- 19 Jan, 2023 38 commits
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Tony Nguyen authored
The parameter name in the function declaration and definition do not match; adjust the naming for consistency and to avoid confusion. Signed-off-by:Tony Nguyen <anthony.l.nguyen@intel.com>
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Tony Nguyen authored
Previous checks, and goto, will catch all errors meaning these returns will only return 0; explicitly return 0 for these cases. Signed-off-by: -
Tony Nguyen authored
There are some places where the scope of a variable can be reduced, so do that. Signed-off-by: -
Sergey Temerkhanov authored
Currently, ice_flex_pipe.c includes the DDP loading functions and has grown large. Although flexible processing support code is related to DDP loading, these parts are distinct. Move the DDP loading functionality from ice_flex_pipe.c to a separate file. Signed-off-by:
Sergey Temerkhanov <sergey.temerkhanov@intel.com> Tested-by: Gurucharan G <gurucharanx.g@intel.com> (A Contingent worker at Intel) Signed-off-by:
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Tony Nguyen authored
The use of suppressions for cppcheck in the kernel does not look to be standard as the ice driver is the only one doing it. Remove the comments/suppressions. Signed-off-by: -
Przemek Kitszel authored
Combine if statements setting the same link speed together. Suggested-by:
Przemek Kitszel <przemyslaw.kitszel@intel.com> Acked-by:
Anirudh Venkataramanan <anirudh.venkataramanan@intel.com> Tested-by: Sunitha Mekala <sunithax.d.mekala@intel.com> (A Contingent worker at Intel) Signed-off-by:
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Anirudh Venkataramanan authored
Commit 2736d94f ("ethtool: Added support for 50Gbps per lane link modes") in v5.1 added (among other things) support for 100G CR2/KR2/SR2 link modes. Advertise these link modes if the firmware reports the corresponding PHY types. Signed-off-by:
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Jesse Brandeburg authored
There were a few places we had missed checking the VSI type to make sure it was definitely a PF VSI, before calling setup functions intended only for the PF VSI. This doesn't fix any explicit bugs but cleans up the code in a few places and removes one explicit != vsi->type check that can be superseded by this code (it's a super set) Signed-off-by:
Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by: Gurucharan G <gurucharanx.g@intel.com> (A Contingent worker at Intel) Signed-off-by:
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Anirudh Venkataramanan authored
Remove a redundant null check, as vsi could not be null at this point. Signed-off-by:
Leon Romanovsky <leonro@nvidia.com> Tested-by: Gurucharan G <gurucharanx.g@intel.com> (A Contingent worker at Intel) Signed-off-by:
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Siddaraju DH authored
The PHY provides only 39b timestamp. With current timing implementation, we discard lower 7b, leaving 32b timestamp. The driver reconstructs the full 64b timestamp by correlating the 32b timestamp with cached_time for performance. The reconstruction algorithm does both forward & backward interpolation. The 32b timeval has overflow duration of 2^32 counts ~= 4.23 second. Due to interpolation in both direction, its now ~= 2.125 second IIRC, going with at least half a duration, the cached_time is updated with periodic thread of 1 second (worst-case) periodicity. But the 1 second periodicity is based on System-timer. With PPB adjustments, if the 1588 timers increments at say double the rate, (2s in-place of 1s), the Nyquist rate/half duration sampling/update of cached_time with 1 second periodic thread will lead to incorrect interpolations. Hence we should restrict the PPB adjustments to at least half duration of cached_time update which translates to 500,000,000 PPB. Since the periodicity of the cached-time system thread can vary, it is good to have some buffer time and considering practicality of PPB adjustments, limiting the max_adj to 100,000,000. Signed-off-by:
Siddaraju DH <siddaraju.dh@intel.com> Tested-by: Gurucharan G <gurucharanx.g@intel.com> (A Contingent worker at Intel) Signed-off-by:
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Amritha Nambiar authored
Currently the drop action is supported only in switchdev mode. Add support for offloading receive filters with action drop in ADQ/non-ADQ modes. This is in addition to other actions such as forwarding to a VSI (ADQ) or a queue (ADQ/non-ADQ). Also renamed 'ch_vsi' to 'dest_vsi' as it is valid for multiple actions such as forward to vsi/queue which may/may not create a channel vsi. Reviewed-by:
Sridhar Samudrala <sridhar.samudrala@intel.com> Signed-off-by:
Amritha Nambiar <amritha.nambiar@intel.com> Tested-by:
Bharathi Sreenivas <bharathi.sreenivas@intel.com> Signed-off-by:
