The CAN with eXtended data Length (CAN XL) is a new CAN protocol with a 10Mbit/s data transfer with a new physical layer transceiver (for this data section). CAN XL allows up to 2048 byte of payload and shares the arbitration principle (11 bit priority) known from Classical CAN and CAN FD. RTR and 29 bit identifiers are not implemented in CAN XL. A short introdution to CAN XL can be found here: https://www.bosch-semiconductors.com/media/ip_modules/pdf_2/can_xl_1/canxl_intro_20210225.pdf V2: Major rework after discussion and feedback on Linux-CAN ML - rework of struct canxl_frame - CANXL_XLF flag is now the switch between CAN XL and CAN/CANFD - variable length in r/w operations for CAN XL frames - write CAN XL frame to raw socket enforces size <-> canxl_frame.len sync V3: Fix length for CAN XL frames inside the sk_buff - extend the CAN_RAW sockopt to handle fixed/truncated read/write operations V4: Fix patch 5 (can: raw: add CAN XL support) - fix return value (move 'err = -EINVAL' in raw_sendmsg()) - add CAN XL frame handling in can_rcv() - change comment for CAN_RAW_XL_[RT]X_DYN definition (allow -> enable) V5: Remove CAN_RAW_XL_[RT]X_DYN definition again - CAN_RAW_XL_[RT]X_DYN (truncated data) feature is now enabled by default - use CANXL_MIN_DLEN instead of '1' in canxl_frame definition - add missing 'err = -EINVAL' initialization in raw_sendmsg()) V6: - rework an separate skb identification and length helpers - add CANFD_FDF flag in all CAN FD frame structures - simplify patches for infrastructure and raw sockets - add vxcan support in virtual CAN interface patch V7: - fixed indention as remarked by Marc - set CANFD_FDF flag when detecting CAN FD frames generated by PF_PACKET - Allow to use variable CAN XL MTU sizes to enforce real time requirements on CAN XL segments (e.g. to support of CAN CiA segmentation concept) Oliver Hartkopp (7): can: skb: unify skb CAN frame identification helpers can: skb: add skb CAN frame data length helpers can: set CANFD_FDF flag in all CAN FD frame structures can: canxl: introduce CAN XL data structure can: canxl: update CAN infrastructure for CAN XL frames can: dev: add CAN XL support to virtual CAN can: raw: add CAN XL support drivers/net/can/ctucanfd/ctucanfd_base.c | 1 - drivers/net/can/dev/rx-offload.c | 2 +- drivers/net/can/dev/skb.c | 113 ++++++++++++++++------- drivers/net/can/vcan.c | 12 +-- drivers/net/can/vxcan.c | 8 +- include/linux/can/dev.h | 5 + include/linux/can/skb.h | 57 +++++++++++- include/uapi/linux/can.h | 55 ++++++++++- include/uapi/linux/can/raw.h | 1 + include/uapi/linux/if_ether.h | 1 + net/can/af_can.c | 76 ++++++++------- net/can/bcm.c | 9 +- net/can/gw.c | 4 +- net/can/isotp.c | 2 +- net/can/j1939/main.c | 4 + net/can/raw.c | 55 ++++++++--- 16 files changed, 299 insertions(+), 106 deletions(-) -- 2.30.2
