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bnxt_en: Fix ethtool -x crash when device is down. 

Fix ethtool .get_rxfh() crash by checking for valid indirection table
address before copying the data.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2018-04-11 11:50:13 -04:00 committed by David S. Miller
parent 949989b36c
commit 7991cb9cfb
1 changed files with 8 additions and 3 deletions
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11
drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
View File

@ -870,17 +870,22 @@ static int bnxt_get_rxfh(struct net_device *dev, u32 *indir, u8 *key,
u8 *hfunc)
{
struct bnxt *bp = netdev_priv(dev);
struct bnxt_vnic_info *vnic = &bp->vnic_info[0];
struct bnxt_vnic_info *vnic;
int i = 0;
if (hfunc)
*hfunc = ETH_RSS_HASH_TOP;
if (indir)
if (!bp->vnic_info)
return 0;
vnic = &bp->vnic_info[0];
if (indir && vnic->rss_table) {
for (i = 0; i < HW_HASH_INDEX_SIZE; i++)
indir[i] = le16_to_cpu(vnic->rss_table[i]);
}
if (key)
if (key && vnic->rss_hash_key)
memcpy(key, vnic->rss_hash_key, HW_HASH_KEY_SIZE);
return 0;