diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/pcie/rx.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/rx.c | 32 |
1 files changed, 27 insertions, 5 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c index 8c29071cb415..72d1cf27e6a4 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c @@ -1427,7 +1427,8 @@ static void iwl_pcie_rx_handle_rb(struct iwl_trans *trans, } static struct iwl_rx_mem_buffer *iwl_pcie_get_rxb(struct iwl_trans *trans, - struct iwl_rxq *rxq, int i) + struct iwl_rxq *rxq, int i, + bool *join) { struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); struct iwl_rx_mem_buffer *rxb; @@ -1441,10 +1442,12 @@ static struct iwl_rx_mem_buffer *iwl_pcie_get_rxb(struct iwl_trans *trans, return rxb; } - if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) + if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) { vid = le16_to_cpu(rxq->cd[i].rbid); - else + *join = rxq->cd[i].flags & IWL_RX_CD_FLAGS_FRAGMENTED; + } else { vid = le32_to_cpu(rxq->bd_32[i]) & 0x0FFF; /* 12-bit VID */ + } if (!vid || vid > RX_POOL_SIZE(trans_pcie->num_rx_bufs)) goto out_err; @@ -1502,6 +1505,7 @@ restart: u32 rb_pending_alloc = atomic_read(&trans_pcie->rba.req_pending) * RX_CLAIM_REQ_ALLOC; + bool join = false; if (unlikely(rb_pending_alloc >= rxq->queue_size / 2 && !emergency)) { @@ -1514,11 +1518,29 @@ restart: IWL_DEBUG_RX(trans, "Q %d: HW = %d, SW = %d\n", rxq->id, r, i); - rxb = iwl_pcie_get_rxb(trans, rxq, i); + rxb = iwl_pcie_get_rxb(trans, rxq, i, &join); if (!rxb) goto out; - iwl_pcie_rx_handle_rb(trans, rxq, rxb, emergency, i); + if (unlikely(join || rxq->next_rb_is_fragment)) { + rxq->next_rb_is_fragment = join; + /* + * We can only get a multi-RB in the following cases: + * - firmware issue, sending a too big notification + * - sniffer mode with a large A-MSDU + * - large MTU frames (>2k) + * since the multi-RB functionality is limited to newer + * hardware that cannot put multiple entries into a + * single RB. + * + * Right now, the higher layers aren't set up to deal + * with that, so discard all of these. + */ + list_add_tail(&rxb->list, &rxq->rx_free); + rxq->free_count++; + } else { + iwl_pcie_rx_handle_rb(trans, rxq, rxb, emergency, i); + } i = (i + 1) & (rxq->queue_size - 1); |