/*mac层报头的长度*/53hdr_len;/*用于clone时,表示clone的skb的头长度*/5455/*Following fields are _not_ copied in __copy_skb_header()56* Note that queue_mapping is here mostly to fill a hole.57*/58kmemcheck_bitfield_begin(flags1);59__u16 queue_mapping;6061/*if you move...
skb = queue->rx_skbuff[entry];if(unlikely(!skb)) { netdev_err(bp->dev,"inconsistent Rx descriptor chain\n"); bp->dev->stats.rx_dropped++; queue->stats.rx_dropped++;break; }/*now everything is ready for receiving packet*/queue->rx_skbuff[entry] =NULL; len= ctrl & bp->rx_frm...
55 /* Following fields are _not_ copied in __copy_skb_header() 56 * Note that queue_mapping is here mostly to fill a hole. 57 */ 58 kmemcheck_bitfield_begin(flags1); 59 __u16 queue_mapping; 60 61 /* if you move cloned around you also must adapt those constants */ 62 #ifdef...
__field(unsigned int, length):表示数据包长度。 __field(unsigned int, queue_mapping):表示用于标识数据包所属队列的索引。 __string(name, const char *):表示网络设备的名称。 通过这些信息,我们可以了解到每个进程发送的数据包大小、发送时使用的队列以及接收该数据包的网络设备。 收藏| 0点赞 | 0打赏...
That said, here's the proper page->pfmemalloc propagation onto socket: we must check the huge-page's head page only, other pages' pfmemalloc and mapping values do not contain what is expected in this place. However, I'm not sure whether this fix is _complete_, since pfmemalloc ...
But as soon as this skb is added to socket receive queue, another thread can consume it. This means that llc must use regular skb_unlink() and kfree_skb() so that both producer and consumer can safely work on the same skb. [1] BUG: KASAN: use-after-free in atomic_read include/...
The remaining fields, such as `queue_mapping`, `priority`, and `protocol`, are also initialized. The allocated `sk_buff` buffer can then be used by the network device driver to store incoming packets from the hardware device or to prepare outgoing packets for transmission. The driver can ...
System Interrupt Controller (SIC) The System Interrupt Controller provides the mapping and routing of events from the many peripheral interrupt sources to the prioritized general-purpose interrupt inputs of the CEC. Although the ADSP-BF561 provides a default mapping, the user can alter the mappings...
一旦__netdev_pick_tx 确定了队列号,skb_set_queue_mapping 将缓存该值(稍后将在流量控制代码中使用),netdev_get_tx_queue 将查找并返回指向该队列的指针。让我们 看一下__netdev_pick_tx 在返回__dev_queue_xmit 之前的工作原理。 2.2 __netdev_pick_tx ...
struct__sk_buff {__u32len; /* 整个数据区域的长度, 这个 len 只计算有效的协议长度,如果在 l3 时, 不会计算 l2 的协议头长度*/__u32pkt_type; /*标记帧的类型*/__u32mark;__u32queue_mapping;__u32protocol; /*协议类型*/__u32vlan_present;__u32vlan_tci;__u32vlan_proto;__u32priorit...