diff options
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/rx.c | 59 |
1 files changed, 33 insertions, 26 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c index 98524a006f7a..4be3c35afd19 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c @@ -231,6 +231,9 @@ static void iwl_pcie_rxq_check_wrptr(struct iwl_trans *trans) } } +/* + * iwl_pcie_rxq_mq_restock - restock implementation for multi-queue rx + */ static void iwl_pcie_rxq_mq_restock(struct iwl_trans *trans, struct iwl_rxq *rxq) { @@ -277,17 +280,10 @@ static void iwl_pcie_rxq_mq_restock(struct iwl_trans *trans, } /* - * iwl_pcie_rxq_restock - refill RX queue from pre-allocated pool - * - * If there are slots in the RX queue that need to be restocked, - * and we have free pre-allocated buffers, fill the ranks as much - * as we can, pulling from rx_free. - * - * This moves the 'write' index forward to catch up with 'processed', and - * also updates the memory address in the firmware to reference the new - * target buffer. + * iwl_pcie_rxq_sq_restock - restock implementation for single queue rx */ -static void iwl_pcie_rxq_restock(struct iwl_trans *trans, struct iwl_rxq *rxq) +static void iwl_pcie_rxq_sq_restock(struct iwl_trans *trans, + struct iwl_rxq *rxq) { struct iwl_rx_mem_buffer *rxb; @@ -332,6 +328,26 @@ static void iwl_pcie_rxq_restock(struct iwl_trans *trans, struct iwl_rxq *rxq) } /* + * iwl_pcie_rxq_restock - refill RX queue from pre-allocated pool + * + * If there are slots in the RX queue that need to be restocked, + * and we have free pre-allocated buffers, fill the ranks as much + * as we can, pulling from rx_free. + * + * This moves the 'write' index forward to catch up with 'processed', and + * also updates the memory address in the firmware to reference the new + * target buffer. + */ +static +void iwl_pcie_rxq_restock(struct iwl_trans *trans, struct iwl_rxq *rxq) +{ + if (trans->cfg->mq_rx_supported) + iwl_pcie_rxq_mq_restock(trans, rxq); + else + iwl_pcie_rxq_sq_restock(trans, rxq); +} + +/* * iwl_pcie_rx_alloc_page - allocates and returns a page. * */ @@ -907,7 +923,7 @@ int iwl_pcie_rx_init(struct iwl_trans *trans) if (trans->cfg->mq_rx_supported) { iwl_pcie_rx_mq_hw_init(trans); } else { - iwl_pcie_rxq_restock(trans, def_rxq); + iwl_pcie_rxq_sq_restock(trans, def_rxq); iwl_pcie_rx_hw_init(trans, def_rxq); } @@ -1222,24 +1238,13 @@ restart: count = 0; if (rxq->used_count < rxq->queue_size / 3) emergency = false; + + rxq->read = i; spin_unlock(&rxq->lock); iwl_pcie_rxq_alloc_rbs(trans, GFP_ATOMIC, rxq); - spin_lock(&rxq->lock); - } - } - /* handle restock for three cases, can be all of them at once: - * - we just pulled buffers from the allocator - * - we have 8+ unstolen pages accumulated - * - we are in emergency and allocated buffers - */ - if (rxq->free_count >= RX_CLAIM_REQ_ALLOC) { - rxq->read = i; - spin_unlock(&rxq->lock); - if (trans->cfg->mq_rx_supported) - iwl_pcie_rxq_mq_restock(trans, rxq); - else iwl_pcie_rxq_restock(trans, rxq); - goto restart; + goto restart; + } } } out: @@ -1264,6 +1269,8 @@ out: if (rxq->napi.poll) napi_gro_flush(&rxq->napi, false); + + iwl_pcie_rxq_restock(trans, rxq); } static struct iwl_trans_pcie *iwl_pcie_get_trans_pcie(struct msix_entry *entry) |