Add support for the Google xxhash checksumming function

[fio.git] / verify.c

diff --git a/verify.c b/verify.c
index 93731228f1b68661e0edd3293bc491ccb650774d..9eb532a28e080a66a2483943f09fed16efd9ecfa 100644 (file)
--- a/verify.c
+++ b/verify.c
@@ -23,6 +23,7 @@
 #include "crc/sha256.h"
 #include "crc/sha512.h"
 #include "crc/sha1.h"
+#include "crc/xxhash.h"
 
 static void populate_hdr(struct thread_data *td, struct io_u *io_u,
                         struct verify_header *hdr, unsigned int header_num,
@@ -172,6 +173,9 @@ static inline unsigned int __hdr_size(int verify_type)
        case VERIFY_SHA512:
                len = sizeof(struct vhdr_sha512);
                break;
+       case VERIFY_XXHASH:
+               len = sizeof(struct vhdr_xxhash);
+               break;
        case VERIFY_META:
                len = sizeof(struct vhdr_meta);
                break;
@@ -404,6 +408,30 @@ static int verify_io_u_meta(struct verify_header *hdr, struct vcont *vc)
        return ret;
 }
 
+static int verify_io_u_xxhash(struct verify_header *hdr, struct vcont *vc)
+{
+       void *p = io_u_verify_off(hdr, vc);
+       struct vhdr_xxhash *vh = hdr_priv(hdr);
+       uint32_t hash;
+       void *state;
+
+       dprint(FD_VERIFY, "xxhash verify io_u %p, len %u\n", vc->io_u, hdr->len);
+
+       state = XXH32_init(1);
+       XXH32_update(state, p, hdr->len - hdr_size(hdr));
+       hash = XXH32_digest(state);
+
+       if (vh->hash == hash)
+               return 0;
+
+       vc->name = "xxhash";
+       vc->good_crc = &vh->hash;
+       vc->bad_crc = &hash;
+       vc->crc_len = sizeof(hash);
+       log_verify_failure(hdr, vc);
+       return EILSEQ;
+}
+
 static int verify_io_u_sha512(struct verify_header *hdr, struct vcont *vc)
 {
        void *p = io_u_verify_off(hdr, vc);
@@ -793,6 +821,9 @@ int verify_io_u(struct thread_data *td, struct io_u *io_u)
                case VERIFY_SHA512:
                        ret = verify_io_u_sha512(hdr, &vc);
                        break;
+               case VERIFY_XXHASH:
+                       ret = verify_io_u_xxhash(hdr, &vc);
+                       break;
                case VERIFY_META:
                        ret = verify_io_u_meta(hdr, &vc);
                        break;
@@ -834,6 +865,16 @@ static void fill_meta(struct verify_header *hdr, struct thread_data *td,
        vh->offset = io_u->offset + header_num * td->o.verify_interval;
 }
 
+static void fill_xxhash(struct verify_header *hdr, void *p, unsigned int len)
+{
+       struct vhdr_xxhash *vh = hdr_priv(hdr);
+       void *state;
+
+       state = XXH32_init(1);
+       XXH32_update(state, p, len);
+       vh->hash = XXH32_digest(state);
+}
+
 static void fill_sha512(struct verify_header *hdr, void *p, unsigned int len)
 {
        struct vhdr_sha512 *vh = hdr_priv(hdr);
@@ -973,6 +1014,11 @@ static void populate_hdr(struct thread_data *td, struct io_u *io_u,
                                                io_u, hdr->len);
                fill_sha512(hdr, data, data_len);
                break;
+       case VERIFY_XXHASH:
+               dprint(FD_VERIFY, "fill xxhash io_u %p, len %u\n",
+                                               io_u, hdr->len);
+               fill_xxhash(hdr, data, data_len);
+               break;
        case VERIFY_META:
                dprint(FD_VERIFY, "fill meta io_u %p, len %u\n",
                                                io_u, hdr->len);