- 19 1月, 2011 2 次提交
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由 Pablo Neira Ayuso 提交于
This patch adds flow-based timestamping for conntracks. This conntrack extension is disabled by default. Basically, we use two 64-bits variables to store the creation timestamp once the conntrack has been confirmed and the other to store the deletion time. This extension is disabled by default, to enable it, you have to: echo 1 > /proc/sys/net/netfilter/nf_conntrack_timestamp This patch allows to save memory for user-space flow-based loogers such as ulogd2. In short, ulogd2 does not need to keep a hashtable with the conntrack in user-space to know when they were created and destroyed, instead we use the kernel timestamp. If we want to have a sane IPFIX implementation in user-space, this nanosecs resolution timestamps are also useful. Other custom user-space applications can benefit from this via libnetfilter_conntrack. This patch modifies the /proc output to display the delta time in seconds since the flow start. You can also obtain the flow-start date by means of the conntrack-tools. Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: NPatrick McHardy <kaber@trash.net>
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由 Jiri Olsa 提交于
Adding support for SNMP broadcast connection tracking. The SNMP broadcast requests are now paired with the SNMP responses. Thus allowing using SNMP broadcasts with firewall enabled. Please refer to the following conversation: http://marc.info/?l=netfilter-devel&m=125992205006600&w=2 Patrick McHardy wrote: > > The best solution would be to add generic broadcast tracking, the > > use of expectations for this is a bit of abuse. > > The second best choice I guess would be to move the help() function > > to a shared module and generalize it so it can be used for both. This patch implements the "second best choice". Since the netbios-ns conntrack module uses the same helper functionality as the snmp, only one helper function is added for both snmp and netbios-ns modules into the new object - nf_conntrack_broadcast. Signed-off-by: NJiri Olsa <jolsa@redhat.com> Signed-off-by: NPatrick McHardy <kaber@trash.net>
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- 18 1月, 2011 14 次提交
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由 Eric Dumazet 提交于
When a packet is meant to be handled by another node of the cluster, silently drop it instead of flooding kernel log. Note : INVALID packets are also dropped without notice. Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Acked-by: NPablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: NPatrick McHardy <kaber@trash.net>
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由 Florian Westphal 提交于
If an skb is to be NF_QUEUE'd, but no program has opened the queue, the packet is dropped. This adds a v2 target revision of xt_NFQUEUE that allows packets to continue through the ruleset instead. Because the actual queueing happens outside of the target context, the 'bypass' flag has to be communicated back to the netfilter core. Unfortunately the only choice to do this without adding a new function argument is to use the target function return value (i.e. the verdict). In the NF_QUEUE case, the upper 16bit already contain the queue number to use. The previous patch reduced NF_VERDICT_MASK to 0xff, i.e. we now have extra room for a new flag. If a hook issued a NF_QUEUE verdict, then the netfilter core will continue packet processing if the queueing hook returns -ESRCH (== "this queue does not exist") and the new NF_VERDICT_FLAG_QUEUE_BYPASS flag is set in the verdict value. Note: If the queue exists, but userspace does not consume packets fast enough, the skb will still be dropped. Signed-off-by: NFlorian Westphal <fwestphal@astaro.com> Signed-off-by: NPatrick McHardy <kaber@trash.net>
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由 Florian Westphal 提交于
NF_VERDICT_MASK is currently 0xffff. This is because the upper 16 bits are used to store errno (for NF_DROP) or the queue number (NF_QUEUE verdict). As there are up to 0xffff different queues available, there is no more room to store additional flags. At the moment there are only 6 different verdicts, i.e. we can reduce NF_VERDICT_MASK to 0xff to allow storing additional flags in the 0xff00 space. NF_VERDICT_BITS would then be reduced to 8, but because the value is exported to userspace, this might cause breakage; e.g.: e.g. 'queuenr = (1 << NF_VERDICT_BITS) | NF_QUEUE' would now break. Thus, remove NF_VERDICT_BITS usage in the kernel and move the old value to the 'userspace compat' section. Signed-off-by: NFlorian Westphal <fw@strlen.de> Signed-off-by: NPatrick McHardy <kaber@trash.net>
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由 Florian Westphal 提交于
