- 01 Dec, 2022 30 commits
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Vladimir Oltean authored
There are 2 requirements for correct code: - Any time the driver accesses the priv->mac pointer at runtime, it either holds NULL to indicate a DPNI-DPNI connection (or unconnected DPNI), or a struct dpaa2_mac whose phylink instance was fully initialized (created and connected to the PHY). No changes are made to priv->mac while it is being used. Currently, rtnl_lock() watches over the call to dpaa2_eth_connect_mac(), so it serves the purpose of serializing this with all readers of priv->mac. - dpaa2_mac_connect() should run unlocked, because inside it are 2 phylink calls with incompatible locking requirements: phylink_create() requires that the rtnl_mutex isn't held, and phylink_fwnode_phy_connect() requires that the rtnl_mutex is held. The only way to solve those contradictory requirements is to let dpaa2_mac_connect() take rtnl_lock() when it needs to. To solve both requirements, we need to identify the writer side of the priv->mac pointer, which can be wrapped in a mutex private to the driver in a future patch. The dpaa2_mac_connect() cannot be part of the writer side critical section, because of an AB/BA deadlock with rtnl_lock(). So the strategy needs to be that where we prepare the DPMAC by calling dpaa2_mac_connect(), and only make priv->mac point to it once it's fully prepared. This ensures that the writer side critical section has the absolute minimum surface it can. The reverse strategy is adopted in the dpaa2_eth_disconnect_mac() code path. This makes sure that priv->mac is NULL when we start tearing down the DPMAC that we disconnected from, and concurrent code will simply not see it. No locking changes in this patch (concurrent code is still blocked by the rtnl_mutex). Signed-off-by:
Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by:
Ioana Ciornei <ioana.ciornei@nxp.com> Tested-by:
Paolo Abeni <pabeni@redhat.com>
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Vladimir Oltean authored
dpaa2_mac_disconnect() will only be called with a NULL mac->phylink if dpaa2_mac_connect() failed, or was never called. The callers are these: dpaa2_eth_disconnect_mac(): if (dpaa2_eth_is_type_phy(priv)) dpaa2_mac_disconnect(priv->mac); dpaa2_switch_port_disconnect_mac(): if (dpaa2_switch_port_is_type_phy(port_priv)) dpaa2_mac_disconnect(port_priv->mac); priv->mac can be NULL, but in that case, dpaa2_eth_is_type_phy() returns false, and dpaa2_mac_disconnect() is never called. Similar for dpaa2-switch. When priv->mac is non-NULL, it means that dpaa2_mac_connect() returned zero (success), and therefore, priv->mac->phylink is also a valid pointer. Signed-off-by:
Andrew Lunn <andrew@lunn.ch> Reviewed-by:
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Vladimir Oltean authored
The phylink handling is intended to be hidden inside the dpaa2_mac object. Move the phylink_start() call into dpaa2_mac_start(), and phylink_stop() into dpaa2_mac_stop(). Signed-off-by:
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Vladimir Oltean authored
dpaa2_mac_is_type_fixed() is a header with no implementation and no callers, which is referenced from the documentation though. It can be deleted. On the other hand, it would be useful to reuse the code between dpaa2_eth_is_type_phy() and dpaa2_switch_port_is_type_phy(). That common code should be called dpaa2_mac_is_type_phy(), so let's create that. The removal and the addition are merged into the same patch because, in fact, is_type_phy() is the logical opposite of is_type_fixed(). Signed-off-by:
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Vladimir Oltean authored
dpaa2_eth_setup_dpni() is called from the probe path and dpaa2_eth_set_link_ksettings() is propagated to user space. include/linux/errno.h says that ENOTSUPP is "Defined for the NFSv3 protocol". Conventional wisdom has it to not use it in networking drivers. Replace it with -EOPNOTSUPP. Signed-off-by:
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Dan Carpenter authored
If vcap_dup_rule() fails that leads to an error pointer dereference side the call to vcap_free_rule(). Also it only returns an error if the very last call to vcap_read_rule() fails and it returns success for other errors. I've changed it to just stop printing after the first error and return an error code. Fixes: 3a792156 ("net: microchip: sparx5: Add VCAP rule debugFS support for the VCAP API") Signed-off-by:
Dan Carpenter <error27@gmail.com> Reviewed-by:
Steen Hegelund <Steen.Hegelund@microchip.com> Link: https://lore.kernel.org/r/Y4XUUx9kzurBN+BV@kiliSigned-off-by:
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Dan Carpenter authored
The "ignore_updelay" variable needs to be initialized to false. Fixes: f8a65ab2 ("bonding: fix link recovery in mode 2 when updelay is nonzero") Signed-off-by:
Pavan Chebbi <pavan.chebbi@broadcom.com> Acked-by:
