The structure brcmf_sdio contains a number of counters that are useful
for debugging. These were not available in user-space. This patch
exposes them in debugfs under the filename 'counters'.
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>
This patch adds debugfs support to brcmfmac. It provide helper functions
to setup the debugfs folder structure for the driver, which has following
hierarchy:
<debugfs_mount>/brcmfmac/<dev_name>/
ie.: /sys/kernel/debug/brcmfmac/mmc0:0001:2/
The new source file provides functions to create and remove the two
folders and a function to retrieve the device-specific folder so files
can be created in it.
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>
This patch fixes potential NULL pointer dereference in ampdu. This
was found running smatch static code checker. Smatch warning says:
drivers/net/wireless/brcm80211/brcmsmac/ampdu.c:741 brcms_c_sendampdu()
warn: variable dereferenced before check 'p'
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The function brcms_set_hint() does not add any functionality
so regulatory_hint() can be called directly. The error value
has been removed from the message when regulatory_hint() fails.
Reported-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
steps to recreate:
load latest ath9k driver with AR9485
stop the network-manager and wpa_supplicant
bring the interface up
Call Trace:
[<ffffffffa0517490>] ? ath_hw_check+0xe0/0xe0 [ath9k]
[<ffffffff812cd1e8>] __const_udelay+0x28/0x30
[<ffffffffa03bae7a>] ar9003_get_pll_sqsum_dvc+0x4a/0x80 [ath9k_hw]
[<ffffffffa05174eb>] ath_hw_pll_work+0x5b/0xe0 [ath9k]
[<ffffffff810744fe>] process_one_work+0x11e/0x470
[<ffffffff8107530f>] worker_thread+0x15f/0x360
[<ffffffff810751b0>] ? manage_workers+0x230/0x230
[<ffffffff81079af3>] kthread+0x93/0xa0
[<ffffffff815fd3a4>] kernel_thread_helper+0x4/0x10
[<ffffffff81079a60>] ? kthread_freezable_should_stop+0x70/0x70
[<ffffffff815fd3a0>] ? gs_change+0x13/0x13
ensure that the PLL-WAR for AR9485/AR9340 is executed only if the STA is
associated (or) IBSS/AP mode had started beaconing. Ideally this WAR
is needed to recover from some rare beacon stuck during stress testing.
Before the STA is associated/IBSS had started beaconing, PLL4(0x1618c)
always seem to have zero even though we had configured PLL3(0x16188) to
query about PLL's locking status. When we keep on polling infinitely PLL4's
8th bit(ie check for PLL locking measurements is done), machine hangs
due to softlockup.
fixes https://bugzilla.redhat.com/show_bug.cgi?id=811142
Reported-by: Rolf Offermanns <rolf.offermanns@gmx.net>
Cc: stable@vger.kernel.org [3.0+]
Tested-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
debugfs or omapdss debug support is turned off, and fixes a suspend related
crash.
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Merge tag 'omapdss-for-3.5-rc2' of git://gitorious.org/linux-omap-dss2/linux
Pull omapdss build problem fix from Tomi Valkeinen:
"Small fixes for omapdss driver. Most importantly, fixes a build
problem when debugfs or omapdss debug support is turned off, and fixes
a suspend related crash."
This has apparently been annoying rmk for a while..
* tag 'omapdss-for-3.5-rc2' of git://gitorious.org/linux-omap-dss2/linux:
OMAPDSS: fix registration of DPI and SDI devices
OMAPDSS: DSI: Fix bug when calculating LP command interleaving parameters
OMAPDSS: fix bogus WARN_ON in dss_runtime_put()
OMAPDSS: Taal: fix compilation warning
OMAPDSS: fix build when DEBUG_FS or DSS_DEBUG_SUPPORT disabled
During the split to the auto-parser helper functions, the actual call
of init verbs was lost.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=43366
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Stop connection monitor poll during disassociation.
This clears the polling flags and if a scan was
deferred it will be run.
Without this fix, if a scan was deferred due to
connection monitoring while disassociation happens,
this scan blocks further scan requests until interface
down/up which causes problems connecting to another AP.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Otherwise, we might call the driver callback before
the interface was uploaded.
