net: delete all instances of special processing for token ring

We are going to delete the Token ring support.  This removes any
special processing in the core networking for token ring, (aside
from net/tr.c itself), leaving the drivers and remaining tokenring
support present but inert.

The mass removal of the drivers and net/tr.c will be in a separate
commit, so that the history of these files that we still care
about won't have the giant deletion tied into their history.
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>

include/linux/if_arp.h

@@ -82,7 +82,7 @@
 #define ARPHRD_FCPL	786		/* Fibrechannel public loop	*/
 #define ARPHRD_FCFABRIC	787		/* Fibrechannel fabric		*/
 	/* 787->799 reserved for fibrechannel media types */
-#define ARPHRD_IEEE802_TR 800		/* Magic type ident for TR	*/
+/* 800 used to be used for token ring */
 #define ARPHRD_IEEE80211 801		/* IEEE 802.11			*/
 #define ARPHRD_IEEE80211_PRISM 802	/* IEEE 802.11 + Prism2 header  */
 #define ARPHRD_IEEE80211_RADIOTAP 803	/* IEEE 802.11 + radiotap header */

include/linux/ipx.h

@@ -38,7 +38,7 @@ struct ipx_interface_definition {
 #define IPX_FRAME_8022		2
 #define IPX_FRAME_ETHERII	3
 #define IPX_FRAME_8023		4
-#define IPX_FRAME_TR_8022       5 /* obsolete */
+/* obsolete token ring was	5 */
 	unsigned char ipx_special;
 #define IPX_SPECIAL_NONE	0
 #define IPX_PRIMARY		1

include/net/if_inet6.h

@@ -209,60 +209,6 @@ static inline void ipv6_eth_mc_map(const struct in6_addr *addr, char *buf)
 	memcpy(buf + 2, &addr->s6_addr32[3], sizeof(__u32));
 }
 
-static inline void ipv6_tr_mc_map(const struct in6_addr *addr, char *buf)
-{
-	/* All nodes FF01::1, FF02::1, FF02::1:FFxx:xxxx */
-
-	if (((addr->s6_addr[0] == 0xFF) &&
-	    ((addr->s6_addr[1] == 0x01) || (addr->s6_addr[1] == 0x02)) &&
-	     (addr->s6_addr16[1] == 0) &&
-	     (addr->s6_addr32[1] == 0) &&
-	     (addr->s6_addr32[2] == 0) &&
-	     (addr->s6_addr16[6] == 0) &&
-	     (addr->s6_addr[15] == 1)) ||
-	    ((addr->s6_addr[0] == 0xFF) &&
-	     (addr->s6_addr[1] == 0x02) &&
-	     (addr->s6_addr16[1] == 0) &&
-	     (addr->s6_addr32[1] == 0) &&
-	     (addr->s6_addr16[4] == 0) &&
-	     (addr->s6_addr[10] == 0) &&
-	     (addr->s6_addr[11] == 1) &&
-	     (addr->s6_addr[12] == 0xff)))
-	{
-		buf[0]=0xC0;
-		buf[1]=0x00;
-		buf[2]=0x01;
-		buf[3]=0x00;
-		buf[4]=0x00;
-		buf[5]=0x00;
-	/* All routers FF0x::2 */
-	} else if ((addr->s6_addr[0] ==0xff) &&
-		((addr->s6_addr[1] & 0xF0) == 0) &&
-		(addr->s6_addr16[1] == 0) &&
-		(addr->s6_addr32[1] == 0) &&
-		(addr->s6_addr32[2] == 0) &&
-		(addr->s6_addr16[6] == 0) &&
-		(addr->s6_addr[15] == 2))
-	{
-		buf[0]=0xC0;
-		buf[1]=0x00;
-		buf[2]=0x02;
-		buf[3]=0x00;
-		buf[4]=0x00;
-		buf[5]=0x00;
-	} else {
-		unsigned char i ; 
-		
-		i = addr->s6_addr[15] & 7 ; 
-		buf[0]=0xC0;
-		buf[1]=0x00;
-		buf[2]=0x00;
-		buf[3]=0x01 << i ; 
-		buf[4]=0x00;
-		buf[5]=0x00;
-	}
-}
-
 static inline void ipv6_arcnet_mc_map(const struct in6_addr *addr, char *buf)
 {
 	buf[0] = 0x00;

include/net/ip.h

@@ -141,23 +141,6 @@ static inline struct sk_buff *ip_finish_skb(struct sock *sk, struct flowi4 *fl4)
 extern int		ip4_datagram_connect(struct sock *sk, 
 					     struct sockaddr *uaddr, int addr_len);
 
