netdev - [PATCH 6.1 1/1] octeontx2-af: Add validation of lmac

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Message-ID: <20240329114133.45456-2-amishin@t-argos.ru>
Date: Fri, 29 Mar 2024 14:41:33 +0300
From: Aleksandr Mishin <amishin@...rgos.ru>
To: <stable@...r.kernel.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC: Aleksandr Mishin <amishin@...rgos.ru>, Sunil Goutham
	<sgoutham@...vell.com>, Linu Cherian <lcherian@...vell.com>, Geetha sowjanya
	<gakula@...vell.com>, Jerin Jacob <jerinj@...vell.com>, hariprasad
	<hkelam@...vell.com>, Subbaraya Sundeep <sbhatta@...vell.com>, "David S.
 Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub
 Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	<netdev@...r.kernel.org>, <lvc-project@...uxtesting.org>
Subject: [PATCH 6.1 1/1] octeontx2-af: Add validation of lmac

From: Hariprasad Kelam <hkelam@...vell.com>

commit 2f387525d484c0eca841b71842e1cd672220c20c upstream.

With the addition of new MAC blocks like CN10K RPM and CN10KB
RPM_USX, LMACs are noncontiguous. Though in most of the functions,
lmac validation checks exist but in few functions they are missing.
This patch adds the same.

Signed-off-by: Hariprasad Kelam <hkelam@...vell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@...vell.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Aleksandr Mishin <amishin@...rgos.ru>
---
 drivers/net/ethernet/marvell/octeontx2/af/cgx.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
index e6fe599f7bf3..93bc4c43c6e7 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
@@ -247,6 +247,9 @@ int cgx_lmac_addr_set(u8 cgx_id, u8 lmac_id, u8 *mac_addr)
 	int index, id;
 	u64 cfg;
 
+	if (!lmac)
+		return -ENODEV;
+
 	/* access mac_ops to know csr_offset */
 	mac_ops = cgx_dev->mac_ops;
 
@@ -564,15 +567,16 @@ void cgx_lmac_promisc_config(int cgx_id, int lmac_id, bool enable)
 {
 	struct cgx *cgx = cgx_get_pdata(cgx_id);
 	struct lmac *lmac = lmac_pdata(lmac_id, cgx);
-	u16 max_dmac = lmac->mac_to_index_bmap.max;
 	struct mac_ops *mac_ops;
+	u16 max_dmac;
 	int index, i;
 	u64 cfg = 0;
 	int id;
 
-	if (!cgx)
+	if (!cgx || !lmac)
 		return;
 
+	max_dmac = lmac->mac_to_index_bmap.max;
 	id = get_sequence_id_of_lmac(cgx, lmac_id);
 
 	mac_ops = cgx->mac_ops;
@@ -745,7 +749,7 @@ int cgx_get_fec_stats(void *cgxd, int lmac_id, struct cgx_fec_stats_rsp *rsp)
 	int corr_reg, uncorr_reg;
 	struct cgx *cgx = cgxd;
 
-	if (!cgx || lmac_id >= cgx->lmac_count)
+	if (!is_lmac_valid(cgx, lmac_id))
 		return -ENODEV;
 	fec_stats_count =
 		cgx_set_fec_stats_count(&cgx->lmac_idmap[lmac_id]->link_info);
-- 
2.30.2