openwrt/package/nvram/src/wl_linux.c

   1 /*
   2  * Wireless network adapter utilities (linux-specific)
   3  *
   4  * Copyright 2004, Broadcom Corporation
   5  * All Rights Reserved.
   6  *
   7  * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
   8  * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
   9  * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
  10  * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
  11  *
  12  * $Id$
  13  */
  14
  15 #include <stdio.h>
  16 #include <unistd.h>
  17 #include <string.h>
  18 #include <errno.h>
  19 #include <sys/ioctl.h>
  20 #include <net/if.h>
  21
  22 #include <typedefs.h>
  23 #include <wlioctl.h>
  24 #include <wlutils.h>
  25
  26 int
  27 wl_ioctl(char *name, int cmd, void *buf, int len)
  28 {
  29         struct ifreq ifr;
  30         wl_ioctl_t ioc;
  31         int ret = 0;
  32         int s;
  33
  34         /* open socket to kernel */
  35         if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
  36                 perror("socket");
  37                 return errno;
  38         }
  39
  40         /* do it */
  41         ioc.cmd = cmd;
  42         ioc.buf = buf;
  43         ioc.len = len;
  44         strncpy(ifr.ifr_name, name, IFNAMSIZ);
  45         ifr.ifr_data = (caddr_t) &ioc;
  46         if ((ret = ioctl(s, SIOCDEVPRIVATE, &ifr)) < 0)
  47                 if (cmd != WLC_GET_MAGIC)
  48                         perror(ifr.ifr_name);
  49
  50         /* cleanup */
  51         close(s);
  52         return ret;
  53 }
  54
  55 int
  56 wl_hwaddr(char *name, unsigned char *hwaddr)
  57 {
  58         struct ifreq ifr;
  59         int ret = 0;
  60         int s;
  61
  62         /* open socket to kernel */
  63         if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
  64                 perror("socket");
  65                 return errno;
  66         }
  67
  68         /* do it */
  69         strncpy(ifr.ifr_name, name, IFNAMSIZ);
  70         if ((ret = ioctl(s, SIOCGIFHWADDR, &ifr)) == 0)
  71                 memcpy(hwaddr, ifr.ifr_hwaddr.sa_data, ETHER_ADDR_LEN);
  72
  73         /* cleanup */
  74         close(s);
  75         return ret;
  76 }
  77