Function ng_nat_rcvmsg

freebsd/netgraph/ng_nat.c:358–752

}

static int
ng_nat_rcvmsg(node_p node, item_p item, hook_p lasthook)
{
	const priv_p priv = NG_NODE_PRIVATE(node);
	struct ng_mesg *resp = NULL;
	struct ng_mesg *msg;
	int error = 0;

	NGI_GET_MSG(item, msg);

	switch (msg->header.typecookie) {
	case NGM_NAT_COOKIE:
		switch (msg->header.cmd) {
		case NGM_NAT_SET_IPADDR:
		    {
			struct in_addr *const ia = (struct in_addr *)msg->data;

			if (msg->header.arglen < sizeof(*ia)) {
				error = EINVAL;
				break;
			}

			LibAliasSetAddress(priv->lib, *ia);

			priv->flags |= NGNAT_ADDR_DEFINED;
		    }
			break;
		case NGM_NAT_SET_MODE:
		    {
			struct ng_nat_mode *const mode = 
			    (struct ng_nat_mode *)msg->data;

			if (msg->header.arglen < sizeof(*mode)) {
				error = EINVAL;
				break;
			}
			
			if (LibAliasSetMode(priv->lib, 
			    ng_nat_translate_flags(mode->flags),
			    ng_nat_translate_flags(mode->mask)) < 0) {
				error = ENOMEM;
				break;
			}
		    }
			break;
		case NGM_NAT_SET_TARGET:
		    {
			struct in_addr *const ia = (struct in_addr *)msg->data;

			if (msg->header.arglen < sizeof(*ia)) {
				error = EINVAL;
				break;
			}

			LibAliasSetTarget(priv->lib, *ia);
		    }
			break;
		case NGM_NAT_REDIRECT_PORT: