Added a private hash table to transport string values between dissectors.

This works between C and Lua.

In C the pinfo.private_table pointer must be initialized using
g_hash_table_new (g_str_hash, g_str_equal);

In Lua the values are available using pinfo.private.<key>, and the
table is created automatically on first usage.  It's possible to use
this datatypes: nil, boolean, number and string, but every value
is converted to string so numbers must be converted using tonumber()
on usage.  Boolean is either nil or an empty string.

svn path=/trunk/; revision=39461

1 files changed, 1 insertions, 0 deletions

diff --git a/epan/packet_info.h b/epan/packet_info.h
index 646a24a7be..94ee3c1b42 100644
--- a/epan/packet_info.h
+++ b/epan/packet_info.h
@@ -175,6 +175,7 @@ typedef struct _packet_info {
                                       * in the SCTP packet
                                       */
   void    *private_data;	/* pointer to data passed from one dissector to another */
+  GHashTable *private_table;	/* a hash table passed from one dissector to another */
   /* TODO: Use emem_strbuf_t instead */
   GString *layer_names; 	/* layers of each protocol */
   guint16 link_number;