From 4d7ad4a6cc08e316d78de5ac7ce3ead4e9bfcb66 Mon Sep 17 00:00:00 2001
From: Damjan Marion <damarion@cisco.com>
Date: Fri, 23 Oct 2020 21:52:50 +0200
Subject: vlib: add VLIB_REGISTER_LOG_CLASS macro

Type: improvement
Change-Id: Iafcaeb88fa3569e042fb9cb270cf062b145416e2
Signed-off-by: Damjan Marion <damarion@cisco.com>
---
 src/vlib/log.h | 55 +++++++++++++++++++++++++++++++++++++++++--------------
 1 file changed, 41 insertions(+), 14 deletions(-)

(limited to 'src/vlib/log.h')

diff --git a/src/vlib/log.h b/src/vlib/log.h
index 4cceb4b962a..75bdceb806e 100644
--- a/src/vlib/log.h
+++ b/src/vlib/log.h
@@ -18,22 +18,24 @@
 
 #include <vppinfra/types.h>
 
-#define foreach_vlib_log_level \
-  _(0, EMERG, emerg) \
-  _(1, ALERT, alert) \
-  _(2, CRIT, crit) \
-  _(3, ERR, error) \
-  _(4, WARNING, warn) \
-  _(5, NOTICE, notice) \
-  _(6, INFO, info) \
-  _(7, DEBUG, debug) \
-  _(8, DISABLED, disabled)
+#define foreach_vlib_log_level	\
+  _(EMERG, emerg)		\
+  _(ALERT, alert)		\
+  _(CRIT, crit)			\
+  _(ERR, error)			\
+  _(WARNING, warn)		\
+  _(NOTICE, notice)		\
+  _(INFO, info)			\
+  _(DEBUG, debug)		\
+  _(DISABLED, disabled)
 
 typedef enum
 {
-#define _(n,uc,lc) VLIB_LOG_LEVEL_##uc = n,
+  VLIB_LOG_LEVEL_UNKNOWN = 0,
+#define _(uc,lc) VLIB_LOG_LEVEL_##uc,
   foreach_vlib_log_level
 #undef _
+    VLIB_LOG_N_LEVELS,
 } vlib_log_level_t;
 
 typedef struct
@@ -74,15 +76,25 @@ typedef struct
   char *name;
 } vlib_log_class_config_t;
 
+
+typedef struct vlib_log_registration
+{
+  char *class_name;
+  char *subclass_name;
+  vlib_log_class_t class;
+  vlib_log_level_t default_level;
+  vlib_log_level_t default_syslog_level;
+
+  /* next */
+  struct vlib_log_registration *next;
+} vlib_log_class_registration_t;
+
 typedef struct
 {
   vlib_log_entry_t *entries;
   vlib_log_class_data_t *classes;
   int size, next, count;
 
-  /* our own log class */
-  vlib_log_class_t log_class;
-
   int default_rate_limit;
   int default_log_level;
   int default_syslog_log_level;
@@ -96,6 +108,9 @@ typedef struct
   /* config */
   vlib_log_class_config_t *configs;
   uword *config_index_by_name;
+
+  /* registrations */
+  vlib_log_class_registration_t *registrations;
 } vlib_log_main_t;
 
 extern vlib_log_main_t log_main;
@@ -119,6 +134,18 @@ u8 *format_vlib_log_level (u8 * s, va_list * args);
 #define vlib_log_info(...) vlib_log(VLIB_LOG_LEVEL_INFO, __VA_ARGS__)
 #define vlib_log_debug(...) vlib_log(VLIB_LOG_LEVEL_DEBUG, __VA_ARGS__)
 
+#define VLIB_REGISTER_LOG_CLASS(x,...) \
+__VA_ARGS__ vlib_log_class_registration_t x; \
+static void __clib_constructor			\
+__vlib_add_log_registration_##x (void)		\
+  {						\
+    vlib_log_main_t * lm = &log_main;		\
+    x.next = lm->registrations;			\
+    x.class = ~0;				\
+    lm->registrations = &x;			\
+  }						\
+__VA_ARGS__  vlib_log_class_registration_t x
+
 #endif /* included_vlib_log_h */
 
 /*
-- 
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