netdev - [net-next PATCH 11/11] octeontx2-af: configure npc for cn10k to allow packets from cpt

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Date:   Tue, 17 Aug 2021 10:14:53 +0530
From:   Subbaraya Sundeep <sbhatta@...vell.com>
To:     <davem@...emloft.net>, <kuba@...nel.org>, <netdev@...r.kernel.org>
CC:     <sgoutham@...vell.com>, <hkelam@...vell.com>, <gakula@...vell.com>,
        Vidya <vvelumuri@...vell.com>,
        Subbaraya Sundeep <sbhatta@...vell.com>
Subject: [net-next PATCH 11/11] octeontx2-af: configure npc for cn10k to allow packets from cpt

From: Vidya <vvelumuri@...vell.com>

On CN10K, the higher bits in the channel number represents the CPT
channel number. Mask out these higher bits in the npc configuration
to allow packets from cpt for parsing.

Signed-off-by: Vidya <vvelumuri@...vell.com>
Signed-off-by: Sunil Goutham <sgoutham@...vell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@...vell.com>
---
 drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
index 504dfa5..6f23100 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
@@ -724,7 +724,17 @@ void rvu_npc_install_promisc_entry(struct rvu *rvu, u16 pcifunc,
 		action.index = pfvf->promisc_mce_idx;
 	}
 
-	req.chan_mask = 0xFFFU;
+	/* For cn10k the upper two bits of the channel number are
+	 * cpt channel number. with masking out these bits in the
+	 * mcam entry, same entry used for NIX will allow packets
+	 * received from cpt for parsing.
+	 */
+	if (!is_rvu_otx2(rvu)) {
+		req.chan_mask = NIX_CHAN_CPT_X2P_MASK;
+	} else {
+		req.chan_mask = 0xFFFU;
+	}
+
 	if (chan_cnt > 1) {
 		if (!is_power_of_2(chan_cnt)) {
 			dev_err(rvu->dev,
-- 
2.7.4