/
mld.h
338 lines (281 loc) · 8.4 KB
/
mld.h
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/*
* (c) BayCom GmbH, http://www.baycom.de, info@baycom.de
*
* See the COPYING file for copyright information and
* how to reach the author.
*
*/
#ifndef __MLD_H__
#define __MLD_H__
/* Wrappers so we don't have to change the copied stuff ;) */
#define __u8 uint8_t
#define __u16 uint16_t
/* Booleans */
#define false 0
#define true (!false)
/* Determine Endianness */
#if ! defined __LITTLE_ENDIAN_BITFIELD && ! defined __BIG_ENDIAN_BITFIELD
#if BYTE_ORDER == LITTLE_ENDIAN
/* 1234 machines */
#define __LITTLE_ENDIAN_BITFIELD 1
#elif BYTE_ORDER == BIG_ENDIAN
/* 4321 machines */
#define __BIG_ENDIAN_BITFIELD 1
# define WORDS_BIGENDIAN 1
#elif BYTE_ORDER == PDP_ENDIAN
/* 3412 machines */
#error PDP endianness not supported yet!
#else
#error unknown endianness!
#endif
#endif
/* Per RFC */
struct mld1
{
__u8 type;
__u8 code;
__u16 csum;
__u16 mrc;
__u16 resv1;
struct in6_addr mca;
};
/* The timeout for queries */
/* as per RFC3810 MLDv2 "9.2. Query Interval" */
#define ECMH_SUBSCRIPTION_TIMEOUT 15
/* Robustness Factor, per RFC3810 MLDv2 "9.1. Robustness Variable" */
#define ECMH_ROBUSTNESS_FACTOR 2
/* MLDv2 Report */
#ifndef ICMP6_V2_MEMBERSHIP_REPORT
#define ICMP6_V2_MEMBERSHIP_REPORT 143
#endif
/* MLDv2 Report - Experimental Code */
#ifndef ICMP6_V2_MEMBERSHIP_REPORT_EXP
#define ICMP6_V2_MEMBERSHIP_REPORT_EXP 206
#endif
/* MLDv2 Exclude/Include */
#ifndef MLD2_MODE_IS_INCLUDE
#define MLD2_MODE_IS_INCLUDE 1
#endif
#ifndef MLD2_MODE_IS_EXCLUDE
#define MLD2_MODE_IS_EXCLUDE 2
#endif
#ifndef MLD2_CHANGE_TO_INCLUDE
#define MLD2_CHANGE_TO_INCLUDE 3
#endif
#ifndef MLD2_CHANGE_TO_EXCLUDE
#define MLD2_CHANGE_TO_EXCLUDE 4
#endif
#ifndef MLD2_ALLOW_NEW_SOURCES
#define MLD2_ALLOW_NEW_SOURCES 5
#endif
#ifndef MLD2_BLOCK_OLD_SOURCES
#define MLD2_BLOCK_OLD_SOURCES 6
#endif
#ifndef MLD2_ALL_MCR_INIT
#define MLD2_ALL_MCR_INIT { { { 0xff,0x02,0,0,0,0,0,0,0,0,0,0,0,0,0,0x16 } } }
#endif
#ifndef ICMP6_ROUTER_RENUMBERING
#define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */
#endif
#ifndef ICMP6_NI_QUERY
#define ICMP6_NI_QUERY 139 /* node information request */
#endif
#ifndef ICMP6_NI_REPLY
#define ICMP6_NI_REPLY 140 /* node information reply */
#endif
#ifndef MLD_MTRACE_RESP
#define MLD_MTRACE_RESP 200 /* Mtrace response (to sender) */
#endif
#ifndef MLD_MTRACE
#define MLD_MTRACE 201 /* Mtrace messages */
#endif
#ifndef ICMP6_DST_UNREACH_BEYONDSCOPE
#define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* Beyond scope of source address */
#endif
#ifndef ICMP6_NI_SUCCESS
#define ICMP6_NI_SUCCESS 0 /* node information successful reply */
#endif
#ifndef ICMP6_NI_REFUSED
#define ICMP6_NI_REFUSED 1 /* node information request is refused */
#endif
#ifndef ICMP6_NI_UNKNOWN
#define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */
#endif
#ifndef ICMP6_ROUTER_RENUMBERING_COMMAND
#define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */
#endif
#ifndef ICMP6_ROUTER_RENUMBERING_RESULT
#define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */
#endif
#ifndef ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET
#define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */
#endif
#ifndef ICMP6_MEMBERSHIP_QUERY
#define ICMP6_MEMBERSHIP_QUERY 130
#endif
#ifndef ICMP6_MEMBERSHIP_REPORT
#define ICMP6_MEMBERSHIP_REPORT 131
#endif
#ifndef ICMP6_MEMBERSHIP_REDUCTION
#define ICMP6_MEMBERSHIP_REDUCTION 132
#endif
#ifndef ICMP6_DST_UNREACH_NOTNEIGHBOR
#define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor */
#endif
#ifdef __UCLIBC__
#ifndef IP6OPT_PADN
#define IP6OPT_PADN 1
#endif
#ifndef ip6_ext
struct ip6_ext
{
uint8_t ip6e_nxt;
uint8_t ip6e_len;
};
#endif
#endif
#ifdef WIN32
struct ip6_hdr
{
union
{
struct ip6_hdrctl
{
uint32_t ip6_un1_flow; /* 4 bits version, 8 bits TC,
20 bits flow-ID */
uint16_t ip6_un1_plen; /* payload length */
uint8_t ip6_un1_nxt; /* next header */
uint8_t ip6_un1_hlim; /* hop limit */
} ip6_un1;
uint8_t ip6_un2_vfc; /* 4 bits version, top 4 bits tclass */
} ip6_ctlun;
struct in6_addr ip6_src; /* source address */
struct in6_addr ip6_dst; /* destination address */
};
#define ICMP6_DST_UNREACH 1
#define ICMP6_TIME_EXCEEDED 3
#define ICMP6_PARAM_PROB 4
#define ip6_vfc ip6_ctlun.ip6_un2_vfc
#define ip6_plen ip6_ctlun.ip6_un1.ip6_un1_plen
#define ip6_nxt ip6_ctlun.ip6_un1.ip6_un1_nxt
#define ip6_hlim ip6_ctlun.ip6_un1.ip6_un1_hlim
#define IP6OPT_PADN 1
/* Hop-by-Hop options header. */
struct ip6_hbh
{
uint8_t ip6h_nxt; /* next header. */
uint8_t ip6h_len; /* length in units of 8 octets. */
/* followed by options */
};
#endif
/* From linux/net/ipv6/mcast.c */
/*
* These header formats should be in a separate include file, but icmpv6.h
* doesn't have in6_addr defined in all cases, there is no __u128, and no
* other files reference these.
