The help text refers to IBM instead of Apple, presumably because it was
copied from the former.
Fixes: 8fb6b09081 ("bmac/mace/macmace/mac89x0/cs89x0: Move the Macintosh (Apple) drivers")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
The help text refers to Western Digital instead of National
Semiconductor 8390, presumably because it was copied from the former.
Fixes: 644570b830 ("8390: Move the 8390 related drivers")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
This variant of netif_napi_add() should be used from drivers
using NAPI to exclusively poll a TX queue.
Signed-off-by: Frode Isaksen <fisaksen@baylibre.com>
Tested-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When permanent entries were introduced by the commit below, they were
exempt from timing out and thus igmp leave wouldn't affect them unless
fast leave was enabled on the port which was added before permanent
entries existed. It shouldn't matter if fast leave is enabled or not
if the user added a permanent entry it shouldn't be deleted on igmp
leave.
Before:
$ echo 1 > /sys/class/net/eth4/brport/multicast_fast_leave
$ bridge mdb add dev br0 port eth4 grp 229.1.1.1 permanent
$ bridge mdb show
dev br0 port eth4 grp 229.1.1.1 permanent
< join and leave 229.1.1.1 on eth4 >
$ bridge mdb show
$
After:
$ echo 1 > /sys/class/net/eth4/brport/multicast_fast_leave
$ bridge mdb add dev br0 port eth4 grp 229.1.1.1 permanent
$ bridge mdb show
dev br0 port eth4 grp 229.1.1.1 permanent
< join and leave 229.1.1.1 on eth4 >
$ bridge mdb show
dev br0 port eth4 grp 229.1.1.1 permanent
Fixes: ccb1c31a7a ("bridge: add flags to distinguish permanent mdb entires")
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In phy_led_trigger_change_speed(), there is an if statement on line 48
to check whether phy->last_triggered is NULL:
if (!phy->last_triggered)
When phy->last_triggered is NULL, it is used on line 52:
led_trigger_event(&phy->last_triggered->trigger, LED_OFF);
Thus, a possible null-pointer dereference may occur.
To fix this bug, led_trigger_event(&phy->last_triggered->trigger,
LED_OFF) is called when phy->last_triggered is not NULL.
This bug is found by a static analysis tool STCheck written by
the OSLAB group in Tsinghua University.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Build bot reports some recent TLS tests are failing
with CONFIG_TLS=n. Correct the expected return code
and skip TLS installation if not supported.
Tested with CONFIG_TLS=n and CONFIG_TLS=m.
Reported-by: kernel test robot <rong.a.chen@intel.com>
Fixes: cf32526c88 ("selftests/tls: add a test for ULP but no keys")
Fixes: 65d41fb317 ("selftests/tls: add a bidirectional test")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Since linux 4.9 it is not possible to use buffers on the stack for DMA transfers.
During usb probe the driver crashes with "transfer buffer is on stack" message.
This fix k-allocates a buffer to be used on "read_reg_atomic", which is a macro
that calls "usb_control_msg" under the hood.
Kernel 4.19 backtrace:
usb_hcd_submit_urb+0x3e5/0x900
? sched_clock+0x9/0x10
? log_store+0x203/0x270
? get_random_u32+0x6f/0x90
? cache_alloc_refill+0x784/0x8a0
usb_submit_urb+0x3b4/0x550
usb_start_wait_urb+0x4e/0xd0
usb_control_msg+0xb8/0x120
hfcsusb_probe+0x6bc/0xb40 [hfcsusb]
usb_probe_interface+0xc2/0x260
really_probe+0x176/0x280
driver_probe_device+0x49/0x130
__driver_attach+0xa9/0xb0
? driver_probe_device+0x130/0x130
bus_for_each_dev+0x5a/0x90
driver_attach+0x14/0x20
? driver_probe_device+0x130/0x130
bus_add_driver+0x157/0x1e0
driver_register+0x51/0xe0
usb_register_driver+0x5d/0x120
? 0xf81ed000
hfcsusb_drv_init+0x17/0x1000 [hfcsusb]
do_one_initcall+0x44/0x190
? free_unref_page_commit+0x6a/0xd0
do_init_module+0x46/0x1c0
load_module+0x1dc1/0x2400
sys_init_module+0xed/0x120
do_fast_syscall_32+0x7a/0x200
entry_SYSENTER_32+0x6b/0xbe
Signed-off-by: Juliana Rodrigueiro <juliana.rodrigueiro@intra2net.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The whole block is protected by "if NET_VENDOR_MEDIATEK", so there is
no need for individual driver config symbols to duplicate this
dependency.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
* revert NETIF_F_LLTX usage as it caused problems
* avoid warning on WMM parameters from AP that are too short
* fix possible null-ptr dereference in hwsim
* fix interface combinations with 4-addr and crypto control
-----BEGIN PGP SIGNATURE-----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=rE1e
-----END PGP SIGNATURE-----
Merge tag 'mac80211-for-davem-2019-07-31' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
Johannes Berg says:
====================
Just a few fixes:
* revert NETIF_F_LLTX usage as it caused problems
* avoid warning on WMM parameters from AP that are too short
* fix possible null-ptr dereference in hwsim
* fix interface combinations with 4-addr and crypto control
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Pablo Neira Ayuso says:
====================
netfilter fixes for net
The following patchset contains Netfilter fixes for your net tree:
1) memleak in ebtables from the error path for the 32/64 compat layer,
from Florian Westphal.
