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A hard hang is observed whenever the ethernet interface is brought
down. If the PHY is stopped before the LPC core block is reset,
the SoC will hang. Comparing lpc_eth_close() and lpc_eth_open() I
re-arranged the ordering of the functions calls in lpc_eth_close() to
reset the hardware before stopping the PHY.
Fixes: b7370112f519 ("lpc32xx: Added ethernet driver")
Signed-off-by: Trevor Woerner <twoerner@gmail.com>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit 406f42fa0d3c ("net-next: When a bond have a massive amount
of VLANs...") introduced a rbtree for faster Ethernet address look
up. To maintain netdev->dev_addr in this tree we need to make all
the writes to it got through appropriate helpers.
In the case of catc we need a new temporary buffer to conform
to the rules for DMA coherency. That in turn necessitates
a reworking of error handling in probe().
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This change fix the TX ack mechanism in various ways:
- For NO_ACK tagged packets, we don't need to wait for TX_ACK indication
and so are not subject to the single packet ack limitation. So we don't
have to stop the tx queue, and can call the tx status callback as soon
as DMA transfer has completed.
- Fix skb ownership/reference. Only start status indication timeout
once the DMA transfer has been completed. This avoids the skb to be
both referenced in the DMA tx ring and by the tx_ack_skb pointer,
preventing any use-after-free or double-free.
- This adds a sanity (paranoia?) check on the skb tx ack pointer.
- Resume TX queue if TX status tagged packet TX fails.
Cc: stable@vger.kernel.org
Fixes: fdf21cc37149 ("wcn36xx: Add TX ack support")
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1634567281-28997-1-git-send-email-loic.poulain@linaro.org
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Without the patch we fail:
$ sudo brctl addbr br0
$ sudo brctl addif br0 wlp1s0
$ sudo iw wlp1s0 set 4addr on
command failed: Device or resource busy (-16)
Last command failed but iface was already in 4addr mode.
Fixes: ad4bb6f8883a ("cfg80211: disallow bridging managed/adhoc interfaces")
Signed-off-by: Janusz Dziedzic <janusz.dziedzic@gmail.com>
Link: https://lore.kernel.org/r/20211024201546.614379-1-janusz.dziedzic@gmail.com
[add fixes tag, fix indentation, edit commit log]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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We observe unexpected connection drops with some APs due to
non-acked mac80211 generated null data frames (keep-alive).
After debugging and capture, we noticed that null frames are
submitted at standard data bitrate and that the given APs are
in trouble with that.
After setting the null frame bitrate to control bitrate, all
null frames are acked as expected and connection is maintained.
Not sure if it's a requirement of the specification, but it seems
the right thing to do anyway, null frames are mostly used for control
purpose (power-saving, keep-alive...), and submitting them with
a slower/simpler bitrate/modulation is more robust.
Cc: stable@vger.kernel.org
Fixes: 512b191d9652 ("wcn36xx: Fix TX data path")
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1634560399-15290-1-git-send-email-loic.poulain@linaro.org
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The management registrations locking was broken, the list was
locked for each wdev, but cfg80211_mgmt_registrations_update()
iterated it without holding all the correct spinlocks, causing
list corruption.
Rather than trying to fix it with fine-grained locking, just
move the lock to the wiphy/rdev (still need the list on each
wdev), we already need to hold the wdev lock to change it, so
there's no contention on the lock in any case. This trivially
fixes the bug since we hold one wdev's lock already, and now
will hold the lock that protects all lists.
Cc: stable@vger.kernel.org
Reported-by: Jouni Malinen <j@w1.fi>
Fixes: 6cd536fe62ef ("cfg80211: change internal management frame registration API")
Link: https://lore.kernel.org/r/20211025133111.5cf733eab0f4.I7b0abb0494ab712f74e2efcd24bb31ac33f7eee9@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next
Kalle Valo says:
====================
wireless-drivers-next patches for v5.16
Third set of patches for v5.16. This time we have a small one to
quickly fix two mt76 build failures I had missed in my previous pull
request.
Major changes:
mt76
* fix linking when CONFIG_MMC is disabled
* fix dev_err() format warning
* mt7615: mt7622: fix ibss and meshpoint
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Jeroen de Borst says:
====================
gve: Add jumbo-frame support for GQ
This patchset introduces jumbo-frame support for the GQ queue format.
