[AX25]: UID fixes

[karo-tx-linux.git] / include / net / ax25.h

diff --git a/include/net/ax25.h b/include/net/ax25.h
index 828a3a93dda10e07ce851476894296f5b7e4a68f..3696f988a9f109710f8f947880eda11283fe449d 100644 (file)
--- a/include/net/ax25.h
+++ b/include/net/ax25.h
@@ -139,11 +139,25 @@ enum {
 #define AX25_DEF_DS_TIMEOUT    (3 * 60 * HZ)           /* DAMA timeout 3 minutes */
 
 typedef struct ax25_uid_assoc {
-       struct ax25_uid_assoc   *next;
+       struct hlist_node       uid_node;
+       atomic_t                refcount;
        uid_t                   uid;
        ax25_address            call;
 } ax25_uid_assoc;
 
+#define ax25_uid_for_each(__ax25, node, list) \
+       hlist_for_each_entry(__ax25, node, list, uid_node)
+
+#define ax25_uid_hold(ax25) \
+       atomic_inc(&((ax25)->refcount))
+
+static inline void ax25_uid_put(ax25_uid_assoc *assoc)
+{
+       if (atomic_dec_and_test(&assoc->refcount)) {
+               kfree(assoc);
+       }
+}
+
 typedef struct {
        ax25_address            calls[AX25_MAX_DIGIS];
        unsigned char           repeated[AX25_MAX_DIGIS];
@@ -376,7 +390,7 @@ extern unsigned long ax25_display_timer(struct timer_list *);
 
 /* ax25_uid.c */
 extern int  ax25_uid_policy;
-extern ax25_address *ax25_findbyuid(uid_t);
+extern ax25_uid_assoc *ax25_findbyuid(uid_t);
 extern int  ax25_uid_ioctl(int, struct sockaddr_ax25 *);
 extern struct file_operations ax25_uid_fops;
 extern void ax25_uid_free(void);