Jay Vosburgh <jay.vosburgh@canonical.com> Link: https://lore.kernel.org/r/Y4SWJlh3ohJ6EPTL@kiliSigned-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linuxJakub Kicinski authored
Saeed Mahameed says: ==================== mlx5-updates-2022-11-29 Misc update for mlx5 driver 1) Various trivial cleanups 2) Maor Dickman, Adds support for trap offload with additional actions 3) From Tariq, UMR (device memory registrations) cleanups, UMR WQE must be aligned to 64B per device spec, (not a bug fix). * tag 'mlx5-updates-2022-11-29' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux: net/mlx5e: Support devlink reload of IPsec core net/mlx5e: TC, Add offload support for trap with additional actions net/mlx5e: Do early return when setup vports dests for slow path flow net/mlx5: Remove redundant check net/mlx5e: Delete always true DMA check net/mlx5e: Don't access directly DMA device pointer net/mlx5e: Don't use termination table when redundant net/mlx5: Fix orthography errors in documentation net/mlx5: Use generic definition for UMR KLM alignment net/mlx5: Generalize name of UMR alignment definition net/mlx5: Remove unused UMR MTT definitions net/mlx5e: Add padding when needed in UMR WQEs net/mlx5: Remove unused ctx variables net/mlx5e: Replace zero-length arrays with DECLARE_FLEX_ARRAY() helper net/mlx5e: Remove unneeded io-mapping.h #include ==================== Link: https://lore.kernel.org/r/20221130051152.479480-1-saeed@kernel.orgSigned-off-by:
Jakub Kicinski <kuba@kernel.org>
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Xiaolei Wang authored
If the external phy used by current mac interface is managed by another mac interface, it means that this network port cannot work independently, especially when the system suspends and resumes, the following trace may appear, so we should create a device link between phy dev and mac dev. WARNING: CPU: 0 PID: 24 at drivers/net/phy/phy.c:983 phy_error+0x20/0x68 Modules linked in: CPU: 0 PID: 24 Comm: kworker/0:2 Not tainted 6.1.0-rc3-00011-g5aaef24b-dirty #34 Hardware name: Freescale i.MX6 SoloX (Device Tree) Workqueue: events_power_efficient phy_state_machine unwind_backtrace from show_stack+0x10/0x14 show_stack from dump_stack_lvl+0x68/0x90 dump_stack_lvl from __warn+0xb4/0x24c __warn from warn_slowpath_fmt+0x5c/0xd8 warn_slowpath_fmt from phy_error+0x20/0x68 phy_error from phy_state_machine+0x22c/0x23c phy_state_machine from process_one_work+0x288/0x744 process_one_work from worker_thread+0x3c/0x500 worker_thread from kthread+0xf0/0x114 kthread from ret_from_fork+0x14/0x28 Exception stack(0xf0951fb0 to 0xf0951ff8) Signed-off-by:
Xiaolei Wang <xiaolei.wang@windriver.com> Tested-by:
Florian Fainelli <f.fainelli@gmail.com> Reviewed-by:
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Jakub Kicinski authored
Vincent Mailhol says: ==================== net: devlink: return the driver name in devlink_nl_info_fill The driver name is available in device_driver::name. Right now, drivers still have to report this piece of information themselves in their devlink_ops::info_get callback function. The goal of this series is to have the devlink core to report this information instead of the drivers. The first patch fulfills the actual goal of this series: modify devlink core to report the driver name and clean-up all drivers. Both have to be done in an atomic change to avoid attribute duplication. This same patch also removes the devlink_info_driver_name_put() function to prevent future drivers from reporting the driver name themselves. The second patch allows the core to call devlink_nl_info_fill() even if the devlink_ops::info_get() callback is NULL. This leads to the third and final patch which cleans up the drivers which have an empty info_get(). ==================== Link: https://lore.kernel.org/r/20221129095140.3913303-1-mailhol.vincent@wanadoo.frSigned-off-by:
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Vincent Mailhol authored
devlink_ops::info_get() is now optional and devlink will continue to report information even if that callback gets removed. Remove all the empty devlink_ops::info_get() callbacks from the drivers. Signed-off-by:
Vincent Mailhol <mailhol.vincent@wanadoo.fr> Reviewed-by:
Jacob Keller <jacob.e.keller@intel.com> Reviewed-by:
Jiri Pirko <jiri@nvidia.com> Signed-off-by:
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Vincent Mailhol authored
Some drivers only reported the driver name in their devlink_ops::info_get() callback. Now that the core provides this information, the callback became empty. For such drivers, just removing the callback would prevent the core from executing devlink_nl_info_fill() meaning that "devlink dev info" would not return anything. Make the callback function optional by executing devlink_nl_info_fill() even if devlink_ops::info_get() is NULL. N.B.: the drivers with devlink support which previously did not implement devlink_ops::info_get() will now also be able to report the driver name. Signed-off-by:
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Vincent Mailhol authored
The driver name is available in device_driver::name. Right now, drivers still have to report this piece of information themselves in their devlink_ops::info_get callback function. In order to factorize code, make devlink_nl_info_fill() add the driver name attribute. Now that the core sets the driver name attribute, drivers are not supposed to call devlink_info_driver_name_put() anymore. Remove devlink_info_driver_name_put() and clean-up all the drivers using this function in their callback. Signed-off-by:
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Luca Weiss authored
The NQ310 is another NFC chip from NXP, document the compatible in the bindings. Signed-off-by:
Luca Weiss <luca@z3ntu.xyz> Acked-by:
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20221128173744.833018-1-luca@z3ntu.xyzSigned-off-by:
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Jakub Kicinski authored
Jacob Keller says: ==================== support direct read from region A long time ago when initially implementing devlink regions in ice I proposed the ability to allow reading from a region without taking a snapshot [1]. I eventually dropped this work from the original series due to size. Then I eventually lost track of submitting this follow up. This can be useful when interacting with some region that has some definitive "contents" from which snapshots are made. For example the ice driver has regions representing the contents of the device flash. If userspace wants to read the contents today, it must first take a snapshot and then read from that snapshot. This makes sense if you want to read a large portion of data or you want to be sure reads are consistently from the same recording of the flash. However if user space only wants to read a small chunk, it must first generate a snapshot of the entire contents, perform a read from the snapshot, and then delete the snapshot after reading. For such a use case, a direct read from the region makes more sense. This can be achieved by allowing the devlink region read command to work without a snapshot. Instead the portion to be read can be forwarded directly to the driver via a new .read callback. This avoids the need to read the entire region contents into memory first and avoids the software overhead of creating a snapshot and then deleting it. This series implements such behavior and hooks up the ice NVM and shadow RAM regions to allow it. [1] https://lore.kernel.org/netdev/20200130225913.1671982-1-jacob.e.keller@intel.com/ ==================== Link: https://lore.kernel.org/r/20221128203647.1198669-1-jacob.e.keller@intel.comSigned-off-by:
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Jacob Keller authored
Implement the .read handler for the NVM and Shadow RAM regions. This enables user space to read a small chunk of the flash without needing the overhead of creating a full snapshot. Update the documentation for ice to detail which regions have direct read support. Signed-off-by:
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Jacob Keller authored
78ad87da ("ice: devlink: add shadow-ram region to snapshot Shadow RAM") added support for the 'shadow-ram' devlink region, but did not document it in the ice devlink documentation. Fix this. Signed-off-by:
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Jacob Keller authored
The ice driver supports a region for both the flat NVM contents as well as the Shadow RAM which is a layer built on top of the flash during device initialization. These regions use an almost identical read function, except that the NVM needs to set the direct flag when reading, while Shadow RAM needs to read without the direct flag set. They each call ice_read_flat_nvm with the only difference being whether to set the direct flash flag. The NVM region read function also was fixed to read the NVM in blocks to avoid a situation where the firmware reclaims the lock due to taking too long. Note that the region snapshot function takes the ops pointer so the function can easily determine which region to read. Make use of this and re-use the NVM snapshot function for both the NVM and Shadow RAM regions. This makes Shadow RAM benefit from the same block approach as the NVM region. It also reduces code in the ice driver. Signed-off-by:
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Jacob Keller authored