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Anatolii Gerasymenko authored
If the number of Traffic Classes (TC) is decreased, the FW will no longer remove TC nodes, but will send a pending change notification. This will allow RDMA to destroy corresponding Control QP markers. After RDMA finishes outstanding operations, the ice driver will send an execute MIB Pending change admin queue command to FW to finish DCB configuration change. The FW will buffer all incoming Pending changes, so there can be only one active Pending change. RDMA driver guarantees to remove Control QP markers within 5000 ms. Hence, LLDP response timeout txTTL (default 30 sec) will be met. In the case of a Pending change, LLDP MIB Change Event (opcode 0x0A01) will contain the whole new MIB. But Get LLDP MIB (opcode 0x0A00) AQ call would still return an old MIB, as the Pending change hasn't been applied yet. Add ice_get_dcb_cfg_from_mib_change() function to retrieve DCBX config from LLDP MIB Change Event's buffer for Pending changes. Co-developed-by:
Dave Ertman <david.m.ertman@intel.com> Signed-off-by:
Anatolii Gerasymenko <anatolii.gerasymenko@intel.com> Tested-by: Arpana Arland <arpanax.arland@intel.com> (A Contingent worker at Intel) Signed-off-by:
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Tsotne Chakhvadze authored
In DCB Willing Mode (FW managed LLDP), when the link partner changes configuration which requires fewer TCs, the TCs that are no longer needed are suspended by EMP FW, removed, and never resumed. This occurs before a MIB change event is indicated to SW. The permanent suspension and removal of these TC nodes in the scheduler prevents RDMA from being able to destroy QPs associated with this TC, requiring a CORE reset to recover. A new DCBX configuration change flow is defined to allow SW driver and other SW components (RDMA) to properly adjust to the configuration changes before they are taking effect in HW. This flow includes a two-way handshake between EMP FW<->LAN SW<->RDMA SW. List of changes: - Add 'Execute Pending LLDP MIB' AQC. - Add 'Pending Event Enable' bit. - Add additional logic to ignore Pending Event Enable' request while 'LLDP MIB Chnage' event is disabled. - Add 'Execute Pending LLDP MIB' AQC sending function to FW, which is needed to take place MIB Event change. Signed-off-by:
Tsotne Chakhvadze <tsotne.chakhvadze@intel.com> Co-developed-by:
Karen Sornek <karen.sornek@intel.com> Signed-off-by:
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Paolo Abeni authored
Michael Walle says: ==================== net: phy: Remove probe_capabilities With all the drivers which used .probe_capabilities converted to the new c45 MDIO access methods, we can now decide based upon these whether a bus driver supports c45 and we can get rid of the not widely used probe_capabilites. Unfortunately, due to a now broader support of c45 scans, this will trigger a bug on some boards with a (c22-only) Micrel PHY. These PHYs don't ignore c45 accesses correctly, thinking they are addressed themselves and distrupt the MDIO access. To avoid this, a blacklist for c45 scans is introduced. ==================== Link: https://lore.kernel.org/r/20230116-net-next-remove-probe-capabilities-v2-0-15513b05e1f4@walle.ccSigned-off-by:
Paolo Abeni <pabeni@redhat.com>
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Andrew Lunn authored
Deciding if to probe of PHYs using C45 is now determine by if the bus provides the C45 read method. This makes probe_capabilities redundant so remove it. Signed-off-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
Michael Walle <michael@walle.cc> Reviewed-by:
Andrew Jeffery <andrew@aj.id.au> Signed-off-by:
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Andrew Lunn authored
Some PHYs provide invalid IDs in C22 space. If C45 is supported on the bus an attempt can be made to get the IDs from the C45 space. Decide on this based on the presence of the C45 read method in the bus structure. This will allow the unreliable probe_capabilities to be removed. Signed-off-by:
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Andrew Lunn authored
Now that all MDIO bus drivers which set probe_capabilities to MDIOBUS_C22_C45 have been converted to use the name API for C45 transactions, perform the scanning of the bus based on which methods the bus provides. Signed-off-by:
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Andrew Lunn authored
After scanning the bus for C22 devices, check if any Micrel PHYs have been found. They are known to do bad things if there are C45 transactions on the bus. Prevent the scanning of the bus using C45 if such a PHY has been detected. Signed-off-by:
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Andrew Lunn authored
Some C22 PHYs do bad things when there are C45 transactions on the bus. In order to handle this, the bus needs to be scanned first for C22 at all addresses, and then C45 scanned for all addresses. The Marvell pxa168 driver scans a specific address on the bus to find its PHY. This is a C22 only device, so update it to use the c22 helper. Signed-off-by:
