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2011-01-10netfilter: x_tables: dont block BH while reading countersEric Dumazet1-1/+2
Using "iptables -L" with a lot of rules have a too big BH latency. Jesper mentioned ~6 ms and worried of frame drops. Switch to a per_cpu seqlock scheme, so that taking a snapshot of counters doesnt need to block BH (for this cpu, but also other cpus). This adds two increments on seqlock sequence per ipt_do_table() call, its a reasonable cost for allowing "iptables -L" not block BH processing. Reported-by: Jesper Dangaard Brouer <hawk@comx.dk> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Patrick McHardy <kaber@trash.net> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Jesper Dangaard Brouer <hawk@comx.dk> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2010-10-04netfilter: unregister nf hooks, matches and targets in the reverse orderChangli Gao1-8/+4
Since we register nf hooks, matches and targets in order, we'd better unregister them in the reverse order. Signed-off-by: Changli Gao <xiaosuo@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-05-31netfilter: xtables: stackptr should be percpuEric Dumazet1-10/+3
commit f3c5c1bfd4 (netfilter: xtables: make ip_tables reentrant) introduced a performance regression, because stackptr array is shared by all cpus, adding cache line ping pongs. (16 cpus share a 64 bytes cache line) Fix this using alloc_percpu() Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-By: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-05-31netfilter: don't xt_jumpstack_alloc twice in xt_register_tableXiaotian Feng1-4/+0
In xt_register_table, xt_jumpstack_alloc is called first, later xt_replace_table is used. But in xt_replace_table, xt_jumpstack_alloc will be used again. Then the memory allocated by previous xt_jumpstack_alloc will be leaked. We can simply remove the previous xt_jumpstack_alloc because there aren't any users of newinfo between xt_jumpstack_alloc and xt_replace_table. Signed-off-by: Xiaotian Feng <dfeng@redhat.com> Cc: Patrick McHardy <kaber@trash.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jan Engelhardt <jengelh@medozas.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Alexey Dobriyan <adobriyan@gmail.com> Acked-By: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-04-21netfilter: x_tables: move sleeping allocation outside BH-disabled regionJan Engelhardt1-6/+6
The jumpstack allocation needs to be moved out of the critical region. Corrects this notice: BUG: sleeping function called from invalid context at mm/slub.c:1705 [ 428.295762] in_atomic(): 1, irqs_disabled(): 0, pid: 9111, name: iptables [ 428.295771] Pid: 9111, comm: iptables Not tainted 2.6.34-rc1 #2 [ 428.295776] Call Trace: [ 428.295791] [<c012138e>] __might_sleep+0xe5/0xed [ 428.295801] [<c019e8ca>] __kmalloc+0x92/0xfc [ 428.295825] [<f865b3bb>] ? xt_jumpstack_alloc+0x36/0xff [x_tables] Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-04-20Merge branch 'master' of /repos/git/net-next-2.6Patrick McHardy1-0/+1
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>
2010-04-19netfilter: xtables: make ip_tables reentrantJan Engelhardt1-0/+77
Currently, the table traverser stores return addresses in the ruleset itself (struct ip6t_entry->comefrom). This has a well-known drawback: the jumpstack is overwritten on reentry, making it necessary for targets to return absolute verdicts. Also, the ruleset (which might be heavy memory-wise) needs to be replicated for each CPU that can possibly invoke ip6t_do_table. This patch decouples the jumpstack from struct ip6t_entry and instead puts it into xt_table_info. Not being restricted by 'comefrom' anymore, we can set up a stack as needed. By default, there is room allocated for two entries into the traverser. arp_tables is not touched though, because there is just one/two modules and further patches seek to collapse the table traverser anyhow. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-03-30include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.hTejun Heo1-0/+1
percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-25netfilter: xtables: change targets to return error codeJan Engelhardt1-2/+10
Part of the transition of done by this semantic patch: // <smpl> @ rule1 @ struct xt_target 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 matches to return error codeJan Engelhardt1-2/+10
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: consolidate code into xt_request_find_matchJan Engelhardt1-0/+11
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-03-25netfilter: xtables: make use of xt_request_find_targetJan Engelhardt1-3/+1
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-03-18netfilter: xtables: replace custom duprintf with pr_debugJan Engelhardt1-9/+3
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-02-15netfilter: CONFIG_COMPAT: allow delta to exceed 32767Florian Westphal1-3/+3
