[PATCH blktrace v2 11/22] blkparse: make get_pdulen() take the pdu_len

[Johannes Thumshirn]

Directly pass in the pdu_len into get_pdulen() and only care about the
byte swapping in get_pdulen().

This enables us to use the function for different versions of the
protocol.

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@xxxxxxx>
---
 blkparse.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/blkparse.c b/blkparse.c
index 163da73..0402e81 100644
--- a/blkparse.c
+++ b/blkparse.c
@@ -2412,12 +2412,12 @@ static int read_data(int fd, void *buffer, int bytes, int block, int *fdblock)
 	return 0;
 }
 
-static inline __u16 get_pdulen(struct blk_io_trace *bit)
+static inline __u16 get_pdulen(__u16 pdu_len)
 {
 	if (data_is_native)
-		return bit->pdu_len;
+		return pdu_len;
 
-	return __bswap_16(bit->pdu_len);
+	return __bswap_16(pdu_len);
 }
 
 static inline __u32 get_magic(__u32 magic)
@@ -2439,7 +2439,7 @@ static int read_one_bit(int fd, struct blk_io_trace *bit, int block,
 	if (ret)
 		return ret;
 
-	pdu_len = get_pdulen(bit);
+	pdu_len = get_pdulen(bit->pdu_len);
 	if (pdu_len) {
 		void *ptr = realloc(bit, sizeof(*bit) + pdu_len);
 
-- 
2.51.0