diff options
| author | Mitch Williams <mitch.a.williams@intel.com> | 2015-02-24 06:58:51 +0000 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2015-03-03 01:07:29 -0800 |
| commit | ed250ecc5546649e0d8a1b8f000594314a666547 (patch) | |
| tree | 602237c37b262bd3cbf9b7293b52147b49400462 /drivers | |
| parent | 66ddcffb1afb009d352115a61e25c237915d9e04 (diff) | |
| download | linux-ed250ecc5546649e0d8a1b8f000594314a666547.tar.bz2 | |
i40evf: ethtool RSS fixes
Add an extra check to make sure that the indirection table pointer is
valid before dereferencing it.
Change-ID: I698adbf3daff03081d01f489dc95a9f1ad8b12f1
Reported-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c b/drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c index c5ffaccb59d3..681a5d4b4f6a 100644 --- a/drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c +++ b/drivers/net/ethernet/intel/i40evf/i40evf_ethtool.c @@ -642,12 +642,14 @@ static int i40evf_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key, if (!indir) return 0; - for (i = 0, j = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++) { - hlut_val = rd32(hw, I40E_VFQF_HLUT(i)); - indir[j++] = hlut_val & 0xff; - indir[j++] = (hlut_val >> 8) & 0xff; - indir[j++] = (hlut_val >> 16) & 0xff; - indir[j++] = (hlut_val >> 24) & 0xff; + if (indir) { + for (i = 0, j = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++) { + hlut_val = rd32(hw, I40E_VFQF_HLUT(i)); + indir[j++] = hlut_val & 0xff; + indir[j++] = (hlut_val >> 8) & 0xff; + indir[j++] = (hlut_val >> 16) & 0xff; + indir[j++] = (hlut_val >> 24) & 0xff; + } } return 0; } |