platform/kernel/linux-starfive.git
16 months agomlxsw: spectrum_router: Link CRIFs to RIFs
Petr Machata [Thu, 22 Jun 2023 13:33:06 +0000 (15:33 +0200)]
mlxsw: spectrum_router: Link CRIFs to RIFs

When a RIF is about to be created, the registration of the netdevice that
it should be associated with must have been seen in the past, and a CRIF
created. Therefore make this a hard requirement by looking up the CRIF
during RIF creation, and complaining loudly when there isn't one.

This then allows to keep a link between a RIF and its corresponding
CRIF (and back, as the relationship is one-to-at-most-one), which do.

The CRIF will later be useful as the objects tracked there will be
offloaded lazily as a result of RIF creation.

CRIFs are created when an "interesting" netdevice is registered, and
destroyed after such device is unregistered. CRIFs are supposed to already
exist when a RIF creation request arises, and exist at least as long as
that RIF exists. This makes for a simple invariant: it is always safe to
dereference CRIF pointer from "its" RIF.

To guarantee this, CRIFs cannot be removed immediately when the UNREGISTER
event is delivered. The reason is that if a RIF's netdevices has an IPv6
address, removal of this address is notified in an atomic block. To remove
the RIF, the IPv6 removal handler schedules a work item. It must be safe
for this work item to access the associated CRIF as well.

Thus when a netdevice that backs the CRIF is removed, if it still has a
RIF, do not actually free the CRIF, only toggle its can_destroy flag, which
this patch adds. Later on, mlxsw_sp_rif_destroy() collects the CRIF.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Link: https://lore.kernel.org/r/68c8e33afa6b8c03c431b435e1685ffdff752e63.1687438411.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agomlxsw: spectrum_router: Maintain CRIF for fallback loopback RIF
Petr Machata [Thu, 22 Jun 2023 13:33:05 +0000 (15:33 +0200)]
mlxsw: spectrum_router: Maintain CRIF for fallback loopback RIF

CRIFs are generally not maintained for loopback RIFs. However, the RIF for
the default VRF is used for offloading of blackhole nexthops. Nexthops
expect to have a valid CRIF. Therefore in this patch, add code to maintain
CRIF for the loopback RIF as well.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Link: https://lore.kernel.org/r/7f2b2fcc98770167ed1254a904c3f7f585ba43f0.1687438411.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agomlxsw: spectrum_router: Maintain a hash table of CRIFs
Petr Machata [Thu, 22 Jun 2023 13:33:04 +0000 (15:33 +0200)]
mlxsw: spectrum_router: Maintain a hash table of CRIFs

CRIFs are objects that mlxsw maintains for netdevices that may not have an
associated RIF (i.e. they may not have been instantiated in the ASIC), but
if indeed they do not, it is quite possible they will in the future. These
netdevices are candidate RIFs, hence CRIFs. Netdevices for which CRIFs are
created include e.g. bridges, LAGs, or front panel ports. The idea is that
next hops would be kept at CRIFs, not RIFs, and thus it would be easier to
offload and unoffload the entities that have been added before the RIF was
created.

In this patch, add the code for low-level CRIF maintenance: create and
destroy, and keep in a table keyed by the netdevice pointer for easy
recall.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Link: https://lore.kernel.org/r/186d44e399c475159da20689f2c540719f2d1ed0.1687438411.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agomlxsw: spectrum_router: Use mlxsw_sp_ul_rif_get() to get main VRF LB RIF
Petr Machata [Thu, 22 Jun 2023 13:33:03 +0000 (15:33 +0200)]
mlxsw: spectrum_router: Use mlxsw_sp_ul_rif_get() to get main VRF LB RIF

The current function, mlxsw_sp_router_ul_rif_get(), is a wrapper around the
function mentioned in the subject. As such it forms an external interface
of the router code.

In future patches we will want to maintain connection between RIFs and the
CRIFs (introduced in the next patch) that back them. That will not hold
for the VRF-based loopback netdevices, so the whole CRIF business can be
kept hidden from the rest of mlxsw.

But for the main VRF loopback RIF we do want to keep the RIF-CRIF
connection, because that RIF is used for blackhole next hops, and the next
hop code can be kept simpler for assuming rif->crif is valid.

