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net: stmmac: restructure tc implementation for RX VLAN Priority steering 

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>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ong Boon Leong 2021-03-19 01:22:03 +08:00 committed by David S. Miller
parent 3122216255
commit bd0f670e79
1 changed files with 22 additions and 2 deletions
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24
drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
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@ -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;