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8139cp: reset BQL when ring tx ring cleared

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This patch cures transmit timeout's with DHCP observed
while running under KVM. When the transmit ring is cleaned out,
the Byte Queue Limit values need to be reset.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
stephen hemminger 2013-05-20 06:54:43 +00:00 committed by David S. Miller
parent 4d12997a9b
commit 98962baad7
1 changed files with 1 additions and 0 deletions
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drivers/net/ethernet/realtek/8139cp.c
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@ -1136,6 +1136,7 @@ static void cp_clean_rings (struct cp_private *cp)
cp->dev->stats.tx_dropped++;
}
}
netdev_reset_queue(cp->dev);
memset(cp->rx_ring, 0, sizeof(struct cp_desc) * CP_RX_RING_SIZE);
memset(cp->tx_ring, 0, sizeof(struct cp_desc) * CP_TX_RING_SIZE);