LXR linux/include/uapi/linux/netfilter/nfnetlink

   1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2#ifndef _NFNETLINK_QUEUE_H
   3#define _NFNETLINK_QUEUE_H
   4
   5#include <linux/types.h>
   6#include <linux/netfilter/nfnetlink.h>
   7
   8enum nfqnl_msg_types {
   9        NFQNL_MSG_PACKET,               /* packet from kernel to userspace */
  10        NFQNL_MSG_VERDICT,              /* verdict from userspace to kernel */
  11        NFQNL_MSG_CONFIG,               /* connect to a particular queue */
  12        NFQNL_MSG_VERDICT_BATCH,        /* batchv from userspace to kernel */
  13
  14        NFQNL_MSG_MAX
  15};
  16
  17struct nfqnl_msg_packet_hdr {
  18        __be32          packet_id;      /* unique ID of packet in queue */
  19        __be16          hw_protocol;    /* hw protocol (network order) */
  20        __u8    hook;           /* netfilter hook */
  21} __attribute__ ((packed));
  22
  23struct nfqnl_msg_packet_hw {
  24        __be16          hw_addrlen;
  25        __u16   _pad;
  26        __u8    hw_addr[8];
  27};
  28
  29struct nfqnl_msg_packet_timestamp {
  30        __aligned_be64  sec;
  31        __aligned_be64  usec;
  32};
  33
  34enum nfqnl_vlan_attr {
  35        NFQA_VLAN_UNSPEC,
  36        NFQA_VLAN_PROTO,                /* __be16 skb vlan_proto */
  37        NFQA_VLAN_TCI,                  /* __be16 skb htons(vlan_tci) */
  38        __NFQA_VLAN_MAX,
  39};
  40#define NFQA_VLAN_MAX (__NFQA_VLAN_MAX - 1)
  41
  42enum nfqnl_attr_type {
  43        NFQA_UNSPEC,
  44        NFQA_PACKET_HDR,
  45        NFQA_VERDICT_HDR,               /* nfqnl_msg_verdict_hrd */
  46        NFQA_MARK,                      /* __u32 nfmark */
  47        NFQA_TIMESTAMP,                 /* nfqnl_msg_packet_timestamp */
  48        NFQA_IFINDEX_INDEV,             /* __u32 ifindex */
  49        NFQA_IFINDEX_OUTDEV,            /* __u32 ifindex */
  50        NFQA_IFINDEX_PHYSINDEV,         /* __u32 ifindex */
  51        NFQA_IFINDEX_PHYSOUTDEV,        /* __u32 ifindex */
  52        NFQA_HWADDR,                    /* nfqnl_msg_packet_hw */
  53        NFQA_PAYLOAD,                   /* opaque data payload */
  54        NFQA_CT,                        /* nf_conntrack_netlink.h */
  55        NFQA_CT_INFO,                   /* enum ip_conntrack_info */
  56        NFQA_CAP_LEN,                   /* __u32 length of captured packet */
  57        NFQA_SKB_INFO,                  /* __u32 skb meta information */
  58        NFQA_EXP,                       /* nf_conntrack_netlink.h */
  59        NFQA_UID,                       /* __u32 sk uid */
  60        NFQA_GID,                       /* __u32 sk gid */
  61        NFQA_SECCTX,                    /* security context string */
  62        NFQA_VLAN,                      /* nested attribute: packet vlan info */
  63        NFQA_L2HDR,                     /* full L2 header */
  64
  65        __NFQA_MAX
  66};
  67#define NFQA_MAX (__NFQA_MAX - 1)
  68
  69struct nfqnl_msg_verdict_hdr {
  70        __be32 verdict;
  71        __be32 id;
  72};
  73
  74
  75enum nfqnl_msg_config_cmds {
  76        NFQNL_CFG_CMD_NONE,
  77        NFQNL_CFG_CMD_BIND,
  78        NFQNL_CFG_CMD_UNBIND,
  79        NFQNL_CFG_CMD_PF_BIND,
  80        NFQNL_CFG_CMD_PF_UNBIND,
  81};
  82
  83struct nfqnl_msg_config_cmd {
  84        __u8    command;        /* nfqnl_msg_config_cmds */
  85        __u8    _pad;
  86        __be16          pf;             /* AF_xxx for PF_[UN]BIND */
  87};
  88
  89enum nfqnl_config_mode {
  90        NFQNL_COPY_NONE,
  91        NFQNL_COPY_META,
  92        NFQNL_COPY_PACKET,
  93};
  94
  95struct nfqnl_msg_config_params {
  96        __be32          copy_range;
  97        __u8    copy_mode;      /* enum nfqnl_config_mode */
  98} __attribute__ ((packed));
  99
 100
 101enum nfqnl_attr_config {
 102        NFQA_CFG_UNSPEC,
 103        NFQA_CFG_CMD,                   /* nfqnl_msg_config_cmd */
 104        NFQA_CFG_PARAMS,                /* nfqnl_msg_config_params */
 105        NFQA_CFG_QUEUE_MAXLEN,          /* __u32 */
 106        NFQA_CFG_MASK,                  /* identify which flags to change */
 107        NFQA_CFG_FLAGS,                 /* value of these flags (__u32) */
 108        __NFQA_CFG_MAX
 109};
 110#define NFQA_CFG_MAX (__NFQA_CFG_MAX-1)
 111
 112/* Flags for NFQA_CFG_FLAGS */
 113#define NFQA_CFG_F_FAIL_OPEN                    (1 << 0)
 114#define NFQA_CFG_F_CONNTRACK                    (1 << 1)
 115#define NFQA_CFG_F_GSO                          (1 << 2)
 116#define NFQA_CFG_F_UID_GID                      (1 << 3)
 117#define NFQA_CFG_F_SECCTX                       (1 << 4)
 118#define NFQA_CFG_F_MAX                          (1 << 5)
 119
 120/* flags for NFQA_SKB_INFO */
 121/* packet appears to have wrong checksums, but they are ok */
 122#define NFQA_SKB_CSUMNOTREADY (1 << 0)
 123/* packet is GSO (i.e., exceeds device mtu) */
 124#define NFQA_SKB_GSO (1 << 1)
 125/* csum not validated (incoming device doesn't support hw checksum, etc.) */
 126#define NFQA_SKB_CSUM_NOTVERIFIED (1 << 2)
 127
 128#endif /* _NFNETLINK_QUEUE_H */
 129