2) Fix inverted meta ifname/ifidx matching when no interface is set
on either from the input/output path, from Phil Sutter.
3) Remove goto label in nft_meta_bridge, also from Phil.
4) Missing include guard in xt_connlabel, from Masahiro Yamada.
5) Two patch to fix ipset destination MAC matching coming from
Stephano Brivio, via Jozsef Kadlecsik.
6) Fix set rename and listing concurrency problem, from Shijie Luo.
Patch also coming via Jozsef Kadlecsik.
7) ebtables 32/64 compat missing base chain policy in rule count,
from Florian Westphal.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
There is no need to use GFP_ATOMIC here, GFP_KERNEL should be enough.
The 'kcalloc()' just a few lines above, already uses GFP_KERNEL.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
There is no good reason to use GFP_ATOMIC here. Other memory allocations
are performed with GFP_KERNEL (see other 'dma_alloc_coherent()' below and
'kzalloc()' in 'et131x_rx_dma_memory_alloc()')
Use GFP_KERNEL which should be enough.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fixes: 6e43650cee ("add maintainer for network drop monitor kernel service")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel says:
====================
mlxsw: Two small fixes
Patch #1 from Jiri fixes the error path of the module initialization
function. Found during manual code inspection.
Patch #2 from Petr further reduces the default shared buffer pool sizes
in order to work around a problem that was originally described in
commit e891ce1dd2 ("mlxsw: spectrum_buffers: Reduce pool size on
Spectrum-2").
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
In commit e891ce1dd2 ("mlxsw: spectrum_buffers: Reduce pool size on
Spectrum-2"), pool size was reduced to mitigate a problem in port buffer
usage of ports split four ways. It turns out that this work around does not
solve the issue, and a further reduction is required.
Thus reduce the size of pool 0 by another 2.7 MiB, and round down to the
whole number of cells.
Fixes: e891ce1dd2 ("mlxsw: spectrum_buffers: Reduce pool size on Spectrum-2")
Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In case of sp2 pci driver registration fail, fix the error path to
start with sp1 pci driver unregister.
Fixes: c3ab435466 ("mlxsw: spectrum: Extend to support Spectrum-2 ASIC")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Notably:
* fix use-after-free issues
* fix DMA mapping API usage errors
* fix frame drop occurring due to reorder buffer handling in
RSS in certain conditions
* fix rate scale locking issues
* disable TX A-MSDU on older NICs as it causes problems and was
never supposed to be supported
* new PCI IDs
* GEO_TX_POWER_LIMIT API issue that many people were hitting
-----BEGIN PGP SIGNATURE-----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=7W8I
-----END PGP SIGNATURE-----
Merge tag 'iwlwifi-fixes-for-kvalo-2019-07-30' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-fixes
We have a lot of fixes, most of them are also applicable to stable.
Notably:
* fix use-after-free issues
* fix DMA mapping API usage errors
* fix frame drop occurring due to reorder buffer handling in
RSS in certain conditions
* fix rate scale locking issues
* disable TX A-MSDU on older NICs as it causes problems and was
never supposed to be supported
* new PCI IDs
* GEO_TX_POWER_LIMIT API issue that many people were hitting
Set phy device advertising to enable MAC flow control.
