release/src-rt-6.x.4708/toolchains/hndtools-arm-linux-2.6.36-uclibc-4.5.3/arm-brcm-linux-uclibcgnueabi/sysroot/usr/include/linux/netfilter_ipv4/ip_queue.h

   1 /*
   2  * This is a module which is used for queueing IPv4 packets and
   3  * communicating with userspace via netlink.
   4  *
   5  * (C) 2000 James Morris, this code is GPL.
   6  */
   7 #ifndef _IP_QUEUE_H
   8 #define _IP_QUEUE_H
   9
  10 #include <net/if.h>
  11
  12 /* Messages sent from kernel */
  13 typedef struct ipq_packet_msg {
  14         unsigned long packet_id;        /* ID of queued packet */
  15         unsigned long mark;             /* Netfilter mark value */
  16         long timestamp_sec;             /* Packet arrival time (seconds) */
  17         long timestamp_usec;            /* Packet arrvial time (+useconds) */
  18         unsigned int hook;              /* Netfilter hook we rode in on */
  19         char indev_name[IFNAMSIZ];      /* Name of incoming interface */
  20         char outdev_name[IFNAMSIZ];     /* Name of outgoing interface */
  21         __be16 hw_protocol;             /* Hardware protocol (network order) */
  22         unsigned short hw_type;         /* Hardware type */
  23         unsigned char hw_addrlen;       /* Hardware address length */
  24         unsigned char hw_addr[8];       /* Hardware address */
  25         size_t data_len;                /* Length of packet data */
  26         unsigned char payload[0];       /* Optional packet data */
  27 } ipq_packet_msg_t;
  28
  29 /* Messages sent from userspace */
  30 typedef struct ipq_mode_msg {
  31         unsigned char value;            /* Requested mode */
  32         size_t range;                   /* Optional range of packet requested */
  33 } ipq_mode_msg_t;
  34
  35 typedef struct ipq_verdict_msg {
  36         unsigned int value;             /* Verdict to hand to netfilter */
  37         unsigned long id;               /* Packet ID for this verdict */
  38         size_t data_len;                /* Length of replacement data */
  39         unsigned char payload[0];       /* Optional replacement packet */
  40 } ipq_verdict_msg_t;
  41
  42 typedef struct ipq_peer_msg {
  43         union {
  44                 ipq_verdict_msg_t verdict;
  45                 ipq_mode_msg_t mode;
  46         } msg;
  47 } ipq_peer_msg_t;
  48
  49 /* Packet delivery modes */
  50 enum {
  51         IPQ_COPY_NONE,          /* Initial mode, packets are dropped */
  52         IPQ_COPY_META,          /* Copy metadata */
  53         IPQ_COPY_PACKET         /* Copy metadata + packet (range) */
  54 };
  55 #define IPQ_COPY_MAX IPQ_COPY_PACKET
  56
  57 /* Types of messages */
  58 #define IPQM_BASE       0x10    /* standard netlink messages below this */
  59 #define IPQM_MODE       (IPQM_BASE + 1)         /* Mode request from peer */
  60 #define IPQM_VERDICT    (IPQM_BASE + 2)         /* Verdict from peer */
  61 #define IPQM_PACKET     (IPQM_BASE + 3)         /* Packet from kernel */
  62 #define IPQM_MAX        (IPQM_BASE + 4)
  63
  64 #endif /*_IP_QUEUE_H*/