From c82ecf553aff58493656b429c5884739f11c2ad9 Mon Sep 17 00:00:00 2001
From: Victor Julien <victor@inliniac.net>
Date: Thu, 19 Sep 2013 12:01:20 +0200
Subject: [PATCH] Tag: document in the code that 'tag' is compatible with ip
 only

---
 src/detect-tag.c | 1 +
 src/detect.c     | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/src/detect-tag.c b/src/detect-tag.c
index 9d7d8590b8..c53766de3e 100644
--- a/src/detect-tag.c
+++ b/src/detect-tag.c
@@ -71,6 +71,7 @@ void DetectTagRegister (void) {
     sigmatch_table[DETECT_TAG].Setup = DetectTagSetup;
     sigmatch_table[DETECT_TAG].Free  = DetectTagDataFree;
     sigmatch_table[DETECT_TAG].RegisterTests = DetectTagRegisterTests;
+    sigmatch_table[DETECT_TAG].flags |= SIGMATCH_IPONLY_COMPAT;
 
     const char *eb;
     int eo;
diff --git a/src/detect.c b/src/detect.c
index d40e97416c..8612e52cd5 100644
--- a/src/detect.c
+++ b/src/detect.c
@@ -1888,6 +1888,9 @@ int SignatureIsIPOnly(DetectEngineCtx *de_ctx, Signature *s) {
     if (s->sm_lists[DETECT_SM_LIST_AMATCH] != NULL)
         return 0;
 
+    /* TMATCH list can be ignored, it contains TAGs and
+     * tags are compatible to IP-only. */
+
     IPOnlyCIDRItem *cidr_item;
     cidr_item = s->CidrSrc;
     while (cidr_item != NULL) {
-- 
2.47.2