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2014-11-05netfilter: Remove checks of seq_printf() return valuesSteven Rostedt (Red Hat)1-19/+17
The return value of seq_printf() is soon to be removed. Remove the checks from seq_printf() in favor of seq_has_overflowed(). Link: http://lkml.kernel.org/r/20141104142236.GA10239@salvia Acked-by: Pablo Neira Ayuso <pablo@netfilter.org> Cc: Patrick McHardy <kaber@trash.net> Cc: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Cc: netfilter-devel@vger.kernel.org Cc: coreteam@netfilter.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2014-09-10netfilter: Convert pr_warning to pr_warnJoe Perches1-1/+1
Use the more common pr_warn. Other miscellanea: o Coalesce formats o Realign arguments Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-23net: use reciprocal_scale() helperDaniel Borkmann1-1/+1
Replace open codings of (((u64) <x> * <y>) >> 32) with reciprocal_scale(). Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Cc: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-24netfilter: xt_hashlimit: perform garbage collection from process contextEric Dumazet1-15/+16
xt_hashlimit cannot be used with large hash tables, because garbage collector is run from a timer. If table is really big, its possible to hold cpu for more than 500 msec, which is unacceptable. Switch to a work queue, and use proper scheduling points to remove latencies spikes. Later, we also could switch to a smoother garbage collection done at lookup time, one bucket at a time... Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Florian Westphal <fw@strlen.de> Cc: Patrick McHardy <kaber@trash.net> Reviewed-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-12-07netfilter: xt_hashlimit: fix proc entry leak in netns destroy pathSergey Popovich1-14/+11
In (32263dd1b netfilter: xt_hashlimit: fix namespace destroy path) the hashlimit_net_exit() function is always called right before hashlimit_mt_destroy() to release netns data. If you use xt_hashlimit with IPv4 and IPv6 together, this produces the following splat via netconsole in the netns destroy path: Pid: 9499, comm: kworker/u:0 Tainted: G WC O 3.2.0-5-netctl-amd64-core2 Call Trace: [<ffffffff8104708d>] ? warn_slowpath_common+0x78/0x8c [<ffffffff81047139>] ? warn_slowpath_fmt+0x45/0x4a [<ffffffff81144a99>] ? remove_proc_entry+0xd8/0x22e [<ffffffff810ebbaa>] ? kfree+0x5b/0x6c [<ffffffffa043c501>] ? hashlimit_net_exit+0x45/0x8d [xt_hashlimit] [<ffffffff8128ab30>] ? ops_exit_list+0x1c/0x44 [<ffffffff8128b28e>] ? cleanup_net+0xf1/0x180 [<ffffffff810369fc>] ? should_resched+0x5/0x23 [<ffffffff8105b8f9>] ? process_one_work+0x161/0x269 [<ffffffff8105aea5>] ? cwq_activate_delayed_work+0x3c/0x48 [<ffffffff8105c8c2>] ? worker_thread+0xc2/0x145 [<ffffffff8105c800>] ? manage_workers.isra.25+0x15b/0x15b [<ffffffff8105fa01>] ? kthread+0x76/0x7e [<ffffffff813581f4>] ? kernel_thread_helper+0x4/0x10 [<ffffffff8105f98b>] ? kthread_worker_fn+0x139/0x139 [<ffffffff813581f0>] ? gs_change+0x13/0x13 ---[ end trace d8c3cc0ad163ef79 ]--- ------------[ cut here ]------------ WARNING: at /usr/src/linux-3.2.52/debian/build/source_netctl/fs/proc/generic.c:849 remove_proc_entry+0x217/0x22e() Hardware name: remove_proc_entry: removing non-empty directory 'net/ip6t_hashlimit', leaking at least 'IN-REJECT' This is due to lack of removal net/ip6t_hashlimit/* entries in hashlimit_proc_net_exit(), since only IPv4 entries are deleted. Fix it by always removing the IPv4 and IPv6 entries and their parent directories in the netns destroy path. Signed-off-by: Sergey Popovich <popovich_sergei@mail.ru> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-05-01Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds1-4/+12
Pull VFS updates from Al Viro, Misc cleanups all over the place, mainly wrt /proc interfaces (switch create_proc_entry to proc_create(), get rid of the deprecated create_proc_read_entry() in favor of using proc_create_data() and seq_file etc). 7kloc removed. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (204 commits) don't bother with deferred freeing of fdtables proc: Move non-public stuff from linux/proc_fs.h to fs/proc/internal.h proc: Make the PROC_I() and PDE() macros internal to procfs proc: Supply a function to remove a proc entry by PDE take cgroup_open() and cpuset_open() to fs/proc/base.c ppc: Clean up scanlog ppc: Clean up rtas_flash driver somewhat hostap: proc: Use remove_proc_subtree() drm: proc: Use remove_proc_subtree() drm: proc: Use minor->index to label things, not PDE->name drm: Constify drm_proc_list[] zoran: Don't print proc_dir_entry data in debug reiserfs: Don't access the proc_dir_entry in r_open(), r_start() r_show() proc: Supply an accessor for getting the data from a PDE's parent airo: Use remove_proc_subtree() rtl8192u: Don't need to save device proc dir PDE rtl8187se: Use a dir under /proc/net/r8180/ proc: Add proc_mkdir_data() proc: Move some bits from linux/proc_fs.h to linux/{of.h,signal.h,tty.h} proc: Move PDE_NET() to fs/proc/proc_net.c ...
