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Clean up the CSA handling code by moving some
of it out of the if and using a C99 initializer
for the struct passed to the driver method.
While at it, also add a comment that we should
wait for a beacon after switching the channel.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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There's no need to copy the BSSID just to print
it, remove the unnecessary variable.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Support getting A-MPDU status information from the
drivers and reporting it to userspace via radiotap
in the standard fields.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Define the A-MPDU status field in radiotap, also
update the radiotap parser for it and the MCS field
that was apparently missed last time.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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In IBSS it is possible that the supported rates set for a station changes over
time (e.g. it gets first initialised as an empty set because of no available
information about rates and updated later). In this case the driver has to be
notified about the change in order to update its internal table accordingly (if
needed).
This behaviour is needed by all those drivers that handle rc internally but
leave stations management to mac80211
Reported-by: Gui Iribarren <gui@altermundi.net>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
[Johannes - add docs, validate IBSS mode only, fix compilation]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Use skb_queue_walk_safe instead, and fix a few issues:
- didn't free old skbs on moving
- didn't react to failed skb alloc
- needlessly held a local pointer to the destination frame queue
- didn't check destination queue length before adding skb
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Since all we really want is just to iterate over all skbs, do just that
and avoid (de)queueing to a clusmy tmpq.
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This could take a while (100ms+) and may delay sending assoc resp
in AP mode with WPS or P2P GO (as setting the probe resp takes place
there). We've encountered situations where the delay was big enough
to cause connection problems with devices like Galaxy Nexus.
Switch to using call_rcu with a free handler.
[Arik - rework to use plain buffer and instead of skb]
Signed-off-by: Eyal Shapira <eyal@wizery.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Although adding an IE is almost guaranteed to succeed since we already
accounted for its length while allocating the skb, we should still free
the skb in case of failure.
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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It doesn't make a lot of sense to wait for an ack in response to a
peering close frame since either peer in this exchange could be going
down.
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This function was only used by mesh, and not really needed since any
interface-specific cleanup already happens in the netdev handlers.
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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It is not necessary to stop the mesh beacon in the mac80211 ndo_stop
handler, since cfg80211 has already left the mesh on NETDEV_GOING_DOWN
notification.
Also some improvements to ieee80211_stop_mesh():
- flush mpath entries.
- flush sta entries per-sdata so we don't remove entries belonging to
other vifs on the same hw.
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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When associating anew, the old station MLME flags should
be cleared. The only exception is the 40 MHz disable
flag as it might have been set while the channel was set
in a previous authentication attempt so it needs to be
kept intact.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Instead of memset().
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Enable the carrier on WDS type interfaces only
after having added the station entry for the
WDS peer so outgoing frames will find it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Instead of assuming the carrier is on all
the time in mesh manage it with joining
and leaving the mesh.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Since we only need the band, remove the channel
pointer from struct ieee80211_tx_data and also
assign it properly, depending on context, to the
correct operating or current channel.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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When sending probe requests, e.g. during software scanning,
these will go out on the *current* channel, so their IEs
need to be built from the current channel. At other times,
e.g. for beacons or probe request templates, the IEs will
be used on the *operating* channel and using the current
channel instead might result in errors.
Add the appropriate parameters to respect the difference.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Using hw.conf.channel is wrong as it could be the
temporary channel if any function like the beacon
get function is called while scanning or during
other temporary out-of-channel activities.
Use oper_channel instead.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Using hw.conf.channel is wrong as it could be the
temporary channel if any function like the beacon
get function is called while scanning or during
other temporary out-of-channel activities.
Use oper_channel instead.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Using hw.conf.channel is wrong as it could be the
temporary channel if any function like the beacon
get function is called while scanning or during
other temporary out-of-channel activities.
Use oper_channel instead.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Using hw.conf.channel is wrong as it could be the
temporary channel if any function like the beacon
get function is called while scanning or during
other temporary out-of-channel activities.
Use oper_channel instead.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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There's no need to set up the channel during auth
and again during assoc, just do it once. Currently
this doesn't result in any changes since calling
hw_config() with an unchanged channel will return
early, but with the channel context work this has
an impact on channel context assignment.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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In ieee80211_prep_connection(), the station (if not NULL)
is the new station (representing the AP) that needs to be
added. Rename the variable to "new_sta" to clarify this.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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If HT/VHT isn't supported by us we shouldn't print
a message that we disabled it, do that only if the
AP didn't support WMM and we therefore disable it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Remove the control.sta pointer from ieee80211_tx_info to free up
sufficient space in the TX skb control buffer for the upcoming
Transmit Power Control (TPC).
