Add support for dumping global IPv4 querier state, we dump the state only if our own querier is enabled or there has been another external querier which has won the election. For the bridge global state we use a new attribute IFLA_BR_MCAST_QUERIER_STATE and embed the state inside. The structure is: [IFLA_BR_MCAST_QUERIER_STATE] `[BRIDGE_QUERIER_IP_ADDRESS] - ip address of the querier `[BRIDGE_QUERIER_IP_PORT] - bridge port ifindex where the querier was seen (set only if external querier) `[BRIDGE_QUERIER_IP_OTHER_TIMER] - other querier timeout Signed-off-by: -
Nikolay Aleksandrov authored
We can consolidate both functions as they share almost the same logic. This is easier to maintain and we have a single querier update function. Signed-off-by:
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Nikolay Aleksandrov authored
Use a sequence counter to make sure port/address updates can be read consistently without requiring the bridge multicast_lock. We need to zero out the port and address when the other querier has expired and we're about to select ourselves as querier. br_multicast_read_querier will be used later when dumping querier state. Updates are done only with the multicast spinlock and softirqs disabled, while reads are done from process context and from softirqs (due to notifications). Signed-off-by:
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Nikolay Aleksandrov authored
Currently when a querier port is detected its net_bridge_port pointer is recorded, but it's used only for comparisons so it's fine to have stale pointer, in order to dereference and use the port pointer a proper accounting of its usage must be implemented adding unnecessary complexity. To solve the problem we can just store the netdevice ifindex instead of the port pointer and retrieve the bridge port. It is a best effort and the device needs to be validated that is still part of that bridge before use, but that is small price to pay for avoiding querier reference counting for each port/vlan. Signed-off-by:
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David S. Miller authored
Leon Romanovsky says: ==================== Devlink cleanup for delay event series Jakub's request to make sure that devlink events are delayed and not printed till they fully accessible [1] requires us to implement delayed event notification system in the devlink. In order to do it, I moved some of my patches (xarray e.t.c) from the future series to be before "Move devlink_register to be near devlink_reload_enable" [2]. That allows us to rely on DEVLINK_REGISTERED xarray mark to decide if to print event or not. Other patches are simple cleanup which is needed anyway. [1] https://lore.kernel.org/lkml/20210811071817.4af5ab34@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com [2] https://lore.kernel.org/lkml/cover.1628599239.git.leonro@nvidia.com Next in the queue: * Delay event series * Move devlink_register to be near devlink_reload_enable" * Extension of devlink_ops to be set dynamically * devlink_reload_* delete * Devlink locks rework to user xarray and reference counting * ???? ==================== Signed-off-by:
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Leon Romanovsky authored
The devlink pointer always exists after hclge_devlink_init() succeed. Remove that check together with NULL setting after release and ensure that devlink_register is last command prior to call to devlink_reload_enable(). Fixes: b741269b ("net: hns3: add support for registering devlink for PF") Signed-off-by:
Leon Romanovsky <leonro@nvidia.com> Signed-off-by:
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Leon Romanovsky authored
The { 0 } doesn't clear all fields in the struct, but tells to the compiler to set all fields to zero and doesn't touch any sub-fields if they exists. The {} is an empty initialiser that instructs to fully initialize whole struct including sub-fields, which is error-prone for future devlink_flash_notify extensions. Fixes: 6700acc5 ("devlink: collect flash notify params into a struct") Signed-off-by: -
Leon Romanovsky authored
We can use xarray instead of linearly organized linked lists for the devlink instances. This will let us revise the locking scheme in favour of internal xarray locking that protects database. Signed-off-by:
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Leon Romanovsky authored
The struct devlink itself is protected by internal lock and doesn't need global lock during operation. That global lock is used to protect addition/removal new devlink instances from the global list in use by all devlink consumers in the system. The future conversion of linked list to be xarray will allow us to actually delete that lock, but first we need to count all struct devlink users. The reference counting provides us a way to ensure that no new user space commands success to grab devlink instance which is going to be destroyed makes it is safe to access it without lock. Signed-off-by:
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Leon Romanovsky authored
Devlink objects are accessible only after they were registered and have valid devlink_*->devlink pointers. Remove that check and simplify respective fill functions as an outcome of such change. Signed-off-by:
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Leon Romanovsky authored
The devlink_pernet_pre_exit() will be called if net namespace exits. That routine is relevant for devlink instances that were assigned to that namespaces first. This assignment is possible only with the following command: "devlink reload DEV netns ...", which already checks reload support. Signed-off-by:
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David S. Miller authored
Mat Martineau says: ==================== mptcp: Improve use of backup subflows Multipath TCP combines multiple TCP subflows in to one stream, and the MPTCP-level socket must decide which subflow to use when sending (or resending) chunks of data. The choice of the "best" subflow to transmit on can vary depending on the priority (normal or backup) for each subflow and how well the subflow is performing. In order to improve MPTCP performance when some subflows are failing, this patch set changes how backup subflows are utilized and introduces tracking of "stale" subflows that are still connected but not making progress. Patch 1 adjusts MPTCP-level retransmit timeouts to use data from all subflows. Patch 2 makes MPTCP-level retransmissions less aggressive to avoid resending data that's still queued at the TCP level. Patch 3 changes the way pending data is handled when subflows are closed. Unacked MPTCP-level data still in the subflow tx queue is immediately moved to another subflow for transmission instead of waiting for MPTCP-level timeouts to trigger retransmission. Patch 4 has some sysctl code cleanup. Patches 5 and 6 add tracking of "stale" subflows, so only underlying TCP subflow connections that appear to be making progress are considered when selecting a subflow to (re)transmit data. How fast a subflow goes stale is configurable with a per-namespace sysctl. Related MIBS are added too. Patch 7 makes sure the backup flag is always correctly recorded when the MP_JOIN SYN/ACK is received for an added subflow. Patch 8 adds more test cases for backup subflows and stale subflows. ==================== Signed-off-by: -
Paolo Abeni authored
Add more test-case for link failures scenario, including recovery from link failure using only backup subflows and bi-directional transfer. Additionally explicitly check for stale count Co-developed-by:
Geliang Tang <geliangtang@gmail.com> Signed-off-by:
Paolo Abeni <pabeni@redhat.com> Signed-off-by:
Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by:
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Paolo Abeni authored
the parsed incoming backup flag is not propagated to the subflow itself, the client may end-up using it to send data. Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/191Signed-off-by:
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Paolo Abeni authored
This allows monitoring exceptional events like active backup scenarios. Signed-off-by:
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Paolo Abeni authored
The msk can use backup subflows to transmit in-sequence data only if there are no other active subflow. On active backup scenario, the MPTCP connection can do forward progress only due to MPTCP retransmissions - rtx can pick backup subflows. This patch introduces a new flag flow MPTCP subflows: if the underlying TCP connection made no progresses for long time, and there are other less problematic subflows available, the given subflow become stale. Stale subflows are not considered active: if all non backup subflows become stale, the MPTCP scheduler can pick backup subflows for plain transmissions. Stale subflows can return in active state, as soon as any reply from the peer is observed. Active backup scenarios can now leverage the available b/w with no restrinction. Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/207Signed-off-by:
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Paolo Abeni authored
Reorder the data in mptcp_pernet to avoid wasting space with no reasons and constify the access helpers. No functional changes intended. Signed-off-by:
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Paolo Abeni authored
The PM can close active subflow, e.g. due to ingress RM_ADDR option. Such subflow could carry data still unacked at the MPTCP-level, both in the write and the rtx_queue, which has never reached the other peer. Currently the mptcp-level retransmission will deliver such data, but at a very low rate (at most 1 DSM for each MPTCP rtx interval). We can speed-up the recovery a lot, moving all the unacked in the tcp write_queue, so that it will be pushed again via other subflows, at the speed allowed by them. Also make available the new helper for later patches. Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/207Signed-off-by:
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Paolo Abeni authored
The current mptcp re-inject strategy is very aggressive, we have mptcp-level retransmissions even on single subflow connection, if the link in-use is lossy. Let's be a little more conservative: we do retransmit only if at least a subflow has write and rtx queue empty. Additionally use the backup subflows only if the active subflows are stale - no progresses in at least an rtx period and ignore stale subflows for rtx timeout update Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/207Signed-off-by:
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Paolo Abeni authored
As reported by Maxim, we have a lot of MPTCP-level retransmissions when multilple links with different latencies are in use. This patch refactor the mptcp-level timeout accounting so that the maximum of all the active subflow timeout is used. To avoid traversing the subflow list multiple times, the update is performed inside the packet scheduler. Additionally clean-up a bit timeout handling. Signed-off-by:
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Arnd Bergmann authored
The 'imply' keyword does not do what most people think it does, it only politely asks Kconfig to turn on another symbol, but does not prevent it from being disabled manually or built as a loadable module when the user is built-in. In the ICE driver, the latter now causes a link failure: aarch64-linux-ld: drivers/net/ethernet/intel/ice/ice_main.o: in function `ice_eth_ioctl': ice_main.c:(.text+0x13b0): undefined reference to `ice_ptp_get_ts_config' ice_main.c:(.text+0x13b0): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `ice_ptp_get_ts_config' aarch64-linux-ld: ice_main.c:(.text+0x13bc): undefined reference to `ice_ptp_set_ts_config' ice_main.c:(.text+0x13bc): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `ice_ptp_set_ts_config' aarch64-linux-ld: drivers/net/ethernet/intel/ice/ice_main.o: in function `ice_prepare_for_reset': ice_main.c:(.text+0x31fc): undefined reference to `ice_ptp_release' ice_main.c:(.text+0x31fc): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `ice_ptp_release' aarch64-linux-ld: drivers/net/ethernet/intel/ice/ice_main.o: in function `ice_rebuild': This is a recurring problem in many drivers, and we have discussed it several times befores, without reaching a consensus. I'm providing a link to the previous email thread for reference, which discusses some related problems. To solve the dependency issue better than the 'imply' keyword, introduce a separate Kconfig symbol "CONFIG_PTP_1588_CLOCK_OPTIONAL" that any driver can depend on if it is able to use PTP support when available, but works fine without it. Whenever CONFIG_PTP_1588_CLOCK=m, those drivers are then prevented from being built-in, the same way as with a 'depends on PTP_1588_CLOCK || !PTP_1588_CLOCK' dependency that does the same trick, but that can be rather confusing when you first see it. Since this should cover the dependencies correctly, the IS_REACHABLE() hack in the header is no longer needed now, and can be turned back into a normal IS_ENABLED() check. Any driver that gets the dependency wrong will now cause a link time failure rather than being unable to use PTP support when that is in a loadable module. However, the two recently added ptp_get_vclocks_index() and ptp_convert_timestamp() interfaces are only called from builtin code with ethtool and socket timestamps, so keep the current behavior by stubbing those out completely when PTP is in a loadable module. This should be addressed properly in a follow-up. As Richard suggested, we may want to actually turn PTP support into a 'bool' option later on, preventing it from being a loadable module altogether, which would be one way to solve the problem with the ethtool interface. Fixes: 06c16d89 ("ice: register 1588 PTP clock device object for E810 devices") Link: https://lore.kernel.org/netdev/20210804121318.337276-1-arnd@kernel.org/ Link: https://lore.kernel.org/netdev/CAK8P3a06enZOf=XyZ+zcAwBczv41UuCTz+=0FMf2gBz1_cOnZQ@mail.gmail.com/ Link: https://lore.kernel.org/netdev/CAK8P3a3=eOxE-K25754+fB_-i_0BZzf9a9RfPTX3ppSwu9WZXw@mail.gmail.com/ Link: https://lore.kernel.org/netdev/20210726084540.3282344-1-arnd@kernel.org/Acked-by:
Shannon Nelson <snelson@pensando.io> Acked-by:
Jacob Keller <jacob.e.keller@intel.com> Acked-by:
Richard Cochran <richardcochran@gmail.com> Reviewed-by:
Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20210812183509.1362782-1-arnd@kernel.orgSigned-off-by:
Jakub Kicinski <kuba@kernel.org>
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Ivan Bornyakov authored
