hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

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>
This commit is contained in:
Michael Chan 2017-02-06 16:55:34 -05:00 committed by David S. Miller
parent 11cd119d31
commit 745fc05c9d
2 changed files with 13 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View File

@ -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;
}

1
drivers/net/ethernet/broadcom/bnxt/bnxt.h
View File

@ -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;