rte_atomic64_add(&dev_statistics[dev->device_fh].rx_bad_ip_csum, (pkts_burst[i]->ol_flags & PKT_RX_L4_CKSUM_BAD) != 0); } ret = vxlan_rx_process(pkts_burst[i]); if (unlikely(ret < 0)) continue; pkts_valid[count] = pkts_burst[i]; count++; } ret = rte_vhost_enqueue_...
struct rte_eth_rxtx_callback *post_rx_burst_cbs[RTE_MAX_QUEUES_PER_PORT]; /** * User-supplied functions called from tx_burst to pre-process * received packets before passing them to the driver for transmission. */ struct rte_eth_rxtx_callback *pre_tx_burst_cbs[RTE_MAX_QUEUES_PER_POR...
struct rte_eth_rxtx_callback *post_rx_burst_cbs[RTE_MAX_QUEUES_PER_PORT]; /** * User-supplied functions called from tx_burst to pre-process * received packets before passing them to the driver for transmission. */ struct rte_eth_rxtx_callback *pre_tx_burst_cbs[RTE_MAX_QUEUES_PER_POR...
struct rte_eth_rxtx_callback *post_rx_burst_cbs[RTE_MAX_QUEUES_PER_PORT]; /** * User-supplied functions called from tx_burst to pre-process * received packets before passing them to the driver for transmission. */ struct rte_eth_rxtx_callback *pre_tx_burst_cbs[RTE_MAX_QUEUES_PER_POR...
Burst为一次完成多个数据包的收发,通过把收发包复杂的处理过程进行分解,打散成不同的相对较小的处理阶段,把相邻数据访问、相似的数据运算集中处理,尽可能减少对内存或者低一级的处理器缓存的访问次数。网卡收发包描述符一般为16字节或32字节,处理器缓存基本单位为64字节,可以存放2个或4个描述符,处理器预期机制会每次...
DPDK的应用代码,会调用rte_eth_rx_burst读取数据报文。 图17.rte_eth_rx_burst在这个函数中,会调用驱动...循环。 对应RTC模型的DPDK应用来说,就是不断的调用rte_eth_rx_burst去“问”网卡是否有新的报文。如果有,就取走所有的报文或达到参数nb_pkts的上限。然后...
nb_rxd = rte_eth_rx_burst(port, 0, app.mbuf_rx.array, n_toread); port_statistics[port].rx += nb_rxd; Could rte_eth_tx_burst() be reading more than I ask for? And/or returning an incorrect count? Any other ways I could be losing packets? I have one of...
Burst enqueue - Enqueue the maximum available objects if the specified count cannot be fulfilled 实现原理: 以如队为例,对ring的操作需要在一个循环里。 1 prod_head = ring->prod_head首先将ring结构中的prod_head保存到本地。 2然后执行CAS指令:Compare and swap(CAS) :如果本地prod_head不等于ring_pr...
Burst enqueue - Enqueue the maximum available objects if the specified count cannot be fulfilled 实现原理: 以如队为例,对ring的操作需要在一个循环里。 1 prod_head = ring->prod_head首先将ring结构中的prod_head保存到本地。 2然后执行CAS指令:Compare and swap(CAS) :如果本地prod_head不等于ring_pr...
Basic Multi-process Example,DPDK进程间通过ring,内存池,队列,进行信息交互。Symmetric Multi-process Example,主进程初始化所有资源,副进程直接获取资源进行数据包处理,副进程除了不初始化资源,数据包处理和主进程是一样的。每个进程获取每个端口的一个RX, TX队列。Client-Server Multi-process Example,主进程初始化资源...