linux-kernel - [PATCH] net: ___neigh_lookup_noref(): remove redundant parameters

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Message-Id: <20231204185943.68-1-yx.0xffff@gmail.com>
Date:   Tue,  5 Dec 2023 02:59:43 +0800
From:   YangXin <yx.0xffff@...il.com>
To:     davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] net: ___neigh_lookup_noref(): remove redundant parameters

key_eq() and hash() are functions of struct neigh_table, so we just need to call tbl->key_eq() and tbl->hash(), instead of passing them in as parameters.

Signed-off-by: YangXin <yx.0xffff@...il.com>

diff --git a/include/net/arp.h b/include/net/arp.h
index e8747e0713c7..c3a329f759af 100644
--- a/include/net/arp.h
+++ b/include/net/arp.h
@@ -24,7 +24,7 @@ static inline struct neighbour *__ipv4_neigh_lookup_noref(struct net_device *dev
 	if (dev->flags & (IFF_LOOPBACK | IFF_POINTOPOINT))
 		key = INADDR_ANY;
 
-	return ___neigh_lookup_noref(&arp_tbl, neigh_key_eq32, arp_hashfn, &key, dev);
+	return ___neigh_lookup_noref(&arp_tbl, neigh_key_eq32, &key, dev);
 }
 #else
 static inline
diff --git a/include/net/ndisc.h b/include/net/ndisc.h
index 9bbdf6eaa942..023fb7ebb63c 100644
--- a/include/net/ndisc.h
+++ b/include/net/ndisc.h
@@ -380,15 +380,14 @@ static inline u32 ndisc_hashfn(const void *pkey, const struct net_device *dev, _
 
 static inline struct neighbour *__ipv6_neigh_lookup_noref(struct net_device *dev, const void *pkey)
 {
-	return ___neigh_lookup_noref(&nd_tbl, neigh_key_eq128, ndisc_hashfn, pkey, dev);
+	return ___neigh_lookup_noref(&nd_tbl, neigh_key_eq128, pkey, dev);
 }
 
 static inline
 struct neighbour *__ipv6_neigh_lookup_noref_stub(struct net_device *dev,
 						 const void *pkey)
 {
-	return ___neigh_lookup_noref(ipv6_stub->nd_tbl, neigh_key_eq128,
-				     ndisc_hashfn, pkey, dev);
+	return ___neigh_lookup_noref(ipv6_stub->nd_tbl, neigh_key_eq128, pkey, dev);
 }
 
 static inline struct neighbour *__ipv6_neigh_lookup(struct net_device *dev, const void *pkey)
diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index 0d28172193fa..e21dbfc612b4 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -292,10 +292,6 @@ static inline bool neigh_key_eq128(const struct neighbour *n, const void *pkey)
 
 static inline struct neighbour *___neigh_lookup_noref(
 	struct neigh_table *tbl,
-	bool (*key_eq)(const struct neighbour *n, const void *pkey),
-	__u32 (*hash)(const void *pkey,
-		      const struct net_device *dev,
-		      __u32 *hash_rnd),
 	const void *pkey,
 	struct net_device *dev)
 {
@@ -303,11 +299,11 @@ static inline struct neighbour *___neigh_lookup_noref(
 	struct neighbour *n;
 	u32 hash_val;
 
-	hash_val = hash(pkey, dev, nht->hash_rnd) >> (32 - nht->hash_shift);
+	hash_val = tbl->hash(pkey, dev, nht->hash_rnd) >> (32 - nht->hash_shift);
 	for (n = rcu_dereference(nht->hash_buckets[hash_val]);
 	     n != NULL;
 	     n = rcu_dereference(n->next)) {
-		if (n->dev == dev && key_eq(n, pkey))
+		if (n->dev == dev && tbl->key_eq(n, pkey))
 			return n;
 	}
 
@@ -318,7 +314,7 @@ static inline struct neighbour *__neigh_lookup_noref(struct neigh_table *tbl,
 						     const void *pkey,
 						     struct net_device *dev)
 {
-	return ___neigh_lookup_noref(tbl, tbl->key_eq, tbl->hash, pkey, dev);
+	return ___neigh_lookup_noref(tbl, pkey, dev);
 }
 
 static inline void neigh_confirm(struct neighbour *n)
-- 
2.33.0