wext: Add signal_poll callback

Add a basic implementation of a signal_poll callback for wext drivers.

Signed-off-by: Jean-Marie Lemetayer <jeanmarie.lemetayer@gmail.com>

diff --git a/src/drivers/driver_wext.c b/src/drivers/driver_wext.c
index a4f9cec7a807575a4773b7459ef60e569ebc7682..459ac4816a05488b2f0d598fe68d3df62659dafd 100644 (file)
--- a/src/drivers/driver_wext.c
+++ b/src/drivers/driver_wext.c
@@ -2320,6 +2320,37 @@ static const char * wext_get_radio_name(void *priv)
 }
 
 
+static int wpa_driver_wext_signal_poll(void *priv, struct wpa_signal_info *si)
+{
+       struct wpa_driver_wext_data *drv = priv;
+       struct iw_statistics stats;
+       struct iwreq iwr;
+
+       os_memset(si, 0, sizeof(*si));
+       si->current_signal = -9999;
+       si->current_noise = 9999;
+       si->chanwidth = CHAN_WIDTH_UNKNOWN;
+
+       os_memset(&iwr, 0, sizeof(iwr));
+       os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
+       iwr.u.data.pointer = (caddr_t) &stats;
+       iwr.u.data.length = sizeof(stats);
+       iwr.u.data.flags = 1;
+
+       if (ioctl(drv->ioctl_sock, SIOCGIWSTATS, &iwr) < 0) {
+               wpa_printf(MSG_ERROR, "WEXT: SIOCGIWSTATS: %s",
+                          strerror(errno));
+               return -1;
+       }
+
+       si->current_signal = stats.qual.level -
+               ((stats.qual.updated & IW_QUAL_DBM) ? 0x100 : 0);
+       si->current_noise = stats.qual.noise -
+               ((stats.qual.updated & IW_QUAL_DBM) ? 0x100 : 0);
+       return 0;
+}
+
+
 const struct wpa_driver_ops wpa_driver_wext_ops = {
        .name = "wext",
        .desc = "Linux wireless extensions (generic)",
@@ -2339,4 +2370,5 @@ const struct wpa_driver_ops wpa_driver_wext_ops = {
        .get_capa = wpa_driver_wext_get_capa,
        .set_operstate = wpa_driver_wext_set_operstate,
        .get_radio_name = wext_get_radio_name,
+       .signal_poll = wpa_driver_wext_signal_poll,
 };