iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

iwlwifi: mvm: handle iwl_mvm_tvqm_enable_txq() error return

Browse Source 
iwl_mvm_tvqm_enable_txq() can return an error, notably if unable
to allocate memory for the queue. Handle this error throughout,
avoiding storing the invalid value into a u16 which later leads
to a disable of an invalid queue ("queue 65524 not used", where
65524 is just -ENOMEM in a u16).

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Johannes Berg 2019-10-19 13:03:29 +03:00 committed by Kalle Valo
parent e55890150a
commit 91cf5dede5
1 changed files with 84 additions and 58 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

142
drivers/net/wireless/intel/iwlwifi/mvm/sta.c
View File

@ -1482,6 +1482,13 @@ static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm,
mvm_sta->sta_id, i);
txq_id = iwl_mvm_tvqm_enable_txq(mvm, mvm_sta->sta_id,
i, wdg);
/*
* on failures, just set it to IWL_MVM_INVALID_QUEUE
* to try again later, we have no other good way of
* failing here
*/
if (txq_id < 0)
txq_id = IWL_MVM_INVALID_QUEUE;
tid_data->txq_id = txq_id;
/*
@ -1950,30 +1957,73 @@ void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta)
sta->sta_id = IWL_MVM_INVALID_STA;
}
static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 *queue,
static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue,
u8 sta_id, u8 fifo)
{
unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ?
mvm->trans->trans_cfg->base_params->wd_timeout :
IWL_WATCHDOG_DISABLED;
struct iwl_trans_txq_scd_cfg cfg = {
.fifo = fifo,
.sta_id = sta_id,
.tid = IWL_MAX_TID_COUNT,
.aggregate = false,
.frame_limit = IWL_FRAME_LIMIT,
};
if (iwl_mvm_has_new_tx_api(mvm)) {
int tvqm_queue =
iwl_mvm_tvqm_enable_txq(mvm, sta_id,
IWL_MAX_TID_COUNT,
wdg_timeout);
*queue = tvqm_queue;
} else {
struct iwl_trans_txq_scd_cfg cfg = {
.fifo = fifo,
.sta_id = sta_id,
.tid = IWL_MAX_TID_COUNT,
.aggregate = false,
.frame_limit = IWL_FRAME_LIMIT,
};
WARN_ON(iwl_mvm_has_new_tx_api(mvm));
iwl_mvm_enable_txq(mvm, NULL, *queue, 0, &cfg, wdg_timeout);
iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout);
}
static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id)
{
unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ?
mvm->trans->trans_cfg->base_params->wd_timeout :
IWL_WATCHDOG_DISABLED;
WARN_ON(!iwl_mvm_has_new_tx_api(mvm));
return iwl_mvm_tvqm_enable_txq(mvm, sta_id, IWL_MAX_TID_COUNT,
wdg_timeout);
}
static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx,
int maccolor,
struct iwl_mvm_int_sta *sta,
u16 *queue, int fifo)
{
int ret;
/* Map queue to fifo - needs to happen before adding station */
if (!iwl_mvm_has_new_tx_api(mvm))
iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo);
ret = iwl_mvm_add_int_sta_common(mvm, sta, NULL, macidx, maccolor);
if (ret) {
if (!iwl_mvm_has_new_tx_api(mvm))
iwl_mvm_disable_txq(mvm, NULL, *queue,
IWL_MAX_TID_COUNT, 0);
return ret;
}
/*
* For 22000 firmware and on we cannot add queue to a station unknown
* to firmware so enable queue here - after the station was added
*/
if (iwl_mvm_has_new_tx_api(mvm)) {
int txq;
txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id);
if (txq < 0) {
iwl_mvm_rm_sta_common(mvm, sta->sta_id);
return txq;
}
*queue = txq;
}
return 0;
}
int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm)
@ -1989,59 +2039,26 @@ int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm)
if (ret)
return ret;
/* Map Aux queue to fifo - needs to happen before adding Aux station */
if (!iwl_mvm_has_new_tx_api(mvm))
iwl_mvm_enable_aux_snif_queue(mvm, &mvm->aux_queue,
mvm->aux_sta.sta_id,
IWL_MVM_TX_FIFO_MCAST);
ret = iwl_mvm_add_int_sta_common(mvm, &mvm->aux_sta, NULL,
MAC_INDEX_AUX, 0);
ret = iwl_mvm_add_int_sta_with_queue(mvm, MAC_INDEX_AUX, 0,
&mvm->aux_sta, &mvm->aux_queue,
IWL_MVM_TX_FIFO_MCAST);
if (ret) {
iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
return ret;
}
/*
* For 22000 firmware and on we cannot add queue to a station unknown
* to firmware so enable queue here - after the station was added
*/
if (iwl_mvm_has_new_tx_api(mvm))
iwl_mvm_enable_aux_snif_queue(mvm, &mvm->aux_queue,
mvm->aux_sta.sta_id,
IWL_MVM_TX_FIFO_MCAST);
return 0;
}
int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int ret;
lockdep_assert_held(&mvm->mutex);
/* Map snif queue to fifo - must happen before adding snif station */
if (!iwl_mvm_has_new_tx_api(mvm))
iwl_mvm_enable_aux_snif_queue(mvm, &mvm->snif_queue,
mvm->snif_sta.sta_id,
return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color,
&mvm->snif_sta, &mvm->snif_queue,
IWL_MVM_TX_FIFO_BE);
ret = iwl_mvm_add_int_sta_common(mvm, &mvm->snif_sta, vif->addr,
mvmvif->id, 0);
if (ret)
return ret;
/*
* For 22000 firmware and on we cannot add queue to a station unknown
* to firmware so enable queue here - after the station was added
*/
if (iwl_mvm_has_new_tx_api(mvm))
iwl_mvm_enable_aux_snif_queue(mvm, &mvm->snif_queue,
mvm->snif_sta.sta_id,
IWL_MVM_TX_FIFO_BE);
return 0;
}
int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
@ -2133,6 +2150,10 @@ int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
queue = iwl_mvm_tvqm_enable_txq(mvm, bsta->sta_id,
IWL_MAX_TID_COUNT,
wdg_timeout);
if (queue < 0) {
iwl_mvm_rm_sta_common(mvm, bsta->sta_id);
return queue;
}
if (vif->type == NL80211_IFTYPE_AP ||
vif->type == NL80211_IFTYPE_ADHOC)
@ -2307,10 +2328,8 @@ int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
}
ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr,
mvmvif->id, mvmvif->color);
if (ret) {
iwl_mvm_dealloc_int_sta(mvm, msta);
return ret;
}
if (ret)
goto err;
/*
* Enable cab queue after the ADD_STA command is sent.
@ -2323,6 +2342,10 @@ int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
int queue = iwl_mvm_tvqm_enable_txq(mvm, msta->sta_id,
0,
timeout);
if (queue < 0) {
ret = queue;
goto err;
}
mvmvif->cab_queue = queue;
} else if (!fw_has_api(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_API_STA_TYPE))
@ -2330,6 +2353,9 @@ int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
timeout);
return 0;
err:
iwl_mvm_dealloc_int_sta(mvm, msta);
return ret;
}
static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id,