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net: lan966x: Add len field to lan966x_tx_dcb_buf

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Currently when a frame was transmitted, it is required to unamp the
frame that was transmitted. The length of the frame was taken from the
transmitted skb. In the future we might not have an skb, therefore store
the length skb directly in the lan966x_tx_dcb_buf and use this one to
unamp the frame.
While at this, also arrange the members in lan966x_tx_dcb_buf not to
have any holes.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Horatiu Vultur 2022-11-23 21:31:35 +01:00 committed by David S. Miller
parent 3d66bc5786
commit 49f5eea8c4
2 changed files with 7 additions and 5 deletions
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5
drivers/net/ethernet/microchip/lan966x/lan966x_fdma.c
View File

@ -391,12 +391,12 @@ static void lan966x_fdma_tx_clear_buf(struct lan966x *lan966x, int weight)
continue;
dcb_buf->dev->stats.tx_packets++;
dcb_buf->dev->stats.tx_bytes += dcb_buf->skb->len;
dcb_buf->dev->stats.tx_bytes += dcb_buf->len;
dcb_buf->used = false;
dma_unmap_single(lan966x->dev,
dcb_buf->dma_addr,
dcb_buf->skb->len,
dcb_buf->len,
DMA_TO_DEVICE);
if (!dcb_buf->ptp)
dev_kfree_skb_any(dcb_buf->skb);
@ -709,6 +709,7 @@ int lan966x_fdma_xmit(struct sk_buff *skb, __be32 *ifh, struct net_device *dev)
/* Fill up the buffer */
next_dcb_buf = &tx->dcbs_buf[next_to_use];
next_dcb_buf->skb = skb;
next_dcb_buf->len = skb->len;
next_dcb_buf->dma_addr = dma_addr;
next_dcb_buf->used = true;
next_dcb_buf->ptp = false;

7
drivers/net/ethernet/microchip/lan966x/lan966x_main.h
View File

@ -173,11 +173,12 @@ struct lan966x_rx {
};
struct lan966x_tx_dcb_buf {
dma_addr_t dma_addr;
struct net_device *dev;
struct sk_buff *skb;
dma_addr_t dma_addr;
bool used;
bool ptp;
u32 len;
u32 used : 1;
u32 ptp : 1;
};
struct lan966x_tx {