From 6a2b28ef036ab5c66fdc606fe97d9e5cb34ea409 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Fri, 8 Jun 2012 00:28:16 -0700 Subject: [PATCH] Revert "niu: Add support for byte queue limits." This reverts commit efa230f2c68abab817f13473077f8d0cc74f43f3. BQL doesn't work with how this driver currently only takes TX interrupts every 1/4 of the TX ring. That behavior needs to be fixed, but that's a larger non-trivial task and for now we have to revert BQL support as this makes the device currently completely unusable. Signed-off-by: David S. Miller --- drivers/net/ethernet/sun/niu.c | 12 +----------- 1 file changed, 1 insertion(+), 11 deletions(-) diff --git a/drivers/net/ethernet/sun/niu.c b/drivers/net/ethernet/sun/niu.c index 703c8cce2a2..8c726b7004d 100644 --- a/drivers/net/ethernet/sun/niu.c +++ b/drivers/net/ethernet/sun/niu.c @@ -3598,7 +3598,6 @@ static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx) static void niu_tx_work(struct niu *np, struct tx_ring_info *rp) { struct netdev_queue *txq; - unsigned int tx_bytes; u16 pkt_cnt, tmp; int cons, index; u64 cs; @@ -3621,18 +3620,12 @@ static void niu_tx_work(struct niu *np, struct tx_ring_info *rp) netif_printk(np, tx_done, KERN_DEBUG, np->dev, "%s() pkt_cnt[%u] cons[%d]\n", __func__, pkt_cnt, cons); - tx_bytes = 0; - tmp = pkt_cnt; - while (tmp--) { - tx_bytes += rp->tx_buffs[cons].skb->len; + while (pkt_cnt--) cons = release_tx_packet(np, rp, cons); - } rp->cons = cons; smp_mb(); - netdev_tx_completed_queue(txq, pkt_cnt, tx_bytes); - out: if (unlikely(netif_tx_queue_stopped(txq) && (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) { @@ -4333,7 +4326,6 @@ static void niu_free_channels(struct niu *np) struct tx_ring_info *rp = &np->tx_rings[i]; niu_free_tx_ring_info(np, rp); - netdev_tx_reset_queue(netdev_get_tx_queue(np->dev, i)); } kfree(np->tx_rings); np->tx_rings = NULL; @@ -6739,8 +6731,6 @@ static netdev_tx_t niu_start_xmit(struct sk_buff *skb, prod = NEXT_TX(rp, prod); } - netdev_tx_sent_queue(txq, skb->len); - if (prod < rp->prod) rp->wrap_bit ^= TX_RING_KICK_WRAP; rp->prod = prod; -- 2.20.1