linux-kernel - [PATCH nf-next v3 2/4] ipvs: Consistently use array_size() in ip_vs_conn

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Message-Id: <20230409-ipvs-cleanup-v3-2-5149ea34b0b9@kernel.org>
Date:   Mon, 17 Apr 2023 17:10:46 +0200
From:   Simon Horman <horms@...nel.org>
To:     Julian Anastasov <ja@....bg>
Cc:     Pablo Neira Ayuso <pablo@...filter.org>,
        Jozsef Kadlecsik <kadlec@...filter.org>,
        Florian Westphal <fw@...len.de>, netdev@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        David Ahern <dsahern@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, lvs-devel@...r.kernel.org,
        linux-kernel@...r.kernel.org, netfilter-devel@...r.kernel.org,
        coreteam@...filter.org,
        Horatiu Vultur <horatiu.vultur@...rochip.com>
Subject: [PATCH nf-next v3 2/4] ipvs: Consistently use array_size() in
 ip_vs_conn_init()

Consistently use array_size() to calculate the size of ip_vs_conn_tab
in bytes.

Flagged by Coccinelle:
 WARNING: array_size is already used (line 1498) to compute the same size

No functional change intended.
Compile tested only.

Signed-off-by: Simon Horman <horms@...nel.org>
Reviewed-by: Horatiu Vultur <horatiu.vultur@...rochip.com>
---
v3
- Correct division by 1024. It was applied to the wrong variable in v2.
- Add Horatiu's Reviewed-by tag
v2
- Retain division by 1024, which was lost in v1
---
 net/netfilter/ipvs/ip_vs_conn.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/net/netfilter/ipvs/ip_vs_conn.c b/net/netfilter/ipvs/ip_vs_conn.c
index 13534e02346c..928e64653837 100644
--- a/net/netfilter/ipvs/ip_vs_conn.c
+++ b/net/netfilter/ipvs/ip_vs_conn.c
@@ -1481,6 +1481,7 @@ void __net_exit ip_vs_conn_net_cleanup(struct netns_ipvs *ipvs)
 
 int __init ip_vs_conn_init(void)
 {
+	size_t tab_array_size;
 	int idx;
 
 	/* Compute size and mask */
@@ -1494,8 +1495,9 @@ int __init ip_vs_conn_init(void)
 	/*
 	 * Allocate the connection hash table and initialize its list heads
 	 */
-	ip_vs_conn_tab = vmalloc(array_size(ip_vs_conn_tab_size,
-					    sizeof(*ip_vs_conn_tab)));
+	tab_array_size = array_size(ip_vs_conn_tab_size,
+				    sizeof(*ip_vs_conn_tab));
+	ip_vs_conn_tab = vmalloc(tab_array_size);
 	if (!ip_vs_conn_tab)
 		return -ENOMEM;
 
@@ -1508,10 +1510,8 @@ int __init ip_vs_conn_init(void)
 		return -ENOMEM;
 	}
 
-	pr_info("Connection hash table configured "
-		"(size=%d, memory=%ldKbytes)\n",
-		ip_vs_conn_tab_size,
-		(long)(ip_vs_conn_tab_size*sizeof(*ip_vs_conn_tab))/1024);
+	pr_info("Connection hash table configured (size=%d, memory=%zdKbytes)\n",
+		ip_vs_conn_tab_size, tab_array_size / 1024);
 	IP_VS_DBG(0, "Each connection entry needs %zd bytes at least\n",
 		  sizeof(struct ip_vs_conn));
 

-- 
2.30.2