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2022-07-21netfilter: flowtable: prefer refcount_incFlorian Westphal1-8/+3
With refcount_inc_not_zero, we'd also need a smp_rmb or similar, followed by a test of the CONFIRMED bit. However, the ct pointer is taken from skb->_nfct, its refcount must not be 0 (else, we'd already have a use-after-free bug). Use refcount_inc() instead to clarify the ct refcount is expected to be at least 1. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2022-07-21netfilter: ipvs: Use the bitmap API to allocate bitmapsChristophe JAILLET1-3/+2
Use bitmap_zalloc()/bitmap_free() instead of hand-writing them. It is less verbose and it improves the semantic. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Acked-by: Julian Anastasov <ja@ssi.bg> Acked-by: Simon Horman <horms@verge.net.au> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2022-07-20net: ipa: initialize ring indexes to 0Alex Elder2-10/+13
When a GSI channel is initially allocated, and after it has been reset, the hardware assumes its ring index is 0. And although we do initialize channels this way, the comments in the IPA code don't really explain this. For event rings, it doesn't matter what value we use initially, so using 0 is just fine. Add some information about the assumptions made by hardware above the definition of the gsi_ring structure in "gsi.h". Zero the index field for all rings (channel and event) when the ring is allocated. As a result, that function initializes all fields in the structure. Stop zeroing the index the top of gsi_channel_program(). Initially we'll use the index value set when the channel ring was allocated. And we'll explicitly zero the index value in gsi_channel_reset() before programming the hardware, adding a comment explaining why it's required. For event rings, use the index initialized by gsi_ring_alloc() rather than 0 when ringing the doorbell in gsi_evt_ring_program(). (It'll still be zero, but we won't assume that to be the case.) Use a local variable in gsi_evt_ring_program() that represents the address of the event ring's ring structure. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-07-20net: marvell: prestera: add phylink supportOleksandr Mazur5-62/+334
For SFP port prestera driver will use kernel phylink infrastucture to configure port mode based on the module that has beed inserted Co-developed-by: Yevhen Orlov <yevhen.orlov@plvision.eu> Signed-off-by: Yevhen Orlov <yevhen.orlov@plvision.eu> Co-developed-by: Taras Chornyi <taras.chornyi@plvision.eu> Signed-off-by: Taras Chornyi <taras.chornyi@plvision.eu> Signed-off-by: Oleksandr Mazur <oleksandr.mazur@plvision.eu> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-07-20vmxnet3: Implement ethtool's get_channels commandAndrey Turkin1-0/+29
Some tools (e.g. libxdp) use that information. Signed-off-by: Andrey Turkin <andrey.turkin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-07-20can: error: add definitions for the different CAN error thresholdsVincent Mailhol1-0/+13
Currently, drivers are using magic numbers to derive the CAN error states from the error counter. Add three macro declarations to remediate this. For reference, the error-active, error-passive and bus-off are defined in ISO 11898, section 12.1.4.2 "Error counting". Although ISO 11898 does not define error-warning state, this extra value is also commonly used and is thus also added. Link: https://lore.kernel.org/all/20220719143550.3681-13-mailhol.vincent@wanadoo.fr Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2022-07-20can: add CAN_ERR_CNT flag to notify availability of error counterVincent Mailhol25-18/+38
Add a dedicated flag in uapi/linux/can/error.h to notify the userland that fields data[6] and data[7] of the CAN error frame were respectively populated with the tx and rx error counters. For all driver tree-wide, set up this flags whenever needed. Link: https://lore.kernel.org/all/20220719143550.3681-12-mailhol.vincent@wanadoo.fr Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2022-07-20can: error: specify the values of data[5..7] of CAN error framesVincent Mailhol1-1/+4