Solves the following warning:
WARNING: at net/mac80211/driver-ops.h:12 ieee80211_set_bitrate_mask+0xbc/0x18c [mac80211]()
wlan0: Failed check-sdata-in-driver check, flags: 0x0
Modules linked in: wlcore_sdio wl12xx wl18xx wlcore mac80211 cfg80211 [last unloaded: cfg80211]
[<c001b964>] (unwind_backtrace+0x0/0x12c) from [<c0495550>] (dump_stack+0x20/0x24)
[<c0495550>] (dump_stack+0x20/0x24) from [<c003ee28>] (warn_slowpath_common+0x5c/0x74)
[<c003ee28>] (warn_slowpath_common+0x5c/0x74) from [<c003eefc>] (warn_slowpath_fmt+0x40/0x48)
[<c003eefc>] (warn_slowpath_fmt+0x40/0x48) from [<bf5c1ad0>] (ieee80211_set_bitrate_mask+0xbc/0x18c [mac80211])
[<bf5c1ad0>] (ieee80211_set_bitrate_mask+0xbc/0x18c [mac80211]) from [<bf575960>] (nl80211_set_tx_bitrate_mask+0x350/0x358 [cfg80211])
[<bf575960>] (nl80211_set_tx_bitrate_mask+0x350/0x358 [cfg80211]) from [<c03e9e94>] (genl_rcv_msg+0x1a8/0x1e8)
[<c03e9e94>] (genl_rcv_msg+0x1a8/0x1e8) from [<c03e9164>] (netlink_rcv_skb+0x5c/0xc0)
[<c03e9164>] (netlink_rcv_skb+0x5c/0xc0) from [<c03e9ce0>] (genl_rcv+0x28/0x34)
[<c03e9ce0>] (genl_rcv+0x28/0x34) from [<c03e8e74>] (netlink_unicast+0x158/0x234)
[<c03e8e74>] (netlink_unicast+0x158/0x234) from [<c03e93e0>] (netlink_sendmsg+0x218/0x298)
[<c03e93e0>] (netlink_sendmsg+0x218/0x298) from [<c03b4e5c>] (sock_sendmsg+0xa4/0xc0)
[<c03b4e5c>] (sock_sendmsg+0xa4/0xc0) from [<c03b5af4>] (__sys_sendmsg+0x1d8/0x254)
[<c03b5af4>] (__sys_sendmsg+0x1d8/0x254) from [<c03b5ca8>] (sys_sendmsg+0x4c/0x70)
[<c03b5ca8>] (sys_sendmsg+0x4c/0x70) from [<c0013980>] (ret_fast_syscall+0x0/0x3c)
Note that calling the driver can also result
in undefined behaviour since it doesn't have
to deal with calls while down.
Signed-off-by: Eliad Peller <eliad@wizery.com>
[removed timestamps, added note - Johannes]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This flow can actually happen due to a corner case in
mac80211: the station is deleted before we get a chance
to reclaim all the packets in flight in AGG queue.
The tid_data for this station is zeroed, and we lose
the match with the Tx queue.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Since request_module_nowait() can't be backported
use request_module() instead -- we don't need the
asynchronous behaviour of request_module_nowait()
here since we're running in the firmware request
work struct.
Tested-by: Donald H Fry <donald.h.fry@intel.com>
Reviewed-by: Donald H Fry <donald.h.fry@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Due to commit 26a7ca9a71 ("iwlwifi: refactor EEPROM
reading/parsing") adding a new parameter, while commit
d2c8b15d0c ("iwlwifi: use correct supported firmware
for 6035 and 6000g2") added a new device structure we
need to add the parameter to the new device structure
to make 6035 device work.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
For AGG queues, we must match between the WiFi sequence
number and the TFD number. This is a HW (SCD) requirement.
This is a take two of my
iwlwifi: add debug in Tx path in AGG flow
This will allow us to catch bad cases in which the packets aren't in
the right place on the ring.
which disappeared during code move.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In fragmentation we don't update the write pointer of the
HW immediately. So we shouldn't modify the timer in that
case.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
CMD_SYNC is zero so the if (cmd->flags & CMD_SYNC) is never true and we
never check the assertion.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Since the queue gets stuck from time to time, we are trying
to get as much information as we can when this occurs.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When the driver is built into the kernel instead of a module
when the system boots it results in a panic. The order things are built in
results in their initialization order when built into the kernel. Wifi
has to be initialized before mvm or dvm.
