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ice_vsi_type_str converts an ice_vsi_type enum value to its string
equivalent. This is expected to help easily identify VSI types from
module print statements.
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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There is no reason to do this conditional check before the assignment so
simply remove it.
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Currently the VLAN ice_flg64_bits are off by 1. Fix this by
setting the ICE_FLG_EVLAN_x8100 flag to 14, which also updates
ICE_FLG_EVLAN_x9100 to 15 and ICE_FLG_VLAN_x8100 to 16.
Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Shorten the delay for SQ responses, but increase the number of loops.
Max delay time is unchanged, but some operations complete much more
quickly.
In the process, add a new define to make the delay count and delay time
more explicit. Add comments to make things more explicit.
This fixes a problem with VF resets failing on with many VFs.
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Since the return value from the Download Package AQ command is stored in
hw->pkg_dwnld_status, use that instead of sq_last_status since that may
have the return value from some other AQ command leading to unexpected
results.
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Currently we check to make sure the vector_id passed down from iavf
is less than or equal to pf->hw.func_caps.common_caps.num_msix_vectors.
This is incorrect because the vector_id is always 0-based and never
greater than or equal to the ICE_MAX_INTR_PER_VF. Fix this by checking
to make sure the vector_id is less than the max allowed interrupts per
VF (ICE_MAX_INTR_PER_VF).
Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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This patch adds code to check if PF or VF is disabled before honoring
mailbox message to configure VF - If it is disabled, and opcode is for
resetting VF, the PF driver simply tell VF that all is set. In addition,
if reset is ongoing, and Admin intend to configure VF on the host, we can
poll the VF enabling bit to make sure it is ready before continue - If
after ~250 milliseconds, VF is not in active state, we can bail out with
invalid error.
Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Move software LLDP configuration when FW DCBX is disabled to
ice_init_pf_dcb, since that is where the FW DCBX state is determined.
Remove this software LLDP configuration from ice_vsi_setup and
ice_set_priv_flags. Software configuration includes redirecting Rx LLDP
packets up the stack, when FW DCBX is not running.
Signed-off-by: Paul Greenwalt <paul.greenwalt@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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This patch fixes the call trace caused by the kernel when the Rx/Tx
descriptor size change request is initiated via ethtool when DCB is
configured. ice_set_ringparam() should use vsi->num_txq instead of
vsi->alloc_txq as it represents the queues that are enabled in the
driver when DCB is enabled/disabled. Otherwise, queue index being
used can go out of range.
For example, when vsi->alloc_txq has 104 queues and with 3 TCS enabled
via DCB, each TC gets 34 queues, vsi->num_txq will be 102 and only 102
queues will be enabled.
Signed-off-by: Usha Ketineni <usha.k.ketineni@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Certain subsystems behave very badly when called during reset (core
dump). This patch returns -EBUSY when reconfiguring some subsystems
during reset. With this patch some ethtool functions will not core
dump during reset.
Signed-off-by: Henry Tieman <henry.w.tieman@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Implement interface layer for the DCBNL subsystem. These are the functions
to support the callbacks defined in the dcbnl_rtnl_ops struct. These
callbacks are going to be used to interface with the DCB settings of the
device. Implementation of dcb_nl set functions and supporting SW DCB
functions.
Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Allow for rate limiting Tx queues. Bitrate is set in
Mbps(megabits per second).
Mbps max-rate is set for the queue via sysfs:
/sys/class/net/<iface>/queues/tx-<queue>/tx_maxrate
ex: echo 100 >/sys/class/net/ens7/queues/tx-0/tx_maxrate
echo 200 >/sys/class/net/ens7/queues/tx-1/tx_maxrate
Note: A value of zero for tx_maxrate means disabled,
default is disabled.
Signed-off-by: Usha Ketineni <usha.k.ketineni@intel.com>
Co-developed-by: Tarun Singh <tarun.k.singh@intel.com>
Signed-off-by: Tarun Singh <tarun.k.singh@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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DCB configuration flow needs to disable and enable only the PF (main)
VSI, so use ice_ena_vsi and ice_dis_vsi. To avoid the use of ifdef to
control the staticness of these functions, move them to ice_lib.c.
