aboutsummaryrefslogtreecommitdiff
path: root/include/net/ip6_route.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/net/ip6_route.h')
-rw-r--r--include/net/ip6_route.h235
1 files changed, 146 insertions, 89 deletions
diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h
index 1f2e428ca36..1d09b46c1e4 100644
--- a/include/net/ip6_route.h
+++ b/include/net/ip6_route.h
@@ -1,143 +1,200 @@
#ifndef _NET_IP6_ROUTE_H
#define _NET_IP6_ROUTE_H
-#define IP6_RT_PRIO_FW 16
-#define IP6_RT_PRIO_USER 1024
-#define IP6_RT_PRIO_ADDRCONF 256
-#define IP6_RT_PRIO_KERN 512
-#define IP6_RT_FLOW_MASK 0x00ff
-
-#ifdef __KERNEL__
+struct route_info {
+ __u8 type;
+ __u8 length;
+ __u8 prefix_len;
+#if defined(__BIG_ENDIAN_BITFIELD)
+ __u8 reserved_h:3,
+ route_pref:2,
+ reserved_l:3;
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ __u8 reserved_l:3,
+ route_pref:2,
+ reserved_h:3;
+#endif
+ __be32 lifetime;
+ __u8 prefix[0]; /* 0,8 or 16 */
+};
#include <net/flow.h>
#include <net/ip6_fib.h>
#include <net/sock.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
+#include <linux/route.h>
-struct pol_chain {
- int type;
- int priority;
- struct fib6_node *rules;
- struct pol_chain *next;
-};
+#define RT6_LOOKUP_F_IFACE 0x00000001
+#define RT6_LOOKUP_F_REACHABLE 0x00000002
+#define RT6_LOOKUP_F_HAS_SADDR 0x00000004
+#define RT6_LOOKUP_F_SRCPREF_TMP 0x00000008
+#define RT6_LOOKUP_F_SRCPREF_PUBLIC 0x00000010
+#define RT6_LOOKUP_F_SRCPREF_COA 0x00000020
-extern struct rt6_info ip6_null_entry;
+/* We do not (yet ?) support IPv6 jumbograms (RFC 2675)
+ * Unlike IPv4, hdr->seg_len doesn't include the IPv6 header
+ */
+#define IP6_MAX_MTU (0xFFFF + sizeof(struct ipv6hdr))
-extern int ip6_rt_gc_interval;
+/*
+ * rt6_srcprefs2flags() and rt6_flags2srcprefs() translate
+ * between IPV6_ADDR_PREFERENCES socket option values
+ * IPV6_PREFER_SRC_TMP = 0x1
+ * IPV6_PREFER_SRC_PUBLIC = 0x2
+ * IPV6_PREFER_SRC_COA = 0x4
+ * and above RT6_LOOKUP_F_SRCPREF_xxx flags.
