- 06 4月, 2013 2 次提交
-
-
由 Gao feng 提交于
This patch adds netns support to nf_log and it prepares netns support for existing loggers. It is composed of four major changes. 1) nf_log_register has been split to two functions: nf_log_register and nf_log_set. The new nf_log_register is used to globally register the nf_logger and nf_log_set is used for enabling pernet support from nf_loggers. Per netns is not yet complete after this patch, it comes in separate follow up patches. 2) Add net as a parameter of nf_log_bind_pf. Per netns is not yet complete after this patch, it only allows to bind the nf_logger to the protocol family from init_net and it skips other cases. 3) Adapt all nf_log_packet callers to pass netns as parameter. After this patch, this function only works for init_net. 4) Make the sysctl net/netfilter/nf_log pernet. Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com> Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
-
由 Gao feng 提交于
This patch makes this proc dentry pernet. So far only init_net had a /proc/net/netfilter directory. Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com> Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
-
- 02 4月, 2013 38 次提交
-
-
由 Michal Kubeček 提交于
Signed-off-by: NMichal Kubecek <mkubecek@suse.cz> Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
-
由 holger@eitzenberger.org 提交于
Because rev1 and rev3 of the target share the same hashing generalize it by introduing nfqueue_hash(). Signed-off-by: NHolger Eitzenberger <holger@eitzenberger.org> Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
-
由 holger@eitzenberger.org 提交于
Current NFQUEUE target uses a hash, computed over source and destination address (and other parameters), for steering the packet to the actual NFQUEUE. This, however forgets about the fact that the packet eventually is handled by a particular CPU on user request. If E. g. 1) IRQ affinity is used to handle packets on a particular CPU already (both single-queue or multi-queue case) and/or 2) RPS is used to steer packets to a specific softirq the target easily chooses an NFQUEUE which is not handled by a process pinned to the same CPU. The idea is therefore to use the CPU index for determining the NFQUEUE handling the packet. E. g. when having a system with 4 CPUs, 4 MQ queues and 4 NFQUEUEs it looks like this: +-----+ +-----+ +-----+ +-----+ |NFQ#0| |NFQ#1| |NFQ#2| |NFQ#3| +-----+ +-----+ +-----+ +-----+ ^ ^ ^ ^ | |NFQUEUE | | + + + + +-----+ +-----+ +-----+ +-----+ |rx-0 | |rx-1 | |rx-2 | |rx-3 | +-----+ +-----+ +-----+ +-----+ The NFQUEUEs not necessarily have to start with number 0, setups with less NFQUEUEs than packet-handling CPUs are not a problem as well. This patch extends the NFQUEUE target to accept a new NFQ_FLAG_CPU_FANOUT flag. If this is specified the target uses the CPU index for determining the NFQUEUE being used. I have to introduce rev3 for this. The 'flags' are folded into _v2 'bypass'. By changing the way which queue is assigned, I'm able to improve the performance if the processes reading on the NFQUEUs are pinned correctly. Signed-off-by: NHolger Eitzenberger <holger@eitzenberger.org> Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
-
由 Gao feng 提交于
Signed-off-by: NGao feng <gaofeng@cn.fujitsu.com> Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
-
由 Julian Anastasov 提交于
We used a global BH disable in LOCAL_OUT hook. Add _bh suffix to all places that need it and remove the disabling from LOCAL_OUT and sync code. Functions like ip_defrag need protection from BH, so add it. As for nf_nat_mangle_tcp_packet, it needs RCU lock. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
This is the final step in RCU conversion. Things that are removed: - svc->usecnt: now svc is accessed under RCU read lock - svc->inc: and some unused code - ip_vs_bind_pe and ip_vs_unbind_pe: no ability to replace PE - __ip_vs_svc_lock: replaced with RCU - IP_VS_WAIT_WHILE: now readers lookup svcs and dests under RCU and work in parallel with configuration Other changes: - before now, a RCU read-side critical section included the calling of the schedule method, now it is extended to include service lookup - ip_vs_svc_table and ip_vs_svc_fwm_table are now using hlist - svc->pe and svc->scheduler remain to the end (of grace period), the schedulers are prepared for such RCU readers even after done_service is called but they need to use synchronize_rcu because last ip_vs_scheduler_put can happen while RCU read-side critical sections use an outdated svc->scheduler pointer - as planned, update_service is removed - empty services can be freed immediately after grace period. If dests were present, the services are freed from the dest trash code Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
In previous commits the schedulers started to access svc->destinations with _rcu list traversal primitives because the IP_VS_WAIT_WHILE macro still plays the role of grace period. Now it is time to finish the updating part, i.e. adding and deleting of dests with _rcu suffix before removing the IP_VS_WAIT_WHILE in next commit. We use the same rule for conns as for the schedulers: dests can be searched in RCU read-side critical section where ip_vs_dest_hold can be called by ip_vs_bind_dest. Some things are not perfect, for example, calling functions like ip_vs_lookup_dest from updating code under RCU, just because we use some function both from reader and from updater. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
