include/uapi/linux/netfilter/nfnetlink_queue.h

   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
   8 enum 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
  17 struct 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
  23 struct nfqnl_msg_packet_hw {
  24         __be16          hw_addrlen;
  25         __u16   _pad;
  26         __u8    hw_addr[8];
  27 };
  28
  29 struct nfqnl_msg_packet_timestamp {
  30         __aligned_be64  sec;
  31         __aligned_be64  usec;
  32 };
  33
  34 enum 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
  42 enum 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
  69 struct nfqnl_msg_verdict_hdr {
  70         __be32 verdict;
  71         __be32 id;
  72 };
  73
  74
  75 enum 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
  83 struct 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
  89 enum nfqnl_config_mode {
  90         NFQNL_COPY_NONE,
  91         NFQNL_COPY_META,
  92         NFQNL_COPY_PACKET,
  93 };
  94
  95 struct nfqnl_msg_config_params {
  96         __be32          copy_range;
  97         __u8    copy_mode;      /* enum nfqnl_config_mode */
  98 } __attribute__ ((packed));
  99
 100
 101 enum 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 */