Move free responsibility from nf_queue to caller. This enables more flexible error handling; we can now accept the skb instead of freeing it. Signed-off-by: NFlorian Westphal <fw@strlen.de> Signed-off-by: NPatrick McHardy <kaber@trash.net>
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由 Florian Westphal 提交于
instead of returning -1 on error, return an error number to allow the caller to handle some errors differently. ECANCELED is used to indicate that the hook is going away and should be ignored. A followup patch will introduce more 'ignore this hook' conditions, (depending on queue settings) and will move kfree_skb responsibility to the caller. Signed-off-by: NFlorian Westphal <fw@strlen.de> Signed-off-by: NPatrick McHardy <kaber@trash.net>
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由 Florian Westphal 提交于
NFLOG already does the same thing for NETFILTER_NETLINK_LOG. Signed-off-by: NFlorian Westphal <fw@strlen.de> Signed-off-by: NPatrick McHardy <kaber@trash.net>
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由 Changli Gao 提交于
As this ct won't be seen by the others, we don't need to set the IPS_CONFIRMED_BIT in atomic way. Signed-off-by: NChangli Gao <xiaosuo@gmail.com> Cc: Tim Gardner <tim.gardner@canonical.com> Cc: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NPatrick McHardy <kaber@trash.net>
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由 Changli Gao 提交于
My previous patch (netfilter: nf_nat: don't use atomic bit operation) made a mistake when converting atomic_set to a normal bit 'or'. IPS_*_BIT should be replaced with IPS_*. Signed-off-by: NChangli Gao <xiaosuo@gmail.com> Cc: Tim Gardner <tim.gardner@canonical.com> Cc: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NPatrick McHardy <kaber@trash.net>
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由 Jan Engelhardt 提交于
Signed-off-by: NJan Engelhardt <jengelh@medozas.de>
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由 Jan Engelhardt 提交于
Signed-off-by: NJan Engelhardt <jengelh@medozas.de>
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由 Richard Weinberger 提交于
Signed-off-by: NRichard Weinberger <richard@nod.at> Signed-off-by: NJan Engelhardt <jengelh@medozas.de>
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由 Jan Engelhardt 提交于
When xt_AUDIT is built as a module, modpost reports a problem. MODPOST 322 modules ERROR: "audit_enabled" [net/netfilter/x_tables.ko] undefined! WARNING: modpost: Found 1 section mismatch(es). Cc: Thomas Graf <tgraf@redhat.com> Signed-off-by: NJan Engelhardt <jengelh@medozas.de>
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由 Jan Engelhardt 提交于
Signed-off-by: NJan Engelhardt <jengelh@medozas.de>
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- 17 1月, 2011 2 次提交
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由 Thomas Graf 提交于
The setsockopt() syscall to replace tables is already recorded in the audit logs. This patch stores additional information such as table name and netfilter protocol. Cc: Patrick McHardy <kaber@trash.net> Cc: Eric Paris <eparis@parisplace.org> Cc: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: NThomas Graf <tgraf@redhat.com> Signed-off-by: NPatrick McHardy <kaber@trash.net>
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由 Thomas Graf 提交于
This patch adds a new netfilter target which creates audit records for packets traversing a certain chain. It can be used to record packets which are rejected administraively as follows: -N AUDIT_DROP -A AUDIT_DROP -j AUDIT --type DROP -A AUDIT_DROP -j DROP a rule which would typically drop or reject a packet would then invoke the new chain to record packets before dropping them. -j AUDIT_DROP The module is protocol independant and works for iptables, ip6tables and ebtables. The following information is logged: - netfilter hook - packet length - incomming/outgoing interface - MAC src/dst/proto for ethernet packets - src/dst/protocol address for IPv4/IPv6 - src/dst port for TCP/UDP/UDPLITE - icmp type/code Cc: Patrick McHardy <kaber@trash.net> Cc: Eric Paris <eparis@parisplace.org> Cc: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: NThomas Graf <tgraf@redhat.com> Signed-off-by: NPatrick McHardy <kaber@trash.net>
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- 14 1月, 2011 3 次提交
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由 Patrick McHardy 提交于
Use is_vmalloc_addr() in nf_ct_free_hashtable() and get rid of the vmalloc flags to indicate that a hash table has been allocated using vmalloc(). Signed-off-by: NPatrick McHardy <kaber@trash.net>
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git://1984.lsi.us.es/net-next-2.6由 Patrick McHardy 提交于
Conflicts: net/ipv4/route.c Signed-off-by: NPatrick McHardy <kaber@trash.net>
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由 Patrick McHardy 提交于
