projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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 | #ifdef __KERNEL__ | |
| 11 | #ifdef DEBUG_IPQ | |
| 12 | #define QDEBUG(x...) printk(KERN_DEBUG ## x) | |
| 13 | #else | |
| 14 | #define QDEBUG(x...) | |
| 15 | #endif /* DEBUG_IPQ */ | |
| 16 | #else | |
| 17 | #include <net/if.h> | |
| 18 | #endif /* ! __KERNEL__ */ | |
| 19 | ||
| 20 | /* Messages sent from kernel */ | |
| 21 | typedef struct ipq_packet_msg { | |
| 22 | unsigned long packet_id; /* ID of queued packet */ | |
| 23 | unsigned long mark; /* Netfilter mark value */ | |
| 24 | long timestamp_sec; /* Packet arrival time (seconds) */ | |
| 25 | long timestamp_usec; /* Packet arrvial time (+useconds) */ | |
| 26 | unsigned int hook; /* Netfilter hook we rode in on */ | |
| 27 | char indev_name[IFNAMSIZ]; /* Name of incoming interface */ | |
| 28 | char outdev_name[IFNAMSIZ]; /* Name of outgoing interface */ | |
| 29 | unsigned short hw_protocol; /* Hardware protocol (network order) */ | |
| 30 | unsigned short hw_type; /* Hardware type */ | |
| 31 | unsigned char hw_addrlen; /* Hardware address length */ | |
| 32 | unsigned char hw_addr[8]; /* Hardware address */ | |
| 33 | size_t data_len; /* Length of packet data */ | |
| 34 | unsigned char payload[0]; /* Optional packet data */ | |
| 35 | } ipq_packet_msg_t; | |
| 36 | ||
| 37 | /* Messages sent from userspace */ | |
| 38 | typedef struct ipq_mode_msg { | |
| 39 | unsigned char value; /* Requested mode */ | |
| 40 | size_t range; /* Optional range of packet requested */ | |
| 41 | } ipq_mode_msg_t; | |
| 42 | ||
| 43 | typedef struct ipq_verdict_msg { | |
| 44 | unsigned int value; /* Verdict to hand to netfilter */ | |
| 45 | unsigned long id; /* Packet ID for this verdict */ | |
| 46 | size_t data_len; /* Length of replacement data */ | |
| 47 | unsigned char payload[0]; /* Optional replacement packet */ | |
| 48 | } ipq_verdict_msg_t; | |
| 49 | ||
| 50 | typedef struct ipq_peer_msg { | |
| 51 | union { | |
| 52 | ipq_verdict_msg_t verdict; | |
| 53 | ipq_mode_msg_t mode; | |
| 54 | } msg; | |
| 55 | } ipq_peer_msg_t; | |
| 56 | ||
| 57 | /* Packet delivery modes */ | |
| 58 | enum { | |
| 59 | IPQ_COPY_NONE, /* Initial mode, packets are dropped */ | |
| 60 | IPQ_COPY_META, /* Copy metadata */ | |
| 61 | IPQ_COPY_PACKET /* Copy metadata + packet (range) */ | |
| 62 | }; | |
| 63 | #define IPQ_COPY_MAX IPQ_COPY_PACKET | |
| 64 | ||
| 65 | /* Types of messages */ | |
| 66 | #define IPQM_BASE 0x10 /* standard netlink messages below this */ | |
| 67 | #define IPQM_MODE (IPQM_BASE + 1) /* Mode request from peer */ | |
| 68 | #define IPQM_VERDICT (IPQM_BASE + 2) /* Verdict from peer */ | |
| 69 | #define IPQM_PACKET (IPQM_BASE + 3) /* Packet from kernel */ | |
| 70 | #define IPQM_MAX (IPQM_BASE + 4) | |
| 71 | ||
| 72 | #endif /*_IP_QUEUE_H*/ |