Hence, instead, call mlxsw_sp_ul_rif_get() to create the main VRF loopback
RIF. This being an internal function will take the CRIF argument anyway.
Furthermore, the function does not lock, which is not necessary at this
point in code yet.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Link: https://lore.kernel.org/r/7a39a011a02a84164cd7f5da7985ec5b2ae01ba5.1687438411.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agomlxsw: spectrum_router: Add extack argument to mlxsw_sp_lb_rif_init()
Petr Machata [Thu, 22 Jun 2023 13:33:02 +0000 (15:33 +0200)]
mlxsw: spectrum_router: Add extack argument to mlxsw_sp_lb_rif_init()

The extack will be handy in later patches.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Link: https://lore.kernel.org/r/e87ba300121010d580b80a281877573a7b1377ca.1687438411.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agodt-bindings: net: altr,tse: Fix error in "compatible" conditional schema
Rob Herring [Wed, 21 Jun 2023 23:10:12 +0000 (17:10 -0600)]
dt-bindings: net: altr,tse: Fix error in "compatible" conditional schema

The conditional if/then schema has an error as the "enum" values have
"const" in them. Drop the "const".

Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230621231012.3816139-1-robh@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
16 months agoMerge branch 's390-net-updates-2023-06-10'
Paolo Abeni [Fri, 23 Jun 2023 09:55:56 +0000 (11:55 +0200)]
Merge branch 's390-net-updates-2023-06-10'

Alexandra Winter says:

====================
s390/net: updates 2023-06-10

Please apply the following patch series for s390's ctcm and lcs drivers
to netdev's net-next tree.

Just maintenance patches, no functional changes.
====================

Link: https://lore.kernel.org/r/20230621134921.904217-1-wintera@linux.ibm.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
16 months agos390/ctcm: Convert sprintf/snprintf to scnprintf
Thorsten Winkler [Wed, 21 Jun 2023 13:49:21 +0000 (15:49 +0200)]
s390/ctcm: Convert sprintf/snprintf to scnprintf

This LWN article explains the why scnprintf is preferred over snprintf
in general
https://lwn.net/Articles/69419/
Ie. snprintf() returns what *would* be the resulting length, while
scnprintf() returns the actual length.

Note that ctcm_print_statistics() writes the data into the kernel log
and is therefore not suitable for sysfs_emit(). Observable behavior is
not changed, as there may be dependencies.

Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: Thorsten Winkler <twinkler@linux.ibm.com>
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
16 months agos390/ctcm: Convert sysfs sprintf to sysfs_emit
Thorsten Winkler [Wed, 21 Jun 2023 13:49:20 +0000 (15:49 +0200)]
s390/ctcm: Convert sysfs sprintf to sysfs_emit

Following the advice of the Documentation/filesystems/sysfs.rst.
All sysfs related show()-functions should only use sysfs_emit() or
sysfs_emit_at() when formatting the value to be returned to user space.

Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Thorsten Winkler <twinkler@linux.ibm.com>
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
16 months agos390/lcs: Convert sprintf to scnprintf
Thorsten Winkler [Wed, 21 Jun 2023 13:49:19 +0000 (15:49 +0200)]
s390/lcs: Convert sprintf to scnprintf

This LWN article explains the why scnprintf is preferred over snprintf
in general
https://lwn.net/Articles/69419/
Ie. snprintf() returns what *would* be the resulting length, while
scnprintf() returns the actual length.

Reported-by: Jules Irenge <jbi.octave@gmail.com>
Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: Thorsten Winkler <twinkler@linux.ibm.com>
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
16 months agos390/lcs: Convert sysfs sprintf to sysfs_emit
Thorsten Winkler [Wed, 21 Jun 2023 13:49:18 +0000 (15:49 +0200)]
s390/lcs: Convert sysfs sprintf to sysfs_emit

Following the advice of the Documentation/filesystems/sysfs.rst.
All sysfs related show()-functions should only use sysfs_emit() or
sysfs_emit_at() when formatting the value to be returned to user space.

