C++ (Cpp) ebt_filter_config Exemples

Exemple #1

Fichier : ebt_stp.c Projet : avagin/linux

static bool
ebt_stp_mt(const struct sk_buff *skb, struct xt_action_param *par)
{
	const struct ebt_stp_info *info = par->matchinfo;
	const struct stp_header *sp;
	struct stp_header _stph;
	const u8 header[6] = {0x42, 0x42, 0x03, 0x00, 0x00, 0x00};

	sp = skb_header_pointer(skb, 0, sizeof(_stph), &_stph);
	if (sp == NULL)
		return false;

	/* The stp code only considers these */
	if (memcmp(sp, header, sizeof(header)))
		return false;

	if ((info->bitmask & EBT_STP_TYPE) &&
	    NF_INVF(info, EBT_STP_TYPE, info->type != sp->type))
		return false;

	if (sp->type == BPDU_TYPE_CONFIG &&
	    info->bitmask & EBT_STP_CONFIG_MASK) {
		const struct stp_config_pdu *st;
		struct stp_config_pdu _stpc;

		st = skb_header_pointer(skb, sizeof(_stph),
					sizeof(_stpc), &_stpc);
		if (st == NULL)
			return false;
		return ebt_filter_config(info, st);
	}
	return true;
}

Exemple #2

Fichier : ebt_stp.c Projet : IgnasD/Tomato-RAF

static int ebt_filter_stp(const struct sk_buff *skb, const struct net_device *in,
   const struct net_device *out, const void *data, unsigned int datalen)
{
	struct ebt_stp_info *info = (struct ebt_stp_info *)data;
	struct stp_header _stph, *sp;
	uint8_t header[6] = {0x42, 0x42, 0x03, 0x00, 0x00, 0x00};

	sp = skb_header_pointer(skb, 0, sizeof(_stph), &_stph);
	if (sp == NULL)
		return EBT_NOMATCH;

	/* The stp code only considers these */
	if (memcmp(sp, header, sizeof(header)))
		return EBT_NOMATCH;

	if (info->bitmask & EBT_STP_TYPE
	    && FWINV(info->type != sp->type, EBT_STP_TYPE))
		return EBT_NOMATCH;

	if (sp->type == BPDU_TYPE_CONFIG &&
	    info->bitmask & EBT_STP_CONFIG_MASK) {
		struct stp_config_pdu _stpc, *st;

		st = skb_header_pointer(skb, sizeof(_stph),
					sizeof(_stpc), &_stpc);
		if (st == NULL)
			return EBT_NOMATCH;
		return ebt_filter_config(info, st);
	}
	return EBT_MATCH;
}