+ */
+static inline int rt6_srcprefs2flags(unsigned int srcprefs)
+{
+ /* No need to bitmask because srcprefs have only 3 bits. */
+ return srcprefs << 3;
+}
-extern void ip6_route_input(struct sk_buff *skb);
+static inline unsigned int rt6_flags2srcprefs(int flags)
+{
+ return (flags >> 3) & 7;
+}
-extern struct dst_entry * ip6_route_output(struct sock *sk,
- struct flowi *fl);
+static inline bool rt6_need_strict(const struct in6_addr *daddr)
+{
+ return ipv6_addr_type(daddr) &
+ (IPV6_ADDR_MULTICAST | IPV6_ADDR_LINKLOCAL | IPV6_ADDR_LOOPBACK);
+}
-extern int ip6_route_me_harder(struct sk_buff *skb);
+void ip6_route_input(struct sk_buff *skb);
-extern void ip6_route_init(void);
-extern void ip6_route_cleanup(void);
+struct dst_entry *ip6_route_output(struct net *net, const struct sock *sk,
+ struct flowi6 *fl6);
+struct dst_entry *ip6_route_lookup(struct net *net, struct flowi6 *fl6,
+ int flags);
-extern int ipv6_route_ioctl(unsigned int cmd, void __user *arg);
+int ip6_route_init(void);
+void ip6_route_cleanup(void);
-extern int ip6_route_add(struct in6_rtmsg *rtmsg,
- struct nlmsghdr *,
- void *rtattr,
- struct netlink_skb_parms *req);
-extern int ip6_ins_rt(struct rt6_info *,
- struct nlmsghdr *,
- void *rtattr,
- struct netlink_skb_parms *req);
-extern int ip6_del_rt(struct rt6_info *,
- struct nlmsghdr *,
- void *rtattr,
- struct netlink_skb_parms *req);
+int ipv6_route_ioctl(struct net *net, unsigned int cmd, void __user *arg);
-extern int ip6_rt_addr_add(struct in6_addr *addr,
- struct net_device *dev,
- int anycast);
+int ip6_route_add(struct fib6_config *cfg);
+int ip6_ins_rt(struct rt6_info *);
+int ip6_del_rt(struct rt6_info *);
-extern int ip6_rt_addr_del(struct in6_addr *addr,
- struct net_device *dev);
+int ip6_route_get_saddr(struct net *net, struct rt6_info *rt,
+ const struct in6_addr *daddr, unsigned int prefs,
+ struct in6_addr *saddr);
-extern void rt6_sndmsg(int type, struct in6_addr *dst,
- struct in6_addr *src,
- struct in6_addr *gw,
- struct net_device *dev,
- int dstlen, int srclen,
- int metric, __u32 flags);
+struct rt6_info *rt6_lookup(struct net *net, const struct in6_addr *daddr,
+ const struct in6_addr *saddr, int oif, int flags);
-extern struct rt6_info *rt6_lookup(struct in6_addr *daddr,
- struct in6_addr *saddr,
- int oif, int flags);
+struct dst_entry *icmp6_dst_alloc(struct net_device *dev, struct flowi6 *fl6);
+int icmp6_dst_gc(void);
-extern struct dst_entry *ndisc_dst_alloc(struct net_device *dev,
- struct neighbour *neigh,
- struct in6_addr *addr,
- int (*output)(struct sk_buff *));
-extern int ndisc_dst_gc(int *more);
-extern void fib6_force_start_gc(void);
+void fib6_force_start_gc(struct net *net);
-extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
- const struct in6_addr *addr,
- int anycast);
+struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
+ const struct in6_addr *addr, bool anycast);
/*
* support functions for ND
*
*/
-extern struct rt6_info * rt6_get_dflt_router(struct in6_addr *addr,
- struct net_device *dev);
-extern struct rt6_info * rt6_add_dflt_router(struct in6_addr *gwaddr,
- struct net_device *dev);
-
-extern void rt6_purge_dflt_routers(void);
+struct rt6_info *rt6_get_dflt_router(const struct in6_addr *addr,
+ struct net_device *dev);
+struct rt6_info *rt6_add_dflt_router(const struct in6_addr *gwaddr,
+ struct net_device *dev, unsigned int pref);
-extern void rt6_reset_dflt_pointer(struct rt6_info *rt);
+void rt6_purge_dflt_routers(struct net *net);
-extern void rt6_redirect(struct in6_addr *dest,
- struct in6_addr *saddr,
- struct neighbour *neigh,
- u8 *lladdr,
- int on_link);
