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gianfar: Reject out-of-range RX NFC locations 

Currently the driver only uses location values to maintain an ordered
list of filters.  Make it reject location values >= MAX_FILER_IDX
passed to the ETHTOOL_SRXCLSRLINS command, consistent with the range
it reports for the ETHTOOL_GRXCLSRLALL command.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Acked-by: Sebastian Pöhn <sebastian.poehn@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ben Hutchings 2012-01-03 11:59:30 +00:00 committed by David S. Miller
parent 6386994e03
commit 3a73e49caa
1 changed files with 3 additions and 2 deletions
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5
drivers/net/ethernet/freescale/gianfar_ethtool.c
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@ -1692,8 +1692,9 @@ static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
ret = gfar_set_hash_opts(priv, cmd);
break;
case ETHTOOL_SRXCLSRLINS:
if (cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
cmd->fs.ring_cookie >= priv->num_rx_queues) {
if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
cmd->fs.ring_cookie >= priv->num_rx_queues) ||
cmd->fs.location >= MAX_FILER_IDX) {
ret = -EINVAL;
break;
}