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: NVladis Kletnieks <Valdis.Kletnieks@vt.edu> Signed-off-by: NPatrick McHardy <kaber@trash.net>
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- 13 1月, 2011 19 次提交
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由 Florian Westphal 提交于
To avoid adding a new match revision icmp type/code are stored in the sport/dport area. Signed-off-by: NFlorian Westphal <fw@strlen.de> Reviewed-by: NHolger Eitzenberger <holger@eitzenberger.org> Reviewed-by: Bart De Schuymer<bdschuym@pandora.be> Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
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由 Eric Dumazet 提交于
One iptables invocation with 135000 rules takes 35 seconds of cpu time on a recent server, using a 32bit distro and a 64bit kernel. We eventually trigger NMI/RCU watchdog. INFO: rcu_sched_state detected stall on CPU 3 (t=6000 jiffies) COMPAT mode has quadratic behavior and consume 16 bytes of memory per rule. Switch the xt_compat algos to use an array instead of list, and use a binary search to locate an offset in the sorted array. This halves memory need (8 bytes per rule), and removes quadratic behavior [ O(N*N) -> O(N*log2(N)) ] Time of iptables goes from 35 s to 150 ms. Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
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由 Patrick McHardy 提交于
Add a new revision 3 that contains port ranges for all of origsrc, origdst, replsrc and repldst. The high ports are appended to the original v2 data structure to allow sharing most of the code with v1 and v2. Use of the revision specific port matching function is made dependant on par->match->revision. Signed-off-by: NPatrick McHardy <kaber@trash.net> Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
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由 Jan Engelhardt 提交于
Since a string is stored, and not something like a MAC address that would rely on (un)signedness, drop the qualifier. Signed-off-by: NJan Engelhardt <jengelh@medozas.de> Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
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由 Hans Schillstrom 提交于
all init_net removed, (except for some alloc related that needs to be there) Signed-off-by: NHans Schillstrom <hans.schillstrom@ericsson.com> Acked-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
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由 Hans Schillstrom 提交于
init_net removed in __ip_vs_addr_is_local_v6, and got net as param. Signed-off-by: NHans Schillstrom <hans.schillstrom@ericsson.com> Acked-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
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由 Hans Schillstrom 提交于
Last two global vars to be moved, ip_vs_ftpsvc_counter and ip_vs_nullsvc_counter. [horms@verge.net.au: removed whitespace-change-only hunk] Signed-off-by: NHans Schillstrom <hans.schillstrom@ericsson.com> Acked-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
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由 Hans Schillstrom 提交于
trash list per namspace, and reordering of some params in dst struct. [ horms@verge.net.au: Use cancel_delayed_work_sync() instead of cancel_rearming_delayed_work(). Found during merge conflict resoliution ] Signed-off-by: NHans Schillstrom <hans.schillstrom@ericsson.com> Acked-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
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由 Hans Schillstrom 提交于
This patch makes defense work timer per name-space, A net ptr had to be added to the ipvs struct, since it's needed by defense_work_handler. [ horms@verge.net.au: Use cancel_delayed_work_sync() instead of cancel_rearming_delayed_work(). Found during merge conflict resoliution ] Signed-off-by: NHans Schillstrom <hans.schillstrom@ericsson.com> Acked-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
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由 Hans Schillstrom 提交于
Moving global vars to ipvs struct, except for svc table lock. Next patch for ctl will be drop-rate handling. *v3 __ip_vs_mutex remains global ip_vs_conntrack_enabled(struct netns_ipvs *ipvs) Signed-off-by: NHans Schillstrom <hans.schillstrom@ericsson.com> Acked-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
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由 Hans Schillstrom 提交于
Connection hash table is now name space aware. i.e. net ptr >> 8 is xor:ed to the hash, and this is the first param to be compared. The net struct is 0xa40 in size ( a little bit smaller for 32 bit arch:s) and cache-line aligned, so a ptr >> 5 might be a more clever solution ? All lookups where net is compared uses net_eq() which returns 1 when netns is disabled, and the compiler seems to do something clever in that case. ip_vs_conn_fill_param() have *net as first param now. Three new inlines added to keep conn struct smaller when names space is disabled. - ip_vs_conn_net() - ip_vs_conn_net_set() - ip_vs_conn_net_eq() *v3 moved net compare to the end in "fast path" Signed-off-by: NHans Schillstrom <hans.schillstrom@ericsson.com> Acked-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