Instead, the pointer is now on the stack in a new control struct
that is passed as a function parameter to the drivers' tx method.
Signed-off-by: Thomas Huehn <thomas@net.t-labs.tu-berlin.de>
Signed-off-by: Alina Friedrichsen <x-alina@gmx.net>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
[reworded commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Currently, ps mode is indicated per device (rather than
per interface), which doesn't make a lot of sense.
Moreover, there are subtle bugs caused by the inability
to indicate ps change along with other changes
(e.g. when the AP deauth us, we'd like to indicate
CHANGED_PS | CHANGED_ASSOC, as changing PS before
notifying about disassociation will result in null-packets
being sent (if IEEE80211_HW_SUPPORTS_DYNAMIC_PS) while
the sta is already disconnected.)
Keep the current per-device notifications, and add
parallel per-vif notifications.
In order to keep it simple, the per-device ps and
the per-vif ps are orthogonal - the per-vif ps
configuration is determined only by the user
configuration (enable/disable) and the connection
state, and is not affected by other vifs state and
(temporary) dynamic_ps/offchannel operations
(unlike per-device ps).
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Remove ah-hoc IE search code found in the ieee80211_bss_get_ie()
and use cfg80211_find_ie() instead.
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This doesn't make any sense since we are expected to be on
the medium or at least to Tx only when we are on the right
channel and the AP/GO can hear us.
Move the call to mgd_prepare_tx() for deauth to be only
done in case we're sending a deauth while not associated.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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If the HW is monitoring connection loss (as advertised
by IEEE80211_HW_CONNECTION_MONITOR) but not filtering
beacons (IEEE80211_VIF_BEACON_FILTER) then mac80211 will
still start the beacon loss timer and if a few beacons
are lost, e.g. due to scanning, drop the connection.
If the hardware doesn't advertise connection monitoring,
then it won't drop the connection right away but probe
the AP, which is intended, but due to the logic in the
timer when connection monitoring is done it assumes the
connection was actually lost.
Fix this problem by not starting the timer when the HW
does connection monitoring.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Insert VHT IEs into association frames to allow
mac80211 to connect as a VHT client.
Signed-off-by: Mahesh Palivela <maheshp@posedge.com>
[clarify commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Rate control is re-initialized whenever a beacon from a mesh
peer received, breaking the algorithms and resulting in low
performance. Return early from mesh_peer_init if we already
established a link with this peer to avoid this.
Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
[clarify commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds
Pull LED subsystem update from Bryan Wu.
* 'for-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds: (50 commits)
leds-lp8788: forgotten unlock at lp8788_led_work
LEDS: propagate error codes in blinkm_detect()
LEDS: memory leak in blinkm_led_common_set()
leds: add new lp8788 led driver
LEDS: add BlinkM RGB LED driver, documentation and update MAINTAINERS
leds: max8997: Simplify max8997_led_set_mode implementation
leds/leds-s3c24xx: use devm_gpio_request
leds: convert Network Space v2 LED driver to devm_kzalloc() and cleanup error exit path
leds: convert DAC124S085 LED driver to devm_kzalloc()
leds: convert LM3530 LED driver to devm_kzalloc() and cleanup error exit path
leds: convert TCA6507 LED driver to devm_kzalloc()
leds: convert Freescale MC13783 LED driver to devm_kzalloc() and cleanup error exit path
leds: convert ADP5520 LED driver to devm_kzalloc() and cleanup error exit path
leds: convert PCA955x LED driver to devm_kzalloc() and cleanup error exit path
leds: convert Sun Fire LED driver to devm_kzalloc() and cleanup error exit path
leds: convert PCA9532 LED driver to devm_kzalloc()
leds: convert LT3593 LED driver to devm_kzalloc()
leds: convert Renesas TPU LED driver to devm_kzalloc() and cleanup error exit path
leds: convert LP5523 LED driver to devm_kzalloc() and cleanup error exit path
leds: convert PCA9633 LED driver to devm_kzalloc()
...
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Pull networking updates and fixes from David Miller:
1) Reinstate the no-ref optimization for input route lookups in ipv4 to
fix some routing cache removal perf regressions.
2) Make TCP socket pre-demux work on ipv6 side too, from Eric Dumazet.
3) Get RX hash value from correct place in be2net driver, from
Sarveshwar Bandi.
4) Validation of FIB cached routes missing critical check, from Eric
Dumazet.
