phy.c

   1 #include <stdbool.h>
   2 #include <errno.h>
   3 #include <net/if.h>
   4
   5 #include <netlink/genl/genl.h>
   6 #include <netlink/genl/family.h>
   7 #include <netlink/genl/ctrl.h>
   8 #include <netlink/msg.h>
   9 #include <netlink/attr.h>
  10
  11 #include "nl80211.h"
  12 #include "iw.h"
  13
  14 static int handle_name(struct nl_cb *cb,
  15                        struct nl_msg *msg,
  16                        int argc, char **argv)
  17 {
  18         if (argc != 1)
  19                 return 1;
  20
  21         NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, *argv);
  22
  23         return 0;
  24  nla_put_failure:
  25         return -ENOBUFS;
  26 }
  27 COMMAND(set, name, "<new name>", NL80211_CMD_SET_WIPHY, 0, CIB_PHY, handle_name);
  28
  29 static int handle_freqchan(struct nl_msg *msg, bool chan,
  30                            int argc, char **argv)
  31 {
  32         static const struct {
  33                 const char *name;
  34                 unsigned int val;
  35         } htmap[] = {
  36                 { .name = "HT20", .val = NL80211_SEC_CHAN_DISABLED, },
  37                 { .name = "HT40+", .val = NL80211_SEC_CHAN_ABOVE, },
  38                 { .name = "HT40-", .val = NL80211_SEC_CHAN_BELOW, },
  39         };
  40         unsigned int htval = NL80211_SEC_CHAN_NO_HT;
  41         unsigned int freq;
  42         int i;
  43
  44         if (!argc || argc > 2)
  45                 return 1;
  46
  47         if (argc == 2) {
  48                 for (i = 0; i < sizeof(htmap)/sizeof(htmap[0]); i++) {
  49                         if (strcasecmp(htmap[i].name, argv[1]) == 0) {
  50                                 htval = htmap[i].val;
  51                                 break;
  52                         }
  53                 }
  54                 if (htval == NL80211_SEC_CHAN_NO_HT)
  55                         return 1;
  56         }
  57
  58         freq = strtoul(argv[0], NULL, 10);
  59         if (chan)
  60                 freq = ieee80211_channel_to_frequency(freq);
  61
  62         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
  63         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_SEC_CHAN_OFFSET, htval);
  64
  65         return 0;
  66  nla_put_failure:
  67         return -ENOBUFS;
  68 }
  69
  70 static int handle_freq(struct nl_cb *cb, struct nl_msg *msg,
  71                        int argc, char **argv)
  72 {
  73         return handle_freqchan(msg, false, argc, argv);
  74 }
  75 COMMAND(set, freq, "<freq> [HT20|HT40+|HT40-]",
  76         NL80211_CMD_SET_WIPHY, 0, CIB_PHY, handle_freq);
  77 COMMAND(set, freq, "<freq> [HT20|HT40+|HT40-]",
  78         NL80211_CMD_SET_WIPHY, 0, CIB_NETDEV, handle_freq);
  79
  80 static int handle_chan(struct nl_cb *cb, struct nl_msg *msg,
  81                        int argc, char **argv)
  82 {
  83         return handle_freqchan(msg, true, argc, argv);
  84 }
  85 COMMAND(set, channel, "<channel> [HT20|HT40+|HT40-]",
  86         NL80211_CMD_SET_WIPHY, 0, CIB_PHY, handle_chan);
  87 COMMAND(set, channel, "<channel> [HT20|HT40+|HT40-]",
  88         NL80211_CMD_SET_WIPHY, 0, CIB_NETDEV, handle_chan);