2013-04-29xt_hashlimit: allocate a copy of name explicitly, don't rely on procfs gutsAl Viro1-3/+11
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-04-18netfilter: add my copyright statementsPatrick McHardy1-0/+1
Add copyright statements to all netfilter files which have had significant changes done by myself in the past. Some notes: - nf_conntrack_ecache.c was incorrectly attributed to Rusty and Netfilter Core Team when it got split out of nf_conntrack_core.c. The copyrights even state a date which lies six years before it was written. It was written in 2005 by Harald and myself. - net/ipv{4,6}/netfilter.c, net/netfitler/nf_queue.c were missing copyright statements. I've added the copyright statement from net/netfilter/core.c, where this code originated - for nf_conntrack_proto_tcp.c I've also added Jozsef, since I didn't want it to give the wrong impression Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-04-09procfs: new helper - PDE_DATA(inode)Al Viro1-1/+1
The only part of proc_dir_entry the code outside of fs/proc really cares about is PDE(inode)->data. Provide a helper for that; static inline for now, eventually will be moved to fs/proc, along with the knowledge of struct proc_dir_entry layout. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-27hlist: drop the node parameter from iteratorsSasha Levin1-10/+6
I'm not sure why, but the hlist for each entry iterators were conceived list_for_each_entry(pos, head, member) The hlist ones were greedy and wanted an extra parameter: hlist_for_each_entry(tpos, pos, head, member) Why did they need an extra pos parameter? I'm not quite sure. Not only they don't really need it, it also prevents the iterator from looking exactly like the list iterator, which is unfortunate. Besides the semantic patch, there was some manual work required: - Fix up the actual hlist iterators in linux/list.h - Fix up the declaration of other iterators based on the hlist ones. - A very small amount of places were using the 'node' parameter, this was modified to use 'obj->member' instead. - Coccinelle didn't handle the hlist_for_each_entry_safe iterator properly, so those had to be fixed up manually. The semantic patch which is mostly the work of Peter Senna Tschudin is here: @@ iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host; type T; expression a,c,d,e; identifier b; statement S; @@ -T b; <+... when != b ( hlist_for_each_entry(a, - b, c, d) S | hlist_for_each_entry_continue(a, - b, c) S | hlist_for_each_entry_from(a, - b, c) S | hlist_for_each_entry_rcu(a, - b, c, d) S | hlist_for_each_entry_rcu_bh(a, - b, c, d) S | hlist_for_each_entry_continue_rcu_bh(a, - b, c) S | for_each_busy_worker(a, c, - b, d) S | ax25_uid_for_each(a, - b, c) S | ax25_for_each(a, - b, c) S | inet_bind_bucket_for_each(a, - b, c) S | sctp_for_each_hentry(a, - b, c) S | sk_for_each(a, - b, c) S | sk_for_each_rcu(a, - b, c) S | sk_for_each_from -(a, b) +(a) S + sk_for_each_from(a) S | sk_for_each_safe(a, - b, c, d) S | sk_for_each_bound(a, - b, c) S | hlist_for_each_entry_safe(a, - b, c, d, e) S | hlist_for_each_entry_continue_rcu(a, - b, c) S | nr_neigh_for_each(a, - b, c) S | nr_neigh_for_each_safe(a, - b, c, d) S | nr_node_for_each(a, - b, c) S | nr_node_for_each_safe(a, - b, c, d) S | - for_each_gfn_sp(a, c, d, b) S + for_each_gfn_sp(a, c, d) S | - for_each_gfn_indirect_valid_sp(a, c, d, b) S + for_each_gfn_indirect_valid_sp(a, c, d) S | for_each_host(a, - b, c) S | for_each_host_safe(a, - b, c, d) S | for_each_mesh_entry(a, - b, c, d) S ) ...+> [akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c] [akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c] [akpm@linux-foundation.org: checkpatch fixes] [akpm@linux-foundation.org: fix warnings] [akpm@linux-foudnation.org: redo intrusive kvm changes] Tested-by: Peter Senna Tschudin <peter.senna@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Gleb Natapov <gleb@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-18net: proc: change proc_net_remove to remove_proc_entryGao feng1-3/+3
proc_net_remove is only used to remove proc entries that under /proc/net,it's not a general function for removing proc entries of netns. if we want to remove some proc entries which under /proc/net/stat/, we still need to call remove_proc_entry. this patch use remove_proc_entry to replace proc_net_remove. we can remove proc_net_remove after this patch. Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-12-26netfilter: xt_hashlimit: fix namespace destroy pathVitaly E. Lavrov1-4/+25
