Commit Graph

967672 Commits

Author SHA1 Message Date
Jakub Kicinski
f8fd36b95e Some updates:
* injection/radiotap updates for new test capabilities
  * remove WDS support - even years ago when we turned
    it off by default it was already basically unusable
  * support for HE (802.11ax) rates for beacons
  * support for some vendor-specific HE rates
  * many other small features/cleanups
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEH1e1rEeCd0AIMq6MB8qZga/fl8QFAl+uSqIACgkQB8qZga/f
 l8QBOw/6AwlcQWMjqdb6H/QRORA81E4tX2+alHbeBai7KSI+9E1Jtakmn5qKQ4iH
 IjpNWPsclj4zKhgbKaariIn/bZEk8OhzmDpssnHTMpuo3iuCmuzFaDdZd9Uun2Ad
 tr3bqfHaom1MhWRF/FuBSHcnk599qRnsk+RY7/6dhjiPlWOWJvsfpuo1KblVoFWU
 wYDX+W2oYDAx44O/6AGJ0Zctwf6m7Kyzb2aMIqv2fwacBoDvyVdTIT/4NroV9INI
 QvIY4Gi8hoCDQX39zwaxSWOq7uFLYHwUozzZxktS5c4N3eSVFs80jmdiQiMKmKRQ
 A+R+ZcuFBcC+6+Wt4x+20T2mF6pUvSaIDA4jegCbDL4jQlp+023XTMlV42cnpP0z
 hFZgBWJszLnLtj4KW/v3sXefZ1Pxl0WD4BHNqz8SMzMUaWalrXP4Gt2bnjB7Bx1N
 2M/DjW570eNZeZ9ZFcvkwHysCWMzHKmh5sPXnOitrs4s2hweIrO7wnMlYVLAGF1J
 m8jUoqpI9Cc7dFEg0inaSIddcjobcx9i2eG14zaZnXj0t8WqAbQqI0Lw/mipWXFY
 7DfdjFULI+Yru46TAFbiisFo/2dlijxrIr3d3QK21Cwklb3BPhpiDf83q6HYhNpB
 xPs38OCZaNdSL7TwNRcuZ2jmBCf+48SYgse85HQOgdD2QzJv6dU=
 =TGgF
 -----END PGP SIGNATURE-----

Merge tag 'mac80211-next-for-net-next-2020-11-13' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg says:

====================
Some updates:
 * injection/radiotap updates for new test capabilities
 * remove WDS support - even years ago when we turned
   it off by default it was already basically unusable
 * support for HE (802.11ax) rates for beacons
 * support for some vendor-specific HE rates
 * many other small features/cleanups

* tag 'mac80211-next-for-net-next-2020-11-13' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next: (21 commits)
  nl80211: fix kernel-doc warning in the new SAE attribute
  cfg80211: remove WDS code
  mac80211: remove WDS-related code
  rt2x00: remove WDS code
  b43legacy: remove WDS code
  b43: remove WDS code
  carl9170: remove WDS code
  ath9k: remove WDS code
  wireless: remove CONFIG_WIRELESS_WDS
  mac80211: assure that certain drivers adhere to DONT_REORDER flag
  mac80211: don't overwrite QoS TID of injected frames
  mac80211: adhere to Tx control flag that prevents frame reordering
  mac80211: add radiotap flag to assure frames are not reordered
  mac80211: save HE oper info in BSS config for mesh
  cfg80211: add support to configure HE MCS for beacon rate
  nl80211: fix beacon tx rate mask validation
  nl80211/cfg80211: fix potential infinite loop
  cfg80211: Add support to calculate and report 4096-QAM HE rates
  cfg80211: Add support to configure SAE PWE value to drivers
  ieee80211: Add definition for WFA DPP
  ...
====================

Link: https://lore.kernel.org/r/20201113101148.25268-1-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-13 12:03:22 -08:00
Jakub Kicinski
e1d9d7b913 Merge https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 16:54:48 -08:00
Guillaume Nault
e865802357 selftests: set conf.all.rp_filter=0 in bareudp.sh
When working on the rp_filter problem, I didn't realise that disabling
it on the network devices didn't cover all cases: rp_filter could also
be enabled globally in the namespace, in which case it would drop
packets, even if the net device has rp_filter=0.

Fixes: 1ccd58331f ("selftests: disable rp_filter when testing bareudp")
Fixes: bbbc7aa45e ("selftests: add test script for bareudp tunnels")
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Link: https://lore.kernel.org/r/f2d459346471f163b239aa9d63ce3e2ba9c62895.1605107012.git.gnault@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 16:14:38 -08:00
Jakub Kicinski
e7086213f7 Merge branch 'mlxsw-spectrum-prepare-for-xm-implementation-prefix-insertion-and-removal'
Ido Schimmel says:

====================
mlxsw: spectrum: Prepare for XM implementation - prefix insertion and removal

Jiri says:

This is a preparation patchset for follow-up support of boards with
extended mezzanine (XM), which is going to allow extended (scale-wise)
router offload.

XM requires a separate PRM register named XMDR to be used instead of
RALUE to insert/update/remove FIB entries. Therefore, this patchset
extends the previously introduces low-level ops to be able to have
XM-specific FIB entry config implementation.

Currently the existing original RALUE implementation is moved to "basic"
low-level ops.

Unlike legacy router, insertion/update/removal of FIB entries into XM
could be done in bulks up to 4 items in a single PRM register write.
That is why this patchset implements "an op context", that allows the
future XM ops implementation to squash multiple FIB events to single
register write. For that, the way in which the FIB events are processed
by the work queue has to be changed.

