From ddd0ca5d60b350bbfbfb60b25885a9779ce6d6c7 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Fri, 13 Mar 2015 12:11:07 -0700 Subject: [PATCH] net: bcmgenet: add support for xmit_more Delay the update of the TDMA producer index unless this is the last SKB in a batch, or the queue is already stopped. Move the check for whether the queue should be stopped before the xmit_more check to avoid locking the transmit queue in case there was a SKB submitted which has xmit_more set. Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/genet/bcmgenet.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c index 53c916ea06a2..e74ae628bbb9 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -1316,12 +1316,13 @@ static netdev_tx_t bcmgenet_xmit(struct sk_buff *skb, struct net_device *dev) ring->prod_index += nr_frags + 1; ring->prod_index &= DMA_P_INDEX_MASK; - bcmgenet_tdma_ring_writel(priv, ring->index, - ring->prod_index, TDMA_PROD_INDEX); - if (ring->free_bds <= (MAX_SKB_FRAGS + 1)) netif_tx_stop_queue(txq); + if (!skb->xmit_more || netif_xmit_stopped(txq)) + /* Packets are ready, update producer index */ + bcmgenet_tdma_ring_writel(priv, ring->index, + ring->prod_index, TDMA_PROD_INDEX); out: spin_unlock_irqrestore(&ring->lock, flags); -- 2.20.1