netdev - [PATCH net-next 5/9] netfilter: nft_set_pipapo: Use struct

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Date: Thu, 18 May 2023 12:07:55 +0200
From: Florian Westphal <fw@...len.de>
To: <netdev@...r.kernel.org>
Cc: Jakub Kicinski <kuba@...nel.org>,
	Eric Dumazet <edumazet@...gle.com>,
	Paolo Abeni <pabeni@...hat.com>,
	"David S. Miller" <davem@...emloft.net>,
	netfilter-devel <netfilter-devel@...r.kernel.org>,
	Christophe JAILLET <christophe.jaillet@...adoo.fr>,
	Simon Horman <simon.horman@...igine.com>
Subject: [PATCH net-next 5/9] netfilter: nft_set_pipapo: Use struct_size()

From: Christophe JAILLET <christophe.jaillet@...adoo.fr>

Use struct_size() instead of hand writing it.
This is less verbose and more informative.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
Reviewed-by: Simon Horman <simon.horman@...igine.com>
Signed-off-by: Florian Westphal <fw@...len.de>
---
 net/netfilter/nft_set_pipapo.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/net/netfilter/nft_set_pipapo.c b/net/netfilter/nft_set_pipapo.c
index 06d46d182634..34c684e121d3 100644
--- a/net/netfilter/nft_set_pipapo.c
+++ b/net/netfilter/nft_set_pipapo.c
@@ -1274,8 +1274,7 @@ static struct nft_pipapo_match *pipapo_clone(struct nft_pipapo_match *old)
 	struct nft_pipapo_match *new;
 	int i;
 
-	new = kmalloc(sizeof(*new) + sizeof(*dst) * old->field_count,
-		      GFP_KERNEL);
+	new = kmalloc(struct_size(new, f, old->field_count), GFP_KERNEL);
 	if (!new)
 		return ERR_PTR(-ENOMEM);
 
@@ -2059,8 +2058,7 @@ static int nft_pipapo_init(const struct nft_set *set,
 	if (field_count > NFT_PIPAPO_MAX_FIELDS)
 		return -EINVAL;
 
-	m = kmalloc(sizeof(*priv->match) + sizeof(*f) * field_count,
-		    GFP_KERNEL);
+	m = kmalloc(struct_size(m, f, field_count), GFP_KERNEL);
 	if (!m)
 		return -ENOMEM;
 
-- 
2.40.1