diff options
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/mvm.h | 25 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/ops.c | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c | 4 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/scan.c | 78 |
4 files changed, 107 insertions, 2 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h index 203eb7233c77..6e7470d3a826 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h @@ -826,6 +826,12 @@ struct iwl_time_sync_data { bool active; }; +struct iwl_mei_scan_filter { + bool is_mei_limited_scan; + struct sk_buff_head scan_res; + struct work_struct scan_work; +}; + struct iwl_mvm { /* for logger access */ struct device *dev; @@ -1177,6 +1183,8 @@ struct iwl_mvm { bool pldr_sync; struct iwl_time_sync_data time_sync; + + struct iwl_mei_scan_filter mei_scan_filter; }; /* Extract MVM priv from op_mode and _hw */ @@ -2304,6 +2312,7 @@ void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm, struct ieee80211_vif *vif, const struct ieee80211_sta *sta, u16 tid); +void iwl_mvm_mei_scan_filter_init(struct iwl_mei_scan_filter *mei_scan_filter); void iwl_mvm_ptp_init(struct iwl_mvm *mvm); void iwl_mvm_ptp_remove(struct iwl_mvm *mvm); @@ -2515,6 +2524,22 @@ static inline void iwl_mvm_mei_set_sw_rfkill_state(struct iwl_mvm *mvm) sw_rfkill); } +static inline bool iwl_mvm_mei_filter_scan(struct iwl_mvm *mvm, + struct sk_buff *skb) +{ + struct ieee80211_mgmt *mgmt = (void *)skb->data; + + if (mvm->mei_scan_filter.is_mei_limited_scan && + (ieee80211_is_probe_resp(mgmt->frame_control) || + ieee80211_is_beacon(mgmt->frame_control))) { + skb_queue_tail(&mvm->mei_scan_filter.scan_res, skb); + schedule_work(&mvm->mei_scan_filter.scan_work); + return true; + } + + return false; +} + void iwl_mvm_send_roaming_forbidden_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif, bool forbidden); diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c index 8bb865e708dc..26c3f00d6f7d 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c @@ -1375,6 +1375,8 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, mvm->mei_registered = !iwl_mei_register(mvm, &mei_ops); + iwl_mvm_mei_scan_filter_init(&mvm->mei_scan_filter); + if (iwl_mvm_start_get_nvm(mvm)) { /* * Getting NVM failed while CSME is the owner, but we are diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c index 542f6658f2d4..e1d02c260e69 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c @@ -2588,10 +2588,10 @@ void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi, } if (!iwl_mvm_reorder(mvm, napi, queue, sta, skb, desc) && - likely(!iwl_mvm_time_sync_frame(mvm, skb, hdr->addr2))) + likely(!iwl_mvm_time_sync_frame(mvm, skb, hdr->addr2)) && + likely(!iwl_mvm_mei_filter_scan(mvm, skb))) iwl_mvm_pass_packet_to_mac80211(mvm, napi, skb, queue, sta, link_sta); - out: rcu_read_unlock(); } diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c index 1e20f9538640..fe7cb33d5593 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c @@ -2624,6 +2624,80 @@ static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = { IWL_SCAN_UMAC_HANDLER(12), }; +static void iwl_mvm_mei_scan_work(struct work_struct *wk) +{ + struct iwl_mei_scan_filter *scan_filter = + container_of(wk, struct iwl_mei_scan_filter, scan_work); + struct iwl_mvm *mvm = + container_of(scan_filter, struct iwl_mvm, mei_scan_filter); + struct iwl_mvm_csme_conn_info *info; + struct sk_buff *skb; + u8 bssid[ETH_ALEN]; + + mutex_lock(&mvm->mutex); + info = iwl_mvm_get_csme_conn_info(mvm); + memcpy(bssid, info->conn_info.bssid, ETH_ALEN); + mutex_unlock(&mvm->mutex); + + while ((skb = skb_dequeue(&scan_filter->scan_res))) { + struct ieee80211_mgmt *mgmt = (void *)skb->data; + + if (!memcmp(mgmt->bssid, bssid, ETH_ALEN)) + ieee80211_rx_irqsafe(mvm->hw, skb); + else + kfree_skb(skb); + } +} + +void iwl_mvm_mei_scan_filter_init(struct iwl_mei_scan_filter *mei_scan_filter) +{ + skb_queue_head_init(&mei_scan_filter->scan_res); + INIT_WORK(&mei_scan_filter->scan_work, iwl_mvm_mei_scan_work); +} + +/* In case CSME is connected and has link protection set, this function will + * override the scan request to scan only the associated channel and only for + * the associated SSID. + */ +static void iwl_mvm_mei_limited_scan(struct iwl_mvm *mvm, + struct iwl_mvm_scan_params *params) +{ + struct iwl_mvm_csme_conn_info *info = iwl_mvm_get_csme_conn_info(mvm); + struct iwl_mei_conn_info *conn_info; + struct ieee80211_channel *chan; + + if (!info) { + IWL_DEBUG_SCAN(mvm, "mei_limited_scan: no connection info\n"); + return; + } + + conn_info = &info->conn_info; + if (!info->conn_info.lp_state || !info->conn_info.ssid_len) + return; + + if (!params->n_channels || !params->n_ssids) + return; + + mvm->mei_scan_filter.is_mei_limited_scan = true; + + chan = ieee80211_get_channel(mvm->hw->wiphy, + ieee80211_channel_to_frequency(conn_info->channel, + conn_info->band)); + if (!chan) { + IWL_DEBUG_SCAN(mvm, + "Failed to get CSME channel (chan=%u band=%u)\n", + conn_info->channel, conn_info->band); + return; + } + + params->n_channels = 1; + params->channels[0] = chan; + + params->n_ssids = 1; + params->ssids[0].ssid_len = conn_info->ssid_len; + memcpy(params->ssids[0].ssid, conn_info->ssid, conn_info->ssid_len); +} + static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct iwl_host_cmd *hcmd, @@ -2636,6 +2710,8 @@ static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm, lockdep_assert_held(&mvm->mutex); memset(mvm->scan_cmd, 0, mvm->scan_cmd_size); + iwl_mvm_mei_limited_scan(mvm, params); + if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { hcmd->id = SCAN_OFFLOAD_REQUEST_CMD; @@ -2992,6 +3068,8 @@ void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, u32 uid = __le32_to_cpu(notif->uid); bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED); + mvm->mei_scan_filter.is_mei_limited_scan = false; + if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status))) return; |