While at it, follow Linux kernel coding style and unify indentation

Reported-by: Jules Irenge <jbi.octave@gmail.com>
Reported-by: Joe Perches <joe@perches.com>
Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Thorsten Winkler <twinkler@linux.ibm.com>
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
16 months agoMerge branch 'net-hns3-there-are-some-cleanup-for-the-hns3-ethernet-driver'
Paolo Abeni [Fri, 23 Jun 2023 08:59:21 +0000 (10:59 +0200)]
Merge branch 'net-hns3-there-are-some-cleanup-for-the-hns3-ethernet-driver'

Hao Lan says:

====================
net: hns3: There are some cleanup for the HNS3 ethernet driver

There are some cleanup for the HNS3 ethernet driver.
====================

Link: https://lore.kernel.org/r/20230621123309.34381-1-lanhao@huawei.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
16 months agonet: hns3: clear hns unused parameter alarm
Peiyang Wang [Wed, 21 Jun 2023 12:33:09 +0000 (20:33 +0800)]
net: hns3: clear hns unused parameter alarm

Several functions in the hns3 driver have unused parameters.
The compiler will warn about them when building
with -Wunused-parameter option of hns3.

Signed-off-by: Peiyang Wang <wangpeiyang1@huawei.com>
Signed-off-by: Hao Lan <lanhao@huawei.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
16 months agonet: hns3: fix strncpy() not using dest-buf length as length issue
Hao Chen [Wed, 21 Jun 2023 12:33:08 +0000 (20:33 +0800)]
net: hns3: fix strncpy() not using dest-buf length as length issue

Now, strncpy() in hns3_dbg_fill_content() use src-length as copy-length,
it may result in dest-buf overflow.

This patch is to fix intel compile warning for csky-linux-gcc (GCC) 12.1.0
compiler.

The warning reports as below:

hclge_debugfs.c:92:25: warning: 'strncpy' specified bound depends on
the length of the source argument [-Wstringop-truncation]

strncpy(pos, items[i].name, strlen(items[i].name));

hclge_debugfs.c:90:25: warning: 'strncpy' output truncated before
terminating nul copying as many bytes from a string as its length
[-Wstringop-truncation]

strncpy(pos, result[i], strlen(result[i]));

strncpy() use src-length as copy-length, it may result in
dest-buf overflow.

So,this patch add some values check to avoid this issue.

Signed-off-by: Hao Chen <chenhao418@huawei.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/lkml/202207170606.7WtHs9yS-lkp@intel.com/T/
Signed-off-by: Hao Lan <lanhao@huawei.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
16 months agonet: hns3: refine the tcam key convert handle
Jian Shen [Wed, 21 Jun 2023 12:33:07 +0000 (20:33 +0800)]
net: hns3: refine the tcam key convert handle

The result of expression '(k ^ ~v)  & k' is exactly
the same with  'k & v', so simplify it.
(k ^ ~v) & k == k & v
The truth table (in non table form):
k == 0, v == 0:
  (k ^ ~v) & k == (0 ^ ~0) & 0 == (0 ^ 1) & 0 == 1 & 0 == 0
  k & v == 0 & 0 == 0

k == 0, v == 1:
  (k ^ ~v) & k == (0 ^ ~1) & 0 == (0 ^ 0) & 0 == 1 & 0 == 0
  k & v == 0 & 1 == 0

k == 1, v == 0:
  (k ^ ~v) & k == (1 ^ ~0) & 1 == (1 ^ 1) & 1 == 0 & 1 == 0
  k & v == 1 & 0 == 0

k == 1, v == 1:
  (k ^ ~v) & k == (1 ^ ~1) & 1 == (1 ^ 0) & 1 == 1 & 1 == 1
  k & v == 1 & 1 == 1
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Hao Lan <lanhao@huawei.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
16 months agoMerge tag 'wireless-next-2023-06-22' of git://git.kernel.org/pub/scm/linux/kernel...
Jakub Kicinski [Fri, 23 Jun 2023 03:09:13 +0000 (20:09 -0700)]
Merge tag 'wireless-next-2023-06-22' of git://git./linux/kernel/git/wireless/wireless-next

Johannes Berg says:

====================
Notable changes this time around:

MAINTAINERS
 - add missing driver git trees

ath11k
 - factory test mode support

iwlwifi
 - config rework to drop test devices and
   split the different families
 - major update for new firmware and MLO

stack
 - initial multi-link reconfiguration suppor
 - multi-BSSID and MLO improvements

other
 - fix the last few W=1 warnings from GCC 13
 - merged wireless tree to avoid conflicts

* tag 'wireless-next-2023-06-22' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (245 commits)
  wifi: ieee80211: fix erroneous NSTR bitmap size checks
  wifi: rtlwifi: cleanup USB interface
  wifi: rtlwifi: simplify LED management
  wifi: ath10k: improve structure padding
  wifi: ath9k: convert msecs to jiffies where needed
  wifi: iwlwifi: mvm: Add support for IGTK in D3 resume flow
  wifi: iwlwifi: mvm: update two most recent GTKs on D3 resume flow
  wifi: iwlwifi: mvm: Refactor security key update after D3
  wifi: mac80211: mark keys as uploaded when added by the driver
  wifi: iwlwifi: remove support of A0 version of FM RF
  wifi: iwlwifi: cfg: clean up Bz module firmware lines
  wifi: iwlwifi: pcie: add device id 51F1 for killer 1675
  wifi: iwlwifi: bump FW API to 83 for AX/BZ/SC devices
  wifi: iwlwifi: cfg: remove trailing dash from FW_PRE constants
  wifi: iwlwifi: also unify Ma device configurations
  wifi: iwlwifi: also unify Sc device configurations
  wifi: iwlwifi: unify Bz/Gl device configurations
  wifi: iwlwifi: pcie: also drop jacket from info macro
  wifi: iwlwifi: remove support for *nJ devices
  wifi: iwlwifi: don't load old firmware for 22000
  ...
====================

Link: https://lore.kernel.org/r/20230622185602.147650-2-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agoMerge tag 'linux-can-next-for-6.5-20230622' of git://git.kernel.org/pub/scm/linux...
Jakub Kicinski [Fri, 23 Jun 2023 03:05:25 +0000 (20:05 -0700)]
Merge tag 'linux-can-next-for-6.5-20230622' of git://git./linux/kernel/git/mkl/linux-can-next

Marc Kleine-Budde says:

====================
pull-request: can-next 2023-06-22

The first patch is by Carsten Schmidt, targets the kvaser_usb driver
and adds len8_dlc support.

Marcel Hellwig's patch for the xilinx_can driver adds support for CAN
transceivers via the PHY framework.

Frank Jungclaus contributes 6+2 patches for the esd_usb driver in
preparation for the upcoming CAN-USB/3 support.

The 2 patches by Miquel Raynal for the sja1000 driver work around
overruns stalls on the Renesas SoCs.

The next 3 patches are by me and fix the coding style in the
rx-offload helper and in the m_can and ti_hecc driver.

Vincent Mailhol contributes 3 patches to fix and update the
calculation of the length of CAN frames on the wire.

Oliver Hartkopp's patch moves the CAN_RAW_FILTER_MAX definition into
the correct header.

The remaining 14 patches are by Jimmy Assarsson, target the
kvaser_pciefd driver and bring various updates and improvements.

* tag 'linux-can-next-for-6.5-20230622' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next: (33 commits)
  can: kvaser_pciefd: Use TX FIFO size read from CAN controller
  can: kvaser_pciefd: Refactor code
  can: kvaser_pciefd: Add len8_dlc support
  can: kvaser_pciefd: Use FIELD_{GET,PREP} and GENMASK where appropriate
  can: kvaser_pciefd: Sort register definitions
  can: kvaser_pciefd: Change return type for kvaser_pciefd_{receive,transmit,set_tx}_irq()
  can: kvaser_pciefd: Rename device ID defines
  can: kvaser_pciefd: Sort includes in alphabetic order
  can: kvaser_pciefd: Remove SPI flash parameter read functionality
  can: uapi: move CAN_RAW_FILTER_MAX definition to raw.h
  can: kvaser_pciefd: Define unsigned constants with type suffix 'U'
  can: kvaser_pciefd: Set hardware timestamp on transmitted packets
  can: kvaser_pciefd: Add function to set skb hwtstamps
  can: kvaser_pciefd: Remove handler for unused KVASER_PCIEFD_PACK_TYPE_EFRAME_ACK
  can: kvaser_pciefd: Remove useless write to interrupt register
  can: length: refactor frame lengths definition to add size in bits
  can: length: fix bitstuffing count
  can: length: fix description of the RRS field
  can: m_can: fix coding style
  can: ti_hecc: fix coding style
  ...
====================