*
* +-DLS 4/14/03
*
* Multicast Listener Discovery version 2 headers
* Modified as they are where not ANSI C compliant
*/
struct mld2_grec
{
__u8 grec_type;
__u8 grec_auxwords;
__u16 grec_nsrcs;
struct in6_addr grec_mca;
/* struct in6_addr grec_src[0]; */
};
struct mld2_report
{
__u8 type;
__u8 resv1;
__u16 csum;
__u16 resv2;
__u16 ngrec;
/* struct mld2_grec grec[0]; */
};
struct mld2_query
{
__u8 type;
__u8 code;
__u16 csum;
__u16 mrc;
__u16 resv1;
struct in6_addr mca;
#if defined(__LITTLE_ENDIAN_BITFIELD)
uint32_t qrv:3, suppress:1, resv2:4;
#elif defined(__BIG_ENDIAN_BITFIELD)
uint32_t resv2:4, suppress:1, qrv:3;
#else
#error "Please fix <asm/byteorder.h>"
#endif
__u8 qqic;
__u16 nsrcs;
/* struct in6_addr srcs[0]; */
};
#define IGMP6_UNSOLICITED_IVAL (10*HZ)
#define MLD_QRV_DEFAULT 2
#define MLD_V1_SEEN(idev) ((idev)->mc_v1_seen && \
time_before(jiffies, (idev)->mc_v1_seen))
#define MLDV2_MASK(value, nb) ((nb)>=32 ? (value) : ((1<<(nb))-1) & (value))
#define MLDV2_EXP(thresh, nbmant, nbexp, value) \
((value) < (thresh) ? (value) : \
((MLDV2_MASK(value, nbmant) | (1<<(nbmant+nbexp))) << \
(MLDV2_MASK((value) >> (nbmant), nbexp) + (nbexp))))
#define MLDV2_QQIC(value) MLDV2_EXP(0x80, 4, 3, value)
#define MLDV2_MRC(value) MLDV2_EXP(0x8000, 12, 3, value)
#define bool int
#define RAW_RX_BUF_SIZE 1024*1024
struct lookup
{
unsigned int num;
const char *desc;
};
/* Our configuration structure */
struct conf
{
unsigned int maxinterfaces; /* The max number of interfaces the array can hold */
struct intnode *ints; /* The interfaces we are watching */
struct mc_group *groups;
bool quit; /* Global Quit signal */
bool promisc; /* Make interfaces promisc? (To be sure to receive all MLD's) */
bool mode; /* Streamer 0 /Client mode 1 */
uint8_t *buffer; /* Our buffer */
unsigned int bufferlen; /* Length of the buffer */
int rawsocket; /* Single RAW socket for sending and receiving everything */
unsigned int stat_packets_received; /* Number of packets received */
unsigned int stat_packets_sent; /* Number of packets forwarded */
unsigned int stat_bytes_received; /* Number of bytes received */
unsigned int stat_bytes_sent; /* Number of bytes forwarded */
unsigned int stat_icmp_received; /* Number of ICMP's received */
unsigned int stat_icmp_sent; /* Number of ICMP's sent */
unsigned int mca_groups;
unsigned int subscribers;
#ifdef SERVER
tuner_t *tuner_parms;
int tuner_number;
satellite_list_t *sat_list;
int sat_list_num;
int readconfig;
pthread_t mld_timer_thread;
pthread_t collect_stats_thread;
pthread_t stream_tca_thread;
pthread_t stream_tra_thread;
int tca_id;
#endif
pthread_mutex_t lock;
};
/* Global Stuff */
extern struct conf *g_conf;
extern struct lookup mld2_grec_types[];
const char *lookup (struct lookup *l, unsigned int num);
const char *icmpv6_type (unsigned int type);
const char *icmpv6_code (unsigned int type, unsigned int code);
uint16_t ipv6_checksum (const struct ip6_hdr *ip6, uint8_t protocol, const void *data, const uint16_t length);
void sendpacket6 (struct intnode *intn, const struct ip6_hdr *iph, const uint16_t len);
//------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
int send_mldv2_report (struct intnode *intn, int grec_number, struct in6_addr *mcas, int srcn, struct in6_addr *sources, int mode);
int start_mld_daemon (void);
#endif