netdev - [PATCH v1 net-next 01/15] ipv6: ndisc: Remove __in6_dev_get() in pndisc

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Message-ID: <20250616233417.1153427-2-kuni1840@gmail.com>
Date: Mon, 16 Jun 2025 16:28:30 -0700
From: Kuniyuki Iwashima <kuni1840@...il.com>
To: "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>
Cc: Simon Horman <horms@...nel.org>,
	Kuniyuki Iwashima <kuniyu@...gle.com>,
	Kuniyuki Iwashima <kuni1840@...il.com>,
	netdev@...r.kernel.org
Subject: [PATCH v1 net-next 01/15] ipv6: ndisc: Remove __in6_dev_get() in pndisc_{constructor,destructor}().

From: Kuniyuki Iwashima <kuniyu@...gle.com>

ipv6_dev_mc_{inc,dec}() has the same check.

Let's remove __in6_dev_get() from pndisc_constructor() and
pndisc_destructor().

Signed-off-by: Kuniyuki Iwashima <kuniyu@...gle.com>
---
 net/ipv6/ndisc.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index ecb5c4b8518f..beb1814a1ac2 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -377,11 +377,12 @@ static int ndisc_constructor(struct neighbour *neigh)
 static int pndisc_constructor(struct pneigh_entry *n)
 {
 	struct in6_addr *addr = (struct in6_addr *)&n->key;
-	struct in6_addr maddr;
 	struct net_device *dev = n->dev;
+	struct in6_addr maddr;
 
-	if (!dev || !__in6_dev_get(dev))
+	if (!dev)
 		return -EINVAL;
+
 	addrconf_addr_solict_mult(addr, &maddr);
 	ipv6_dev_mc_inc(dev, &maddr);
 	return 0;
@@ -390,11 +391,12 @@ static int pndisc_constructor(struct pneigh_entry *n)
 static void pndisc_destructor(struct pneigh_entry *n)
 {
 	struct in6_addr *addr = (struct in6_addr *)&n->key;
-	struct in6_addr maddr;
 	struct net_device *dev = n->dev;
+	struct in6_addr maddr;
 
-	if (!dev || !__in6_dev_get(dev))
+	if (!dev)
 		return;
+
 	addrconf_addr_solict_mult(addr, &maddr);
 	ipv6_dev_mc_dec(dev, &maddr);
 }
-- 
2.49.0