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linux/include/net/ip6_route.h

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Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
#ifndef _NET_IP6_ROUTE_H
#define _NET_IP6_ROUTE_H
[IPV6]: ROUTE: Add experimental support for Route Information Option in RA (RFC4191). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-21 09:06:24 +08:00
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
[IPV6]: Misc endianness annotations. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-11-15 12:56:00 +08:00
__be32 lifetime;
[IPV6]: ROUTE: Add experimental support for Route Information Option in RA (RFC4191). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-21 09:06:24 +08:00
__u8 prefix[0]; /* 0,8 or 16 */
};
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
#include <net/flow.h>
#include <net/ip6_fib.h>
#include <net/sock.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
ipv6: Introduce rt6_nexthop() to select nexthop address. For RTF_GATEWAY route, return rt->rt6i_gateway. Otherwise, return 2nd argument (destination address). This will be used by following patches which remove rt->n dependency patches in ip6_dst_lookup_tail() and ip6_finish_output2(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-17 20:53:48 +08:00
#include <linux/route.h>
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
[IPV6]: Support Source Address Selection API (RFC5014). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-25 08:37:42 +08:00
#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
[IPV6] ROUTE: Unify RT6_F_xxx and RT6_SELECT_F_xxx flags Unify RT6_F_xxx and RT6_SELECT_F_xxx flags into RT6_LOOKUP_F_xxx flags, and put them into ip6_route.h Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Acked-by: Ville Nuorvala <vnuorval@tcs.hut.fi Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-24 08:25:05 +08:00
ipv6: Optmize translation between IPV6_PREFER_SRC_xxx and RT6_LOOKUP_F_xxx. IPV6_PREFER_SRC_xxx definitions: | #define IPV6_PREFER_SRC_TMP 0x0001 | #define IPV6_PREFER_SRC_PUBLIC 0x0002 | #define IPV6_PREFER_SRC_COA 0x0004 RT6_LOOKUP_F_xxx definitions: | #define RT6_LOOKUP_F_SRCPREF_TMP 0x00000008 | #define RT6_LOOKUP_F_SRCPREF_PUBLIC 0x00000010 | #define RT6_LOOKUP_F_SRCPREF_COA 0x00000020 So, we can translate between these two groups by shift operation instead of multiple 'if's. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-07 08:14:44 +08:00
/*
* 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;
}
static inline unsigned int rt6_flags2srcprefs(int flags)
{
return (flags >> 3) & 7;
}
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
inet: Create and use rt{,6}_get_peer_create(). There's a lot of places that open-code rt{,6}_get_peer() only because they want to set 'create' to one. So add an rt{,6}_get_peer_create() for their sake. There were also a few spots open-coding plain rt{,6}_get_peer() and those are transformed here as well. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-09 14:24:18 +08:00
extern void rt6_bind_peer(struct rt6_info *rt, int create);
ipv6: Add infrastructure to bind inet_peer objects to routes. They are only allowed on cached ipv6 routes. Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-01 04:27:11 +08:00
inet: Create and use rt{,6}_get_peer_create(). There's a lot of places that open-code rt{,6}_get_peer() only because they want to set 'create' to one. So add an rt{,6}_get_peer_create() for their sake. There were also a few spots open-coding plain rt{,6}_get_peer() and those are transformed here as well. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-09 14:24:18 +08:00
static inline struct inet_peer *__rt6_get_peer(struct rt6_info *rt, int create)
ipv6: Add rt6_get_peer() helper. To go along side ipv4's rt_get_peer(). Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-03 02:16:06 +08:00
{
inet: Hide route peer accesses behind helpers. We encode the pointer(s) into an unsigned long with one state bit. The state bit is used so we can store the inetpeer tree root to use when resolving the peer later. Later the peer roots will be per-FIB table, and this change works to facilitate that. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-10 13:36:36 +08:00
if (rt6_has_peer(rt))
return rt6_peer_ptr(rt);
ipv6: Add rt6_get_peer() helper. To go along side ipv4's rt_get_peer(). Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-03 02:16:06 +08:00
