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This patch allows you to set expectfn which is specifically used
by the NAT side of most of the existing conntrack helpers.
I have added a symbol map that uses a string as key to look up for
the function that is attached to the expectation object. This is
the best solution I came out with to solve this issue.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Timed out entries were still matched till the garbage collector
purged them out. The fix is verified in the testsuite.
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
The "nomatch" keyword and option is added to the hash:*net* types,
by which one can add exception entries to sets. Example:
ipset create test hash:net
ipset add test 192.168.0/24
ipset add test 192.168.0/30 nomatch
In this case the IP addresses from 192.168.0/24 except 192.168.0/30
match the elements of the set.
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
If the set is full, the SET target cannot add more elements.
Log warning so that the admin got notified about it.
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
ipset is actually using NFPROTO values rather than AF (xt_set passes
that along).
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Pull ARM updates from Russell King.
* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
ARM: 7358/1: perf: add PMU hotplug notifier
ARM: 7357/1: perf: fix overflow handling for xscale2 PMUs
ARM: 7356/1: perf: check that we have an event in the PMU IRQ handlers
ARM: 7355/1: perf: clear overflow flag when disabling counter on ARMv7 PMU
ARM: 7354/1: perf: limit sample_period to half max_period in non-sampling mode
ARM: ecard: ensure fake vma vm_flags is setup
ARM: 7346/1: errata: fix PL310 erratum #753970 workaround selection
ARM: 7345/1: errata: update workaround for A9 erratum #743622
ARM: 7348/1: arm/spear600: fix one-shot timer
ARM: 7339/1: amba/serial.h: Include types.h for resolving dependency of type bool
The SET_PORT functions are implemented in port.c, which is part
of mlx4_core, these functions are exported. The functions are in use by
the mlx4_en module (were originally part of mlx4_en).
Their declaration remained in mlx4_en module, moving the declaration to the right location.
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
When calling nfc_dep_link_up, we implicitely are in initiator mode.
Which means we also can provide the general bytes as a function argument,
as all drivers will eventually request them.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
For user space to know if a device is up or down.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Wireless Broadcom chips can have either their SPROM data stored
on either external SPROM or on-chip OTP memory. Both are accessed
through the same register space. This patch adds support for the
on-chip OTP memory.
Tested with:
BCM43224 OTP and SPROM
BCM4331 SPROM
BCM4313 OTP
This patch is in response to linux-wireless thread [1].
[1] http://article.gmane.org/gmane.linux.kernel.wireless.general/85426
Tested-by: Saul St. John <saul.stjohn@gmail.com>
Tested-by: Rafal Milecki <zajec5@gmail.com>
Tested-by: Hauke Mehrtens <hauke@hauke-m.de>
Cc: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Add the signal strength (in dBm only for now) to
frames that are received via nl80211's various
frame APIs.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Kalle Valo <kvalo@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Conflicts:
drivers/net/vmxnet3/vmxnet3_drv.c
Small vmxnet3 conflict with header size bug fix in 'net'.
Signed-off-by: David S. Miller <davem@davemloft.net>
Merge the emailed seties of 19 patches from Andrew Morton
* akpm:
rapidio/tsi721: fix queue wrapping bug in inbound doorbell handler
memcg: fix mapcount check in move charge code for anonymous page
mm: thp: fix BUG on mm->nr_ptes
alpha: fix 32/64-bit bug in futex support
memcg: fix GPF when cgroup removal races with last exit
debugobjects: Fix selftest for static warnings
floppy/scsi: fix setting of BIO flags
memcg: fix deadlock by inverting lrucare nesting
drivers/rtc/rtc-r9701.c: fix crash in r9701_remove()
c2port: class_create() returns an ERR_PTR
pps: class_create() returns an ERR_PTR, not NULL
hung_task: fix the broken rcu_lock_break() logic
vfork: kill PF_STARTING
coredump_wait: don't call complete_vfork_done()
vfork: make it killable
vfork: introduce complete_vfork_done()
aio: wake up waiters when freeing unused kiocbs
kprobes: return proper error code from register_kprobe()
kmsg_dump: don't run on non-error paths by default
When moving tasks from old memcg (with move_charge_at_immigrate on new
memcg), followed by removal of old memcg, hit General Protection Fault in
mem_cgroup_lru_del_list() (called from release_pages called from
free_pages_and_swap_cache from tlb_flush_mmu from tlb_finish_mmu from
exit_mmap from mmput from exit_mm from do_exit).
Somewhat reproducible, takes a few hours: the old struct mem_cgroup has
been freed and poisoned by SLAB_DEBUG, but mem_cgroup_lru_del_list() is
still trying to update its stats, and take page off lru before freeing.