Also replace the allocate and copy of old_cfg to kmemdup() in
ice_pf_dcb_cfg().
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Fix following compile error on i386 architecture.
ERROR: "__udivdi3" [drivers/net/ethernet/chelsio/cxgb4/cxgb4.ko] undefined!
Fixes: 0e395b3cb1fb ("cxgb4: add FLOWC based QoS offload")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
Johannes Berg says:
====================
Three small fixes:
* we hit a failure path bug related to
ieee80211_txq_setup_flows()
* also use kvmalloc() to make that less likely
* fix a timing value shortly after boot (during
INITIAL_JIFFIES)
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
Some relatively small changes:
* typo fixes in docs
* APIs for station separation using VLAN tags rather
than separate wifi netdevs
* some preparations for upcoming features (802.3 offload
and airtime queue limits (AQL)
* stack reduction in ieee80211_assoc_success()
* use DEFINE_DEBUGFS_ATTRIBUTE in hwsim
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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match_string() returns the array index of a matching string.
Use it instead of the open-coded implementation.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add optional support for syscfg clock in dwmac-stm32.c
Now Syscfg clock is activated automatically when syscfg
registers are used
Signed-off-by: Christophe Roullier <christophe.roullier@st.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Octeon's input ring-buffer entry has 14 bits-wide size field, so to account
for second possible VLAN header max_mtu must be further reduced.
Fixes: 109cc16526c6d ("ethernet/cavium: use core min/max MTU checking")
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
Pull modules fix from Jessica Yu:
"Fix `make nsdeps` for modules composed of multiple source files.
Since $mod_source_files was not in quotes in the call to
generate_deps_for_ns(), not all the source files for a module were
being passed to spatch"
* tag 'modules-for-v5.4-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
scripts/nsdeps: make sure to pass all module source files to spatch
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fix from Will Deacon:
"Fix pte_same() to avoid getting stuck on write fault.
This single arm64 fix is a revert of 747a70e60b72 ("arm64: Fix
copy-on-write referencing in HugeTLB"), not because that patch was
wrong, but because it was broken by aa57157be69f ("arm64: Ensure
VM_WRITE|VM_SHARED ptes are clean by default") which we merged in
-rc6.
We spotted the issue in Android (AOSP), where one of the JIT threads
gets stuck on a write fault during boot because the faulting pte is
marked as PTE_DIRTY | PTE_WRITE | PTE_RDONLY and the fault handler
decides that there's nothing to do thanks to pte_same() masking out
PTE_RDONLY.
Thanks to John Stultz for reporting this and testing this so quickly,
and to Steve Capper for confirming that the HugeTLB tests continue to
pass"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Do not mask out PTE_RDONLY in pte_same()
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The owner member of struct pwm_ops must be set to THIS_MODULE to
increase the reference count of the module such that the module cannot
be removed while its code is in use.
Fixes: daa5abc41c80 ("pwm: Add support for Broadcom iProc PWM controller")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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Pull XArray fixes from Matthew Wilcox:
"These all fix various bugs, some of which people have tripped over and
some of which have been caught by automatic tools"
* tag 'xarray-5.4' of git://git.infradead.org/users/willy/linux-dax:
idr: Fix idr_alloc_u32 on 32-bit systems
idr: Fix integer overflow in idr_for_each_entry
radix tree: Remove radix_tree_iter_find
idr: Fix idr_get_next_ul race with idr_remove
XArray: Fix xas_next() with a single entry at 0
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fix from Rafael Wysocki:
"Fix an 'unchecked MSR access' warning in the intel_pstate cpufreq
driver (Srinivas Pandruvada)"
* tag 'pm-5.4-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: intel_pstate: Fix invalid EPB setting
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"It became a bit largish, but all small and good for 5.4:
- A regression fix of ALSA timer code bug that sneaked in by a recent
cleanup; never trust innocent-looking guys...
