#ifndef L4PKT_H
#define L4PKT_H
#include <net/rtl/rtl_types.h>
#pragma pack(push,1)
typedef struct icmpHdr_s {
uint8 icmp_type; /* type of message, see below */
uint8 icmp_code; /* type sub code */
uint16 icmp_cksum; /* ones complement cksum of struct */
union {
struct echo_s {
uint16 icd_id;
uint16 icd_seq;
}echo_s;
int8 * gen;
} content;
} icmpHdr_t;
#define ICMP_ECHOREPLY 0 /* echo reply */
#define ICMP_UNREACH 3 /* dest unreachable, codes: */
#define ICMP_UNREACH_NET 0 /* bad net */
#define ICMP_UNREACH_HOST 1 /* bad host */
#define ICMP_UNREACH_PROTOCOL 2 /* bad protocol */
#define ICMP_UNREACH_PORT 3 /* bad port */
#define ICMP_UNREACH_NEEDFRAG 4 /* IP_DF caused drop */
#define ICMP_UNREACH_SRCFAIL 5 /* src route failed */
#define ICMP_UNREACH_NET_UNKNOWN 6 /* unknown net */
#define ICMP_UNREACH_HOST_UNKNOWN 7 /* unknown host */
#define ICMP_UNREACH_ISOLATED 8 /* src host isolated */
#define ICMP_UNREACH_NET_PROHIB 9 /* prohibited access */
#define ICMP_UNREACH_HOST_PROHIB 10 /* ditto */
#define ICMP_UNREACH_TOSNET 11 /* bad tos for net */
#define ICMP_UNREACH_TOSHOST 12 /* bad tos for host */
#define ICMP_UNREACH_FILTER_PROHIB 13 /* admin prohib */
#define ICMP_UNREACH_HOST_PRECEDENCE 14 /* host prec vio. */
#define ICMP_UNREACH_PRECEDENCE_CUTOFF 15 /* prec cutoff */
#define ICMP_SOURCEQUENCH 4 /* packet lost, slow down */
#define ICMP_REDIRECT 5 /* shorter route, codes: */
#define ICMP_REDIRECT_NET 0 /* for network */
#define ICMP_REDIRECT_HOST 1 /* for host */
#define ICMP_REDIRECT_TOSNET 2 /* for tos and net */
#define ICMP_REDIRECT_TOSHOST 3 /* for tos and host */
#define ICMP_ECHO 8 /* echo service */
#define ICMP_ROUTERADVERT 9 /* router advertisement */
#define ICMP_ROUTERSOLICIT 10 /* router solicitation */
#define ICMP_TIMXCEED 11 /* time exceeded, code: */
#define ICMP_TIMXCEED_INTRANS 0 /* ttl==0 in transit */
#define ICMP_TIMXCEED_REASS 1 /* ttl==0 in reass */
#define ICMP_PARAMPROB 12 /* ip header bad */
#define ICMP_PARAMPROB_ERRATPTR 0 /* error at param ptr */
#define ICMP_PARAMPROB_OPTABSENT 1 /* req. opt. absent */
#define ICMP_PARAMPROB_LENGTH 2 /* bad length */
#define ICMP_TSTAMP 13 /* timestamp request */
#define ICMP_TSTAMPREPLY 14 /* timestamp reply */
#define ICMP_IREQ 15 /* information request */
#define ICMP_IREQREPLY 16 /* information reply */
#define ICMP_MASKREQ 17 /* address mask request */
#define ICMP_MASKREPLY 18 /* address mask reply */
#if 0
typedef struct igmpHdr_s {
uint8 igmp_type; /* version & type of IGMP message */
#define IGMP_MEMBERSHIP_QUERY 0x11 /* membership query */
#define IGMP_V1_MEMBERSHIP_REPORT 0x12 /* Ver. 1 membership report */
#define IGMP_V2_MEMBERSHIP_REPORT 0x16 /* Ver. 2 membership report */
#define IGMP_V2_LEAVE_GROUP 0x17 /* Leave-group message */
#define IGMP_DVMRP 0x13 /* DVMRP routing message */
#define IGMP_PIM 0x14 /* PIM routing message */
uint8 igmp_respTime; /* Max response time */
uint16 igmp_cksum; /* IP-style checksum */
uint32 igmp_group; /* group address being reported */
} igmpHdr_t;
#endif
#define IGMP_MINLEN 8
//////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////
// igmp v3 group record
typedef struct igmpGr_s {
uint8 igmp_gr_rt; /* Record Type */
uint8 igmp_gr_auxlen; /* aux data length */
uint16 igmp_gr_nofs; /* number of sources */
uint32 igmp_gr_group; /* group address being reported */
uint32 src_list; /* first entry of src list */
// auxiliary data is unused now
