diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/time-event.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/time-event.c | 90 |
1 files changed, 85 insertions, 5 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c b/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c index 218fdf1ed530..60ec5ca6927c 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c @@ -692,7 +692,7 @@ void iwl_mvm_protect_session(struct iwl_mvm *mvm, /* Determine whether mac or link id should be used, and validate the link id */ static int iwl_mvm_get_session_prot_id(struct iwl_mvm *mvm, struct ieee80211_vif *vif, - u32 link_id) + s8 link_id) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); int ver = iwl_fw_lookup_cmd_ver(mvm->fw, @@ -716,7 +716,7 @@ static int iwl_mvm_get_session_prot_id(struct iwl_mvm *mvm, static void iwl_mvm_cancel_session_protection(struct iwl_mvm *mvm, struct ieee80211_vif *vif, - u32 id, u32 link_id) + u32 id, s8 link_id) { int mac_link_id = iwl_mvm_get_session_prot_id(mvm, vif, link_id); struct iwl_mvm_session_prot_cmd cmd = { @@ -745,7 +745,7 @@ static bool __iwl_mvm_remove_time_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif = te_data->vif; struct iwl_mvm_vif *mvmvif; enum nl80211_iftype iftype; - unsigned int link_id; + s8 link_id; if (!vif) return false; @@ -929,7 +929,7 @@ void iwl_mvm_rx_session_protect_notif(struct iwl_mvm *mvm, if (WARN(ver > 2 && mvmvif->time_event_data.link_id >= 0 && mvmvif->time_event_data.link_id != notif_link_id, - "SESION_PROTECTION_NOTIF was received for link %u, while the current time event is on link %u\n", + "SESSION_PROTECTION_NOTIF was received for link %u, while the current time event is on link %u\n", notif_link_id, mvmvif->time_event_data.link_id)) goto out_unlock; @@ -986,6 +986,86 @@ void iwl_mvm_rx_session_protect_notif(struct iwl_mvm *mvm, rcu_read_unlock(); } +#define AUX_ROC_MIN_DURATION MSEC_TO_TU(100) +#define AUX_ROC_MIN_DELAY MSEC_TO_TU(200) +#define AUX_ROC_MAX_DELAY MSEC_TO_TU(600) +#define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20) +#define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10) + +void iwl_mvm_roc_duration_and_delay(struct ieee80211_vif *vif, + u32 duration_ms, + u32 *duration_tu, + u32 *delay) +{ + u32 dtim_interval = vif->bss_conf.dtim_period * + vif->bss_conf.beacon_int; + + *delay = AUX_ROC_MIN_DELAY; + *duration_tu = MSEC_TO_TU(duration_ms); + + /* + * If we are associated we want the delay time to be at least one + * dtim interval so that the FW can wait until after the DTIM and + * then start the time event, this will potentially allow us to + * remain off-channel for the max duration. + * Since we want to use almost a whole dtim interval we would also + * like the delay to be for 2-3 dtim intervals, in case there are + * other time events with higher priority. + */ + if (vif->cfg.assoc) { + *delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY); + /* We cannot remain off-channel longer than the DTIM interval */ + if (dtim_interval <= *duration_tu) { + *duration_tu = dtim_interval - AUX_ROC_SAFETY_BUFFER; + if (*duration_tu <= AUX_ROC_MIN_DURATION) + *duration_tu = dtim_interval - + AUX_ROC_MIN_SAFETY_BUFFER; + } + } +} + +int iwl_mvm_roc_add_cmd(struct iwl_mvm *mvm, + struct ieee80211_channel *channel, + struct ieee80211_vif *vif, + int duration, u32 activity) +{ + int res; + u32 duration_tu, delay; + struct iwl_roc_req roc_req = { + .action = cpu_to_le32(FW_CTXT_ACTION_ADD), + .activity = cpu_to_le32(activity), + .sta_id = cpu_to_le32(mvm->aux_sta.sta_id), + }; + + lockdep_assert_held(&mvm->mutex); + + /* Set the channel info data */ + iwl_mvm_set_chan_info(mvm, &roc_req.channel_info, + channel->hw_value, + iwl_mvm_phy_band_from_nl80211(channel->band), + IWL_PHY_CHANNEL_MODE20, 0); + + iwl_mvm_roc_duration_and_delay(vif, duration, &duration_tu, + &delay); + roc_req.duration = cpu_to_le32(duration_tu); + roc_req.max_delay = cpu_to_le32(delay); + + IWL_DEBUG_TE(mvm, + "\t(requested = %ums, max_delay = %ums)\n", + duration, delay); + IWL_DEBUG_TE(mvm, + "Requesting to remain on channel %u for %utu\n", + channel->hw_value, duration_tu); + + /* Set the node address */ + memcpy(roc_req.node_addr, vif->addr, ETH_ALEN); + + res = iwl_mvm_send_cmd_pdu(mvm, WIDE_ID(MAC_CONF_GROUP, ROC_CMD), + 0, sizeof(roc_req), &roc_req); + + return res; +} + static int iwl_mvm_start_p2p_roc_session_protection(struct iwl_mvm *mvm, struct ieee80211_vif *vif, @@ -1296,7 +1376,7 @@ void iwl_mvm_schedule_session_protection(struct iwl_mvm *mvm, struct iwl_mvm_time_event_data *te_data = &mvmvif->time_event_data; const u16 notif[] = { WIDE_ID(MAC_CONF_GROUP, SESSION_PROTECTION_NOTIF) }; struct iwl_notification_wait wait_notif; - int mac_link_id = iwl_mvm_get_session_prot_id(mvm, vif, link_id); + int mac_link_id = iwl_mvm_get_session_prot_id(mvm, vif, (s8)link_id); struct iwl_mvm_session_prot_cmd cmd = { .id_and_color = cpu_to_le32(mac_link_id), .action = cpu_to_le32(FW_CTXT_ACTION_ADD), |