1#ifndef _NFNETLINK_QUEUE_H
2#define _NFNETLINK_QUEUE_H
3
4#include <linux/types.h>
5#include <linux/netfilter/nfnetlink.h>
6
7enum nfqnl_msg_types {
8	NFQNL_MSG_PACKET,		/* packet from kernel to userspace */
9	NFQNL_MSG_VERDICT,		/* verdict from userspace to kernel */
10	NFQNL_MSG_CONFIG,		/* connect to a particular queue */
11	NFQNL_MSG_VERDICT_BATCH,	/* batchv from userspace to kernel */
12
13	NFQNL_MSG_MAX
14};
15
16struct nfqnl_msg_packet_hdr {
17	__be32		packet_id;	/* unique ID of packet in queue */
18	__be16		hw_protocol;	/* hw protocol (network order) */
19	__u8	hook;		/* netfilter hook */
20} __attribute__ ((packed));
21
22struct nfqnl_msg_packet_hw {
23	__be16		hw_addrlen;
24	__u16	_pad;
25	__u8	hw_addr[8];
26};
27
28struct nfqnl_msg_packet_timestamp {
29	__aligned_be64	sec;
30	__aligned_be64	usec;
31};
32
33enum nfqnl_vlan_attr {
34	NFQA_VLAN_UNSPEC,
35	NFQA_VLAN_PROTO,		/* __be16 skb vlan_proto */
36	NFQA_VLAN_TCI,			/* __be16 skb htons(vlan_tci) */
37	__NFQA_VLAN_MAX,
38};
39#define NFQA_VLAN_MAX (__NFQA_VLAN_MAX + 1)
40
41enum nfqnl_attr_type {
42	NFQA_UNSPEC,
43	NFQA_PACKET_HDR,
44	NFQA_VERDICT_HDR,		/* nfqnl_msg_verdict_hrd */
45	NFQA_MARK,			/* __u32 nfmark */
46	NFQA_TIMESTAMP,			/* nfqnl_msg_packet_timestamp */
47	NFQA_IFINDEX_INDEV,		/* __u32 ifindex */
48	NFQA_IFINDEX_OUTDEV,		/* __u32 ifindex */
49	NFQA_IFINDEX_PHYSINDEV,		/* __u32 ifindex */
50	NFQA_IFINDEX_PHYSOUTDEV,	/* __u32 ifindex */
51	NFQA_HWADDR,			/* nfqnl_msg_packet_hw */
52	NFQA_PAYLOAD,			/* opaque data payload */
53	NFQA_CT,			/* nf_conntrack_netlink.h */
54	NFQA_CT_INFO,			/* enum ip_conntrack_info */
55	NFQA_CAP_LEN,			/* __u32 length of captured packet */
56	NFQA_SKB_INFO,			/* __u32 skb meta information */
57	NFQA_EXP,			/* nf_conntrack_netlink.h */
58	NFQA_UID,			/* __u32 sk uid */
59	NFQA_GID,			/* __u32 sk gid */
60	NFQA_SECCTX,			/* security context string */
61	NFQA_VLAN,			/* nested attribute: packet vlan info */
62	NFQA_L2HDR,			/* full L2 header */
63
64	__NFQA_MAX
65};
66#define NFQA_MAX (__NFQA_MAX - 1)
67
68struct nfqnl_msg_verdict_hdr {
69	__be32 verdict;
70	__be32 id;
71};
72
73
74enum nfqnl_msg_config_cmds {
75	NFQNL_CFG_CMD_NONE,
76	NFQNL_CFG_CMD_BIND,
77	NFQNL_CFG_CMD_UNBIND,
78	NFQNL_CFG_CMD_PF_BIND,
79	NFQNL_CFG_CMD_PF_UNBIND,
80};
81
82struct nfqnl_msg_config_cmd {
83	__u8	command;	/* nfqnl_msg_config_cmds */
84	__u8	_pad;
85	__be16		pf;		/* AF_xxx for PF_[UN]BIND */
86};
87
88enum nfqnl_config_mode {
89	NFQNL_COPY_NONE,
90	NFQNL_COPY_META,
91	NFQNL_COPY_PACKET,
92};
93
94struct nfqnl_msg_config_params {
95	__be32		copy_range;
96	__u8	copy_mode;	/* enum nfqnl_config_mode */
97} __attribute__ ((packed));
98
99
100enum nfqnl_attr_config {
101	NFQA_CFG_UNSPEC,
102	NFQA_CFG_CMD,			/* nfqnl_msg_config_cmd */
103	NFQA_CFG_PARAMS,		/* nfqnl_msg_config_params */
104	NFQA_CFG_QUEUE_MAXLEN,		/* __u32 */
105	NFQA_CFG_MASK,			/* identify which flags to change */
106	NFQA_CFG_FLAGS,			/* value of these flags (__u32) */
107	__NFQA_CFG_MAX
108};
109#define NFQA_CFG_MAX (__NFQA_CFG_MAX-1)
110
111/* Flags for NFQA_CFG_FLAGS */
112#define NFQA_CFG_F_FAIL_OPEN			(1 << 0)
113#define NFQA_CFG_F_CONNTRACK			(1 << 1)
114#define NFQA_CFG_F_GSO				(1 << 2)
115#define NFQA_CFG_F_UID_GID			(1 << 3)
116#define NFQA_CFG_F_SECCTX			(1 << 4)
117#define NFQA_CFG_F_MAX				(1 << 5)
118
119/* flags for NFQA_SKB_INFO */
120/* packet appears to have wrong checksums, but they are ok */
121#define NFQA_SKB_CSUMNOTREADY (1 << 0)
122/* packet is GSO (i.e., exceeds device mtu) */
123#define NFQA_SKB_GSO (1 << 1)
124/* csum not validated (incoming device doesn't support hw checksum, etc.) */
125#define NFQA_SKB_CSUM_NOTVERIFIED (1 << 2)
126
127#endif /* _NFNETLINK_QUEUE_H */
128