All other callers already hold either ->mmap_sem (exclusive) or
->page_table_lock. And we need it because some page table flushing
instanced do work explicitly with ge tables.
See e.g. arch/powerpc/mm/tlb_hash32.c, flush_tlb_range() and
flush_range() in there. The same goes for uml, with a lot more
extensive playing with page tables.
Almost all callers are actually fine - flush_tlb_range() may have no
need to bother playing with page tables, but it can do so safely; again,
this caller is the sole exception - everything else either has exclusive
->mmap_sem on the mm in question, or mm->page_table_lock is held.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
In 'ql_adapter_initialize'
the first call for 'spin_unlock_irqrestore()' is with hw_flags = 0,
which is as good as 'spin_unlock_irq()' (unconditional interrupt
enabling). If this is intended, then for better performance
'spin_unlock_irqrestore()' can be replaced with 'spin_unlock_irq()'
and 'spin_lock_irqsave()' can be replaced by 'spin_lock_irq()
Signed-off-by: Santosh Nayak <santoshprasadnayak@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Very basic support for TeeJet Mt.Ventoux board. Able to boot via
board-generic and ramdisk/initramfs, however most of peripherals are
not supported. Produces tons of twl4030 related errors as this board
doesn't have twl4030 installed.
Signed-off-by: Ilya Yanok <yanok@emcraft.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Tony Lindgren <tony@atomide.com>
We need just one ifdef for each ARCH_OMAP2/3/4.
Also remove the comment about i2c & twl driver as it's
pretty obvious that we still need some platform data
until drivers are converted to device tree.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Otherwise we'll get undefined reference to `gic_of_init' or
undefined reference to `omap_intc_of_init'.
This was caused by commit fbf75da733
(ARM: OMAP2+: board-generic: Use of_irq_init API).
Signed-off-by: Tony Lindgren <tony@atomide.com>
otherwise source IPv6 address of ICMPV6_MGM_QUERY packet
might be random junk if IPv6 is disabled on interface or
link-local address is not yet ready (DAD).
Signed-off-by: Ulrich Weber <ulrich.weber@sophos.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tidying up some debug statements in brcms_c_ampdu_dotxstatus_complete()
that got broken strings to satisfy checkpatch, but the rules changed.
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Alwin Beukers <alwin@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The module init function of brcmfmac calls init functions for SDIO and
USB doing driver registration. This patch removes terminating the module
init when a driver registration for one host interface fails.
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The usb code defines a structure for counting statistics. However,
it should use the statistics entry provided in brcmf_bus as that is
exposed to the net_device. The usb private statistics counter only
remains with counters for control packets between driver and usb
device.
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Several fields in this structure are only written once or not used
at all. Remaining two fields have been moved and brcmf_usb_attrib
definition has been removed.
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Kan Yan <kanyan@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
In brcmf_usb_up() the variable devinfo was checked for being
a NULL pointer, but this can not happen. Also the check was done
after dereferencing the pointer. This patch removes the check.
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Kan Yan <kanyan@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
In usb.c, routine _rtl_usb_init_sw() always returns 0, and rtl_usb_probe()
never checks the returned value. Thus we can change _rtl_usb_init_sw() to
a void routine. In addition, remove the underscore at the beginning of the
name of the routine.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
In the unlikely event of a misread of the USB end point count, the driver
generates a divide fault. To prevent this, add a check of the value
returned by _rtl_usb_init(). In addition, add some logging to indicate
why the condition occurred.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
When associating and particularly when disassociating
there's no need to notify the driver about changes
with multiple calls to bss_info_changed, we should
combine the QoS enabling/disabling into the same call
as otherwise the driver could get confused about QoS
suddenly getting disabled while connected.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
There's no need to hardcode a subset of the
radiotap header for cooked monitor receive,
we can just reuse the normal monitor mode
radiotap code. This simplifies the code and
extends the information available on cooked
monitor interfaces.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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>
RANN, PREP and PERR propagation should happen only if the
dot11MeshForwarding is true. Besides, data frame should not be
forwarded if dot11MeshForwarding is false. This redundant checking
is necessary to avoid the broadcasted ARP breaking the non-forwarding
rule.
Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
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>
Because of the constant size and guaranteed 16 bit alignment, the inline
compare_ether_addr function is much cheaper than calling memcmp.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
When we destroy a cm_id, we must purge associated events from the
event queue. If the cm_id is for a listen request, we also purge
corresponding pending connect requests. This requires destroying
the cm_id's associated with the connect requests by calling
rdma_destroy_id(). rdma_destroy_id() blocks until all outstanding
callbacks have completed.
The issue is that we hold file->mut while purging events from the
event queue. We also acquire file->mut in our event handler. Calling
rdma_destroy_id() while holding file->mut can lead to a deadlock,
since the event handler callback cannot acquire file->mut, which
prevents rdma_destroy_id() from completing.
Fix this by moving events to purge from the event queue to a temporary
list. We can then release file->mut and call rdma_destroy_id()
outside of holding any locks.
Bug report by Or Gerlitz <ogerlitz@mellanox.com>:
[ INFO: possible circular locking dependency detected ]
3.3.0-rc5-00008-g79f1e43-dirty #34 Tainted: G I
tgtd/9018 is trying to acquire lock:
(&id_priv->handler_mutex){+.+.+.}, at: [<ffffffffa0359a41>] rdma_destroy_id+0x33/0x1f0 [rdma_cm]
but task is already holding lock:
(&file->mut){+.+.+.}, at: [<ffffffffa02470fe>] ucma_free_ctx+0xb6/0x196 [rdma_ucm]
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&file->mut){+.+.+.}:
[<ffffffff810682f3>] lock_acquire+0xf0/0x116
[<ffffffff8135f179>] mutex_lock_nested+0x64/0x2e6
[<ffffffffa0247636>] ucma_event_handler+0x148/0x1dc [rdma_ucm]
[<ffffffffa035a79a>] cma_ib_handler+0x1a7/0x1f7 [rdma_cm]
[<ffffffffa0333e88>] cm_process_work+0x32/0x119 [ib_cm]
[<ffffffffa03362ab>] cm_work_handler+0xfb8/0xfe5 [ib_cm]
[<ffffffff810423e2>] process_one_work+0x2bd/0x4a6
[<ffffffff810429e2>] worker_thread+0x1d6/0x350
[<ffffffff810462a6>] kthread+0x84/0x8c
[<ffffffff81369624>] kernel_thread_helper+0x4/0x10
-> #0 (&id_priv->handler_mutex){+.+.+.}:
[<ffffffff81067b86>] __lock_acquire+0x10d5/0x1752
[<ffffffff810682f3>] lock_acquire+0xf0/0x116
[<ffffffff8135f179>] mutex_lock_nested+0x64/0x2e6
[<ffffffffa0359a41>] rdma_destroy_id+0x33/0x1f0 [rdma_cm]
[<ffffffffa024715f>] ucma_free_ctx+0x117/0x196 [rdma_ucm]
[<ffffffffa0247255>] ucma_close+0x77/0xb4 [rdma_ucm]
[<ffffffff810df6ef>] fput+0x117/0x1cf
[<ffffffff810dc76e>] filp_close+0x6d/0x78
[<ffffffff8102b667>] put_files_struct+0xbd/0x17d
[<ffffffff8102b76d>] exit_files+0x46/0x4e
[<ffffffff8102d057>] do_exit+0x299/0x75d
[<ffffffff8102d599>] do_group_exit+0x7e/0xa9
[<ffffffff8103ae4b>] get_signal_to_deliver+0x536/0x555
[<ffffffff81001717>] do_signal+0x39/0x634
[<ffffffff81001d39>] do_notify_resume+0x27/0x69
[<ffffffff81361c03>] retint_signal+0x46/0x83
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&file->mut);
lock(&id_priv->handler_mutex);
lock(&file->mut);
lock(&id_priv->handler_mutex);
*** DEADLOCK ***
1 lock held by tgtd/9018:
#0: (&file->mut){+.+.+.}, at: [<ffffffffa02470fe>] ucma_free_ctx+0xb6/0x196 [rdma_ucm]
stack backtrace:
Pid: 9018, comm: tgtd Tainted: G I 3.3.0-rc5-00008-g79f1e43-dirty #34
Call Trace:
[<ffffffff81029e9c>] ? console_unlock+0x18e/0x207
[<ffffffff81066433>] print_circular_bug+0x28e/0x29f
[<ffffffff81067b86>] __lock_acquire+0x10d5/0x1752
[<ffffffff810682f3>] lock_acquire+0xf0/0x116
[<ffffffffa0359a41>] ? rdma_destroy_id+0x33/0x1f0 [rdma_cm]
[<ffffffff8135f179>] mutex_lock_nested+0x64/0x2e6
[<ffffffffa0359a41>] ? rdma_destroy_id+0x33/0x1f0 [rdma_cm]
[<ffffffff8106546d>] ? trace_hardirqs_on_caller+0x11e/0x155
[<ffffffff810654b1>] ? trace_hardirqs_on+0xd/0xf
[<ffffffffa0359a41>] rdma_destroy_id+0x33/0x1f0 [rdma_cm]
[<ffffffffa024715f>] ucma_free_ctx+0x117/0x196 [rdma_ucm]
[<ffffffffa0247255>] ucma_close+0x77/0xb4 [rdma_ucm]
[<ffffffff810df6ef>] fput+0x117/0x1cf
[<ffffffff810dc76e>] filp_close+0x6d/0x78
[<ffffffff8102b667>] put_files_struct+0xbd/0x17d
[<ffffffff8102b5cc>] ? put_files_struct+0x22/0x17d
[<ffffffff8102b76d>] exit_files+0x46/0x4e
[<ffffffff8102d057>] do_exit+0x299/0x75d
[<ffffffff8102d599>] do_group_exit+0x7e/0xa9
[<ffffffff8103ae4b>] get_signal_to_deliver+0x536/0x555
[<ffffffff810654b1>] ? trace_hardirqs_on+0xd/0xf
[<ffffffff81001717>] do_signal+0x39/0x634
[<ffffffff8135e037>] ? printk+0x3c/0x45
[<ffffffff8106546d>] ? trace_hardirqs_on_caller+0x11e/0x155
[<ffffffff810654b1>] ? trace_hardirqs_on+0xd/0xf
[<ffffffff81361803>] ? _raw_spin_unlock_irq+0x2b/0x40
[<ffffffff81039011>] ? set_current_blocked+0x44/0x49
[<ffffffff81361bce>] ? retint_signal+0x11/0x83
[<ffffffff81001d39>] do_notify_resume+0x27/0x69
[<ffffffff8118a1fe>] ? trace_hardirqs_on_thunk+0x3a/0x3f
[<ffffffff81361c03>] retint_signal+0x46/0x83
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
The attempt to display the implementation ID needs to be conditional on
whether or not CONFIG_NFS_V4_1 is defined
Reported-by: Bryan Schumaker <Bryan.Schumaker@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
When compiled without NFS v4 configured these function won't be defined
and the compiler will yell.
Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Several MAC address comparison functions assume 16 bit alignment for pointers
passed to them. Since the addition of the control_port field, alignment
for the IBSS bssid was off by one, causing a severe performance hit on
architectures without efficient unaligned access (e.g. MIPS).
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
In mwifiex_drv_change_adhoc_chan() we pass channel to
mwifiex_bss_ioctl_ibss_channel() which sets the high 16 bits. This
works on little endian systems but not on big endian ones. I've changed
mwifiex_drv_change_adhoc_chan() to use a 16 bit variable. This matches
the other functions in the file.
I considered changing mwifiex_change_adhoc_chan() as well but it turns
out that the function isn't implemented so I just removed the
definition.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Use new RNDIS_WLAN_NUM_KEYS for checks in add_wep_key() and add_wpa_key().
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
'beacon_period' in 'struct ndis_80211_conf' is __le32 instead of __le16 so
le32_to_cpu must be used instead of le16_to_cpu.
Also correct 'beacon_interval' variables used for passing this value forward
from u16 to u32 and rename those variables 'beacon_period' This is to avoid
confusion because 'beacon_interval' is defined as __le16 at other structure,
'struct ndis_80211_fixed_ies'.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
If we pick a high value for "offset" then it could lead to an integer
overflow and we would get past the check for:
if (offset + len > buflen) { ...
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
These variables can never be less than zero because we cap them in
get_device_pmkids(). Let's make them unsigned here because it's simpler
to not have to worry about negative numbers when we read the code.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
If "offset" is negative then we can get past this check:
if (offset > CONTROL_BUFFER_SIZE)
Or if we pick a very high "req_ie_len" then we can get around the check:
if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
I made "resp_ie_len" and "req_ie_len" unsigned. I don't know if it was
intentional that they were signed in the original.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
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>
When using the bcm5354 (Soc with integrated LP-PHY Wifi) with a recent
firmware >= 478.104 it runs out of memory after a very short time in
OpenWrt after doing an active scan or any thing else where packages are
send. This was cased by a gpio misconfiguration, the firmware triggered
the GPIO pins used for buttons on some devices and that caused an other
driver (OpenWrt diag) listening for these buttons irqs to send many
messages to the user space.
This patch fixes the bug for my devices (Asus WL-520GU) and makes it
work with firmware 666.2. Now the firmware just uses LED GPIO pin
number 1 and not the button pins any more.
This is the GPIO Pin layout used on my device, see [0].
GPIO pin layout:
pin# name type
0 power led
1 wlan led
2 reset button
3 ses buttom
This is the nvram configuration output of "nvram show |grep gpio"
related nvram configuration:
wl0gpio2=11
wl0gpio3=11
wl0gpio0=11
wl0gpio1=0x02
reset_gpio=2
[0]: https://dev.openwrt.org/browser/trunk/package/broadcom-diag/src/diag.c
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
its better to zero initialize the 'valid_phy_rate_idx' array completely
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
According to Section Y.7.4 Actions on receipt of proactive RANN, an individually
addressed PREQ should be generated towards the neighbor peer mesh STA indicated
in the RANN Sender Address field in the forwarding information.
Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Currently if valid SSID list is provided in scan request, driver
performs specific SSID scan otherwise wildcard scan is chosen.
When wpa_supplicant provides valid SSID list followed by
zero-length SSID for wildcard scan, only specific SSID scan is
performed by driver. Actually driver is expected to do both type
of scanning in this case. The patch fixes this issue.
Also, use SSID list pointer provided by stack directly, instead
of copying SSID's to local structure.
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Use struct cfg80211_ssid available in include/net/cfg80211.h
instead of having similar definition in driver.
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
1. Driver and firmware do not support 22Mbps and 72Mbps bitrates.
Remove them from the rate table advertised to cfg80211.
2. First 4 rates from mwifiex_rates table are not valid for
5GHz/A band. Set correct bitrate array's index and no of rates for
ieee80211_supported_band for 5GHz band.
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Nishant Sarmukadam <nishants@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: Kiran Divekar <dkiran@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
On SoCs the sprom is often stored in nvram in the flashchip. This patch
registers a sprom fallback callback handler in bcma and provides the
sprom needed for this device.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
