lib: make yang_dnode_get_entry() more flexible

[mirror_frr.git] / lib / hook.c

diff --git a/lib/hook.c b/lib/hook.c
index 04d803cd8dd995cf4a4046362599524d26365ab3..4fe305f282681009ec462869e75968e6af31fd47 100644 (file)
--- a/lib/hook.c
+++ b/lib/hook.c
@@ -20,37 +20,45 @@
  * DEALINGS IN THE SOFTWARE.
  */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include "memory.h"
 #include "hook.h"
 
 DEFINE_MTYPE_STATIC(LIB, HOOK_ENTRY, "Hook entry")
 
 void _hook_register(struct hook *hook, void *funcptr, void *arg, bool has_arg,
-                   struct frrmod_runtime *module, const char *funcname)
+                   struct frrmod_runtime *module, const char *funcname,
+                   int priority)
 {
-       struct hookent *he = XCALLOC(MTYPE_HOOK_ENTRY, sizeof(*he));
+       struct hookent *he = XCALLOC(MTYPE_HOOK_ENTRY, sizeof(*he)), **pos;
        he->hookfn = funcptr;
        he->hookarg = arg;
        he->has_arg = has_arg;
        he->module = module;
        he->fnname = funcname;
+       he->priority = priority;
+
+       for (pos = &hook->entries; *pos; pos = &(*pos)->next)
+               if (hook->reverse ? (*pos)->priority < priority
+                                 : (*pos)->priority >= priority)
+                       break;
 
-       he->next = hook->entries;
-       hook->entries = he;
+       he->next = *pos;
+       *pos = he;
 }
 
-void _hook_unregister(struct hook *hook, void *funcptr,
-                     void *arg, bool has_arg)
+void _hook_unregister(struct hook *hook, void *funcptr, void *arg, bool has_arg)
 {
        struct hookent *he, **prev;
 
        for (prev = &hook->entries; (he = *prev) != NULL; prev = &he->next)
                if (he->hookfn == funcptr && he->hookarg == arg
-                               && he->has_arg == has_arg)
-               {
+                   && he->has_arg == has_arg) {
                        *prev = he->next;
                        XFREE(MTYPE_HOOK_ENTRY, he);
                        break;
                }
 }
-