5.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sudheer Mogilappagari sudheer.mogilappagari@intel.com
[ Upstream commit 3e48041d9820c17e0a51599d12e66c6e12a8d08d ]
Prevent VF from configuring filters with unsupported actions or use REDIRECT action with invalid tc number. Current checks could cause out of bounds access on PF side.
Fixes: e284fc280473 ("i40e: Add and delete cloud filter") Reviewed-by: Andrii Staikov andrii.staikov@intel.com Signed-off-by: Sudheer Mogilappagari sudheer.mogilappagari@intel.com Signed-off-by: Aleksandr Loktionov aleksandr.loktionov@intel.com Reviewed-by: Simon Horman horms@kernel.org Tested-by: Bharathi Sreenivas bharathi.sreenivas@intel.com Signed-off-by: Tony Nguyen anthony.l.nguyen@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c index 37ce764ed3730..d53e535a447d6 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c +++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c @@ -3332,16 +3332,16 @@ static int i40e_validate_cloud_filter(struct i40e_vf *vf, bool found = false; int bkt;
- if (!tc_filter->action) { + if (tc_filter->action != VIRTCHNL_ACTION_TC_REDIRECT) { dev_info(&pf->pdev->dev, - "VF %d: Currently ADq doesn't support Drop Action\n", - vf->vf_id); + "VF %d: ADQ doesn't support this action (%d)\n", + vf->vf_id, tc_filter->action); goto err; }
/* action_meta is TC number here to which the filter is applied */ if (!tc_filter->action_meta || - tc_filter->action_meta > I40E_MAX_VF_VSI) { + tc_filter->action_meta > vf->num_tc) { dev_info(&pf->pdev->dev, "VF %d: Invalid TC number %u\n", vf->vf_id, tc_filter->action_meta); goto err;