inet: Create and use rt{,6}_get_peer_create(). There's a lot of places that open-code rt{,6}_get_peer() only because they want to set 'create' to one. So add an rt{,6}_get_peer_create() for their sake. There were also a few spots open-coding plain rt{,6}_get_peer() and those are transformed here as well. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-09 14:24:18 +08:00
rt6_bind_peer(rt, create);
inet: Fix BUG triggered by __rt{,6}_get_peer(). If no peer actually gets attached (either because create is zero or the peer allocation fails) we'll trigger a BUG because we unconditionally do an rt{,6}_peer_ptr() afterwards. Fix this by guarding it with the proper check. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-12 06:52:29 +08:00
return (rt6_has_peer(rt) ? rt6_peer_ptr(rt) : NULL);
ipv6: Add rt6_get_peer() helper. To go along side ipv4's rt_get_peer(). Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-03 02:16:06 +08:00
}
inet: Create and use rt{,6}_get_peer_create(). There's a lot of places that open-code rt{,6}_get_peer() only because they want to set 'create' to one. So add an rt{,6}_get_peer_create() for their sake. There were also a few spots open-coding plain rt{,6}_get_peer() and those are transformed here as well. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-09 14:24:18 +08:00
static inline struct inet_peer *rt6_get_peer(struct rt6_info *rt)
{
return __rt6_get_peer(rt, 0);
}
static inline struct inet_peer *rt6_get_peer_create(struct rt6_info *rt)
{
return __rt6_get_peer(rt, 1);
}
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
extern void ip6_route_input(struct sk_buff *skb);
[NETNS][IPV6] route6 - add netns parameter to ip6_route_output Add an netns parameter to ip6_route_output. That will allow to access to the right routing table for outgoing traffic. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-06 02:48:10 +08:00
extern struct dst_entry * ip6_route_output(struct net *net,
ipv6: ip6_route_output does not modify sk parameter, so make it const This avoids explicit cast to avoid 'discards qualifiers' compiler warning in a netfilter patch that i've been working on. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-23 10:17:36 +08:00
const struct sock *sk,
ipv6: Convert to use flowi6 where applicable. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-13 05:22:43 +08:00
struct flowi6 *fl6);
ipv6: add ip6_route_lookup like rt6_lookup, but allows caller to pass in flowi6 structure. Will be used by the upcoming ipv6 netfilter reverse path filter match. Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-09-05 22:05:44 +08:00
extern struct dst_entry * ip6_route_lookup(struct net *net,
struct flowi6 *fl6, int flags);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
[IPV6]: Make ip6_route_init to return an error code. The route initialization function does not return any value to notify if the initialization is successful or not. This patch checks all calls made for the initilization in order to return a value for the caller. Unfortunately, proc_net_fops_create will return a NULL pointer if CONFIG_PROC_FS is off, so we can not check the return code without an ifdef CONFIG_PROC_FS block in the ip6_route_init function. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Acked-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-12-07 16:43:48 +08:00
extern int ip6_route_init(void);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
extern void ip6_route_cleanup(void);
[NETNS][IPV6] route6 - make route6 per namespace This patch makes the routing engine use the network namespaces to access routing informations: Add a network namespace parameter to ipv6_route_ioctl and propagate the network namespace value to all the routing code that have not yet been changed. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-05 05:47:47 +08:00
extern int ipv6_route_ioctl(struct net *net,
unsigned int cmd,
void __user *arg);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
[IPv6] route: FIB6 configuration using struct fib6_config Replaces the struct in6_rtmsg based interface orignating from the ioctl interface with a struct fib6_config based on. Allows changing the interface without breaking the ioctl interface and avoids passing on tons of parameters. The recently introduced struct nl_info is used to pass on netlink authorship information for notifications. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-22 15:01:08 +08:00
extern int ip6_route_add(struct fib6_config *cfg);
