xxh64_reset
xxh64_reset(&dctx->xxhstate, tctx->seed);
xxh64_reset(&ctx->xxh64, 0);
void xxh64_reset(struct xxh64_state *state, uint64_t seed);
EXPORT_SYMBOL(xxh64_reset);
xxh64_reset(&zc->xxhState, 0);
if (dctx->validateChecksum) xxh64_reset(&dctx->xxhState, 0);