Wireshark · Wireshark-dev: Re: [Wireshark-dev] roofnet v1

[Nicola Arnoldi <nicola.arnoldi@xxxxxxxxxxxx>]

Was the pcap file enough?

Bye

Nicola

Il giorno mar, 09/01/2007 alle 12.34 +0100, Sebastien Tandel ha scritto:
> Hi,
> 
>    Can you send a pcap file for testing purpose, please?
> 
> 
> Regards,
> 
> Sebastien Tandel
> 
> Nicola Arnoldi wrote:
> > Hi everybody.
> > The great work Sebastien did about Roofnet dissectors was related to
> > Version 2, which is still far from stable.
> > It should be implemented the V 1 as well, which has some differences
> > between V2.
> > I attach the c++ header, hoping it would be sufficient for you to modify
> > the dissector accordingly.
> >
> > Note that ETHTYPES, which in V2 all started with a 6 (6xx) now start
> > with number 9. (9xx)
> >
> > The message I receive when I try to decode V1 datagrams with the old
> > dissector is something like.
> > Bogus IP header, more payload than told by roofnet...and others.
> >
> > Bye.
> >
> > Nicola
> >   
> > ------------------------------------------------------------------------
> >
> > #ifndef CLICK_SRPAKCET_HH
> > #define CLICK_SRPAKCET_HH
> > #include <click/ipaddress.hh>
> > #include <elements/wifi/path.hh>
> > CLICK_DECLS
> >
> > #define max(a, b) ((a) > (b) ? (a) : (b))
> > #define min(a, b) ((a) < (b) ? (a) : (b))
> >
> >
> > enum SRCRPacketType { PT_QUERY = 0x01,
> > 		      PT_REPLY = 0x02,
> >                       PT_TOP5_RESULT = 0x03,
> > 		      PT_DATA  = 0x04,
> >                       PT_GATEWAY = 0x08
> > };
> >
> >
> >
> > enum SRCRPacketFlags {
> >   FLAG_ERROR = (1<<0),
> >   FLAG_UPDATE = (1<<1),
> >   FLAG_TOP5_REQUEST_RESULT = (1<<2),
> >   FLAG_TOP5_BEST_ROUTE = (1<<3),
> >   FLAG_SCHEDULE = (1<<4),
> >   FLAG_SCHEDULE_TOKEN = (1<<5),
> >   FLAG_SCHEDULE_FAKE = (1<<6),
> >   FLAG_ECN = (1<<7)
> > };
> >
> > static const uint8_t _sr_version = 0x0b;
> >
> >
> > // Packet format.
> > CLICK_SIZE_PACKED_STRUCTURE(
> > struct srpacket {,
> >   uint8_t _version; /* see _srcr_version */
> >   uint8_t _type;  /* see enum SRCRPacketType */
> >   uint8_t _nlinks;
> >   uint8_t _next;   // Index of next node who should process this packet.
> >
> >
> >   uint16_t _ttl;
> >   uint16_t _cksum;
> >   uint16_t _flags; 
> >   uint16_t _dlen;
> >
> >   /* PT_QUERY
> >    * _qdst is used for the query destination in control packets
> >    * and a extra 32 bit seq number in data packets
> >    */
> >   uint32_t _qdst;
> >
> >
> >   uint32_t _seq;   // seq number
> >   uint32_t _seq2;  // another seq number
> >
> >   
> >   /* uin32_t ip[_nlinks] */
> >   /* uin32_t metrics[_nlinks] */
> >
> >
> >   /* ip */
> >   /* fwd */
> >   /* rev */
> >   /* seq */
> >   /* ip */
> >
> >   uint32_t _random_from;
> >   uint32_t _random_fwd_metric;
> >   uint32_t _random_rev_metric;
> >   uint32_t _random_seq;
> >   uint16_t _random_age;
> >   uint32_t _random_to;
> >
> >
> >   void set_random_from(IPAddress ip) {
> >     _random_from = ip;
> >   }
> >   void set_random_to(IPAddress ip) {
> >     _random_to = ip;
> >   }
> >   void set_random_fwd_metric(uint32_t m) {
> >     _random_fwd_metric = m;
> >   }
> >
> >   void set_random_rev_metric(uint32_t m) {
> >     _random_rev_metric = m;
> >   }
> >   void set_random_seq(uint32_t s) {
> >     _random_seq = s;
> >   }
> >   void set_random_age(uint32_t s) {
> >     _random_age = s;
> >   }
> >
> >   IPAddress get_random_from() {
> >     return _random_from;
> >   }
> >   IPAddress get_random_to() {
> >     return _random_to;
> >   }
> >   uint32_t get_random_fwd_metric() {
> >     return _random_fwd_metric;
> >   }
> >   uint32_t get_random_rev_metric() {
> >     return _random_rev_metric;
> >   }
> >
> >   uint32_t get_random_seq() {
> >     return _random_seq;
> >   }
> >
> >   uint32_t get_random_age() {
> >     return _random_age;
> >   }
> >
> >
> >   void set_link(int link,
> > 		IPAddress a, IPAddress b, 
> > 		uint32_t fwd, uint32_t rev,
> > 		uint32_t seq,
> > 		uint32_t age) {
> >     
> >     uint32_t *ndx = (uint32_t *) (this+1);
> >     ndx += link * 5;
> >