Link: https://lore.kernel.org/r/20230622082658.571150-1-mkl@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: fix net device address assign type
Piotr Gardocki [Wed, 21 Jun 2023 13:21:06 +0000 (15:21 +0200)]
net: fix net device address assign type

Commit ad72c4a06acc introduced optimization to return from function
quickly if the MAC address is not changing at all. It was reported
that such change causes dev->addr_assign_type to not change
to NET_ADDR_SET from _PERM or _RANDOM.
Restore the old behavior and skip only call to ndo_set_mac_address.

Fixes: ad72c4a06acc ("net: add check for current MAC address in dev_set_mac_address")
Reported-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Piotr Gardocki <piotrx.gardocki@intel.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/20230621132106.991342-1-piotrx.gardocki@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agosfc: keep alive neighbour entries while a TC encap action is using them
Edward Cree [Wed, 21 Jun 2023 12:15:04 +0000 (13:15 +0100)]
sfc: keep alive neighbour entries while a TC encap action is using them

When processing counter updates, if any action set using the newly
 incremented counter includes an encap action, prod the corresponding
 neighbouring entry to indicate to the neighbour cache that the entry
 is still in use and passing traffic.

Signed-off-by: Edward Cree <ecree.xilinx@gmail.com>
Link: https://lore.kernel.org/r/20230621121504.17004-1-edward.cree@amd.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: dsa: qca8k: add support for additional modes for netdev trigger
Christian Marangi [Wed, 21 Jun 2023 09:54:09 +0000 (11:54 +0200)]
net: dsa: qca8k: add support for additional modes for netdev trigger

The QCA8K switch supports additional modes that can be handled in
hardware for the LED netdev trigger.

Add these additional modes to further support the Switch LEDs and
offload more blink modes.

Add additional modes:
- link_10
- link_100
- link_1000
- half_duplex
- full_duplex

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://lore.kernel.org/r/20230621095409.25859-1-ansuelsmth@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agodocs: ABI: sysfs-class-led-trigger-netdev: add new modes and entry
Christian Marangi [Wed, 21 Jun 2023 09:26:53 +0000 (11:26 +0200)]
docs: ABI: sysfs-class-led-trigger-netdev: add new modes and entry

Document newly introduced modes and entry for the LED netdev trigger.

Add documentation for new modes:
- link_10
- link_100
- link_1000
- half_duplex
- full_duplex

Add documentation for new entry:
- hw_control

Also add additional info for the interval entry and the tx/rx modes with
the special case of hw_control ON.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20230621092653.23172-1-ansuelsmth@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agoigb: Fix igb_down hung on surprise removal
Ying Hsu [Tue, 20 Jun 2023 17:47:32 +0000 (10:47 -0700)]
igb: Fix igb_down hung on surprise removal