The conversion from 1:1 FIB event - work callback call to event queue is
implemented in patch #3.

Patch #4 introduces "an op context" that will allow in future to squash
multiple FIB events into one XMDR register write. Patch #12 converts it
from stack to be allocated per instance.

Existing RALUE manipulations are pushed to ops in patch #10.

Patch #13 is introducing a possibility for low-level implementation to
have per FIB entry private memory.

The rest of the patches are either cosmetics or smaller preparations.
====================

Link: https://lore.kernel.org/r/20201110094900.1920158-1-idosch@idosch.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 15:55:26 -08:00
Jiri Pirko
173f14cda3 mlxsw: spectrum_router: Introduce FIB entry update op
Follow-up patchset introducing XMDR implementation is going to need
to distinguish write and update ops. Therefore introduce "update op"
and call "write op" only when new FIB entry is inserted.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 15:55:22 -08:00
Jiri Pirko
a005a7fe2f mlxsw: spectrum_router: Track FIB entry committed state and skip uncommitted on delete
In case bulking is used, the entry that was previously added may not
be yet committed to the HW as it waits in the queue for bulk send. For
such entries, skip the deletion.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 15:55:22 -08:00
Jiri Pirko
ae9ce81aa7 mlxsw: spectrum_router: Introduce fib_entry priv for low-level ops
Prepare for the low-level ops that need to store some data alongside
the fib_entry and introduce a per-fib_entry priv for ll ops.
The priv is reference counted as in the follow-up patch it is going
to be saved in pack() function and used later on in commit() even in
case the related fib_entry gets freed in the middle.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 15:55:21 -08:00
Jiri Pirko
91d20d71b2 mlxsw: spectrum_router: Have FIB entry op context allocated for the instance
Get the max size needed for FIB entry op context and allocate it once
for the instance. Use it repeatedly from the scheduled work.
By this, allow to extend the context to hold more data than it is wise
to do when it was on the stack. Make sure to signalize that the context
needs to be initialized in case families of subsequent FIB entries differ.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 15:55:21 -08:00
Jiri Pirko
505cd65c66 mlxsw: spectrum_router: Prepare work context for possible bulking
For XMDR register it is possible to carry multiple FIB entry
operations in a single write. However the FW does not restrict mixing
the types of operations, make the code easier and indicate the bulking
is ok only in case the bulk contains FIB operations of the same family
and event.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 15:55:21 -08:00
Jiri Pirko
7f5c4090e4 mlxsw: spectrum: Push RALUE packing and writing into low-level router ops
With follow-up introduction of XM implementation, XMDR register is
going to be optionally used instead of RALUE register. Push the RALUE
packing helpers and write call into low-level router ops.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 15:55:21 -08:00
Jiri Pirko
1a9c21d5f7 mlxsw: spectrum_router: Use RALUE pack helper from abort function
Unify the RALUE register payload packing and use the
__mlxsw_sp_fib_entry_ralue_pack() helper from
__mlxsw_sp_router_set_abort_trap().

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 15:55:21 -08:00
Jiri Pirko
1a7fcdf75d mlxsw: reg: Allow to pass NULL pointer to mlxsw_reg_ralue_pack4/6()
In preparation for the change that is going to be done in the next
patch, allow to pass NULL pointer to mlxsw_reg_ralue_pack4() and
mlxsw_reg_ralue_pack6() helpers.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 15:55:20 -08:00
Jiri Pirko
0c1d6b2694 mlxsw: spectrum_router: Pass destination IP as a pointer to mlxsw_reg_ralue_pack4()
Instead of passing destination IP as a u32 value, pass it as pointer to
u32. Avoid using local variable for the pointer store.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 15:55:20 -08:00
Jiri Pirko
d271cf9f29 mlxsw: spectrum: Export RALUE pack helper and use it from IPIP
As the RALUE packing is going to be put into op, make the user from
IPIP code use the same helper as the router code does.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 15:55:20 -08:00
Jiri Pirko
0f6b66011a mlxsw: spectrum_router: Push out RALUE pack into separate helper
As the RALUE packing is going to be pushed into an op, in preparation
for that push the code into a separate function in the meantime.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 15:55:20 -08:00
Jiri Pirko
2d5bd7a111 mlxsw: spectrum: Propagate context from work handler containing RALUE payload
Currently, RALUE payload is defined locally in the function that is
calling the register write. With introduction of alternative register to
RALUE, XMDR, it has to be possible to put multiple FIB entry
operations into single register write.

So in order to prepare for that, have per-work entry operation context
and propagate it all the way down to the functions writing RALUE.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 15:55:19 -08:00
Jiri Pirko
c1b290d594 mlxsw: spectrum_router: Introduce FIB event queue instead of separate works
Currently, every FIB event is queued-up as a separate work to be
processed. However, that allows to process only one FIB entry per work
callback.