[IPv6] route: Simplify ip6_ins_rt() Provide a simple ip6_ins_rt() for the majority of users and an alternative for the exception via netlink. Avoids code obfuscation. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-22 15:00:45 +08:00
extern int ip6_ins_rt(struct rt6_info *);
[IPv6] route: Simplify ip6_del_rt() Provide a simple ip6_del_rt() for the majority of users and an alternative for the exception via netlink. Avoids code obfuscation. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-22 15:00:21 +08:00
extern int ip6_del_rt(struct rt6_info *);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
ipv6: RTA_PREFSRC support for ipv6 route source address selection [ipv6] Add support for RTA_PREFSRC This patch allows a user to select the preferred source address for a specific IPv6-Route. It can be set via a netlink message setting RTA_PREFSRC to a valid IPv6 address which must be up on the device the route will be bound to. Signed-off-by: Daniel Walter <dwalter@barracuda.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-14 05:10:57 +08:00
extern int ip6_route_get_saddr(struct net *net,
struct rt6_info *rt,
inet: constify ip headers and in6_addr Add const qualifiers to structs iphdr, ipv6hdr and in6_addr pointers where possible, to make code intention more obvious. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-22 12:53:02 +08:00
const struct in6_addr *daddr,
ipv6: RTA_PREFSRC support for ipv6 route source address selection [ipv6] Add support for RTA_PREFSRC This patch allows a user to select the preferred source address for a specific IPv6-Route. It can be set via a netlink message setting RTA_PREFSRC to a valid IPv6 address which must be up on the device the route will be bound to. Signed-off-by: Daniel Walter <dwalter@barracuda.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-14 05:10:57 +08:00
unsigned int prefs,
struct in6_addr *saddr);
[NETNS][IPV6] route6 - Pass the network namespace parameter to rt6_lookup Add a network namespace parameter to rt6_lookup(). Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-05 05:45:59 +08:00
extern struct rt6_info *rt6_lookup(struct net *net,
[IPV6]: Make address arguments const. - net/ipv6/addrconf.c: ipv6_get_ifaddr(), ipv6_dev_get_saddr() - net/ipv6/mcast.c: ipv6_sock_mc_join(), ipv6_sock_mc_drop(), inet6_mc_check(), ipv6_dev_mc_inc(), __ipv6_dev_mc_dec(), ipv6_dev_mc_dec(), ipv6_chk_mcast_addr() - net/ipv6/route.c: rt6_lookup(), icmp6_dst_alloc() - net/ipv6/ip6_output.c: ip6_nd_hdr() - net/ipv6/ndisc.c: ndisc_send_ns(), ndisc_send_rs(), ndisc_send_redirect(), ndisc_get_neigh(), __ndisc_send() Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-04-10 14:42:10 +08:00
const struct in6_addr *daddr,
const struct in6_addr *saddr,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
int oif, int flags);
[IPV6]: Make ndisc_dst_alloc() common for later use. For later use, this patch is renaming ndisc_dst_alloc() (and related function/structures) to icmp6_dst_alloc() (and so on). This patch also removing unused function- pointer argument for it. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2007-12-07 08:11:48 +08:00
extern struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
ipv6: Move xfrm_lookup() call down into icmp6_dst_alloc(). And return error pointers. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-07 06:04:13 +08:00
struct flowi6 *fl6);
ipv6: icmp6_dst_gc return change Change icmp6_dst_gc to return the one value the caller cares about rather than using call by reference. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-23 05:35:50 +08:00
extern int icmp6_dst_gc(void);
[IPV6]: Make ndisc_dst_alloc() common for later use. For later use, this patch is renaming ndisc_dst_alloc() (and related function/structures) to icmp6_dst_alloc() (and so on). This patch also removing unused function- pointer argument for it. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2007-12-07 08:11:48 +08:00
[NETNS][IPV6] ip6_fib - gc timer per namespace Move the timer initialization at the network namespace creation and store the network namespace in the timer argument. That enables multiple timers (one per network namespace) to do garbage collecting. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-04 15:31:11 +08:00
extern void fib6_force_start_gc(struct net *net);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
const struct in6_addr *addr,