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Andrew Lunn authored
No functional change, just place it earlier in preparation for some refactoring. While at it, correct the comment format and one typo. Signed-off-by:
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Paolo Abeni authored
Pavithra Sathyanarayanan says: ==================== generic implementation of phy interface and fixed_phy support for the LAN743x device This patch series includes the following changes: - Remove the unwanted interface settings in the LAN743x driver as it is preset in EEPROM configurations. - Handle generic implementation for the phy interfaces for different devices LAN7430/31 and pci11x1x. - Add new feature for fixed_phy support at 1Gbps full duplex for the LAN7431 device if a phy not found over MDIO. Includes support for communication between a MAC in a LAN7431 device and custom phys without an MDIO interface. ==================== Link: https://lore.kernel.org/r/20230117141614.4411-1-Pavithra.Sathyanarayanan@microchip.comSigned-off-by:
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Pavithra Sathyanarayanan authored
Add fixed_phy support at 1Gbps full duplex for the lan7431 device if a phy not found over MDIO. Tested with a MAC to MAC connection from LAN7431 to a KSZ9893 switch. This avoids the Driver open error in LAN743x. TX delay and internal CLK125 generation is already enabled in EEPROM. Signed-off-by:
Pavithra Sathyanarayanan <Pavithra.Sathyanarayanan@microchip.com> Signed-off-by:
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Pavithra Sathyanarayanan authored
Add logic to read the Phy interface from MAC_CR register for LAN743x driver. Checks for the LAN7430/31 or pci11x1x devices and the adapter interface is updated accordingly. For LAN7431, adapter interface is set based on Bit 19 of MAC_CR register as MII or RGMII which removes the forced RGMII/GMII configurations in lan743x_phy_open(). Signed-off-by:
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Pavithra Sathyanarayanan authored
Remove the MII/RGMII Selection settings in driver as it is preset by the EEPROM and has the required configurations before the driver loads for LAN743x. Signed-off-by:
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Hangbin Liu authored
There are some issues with the bpf/nat6to4.c building. 1. It use TEST_CUSTOM_PROGS, which will add the nat6to4.o to kselftest-list file and run by common run_tests. 2. When building the test via `make -C tools/testing/selftests/ TARGETS="net"`, the nat6to4.o will be build in selftests/net/bpf/ folder. But in test udpgro_frglist.sh it refers to ../bpf/nat6to4.o. The correct path should be ./bpf/nat6to4.o. 3. If building the test via `make -C tools/testing/selftests/ TARGETS="net" install`. The nat6to4.o will be installed to kselftest_install/net/ folder. Then the udpgro_frglist.sh should refer to ./nat6to4.o. To fix the confusing test path, let's just move the nat6to4.c to net folder and build it as TEST_GEN_FILES. Fixes: edae34a3 ("selftests net: add UDP GRO fraglist + bpf self-tests") Tested-by:
Björn Töpel <bjorn@kernel.org> Signed-off-by:
Hangbin Liu <liuhangbin@gmail.com> Link: https://lore.kernel.org/r/20230118020927.3971864-1-liuhangbin@gmail.comSigned-off-by:
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Jakub Kicinski authored
Vladimir Oltean says: ==================== ENETC BD ring cleanup The highlights of this patch set are: - Installing a BPF program and changing PTP RX timestamping settings are currently implemented through a port reconfiguration procedure which triggers an AN restart on the PHY, and these procedures are not generally guaranteed to leave the port in a sane state. Patches 9/12 and 11/12 address that. - Attempting to put the port down (or trying to reconfigure it) has the driver oppose some resistance if it's bombarded with RX traffic (it won't go down). Patch 12/12 addresses that. The other 9 patches are just cleanup in the BD ring setup/teardown code, which gradually led to bringing the driver in a position where resolving those 2 issues was possible. ==================== Link: https://lore.kernel.org/r/20230117230234.2950873-1-vladimir.oltean@nxp.comSigned-off-by:
Jakub Kicinski <kuba@kernel.org>
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Vladimir Oltean authored
