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Fun set of conflict resolutions here...
For the mac80211 stuff, these were fortunately just parallel
adds. Trivially resolved.
In drivers/net/phy/phy.c we had a bug fix in 'net' that moved the
function phy_disable_interrupts() earlier in the file, whilst in
'net-next' the phy_error() call from this function was removed.
In net/ipv4/xfrm4_policy.c, David Ahern's changes to remove the
'rt_table_id' member of rtable collided with a bug fix in 'net' that
added a new struct member "rt_mtu_locked" which needs to be copied
over here.
The mlxsw driver conflict consisted of net-next separating
the span code and definitions into separate files, whilst
a 'net' bug fix made some changes to that moved code.
The mlx5 infiniband conflict resolution was quite non-trivial,
the RDMA tree's merge commit was used as a guide here, and
here are their notes:
====================
Due to bug fixes found by the syzkaller bot and taken into the for-rc
branch after development for the 4.17 merge window had already started
being taken into the for-next branch, there were fairly non-trivial
merge issues that would need to be resolved between the for-rc branch
and the for-next branch. This merge resolves those conflicts and
provides a unified base upon which ongoing development for 4.17 can
be based.
Conflicts:
drivers/infiniband/hw/mlx5/main.c - Commit 42cea83f9524
(IB/mlx5: Fix cleanup order on unload) added to for-rc and
commit b5ca15ad7e61 (IB/mlx5: Add proper representors support)
add as part of the devel cycle both needed to modify the
init/de-init functions used by mlx5. To support the new
representors, the new functions added by the cleanup patch
needed to be made non-static, and the init/de-init list
added by the representors patch needed to be modified to
match the init/de-init list changes made by the cleanup
patch.
Updates:
drivers/infiniband/hw/mlx5/mlx5_ib.h - Update function
prototypes added by representors patch to reflect new function
names as changed by cleanup patch
drivers/infiniband/hw/mlx5/ib_rep.c - Update init/de-init
stage list to match new order from cleanup patch
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit 7b6ddeaf27ec ("mac80211: use QoS NDP for AP probing") added an
argument qos_ok to ieee80211_nullfunc_get to support QoS NDP. Despite
the claim in the commit log "Change all the drivers to *not* allow
QoS NDP for now, even though it looks like most of them should be OK
with that", this commit enables QoS NDP in response to beacons (see
change to mlme.c:ieee80211_send_nullfunc), causing ath9k_htc to lose
IP connectivity. See:
https://patchwork.kernel.org/patch/10241109/
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=891060
Introduce a hardware flag to allow such buggy drivers to override the
correct default behaviour of mac80211 of sending QoS NDP packets.
Signed-off-by: Ben Caradoc-Davies <ben@transient.nz>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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skb_copy_expand without __GFP_NOWARN already does a dump_stack
on OOM so these messages are redundant.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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All of the conflicts were cases of overlapping changes.
In net/core/devlink.c, we have to make care that the
resouce size_params have become a struct member rather
than a pointer to such an object.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Only works if the IV was stripped from packets. Create a smaller
variant of ieee80211_rx_h_amsdu, which bypasses checks already done
within the fast-rx context.
In order to do so, update cfg80211's ieee80211_data_to_8023_exthdr()
to take the offset between header and snap.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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As there is no support for updating an existing ADDBA session with
a peer, we decline the request (while keeping the session active).
However, in case that the timeout did not change, there is no need
to decline the request, so modify the code to reply with status success
in such a case (this is useful for interoperability with APs that send an
ADDBA request update without changing the timeout value).
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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When powersave is disabled for the interface, we can do fast-rx anyway.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
[fixed indentation on one line]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Fixes rx for 4-addr packets in AP mode. These may be used for setting
up a 4-addr link for stations that are allowed to do so.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Since we now have the convenient helper to do so, actually adjust the
TSQ pacing shift for packets going out over a WiFi interface. This
significantly improves throughput for locally-originated TCP
connections. The default pacing shift of 10 corresponds to ~1ms of
queued packet data. Adjusting this to a shift of 8 (i.e. ~4ms) improves
1-hop throughput for ath9k by a factor of 3, whereas increasing it more
has diminishing returns.
Achieved throughput for different values of sk_pacing_shift (average of
5 iterations of 10-sec netperf runs to a host on the other side of the
WiFi hop):
sk_pacing_shift 10: 43.21 Mbps (pre-patch)
sk_pacing_shift 9: 78.17 Mbps
sk_pacing_shift 8: 123.94 Mbps
sk_pacing_shift 7: 128.31 Mbps
Latency for competing flows increases from ~3 ms to ~10 ms with this
change. This is about the same magnitude of queueing latency induced by
flows that are not originated on the WiFi device itself (and so are not
limited by TSQ).
