LXR linux/include/uapi/linux/netfilter/nf

   1#ifndef _NF_OSF_H
   2#define _NF_OSF_H
   3
   4#include <linux/types.h>
   5
   6#define MAXGENRELEN     32
   7
   8#define NF_OSF_GENRE    (1 << 0)
   9#define NF_OSF_TTL      (1 << 1)
  10#define NF_OSF_LOG      (1 << 2)
  11#define NF_OSF_INVERT   (1 << 3)
  12
  13#define NF_OSF_LOGLEVEL_ALL             0       /* log all matched fingerprints */
  14#define NF_OSF_LOGLEVEL_FIRST           1       /* log only the first matced fingerprint */
  15#define NF_OSF_LOGLEVEL_ALL_KNOWN       2       /* do not log unknown packets */
  16
  17#define NF_OSF_TTL_TRUE                 0       /* True ip and fingerprint TTL comparison */
  18
  19/* Do not compare ip and fingerprint TTL at all */
  20#define NF_OSF_TTL_NOCHECK              2
  21
  22/* Wildcard MSS (kind of).
  23 * It is used to implement a state machine for the different wildcard values
  24 * of the MSS and window sizes.
  25 */
  26struct nf_osf_wc {
  27        __u32   wc;
  28        __u32   val;
  29};
  30
  31/* This struct represents IANA options
  32 * http://www.iana.org/assignments/tcp-parameters
  33 */
  34struct nf_osf_opt {
  35        __u16                   kind, length;
  36        struct nf_osf_wc        wc;
  37};
  38
  39struct nf_osf_info {
  40        char    genre[MAXGENRELEN];
  41        __u32   len;
  42        __u32   flags;
  43        __u32   loglevel;
  44        __u32   ttl;
  45};
  46
  47struct nf_osf_user_finger {
  48        struct nf_osf_wc        wss;
  49
  50        __u8    ttl, df;
  51        __u16   ss, mss;
  52        __u16   opt_num;
  53
  54        char    genre[MAXGENRELEN];
  55        char    version[MAXGENRELEN];
  56        char    subtype[MAXGENRELEN];
  57
  58        /* MAX_IPOPTLEN is maximum if all options are NOPs or EOLs */
  59        struct nf_osf_opt       opt[MAX_IPOPTLEN];
  60};
  61
  62struct nf_osf_nlmsg {
  63        struct nf_osf_user_finger       f;
  64        struct iphdr                    ip;
  65        struct tcphdr                   tcp;
  66};
  67
  68/* Defines for IANA option kinds */
  69enum iana_options {
  70        OSFOPT_EOL = 0,         /* End of options */
  71        OSFOPT_NOP,             /* NOP */
  72        OSFOPT_MSS,             /* Maximum segment size */
  73        OSFOPT_WSO,             /* Window scale option */
  74        OSFOPT_SACKP,           /* SACK permitted */
  75        OSFOPT_SACK,            /* SACK */
  76        OSFOPT_ECHO,
  77        OSFOPT_ECHOREPLY,
  78        OSFOPT_TS,              /* Timestamp option */
  79        OSFOPT_POCP,            /* Partial Order Connection Permitted */
  80        OSFOPT_POSP,            /* Partial Order Service Profile */
  81
  82        /* Others are not used in the current OSF */
  83        OSFOPT_EMPTY = 255,
  84};
  85
  86#endif /* _NF_OSF_H */
  87