diff options
Diffstat (limited to 'drivers/staging/wfx/scan.c')
| -rw-r--r-- | drivers/staging/wfx/scan.c | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/drivers/staging/wfx/scan.c b/drivers/staging/wfx/scan.c deleted file mode 100644 index 668ef2c60837..000000000000 --- a/drivers/staging/wfx/scan.c +++ /dev/null @@ -1,149 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Scan related functions. - * - * Copyright (c) 2017-2020, Silicon Laboratories, Inc. - * Copyright (c) 2010, ST-Ericsson - */ -#include <net/mac80211.h> - -#include "scan.h" -#include "wfx.h" -#include "sta.h" -#include "hif_tx_mib.h" - -static void __ieee80211_scan_completed_compat(struct ieee80211_hw *hw, - bool aborted) -{ - struct cfg80211_scan_info info = { - .aborted = aborted, - }; - - ieee80211_scan_completed(hw, &info); -} - -static int update_probe_tmpl(struct wfx_vif *wvif, - struct cfg80211_scan_request *req) -{ - struct sk_buff *skb; - - skb = ieee80211_probereq_get(wvif->wdev->hw, wvif->vif->addr, - NULL, 0, req->ie_len); - if (!skb) - return -ENOMEM; - - skb_put_data(skb, req->ie, req->ie_len); - hif_set_template_frame(wvif, skb, HIF_TMPLT_PRBREQ, 0); - dev_kfree_skb(skb); - return 0; -} - -static int send_scan_req(struct wfx_vif *wvif, - struct cfg80211_scan_request *req, int start_idx) -{ - int i, ret; - struct ieee80211_channel *ch_start, *ch_cur; - - for (i = start_idx; i < req->n_channels; i++) { - ch_start = req->channels[start_idx]; - ch_cur = req->channels[i]; - WARN(ch_cur->band != NL80211_BAND_2GHZ, "band not supported"); - if (ch_cur->max_power != ch_start->max_power) - break; - if ((ch_cur->flags ^ ch_start->flags) & IEEE80211_CHAN_NO_IR) - break; - } - wfx_tx_lock_flush(wvif->wdev); - wvif->scan_abort = false; - reinit_completion(&wvif->scan_complete); - ret = hif_scan(wvif, req, start_idx, i - start_idx); - if (ret) { - wfx_tx_unlock(wvif->wdev); - return -EIO; - } - ret = wait_for_completion_timeout(&wvif->scan_complete, 1 * HZ); - if (!ret) { - hif_stop_scan(wvif); - ret = wait_for_completion_timeout(&wvif->scan_complete, 1 * HZ); - dev_dbg(wvif->wdev->dev, "scan timeout (%d channels done)\n", - wvif->scan_nb_chan_done); - } - if (!ret) { - dev_err(wvif->wdev->dev, "scan didn't stop\n"); - ret = -ETIMEDOUT; - } else if (wvif->scan_abort) { - dev_notice(wvif->wdev->dev, "scan abort\n"); - ret = -ECONNABORTED; - } else if (wvif->scan_nb_chan_done > i - start_idx) { - ret = -EIO; - } else { - ret = wvif->scan_nb_chan_done; - } - if (req->channels[start_idx]->max_power != wvif->vif->bss_conf.txpower) - hif_set_output_power(wvif, wvif->vif->bss_conf.txpower); - wfx_tx_unlock(wvif->wdev); - return ret; -} - -/* It is not really necessary to run scan request asynchronously. However, - * there is a bug in "iw scan" when ieee80211_scan_completed() is called before - * wfx_hw_scan() return - */ -void wfx_hw_scan_work(struct work_struct *work) -{ - struct wfx_vif *wvif = container_of(work, struct wfx_vif, scan_work); - struct ieee80211_scan_request *hw_req = wvif->scan_req; - int chan_cur, ret, err; - - mutex_lock(&wvif->wdev->conf_mutex); - mutex_lock(&wvif->scan_lock); - if (wvif->join_in_progress) { - dev_info(wvif->wdev->dev, "%s: abort in-progress REQ_JOIN", - __func__); - wfx_reset(wvif); - } - update_probe_tmpl(wvif, &hw_req->req); - chan_cur = 0; - err = 0; - do { - ret = send_scan_req(wvif, &hw_req->req, chan_cur); - if (ret > 0) { - chan_cur += ret; - err = 0; - } - if (!ret) - err++; - if (err > 2) { - dev_err(wvif->wdev->dev, "scan has not been able to start\n"); - ret = -ETIMEDOUT; - } - } while (ret >= 0 && chan_cur < hw_req->req.n_channels); - mutex_unlock(&wvif->scan_lock); - mutex_unlock(&wvif->wdev->conf_mutex); - __ieee80211_scan_completed_compat(wvif->wdev->hw, ret < 0); -} - -int wfx_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif, - struct ieee80211_scan_request *hw_req) -{ - struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; - - WARN_ON(hw_req->req.n_channels > HIF_API_MAX_NB_CHANNELS); - wvif->scan_req = hw_req; - schedule_work(&wvif->scan_work); - return 0; -} - -void wfx_cancel_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif) -{ - struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; - - wvif->scan_abort = true; - hif_stop_scan(wvif); -} - -void wfx_scan_complete(struct wfx_vif *wvif, int nb_chan_done) -{ - wvif->scan_nb_chan_done = nb_chan_done; - complete(&wvif->scan_complete); -} |