netdev - [PATCH v1 net-next] neighbour: Remove NEIGH_DN

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Message-ID: <20241014235216.10785-1-kuniyu@amazon.com>
Date: Mon, 14 Oct 2024 16:52:16 -0700
From: Kuniyuki Iwashima <kuniyu@...zon.com>
To: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
	<edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
	<pabeni@...hat.com>
CC: Kuniyuki Iwashima <kuniyu@...zon.com>, Kuniyuki Iwashima
	<kuni1840@...il.com>, <netdev@...r.kernel.org>
Subject: [PATCH v1 net-next] neighbour: Remove NEIGH_DN_TABLE.

Since commit 1202cdd66531 ("Remove DECnet support from kernel"),
NEIGH_DN_TABLE is no longer used.

MPLS has implicit dependency on it in nla_put_via(), but nla_get_via()
does not support DECnet.

Let's remove NEIGH_DN_TABLE.

Now, neigh_tables[] has only 2 elements and no extra iteration
for DECnet in many places.

Signed-off-by: Kuniyuki Iwashima <kuniyu@...zon.com>
---
 include/net/neighbour.h | 1 -
 net/mpls/af_mpls.c      | 2 +-
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index a44f262a7384..3887ed9e5026 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -239,7 +239,6 @@ struct neigh_table {
 enum {
 	NEIGH_ARP_TABLE = 0,
 	NEIGH_ND_TABLE = 1,
-	NEIGH_DN_TABLE = 2,
 	NEIGH_NR_TABLES,
 	NEIGH_LINK_TABLE = NEIGH_NR_TABLES /* Pseudo table for neigh_xmit */
 };
diff --git a/net/mpls/af_mpls.c b/net/mpls/af_mpls.c
index df62638b6498..a0573847bc55 100644
--- a/net/mpls/af_mpls.c
+++ b/net/mpls/af_mpls.c
@@ -1664,7 +1664,7 @@ static int nla_put_via(struct sk_buff *skb,
 		       u8 table, const void *addr, int alen)
 {
 	static const int table_to_family[NEIGH_NR_TABLES + 1] = {
-		AF_INET, AF_INET6, AF_DECnet, AF_PACKET,
+		AF_INET, AF_INET6, AF_PACKET,
 	};
 	struct nlattr *nla;
 	struct rtvia *via;
-- 
2.39.5 (Apple Git-154)