In preparation of future XMDR register bulking of multiple FIB entries,
convert to FIB event queue. Implement this by a list_head, adding new
events to the end of the list in the FIB notify callback. That allows to
process multiple events from the list inside the work callback.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 15:55:19 -08:00
Jiri Pirko
d57ff02286 mlxsw: spectrum_router: Use RALUE-independent op arg
Since the write/delete of FIB entry is going to be implemented by XMDR
register for XM implementation, introduce RALUE-independent enum for op
so the enum could be used in both RALUE and XMDR.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 15:55:19 -08:00
Jiri Pirko
69ba53e72b mlxsw: spectrum_router: Pass non-register proto enum to __mlxsw_sp_router_set_abort_trap()
Don't pass RALXX register enum and rather pass enum mlxsw_sp_l3proto
to __mlxsw_sp_router_set_abort_trap(). This is in preparation to fib
entry pack implementation by XMDR register.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 15:55:19 -08:00
Randy Dunlap
85ce50d337 net: kcov: don't select SKB_EXTENSIONS when there is no NET
Fix kconfig warning when CONFIG_NET is not set/enabled:

WARNING: unmet direct dependencies detected for SKB_EXTENSIONS
  Depends on [n]: NET [=n]
  Selected by [y]:
  - KCOV [=y] && ARCH_HAS_KCOV [=y] && (CC_HAS_SANCOV_TRACE_PC [=y] || GCC_PLUGINS [=n])

Fixes: 6370cc3bbd ("net: add kcov handle to skb extensions")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Aleksandr Nogikh <nogikh@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20201110175746.11437-1-rdunlap@infradead.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 15:24:25 -08:00
Jakub Kicinski
255bf5e9d7 Merge branch 'net-switch-further-drivers-to-core-functionality-for-handling-per-cpu-byte-packet-counters'
Heiner Kallweit says:

====================
net: switch further drivers to core functionality for handling per-cpu byte/packet counters

Switch further drivers to core functionality for handling per-cpu
byte/packet counters. All changes are compile-tested only.
====================

Link: https://lore.kernel.org/r/5fbe3a1f-6625-eadc-b1c9-f76f78debb94@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 14:58:28 -08:00
Heiner Kallweit
323955a049 net: usb: switch to dev_get_tstats64 and remove usbnet_get_stats64 alias
Replace usbnet_get_stats64() with new identical core function
dev_get_tstats64() in all users and remove usbnet_get_stats64().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 14:58:27 -08:00
Heiner Kallweit
af0c351cc3 usbnet: switch to core handling of rx/tx byte/packet counters
Use netdev->tstats instead of a member of usbnet for storing a pointer
to the per-cpu counters. This allows us to use core functionality for
statistics handling.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 14:58:27 -08:00
Heiner Kallweit
45fc3fd430 qtnfmac: switch to core handling of rx/tx byte/packet counters
Use netdev->tstats instead of a member of qtnf_vif for storing a pointer
to the per-cpu counters. This allows us to use core functionality for
statistics handling.
The driver sets netdev->needs_free_netdev, therefore freeing the per-cpu
counters at the right point in time is a little bit tricky. Best option
seems to be to use the ndo_init/ndo_uninit callbacks.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 14:58:27 -08:00
Heiner Kallweit
2d5c27dafe qmi_wwan: switch to core handling of rx/tx byte/packet counters
Use netdev->tstats instead of a member of qmimux_priv for storing
a pointer to the per-cpu counters. This allows us to use core
functionality for statistics handling.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 14:58:26 -08:00
Heiner Kallweit
aa0616a9bd IB/hfi1: switch to core handling of rx/tx byte/packet counters
Use netdev->tstats instead of a member of hfi1_ipoib_dev_priv for storing
a pointer to the per-cpu counters. This allows us to use core
functionality for statistics handling.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 14:58:13 -08:00
Thierry Reding
c9f64d1fc1 net: ipconfig: Avoid spurious blank lines in boot log
When dumping the name and NTP servers advertised by DHCP, a blank line
is emitted if either of the lists is empty. This can lead to confusing
issues such as the blank line getting flagged as warning. This happens
because the blank line is the result of pr_cont("\n") and that may see
its level corrupted by some other driver concurrently writing to the
console.

Fix this by making sure that the terminating newline is only emitted
if at least one entry in the lists was printed before.

Reported-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20201110073757.1284594-1-thierry.reding@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 14:53:33 -08:00
Jakub Kicinski
203cb737fb Merge branch 'smsc-w-1-warning-fixes'
Andrew Lunn says:

====================
smsc W=1 warning fixes

Fixup various W=1 warnings, and then add COMPILE_TEST support, which
explains why these where missed on the previous pass.

v2:
Use while (0)
Rework buffer alignment to make it clearer

v3:
Access the length from the hardware and Use __always_unused to tell the
compiler we want to discard the value.
====================

Link: https://lore.kernel.org/r/20201110030248.1480413-1-andrew@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 14:49:43 -08:00
Andrew Lunn
7958ba7e62 drivers: net: smsc: Add COMPILE_TEST support
Improve the build testing of these SMSC drivers by enabling them when
COMPILE_TEST is selected.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 14:49:40 -08:00
Andrew Lunn
6e4a930c40 drivers: net: smc911x: Fix cast from pointer to integer of different size
drivers/net/ethernet/smsc/smc911x.c: In function ‘smc911x_hardware_send_pkt’:
drivers/net/ethernet/smsc/smc911x.c:471:11: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
  471 |  cmdA = (((u32)skb->data & 0x3) << 16) |

When built on 64bit targets, the skb->data pointer cannot be cast to a
u32 in a meaningful way. Use uintptr_t instead.

Suggested-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 14:49:40 -08:00
Andrew Lunn
dd5fdb3f97 drivers: net: smc911x: Fix passing wrong number of parameters to DBG() macro
Now that the compiler always sees the parameters passed to the DBG()
macro, it gives an error message about wrong parameters. The comment
says it all:

	/* ndev is not valid yet, so avoid passing it in. */
	DBG(SMC_DEBUG_FUNC, "--> %s\n",  __func__);

You cannot not just pass a parameter!