+int rt6_route_rcv(struct net_device *dev, u8 *opt, int len,
+ const struct in6_addr *gwaddr);
-extern void rt6_pmtu_discovery(struct in6_addr *daddr,
- struct in6_addr *saddr,
- struct net_device *dev,
- u32 pmtu);
+void ip6_update_pmtu(struct sk_buff *skb, struct net *net, __be32 mtu, int oif,
+ u32 mark);
+void ip6_sk_update_pmtu(struct sk_buff *skb, struct sock *sk, __be32 mtu);
+void ip6_redirect(struct sk_buff *skb, struct net *net, int oif, u32 mark);
+void ip6_redirect_no_header(struct sk_buff *skb, struct net *net, int oif,
+ u32 mark);
+void ip6_sk_redirect(struct sk_buff *skb, struct sock *sk);
-struct nlmsghdr;
struct netlink_callback;
-extern int inet6_dump_fib(struct sk_buff *skb, struct netlink_callback *cb);
-extern int inet6_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
-extern int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
-extern int inet6_rtm_getroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg);
-extern void rt6_ifdown(struct net_device *dev);
-extern void rt6_mtu_change(struct net_device *dev, unsigned mtu);
+struct rt6_rtnl_dump_arg {
+ struct sk_buff *skb;
+ struct netlink_callback *cb;
+ struct net *net;
+};
+
+int rt6_dump_route(struct rt6_info *rt, void *p_arg);
+void rt6_ifdown(struct net *net, struct net_device *dev);
+void rt6_mtu_change(struct net_device *dev, unsigned int mtu);
+void rt6_remove_prefsrc(struct inet6_ifaddr *ifp);
+void rt6_clean_tohost(struct net *net, struct in6_addr *gateway);
-extern rwlock_t rt6_lock;
/*
* Store a destination cache entry in a socket
*/
-static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst,
- struct in6_addr *daddr)
+static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst,
+ const struct in6_addr *daddr,
+ const struct in6_addr *saddr)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct rt6_info *rt = (struct rt6_info *) dst;
- write_lock(&sk->sk_dst_lock);
- __sk_dst_set(sk, dst);
+ sk_setup_caps(sk, dst);
np->daddr_cache = daddr;
+#ifdef CONFIG_IPV6_SUBTREES
+ np->saddr_cache = saddr;
+#endif
np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
- write_unlock(&sk->sk_dst_lock);
}
-static inline int ipv6_unicast_destination(struct sk_buff *skb)
+static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst,
+ struct in6_addr *daddr, struct in6_addr *saddr)
{
- struct rt6_info *rt = (struct rt6_info *) skb->dst;
+ spin_lock(&sk->sk_dst_lock);
+ __ip6_dst_store(sk, dst, daddr, saddr);
+ spin_unlock(&sk->sk_dst_lock);
+}
+
+static inline bool ipv6_unicast_destination(const struct sk_buff *skb)
+{
+ struct rt6_info *rt = (struct rt6_info *) skb_dst(skb);
return rt->rt6i_flags & RTF_LOCAL;
}
-#endif
+static inline bool ipv6_anycast_destination(const struct sk_buff *skb)
+{
+ struct rt6_info *rt = (struct rt6_info *) skb_dst(skb);
+
+ return rt->rt6i_flags & RTF_ANYCAST;
+}
+
+int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *));
+
+static inline int ip6_skb_dst_mtu(struct sk_buff *skb)
+{
+ struct ipv6_pinfo *np = skb->sk ? inet6_sk(skb->sk) : NULL;
+
+ return (np && np->pmtudisc >= IPV6_PMTUDISC_PROBE) ?
+ skb_dst(skb)->dev->mtu : dst_mtu(skb_dst(skb));
+}
+
+static inline bool ip6_sk_accept_pmtu(const struct sock *sk)
+{
+ return inet6_sk(sk)->pmtudisc != IPV6_PMTUDISC_INTERFACE &&
+ inet6_sk(sk)->pmtudisc != IPV6_PMTUDISC_OMIT;
+}
+
+static inline bool ip6_sk_ignore_df(const struct sock *sk)
+{
+ return inet6_sk(sk)->pmtudisc < IPV6_PMTUDISC_DO ||
+ inet6_sk(sk)->pmtudisc == IPV6_PMTUDISC_OMIT;
+}
+
+static inline struct in6_addr *rt6_nexthop(struct rt6_info *rt)
+{
+ return &rt->rt6i_gateway;
+}
+
#endif
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-06 05:18:30 +0000