include/linux/netfilter/nfnetlink_queue.h

   1 #ifndef _NFNETLINK_QUEUE_H
   2 #define _NFNETLINK_QUEUE_H
   3
   4 #include <linux/types.h>
   5 #include <linux/netfilter/nfnetlink.h>
   6
   7 enum 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
  12         NFQNL_MSG_MAX
  13 };
  14
  15 struct nfqnl_msg_packet_hdr {
  16         u_int32_t       packet_id;      /* unique ID of packet in queue */
  17         u_int16_t       hw_protocol;    /* hw protocol (network order) */
  18         u_int8_t        hook;           /* netfilter hook */
  19 } __attribute__ ((packed));
  20
  21 struct nfqnl_msg_packet_hw {
  22         u_int16_t       hw_addrlen;
  23         u_int16_t       _pad;
  24         u_int8_t        hw_addr[8];
  25 } __attribute__ ((packed));
  26
  27 struct nfqnl_msg_packet_timestamp {
  28         aligned_u64     sec;
  29         aligned_u64     usec;
  30 } __attribute__ ((packed));
  31
  32 enum nfqnl_attr_type {
  33         NFQA_UNSPEC,
  34         NFQA_PACKET_HDR,
  35         NFQA_VERDICT_HDR,               /* nfqnl_msg_verdict_hrd */
  36         NFQA_MARK,                      /* u_int32_t nfmark */
  37         NFQA_TIMESTAMP,                 /* nfqnl_msg_packet_timestamp */
  38         NFQA_IFINDEX_INDEV,             /* u_int32_t ifindex */
  39         NFQA_IFINDEX_OUTDEV,            /* u_int32_t ifindex */
  40         NFQA_IFINDEX_PHYSINDEV,         /* u_int32_t ifindex */
  41         NFQA_IFINDEX_PHYSOUTDEV,        /* u_int32_t ifindex */
  42         NFQA_HWADDR,                    /* nfqnl_msg_packet_hw */
  43         NFQA_PAYLOAD,                   /* opaque data payload */
  44
  45         __NFQA_MAX
  46 };
  47 #define NFQA_MAX (__NFQA_MAX - 1)
  48
  49 struct nfqnl_msg_verdict_hdr {
  50         u_int32_t verdict;
  51         u_int32_t id;
  52 } __attribute__ ((packed));
  53
  54
  55 enum nfqnl_msg_config_cmds {
  56         NFQNL_CFG_CMD_NONE,
  57         NFQNL_CFG_CMD_BIND,
  58         NFQNL_CFG_CMD_UNBIND,
  59         NFQNL_CFG_CMD_PF_BIND,
  60         NFQNL_CFG_CMD_PF_UNBIND,
  61 };
  62
  63 struct nfqnl_msg_config_cmd {
  64         u_int8_t        command;        /* nfqnl_msg_config_cmds */
  65         u_int8_t        _pad;
  66         u_int16_t       pf;             /* AF_xxx for PF_[UN]BIND */
  67 } __attribute__ ((packed));
  68
  69 enum nfqnl_config_mode {
  70         NFQNL_COPY_NONE,
  71         NFQNL_COPY_META,
  72         NFQNL_COPY_PACKET,
  73 };
  74
  75 struct nfqnl_msg_config_params {
  76         u_int32_t       copy_range;
  77         u_int8_t        copy_mode;      /* enum nfqnl_config_mode */
  78 } __attribute__ ((packed));
  79
  80
  81 enum nfqnl_attr_config {
  82         NFQA_CFG_UNSPEC,
  83         NFQA_CFG_CMD,                   /* nfqnl_msg_config_cmd */
  84         NFQA_CFG_PARAMS,                /* nfqnl_msg_config_params */
  85         __NFQA_CFG_MAX
  86 };
  87 #define NFQA_CFG_MAX (__NFQA_CFG_MAX-1)
  88
  89 #endif /* _NFNETLINK_QUEUE_H */