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 nl80211_state *state,
  15                        struct nl_cb *cb,
  16                        struct nl_msg *msg,
  17                        int argc, char **argv)
  18 {
  19         if (argc != 1)
  20                 return 1;
  21
  22         NLA_PUT_STRING(msg, NL80211_ATTR_WIPHY_NAME, *argv);
  23
  24         return 0;
  25  nla_put_failure:
  26         return -ENOBUFS;
  27 }
  28 COMMAND(set, name, "<new name>", NL80211_CMD_SET_WIPHY, 0, CIB_PHY, handle_name,
  29         "Rename this wireless device.");
  30
  31 static int handle_freqchan(struct nl_msg *msg, bool chan,
  32                            int argc, char **argv)
  33 {
  34         static const struct {
  35                 const char *name;
  36                 unsigned int val;
  37         } htmap[] = {
  38                 { .name = "HT20", .val = NL80211_CHAN_HT20, },
  39                 { .name = "HT40+", .val = NL80211_CHAN_HT40PLUS, },
  40                 { .name = "HT40-", .val = NL80211_CHAN_HT40MINUS, },
  41         };
  42         unsigned int htval = NL80211_CHAN_NO_HT;
  43         unsigned int freq;
  44         int i;
  45
  46         if (!argc || argc > 2)
  47                 return 1;
  48
  49         if (argc == 2) {
  50                 for (i = 0; i < ARRAY_SIZE(htmap); i++) {
  51                         if (strcasecmp(htmap[i].name, argv[1]) == 0) {
  52                                 htval = htmap[i].val;
  53                                 break;
  54                         }
  55                 }
  56                 if (htval == NL80211_CHAN_NO_HT)
  57                         return 1;
  58         }
  59
  60         freq = strtoul(argv[0], NULL, 10);
  61         if (chan)
  62                 freq = ieee80211_channel_to_frequency(freq);
  63
  64         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
  65         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, htval);
  66
  67         return 0;
  68  nla_put_failure:
  69         return -ENOBUFS;
  70 }
  71
  72 static int handle_freq(struct nl80211_state *state,
  73                        struct nl_cb *cb, struct nl_msg *msg,
  74                        int argc, char **argv)
  75 {
  76         return handle_freqchan(msg, false, argc, argv);
  77 }
  78 COMMAND(set, freq, "<freq> [HT20|HT40+|HT40-]",
  79         NL80211_CMD_SET_WIPHY, 0, CIB_PHY, handle_freq,
  80         "Set frequency/channel the hardware is using, including HT\n"
  81         "configuration.");
  82 COMMAND(set, freq, "<freq> [HT20|HT40+|HT40-]",
  83         NL80211_CMD_SET_WIPHY, 0, CIB_NETDEV, handle_freq, NULL);
  84
  85 static int handle_chan(struct nl80211_state *state,
  86                        struct nl_cb *cb, struct nl_msg *msg,
  87                        int argc, char **argv)
  88 {
  89         return handle_freqchan(msg, true, argc, argv);
  90 }
  91 COMMAND(set, channel, "<channel> [HT20|HT40+|HT40-]",
  92         NL80211_CMD_SET_WIPHY, 0, CIB_PHY, handle_chan, NULL);
  93 COMMAND(set, channel, "<channel> [HT20|HT40+|HT40-]",
  94         NL80211_CMD_SET_WIPHY, 0, CIB_NETDEV, handle_chan, NULL);