Reviewed-by: Donald H Fry <donald.h.fry@intel.com>
Tested-by: Donald H Fry <donald.h.fry@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Brandon Misemer <brandon.misemer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Using the driver_data area in ieee80211_tx_info which
resides in the CB overrides the info->control field.
Add a comment to prevent mistakes.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This locking isn't needed. The only locking we need is when
we access prph registers but there is already a separate
lock for that.
Since we haven't returned from the mac80211's
IEEE80211_AMPDU_TX_OPERATIONAL ampdu_action, we cannot
receive any Tx frame for that sta / tid while enabling the
queue.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This is not needed, we just need to tell the SCD not to use
that queue. We will reconfigure that queue when we will use
it again.
Clean up a bit the code on the way.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Print some more info from the SCD's SRAM and dump the TRB
from the FH.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Change its name to better reflect this.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This macro gets the bufsize in bytes.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add locking to the dynamic loading code to prevent
corrupting the list if multiple device ever init at
the same time (which cannot happen for multiple PCI
devices, but could happen when different busses init
concurrently.)
Also remove a device from the list when it stops so
the list isn't left corrupted, including a fix from
Don to not crash when it was never added.
Reviewed-by: Donald H Fry <donald.h.fry@intel.com>
Tested-by: Donald H Fry <donald.h.fry@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Don Fry <donald.h.fry@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Conflicts:
MAINTAINERS
drivers/net/wireless/iwlwifi/pcie/trans.c
The iwlwifi conflict was resolved by keeping the code added
in 'net' that turns off the buggy chip feature.
The MAINTAINERS conflict was merely overlapping changes, one
change updated all the wireless web site URLs and the other
changed some GIT trees to be Johannes's instead of John's.
Signed-off-by: David S. Miller <davem@davemloft.net>
CROSS_COMPILE must be setup before using e.g. cc-option (and a few other
as-*, cc-*, ld-* macros), else they will check against the wrong compiler
when cross-compiling, and may invoke the cross compiler with wrong or
suboptimal compiler options.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: linux-sh@vger.kernel.org
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
sh-linux-gnu-ld:--defsym 'jiffies=jiffies_64': ignoring invalid character `'' in expression
For some reason ld has recently started complaining about the quotes, so just
get rid of them, we don't need them for anything anyways.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
'Get' commands should generally not require CAP_NET_ADMIN, with
the exception of those that expose internal state.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add dev_loopback_xmit() in order to deduplicate functions
ip_dev_loopback_xmit() (in net/ipv4/ip_output.c) and
ip6_dev_loopback_xmit() (in net/ipv6/ip6_output.c).
I was about to reinvent the wheel when I noticed that
ip_dev_loopback_xmit() and ip6_dev_loopback_xmit() do exactly what I
need and are not IP-only functions, but they were not available to reuse
elsewhere.
ip6_dev_loopback_xmit() does not have line "skb_dst_force(skb);", but I
understand that this is harmless, and should be in dev_loopback_xmit().
Signed-off-by: Michel Machado <michel@digirati.com.br>
CC: "David S. Miller" <davem@davemloft.net>
CC: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
CC: James Morris <jmorris@namei.org>
CC: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
CC: Patrick McHardy <kaber@trash.net>
CC: Eric Dumazet <edumazet@google.com>
CC: Jiri Pirko <jpirko@redhat.com>
CC: "Michał Mirosław" <mirq-linux@rere.qmqm.pl>
CC: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cloning all packets in input path have a significant cost.
Use skb_header_pointer()/skb_copy_bits() instead of pskb_may_pull() so
that recv_probe handlers (bond_3ad_lacpdu_recv / bond_arp_rcv /
rlb_arp_recv ) dont touch input skb.
bond_handle_frame() can avoid the skb_clone()/dev_kfree_skb()
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jay Vosburgh <fubar@us.ibm.com>
Cc: Andy Gospodarek <andy@greyhouse.net>
Cc: Jiri Bohac <jbohac@suse.cz>
Cc: Nicolas de Pesloüan <nicolas.2p.debian@free.fr>
Cc: Maciej Żenczykowski <maze@google.com>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The line below in intr_complete isn't needed,
memset(urb->transfer_buffer, 0, urb->transfer_buffer_length);
so just remove it.
