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i40e: explicitly fail on extended MAC field for ethtool_rx_flow_spec

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Although we will fail the filter later due to checking flow_type which
will have a bogus invalid type, it is possible future refactoring will
remove this hidden failure case. Avoid a possible issue in the future by
explicitly checking the flow type at the start.

Change-Id: Ia98eb26f7b93ccbe38c7141e8f203ef496fc6598
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Jacob Keller 2017-02-06 14:39:12 -08:00 committed by Jeff Kirsher
parent 097dbf5250
commit 1ec8deac8c
1 changed files with 4 additions and 0 deletions
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4
drivers/net/ethernet/intel/i40e/i40e_ethtool.c
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@ -2771,6 +2771,10 @@ static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;
/* Extended MAC field is not supported */
if (fsp->flow_type & FLOW_MAC_EXT)
return -EINVAL;
if (fsp->location >= (pf->hw.func_caps.fd_filters_best_effort +
pf->hw.func_caps.fd_filters_guaranteed)) {
return -EINVAL;