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115 lines
4.0 KiB
115 lines
4.0 KiB
/* 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 [email protected] |
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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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