Add support for SFP cages connected to the Marvell 88E1512 transceiver. 88E1512 supports for SGMII/1000Base-X/100Base-FX media type with RGMII on system interface. Configure PHY to appropriate mode depending on the type of SFP inserted. On SFP removal configure PHY to the RGMII-copper mode so RJ-45 port can still work. Signed-off-by:
Ivan Bornyakov <i.bornyakov@metrotek.ru> Link: https://lore.kernel.org/r/20210812134256.2436-1-i.bornyakov@metrotek.ruSigned-off-by:
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- 13 Aug, 2021 8 commits
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Jakub Kicinski authored
Lukas Bulwahn says: ==================== Kconfig symbol clean-up on net The script ./scripts/checkkconfigsymbols.py warns on invalid references to Kconfig symbols (often, minor typos, name confusions or outdated references). This patch series addresses all issues reported by ./scripts/checkkconfigsymbols.py in ./net/ and ./drivers/net/ for Kconfig and Makefile files. Issues in the Kconfig and Makefile files indicate some shortcomings in the overall build definitions, and often are true actionable issues to address. These issues can be identified and filtered by: ./scripts/checkkconfigsymbols.py \ | grep -E "(drivers/)?net/.*(Kconfig|Makefile)" -B 1 -A 1 After applying this patch series on linux-next (next-20210811), the command above yields no further issues to address. ==================== Link: https://lore.kernel.org/r/20210812083806.28434-1-lukas.bulwahn@gmail.comSigned-off-by:
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Lukas Bulwahn authored
The menuconfig FSL_DPAA_ETH selects config FSL_FMAN_MAC, but the config FSL_FMAN_MAC never existed in the kernel tree. Hence, ./scripts/checkkconfigsymbols.py warns: FSL_FMAN_MAC Referencing files: drivers/net/ethernet/freescale/dpaa/Kconfig Remove this dead select in menuconfig FSL_DPAA_ETH. Fixes: 9ad1a374 ("dpaa_eth: add support for DPAA Ethernet") Signed-off-by:
Lukas Bulwahn <lukas.bulwahn@gmail.com> Acked-by:
Madalin Bucur <madalin.bucur@oss.nxp.com> Signed-off-by:
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Lukas Bulwahn authored
Commit 7a2e838d ("staging: ipx: delete it from the tree") removes the ipx driver and the config IPX. Since then, there is some dead leftover in ./net/802/, that was once used by the IPX driver, but has no other user. Remove this dead leftover. Signed-off-by:
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Lukas Bulwahn authored
Commit 05cdf457 ("microblaze: Remove noMMU code") removes config MICROBLAZE_64K_PAGES in arch/microblaze/Kconfig. However, there is still a reference to MICROBLAZE_64K_PAGES in the config VMXNET3 in ./drivers/net/Kconfig. Remove this obsolete reference to config MICROBLAZE_64K_PAGES. Signed-off-by:
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Hari Prasath authored
Add documentation for SAMA5D29 ethernet interface. Signed-off-by:
Hari Prasath <Hari.PrasathGE@microchip.com> Link: https://lore.kernel.org/r/20210812074422.13487-2-Hari.PrasathGE@microchip.comSigned-off-by:
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Hari Prasath authored
Add PTP capability to the macb config object for sama5d29. Signed-off-by:
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Joakim Zhang authored
By default FEC driver treat irq[0] (i.e. int0 described in dt-binding) as wakeup interrupt, but this situation changed on i.MX8M serials, SoC integration guys mix wakeup interrupt signal into int2 interrupt line. This patch introduces FEC_QUIRK_WAKEUP_FROM_INT2 to indicate int2 as wakeup interrupt for i.MX8MQ. Signed-off-by:
Joakim Zhang <qiangqing.zhang@nxp.com> Link: https://lore.kernel.org/r/20210812070948.25797-1-qiangqing.zhang@nxp.comSigned-off-by:
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Geert Uytterhoeven authored
The EtherAVB instances on the R-Car E3/D3 and RZ/G2E SoCs do not support TX clock internal delay modes, and the EtherAVB driver prints a warning if an unsupported "rgmii-*id" PHY mode is specified, to catch buggy DTBs. Commit a6f51f2e ("ravb: Add support for explicit internal clock delay configuration") deprecated deriving the internal delay mode from the PHY mode, in favor of explicit configuration using the now mandatory "rx-internal-delay-ps" and "tx-internal-delay-ps" properties, thus delegating the warning to the legacy fallback code. Since explicit configuration of a (valid) internal clock delay configuration is enforced by validating device tree source files against DT binding files, and all upstream DTS files have been converted as of commit a5200e63 ("arm64: dts: renesas: rzg2: Convert EtherAVB to explicit delay handling"), the checks in the legacy fallback code can be removed. Signed-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by:
Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Link: https://lore.kernel.org/r/2037542ac56e99413b9807e24049711553cc88a9.1628696778.git.geert+renesas@glider.beSigned-off-by:
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