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
Johannes Berg says:
====================
Various fixes across the tree, the shortlog basically says it all:
cfg80211: fix cfg80211_beacon_dup
-> old bug in this code
cfg80211: clear wep keys after disconnection
-> certain ways of disconnecting left the keys
mac80211: round IEEE80211_TX_STATUS_HEADROOM up to multiple of 4
-> alignment issues with using 14 bytes
mac80211: Do not disconnect on invalid operating class
-> if the AP has a bogus operating class, let it be
mac80211: Fix sending ADDBA response for an ongoing session
-> don't send the same frame twice
cfg80211: use only 1Mbps for basic rates in mesh
-> interop issue with old versions of our code
mac80211_hwsim: don't use WQ_MEM_RECLAIM
-> it causes splats because it flushes work on a non-reclaim WQ
regulatory: add NUL to request alpha2
-> nla_put_string() issue from Kees
mac80211: mesh: fix wrong mesh TTL offset calculation
-> protocol issue
mac80211: fix a possible leak of station stats
-> error path might leak memory
mac80211: fix calling sleeping function in atomic context
-> percpu allocations need to be made with gfp flags
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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In multi channel scenarios, when disassociating from the AP before a
beacon was heard from the AP, it is not guaranteed that the virtual
interface is granted air time for the transmission of the
deauthentication frame. This in turn can lead to various issues as
the AP might never get the deauthentication frame.
To mitigate such possible issues, add a HW flag indicating that the
driver requires mac80211 to call the mgd_prep_tx() driver callback
to make sure that the virtual interface is granted immediate airtime
to be able to transmit the frame, in case that no beacon was heard
from the AP.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Extracting the TID from the QOS header is common enough
to justify helper.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Support getting the EOF bit value reported from hardware
and writing it out to radiotap.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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In case an ADDBA request is received while there is already
an ongoing BA sessions with the same parameters, i.e., update
flow, an ADBBA response with decline status was sent twice. Fix it.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Some APs include a non global operating class in their extended channel
switch information element. In such a case, as the operating class is not
known, mac80211 would decide to disconnect.
However the specification states that the operating class needs to be
taken from Annex E, but it does not specify from which table it should be
taken, so it is valid for an AP to use a non global operating class.
To avoid possibly unneeded disconnection, in such a case ignore the
operating class and assume that the current band is used, and if the
resulting channel and band configuration is invalid disconnect.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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sta_info_alloc can be called from atomic paths (such as RX path)
so we need to call pcpu_alloc with the correct gfp.
Fixes: c9c5962b56c1 ("mac80211: enable collecting station statistics per-CPU")
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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If sta_info_alloc fails after allocating the per CPU statistics,
they are not properly freed.
Fixes: c9c5962b56c1 ("mac80211: enable collecting station statistics per-CPU")
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This allows users to get ack signal strength of
last transmitted frame.
Signed-off-by: Venkateswara Naralasetty <vnaralas@codeaurora.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This patch provides support to get ack signal in probe client response
and in station info from user.
Signed-off-by: Venkateswara Naralasetty <vnaralas@codeaurora.org>
[squash in compilation fixes]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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The pointer hrd is being initialized with a value that is never read
and re-assigned a little later, hence the initialization is redundant
and can be removed.
Cleans up clang warning:
net/mac80211/tx.c:1924:24: warning: Value stored to 'hdr' during its
initialization is never read
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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gcc-8 warns about some obviously incorrect code:
net/mac80211/cfg.c: In function 'cfg80211_beacon_dup':
net/mac80211/cfg.c:2896:3: error: 'memcpy' source argument is the same as destination [-Werror=restrict]
From the context, I conclude that we want to copy from beacon into
new_beacon, as we do in the rest of the function.
Cc: stable@vger.kernel.org
Fixes: 73da7d5bab79 ("mac80211: add channel switch command and beacon callbacks")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This will add support to send an event to a userspace application
whenever station advertise its ht/vht opmode modification through
an action frame.
Signed-off-by: Tamizh chelvam <tamizhr@codeaurora.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Might help one figure out why aqm drivers may fail to transmit
frames sometimes.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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mesh TTL offset in Mesh Channel Switch Parameters element depends on
not only Secondary Channel Offset element, but also affected by
HT Control field and Wide Bandwidth Channel Switch element.
