net: mscc: ocelot: use index to set vcap policer

Policer was previously automatically assigned from the highest index to
the lowest index from policer pool. But police action of tc flower now
uses index to set an police entry. This patch uses the police index to
set vcap policers, so that one policer can be shared by multiple rules.

Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 15 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mscc/ocelot_flower.c b/drivers/net/ethernet/mscc/ocelot_flower.c
index b22966e15acf..b54b52fd9e1b 100644
--- a/drivers/net/ethernet/mscc/ocelot_flower.c
+++ b/drivers/net/ethernet/mscc/ocelot_flower.c
@@ -222,6 +222,7 @@ static int ocelot_flower_parse_action(struct ocelot *ocelot, int port,
 	const struct flow_action_entry *a;
 	enum ocelot_tag_tpid_sel tpid;
 	int i, chain, egress_port;
+	u32 pol_ix, pol_max;
 	u64 rate;
 	int err;
 
@@ -301,6 +302,20 @@ static int ocelot_flower_parse_action(struct ocelot *ocelot, int port,
 				return -EOPNOTSUPP;
 			}
 			filter->action.police_ena = true;
+
+			pol_ix = a->police.index + ocelot->vcap_pol.base;
+			pol_max = ocelot->vcap_pol.max;
+
+			if (ocelot->vcap_pol.max2 && pol_ix > pol_max) {
+				pol_ix += ocelot->vcap_pol.base2 - pol_max - 1;
+				pol_max = ocelot->vcap_pol.max2;
+			}
+
+			if (pol_ix >= pol_max)
+				return -EINVAL;
+
+			filter->action.pol_ix = pol_ix;
+
 			rate = a->police.rate_bytes_ps;
 			filter->action.pol.rate = div_u64(rate, 1000) * 8;
 			filter->action.pol.burst = a->police.burst;