Signed-off-by: Xiaofei Shen <xiaofeis@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Support for handling the PPPOEIOCSFWD ioctl in compat mode was added in
linux-2.5.69 along with hundreds of other commands, but was always broken
sincen only the structure is compatible, but the command number is not,
due to the size being sizeof(size_t), or at first sizeof(sizeof((struct
sockaddr_pppox)), which is different on 64-bit architectures.
Guillaume Nault adds:
And the implementation was broken until 2016 (see 29e73269aa ("pppoe:
fix reference counting in PPPoE proxy")), and nobody ever noticed. I
should probably have removed this ioctl entirely instead of fixing it.
Clearly, it has never been used.
Fix it by adding a compat_ioctl handler for all pppoe variants that
translates the command number and then calls the regular ioctl function.
All other ioctl commands handled by pppoe are compatible between 32-bit
and 64-bit, and require compat_ptr() conversion.
This should apply to all stable kernels.
Acked-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
-----BEGIN PGP SIGNATURE-----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=+jjQ
-----END PGP SIGNATURE-----
Merge tag 'rxrpc-fixes-20190730' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
David Howells says:
====================
Here are a couple of fixes for rxrpc:
(1) Fix a potential deadlock in the peer keepalive dispatcher.
(2) Fix a missing notification when a UDP sendmsg error occurs in rxrpc.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
If PHYLIB is not set, build enetc will fails:
drivers/net/ethernet/freescale/enetc/enetc.o: In function `enetc_open':
enetc.c: undefined reference to `phy_disconnect'
enetc.c: undefined reference to `phy_start'
drivers/net/ethernet/freescale/enetc/enetc.o: In function `enetc_close':
enetc.c: undefined reference to `phy_stop'
enetc.c: undefined reference to `phy_disconnect'
drivers/net/ethernet/freescale/enetc/enetc_ethtool.o: undefined reference to `phy_ethtool_get_link_ksettings'
drivers/net/ethernet/freescale/enetc/enetc_ethtool.o: undefined reference to `phy_ethtool_set_link_ksettings'
drivers/net/ethernet/freescale/enetc/enetc_mdio.o: In function `enetc_mdio_probe':
enetc_mdio.c: undefined reference to `mdiobus_alloc_size'
enetc_mdio.c: undefined reference to `mdiobus_free'
Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: d4fd0404c1 ("enetc: Introduce basic PF and VF ENETC ethernet drivers")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
With recent changes that introduced support for Page Pool in stmmac, Jon
reported that NFS boot was no longer working on an ARM64 based platform
that had the IP behind an IOMMU.
As Page Pool API does not guarantee DMA syncing because of the use of
DMA_ATTR_SKIP_CPU_SYNC flag, we have to explicit sync the whole buffer upon
re-allocation because we are always re-using same pages.
In fact, ARM64 code invalidates the DMA area upon two situations [1]:
- sync_single_for_cpu(): Invalidates if direction != DMA_TO_DEVICE
- sync_single_for_device(): Invalidates if direction == DMA_FROM_DEVICE
So, as we must invalidate both the current RX buffer and the newly allocated
buffer we propose this fix.
[1] arch/arm64/mm/cache.S
Reported-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Fixes: 2af6106ae9 ("net: stmmac: Introducing support for Page Pool")
Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Tested-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently are duplicated checks on orig_egr_types which are
redundant, I believe this is a typo and should actually be
orig_ing_types || orig_egr_types instead of the expression
orig_egr_types || orig_egr_types. Fix these.
Addresses-Coverity: ("Same on both sides")
Fixes: c6b36bdd04 ("mlxsw: spectrum_ptp: Increase parsing depth when PTP is enabled")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Using the define here makes the code more expressive.
Signed-off-by: Hubert Feurstein <h.feurstein@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
It is perfectly ok to not have an gpio attached to the fixed-link node. So
the driver should not throw an error message when the gpio is missing.
Fixes: 5468e82f70 ("net: phy: fixed-phy: Drop GPIO from fixed_phy_add()")
Signed-off-by: Hubert Feurstein <h.feurstein@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Accessing the hdr of an skb that was consumed already isn't
a good idea.
First ask if the skb is a QoS packet, then keep that data
on stack, and then consume the skb.
This was spotted by KASAN.