ipv6: Make third arg to anycast_dst_alloc() bool. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-07 05:48:14 +08:00
bool anycast);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* support functions for ND
*
*/
inet: constify ip headers and in6_addr Add const qualifiers to structs iphdr, ipv6hdr and in6_addr pointers where possible, to make code intention more obvious. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-22 12:53:02 +08:00
extern struct rt6_info * rt6_get_dflt_router(const struct in6_addr *addr,
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
struct net_device *dev);
inet: constify ip headers and in6_addr Add const qualifiers to structs iphdr, ipv6hdr and in6_addr pointers where possible, to make code intention more obvious. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-22 12:53:02 +08:00
extern struct rt6_info * rt6_add_dflt_router(const struct in6_addr *gwaddr,
[IPV6]: ROUTE: Add support for Router Preference (RFC4191). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-21 09:04:53 +08:00
struct net_device *dev,
unsigned int pref);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
[NETNS][IPV6] route6 - Pass the network namespace parameter to rt6_purge_dflt_routers Add a network namespace parameter to rt6_purge_dflt_routers. This is needed to call fib6_get_table with the appropriate network namespace. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-05 05:47:14 +08:00
extern void rt6_purge_dflt_routers(struct net *net);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
[IPV6]: ROUTE: Add experimental support for Route Information Option in RA (RFC4191). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-21 09:06:24 +08:00
extern int rt6_route_rcv(struct net_device *dev,
u8 *opt, int len,
inet: constify ip headers and in6_addr Add const qualifiers to structs iphdr, ipv6hdr and in6_addr pointers where possible, to make code intention more obvious. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-22 12:53:02 +08:00
const struct in6_addr *gwaddr);
[IPV6]: ROUTE: Add experimental support for Route Information Option in RA (RFC4191). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-21 09:06:24 +08:00
ipv6: Handle PMTU in ICMP error handlers. One tricky issue on the ipv6 side vs. ipv4 is that the ICMP callouts to handle the error pass the 32-bit info cookie in network byte order whereas ipv4 passes it around in host byte order. Like the ipv4 side, we have two helper functions. One for when we have a socket context and one for when we do not. ip6ip6 tunnels are not handled here, because they handle PMTU events by essentially relaying another ICMP packet-too-big message back to the original sender. This patch allows us to get rid of rt6_do_pmtu_disc(). It handles all kinds of situations that simply cannot happen when we do the PMTU update directly using a fully resolved route. In fact, the "plen == 128" check in ip6_rt_update_pmtu() can very likely be removed or changed into a BUG_ON() check. We should never have a prefixed ipv6 route when we get there. Another piece of strange history here is that TCP and DCCP, unlike in ipv4, never invoke the update_pmtu() method from their ICMP error handlers. This is incredibly astonishing since this is the context where we have the most accurate context in which to make a PMTU update, namely we have a fully connected socket and associated cached socket route. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-16 05:54:11 +08:00
extern void ip6_update_pmtu(struct sk_buff *skb, struct net *net, __be32 mtu,
int oif, u32 mark);
extern void ip6_sk_update_pmtu(struct sk_buff *skb, struct sock *sk,
__be32 mtu);
ipv6: Add ip6_redirect() and ip6_sk_redirect() helper functions. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-12 15:08:07 +08:00
extern void ip6_redirect(struct sk_buff *skb, struct net *net, int oif, u32 mark);
ipv6: handle Redirect ICMP Message with no Redirected Header option rfc 4861 says the Redirected Header option is optional, so the kernel should not drop the Redirect Message that has no Redirected Header option. In this patch, the function ip6_redirect_no_header() is introduced to deal with that condition. Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
2013-08-22 12:07:35 +08:00
extern void ip6_redirect_no_header(struct sk_buff *skb, struct net *net, int oif,
u32 mark);
ipv6: Add ip6_redirect() and ip6_sk_redirect() helper functions. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-12 15:08:07 +08:00
