From ec2c6ad0658638552ca547a695953609f3b7bd9c Mon Sep 17 00:00:00 2001
From: Daniel Borkmann <dborkman@redhat.com>
Date: Mon, 29 Apr 2013 22:45:53 +0200
Subject: dissector: show sw/hw timestamp source

Now, with PF_PACKET's extension, we can see what kind of sw/hw
timestamp is being reported to us [1]. Thus, report it in the
dissector.

  [1] http://thread.gmane.org/gmane.linux.network/266878/

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
---
 built_in.h  | 12 ++++++++++++
 dissector.h | 18 ++++++++++++++++--
 2 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/built_in.h b/built_in.h
index ee97c74..72618a0 100644
--- a/built_in.h
+++ b/built_in.h
@@ -341,4 +341,16 @@ static inline u64 cpu_to_le64(u64 val)
 # define CO_IN_CACHE_SHIFT		5
 #endif
 
+#ifndef TP_STATUS_TS_SOFTWARE
+# define TP_STATUS_TS_SOFTWARE		(1 << 29)
+#endif
+
+#ifndef TP_STATUS_TS_SYS_HARDWARE
+# define TP_STATUS_TS_SYS_HARDWARE	(1 << 30)
+#endif
+
+#ifndef TP_STATUS_TS_RAW_HARDWARE
+# define TP_STATUS_TS_RAW_HARDWARE	(1 << 31)
+#endif
+
 #endif /* BUILT_IN_H */
diff --git a/dissector.h b/dissector.h
index fc2cd5a..d211e06 100644
--- a/dissector.h
+++ b/dissector.h
@@ -13,6 +13,7 @@
 #include "ring.h"
 #include "tprintf.h"
 #include "pcap_io.h"
+#include "built_in.h"
 
 #define PRINT_NORM		0
 #define PRINT_LESS		1
@@ -32,6 +33,18 @@ static const char * const packet_types[256]={
 
 extern char *if_indextoname(unsigned ifindex, char *ifname);
 
+static inline const char *__show_ts_source(uint32_t status)
+{
+	if (status & TP_STATUS_TS_RAW_HARDWARE)
+		return "(raw hw ts)";
+	else if (status & TP_STATUS_TS_SYS_HARDWARE)
+		return "(sys hw ts)";
+	else if (status & TP_STATUS_TS_SOFTWARE)
+		return "(sw ts)";
+	else
+		return "";
+}
+
 static inline void show_frame_hdr(struct frame_map *hdr, int mode)
 {
 	char tmp[IFNAMSIZ];
@@ -47,11 +60,12 @@ static inline void show_frame_hdr(struct frame_map *hdr, int mode)
 			hdr->tp_h.tp_len);
 		break;
 	default:
-		tprintf("%s %s %u %us.%uns\n",
+		tprintf("%s %s %u %us.%uns %s\n",
 			packet_types[hdr->s_ll.sll_pkttype] ? : "?",
 			if_indextoname(hdr->s_ll.sll_ifindex, tmp) ? : "?",
 			hdr->tp_h.tp_len, hdr->tp_h.tp_sec,
-			hdr->tp_h.tp_nsec);
+			hdr->tp_h.tp_nsec,
+			__show_ts_source(hdr->tp_h.tp_status));
 		break;
 	}
 }
-- 
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