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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2013-07-27 22:15:01 +0000
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2013-07-27 22:15:01 +0000
commit7996a3d79d55b7f879dfd62e202bbfe2963718d3 (patch)
tree8d9f6759fec4099b9be503c11c7ed174f7204980 /libdde-linux26/contrib/include/net/ip_fib.h
parent4fbe7358c7747a9165f776eb19addbb9baf7def2 (diff)
really properly move files
Diffstat (limited to 'libdde-linux26/contrib/include/net/ip_fib.h')
-rw-r--r--libdde-linux26/contrib/include/net/ip_fib.h279
1 files changed, 279 insertions, 0 deletions
diff --git a/libdde-linux26/contrib/include/net/ip_fib.h b/libdde-linux26/contrib/include/net/ip_fib.h
new file mode 100644
index 00000000..8b12667f
--- /dev/null
+++ b/libdde-linux26/contrib/include/net/ip_fib.h
@@ -0,0 +1,279 @@
+/*
+ * INET An implementation of the TCP/IP protocol suite for the LINUX
+ * operating system. INET is implemented using the BSD Socket
+ * interface as the means of communication with the user level.
+ *
+ * Definitions for the Forwarding Information Base.
+ *
+ * Authors: A.N.Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ *
+ * 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 _NET_IP_FIB_H
+#define _NET_IP_FIB_H
+
+#include <net/flow.h>
+#include <linux/seq_file.h>
+#include <net/fib_rules.h>
+
+struct fib_config {
+ u8 fc_dst_len;
+ u8 fc_tos;
+ u8 fc_protocol;
+ u8 fc_scope;
+ u8 fc_type;
+ /* 3 bytes unused */
+ u32 fc_table;
+ __be32 fc_dst;
+ __be32 fc_gw;
+ int fc_oif;
+ u32 fc_flags;
+ u32 fc_priority;
+ __be32 fc_prefsrc;
+ struct nlattr *fc_mx;
+ struct rtnexthop *fc_mp;
+ int fc_mx_len;
+ int fc_mp_len;
+ u32 fc_flow;
+ u32 fc_nlflags;
+ struct nl_info fc_nlinfo;
+ };
+
+struct fib_info;
+
+struct fib_nh {
+ struct net_device *nh_dev;
+ struct hlist_node nh_hash;
+ struct fib_info *nh_parent;
+ unsigned nh_flags;
+ unsigned char nh_scope;
+#ifdef CONFIG_IP_ROUTE_MULTIPATH
+ int nh_weight;
+ int nh_power;
+#endif
+#ifdef CONFIG_NET_CLS_ROUTE
+ __u32 nh_tclassid;
+#endif
+ int nh_oif;
+ __be32 nh_gw;
+};
+
+/*
+ * This structure contains data shared by many of routes.
+ */
+
+struct fib_info {
+ struct hlist_node fib_hash;
+ struct hlist_node fib_lhash;
+ struct net *fib_net;
+ int fib_treeref;
+ atomic_t fib_clntref;
+ int fib_dead;
+ unsigned fib_flags;
+ int fib_protocol;
+ __be32 fib_prefsrc;
+ u32 fib_priority;
+ u32 fib_metrics[RTAX_MAX];
+#define fib_mtu fib_metrics[RTAX_MTU-1]
+#define fib_window fib_metrics[RTAX_WINDOW-1]
+#define fib_rtt fib_metrics[RTAX_RTT-1]
+#define fib_advmss fib_metrics[RTAX_ADVMSS-1]
+ int fib_nhs;
+#ifdef CONFIG_IP_ROUTE_MULTIPATH
+ int fib_power;
+#endif
+ struct fib_nh fib_nh[0];
+#define fib_dev fib_nh[0].nh_dev
+};
+
+
+#ifdef CONFIG_IP_MULTIPLE_TABLES
+struct fib_rule;
+#endif
+
+struct fib_result {
+ unsigned char prefixlen;
+ unsigned char nh_sel;
+ unsigned char type;
+ unsigned char scope;
+ struct fib_info *fi;
+#ifdef CONFIG_IP_MULTIPLE_TABLES
+ struct fib_rule *r;
+#endif
+};
+
+struct fib_result_nl {
+ __be32 fl_addr; /* To be looked up*/
+ u32 fl_mark;
+ unsigned char fl_tos;
+ unsigned char fl_scope;
+ unsigned char tb_id_in;
+
+ unsigned char tb_id; /* Results */
+ unsigned char prefixlen;
+ unsigned char nh_sel;
+ unsigned char type;
+ unsigned char scope;
+ int err;
+};
+
+#ifdef CONFIG_IP_ROUTE_MULTIPATH
+
+#define FIB_RES_NH(res) ((res).fi->fib_nh[(res).nh_sel])
+#define FIB_RES_RESET(res) ((res).nh_sel = 0)
+
+#define FIB_TABLE_HASHSZ 2
+
+#else /* CONFIG_IP_ROUTE_MULTIPATH */
+
+#define FIB_RES_NH(res) ((res).fi->fib_nh[0])
+#define FIB_RES_RESET(res)
+
+#define FIB_TABLE_HASHSZ 256
+
+#endif /* CONFIG_IP_ROUTE_MULTIPATH */
+
+#define FIB_RES_PREFSRC(res) ((res).fi->fib_prefsrc ? : __fib_res_prefsrc(&res))
+#define FIB_RES_GW(res) (FIB_RES_NH(res).nh_gw)
+#define FIB_RES_DEV(res) (FIB_RES_NH(res).nh_dev)
+#define FIB_RES_OIF(res) (FIB_RES_NH(res).nh_oif)
+
+struct fib_table {
+ struct hlist_node tb_hlist;
+ u32 tb_id;
+ unsigned tb_stamp;
+ int tb_default;
+ int (*tb_lookup)(struct fib_table *tb, const struct flowi *flp, struct fib_result *res);
+ int (*tb_insert)(struct fib_table *, struct fib_config *);
+ int (*tb_delete)(struct fib_table *, struct fib_config *);
+ int (*tb_dump)(struct fib_table *table, struct sk_buff *skb,
+ struct netlink_callback *cb);
+ int (*tb_flush)(struct fib_table *table);
+ void (*tb_select_default)(struct fib_table *table,
+ const struct flowi *flp, struct fib_result *res);
+
+ unsigned char tb_data[0];
+};
+
+#ifndef CONFIG_IP_MULTIPLE_TABLES
+
+#define TABLE_LOCAL_INDEX 0
+#define TABLE_MAIN_INDEX 1
+
+static inline struct fib_table *fib_get_table(struct net *net, u32 id)
+{
+ struct hlist_head *ptr;
+
+ ptr = id == RT_TABLE_LOCAL ?
