linux-kernel - [net-next] net: mvpp2: add an entry to skip parser

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Message-ID: <1612966633-11064-1-git-send-email-stefanc@marvell.com>
Date:   Wed, 10 Feb 2021 16:17:13 +0200
From:   <stefanc@...vell.com>
To:     <netdev@...r.kernel.org>
CC:     <thomas.petazzoni@...tlin.com>, <davem@...emloft.net>,
        <nadavh@...vell.com>, <ymarkman@...vell.com>,
        <linux-kernel@...r.kernel.org>, <stefanc@...vell.com>,
        <kuba@...nel.org>, <linux@...linux.org.uk>, <mw@...ihalf.com>,
        <andrew@...n.ch>, <rmk+kernel@...linux.org.uk>,
        <atenart@...nel.org>, <lironh@...vell.com>
Subject: [net-next] net: mvpp2: add an entry to skip parser

From: Stefan Chulski <stefanc@...vell.com>

This entry used when skipping the parser needed,
for example, the custom header pretended to ethernet header.

Suggested-by: Liron Himi <liron@...vell.com>
Signed-off-by: Stefan Chulski <stefanc@...vell.com>
---
 drivers/net/ethernet/marvell/mvpp2/mvpp2_prs.c | 15 +++++++++++++++
 drivers/net/ethernet/marvell/mvpp2/mvpp2_prs.h |  3 ++-
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_prs.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_prs.c
index 0b2ff08..b968a20 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_prs.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_prs.c
@@ -1173,6 +1173,21 @@ static void mvpp2_prs_mh_init(struct mvpp2 *priv)
 	/* Update shadow table and hw entry */
 	mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_MH);
 	mvpp2_prs_hw_write(priv, &pe);
+
+	/* Set MH entry that skip parser */
+	pe.index = MVPP2_PE_MH_SKIP_PRS;
+	mvpp2_prs_tcam_lu_set(&pe, MVPP2_PRS_LU_MH);
+	mvpp2_prs_sram_shift_set(&pe, MVPP2_MH_SIZE,
+				 MVPP2_PRS_SRAM_OP_SEL_SHIFT_ADD);
+	mvpp2_prs_sram_bits_set(&pe, MVPP2_PRS_SRAM_LU_GEN_BIT, 1);
+	mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_FLOWS);
+
+	/* Mask all ports */
+	mvpp2_prs_tcam_port_map_set(&pe, 0);
+
+	/* Update shadow table and hw entry */
+	mvpp2_prs_shadow_set(priv, pe.index, MVPP2_PRS_LU_MH);
+	mvpp2_prs_hw_write(priv, &pe);
 }
 
 /* Set default entires (place holder) for promiscuous, non-promiscuous and
diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_prs.h b/drivers/net/ethernet/marvell/mvpp2/mvpp2_prs.h
index 4b68dd3..c16e5b9 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_prs.h
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_prs.h
@@ -103,10 +103,11 @@
 #define MVPP2_PE_MAC_RANGE_START	(MVPP2_PE_MAC_RANGE_END - \
 						MVPP2_PRS_MAC_RANGE_SIZE + 1)
 /* VLAN filtering range */
-#define MVPP2_PE_VID_FILT_RANGE_END     (MVPP2_PRS_TCAM_SRAM_SIZE - 31)
+#define MVPP2_PE_VID_FILT_RANGE_END     (MVPP2_PRS_TCAM_SRAM_SIZE - 32)
 #define MVPP2_PE_VID_FILT_RANGE_START   (MVPP2_PE_VID_FILT_RANGE_END - \
 					 MVPP2_PRS_VLAN_FILT_RANGE_SIZE + 1)
 #define MVPP2_PE_LAST_FREE_TID          (MVPP2_PE_MAC_RANGE_START - 1)
+#define MVPP2_PE_MH_SKIP_PRS		(MVPP2_PRS_TCAM_SRAM_SIZE - 31)
 #define MVPP2_PE_IP6_EXT_PROTO_UN	(MVPP2_PRS_TCAM_SRAM_SIZE - 30)
 #define MVPP2_PE_IP6_ADDR_UN		(MVPP2_PRS_TCAM_SRAM_SIZE - 29)
 #define MVPP2_PE_IP4_ADDR_UN		(MVPP2_PRS_TCAM_SRAM_SIZE - 28)
-- 
1.9.1