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c4ea94ab37
The typedef for dn_address has been removed in favour of using __le16 or __u16 directly as appropriate. All the DECnet header files are updated accordingly. The byte ordering of dn_eth2dn() and dn_dn2eth() are both changed since just about all their callers wanted network order rather than host order, so the conversion is now done in the functions themselves. Several missed endianess conversions have been picked up during the conversion process. The nh_gw field in struct dn_fib_info has been changed from a 32 bit field to 16 bits as it ought to be. One or two cases of using htons rather than dn_htons in the routing code have been found and fixed. There are still a few warnings to fix, but this patch deals with the important cases. Signed-off-by: Steven Whitehouse <steve@chygwyn.com> Signed-off-by: Patrick Caulfield <patrick@tykepenguin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
113 lines
4.2 KiB
C
113 lines
4.2 KiB
C
#ifndef _NET_DN_ROUTE_H
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#define _NET_DN_ROUTE_H
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/******************************************************************************
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(c) 1995-1998 E.M. Serrat emserrat@geocities.com
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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*******************************************************************************/
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extern struct sk_buff *dn_alloc_skb(struct sock *sk, int size, gfp_t pri);
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extern int dn_route_output_sock(struct dst_entry **pprt, struct flowi *, struct sock *sk, int flags);
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extern int dn_cache_dump(struct sk_buff *skb, struct netlink_callback *cb);
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extern int dn_cache_getroute(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg);
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extern void dn_rt_cache_flush(int delay);
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/* Masks for flags field */
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#define DN_RT_F_PID 0x07 /* Mask for packet type */
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#define DN_RT_F_PF 0x80 /* Padding Follows */
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#define DN_RT_F_VER 0x40 /* Version =0 discard packet if ==1 */
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#define DN_RT_F_IE 0x20 /* Intra Ethernet, Reserved in short pkt */
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#define DN_RT_F_RTS 0x10 /* Packet is being returned to sender */
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#define DN_RT_F_RQR 0x08 /* Return packet to sender upon non-delivery */
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/* Mask for types of routing packets */
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#define DN_RT_PKT_MSK 0x06
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/* Types of routing packets */
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#define DN_RT_PKT_SHORT 0x02 /* Short routing packet */
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#define DN_RT_PKT_LONG 0x06 /* Long routing packet */
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/* Mask for control/routing selection */
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#define DN_RT_PKT_CNTL 0x01 /* Set to 1 if a control packet */
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/* Types of control packets */
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#define DN_RT_CNTL_MSK 0x0f /* Mask for control packets */
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#define DN_RT_PKT_INIT 0x01 /* Initialisation packet */
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#define DN_RT_PKT_VERI 0x03 /* Verification Message */
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#define DN_RT_PKT_HELO 0x05 /* Hello and Test Message */
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#define DN_RT_PKT_L1RT 0x07 /* Level 1 Routing Message */
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#define DN_RT_PKT_L2RT 0x09 /* Level 2 Routing Message */
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#define DN_RT_PKT_ERTH 0x0b /* Ethernet Router Hello */
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#define DN_RT_PKT_EEDH 0x0d /* Ethernet EndNode Hello */
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/* Values for info field in hello message */
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#define DN_RT_INFO_TYPE 0x03 /* Type mask */
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#define DN_RT_INFO_L1RT 0x02 /* L1 Router */
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#define DN_RT_INFO_L2RT 0x01 /* L2 Router */
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#define DN_RT_INFO_ENDN 0x03 /* EndNode */
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#define DN_RT_INFO_VERI 0x04 /* Verification Reqd. */
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#define DN_RT_INFO_RJCT 0x08 /* Reject Flag, Reserved */
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#define DN_RT_INFO_VFLD 0x10 /* Verification Failed, Reserved */
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#define DN_RT_INFO_NOML 0x20 /* No Multicast traffic accepted */
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#define DN_RT_INFO_BLKR 0x40 /* Blocking Requested */
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/*
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* The fl structure is what we used to look up the route.
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* The rt_saddr & rt_daddr entries are the same as key.saddr & key.daddr
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* except for local input routes, where the rt_saddr = fl.fld_dst and
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* rt_daddr = fl.fld_src to allow the route to be used for returning
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* packets to the originating host.
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*/
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struct dn_route {
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union {
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struct dst_entry dst;
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struct dn_route *rt_next;
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} u;
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__le16 rt_saddr;
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__le16 rt_daddr;
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__le16 rt_gateway;
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__le16 rt_local_src; /* Source used for forwarding packets */
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__le16 rt_src_map;
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__le16 rt_dst_map;
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unsigned rt_flags;
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unsigned rt_type;
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struct flowi fl;
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};
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extern void dn_route_init(void);
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extern void dn_route_cleanup(void);
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#include <net/sock.h>
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#include <linux/if_arp.h>
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static inline void dn_rt_send(struct sk_buff *skb)
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{
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dev_queue_xmit(skb);
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}
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static inline void dn_rt_finish_output(struct sk_buff *skb, char *dst, char *src)
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{
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struct net_device *dev = skb->dev;
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if ((dev->type != ARPHRD_ETHER) && (dev->type != ARPHRD_LOOPBACK))
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dst = NULL;
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if (!dev->hard_header || (dev->hard_header(skb, dev, ETH_P_DNA_RT,
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dst, src, skb->len) >= 0))
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dn_rt_send(skb);
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else
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kfree_skb(skb);
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}
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#endif /* _NET_DN_ROUTE_H */
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