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iavf: validate pointers

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In some cases, the ethtool get_rxfh handler may be called with a null
key or indir parameter. So check these pointers, or you will have a very
bad day.

Fixes: 43a3d9ba34 ("i40evf: Allow PF driver to configure RSS")
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Tony Brelinski <tony.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
This commit is contained in:
Mitch Williams 2021-06-04 09:48:58 -07:00 committed by Tony Nguyen
parent 4f04008038
commit 131b0edc40
1 changed files with 6 additions and 7 deletions
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5
drivers/net/ethernet/intel/iavf/iavf_ethtool.c
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@ -1859,11 +1859,10 @@ static int iavf_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
if (hfunc)
*hfunc = ETH_RSS_HASH_TOP;
if (!indir)
return 0;
if (key)
memcpy(key, adapter->rss_key, adapter->rss_key_size);
if (indir)
/* Each 32 bits pointed by 'indir' is stored with a lut entry */
for (i = 0; i < adapter->rss_lut_size; i++)
indir[i] = (u32)adapter->rss_lut[i];