extern void ip6_sk_redirect(struct sk_buff *skb, struct sock *sk);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
struct netlink_callback;
net: cleanup include/net This cleanup patch puts struct/union/enum opening braces, in first line to ease grep games. struct something { becomes : struct something { Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-03 11:26:03 +08:00
struct rt6_rtnl_dump_arg {
[IPV6]: Increase number of possible routing tables to 2^32 Increase number of possible routing tables to 2^32 by replacing iterations over all possible table IDs by hash table walking. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-11 14:11:17 +08:00
struct sk_buff *skb;
struct netlink_callback *cb;
netns: Add network namespace argument to rt6_fill_node() and ipv6_dev_get_saddr() ipv6_dev_get_saddr() blindly de-references dst_dev to get the network namespace, but some callers might pass NULL. Change callers to pass a namespace pointer instead. Signed-off-by: Brian Haley <brian.haley@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-15 06:33:21 +08:00
struct net *net;
[IPV6]: Increase number of possible routing tables to 2^32 Increase number of possible routing tables to 2^32 by replacing iterations over all possible table IDs by hash table walking. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-11 14:11:17 +08:00
};
extern int rt6_dump_route(struct rt6_info *rt, void *p_arg);
[NETNS][IPV6] ip6_fib - fib6_clean_all handle several network namespaces The function fib6_clean_all takes the network namespace as parameter. That allows to flush the routes related to a specific network namespace. Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Benjamin Thery <benjamin.thery@bull.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-04 15:27:06 +08:00
extern void rt6_ifdown(struct net *net, struct net_device *dev);
net: cleanup unsigned to unsigned int Use of "unsigned int" is preferred to bare "unsigned" in net tree. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-15 13:58:06 +08:00
extern void rt6_mtu_change(struct net_device *dev, unsigned int mtu);
ipv6: RTA_PREFSRC support for ipv6 route source address selection [ipv6] Add support for RTA_PREFSRC This patch allows a user to select the preferred source address for a specific IPv6-Route. It can be set via a netlink message setting RTA_PREFSRC to a valid IPv6 address which must be up on the device the route will be bound to. Signed-off-by: Daniel Walter <dwalter@barracuda.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-14 05:10:57 +08:00
extern void rt6_remove_prefsrc(struct inet6_ifaddr *ifp);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* Store a destination cache entry in a socket
*/
[IPV6]: Audit all ip6_dst_lookup/ip6_dst_store calls The current users of ip6_dst_lookup can be divided into two classes: 1) The caller holds no locks and is in user-context (UDP). 2) The caller does not want to lookup the dst cache at all. The second class covers everyone except UDP because most people do the cache lookup directly before calling ip6_dst_lookup. This patch adds ip6_sk_dst_lookup for the first class. Similarly ip6_dst_store users can be divded into those that need to take the socket dst lock and those that don't. This patch adds __ip6_dst_store for those (everyone except UDP/datagram) that don't need an extra lock. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-07-31 11:19:33 +08:00
static inline void __ip6_dst_store(struct sock *sk, struct dst_entry *dst,
ipv6: fix inet6_csk_xmit() We should provide to inet6_csk_route_socket a struct flowi6 pointer, so that net6_csk_xmit() works correctly instead of sending garbage. Also add some consts Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Yuchung Cheng <ycheng@google.com> Cc: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-18 05:38:04 +08:00
const struct in6_addr *daddr,
const struct in6_addr *saddr)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct rt6_info *rt = (struct rt6_info *) dst;
