diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/scan.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/scan.c | 599 |
1 files changed, 471 insertions, 128 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/scan.c b/drivers/net/wireless/iwlwifi/mvm/scan.c index 4b6c7d4bd199..004b1f5d0314 100644 --- a/drivers/net/wireless/iwlwifi/mvm/scan.c +++ b/drivers/net/wireless/iwlwifi/mvm/scan.c @@ -97,10 +97,9 @@ static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm) return cpu_to_le16(rx_chain); } -static inline __le32 -iwl_mvm_scan_rxon_flags(struct cfg80211_scan_request *req) +static __le32 iwl_mvm_scan_rxon_flags(enum ieee80211_band band) { - if (req->channels[0]->band == IEEE80211_BAND_2GHZ) + if (band == IEEE80211_BAND_2GHZ) return cpu_to_le32(PHY_BAND_24); else return cpu_to_le32(PHY_BAND_5); @@ -130,19 +129,19 @@ iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum ieee80211_band band, * request list, is not copied here, but inserted directly to the probe * request. */ -static void iwl_mvm_scan_fill_ssids(struct iwl_scan_cmd *cmd, - struct cfg80211_scan_request *req, - int first) +static void iwl_mvm_scan_fill_ssids(struct iwl_ssid_ie *cmd_ssid, + struct cfg80211_ssid *ssids, + int n_ssids, int first) { int fw_idx, req_idx; - for (req_idx = req->n_ssids - 1, fw_idx = 0; req_idx >= first; + for (req_idx = n_ssids - 1, fw_idx = 0; req_idx >= first; req_idx--, fw_idx++) { - cmd->direct_scan[fw_idx].id = WLAN_EID_SSID; - cmd->direct_scan[fw_idx].len = req->ssids[req_idx].ssid_len; - memcpy(cmd->direct_scan[fw_idx].ssid, - req->ssids[req_idx].ssid, - req->ssids[req_idx].ssid_len); + cmd_ssid[fw_idx].id = WLAN_EID_SSID; + cmd_ssid[fw_idx].len = ssids[req_idx].ssid_len; + memcpy(cmd_ssid[fw_idx].ssid, + ssids[req_idx].ssid, + ssids[req_idx].ssid_len); } } @@ -204,7 +203,8 @@ static void iwl_mvm_scan_fill_channels(struct iwl_scan_cmd *cmd, */ static u16 iwl_mvm_fill_probe_req(struct ieee80211_mgmt *frame, const u8 *ta, int n_ssids, const u8 *ssid, int ssid_len, - const u8 *ie, int ie_len, + const u8 *band_ie, int band_ie_len, + const u8 *common_ie, int common_ie_len, int left) { int len = 0; @@ -244,12 +244,19 @@ static u16 iwl_mvm_fill_probe_req(struct ieee80211_mgmt *frame, const u8 *ta, len += ssid_len + 2; - if (WARN_ON(left < ie_len)) + if (WARN_ON(left < band_ie_len + common_ie_len)) return len; - if (ie && ie_len) { - memcpy(pos, ie, ie_len); - len += ie_len; + if (band_ie && band_ie_len) { + memcpy(pos, band_ie, band_ie_len); + pos += band_ie_len; + len += band_ie_len; + } + + if (common_ie && common_ie_len) { + memcpy(pos, common_ie, common_ie_len); + pos += common_ie_len; + len += common_ie_len; } return (u16)len; @@ -267,7 +274,7 @@ static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac, static void iwl_mvm_scan_calc_params(struct iwl_mvm *mvm, struct ieee80211_vif *vif, - int n_ssids, + int n_ssids, u32 flags, struct iwl_mvm_scan_params *params) { bool global_bound = false; @@ -289,6 +296,9 @@ static void iwl_mvm_scan_calc_params(struct iwl_mvm *mvm, params->max_out_time = 250; } + if (flags & NL80211_SCAN_FLAG_LOW_PRIORITY) + params->max_out_time = 200; + not_bound: for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) { @@ -325,22 +335,20 @@ int iwl_mvm_scan_request(struct iwl_mvm *mvm, IWL_DEBUG_SCAN(mvm, "Handling mac80211 scan request\n"); mvm->scan_status = IWL_MVM_SCAN_OS; - memset(cmd, 0, sizeof(struct iwl_scan_cmd) + - mvm->fw->ucode_capa.max_probe_length + - (MAX_NUM_SCAN_CHANNELS * sizeof(struct iwl_scan_channel))); + memset(cmd, 0, ksize(cmd)); cmd->channel_count = (u8)req->n_channels; cmd->quiet_time = cpu_to_le16(IWL_ACTIVE_QUIET_TIME); cmd->quiet_plcp_th = cpu_to_le16(IWL_PLCP_QUIET_THRESH); cmd->rxchain_sel_flags = iwl_mvm_scan_rx_chain(mvm); - iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, ¶ms); + iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, req->flags, ¶ms); cmd->max_out_time = cpu_to_le32(params.max_out_time); cmd->suspend_time = cpu_to_le32(params.suspend_time); if (params.passive_fragmented) cmd->scan_flags |= SCAN_FLAGS_FRAGMENTED_SCAN; - cmd->rxon_flags = iwl_mvm_scan_rxon_flags(req); + cmd->rxon_flags = iwl_mvm_scan_rxon_flags(req->channels[0]->band); cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | MAC_FILTER_IN_BEACON); @@ -367,7 +375,8 @@ int iwl_mvm_scan_request(struct iwl_mvm *mvm, cmd->scan_flags &= ~SCAN_FLAGS_PASSIVE2ACTIVE; } - iwl_mvm_scan_fill_ssids(cmd, req, basic_ssid ? 1 : 0); + iwl_mvm_scan_fill_ssids(cmd->direct_scan, req->ssids, req->n_ssids, + basic_ssid ? 1 : 0); cmd->tx_cmd.tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | TX_CMD_FLG_BT_DIS); @@ -382,7 +391,7 @@ int iwl_mvm_scan_request(struct iwl_mvm *mvm, (struct ieee80211_mgmt *)cmd->data, vif->addr, req->n_ssids, ssid, ssid_len, - req->ie, req->ie_len, + req->ie, req->ie_len, NULL, 0, mvm->fw->ucode_capa.max_probe_length)); iwl_mvm_scan_fill_channels(cmd, req, basic_ssid, ¶ms); @@ -441,16 +450,27 @@ int iwl_mvm_rx_scan_complete(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, return 0; } -int iwl_mvm_rx_sched_scan_results(struct iwl_mvm *mvm, - struct iwl_rx_cmd_buffer *rxb, - struct iwl_device_cmd *cmd) +int iwl_mvm_rx_scan_offload_results(struct iwl_mvm *mvm, + struct iwl_rx_cmd_buffer *rxb, + struct iwl_device_cmd *cmd) { struct iwl_rx_packet *pkt = rxb_addr(rxb); - struct iwl_sched_scan_results *notif = (void *)pkt->data; + u8 client_bitmap = 0; - if (notif->client_bitmap & SCAN_CLIENT_SCHED_SCAN) { - IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); - ieee80211_sched_scan_results(mvm->hw); + if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)) { + struct iwl_sched_scan_results *notif = (void *)pkt->data; + + client_bitmap = notif->client_bitmap; + } + + if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN || + client_bitmap & SCAN_CLIENT_SCHED_SCAN) { + if (mvm->scan_status == IWL_MVM_SCAN_SCHED) { + IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); + ieee80211_sched_scan_results(mvm->hw); + } else { + IWL_DEBUG_SCAN(mvm, "Scan results\n"); + } } return 0; @@ -494,7 +514,7 @@ static bool iwl_mvm_scan_abort_notif(struct iwl_notif_wait_data *notif_wait, }; } -int iwl_mvm_cancel_scan(struct iwl_mvm *mvm) +static int iwl_mvm_cancel_regular_scan(struct iwl_mvm *mvm) { struct iwl_notification_wait wait_scan_abort; static const u8 scan_abort_notif[] = { SCAN_ABORT_CMD, @@ -535,33 +555,52 @@ int iwl_mvm_rx_scan_offload_complete_notif(struct iwl_mvm *mvm, struct iwl_device_cmd *cmd) { struct iwl_rx_packet *pkt = rxb_addr(rxb); - struct iwl_scan_offload_complete *scan_notif = (void *)pkt->data; + u8 status, ebs_status; + + if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) { + struct iwl_periodic_scan_complete *scan_notif; + + scan_notif = (void *)pkt->data; + status = scan_notif->status; + ebs_status = scan_notif->ebs_status; + } else { + struct iwl_scan_offload_complete *scan_notif; + scan_notif = (void *)pkt->data; + status = scan_notif->status; + ebs_status = scan_notif->ebs_status; + } /* scan status must be locked for proper checking */ lockdep_assert_held(&mvm->mutex); IWL_DEBUG_SCAN(mvm, - "Scheduled scan completed, status %s EBS status %s:%d\n", - scan_notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? - "completed" : "aborted", scan_notif->ebs_status == - IWL_SCAN_EBS_SUCCESS ? "success" : "failed", - scan_notif->ebs_status); + "%s completed, status %s, EBS status %s\n", + mvm->scan_status == IWL_MVM_SCAN_SCHED ? + "Scheduled scan" : "Scan", + status == IWL_SCAN_OFFLOAD_COMPLETED ? + "completed" : "aborted", + ebs_status == IWL_SCAN_EBS_SUCCESS ? + "success" : "failed"); /* only call mac80211 completion if the stop was initiated by FW */ if (mvm->scan_status == IWL_MVM_SCAN_SCHED) { mvm->scan_status = IWL_MVM_SCAN_NONE; ieee80211_sched_scan_stopped(mvm->hw); + } else if (mvm->scan_status == IWL_MVM_SCAN_OS) { + mvm->scan_status = IWL_MVM_SCAN_NONE; + ieee80211_scan_completed(mvm->hw, + status == IWL_SCAN_OFFLOAD_ABORTED); } - mvm->last_ebs_successful = !scan_notif->ebs_status; + mvm->last_ebs_successful = !ebs_status; return 0; } static void iwl_scan_offload_build_tx_cmd(struct iwl_mvm *mvm, struct ieee80211_vif *vif, - struct ieee80211_sched_scan_ies *ies, + struct ieee80211_scan_ies *ies, enum ieee80211_band band, struct iwl_tx_cmd *cmd, u8 *data) @@ -577,7 +616,8 @@ static void iwl_scan_offload_build_tx_cmd(struct iwl_mvm *mvm, cmd_len = iwl_mvm_fill_probe_req((struct ieee80211_mgmt *)data, vif->addr, 1, NULL, 0, - ies->ie[band], ies->len[band], + ies->ies[band], ies->len[band], + ies->common_ies, ies->common_ie_len, SCAN_OFFLOAD_PROBE_REQ_SIZE); cmd->len = cpu_to_le16(cmd_len); } @@ -588,9 +628,7 @@ static void iwl_build_scan_cmd(struct iwl_mvm *mvm, struct iwl_scan_offload_cmd *scan, struct iwl_mvm_scan_params *params) { - scan->channel_count = - mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels + - mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels; + scan->channel_count = req->n_channels; scan->quiet_time = cpu_to_le16(IWL_ACTIVE_QUIET_TIME); scan->quiet_plcp_th = cpu_to_le16(IWL_PLCP_QUIET_THRESH); scan->good_CRC_th = IWL_GOOD_CRC_TH_DEFAULT; @@ -623,8 +661,8 @@ static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list) } static void iwl_scan_offload_build_ssid(struct cfg80211_sched_scan_request *req, - struct iwl_scan_offload_cmd *scan, - u32 *ssid_bitmap) + struct iwl_ssid_ie *direct_scan, + u32 *ssid_bitmap, bool basic_ssid) { int i, j; int index; @@ -638,10 +676,10 @@ static void iwl_scan_offload_build_ssid(struct cfg80211_sched_scan_request *req, /* skip empty SSID matchsets */ if (!req->match_sets[i].ssid.ssid_len) continue; - scan->direct_scan[i].id = WLAN_EID_SSID; - scan->direct_scan[i].len = req->match_sets[i].ssid.ssid_len; - memcpy(scan->direct_scan[i].ssid, req->match_sets[i].ssid.ssid, - scan->direct_scan[i].len); + direct_scan[i].id = WLAN_EID_SSID; + direct_scan[i].len = req->match_sets[i].ssid.ssid_len; + memcpy(direct_scan[i].ssid, req->match_sets[i].ssid.ssid, + direct_scan[i].len); } /* add SSIDs from scan SSID list */ @@ -649,14 +687,14 @@ static void iwl_scan_offload_build_ssid(struct cfg80211_sched_scan_request *req, for (j = 0; j < req->n_ssids && i < PROBE_OPTION_MAX; j++) { index = iwl_ssid_exist(req->ssids[j].ssid, req->ssids[j].ssid_len, - scan->direct_scan); + direct_scan); if (index < 0) { - if (!req->ssids[j].ssid_len) + if (!req->ssids[j].ssid_len && basic_ssid) continue; - scan->direct_scan[i].id = WLAN_EID_SSID; - scan->direct_scan[i].len = req->ssids[j].ssid_len; - memcpy(scan->direct_scan[i].ssid, req->ssids[j].ssid, - scan->direct_scan[i].len); + direct_scan[i].id = WLAN_EID_SSID; + direct_scan[i].len = req->ssids[j].ssid_len; + memcpy(direct_scan[i].ssid, req->ssids[j].ssid, + direct_scan[i].len); *ssid_bitmap |= BIT(i + 1); i++; } else { @@ -667,83 +705,67 @@ static void iwl_scan_offload_build_ssid(struct cfg80211_sched_scan_request *req, static void iwl_build_channel_cfg(struct iwl_mvm *mvm, struct cfg80211_sched_scan_request *req, - struct iwl_scan_channel_cfg *channels, + u8 *channels_buffer, enum ieee80211_band band, - int *head, int *tail, + int *head, u32 ssid_bitmap, struct iwl_mvm_scan_params *params) { - struct ieee80211_supported_band *s_band; - int n_channels = req->n_channels; - int i, j, index = 0; - bool partial; + u32 n_channels = mvm->fw->ucode_capa.n_scan_channels; + __le32 *type = (__le32 *)channels_buffer; + __le16 *channel_number = (__le16 *)(type + n_channels); + __le16 *iter_count = channel_number + n_channels; + __le32 *iter_interval = (__le32 *)(iter_count + n_channels); + u8 *active_dwell = (u8 *)(iter_interval + n_channels); + u8 *passive_dwell = active_dwell + n_channels; + int i, index = 0; + + for (i = 0; i < req->n_channels; i++) { + struct ieee80211_channel *chan = req->channels[i]; + + if (chan->band != band) + continue; - /* - * We have to configure all supported channels, even if we don't want to - * scan on them, but we have to send channels in the order that we want - * to scan. So add requested channels to head of the list and others to - * the end. - */ - s_band = &mvm->nvm_data->bands[band]; - - for (i = 0; i < s_band->n_channels && *head <= *tail; i++) { - partial = false; - for (j = 0; j < n_channels; j++) - if (s_band->channels[i].center_freq == - req->channels[j]->center_freq) { - index = *head; - (*head)++; - /* - * Channels that came with the request will be - * in partial scan . - */ - partial = true; - break; - } - if (!partial) { - index = *tail; - (*tail)--; - } - channels->channel_number[index] = - cpu_to_le16(ieee80211_frequency_to_channel( - s_band->channels[i].center_freq)); - channels->dwell_time[index][0] = params->dwell[band].active; - channels->dwell_time[index][1] = params->dwell[band].passive; + index = *head; + (*head)++; + + channel_number[index] = cpu_to_le16(chan->hw_value); + active_dwell[index] = params->dwell[band].active; + passive_dwell[index] = params->dwell[band].passive; - channels->iter_count[index] = cpu_to_le16(1); - channels->iter_interval[index] = 0; + iter_count[index] = cpu_to_le16(1); + iter_interval[index] = 0; - if (!(s_band->channels[i].flags & IEEE80211_CHAN_NO_IR)) - channels->type[index] |= + if (!(chan->flags & IEEE80211_CHAN_NO_IR)) + type[index] |= cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_ACTIVE); - channels->type[index] |= - cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_FULL); - if (partial) - channels->type[index] |= - cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_PARTIAL); + type[index] |= cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_FULL | + IWL_SCAN_OFFLOAD_CHANNEL_PARTIAL); - if (s_band->channels[i].flags & IEEE80211_CHAN_NO_HT40) - channels->type[index] |= + if (chan->flags & IEEE80211_CHAN_NO_HT40) + type[index] |= cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_NARROW); /* scan for all SSIDs from req->ssids */ - channels->type[index] |= cpu_to_le32(ssid_bitmap); + type[index] |= cpu_to_le32(ssid_bitmap); } } int iwl_mvm_config_sched_scan(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct cfg80211_sched_scan_request *req, - struct ieee80211_sched_scan_ies *ies) + struct ieee80211_scan_ies *ies) { int band_2ghz = mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels; int band_5ghz = mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels; int head = 0; - int tail = band_2ghz + band_5ghz - 1; u32 ssid_bitmap; int cmd_len; int ret; + u8 *probes; + bool basic_ssid = !