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ip_queue.h
Package: linux-2.4.20.tar.gz [view]
Upload User: jlfgdled
Upload Date: 2013-04-10
Package Size: 33168k
Code Size: 2k
Category:
Linux-Unix program
Development Platform:
Unix_Linux
- /*
- * This is a module which is used for queueing IPv4 packets and
- * communicating with userspace via netlink.
- *
- * (C) 2000 James Morris, this code is GPL.
- */
- #ifndef _IP_QUEUE_H
- #define _IP_QUEUE_H
- #ifdef __KERNEL__
- #ifdef DEBUG_IPQ
- #define QDEBUG(x...) printk(KERN_DEBUG ## x)
- #else
- #define QDEBUG(x...)
- #endif /* DEBUG_IPQ */
- #else
- #include <net/if.h>
- #endif /* ! __KERNEL__ */
- /* Messages sent from kernel */
- typedef struct ipq_packet_msg {
- unsigned long packet_id; /* ID of queued packet */
- unsigned long mark; /* Netfilter mark value */
- long timestamp_sec; /* Packet arrival time (seconds) */
- long timestamp_usec; /* Packet arrvial time (+useconds) */
- unsigned int hook; /* Netfilter hook we rode in on */
- char indev_name[IFNAMSIZ]; /* Name of incoming interface */
- char outdev_name[IFNAMSIZ]; /* Name of outgoing interface */
- unsigned short hw_protocol; /* Hardware protocol (network order) */
- unsigned short hw_type; /* Hardware type */
- unsigned char hw_addrlen; /* Hardware address length */
- unsigned char hw_addr[8]; /* Hardware address */
- size_t data_len; /* Length of packet data */
- unsigned char payload[0]; /* Optional packet data */
- } ipq_packet_msg_t;
- /* Messages sent from userspace */
- typedef struct ipq_mode_msg {
- unsigned char value; /* Requested mode */
- size_t range; /* Optional range of packet requested */
- } ipq_mode_msg_t;
- typedef struct ipq_verdict_msg {
- unsigned int value; /* Verdict to hand to netfilter */
- unsigned long id; /* Packet ID for this verdict */
- size_t data_len; /* Length of replacement data */
- unsigned char payload[0]; /* Optional replacement packet */
- } ipq_verdict_msg_t;
- typedef struct ipq_peer_msg {
- union {
- ipq_verdict_msg_t verdict;
- ipq_mode_msg_t mode;
- } msg;
- } ipq_peer_msg_t;
- /* Packet delivery modes */
- enum {
- IPQ_COPY_NONE, /* Initial mode, packets are dropped */
- IPQ_COPY_META, /* Copy metadata */
- IPQ_COPY_PACKET /* Copy metadata + packet (range) */
- };
- #define IPQ_COPY_MAX IPQ_COPY_PACKET
- /* Types of messages */
- #define IPQM_BASE 0x10 /* standard netlink messages below this */
- #define IPQM_MODE (IPQM_BASE + 1) /* Mode request from peer */
- #define IPQM_VERDICT (IPQM_BASE + 2) /* Verdict from peer */
- #define IPQM_PACKET (IPQM_BASE + 3) /* Packet from kernel */
- #define IPQM_MAX (IPQM_BASE + 4)
- #endif /*_IP_QUEUE_H*/