netdev - [PATCH v2 net-next 8/9] xfrm: snmp: do not use SNMP_MIB

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Message-ID: <20250905165813.1470708-9-edumazet@google.com>
Date: Fri,  5 Sep 2025 16:58:12 +0000
From: Eric Dumazet <edumazet@...gle.com>
To: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>
Cc: Simon Horman <horms@...nel.org>, David Ahern <dsahern@...nel.org>, 
	Jamie Bainbridge <jamie.bainbridge@...il.com>, Abhishek Rawal <rawal.abhishek92@...il.com>, 
	netdev@...r.kernel.org, eric.dumazet@...il.com, 
	Eric Dumazet <edumazet@...gle.com>, Steffen Klassert <steffen.klassert@...unet.com>
Subject: [PATCH v2 net-next 8/9] xfrm: snmp: do not use SNMP_MIB_SENTINEL anymore

Use ARRAY_SIZE(), so that we know the limit at compile time.

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
Cc: Steffen Klassert <steffen.klassert@...unet.com>
---
 net/xfrm/xfrm_proc.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/net/xfrm/xfrm_proc.c b/net/xfrm/xfrm_proc.c
index 8e07dd614b0b..5e1fd6b1d503 100644
--- a/net/xfrm/xfrm_proc.c
+++ b/net/xfrm/xfrm_proc.c
@@ -45,21 +45,21 @@ static const struct snmp_mib xfrm_mib_list[] = {
 	SNMP_MIB_ITEM("XfrmInStateDirError", LINUX_MIB_XFRMINSTATEDIRERROR),
 	SNMP_MIB_ITEM("XfrmInIptfsError", LINUX_MIB_XFRMINIPTFSERROR),
 	SNMP_MIB_ITEM("XfrmOutNoQueueSpace", LINUX_MIB_XFRMOUTNOQSPACE),
-	SNMP_MIB_SENTINEL
 };
 
 static int xfrm_statistics_seq_show(struct seq_file *seq, void *v)
 {
-	unsigned long buff[LINUX_MIB_XFRMMAX];
+	unsigned long buff[ARRAY_SIZE(xfrm_mib_list)];
+	const int cnt = ARRAY_SIZE(xfrm_mib_list);
 	struct net *net = seq->private;
 	int i;
 
-	memset(buff, 0, sizeof(unsigned long) * LINUX_MIB_XFRMMAX);
+	memset(buff, 0, sizeof(buff));
 
 	xfrm_state_update_stats(net);
-	snmp_get_cpu_field_batch(buff, xfrm_mib_list,
-				 net->mib.xfrm_statistics);
-	for (i = 0; xfrm_mib_list[i].name; i++)
+	snmp_get_cpu_field_batch_cnt(buff, xfrm_mib_list, cnt,
+				     net->mib.xfrm_statistics);
+	for (i = 0; i < cnt; i++)
 		seq_printf(seq, "%-24s\t%lu\n", xfrm_mib_list[i].name,
 						buff[i]);
 
-- 
2.51.0.355.g5224444f11-goog