#ifndef _NF_CONNTRACK_L4PROTO_H
#define _NF_CONNTRACK_L4PROTO_H
+#include <linux/netlink.h>
+#include <net/netlink.h>
#include <net/netfilter/nf_conntrack.h>
struct seq_file;
-struct nfattr;
struct nf_conntrack_l4proto
{
- /* Next pointer. */
- struct list_head list;
-
/* L3 Protocol number. */
u_int16_t l3proto;
/* L4 Protocol number. */
u_int8_t l4proto;
- /* Protocol name */
- const char *name;
-
/* Try to fill in the third arg: dataoff is offset past network protocol
hdr. Return true if possible. */
- int (*pkt_to_tuple)(const struct sk_buff *skb,
- unsigned int dataoff,
- struct nf_conntrack_tuple *tuple);
+ bool (*pkt_to_tuple)(const struct sk_buff *skb, unsigned int dataoff,
+ struct nf_conntrack_tuple *tuple);
/* Invert the per-proto part of the tuple: ie. turn xmit into reply.
* Some packets can't be inverted: return 0 in that case.
*/
- int (*invert_tuple)(struct nf_conntrack_tuple *inverse,
- const struct nf_conntrack_tuple *orig);
-
- /* Print out the per-protocol part of the tuple. Return like seq_* */
- int (*print_tuple)(struct seq_file *s,
- const struct nf_conntrack_tuple *);
-
- /* Print out the private part of the conntrack. */
- int (*print_conntrack)(struct seq_file *s, const struct nf_conn *);
+ bool (*invert_tuple)(struct nf_conntrack_tuple *inverse,
+ const struct nf_conntrack_tuple *orig);
/* Returns verdict for packet, or -1 for invalid. */
- int (*packet)(struct nf_conn *conntrack,
+ int (*packet)(struct nf_conn *ct,
const struct sk_buff *skb,
unsigned int dataoff,
enum ip_conntrack_info ctinfo,
- int pf,
+ u_int8_t pf,
unsigned int hooknum);
/* Called when a new connection for this protocol found;
* returns TRUE if it's OK. If so, packet() called next. */
- int (*new)(struct nf_conn *conntrack, const struct sk_buff *skb,
- unsigned int dataoff);
+ bool (*new)(struct nf_conn *ct, const struct sk_buff *skb,
+ unsigned int dataoff);
/* Called when a conntrack entry is destroyed */
- void (*destroy)(struct nf_conn *conntrack);
+ void (*destroy)(struct nf_conn *ct);
- int (*error)(struct sk_buff *skb, unsigned int dataoff,
+ int (*error)(struct net *net, struct sk_buff *skb, unsigned int dataoff,
enum ip_conntrack_info *ctinfo,
- int pf, unsigned int hooknum);
+ u_int8_t pf, unsigned int hooknum);
+
+ /* Print out the per-protocol part of the tuple. Return like seq_* */
+ int (*print_tuple)(struct seq_file *s,
+ const struct nf_conntrack_tuple *);
+
+ /* Print out the private part of the conntrack. */
+ int (*print_conntrack)(struct seq_file *s, const struct nf_conn *);
/* convert protoinfo to nfnetink attributes */
- int (*to_nfattr)(struct sk_buff *skb, struct nfattr *nfa,
+ int (*to_nlattr)(struct sk_buff *skb, struct nlattr *nla,
const struct nf_conn *ct);
+ /* Calculate protoinfo nlattr size */
+ int (*nlattr_size)(void);
/* convert nfnetlink attributes to protoinfo */
- int (*from_nfattr)(struct nfattr *tb[], struct nf_conn *ct);
+ int (*from_nlattr)(struct nlattr *tb[], struct nf_conn *ct);
- int (*tuple_to_nfattr)(struct sk_buff *skb,
+ int (*tuple_to_nlattr)(struct sk_buff *skb,
const struct nf_conntrack_tuple *t);
- int (*nfattr_to_tuple)(struct nfattr *tb[],
+ /* Calculate tuple nlattr size */
+ int (*nlattr_tuple_size)(void);
+ int (*nlattr_to_tuple)(struct nlattr *tb[],
struct nf_conntrack_tuple *t);
+ const struct nla_policy *nla_policy;
+
+ size_t nla_size;
+
+#ifdef CONFIG_SYSCTL
+ struct ctl_table_header **ctl_table_header;
+ struct ctl_table *ctl_table;
+ unsigned int *ctl_table_users;
+#ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
+ struct ctl_table_header *ctl_compat_table_header;
+ struct ctl_table *ctl_compat_table;
+#endif
+#endif
+ /* Protocol name */
+ const char *name;
/* Module (if any) which this is connected to. */
struct module *me;
};
-/* Existing built-in protocols */
-extern struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp6;
-extern struct nf_conntrack_l4proto nf_conntrack_l4proto_udp4;
-extern struct nf_conntrack_l4proto nf_conntrack_l4proto_udp6;
+/* Existing built-in generic protocol */
extern struct nf_conntrack_l4proto nf_conntrack_l4proto_generic;
#define MAX_NF_CT_PROTO 256
-extern struct nf_conntrack_l4proto **nf_ct_protos[PF_MAX];
extern struct nf_conntrack_l4proto *
__nf_ct_l4proto_find(u_int16_t l3proto, u_int8_t l4proto);
-extern struct nf_conntrack_l4proto *
-nf_ct_l4proto_find_get(u_int16_t l3proto, u_int8_t protocol);
-
-extern void nf_ct_l4proto_put(struct nf_conntrack_l4proto *p);
-
/* Protocol registration. */
extern int nf_conntrack_l4proto_register(struct nf_conntrack_l4proto *proto);
-extern int nf_conntrack_l4proto_unregister(struct nf_conntrack_l4proto *proto);
+extern void nf_conntrack_l4proto_unregister(struct nf_conntrack_l4proto *proto);
/* Generic netlink helpers */
-extern int nf_ct_port_tuple_to_nfattr(struct sk_buff *skb,
+extern int nf_ct_port_tuple_to_nlattr(struct sk_buff *skb,
const struct nf_conntrack_tuple *tuple);
-extern int nf_ct_port_nfattr_to_tuple(struct nfattr *tb[],
+extern int nf_ct_port_nlattr_to_tuple(struct nlattr *tb[],
struct nf_conntrack_tuple *t);
-
-/* Log invalid packets */
-extern unsigned int nf_ct_log_invalid;
+extern int nf_ct_port_nlattr_tuple_size(void);
+extern const struct nla_policy nf_ct_port_nla_policy[];
#ifdef CONFIG_SYSCTL
#ifdef DEBUG_INVALID_PACKETS
-#define LOG_INVALID(proto) \
- (nf_ct_log_invalid == (proto) || nf_ct_log_invalid == IPPROTO_RAW)
+#define LOG_INVALID(net, proto) \
+ ((net)->ct.sysctl_log_invalid == (proto) || \
+ (net)->ct.sysctl_log_invalid == IPPROTO_RAW)
#else
-#define LOG_INVALID(proto) \
- ((nf_ct_log_invalid == (proto) || nf_ct_log_invalid == IPPROTO_RAW) \
+#define LOG_INVALID(net, proto) \
+ (((net)->ct.sysctl_log_invalid == (proto) || \
+ (net)->ct.sysctl_log_invalid == IPPROTO_RAW) \
&& net_ratelimit())
#endif
#else
-#define LOG_INVALID(proto) 0
+static inline int LOG_INVALID(struct net *net, int proto) { return 0; }
#endif /* CONFIG_SYSCTL */
#endif /*_NF_CONNTRACK_PROTOCOL_H*/
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