kernel/include/linux/can/rx-offload.h, branch linux-5.11.y

can: rx-offload: can_rx_offload_add_manual(): add new initialization function

2020-09-21T08:13:19Z

This patch adds a new initialization function: can_rx_offload_add_manual() It should be used to add support rx-offload to a driver, if the callback mechanism should not be used. Use e.g. can_rx_offload_queue_sorted() to queue skbs into rx-offload. Link: https://lore.kernel.org/r/20200915223527.1417033-33-mkl@pengutronix.de Signed-off-by: Marc Kleine-Budde

can: rx-offload: Prepare for CAN FD support

2019-11-11T20:58:10Z

The skbs for classic CAN and CAN FD frames are allocated with seperate functions: alloc_can_skb() and alloc_canfd_skb(). In order to support CAN FD frames via the rx-offload helper, the driver itself has to allocate the skb (depending whether it received a classic CAN or CAN FD frame), as the rx-offload helper cannot know which kind of CAN frame the driver has received. This patch moves the allocation of the skb into the struct can_rx_offload::mailbox_read callbacks of the the flexcan and ti_hecc driver and adjusts the rx-offload helper accordingly. Signed-off-by: Joakim Zhang Signed-off-by: Marc Kleine-Budde

can: rx-offload: can_rx_offload_reset(): remove no-op function

2019-11-11T20:58:10Z

This patch removes the function can_rx_offload_reset(), as it does nothing. If we ever need this function, add it back again. Signed-off-by: Marc Kleine-Budde

can: dev: avoid long lines

2019-09-03T08:28:13Z

This patch fixes long lines in the generic CAN device infrastructure. Signed-off-by: Marc Kleine-Budde

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 495

2019-06-19T15:09:52Z

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the version 2 of the gnu general public license as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 10 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Enrico Weigelt Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.259525894@linutronix.de Signed-off-by: Greg Kroah-Hartman

can: rx-offload: rename can_rx_offload_irq_queue_err_skb() to can_rx_offload_queue_tail()

2018-11-09T16:33:32Z

This function has nothing todo with error. Signed-off-by: Oleksij Rempel Cc: linux-stable Signed-off-by: Marc Kleine-Budde

can: rx-offload: introduce can_rx_offload_get_echo_skb() and can_rx_offload_queue_sorted() functions

2018-11-09T16:20:49Z

Current CAN framework can't guarantee proper/chronological order of RX and TX-ECHO messages. To make this possible, drivers should use this functions instead of can_get_echo_skb(). Signed-off-by: Oleksij Rempel Cc: linux-stable Signed-off-by: Marc Kleine-Budde

can: rx-offload: Add support for timestamp based irq offloading

2017-02-06T14:13:24Z

Some CAN controllers don't implement a FIFO in hardware, but fill their mailboxes in a particular order (from lowest to highest or highest to lowest). This makes problems to read the frames in the correct order from the hardware, as new frames might be filled into just read (low) mailboxes. This gets worse, when following new frames are received into not read (higher) mailboxes. On the bright side some these CAN controllers put a timestamp on each received CAN frame. This patch adds support to offload CAN frames in interrupt context, order them by timestamp and then transmitted in a NAPI context. Signed-off-by: Marc Kleine-Budde

can: rx-offload: Add support for HW fifo based irq offloading

2017-02-06T14:13:23Z

Some CAN controllers have a usable FIFO already but can still benefit from off-loading the CAN controller FIFO. The CAN frames of the FIFO are read and put into a skb queue during interrupt and then transmitted in a NAPI context. Signed-off-by: David Jander Signed-off-by: Marc Kleine-Budde