Currently, data[5..7] of struct can_frame, when used as a CAN error frame, are defined as being "controller specific". Device specific behaviours are problematic because it prevents someone from writing code which is portable between devices. As a matter of fact, data[5] is never used, data[6] is always used to report TX error counter and data[7] is always used to report RX error counter. can-utils also relies on this. This patch updates the comment in the uapi header to specify that data[5] is reserved (and thus should not be used) and that data[6..7] are used for error counters. Fixes: 0d66548a10cb ("[CAN]: Add PF_CAN core module") Link: https://lore.kernel.org/all/20220719143550.3681-11-mailhol.vincent@wanadoo.fr Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2022-07-20can: usb_8dev: do not report txerr and rxerr during bus-offVincent Mailhol1-3/+4
During bus off, the error count is greater than 255 and can not fit in a u8. Fixes: 0024d8ad1639 ("can: usb_8dev: Add support for USB2CAN interface from 8 devices") Link: https://lore.kernel.org/all/20220719143550.3681-10-mailhol.vincent@wanadoo.fr Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2022-07-20can: kvaser_usb_leaf: do not report txerr and rxerr during bus-offVincent Mailhol1-2/+4
During bus off, the error count is greater than 255 and can not fit in a u8. Fixes: 7259124eac7d1 ("can: kvaser_usb: Split driver into kvaser_usb_core.c and kvaser_usb_leaf.c") Link: https://lore.kernel.org/all/20220719143550.3681-9-mailhol.vincent@wanadoo.fr CC: Jimmy Assarsson <extja@kvaser.com> Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2022-07-20can: kvaser_usb_hydra: do not report txerr and rxerr during bus-offVincent Mailhol1-4/+8
During bus off, the error count is greater than 255 and can not fit in a u8. Fixes: aec5fb2268b7 ("can: kvaser_usb: Add support for Kvaser USB hydra family") Link: https://lore.kernel.org/all/20220719143550.3681-8-mailhol.vincent@wanadoo.fr CC: Jimmy Assarsson <extja@kvaser.com> Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2022-07-20can: sun4i_can: do not report txerr and rxerr during bus-offVincent Mailhol1-5/+4
During bus off, the error count is greater than 255 and can not fit in a u8. Fixes: 0738eff14d81 ("can: Allwinner A10/A20 CAN Controller support - Kernel module") Link: https://lore.kernel.org/all/20220719143550.3681-7-mailhol.vincent@wanadoo.fr CC: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2022-07-20can: hi311x: do not report txerr and rxerr during bus-offVincent Mailhol1-2/+3
During bus off, the error count is greater than 255 and can not fit in a u8. Fixes: 57e83fb9b746 ("can: hi311x: Add Holt HI-311x CAN driver") Link: https://lore.kernel.org/all/20220719143550.3681-6-mailhol.vincent@wanadoo.fr Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2022-07-20can: slcan: do not report txerr and rxerr during bus-offVincent Mailhol1-7/+5
During bus off, the error count is greater than 255 and can not fit in a u8. alloc_can_err_skb() already sets cf to NULL if the allocation fails [1], so the redundant cf = NULL assignment gets removed. [1] https://elixir.bootlin.com/linux/latest/source/drivers/net/can/dev/skb.c#L187 Fixes: 0a9cdcf098a4 ("can: slcan: extend the protocol with CAN state info") Link: https://lore.kernel.org/all/20220719143550.3681-5-mailhol.vincent@wanadoo.fr CC: Dario Binacchi <dario.binacchi@amarulasolutions.com> Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2022-07-20can: sja1000: do not report txerr and rxerr during bus-offVincent Mailhol1-3/+4
During bus off, the error count is greater than 255 and can not fit in a u8. Fixes: 215db1856e83 ("can: sja1000: Consolidate and unify state change handling") Link: https://lore.kernel.org/all/20220719143550.3681-4-mailhol.vincent@wanadoo.fr Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2022-07-20can: rcar_can: do not report txerr and rxerr during bus-offVincent Mailhol1-4/+4