napi_synchronize() from enetc_stop() waits until the softirq has finished execution and no longer wants to be rescheduled. However under high traffic load, this will never happen, and the interface can never be closed. The problem is the fact that the NAPI poll routine is written to update the consumer index which makes the device want to put more buffers in the RX ring, which restarts the madness again. Browsing around, it seems that some drivers like i40e keep a bit (__I40E_VSI_DOWN) which they use as communication between the control path and the data path. But that isn't my first choice, because complications ensue - since the enetc hardirq may trigger while we are in a theoretical ENETC_DOWN state, it may happen that enetc_msix() masks it, but enetc_poll() never unmasks it. To prevent a stall in that case, one would need to schedule all NAPI instances when ENETC_DOWN gets cleared, to process what's pending. I find it more desirable for the control path - enetc_stop() - to just quiesce the RX ring and let the softirq finish what remains there, without any explicit communication, just by making hardware not provide any more packets. This seems possible with the Enable bit of the RX BD ring (RBaMR[EN]). I can't seem to find an exact definition of what this bit does, but when the RX ring is disabled, the port seems to no longer update the producer index, and not react to software updates of the consumer index. In fact, the RBaMR[EN] bit is already toggled by the driver, but too late for what we want: enetc_close() -> enetc_stop() -> napi_synchronize() -> enetc_clear_bdrs() -> enetc_clear_rxbdr() The enetc_clear_bdrs() function contains not only logic to disable the RX and TX rings, but also logic to wait for the TX ring stop being busy. We split enetc_clear_bdrs() into enetc_disable_bdrs() and enetc_wait_bdrs(). One needs to run before napi_synchronize() and the other after (NAPI also processes TX completions, so we maximize our chances of not waiting for the ENETC_TBSR_BUSY bit - unless a packet is stuck for some reason, ofc). We also split off enetc_enable_bdrs() from enetc_setup_bdrs(), and call this from the mirror position in enetc_start() compared to enetc_stop(), i.e. right before netif_tx_start_all_queues(). Signed-off-by:
Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by:
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Vladimir Oltean authored
Offloading a BPF program to the RX path of the driver suffers from the same problems as the PTP reconfiguration - improper error checking can leave the driver in an invalid state, and the link on the PHY is lost. Reuse the enetc_reconfigure() procedure, but here, we need to run some code in the middle of the ring reconfiguration procedure - while the interface is still down. Introduce a callback which makes that possible. Signed-off-by:
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Vladimir Oltean authored
Follow the convention from this driver, which is to name "struct net_device *" as "ndev", and the convention from other drivers, to name "struct netdev_bpf *" as "bpf". Signed-off-by:
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Vladimir Oltean authored
The crude enetc_stop() -> enetc_open() mechanism suffers from 2 problems: 1. improper error checking 2. it involves phylink_stop() -> phylink_start() which loses the link Right now, the driver is prepared to offer a better alternative: a ring reconfiguration procedure which takes the RX BD size (normal or extended) as argument. It allocates new resources (failing if that fails), stops the traffic, and assigns the new resources to the rings. Signed-off-by:
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Vladimir Oltean authored
We want to introduce a fast interface reconfiguration procedure, which involves temporarily stopping the rings. But we want enetc_start() and enetc_stop() to not restart PHY autoneg, because that can take a few seconds until it completes again. So we need part of enetc_start() and enetc_stop(), but not all of them. Move phylink_start() right next to phylink_of_phy_connect(), and phylink_stop() right next to phylink_disconnect_phy(), both still in ndo_open() and ndo_stop(). Signed-off-by:
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Vladimir Oltean authored
We have a few instances in the enetc driver where the ring resources (BD ring iomem, software BD ring, software TSO headers, basically everything except RX buffers) need to be reallocated. For example, when RX timestamping is enabled, the RX BD format changes to an extended one (twice as large). Currently, this is done using a simplistic enetc_close() -> enetc_open() procedure. But this is quite crude, since it also invokes phylink_stop() -> phylink_start(), the link is lost, and a few seconds need to pass for autoneg to complete again. In fact it's bad also due to the improper (yolo) error checking. In case we fail to allocate new resources, we've already freed the old ones, so the interface is more or less stuck. To avoid that, we need a system where reconfiguration is possible in a way in which resources are allocated upfront. This means that there will be a higher memory usage temporarily, but the assignment of resources to rings can be done when both the old and new resources are still available. Introduce a struct enetc_bdr_resource which holds the resources for a ring, be it RX or TX. This structure duplicates a lot of fields from struct enetc_bdr (and access to the same fields in the ring structure was left duplicated, to not change cache characteristics in the fast path). When enetc_alloc_tx_resources() runs, it returns an array of resource elements (one per TX ring), in addition to the existing priv->tx_res. To populate priv->tx_res with that array, one must call enetc_assign_tx_resources(), and this also frees the old resources. Signed-off-by:
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Vladimir Oltean authored
Extended RX buffer descriptors are necessary if they carry RX timestamps, which will be true when PTP timestamping is enabled. Right now, the rx_ring->ext_en is set from the function that allocates ring resources (enetc_alloc_rx_resources() -> enetc_alloc_rxbdr()), and also used later, in enetc_setup_rxbdr(). It is also used in the enetc_rxbd() and enetc_rxbd_next() fast path helpers. We want to decouple resource allocation from BD ring setup, but both procedures depend on BD size (extended or not). Move the "extended" boolean to enetc_open() and pass it both to the RX allocation procedure as well as to the RX ring setup procedure. The latter will set rx_ring->ext_en from now on. Signed-off-by:
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Vladimir Oltean authored
The call path in enetc_close() is: enetc_close() -> enetc_free_rxtx_rings() -> enetc_free_tx_ring() -> enetc_free_tx_frame() -> enetc_free_tx_resources() -> enetc_free_txbdr() -> enetc_free_tx_frame() The enetc_free_tx_frame() function is written such that the second call exits without doing anything, but nonetheless, it is completely redundant. Delete it. This makes the TX teardown path more similar to the RX one, where rx_swbd freeing is done in enetc_free_rx_ring(), not in enetc_free_rxbdr(). Signed-off-by: -
Vladimir Oltean authored
The call path in enetc_close() is: enetc_close() -> enetc_free_rxtx_rings() -> enetc_free_rx_ring() -> tests whether rx_ring->rx_swbd is NULL -> enetc_free_tx_ring() -> tests whether tx_ring->tx_swbd is NULL -> enetc_free_rx_resources() -> enetc_free_rxbdr() -> sets rxr->rx_swbd to NULL -> enetc_free_tx_resources() -> enetc_free_txbdr() -> setx txr->tx_swbd to NULL From the above, it is clear that due to the function ordering, the checks for NULL are redundant, since the software buffer descriptor arrays have not yet been set to NULL. Drop these checks. Signed-off-by: -
Vladimir Oltean authored
This is a refactoring change which introduces the opposite function of enetc_dma_alloc_bdr(). Signed-off-by:
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Vladimir Oltean authored
There is only one place which needs to set up indices in the RX ring. Be consistent with what was done in the TX path and do this in enetc_setup_rxbdr(). Signed-off-by:
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Vladimir Oltean authored
enetc_alloc_txbdr() deals with allocating resources necessary for a TX ring to work (the array of software BDs and the array of TSO headers). The next_to_clean and next_to_use pointers are overwritten with proper values which are read from hardware here: enetc_open -> enetc_alloc_tx_resources -> enetc_alloc_txbdr -> set to zero -> enetc_setup_bdrs -> enetc_setup_txbdr -> read from hardware So their initialization with zeroes is pointless and confusing. Delete it. Consequently, since enetc_setup_txbdr() has no opposite cleanup function, also delete the resetting of these indices from enetc_free_tx_ring(). Signed-off-by:
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- 18 Jan, 2023 2 commits
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Magnus Karlsson authored
Document in the XDP_REDIRECT manual section that drivers must call xdp_do_flush() before napi_complete_done(). The two reasons behind this can be found following the links below. Signed-off-by:
Magnus Karlsson <magnus.karlsson@intel.com> Link: https://lore.kernel.org/r/20221220185903.1105011-1-sbohrer@cloudflare.com Link: https://lore.kernel.org/all/20210624160609.292325-1-toke@redhat.com/Acked-by:
Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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David S. Miller authored
Steen Hegelund says: ==================== sparx5: Improve locking in the VCAP API This improves the VCAP cache and the VCAP rule list protection against access from different sources. The VCAP Admin lock protects the list of rules for the VCAP instance as well as the cache used for encoding and decoding rules. This series provides dedicated functions for accessing rule statistics, decoding rule content, verifying if a rule exists and getting a rule with the lock held, as well as ensuring the use of the lock when the list of rules or the cache is accessed. ==================== Signed-off-by:
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