- Fix for compress API max size check signedness
- Fixes in HD-audio: CA0132 work stall, Intel Tigerlake HDMI
- A few fixes for SOF: memory leak, sanity-check and build fixes
- A collection of device-specific fixes: firewire, rockchip, ASoC
HDMI, rsnd, ASoC HDA, stm32, TI, kirkwood, msm, max98373"
* tag 'sound-5.4-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: timer: Fix incorrectly assigned timer instance
ASoC: SOF: topology: Fix bytes control size checks
ALSA: hda: hdmi - add Tigerlake support
ASoC: max98373: replace gpio_request with devm_gpio_request
ASoC: stm32: sai: add restriction on mmap support
ALSA: hda/ca0132 - Fix possible workqueue stall
ASoC: hdac_hda: fix race in device removal
ALSA: bebob: fix to detect configured source of sampling clock for Focusrite Saffire Pro i/o series
ASoC: rockchip: rockchip_max98090: Enable SHDN to fix headset detection
ASoC: ti: sdma-pcm: Add back the flags parameter for non standard dma names
ASoC: SOF: ipc: Fix memory leak in sof_set_get_large_ctrl_data
ASoC: SOF: Fix memory leak in sof_dfsentry_write
ASoC: SOF: Intel: hda-stream: fix the CONFIG_ prefix missing
ASoC: kirkwood: fix device remove ordering
ASoC: rsnd: dma: fix SSI9 4/5/6/7 busif dma address
ASoC: hdmi-codec: drop mutex locking again
ASoC: kirkwood: fix external clock probe defer
ASoC: compress: fix unsigned integer overflow check
ASoC: msm8916-wcd-analog: Fix RX1 selection in RDAC2 MUX
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Pull drm fixes from Dave Airlie:
"Weekly fixes for drm: amdgpu has a few but they are pretty scattered
fixes, the fbdev one is a build regression fix that we didn't want to
risk leaving out, otherwise a couple of i915, one radeon and a core
atomic fix.
core:
- add missing documentation for GEM shmem madvise helpers
- Fix for a state dereference in atomic self-refresh helpers
fbdev:
- One compilation fix for c2p fbdev helpers
amdgpu:
- Fix navi14 display issue root cause and revert workaround
- GPU reset scheduler interaction fix
- Fix fan boost on multi-GPU
- Gfx10 and sdma5 fixes for navi
- GFXOFF fix for renoir
- Add navi14 PCI ID
- GPUVM fix for arcturus
radeon:
- Port an SI power fix from amdgpu
i915:
- Fix HPD poll to avoid kworker consuming a lot of cpu cycles.
- Do not use TBT type for non Type-C ports"
* tag 'drm-fixes-2019-11-08' of git://anongit.freedesktop.org/drm/drm:
drm/radeon: fix si_enable_smc_cac() failed issue
drm/amdgpu/renoir: move gfxoff handling into gfx9 module
drm/amdgpu: add warning for GRBM 1-cycle delay issue in gfx9
drm/amdgpu: add dummy read by engines for some GCVM status registers in gfx10
drm/amdgpu: register gpu instance before fan boost feature enablment
drm/amd/swSMU: fix smu workload bit map error
drm/shmem: Add docbook comments for drm_gem_shmem_object madvise fields
drm/amdgpu: add navi14 PCI ID
Revert "drm/amd/display: setting the DIG_MODE to the correct value."
drm/amd/display: Add ENGINE_ID_DIGD condition check for Navi14
drm/amdgpu: dont schedule jobs while in reset
drm/amdgpu/arcturus: properly set BANK_SELECT and FRAGMENT_SIZE
drm/atomic: fix self-refresh helpers crtc state dereference
drm/i915/dp: Do not switch aux to TBT mode for non-TC ports
drm/i915: Avoid HPD poll detect triggering a new detect cycle
fbdev: c2p: Fix link failure on non-inlining
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git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
"Fixes for various clk driver issues that happened because of code we
merged this merge window.
The Amlogic driver was missing some flags causing rates to be rounded
improperly or clk_set_rate() to fail. The Samsung driver wasn't
freeing everything on error paths and improperly saving/restoring PLL
state across suspend/resume. The at91 driver was calling msleep() too
early when scheduling hadn't started, so we put in place a quick
solution until we can handle this sort of problem in the core
framework.
