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