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Subject[PATCH net-next 1/2] net: stmmac: restructure tc implementation for RX VLAN Priority steering
Date
The current tc_add_flow() and tc_del_flow() use hardware L3 & L4 filters
as offloading. The number of L3/L4 filters is read from L3L4FNUM field
from MAC_HW_Feature1 register and is used to alloc priv->tc_entries[].

For RX frame steering based on VLAN priority offloading, we use
MAC_RXQ_CTRL2 & MAC_RXQ_CTRL3 registers and all VLAN priority level
can be configured independent from L3 & L4 filters.

Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
---
.../net/ethernet/stmicro/stmmac/stmmac_tc.c | 24 +++++++++++++++++--
1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
index 44bb133c3000..f4d8d7980ec5 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
@@ -598,6 +598,26 @@ static int tc_del_flow(struct stmmac_priv *priv,
return ret;
}

+static int tc_add_flow_cls(struct stmmac_priv *priv,
+ struct flow_cls_offload *cls)
+{
+ int ret;
+
+ ret = tc_add_flow(priv, cls);
+
+ return ret;
+}
+
+static int tc_del_flow_cls(struct stmmac_priv *priv,
+ struct flow_cls_offload *cls)
+{
+ int ret;
+
+ ret = tc_del_flow(priv, cls);
+
+ return ret;
+}
+
static int tc_setup_cls(struct stmmac_priv *priv,
struct flow_cls_offload *cls)
{
@@ -609,10 +629,10 @@ static int tc_setup_cls(struct stmmac_priv *priv,

switch (cls->command) {
case FLOW_CLS_REPLACE:
- ret = tc_add_flow(priv, cls);
+ ret = tc_add_flow_cls(priv, cls);
break;
case FLOW_CLS_DESTROY:
- ret = tc_del_flow(priv, cls);
+ ret = tc_del_flow_cls(priv, cls);
break;
default:
return -EOPNOTSUPP;
--
2.25.1
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