diff options
| author |   Michael Chan <michael.chan@broadcom.com> | 2017-02-06 16:55:34 -0500 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-02-07 13:30:58 -0500 |
| commit | 745fc05c9db1f17da076861c7f57507e13f28a3a (patch) | |
| tree | 08c600ebfd4e16ead77382bc606bf631d349ee4f /drivers/net/ethernet/broadcom/bnxt | |
| parent | bnxt_en: Don't use DEFINE_DMA_UNMAP_ADDR to store DMA address in RX path. (diff) | |
| download | linux-dev-745fc05c9db1f17da076861c7f57507e13f28a3a.tar.xz linux-dev-745fc05c9db1f17da076861c7f57507e13f28a3a.zip | |
bnxt_en: Add bp->rx_dir field for rx buffer DMA direction.
When driver is running in XDP mode, rx buffers are DMA mapped as
DMA_BIDIRECTIONAL. Add a field so the code will map/unmap rx buffers
according to this field.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/broadcom/bnxt')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.c | 27 | ||||
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.h | 1 |
2 files changed, 13 insertions, 15 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 43eb52ced2ca..ee2cada76f0f 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -584,7 +584,7 @@ static inline u8 *__bnxt_alloc_rx_data(struct bnxt *bp, dma_addr_t *mapping, return NULL; *mapping = dma_map_single(&pdev->dev, data + BNXT_RX_DMA_OFFSET, - bp->rx_buf_use_size, PCI_DMA_FROMDEVICE); + bp->rx_buf_use_size, bp->rx_dir); if (dma_mapping_error(&pdev->dev, *mapping)) { kfree(data); @@ -772,7 +772,7 @@ static struct sk_buff *bnxt_rx_skb(struct bnxt *bp, skb = build_skb(data, 0); dma_unmap_single(&bp->pdev->dev, dma_addr, bp->rx_buf_use_size, - PCI_DMA_FROMDEVICE); + bp->rx_dir); if (!skb) { kfree(data); return NULL; @@ -878,15 +878,14 @@ static inline struct sk_buff *bnxt_copy_skb(struct bnxt_napi *bnapi, u8 *data, if (!skb) return NULL; - dma_sync_single_for_cpu(&pdev->dev, mapping, - bp->rx_copy_thresh, PCI_DMA_FROMDEVICE); + dma_sync_single_for_cpu(&pdev->dev, mapping, bp->rx_copy_thresh, + bp->rx_dir); memcpy(skb->data - NET_IP_ALIGN, data - NET_IP_ALIGN, len + NET_IP_ALIGN); - dma_sync_single_for_device(&pdev->dev, mapping, - bp->rx_copy_thresh, - PCI_DMA_FROMDEVICE); + dma_sync_single_for_device(&pdev->dev, mapping, bp->rx_copy_thresh, + bp->rx_dir); skb_put(skb, len); return skb; @@ -1261,7 +1260,7 @@ static inline struct sk_buff *bnxt_tpa_end(struct bnxt *bp, skb = build_skb(data, 0); dma_unmap_single(&bp->pdev->dev, mapping, bp->rx_buf_use_size, - PCI_DMA_FROMDEVICE); + bp->rx_dir); if (!skb) { kfree(data); @@ -1878,11 +1877,9 @@ static void bnxt_free_rx_skbs(struct bnxt *bp) if (!data) continue; - dma_unmap_single( - &pdev->dev, - tpa_info->mapping, - bp->rx_buf_use_size, - PCI_DMA_FROMDEVICE); + dma_unmap_single(&pdev->dev, tpa_info->mapping, + bp->rx_buf_use_size, + bp->rx_dir); tpa_info->data = NULL; @@ -1898,8 +1895,7 @@ static void bnxt_free_rx_skbs(struct bnxt *bp) continue; dma_unmap_single(&pdev->dev, rx_buf->mapping, - bp->rx_buf_use_size, - PCI_DMA_FROMDEVICE); + bp->rx_buf_use_size, bp->rx_dir); rx_buf->data = NULL; @@ -2563,6 +2559,7 @@ void bnxt_set_ring_params(struct bnxt *bp) static int bnxt_set_rx_skb_mode(struct bnxt *bp) { + bp->rx_dir = DMA_FROM_DEVICE; bp->rx_skb_func = bnxt_rx_skb; return 0; } diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index b4a04a3945e9..353b6d179ed2 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -997,6 +997,7 @@ struct bnxt { u32 rx_buf_size; u32 rx_buf_use_size; /* useable size */ + enum dma_data_direction rx_dir; u32 rx_ring_size; u32 rx_agg_ring_size; u32 rx_copy_thresh; |