src/netdev.h

   1 /*
   2  * netsniff-ng - the packet sniffing beast
   3  * By Daniel Borkmann <daniel@netsniff-ng.org>
   4  * Copyright 2009, 2010 Daniel Borkmann.
   5  * Copyright 2009, 2010 Emmanuel Roullit.
   6  * Subject to the GPL, version 2.
   7  */
   8
   9 #ifndef NETDEV_H
  10 #define NETDEV_H
  11
  12 #include <errno.h>
  13 #include <sys/socket.h>
  14 #include <unistd.h>
  15 #include <linux/ethtool.h>
  16 #include <linux/if.h>
  17 #include <linux/wireless.h>
  18
  19 #include "die.h"
  20
  21 extern int af_socket(int af);
  22 extern int af_raw_socket(int af, int proto);
  23 extern int pf_socket(void);
  24 extern int wireless_bitrate(const char *ifname);
  25 extern int wireless_essid(const char *ifname, char *essid);
  26 extern int adjust_dbm_level(int dbm_val);
  27 extern int dbm_to_mwatt(const int in);
  28 extern int wireless_tx_power(const char *ifname);
  29 extern int wireless_sigqual(const char *ifname, struct iw_statistics *stats);
  30 extern int wireless_rangemax_sigqual(const char *ifname);
  31 extern int ethtool_bitrate(const char *ifname);
  32 extern int ethtool_drvinf(const char *ifname, struct ethtool_drvinfo *drvinf);
  33 extern int device_bitrate(const char *ifname);
  34 extern int device_mtu(const char *ifname);
  35 extern int device_address(const char *ifname, int af,
  36                           struct sockaddr_storage *ss);
  37 extern int device_irq_number(const char *ifname);
  38 extern int device_bind_irq_to_cpu(int irq, int cpu);
  39 extern void sock_print_net_stats(int sock);
  40 extern int device_ifindex(const char *ifname);
  41 extern short device_get_flags(const char *ifname);
  42 extern void device_set_flags(const char *ifname, const short flags);
  43 extern int set_nonblocking(int fd);
  44 extern int set_nonblocking_sloppy(int fd);
  45 extern int set_reuseaddr(int fd);
  46
  47
  48 static inline short enter_promiscuous_mode(char *ifname)
  49 {
  50         if (!strncmp("any", ifname, strlen("any")))
  51                 return 0;
  52
  53         short ifflags = device_get_flags(ifname);
  54         device_set_flags(ifname, ifflags | IFF_PROMISC);
  55
  56         return ifflags;
  57 }
  58
  59 static inline void leave_promiscuous_mode(char *ifname, short oldflags)
  60 {
  61         if (!strncmp("any", ifname, strlen("any")))
  62                 return;
  63
  64         device_set_flags(ifname, oldflags);
  65 }
  66
  67 static inline int device_up(char *ifname)
  68 {
  69         if (!ifname)
  70                 return -EINVAL;
  71         if (!strncmp("any", ifname, strlen("any")))
  72                 return 1;
  73         return (device_get_flags(ifname) & IFF_UP) == IFF_UP;
  74 }
  75
  76 static inline int device_running(char *ifname)
  77 {
  78         if (!ifname)
  79                 return -EINVAL;
  80         if (!strncmp("any", ifname, strlen("any")))
  81                 return 1;
  82         return (device_get_flags(ifname) & IFF_RUNNING) == IFF_RUNNING;
  83 }
  84
  85 static inline int device_up_and_running(char *ifname)
  86 {
  87         if (!ifname)
  88                 return -EINVAL;
  89         if (!strncmp("any", ifname, strlen("any")))
  90                 return 1;
  91         return (device_get_flags(ifname) & (IFF_UP | IFF_RUNNING)) ==
  92                (IFF_UP | IFF_RUNNING);
  93 }
  94
  95 #endif /* NETDEV_H */