| Message ID | 1472121901-15629-2-git-send-email-sean.wang@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 25/08/2016 12:44, Sean Wang wrote: > which net device the SKB is complete for depends on the forward port > on txd4 on the corresponding TX descriptor, but the information isn't > set up well in case of SKB fragments that would lead to watchdog timeout > from the upper layer, so fix it up. > > Signed-off-by: Sean Wang <sean.wang@mediatek.com> Acked-by: John Crispin <john@phrozen.org> > --- > drivers/net/ethernet/mediatek/mtk_eth_soc.c | 7 ++++--- > 1 file changed, 4 insertions(+), 3 deletions(-) > > diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c > index 1801fd8..6e4a6ca 100644 > --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c > +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c > @@ -587,14 +587,15 @@ static int mtk_tx_map(struct sk_buff *skb, struct net_device *dev, > dma_addr_t mapped_addr; > unsigned int nr_frags; > int i, n_desc = 1; > - u32 txd4 = 0; > + u32 txd4 = 0, fport; > > itxd = ring->next_free; > if (itxd == ring->last_free) > return -ENOMEM; > > /* set the forward port */ > - txd4 |= (mac->id + 1) << TX_DMA_FPORT_SHIFT; > + fport = (mac->id + 1) << TX_DMA_FPORT_SHIFT; > + txd4 |= fport; > > tx_buf = mtk_desc_to_tx_buf(ring, itxd); > memset(tx_buf, 0, sizeof(*tx_buf)); > @@ -652,7 +653,7 @@ static int mtk_tx_map(struct sk_buff *skb, struct net_device *dev, > WRITE_ONCE(txd->txd3, (TX_DMA_SWC | > TX_DMA_PLEN0(frag_map_size) | > last_frag * TX_DMA_LS0)); > - WRITE_ONCE(txd->txd4, 0); > + WRITE_ONCE(txd->txd4, fport); > > tx_buf->skb = (struct sk_buff *)MTK_DMA_DUMMY_DESC; > tx_buf = mtk_desc_to_tx_buf(ring, txd); >
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 1801fd8..6e4a6ca 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -587,14 +587,15 @@ static int mtk_tx_map(struct sk_buff *skb, struct net_device *dev, dma_addr_t mapped_addr; unsigned int nr_frags; int i, n_desc = 1; - u32 txd4 = 0; + u32 txd4 = 0, fport; itxd = ring->next_free; if (itxd == ring->last_free) return -ENOMEM; /* set the forward port */ - txd4 |= (mac->id + 1) << TX_DMA_FPORT_SHIFT; + fport = (mac->id + 1) << TX_DMA_FPORT_SHIFT; + txd4 |= fport; tx_buf = mtk_desc_to_tx_buf(ring, itxd); memset(tx_buf, 0, sizeof(*tx_buf)); @@ -652,7 +653,7 @@ static int mtk_tx_map(struct sk_buff *skb, struct net_device *dev, WRITE_ONCE(txd->txd3, (TX_DMA_SWC | TX_DMA_PLEN0(frag_map_size) | last_frag * TX_DMA_LS0)); - WRITE_ONCE(txd->txd4, 0); + WRITE_ONCE(txd->txd4, fport); tx_buf->skb = (struct sk_buff *)MTK_DMA_DUMMY_DESC; tx_buf = mtk_desc_to_tx_buf(ring, txd);
which net device the SKB is complete for depends on the forward port on txd4 on the corresponding TX descriptor, but the information isn't set up well in case of SKB fragments that would lead to watchdog timeout from the upper layer, so fix it up. Signed-off-by: Sean Wang <sean.wang@mediatek.com> --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)