From 2ce313d1bb5b3fc8554b71e551b9f72ef7ac78d3 Mon Sep 17 00:00:00 2001 From: Oliver Hartkopp Date: Mon, 25 Jan 2021 11:40:55 +0100 Subject: [PATCH] iplink_can: add Classical CAN frame LEN8_DLC support The len8_dlc element is filled by the CAN interface driver and used for CAN frame creation by the CAN driver when the CAN_CTRLMODE_CC_LEN8_DLC flag is supported by the driver and enabled via netlink configuration interface. Add the command line support for cc-len8-dlc for Linux 5.11+ Signed-off-by: Oliver Hartkopp Signed-off-by: David Ahern --- ip/iplink_can.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/ip/iplink_can.c b/ip/iplink_can.c index 735ab941..6a26f3ff 100644 --- a/ip/iplink_can.c +++ b/ip/iplink_can.c @@ -37,6 +37,7 @@ static void print_usage(FILE *f) "\t[ fd { on | off } ]\n" "\t[ fd-non-iso { on | off } ]\n" "\t[ presume-ack { on | off } ]\n" + "\t[ cc-len8-dlc { on | off } ]\n" "\n" "\t[ restart-ms TIME-MS ]\n" "\t[ restart ]\n" @@ -103,6 +104,7 @@ static void print_ctrlmode(FILE *f, __u32 cm) _PF(CAN_CTRLMODE_FD, "FD"); _PF(CAN_CTRLMODE_FD_NON_ISO, "FD-NON-ISO"); _PF(CAN_CTRLMODE_PRESUME_ACK, "PRESUME-ACK"); + _PF(CAN_CTRLMODE_CC_LEN8_DLC, "CC-LEN8-DLC"); #undef _PF if (cm) print_hex(PRINT_ANY, NULL, "%x", cm); @@ -211,6 +213,10 @@ static int can_parse_opt(struct link_util *lu, int argc, char **argv, NEXT_ARG(); set_ctrlmode("presume-ack", *argv, &cm, CAN_CTRLMODE_PRESUME_ACK); + } else if (matches(*argv, "cc-len8-dlc") == 0) { + NEXT_ARG(); + set_ctrlmode("cc-len8-dlc", *argv, &cm, + CAN_CTRLMODE_CC_LEN8_DLC); } else if (matches(*argv, "restart") == 0) { __u32 val = 1;