5) EEH support in mlx4 driver, from Kleber Sacilotto de Souza.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (23 commits)
ipv6: Early TCP socket demux
ipv4: Fix input route performance regression.
pch_gbe: vlan skb len fix
pch_gbe: add extra clean tx
pch_gbe: fix transmit watchdog timeout
ixgbe: fix panic while dumping packets on Tx hang with IOMMU
be2net: Fix to parse RSS hash from Receive completions correctly.
net/mlx4_en: Limit the RFS filter IDs to be < RPS_NO_FILTER
hyperv: Add error handling to rndis_filter_device_add()
hyperv: Add a check for ring_size value
ipv4: rt_cache_valid must check expired routes
net/pch_gpe: Cannot disable ethernet autonegation
qeth: repair crash in qeth_l3_vlan_rx_kill_vid()
netiucv: cleanup attribute usage
net: wiznet add missing HAS_IOMEM dependency
be2net: Missing byteswap in be_get_fw_log_level causes oops on PowerPC
mlx4: Add support for EEH error recovery
cdc-ncm: tag Ericsson WWAN devices (eg F5521gw) with FLAG_WWAN
wanmain: comparing array with NULL
caif: fix NULL pointer check
...
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This is the IPv6 missing bits for infrastructure added in commit
41063e9dd1195 (ipv4: Early TCP socket demux.)
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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With the routing cache removal we lost the "noref" code paths on
input, and this can kill some routing workloads.
Reinstate the noref path when we hit a cached route in the FIB
nexthops.
With help from Eric Dumazet.
Reported-by: Alexander Duyck <alexander.duyck@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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commit d2d68ba9fe8 (ipv4: Cache input routes in fib_info nexthops.)
introduced rt_cache_valid() helper. It unfortunately doesn't check if
route is expired before caching it.
I noticed sk_setup_caps() was constantly called on a tcp workload.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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gcc really should warn about these !
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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1) Remove a non needed pskb_may_pull() in tcp_v4_early_demux()
and fix a potential bug if skb->head was reallocated
(iph & th pointers were not reloaded)
TCP stack will pull/check headers anyway.
2) must reload iph in ip_rcv_finish() after early_demux()
call since skb->head might have changed.
3) skb->dev->ifindex can be now replaced by skb->skb_iif
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull trivial tree from Jiri Kosina:
"Trivial updates all over the place as usual."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (29 commits)
Fix typo in include/linux/clk.h .
pci: hotplug: Fix typo in pci
iommu: Fix typo in iommu
video: Fix typo in drivers/video
Documentation: Add newline at end-of-file to files lacking one
arm,unicore32: Remove obsolete "select MISC_DEVICES"
module.c: spelling s/postition/position/g
cpufreq: Fix typo in cpufreq driver
trivial: typo in comment in mksysmap
mach-omap2: Fix typo in debug message and comment
scsi: aha152x: Fix sparse warning and make printing pointer address more portable.
Change email address for Steve Glendinning
Btrfs: fix typo in convert_extent_bit
via: Remove bogus if check
netprio_cgroup.c: fix comment typo
backlight: fix memory leak on obscure error path
Documentation: asus-laptop.txt references an obsolete Kconfig item
Documentation: ManagementStyle: fixed typo
mm/vmscan: cleanup comment error in balance_pgdat
mm: cleanup on the comments of zone_reclaim_stat
...
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Pull networking changes from David S Miller:
1) Remove the ipv4 routing cache. Now lookups go directly into the FIB
trie and use prebuilt routes cached there.
No more garbage collection, no more rDOS attacks on the routing
cache. Instead we now get predictable and consistent performance,
no matter what the pattern of traffic we service.
This has been almost 2 years in the making. Special thanks to
Julian Anastasov, Eric Dumazet, Steffen Klassert, and others who
have helped along the way.
I'm sure that with a change of this magnitude there will be some
kind of fallout, but such things ought the be simple to fix at this
point. Luckily I'm not European so I'll be around all of August to
fix things :-)
The major stages of this work here are each fronted by a forced
merge commit whose commit message contains a top-level description
of the motivations and implementation issues.
2) Pre-demux of established ipv4 TCP sockets, saves a route demux on
input.
3) TCP SYN/ACK performance tweaks from Eric Dumazet.
4) Add namespace support for netfilter L4 conntrack helpers, from Gao
Feng.
5) Add config mechanism for Energy Efficient Ethernet to ethtool, from
Yuval Mintz.
6) Remove quadratic behavior from /proc/net/unix, from Eric Dumazet.
7) Support for connection tracker helpers in userspace, from Pablo
Neira Ayuso.
8) Allow userspace driven TX load balancing functions in TEAM driver,
from Jiri Pirko.
9) Kill off NLMSG_PUT and RTA_PUT macros, more gross stuff with
embedded gotos.
