summaryrefslogtreecommitdiff
path: root/include/uapi/linux/can
diff options
context:
space:
mode:
authorVincent Mailhol <mailhol.vincent@wanadoo.fr>2020-09-26 19:24:31 +0300
committerMarc Kleine-Budde <mkl@pengutronix.de>2020-10-06 23:44:27 +0300
commiteb88531bdbfaafb827192d1fc6c5a3fcc4fadd96 (patch)
treed843b06c739fdb711ce558ae1851d40caa90b737 /include/uapi/linux/can
parentd61469dc87ad928b16b1edd90fb59e401c3f4565 (diff)
downloadlinux-eb88531bdbfaafb827192d1fc6c5a3fcc4fadd96.tar.xz
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>
Diffstat (limited to 'include/uapi/linux/can')
-rw-r--r--include/uapi/linux/can/raw.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/uapi/linux/can/raw.h b/include/uapi/linux/can/raw.h
index 6a11d308eb5c..3386aa81fdf2 100644
--- a/include/uapi/linux/can/raw.h
+++ b/include/uapi/linux/can/raw.h
@@ -49,6 +49,9 @@
#include <linux/can.h>
#define SOL_CAN_RAW (SOL_CAN_BASE + CAN_RAW)
+enum {
+ SCM_CAN_RAW_ERRQUEUE = 1,
+};
/* for socket options affecting the socket (not the global system) */