Add support for PPI (the Per-Packet Information header), described at

http://www.cacetech.com/documents/PPI_Header_format_1.0.pdf .

svn path=/trunk/; revision=22094

epan/dissectors/Makefile.common

@@ -572,6 +572,7 @@ CLEAN_DISSECTOR_SRC = \
 	packet-pop.c		\
 	packet-portmap.c	\
 	packet-pgsql.c		\
+	packet-ppi.c		\
 	packet-ppp.c		\
 	packet-pppoe.c		\
 	packet-pptp.c		\

epan/dissectors/packet-frame.c

@@ -79,7 +79,7 @@ static const value_string p2p_dirs[] = {
 	{ 0, NULL }
 };
 
-static dissector_table_t wtap_encap_dissector_table;
+dissector_table_t wtap_encap_dissector_table;
 
 static GSList *frame_end_routines = NULL;
 

epan/dissectors/packet-frame.h

@@ -36,7 +36,7 @@ void show_exception(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
 void
 show_reported_bounds_error(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
 
-/* 
+/*
  * Routine used to register frame end routine.  The routine should only
  * be registred when the dissector is used in the frame, not in the
  * proto_register_XXX function.
@@ -50,8 +50,13 @@ register_frame_end_routine(void (*func)(void));
  */
 extern int proto_malformed;
 
-/* following variables are exported from libwireshark.dll. 
+/*
- * Thus we need a special declaration. 
+ * The frame dissector and the PPI dissector both use this
+ */
+extern dissector_table_t wtap_encap_dissector_table;
+
+/* following variables are exported from libwireshark.dll.
+ * Thus we need a special declaration.
  */
 WS_VAR_IMPORT int proto_frame;
 WS_VAR_IMPORT int hf_frame_arrival_time;

wiretap/libpcap.c

@@ -310,7 +310,7 @@ static const struct {
 
 	/*
 	 * Linux "cooked mode" captures, used by the current CVS version
-	 * of libpcap 
+	 * of libpcap
          * OR
          * it could be a packet in Cisco's ERSPAN encapsulation which uses
          * this number as well (why can't people stick to protocols when it
@@ -427,6 +427,8 @@ static const struct {
 	{ 188,		WTAP_ENCAP_IEEE802_16_MAC_CPS },
 	/* USB packets with Linux-specified header */
 	{ 189, 		WTAP_ENCAP_USB_LINUX },
+        /* Per-Packet Information header */
+        { 192,          WTAP_ENCAP_PPI },
 
 	/*
 	 * To repeat:

wiretap/wtap.c

@@ -350,7 +350,7 @@ static struct encap_type_info encap_table_base[] = {
 
 	/* WTAP_ENCAP_JUNIPER_CHDLC */
 	{ "Juniper C-HDLC", "juniper-chdlc" },
-    
+
 	/* WTAP_ENCAP_JUNIPER_GGSN */
 	{ "Juniper GGSN", "juniper-ggsn" },
 
@@ -377,6 +377,9 @@ static struct encap_type_info encap_table_base[] = {
 
 	/* WTAP_ENCAP_MPEG */
 	{ "MPEG", "mpeg" },
+
+	/* WTAP_ENCAP_PPI */
+	{ "Per-Packet Information header", "ppi" },
 };
 
 gint wtap_num_encap_types = sizeof(encap_table_base) / sizeof(struct encap_type_info);
@@ -384,13 +387,13 @@ static GArray* encap_table_arr = NULL;
 static const struct encap_type_info* encap_table = NULL;
 
 static void wtap_init_encap_types(void) {
-	
+
 	if (encap_table_arr) return;
-	
+
 	encap_table_arr = g_array_new(FALSE,TRUE,sizeof(struct encap_type_info));
-	
+
 	g_array_append_vals(encap_table_arr,encap_table_base,wtap_num_encap_types);
-	
+
 	encap_table = (void*)encap_table_arr->data;
 }
 
@@ -403,10 +406,10 @@ int wtap_get_num_encap_types(void) {
 int wtap_register_encap_type(char* name, char* short_name) {
 	struct encap_type_info* e = g_malloc(sizeof(struct encap_type_info));
 	wtap_init_encap_types();
-	
+
 	e->name = g_strdup(name);
 	e->short_name = g_strdup(short_name);
-	
+
 	g_array_append_val(encap_table_arr,e);
 
 	encap_table = (void*)encap_table_arr->data;

wiretap/wtap.h

@@ -191,6 +191,7 @@ extern "C" {
 #define WTAP_ENCAP_NETTL_RAW_TELNET		94
 #define WTAP_ENCAP_USB_LINUX                    95
 #define WTAP_ENCAP_MPEG                         96
+#define WTAP_ENCAP_PPI                          97
 
 #define WTAP_NUM_ENCAP_TYPES			wtap_get_num_encap_types()
 
@@ -516,7 +517,7 @@ typedef union {
 		guint16 vc;
 		guint16 cid;
 	} atm;
-	
+
 	guint32 ds0mask;
 } k12_input_info_t;
 
@@ -571,7 +572,7 @@ struct catapult_dct2000_phdr
 #define URB_TRANSFER_IN   0x80		/* to host */
 
 /*
- * USB setup header as defined in USB specification 
+ * USB setup header as defined in USB specification
  */
 struct usb_request_hdr {
     gint8 bmRequestType;
@@ -604,7 +605,7 @@ struct linux_usb_phdr {
     guint32 urb_len;        /* whole len of urb this event refers to */
     guint32 data_len;       /* amount of urb data really present in this event*/
 };
-    
+
 union wtap_pseudo_header {
 	struct eth_phdr		eth;
 	struct x25_phdr		x25;
@@ -646,26 +647,26 @@ struct file_type_info {
     /* the file type name */
     /* should be NULL for all "pseudo" types that are only internally used and not read/writeable */
 	const char *name;
-	
+
     /* the file type short name, used as a shortcut for the command line tools */
     /* should be NULL for all "pseudo" types that are are only internally used and not read/writeable */
 	const char *short_name;
-    
+
     /* the common file extensions for this type (seperated by semicolon) */
     /* should be *.* if no common extension is applicable */
     const char *file_extensions;
-    
+
     /* the default file extension, used to save this type */
     /* should be NULL if no default extension is known */
     const char *file_extension_default;
-    
+
     /* can this type be compressed with gzip? */
 	gboolean	can_compress;
-    
+
     /* can this type write this encapsulation format? */
     /* should be NULL is this file type don't have write support */
 	int	(*can_write_encap)(int);
-    
+
     /* the function to open the capture file for writing */
     /* should be NULL is this file type don't have write support */
 	int	(*dump_open)(wtap_dumper *, gboolean, int *);