1inteth_header(structsk_buff *skb,structnet_device *dev, u16 type,void*daddr,void*saddr,intlen)2{3//将skb->data = skb->data + ETH_ALEN;4structethhdr *eth = (structethhdr*)skb_push(skb, ETH_ALEN);56if(type !=ETH_P_802_3)7eth->proto = htons(type);//htons()将本地类型转换...
1//文件:net/core/netfilter.c23intnf_hook_slow(intpf, unsignedinthook,structsk_buff *skb,4structnet_device *indev,structnet_device *outdev,5int(*okfn)(structsk_buff *))6{7structlist_head *elem;8unsignedintverdict;9intret =0;1011elem = &nf_hooks[pf][hook];//获取要调用的钩子函数链...
接下来假设路由器的本地网络走 eth0 端口,到公网的网络走 eth1 端口。那么如下iptables命令就能完成我们期望的功能: iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE 注册钩子函数 之后进入源码查看,一个钩子函数是怎么被注册的: nf_hook_ops是 netfilter 框架中用于定义钩子操作的结构体 structnf_hook_...
int(*set_wol)(struct phy_device *dev, struct ethtool_wolinfo *wol); void(*get_wol)(struct phy_device *dev, struct ethtool_wolinfo *wol); void(*link_change_notify)(struct phy_device *dev); int(*read_mmd)(struct phy_device *dev,intdevnum, u16 regnum); int(*write_mmd)(struct...
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对于一个网络设备来说,Linux 的操作和硬件设备的响应本身也需要一套规范,Linux 将其抽象为 net_device_ops 这个结构体,如果你对设备驱动感兴趣,那主要就是和它打交道,依然以 Veth 设备为例: static const struct net_device_ops veth_netdev_ops = { ...
iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE 注册钩子函数 之后进入源码查看,一个钩子函数是怎么被注册的: nf_hook_ops是 netfilter 框架中用于定义钩子操作的结构体 structnf_hook_ops{ nf_hookfn *hook;//指向钩子函数的指针,钩子函数将在数据包通过特定钩子时被调用 ...
pxa168_eth.h pxa2xx_ssp.h qcom-geni-se.h qcom_scm.h qnx6_fs.h quota.h quotaops.h radix-tree.h raid_class.h ramfs.h random.h randomize_kstack.h range.h ras.h ratelimit.h ratelimit_types.h 371 entries not shown math-emu media memory misc net pcmcia ras rdm...
BPF_MAP_TYPE_DEVMAP_HASH, BPF_MAP_TYPE_STRUCT_OPS, }; /* Note that tracing related programs such as Expand DownExpand Up@@ -398,6 +399,10 @@ union bpf_attr { __u32btf_fd;/* fd pointing to a BTF type data */ __u32btf_key_type_id;/* BTF type_id of the key */ ...
#endif const struct ethtool_ops *ethtool_ops; #ifdef CONFIG_NET_L3_MASTER_DEV const struct l3mdev_ops *l3mdev_ops; #endif #if IS_ENABLED(CONFIG_IPV6) const struct ndisc_ops *ndisc_ops; #endif #ifdef CONFIG_XFRM_OFFLOAD const struct xfrmdev_ops *xfrmdev_ops; #endif #if IS_ENABLED...