diff options
author | Ralf Baechle <ralf@linux-mips.org> | 1997-04-29 21:13:14 +0000 |
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committer | <ralf@linux-mips.org> | 1997-04-29 21:13:14 +0000 |
commit | 19c9bba94152148523ba0f7ef7cffe3d45656b11 (patch) | |
tree | 40b1cb534496a7f1ca0f5c314a523c69f1fee464 /include/net/ip6_fib.h | |
parent | 7206675c40394c78a90e74812bbdbf8cf3cca1be (diff) |
Import of Linux/MIPS 2.1.36
Diffstat (limited to 'include/net/ip6_fib.h')
-rw-r--r-- | include/net/ip6_fib.h | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h new file mode 100644 index 000000000..482c7c74a --- /dev/null +++ b/include/net/ip6_fib.h @@ -0,0 +1,153 @@ +/* + * Linux INET6 implementation + * + * Authors: + * Pedro Roque <roque@di.fc.ul.pt> + * + * 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 (at your option) any later version. + */ + +#ifndef _IP6_FIB_H +#define _IP6_FIB_H + +#ifdef __KERNEL__ + +#include <linux/ipv6_route.h> + +#include <net/dst.h> +#include <net/flow.h> + +struct rt6_info; + +struct fib6_node { + struct fib6_node *parent; + struct fib6_node *left; + struct fib6_node *right; + + struct fib6_node *subtree; + + struct rt6_info *leaf; + + __u16 fn_bit; /* bit key */ + __u16 fn_flags; + __u32 fn_sernum; +}; + + +/* + * routing information + * + */ + +struct rt6key { + struct in6_addr addr; + int plen; +}; + +struct rt6_info { + union { + struct dst_entry dst; + struct rt6_info *next; + } u; + +#define rt6i_dev u.dst.dev +#define rt6i_nexthop u.dst.neighbour +#define rt6i_use u.dst.use +#define rt6i_ref u.dst.refcnt + +#define rt6i_tstamp u.dst.lastuse + + struct fib6_node *rt6i_node; + + struct in6_addr rt6i_gateway; + + int rt6i_keylen; + + unsigned long rt6i_flags; + unsigned long rt6i_metric; + unsigned long rt6i_expires; + + union { + struct flow_rule *rt6iu_flowr; + struct flow_filter *rt6iu_filter; + } flow_u; + +#define rt6i_flowr flow_u.rt6iu_flowr +#define rt6i_filter flow_u.rt6iu_filter + + struct rt6key rt6i_dst; + struct rt6key rt6i_src; +}; + + +struct rt6_statistics { + __u32 fib_nodes; + __u32 fib_route_nodes; + __u32 fib_rt_alloc; /* permanet routes */ + __u32 fib_rt_entries; /* rt entries in table */ + __u32 fib_rt_cache; /* cache routes */ +}; + +#define RTN_TL_ROOT 0x0001 +#define RTN_ROOT 0x0002 /* tree root node */ +#define RTN_RTINFO 0x0004 /* node with valid routing info */ + +#define RTN_TAG 0x0100 + +/* + * priority levels (or metrics) + * + */ + +#define RTPRI_FIREWALL 8 /* Firewall control information */ +#define RTPRI_FLOW 16 /* Flow based forwarding rules */ +#define RTPRI_KERN_CTL 32 /* Kernel control routes */ + +#define RTPRI_USER_MIN 256 /* Mimimum user priority */ +#define RTPRI_USER_MAX 1024 /* Maximum user priority */ + +#define RTPRI_KERN_DFLT 4096 /* Kernel default routes */ + +#define MAX_FLOW_BACKTRACE 32 + + +typedef void (*f_pnode)(struct fib6_node *fn, void *); + +extern struct fib6_node ip6_routing_table; + +/* + * exported functions + */ + +extern struct fib6_node *fib6_lookup(struct fib6_node *root, + struct in6_addr *daddr, + struct in6_addr *saddr); + +#define RT6_FILTER_RTNODES 1 + +extern void fib6_walk_tree(struct fib6_node *root, + f_pnode func, void *arg, + int filter); + +extern int fib6_add(struct fib6_node *root, + struct rt6_info *rt); + +extern int fib6_del(struct rt6_info *rt); + +/* + * auxiliary functions + */ +extern __inline__ void rt6_release(struct rt6_info *rt) +{ + struct dst_entry *dst = (struct dst_entry *) rt; + if (atomic_dec_and_test(&dst->refcnt)) + dst_destroy(dst); +} + +extern void rt6_ins(struct rt6_info *rt); + +#endif +#endif |