马克-to-win，子类把父类的方法和属性当成自己的一样随便用的这种现象叫继承。In OOP, the ability t...
n->ip_summed = skb->ip_summed;if(skb_copy_bits(skb, -headerlen, n->head, headerlen + skb->len))BUG();copy_skb_header(n, skb);returnn; }
n->ip_summed = skb->ip_summed;if(skb_copy_bits(skb, -headerlen, n->head, headerlen + skb->len))BUG();copy_skb_header(n, skb);returnn; }
The 'ip_summed' field describes what kind of checksumming assistence the card has provided for a receive packet. It takes on one of three values: 'CHECKSUM_NONE' if the card provided no checksum assistence, 'CHECKSUM_HW' if the two's complement checksum over the entire packet has been p...
> + if (!skb_is_gso(skb)) > sctp_nat_csum(skb, sctph, sctphoff); > } else if (skb->ip_summed != CHECKSUM_PARTIAL) { > skb->ip_summed = CHECKSUM_UNNECESSARY; > -- > 2.44.0 Regards -- Julian Anastasov <j...@ssi.bg>...
skb->protocol=eth_type_trans(skb,dev); skb->ip_summed=CHECKSUM_UNNECESSARY;/* don't check it */ priv->stats.rx_packets++; priv->stats.rx_bytes+=pkt->datalen; netif_rx(skb); 注意:上面代码中红色放大的地方是重要的。 因为此刻收到的数据包的格式如下:mac+ip+udp/udp+data ...
skb->ip_summed=CHECKSUM_UNNECESSARY;/* don't check it */ priv->stats.rx_packets++; priv->stats.rx_bytes+=pkt->datalen; netif_rx(skb); 注意:上面代码中红色放大的地方是重要的。 因为此刻收到的数据包的格式如下:mac+ip+udp/udp+data ...
kernel: ---[ cut here ]--- kernel: WARNING: CPU: 3 PID: 2696 at net/core/dev.c:2496 skb_warn_bad_offload+0xcd/0xda kernel: : caps=(0x0000362007db58e9, 0x0000000000000000) len=2342 data_len=2214 gso_size=1398 gso_type=5 ip_summed=1 kernel: Modules linked in: nfsv3 twofish_...
[1] [ 67.873027] skb len=4096 headroom=16 headlen=14 tailroom=0 mac=(-1,-1) mac_len=0 net=(16,-6) trans=10 shinfo(txflags=0 nr_frags=1 gso(size=0 type=0 segs=0)) csum(0xa start=10 offset=0 ip_summed=3 complete_sw=0 valid=0 level=0) hash(0x0 sw=0 l4=0) proto...
len,data_len,mac_len,csum;__u32 priority;__u8 local_df:1,cloned:1,ip_summed:2,nohdr:1,nfctinfo:3;__u8 pkt_type:3,