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iavf: use tc_cls_can_offload_and_chain0() instead of chain check

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[ Upstream commit bb0858d8bc ]

Looks like the iavf code actually experienced a race condition, when a
developer took code before the check for chain 0 was put to helper.
So use tc_cls_can_offload_and_chain0() helper instead of direct check and
move the check to _cb() so this is similar to i40e code.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jiri Pirko 2020-02-26 09:21:57 +01:00 committed by Greg Kroah-Hartman
parent 0d5984ba93
commit 21e2f6bf08
1 changed files with 5 additions and 3 deletions
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8
drivers/net/ethernet/intel/iavf/iavf_main.c
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@ -3077,9 +3077,6 @@ static int iavf_delete_clsflower(struct iavf_adapter *adapter,
static int iavf_setup_tc_cls_flower(struct iavf_adapter *adapter,
struct flow_cls_offload *cls_flower)
{
if (cls_flower->common.chain_index)
return -EOPNOTSUPP;
switch (cls_flower->command) {
case FLOW_CLS_REPLACE:
return iavf_configure_clsflower(adapter, cls_flower);
@ -3103,6 +3100,11 @@ static int iavf_setup_tc_cls_flower(struct iavf_adapter *adapter,
static int iavf_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
void *cb_priv)
{
struct iavf_adapter *adapter = cb_priv;
if (!tc_cls_can_offload_and_chain0(adapter->netdev, type_data))
return -EOPNOTSUPP;
switch (type) {
case TC_SETUP_CLSFLOWER:
return iavf_setup_tc_cls_flower(cb_priv, type_data);