diff options
| author | Nathan Errera <nathan.errera@intel.com> | 2022-01-28 15:34:21 +0200 |
|---|---|---|
| committer | Luca Coelho <luciano.coelho@intel.com> | 2022-02-18 10:40:49 +0200 |
| commit | ad12b23131242714c814de8a3ba4e099674ab6a9 (patch) | |
| tree | 0b865e4027277b00b9f2cdcf4f23ff03d16f69af /drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c | |
| parent | 30d17c12b0895e15ce22ebc1f52a4ff02df6dbc6 (diff) | |
iwlwifi: mvm: offload channel switch timing to FW
Since FW is now in charge of timing the channel switch, there is no need
to send the add/modify/remove time event command to fw with every (e)CSA
element.
However, the driver needs to cancel the channel switch if the CS start
notification arrives and it does not know about an ongoing channel switch.
Signed-off-by: Nathan Errera <nathan.errera@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220128153013.ac3af0ff22c7.Ie87c62047b71b93b12aa80b5dc5391b4798dbe97@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c index fd7d4abfb454..bcce3c1c5feb 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c @@ -1602,6 +1602,18 @@ void iwl_mvm_channel_switch_start_notif(struct iwl_mvm *mvm, RCU_INIT_POINTER(mvm->csa_vif, NULL); return; case NL80211_IFTYPE_STATION: + /* + * if we don't know about an ongoing channel switch, + * make sure FW cancels it + */ + if (iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP, + CHANNEL_SWITCH_ERROR_NOTIF, + 0) && !vif->csa_active) { + IWL_DEBUG_INFO(mvm, "Channel Switch was canceled\n"); + iwl_mvm_cancel_channel_switch(mvm, vif, mac_id); + break; + } + iwl_mvm_csa_client_absent(mvm, vif); cancel_delayed_work(&mvmvif->csa_work); ieee80211_chswitch_done(vif, true); @@ -1615,6 +1627,31 @@ out_unlock: rcu_read_unlock(); } +void iwl_mvm_channel_switch_error_notif(struct iwl_mvm *mvm, + struct iwl_rx_cmd_buffer *rxb) +{ + struct iwl_rx_packet *pkt = rxb_addr(rxb); + struct iwl_channel_switch_error_notif *notif = (void *)pkt->data; + struct ieee80211_vif *vif; + u32 id = le32_to_cpu(notif->mac_id); + u32 csa_err_mask = le32_to_cpu(notif->csa_err_mask); + + rcu_read_lock(); + vif = iwl_mvm_rcu_dereference_vif_id(mvm, id, true); + if (!vif) { + rcu_read_unlock(); + return; + } + + IWL_DEBUG_INFO(mvm, "FW reports CSA error: mac_id=%u, csa_err_mask=%u\n", + id, csa_err_mask); + if (csa_err_mask & (CS_ERR_COUNT_ERROR | + CS_ERR_LONG_DELAY_AFTER_CS | + CS_ERR_TX_BLOCK_TIMER_EXPIRED)) + ieee80211_channel_switch_disconnect(vif, true); + rcu_read_unlock(); +} + void iwl_mvm_rx_missed_vap_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) { |