MPT_HOST_NO_CHAIN
ioc->ReqToChain[ii] = MPT_HOST_NO_CHAIN;
ioc->ReqToChain[req_idx] = MPT_HOST_NO_CHAIN;
while (chain_idx != MPT_HOST_NO_CHAIN) {
ioc->ChainToChain[chain_idx] = MPT_HOST_NO_CHAIN;
chain_idx = MPT_HOST_NO_CHAIN;
int chain_idx = MPT_HOST_NO_CHAIN;