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2014-11-16ipv4: Fix incorrect error code when adding an unreachable routePanu Matilainen1-0/+4
Trying to add an unreachable route incorrectly returns -ESRCH if if custom FIB rules are present: [root@localhost ~]# ip route add 74.125.31.199 dev eth0 via 1.2.3.4 RTNETLINK answers: Network is unreachable [root@localhost ~]# ip rule add to 55.66.77.88 table 200 [root@localhost ~]# ip route add 74.125.31.199 dev eth0 via 1.2.3.4 RTNETLINK answers: No such process [root@localhost ~]# Commit 83886b6b636173b206f475929e58fac75c6f2446 ("[NET]: Change "not found" return value for rule lookup") changed fib_rules_lookup() to use -ESRCH as a "not found" code internally, but for user space it should be translated into -ENETUNREACH. Handle the translation centrally in ipv4-specific fib_lookup(), leaving the DECnet case alone. On a related note, commit b7a71b51ee37d919e4098cd961d59a883fd272d8 ("ipv4: removed redundant conditional") removed a similar translation from ip_route_input_slow() prematurely AIUI. Fixes: b7a71b51ee37 ("ipv4: removed redundant conditional") Signed-off-by: Panu Matilainen <pmatilai@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-12-10inet: fix NULL pointer Oops in fib(6)_rule_suppressStefan Tomanek1-1/+4
This changes ensures that the routing entry investigated by the suppress function actually does point to a device struct before following that pointer, fixing a possible kernel oops situation when verifying the interface group associated with a routing table entry. According to Daniel Golle, this Oops can be triggered by a user process trying to establish an outgoing IPv6 connection while having no real IPv6 connectivity set up (only autoassigned link-local addresses). Fixes: 6ef94cfafba15 ("fib_rules: add route suppression based on ifgroup") Reported-by: Daniel Golle <daniel.golle@gmail.com> Tested-by: Daniel Golle <daniel.golle@gmail.com> Signed-off-by: Stefan Tomanek <stefan.tomanek@wertarbyte.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-03fib_rules: fix suppressor names and default valuesStefan Tomanek1-1/+1
This change brings the suppressor attribute names into line; it also changes the data types to provide a more consistent interface. While -1 indicates that the suppressor is not enabled, values >= 0 for suppress_prefixlen or suppress_ifgroup reject routing decisions violating the constraint. This changes the previously presented behaviour of suppress_prefixlen, where a prefix length _less_ than the attribute value was rejected. After this change, a prefix length less than *or* equal to the value is considered a violation of the rule constraint. It also changes the default values for default and newly added rules (disabling any suppression for those). Signed-off-by: Stefan Tomanek <stefan.tomanek@wertarbyte.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-02fib_rules: add route suppression based on ifgroupStefan Tomanek1-6/+17
This change adds the ability to suppress a routing decision based upon the interface group the selected interface belongs to. This allows it to exclude specific devices from a routing decision. Signed-off-by: Stefan Tomanek <stefan.tomanek@wertarbyte.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-31fib_rules: add .suppress operationStefan Tomanek1-0/+14
This change adds a new operation to the fib_rules_ops struct; it allows the suppression of routing decisions if certain criteria are not met by its results. The first implemented constraint is a minimum prefix length added to the structures of routing rules. If a rule is added with a minimum prefix length >0, only routes meeting this threshold will be considered. Any other (more general) routing table entries will be ignored. When configuring a system with multiple network uplinks and default routes, it is often convinient to reference the main routing table multiple times - but omitting the default route. Using this patch and a modified "ip" utility, this can be achieved by using the following command sequence: $ ip route add table secuplink default via 10.42.23.1 $ ip rule add pref 100 table main prefixlength 1 $ ip rule add pref 150 fwmark 0xA table secuplink With this setup, packets marked 0xA will be processed by the additional routing table "secuplink", but only if no suitable route in the main routing table can be found. By using a minimal prefixlength of 1, the default route (/0) of the table "main" is hidden to packets processed by rule 100; packets traveling to destinations with more specific routing entries are processed as usual. Signed-off-by: Stefan Tomanek <stefan.tomanek@wertarbyte.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-10-06sections: fix section conflicts in netAndi Kleen1-1/+1
Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: David Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-09-18ipv4/route: arg delay is useless in rt_cache_flush()Nicolas Dichtel1-1/+1
Since route cache deletion (89aef8921bfbac22f), delay is no more used. Remove it. Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-13ipv4: Don't store a rule pointer in fib_result.David S. Miller1-9/+6
We only use it to fetch the rule's tclassid, so just store the tclassid there instead. This also decreases the size of fib_result by a full 8 bytes on 64-bit. On 32-bits it's a wash. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05ipv4: Avoid overhead when no custom FIB rules are installed.David S. Miller1-4/+8
If the user hasn't actually installed any custom rules, or fiddled with the default ones, don't go through the whole FIB rules layer. It's just pure overhead. Instead do what we do with CONFIG_IP_MULTIPLE_TABLES disabled, check the individual tables by hand, one by one. Also, move fib_num_tclassid_users into the ipv4 network namespace. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-29ipv4: Elide fib_validate_source() completely when possible.David S. Miller1-1/+15
If rpfilter is off (or the SKB has an IPSEC path) and there are not tclassid users, we don't have to do anything at all when fib_validate_source() is invoked besides setting the itag to zero. We monitor tclassid uses with a counter (modified only under RTNL and marked __read_mostly) and we protect the fib_validate_source() real work with a test against this counter and whether rpfilter is to be done. Having a way to know whether we need no tclassid processing or not also opens the door for future optimized rpfilter algorithms that do not perform full FIB lookups. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-02ipv4: Stop using NLA_PUT*().David S. Miller1-8/+8
These macros contain a hidden goto, and are thus extremely error prone and make code hard to audit. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-04net: ipv4: export fib_lookup and fib_table_lookupFlorian Westphal1-0/+1
The reverse path filter module will use fib_lookup. If CONFIG_IP_MULTIPLE_TABLES is not set, fib_lookup is only a static inline helper that calls fib_table_lookup, so export that too. 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>
2011-10-31net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modulesPaul Gortmaker1-0/+1
These files are non modular, but need to export symbols using the macros now living in export.h -- call out the include so that things won't break when we remove the implicit presence of module.h from everywhere. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-03-12ipv4: Use flowi4 in FIB layer.David S. Miller1-3/+4
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-12ipv4: Pass ipv4 flow objects into fib_lookup() paths.David S. Miller1-3/+3
To start doing these conversions, we need to add some temporary flow4_* macros which will eventually go away when all the protocol code paths are changed to work on AF specific flowi objects. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-17ipv4: Use const'ify fib_result deep in the route call chains.David S. Miller1-1/+1
The only troublesome bit here is __mkroute_output which wants to override res->fi and res->type, compute those in local variables instead. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-14netfilter: fix Kconfig dependenciesPatrick McHardy1-5/+5
Fix dependencies of netfilter realm match: it depends on NET_CLS_ROUTE, which itself depends on NET_SCHED; this dependency is missing from netfilter. Since matching on realms is also useful without having NET_SCHED enabled and the option really only controls whether the tclassid member is included in route and dst entries, rename the config option to IP_ROUTE_CLASSID and move it outside of traffic scheduling context to get rid of the NET_SCHED dependeny. Reported-by: Vladis Kletnieks <Valdis.Kletnieks@vt.edu> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-10-05fib: RCU conversion of fib_lookup()Eric Dumazet1-1/+2