-/*
- *	Map a multicast IP onto multicast MAC for type Token Ring.
- *      This conforms to RFC1469 Option 2 Multicasting i.e.
- *      using a functional address to transmit / receive 
- *      multicast packets.
- */
-
-static inline void ip_tr_mc_map(__be32 addr, char *buf)
-{
-	buf[0]=0xC0;
-	buf[1]=0x00;
-	buf[2]=0x00;
-	buf[3]=0x04;
-	buf[4]=0x00;
-	buf[5]=0x00;
-}
-
 struct ip_reply_arg {
 	struct kvec iov[1];   
 	int	    flags;

include/net/llc_pdu.h

@@ -13,7 +13,6 @@
  */
 
 #include <linux/if_ether.h>
-#include <linux/if_tr.h>
 
 /* Lengths of frame formats */
 #define LLC_PDU_LEN_I	4       /* header and 2 control bytes */
@@ -253,10 +252,6 @@ static inline void llc_pdu_decode_sa(struct sk_buff *skb, u8 *sa)
 {
 	if (skb->protocol == htons(ETH_P_802_2))
 		memcpy(sa, eth_hdr(skb)->h_source, ETH_ALEN);
-	else if (skb->protocol == htons(ETH_P_TR_802_2)) {
-		memcpy(sa, tr_hdr(skb)->saddr, ETH_ALEN);
-		*sa &= 0x7F;
-	}
 }
 
 /**
@@ -270,8 +265,6 @@ static inline void llc_pdu_decode_da(struct sk_buff *skb, u8 *da)
 {
 	if (skb->protocol == htons(ETH_P_802_2))
 		memcpy(da, eth_hdr(skb)->h_dest, ETH_ALEN);
-	else if (skb->protocol == htons(ETH_P_TR_802_2))
-		memcpy(da, tr_hdr(skb)->daddr, ETH_ALEN);
 }
 
 /**

net/802/p8022.c

 /*
- *	NET3:	Support for 802.2 demultiplexing off Ethernet (Token ring
- *		is kept separate see p8022tr.c)
+ *	NET3:	Support for 802.2 demultiplexing off Ethernet
  *		This program is free software; you can redistribute it and/or
  *		modify it under the terms of the GNU General Public License
  *		as published by the Free Software Foundation; either version

net/802/tr.c

@@ -604,7 +604,6 @@ static void tr_setup(struct net_device *dev)
 
 	dev->header_ops	= &tr_header_ops;
 
-	dev->type		= ARPHRD_IEEE802_TR;
 	dev->hard_header_len	= TR_HLEN;
 	dev->mtu		= 2000;
 	dev->addr_len		= TR_ALEN;

net/core/dev.c

@@ -300,10 +300,9 @@ static const unsigned short netdev_lock_type[] =
 	 ARPHRD_BIF, ARPHRD_SIT, ARPHRD_IPDDP, ARPHRD_IPGRE,
 	 ARPHRD_PIMREG, ARPHRD_HIPPI, ARPHRD_ASH, ARPHRD_ECONET,
 	 ARPHRD_IRDA, ARPHRD_FCPP, ARPHRD_FCAL, ARPHRD_FCPL,
-	 ARPHRD_FCFABRIC, ARPHRD_IEEE802_TR, ARPHRD_IEEE80211,
-	 ARPHRD_IEEE80211_PRISM, ARPHRD_IEEE80211_RADIOTAP, ARPHRD_PHONET,
-	 ARPHRD_PHONET_PIPE, ARPHRD_IEEE802154,
-	 ARPHRD_VOID, ARPHRD_NONE};
+	 ARPHRD_FCFABRIC, ARPHRD_IEEE80211, ARPHRD_IEEE80211_PRISM,
+	 ARPHRD_IEEE80211_RADIOTAP, ARPHRD_PHONET, ARPHRD_PHONET_PIPE,
+	 ARPHRD_IEEE802154, ARPHRD_VOID, ARPHRD_NONE};
 
 static const char *const netdev_lock_name[] =
 	{"_xmit_NETROM", "_xmit_ETHER", "_xmit_EETHER", "_xmit_AX25",
@@ -318,10 +317,9 @@ static const char *const netdev_lock_name[] =
 	 "_xmit_BIF", "_xmit_SIT", "_xmit_IPDDP", "_xmit_IPGRE",
 	 "_xmit_PIMREG", "_xmit_HIPPI", "_xmit_ASH", "_xmit_ECONET",
 	 "_xmit_IRDA", "_xmit_FCPP", "_xmit_FCAL", "_xmit_FCPL",
-	 "_xmit_FCFABRIC", "_xmit_IEEE802_TR", "_xmit_IEEE80211",
-	 "_xmit_IEEE80211_PRISM", "_xmit_IEEE80211_RADIOTAP", "_xmit_PHONET",
-	 "_xmit_PHONET_PIPE", "_xmit_IEEE802154",
-	 "_xmit_VOID", "_xmit_NONE"};
+	 "_xmit_FCFABRIC", "_xmit_IEEE80211", "_xmit_IEEE80211_PRISM",
+	 "_xmit_IEEE80211_RADIOTAP", "_xmit_PHONET", "_xmit_PHONET_PIPE",
+	 "_xmit_IEEE802154", "_xmit_VOID", "_xmit_NONE"};
 
