qla2xxx_mq_chain
struct qla2xxx_mq_chain *mq = ptr;
mq->chain_size = htonl(sizeof(struct qla2xxx_mq_chain));
return ptr + sizeof(struct qla2xxx_mq_chain);
mq_size = sizeof(struct qla2xxx_mq_chain);
BUILD_BUG_ON(sizeof(struct qla2xxx_mq_chain) != 524);