From: Gal Pressman <g...@mellanox.com>
Extend the net device error logging with netdev_*_once macros.
netdev_*_once are the equivalents of the dev_*_once macros which are
useful for messages that should only be logged once.
Also add netdev_WARN_ONCE, which is the "once" extension for the already
existing netdev_WARN macro.
Signed-off-by: Gal Pressman <g...@mellanox.com>
Signed-off-by: Saeed Mahameed <sae...@mellanox.com>
---
include/linux/netdevice.h | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 30f0f2928808..79518ede3170 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -4336,6 +4336,31 @@ void netdev_notice(const struct net_device *dev, const
char *format, ...);
__printf(2, 3)
void netdev_info(const struct net_device *dev, const char *format, ...);
+#define netdev_level_once(level, dev, fmt, ...) \
+do { \
+ static bool __print_once __read_mostly; \
+ \
+ if (!__print_once) { \
+ __print_once = true; \
+ netdev_printk(level, dev, fmt, ##__VA_ARGS__); \
+ } \
+} while (0)
+
+#define netdev_emerg_once(dev, fmt, ...) \
+ netdev_level_once(KERN_EMERG, dev, fmt, ##__VA_ARGS__)
+#define netdev_alert_once(dev, fmt, ...) \
+ netdev_level_once(KERN_ALERT, dev, fmt, ##__VA_ARGS__)
+#define netdev_crit_once(dev, fmt, ...) \
+ netdev_level_once(KERN_CRIT, dev, fmt, ##__VA_ARGS__)
+#define netdev_err_once(dev, fmt, ...) \
+ netdev_level_once(KERN_ERR, dev, fmt, ##__VA_ARGS__)
+#define netdev_warn_once(dev, fmt, ...) \
+ netdev_level_once(KERN_WARNING, dev, fmt, ##__VA_ARGS__)
+#define netdev_notice_once(dev, fmt, ...) \
+ netdev_level_once(KERN_NOTICE, dev, fmt, ##__VA_ARGS__)
+#define netdev_info_once(dev, fmt, ...) \
+ netdev_level_once(KERN_INFO, dev, fmt, ##__VA_ARGS__)
+
#define MODULE_ALIAS_NETDEV(device) \
MODULE_ALIAS("netdev-" device)
@@ -4376,6 +4401,10 @@ do {
\
WARN(1, "netdevice: %s%s\n" format, netdev_name(dev), \
netdev_reg_state(dev), ##args)
+#define netdev_WARN_ONCE(dev, condition, format, arg...) \
+ WARN_ONCE(1, "netdevice: %s%s\n" format, netdev_name(dev) \
+ netdev_reg_state(dev), ##args)
+
/* netif printk helpers, similar to netdev_printk */
#define netif_printk(priv, type, level, dev, fmt, args...) \
--
2.13.6