A task, or a charge, or a page on lru: each secures a memcg against
removal. In this case, the last task has been moved out of the old memcg,
and it is exiting: anonymous pages are uncharged one by one from the
memcg, as they are zapped from its pagetables, so the charge gets down to
0; but the pages themselves are queued in an mmu_gather for freeing.
Most of those pages will be on lru (and force_empty is careful to
lru_add_drain_all, to add pages from pagevec to lru first), but not
necessarily all: perhaps some have been isolated for page reclaim, perhaps
some isolated for other reasons. So, force_empty may find no task, no
charge and no page on lru, and let the removal proceed.
There would still be no problem if these pages were immediately freed; but
typically (and the put_page_testzero protocol demands it) they have to be
added back to lru before they are found freeable, then removed from lru
and freed. We don't see the issue when adding, because the
mem_cgroup_iter() loops keep their own reference to the memcg being
scanned; but when it comes to mem_cgroup_lru_del_list().
I believe this was not an issue in v3.2: there, PageCgroupAcctLRU and
PageCgroupUsed flags were used (like a trick with mirrors) to deflect view
of pc->mem_cgroup to the stable root_mem_cgroup when neither set.
38c5d72f3ebe ("memcg: simplify LRU handling by new rule") mercifully
removed those convolutions, but left this General Protection Fault.
But it's surprisingly easy to restore the old behaviour: just check
PageCgroupUsed in mem_cgroup_lru_add_list() (which decides on which lruvec
to add), and reset pc to root_mem_cgroup if page is uncharged. A risky
change? just going back to how it worked before; testing, and an audit of
uses of pc->mem_cgroup, show no problem.
And there's a nice bonus: with mem_cgroup_lru_add_list() itself making
sure that an uncharged page goes to root lru, mem_cgroup_reset_owner() no
longer has any purpose, and we can safely revert 4e5f01c2b9b9 ("memcg:
clear pc->mem_cgroup if necessary").
Calling update_page_reclaim_stat() after add_page_to_lru_list() in swap.c
is not strictly necessary: the lru_lock there, with RCU before memcg
structures are freed, makes mem_cgroup_get_reclaim_stat_from_page safe
without that; but it seems cleaner to rely on one dependency less.
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Konstantin Khlebnikov <khlebnikov@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Previously it was (ab)used by utrace. Then it was wrongly used by the
scheduler code.
Currently it is not used, kill it before it finds the new erroneous user.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Now that CLONE_VFORK is killable, coredump_wait() no longer needs
complete_vfork_done(). zap_threads() should find and kill all tasks with
the same ->mm, this includes our parent if ->vfork_done is set.
mm_release() becomes the only caller, unexport complete_vfork_done().
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Make vfork() killable.
Change do_fork(CLONE_VFORK) to do wait_for_completion_killable(). If it
fails we do not return to the user-mode and never touch the memory shared
with our child.
However, in this case we should clear child->vfork_done before return, we
use task_lock() in do_fork()->wait_for_vfork_done() and
complete_vfork_done() to serialize with each other.
Note: now that we use task_lock() we don't really need completion, we
could turn task->vfork_done into "task_struct *wake_up_me" but this needs
some complications.
NOTE: this and the next patches do not affect in-kernel users of
CLONE_VFORK, kernel threads run with all signals ignored including
SIGKILL/SIGSTOP.
However this is obviously the user-visible change. Not only a fatal
signal can kill the vforking parent, a sub-thread can do execve or
exit_group() and kill the thread sleeping in vfork().
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
No functional changes.
Move the clear-and-complete-vfork_done code into the new trivial helper,
complete_vfork_done().
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Since commit 04c6862c055f ("kmsg_dump: add kmsg_dump() calls to the
reboot, halt, poweroff and emergency_restart paths"), kmsg_dump() gets
run on normal paths including poweroff and reboot.
This is less than ideal given pstore implementations that can only
represent single backtraces, since a reboot may overwrite a stored oops
before it's been picked up by userspace. In addition, some pstore
backends may have low performance and provide a significant delay in
reboot as a result.
This patch adds a printk.always_kmsg_dump kernel parameter (which can also
be changed from userspace). Without it, the code will only be run on
failure paths rather than on normal paths. The option can be enabled in
environments where there's a desire to attempt to audit whether or not a
reboot was cleanly requested or not.
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Acked-by: Seiji Aguchi <seiji.aguchi@hds.com>
Cc: Seiji Aguchi <seiji.aguchi@hds.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Marco Stornelli <marco.stornelli@gmail.com>
Cc: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Don Zickus <dzickus@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull networking fixes from David Miller:
1) TCP SACK processing can calculate an incorrect reordering value in
some cases, fix from Neal Cardwell.
