diff options
| -rw-r--r-- | drivers/net/igbvf/igbvf.h | 1 | ||||
| -rw-r--r-- | drivers/net/igbvf/netdev.c | 65 |
2 files changed, 52 insertions, 14 deletions
diff --git a/drivers/net/igbvf/igbvf.h b/drivers/net/igbvf/igbvf.h index 8e9b67ebbf8..3d1ee7a8478 100644 --- a/drivers/net/igbvf/igbvf.h +++ b/drivers/net/igbvf/igbvf.h @@ -117,6 +117,7 @@ struct igbvf_buffer { unsigned long time_stamp; u16 length; u16 next_to_watch; + u16 mapped_as_page; }; /* Rx */ struct { diff --git a/drivers/net/igbvf/netdev.c b/drivers/net/igbvf/netdev.c index e01f44597a2..cf26f92e323 100644 --- a/drivers/net/igbvf/netdev.c +++ b/drivers/net/igbvf/netdev.c @@ -366,10 +366,20 @@ next_desc: static void igbvf_put_txbuf(struct igbvf_adapter *adapter, struct igbvf_buffer *buffer_info) { - buffer_info->dma = 0; + if (buffer_info->dma) { + if (buffer_info->mapped_as_page) + pci_unmap_page(adapter->pdev, + buffer_info->dma, + buffer_info->length, + PCI_DMA_TODEVICE); + else + pci_unmap_single(adapter->pdev, + buffer_info->dma, + buffer_info->length, + PCI_DMA_TODEVICE); + buffer_info->dma = 0; + } if (buffer_info->skb) { - skb_dma_unmap(&adapter->pdev->dev, buffer_info->skb, - DMA_TO_DEVICE); dev_kfree_skb_any(buffer_info->skb); buffer_info->skb = NULL; } @@ -2088,27 +2098,24 @@ static inline int igbvf_tx_map_adv(struct igbvf_adapter *adapter, unsigned int first) { struct igbvf_buffer *buffer_info; + struct pci_dev *pdev = adapter->pdev; unsigned int len = skb_headlen(skb); unsigned int count = 0, i; unsigned int f; - dma_addr_t *map; i = tx_ring->next_to_use; - if (skb_dma_map(&adapter->pdev->dev, skb, DMA_TO_DEVICE)) { - dev_err(&adapter->pdev->dev, "TX DMA map failed\n"); - return 0; - } - - map = skb_shinfo(skb)->dma_maps; - buffer_info = &tx_ring->buffer_info[i]; BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD); buffer_info->length = len; /* set time_stamp *before* dma to help avoid a possible race */ buffer_info->time_stamp = jiffies; buffer_info->next_to_watch = i; - buffer_info->dma = skb_shinfo(skb)->dma_head; + buffer_info->dma = pci_map_single(pdev, skb->data, len, + PCI_DMA_TODEVICE); + if (pci_dma_mapping_error(pdev, buffer_info->dma)) + goto dma_error; + for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) { struct skb_frag_struct *frag; @@ -2125,14 +2132,44 @@ static inline int igbvf_tx_map_adv(struct igbvf_adapter *adapter, buffer_info->length = len; buffer_info->time_stamp = jiffies; buffer_info->next_to_watch = i; - buffer_info->dma = map[count]; + buffer_info->mapped_as_page = true; + buffer_info->dma = pci_map_page(pdev, + frag->page, + frag->page_offset, + len, + PCI_DMA_TODEVICE); + if (pci_dma_mapping_error(pdev, buffer_info->dma)) + goto dma_error; count++; } tx_ring->buffer_info[i].skb = skb; tx_ring->buffer_info[first].next_to_watch = i; - return count + 1; + return ++count; + +dma_error: + dev_err(&pdev->dev, "TX DMA map failed\n"); + + /* clear timestamp and dma mappings for failed buffer_info mapping */ + buffer_info->dma = 0; + buffer_info->time_stamp = 0; + buffer_info->length = 0; + buffer_info->next_to_watch = 0; + buffer_info->mapped_as_page = false; + count--; + + /* clear timestamp and dma mappings for remaining portion of packet */ + while (count >= 0) { + count--; + i--; + if (i < 0) + i += tx_ring->count; + buffer_info = &tx_ring->buffer_info[i]; + igbvf_put_txbuf(adapter, buffer_info); + } + + return 0; } static inline void igbvf_tx_queue_adv(struct igbvf_adapter *adapter, |