- 19 Oct, 2021 40 commits
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Sebastian Andrzej Siewior authored
Eric reported that the rate estimator reads statics from the softirq which in turn triggers a warning introduced in the statistics rework. The warning is too cautious. The updates happen in the softirq context so reads from softirq are fine since the writes can not be preempted. The updates/writes happen during qdisc_run() which ensures one writer and the softirq context. The remaining bad context for reading statistics remains in hard-IRQ because it may preempt a writer. Fixes: 29cbcd85 ("net: sched: Remove Qdisc::running sequence counter") Reported-by:
Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by:
Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Russell King (Oracle) authored
Commit ea269a6f ("net: phylink: Update SFP selected interface on advertising changes") added a better solution to selecting the interface mode for SFPs using the advertisement mask. This method will work for mvneta and mvpp2 when selecting between 2500base-X and 1000base-X without needing to use the basex helper, or indicate that we support both 1000base-X and 2500base-X when in either of these two interface modes. Hence, we need to eliminate the validation prior to selecting the interface, otherwise when we clean up mvneta's validation function, we will end up locking to 2500base-X as we validate with an interface mode of PHY_INERFACE_MODE_2500BASEX. The supported mask will already have been reduced down to the union of support for the SFP and MAC already, so we can be confident that the advertisement mask is already appropriately restricted. We only need to select the appropriate interface, and then revalidate with the new interface mode. We get rid of the check for pl->sfp_port too, this is meaningless here as it doesn't get cleared when a module is removed, so it doesn't indicate if a module is present. Just rely on pl->sfp_bus. Signed-off-by:
Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by:
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luo penghao authored
This assignment statement is meaningless, because the statement will execute to the tag "set_itr_now". The clang_analyzer complains as follows: drivers/net/ethernet/intel/e1000e/netdev.c:2552:3 warning: Value stored to 'current_itr' is never read. Reported-by:
Zeal Robot <zealci@zte.com.cn> Signed-off-by:
luo penghao <luo.penghao@zte.com.cn> Reviewed-by:
Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by:
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David S. Miller authored
Jakub Kicinski says: ==================== ethernet: add eth_hw_addr_gen() for switches While doing the last polishing of the drivers/ethernet changes I realized we have a handful of drivers offsetting some base MAC addr by an id. So I decided to add a helper for it. The helper takes care of wrapping which is probably not 100% necessary but seems like a good idea. And it saves driver side LoC (the diffstat is actually negative if we compare against the changes I'd have to make if I was to convert all these drivers to not operate directly on netdev->dev_addr). ==================== Signed-off-by: -
Jakub Kicinski authored
Commit 406f42fa ("net-next: When a bond have a massive amount of VLANs...") introduced a rbtree for faster Ethernet address look up. To maintain netdev->dev_addr in this tree we need to make all the writes to it got through appropriate helpers. Signed-off-by:
Jakub Kicinski <kuba@kernel.org> Signed-off-by:
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Jakub Kicinski authored
Commit 406f42fa ("net-next: When a bond have a massive amount of VLANs...") introduced a rbtree for faster Ethernet address look up. To maintain netdev->dev_addr in this tree we need to make all the writes to it got through appropriate helpers. Signed-off-by:
Ido Schimmel <idosch@nvidia.com> Signed-off-by:
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Jakub Kicinski authored
Commit 406f42fa ("net-next: When a bond have a massive amount of VLANs...") introduced a rbtree for faster Ethernet address look up. To maintain netdev->dev_addr in this tree we need to make all the writes to it got through appropriate helpers. Signed-off-by:
Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by:
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Jakub Kicinski authored
Commit 406f42fa ("net-next: When a bond have a massive amount of VLANs...") introduced a rbtree for faster Ethernet address look up. To maintain netdev->dev_addr in this tree we need to make all the writes to it got through appropriate helpers. Vadym and Taras report that the current behavior of the driver is not exactly expected and it's better to add the port id in like other drivers do. Signed-off-by:
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Jakub Kicinski authored
Commit 406f42fa ("net-next: When a bond have a massive amount of VLANs...") introduced a rbtree for faster Ethernet address look up. To maintain netdev->dev_addr in this tree we need to make all the writes to it got through appropriate helpers. Signed-off-by:
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Jakub Kicinski authored
We have 5 drivers which offset base MAC addr by port id. Create a helper for them. This helper takes care of overflows, which some drivers did not do, please complain if that's going to break anything! Signed-off-by:
Shannon Nelson <snelson@pensando.io> Reviewed-by:
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David S. Miller authored
Jakub Kicinski says: ==================== ethernet: manual netdev->dev_addr conversions (part 2) Manual conversions of Ethernet drivers writing directly to netdev->dev_addr (part 2 out of 3). ==================== Signed-off-by: -
Jakub Kicinski authored
Commit 406f42fa ("net-next: When a bond have a massive amount of VLANs...") introduced a rbtree for faster Ethernet address look up. To maintain netdev->dev_addr in this tree we need to make all the writes to it got through appropriate helpers. Break the address up into an array on the stack, then call eth_hw_addr_set(). Signed-off-by:
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Jakub Kicinski authored
Commit 406f42fa ("net-next: When a bond have a massive amount of VLANs...") introduced a rbtree for faster Ethernet address look up. To maintain netdev->dev_addr in this tree we need to make all the writes to it got through appropriate helpers. Read the address into an array on the stack, then call eth_hw_addr_set(). Signed-off-by:
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Jakub Kicinski authored
Commit 406f42fa ("net-next: When a bond have a massive amount of VLANs...") introduced a rbtree for faster Ethernet address look up. To maintain netdev->dev_addr in this tree we need to make all the writes to it got through appropriate helpers. Read the address into an array on the stack, then call eth_hw_addr_set(). Signed-off-by:
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Jakub Kicinski authored
Commit 406f42fa ("net-next: When a bond have a massive amount of VLANs...") introduced a rbtree for faster Ethernet address look up. To maintain netdev->dev_addr in this tree we need to make all the writes to it got through appropriate helpers. Read the address into an array on the stack, then call eth_hw_addr_set(). Signed-off-by:
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Jakub Kicinski authored
Commit 406f42fa ("net-next: When a bond have a massive amount of VLANs...") introduced a rbtree for faster Ethernet address look up. To maintain netdev->dev_addr in this tree we need to make all the writes to it got through appropriate helpers. Read the address into an array on the stack, then call eth_hw_addr_set(). Signed-off-by:
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Jakub Kicinski authored
Commit 406f42fa ("net-next: When a bond have a massive amount of VLANs...") introduced a rbtree for faster Ethernet address look up. To maintain netdev->dev_addr in this tree we need to make all the writes to it got through appropriate helpers. Read the address into an array on the stack, then call eth_hw_addr_set(). Signed-off-by:
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Jakub Kicinski authored
Commit 406f42fa ("net-next: When a bond have a massive amount of VLANs...") introduced a rbtree for faster Ethernet address look up. To maintain netdev->dev_addr in this tree we need to make all the writes to it got through appropriate helpers. Break the address up into an array on the stack, then call eth_hw_addr_set(). Signed-off-by:
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Jakub Kicinski authored
Commit 406f42fa ("net-next: When a bond have a massive amount of VLANs...") introduced a rbtree for faster Ethernet address look up. To maintain netdev->dev_addr in this tree we need to make all the writes to it got through appropriate helpers. Read the address into an array on the stack, then call eth_hw_addr_set(). Signed-off-by:
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Jakub Kicinski authored
Commit 406f42fa ("net-next: When a bond have a massive amount of VLANs...") introduced a rbtree for faster Ethernet address look up. To maintain netdev->dev_addr in this tree we need to make all the writes to it got through appropriate helpers. Invert the address into an array on the stack, then call eth_hw_addr_set(). Signed-off-by:
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Jakub Kicinski authored
Commit 406f42fa ("net-next: When a bond have a massive amount of VLANs...") introduced a rbtree for faster Ethernet address look up. To maintain netdev->dev_addr in this tree we need to make all the writes to it got through appropriate helpers. Read the address into an array on the stack, then call eth_hw_addr_set(). Signed-off-by:
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Jakub Kicinski authored
Commit 406f42fa ("net-next: When a bond have a massive amount of VLANs...") introduced a rbtree for faster Ethernet address look up. To maintain netdev->dev_addr in this tree we need to make all the writes to it got through appropriate helpers. Read the address into an array on the stack, then call eth_hw_addr_set(). Signed-off-by:
