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git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/blob - include/net/netfilter/nf_log.h
1 /* SPDX-License-Identifier: GPL-2.0 */
5 #include <linux/netfilter.h>
6 #include <linux/netfilter/nf_log.h>
8 /* Log tcp sequence, tcp options, ip options and uid owning local socket */
9 #define NF_LOG_DEFAULT_MASK 0x0f
11 /* This flag indicates that copy_len field in nf_loginfo is set */
12 #define NF_LOG_F_COPY_LEN 0x1
24 /* copy_len will be used iff you set
25 * NF_LOG_F_COPY_LEN in flags
39 typedef void nf_logfn(struct net
*net
,
42 const struct sk_buff
*skb
,
43 const struct net_device
*in
,
44 const struct net_device
*out
,
45 const struct nf_loginfo
*li
,
50 enum nf_log_type type
;
55 /* sysctl_nf_log_all_netns - allow LOG target in all network namespaces */
56 extern int sysctl_nf_log_all_netns
;
58 /* Function to register/unregister log function. */
59 int nf_log_register(u_int8_t pf
, struct nf_logger
*logger
);
60 void nf_log_unregister(struct nf_logger
*logger
);
62 int nf_log_set(struct net
*net
, u_int8_t pf
, const struct nf_logger
*logger
);
63 void nf_log_unset(struct net
*net
, const struct nf_logger
*logger
);
65 int nf_log_bind_pf(struct net
*net
, u_int8_t pf
,
66 const struct nf_logger
*logger
);
67 void nf_log_unbind_pf(struct net
*net
, u_int8_t pf
);
69 int nf_logger_find_get(int pf
, enum nf_log_type type
);
70 void nf_logger_put(int pf
, enum nf_log_type type
);
71 void nf_logger_request_module(int pf
, enum nf_log_type type
);
73 #define MODULE_ALIAS_NF_LOGGER(family, type) \
74 MODULE_ALIAS("nf-logger-" __stringify(family) "-" __stringify(type))
76 /* Calls the registered backend logging function */
78 void nf_log_packet(struct net
*net
,
81 const struct sk_buff
*skb
,
82 const struct net_device
*in
,
83 const struct net_device
*out
,
84 const struct nf_loginfo
*li
,
85 const char *fmt
, ...);
88 void nf_log_trace(struct net
*net
,
91 const struct sk_buff
*skb
,
92 const struct net_device
*in
,
93 const struct net_device
*out
,
94 const struct nf_loginfo
*li
,
95 const char *fmt
, ...);
99 struct nf_log_buf
*nf_log_buf_open(void);
100 __printf(2, 3) int nf_log_buf_add(struct nf_log_buf
*m
, const char *f
, ...);
101 void nf_log_buf_close(struct nf_log_buf
*m
);
103 /* common logging functions */
104 int nf_log_dump_udp_header(struct nf_log_buf
*m
, const struct sk_buff
*skb
,
105 u8 proto
, int fragment
, unsigned int offset
);
106 int nf_log_dump_tcp_header(struct nf_log_buf
*m
, const struct sk_buff
*skb
,
107 u8 proto
, int fragment
, unsigned int offset
,
108 unsigned int logflags
);
109 void nf_log_dump_sk_uid_gid(struct net
*net
, struct nf_log_buf
*m
,
111 void nf_log_dump_packet_common(struct nf_log_buf
*m
, u_int8_t pf
,
112 unsigned int hooknum
, const struct sk_buff
*skb
,
113 const struct net_device
*in
,
114 const struct net_device
*out
,
115 const struct nf_loginfo
*loginfo
,
117 void nf_log_l2packet(struct net
*net
, u_int8_t pf
,
119 unsigned int hooknum
,
120 const struct sk_buff
*skb
,
121 const struct net_device
*in
,
122 const struct net_device
*out
,
123 const struct nf_loginfo
*loginfo
, const char *prefix
);
125 #endif /* _NF_LOG_H */