static inline void fletcher_4_byteswap_impl(const void *buf, uint64_t size, zio_cksum_t *zcp) { fletcher_4_ctx_t ctx; const fletcher_4_ops_t *ops = fletcher_4_impl_get(); ops->init_byteswap(&ctx); ops->compute_byteswap(&ctx, buf, size); ops->fini_byteswap(&ctx, zcp); }
void fletcher_4_byteswap(const void *buf, uint64_t size, zio_cksum_t *zcp) { const fletcher_4_ops_t *ops; uint64_t p2size = P2ALIGN(size, 64); ASSERT(IS_P2ALIGNED(size, sizeof (uint32_t))); if (size == 0) { ZIO_SET_CHECKSUM(zcp, 0, 0, 0, 0); } else if (p2size == 0) { ops = &fletcher_4_scalar_ops; fletcher_4_byteswap_impl(ops, buf, size, zcp); } else { ops = fletcher_4_impl_get(); fletcher_4_byteswap_impl(ops, buf, p2size, zcp); if (p2size < size) fletcher_4_incremental_byteswap((char *)buf + p2size, size - p2size, zcp); } }