 static struct lock_class_key netdev_xmit_lock_key[ARRAY_SIZE(netdev_lock_type)];
 static struct lock_class_key netdev_addr_lock_key[ARRAY_SIZE(netdev_lock_type)];

net/ipv4/Kconfig

@@ -262,8 +262,8 @@ config ARPD
 	bool "IP: ARP daemon support"
 	---help---
 	  The kernel maintains an internal cache which maps IP addresses to
-	  hardware addresses on the local network, so that Ethernet/Token Ring/
-	  etc. frames are sent to the proper address on the physical networking
+	  hardware addresses on the local network, so that Ethernet
+	  frames are sent to the proper address on the physical networking
 	  layer. Normally, kernel uses the ARP protocol to resolve these
 	  mappings.
 

net/ipv4/arp.c

@@ -89,7 +89,6 @@
 #include <linux/etherdevice.h>
 #include <linux/fddidevice.h>
 #include <linux/if_arp.h>
-#include <linux/trdevice.h>
 #include <linux/skbuff.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
@@ -193,9 +192,6 @@ int arp_mc_map(__be32 addr, u8 *haddr, struct net_device *dev, int dir)
 	case ARPHRD_IEEE802:
 		ip_eth_mc_map(addr, haddr);
 		return 0;
-	case ARPHRD_IEEE802_TR:
-		ip_tr_mc_map(addr, haddr);
-		return 0;
 	case ARPHRD_INFINIBAND:
 		ip_ib_mc_map(addr, dev->broadcast, haddr);
 		return 0;
@@ -647,12 +643,6 @@ struct sk_buff *arp_create(int type, int ptype, __be32 dest_ip,
 		arp->ar_hrd = htons(ARPHRD_ETHER);
 		arp->ar_pro = htons(ETH_P_IP);
 		break;
-#endif
-#if IS_ENABLED(CONFIG_TR)
-	case ARPHRD_IEEE802_TR:
-		arp->ar_hrd = htons(ARPHRD_IEEE802);
-		arp->ar_pro = htons(ETH_P_IP);
-		break;
 #endif
 	}
 
@@ -751,11 +741,10 @@ static int arp_process(struct sk_buff *skb)
 			goto out;
 		break;
 	case ARPHRD_ETHER:
-	case ARPHRD_IEEE802_TR:
 	case ARPHRD_FDDI:
 	case ARPHRD_IEEE802:
 		/*
-		 * ETHERNET, Token Ring and Fibre Channel (which are IEEE 802
+		 * ETHERNET, and Fibre Channel (which are IEEE 802
 		 * devices, according to RFC 2625) devices will accept ARP
 		 * hardware types of either 1 (Ethernet) or 6 (IEEE 802.2).
 		 * This is the case also of FDDI, where the RFC 1390 says that

net/ipv4/ipconfig.c

@@ -808,8 +808,6 @@ static void __init ic_bootp_send_if(struct ic_device *d, unsigned long jiffies_d
 	b->op = BOOTP_REQUEST;
 	if (dev->type < 256) /* check for false types */
 		b->htype = dev->type;
-	else if (dev->type == ARPHRD_IEEE802_TR) /* fix for token ring */
-		b->htype = ARPHRD_IEEE802;
 	else if (dev->type == ARPHRD_FDDI)
 		b->htype = ARPHRD_ETHER;
 	else {

net/ipv6/addrconf.c

@@ -1575,7 +1575,6 @@ static int ipv6_generate_eui64(u8 *eui, struct net_device *dev)
 	switch (dev->type) {
 	case ARPHRD_ETHER:
 	case ARPHRD_FDDI:
-	case ARPHRD_IEEE802_TR:
 		return addrconf_ifid_eui48(eui, dev);
 	case ARPHRD_ARCNET:
 		return addrconf_ifid_arcnet(eui, dev);
@@ -2444,7 +2443,6 @@ static void addrconf_dev_config(struct net_device *dev)
 
 	if ((dev->type != ARPHRD_ETHER) &&
 	    (dev->type != ARPHRD_FDDI) &&
-	    (dev->type != ARPHRD_IEEE802_TR) &&
 	    (dev->type != ARPHRD_ARCNET) &&
 	    (dev->type != ARPHRD_INFINIBAND) &&
 	    (dev->type != ARPHRD_IEEE802154)) {