10) TCP Small Queues, essentially minimize the amount of TCP data queued
up in the packet scheduler layer. Whereas the existing BQL (Byte
Queue Limits) limits the pkt_sched --> netdevice queuing levels,
this controls the TCP --> pkt_sched queueing levels.
From Eric Dumazet.
11) Reduce the number of get_page/put_page ops done on SKB fragments,
from Alexander Duyck.
12) Implement protection against blind resets in TCP (RFC 5961), from
Eric Dumazet.
13) Support the client side of TCP Fast Open, basically the ability to
send data in the SYN exchange, from Yuchung Cheng.
Basically, the sender queues up data with a sendmsg() call using
MSG_FASTOPEN, then they do the connect() which emits the queued up
fastopen data.
14) Avoid all the problems we get into in TCP when timers or PMTU events
hit a locked socket. The TCP Small Queues changes added a
tcp_release_cb() that allows us to queue work up to the
release_sock() caller, and that's what we use here too. From Eric
Dumazet.
15) Zero copy on TX support for TUN driver, from Michael S. Tsirkin.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1870 commits)
genetlink: define lockdep_genl_is_held() when CONFIG_LOCKDEP
r8169: revert "add byte queue limit support".
ipv4: Change rt->rt_iif encoding.
net: Make skb->skb_iif always track skb->dev
ipv4: Prepare for change of rt->rt_iif encoding.
ipv4: Remove all RTCF_DIRECTSRC handliing.
ipv4: Really ignore ICMP address requests/replies.
decnet: Don't set RTCF_DIRECTSRC.
net/ipv4/ip_vti.c: Fix __rcu warnings detected by sparse.
ipv4: Remove redundant assignment
rds: set correct msg_namelen
openvswitch: potential NULL deref in sample()
tcp: dont drop MTU reduction indications
bnx2x: Add new 57840 device IDs
tcp: avoid oops in tcp_metrics and reset tcpm_stamp
niu: Change niu_rbr_fill() to use unlikely() to check niu_rbr_add_page() return value
niu: Fix to check for dma mapping errors.
net: Fix references to out-of-scope variables in put_cmsg_compat()
net: ethernet: davinci_emac: add pm_runtime support
net: ethernet: davinci_emac: Remove unnecessary #include
...
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lockdep_is_held() is defined when CONFIG_LOCKDEP, not CONFIG_PROVE_LOCKING.
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jesse Gross <jesse@nicira.com>
Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Rename leds external interface led_brightness_set() to led_set_brightness().
This is the second phase of the change to reduce confusion between the
leds internal and external interfaces that set brightness. With this change,
now the external interface is led_set_brightness(). The first phase renamed
the internal interface led_set_brightness() to __led_set_brightness().
There are no changes to the interface implementations.
Signed-off-by: Shuah Khan <shuahkhan@gmail.com>
Signed-off-by: Bryan Wu <bryan.wu@canonical.com>
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On input packet processing, rt->rt_iif will be zero if we should
use skb->dev->ifindex.
Since we access rt->rt_iif consistently via inet_iif(), that is
the only spot whose interpretation have to adjust.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Make it follow device decapsulation, from things such as VLAN and
bonding.
The stuff that actually cares about pre-demuxed device pointers, is
handled by the "orig_dev" variable in __netif_receive_skb(). And
the only consumer of that is the po->origdev feature of AF_PACKET
sockets.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Use inet_iif() consistently, and for TCP record the input interface of
cached RX dst in inet sock.
rt->rt_iif is going to be encoded differently, so that we can
legitimately cache input routes in the FIB info more aggressively.
When the input interface is "use SKB device index" the rt->rt_iif will
be set to zero.
This forces us to move the TCP RX dst cache installation into the ipv4
specific code, and as well it should since doing the route caching for
ipv6 is pointless at the moment since it is not inspected in the ipv6
input paths yet.
Also, remove the unlikely on dst->obsolete, all ipv4 dsts have
obsolete set to a non-zero value to force invocation of the check
callback.
Signed-off-by: David S. Miller <davem@davemloft.net>
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The last and final kernel user, ICMP address replies,
has been removed.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Alexey removed kernel side support for requests, and the
only thing we do for replies is log a message if something
doesn't look right.
As Alexey's comment indicates, this belongs in userspace (if
anywhere), and thus we can safely just get rid of this code.
Signed-off-by: David S. Miller <davem@davemloft.net>
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It's an ipv4 defined route flag, and only ipv4 uses it.
Signed-off-by: David S. Miller <davem@davemloft.net>
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With CONFIG_SPARSE_RCU_POINTER=y sparse identified references which did not
specificy __rcu in ip_vti.c
Signed-off-by: Saurabh Mohan <saurabh.mohan@vyatta.com>
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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