diff options
Diffstat (limited to 'drivers/net/e1000/e1000_main.c')
| -rw-r--r-- | drivers/net/e1000/e1000_main.c | 64 |
1 files changed, 24 insertions, 40 deletions
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index e0ae248b4313..438a931fd55d 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -711,6 +711,7 @@ e1000_probe(struct pci_dev *pdev, break; case e1000_82546: case e1000_82546_rev_3: + case e1000_82571: if((E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1) && (adapter->hw.media_type == e1000_media_type_copper)) { e1000_read_eeprom(&adapter->hw, @@ -1158,7 +1159,6 @@ e1000_setup_tx_resources(struct e1000_adapter *adapter, return -ENOMEM; } memset(txdr->buffer_info, 0, size); - memset(&txdr->previous_buffer_info, 0, sizeof(struct e1000_buffer)); /* round up to nearest 4K */ @@ -1813,11 +1813,6 @@ e1000_clean_tx_ring(struct e1000_adapter *adapter, /* Free all the Tx ring sk_buffs */ - if (likely(tx_ring->previous_buffer_info.skb != NULL)) { - e1000_unmap_and_free_tx_resource(adapter, - &tx_ring->previous_buffer_info); - } - for(i = 0; i < tx_ring->count; i++) { buffer_info = &tx_ring->buffer_info[i]; e1000_unmap_and_free_tx_resource(adapter, buffer_info); @@ -1832,6 +1827,7 @@ e1000_clean_tx_ring(struct e1000_adapter *adapter, tx_ring->next_to_use = 0; tx_ring->next_to_clean = 0; + tx_ring->last_tx_tso = 0; writel(0, adapter->hw.hw_addr + tx_ring->tdh); writel(0, adapter->hw.hw_addr + tx_ring->tdt); @@ -2437,6 +2433,16 @@ e1000_tx_map(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, buffer_info = &tx_ring->buffer_info[i]; size = min(len, max_per_txd); #ifdef NETIF_F_TSO + /* Workaround for Controller erratum -- + * descriptor for non-tso packet in a linear SKB that follows a + * tso gets written back prematurely before the data is fully + * DMAd to the controller */ + if (!skb->data_len && tx_ring->last_tx_tso && + !skb_shinfo(skb)->tso_size) { + tx_ring->last_tx_tso = 0; + size -= 4; + } + /* Workaround for premature desc write-backs * in TSO mode. Append 4-byte sentinel desc */ if(unlikely(mss && !nr_frags && size == len && size > 8)) @@ -2693,6 +2699,14 @@ e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) if(skb->ip_summed == CHECKSUM_HW) count++; #endif + +#ifdef NETIF_F_TSO + /* Controller Erratum workaround */ + if (!skb->data_len && tx_ring->last_tx_tso && + !skb_shinfo(skb)->tso_size) + count++; +#endif + count += TXD_USE_COUNT(len, max_txd_pwr); if(adapter->pcix_82544) @@ -2774,9 +2788,10 @@ e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) return NETDEV_TX_OK; } - if (likely(tso)) + if (likely(tso)) { + tx_ring->last_tx_tso = 1; tx_flags |= E1000_TX_FLAGS_TSO; - else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) + } else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) tx_flags |= E1000_TX_FLAGS_CSUM; /* Old method was to assume IPv4 packet by default if TSO was enabled. @@ -3227,37 +3242,12 @@ e1000_clean_tx_irq(struct e1000_adapter *adapter, eop_desc = E1000_TX_DESC(*tx_ring, eop); while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) { - /* Premature writeback of Tx descriptors clear (free buffers - * and unmap pci_mapping) previous_buffer_info */ - if (likely(tx_ring->previous_buffer_info.skb != NULL)) { - e1000_unmap_and_free_tx_resource(adapter, - &tx_ring->previous_buffer_info); - } - for(cleaned = FALSE; !cleaned; ) { tx_desc = E1000_TX_DESC(*tx_ring, i); buffer_info = &tx_ring->buffer_info[i]; cleaned = (i == eop); -#ifdef NETIF_F_TSO - if (!(netdev->features & NETIF_F_TSO)) { -#endif - e1000_unmap_and_free_tx_resource(adapter, - buffer_info); -#ifdef NETIF_F_TSO - } else { - if (cleaned) { - memcpy(&tx_ring->previous_buffer_info, - buffer_info, - sizeof(struct e1000_buffer)); - memset(buffer_info, 0, - sizeof(struct e1000_buffer)); - } else { - e1000_unmap_and_free_tx_resource( - adapter, buffer_info); - } - } -#endif + e1000_unmap_and_free_tx_resource(adapter, buffer_info); tx_desc->buffer_addr = 0; tx_desc->lower.data = 0; @@ -3318,12 +3308,6 @@ e1000_clean_tx_irq(struct e1000_adapter *adapter, netif_stop_queue(netdev); } } -#ifdef NETIF_F_TSO - if (unlikely(!(eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && - time_after(jiffies, tx_ring->previous_buffer_info.time_stamp + HZ))) - e1000_unmap_and_free_tx_resource( - adapter, &tx_ring->previous_buffer_info); -#endif return cleaned; } |