[IPV6]: Added GSO support for TCPv6 This patch adds GSO support for IPv6 and TCPv6. This is based on a patch by Ananda Raju <Ananda.Raju@neterion.com>. His original description is: This patch enables TSO over IPv6. Currently Linux network stacks restricts TSO over IPv6 by clearing of the NETIF_F_TSO bit from "dev->features". This patch will remove this restriction. This patch will introduce a new flag NETIF_F_TSO6 which will be used to check whether device supports TSO over IPv6. If device support TSO over IPv6 then we don't clear of NETIF_F_TSO and which will make the TCP layer to create TSO packets. Any device supporting TSO over IPv6 will set NETIF_F_TSO6 flag in "dev->features" along with NETIF_F_TSO. In case when user disables TSO using ethtool, NETIF_F_TSO will get cleared from "dev->features". So even if we have NETIF_F_TSO6 we don't get TSO packets created by TCP layer. SKB_GSO_TCPV4 renamed to SKB_GSO_TCP to make it generic GSO packet. SKB_GSO_UDPV4 renamed to SKB_GSO_UDP as UFO is not a IPv4 feature. UFO is supported over IPv6 also The following table shows there is significant improvement in throughput with normal frames and CPU usage for both normal and jumbo. -------------------------------------------------- | | 1500 | 9600 | | ------------------|-------------------| | | thru CPU | thru CPU | -------------------------------------------------- | TSO OFF | 2.00 5.5% id | 5.66 20.0% id | -------------------------------------------------- | TSO ON | 2.63 78.0 id | 5.67 39.0% id | -------------------------------------------------- Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-07-01 04:37:03 +08:00
sk_setup_caps(sk, dst);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
np->daddr_cache = daddr;
[IPV6]: Cache source address as well in ipv6_pinfo{}. Based on MIPL2 kernel patch. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Ville Nuorvala <vnuorval@tcs.hut.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-30 08:15:09 +08:00
#ifdef CONFIG_IPV6_SUBTREES
np->saddr_cache = saddr;
#endif
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
np->dst_cookie = rt->rt6i_node ? rt->rt6i_node->fn_sernum : 0;
[IPV6]: Audit all ip6_dst_lookup/ip6_dst_store calls The current users of ip6_dst_lookup can be divided into two classes: 1) The caller holds no locks and is in user-context (UDP). 2) The caller does not want to lookup the dst cache at all. The second class covers everyone except UDP because most people do the cache lookup directly before calling ip6_dst_lookup. This patch adds ip6_sk_dst_lookup for the first class. Similarly ip6_dst_store users can be divded into those that need to take the socket dst lock and those that don't. This patch adds __ip6_dst_store for those (everyone except UDP/datagram) that don't need an extra lock. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-07-31 11:19:33 +08:00
}
static inline void ip6_dst_store(struct sock *sk, struct dst_entry *dst,
[IPV6]: Cache source address as well in ipv6_pinfo{}. Based on MIPL2 kernel patch. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Ville Nuorvala <vnuorval@tcs.hut.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-30 08:15:09 +08:00
struct in6_addr *daddr, struct in6_addr *saddr)
[IPV6]: Audit all ip6_dst_lookup/ip6_dst_store calls The current users of ip6_dst_lookup can be divided into two classes: 1) The caller holds no locks and is in user-context (UDP). 2) The caller does not want to lookup the dst cache at all. The second class covers everyone except UDP because most people do the cache lookup directly before calling ip6_dst_lookup. This patch adds ip6_sk_dst_lookup for the first class. Similarly ip6_dst_store users can be divded into those that need to take the socket dst lock and those that don't. This patch adds __ip6_dst_store for those (everyone except UDP/datagram) that don't need an extra lock. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-07-31 11:19:33 +08:00
{
net: sk_dst_cache RCUification With latest CONFIG_PROVE_RCU stuff, I felt more comfortable to make this work. sk->sk_dst_cache is currently protected by a rwlock (sk_dst_lock) This rwlock is readlocked for a very small amount of time, and dst entries are already freed after RCU grace period. This calls for RCU again :) This patch converts sk_dst_lock to a spinlock, and use RCU for readers. __sk_dst_get() is supposed to be called with rcu_read_lock() or if socket locked by user, so use appropriate rcu_dereference_check() condition (rcu_read_lock_held() || sock_owned_by_user(sk)) This patch avoids two atomic ops per tx packet on UDP connected sockets, for example, and permits sk_dst_lock to be much less dirtied. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-09 07:03:29 +08:00
spin_lock(&sk->sk_dst_lock);
[IPV6]: Cache source address as well in ipv6_pinfo{}. Based on MIPL2 kernel patch. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Ville Nuorvala <vnuorval@tcs.hut.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-30 08:15:09 +08:00
