diff options
| author | Vincent Mailhol <mailhol@kernel.org> | 2025-09-23 15:58:44 +0900 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2025-09-24 17:09:47 +0200 |
| commit | 7de54546fff11cb0a53f47847d62f7b1a5792d17 (patch) | |
| tree | e9212e051468f81c5962dda623beae78f872b29f /include/linux/can | |
| parent | 6ffc1230d3a728e07d7d2464f388ad4bbefe90c2 (diff) | |
can: dev: add can_get_ctrlmode_str()
In an effort to give more human readable messages when errors occur
because of conflicting options, it can be useful to convert the CAN
control mode flags into text.
Add a function which converts the first set CAN control mode into a
human readable string. The reason to only convert the first one is to
simplify edge cases: imagine that there are several invalid control
modes, we would just return the first invalid one to the user, thus
not having to handle complex string concatenation. The user can then
solve the first problem, call the netlink interface again and see the
next issue.
People who wish to enumerate all the control modes can still do so by,
for example, using this new function in a for_each_set_bit() loop.
Signed-off-by: Vincent Mailhol <mailhol@kernel.org>
Link: https://patch.msgid.link/20250923-canxl-netlink-prep-v4-19-e720d28f66fe@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'include/linux/can')
| -rw-r--r-- | include/linux/can/dev.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h index 8e75e9b3830a..a2229a61ccde 100644 --- a/include/linux/can/dev.h +++ b/include/linux/can/dev.h @@ -141,6 +141,8 @@ int can_restart_now(struct net_device *dev); void can_bus_off(struct net_device *dev); const char *can_get_state_str(const enum can_state state); +const char *can_get_ctrlmode_str(u32 ctrlmode); + void can_state_get_by_berr_counter(const struct net_device *dev, const struct can_berr_counter *bec, enum can_state *tx_state, |