The device already supports jumbo-frames on TX. This introduces
multi-descriptor RX packets using a packet continuation bit.
A widely deployed driver has a bug with causes it to fail to load
when a MTU greater than 2048 bytes is configured. A jumbo-frame device
option is introduced to pass a jumbo-frame MTU only to drivers that
support it.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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A widely deployed driver has a bug that will cause the driver not
to load when a max_mtu > 2048 is present in the device descriptor.
To avoid this bug while still enabling jumbo frames, we present a lower
max_mtu in the device descriptor and pass the actual max_mtu in
a separate device option.
The driver supports 2 different queue formats. To enable features
on one queue format, but not the other, a supported_features mask
was added to the device options in the device descriptor.
Signed-off-by: Shailend Chand <shailend@google.com>
Signed-off-by: Jeroen de Borst <jeroendb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This enables the driver to receive RX packets spread across multiple
buffers:
For a given multi-fragment packet the "packet continuation" bit is set
on all descriptors except the last one. These descriptors' payloads are
combined into a single SKB before the SKB is handed to the
networking stack.
This change adds a "packet buffer size" notion for RX queues. The
CreateRxQueue AdminQueue command sent to the device now includes the
packet_buffer_size.
We opt for a packet_buffer_size of PAGE_SIZE / 2 to give the
driver the opportunity to flip pages where we can instead of copying.
Signed-off-by: David Awogbemila <awogbemila@google.com>
Signed-off-by: Jeroen de Borst <jeroendb@google.com>
Reviewed-by: Catherine Sullivan <csully@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This refactor moves the skb_head and skb_tail fields into a new
gve_rx_ctx struct. This new struct will contain information about the
current packet being processed. This is in preparation for
multi-descriptor RX packets.
Signed-off-by: David Awogbemila <awogbemila@google.com>
Signed-off-by: Jeroen de Borst <jeroendb@google.com>
Reviewed-by: Catherine Sullivan <csully@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Ido Schimmel says:
====================
selftests: mlxsw: Various updates
This patchset contains various updates to mlxsw selftests.
Patch #1 replaces open-coded compatibility checks with dedicated
helpers. These helpers are used to skip tests when run on incompatible
machines.
Patch #2 avoids spurious failures in some tests by using permanent
neighbours instead of reachable ones.
Patch #3 reduces the run time of a test by not iterating over all the
available trap policers.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Instead of iterating over all the available trap policers, only perform
the tests with three policers: The first, the last and the one in the
middle of the range. On a Spectrum-3 system, this reduces the run time
from almost an hour to a few minutes.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The nexthop objects tests configure dummy reachable neighbours so that
the nexthops will have a MAC address and be programmed to the device.
Since these are dummy reachable neighbours, they can be transitioned by
the kernel to a failed state if they are around for too long. This can
happen, for example, if the "TIMEOUT" variable is configured with a too
high value.
Make the tests more robust by configuring the neighbours as permanent,
so that the tests do not depend on the configured timeout value.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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A number of mlxsw-specific selftests currently detect whether they are run
on a compatible machine, and bail out silently when not. These tests are
however done in a somewhat impenetrable manner by directly comparing PCI
IDs against a blacklist or a whitelist, and bailing out silently if the
machine is not compatible.
Instead, add a helper, mlxsw_only_on_spectrum(), which allows specifying
the supported machines in a human-readable manner. If the current machine
is incompatible, the helper emits a SKIP message and returns an error code,
based on which the caller can gracefully bail out in a suitable way. This
allows a more readable conditions such as:
mlxsw_only_on_spectrum 2+ || return
Convert all existing open-coded guards to the new helper. Also add two new
guards to do_mark_test() and do_drop_test(), which are supported only on
Spectrum-2+, but the corresponding check was not there.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Andrew Lunn says:
====================
ksettings_{get|set} lock fixes
Walter Stoll <Walter.Stoll@duagon.com> reported a race condition
between "ethtool -s eth0 speed 100 duplex full autoneg off" and phylib
reading the current status from the PHY. Both ksetting_get and
ksetting_set fail the take the phydev mutex, and as a result, there is
a small window of time where the phydev members are not self
consistent.
Patch 1 fixes phy_ethtool_ksettings_get by adding the needed lock.
