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 <davem@davemloft.net>

diff --git a/drivers/net/ethernet/sun/niu.c b/drivers/net/ethernet/sun/niu.c
index 703c8cc..8c726b7 100644 (file)
--- 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;