Stephen Hemminger <stephen@networkplumber.org> Signed-off-by:
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Jakub Kicinski authored
Commit 406f42fa ("net-next: When a bond have a massive amount of VLANs...") introduced a rbtree for faster Ethernet address look up. To maintain netdev->dev_addr in this tree we need to make all the writes to it got through appropriate helpers. Read the address into an array on the stack, then call eth_hw_addr_set(). Signed-off-by:
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David S. Miller authored
Ido Schimmel says: ==================== mlxsw: Multi-level qdisc offload Petr says: Currently, mlxsw admits for offload a suitable root qdisc, and its children. Thus up to two levels of hierarchy are offloaded. Often, this is enough: one can configure TCs with RED and TCs with a shaper on, and can even see counters for each TC by looking at a qdisc at a sufficiently shallow position. While simple, the system has obvious shortcomings. It is not possible to configure both RED and shaping on one TC. It is not possible to place a PRIO below root TBF, which would then be offloaded as port shaper. FIFOs are only offloaded at root or directly below, which is confusing to users, because RED and TBF of course have their own FIFO. This patch set lifts assumptions that prevent offloading multi-level qdisc trees. In patch #1, offload of a graft operation is added to TBF. Grafts are issued as another qdisc is linked to the qdisc in question, and give drivers a chance to react to the linking. The absence of this event was not a major issue so far, because TBF was not considered classful, which changes with this patchset. The codebase currently assumes that ETS and PRIO are the only classful qdiscs. The following patches gradually lift this assumption. In patch #2, calculation of traffic class and priomap of a qdisc is fixed. Patch #3 fixes handling of future FIFOs. Child FIFO qdiscs may be created and notified before their parent qdisc exists and therefore need special handling. Patches #4, #5 and #6 unify, respectively, child destruction, child grafting, and cleanup of statistics. Patch #7 adds a function that validates whether a given qdisc topology is offloadable. Finally in patch #8, TBF and RED become classful. At this point, FIFO qdiscs grafted to an offloaded qdisc should always be offloaded. Patch #9 adds a selftest to verify some offloadable and unoffloadable qdisc trees. ==================== Signed-off-by: -
Petr Machata authored
This checks that various qdisc configurations either are or are not offloaded. Signed-off-by:
Petr Machata <petrm@nvidia.com> Signed-off-by:
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Petr Machata authored
Permit offloading qdiscs below RED and TBF. In order to avoid having to implement trivial propagating callbacks for get_prio_bitmap and get_tclass_num, extend mlxsw_sp_qdisc_get_prio_bitmap() and ..._get_tclass_num() to handle the lack of the callback as a cue to forward the request to the parent. Signed-off-by:
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Petr Machata authored
A following patch will enable offloading qdiscs that are deeper than directly under root qdisc. Currently the topology validation consists of demanding a root qdisc position for ETS and PRIO. Since RED and TBF are considered classless, this is enough. In order to prevent some nonsensical combinations when RED and TBF become classful, introduce a more general topology validator. Signed-off-by:
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Petr Machata authored
On Spectrum, there are no per-TC TX counters. Instead, mlxsw uses per-prio counters and aggregates them according to the priomap. Therefore when priomap changes, the counter base values need to be reset to reflect the change. Previously, this was only done for the sole child qdisc, but a following patch makes RED and TBF classful. Thus apply the request to the whole sub-tree. Signed-off-by:
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Petr Machata authored
Qdisc graft operations have so far been reported at PRIO, ETS and RED, with RED events ignored, because RED was not considered a classful qdisc. A following patch will make mlxsw recognize RED and TBF as classful qdiscs, and thus it is necessary to validate grafting at these qdiscs as well. Rename the existing graft validator to make it clear that it is a generic function, and invoke for RED and TBF graft events as well. Drop the unnecessary PRIO helper and invoke the graft validator directly for PRIO as well. Signed-off-by:
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Petr Machata authored
Currently ETS and PRIO are the only offloaded classful qdiscs. Since they are both similar, their destroy handler is the same, and it handles children destruction itself. But now it is possible to do it generically for any classful qdisc. Therefore promote the recursive destruction from the ETS handler to mlxsw_sp_qdisc_destroy(), so that RED and TBF pick it up in follow-up patches. Signed-off-by:
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Petr Machata authored
Extract from __mlxsw_sp_qdisc_ets_replace() two helpers for handling of one future FIFO resp. reinitializing the array of future FIFOs. Signed-off-by:
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Petr Machata authored
Currently when keeping track of qdiscs, mlxsw notes the TC and priomap corresponding to each qdisc. That is fine currently, as there only ever is one level of qdiscs to update: the direct children of ETS / PRIO. However as deeper structures are made offloadable, ETS would need to update these values for the complete subtree, and interim qdiscs would need to remember to propagate the value. Instead, reverse the responsibility: child qdiscs can ask their parent what their TC and priomap are. ETS / PRIO know the answer right away, or there are defaults for when the root qdisc does not assign them (e.g. when RED is used as root qdisc). When RED and TBF become classful, they will simply forward the request up to their parent. Signed-off-by:
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Petr Machata authored
As another qdisc is linked to the TBF, the latter should issue an event to give drivers a chance to react to the grafting. In other qdiscs, this event is called GRAFT, so follow suit with TBF as well. Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linuxDavid S. Miller authored
Saeed Mahameed says: mlx5-updates-2021-10-18 Maor Maor Gottlieb says: ======================== Use hash to select the affinity port in VF LAG Current VF LAG architecture is based on QP association with a port. QP must be created after LAG is enabled to allow association with non-native port. VM Packets going on slow-path to eSwicth manager (SW path or hairpin) will be transmitted through a different QP than the VM. This means that Different packets of the same flow might egress from different physical ports. This patch-set solves this issue by moving the port selection to be based on the hash function defined by the bond. When the device is moved to VF LAG mode, the driver creates TTC (traffic type classifier) flow tables in order to classify the packet and steer it to the relevant hash function. Similar to what is done in the mlx5 RSS implementation. Each rule in the TTC table, forwards the packet to port selection flow table which has one hash split flow group which contains two "catch all" flow table entries. Each entry point to the relative uplink port. As shown below: ------------------- | FT | TTC rule -> | ----------- | | FG| FTE --|-|-----> uplink of port #1 | | FTE --|-|-----> uplink of port #2 | ----------- | ------------------- Hash split flow group is flow group that created as type of HASH_SPLIT and associated with match definer. The match definer define the fields which included in the hash calculation. The driver creates the match definer according to the xmit hash policy of the bond driver. Patches overview: ======================== Minor E-Switch updates: - Patch #12, dynamic allocation of dest array - Patch #13, increase number of forward destinations to 32 Signed-off-by: -
git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queueDavid S. Miller authored
Mateusz Palczewski says: ==================== 40GbE Intel Wired LAN Driver Updates 2021-10-18 Use single state machine for driver initialization and for service initialized driver. The init state machine implemented in init_task() is merged into the watchdog_task(). The init_task() function is removed. ==================== Signed-off-by: -
Maor Dickman authored
Increase supported number of forward destinations in the same rule, local and remote, from 2 to 32. Signed-off-by:
Maor Dickman <maord@nvidia.com> Reviewed-by:
Roi Dayan <roid@nvidia.com> Signed-off-by:
Saeed Mahameed <saeedm@nvidia.com>
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Maor Dickman authored
Use dynamic allocation for the dest array in preparation for the next patch which increase MLX5_MAX_FLOW_FWD_VPORTS and will cause stack allocation to be bigger than 1024 bytes. Signed-off-by:
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Maor Gottlieb authored
Use the steering based solution for select the affinity port when the LAG mode is based on hash policy and the device support in port selection flow table. Signed-off-by:
Maor Gottlieb <maorg@nvidia.com> Reviewed-by:
Mark Bloch <mbloch@nvidia.com> Signed-off-by:
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Maor Gottlieb authored
Add create function, build the steering tables, TTC and definers according to the LAG hash type. The destroy function, destroys all the steering components. The modify functions is used when the bond mapping changes and it iterates over all the rules in the definers and modifies them to steer the packet to the relevant active ports. Signed-off-by:
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Maor Gottlieb authored
Add support to create inner and outer TTC tables for LAG port selection. These tables are used to classify the packets in order to select the related definer. Signed-off-by:
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