The patch optimizes this case by converting the cached reference from a sequence number to a pointer to the highest packet in the queue that has been SACKed in the past.

这个补丁通过把已缓存的引用从一个序列号转换为指向队列中最高的包（过去已经选择性应答）的指针从而对此情况加以优化。

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Applying structure pointer and dynamic data structure, such as the linked list and queue in c, we have made the working software executed with less memory requirement and time overhead.

并根据C语言结构功能强的特点，采用结构指针及链表、队列等动态数据结构，使整个算法具有节省内存、快速省时的特点。

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Removing an entry from the queue involves extracting the entry pointed to by the head pointer and then adjusting the head pointer to point toward the entry that followed the removed entry.

将一条数据移出队列的操作包括将头指针指向的条目取出，将一条数据移出队列的操作包括将头指针指向的条目取出，同时调整头指针使之指向排在被移出条目之后的位置。

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