rte_mbuf整个用来存数据的buf包括headroom、data和tailroom三个区域。Headroom区域默认128字节,可以通过宏RTE_PKTMBUF_HEADROOM调整。Data区域一般指的是地址区间在buf_addr + data_off到buf_addr + data_off + data_len,即data_len就是这段数据的长短。Tailroom一般指的是data_len还未包含的东西,默认其实data_len...
将一个文件或SOCKET的句柄fd传递给多个线程，进行读、写和Close操作，是否安全了？答案是“否”，这类似...
j;if(rte_pktmbuf_alloc_bulk(p->mempool, pkts, n_pkts) !=0)return0;for(i =0; i < n_pkts; i++) {structrte_mbuf*pkt=pkts[i];void*pkt_data = rte_pktmbuf_mtod(pkt,void*);ssize_tn_bytes;
elt_size是为网卡接收的数据包预先分配的内存的大小,该内存块就是rte_mbuf->pkt.data的实际存储区域。具体如上图所示。 在申请的rte_mempool内存块中,最前面存储struct rte_mempool数据结构,后面紧接着是rte_pktmbuf_pool_private数据,再后面就是N个rte_mbuf内存块。 每个rte_mbuf内存中,最前面同样存储的是struct...
uint16_t rte_pktmbuf_tailroom(const struct rte_mbuf *m) 假设m->pkt.data指向报文的二层首地址,我们可以通过以下一系列操作剥去报文的二层头部: m->pkt.data += 14; m->pkt.data_len -= 14; m->pkt.pkt_len -= 14; 这些操作已经由rte_pktmbuf_adj()实现,函数原型如下: ...
mbufs[i] =rte_pktmbuf_alloc(mbuf_pool);if(mbufs[i] ==NULL) {printf("Failed to allocate mbuf\n");continue; }char*data =rte_pktmbuf_mtod(mbufs[i],char*);snprintf(data,rte_pktmbuf_tailroom(mbufs[i]),"Hello from producer %ld!", (long)arg);rte_pktmbuf_pkt_len(mbufs[i]) =st...
rte_pktmbuf_clone(structrte_mbuf *md,structrte_mempool *mp) {structrte_mbuf *mc, *mi, **prev; uint32_t pktlen; uint16_t nseg; mc=rte_pktmbuf_alloc(mp);if(unlikely(mc ==NULL))returnNULL; mi=mc; prev=&mi->next;pktlen= md->pkt_len; ...
defineMBUF_COUNT (1024-1)#definePRIV_SIZE 16//ETH_MAX_len = 1518//ETH_MTU = ETH_MAX_LEN - ETH_HDR_LEN - ETHER_CRC_LEN = 1518 - 14 - 4 = 1500#defineMBUF_DATAROOM_SIZE (RTE_PKTMBUF_HEADROOM + RTE_ETHER_MAX_LEN)#defineMBUF_SIZE (sizeof(struct rte_mbuf) + PRIV_SIZE + MBUF...
前面聊了大于8KB的内存分配，那小于8KB的呢？上一篇的平衡二叉树第十一层的叶子节点最小也是8KB，那...
C++ (Cpp) rte_pktmbuf_alloc - 30 examples found. These are the top rated real world C++ (Cpp) examples of rte_pktmbuf_alloc extracted from open source projects. You can rate examples to help us improve the quality of examples.