diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/sta.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/sta.c | 93 |
1 files changed, 65 insertions, 28 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c index c4a343534c5e..c19f98489d4e 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c @@ -252,9 +252,11 @@ int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta, return ret; } -static void iwl_mvm_rx_agg_session_expired(unsigned long data) +static void iwl_mvm_rx_agg_session_expired(struct timer_list *t) { - struct iwl_mvm_baid_data __rcu **rcu_ptr = (void *)data; + struct iwl_mvm_baid_data *data = + from_timer(data, t, session_timer); + struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr; struct iwl_mvm_baid_data *ba_data; struct ieee80211_sta *sta; struct iwl_mvm_sta *mvm_sta; @@ -644,8 +646,7 @@ int iwl_mvm_scd_queue_redirect(struct iwl_mvm *mvm, int queue, int tid, /* Redirect to lower AC */ iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac], - cmd.sta_id, tid, LINK_QUAL_AGG_FRAME_LIMIT_DEF, - ssn); + cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn); /* Update AC marking of the queue */ spin_lock_bh(&mvm->queue_info_lock); @@ -1258,6 +1259,14 @@ static void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm, mvm_sta->sta_id, i, wdg_timeout); tid_data->txq_id = txq_id; + + /* + * Since we don't set the seq number after reset, and HW + * sets it now, FW reset will cause the seq num to start + * at 0 again, so driver will need to update it + * internally as well, so it keeps in sync with real val + */ + tid_data->seq_number = 0; } else { u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number); @@ -2104,6 +2113,8 @@ static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, int j; struct iwl_mvm_reorder_buffer *reorder_buf = &data->reorder_buf[i]; + struct iwl_mvm_reorder_buf_entry *entries = + &data->entries[i * data->entries_per_queue]; spin_lock_bh(&reorder_buf->lock); if (likely(!reorder_buf->num_stored)) { @@ -2119,7 +2130,7 @@ static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, WARN_ON(1); for (j = 0; j < reorder_buf->buf_size; j++) - __skb_queue_purge(&reorder_buf->entries[j]); + __skb_queue_purge(&entries[j].e.frames); /* * Prevent timer re-arm. This prevents a very far fetched case * where we timed out on the notification. There may be prior @@ -2135,7 +2146,6 @@ static void iwl_mvm_free_reorder(struct iwl_mvm *mvm, } static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, - u32 sta_id, struct iwl_mvm_baid_data *data, u16 ssn, u8 buf_size) { @@ -2144,23 +2154,22 @@ static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm, for (i = 0; i < mvm->trans->num_rx_queues; i++) { struct iwl_mvm_reorder_buffer *reorder_buf = &data->reorder_buf[i]; + struct iwl_mvm_reorder_buf_entry *entries = + &data->entries[i * data->entries_per_queue]; int j; reorder_buf->num_stored = 0; reorder_buf->head_sn = ssn; reorder_buf->buf_size = buf_size; /* rx reorder timer */ - reorder_buf->reorder_timer.function = - iwl_mvm_reorder_timer_expired; - reorder_buf->reorder_timer.data = (unsigned long)reorder_buf; - init_timer(&reorder_buf->reorder_timer); + timer_setup(&reorder_buf->reorder_timer, + iwl_mvm_reorder_timer_expired, 0); spin_lock_init(&reorder_buf->lock); reorder_buf->mvm = mvm; reorder_buf->queue = i; - reorder_buf->sta_id = sta_id; reorder_buf->valid = false; for (j = 0; j < reorder_buf->buf_size; j++) - __skb_queue_head_init(&reorder_buf->entries[j]); + __skb_queue_head_init(&entries[j].e.frames); } } @@ -2181,16 +2190,44 @@ int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, } if (iwl_mvm_has_new_rx_api(mvm) && start) { + u16 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]); + + /* sparse doesn't like the __align() so don't check */ +#ifndef __CHECKER__ + /* + * The division below will be OK if either the cache line size + * can be divided by the entry size (ALIGN will round up) or if + * if the entry size can be divided by the cache line size, in + * which case the ALIGN() will do nothing. + */ + BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) && + sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES); +#endif + + /* + * Upward align the reorder buffer size to fill an entire cache + * line for each queue, to avoid sharing cache lines between + * different queues. + */ + reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES); + /* * Allocate here so if allocation fails we can bail out early * before starting the BA session in the firmware */ baid_data = kzalloc(sizeof(*baid_data) + mvm->trans->num_rx_queues * - sizeof(baid_data->reorder_buf[0]), + reorder_buf_size, GFP_KERNEL); if (!baid_data) return -ENOMEM; + + /* + * This division is why we need the above BUILD_BUG_ON(), + * if that doesn't hold then this will not be right. + */ + baid_data->entries_per_queue = + reorder_buf_size / sizeof(baid_data->entries[0]); } cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color); @@ -2249,9 +2286,9 @@ int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, baid_data->baid = baid; baid_data->timeout = timeout; baid_data->last_rx = jiffies; - setup_timer(&baid_data->session_timer, - iwl_mvm_rx_agg_session_expired, - (unsigned long)&mvm->baid_map[baid]); + baid_data->rcu_ptr = &mvm->baid_map[baid]; + timer_setup(&baid_data->session_timer, + iwl_mvm_rx_agg_session_expired, 0); baid_data->mvm = mvm; baid_data->tid = tid; baid_data->sta_id = mvm_sta->sta_id; @@ -2261,8 +2298,7 @@ int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta, mod_timer(&baid_data->session_timer, TU_TO_EXP_TIME(timeout * 2)); - iwl_mvm_init_reorder_buffer(mvm, mvm_sta->sta_id, - baid_data, ssn, buf_size); + iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn, buf_size); /* * protect the BA data with RCU to cover a case where our * internal RX sync mechanism will timeout (not that it's @@ -2515,12 +2551,6 @@ int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE) != IWL_MAX_TID_COUNT); - if (!mvm->trans->cfg->gen2) - buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); - else - buf_size = min_t(int, buf_size, - LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF); - spin_lock_bh(&mvmsta->lock); ssn = tid_data->ssn; queue = tid_data->txq_id; @@ -2532,10 +2562,17 @@ int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, if (iwl_mvm_has_new_tx_api(mvm)) { /* - * If no queue iwl_mvm_sta_tx_agg_start() would have failed so - * no need to check queue's status + * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start() + * would have failed, so if we are here there is no need to + * allocate a queue. + * However, if aggregation size is different than the default + * size, the scheduler should be reconfigured. + * We cannot do this with the new TX API, so return unsupported + * for now, until it will be offloaded to firmware.. + * Note that if SCD default value changes - this condition + * should be updated as well. */ - if (buf_size < mvmsta->max_agg_bufsize) + if (buf_size < IWL_FRAME_LIMIT) return -ENOTSUPP; ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true); @@ -2558,7 +2595,7 @@ int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif, * Only reconfig the SCD for the queue if the window size has * changed from current (become smaller) */ - if (!alloc_queue && buf_size < mvmsta->max_agg_bufsize) { + if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) { /* * If reconfiguring an existing queue, it first must be * drained |