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Remove declaration for intr_complete so that ctags may be happy to
decrease duplicated symbols, also decrease one line code.
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The flag of EVENT_DEV_WAKING is not used any more, so just remove it.
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
usb_device is parent device of usb_interface in the view of driver
model, so its reference count is always held during .probe/.disconnect
of usb_interface instance.
This patch just removes the unnecessay usb_get/put_dev.
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
usb_device is parent device of usb_interface in the view of driver
model, so its reference count is always held during .probe/.disconnect
of usb_interface instance.
This patch just removes the unnecessay usb_get/put_dev.
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
usb_device is parent device of usb_interface in the view of driver
model, so its reference count is always held during .probe/.disconnect
of usb_interface instance.
This patch just removes the unnecessay usb_get/put_dev.
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This kills off the special sh32/64 versions and adopts the generic
version. It should be possible to optimize this for SH-4A unaligned
loads, but this is a corner case that can be supported incrementally.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Commit 7025bec912 ("sh: Kill off dead UBC
headers.") skipped arch/sh/include/cpu-sh2a/cpu/ubc.h. Since nothing is
using that header either, kill it off too.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
The driver supports a maximum number of ports configurable at compile
time. Make sure the probe() method fails when registering a port that
exceeds the maximum instead of returning success without registering the
port.
This fixes a crash at system suspend time, when the driver tried to
suspend a non-registered port using the UART core.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
When probing fails, the driver must not try to cleanup resources that
have not been initialized. Fix this.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
In the transmit path of the bonding driver, skb->cb is used to
stash the skb->queue_mapping so that the bonding device can set its
own queue mapping. This value becomes corrupted since the skb->cb is
also used in __dev_xmit_skb.
When transmitting through bonding driver, bond_select_queue is
called from dev_queue_xmit. In bond_select_queue the original
skb->queue_mapping is copied into skb->cb (via bond_queue_mapping)
and skb->queue_mapping is overwritten with the bond driver queue.
Subsequently in dev_queue_xmit, __dev_xmit_skb is called which writes
the packet length into skb->cb, thereby overwriting the stashed
queue mappping. In bond_dev_queue_xmit (called from hard_start_xmit),
the queue mapping for the skb is set to the stashed value which is now
the skb length and hence is an invalid queue for the slave device.
If we want to save skb->queue_mapping into skb->cb[], best place is to
add a field in struct qdisc_skb_cb, to make sure it wont conflict with
other layers (eg : Qdiscc, Infiniband...)
This patchs also makes sure (struct qdisc_skb_cb)->data is aligned on 8
bytes :
netem qdisc for example assumes it can store an u64 in it, without
misalignment penalty.
Note : we only have 20 bytes left in (struct qdisc_skb_cb)->data[].
The largest user is CHOKe and it fills it.
Based on a previous patch from Tom Herbert.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Tom Herbert <therbert@google.com>
Cc: John Fastabend <john.r.fastabend@intel.com>
Cc: Roland Dreier <roland@kernel.org>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Routing of 127/8 is tradtionally forbidden, we consider
packets from that address block martian when routing and do
not process corresponding ARP requests.
This is a sane default but renders a huge address space
practically unuseable.
The RFC states that no address within the 127/8 block should
ever appear on any network anywhere but it does not forbid
the use of such addresses outside of the loopback device in
particular. For example to address a pool of virtual guests
behind a load balancer.
This patch adds a new interface option 'route_localnet'
enabling routing of the 127/8 address block and processing
of ARP requests on a specific interface.
Note that for the feature to work, the default local route
covering 127/8 dev lo needs to be removed.
Example:
$ sysctl -w net.ipv4.conf.eth0.route_localnet=1
$ ip route del 127.0.0.0/8 dev lo table local
$ ip addr add 127.1.0.1/16 dev eth0
$ ip route flush cache
V2: Fix invalid check to auto flush cache (thanks davem)
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If we modify primary via sysfs and it is not a valid slave,
we should record it for future use, and this behavior is the same with
bond_check_params().
Signed-off-by: Weiping Pan <wpan@redhat.com>
Acked-by: Nicolas de Pesloüan <nicolas.2p.debian@free.fr>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arend van Spriel