Cc: stable@vger.kernel.org
Fixes: 08f7d8b69a ("iwlwifi: mvm: bring back mvm GSO code")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The index for the elements of the ACPI object we dereference
was static. This means that if we called the function twice
we wouldn't start from 3 again, but rather from the latest
index we reached in the previous call.
This was dutifully reported by KASAN.
Fix this.
Cc: stable@vger.kernel.org
Fixes: 6996490501 ("iwlwifi: mvm: add support for EWRD (Dynamic SAR) ACPI table")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In order to remember how to unmap a memory (as single or
as page), we maintain a bit per Transmit Buffer (TBs) in
the meta data (structure iwl_cmd_meta).
We maintain a bitmap: 1 bit per TB.
If the TB is set, we will free the memory as a page.
This bitmap was never cleared. Fix this.
Cc: stable@vger.kernel.org
Fixes: 3cd1980b0c ("iwlwifi: pcie: introduce new tfd and tb formats")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We erroneously added a check for FW API version 41 before sending
GEO_TX_POWER_LIMIT, but this was already implemented in version 38.
Additionally, it was cherry-picked to older versions, namely 17, 26
and 29, so check for those as well.
Cc: stable@vger.kernel.org
Fixes: eca1e56cee ("iwlwifi: mvm: don't send GEO_TX_POWER_LIMIT to old firmwares")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add a few PCI ID'S for 9000 series.
Signed-off-by: Ihab Zhaika <ihab.zhaika@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
lq_info is an arary of size 2, active_tbl index is u8.
When accessing lq_info[1 - active_tbl], theoretically it's possible
that the access will be made to a negative index value.
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
An earlier patch made sure that the queues are not lagging
too far behind. This means that iwl_mvm_release_frames
should not be called with a head_sn too far behind NSSN.
Don't take the risk to change completely the entry
condition to iwl_mvm_release_frames, but don't update
the head_sn is the NSSN is more than 2048 packets ahead
of us. Since this just cannot be right. This means that
the scenario described here happened. We are queue 0.
Q:0 Q:1
head_sn: 0 -> 2047
head_sn: 2048
Lots of packets arrive:
head_sn: 2047 -> 2150
send NSSN_SYNC notification
Handle notification
from the firmware and
do NOT move the head_sn
back to 2048
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>
The solution with the worker still had a bug, as in order
to get sta, rcu_read_lock should be used and thus no mutex
can be used inside iwl_mvm_rs_rate_init.
Also, spin_lock is a simpler solution, no need to spawn a
dedicated worker.
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The only place where the command was sent as SYNC is during
init and this is not really critical. This change is required
for replacing RS mutex with a spinlock (in the subsequent patch),
since SYNC comamnd requres sleeping and thus the flow cannot
be done when holding a spinlock.
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The comparison of the u32 variable wgds_tbl_idx with less than zero is
always going to be false because it is unsigned. Fix this by making
wgds_tbl_idx a plain signed int.
Addresses-Coverity: ("Unsigned compared against 0")
Fixes: 4fd445a2c8 ("iwlwifi: mvm: Add log information about SAR status")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This code clearly never could have worked, since it locks
while already locked. Add an unlocked __iwl_mvm_mac_set_key()
variant that doesn't do locking to fix that.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The driver should call iwl_dbg_tlv_free even if debugfs is not defined
since ini mode does not depend on debugfs ifdef.
Signed-off-by: Shahar S Matityahu <shahar.s.matityahu@intel.com>
Fixes: 68f6f492c4 ("iwlwifi: trans: support loading ini TLVs from external file")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
ini debug mode should work even if debug override is not defined.
Signed-off-by: Shahar S Matityahu <shahar.s.matityahu@intel.com>
Fixes: 68f6f492c4 ("iwlwifi: trans: support loading ini TLVs from external file")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
iwl_mvm_rs_tx_status can be called from two places in the code, but the
mutex is taken only on one of the calls. Split it into a wrapper taking
locks and an internal __iwl_mvm_rs_tx_status function.
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In order to support MSI-X efficiently, we want to avoid
communication across Rx queues. Each Rx queue should have
all the data it needs to process a packet.
The reordering buffer is a challenge in the MSI-X world
since we can have a single BA session whose packets are
directed to different queues. This is why each queue has
its own reordering buffer. The hardware is able to hint
the driver whether we have a hole or not, which allows
the driver to know whether it can release a packet or not.