So use element structure to manipulate mesh channel swich param IE
after removing its constant attribution to correct the miscalculation.
Signed-off-by: Peter Oh <peter.oh@bowerswilkins.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Trivial fix removes unneeded semicolons after switch blocks.
Signed-off-by: Christopher Díaz Riveros <chrisadr@gentoo.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
We have things all over the place, no point listing them.
One thing is notable: I applied two patches and later
reverted them - we'll get back to that once all the driver
situation is sorted out.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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If there are multiple mesh stations with the same MAC address,
they will both get confused and start throwing warnings.
Obviously in this case nothing can actually work anyway, so just
drop frames that look like they're from ourselves early on.
Reported-by: Gui Iribarren <gui@altermundi.net>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Instead of calling ieee80211_recalc_txpower on monitor interfaces
directly, call it using the virtual monitor interface, if one exists.
In case of a single monitor interface given, reject setting TX power,
if no virtual monitor interface exists.
That being checked, don't warn in ieee80211_bss_info_change_notify,
after setting TX power on a monitor interface.
Fixes warning:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 2193 at net/mac80211/driver-ops.h:167
ieee80211_bss_info_change_notify+0x111/0x190 Modules linked in: uvcvideo
videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core
rndis_host cdc_ether usbnet mii tp_smapi(O) thinkpad_ec(O) ohci_hcd vboxpci(O)
vboxnetadp(O) vboxnetflt(O) v boxdrv(O) x86_pkg_temp_thermal kvm_intel kvm
irqbypass iwldvm iwlwifi ehci_pci ehci_hcd tpm_tis tpm_tis_core tpm CPU: 0
PID: 2193 Comm: iw Tainted: G O 4.12.12-gentoo #2 task:
ffff880186fd5cc0 task.stack: ffffc90001b54000 RIP:
0010:ieee80211_bss_info_change_notify+0x111/0x190 RSP: 0018:ffffc90001b57a10
EFLAGS: 00010246 RAX: 0000000000000006 RBX: ffff8801052ce840 RCX:
0000000000000064 RDX: 00000000fffffffc RSI: 0000000000040000 RDI:
ffff8801052ce840 RBP: ffffc90001b57a38 R08: 0000000000000062 R09:
0000000000000000 R10: ffff8802144b5000 R11: ffff880049dc4614 R12:
0000000000040000 R13: 0000000000000064 R14: ffff8802105f0760 R15:
ffffc90001b57b48 FS: 00007f92644b4580(0000) GS:ffff88021e200000(0000)
knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9263c109f0 CR3: 00000001df850000 CR4: 00000000000406f0
Call Trace:
ieee80211_recalc_txpower+0x33/0x40
ieee80211_set_tx_power+0x40/0x180
nl80211_set_wiphy+0x32e/0x950
Reported-by: Peter Große <pegro@friiks.de>
Signed-off-by: Peter Große <pegro@friiks.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This reverts commit e937b8da5a591f141fe41aa48a2e898df9888c95.
Turns out that a new driver (mt76) is coming in through
Kalle's tree, and will conflict with this. It also has some
conflicting requirements, so we'll revisit this later.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This reverts commit b0d52ad821843a6c5badebd80feef9f871904fa6.
We need to revert the TXQ scheduling API due to conflicts
with a new driver, and this depends on that API.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Three sets of overlapping changes, two in the packet scheduler
and one in the meson-gxl PHY driver.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Most callers of rhashtable_walk_start don't care about a resize event
which is indicated by a return value of -EAGAIN. So calls to
rhashtable_walk_start are wrapped wih code to ignore -EAGAIN. Something
like this is common:
ret = rhashtable_walk_start(rhiter);
if (ret && ret != -EAGAIN)
goto out;
Since zero and -EAGAIN are the only possible return values from the
function this check is pointless. The condition never evaluates to true.
This patch changes rhashtable_walk_start to return void. This simplifies
code for the callers that ignore -EAGAIN. For the few cases where the
caller cares about the resize event, particularly where the table can be
walked in mulitple parts for netlink or seq file dump, the function
rhashtable_walk_start_check has been added that returns -EAGAIN on a
resize event.
Signed-off-by: Tom Herbert <tom@quantonium.net>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This adds airtime accounting and scheduling to the mac80211 TXQ
scheduler. A new hardware flag, AIRTIME_ACCOUNTING, is added that
drivers can set if they support reporting airtime usage of
transmissions. When this flag is set, mac80211 will expect the actual
airtime usage to be reported in the tx_time and rx_time fields of the
respective status structs.
