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bcm63xx_enet: switch to napi_build_skb() to reuse skbuff_heads

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napi_build_skb() reuses NAPI skbuff_head cache in order to save some
cycles on freeing/allocating skbuff_heads on every new Rx or completed
Tx.
Use napi_consume_skb() to feed the cache with skbuff_heads of completed
Tx so it's never empty.

Signed-off-by: Sieng Piaw Liew <liew.s.piaw@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sieng Piaw Liew 2022-06-15 14:09:22 +08:00 committed by David S. Miller
parent 49ae83fc4f
commit c63c615e22
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ethernet/broadcom/bcm63xx_enet.c
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@ -388,7 +388,7 @@ static int bcm_enet_receive_queue(struct net_device *dev, int budget)
priv->rx_buf_size, DMA_FROM_DEVICE);
priv->rx_buf[desc_idx] = NULL;
skb = build_skb(buf, priv->rx_frag_size);
skb = napi_build_skb(buf, priv->rx_frag_size);
if (unlikely(!skb)) {
skb_free_frag(buf);
dev->stats.rx_dropped++;
@ -468,7 +468,7 @@ static int bcm_enet_tx_reclaim(struct net_device *dev, int force)
dev->stats.tx_errors++;
bytes += skb->len;
dev_kfree_skb(skb);
napi_consume_skb(skb, !force);
released++;
}