During bus off, the error count is greater than 255 and can not fit in a u8. Fixes: fd1159318e55 ("can: add Renesas R-Car CAN driver") Link: https://lore.kernel.org/all/20220719143550.3681-3-mailhol.vincent@wanadoo.fr Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2022-07-20can: pch_can: do not report txerr and rxerr during bus-offVincent Mailhol1-3/+3
During bus off, the error count is greater than 255 and can not fit in a u8. Fixes: 0c78ab76a05c ("pch_can: Add setting TEC/REC statistics processing") Link: https://lore.kernel.org/all/20220719143550.3681-2-mailhol.vincent@wanadoo.fr Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2022-07-19net/sched: remove qdisc_root_lock() helperDavide Caratti1-19/+0
the last caller has been removed with commit 96f5e66e8a79 ("mac80211: fix aggregation for hardware with ampdu queues"), so it's safe to remove this function. Signed-off-by: Davide Caratti <dcaratti@redhat.com> Link: https://lore.kernel.org/r/703d549e3088367651d92a059743f1be848d74b7.1658133689.git.dcaratti@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-19tcp: support externally provided ubufsPavel Begunkov1-11/+22
Teach tcp how to use external ubuf_info provided in msghdr and also prepare it for managed frags by sprinkling skb_zcopy_downgrade_managed() when it could mix managed and not managed frags. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-19ipv6/udp: support externally provided ubufsPavel Begunkov1-13/+31
Teach ipv6/udp how to use external ubuf_info provided in msghdr and also prepare it for managed frags by sprinkling skb_zcopy_downgrade_managed() when it could mix managed and not managed frags. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-19ipv4/udp: support externally provided ubufsPavel Begunkov1-13/+31
Teach ipv4/udp how to use external ubuf_info provided in msghdr and also prepare it for managed frags by sprinkling skb_zcopy_downgrade_managed() when it could mix managed and not managed frags. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-19net: introduce __skb_fill_page_desc_noaccPavel Begunkov1-11/+17
Managed pages contain pinned userspace pages and controlled by upper layers, there is no need in tracking skb->pfmemalloc for them. Introduce a helper for filling frags but ignoring page tracking, it'll be needed later. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-19net: introduce managed frags infrastructurePavel Begunkov2-4/+50
Some users like io_uring can do page pinning more efficiently, so we want a way to delegate referencing to other subsystems. For that add a new flag called SKBFL_MANAGED_FRAG_REFS. When set, skb doesn't hold page references and upper layers are responsivle to managing page lifetime. It's allowed to convert skbs from managed to normal by calling skb_zcopy_downgrade_managed(). The function will take all needed page references and clear the flag. It's needed, for instance, to avoid mixing managed modes. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-19net: Allow custom iter handler in msghdrDavid Ahern4-8/+19
Add support for custom iov_iter handling to msghdr. The idea is that in-kernel subsystems want control over how an SG is split. Signed-off-by: David Ahern <dsahern@kernel.org> [pavel: move callback into msghdr] Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-19skbuff: carry external ubuf_info in msghdrPavel Begunkov3-0/+4
Make possible for network in-kernel callers like io_uring to pass in a custom ubuf_info by setting it in a new field of struct msghdr. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-19sfc: update MCDI protocol headersEdward Cree1-195/+7933
Link: https://lore.kernel.org/r/cover.1657878101.git.ecree.xilinx@gmail.com Signed-off-by: Edward Cree <ecree.xilinx@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-19net/mlx5: CT: Remove warning of ignore_flow_level support for non PFRoi Dayan2-2/+2
ignore_flow_level isn't supported for SFs, and so it causes post_act and ct to warn about it per SF. Apply the warning only for PF. Signed-off-by: Roi Dayan <roid@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2022-07-19net/mlx5e: Add resiliency for PTP TX port timestampAya Levin5-2/+50