As all read_locks are gone spin lock is preferred. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
This method releases the scheduler state, it can not fail. Such change will help to properly replace the scheduler in following patch. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
All dests will go to trash, no exceptions. But we have to use new list node t_list for this, due to RCU changes in following patches. Dests will wait there initial grace period and later all conns and schedulers to put their reference. The dests don't get reference for staying in dest trash as before. As result, we do not load ip_vs_dest_put with extra checks for last refcnt and the schedulers do not need to play games with atomic_inc_not_zero while selecting best destination. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
The schedule method now needs _rcu list-traversal primitive for svc->destinations. As the weight for some dest can be reduced during dest selection, change the algorithm to check weights by using minimum weights in the 1 .. max_weight-(di-1) range, with the same step (di). By this way we ensure that there will be always a weight >= 1 check before claiming that all destinations are overloaded. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
The schedule method now needs _rcu list-traversal primitive for svc->destinations. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
Use the 3 new methods to reassign dests. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
The schedule method now needs _rcu list-traversal primitive for svc->destinations. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
The schedule method now needs _rcu list-traversal primitive for svc->destinations. As the previous entry could be unlinked, limit the list traversals to 2 when lookup started from previous entry. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
The schedule method now needs _rcu list-traversal primitive for svc->destinations. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
The schedule method now needs _rcu list-traversal primitive for svc->destinations. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
The schedule method now needs _rcu list-traversal primitive for svc->destinations. The read_lock for sched_lock is removed. The set.lock is removed because now it is used in rare cases, mostly under sched_lock. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
The schedule method now needs _rcu list-traversal primitive for svc->destinations. The read_lock for sched_lock is removed. Use a dead flag to prevent new entries to be created while scheduler is reclaimed. Use hlist for the hash table. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
Use the new add_dest and del_dest methods to reassign dests. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
ip_vs_dest_hold will be used under RCU lock while ip_vs_dest_put can be called even after dest is removed from service, as it happens for conns and some schedulers. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
Allow schedulers to use rcu_dereference when returning destination on lookup. The RCU read-side critical section will allow ip_vs_bind_dest to get dest refcnt as preparation for the step where destinations will be deleted without an IP_VS_WAIT_WHILE guard that holds the packet processing during update. Add new optional scheduler methods add_dest, del_dest and upd_dest. For now the methods are called together with update_service but update_service will be removed in a following change. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
The global list with schedulers ip_vs_schedulers is accessed only from user context - configuration and scheduler module [un]registration. Use ip_vs_sched_mutex instead. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
We have many fields to set and few to reset, use kmem_cache_alloc instead to save some cycles. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off by: Hans Schillstrom <hans@schillstrom.com> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
__ip_vs_conn_in_get and ip_vs_conn_out_get are hot places. Optimize them, so that ports are matched first. By moving net and fwmark below, on 32-bit arch we can fit caddr in 32-byte cache line and all addresses in 64-byte cache line. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off by: Hans Schillstrom <hans@schillstrom.com> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
Convert __ip_vs_conntbl_lock_array as follows: - readers that do not modify conn lists will use RCU lock - updaters that modify lists will use spinlock_t Now for conn lookups we will use RCU read-side critical section. Without using __ip_vs_conn_get such places have access to connection fields and can dereference some pointers like pe and pe_data plus the ability to update timer expiration. If full access is required we contend for reference. We add barrier in __ip_vs_conn_put, so that other CPUs see the refcnt operation after other writes. With the introduction of ip_vs_conn_unlink() we try to reorganize ip_vs_conn_expire(), so that unhashing of connections that should stay more time is avoided, even if it is for very short time. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off by: Hans Schillstrom <hans@schillstrom.com> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
