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[TG3]: Add lower bound checks for tx ring size.

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The minimum tx ring size must be greater than MAX_SKB_FRAGS or 3
times that on some chips with TSO bugs.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2006-10-18 20:55:18 -07:00 committed by David S. Miller
parent 42952231c6
commit bc3a9254a7
1 changed files with 4 additions and 1 deletions
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5
drivers/net/tg3.c
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@ -8106,7 +8106,10 @@ static int tg3_set_ringparam(struct net_device *dev, struct ethtool_ringparam *e
if ((ering->rx_pending > TG3_RX_RING_SIZE - 1) ||
(ering->rx_jumbo_pending > TG3_RX_JUMBO_RING_SIZE - 1) ||
(ering->tx_pending > TG3_TX_RING_SIZE - 1))
(ering->tx_pending > TG3_TX_RING_SIZE - 1) ||
(ering->tx_pending <= MAX_SKB_FRAGS) ||
((tp->tg3_flags2 & TG3_FLG2_HW_TSO_1_BUG) &&
(ering->tx_pending <= (MAX_SKB_FRAGS * 3))))
return -EINVAL;
if (netif_running(dev)) {