fd9871f70c
Based on 1 normalized pattern(s): 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 2 of the license or any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 50 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190519154042.917228456@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
116 lines
4 KiB
C
116 lines
4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#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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*******************************************************************************/
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struct sk_buff *dn_alloc_skb(struct sock *sk, int size, gfp_t pri);
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int dn_route_output_sock(struct dst_entry __rcu **pprt, struct flowidn *,
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struct sock *sk, int flags);
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int dn_cache_dump(struct sk_buff *skb, struct netlink_callback *cb);
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void dn_rt_cache_flush(int delay);
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int dn_route_rcv(struct sk_buff *skb, struct net_device *dev,
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struct packet_type *pt, struct net_device *orig_dev);
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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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struct dst_entry dst;
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struct dn_route __rcu *dn_next;
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struct neighbour *n;
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struct flowidn fld;
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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 int rt_flags;
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unsigned int rt_type;
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};
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static inline bool dn_is_input_route(struct dn_route *rt)
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{
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return rt->fld.flowidn_iif != 0;
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}
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static inline bool dn_is_output_route(struct dn_route *rt)
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{
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return rt->fld.flowidn_iif == 0;
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}
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void dn_route_init(void);
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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(skb, dev, ETH_P_DNA_RT, 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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