recent_net_exit() is called before recent_mt_destroy() in the destroy path of network namespaces. Make sure there are no entries in the parent proc entry xt_recent before removing it. Signed-off-by: Vitaly E. Lavrov <lve@guap.ru> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-12-26netfilter: xt_hashlimit: fix race that results in duplicated entriesPablo Neira Ayuso1-4/+21
Two packets may race to create the same entry in the hashtable, double check if this packet lost race. This double checking only happens in the path of the packet that creates the hashtable for first time. Note that, with this patch, no packet drops occur if the race happens. Reported-by: Feng Gao <gfree.wind@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-05-17netfilter: xt_hashlimit: use _ALL macro to reject unknown flag bitsFlorian Westphal1-1/+1
David Miller says: The canonical way to validate if the set bits are in a valid range is to have a "_ALL" macro, and test: if (val & ~XT_HASHLIMIT_ALL) goto err;" make it so. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-05-15net: Convert net_ratelimit uses to net_<level>_ratelimitedJoe Perches1-2/+1
Standardize the net core ratelimited logging functions. Coalesce formats, align arguments. Change a printk then vprintk sequence to use printf extension %pV. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-09netfilter: hashlimit: byte-based limit modeFlorian Westphal1-19/+97
can be used e.g. for ingress traffic policing or to detect when a host/port consumes more bandwidth than expected. This is done by optionally making cost to mean "cost per 16-byte-chunk-of-data" instead of "cost per packet". Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-05-09netfilter: hashlimit: move rateinfo initialization to helperFlorian Westphal1-5/+10
followup patch would bloat main match function too much. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-05-09netfilter: limit, hashlimit: avoid duplicated inlineFlorian Westphal1-5/+3
credit_cap can be set to credit, which avoids inlining user2credits twice. Also, remove inline keyword and let compiler decide. old: 684 192 0 876 36c net/netfilter/xt_limit.o 4927 344 32 5303 14b7 net/netfilter/xt_hashlimit.o now: 668 192 0 860 35c net/netfilter/xt_limit.o 4793 344 32 5169 1431 net/netfilter/xt_hashlimit.o Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-01-16netfilter: xt_hashlimit: fix unused variable warning if IPv6 disabledStephen Rothwell1-1/+4
Fixes this warning when CONFIG_IP6_NF_IPTABLES is not enabled: net/netfilter/xt_hashlimit.c: In function ‘hashlimit_init_dst’: net/netfilter/xt_hashlimit.c:448:9: warning: unused variable ‘frag_off’ [-Wunused-variable] Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2011-12-16net:netfilter: use IS_ENABLEDIgor Maravić1-8/+8
Use IS_ENABLED(CONFIG_FOO) instead of defined(CONFIG_FOO) || defined (CONFIG_FOO_MODULE) Signed-off-by: Igor Maravić <igorm@etf.rs> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-03ipv6: Add fragment reporting to ipv6_skip_exthdr().Jesse Gross1-1/+2
While parsing through IPv6 extension headers, fragment headers are skipped making them invisible to the caller. This reports the fragment offset of the last header in order to make it possible to determine whether the packet is fragmented and, if so whether it is a first or last fragment. Signed-off-by: Jesse Gross <jesse@nicira.com>
2011-11-01netfilter: Remove unnecessary OOM logging messagesJoe Perches1-4/+1
Site specific OOM messages are duplications of a generic MM out of memory message and aren't really useful, so just delete them. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-08-19netfilter: xt_hashlimit: use proto_ports_offset() to support AH messageChangli Gao1-10/+5
Signed-off-by: Changli Gao <xiaosuo@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-11netfilter: xtables: change hotdrop pointer to direct modificationJan Engelhardt1-1/+1
Since xt_action_param is writable, let's use it. The pointer to 'bool hotdrop' always worried (8 bytes (64-bit) to write 1 byte!). Surprisingly results in a reduction in size: text data bss filename 5457066 692730 357892 vmlinux.o-prev 5456554 692730 357892 vmlinux.o Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-05-11netfilter: xtables: deconstify struct xt_action_param for matchesJan Engelhardt1-1/+1