The DBG does not seem to have any real value, to just remove it.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 14:49:40 -08:00
Andrew Lunn
40f6d1d915 drivers: net: smc911x: Fix set but unused status because of DBG macro
drivers/net/ethernet/smsc/smc911x.c: In function ‘smc911x_timeout’:
drivers/net/ethernet/smsc/smc911x.c:1251:6: warning: variable ‘status’ set but not used [-Wunused-but-set-variable]
 1251 |  int status, mask;

The status is read in order to print it via the DBG macro. However,
due to the way DBG is disabled, the compiler never sees it being used.

Change the DBG macro to actually make use of the passed parameters,
and the leave the optimiser to remove the unwanted code inside the
while (0).

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 14:49:39 -08:00
Andrew Lunn
6015e6f2ef drivers: net: smc911x: Work around set but unused status
drivers/net/ethernet/smsc/smc911x.c: In function ‘smc911x_phy_interrupt’:
drivers/net/ethernet/smsc/smc911x.c:976:6: warning: variable ‘status’ set but not used [-Wunused-but-set-variable]
  976 |  int status;

A comment indicates the status needs to be read from the PHY,
otherwise bad things happen. But due to the macro magic, it is hard to
perform the read without assigning it to a variable. So add
_always_unused attribute to status to tell the compiler we don't
expect to use the value.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 14:49:39 -08:00
Andrew Lunn
606ddf1f04 drivers: net: smc91x: Fix missing kerneldoc reported by W=1
drivers/net/ethernet/smsc/smc91x.c:2199: warning: Function parameter or member 'dev' not described in 'try_toggle_control_gpio'
drivers/net/ethernet/smsc/smc91x.c:2199: warning: Function parameter or member 'desc' not described in 'try_toggle_control_gpio'
drivers/net/ethernet/smsc/smc91x.c:2199: warning: Function parameter or member 'name' not described in 'try_toggle_control_gpio'
drivers/net/ethernet/smsc/smc91x.c:2199: warning: Function parameter or member 'index' not described in 'try_toggle_control_gpio'
drivers/net/ethernet/smsc/smc91x.c:2199: warning: Function parameter or member 'value' not described in 'try_toggle_control_gpio'
drivers/net/ethernet/smsc/smc91x.c:2199: warning: Function parameter or member 'nsdelay' not described in 'try_toggle_control_gpio'

Document these parameters.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 14:49:39 -08:00
Andrew Lunn
5b320b5343 drivers: net: smc91x: Fix set but unused W=1 warning
drivers/net/ethernet/smsc/smc91x.c:706:51: warning: variable ‘pkt_len’ set but not used [-Wunused-but-set-variable]
  706 |  unsigned int saved_packet, packet_no, tx_status, pkt_len;

The read of the packet length in the descriptor probably needs to be
kept in order to keep the hardware happy. So tell the compiler we
don't expect to use the value by using the __always_unused attribute.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 14:49:39 -08:00
Menglong Dong
cef211968c net: udp: remove redundant initialization in udp_gro_complete
The initialization for 'err' with '-ENOSYS' is redundant and
can be removed, as it is updated soon and not used.

Changes since v1:
- Move the err declaration below struct sock *sk

Signed-off-by: Menglong Dong <dong.menglong@zte.com.cn>
Link: https://lore.kernel.org/r/5faa01d5.1c69fb81.8451c.cb5b@mx.google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 14:46:00 -08:00
Jakub Kicinski
8fc72cb541 Merge branch 'xilinx_emaclite-w-1-fixes'
Andrew Lunn says:

====================
xilinx_emaclite W=1 fixes

kerneldoc, pointer issues, and add COMPILE_TEST support to easy
finding future issues via build testing.

v2:
 - Use uintptr_t instead of long
 - Added Acked-by's.
====================

Link: https://lore.kernel.org/r/20201110024024.1479741-1-andrew@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 14:33:14 -08:00
Andrew Lunn
03dfd15767 drivers: net: xilinx_emaclite: Add COMPILE_TEST support
To improve build testing of this driver, add COMPILE_TEST support.

Acked-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 14:32:31 -08:00
Andrew Lunn
eccd540381 drivers: net: xilinx_emaclite: Fix -Wpointer-to-int-cast warnings with W=1
drivers/net/ethernet//xilinx/xilinx_emaclite.c:341:35: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
  341 |   addr = (void __iomem __force *)((u32 __force)addr ^

Use uintptr_t instead of u32 to avoid problems on 64 bit systems.

Also, cast the address to an unsigned long for printing.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 14:32:31 -08:00
Andrew Lunn
27b4255798 drivers: net: xilinx_emaclite: Add missing parameter kerneldoc
The txqueue parameter to the watchdog callback is unused in this
driver. But it still needs to be documented.

Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 14:32:30 -08:00
Linus Torvalds
db7c953555 Networking fixes for 5.10-rc4, including fixes from the bpf subtree.
Current release - regressions:
 
  - arm64: dts: fsl-ls1028a-kontron-sl28: specify in-band mode for ENETC
 
 Current release - bugs in new features:
 
  - mptcp: provide rmem[0] limit offset to fix oops
 
 Previous release - regressions:
 
  - IPv6: Set SIT tunnel hard_header_len to zero to fix path MTU
    calculations
 
  - lan743x: correctly handle chips with internal PHY
 
  - bpf: Don't rely on GCC __attribute__((optimize)) to disable GCSE
 
  - mlx5e: Fix VXLAN port table synchronization after function reload
 
 Previous release - always broken:
 
  - bpf: Zero-fill re-used per-cpu map element
 
  - net: udp: fix out-of-order packets when forwarding with UDP GSO
              fraglists turned on
    - fix UDP header access on Fast/frag0 UDP GRO
    - fix IP header access and skb lookup on Fast/frag0 UDP GRO
 
  - ethtool: netlink: add missing netdev_features_change() call
 
  - net: Update window_clamp if SOCK_RCVBUF is set
 
  - igc: Fix returning wrong statistics
 
  - ch_ktls: fix multiple leaks and corner cases in Chelsio TLS offload
 
  - tunnels: Fix off-by-one in lower MTU bounds for ICMP/ICMPv6 replies
 
  - r8169: disable hw csum for short packets on all chip versions
 
  - vrf: Fix fast path output packet handling with async Netfilter rules
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEE6jPA+I1ugmIBA4hXMUZtbf5SIrsFAl+thbIACgkQMUZtbf5S
 Irsy0RAAhYIYDNMSkQhcVcQPMxbtStwgTtKrWxg/D2zh3Kg+B4oRgoNZnt9kmlHX
 Su/aRWbTWBkDIMxIWBfRsO3z5zSQm4yLG1FTlfsOcWzOJcsntCO8SzikyxtnEZK8
 Bpi7dOoKB6KF0V2YjM9AHh5fbXvS7KJfp/PjZ7Kpn5BEbFV8rKtIyiJxwXXZUr6O
 ddM9Om4i0zf+dmsY1HVEyowPQMVB3vbn8F3dPk3ZrD8NVa53NtvMRxHKSsourRbZ
 yp4LKZV+POKHPFglO4jhLymhyeiwb1qgA8wssk7EKu0bwPeOcER4Tpewh1ib4C/C
 sRRzj0Wlw6dyPCkyNKx23D7dF/DrnLmXLUBhGS2mu2htSlWOH6w6rFQoVSNGGy9T
 DKUlUVUPG80mgYdME6NLJ27GOGQzxoAvzWgpcL6dJs9jz8nQqABJeXvdjw/vc/XH
 AOaKy4VwE3qf0W106JpUb+a/q0RJf7w3o4c1vLc/AZwpshNBOsrJBqrTk2E5Nrhd
 mcQykaF++DbLPIyTqhHl0GpKapohThESyMvfc4WRBFBaCwgFdOY/t0Gz3GA2N8Jc
 fuq9NOB1bfouaFGfzdkZ7RZJi3lFqZfv/XiJCh/knp1/lHAQPo4TuADcFDsjeEc9
 yr48SRDnCqahAQ7bUP0b5i31SZzwAYb/HnwYuvf4LWFvHl9XG5A=
 =AKM7
 -----END PGP SIGNATURE-----

Merge tag 'net-5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Current release - regressions:

   - arm64: dts: fsl-ls1028a-kontron-sl28: specify in-band mode for
     ENETC

  Current release - bugs in new features:

   - mptcp: provide rmem[0] limit offset to fix oops

  Previous release - regressions:

   - IPv6: Set SIT tunnel hard_header_len to zero to fix path MTU
     calculations

   - lan743x: correctly handle chips with internal PHY

   - bpf: Don't rely on GCC __attribute__((optimize)) to disable GCSE

   - mlx5e: Fix VXLAN port table synchronization after function reload

  Previous release - always broken:

   - bpf: Zero-fill re-used per-cpu map element

   - fix out-of-order UDP packets when forwarding with UDP GSO fraglists
     turned on:
       - fix UDP header access on Fast/frag0 UDP GRO
       - fix IP header access and skb lookup on Fast/frag0 UDP GRO

   - ethtool: netlink: add missing netdev_features_change() call

   - net: Update window_clamp if SOCK_RCVBUF is set

   - igc: Fix returning wrong statistics

   - ch_ktls: fix multiple leaks and corner cases in Chelsio TLS offload

   - tunnels: Fix off-by-one in lower MTU bounds for ICMP/ICMPv6 replies

   - r8169: disable hw csum for short packets on all chip versions

   - vrf: Fix fast path output packet handling with async Netfilter
     rules"

* tag 'net-5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (65 commits)
  lan743x: fix use of uninitialized variable
  net: udp: fix IP header access and skb lookup on Fast/frag0 UDP GRO
  net: udp: fix UDP header access on Fast/frag0 UDP GRO
  devlink: Avoid overwriting port attributes of registered port
  vrf: Fix fast path output packet handling with async Netfilter rules
  cosa: Add missing kfree in error path of cosa_write
  net: switch to the kernel.org patchwork instance
  ch_ktls: stop the txq if reaches threshold
  ch_ktls: tcb update fails sometimes
  ch_ktls/cxgb4: handle partial tag alone SKBs
  ch_ktls: don't free skb before sending FIN
  ch_ktls: packet handling prior to start marker
  ch_ktls: Correction in middle record handling
  ch_ktls: missing handling of header alone
  ch_ktls: Correction in trimmed_len calculation
  cxgb4/ch_ktls: creating skbs causes panic
  ch_ktls: Update cheksum information
  ch_ktls: Correction in finding correct length
  cxgb4/ch_ktls: decrypted bit is not enough
  net/x25: Fix null-ptr-deref in x25_connect
  ...
2020-11-12 14:02:04 -08:00
Linus Torvalds
200f9d21aa NFS Client Bugfixes for Linux 5.10-rc4
- Stable fixes:
   - Fix failure to unregister shrinker
 
