linux-kernel - [PATCH] octeontx2-af: Increase maximum BPID channels

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Date: Wed, 6 Mar 2024 13:38:06 -0800
From: Radha Mohan Chintakuntla <radhac@...vell.com>
To: <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
        <pabeni@...hat.com>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <sgoutham@...vell.com>,
        <lcherian@...vell.com>, <gakula@...vell.com>, <hkelam@...vell.com>,
        <jerinj@...vell.com>, <sbhatta@...vell.com>
CC: Radha Mohan Chintakuntla <radhac@...vell.com>
Subject: [PATCH] octeontx2-af: Increase maximum BPID channels

Any NIX interface type can have maximum 256 channels. So increased the
backpressure ID count to 256 so that it can cover cn9k and cn10k SoCs that
have different NIX interface types with varied maximum channels.

Signed-off-by: Radha Mohan Chintakuntla <radhac@...vell.com>
---
 drivers/net/ethernet/marvell/octeontx2/af/mbox.h | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
index d5c4f810da61..223a2e39172c 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
@@ -1207,10 +1207,8 @@ struct nix_bp_cfg_req {
 	/* bpid_per_chan = 1 assigns separate bp id for each channel */
 };
 
-/* PF can be mapped to either CGX or LBK interface,
- * so maximum 64 channels are possible.
- */
-#define NIX_MAX_BPID_CHAN	64
+/* Maximum channels any single NIX interface can have */
+#define NIX_MAX_BPID_CHAN	256
 struct nix_bp_cfg_rsp {
 	struct mbox_msghdr hdr;
 	u16	chan_bpid[NIX_MAX_BPID_CHAN]; /* Channel and bpid mapping */
-- 
2.34.1