There were also problems with the Allwinner driver and operator
precedence being incorrect causing subtle bugs. Finally, the TI driver
was duplicating aliases and not delaying long enough leading to some
unexpected timeouts"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: ti: clkctrl: Fix failed to enable error with double udelay timeout
clk: ti: dra7-atl-clock: Remove ti_clk_add_alias call
clk: sunxi-ng: a80: fix the zero'ing of bits 16 and 18
clk: sunxi: Fix operator precedence in sunxi_divs_clk_setup
clk: ast2600: Fix enabling of clocks
clk: at91: avoid sleeping early
clk: imx8m: Use SYS_PLL1_800M as intermediate parent of CLK_ARM
clk: samsung: exynos5420: Preserve PLL configuration during suspend/resume
clk: samsung: exynos542x: Move G3D subsystem clocks to its sub-CMU
clk: samsung: exynos5433: Fix error paths
clk: at91: sam9x60: fix programmable clock
clk: meson: g12a: set CLK_MUX_ROUND_CLOSEST on the cpu clock muxes
clk: meson: g12a: fix cpu clock rate setting
clk: meson: gxbb: let sar_adc_clk_div set the parent clock rate
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There are two callers of this function and they both unlock the mutex so
this ends up being a double unlock.
Fixes: 44ed167da748 ("drbd: rcu_read_lock() and rcu_dereference() for tconn->net_conf")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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The max value of EPB can only be 0x0F. Attempting to set more than that
triggers an "unchecked MSR access error" warning which happens in
intel_pstate_hwp_force_min_perf() called via cpufreq stop_cpu().
However, it is not even necessary to touch the EPB from intel_pstate,
because it is restored on every CPU online by the intel_epb.c code,
so let that code do the right thing and drop the redundant (and
incorrect) EPB update from intel_pstate.
Fixes: af3b7379e2d70 ("cpufreq: intel_pstate: Force HWP min perf before offline")
Reported-by: Qian Cai <cai@lca.pw>
Cc: 5.2+ <stable@vger.kernel.org> # 5.2+
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
[ rjw: Changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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This provides an alternative mechanism for AP VLAN support where a
single netdev is used with VLAN tagged frames instead of separate
netdevs for each VLAN without tagged frames from the WLAN driver.
By setting NL80211_EXT_FEATURE_VLAN_OFFLOAD flag the driver indicates
support for a single netdev with VLAN tagged frames. Separate
VLAN-specific netdevs can be added using RTM_NEWLINK/IFLA_VLAN_ID
similarly to Ethernet. NL80211_CMD_NEW_KEY (for group keys),
NL80211_CMD_NEW_STATION, and NL80211_CMD_SET_STATION will optionally
specify vlan_id using NL80211_ATTR_VLAN_ID.
Signed-off-by: Gurumoorthi Gnanasambandhan <gguru@codeaurora.org>
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Link: https://lore.kernel.org/r/20191031214640.5012-1-jouni@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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To implement airtime queue limiting, we need to keep a running account of
the estimated airtime of all skbs queued into the device. Do to this
correctly, we need to store the airtime estimate into the skb so we can
decrease the outstanding balance when the skb is freed. This means that the
time estimate must be stored somewhere that will survive for the lifetime
of the skb.
To get this, decrease the size of the ack_frame_id field to 6 bits, and
lower the size of the ID space accordingly. This leaves 10 bits for use for
tx_time_est, which is enough to store a maximum of 4096 us, if we shift the
values so they become units of 4us.
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/r/157182474063.150713.16132669599100802716.stgit@toke.dk
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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We've already parsed the same data in the caller, so we can
pass it. The only thing is that we might fill in more details
in ieee80211_assoc_success(), but that doesn't bother the
caller, so it's fine to do even when we share the parsed data.
This reduces the stack space usage of the call stack here,
Arnd reported it had grown above the 1024 byte warning limit.
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20191028125240.cb7661671bd2.I757c8752bf4f2f35e54f5e0a2c0a9cd9216c3d8b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This patch moves the code handling SKBTX_WIFI_STATUS inside the TX path
into an extra function. This allows us to reuse it inside the 802.11 encap
offloading datapath.
