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bcm63xx: fix Tx cleanup when NAPI poll budget is zero

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NAPI poll() function may be passed a budget value of zero, i.e. during
netpoll, which isn't NAPI context.
Therefore, napi_consume_skb() must be given budget value instead of
!force to truly discern netpoll-like scenarios.

Fixes: c63c615e22 ("bcm63xx_enet: switch to napi_build_skb() to reuse skbuff_heads")
Signed-off-by: Sieng-Piaw Liew <liew.s.piaw@gmail.com>
Link: https://lore.kernel.org/r/20220708080303.298-1-liew.s.piaw@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Sieng-Piaw Liew 2022-07-08 16:03:03 +08:00 committed by Jakub Kicinski
parent b205c1b423
commit 10c8fd2f7a
1 changed files with 5 additions and 5 deletions
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10
drivers/net/ethernet/broadcom/bcm63xx_enet.c
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@ -423,7 +423,7 @@ static int bcm_enet_receive_queue(struct net_device *dev, int budget)
/*
* try to or force reclaim of transmitted buffers
*/
static int bcm_enet_tx_reclaim(struct net_device *dev, int force)
static int bcm_enet_tx_reclaim(struct net_device *dev, int force, int budget)
{
struct bcm_enet_priv *priv;
unsigned int bytes;
@ -468,7 +468,7 @@ static int bcm_enet_tx_reclaim(struct net_device *dev, int force)
dev->stats.tx_errors++;
bytes += skb->len;
napi_consume_skb(skb, !force);
napi_consume_skb(skb, budget);
released++;
}
@ -499,7 +499,7 @@ static int bcm_enet_poll(struct napi_struct *napi, int budget)
ENETDMAC_IR, priv->tx_chan);
/* reclaim sent skb */
bcm_enet_tx_reclaim(dev, 0);
bcm_enet_tx_reclaim(dev, 0, budget);
spin_lock(&priv->rx_lock);
rx_work_done = bcm_enet_receive_queue(dev, budget);
@ -1211,7 +1211,7 @@ static int bcm_enet_stop(struct net_device *dev)
bcm_enet_disable_mac(priv);
/* force reclaim of all tx buffers */
bcm_enet_tx_reclaim(dev, 1);
bcm_enet_tx_reclaim(dev, 1, 0);
/* free the rx buffer ring */
bcm_enet_free_rx_buf_ring(kdev, priv);
@ -2362,7 +2362,7 @@ static int bcm_enetsw_stop(struct net_device *dev)
bcm_enet_disable_dma(priv, priv->rx_chan);
/* force reclaim of all tx buffers */
bcm_enet_tx_reclaim(dev, 1);
bcm_enet_tx_reclaim(dev, 1, 0);
/* free the rx buffer ring */
bcm_enet_free_rx_buf_ring(kdev, priv);