linux-kernel - [PATCH net-next 14/18] net: mvpp2: cls: Don't use the sequence attribute for classification

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Date:   Wed, 27 Mar 2019 09:44:18 +0100
From:   Maxime Chevallier <maxime.chevallier@...tlin.com>
To:     davem@...emloft.net
Cc:     Maxime Chevallier <maxime.chevallier@...tlin.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Antoine Tenart <antoine.tenart@...tlin.com>,
        thomas.petazzoni@...tlin.com, gregory.clement@...tlin.com,
        miquel.raynal@...tlin.com, nadavh@...vell.com, stefanc@...vell.com,
        ymarkman@...vell.com, mw@...ihalf.com,
        Russell King <linux@...linux.org.uk>,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH net-next 14/18] net: mvpp2: cls: Don't use the sequence attribute for classification

The classifier allows to combine multiple lookups in one "sequence" that
is counted as a single lookup to an engine, with a single result.

We don't actually use that feature, so remove any places where we set
this field, so that the classifier doesn't try to interpret these
fields.

Signed-off-by: Maxime Chevallier <maxime.chevallier@...tlin.com>
---
 drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c | 10 ----------
 drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.h |  8 --------
 2 files changed, 18 deletions(-)

diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c
index 533919982735..e50154e03141 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c
@@ -429,12 +429,6 @@ static void mvpp2_cls_flow_port_id_sel(struct mvpp2_cls_flow_entry *fe,
 		fe->data[0] &= ~MVPP2_CLS_FLOW_TBL0_PORT_ID_SEL;
 }
 
-static void mvpp2_cls_flow_seq_set(struct mvpp2_cls_flow_entry *fe, u32 seq)
-{
-	fe->data[1] &= ~MVPP2_CLS_FLOW_TBL1_SEQ(MVPP2_CLS_FLOW_TBL1_SEQ_MASK);
-	fe->data[1] |= MVPP2_CLS_FLOW_TBL1_SEQ(seq);
-}
-
 static void mvpp2_cls_flow_last_set(struct mvpp2_cls_flow_entry *fe,
 				    bool is_last)
 {
@@ -548,7 +542,6 @@ static void mvpp2_cls_flow_init(struct mvpp2 *priv,
 	mvpp2_cls_flow_port_id_sel(&fe, true);
 	mvpp2_cls_flow_last_set(&fe, 0);
 	mvpp2_cls_flow_pri_set(&fe, 0);
-	mvpp2_cls_flow_seq_set(&fe, MVPP2_CLS_FLOW_SEQ_FIRST1);
 	mvpp2_cls_flow_lu_type_set(&fe, MVPP2_CLS_LU_ALL);
 
 	/* Add all ports */
@@ -564,7 +557,6 @@ static void mvpp2_cls_flow_init(struct mvpp2 *priv,
 
 		mvpp2_cls_flow_port_id_sel(&fe, true);
 		mvpp2_cls_flow_pri_set(&fe, i + 1);
-		mvpp2_cls_flow_seq_set(&fe, MVPP2_CLS_FLOW_SEQ_MIDDLE);
 		mvpp2_cls_flow_port_add(&fe, BIT(i));
 
 		mvpp2_cls_flow_write(priv, &fe);
@@ -572,8 +564,6 @@ static void mvpp2_cls_flow_init(struct mvpp2 *priv,
 
 	/* Update the last entry */
 	mvpp2_cls_flow_last_set(&fe, 1);
-	mvpp2_cls_flow_seq_set(&fe, MVPP2_CLS_FLOW_SEQ_LAST);
-
 	mvpp2_cls_flow_write(priv, &fe);
 }
 
diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.h b/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.h
index fa588b07d182..9a4796fc0219 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.h
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.h
@@ -71,14 +71,6 @@ enum mvpp2_cls_field_id {
 	MVPP22_CLS_FIELD_L4DIP = 0x1e,
 };
 
-enum mvpp2_cls_flow_seq {
-	MVPP2_CLS_FLOW_SEQ_NORMAL = 0,
-	MVPP2_CLS_FLOW_SEQ_FIRST1,
-	MVPP2_CLS_FLOW_SEQ_FIRST2,
-	MVPP2_CLS_FLOW_SEQ_LAST,
-	MVPP2_CLS_FLOW_SEQ_MIDDLE
-};
-
 /* Classifier C2 engine constants */
 #define MVPP22_CLS_C2_TCAM_EN(data)		((data) << 16)
 
-- 
2.20.1