with 32 bit userland and 64 bit kernels, it is unlikely but possible that insertion of new rules fails even tough there are only about 2000 iptables rules. This happens because the compat delta is using a short int. Easily reproducible via "iptables -m limit" ; after about 2050 rules inserting new ones fails with -ELOOP. Note that compat_delta included 2 bytes of padding on x86_64, so structure size remains the same. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2010-02-15netfilter: xtables: constify args in compat copying functionsJan Engelhardt1-4/+4
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-02-15netfilter: xtables: print details on size mismatchJan Engelhardt1-2/+6
Print which revision has been used and which size are which (kernel/user) for easier debugging. Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-02-10Merge branch 'master' of git://dev.medozas.de/linuxPatrick McHardy1-1/+57
2010-02-10netfilter: xtables: generate initial table on-demandJan Engelhardt1-1/+3
The static initial tables are pretty large, and after the net namespace has been instantiated, they just hang around for nothing. This commit removes them and creates tables on-demand at runtime when needed. Size shrinks by 7735 bytes (x86_64). Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-02-10netfilter: xtables: use xt_table for hook instantiationJan Engelhardt1-0/+54
The respective xt_table structures already have most of the metadata needed for hook setup. Add a 'priority' field to struct xt_table so that xt_hook_link() can be called with a reduced number of arguments. So should we be having more tables in the future, it comes at no static cost (only runtime, as before) - space saved: 6807373->6806555. Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2010-02-10netfilter: xtables: symmetric COMPAT_XT_ALIGN definitionAlexey Dobriyan1-2/+2
Rewrite COMPAT_XT_ALIGN in terms of dummy structure hack. Compat counters logically have nothing to do with it. Use ALIGN() macro while I'm at it for same types. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-09-22mm: replace various uses of num_physpages by totalram_pagesJan Beulich1-1/+1
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>
2009-08-24netfilter: xtables: mark initial tables constantJan Engelhardt1-3/+4
The inputted table is never modified, so should be considered const. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-06-13x_tables: Convert printk to pr_errJoe Perches1-8/+8
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-05-08netfilter: xtables: print hook name instead of maskJan Engelhardt1-4/+38
Users cannot make anything of these numbers. Let's just tell them directly. Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2009-04-28netfilter: revised locking for x_tablesStephen Hemminger1-25/+28
The x_tables are organized with a table structure and a per-cpu copies of the counters and rules. On older kernels there was a reader/writer lock per table which was a performance bottleneck. In 2.6.30-rc, this was converted to use RCU and the counters/rules which solved the performance problems for do_table but made replacing rules much slower because of the necessary RCU grace period. This version uses a per-cpu set of spinlocks and counters to allow to table processing to proceed without the cache thrashing of a global reader lock and keeps the same performance for table updates. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-24Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6David S. Miller1-5/+21
2009-02-20netfilter: iptables: lock free countersStephen Hemminger1-5/+21
The reader/writer lock in ip_tables is acquired in the critical path of processing packets and is one of the reasons just loading iptables can cause a 20% performance loss. The rwlock serves two functions: 1) it prevents changes to table state (xt_replace) while table is in use. This is now handled by doing rcu on the xt_table. When table is replaced, the new table(s) are put in and the old one table(s) are freed after RCU period. 2) it provides synchronization when accesing the counter values. This is now handled by swapping in new table_info entries for each cpu then summing the old values, and putting the result back onto one cpu. On a busy system it may cause sampling to occur at different times on each cpu, but no packet/byte counts are lost in the process. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Sucessfully tested on my dual quad core machine too, but iptables only (no ipv6 here) BTW, my new "tbench 8" result is 2450 MB/s, (it was 2150 MB/s not so long ago) Acked-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-02-18netfilter: make proc/net/ip* print names from foreign NFPROTOJan Engelhardt1-57/+142
When extensions were moved to the NFPROTO_UNSPEC wildcard in ab4f21e6fb1c09b13c4c3cb8357babe8223471bd, they disappeared from the procfs files. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-01-12netfilter 04/09: x_tables: fix match/target revision lookupPatrick McHardy1-0/+8
Commit 55b69e91 (netfilter: implement NFPROTO_UNSPEC as a wildcard for extensions) broke revision probing for matches and targets that are registered with NFPROTO_UNSPEC. Fix by continuing the search on the NFPROTO_UNSPEC list if nothing is found on the af-specific lists. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08netfilter: xtables: provide invoked family value to extensionsJan Engelhardt1-11/+12