fib_lookup() converted to be called in RCU protected context, no reference taken and released on a contended cache line (fib_clntref) fib_table_lookup() and fib_semantic_match() get an additional parameter. struct fib_info gets an rcu_head field, and is freed after an rcu grace period. Stress test : (Sending 160.000.000 UDP frames on same neighbour, IP route cache disabled, dual E5540 @2.53GHz, 32bit kernel, FIB_HASH) (about same results for FIB_TRIE) Before patch : real 1m31.199s user 0m13.761s sys 23m24.780s After patch: real 1m5.375s user 0m14.997s sys 15m50.115s Before patch Profile : 13044.00 15.4% __ip_route_output_key vmlinux 8438.00 10.0% dst_destroy vmlinux 5983.00 7.1% fib_semantic_match vmlinux 5410.00 6.4% fib_rules_lookup vmlinux 4803.00 5.7% neigh_lookup vmlinux 4420.00 5.2% _raw_spin_lock vmlinux 3883.00 4.6% rt_set_nexthop vmlinux 3261.00 3.9% _raw_read_lock vmlinux 2794.00 3.3% fib_table_lookup vmlinux 2374.00 2.8% neigh_resolve_output vmlinux 2153.00 2.5% dst_alloc vmlinux 1502.00 1.8% _raw_read_lock_bh vmlinux 1484.00 1.8% kmem_cache_alloc vmlinux 1407.00 1.7% eth_header vmlinux 1406.00 1.7% ipv4_dst_destroy vmlinux 1298.00 1.5% __copy_from_user_ll vmlinux 1174.00 1.4% dev_queue_xmit vmlinux 1000.00 1.2% ip_output vmlinux After patch Profile : 13712.00 15.8% dst_destroy vmlinux 8548.00 9.9% __ip_route_output_key vmlinux 7017.00 8.1% neigh_lookup vmlinux 4554.00 5.3% fib_semantic_match vmlinux 4067.00 4.7% _raw_read_lock vmlinux 3491.00 4.0% dst_alloc vmlinux 3186.00 3.7% neigh_resolve_output vmlinux 3103.00 3.6% fib_table_lookup vmlinux 2098.00 2.4% _raw_read_lock_bh vmlinux 2081.00 2.4% kmem_cache_alloc vmlinux 2013.00 2.3% _raw_spin_lock vmlinux 1763.00 2.0% __copy_from_user_ll vmlinux 1763.00 2.0% ip_output vmlinux 1761.00 2.0% ipv4_dst_destroy vmlinux 1631.00 1.9% eth_header vmlinux 1440.00 1.7% _raw_read_unlock_bh vmlinux Reference results, if IP route cache is enabled : real 0m29.718s user 0m10.845s sys 7m37.341s 25213.00 29.5% __ip_route_output_key vmlinux 9011.00 10.5% dst_release vmlinux 4817.00 5.6% ip_push_pending_frames vmlinux 4232.00 5.0% ip_finish_output vmlinux 3940.00 4.6% udp_sendmsg vmlinux 3730.00 4.4% __copy_from_user_ll vmlinux 3716.00 4.4% ip_route_output_flow vmlinux 2451.00 2.9% __xfrm_lookup vmlinux 2221.00 2.6% ip_append_data vmlinux 1718.00 2.0% _raw_spin_lock_bh vmlinux 1655.00 1.9% __alloc_skb vmlinux 1572.00 1.8% sock_wfree vmlinux 1345.00 1.6% kfree vmlinux Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-05fib: cleanupsEric Dumazet1-5/+5
Code style cleanups before upcoming functional changes. C99 initializer for fib_props array. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-26net: rtnetlink: decouple rtnetlink address families from real address familiesPatrick McHardy1-1/+1
Decouple rtnetlink address families from real address families in socket.h to be able to add rtnetlink interfaces to code that is not a real address family without increasing AF_MAX/NPROTO. This will be used to add support for multicast route dumping from all tables as the proc interface can't be extended to support anything but the main table without breaking compatibility. This partialy undoes the patch to introduce independant families for routing rules and converts ipmr routing rules to a new rtnetlink family. Similar to that patch, values up to 127 are reserved for real address families, values above that may be used arbitrarily. Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-04-26net: fib_rules: mark arguments to fib_rules_register const and __net_initdataPatrick McHardy1-1/+1
fib_rules_register() duplicates the template passed to it without modification, mark the argument as const. Additionally the templates are only needed when instantiating a new namespace, so mark them as __net_initdata, which means they can be discarded when CONFIG_NET_NS=n. Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-04-13net: fib_rules: decouple address families from real address familiesPatrick McHardy1-1/+1
Decouple the address family values used for fib_rules from the real address families in socket.h. This allows to use fib_rules for code that is not a real address family without increasing AF_MAX/NPROTO. Values up to 127 are reserved for real address families and map directly to the corresponding AF value, values starting from 128 are for other uses. rtnetlink is changed to invoke the AF_UNSPEC dumpit/doit handlers for these families. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-13net: fib_rules: set family in fib_rule_hdr centrallyPatrick McHardy1-1/+0
All fib_rules implementations need to set the family in their ->fill() functions. Since the value is available to the generic fib_nl_fill_rule() function, set it there. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-13net: fib_rules: consolidate IPv4 and DECnet ->default_pref() functions.Patrick McHardy1-18/+1
Both functions are equivalent, consolidate them since a following patch needs a third implementation for multicast routing. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03net: Allow fib_rule_unregister to batchEric W. Biederman1-9/+3
