nl80211: Debug print channel list

This makes it a bit easier to figure out how channel list update from
the kernel is taken into use.

Signed-off-by: Jouni Malinen <j@w1.fi>

diff --git a/src/drivers/driver_nl80211_capa.c b/src/drivers/driver_nl80211_capa.c
index bc2f9acf040dce74a08e6a8265e763ec012f1f83..9039f57c234d5cac092aa970226f33d34033422d 100644 (file)
--- a/src/drivers/driver_nl80211_capa.c
+++ b/src/drivers/driver_nl80211_capa.c
@@ -2066,6 +2066,61 @@ static int nl80211_set_regulatory_flags(struct wpa_driver_nl80211_data *drv,
 }
 
 
+static const char * modestr(enum hostapd_hw_mode mode)
+{
+       switch (mode) {
+       case HOSTAPD_MODE_IEEE80211B:
+               return "802.11b";
+       case HOSTAPD_MODE_IEEE80211G:
+               return "802.11g";
+       case HOSTAPD_MODE_IEEE80211A:
+               return "802.11a";
+       case HOSTAPD_MODE_IEEE80211AD:
+               return "802.11ad";
+       default:
+               return "?";
+       }
+}
+
+
+static void nl80211_dump_chan_list(struct hostapd_hw_modes *modes,
+                                  u16 num_modes)
+{
+       int i;
+
+       if (!modes)
+               return;
+
+       for (i = 0; i < num_modes; i++) {
+               struct hostapd_hw_modes *mode = &modes[i];
+               char str[200];
+               char *pos = str;
+               char *end = pos + sizeof(str);
+               int j, res;
+
+               for (j = 0; j < mode->num_channels; j++) {
+                       struct hostapd_channel_data *chan = &mode->channels[j];
+
+                       res = os_snprintf(pos, end - pos, " %d%s%s%s",
+                                         chan->freq,
+                                         (chan->flag & HOSTAPD_CHAN_DISABLED) ?
+                                         "[DISABLED]" : "",
+                                         (chan->flag & HOSTAPD_CHAN_NO_IR) ?
+                                         "[NO_IR]" : "",
+                                         (chan->flag & HOSTAPD_CHAN_RADAR) ?
+                                         "[RADAR]" : "");
+                       if (os_snprintf_error(end - pos, res))
+                               break;
+                       pos += res;
+               }
+
+               *pos = '\0';
+               wpa_printf(MSG_DEBUG, "nl80211: Mode IEEE %s:%s",
+                          modestr(mode->mode), str);
+       }
+}
+
+
 struct hostapd_hw_modes *
 nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags,
                            u8 *dfs_domain)
@@ -2097,6 +2152,8 @@ nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags,
        }
 
        if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0) {
+               struct hostapd_hw_modes *modes;
+
                nl80211_set_regulatory_flags(drv, &result);
                if (result.failed) {
                        int i;
@@ -2112,8 +2169,10 @@ nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags,
 
                *dfs_domain = result.dfs_domain;
 
-               return wpa_driver_nl80211_postprocess_modes(result.modes,
-                                                           num_modes);
+               modes = wpa_driver_nl80211_postprocess_modes(result.modes,
+                                                            num_modes);
+               nl80211_dump_chan_list(modes, *num_modes);
+               return modes;
        }
 
        return NULL;