Signed-off-by: John Crispin <john@phrozen.org>
Link: https://lore.kernel.org/r/20191029091304.7330-2-john@phrozen.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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It is more clear to use DEFINE_DEBUGFS_ATTRIBUTE to define debugfs file
operation rather than DEFINE_SIMPLE_ATTRIBUTE.
It is detected with the help of coccinelle.
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Link: https://lore.kernel.org/r/1572404462-45462-1-git-send-email-zhongjiang@huawei.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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In the first 5 minutes after boot (time of INITIAL_JIFFIES),
ieee80211_sta_last_active() returns zero if last_ack is zero. This
leads to "inactive time" showing jiffies_to_msecs(jiffies).
# iw wlan0 station get fc:ec:da:64:a6:dd
Station fc:ec:da:64:a6:dd (on wlan0)
inactive time: 4294894049 ms
.
.
connected time: 70 seconds
Fix by returning last_rx if last_ack == 0.
Signed-off-by: Ahmed Zaki <anzaki@gmail.com>
Link: https://lore.kernel.org/r/20191031121243.27694-1-anzaki@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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The FQ implementation used by mac80211 allocates memory using kmalloc(),
which can fail; and Johannes reported that this actually happens in
practice.
To avoid this, switch the allocation to kvmalloc() instead; this also
brings fq_impl in line with all the FQ qdiscs.
Fixes: 557fc4a09803 ("fq: add fair queuing framework")
Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/r/20191105155750.547379-1-toke@redhat.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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If ieee80211_txq_setup_flows() fails, we don't clean up LED
state properly, leading to crashes later on, fix that.
Fixes: dc8b274f0952 ("mac80211: Move up init of TXQs")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Link: https://lore.kernel.org/r/20191105154110.1ccf7112ba5d.I0ba865792446d051867b33153be65ce6b063d98c@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Currently, we scan over all network namespaces at each received
discovery message in order to check if the sending peer might be
present in a host local namespaces.
This is unnecessary since we can assume that a peer will not change its
location during an established session.
We now improve the condition for this testing so that we don't perform
any redundant scans.
Fixes: f73b12812a3d ("tipc: improve throughput between nodes in netns")
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Hoang Le <hoang.h.le@dektech.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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skb_peek_tail() can be used without protection of a lock,
as spotted by KCSAN [1]
In order to avoid load-stearing, add a READ_ONCE()
Note that the corresponding WRITE_ONCE() are already there.
[1]
BUG: KCSAN: data-race in sk_wait_data / skb_queue_tail
read to 0xffff8880b36a4118 of 8 bytes by task 20426 on cpu 1:
skb_peek_tail include/linux/skbuff.h:1784 [inline]
sk_wait_data+0x15b/0x250 net/core/sock.c:2477
kcm_wait_data+0x112/0x1f0 net/kcm/kcmsock.c:1103
kcm_recvmsg+0xac/0x320 net/kcm/kcmsock.c:1130
sock_recvmsg_nosec net/socket.c:871 [inline]
sock_recvmsg net/socket.c:889 [inline]
sock_recvmsg+0x92/0xb0 net/socket.c:885
___sys_recvmsg+0x1a0/0x3e0 net/socket.c:2480
do_recvmmsg+0x19a/0x5c0 net/socket.c:2601
__sys_recvmmsg+0x1ef/0x200 net/socket.c:2680
__do_sys_recvmmsg net/socket.c:2703 [inline]
__se_sys_recvmmsg net/socket.c:2696 [inline]
__x64_sys_recvmmsg+0x89/0xb0 net/socket.c:2696
do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x44/0xa9
write to 0xffff8880b36a4118 of 8 bytes by task 451 on cpu 0:
__skb_insert include/linux/skbuff.h:1852 [inline]
__skb_queue_before include/linux/skbuff.h:1958 [inline]
__skb_queue_tail include/linux/skbuff.h:1991 [inline]
skb_queue_tail+0x7e/0xc0 net/core/skbuff.c:3145
kcm_queue_rcv_skb+0x202/0x310 net/kcm/kcmsock.c:206
kcm_rcv_strparser+0x74/0x4b0 net/kcm/kcmsock.c:370
__strp_recv+0x348/0xf50 net/strparser/strparser.c:309
strp_recv+0x84/0xa0 net/strparser/strparser.c:343
tcp_read_sock+0x174/0x5c0 net/ipv4/tcp.c:1639
strp_read_sock+0xd4/0x140 net/strparser/strparser.c:366
do_strp_work net/strparser/strparser.c:414 [inline]
strp_work+0x9a/0xe0 net/strparser/strparser.c:423
process_one_work+0x3d4/0x890 kernel/workqueue.c:2269
worker_thread+0xa0/0x800 kernel/workqueue.c:2415
kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352
Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 451 Comm: kworker/u4:3 Not tainted 5.4.0-rc3+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: kstrp strp_work
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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KCSAN reported a data-race [1]
While we can use READ_ONCE() on the read sides,
we need to make sure hh->hh_len is written last.