 - Other fixes:
   - Fix unnecessary locking to clear up some contention
   - Fix listxattr receive buffer size
   - Fix default mount options for nfsroot
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEEnZ5MQTpR7cLU7KEp18tUv7ClQOsFAl+tbGIACgkQ18tUv7Cl
 QOvRyxAA4YXD1dlnO2Xbqo7ZyrgoZkVn08rb9yloeCuCNJDZPDSXt2QHAKdbmMU+
 8dxpcWN/8RUEUJK3cccNf2+XV/AWqqaFnFXylcfXLUnjZx0f30ou+HO+BRZFInVd
 OgG3njO94jV1B3RK38J7jyVRqx3hd0Vkq9Ja4LVF2l/x9ueGrj+pOdNauWr1JhFo
 6l4Fk2PKakLKJGsxLXmKlBb7p+EEwKa1qRov8SED33uTZkSnbFOmbxtEp1bu7sQx
 UKBTLADny9FClA1sjM45XN2nLS99/uUl/CaRKm/GB5nP4WKG4J3HgziAAvVglHcP
 yrUIiwLaUGZvteiO5O6NJqZpk6NyzWnBo4ZDt/TZcQ5nvK7uD6buUbDFFn++lbKm
 qwVWCnsme7sx3zVLLS4pY2GXnNNkGozjyrQOV0NQx1QphfalKsXHxeXikY+dkXr5
 FZwKodWxiKlsZj8cyOVjrm9q3+EsBnW8FyitgVQH4QIvcU9Z9zdB5QFyy7KsG4bw
 3iKsbz4HsJ0K10m7ykNEcR5R6XQBnFVWGxAHkQ3qbxzw9hYvhEebP/N2P7x3DC1X
 3gVPDto03Vc5PsuGoXm50kqXpRD3w+fnpf+HMZFmRbqjanqBHvgyYu58Zy0fXEnQ
 VigUcvsjAJhmoneahO3va8HF3a70PPqhzTTVKtfORBNg9uHmS1M=
 =7a8T
 -----END PGP SIGNATURE-----

Merge tag 'nfs-for-5.10-2' of git://git.linux-nfs.org/projects/anna/linux-nfs

Pull NFS client bugfixes from Anna Schumaker:
 "Stable fixes:
  - Fix failure to unregister shrinker

  Other fixes:
  - Fix unnecessary locking to clear up some contention
  - Fix listxattr receive buffer size
  - Fix default mount options for nfsroot"

* tag 'nfs-for-5.10-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
  NFS: Remove unnecessary inode lock in nfs_fsync_dir()
  NFS: Remove unnecessary inode locking in nfs_llseek_dir()
  NFS: Fix listxattr receive buffer size
  NFSv4.2: fix failure to unregister shrinker
  nfsroot: Default mount option should ask for built-in NFS version
2020-11-12 13:49:12 -08:00
Linus Torvalds
af5043c89a ACPI updates for 5.10-rc4.
- Fix documentation regarding GPIO properties (Andy Shevchenko).
 
  - Fix spelling mistakes in ACPI documentation (Flavio Suligoi).
 
  - Fix white space inconsistencies in ACPI code (Maximilian Luz).
 
  - Fix string formatting in the ACPI Generic Event Device (GED)
    driver (Nick Desaulniers).
 
  - Add Intel Alder Lake device IDs to the ACPI drivers used by the
    Dynamic Platform and Thermal Framework (Srinivas Pandruvada).
 
  - Add lid-related DMI quirk for Medion Akoya E2228T to the ACPI
    button driver (Hans de Goede).
 -----BEGIN PGP SIGNATURE-----
 
 iQJGBAABCAAwFiEE4fcc61cGeeHD/fCwgsRv/nhiVHEFAl+tVekSHHJqd0Byand5
 c29ja2kubmV0AAoJEILEb/54YlRxoAQQAJOvpgaXEwAm64wLVCuJRllGWcMmufh5
 EdUb1JMZ4IKhnPLi6ZWvmOKDNkWyIqG5DgT0FILl5b5LgWOGtvqsZ5aTqOKDTJvJ
 57cMVXQHBna5+Zp9nL51XeQfDZukmVYaTxckdgaeltsal8/6Gfy/V6mkLlSl3a5L
 PkxxrDVa9M1SVg/aRsx//HKw3M4O/aGURR3kv6ao8DetMRNORbuY1pv2znWRSda/
 eMcNZXEyEwgekL34VKBJhxUD/pSjunV6qcUPin3lA8viaSjbaLkvdTteOVrlwu/S
 EE8wXfwDODPJT1PBvckobGjsQfHix0COK8MatkxUMEyLBG2LdHnHhV8fObQtAEuM
 wOf2Yz7LtCrSWVC9VOEMUKfIXbIpj4VHqOj7Oby+ymIrq5OaXxOmixwjaQh2HLgM
 XCCSicP9kk+UxiVK15gGF1veVqld7CA6SRm9cGHc94QJuTsvrl3p5E32UHz0CjkM
 l+CBIhOUE7cDq1AQ0ikJJmfdr152NzFILIbMAa+xjFgFmWZabOJszYGSlKl7FNnG
 xbYI4cR8uDsYR1Mjb66yhpdncSxThq3HkuX0zgvhEpclyfWm3Ocg+4ZhIhn9VHug
 Wj/dDjBQozNgGYvtUj085FzDCnVgarR4wjZ3QtubUEvMia1m7ssTrPSys9aE5Gwt
 RWqs7x9Feqw/
 =tUOl
 -----END PGP SIGNATURE-----

Merge tag 'acpi-5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fixes from Rafael Wysocki:
 "These are mostly docmentation fixes and janitorial changes plus some
  new device IDs and a new quirk.