To read from a region, user space must currently request a new snapshot of the region and then read from that snapshot. This can sometimes be overkill if user space only reads a tiny portion. They first create the snapshot, then request a read, then destroy the snapshot. For regions which have a single underlying "contents", it makes sense to allow supporting direct reading of the region data. Extend the DEVLINK_CMD_REGION_READ to allow direct reading from a region if requested via the new DEVLINK_ATTR_REGION_DIRECT. If this attribute is set, then perform a direct read instead of using a snapshot. Direct read is mutually exclusive with DEVLINK_ATTR_REGION_SNAPSHOT_ID, and care is taken to ensure that we reject commands which provide incorrect attributes. Regions must enable support for direct read by implementing the .read() callback function. If a region does not support such direct reads, a suitable extended error message is reported. Signed-off-by:
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Jacob Keller authored
The devlink_nl_region_read_snapshot_fill is used to copy the contents of a snapshot into a message for reporting to userspace via the DEVLINK_CMG_REGION_READ netlink message. A future change is going to add support for directly reading from a region. Almost all of the logic for this new capability is identical. To help reduce code duplication and make this logic more generic, refactor the function to take a cb and cb_priv pointer for doing the actual copy. Add a devlink_region_snapshot_fill implementation that will simply copy the relevant chunk of the region. This does require allocating some storage for the chunk as opposed to simply passing the correct address forward to the devlink_nl_cmg_region_read_chunk_fill function. A future change to implement support for directly reading from a region without a snapshot will provide a separate implementation that calls the newly added devlink region operation. Signed-off-by:
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Jacob Keller authored
The devlink parameter of the devlink_nl_cmd_region_read_chunk_fill function is not used. Remove it, to simplify the function signature. Once removed, it is also obvious that the devlink parameter is not necessary for the devlink_nl_region_read_snapshot_fill either. Signed-off-by:
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Jacob Keller authored
The snapshot pointer is obtained inside of the function devlink_nl_region_read_snapshot_fill. Simplify this function by locating the snapshot upfront in devlink_nl_cmd_region_read_dumpit instead. This aligns with how other netlink attributes are handled, and allows us to exit slightly earlier if an invalid snapshot ID is provided. It also allows us to pass the snapshot pointer directly to the devlink_nl_region_read_snapshot_fill, and remove the now unused attrs parameter. Signed-off-by:
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Jacob Keller authored
Report extended error details in the devlink_nl_cmd_region_read_dumpit() function, by using the extack structure from the netlink_callback. Signed-off-by:
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Jacob Keller authored
The calculation for the data_size in the devlink_nl_read_snapshot_fill function uses an if statement that is better expressed using the min_t macro. Signed-off-by:
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Horatiu Vultur authored
Currently whenever a new rule id is generated, it picks up the next number bigger than previous id. So it would always be 1, 2, 3, etc. When the rule with id 1 will be deleted and a new rule will be added, it will have the id 4 and not id 1. In theory this can be a problem if at some point a rule will be added and removed ~0 times. Then no more rules can be added because there are no more ids. Change this such that when a new rule is added, search for an empty rule id starting with value of 1 as value 0 is reserved. Fixes: c9da1ac1 ("net: microchip: sparx5: Adding initial tc flower support for VCAP API") Signed-off-by:
Horatiu Vultur <horatiu.vultur@microchip.com> Link: https://lore.kernel.org/r/20221128142959.8325-1-horatiu.vultur@microchip.comSigned-off-by:
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Christophe JAILLET authored
We know that table_size = table->mem_table.depth * table->mem_table.ways, so use it instead, it is less verbose. Signed-off-by:
Christophe JAILLET <christophe.jaillet@wanadoo.fr> Link: https://lore.kernel.org/r/5230dabe27f48948a9fd0f50a62e2437b65e6a6e.1669378798.git.christophe.jaillet@wanadoo.frSigned-off-by:
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Christophe JAILLET authored
This allocation is really spurious. The size of the bitmap is 'tot_ids' and it is used as such in the driver. So we could expect something like: table->id_bmap = devm_kcalloc(rvu->dev, BITS_TO_LONGS(table->tot_ids), sizeof(long), GFP_KERNEL); However, when the bitmap is allocated, we allocate: BITS_TO_LONGS(table->tot_ids) * table->tot_ids ~= table->tot_ids / 32 * table->tot_ids ~= table->tot_ids^2 / 32 It is proportional to the square of 'table->tot_ids' which seems to potentially be big. Allocate the expected amount of memory, and switch to the bitmap API to have it more straightforward. Signed-off-by:
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Christophe JAILLET authored
Use devm_bitmap_zalloc() instead of hand-writing it. This also makes the comment "Allocate bitmap for 32 entry mcam" more explicit because now 32 is really used in the allocation function, instead of an obscure 'sizeof(long)'. Signed-off-by:
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Christophe JAILLET authored
Use kzalloc() instead of kmalloc()/memset(). Signed-off-by:
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Christophe JAILLET authored
When this error message is displayed, we know that the all the bits in the bitmap are set. So, bitmap_weight() will return the number of bits of the bitmap, which is 'table->tot_ids'. It is unlikely that a bit will be cleared between mutex_unlock() and dev_err(), but, in order to simplify the code and avoid this possibility, just take 'table->tot_ids'. Signed-off-by:
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- 30 Nov, 2022 10 commits
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Willem de Bruijn authored
Test NIC hardware checksum offload: - Rx + Tx - IPv4 + IPv6 - TCP + UDP Optional features: - zero checksum 0xFFFF - checksum disable 0x0000 - transport encap headers - randomization See file header for detailed comments. Expected results differ depending on NIC features: - CHECKSUM_UNNECESSARY vs CHECKSUM_COMPLETE - NETIF_F_HW_CSUM (csum_start/csum_off) vs NETIF_F_IP(V6)_CSUM Signed-off-by:
Willem de Bruijn <willemb@google.com> Link: https://lore.kernel.org/r/20221128140210.553391-1-willemdebruijn.kernel@gmail.comSigned-off-by:
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Leon Romanovsky authored
Change IPsec initialization flow to allow future creation of hardware resources that should be released and allocated during devlink reload operation. As part of that change, update function signature to be void as no callers are actually interested in it. Reviewed-by:
Saeed Mahameed <saeedm@nvidia.com> Signed-off-by:
Leon Romanovsky <leonro@nvidia.com> Signed-off-by:
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Maor Dickman authored
TC trap action offload is currently supported only when trap is the sole action in the flow. This patch remove this limitation by changing trap action offload to not use MLX5_ATTR_FLAG_SLOW_PATH flag and instead set the flow destination table explicitly to be the slow table. This will allow offload of the additional actions. TC flow example: tc filter add dev $REP2 protocol ip prio 2 root \ flower skip_sw dst_mac $mac0 \ action mirred egress redirect dev $REP3 \ action pedit ex munge eth dst set $mac2 pipe \ action trap Signed-off-by:
Maor Dickman <maord@nvidia.com> Reviewed-by:
Raed Salem <raeds@nvidia.com> Reviewed-by:
Roi Dayan <roid@nvidia.com> Signed-off-by:
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Roi Dayan authored
Adding flow flag cases in setup vport dests before the slow path case is incorrect as the slow path should take precedence. Current code doesn't show this importance so make the slow path case return early and separate from the other cases and remove the redundant comparison of it in the sample case. Signed-off-by:
Chris Mi <cmi@nvidia.com> Reviewed-by:
Oz Shlomo <ozsh@nvidia.com> Signed-off-by:
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Leon Romanovsky authored
If ASO failed in creation, it won't be called to destroy either. The kernel coding pattern is to make sure that callers are calling to destroy only for valid objects. Reviewed-by:
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Leon Romanovsky authored
DMA address always exists for MACsec ASO object. Reviewed-by:
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Leon Romanovsky authored
Use specialized helper to fetch DMA device pointer. Reviewed-by:
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Roi Dayan authored
Current code used termination table for each vport destination while it's only required for hairpin, i.e. uplink to uplink, or when vlan push on rx action being used. Fix to skip using termination table for vport destinations that do not require it. Signed-off-by:
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Rahul Rameshbabu authored
Improve general readability of the device driver documentation. Signed-off-by:
Rahul Rameshbabu <rrameshbabu@nvidia.com> Reviewed-by:
Tariq Toukan <tariqt@nvidia.com> Reviewed-by:
Gal Pressman <gal@nvidia.com> Signed-off-by:
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Tariq Toukan authored
MLX5_UMR_KLM_ALIGNMENT is in units of number of entries, while MLX5_UMR_MTT_ALIGNMENT (generalized and renamed to MLX5_UMR_FLEX_ALIGNMENT) is in byte units. This is misleading and confusing. Replace this KLM definition with one based on the generic definition. Signed-off-by:
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