Abstract out the data offset calculation
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/verify.c b/verify.c
index 41c2f77..3606ece 100644
--- a/verify.c
+++ b/verify.c
@@ -50,10 +50,20 @@
log_info("\n");
}
+/*
+ * Return data area 'header_num'
+ */
+static inline void *io_u_verify_off(struct verify_header *hdr,
+ struct io_u *io_u,
+ unsigned char header_num)
+{
+ return io_u->buf + sizeof(*hdr) + header_num * hdr->len;
+}
+
static int verify_io_u_crc7(struct verify_header *hdr, struct io_u *io_u,
unsigned char header_num)
{
- void *p = io_u->buf + header_num * hdr->len + sizeof(*hdr);
+ void *p = io_u_verify_off(hdr, io_u, header_num);
unsigned char c;
c = crc7(p, hdr->len - sizeof(*hdr));
@@ -72,7 +82,7 @@
static int verify_io_u_crc16(struct verify_header *hdr, struct io_u *io_u,
unsigned int header_num)
{
- void *p = io_u->buf + header_num * hdr->len + sizeof(*hdr);
+ void *p = io_u_verify_off(hdr, io_u, header_num);
unsigned short c;
c = crc16(p, hdr->len - sizeof(*hdr));
@@ -91,7 +101,7 @@
static int verify_io_u_crc64(struct verify_header *hdr, struct io_u *io_u,
unsigned int header_num)
{
- void *p = io_u->buf + header_num * hdr->len + sizeof(*hdr);
+ void *p = io_u_verify_off(hdr, io_u, header_num);
unsigned long long c;
c = crc64(p, hdr->len - sizeof(*hdr));
@@ -110,7 +120,7 @@
static int verify_io_u_crc32(struct verify_header *hdr, struct io_u *io_u,
unsigned int header_num)
{
- void *p = io_u->buf + header_num * hdr->len + sizeof(*hdr);
+ void *p = io_u_verify_off(hdr, io_u, header_num);
unsigned long c;
c = crc32(p, hdr->len - sizeof(*hdr));
@@ -129,7 +139,7 @@
static int verify_io_u_md5(struct verify_header *hdr, struct io_u *io_u,
unsigned int header_num)
{
- void *p = io_u->buf + header_num * hdr->len + sizeof(*hdr);
+ void *p = io_u_verify_off(hdr, io_u, header_num);
uint32_t hash[MD5_HASH_WORDS];
struct md5_ctx md5_ctx = {
.hash = hash,