linux/net/can
Vincent Mailhol eb88531bdb can: raw: add missing error queue support
Error queue are not yet implemented in CAN-raw sockets.

The problem: a userland call to recvmsg(soc, msg, MSG_ERRQUEUE) on a
CAN-raw socket would unqueue messages from the normal queue without
any kind of error or warning. As such, it prevented CAN drivers from
using the functionalities that relies on the error queue such as
skb_tx_timestamp().

SCM_CAN_RAW_ERRQUEUE is defined as the type for the CAN raw error
queue. SCM stands for "Socket control messages". The name is inspired
from SCM_J1939_ERRQUEUE of include/uapi/linux/can/j1939.h.

Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/r/20200926162527.270030-1-mailhol.vincent@wanadoo.fr
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2020-10-06 22:44:27 +02:00
..
j1939 treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
af_can.c can: af_can: can_rcv_list_find(): fix kernel doc after variable renaming 2020-10-06 22:42:07 +02:00
af_can.h can: introduce CAN midlayer private and allocate it automatically 2019-09-04 13:29:14 +02:00
bcm.c can: remove "WITH Linux-syscall-note" from SPDX tag of C files 2020-09-21 10:13:16 +02:00
gw.c can: remove "WITH Linux-syscall-note" from SPDX tag of C files 2020-09-21 10:13:16 +02:00
Kconfig treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
Makefile can: add support of SAE J1939 protocol 2019-09-04 14:22:33 +02:00
proc.c can: remove "WITH Linux-syscall-note" from SPDX tag of C files 2020-09-21 10:13:16 +02:00
raw.c can: raw: add missing error queue support 2020-10-06 22:44:27 +02:00