net/ipv6/ndisc.c

@@ -327,9 +327,6 @@ int ndisc_mc_map(const struct in6_addr *addr, char *buf, struct net_device *dev,
 	case ARPHRD_FDDI:
 		ipv6_eth_mc_map(addr, buf);
 		return 0;
-	case ARPHRD_IEEE802_TR:
-		ipv6_tr_mc_map(addr,buf);
-		return 0;
 	case ARPHRD_ARCNET:
 		ipv6_arcnet_mc_map(addr, buf);
 		return 0;
@@ -795,20 +792,6 @@ static void ndisc_recv_ns(struct sk_buff *skb)
 
 		if (ifp->flags & (IFA_F_TENTATIVE|IFA_F_OPTIMISTIC)) {
 			if (dad) {
-				if (dev->type == ARPHRD_IEEE802_TR) {
-					const unsigned char *sadr;
-					sadr = skb_mac_header(skb);
-					if (((sadr[8] ^ dev->dev_addr[0]) & 0x7f) == 0 &&
-					    sadr[9] == dev->dev_addr[1] &&
-					    sadr[10] == dev->dev_addr[2] &&
-					    sadr[11] == dev->dev_addr[3] &&
-					    sadr[12] == dev->dev_addr[4] &&
-					    sadr[13] == dev->dev_addr[5]) {
-						/* looped-back to us */
-						goto out;
-					}
-				}
-
 				/*
 				 * We are colliding with another node
 				 * who is doing DAD

net/ipx/af_ipx.c

@@ -983,10 +983,6 @@ static int ipxitf_create(struct ipx_interface_definition *idef)
 		goto out;
 
 	switch (idef->ipx_dlink_type) {
-	case IPX_FRAME_TR_8022:
-		printk(KERN_WARNING "IPX frame type 802.2TR is "
-			"obsolete Use 802.2 instead.\n");
-		/* fall through */
 	case IPX_FRAME_8022:
 		dlink_type 	= htons(ETH_P_802_2);
 		datalink 	= p8022_datalink;
@@ -996,10 +992,7 @@ static int ipxitf_create(struct ipx_interface_definition *idef)
 			dlink_type 	= htons(ETH_P_IPX);
 			datalink 	= pEII_datalink;
 			break;
-		} else
-			printk(KERN_WARNING "IPX frame type EtherII over "
-					"token-ring is obsolete. Use SNAP "
-					"instead.\n");
+		}
 		/* fall through */
 	case IPX_FRAME_SNAP:
 		dlink_type 	= htons(ETH_P_SNAP);
@@ -1275,7 +1268,6 @@ const char *ipx_frame_name(__be16 frame)
 	case ETH_P_802_2:	rc = "802.2";	break;
 	case ETH_P_SNAP:	rc = "SNAP";	break;
 	case ETH_P_802_3:	rc = "802.3";	break;
-	case ETH_P_TR_802_2:	rc = "802.2TR";	break;
 	}
 
 	return rc;

net/llc/af_llc.c

@@ -71,8 +71,7 @@ static inline u16 llc_ui_next_link_no(int sap)
  */
 static inline __be16 llc_proto_type(u16 arphrd)
 {
-	return arphrd == ARPHRD_IEEE802_TR ?
-			 htons(ETH_P_TR_802_2) : htons(ETH_P_802_2);
+	return htons(ETH_P_802_2);
 }
 
 /**

net/llc/llc_output.c

@@ -14,9 +14,7 @@
  */
 
 #include <linux/if_arp.h>
-#include <linux/if_tr.h>
 #include <linux/netdevice.h>
-#include <linux/trdevice.h>
 #include <linux/skbuff.h>
 #include <linux/export.h>
 #include <net/llc.h>
@@ -37,7 +35,6 @@ int llc_mac_hdr_init(struct sk_buff *skb,
 	int rc = -EINVAL;
 
 	switch (skb->dev->type) {
-	case ARPHRD_IEEE802_TR:
 	case ARPHRD_ETHER:
 	case ARPHRD_LOOPBACK:
 		rc = dev_hard_header(skb, skb->dev, ETH_P_802_2, da, sa,

net/llc/llc_sap.c

@@ -31,10 +31,6 @@ static int llc_mac_header_len(unsigned short devtype)
 	case ARPHRD_ETHER:
 	case ARPHRD_LOOPBACK:
 		return sizeof(struct ethhdr);
-#if defined(CONFIG_TR) || defined(CONFIG_TR_MODULE)
-	case ARPHRD_IEEE802_TR:
-		return sizeof(struct trh_hdr);
-#endif
 	}
 	return 0;
 }

net/sysctl_net.c

@@ -26,10 +26,6 @@
 #include <linux/if_ether.h>
 #endif
 
-#ifdef CONFIG_TR
-#include <linux/if_tr.h>
-#endif
-
 static struct ctl_table_set *
 net_ctl_header_lookup(struct ctl_table_root *root, struct nsproxy *namespaces)
 {