2) tcp_mark_head_lost() can split SKBs in situations where it should
not, violating send queue invariants expected by other pieces of
code and thus resulting (eventually) in corrupted retransmit state
counters. Also from Neal Cardwell.
3) qla3xxx erroneously calls spin_lock_irqrestore() with constant
hw_flags of zero. Fix from Santosh Nayak.
4) Fix NULL deref in rt2x00, from Gabor Juhos.
5) pch_gbe passes address of wrong typed object to pch_gbe_validate_option
thus corrupting part of the value. From Dan Carpenter.
6) We must check the return value of nlmsg_parse() before trying to use
the results. From Eric Dumazet.
7) Bridging code fails to check return value of ipv6_dev_get_saddr()
thus potentially leaving uninitialized garbage in the outgoing ipv6
header. From Ulrich Weber.
8) Due to rounding and a reversed operation on jiffies, bridge message
ages can go backwards instead of forwards, thus breaking STP. Fixes
from Joakim Tjernlund.
9) r8169 modifies Config* registers without properly holding the
Config9346 lock, resulting in corrupted IP fragments on some chips.
Fix from Francois Romieu.
10) NET_PACKET_ENGINE default wan't set properly during the network
driver mega-move. Fix from Stephen Hemminger.
11) vmxnet3 uses TCP header size where it actually should use the UDP
header size, fix from Shreyas Bhatewara.
12) Netfilter bridge module autoload is busted in the compat case, fix
from Florian Westphal.
13) Wireless Key removal was not setting multicast bits correctly thus
accidently killing the unicast key 0 and thus all traffic stops.
Fix from Johannes Berg.
14) Fix endless retries of A-MPDU transmissions in brcm80211 driver.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (22 commits)
qla3xxx: ethernet: Fix bogus interrupt state flag.
bridge: check return value of ipv6_dev_get_saddr()
rtnetlink: fix rtnl_calcit() and rtnl_dump_ifinfo()
bridge: message age needs to increase, not decrease.
bridge: Adjust min age inc for HZ > 256
tcp: don't fragment SACKed skbs in tcp_mark_head_lost()
r8169: corrupted IP fragments fix for large mtu.
packetengines: fix config default
vmxnet3: Fix transport header size
enic: fix an endian bug in enic_probe()
pch_gbe: memory corruption calling pch_gbe_validate_option()
tg3: Fix tg3_get_stats64 for 5700 / 5701 devs
tcp: fix false reordering signal in tcp_shifted_skb
tcp: fix comment for tp->highest_sack
netfilter: bridge: fix module autoload in compat case
brcm80211: smac: only print block-ack timeout message at trace level
brcm80211: smac: fix endless retry of A-MPDU transmissions
mac80211: Fix a warning on changing to monitor mode from STA
mac80211: zero initialize count field in ieee80211_tx_rate
iwlwifi: fix key removal
...
Pull per-cpu patches from Tejun Heo:
"This pull request contains four patches. One replaces manual clearing
with bitmap_clear(), two fix generic definition of __this_cpu ops so
that they don't choose unnecessarily strict arch version. One makes
_this_cpu definition use raw_local_irq_*() so that it doesn't end up
wrecking irq on/off state tracking when used from inside lockdep.
Of the four patches, the raw_local_irq_*() update is the most
important, so please feel free to cherry pick only that one patch and
ignore the rest if you want to - commit e920d5971d 'percpu: use
raw_local_irq_* in _this_cpu op'."
* 'for-3.3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
percpu: fix __this_cpu_{sub,inc,dec}_return() definition
percpu: use raw_local_irq_* in _this_cpu op
percpu: fix generic definition of __this_cpu_add_and_return()
percpu: use bitmap_clear
This patch adds an attribute, NL80211_ATTR_INACTIVITY_TIMEOUT,
to set the inactivity timeout which can be used to remove the
station in AP mode. This can be passed in NL80211_CMD_START_AP
and used by the drivers which have AP MLME in firmware but
don't support get_station() properly. To disable inactivity
timer in userspace, wpa_s for example, there is a new flag,
NL80211_FEATURE_INACTIVITY_TIMER, in nl80211_feature_flags
through which drivers can register their capability to use
the inactivity timeout to free the stations.
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Some drivers use internal netdev stats member to store part of their
stats, yet advertize ndo_get_stats64() to implement some 64bit fields.
Allow them to use netdev_stats_to_stats64() helper to make the copy of
netdev stats before they compute their 64bit counters.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
For A-MPDU rx it makes sense to only process the signal strength once per
aggregate instead of once per subframe. Additonally, some hardware (e.g.
