Remove DECnet support from kernel

DECnet is an obsolete network protocol that receives more attention
from kernel janitors than users. It belongs in computer protocol
history museum not in Linux kernel.

It has been "Orphaned" in kernel since 2010. The iproute2 support
for DECnet was dropped in 5.0 release. The documentation link on
Sourceforge says it is abandoned there as well.

Leave the UAPI alone to keep userspace programs compiling.
This means that there is still an empty neighbour table
for AF_DECNET.

The table of /proc/sys/net entries was updated to match
current directories and reformatted to be alphabetical.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: David Ahern <dsahern@kernel.org>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 32 deletions

diff --git a/include/net/dn_neigh.h b/include/net/dn_neigh.h
deleted file mode 100644
index 1f7df98bfc33..000000000000
--- a/include/net/dn_neigh.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _NET_DN_NEIGH_H
-#define _NET_DN_NEIGH_H
-
-#include <net/neighbour.h>
-
-/*
- * The position of the first two fields of
- * this structure are critical - SJW
- */
-struct dn_neigh {
-        struct neighbour n;
-	__le16 addr;
-        unsigned long flags;
-#define DN_NDFLAG_R1    0x0001 /* Router L1      */
-#define DN_NDFLAG_R2    0x0002 /* Router L2      */
-#define DN_NDFLAG_P3    0x0004 /* Phase III Node */
-        unsigned long blksize;
-	__u8 priority;
-};
-
-void dn_neigh_init(void);
-void dn_neigh_cleanup(void);
-int dn_neigh_router_hello(struct net *net, struct sock *sk, struct sk_buff *skb);
-int dn_neigh_endnode_hello(struct net *net, struct sock *sk, struct sk_buff *skb);
-void dn_neigh_pointopoint_hello(struct sk_buff *skb);
-int dn_neigh_elist(struct net_device *dev, unsigned char *ptr, int n);
-int dn_to_neigh_output(struct net *net, struct sock *sk, struct sk_buff *skb);
-
-extern struct neigh_table dn_neigh_table;
-
-#endif /* _NET_DN_NEIGH_H */