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Diffstat (limited to 'include/net/ip6_route.h')
-rw-r--r--include/net/ip6_route.h155
1 files changed, 80 insertions, 75 deletions
diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h
index 2ad92ca4e6f..1d09b46c1e4 100644
--- a/include/net/ip6_route.h
+++ b/include/net/ip6_route.h
@@ -1,9 +1,6 @@
#ifndef _NET_IP6_ROUTE_H
#define _NET_IP6_ROUTE_H
-#define IP6_RT_PRIO_USER 1024
-#define IP6_RT_PRIO_ADDRCONF 256
-
struct route_info {
__u8 type;
__u8 length;
@@ -26,6 +23,7 @@ struct route_info {
#include <net/sock.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
+#include <linux/route.h>
#define RT6_LOOKUP_F_IFACE 0x00000001
#define RT6_LOOKUP_F_REACHABLE 0x00000002
@@ -34,6 +32,11 @@ struct route_info {
#define RT6_LOOKUP_F_SRCPREF_PUBLIC 0x00000010
#define RT6_LOOKUP_F_SRCPREF_COA 0x00000020
+/* 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))
+
/*
* rt6_srcprefs2flags() and rt6_flags2srcprefs() translate
* between IPV6_ADDR_PREFERENCES socket option values
@@ -53,88 +56,64 @@ static inline unsigned int rt6_flags2srcprefs(int flags)
return (flags >> 3) & 7;
}
-extern void rt6_bind_peer(struct rt6_info *rt,
- int create);
-
-static inline struct inet_peer *rt6_get_peer(struct rt6_info *rt)
+static inline bool rt6_need_strict(const struct in6_addr *daddr)
{
- if (rt->rt6i_peer)
- return rt->rt6i_peer;
-
- rt6_bind_peer(rt, 0);
- return rt->rt6i_peer;
+ return ipv6_addr_type(daddr) &
+ (IPV6_ADDR_MULTICAST | IPV6_ADDR_LINKLOCAL | IPV6_ADDR_LOOPBACK);
}
-extern void ip6_route_input(struct sk_buff *skb);
-
-extern struct dst_entry * ip6_route_output(struct net *net,
- const struct sock *sk,
- struct flowi6 *fl6);
-extern struct dst_entry * ip6_route_lookup(struct net *net,
- struct flowi6 *fl6, int flags);
+void ip6_route_input(struct sk_buff *skb);
-extern int 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(struct net *net,
- unsigned int cmd,
- void __user *arg);
+int ip6_route_init(void);
+void ip6_route_cleanup(void);
-extern int ip6_route_add(struct fib6_config *cfg);
-extern int ip6_ins_rt(struct rt6_info *);
-extern int ip6_del_rt(struct rt6_info *);
+int ipv6_route_ioctl(struct net *net, unsigned int cmd, void __user *arg);
-extern int ip6_route_get_saddr(struct net *net,
- struct rt6_info *rt,
- const struct in6_addr *daddr,
- unsigned int prefs,
- struct in6_addr *saddr);
+int ip6_route_add(struct fib6_config *cfg);
+int ip6_ins_rt(struct rt6_info *);
+int ip6_del_rt(struct rt6_info *);
-extern struct rt6_info *rt6_lookup(struct net *net,
- const struct in6_addr *daddr,
- const struct in6_addr *saddr,
- int oif, int flags);
+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 struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
- struct neighbour *neigh,
- struct flowi6 *fl6);
-extern int icmp6_dst_gc(void);
+struct rt6_info *rt6_lookup(struct net *net, const struct in6_addr *daddr,
+ const struct in6_addr *saddr, int oif, int flags);
-extern void fib6_force_start_gc(struct net *net);
+struct dst_entry *icmp6_dst_alloc(struct net_device *dev, struct flowi6 *fl6);
+int icmp6_dst_gc(void);
-extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
- const struct in6_addr *addr,
- bool anycast);
+void fib6_force_start_gc(struct net *net);
-extern int ip6_dst_hoplimit(struct dst_entry *dst);
+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(const struct in6_addr *addr,
- struct net_device *dev);
-extern struct rt6_info * rt6_add_dflt_router(const struct in6_addr *gwaddr,
- struct net_device *dev,
- unsigned int pref);
-
-extern void rt6_purge_dflt_routers(struct net *net);
-
-extern int rt6_route_rcv(struct net_device *dev,
- u8 *opt, int len,
- const struct in6_addr *gwaddr);
-
-extern void rt6_redirect(const struct in6_addr *dest,
- const struct in6_addr *src,
- const struct in6_addr *saddr,
- struct neighbour *neigh,
- u8 *lladdr,
- int on_link);
-
-extern void rt6_pmtu_discovery(const struct in6_addr *daddr,
- const struct in6_addr *saddr,
- struct net_device *dev,
- u32 pmtu);
+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);
+
+void rt6_purge_dflt_routers(struct net *net);
+
+int rt6_route_rcv(struct net_device *dev, u8 *opt, int len,
+ const struct in6_addr *gwaddr);
+
+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 netlink_callback;
@@ -144,17 +123,19 @@ struct rt6_rtnl_dump_arg {
struct net *net;
};
-extern int rt6_dump_route(struct rt6_info *rt, void *p_arg);
-extern void rt6_ifdown(struct net *net, struct net_device *dev);
-extern void rt6_mtu_change(struct net_device *dev, unsigned mtu);
-extern void rt6_remove_prefsrc(struct inet6_ifaddr *ifp);
+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);
/*
* 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, struct in6_addr *saddr)
+ 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;
@@ -175,21 +156,45 @@ static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst,
spin_unlock(&sk->sk_dst_lock);
}
-static inline int ipv6_unicast_destination(struct sk_buff *skb)
+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;
}
+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) ?
+ 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 2025-11-09 08:20:54 +0000