[1]
BUG: KCSAN: data-race in eth_header_cache / neigh_resolve_output
write to 0xffff8880b9dedcb8 of 4 bytes by task 29760 on cpu 0:
eth_header_cache+0xa9/0xd0 net/ethernet/eth.c:247
neigh_hh_init net/core/neighbour.c:1463 [inline]
neigh_resolve_output net/core/neighbour.c:1480 [inline]
neigh_resolve_output+0x415/0x470 net/core/neighbour.c:1470
neigh_output include/net/neighbour.h:511 [inline]
ip6_finish_output2+0x7a2/0xec0 net/ipv6/ip6_output.c:116
__ip6_finish_output net/ipv6/ip6_output.c:142 [inline]
__ip6_finish_output+0x2d7/0x330 net/ipv6/ip6_output.c:127
ip6_finish_output+0x41/0x160 net/ipv6/ip6_output.c:152
NF_HOOK_COND include/linux/netfilter.h:294 [inline]
ip6_output+0xf2/0x280 net/ipv6/ip6_output.c:175
dst_output include/net/dst.h:436 [inline]
NF_HOOK include/linux/netfilter.h:305 [inline]
ndisc_send_skb+0x459/0x5f0 net/ipv6/ndisc.c:505
ndisc_send_ns+0x207/0x430 net/ipv6/ndisc.c:647
rt6_probe_deferred+0x98/0xf0 net/ipv6/route.c:615
process_one_work+0x3d4/0x890 kernel/workqueue.c:2269
worker_thread+0xa0/0x800 kernel/workqueue.c:2415
kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352
read to 0xffff8880b9dedcb8 of 4 bytes by task 29572 on cpu 1:
neigh_resolve_output net/core/neighbour.c:1479 [inline]
neigh_resolve_output+0x113/0x470 net/core/neighbour.c:1470
neigh_output include/net/neighbour.h:511 [inline]
ip6_finish_output2+0x7a2/0xec0 net/ipv6/ip6_output.c:116
__ip6_finish_output net/ipv6/ip6_output.c:142 [inline]
__ip6_finish_output+0x2d7/0x330 net/ipv6/ip6_output.c:127
ip6_finish_output+0x41/0x160 net/ipv6/ip6_output.c:152
NF_HOOK_COND include/linux/netfilter.h:294 [inline]
ip6_output+0xf2/0x280 net/ipv6/ip6_output.c:175
dst_output include/net/dst.h:436 [inline]
NF_HOOK include/linux/netfilter.h:305 [inline]
ndisc_send_skb+0x459/0x5f0 net/ipv6/ndisc.c:505
ndisc_send_ns+0x207/0x430 net/ipv6/ndisc.c:647
rt6_probe_deferred+0x98/0xf0 net/ipv6/route.c:615
process_one_work+0x3d4/0x890 kernel/workqueue.c:2269
worker_thread+0xa0/0x800 kernel/workqueue.c:2415
kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 29572 Comm: kworker/1:4 Not tainted 5.4.0-rc6+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events rt6_probe_deferred
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Eric Dumazet says:
====================
net: introduce u64_stats_t
KCSAN found a data-race in per-cpu u64 stats accounting.
(The stack traces are included in the 8th patch :
tun: switch to u64_stats_t)
This patch series first consolidate code in five patches.