__ip6_dst_store(sk, dst, daddr, saddr);
net: sk_dst_cache RCUification With latest CONFIG_PROVE_RCU stuff, I felt more comfortable to make this work. sk->sk_dst_cache is currently protected by a rwlock (sk_dst_lock) This rwlock is readlocked for a very small amount of time, and dst entries are already freed after RCU grace period. This calls for RCU again :) This patch converts sk_dst_lock to a spinlock, and use RCU for readers. __sk_dst_get() is supposed to be called with rcu_read_lock() or if socket locked by user, so use appropriate rcu_dereference_check() condition (rcu_read_lock_held() || sock_owned_by_user(sk)) This patch avoids two atomic ops per tx packet on UDP connected sockets, for example, and permits sk_dst_lock to be much less dirtied. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-09 07:03:29 +08:00
spin_unlock(&sk->sk_dst_lock);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
}
ipv6: bool/const conversions phase2 Mostly bool conversions, some inline removals and const additions. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-19 02:57:34 +08:00
static inline bool ipv6_unicast_destination(const struct sk_buff *skb)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
{
net: skb->dst accessors Define three accessors to get/set dst attached to a skb struct dst_entry *skb_dst(const struct sk_buff *skb) void skb_dst_set(struct sk_buff *skb, struct dst_entry *dst) void skb_dst_drop(struct sk_buff *skb) This one should replace occurrences of : dst_release(skb->dst) skb->dst = NULL; Delete skb->dst field Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-02 13:19:30 +08:00
struct rt6_info *rt = (struct rt6_info *) skb_dst(skb);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
return rt->rt6i_flags & RTF_LOCAL;
}
ipv6: Fragment locally generated tunnel-mode IPSec6 packets as needed. This patch modifies IPsec6 to fragment IPv6 packets that are locally generated as needed. This version of the patch only fragments in tunnel mode, so that fragment headers will not be obscured by ESP in transport mode. Signed-off-by: David L Stevens <dlstevens@us.ibm.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-12-17 19:42:42 +08:00
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));
}
ipv6: Introduce rt6_nexthop() to select nexthop address. For RTF_GATEWAY route, return rt->rt6i_gateway. Otherwise, return 2nd argument (destination address). This will be used by following patches which remove rt->n dependency patches in ip6_dst_lookup_tail() and ip6_finish_output2(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-17 20:53:48 +08:00
static inline struct in6_addr *rt6_nexthop(struct rt6_info *rt, struct in6_addr *dest)
{
ipv6: always prefer rt6i_gateway if present In v3.9 6fd6ce2056de2709 ("ipv6: Do not depend on rt->n in ip6_finish_output2()." changed the behaviour of ip6_finish_output2() such that the recently introduced rt6_nexthop() is used instead of an assigned neighbor. As rt6_nexthop() prefers rt6i_gateway only for gatewayed routes this causes a problem for users like IPVS, xt_TEE and RAW(hdrincl) if they want to use different address for routing compared to the destination address. Another case is when redirect can create RTF_DYNAMIC route without RTF_GATEWAY flag, we ignore the rt6i_gateway in rt6_nexthop(). Fix the above problems by considering the rt6i_gateway if present, so that traffic routed to address on local subnet is not wrongly diverted to the destination address. Thanks to Simon Horman and Phil Oester for spotting the problematic commit. Thanks to Hannes Frederic Sowa for his review and help in testing. Reported-by: Phil Oester <kernel@linuxace.com> Reported-by: Mark Brooks <mark@loadbalancer.org> Signed-off-by: Julian Anastasov <ja@ssi.bg> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-10-20 20:43:03 +08:00
if (rt->rt6i_flags & RTF_GATEWAY || !ipv6_addr_any(&rt->rt6i_gateway))
ipv6: Introduce rt6_nexthop() to select nexthop address. For RTF_GATEWAY route, return rt->rt6i_gateway. Otherwise, return 2nd argument (destination address). This will be used by following patches which remove rt->n dependency patches in ip6_dst_lookup_tail() and ip6_finish_output2(). Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-17 20:53:48 +08:00
return &rt->rt6i_gateway;
return dest;
}
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
#endif