In future, layer-3 matches will be an xt module of their own, and need to set the fragoff and thoff fields. Adding more pointers would needlessy increase memory requirements (esp. so for 64-bit, where pointers are wider). Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-05-11netfilter: xtables: substitute temporary defines by final nameJan Engelhardt1-1/+1
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-04-20Merge branch 'master' of /repos/git/net-next-2.6Patrick McHardy1-1/+3
Conflicts: Documentation/feature-removal-schedule.txt net/ipv6/netfilter/ip6t_REJECT.c net/netfilter/xt_limit.c Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-04-01netfilter: xt_hashlimit: RCU conversionEric Dumazet1-23/+47
xt_hashlimit uses a central lock per hash table and suffers from contention on some workloads. (Multiqueue NIC or if RPS is enabled) After RCU conversion, central lock is only used when a writer wants to add or delete an entry. For 'readers', updating an existing entry, they use an individual lock per entry. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-03-25netfilter: xt_hashlimit: IPV6 bugfixEric Dumazet1-0/+1
A missing break statement in hashlimit_ipv6_mask(), and masks between /64 and /95 are not working at all... Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-03-25netfilter: xtables: remove xt_hashlimit revision 0Jan Engelhardt1-221/+0
Superseded by xt_hashlimit revision 1 (linux v2.6.24-6212-g09e410d, iptables 1.4.1-rc1). Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-03-25netfilter: xtables: slightly better error reportingJan Engelhardt1-12/+20
When extended status codes are available, such as ENOMEM on failed allocations, or subsequent functions (e.g. nf_ct_get_l3proto), passing them up to userspace seems like a good idea compared to just always EINVAL. Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-03-25netfilter: xtables: change matches to return error codeJan Engelhardt1-15/+14
The following semantic patch does part of the transformation: // <smpl> @ rule1 @ struct xt_match ops; identifier check; @@ ops.checkentry = check; @@ identifier rule1.check; @@ check(...) { <... -return true; +return 0; ...> } @@ identifier rule1.check; @@ check(...) { <... -return false; +return -EINVAL; ...> } // </smpl> Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-03-25netfilter: xtables: change xt_match.checkentry return typeJan Engelhardt1-2/+2
Restore function signatures from bool to int so that we can report memory allocation failures or similar using -ENOMEM rather than always having to pass -EINVAL back. This semantic patch may not be too precise (checking for functions that use xt_mtchk_param rather than functions referenced by xt_match.checkentry), but reviewed, it produced the intended result. // <smpl> @@ type bool; identifier check, par; @@ -bool check +int check (struct xt_mtchk_param *par) { ... } // </smpl> Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-03-25netfilter: xt_hashlimit: dl_seq_stop() fixEric Dumazet1-1/+2
If dl_seq_start() memory allocation fails, we crash later in dl_seq_stop(), trying to kfree(ERR_PTR(-ENOMEM)) Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-03-18netfilter: xt extensions: use pr_<level>Jan Engelhardt1-10/+8
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-03-18netfilter: xtables: do not print any messages on ENOMEMJan Engelhardt1-6/+2
ENOMEM is a very obvious error code (cf. EINVAL), so I think we do not really need a warning message. Not to mention that if the allocation fails, the user is most likely going to get a stack trace from slab already. Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-03-18netfilter: xtables: make use of caller family rather than match familyJan Engelhardt1-5/+5
The matches can have .family = NFPROTO_UNSPEC, and though that is not the case for the touched modules, it seems better to just use the nfproto from the caller. Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-03-17netfilter: update my email addressJan Engelhardt1-1/+1
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-03-08Merge branch 'for-next' into for-linusJiri Kosina1-1/+1
Conflicts: Documentation/filesystems/proc.txt arch/arm/mach-u300/include/mach/debug-macro.S drivers/net/qlge/qlge_ethtool.c drivers/net/qlge/qlge_main.c drivers/net/typhoon.c
2010-02-17xt_hashlimit: fix lockingEric Dumazet1-4/+0