PTP TX port timestamp relies on receiving 2 CQEs for each outgoing packet (WQE). The regular CQE has a less accurate timestamp than the wire CQE. On link change, the wire CQE may get lost. Let the driver detect and restore the relation between the CQEs, and re-sync after timeout. Add resiliency for this as follows: add id (producer counter) into the WQE's metadata. This id will be received in the wire CQE (in wqe_counter field). On handling the wire CQE, if there is no match, replay the PTP application with the time-stamp from the regular CQE and restore the sync between the CQEs and their SKBs. This patch adds 2 ptp counters: 1) ptp_cq0_resync_event: number of times a mismatch was detected between the regular CQE and the wire CQE. 2) ptp_cq0_resync_cqe: total amount of missing wire CQEs. Signed-off-by: Aya Levin <ayal@nvidia.com> Reviewed-by: Tariq Toukan <tariqt@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2022-07-19net/mlx5: Expose ts_cqe_metadata_size2wqe_counterAya Levin1-1/+5
Add capability field which indicates the mask for wqe_counter which connects between loopback CQE and the original WQE. With this connection the driver can identify lost of the loopback CQE and reply PTP synchronization with timestamp given in the original CQE. Signed-off-by: Aya Levin <ayal@nvidia.com> Reviewed-by: Tariq Toukan <tariqt@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2022-07-19net/mlx5e: HTB, move htb functions to a new fileMoshe Tal7-746/+832
Move htb related functions and data to a separated file for better encapsulation. Signed-off-by: Moshe Tal <moshet@nvidia.com> Reviewed-by: Tariq Toukan <tariqt@nvidia.com> Reviewed-by: Maxim Mikityanskiy <maximmi@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2022-07-19net/mlx5e: HTB, change functions name to follow conventionMoshe Tal4-36/+36
Following the change of the functions to be object like, change also the names. Signed-off-by: Moshe Tal <moshet@nvidia.com> Reviewed-by: Tariq Toukan <tariqt@nvidia.com> Reviewed-by: Maxim Mikityanskiy <maximmi@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2022-07-19net/mlx5e: HTB, remove priv from htb function callsMoshe Tal4-150/+172
As a step to make htb self-contained replace the passing of priv as a parameter to htb function calls with members in the htb struct. Full decoupling the htb from priv will require more work, so for now leave the priv as one of the members in the htb struct, to be replaced by channels in a future commit. Signed-off-by: Moshe Tal <moshet@nvidia.com> Reviewed-by: Tariq Toukan <tariqt@nvidia.com> Reviewed-by: Maxim Mikityanskiy <maximmi@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2022-07-19net/mlx5e: HTB, hide and dynamically allocate mlx5e_htb structureSaeed Mahameed3-32/+70
Move structure mlx5e_htb from the main driver include file "en.h" to be hidden in qos.c where the qos functionality is implemented, forward declare it for the rest of the driver and allocate it dynamically upon user demand only. Signed-off-by: Saeed Mahameed <saeedm@nvidia.com> Signed-off-by: Moshe Tal <moshet@nvidia.com> Reviewed-by: Tariq Toukan <tariqt@nvidia.com> Reviewed-by: Maxim Mikityanskiy <maximmi@nvidia.com>
2022-07-19net/mlx5e: HTB, move stats and max_sqs to privMoshe Tal4-19/+19
Preparation for dynamic allocation of the HTB struct. The statistics should be preserved even when the struct is de-allocated. Signed-off-by: Moshe Tal <moshet@nvidia.com> Reviewed-by: Tariq Toukan <tariqt@nvidia.com> Reviewed-by: Maxim Mikityanskiy <maximmi@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2022-07-19net/mlx5e: HTB, move section comment to the right placeMoshe Tal1-2/+2
mlx5e_get_qos_sq is a part of the SQ lifecycle, so need be under the title. Signed-off-by: Moshe Tal <moshet@nvidia.com> Reviewed-by: Tariq Toukan <tariqt@nvidia.com> Reviewed-by: Maxim Mikityanskiy <maximmi@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2022-07-19net/mlx5e: HTB, move ids to selq_params structMoshe Tal6-34/+62
