From: Emmanuel Grumbach emmanuel.grumbach@intel.com
commit b5b878e36c1836c0195575132cc7c199e5a34a7b upstream.
I changed the API for asking for a session protection but I omitted the TDLS flows. Fix that now. Note that for the TDLS flow, we need to block until the session protection actually starts, so add this option to iwl_mvm_schedule_session_protection. This patch fixes a firmware assert in the TDLS flow since the old TIME_EVENT_CMD is not supported anymore by newer firwmare versions.
Signed-off-by: Emmanuel Grumbach emmanuel.grumbach@intel.com Fixes: fe959c7b2049 ("iwlwifi: mvm: use the new session protection command") Signed-off-by: Luca Coelho luciano.coelho@intel.com Signed-off-by: Kalle Valo kvalo@codeaurora.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c | 2 drivers/net/wireless/intel/iwlwifi/mvm/tdls.c | 10 ++ drivers/net/wireless/intel/iwlwifi/mvm/time-event.c | 71 ++++++++++++++++---- drivers/net/wireless/intel/iwlwifi/mvm/time-event.h | 4 - 4 files changed, 72 insertions(+), 15 deletions(-)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c @@ -3293,7 +3293,7 @@ static void iwl_mvm_mac_mgd_prepare_tx(s if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) iwl_mvm_schedule_session_protection(mvm, vif, 900, - min_duration); + min_duration, false); else iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false); --- a/drivers/net/wireless/intel/iwlwifi/mvm/tdls.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/tdls.c @@ -205,9 +205,15 @@ void iwl_mvm_mac_mgd_protect_tdls_discov struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); u32 duration = 2 * vif->bss_conf.dtim_period * vif->bss_conf.beacon_int;
- mutex_lock(&mvm->mutex); /* Protect the session to hear the TDLS setup response on the channel */ - iwl_mvm_protect_session(mvm, vif, duration, duration, 100, true); + mutex_lock(&mvm->mutex); + if (fw_has_capa(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) + iwl_mvm_schedule_session_protection(mvm, vif, duration, + duration, true); + else + iwl_mvm_protect_session(mvm, vif, duration, + duration, 100, true); mutex_unlock(&mvm->mutex); }
--- a/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/time-event.c @@ -1056,13 +1056,42 @@ int iwl_mvm_schedule_csa_period(struct i return iwl_mvm_time_event_send_add(mvm, vif, te_data, &time_cmd); }
+static bool iwl_mvm_session_prot_notif(struct iwl_notif_wait_data *notif_wait, + struct iwl_rx_packet *pkt, void *data) +{ + struct iwl_mvm *mvm = + container_of(notif_wait, struct iwl_mvm, notif_wait); + struct iwl_mvm_session_prot_notif *resp; + int resp_len = iwl_rx_packet_payload_len(pkt); + + if (WARN_ON(pkt->hdr.cmd != SESSION_PROTECTION_NOTIF || + pkt->hdr.group_id != MAC_CONF_GROUP)) + return true; + + if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { + IWL_ERR(mvm, "Invalid SESSION_PROTECTION_NOTIF response\n"); + return true; + } + + resp = (void *)pkt->data; + + if (!resp->status) + IWL_ERR(mvm, + "TIME_EVENT_NOTIFICATION received but not executed\n"); + + return true; +} + void iwl_mvm_schedule_session_protection(struct iwl_mvm *mvm, struct ieee80211_vif *vif, - u32 duration, u32 min_duration) + u32 duration, u32 min_duration, + bool wait_for_notif) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); struct iwl_mvm_time_event_data *te_data = &mvmvif->time_event_data; - + const u16 notif[] = { iwl_cmd_id(SESSION_PROTECTION_NOTIF, + MAC_CONF_GROUP, 0) }; + struct iwl_notification_wait wait_notif; struct iwl_mvm_session_prot_cmd cmd = { .id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, @@ -1071,7 +1100,6 @@ void iwl_mvm_schedule_session_protection .conf_id = cpu_to_le32(SESSION_PROTECT_CONF_ASSOC), .duration_tu = cpu_to_le32(MSEC_TO_TU(duration)), }; - int ret;
lockdep_assert_held(&mvm->mutex);
@@ -1092,14 +1120,35 @@ void iwl_mvm_schedule_session_protection IWL_DEBUG_TE(mvm, "Add new session protection, duration %d TU\n", le32_to_cpu(cmd.duration_tu));
- ret = iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(SESSION_PROTECTION_CMD, - MAC_CONF_GROUP, 0), - 0, sizeof(cmd), &cmd); - if (ret) { + if (!wait_for_notif) { + if (iwl_mvm_send_cmd_pdu(mvm, + iwl_cmd_id(SESSION_PROTECTION_CMD, + MAC_CONF_GROUP, 0), + 0, sizeof(cmd), &cmd)) { + IWL_ERR(mvm, + "Couldn't send the SESSION_PROTECTION_CMD\n"); + spin_lock_bh(&mvm->time_event_lock); + iwl_mvm_te_clear_data(mvm, te_data); + spin_unlock_bh(&mvm->time_event_lock); + } + + return; + } + + iwl_init_notification_wait(&mvm->notif_wait, &wait_notif, + notif, ARRAY_SIZE(notif), + iwl_mvm_session_prot_notif, NULL); + + if (iwl_mvm_send_cmd_pdu(mvm, + iwl_cmd_id(SESSION_PROTECTION_CMD, + MAC_CONF_GROUP, 0), + 0, sizeof(cmd), &cmd)) { IWL_ERR(mvm, - "Couldn't send the SESSION_PROTECTION_CMD: %d\n", ret); - spin_lock_bh(&mvm->time_event_lock); - iwl_mvm_te_clear_data(mvm, te_data); - spin_unlock_bh(&mvm->time_event_lock); + "Couldn't send the SESSION_PROTECTION_CMD\n"); + iwl_remove_notification(&mvm->notif_wait, &wait_notif); + } else if (iwl_wait_notification(&mvm->notif_wait, &wait_notif, + TU_TO_JIFFIES(100))) { + IWL_ERR(mvm, + "Failed to protect session until session protection\n"); } } --- a/drivers/net/wireless/intel/iwlwifi/mvm/time-event.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/time-event.h @@ -250,10 +250,12 @@ iwl_mvm_te_scheduled(struct iwl_mvm_time * @mvm: the mvm component * @vif: the virtual interface for which the protection issued * @duration: the duration of the protection + * @wait_for_notif: if true, will block until the start of the protection */ void iwl_mvm_schedule_session_protection(struct iwl_mvm *mvm, struct ieee80211_vif *vif, - u32 duration, u32 min_duration); + u32 duration, u32 min_duration, + bool wait_for_notif);
/** * iwl_mvm_rx_session_protect_notif - handles %SESSION_PROTECTION_NOTIF