diff options
Diffstat (limited to 'sys/cddl/boot/zfs/fletcher.c')
| -rw-r--r-- | sys/cddl/boot/zfs/fletcher.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/sys/cddl/boot/zfs/fletcher.c b/sys/cddl/boot/zfs/fletcher.c index 2b9728d..3c60036 100644 --- a/sys/cddl/boot/zfs/fletcher.c +++ b/sys/cddl/boot/zfs/fletcher.c @@ -43,6 +43,23 @@ fletcher_2_native(const void *buf, uint64_t size, zio_cksum_t *zcp) } static void +fletcher_2_byteswap(const void *buf, uint64_t size, zio_cksum_t *zcp) +{ + const uint64_t *ip = buf; + const uint64_t *ipend = ip + (size / sizeof (uint64_t)); + uint64_t a0, b0, a1, b1; + + for (a0 = b0 = a1 = b1 = 0; ip < ipend; ip += 2) { + a0 += BSWAP_64(ip[0]); + a1 += BSWAP_64(ip[1]); + b0 += a0; + b1 += a1; + } + + ZIO_SET_CHECKSUM(zcp, a0, a1, b0, b1); +} + +static void fletcher_4_native(const void *buf, uint64_t size, zio_cksum_t *zcp) { const uint32_t *ip = buf; @@ -58,3 +75,20 @@ fletcher_4_native(const void *buf, uint64_t size, zio_cksum_t *zcp) ZIO_SET_CHECKSUM(zcp, a, b, c, d); } + +static void +fletcher_4_byteswap(const void *buf, uint64_t size, zio_cksum_t *zcp) +{ + const uint32_t *ip = buf; + const uint32_t *ipend = ip + (size / sizeof (uint32_t)); + uint64_t a, b, c, d; + + for (a = b = c = d = 0; ip < ipend; ip++) { + a += BSWAP_32(ip[0]); + b += a; + c += b; + d += c; + } + + ZIO_SET_CHECKSUM(zcp, a, b, c, d); +} |