  Specifics:

   - Fix documentation regarding GPIO properties (Andy Shevchenko)

   - Fix spelling mistakes in ACPI documentation (Flavio Suligoi)

   - Fix white space inconsistencies in ACPI code (Maximilian Luz)

   - Fix string formatting in the ACPI Generic Event Device (GED) driver
     (Nick Desaulniers)

   - Add Intel Alder Lake device IDs to the ACPI drivers used by the
     Dynamic Platform and Thermal Framework (Srinivas Pandruvada)

   - Add lid-related DMI quirk for Medion Akoya E2228T to the ACPI
     button driver (Hans de Goede)"

* tag 'acpi-5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: DPTF: Support Alder Lake
  Documentation: ACPI: fix spelling mistakes
  ACPI: button: Add DMI quirk for Medion Akoya E2228T
  ACPI: GED: fix -Wformat
  ACPI: Fix whitespace inconsistencies
  ACPI: scan: Fix acpi_dma_configure_id() kerneldoc name
  Documentation: firmware-guide: gpio-properties: Clarify initial output state
  Documentation: firmware-guide: gpio-properties: active_low only for GpioIo()
  Documentation: firmware-guide: gpio-properties: Fix factual mistakes
2020-11-12 11:06:53 -08:00
Linus Torvalds
fcfb67918c Power management fixes for 5.10-rc4.
Make the intel_pstate driver behave as expected when it operates in
 the passive mode with HWP enabled and the "powersave" governor on
 top of it.
 -----BEGIN PGP SIGNATURE-----
 
 iQJGBAABCAAwFiEE4fcc61cGeeHD/fCwgsRv/nhiVHEFAl+tVWUSHHJqd0Byand5
 c29ja2kubmV0AAoJEILEb/54YlRxNIwQALNj2uV+CJL4DCvcMPFqvtB7bwwsk1mS
 fqRk/wEhz5noE/x3uhD1DKlL3VPj1sDUVRmHKSdIgqrwSFX2zbw+cf2y6E94WdDz
 /7x0Khj4mT5cfGHacItNBnkglCrxVXxSdU4DcPTgINlWM8iv6W8D3uK5OpFYDtKr
 5shqf45U8/+fh7hGCtNnofAZEVU+YTDzY0jHnnIxD8FKXFLaDFj6jVGjgdXgBD5s
 /XgsKz867SybzLuTW9O0SKDughMhmhaqXnHwtu9jvlw/3i1Wn16r2LeCWyIkoxWy
 MRNXg4rOerJvK084gxJW9BWmCuA6NnKBtKvXNlqHzl14ept3Cf3dYtaQ50x7eYQB
 osMWbBDdRjV1fo7SptMXQmn8sKxZgrjc0pSYicbiMOH3BkpIn5ed4+MPWfWN8pyb
 piRkx17sFwPE7jI5Rkuv+EucisG8tNvWImE9gFENxtelF1rj7njV1xMYlevrD/9u
 aYTNYUeRAc6DA2AF/mzXtqwXpDqoxa7X0UBl8JFmkLvcvORtR3XY6HlcYMgp820a
 /Sh0rZmuUlssUnrhd1Kr6QRiMIrCihTnbhTXsY0oZH4QSYYJCS89qijngAtqobEt
 K+eqsHHoGmVK3Ch+O+YpFo+GpH5Avk0b/DisX3Zu20hGEX4fvv4q7ZTuNSnHhgOL
 ERjLBUQZUFaf
 =zh3K
 -----END PGP SIGNATURE-----

Merge tag 'pm-5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "Make the intel_pstate driver behave as expected when it operates in
  the passive mode with HWP enabled and the 'powersave' governor on top
  of it"

* tag 'pm-5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: intel_pstate: Take CPUFREQ_GOV_STRICT_TARGET into account
  cpufreq: Add strict_target to struct cpufreq_policy
  cpufreq: Introduce CPUFREQ_GOV_STRICT_TARGET
  cpufreq: Introduce governor flags
2020-11-12 11:03:38 -08:00
YueHaibing
95530a59db nfp: Fix passing zero to 'PTR_ERR'
nfp_cpp_from_nfp6000_pcie() returns ERR_PTR() and never returns
NULL. The NULL test should be removed, also return correct err.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Link: https://lore.kernel.org/r/20201112145852.6580-1-yuehaibing@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 10:11:12 -08:00
Sven Van Asbroeck
edbc21113b lan743x: fix use of uninitialized variable
When no devicetree is present, the driver will use an
uninitialized variable.

Fix by initializing this variable.