By passing in the family through which extensions were invoked, a bit of data space can be reclaimed. The "family" member will be added to the parameter structures and the check functions be adjusted. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: xtables: move extension arguments into compound structure (5/6)Jan Engelhardt1-16/+16
This patch does this for target extensions' checkentry functions. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: xtables: move extension arguments into compound structure (2/6)Jan Engelhardt1-16/+16
This patch does this for match extensions' checkentry functions. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: xtables: do centralized checkentry call (1/2)Jan Engelhardt1-2/+10
It used to be that {ip,ip6,etc}_tables called extension->checkentry themselves, but this can be moved into the xtables core. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: x_tables: output bad hook mask in hexadecimalJan Engelhardt1-2/+2
It is a mask, and masks are most useful in hex. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: move Ebtables to use XtablesJan Engelhardt1-2/+7
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: implement NFPROTO_UNSPEC as a wildcard for extensionsJan Engelhardt1-0/+10
When a match or target is looked up using xt_find_{match,target}, Xtables will also search the NFPROTO_UNSPEC module list. This allows for protocol-independent extensions (like xt_time) to be reused from other components (e.g. arptables, ebtables). Extensions that take different codepaths depending on match->family or target->family of course cannot use NFPROTO_UNSPEC within the registration structure (e.g. xt_pkttype). Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: Introduce NFPROTO_* constantsJan Engelhardt1-8/+10
The netfilter subsystem only supports a handful of protocols (much less than PF_*) and even non-PF protocols like ARP and pseudo-protocols like PF_BRIDGE. By creating NFPROTO_*, we can earn a few memory savings on arrays that previously were always PF_MAX-sized and keep the pseudo-protocols to ourselves. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-10-08netfilter: Use unsigned types for hooknum and pf varsJan Engelhardt1-22/+25
and (try to) consistently use u_int8_t for the L3 family. Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-05-02netfilter: assign PDE->data before gluing PDE into /proc treeDenis V. Lunev1-7/+6
Replace proc_net_fops_create with proc_create_data. Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-29netfilter: x_tables: fix net namespace leak when reading /proc/net/xxx_tables_namesPavel Emelyanov1-1/+1
The seq_open_net() call should be accompanied with seq_release_net() one. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-14[NETFILTER]: annotate {arp,ip,ip6,x}tables with constJan Engelhardt1-9/+9
Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
2008-03-26[NET] NETNS: Omit seq_net_private->net without CONFIG_NET_NS.YOSHIFUJI Hideaki1-2/+2
Without CONFIG_NET_NS, no namespace other than &init_net exists, no need to store net in seq_net_private. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-01-31[NETFILTER]: x_tables: create per-netns /proc/net/*_tables_*Alexey Dobriyan1-10/+10
Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-31[NETFILTER]: x_tables: netns propagation for /proc/net/*_tables_namesAlexey Dobriyan1-12/+19
Propagate netns together with AF down to ->start/->next/->stop iterators. Choose table based on netns and AF for showing. Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-31[NETFILTER]: x_tables: semi-rewrite of /proc/net/foo_tables_*Alexey Dobriyan1-85/+145
There are many small but still wrong things with /proc/net/*_tables_* so I decided to do overhaul simultaneously making it more suitable for per-netns /proc/net/*_tables_* implementation. Fix a) xt_get_idx() duplicating now standard seq_list_start/seq_list_next iterators b) tables/matches/targets list was chosen again and again on every ->next c) multiple useless "af >= NPROTO" checks -- we simple don't supply invalid AFs there and registration function should BUG_ON instead. Regardless, the one in ->next() is the most useless -- ->next doesn't run at all if ->start fails. d) Don't use mutex_lock_interruptible() -- it can fail and ->stop is executed even if ->start failed, so unlock without lock is possible. As side effect, streamline code by splitting xt_tgt_ops into xt_target_ops, xt_matches_ops, xt_tables_ops. xt_tables_ops hooks will be changed by per-netns code. Code of xt_matches_ops, xt_target_ops is identical except the list chosen for iterating, but I think consolidating code for two files not worth it given "<< 16" hacks needed for it. [Patrick: removed unused enum in x_tables.c] Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-31[NETFILTER]: {ip,arp,ip6}_tables: fix sparse warnings in compat codePatrick McHardy1-4/+4