Atheros) only provides valid signal strength information for the last
subframe.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
I forgot to update the kernel-doc in my patch
to redesign AP mode APIs, fix that now.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Mesh peer links are established only if average rssi of the peer
candidate satisfies the threshold. This is not in 802.11s specification
but was requested by David Fulgham, an open80211s user. This is a way to avoid
marginal peer links with stations that are barely within range.
This patch adds a new mesh configuration parameter, mesh_rssi_threshold. This
feature is supported only for hardwares that report signal in dBm.
Signed-off-by: Ashok Nagarajan <ashok@cozybit.com>
Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
On SoCs the sprom is stored in the nvram in a special partition on the
flash chip. The nvram contains the sprom for the main bus, but
sometimes also for a pci devices using bcma. This patch makes it
possible for the arch code to register a function to fetch the needed
sprom from the nvram and provide it to the bcma code.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This function is needed by the bcm47xx arch code to get the number of
the ieee80211 core.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This patch extends the sprom struct to contain all sprom attributes
found in sprom version 1 to 9. This was done accordingly to the open
source part of the Broadcom SDK.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This member contains the country code encoded with two chars
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
On sprom version 4 and 5 there are 4 values for pa_2g, pa_5gl, pa_5g
and pa_5gh, for sprom version 8 and 9 there are only 3. Make the per
path sprom store also work for older sprom versions.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
There is no 2.4 GHz or 5GHz antenna gain stored in sprom. The sprom
just stores the gain values for antenna 1 and 2 or 1 to 4 for more
recent sprom versions. On old devices antenna 2 was used for 5 GHz wifi.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Some parts of the sprom struct are bigger than needed.
The leddc and maxpwr values are just 8 bit long and not 16.
rxpo2g and rxpo5g are signed
I got these information for the open source part of the Broadcom SDK
covering sprom version 1 to 9. rxpo2g contained a negative number on my
bcm5354 based device, this cased an error and Broadcom SDK says this is
signed.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
With branch stack sampling, it is possible to filter by priv levels.
In system-wide mode, that means it is possible to capture only user
level branches. The builtin SW LBR filter needs to disassemble code
based on LBR captured addresses. For that, it needs to know the task
the addresses are associated with. Because of context switches, the
content of the branch stack buffer may contain addresses from
different tasks.
We need a callback on context switch to either flush the branch stack
or save it. This patch adds a new callback in struct pmu which is called
during context switches. The callback is called only when necessary.
That is when a system-wide context has, at least, one event which
uses PERF_SAMPLE_BRANCH_STACK. The callback is never called for
per-thread context.
In this version, the Intel x86 code simply flushes (resets) the LBR
on context switches (fills it with zeroes). Those zeroed branches are
then filtered out by the SW filter.
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1328826068-11713-11-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This patch adds the ability to sample taken branches to the
perf_event interface.
The ability to capture taken branches is very useful for all
sorts of analysis. For instance, basic block profiling, call
counts, statistical call graph.
This new capability requires hardware assist and as such may
not be available on all HW platforms. On Intel x86 it is
implemented on top of the Last Branch Record (LBR) facility.
To enable taken branches sampling, the PERF_SAMPLE_BRANCH_STACK
bit must be set in attr->sample_type.
Sampled taken branches may be filtered by type and/or priv
levels.
The patch adds a new field, called branch_sample_type, to the
perf_event_attr structure. It contains a bitmask of filters
to apply to the sampled taken branches.
Filters may be implemented in HW. If the HW filter does not exist
or is not good enough, some arch may also implement a SW filter.
The following generic filters are currently defined:
- PERF_SAMPLE_USER
only branches whose targets are at the user level
- PERF_SAMPLE_KERNEL
only branches whose targets are at the kernel level
- PERF_SAMPLE_HV
only branches whose targets are at the hypervisor level
- PERF_SAMPLE_ANY
any type of branches (subject to priv levels filters)
- PERF_SAMPLE_ANY_CALL
any call branches (may incl. syscall on some arch)
- PERF_SAMPLE_ANY_RET
any return branches (may incl. syscall returns on some arch)
- PERF_SAMPLE_IND_CALL
indirect call branches
Obviously filter may be combined. The priv level bits are optional.
If not provided, the priv level of the associated event are used. It
is possible to collect branches at a priv level different from the
associated event. Use of kernel, hv priv levels is subject to permissions
and availability (hv).
The number of taken branch records present in each sample may vary based
on HW, the type of sampled branches, the executed code. Therefore
each sample contains the number of taken branches it contains.
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1328826068-11713-2-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This patch recodes the MRRS cap for 5719 A0 devices as a PCI quirk.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