This indication is called NSSN. Roughly, if the packet's
SN is lower than the NSSN, we can release the packet to
the stack. The NSSN is the SN of the newest packet received
without any holes + 1.
This is working as long as we don't have packets that we
release because of a timeout. When that happens, we could
have taken the decision to release a packet after we have
been waiting for its predecessor for too long. If this
predecessor comes later, we have to drop it because we
can't release packets out of order. In that case, the
hardware will give us an indication that we can we release
the packet (SN < NSSN), but the packet still needs to be
dropped.
This is why we sometimes need to ignore the NSSN and we
track the head_sn in software.
Here is a specific example of this:
1) Rx queue 1 got packets: 480, 482, 483
2) We release 480 to to the stack and wait for 481
3) NSSN is now 481
4) The timeout expires
5) We release 482 and 483, NSSN is still 480
6) 481 arrives its NSSN is 484.
We need to drop 481 even if 481 < 484. This is why we'll
update the head_sn to 484 at step 2. The flow now is:
1) Rx queue 1 got packets: 480, 482, 483
2) We release 480 to to the stack and wait for 481
3) NSSN is now 481 / head_sn is 481
4) The timeout expires
5) We release 482 and 483, NSSN is still 480 but head_sn is 484.
6) 481 arrives its NSSN is 484, but head_sn is 484 and we drop it.
This code introduces another problem in case all the traffic
goes well (no hole, no timeout):
Rx queue 1: 0 -> 483 (head_sn = 484)
Rx queue 2: 501 -> 4095 (head_sn = 0)
Rx queue 2: 0 -> 480 (head_sn = 481)
Rx queue 1: 481 but head_sn = 484 and we drop it.
At this point, the SN of queue 1 is far behind: more than
4040 packets behind. Queue 1 will consider 481 "old"
because 481 is in [501-64:501] whereas it is a very new
packet.
In order to fix that, send an Rx notification from time to
time (twice across the full set of 4096 packets) to make
sure no Rx queue is lagging too far behind.
What will happen then is:
Rx queue 1: 0 -> 483 (head_sn = 484)
Rx queue 2: 501 -> 2047 (head_sn = 2048)
Rx queue 1: Sync nofication (head_sn = 2048)
Rx queue 2: 2048 -> 4095 (head_sn = 0)
Rx queue 1: Sync notification (head_sn = 0)
Rx queue 2: 1 -> 481 (head_sn = 482)
Rx queue 1: 481 and head_sn = 0.
In queue 1's data, head_sn is now 0, the packet coming in
is 481, it'll understand that the new packet is new and it
won't be dropped.
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>
Instead of allocating memory for which we have an upper
limit, use a small buffer on stack.
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>
We will soon be using a new notification that will be
initiated by the driver, sent to the firmware and sent
back to all the RSS queues by the firmware. This new
notification will be useful to synchronize the NSSN across
all the queues.
For now, don't send the notification, just add the code to
handle it. Later patch will add the code to actually send
it.
While at it, validate the baid coming from the firmware to
avoid accessing an array with a bad index in the driver.
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>
We will need a new type of synchronization message going
through all the RSS queues. Prepare the ground for this.
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>
Firmware versions before 41 don't support the GEO_TX_POWER_LIMIT
command, and sending it to the firmware will cause a firmware crash.
We allow this via debugfs, so we need to return an error value in case
it's not supported.
This had already been fixed during init, when we send the command if
the ACPI WGDS table is present. Fix it also for the other,
userspace-triggered case.
Cc: stable@vger.kernel.org
Fixes: 7fe90e0e3d ("iwlwifi: mvm: refactor geo init")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Rate perform uses the lq_sta table to calculate the next rate to scale
while rate init resets the same table,
Rate perform is done in soft irq context in parallel to rate init
that can be called in case we are doing changes like AP changes BW
or moving state for auth to assoc.
Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
On older NICs, we occasionally see issues with A-MSDU support,
where the commands in the FIFO get confused and then we see an
assert EDC because the next command in the FIFO isn't TX.
We've tried to isolate this issue and understand where it comes
from, but haven't found any errors in building the A-MSDU in
software.
At least for now, disable A-MSDU support on older hardware so
that users can use it again without fearing the assert.
This fixes https://bugzilla.kernel.org/show_bug.cgi?id=203315.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Geert Uytterhoeven