} igmpGr_t;
typedef struct igmpHdr_s {
uint8 igmp_type; /* version & type of IGMP message */
uint8 igmp_respTime; /* subtype for routing msgs */
uint16 igmp_cksum; /* IP-style checksum */
union {
uint32 group; /* group address being presented (v1/v2/v3 query) */
struct igmpRep1_s {
uint16 resv; /* reserved */
uint16 nofg; /* number of group records */
} igmpRep1;
} grp;
union {
struct igmpQ_s {
uint8 rsq; /* 4bit: reserved, 1bit: suppress router-side processing, 3bit: querier's robustness variable*/
uint8 qqic; /* querier's query interval code */
uint16 nofs; /* number of sources */
uint32 src_list; /* first entry of src list */
} igmpQ;
struct igmpRep2_s {
igmpGr_t gr_list; /* first entry of group record */
} igmpRep2;
} un_v3;
#define igmp_group grp.group
#define igmp_QRSQ un_v3.igmpQ.rsq
#define igmp_QQIC un_v3.igmpQ.qqic
#define igmp_QNOFS un_v3.igmpQ.nofs
#define igmp_QSLIST un_v3.igmpQ.src_list
#define igmp_RNOFG grp.igmpRep1.nofg
#define igmp_RRESV grp.igmpRep1.resv
#define igmp_GRLIST un_v3.igmpRep2.gr_list
}igmpHdr_t;
/* IGMP Type */
#define IGMP_MEMBERSHIP_QUERY 0x11 /* igmp group membership query */
#define IGMP_V1_MEMBERSHIP_REPORT 0x12 /* igmp v1 membership report */
#define IGMP_DVMRP 0x13 /* DVMRP */
#define IGMP_PIM 0x14 /* PIM v1 */
#define IGMP_V2_MEMBERSHIP_REPORT 0x16 /* igmp v2 membership report */
#define IGMP_V2_LEAVE_GROUP 0x17 /* igmp v2 leave group message */
#define IGMP_V3_MEMBERSHIP_REPORT 0x22 /* igmp v3 membership report */
/* IGMP v3 Group Record Type */
#define IGMPV3_MODE_ISIN 0x01
#define IGMPV3_MODE_ISEX 0x02
#define IGMPV3_MODE_TOIN 0x03
#define IGMPV3_MODE_TOEX 0x04
#define IGMPV3_MODE_ALLOW 0x05
#define IGMPV3_MODE_BLOCK 0x06
#if 0
#define IGMP_MASK(value, nb) ((nb)>=32 ? (value) : ((1<<(nb))-1) & (value))
#define IGMP_EXP(thresh, nbmant, nbexp, value) \
((value) < (thresh) ? (value) : \
((IGMP_MASK(value, nbmant) | (1<<(nbmant+nbexp))) << \
(IGMP_MASK((value) >> (nbmant), nbexp) + (nbexp))))
#define IGMP_QQIC(value) IGMP_EXP(0x80, 4, 3, value)
#define IGMP_MRC(value) IGMP_EXP(0x80, 4, 3, value)
#endif
//////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////
typedef struct udpHdr_s {
uint16 uh_sport; /* source port */
uint16 uh_dport; /* destination port */
uint16 uh_ulen; /* udp length */
uint16 uh_sum; /* udp checksum */
} udpHdr_t;
typedef struct tcpHdr_s {
uint16 th_sport; /* source port */
uint16 th_dport; /* destination port */
uint32 th_seq; /* sequence number */
uint32 th_ack; /* acknowledgement number */
#ifdef _LITTLE_ENDIAN
uint8 th_x2:4, /* (unused) */
th_off:4; /* data offset */
#else
uint8 th_off:4, /* data offset */
th_x2:4; /* (unused) */
#endif
uint8 th_flags;
#define TH_FIN 0x01
#define TH_SYN 0x02
#define TH_RST 0x04
#define TH_PUSH 0x08
#define TH_ACK 0x10
#define TH_URG 0x20
#define TH_ECE 0x40
#define TH_CWR 0x80
#define TH_FLAGS (TH_FIN|TH_SYN|TH_RST|TH_ACK|TH_URG|TH_ECE|TH_CWR)
uint16 th_win; /* window */
uint16 th_sum; /* checksum */
uint16 th_urp; /* urgent pointer */
}tcpHdr_t;
typedef struct greHdr_s {
uint8 gre_flags_x1;
#define GRE_C_BIT 0x80
#define GRE_R_BIT 0x40
#define GRE_K_BIT 0x20
#define GRE_S_BIT 0x10
#define GRE_s_BIT 0x08
#define GRE_FLAGS_x1 (GRE_C_BIT|GRE_R_BIT|GRE_K_BIT|GRE_S_BIT|GRE_s_BIT)
uint8 gre_flags_x2;
uint16 gre_protocol;
uint16 gre_length;
uint16 gre_callid;
uint32 gre_seqno;
uint32 gre_ackno;
} greHdr_t;
//#define PPTP_GRE_PROTO 0x880b
#pragma pack(pop)
#endif