HTB id fields are needed for selecting queue. Moving them to the selq_params struct will simplify synchronization between control flow and mlx5e_select_queues and will keep the IDs in the hot cacheline of mlx5e_selq_params. Replace mlx5e_selq_prepare() with separate functions that change subsets of parameters, while keeping the rest. This also will be useful to hide mlx5e_htb structure from the rest of the driver in a later patch in this series. Signed-off-by: Saeed Mahameed <saeedm@nvidia.com> Signed-off-by: Moshe Tal <moshet@nvidia.com> Reviewed-by: Tariq Toukan <tariqt@nvidia.com> Reviewed-by: Maxim Mikityanskiy <maximmi@nvidia.com>
2022-07-19net/mlx5e: HTB, reduce visibility of htb functionsSaeed Mahameed3-74/+70
No need to expose all htb tc functions to the main driver file, expose only the master htb tc function mlx5e_htb_setup_tc() which selects the internal "now static" function to call. Signed-off-by: Saeed Mahameed <saeedm@nvidia.com> Signed-off-by: Moshe Tal <moshet@nvidia.com> Reviewed-by: Tariq Toukan <tariqt@nvidia.com> Reviewed-by: Maxim Mikityanskiy <maximmi@nvidia.com>
2022-07-19net/mlx5e: Fix mqprio_rl handling on devlink reloadMoshe Tal2-41/+106
Keep mqprio_rl data to params and restore the configuration in case of devlink reload. Change the location of mqprio_rl resources cleanup so it will be done also in reload flow. Also, remove the rl pointer from the params, since this is dynamic object and saved to priv. Signed-off-by: Moshe Tal <moshet@nvidia.com> Reviewed-by: Tariq Toukan <tariqt@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2022-07-19net/mlx5e: Report header-data split state through ethtoolGal Pressman4-5/+14
HW-GRO (SHAMPO) packet merger scheme implies header-data split in the driver, report it through the ethtool interface. Signed-off-by: Gal Pressman <gal@nvidia.com> Reviewed-by: Tariq Toukan <tariqt@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
2022-07-19can: peak_usb: include support for a new MCUStephane Grosjean1-10/+58
The CANFD-USB PCAN-USB FD interface undergoes an internal component change that requires a slight modification of its drivers, which leads them to dynamically use endpoint numbers provided by the interface itself. In addition to a change in the calls to the USB functions exported by the kernel, the detection of the USB interface dedicated to CAN must also be modified, as some PEAK-System devices support other interfaces than CAN. Link: https://lore.kernel.org/all/20220719120632.26774-3-s.grosjean@peak-system.com Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com> [mkl: add missing cpu_to_le16() conversion] [mkl: fix networking block comment style] Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2022-07-19can: peak_usb: correction of an initially misnamed field nameStephane Grosjean2-2/+2
The data structure returned from the USB device contains a number flashed by the user and not the serial number of the device. Link: https://lore.kernel.org/all/20220719120632.26774-2-s.grosjean@peak-system.com Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2022-07-19can: peak_usb: pcan_dump_mem(): mark input prompt and data pointer as constStephane Grosjean2-2/+2
Mark the input prompt and data pointer as const. Link: https://lore.kernel.org/all/20220719120632.26774-1-s.grosjean@peak-system.com Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com> [mkl: mark data pointer as const, too; update commit message] Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2022-07-19can: ctucanfd: Update CTU CAN FD IP core registers to match version 3.x.Pavel Pisa1-4/+28
