* fix doxygen warnings

src/cmsg.h

@@ -22,7 +22,7 @@ typedef struct f2b_cmsg_t {
   uint8_t flags;   /**< CMSG_FLAG_* */
   uint16_t size;   /**< payload length */
   /* 8 bytes */
-  char pass[8];
+  char pass[8];    /**< auth data */
   /* 16 bytes */
   /* end of header */
   char data[DATA_LEN_MAX];      /**< set of "\n"-terminated strings */

src/jail.h

@@ -14,6 +14,7 @@
 #include "filter.h"
 #include "backend.h"
 
+/** jail metadata struct */
 typedef struct f2b_jail_t {
   struct f2b_jail_t *next;   /**< pointer to next jail */
   bool enabled;              /**< option: is jail enabled */

src/matches.h

@@ -7,6 +7,7 @@
 #ifndef F2B_MATCHES_H_
 #define F2B_MATCHES_H_
 
+/** matches container */
 typedef struct {
   size_t hits;   /**< how many times this ip matched by filter */
   size_t max;    /**< max matches that this in struct can contain */