diff options
Diffstat (limited to 'drivers/net/e1000')
| -rw-r--r-- | drivers/net/e1000/e1000_main.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index 479915a9f0f..e54890aff5f 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -1777,6 +1777,15 @@ e1000_tx_map(struct e1000_adapter *adapter, struct sk_buff *skb, if(unlikely(mss && !nr_frags && size == len && size > 8)) size -= 4; #endif + /* work-around for errata 10 and it applies + * to all controllers in PCI-X mode + * The fix is to make sure that the first descriptor of a + * packet is smaller than 2048 - 16 - 16 (or 2016) bytes + */ + if(unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && + (size > 2015) && count == 0)) + size = 2015; + /* Workaround for potential 82544 hang in PCI-X. Avoid * terminating buffers within evenly-aligned dwords. */ if(unlikely(adapter->pcix_82544 && @@ -1979,6 +1988,13 @@ e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) if(adapter->pcix_82544) count++; + /* work-around for errata 10 and it applies to all controllers + * in PCI-X mode, so add one more descriptor to the count + */ + if(unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && + (len > 2015))) + count++; + nr_frags = skb_shinfo(skb)->nr_frags; for(f = 0; f < nr_frags; f++) count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, |