Also support protocol version 8 in conjunction with protocol version 7.

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
---
 blktrace.h | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/blktrace.h b/blktrace.h
index 74dfb48..3305fa0 100644
--- a/blktrace.h
+++ b/blktrace.h
@@ -69,6 +69,7 @@ extern struct timespec abs_start_time;
 
 #define CHECK_MAGIC(t)		(((t)->magic & 0xffffff00) == BLK_IO_TRACE_MAGIC)
 #define SUPPORTED_VERSION	(0x07)
+#define SUPPORTED_VERSION2	(0x08)
 
 #if __BYTE_ORDER == __LITTLE_ENDIAN
 #define be16_to_cpu(x)		__bswap_16(x)
@@ -90,13 +91,17 @@ extern struct timespec abs_start_time;
 
 static inline int verify_trace(struct blk_io_trace *t)
 {
+	u8 version;
+
 	if (!CHECK_MAGIC(t)) {
 		fprintf(stderr, "bad trace magic %x\n", t->magic);
 		return 1;
 	}
-	if ((t->magic & 0xff) != SUPPORTED_VERSION) {
-		fprintf(stderr, "unsupported trace version %x\n", 
-			t->magic & 0xff);
+
+	version = t->magic & 0xff;
+	if (version != SUPPORTED_VERSION &&
+	    version != SUPPORTED_VERSION2) {
+		fprintf(stderr, "unsupported trace version %x\n", version);
 		return 1;
 	}
 
-- 
2.51.0