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由 Hans Schillstrom 提交于
The statistic counter locks for every packet are now removed, and that statistic is now per CPU, i.e. no locks needed. However summing is made in ip_vs_est into ip_vs_stats struct which is moved to ipvs struc. procfs, ip_vs_stats now have a "per cpu" count and a grand total. A new function seq_file_single_net() in ip_vs.h created for handling of single_open_net() since it does not place net ptr in a struct, like others. /var/lib/lxc # cat /proc/net/ip_vs_stats_percpu Total Incoming Outgoing Incoming Outgoing CPU Conns Packets Packets Bytes Bytes 0 0 3 1 9D 34 1 0 1 2 49 70 2 0 1 2 34 76 3 1 2 2 70 74 ~ 1 7 7 18A 18E Conns/s Pkts/s Pkts/s Bytes/s Bytes/s 0 0 0 0 0 *v3 ip_vs_stats reamains as before, instead ip_vs_stats_percpu is added. u64 seq lock added *v4 Bug correction inbytes and outbytes as own vars.. per_cpu counter for all stats now as suggested by Julian. [horms@verge.net.au: removed whitespace-change-only hunk] Signed-off-by: NHans Schillstrom <hans.schillstrom@ericsson.com> Acked-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
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由 Hans Schillstrom 提交于
All global variables moved to struct ipvs, most external changes fixed (i.e. init_net removed) in sync_buf create + 4 replaced by sizeof(struct..) Signed-off-by: NHans Schillstrom <hans.schillstrom@ericsson.com> Acked-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
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由 Hans Schillstrom 提交于
All variables moved to struct ipvs, most external changes fixed (i.e. init_net removed) *v3 timer per ns instead of a common timer in estimator. Signed-off-by: NHans Schillstrom <hans.schillstrom@ericsson.com> Acked-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
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由 Hans Schillstrom 提交于
All variables moved to struct ipvs, most external changes fixed (i.e. init_net removed) in ip_vs_protocol param struct net *net added to: - register_app() - unregister_app() This affected almost all proto_xxx.c files Signed-off-by: NHans Schillstrom <hans.schillstrom@ericsson.com> Acked-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
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由 Hans Schillstrom 提交于
appcnt and timeout_table moved from struct ip_vs_protocol to ip_vs proto_data. struct net *net added as first param to - register_app() - unregister_app() - app_conn_bind() - ip_vs_conn_new() [horms@verge.net.au: removed cosmetic-change-only hunk] Signed-off-by: NHans Schillstrom <hans.schillstrom@ericsson.com> Acked-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
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由 Hans Schillstrom 提交于
ip_vs_protocol *pp is replaced by ip_vs_proto_data *pd in function call in ip_vs_protocol struct i.e. :, - timeout_change() - state_transition() ip_vs_protocol_timeout_change() got ipvs as param, due to above and a upcoming patch - defence work Most of this changes are triggered by Julians comment: "tcp_timeout_change should work with the new struct ip_vs_proto_data so that tcp_state_table will go to pd->state_table and set_tcp_state will get pd instead of pp" *v3 Mostly comments from Julian The pp -> pd conversion should start from functions like ip_vs_out() that use pp = ip_vs_proto_get(iph.protocol), now they should use ip_vs_proto_data_get(net, iph.protocol). conn_in_get() and conn_out_get() unused param *pp, removed. *v4 ip_vs_protocol_timeout_change() walk the proto_data path. Signed-off-by: NHans Schillstrom <hans.schillstrom@ericsson.com> Acked-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
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由 Hans Schillstrom 提交于
In this phase (one), all local vars will be moved to ipvs struct. Remaining work, add param struct net *net to a couple of functions that common for all protos. Signed-off-by: NHans Schillstrom <hans.schillstrom@ericsson.com> Acked-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
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由 Hans Schillstrom 提交于
In this phase (one), all local vars will be moved to ipvs struct. Remaining work, add param struct net *net to a couple of functions that is common for all protos and use ip_vs_proto_data *v3 Removed unuset function set_state_timeout() Signed-off-by: NHans Schillstrom <hans.schillstrom@ericsson.com> Acked-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
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