Add crc32c checksum
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/verify.c b/verify.c
index 680e491..afb4cb7 100644
--- a/verify.c
+++ b/verify.c
@@ -11,6 +11,7 @@
#include "crc/md5.h"
#include "crc/crc64.h"
#include "crc/crc32.h"
+#include "crc/crc32c.h"
#include "crc/crc16.h"
#include "crc/crc7.h"
#include "crc/sha256.h"
@@ -125,6 +126,7 @@
case VERIFY_CRC64:
len = sizeof(struct vhdr_crc64);
break;
+ case VERIFY_CRC32C:
case VERIFY_CRC32:
len = sizeof(struct vhdr_crc32);
break;
@@ -326,6 +328,27 @@
return 0;
}
+static int verify_io_u_crc32c(struct verify_header *hdr, struct io_u *io_u,
+ unsigned int header_num)
+{
+ void *p = io_u_verify_off(hdr, io_u, header_num);
+ struct vhdr_crc32 *vh = hdr_priv(hdr);
+ uint32_t c;
+
+ dprint(FD_VERIFY, "crc32c verify io_u %p, len %u\n", io_u, hdr->len);
+
+ c = crc32c(p, hdr->len - hdr_size(hdr));
+
+ if (c != vh->crc32) {
+ log_err("crc32c: verify failed at %llu/%u\n",
+ io_u->offset + header_num * hdr->len, hdr->len);
+ log_err("crc32c: wanted %x, got %x\n", vh->crc32, c);
+ return EIO;
+ }
+
+ return 0;
+}
+
static int verify_io_u_md5(struct verify_header *hdr, struct io_u *io_u,
unsigned int header_num)
{
@@ -442,6 +465,9 @@
case VERIFY_CRC64:
ret = verify_io_u_crc64(hdr, io_u, hdr_num);
break;
+ case VERIFY_CRC32C:
+ ret = verify_io_u_crc32c(hdr, io_u, hdr_num);
+ break;
case VERIFY_CRC32:
ret = verify_io_u_crc32(hdr, io_u, hdr_num);
break;
@@ -527,6 +553,13 @@
vh->crc32 = crc32(p, len);
}
+static void fill_crc32c(struct verify_header *hdr, void *p, unsigned int len)
+{
+ struct vhdr_crc32 *vh = hdr_priv(hdr);
+
+ vh->crc32 = crc32c(p, len);
+}
+
static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
{
struct vhdr_crc64 *vh = hdr_priv(hdr);
@@ -584,6 +617,11 @@
io_u, hdr->len);
fill_crc64(hdr, data, data_len);
break;
+ case VERIFY_CRC32C:
+ dprint(FD_VERIFY, "fill crc32c io_u %p, len %u\n",
+ io_u, hdr->len);
+ fill_crc32c(hdr, data, data_len);
+ break;
case VERIFY_CRC32:
dprint(FD_VERIFY, "fill crc32 io_u %p, len %u\n",
io_u, hdr->len);