Patches 2 and 3 move code around and perform to refactoring, to allow
patch 4 to fix phy_ethtool_ksettings_set by added the lock.
Thanks go to Walter for the detailed origional report, suggested fix,
and testing of the proposed patches.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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There is a race condition where the PHY state machine can change
members of the phydev structure at the same time userspace requests a
change via ethtool. To prevent this, have phy_ethtool_ksettings_set
take the PHY lock.
Fixes: 2d55173e71b0 ("phy: add generic function to support ksetting support")
Reported-by: Walter Stoll <Walter.Stoll@duagon.com>
Suggested-by: Walter Stoll <Walter.Stoll@duagon.com>
Tested-by: Walter Stoll <Walter.Stoll@duagon.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Split phy_start_aneg into a wrapper which takes the PHY lock, and a
helper doing the real work. This will be needed when
phy_ethtook_ksettings_set takes the lock.
Fixes: 2d55173e71b0 ("phy: add generic function to support ksetting support")
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This allows it to make use of a helper which assume the PHY is already
locked.
Fixes: 2d55173e71b0 ("phy: add generic function to support ksetting support")
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The PHY structure should be locked while copying information out if
it, otherwise there is no guarantee of self consistency. Without the
lock the PHY state machine could be updating the structure.
Fixes: 2d55173e71b0 ("phy: add generic function to support ksetting support")
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit 9af7c32ceca8 ("ath10k: add target IRAM recovery feature support")
introduced a new firmware feature flag ATH10K_FW_FEATURE_IRAM_RECOVERY. But
this caused ath10k_pci module load to fail if ATH10K_FW_CRASH_DUMP_RAM_DATA bit
was not enabled in the ath10k coredump_mask module parameter:
[ 2209.328190] ath10k_pci 0000:02:00.0: qca9984/qca9994 hw1.0 target 0x01000000 chip_id 0x00000000 sub 168c:cafe
[ 2209.434414] ath10k_pci 0000:02:00.0: kconfig debug 1 debugfs 1 tracing 1 dfs 1 testmode 1
[ 2209.547191] ath10k_pci 0000:02:00.0: firmware ver 10.4-3.9.0.2-00099 api 5 features no-p2p,mfp,peer-flow-ctrl,btcoex-param,allows-mesh-bcast,no-ps,peer-fixed-rate,iram-recovery crc32 cbade90a
[ 2210.896485] ath10k_pci 0000:02:00.0: board_file api 1 bmi_id 0:1 crc32 a040efc2
[ 2213.603339] ath10k_pci 0000:02:00.0: failed to copy target iram contents: -12
[ 2213.839027] ath10k_pci 0000:02:00.0: could not init core (-12)
[ 2213.933910] ath10k_pci 0000:02:00.0: could not probe fw (-12)
And by default coredump_mask does not have ATH10K_FW_CRASH_DUMP_RAM_DATA
enabled so anyone using a firmware with iram-recovery feature would fail. To my
knowledge only QCA9984 firmwares starting from release 10.4-3.9.0.2-00099
enabled the feature.
The reason for regression was that ath10k_core_copy_target_iram() used
ath10k_coredump_get_mem_layout() to get the memory layout, but when
ATH10K_FW_CRASH_DUMP_RAM_DATA was disabled it would get just NULL and bail out
with an error.
While looking at all this I noticed another bug: if CONFIG_DEV_COREDUMP is
disabled but the firmware has iram-recovery enabled the module load fails with
similar error messages. I fixed that by returning 0 from
ath10k_core_copy_target_iram() when _ath10k_coredump_get_mem_layout() returns
NULL.
Tested-on: QCA9984 hw2.0 PCI 10.4-3.9.0.2-00139
Fixes: 9af7c32ceca8 ("ath10k: add target IRAM recovery feature support")
Signed-off-by: Abinaya Kalaiselvan <akalaise@codeaurora.org>
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211020075054.23061-1-kvalo@codeaurora.org
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Luo Jie says:
====================
net: phy: Add qca8081 ethernet phy driver
This patch series add the qca8081 ethernet phy driver support, which
improve the wol feature, leverage at803x phy driver and add the fast
retrain, master/slave seed and CDT feature.
Changes in v7:
* update Reviewed-by tags.
