diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/tx.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/tx.c | 34 |
1 files changed, 30 insertions, 4 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c index 4ba7ff44420d..90c33ee69f21 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/tx.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/tx.c @@ -1282,6 +1282,26 @@ static void iwl_mvm_tx_status_check_trigger(struct iwl_mvm *mvm, } } +/** + * iwl_mvm_get_scd_ssn - returns the SSN of the SCD + * @tx_resp: the Tx response from the fw (agg or non-agg) + * + * When the fw sends an AMPDU, it fetches the MPDUs one after the other. Since + * it can't know that everything will go well until the end of the AMPDU, it + * can't know in advance the number of MPDUs that will be sent in the current + * batch. This is why it writes the agg Tx response while it fetches the MPDUs. + * Hence, it can't know in advance what the SSN of the SCD will be at the end + * of the batch. This is why the SSN of the SCD is written at the end of the + * whole struct at a variable offset. This function knows how to cope with the + * variable offset and returns the SSN of the SCD. + */ +static inline u32 iwl_mvm_get_scd_ssn(struct iwl_mvm *mvm, + struct iwl_mvm_tx_resp *tx_resp) +{ + return le32_to_cpup((__le32 *)iwl_mvm_get_agg_status(mvm, tx_resp) + + tx_resp->frame_count) & 0xfff; +} + static void iwl_mvm_rx_tx_cmd_single(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt) { @@ -1291,8 +1311,10 @@ static void iwl_mvm_rx_tx_cmd_single(struct iwl_mvm *mvm, struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data; int sta_id = IWL_MVM_TX_RES_GET_RA(tx_resp->ra_tid); int tid = IWL_MVM_TX_RES_GET_TID(tx_resp->ra_tid); - u32 status = le16_to_cpu(tx_resp->status.status); - u16 ssn = iwl_mvm_get_scd_ssn(tx_resp); + struct agg_tx_status *agg_status = + iwl_mvm_get_agg_status(mvm, tx_resp); + u32 status = le16_to_cpu(agg_status->status); + u16 ssn = iwl_mvm_get_scd_ssn(mvm, tx_resp); struct iwl_mvm_sta *mvmsta; struct sk_buff_head skbs; u8 skb_freed = 0; @@ -1301,6 +1323,9 @@ static void iwl_mvm_rx_tx_cmd_single(struct iwl_mvm *mvm, __skb_queue_head_init(&skbs); + if (iwl_mvm_has_new_tx_api(mvm)) + txq_id = le16_to_cpu(tx_resp->v6.tx_queue); + seq_ctl = le16_to_cpu(tx_resp->seq_ctl); /* we can free until ssn % q.n_bd not inclusive */ @@ -1557,7 +1582,8 @@ static void iwl_mvm_rx_tx_cmd_agg_dbg(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt) { struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data; - struct agg_tx_status *frame_status = &tx_resp->status; + struct agg_tx_status *frame_status = + iwl_mvm_get_agg_status(mvm, tx_resp); int i; for (i = 0; i < tx_resp->frame_count; i++) { @@ -1772,7 +1798,7 @@ void iwl_mvm_rx_ba_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) if (tid == IWL_MGMT_TID) tid = IWL_MAX_TID_COUNT; iwl_mvm_tx_reclaim(mvm, sta_id, tid, - (int)ba_res->tfd[0].q_num, + (int)(le16_to_cpu(ba_res->tfd[0].q_num)), le16_to_cpu(ba_res->tfd[0].tfd_index), &ba_info, le32_to_cpu(ba_res->tx_rate)); |