From 10c8fd2f7a40d691062649307a2aba00dac5dbe6 Mon Sep 17 00:00:00 2001 From: Sieng-Piaw Liew Date: Fri, 8 Jul 2022 16:03:03 +0800 Subject: [PATCH] bcm63xx: fix Tx cleanup when NAPI poll budget is zero 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: c63c615e22eb ("bcm63xx_enet: switch to napi_build_skb() to reuse skbuff_heads") Signed-off-by: Sieng-Piaw Liew Link: https://lore.kernel.org/r/20220708080303.298-1-liew.s.piaw@gmail.com Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/broadcom/bcm63xx_enet.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bcm63xx_enet.c b/drivers/net/ethernet/broadcom/bcm63xx_enet.c index fcaa6a2..1c6aea12 100644 --- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c +++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c @@ -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); -- 2.7.4