When airtime information is present, mac80211 will schedule TXQs
(through ieee80211_next_txq()) in a way that enforces airtime fairness
between active stations. This scheduling works the same way as the ath9k
in-driver airtime fairness scheduling.
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This adds an API to mac80211 to handle scheduling of TXQs and changes the
interface between driver and mac80211 for TXQ handling as follows:
- The wake_tx_queue callback interface no longer includes the TXQ. Instead,
the driver is expected to retrieve that from ieee80211_next_txq()
- Two new mac80211 functions are added: ieee80211_next_txq() and
ieee80211_schedule_txq(). The former returns the next TXQ that should be
scheduled, and is how the driver gets a queue to pull packets from. The
latter is called internally by mac80211 to start scheduling a queue, and
the driver is supposed to call it to re-schedule the TXQ after it is
finished pulling packets from it (unless the queue emptied).
The ath9k and ath10k drivers are changed to use the new API.
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Add a key flag to indicates that the device only needs
MIC space and not a real MIC.
In such cases, keep the MIC zeroed for ease of debug.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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While the change between 802.11-2012 and 802.11-2016 to move from
requiring APs to set the two top bits to now requiring them to be
cleared was apparently unintentional and will be fixed, clients
should either way assume that the top five bits are reserved and
ignore them.
Implement that in mac80211.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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In the ieee80211_setup_sdata() we check if the interface type is valid
and, if not, call BUG(). This should never happen, but if there is
something wrong with the code, it will not be caught until the bug
happens when an interface is being set up. Calling BUG() is too
extreme for this and a WARN_ON() would be better used instead. Change
that.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Currently the restart flow enables RX back, and then proceeds
to tear down RX and TX aggregations.
The TX aggregation tear down calls synchronize_net(), which
waits for packet receiving to be done.
This is done for every session, while RX processing is already
active, and in some reproductions it takes up to 3 seconds.
Add a call once in the restart_work, before we have traffic
active again, and remove the subsequent calls when tearing
down the aggregation.
This requires to move down the code that turns off the
reconfig flag in order to be able to test it in
_ieee80211_stop_tx_ba_session().
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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The 2016 version of the spec is more generic about when the
AP should update the power management state of the peer:
the AP shall update the state based on any management or
data frames. This means that even non-bufferable management
frames should be looked at to update to maintain the power
management state of the peer.
This can avoid problematic cases for example if a station
disappears while being asleep and then re-appears. The AP
would remember it as in power save, but the Authentication
frame couldn't be used to set the peer as awake again.
Note that this issues wasn't really critical since at some
point (after the association) we would have removed the
station and created another one with all the states cleared.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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The function is only used with the file, so make it static.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Allow drivers to set the buffer station extended capability
for TDLS links, with a new hardware flag indicating this.
Signed-off-by: Yingying Tang <yintang@qti.qualcomm.com>
[change commit log/documentation wording]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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There's no need to re-lookup the data structures now that
we actually get them immediately with from_timer(), just
avoid that. The struct has to be valid anyway, otherwise
the timer object itself would no longer be valid, and we
can't have a different version of the struct since only a
single session per TID is permitted.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.
Notice that in some cases I replaced "fall through on else" and
"otherwise fall through" comments with just a "fall through" comment,
which is what GCC is expecting to find.
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Due to overlap between
commit 1281103770e9 ("mac80211: Simplify locking in ieee80211_sta_tear_down_BA_sessions()")
and the way that Luca modified
commit 72e2c3438ba3 ("mac80211: tear down RX aggregations first")
when sending it upstream from Intel's internal tree, we get
the following warning:
WARNING: CPU: 0 PID: 5472 at net/mac80211/agg-tx.c:315 ___ieee80211_stop_tx_ba_session+0x158/0x1f0
since there's no appropriate locking around the call to
___ieee80211_stop_tx_ba_session; Sara's original just had
a call to the locked __ieee80211_stop_tx_ba_session (one
less underscore) but it looks like Luca modified both of
the calls when fixing it up for upstream, leading to the
problem at hand.
Move the locking appropriately to fix this problem.
Reported-by: Kalle Valo <kvalo@codeaurora.org>
Reported-by: Pavel Machek <pavel@ucw.cz>
Tested-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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When doing HW restart we tear down aggregations.
Since at this point we are not TX'ing any aggregation, while
the peer is still sending RX aggregation over the air, it will
make sense to tear down the RX aggregations first.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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The previous path metric update from RANN frame has not considered
the own link metric toward the transmitting mesh STA. Fix this.
Reported-by: Michael65535
Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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