detect/frame: set frame flag during init

Allows for quickly checking if sig operates on frames during parsing.

src/detect-frame.c

@@ -144,6 +144,7 @@ static int DetectFrameSetup(DetectEngineCtx *de_ctx, Signature *s, const char *s
         return -1;
 
     FrameConfigEnable(keyword_alproto, frame_type);
+    s->init_data->init_flags |= SIG_FLAG_INIT_FRAME;
     return 0;
 }
 

src/detect.h

@@ -292,6 +292,7 @@ typedef struct DetectPort_ {
 #define SIG_FLAG_INIT_BIDIREC               BIT_U32(3)  /**< signature has bidirectional operator */
 #define SIG_FLAG_INIT_FIRST_IPPROTO_SEEN                                                           \
     BIT_U32(4) /** < signature has seen the first ip_proto keyword */
+#define SIG_FLAG_INIT_FRAME BIT_U32(5)                  /**< signature uses frames */
 #define SIG_FLAG_INIT_STATE_MATCH           BIT_U32(6)  /**< signature has matches that require stateful inspection */
 #define SIG_FLAG_INIT_NEED_FLUSH            BIT_U32(7)
 #define SIG_FLAG_INIT_PRIO_EXPLICIT                                                                \