Changes in v6:
* add Reviewed-by tags on the applicable patches.
Changes in v5:
* rebase the patches on net-next/master.
Changes in v4:
* handle other interrupts in set_wol.
* add genphy_c45_fast_retrain.
Changes in v3:
* correct a typo "excpet".
* remove the suffix "PHY" from phy name.
Changes in v2:
* add definitions of fast retrain related registers in mdio.h.
* break up the patch into small patches.
* improve the at803x legacy code.
Changes in v1:
* merge qca8081 phy driver into at803x.
* add cdt feature.
* leverage at803x phy driver helpers.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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To perform CDT of qca8081 phy:
1. disable hibernation.
2. force phy working in MDI mode.
3. force phy working in 1000BASE-T mode.
4. configure the related thresholds.
Signed-off-by: Luo Jie <luoj@codeaurora.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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1. The master/slave seed needs to be updated when the link can't
be created.
2. The case where two qca8081 PHYs are connected each other and
master/slave seed is generated as the same value also needs
to be considered, so adding this code change into read_status
instead of link_change_notify.
Signed-off-by: Luo Jie <luoj@codeaurora.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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qca8081 phy is a single port phy, configure
phy the lower seed value to make it linked as slave
mode easier.
Signed-off-by: Luo Jie <luoj@codeaurora.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add the qca8081 phy driver config_init function, which includes:
1. Enable fast restrain.
2. Add 802.3az configurations.
3. Initialize ADC threshold as 100mv.
Signed-off-by: Luo Jie <luoj@codeaurora.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add generic fast retrain auto-negotiation function for C45 PHYs.
Signed-off-by: Luo Jie <luoj@codeaurora.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add the constants for 2.5G fast retrain capability
in 10G AN control register, fast retrain status and
control register and THP bypass register into mdio.h.
Signed-off-by: Luo Jie <luoj@codeaurora.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Reuse at803x phy driver config_aneg excepting
adding 2500M auto-negotiation.
Signed-off-by: Luo Jie <luoj@codeaurora.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Reuse the at803x phy driver get_features excepting
adding 2500M capability.
Signed-off-by: Luo Jie <luoj@codeaurora.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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1. Separate the function at803x_read_specific_status from
the at803x_read_status, since it can be reused by the
read_status of qca8081 phy driver excepting adding the
2500M speed.
2. Add the qca8081 read_status function qca808x_read_status.
Signed-off-by: Luo Jie <luoj@codeaurora.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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qca8081 is a single port ethernet phy chip that supports
10/100/1000/2500 Mbps mode.
Add the basic phy driver features, and reuse the at803x
phy driver functions.
Signed-off-by: Luo Jie <luoj@codeaurora.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Use GENMASK() for the current speed value.
Signed-off-by: Luo Jie <luoj@codeaurora.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The wol feature is controlled by the MMD3.8012 bit5,
need to set this bit when the wol function is enabled.
The reg18 bit0 is for enabling WOL interrupt, when wol
occurs, the wol interrupt status reg19 bit0 is set to 1.
Call phy_trigger_machine if there are any other interrupt
pending in the function set_wol.
Signed-off-by: Luo Jie <luoj@codeaurora.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Convert at803x_set_wol to use phy_modify.
Signed-off-by: Luo Jie <luoj@codeaurora.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Replace AT803X_DEVICE_ADDR with MDIO_MMD_PCS defined in mdio.h.
Signed-off-by: Luo Jie <luoj@codeaurora.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Using a kernel pointer in place of a dma_addr_t token can
lead to undefined behavior if that makes it into cache
management functions. The compiler caught one such attempt
in a cast:
drivers/net/wireless/ath/ath10k/mac.c: In function 'ath10k_add_interface':
drivers/net/wireless/ath/ath10k/mac.c:5586:47: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
5586 | arvif->beacon_paddr = (dma_addr_t)arvif->beacon_buf;
| ^
Looking through how this gets used down the way, I'm fairly
sure that beacon_paddr is never accessed again for ATH10K_DEV_TYPE_HL
devices, and if it was accessed, that would be a bug.
Change the assignment to use a known-invalid address token
instead, which avoids the warning and makes it easier to catch
bugs if it does end up getting used.
