netdev - [PATCH net-next 6/9] ipv4: convert igmp_link_local_mcast

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Date:   Wed, 31 Mar 2021 10:52:10 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: [PATCH net-next 6/9] ipv4: convert igmp_link_local_mcast_reports sysctl to u8

From: Eric Dumazet <edumazet@...gle.com>

This sysctl is a bool, can use less storage.

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 include/net/netns/ipv4.h   | 2 +-
 net/ipv4/sysctl_net_ipv4.c | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
index eb6ca07d3b0f5a3e0e90eee3e3049c0a0cc31d3d..fafcedf643832d80ebbd3d1c7c0fd8ac0866b99a 100644
--- a/include/net/netns/ipv4.h
+++ b/include/net/netns/ipv4.h
@@ -197,9 +197,9 @@ struct netns_ipv4 {
 	u8 sysctl_udp_l3mdev_accept;
 #endif
 
+	u8 sysctl_igmp_llm_reports;
 	int sysctl_igmp_max_memberships;
 	int sysctl_igmp_max_msf;
-	int sysctl_igmp_llm_reports;
 	int sysctl_igmp_qrv;
 
 	struct ping_group_range ping_group_range;
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index ad75d6bb2df7f60afda5c4a4f6524885a8b982c2..fd2b35065bb21195f65b80d7a815221320f08eb3 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -848,9 +848,9 @@ static struct ctl_table ipv4_net_table[] = {
 	{
 		.procname	= "igmp_link_local_mcast_reports",
 		.data		= &init_net.ipv4.sysctl_igmp_llm_reports,
-		.maxlen		= sizeof(int),
+		.maxlen		= sizeof(u8),
 		.mode		= 0644,
-		.proc_handler	= proc_dointvec
+		.proc_handler	= proc_dou8vec_minmax,
 	},
 	{
 		.procname	= "igmp_max_memberships",
-- 
2.31.0.291.g576ba9dcdaf-goog