Fixes: 902a66e08c ("lan743x: correctly handle chips with internal PHY")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Sven Van Asbroeck <thesven73@gmail.com>
Link: https://lore.kernel.org/r/20201112152513.1941-1-TheSven73@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 10:03:16 -08:00
Jakub Kicinski
5861c8cb1c Merge branch 'net-udp-fix-fast-frag0-udp-gro'
Alexander Lobakin says:

====================
net: udp: fix Fast/frag0 UDP GRO

While testing UDP GSO fraglists forwarding through driver that uses
Fast GRO (via napi_gro_frags()), I was observing lots of out-of-order
iperf packets:

[ ID] Interval           Transfer     Bitrate         Jitter
[SUM]  0.0-40.0 sec  12106 datagrams received out-of-order

Simple switch to napi_gro_receive() or any other method without frag0
shortcut completely resolved them.

I've found two incorrect header accesses in GRO receive callback(s):
 - udp_hdr() (instead of udp_gro_udphdr()) that always points to junk
   in "fast" mode and could probably do this in "regular".
   This was the actual bug that caused all out-of-order delivers;
 - udp{4,6}_lib_lookup_skb() -> ip{,v6}_hdr() (instead of
   skb_gro_network_header()) that potentionally might return odd
   pointers in both modes.

Each patch addresses one of these two issues.

This doesn't cover a support for nested tunnels as it's out of the
subject and requires more invasive changes. It will be handled
separately in net-next series.

Credits:
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Willem de Bruijn <willemb@google.com>

Since v4 [0]:
 - split the fix into two logical ones (Willem);
 - replace ternaries with plain ifs to beautify the code (Jakub);
 - drop p->data part to reintroduce it later in abovementioned set.

Since v3 [1]:
 - restore the original {,__}udp{4,6}_lib_lookup_skb() and use
   private versions of them inside GRO code (Willem).

Since v2 [2]:
 - dropped redundant check introduced in v2 as it's performed right
   before (thanks to Eric);
 - udp_hdr() switched to data + off for skbs from list (also Eric);
 - fixed possible malfunction of {,__}udp{4,6}_lib_lookup_skb() with
   Fast/frag0 due to ip{,v6}_hdr() usage (Willem).

Since v1 [3]:
 - added a NULL pointer check for "uh" as suggested by Willem.

[0] https://lore.kernel.org/netdev/Ha2hou5eJPcblo4abjAqxZRzIl1RaLs2Hy0oOAgFs@cp4-web-036.plabs.ch
[1] https://lore.kernel.org/netdev/MgZce9htmEtCtHg7pmWxXXfdhmQ6AHrnltXC41zOoo@cp7-web-042.plabs.ch
[2] https://lore.kernel.org/netdev/0eaG8xtbtKY1dEKCTKUBubGiC9QawGgB3tVZtNqVdY@cp4-web-030.plabs.ch
[3] https://lore.kernel.org/netdev/YazU6GEzBdpyZMDMwJirxDX7B4sualpDG68ADZYvJI@cp4-web-034.plabs.ch
====================

Link: https://lore.kernel.org/r/hjGOh0iCOYyo1FPiZh6TMXcx3YCgNs1T1eGKLrDz8@cp4-web-037.plabs.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 09:55:59 -08:00
Alexander Lobakin
55e729889b net: udp: fix IP header access and skb lookup on Fast/frag0 UDP GRO
udp{4,6}_lib_lookup_skb() use ip{,v6}_hdr() to get IP header of the
packet. While it's probably OK for non-frag0 paths, this helpers
will also point to junk on Fast/frag0 GRO when all headers are
located in frags. As a result, sk/skb lookup may fail or give wrong
results. To support both GRO modes, skb_gro_network_header() might
be used. To not modify original functions, add private versions of
udp{4,6}_lib_lookup_skb() only to perform correct sk lookups on GRO.

Present since the introduction of "application-level" UDP GRO
in 4.7-rc1.

Misc: replace totally unneeded ternaries with plain ifs.

Fixes: a6024562ff ("udp: Add GRO functions to UDP socket")
Suggested-by: Willem de Bruijn <willemb@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 09:55:51 -08:00
Alexander Lobakin
4b1a86281c net: udp: fix UDP header access on Fast/frag0 UDP GRO
UDP GRO uses udp_hdr(skb) in its .gro_receive() callback. While it's
probably OK for non-frag0 paths (when all headers or even the entire
frame are already in skb head), this inline points to junk when
using Fast GRO (napi_gro_frags() or napi_gro_receive() with only
Ethernet header in skb head and all the rest in the frags) and breaks
GRO packet compilation and the packet flow itself.
To support both modes, skb_gro_header_fast() + skb_gro_header_slow()
are typically used. UDP even has an inline helper that makes use of
them, udp_gro_udphdr(). Use that instead of troublemaking udp_hdr()
to get rid of the out-of-order delivers.

Present since the introduction of plain UDP GRO in 5.0-rc1.

Fixes: e20cf8d3f1 ("udp: implement GRO for plain UDP sockets.")
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 09:55:43 -08:00
Jakub Kicinski
8a5c2906c5 Merge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue
Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2020-11-10

This series contains updates to i40e and igc drivers and the MAINTAINERS
file.

Slawomir fixes updating VF MAC addresses to fix various issues related
to reporting and setting of these addresses for i40e.

Dan Carpenter fixes a possible used before being initialized issue for
i40e.

Vinicius fixes reporting of netdev stats for igc.

Tony updates repositories for Intel Ethernet Drivers.

* '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
  MAINTAINERS: Update repositories for Intel Ethernet Drivers
  igc: Fix returning wrong statistics
  i40e, xsk: uninitialized variable in i40e_clean_rx_irq_zc()
  i40e: Fix MAC address setting for a VF via Host/VM
====================

Link: https://lore.kernel.org/r/20201111001955.533210-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 08:47:23 -08:00