Refactor the code so fib_rules_register always takes a template instead of the actual fib_rules_ops structure that will be used. This is required for network namespace support so 2 out of the 3 callers already do this, it allows the error handling to be made common, and it allows fib_rules_unregister to free the template for hte caller. Modify fib_rules_unregister to use call_rcu instead of syncrhonize_rcu to allw multiple namespaces to be cleaned up in the same rcu grace period. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-12-03net 04/05: fib_rules: allow to delete local rulePatrick McHardy1-1/+1
commit d124356ce314fff22a047ea334379d5105b2d834 Author: Patrick McHardy <kaber@trash.net> Date: Thu Dec 3 12:16:35 2009 +0100 net: fib_rules: allow to delete local rule Allow to delete the local rule and recreate it with a higher priority. This can be used to force packets with a local destination out on the wire instead of routing them to loopback. Additionally this patch allows to recreate rules with a priority of 0. Combined with the previous patch to allow oif classification, a socket can be bound to the desired interface and packets routed to the wire like this: # move local rule to lower priority ip rule add pref 1000 lookup local ip rule del pref 0 # route packets of sockets bound to eth0 to the wire independant # of the destination address ip rule add pref 100 oif eth0 lookup 100 ip route add default dev eth0 table 100 Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-05ipv4: fib table algorithm performance improvementStephen Hemminger1-1/+1
The FIB algorithim for IPV4 is set at compile time, but kernel goes through the overhead of function call indirection at runtime. Save some cycles by turning the indirect calls to direct calls to either hash or trie code. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-20net: Remove unused parameter from fill method in fib_rules_ops.Rami Rosen1-1/+1
The netlink message header (struct nlmsghdr) is an unused parameter in fill method of fib_rules_ops struct. This patch removes this parameter from this method and fixes the places where this method is called. (include/net/fib_rules.h) Signed-off-by: Rami Rosen <ramirose@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17ipv4: remove an unused parameter from configure method of fib_rules_ops.Rami Rosen1-1/+1
Signed-off-by: Rami Rosen <ramirose@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-05net: add fib_rules_ops to flush_cache methodDenis V. Lunev1-2/+2
This is required to pass namespace context into rt_cache_flush called from ->flush_cache. Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-05netns: add namespace parameter to rt_cache_flushDenis V. Lunev1-1/+1
Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-26[NET] NETNS: Omit sock->sk_net without CONFIG_NET_NS.YOSHIFUJI Hideaki1-1/+1
Introduce per-sock inlines: sock_net(), sock_net_set() and per-inet_timewait_sock inlines: twsk_net(), twsk_net_set(). Without CONFIG_NET_NS, no namespace other than &init_net exists. Let's explicitly define them to help compiler optimizations. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-01-28[IPV4]: Consolidate fib_select_default.Denis V. Lunev1-10/+0
The difference in the implementation of the fib_select_default when CONFIG_IP_MULTIPLE_TABLES is (not) defined looks negligible. Consolidate it and place into fib_frontend.c. Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28[NETNS]: Add netns parameter to fib_lookup.Denis V. Lunev1-2/+2
Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28[NETNS]: Process FIB rule action in the context of the namespace.Denis V. Lunev1-1/+1
Save namespace context on the fib rule at the rule creation time and call routing lookup in the correct namespace. Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28[NETNS]: FIB rules API cleanup.Denis V. Lunev1-3/+3
Remove struct net from fib_rules_register(unregister)/notify_change paths and diet code size a bit. add/remove: 0/0 grow/shrink: 10/12 up/down: 35/-100 (-65) function old new delta notify_rule_change 273 280 +7 trie_show_stats 471 475 +4 fn_trie_delete 473 477 +4 fib_rules_unregister 144 148 +4 fib4_rule_compare 119 123 +4 resize 2842 2845 +3 fn_trie_select_default 515 518 +3 inet_sk_rebuild_header 836 838 +2 fib_trie_seq_show 764 766 +2 __devinet_sysctl_register 276 278 +2 fn_trie_lookup 1124 1123 -1 ip_fib_check_default 133 131 -2 devinet_conf_sysctl 223 221 -2 snmp_fold_field 126 123 -3 fn_trie_insert 2091 2086 -5 inet_create 876 870 -6 fib4_rules_init 197 191 -6 fib_sync_down 452 444 -8 inet_gso_send_check 334 325 -9 fib_create_info 3003 2991 -12 fib_nl_delrule 568 553 -15 fib_nl_newrule 883 852 -31 Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28[FIB]: Add netns to fib_rules_ops.Denis V. Lunev1-0/+2
