原文链接：
https://doc.dpdk.org/guides/prog_guide/overview.html#environment-abstraction-layer

正文如下：

2.2. Environment Abstraction Layer

The Environment Abstraction Layer (EAL) provides a generic interface that hides the environment specifics from the applications and libraries. The services provided by the EAL are:

• DPDK loading and launching
• Support for multi-process and multi-thread execution types
• Core affinity/assignment procedures
• 系统内存申请和释放 System memory allocation/de-allocation
• 无锁读写操作 Atomic/lock operations
• Time reference
• PCI bus access
• Trace and debug functions
• CPU feature identification
• Interrupt handling
• Alarm operations
• 内存管理 Memory management (malloc)

The EAL is fully described in Environment Abstraction Layer.