CHECK net/ipv4/netfilter/ip_tables.c net/ipv4/netfilter/ip_tables.c:1453:8: warning: incorrect type in argument 3 (different signedness) net/ipv4/netfilter/ip_tables.c:1453:8: expected int *size net/ipv4/netfilter/ip_tables.c:1453:8: got unsigned int [usertype] *size net/ipv4/netfilter/ip_tables.c:1458:44: warning: incorrect type in argument 3 (different signedness) net/ipv4/netfilter/ip_tables.c:1458:44: expected int *size net/ipv4/netfilter/ip_tables.c:1458:44: got unsigned int [usertype] *size net/ipv4/netfilter/ip_tables.c:1603:2: warning: incorrect type in argument 2 (different signedness) net/ipv4/netfilter/ip_tables.c:1603:2: expected unsigned int *i net/ipv4/netfilter/ip_tables.c:1603:2: got int *<noident> net/ipv4/netfilter/ip_tables.c:1627:8: warning: incorrect type in argument 3 (different signedness) net/ipv4/netfilter/ip_tables.c:1627:8: expected int *size net/ipv4/netfilter/ip_tables.c:1627:8: got unsigned int *size net/ipv4/netfilter/ip_tables.c:1634:40: warning: incorrect type in argument 3 (different signedness) net/ipv4/netfilter/ip_tables.c:1634:40: expected int *size net/ipv4/netfilter/ip_tables.c:1634:40: got unsigned int *size net/ipv4/netfilter/ip_tables.c:1653:8: warning: incorrect type in argument 5 (different signedness) net/ipv4/netfilter/ip_tables.c:1653:8: expected unsigned int *i net/ipv4/netfilter/ip_tables.c:1653:8: got int *<noident> net/ipv4/netfilter/ip_tables.c:1666:2: warning: incorrect type in argument 2 (different signedness) net/ipv4/netfilter/ip_tables.c:1666:2: expected unsigned int *i net/ipv4/netfilter/ip_tables.c:1666:2: got int *<noident> CHECK net/ipv4/netfilter/arp_tables.c net/ipv4/netfilter/arp_tables.c:1285:40: warning: incorrect type in argument 3 (different signedness) net/ipv4/netfilter/arp_tables.c:1285:40: expected int *size net/ipv4/netfilter/arp_tables.c:1285:40: got unsigned int *size net/ipv4/netfilter/arp_tables.c:1543:44: warning: incorrect type in argument 3 (different signedness) net/ipv4/netfilter/arp_tables.c:1543:44: expected int *size net/ipv4/netfilter/arp_tables.c:1543:44: got unsigned int [usertype] *size CHECK net/ipv6/netfilter/ip6_tables.c net/ipv6/netfilter/ip6_tables.c:1481:8: warning: incorrect type in argument 3 (different signedness) net/ipv6/netfilter/ip6_tables.c:1481:8: expected int *size net/ipv6/netfilter/ip6_tables.c:1481:8: got unsigned int [usertype] *size net/ipv6/netfilter/ip6_tables.c:1486:44: warning: incorrect type in argument 3 (different signedness) net/ipv6/netfilter/ip6_tables.c:1486:44: expected int *size net/ipv6/netfilter/ip6_tables.c:1486:44: got unsigned int [usertype] *size net/ipv6/netfilter/ip6_tables.c:1631:2: warning: incorrect type in argument 2 (different signedness) net/ipv6/netfilter/ip6_tables.c:1631:2: expected unsigned int *i net/ipv6/netfilter/ip6_tables.c:1631:2: got int *<noident> net/ipv6/netfilter/ip6_tables.c:1655:8: warning: incorrect type in argument 3 (different signedness) net/ipv6/netfilter/ip6_tables.c:1655:8: expected int *size net/ipv6/netfilter/ip6_tables.c:1655:8: got unsigned int *size net/ipv6/netfilter/ip6_tables.c:1662:40: warning: incorrect type in argument 3 (different signedness) net/ipv6/netfilter/ip6_tables.c:1662:40: expected int *size net/ipv6/netfilter/ip6_tables.c:1662:40: got unsigned int *size net/ipv6/netfilter/ip6_tables.c:1680:8: warning: incorrect type in argument 5 (different signedness) net/ipv6/netfilter/ip6_tables.c:1680:8: expected unsigned int *i net/ipv6/netfilter/ip6_tables.c:1680:8: got int *<noident> net/ipv6/netfilter/ip6_tables.c:1693:2: warning: incorrect type in argument 2 (different signedness) net/ipv6/netfilter/ip6_tables.c:1693:2: expected unsigned int *i net/ipv6/netfilter/ip6_tables.c:1693:2: got int *<noident> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-31[NETFILTER]: x_tables: return new table from {arp,ip,ip6}t_register_table()Alexey Dobriyan1-1/+11
Typical table module registers xt_table structure (i.e. packet_filter) and link it to list during it. We can't use one template for it because corresponding list_head will become corrupted. We also can't unregister with template because it wasn't changed at all and thus doesn't know in which list it is. So, we duplicate template at the very first step of table registration. Table modules will save it for use during unregistration time and actual filtering. Do it at once to not screw bisection. P.S.: renaming i.e. packet_filter => __packet_filter is temporary until full netnsization of table modules is done. Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-31[NETFILTER]: x_tables: per-netns xt_tablesAlexey Dobriyan1-10/+24
In fact all we want is per-netns set of rules, however doing that will unnecessary complicate routines such as ipt_hook()/ipt_do_table, so make full xt_table array per-netns. Every user stubbed with init_net for a while. Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-31[NETFILTER]: x_tables: change xt_table_register() return value conventionAlexey Dobriyan1-6/+8
Switch from 0/-E to ptr/PTR_ERR convention. Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28[NETFILTER]: ip_tables: move compat offset calculation to x_tablesPatrick McHardy1-0/+58
Its needed by ip6_tables and arp_tables as well. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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