The backward link from FIB rules operations to the network namespace will allow to simplify the API a bit. Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28[NETNS]: Namespacing IPv4 fib rules.Denis V. Lunev1-20/+24
The final trick for rules: place fib4_rules_ops into struct net and modify initialization path for this. Acked-by: Benjamin Thery <benjamin.thery@bull.net> Acked-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28[NETNS]: Add netns parameter to fib_get_table/fib_new_table.Denis V. Lunev1-6/+6
This patch extends the fib_get_table and the fib_new_table functions with the network namespace pointer. That will allow to access the table relatively from the network namespace. Acked-by: Benjamin Thery <benjamin.thery@bull.net> Acked-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28[NETNS]: Refactor fib initialization so it can handle multiple namespaces.Denis V. Lunev1-3/+8
This patch makes the fib to be initialized as a subsystem for the network namespaces. The code does not handle several namespaces yet, so in case of a creation of a network namespace, the creation/initialization will not occur. Acked-by: Benjamin Thery <benjamin.thery@bull.net> Acked-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28[IPV4]: Check fib4_rules_init failure.Denis V. Lunev1-2/+12
This adds error paths into both versions of fib4_rules_init (with/without CONFIG_IP_MULTIPLE_TABLES) and returns error code to the caller. Acked-by: Benjamin Thery <benjamin.thery@bull.net> Acked-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28[NETNS]: Pass fib_rules_ops into default_pref method.Denis V. Lunev1-1/+1
fib_rules_ops contains operations and the list of configured rules. ops will become per/namespace soon, so we need them to be known in the default_pref callback. Acked-by: Benjamin Thery <benjamin.thery@bull.net> Acked-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28[NETNS]: Add netns parameter to fib_rules_(un)register.Denis V. Lunev1-1/+1
The patch extends the different fib rules API in order to pass the network namespace pointer. That will allow to access the different tables from a namespace relative object. As usual, the pointer to the init_net variable is passed as parameter so we don't break the network. Acked-by: Benjamin Thery <benjamin.thery@bull.net> Acked-by: Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-11-10[INET]: Small possible memory leak in FIB rulesDenis V. Lunev1-31/+20
This patch fixes a small memory leak. Default fib rules can be deleted by the user if the rule does not carry FIB_RULE_PERMANENT flag, f.e. by ip rule flush Such a rule will not be freed as the ref-counter has 2 on start and becomes clearly unreachable after removal. Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10[IPV4/IPV6/DECNET]: Small cleanup for fib rules.Denis V. Lunev1-9/+7
This patch slightly cleanups FIB rules framework. rules_list as a pointer on struct fib_rules_ops is useless. It is always assigned with a static per/subsystem list in IPv4, IPv6 and DecNet. Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-07[NETLINK]: Mark netlink policies constPatrick McHardy1-1/+1
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25[NET] fib_rules: delay route cache flush by ip_rt_min_delayThomas Graf1-1/+1
Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25[NET] fib_rules: Flush route cache after rule modificationsThomas Graf1-0/+6
The results of FIB rules lookups are cached in the routing cache except for IPv6 as no such cache exists. So far, it was the responsibility of the user to flush the cache after modifying any rules. This lead to many false bug reports due to misunderstanding of this concept. This patch automatically flushes the route cache after inserting or deleting a rule. Thanks to Muli Ben-Yehuda <muli@il.ibm.com> for catching a bug in the previous patch. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25[NET] rules: Unified rules dumpingThomas Graf1-7/+0
Implements a unified, protocol independant rules dumping function which is capable of both, dumping a specific protocol family or all of them. This speeds up dumping as less lookups are required. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25[IPv4]: Use rtnl registration interfaceThomas Graf1-1/+3
Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
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