Then the last three patches address the data-race resolution.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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In order to fix the data-race found by KCSAN, we
can use the new u64_stats_t type and its accessors instead
of plain u64 fields. This will still generate optimal code
for both 32 and 64 bit platforms.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In order to fix this data-race found by KCSAN [1],
switch to u64_stats_t helpers. They provide all
the needed annotations, without adding extra cost.
[1]
BUG: KCSAN: data-race in tun_get_user / tun_net_get_stats64
read to 0xffffe8ffffd8aca8 of 8 bytes by task 4882 on cpu 0:
tun_net_get_stats64+0x9b/0x230 drivers/net/tun.c:1171
dev_get_stats+0x89/0x1e0 net/core/dev.c:9103
rtnl_fill_stats+0x56/0x370 net/core/rtnetlink.c:1177
rtnl_fill_ifinfo+0xd3b/0x2100 net/core/rtnetlink.c:1667
rtmsg_ifinfo_build_skb+0xb0/0x150 net/core/rtnetlink.c:3472
rtmsg_ifinfo_event.part.0+0x4e/0xb0 net/core/rtnetlink.c:3504
rtmsg_ifinfo_event net/core/rtnetlink.c:3515 [inline]
rtmsg_ifinfo+0x85/0x90 net/core/rtnetlink.c:3513
__dev_notify_flags+0x18b/0x200 net/core/dev.c:7649
dev_change_flags+0xb8/0xe0 net/core/dev.c:7691
dev_ifsioc+0x201/0x6a0 net/core/dev_ioctl.c:237
dev_ioctl+0x149/0x660 net/core/dev_ioctl.c:489
sock_do_ioctl+0xdb/0x230 net/socket.c:1061
sock_ioctl+0x3a3/0x5e0 net/socket.c:1189
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:509 [inline]
do_vfs_ioctl+0x991/0xc60 fs/ioctl.c:696
write to 0xffffe8ffffd8aca8 of 8 bytes by task 4883 on cpu 1:
tun_get_user+0x1d94/0x2ba0 drivers/net/tun.c:2002
tun_chr_write_iter+0x79/0xd0 drivers/net/tun.c:2022
call_write_iter include/linux/fs.h:1895 [inline]
new_sync_write+0x388/0x4a0 fs/read_write.c:483
__vfs_write+0xb1/0xc0 fs/read_write.c:496
__kernel_write+0xb8/0x240 fs/read_write.c:515
write_pipe_buf+0xb6/0xf0 fs/splice.c:794
splice_from_pipe_feed fs/splice.c:500 [inline]
__splice_from_pipe+0x248/0x480 fs/splice.c:624
splice_from_pipe+0xbb/0x100 fs/splice.c:659
default_file_splice_write+0x45/0x90 fs/splice.c:806
do_splice_from fs/splice.c:848 [inline]
direct_splice_actor+0xa0/0xc0 fs/splice.c:1020
splice_direct_to_actor+0x215/0x510 fs/splice.c:975
do_splice_direct+0x161/0x1e0 fs/splice.c:1063
do_sendfile+0x384/0x7f0 fs/read_write.c:1464
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 4883 Comm: syz-executor.1 Not tainted 5.4.0-rc3+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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On 64bit arches, struct u64_stats_sync is empty and provides
no help against load/store tearing.
Using READ_ONCE()/WRITE_ONCE() would be needed.
But the update side would be slightly more expensive.
local64_t was defined so that we could use regular adds
in a manner which is atomic wrt IRQs.
However the u64_stats infra means we do not have to use
local64_t on 32bit arches since the syncp provides the needed
protection.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This driver can simply use the common infrastructure instead
of duplicating it.
This cleanup will ease u64_stats_t adoption in a single location.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This cleanup will ease u64_stats_t adoption in a single location.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This cleanup will ease u64_stats_t adoption in a single location.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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No need to hand-code the exact same functions.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Many network drivers need it and hand-coded the same function.
In order to ease u64_stats_t adoption, it is time to factorize.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Many network drivers use hand-coded implementation of the same thing,
let's factorize things so that u64_stats_t adoption is done once.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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