From: Jens Axboe <axboe@kernel.dk>
Date: Wed, 22 Feb 2012 19:29:42 +0000 (+0100)
Subject: Use crc32c for the verify_header checksum
X-Git-Tag: fio-2.0.4~8
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=a3e87103daa6b8eb274dce8409ebc87fe3a3595d

Use crc32c for the verify_header checksum

It's the only hardware assisted crypto we have, and it's
widely available in any recent Intel CPU.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/verify.c b/verify.c
index d6abb983..f40d7e11 100644
--- a/verify.c
+++ b/verify.c
@@ -651,7 +651,7 @@ static int verify_hdr_crc(struct verify_header *hdr)
 	void *p = hdr;
 	uint32_t crc;
 
-	crc = crc32(p, sizeof(*hdr) - sizeof(hdr->crc32));
+	crc = crc32c(p, sizeof(*hdr) - sizeof(hdr->crc32));
 	if (crc == hdr->crc32)
 		return 1;
 
@@ -866,7 +866,7 @@ static void populate_hdr(struct thread_data *td, struct io_u *io_u,
 	hdr->pad1 = 0;
 	hdr->rand_seed = io_u->rand_seed;
 	hdr->pad2 = 0;
-	hdr->crc32 = crc32(p, sizeof(*hdr) - sizeof(hdr->crc32));
+	hdr->crc32 = crc32c(p, sizeof(*hdr) - sizeof(hdr->crc32));
 
 	data_len = header_len - hdr_size(hdr);