Commit 2eff25c18c3d332d3c4dd98f2ac9b7114e9771b0 (netfilter: xt_hashlimit: fix race condition and simplify locking) added a mutex deadlock : htable_create() is called with hashlimit_mutex already locked Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-15netfilter: xtables: constify args in compat copying functionsJan Engelhardt1-2/+2
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-02-09tree-wide: Assorted spelling fixesDaniel Mack1-1/+1
In particular, several occurances of funny versions of 'success', 'unknown', 'therefore', 'acknowledge', 'argument', 'achieve', 'address', 'beginning', 'desirable', 'separate' and 'necessary' are fixed. Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Joe Perches <joe@perches.com> Cc: Junio C Hamano <gitster@pobox.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-02-03netfilter: xt_hashlimit: fix race condition and simplify lockingPatrick McHardy1-34/+18
As noticed by Shin Hong <hongshin@gmail.com>, there is a race between htable_find_get() and htable_put(): htable_put(): htable_find_get(): spin_lock_bh(&hashlimit_lock); <search entry> atomic_dec_and_test(&hinfo->use) atomic_inc(&hinfo->use) spin_unlock_bh(&hashlimit_lock) return hinfo; spin_lock_bh(&hashlimit_lock); hlist_del(&hinfo->node); spin_unlock_bh(&hashlimit_lock); htable_destroy(hinfo); The entire locking concept is overly complicated, tables are only created/referenced and released in process context, so a single mutex works just fine. Remove the hashinfo_spinlock and atomic reference count and use the mutex to protect table lookups/creation and reference count changes. Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-01-18netfilter: xt_hashlimit: netns supportAlexey Dobriyan1-43/+98
Make hashtable per-netns. Make proc files per-netns. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-01-18netfilter: xt_hashlimit: simplify seqfile codeAlexey Dobriyan1-9/+5
Simply pass hashtable to seqfile iterators, proc entry itself is not needed. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-01-04netfilter: xt_recent: save 8 bytes per htableJan Engelhardt1-4/+4
Moving rnd_inited into the hole after the uint8 lets go of the uint32 rnd_inited was using, plus the padding that would follow the int group. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-09-22mm: replace various uses of num_physpages by totalram_pagesJan Beulich1-4/+4
Sizing of memory allocations shouldn't depend on the number of physical pages found in a system, as that generally includes (perhaps a huge amount of) non-RAM pages. The amount of what actually is usable as storage should instead be used as a basis here. Some of the calculations (i.e. those not intending to use high memory) should likely even use (totalram_pages - totalhigh_pages). Signed-off-by: Jan Beulich <jbeulich@novell.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Dave Airlie <airlied@linux.ie> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk> Cc: "David S. Miller" <davem@davemloft.net> Cc: Patrick McHardy <kaber@trash.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-05-27netfilter: xt_hashlimit does a wrong SEQ_SKIPJesper Dangaard Brouer1-1/+1
The function dl_seq_show() returns 1 (equal to SEQ_SKIP) in case a seq_printf() call return -1. It should return -1. This SEQ_SKIP behavior brakes processing the proc file e.g. via a pipe or just through less. Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk> Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-02-24netfilter: xt_hashlimit fixEric Dumazet1-4/+1
Commit 784544739a25c30637397ace5489eeb6e15d7d49 (netfilter: iptables: lock free counters) broke xt_hashlimit netfilter module : This module was storing a pointer inside its xt_hashlimit_info, and this pointer is not relocated when we temporarly switch tables (iptables -L). This hack is not not needed at all (probably a leftover from ancient time), as each cpu should and can access to its own copy. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-02-20netfilter: fix hardcoded size assumptionsHagen Paul Pfeifer1-1/+1
get_random_bytes() is sometimes called with a hard coded size assumption of an integer. This could not be true for next centuries. This patch replace it with a compile time statement. Signed-off-by: Hagen Paul Pfeifer <hagen@jauu.net> Signed-off-by: Patrick McHardy <kaber@trash.net>
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