> >     ndx[0] = a;
> >     ndx[1] = fwd;
> >     ndx[2] = rev;
> >     ndx[3] = seq;
> >     ndx[4] = age;
> >     ndx[5] = b;
> >   }
> >
> >   uint32_t get_link_fwd(int link) {
> >     uint32_t *ndx = (uint32_t *) (this+1);
> >     ndx += link * 5;
> >     return ndx[1];
> >   }
> >   uint32_t get_link_rev(int link) {
> >     uint32_t *ndx = (uint32_t *) (this+1);
> >     ndx += link * 5;
> >     return ndx[2];
> >   }
> >
> >   uint32_t get_link_seq(int link) {
> >     uint32_t *ndx = (uint32_t *) (this+1);
> >     ndx += link * 5;
> >     return ndx[3];
> >   }
> >
> >   uint32_t get_link_age(int link) {
> >     uint32_t *ndx = (uint32_t *) (this+1);
> >     ndx += link * 5;
> >     return ndx[4];
> >   }
> >
> >   IPAddress get_link_node(int link) {
> >     uint32_t *ndx = (uint32_t *) (this+1);
> >     ndx += link * 5;
> >     return ndx[0];
> >   }
> >
> >
> >   void set_link_node(int link, IPAddress ip) {
> >     uint32_t *ndx = (uint32_t *) (this+1);
> >     ndx += link * 5;
> >     ndx[0] = ip;
> >   }
> >
> >
> >
> >
> >   // How long should the packet be?
> >   size_t hlen_wo_data() const { return len_wo_data(_nlinks); }
> >   size_t hlen_with_data() const { return len_with_data(_nlinks, ntohs(_dlen)); }
> >   
> >   static size_t len_wo_data(int nlinks) {
> >     return sizeof(struct srpacket) +
> >       sizeof(uint32_t) + 
> >       (nlinks) * sizeof(uint32_t) * 5;
> >
> >   }
> >   static size_t len_with_data(int nlinks, int dlen) {
> >     return len_wo_data(nlinks) + dlen;
> >   }
> >   
> >   int num_links() {
> >     return _nlinks;
> >   }
> >
> >   int next() {
> >     return _next;
> >   }
> >   Path get_path() {
> >     Path p;
> >     for (int x = 0; x <= num_links(); x++) {
> >       p.push_back(get_link_node(x));
> >     }
> >     return p;
> >   }
> >   void set_data_seq(uint32_t n) {
> >     _qdst = htonl(n);
> >   }
> >   uint32_t data_seq() {
> >     return ntohl(_qdst);
> >   }
> >   void set_seq(uint32_t n) {
> >     _seq = htonl(n);
> >   }
> >   uint32_t seq() {
> >     return ntohl(_seq);
> >   }
> >
> >   void set_seq2(uint32_t n) {
> >     _seq2 = htonl(n);
> >   }
> >   uint32_t seq2() {
> >     return ntohl(_seq2);
> >   }
> >   void set_next(uint8_t n) {
> >     _next = n;
> >   }
> >
> >   void set_num_links(uint8_t n) {
> >     _nlinks = n;
> >   }
> >   void set_data_len(uint16_t len) {
> >     _dlen = htons(len);
> >   }
> >   uint16_t data_len() {
> >     return ntohs(_dlen);
> >   }
> >
> >
> >   void set_flag(uint16_t f) {
> >     uint16_t flags = ntohs(_flags);
> >     _flags = htons(flags | f);
> >   }
> >   
> >   bool flag(int f) {
> >     int x = ntohs(_flags);
> >     return x & f;
> >   }
> >   void unset_flag(uint16_t f) {
> >     uint16_t flags = ntohs(_flags);
> >     _flags = htons(flags & !f);
> >   }
> >
> >
> >   /* remember that if you call this you must have set the number of links in this packet! */
> >   u_char *data() { return (((u_char *)this) + len_wo_data(num_links())); }
> >
> >
> >   void set_checksum() {
> >     unsigned int tlen = 0;
> >     if (_type & PT_DATA) {
> >       tlen = hlen_with_data();
> >     } else {
> >       tlen = hlen_wo_data();
> >     }
> >     _cksum = 0;
> >     _cksum = click_in_cksum((unsigned char *) this, tlen);
> >   }
> > });
> >
> >
> >
> >
> > #ifndef sr_assert
> > #define sr_assert(e) ((e) ? (void) 0 : sr_assert_(__FILE__, __LINE__, #e))
> > #endif /* sr_assert */
> >
> >
> > inline void 
> > sr_assert_(const char *file, int line, const char *expr)
> > {
> >   click_chatter("assertion \"%s\" FAILED: file %s, line %d",
> > 		expr, file, line);
> >
> > #ifdef CLICK_USERLEVEL  
> >   abort();
> > #endif
> >
> > }
> >
> >
> > CLICK_ENDDECLS
> > #endif /* CLICK_SRPACKET_HH */
> >   
> > ------------------------------------------------------------------------
> >
> > _______________________________________________
> > Wireshark-dev mailing list
> > Wireshark-dev@xxxxxxxxxxxxx
> > http://www.wireshark.org/mailman/listinfo/wireshark-dev
> >   
> 
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