SpletPBUF_POOL_BUFSIZE 是每个pbuf的数据区长度 struct pbuf是pbuf的头结构. 声明pbuf_pool_memory的长度值可以简化成: x = (MEM_ALIGNMENT - 1) + … Splet25. feb. 2024 · PBUF_ROM 和 PBUF_REF 类型的 pbuf 基本相同,它们的申请都是在内存池中分配一个相应的 pbuf结构(即 MEMP_PBUF 类型的 POOL),而不申请数据区的空间 在发送某些静态数据时,可以采用这两种类型的 pbuf,这将大大节省协议栈的内存空间。
关于lwip中pbuf_alloc()内存申请函数-疯也枉然-ChinaUnix博客
SpletPBUF_REF: no buffer memory is allocated for the pbuf, even for protocol headers. It is assumed that the pbuf is only being used in a single thread. If the pbuf gets queued, then pbuf_take should be called to copy the buffer. PBUF_POOL: the pbuf is allocated as a pbuf chain, with pbufs from the pbuf pool that is allocated during pbuf_init(). Returns Splet12. feb. 2024 · pbuf_pool_size * pbuf_pool_bufsize 的值就是接收数据内存总的大小 用户需要根据接收的数据包的平均大小来设置这两个值。 PBUF_POOL_BUFSIZE 设置的太小, … the siren and the specter jonathan janz
6. 网络数据包 — [野火]LwIP应用开发实战指南—基于野火STM32 文档
Splet在下文中一共展示了pbuf_cat函数的15个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于我们的系统推荐出更棒的C++代 … Splet02. mar. 2024 · But after reducing > PBUF_POOL_SIZE to 6 the TCP stack started to get slow and hanged. > > We found out that the values were wrong and pBuf are allocated > from the PBUF_POOL and its size is PBUF_POOL_SIZE * PBUF_POOL_BUFSIZE > */ > #define MEMP_NUM_PBUF 25 > > /* MEMP_NUM_UDP_PCB: the number of UDP protocol … Splet11. maj 2016 · 一、Pbuf 看pbuf_alloc (pbuf_layer layer, u16_t length, pbuf_type type) 分layer和type ØPBUF_RAM 在RAM DATA区域分配 p = (struct … the siren becoming the villain\\u0027s family