-/**
- * iwl3945_supported_rate_to_ie - fill in the supported rate in IE field
- *
- * return : set the bit for each supported rate insert in ie
- */
-static u16 iwl3945_supported_rate_to_ie(u8 *ie, u16 supported_rate,
- u16 basic_rate, int *left)
-{
- u16 ret_rates = 0, bit;
- int i;
- u8 *cnt = ie;
- u8 *rates = ie + 1;
-
- for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
- if (bit & supported_rate) {
- ret_rates |= bit;
- rates[*cnt] = iwl3945_rates[i].ieee |
- ((bit & basic_rate) ? 0x80 : 0x00);
- (*cnt)++;
- (*left)--;
- if ((*left <= 0) ||
- (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
- break;
- }
- }
-
- return ret_rates;
-}
-
-/**
- * iwl3945_fill_probe_req - fill in all required fields and IE for probe request
- */
-static u16 iwl3945_fill_probe_req(struct iwl_priv *priv,
- struct ieee80211_mgmt *frame,
- int left)
-{
- int len = 0;
- u8 *pos = NULL;
- u16 active_rates, ret_rates, cck_rates;
-
- /* Make sure there is enough space for the probe request,
- * two mandatory IEs and the data */
- left -= 24;
- if (left < 0)
- return 0;
- len += 24;
-
- frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
- memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
- memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
- memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
- frame->seq_ctrl = 0;
-
- /* fill in our indirect SSID IE */
- /* ...next IE... */
-
- left -= 2;
- if (left < 0)
- return 0;
- len += 2;
- pos = &(frame->u.probe_req.variable[0]);
- *pos++ = WLAN_EID_SSID;
- *pos++ = 0;
-
- /* fill in supported rate */
- /* ...next IE... */
- left -= 2;
- if (left < 0)
- return 0;
-
- /* ... fill it in... */
- *pos++ = WLAN_EID_SUPP_RATES;
- *pos = 0;
-
- priv->active_rate = priv->rates_mask;
- active_rates = priv->active_rate;
- priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
-
- cck_rates = IWL_CCK_RATES_MASK & active_rates;
- ret_rates = iwl3945_supported_rate_to_ie(pos, cck_rates,
- priv->active_rate_basic, &left);
- active_rates &= ~ret_rates;
-
- ret_rates = iwl3945_supported_rate_to_ie(pos, active_rates,
- priv->active_rate_basic, &left);
- active_rates &= ~ret_rates;
-
- len += 2 + *pos;
- pos += (*pos) + 1;
- if (active_rates == 0)
- goto fill_end;
-
- /* fill in supported extended rate */
- /* ...next IE... */
- left -= 2;
- if (left < 0)
- return 0;
- /* ... fill it in... */
- *pos++ = WLAN_EID_EXT_SUPP_RATES;
- *pos = 0;
- iwl3945_supported_rate_to_ie(pos, active_rates,
- priv->active_rate_basic, &left);
- if (*pos > 0)
- len += 2 + *pos;
-
- fill_end:
- return (u16)len;
-}
-