(mvm->fw->ucode_capa.flags & + IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID); struct iwl_scan_offload_cfg *scan_cfg; struct iwl_host_cmd cmd = { @@ -754,35 +776,40 @@ int iwl_mvm_config_sched_scan(struct iwl_mvm *mvm, lockdep_assert_held(&mvm->mutex); cmd_len = sizeof(struct iwl_scan_offload_cfg) + + mvm->fw->ucode_capa.n_scan_channels * IWL_SCAN_CHAN_SIZE + 2 * SCAN_OFFLOAD_PROBE_REQ_SIZE; scan_cfg = kzalloc(cmd_len, GFP_KERNEL); if (!scan_cfg) return -ENOMEM; - iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, ¶ms); + probes = scan_cfg->data + + mvm->fw->ucode_capa.n_scan_channels * IWL_SCAN_CHAN_SIZE; + + iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, 0, ¶ms); iwl_build_scan_cmd(mvm, vif, req, &scan_cfg->scan_cmd, ¶ms); scan_cfg->scan_cmd.len = cpu_to_le16(cmd_len); - iwl_scan_offload_build_ssid(req, &scan_cfg->scan_cmd, &ssid_bitmap); + iwl_scan_offload_build_ssid(req, scan_cfg->scan_cmd.direct_scan, + &ssid_bitmap, basic_ssid); /* build tx frames for supported bands */ if (band_2ghz) { iwl_scan_offload_build_tx_cmd(mvm, vif, ies, IEEE80211_BAND_2GHZ, &scan_cfg->scan_cmd.tx_cmd[0], - scan_cfg->data); - iwl_build_channel_cfg(mvm, req, &scan_cfg->channel_cfg, - IEEE80211_BAND_2GHZ, &head, &tail, + probes); + iwl_build_channel_cfg(mvm, req, scan_cfg->data, + IEEE80211_BAND_2GHZ, &head, ssid_bitmap, ¶ms); } if (band_5ghz) { iwl_scan_offload_build_tx_cmd(mvm, vif, ies, IEEE80211_BAND_5GHZ, &scan_cfg->scan_cmd.tx_cmd[1], - scan_cfg->data + + probes + SCAN_OFFLOAD_PROBE_REQ_SIZE); - iwl_build_channel_cfg(mvm, req, &scan_cfg->channel_cfg, - IEEE80211_BAND_5GHZ, &head, &tail, + iwl_build_channel_cfg(mvm, req, scan_cfg->data, + IEEE80211_BAND_5GHZ, &head, ssid_bitmap, ¶ms); } @@ -872,11 +899,11 @@ int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, .watchdog = IWL_SCHED_SCAN_WATCHDOG, .schedule_line[0].iterations = IWL_FAST_SCHED_SCAN_ITERATIONS, - .schedule_line[0].delay = req->interval / 1000, + .schedule_line[0].delay = cpu_to_le16(req->interval / 1000), .schedule_line[0].full_scan_mul = 1, .schedule_line[1].iterations = 0xff, - .schedule_line[1].delay = req->interval / 1000, + .schedule_line[1].delay = cpu_to_le16(req->interval / 1000), .schedule_line[1].full_scan_mul = IWL_FULL_SCAN_MULTIPLIER, }; @@ -899,7 +926,7 @@ int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, sizeof(scan_req), &scan_req); } -static int iwl_mvm_send_sched_scan_abort(struct iwl_mvm *mvm) +static int iwl_mvm_send_scan_offload_abort(struct iwl_mvm *mvm) { int ret; struct iwl_host_cmd cmd = { @@ -910,7 +937,9 @@ static int iwl_mvm_send_sched_scan_abort(struct iwl_mvm *mvm) /* Exit instantly with error when device is not ready * to receive scan abort command or it does not perform * scheduled scan currently */ - if (mvm->scan_status != IWL_MVM_SCAN_SCHED) + if (mvm->scan_status != IWL_MVM_SCAN_SCHED && + (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) || + mvm->scan_status != IWL_MVM_SCAN_OS)) return -EIO; ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); @@ -932,16 +961,19 @@ static int iwl_mvm_send_sched_scan_abort(struct iwl_mvm *mvm) return ret; } -int iwl_mvm_sched_scan_stop(struct iwl_mvm *mvm, bool notify) +int iwl_mvm_scan_offload_stop(struct iwl_mvm *mvm, bool notify) { int ret; struct iwl_notification_wait wait_scan_done; static const u8 scan_done_notif[] = { SCAN_OFFLOAD_COMPLETE, }; + bool sched = mvm->scan_status == IWL_MVM_SCAN_SCHED; lockdep_assert_held(&mvm->mutex); - if (mvm->scan_status != IWL_MVM_SCAN_SCHED) { - IWL_DEBUG_SCAN(mvm, "No offloaded scan to stop\n"); + if (mvm->scan_status != IWL_MVM_SCAN_SCHED && + (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) || + mvm->scan_status != IWL_MVM_SCAN_OS)) { + IWL_DEBUG_SCAN(mvm, "No scan to stop\n"); return 0; } @@ -950,14 +982,16 @@ int iwl_mvm_sched_scan_stop(struct iwl_mvm *mvm, bool notify) ARRAY_SIZE(scan_done_notif), NULL, NULL); - ret = iwl_mvm_send_sched_scan_abort(mvm); + ret = iwl_mvm_send_scan_offload_abort(mvm); if (ret) { - IWL_DEBUG_SCAN(mvm, "Send stop offload scan failed %d\n", ret); + IWL_DEBUG_SCAN(mvm, "Send stop %sscan failed %d\n", + sched ? "offloaded " : "", ret); iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); return ret; } - IWL_DEBUG_SCAN(mvm, "Successfully sent stop offload scan\n"); + IWL_DEBUG_SCAN(mvm, "Successfully sent stop %sscan\n", + sched ? "offloaded " : ""); ret = iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 1 * HZ); if (ret) @@ -970,8 +1004,317 @@ int iwl_mvm_sched_scan_stop(struct iwl_mvm *mvm, bool notify) */ mvm->scan_status = IWL_MVM_SCAN_NONE; - if (notify) - ieee80211_sched_scan_stopped(mvm->hw); + if (notify) { + if (sched) + ieee80211_sched_scan_stopped(mvm->hw); + else + ieee80211_scan_completed(mvm->hw, true); + } return 0; } + +static void iwl_mvm_unified_scan_fill_tx_cmd(struct iwl_mvm *mvm, + struct iwl_scan_req_tx_cmd *tx_cmd, + bool no_cck) +{ + tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | + TX_CMD_FLG_BT_DIS); + tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, + IEEE80211_BAND_2GHZ, + no_cck); + tx_cmd[0].sta_id = mvm->aux_sta.sta_id; + + tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | + TX_CMD_FLG_BT_DIS); + tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, + IEEE80211_BAND_5GHZ, + no_cck); + tx_cmd[1].sta_id = mvm->aux_sta.sta_id; +} + +static void +iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, + struct ieee80211_channel **channels, + int n_channels, u32 ssid_bitmap, + struct iwl_scan_req_unified_lmac *cmd) +{ + struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; + int i; + + for (i = 0; i < n_channels; i++) { + channel_cfg[i].channel_num = + cpu_to_le16(channels[i]->hw_value); + channel_cfg[i].iter_count = cpu_to_le16(1); + channel_cfg[i].iter_interval = 0; + channel_cfg[i].flags = + cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | + ssid_bitmap); + } +} + +static void +iwl_mvm_build_unified_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, + struct ieee80211_scan_ies *ies, + struct iwl_scan_req_unified_lmac *cmd) +{ + struct iwl_scan_probe_req *preq = (void *)(cmd->data + + sizeof(struct iwl_scan_channel_cfg_lmac) * + mvm->fw->ucode_capa.n_scan_channels); + struct ieee80211_mgmt *frame = (struct ieee80211_mgmt *)preq->buf; + u8 *pos; + + frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); + eth_broadcast_addr(frame->da); + memcpy(frame->sa, vif->addr, ETH_ALEN); + eth_broadcast_addr(frame->bssid); + frame->seq_ctrl = 0; + + pos = frame->u.probe_req.variable; + *pos++ = WLAN_EID_SSID; + *pos++ = 0; + + preq->mac_header.offset = 0; + preq->mac_header.len = cpu_to_le16(24 + 2); + + memcpy(pos, ies->ies[IEEE80211_BAND_2GHZ], + ies->len[IEEE80211_BAND_2GHZ]); + preq->band_data[0].offset = cpu_to_le16(pos - preq->buf); + preq->band_data[0].len = cpu_to_le16(ies->len[IEEE80211_BAND_2GHZ]); + pos += ies->len[IEEE80211_BAND_2GHZ]; + + memcpy(pos, ies->ies[IEEE80211_BAND_5GHZ], + ies->len[IEEE80211_BAND_5GHZ]); + preq->band_data[1].offset = cpu_to_le16(pos - preq->buf); + preq->band_data[1].len = cpu_to_le16(ies->len[IEEE80211_BAND_5GHZ]); + pos += ies->len[IEEE80211_BAND_5GHZ]; + + memcpy(pos, ies->common_ies, ies->common_ie_len); + preq->common_data.offset = cpu_to_le16(pos - preq->buf); + preq->common_data.len = cpu_to_le16(ies->common_ie_len); +} + +static void +iwl_mvm_build_generic_unified_scan_cmd(struct