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ath79: ag71xx: reuse skbuff_head with napi skb api

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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>
[ fixed commit title ]
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
This commit is contained in:
Sieng Piaw Liew 2022-06-15 12:17:24 +08:00 committed by Christian Marangi
parent 6d423ffbd1
commit 265f402fbd
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1 changed files with 5 additions and 1 deletions
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6
target/linux/ath79/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
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@ -1278,7 +1278,7 @@ static int ag71xx_tx_packets(struct ag71xx *ag, bool flush)
if (!skb)
continue;
dev_kfree_skb_any(skb);
napi_consume_skb(skb, !flush);
ring->buf[i].skb = NULL;
bytes_compl += ring->buf[i].len;
@ -1352,7 +1352,11 @@ static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
dev->stats.rx_packets++;
dev->stats.rx_bytes += pktlen;
#if LINUX_VERSION_CODE < KERNEL_VERSION(5,12,0)
skb = build_skb(ring->buf[i].rx_buf, ag71xx_buffer_size(ag));
#else
skb = napi_build_skb(ring->buf[i].rx_buf, ag71xx_buffer_size(ag));
#endif
if (!skb) {
skb_free_frag(ring->buf[i].rx_buf);
goto next;