bd07793705
This patch adds the capability to attach expectations via nfnetlink_queue. This is required by conntrack helpers that trigger expectations based on the first packet seen like the TFTP and the DHCPv6 user-space helpers. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
#ifndef _NET_NFNL_QUEUE_H_
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#define _NET_NFNL_QUEUE_H_
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#include <linux/netfilter/nf_conntrack_common.h>
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struct nf_conn;
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#ifdef CONFIG_NETFILTER_NETLINK_QUEUE_CT
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struct nf_conn *nfqnl_ct_get(struct sk_buff *entskb, size_t *size,
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enum ip_conntrack_info *ctinfo);
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struct nf_conn *nfqnl_ct_parse(const struct sk_buff *skb,
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const struct nlattr *attr,
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enum ip_conntrack_info *ctinfo);
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int nfqnl_ct_put(struct sk_buff *skb, struct nf_conn *ct,
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enum ip_conntrack_info ctinfo);
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void nfqnl_ct_seq_adjust(struct sk_buff *skb, struct nf_conn *ct,
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enum ip_conntrack_info ctinfo, int diff);
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int nfqnl_attach_expect(struct nf_conn *ct, const struct nlattr *attr,
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u32 portid, u32 report);
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#else
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inline struct nf_conn *
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nfqnl_ct_get(struct sk_buff *entskb, size_t *size, enum ip_conntrack_info *ctinfo)
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{
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return NULL;
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}
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inline struct nf_conn *nfqnl_ct_parse(const struct sk_buff *skb,
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const struct nlattr *attr,
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enum ip_conntrack_info *ctinfo)
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{
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return NULL;
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}
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inline int
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nfqnl_ct_put(struct sk_buff *skb, struct nf_conn *ct, enum ip_conntrack_info ctinfo)
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{
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return 0;
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}
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inline void nfqnl_ct_seq_adjust(struct sk_buff *skb, struct nf_conn *ct,
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enum ip_conntrack_info ctinfo, int diff)
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{
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}
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inline int nfqnl_attach_expect(struct nf_conn *ct, const struct nlattr *attr,
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u32 portid, u32 report)
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{
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return 0;
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}
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#endif /* NF_CONNTRACK */
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#endif
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