The update is compatible/pure extension of 2.x IP core version - new option for 2, 4, or 8 Tx buffers option during synthesis. The 2.x version has fixed 4 Tx buffers. 3.x version default is 4 as well - new REG_TX_COMMAND_TXT_BUFFER_COUNT provides synthesis choice. When read as 0 assume 2.x core with fixed 4 Tx buffers. - new REG_ERR_CAPT_TS_BITS field to provide most significant active/implemented timestamp bit. For 2.x read as zero, assume value 63 is such case for 64 bit counter. - new REG_MODE_RXBAM bit which controls automatic advance to next word after Rx FIFO register read. Bit is set to 1 by default after the core reset (REG_MODE_RST) and value 1 has to be preserved for the normal ctucanfd Linux driver operation. Even preceding driver version resets core and then modifies only known/required MODE register bits so backward and forward compatibility is ensured. See complete datasheet for time-triggered and other updated capabilities http://canbus.pages.fel.cvut.cz/ctucanfd_ip_core/doc/Datasheet.pdf The fields related to ongoing Ondrej Ille's work on fault tolerant version with parity protected buffers and FIFOs are not included for now. Their inclusion will be considered when design is settled and tested. Link: https://lore.kernel.org/all/14a98ed1829121f0f3bde784f1aa533bc3cc7fe0.1658139843.git.pisa@cmp.felk.cvut.cz Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2022-07-19can: c_can: remove wrong commentDario Binacchi1-1/+0
The comment referred to a status (warning) other than the one that was being managed (active error). Link: https://lore.kernel.org/all/20220716170112.2020291-1-dario.binacchi@amarulasolutions.com Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2022-07-19can: slcan: do not sleep with a spin lock heldDario Binacchi1-4/+3
We can't call close_candev() with a spin lock held, so release the lock before calling it. After calling close_candev(), we can update the fields of the private `struct can_priv' without having to acquire the lock. Fixes: c4e54b063f42f ("can: slcan: use CAN network device driver API") Link: https://lore.kernel.org/linux-kernel/Ysrf1Yc5DaRGN1WE@xsang-OptiPlex-9020/ Link: https://lore.kernel.org/all/20220715072951.859586-1-dario.binacchi@amarulasolutions.com Reported-by: kernel test robot <oliver.sang@intel.com> Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2022-07-19can: sja1000: Change the return type as void for SoC specific initBiju Das1-9/+4
Change the return type as void for SoC specific init function as it always return 0. Link: https://lore.kernel.org/all/20220710115248.190280-6-biju.das.jz@bp.renesas.com Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2022-07-19can: sja1000: Use device_get_match_data to get device dataBiju Das1-5/+2
This patch replaces of_match_device->device_get_match_data to get pointer to device data. Link: https://lore.kernel.org/all/20220710115248.190280-5-biju.das.jz@bp.renesas.com Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2022-07-19can: sja1000: Add Quirk for RZ/N1 SJA1000 CAN controllerBiju Das2-4/+7
As per Chapter 6.5.16 of the RZ/N1 Peripheral Manual, The SJA1000 CAN controller does not support Clock Divider Register compared to the reference Philips SJA1000 device. This patch adds a device quirk to handle this difference. Link: https://lore.kernel.org/all/20220710115248.190280-4-biju.das.jz@bp.renesas.com Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2022-07-19dt-bindings: can: nxp,sja1000: Document RZ/N1{D,S} supportBiju Das1-4/+35
Add CAN binding documentation for Renesas RZ/N1 SoC. The SJA1000 CAN controller on RZ/N1 SoC has some differences compared to others like it has no clock divider register (CDR) support and it has no HW loopback (HW doesn't see tx messages on rx), so introduced a new compatible 'renesas,rzn1-sja1000' to handle these differences. Link: https://lore.kernel.org/all/20220710115248.190280-3-biju.das.jz@bp.renesas.com Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2022-07-19dt-bindings: can: sja1000: Convert to json-schemaBiju Das2-58/+101
Convert the NXP SJA1000 CAN Controller Device Tree binding documentation to json-schema. Update the example to match reality. Link: https://lore.kernel.org/all/20220710115248.190280-2-biju.das.jz@bp.renesas.com Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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