raw socket

先看看如何使用: https://stackoverflow.com/questions/12588727/simple-raw-socket-server-in-c-c-on-linux

struct proto raw_prot = {
	.name		   = "RAW",
	.owner		   = THIS_MODULE,
	.close		   = raw_close,
	.destroy	   = raw_destroy,
	.connect	   = ip4_datagram_connect,
	.disconnect	   = __udp_disconnect,
	.ioctl		   = raw_ioctl,
	.init		   = raw_sk_init,
	.setsockopt	   = raw_setsockopt,
	.getsockopt	   = raw_getsockopt,
	.sendmsg	   = raw_sendmsg,
	.recvmsg	   = raw_recvmsg,
	.bind		   = raw_bind,
	.backlog_rcv	   = raw_rcv_skb,
	.release_cb	   = ip4_datagram_release_cb,
	.hash		   = raw_hash_sk,
	.unhash		   = raw_unhash_sk,
	.obj_size	   = sizeof(struct raw_sock),
	.useroffset	   = offsetof(struct raw_sock, filter),
	.usersize	   = sizeof_field(struct raw_sock, filter),
	.h.raw_hash	   = &raw_v4_hashinfo,
#ifdef CONFIG_COMPAT
	.compat_ioctl	   = compat_raw_ioctl,
#endif
	.diag_destroy	   = raw_abort,
};

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