Allow the readers to use RCU lock and for PE module registrations use global mutex instead of spinlock. All PE modules need to use synchronize_rcu in their module exit handler. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off by: Hans Schillstrom <hans@schillstrom.com> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
rs_lock was used to protect rs_table (hash table) from updaters (under global mutex) and readers (packet handlers). We can remove rs_lock by using RCU lock for readers. Reclaiming dest only with kfree_rcu is enough because the readers access only fields from the ip_vs_dest structure. Use hlist for rs_table. As we are now using hlist_del_rcu, introduce in_rs_table flag as replacement for the list_empty checks which do not work with RCU. It is needed because only NAT dests are in the rs_table. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off by: Hans Schillstrom <hans@schillstrom.com> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
We use locks like tcp_app_lock, udp_app_lock, sctp_app_lock to protect access to the protocol hash tables from readers in packet context while the application instances (inc) are [un]registered under global mutex. As the hash tables are mostly read when conns are created and bound to app, use RCU for readers and reclaim app instance after grace period. Simplify ip_vs_app_inc_get because we use usecnt only for statistics and rely on module refcounting. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off by: Hans Schillstrom <hans@schillstrom.com> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
Currently when forwarding requests to real servers we use dst_lock and atomic operations when cloning the dst_cache value. As the dst_cache value does not change most of the time it is better to use RCU and to lock dst_lock only when we need to replace the obsoleted dst. For this to work we keep dst_cache in new structure protected by RCU. For packets to remote real servers we will use noref version of dst_cache, it will be valid while we are in RCU read-side critical section because now dst_release for replaced dsts will be invoked after the grace period. Packets to local real servers that are passed to local stack with NF_ACCEPT need a dst clone. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off by: Hans Schillstrom <hans@schillstrom.com> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
Consolidate the PMTU checks, ICMP sending and skb_dst modification in __ip_vs_get_out_rt and __ip_vs_get_out_rt_v6. Now skb_dst is changed early to simplify the transmitters. Make sure update_pmtu is called only for local clients. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off by: Hans Schillstrom <hans@schillstrom.com> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
We run in contexts like ip_rcv, ipv6_rcv, br_handle_frame, do not expect shared skbs. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off by: Hans Schillstrom <hans@schillstrom.com> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
After commit 70e73416 (ipv4: Show that ip_send_reply() is purely unicast routine.) we do not need to reroute DNAT-ed traffic over loopback because reply uses iph daddr and not rt_spec_dst. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off by: Hans Schillstrom <hans@schillstrom.com> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
Move and give better names to two functions: - ip_vs_dst_reset to __ip_vs_dst_cache_reset - __ip_vs_dev_reset to ip_vs_forget_dev Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off by: Hans Schillstrom <hans@schillstrom.com> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
It was a bad idea to hide return statements in macros. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off by: Hans Schillstrom <hans@schillstrom.com> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
The real server becomes unreachable on down event, no need to wait device unregistration. Should help in releasing dsts early before dst->dev is replaced with lo. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off by: Hans Schillstrom <hans@schillstrom.com> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
Avoid replacing the cached route for real server on every packet with different TOS. I doubt that routing by TOS for real server is used at all, so we should be better with such optimization. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off by: Hans Schillstrom <hans@schillstrom.com> Signed-off-by: NSimon Horman <horms@verge.net.au>
-
由 Julian Anastasov 提交于
Rename skb_dst_set_noref to __skb_dst_set_noref and add force flag as suggested by David Miller. The new wrapper skb_dst_set_noref_force will force dst entries that are not cached to be attached as skb dst without taking reference as long as provided dst is reclaimed after RCU grace period. Signed-off-by: NJulian Anastasov <ja@ssi.bg> Signed-off by: Hans Schillstrom <hans@schillstrom.com> Acked-by: NDavid S. Miller <davem@davemloft.net> Signed-off-by: NSimon Horman <horms@verge.net.au>
-