C++ (Cpp) DCCHECK Examples

Example #1

File: xt_dccp.c Project: kizukukoto/WDN900_GPL

static bool
dccp_mt(const struct sk_buff *skb, const struct xt_match_param *par)
{
	const struct xt_dccp_info *info = par->matchinfo;
	const struct dccp_hdr *dh;
	struct dccp_hdr _dh;

	if (par->fragoff != 0)
		return false;

	dh = skb_header_pointer(skb, par->thoff, sizeof(_dh), &_dh);
	if (dh == NULL) {
		*par->hotdrop = true;
		return false;
	}

	return  DCCHECK(ntohs(dh->dccph_sport) >= info->spts[0]
			&& ntohs(dh->dccph_sport) <= info->spts[1],
			XT_DCCP_SRC_PORTS, info->flags, info->invflags)
		&& DCCHECK(ntohs(dh->dccph_dport) >= info->dpts[0]
			&& ntohs(dh->dccph_dport) <= info->dpts[1],
			XT_DCCP_DEST_PORTS, info->flags, info->invflags)
		&& DCCHECK(match_types(dh, info->typemask),
			   XT_DCCP_TYPE, info->flags, info->invflags)
		&& DCCHECK(match_option(info->option, skb, par->thoff, dh,
					par->hotdrop),
			   XT_DCCP_OPTION, info->flags, info->invflags);
}

Example #2

File: xt_dccp.c Project: jameshilliard/actiontec_opensrc_mi424wr-rev-e-f_fw-20-10-7-5

static int
match(const struct sk_buff *skb,
      const struct net_device *in,
      const struct net_device *out,
      const void *matchinfo,
      int offset,
      unsigned int protoff,
      int *hotdrop)
{
	const struct xt_dccp_info *info = 
				(const struct xt_dccp_info *)matchinfo;
	struct dccp_hdr _dh, *dh;

	if (offset)
		return 0;
	
	dh = skb_header_pointer(skb, protoff, sizeof(_dh), &_dh);
	if (dh == NULL) {
		*hotdrop = 1;
		return 0;
       	}

	return  DCCHECK(((ntohs(dh->dccph_sport) >= info->spts[0]) 
			&& (ntohs(dh->dccph_sport) <= info->spts[1])), 
		   	XT_DCCP_SRC_PORTS, info->flags, info->invflags)
		&& DCCHECK(((ntohs(dh->dccph_dport) >= info->dpts[0]) 
			&& (ntohs(dh->dccph_dport) <= info->dpts[1])), 
			XT_DCCP_DEST_PORTS, info->flags, info->invflags)
		&& DCCHECK(match_types(dh, info->typemask),
			   XT_DCCP_TYPE, info->flags, info->invflags)
		&& DCCHECK(match_option(info->option, skb, protoff, dh,
					hotdrop),
			   XT_DCCP_OPTION, info->flags, info->invflags);
}