Fixes: e263bdab9c0e ("ath10k: high latency fixes for beacon buffer")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211014075153.3655910-1-arnd@kernel.org
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QCA6390 firmware uses HAL_RX_BUF_RBM_SW1_BM, not HAL_RX_BUF_RBM_SW3_BM. This is
needed to fix a case where an A-MSDU has an unexpected LLC/SNAP header in the
first subframe (CVE-2020-24588).
Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1
Signed-off-by: Baochen Qiang <bqiang@codeaurora.org>
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210914163726.38604-2-jouni@codeaurora.org
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Guangbin Huang says:
====================
net: hns3: updates for -next
This series includes some updates for the HNS3 ethernet driver.
for it.
off.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch adds himac error recovery module, link_error type and
ptp_error type for himac.
Signed-off-by: Jiaran Zhang <zhangjiaran@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch adds one ras error of bus related for roce, this error
including RRESP/BRESP and read poison error.
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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autoneg off
Currently, the ethtool advertised link modes of FIBRE port is cleared to
zero when autoneg is off, so user can not get the advertised link modes
info directly from "ethtool <dev>" command.
In order to ameliorate this situation, update data of speeds, fec and pause
of advertised link modes when autoneg is off.
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The functions of converting speed ability to ethtool link mode just
support setting mac->supported currently, to reuse these functions to
set ethtool link mode for others(i.e. advertising), delete the argument
mac and add argument link_mode.
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The mac statistics add pause/pfc durations in device version V3, we can
get total active cycle of pause/pfc from these durations.
As driver gets register number from firmware to calculate desc number to
query mac statistics, it needs to set mac statistics extended enable bit
in firmware command 0x701A to tell firmware that driver supports extended
mac statistics, otherwise firmware only returns register number of
version V1.
As pause/pfc durations are not supported by hardware of old version, they
should not been shown in command "ethtool -S ethX" in this case, so add
checking max register number of each mac statistic in their version.
If the max register number of one mac statistic is greater than register
number got from firmware, it means hardware does not support this mac
statistic, so ignore this statistic when get string and data of mac
statistic.
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently, driver queries number of mac statistics before querying mac
statistics. As the number of mac statistics is a fixed value in firmware,
it is redundant to query this number everytime before querying mac
statistics, it can just be queried once in initialization process and
saved in device specifications.
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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After querying mac statistics from firmware, driver copies data from
descriptors to struct mac_stats of hdev, and the number of copied data
is just according to the register number queried from firmware. There is
a problem that if the register number queried from firmware is larger
than data number of struct mac_stats, it will cause a copy overflow.
So if the firmware adds more mac statistics in later version, it is not
compatible with driver of old version.
To fix this problem, the number of copied data needs to be used the
minimum value between the register number queried from firmware and
data number of struct mac_stats.
The first descriptor has three data and there is one reserved, to
optimize the copy process, add this reserverd data to struct mac_stats.
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since user may need to check the current configuration of the
interrupt coalesce, so add debugfs support for query this info.
Create a single file "coalesce_info" for it, and query it by
"cat coalesce_info", return the result to userspace.
For device whose version is above V3(include V3), the GL's register
contains usecs and 1us unit configuration. When get the usecs
configuration from this register, it will include the confusing unit
configuration, so add a GL mask to get the correct value, and add
a QL mask for the frames configuration as well.
The display style is below:
$ cat coalesce_info
tx interrupt coalesce info:
VEC_ID ALGO_STATE PROFILE_ID CQE_MODE TUNE_STATE STEPS_LEFT...
0 IN_PROG 4 EQE ON_TOP 0...
1 START 3 EQE LEFT 1...
rx interrupt coalesce info:
VEC_ID ALGO_STATE PROFILE_ID CQE_MODE TUNE_STATE STEPS_LEFT...
0 IN_PROG 3 EQE LEFT 1...
1 IN_PROG 0 EQE ON_TOP 0...
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Julian Wiedmann says:
====================
s390/qeth: updates 2021-10-25
please apply the following patch series for qeth to netdev's net-next tree.
This brings some minor maintenance improvements, and a bunch of cleanups
so that the W=1 build passes without warning.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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qeth_add_hw_header() is missing documentation for some of its
parameters, fix that up.
Reported-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fix kernel doc comments and remove incorrect kernel doc indicators.
Acked-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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