+ &net->ipv4.fib_table_hash[TABLE_LOCAL_INDEX] :
+ &net->ipv4.fib_table_hash[TABLE_MAIN_INDEX];
+ return hlist_entry(ptr->first, struct fib_table, tb_hlist);
+}
+
+static inline struct fib_table *fib_new_table(struct net *net, u32 id)
+{
+ return fib_get_table(net, id);
+}
+
+static inline int fib_lookup(struct net *net, const struct flowi *flp,
+ struct fib_result *res)
+{
+ struct fib_table *table;
+
+ table = fib_get_table(net, RT_TABLE_LOCAL);
+ if (!table->tb_lookup(table, flp, res))
+ return 0;
+
+ table = fib_get_table(net, RT_TABLE_MAIN);
+ if (!table->tb_lookup(table, flp, res))
+ return 0;
+ return -ENETUNREACH;
+}
+
+#else /* CONFIG_IP_MULTIPLE_TABLES */
+extern int __net_init fib4_rules_init(struct net *net);
+extern void __net_exit fib4_rules_exit(struct net *net);
+
+#ifdef CONFIG_NET_CLS_ROUTE
+extern u32 fib_rules_tclass(struct fib_result *res);
+#endif
+
+extern int fib_lookup(struct net *n, struct flowi *flp, struct fib_result *res);
+
+extern struct fib_table *fib_new_table(struct net *net, u32 id);
+extern struct fib_table *fib_get_table(struct net *net, u32 id);
+
+#endif /* CONFIG_IP_MULTIPLE_TABLES */
+
+/* Exported by fib_frontend.c */
+extern const struct nla_policy rtm_ipv4_policy[];
+extern void ip_fib_init(void);
+extern int fib_validate_source(__be32 src, __be32 dst, u8 tos, int oif,
+ struct net_device *dev, __be32 *spec_dst, u32 *itag);
+extern void fib_select_default(struct net *net, const struct flowi *flp,
+ struct fib_result *res);
+
+/* Exported by fib_semantics.c */
+extern int ip_fib_check_default(__be32 gw, struct net_device *dev);
+extern int fib_sync_down_dev(struct net_device *dev, int force);
+extern int fib_sync_down_addr(struct net *net, __be32 local);
+extern int fib_sync_up(struct net_device *dev);
+extern __be32 __fib_res_prefsrc(struct fib_result *res);
+extern void fib_select_multipath(const struct flowi *flp, struct fib_result *res);
+
+/* Exported by fib_{hash|trie}.c */
+extern void fib_hash_init(void);
+extern struct fib_table *fib_hash_table(u32 id);
+
+static inline void fib_combine_itag(u32 *itag, struct fib_result *res)
+{
+#ifdef CONFIG_NET_CLS_ROUTE
+#ifdef CONFIG_IP_MULTIPLE_TABLES
+ u32 rtag;
+#endif
+ *itag = FIB_RES_NH(*res).nh_tclassid<<16;
+#ifdef CONFIG_IP_MULTIPLE_TABLES
+ rtag = fib_rules_tclass(res);
+ if (*itag == 0)
+ *itag = (rtag<<16);
+ *itag |= (rtag>>16);
+#endif
+#endif
+}
+
+extern void free_fib_info(struct fib_info *fi);
+
+static inline void fib_info_put(struct fib_info *fi)
+{
+ if (atomic_dec_and_test(&fi->fib_clntref))
+ free_fib_info(fi);
+}
+
+static inline void fib_res_put(struct fib_result *res)
+{
+ if (res->fi)
+ fib_info_put(res->fi);
+#ifdef CONFIG_IP_MULTIPLE_TABLES
+ if (res->r)
+ fib_rule_put(res->r);
+#endif
+}
+
+#ifdef CONFIG_PROC_FS
+extern int __net_init fib_proc_init(struct net *net);
+extern void __net_exit fib_proc_exit(struct net *net);
+#else
+static inline int fib_proc_init(struct net *net)
+{
+ return 0;
+}
+static inline void fib_proc_exit(struct net *net)
+{
+}
+#endif
+
+#endif /* _NET_FIB_H */
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