iwl_mvm *mvm, + struct iwl_scan_req_unified_lmac *cmd, + struct iwl_mvm_scan_params *params) +{ + memset(cmd, 0, ksize(cmd)); + cmd->active_dwell = (u8)params->dwell[IEEE80211_BAND_2GHZ].active; + cmd->passive_dwell = (u8)params->dwell[IEEE80211_BAND_2GHZ].passive; + /* TODO: Use params; now fragmented isn't used. */ + cmd->fragmented_dwell = 0; + cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); + cmd->max_out_time = cpu_to_le32(params->max_out_time); + cmd->suspend_time = cpu_to_le32(params->suspend_time); + cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_HIGH); + cmd->iter_num = cpu_to_le32(1); + + if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT && + mvm->last_ebs_successful) { + cmd->channel_opt[0].flags = + cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | + IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | + IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); + cmd->channel_opt[1].flags = + cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | + IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | + IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); + } +} + +int iwl_mvm_unified_scan_lmac(struct iwl_mvm *mvm, + struct ieee80211_vif *vif, + struct ieee80211_scan_request *req) +{ + struct iwl_host_cmd hcmd = { + .id = SCAN_OFFLOAD_REQUEST_CMD, + .len = { sizeof(struct iwl_scan_req_unified_lmac) + + sizeof(struct iwl_scan_channel_cfg_lmac) * + mvm->fw->ucode_capa.n_scan_channels + + sizeof(struct iwl_scan_probe_req), }, + .data = { mvm->scan_cmd, }, + .dataflags = { IWL_HCMD_DFL_NOCOPY, }, + }; + struct iwl_scan_req_unified_lmac *cmd = mvm->scan_cmd; + struct iwl_mvm_scan_params params = {}; + u32 flags; + int ssid_bitmap = 0; + int ret, i; + + lockdep_assert_held(&mvm->mutex); + + /* we should have failed registration if scan_cmd was NULL */ + if (WARN_ON(mvm->scan_cmd == NULL)) + return -ENOMEM; + + if (WARN_ON_ONCE(req->req.n_ssids > PROBE_OPTION_MAX || + req->ies.common_ie_len + req->ies.len[0] + + req->ies.len[1] + 24 + 2 > + SCAN_OFFLOAD_PROBE_REQ_SIZE || + req->req.n_channels > + mvm->fw->ucode_capa.n_scan_channels)) + return -1; + + mvm->scan_status = IWL_MVM_SCAN_OS; + + iwl_mvm_scan_calc_params(mvm, vif, req->req.n_ssids, req->req.flags, + ¶ms); + + iwl_mvm_build_generic_unified_scan_cmd(mvm, cmd, ¶ms); + + cmd->n_channels = (u8)req->req.n_channels; + + flags = IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; + + if (req->req.n_ssids == 1 && req->req.ssids[0].ssid_len != 0) + flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; + + if (params.passive_fragmented) + flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; + + if (req->req.n_ssids == 0) + flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; + + cmd->scan_flags = cpu_to_le32(flags); + + cmd->flags = iwl_mvm_scan_rxon_flags(req->req.channels[0]->band); + cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | + MAC_FILTER_IN_BEACON); + iwl_mvm_unified_scan_fill_tx_cmd(mvm, cmd->tx_cmd, req->req.no_cck); + iwl_mvm_scan_fill_ssids(cmd->direct_scan, req->req.ssids, + req->req.n_ssids, 0); + + cmd->schedule[0].delay = 0; + cmd->schedule[0].iterations = 1; + cmd->schedule[0].full_scan_mul = 0; + cmd->schedule[1].delay = 0; + cmd->schedule[1].iterations = 0; + cmd->schedule[1].full_scan_mul = 0; + + for (i = 1; i <= req->req.n_ssids; i++) + ssid_bitmap |= BIT(i); + + iwl_mvm_lmac_scan_cfg_channels(mvm, req->req.channels, + req->req.n_channels, ssid_bitmap, + cmd); + + iwl_mvm_build_unified_scan_probe(mvm, vif, &req->ies, cmd); + + ret = iwl_mvm_send_cmd(mvm, &hcmd); + if (!ret) { + IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); + } else { + /* + * If the scan failed, it usually means that the FW was unable + * to allocate the time events. Warn on it, but maybe we + * should try to send the command again with different params. + */ + IWL_ERR(mvm, "Scan failed! ret %d\n", ret); + mvm->scan_status = IWL_MVM_SCAN_NONE; + ret = -EIO; + } + return ret; +} + +int iwl_mvm_unified_sched_scan_lmac(struct iwl_mvm *mvm, + struct ieee80211_vif *vif, + struct cfg80211_sched_scan_request *req, + struct ieee80211_scan_ies *ies) +{ + struct iwl_host_cmd hcmd = { + .id = SCAN_OFFLOAD_REQUEST_CMD, + .len = { sizeof(struct iwl_scan_req_unified_lmac) + + sizeof(struct iwl_scan_channel_cfg_lmac) * + mvm->fw->ucode_capa.n_scan_channels + + sizeof(struct iwl_scan_probe_req), }, + .data = { mvm->scan_cmd, }, + .dataflags = { IWL_HCMD_DFL_NOCOPY, }, + }; + struct iwl_scan_req_unified_lmac *cmd = mvm->scan_cmd; + struct iwl_mvm_scan_params params = {}; + int ret; + u32 flags = 0, ssid_bitmap = 0; + + lockdep_assert_held(&mvm->mutex); + + /* we should have failed registration if scan_cmd was NULL */ + if (WARN_ON(mvm->scan_cmd == NULL)) + return -ENOMEM; + + if (WARN_ON_ONCE(req->n_ssids > PROBE_OPTION_MAX || + ies->common_ie_len + ies->len[0] + ies->len[1] + 24 + 2 + > SCAN_OFFLOAD_PROBE_REQ_SIZE || + req->n_channels > mvm->fw->ucode_capa.n_scan_channels)) + return -ENOBUFS; + + iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, 0, ¶ms); + + iwl_mvm_build_generic_unified_scan_cmd(mvm, cmd, ¶ms); + + cmd->n_channels = (u8)req->n_channels; + + if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { + IWL_DEBUG_SCAN(mvm, + "Sending scheduled scan with filtering, n_match_sets %d\n", + req->n_match_sets); + } else { + IWL_DEBUG_SCAN(mvm, + "Sending Scheduled scan without filtering\n"); + flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; + } + + if (req->n_ssids == 1 && req->ssids[0].ssid_len != 0) + flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; + + if (params.passive_fragmented) + flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; + + if (req->n_ssids == 0) + flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; + + cmd->scan_flags = cpu_to_le32(flags); + + cmd->flags = iwl_mvm_scan_rxon_flags(req->channels[0]->band); + cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | + MAC_FILTER_IN_BEACON); + iwl_mvm_unified_scan_fill_tx_cmd(mvm, cmd->tx_cmd, false); + iwl_scan_offload_build_ssid(req, cmd->direct_scan, &ssid_bitmap, false); + + cmd->schedule[0].delay = cpu_to_le16(req->interval / MSEC_PER_SEC); + cmd->schedule[0].iterations = IWL_FAST_SCHED_SCAN_ITERATIONS; + cmd->schedule[0].full_scan_mul = 1; + + cmd->schedule[1].delay = cpu_to_le16(req->interval / MSEC_PER_SEC); + cmd->schedule[1].iterations = 0xff; + cmd->schedule[1].full_scan_mul = IWL_FULL_SCAN_MULTIPLIER; + + iwl_mvm_lmac_scan_cfg_channels(mvm, req->channels, req->n_channels, + ssid_bitmap, cmd); + + iwl_mvm_build_unified_scan_probe(mvm, vif, ies, cmd); + + ret = iwl_mvm_send_cmd(mvm, &hcmd); + if (!ret) { + IWL_DEBUG_SCAN(mvm, + "Sched scan request was sent successfully\n"); + } else { + /* + * If the scan failed, it usually means that the FW was unable + * to allocate the time events. Warn on it, but maybe we + * should try to send the command again with different params. + */ + IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); + mvm->scan_status = IWL_MVM_SCAN_NONE; + ret = -EIO; + } + return ret; +} + + +int iwl_mvm_cancel_scan(struct iwl_mvm *mvm) +{ + if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) + return iwl_mvm_scan_offload_stop(mvm, true); + return iwl_mvm_cancel_regular_scan(mvm); +} |