In a setup where a Thunderbolt hub connects to Ethernet and a display
through USB Type-C, users may experience a hung task timeout when they
remove the cable between the PC and the Thunderbolt hub.
This is because the igb_down function is called multiple times when
the Thunderbolt hub is unplugged. For example, the igb_io_error_detected
triggers the first call, and the igb_remove triggers the second call.
The second call to igb_down will block at napi_synchronize.
Here's the call trace:
    __schedule+0x3b0/0xddb
    ? __mod_timer+0x164/0x5d3
    schedule+0x44/0xa8
    schedule_timeout+0xb2/0x2a4
    ? run_local_timers+0x4e/0x4e
    msleep+0x31/0x38
    igb_down+0x12c/0x22a [igb 6615058754948bfde0bf01429257eb59f13030d4]
    __igb_close+0x6f/0x9c [igb 6615058754948bfde0bf01429257eb59f13030d4]
    igb_close+0x23/0x2b [igb 6615058754948bfde0bf01429257eb59f13030d4]
    __dev_close_many+0x95/0xec
    dev_close_many+0x6e/0x103
    unregister_netdevice_many+0x105/0x5b1
    unregister_netdevice_queue+0xc2/0x10d
    unregister_netdev+0x1c/0x23
    igb_remove+0xa7/0x11c [igb 6615058754948bfde0bf01429257eb59f13030d4]
    pci_device_remove+0x3f/0x9c
    device_release_driver_internal+0xfe/0x1b4
    pci_stop_bus_device+0x5b/0x7f
    pci_stop_bus_device+0x30/0x7f
    pci_stop_bus_device+0x30/0x7f
    pci_stop_and_remove_bus_device+0x12/0x19
    pciehp_unconfigure_device+0x76/0xe9
    pciehp_disable_slot+0x6e/0x131
    pciehp_handle_presence_or_link_change+0x7a/0x3f7
    pciehp_ist+0xbe/0x194
    irq_thread_fn+0x22/0x4d
    ? irq_thread+0x1fd/0x1fd
    irq_thread+0x17b/0x1fd
    ? irq_forced_thread_fn+0x5f/0x5f
    kthread+0x142/0x153
    ? __irq_get_irqchip_state+0x46/0x46
    ? kthread_associate_blkcg+0x71/0x71
    ret_from_fork+0x1f/0x30

In this case, igb_io_error_detected detaches the network interface
and requests a PCIE slot reset, however, the PCIE reset callback is
not being invoked and thus the Ethernet connection breaks down.
As the PCIE error in this case is a non-fatal one, requesting a
slot reset can be avoided.
This patch fixes the task hung issue and preserves Ethernet
connection by ignoring non-fatal PCIE errors.

Signed-off-by: Ying Hsu <yinghsu@chromium.org>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230620174732.4145155-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agoMerge branch 'net-dsa-microchip-fix-writes-to-phy-registers-0x10'
Jakub Kicinski [Fri, 23 Jun 2023 02:48:40 +0000 (19:48 -0700)]
Merge branch 'net-dsa-microchip-fix-writes-to-phy-registers-0x10'

Rasmus Villemoes says:

====================
net: dsa: microchip: fix writes to phy registers >= 0x10

Patch 1 is just a simplification, technically unrelated to the other
two patches. But it would be a bit inconsistent to have the new
ksz_prmw32() introduced in patch 2 use ksz_rmw32() while leaving
ksz_prmw8() as-is.

The actual fix is of course patch 3. I can definitely see some weird
behaviour on our ksz9567 when writing to phy registers 0x1e and 0x1f
(with phytool from userspace), though it does not seem that the effect
is always to write zeroes to the buddy register as the errata sheet
says would be the case. In our case, the switch is connected via i2c;
I hope somebody with other switches and/or the SPI variants can test
this.
====================

Link: https://lore.kernel.org/r/20230620113855.733526-1-linux@rasmusvillemoes.dk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: dsa: microchip: fix writes to phy registers >= 0x10
Rasmus Villemoes [Tue, 20 Jun 2023 11:38:54 +0000 (13:38 +0200)]
net: dsa: microchip: fix writes to phy registers >= 0x10

According to the errata sheets for ksz9477 and ksz9567, writes to the
PHY registers 0x10-0x1f (i.e. those located at addresses 0xN120 to
0xN13f) must be done as a 32 bit write to the 4-byte aligned address
containing the register, hence requires a RMW in order not to change
the adjacent PHY register.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20230620113855.733526-4-linux@rasmusvillemoes.dk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: dsa: microchip: add ksz_prmw32() helper
Rasmus Villemoes [Tue, 20 Jun 2023 11:38:53 +0000 (13:38 +0200)]
net: dsa: microchip: add ksz_prmw32() helper

This will be used in a subsequent patch fixing an errata for writes to
certain PHY registers.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Acked-by: Arun Ramadoss <arun.ramadoss@microchip.com>
Link: https://lore.kernel.org/r/20230620113855.733526-3-linux@rasmusvillemoes.dk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: dsa: microchip: simplify ksz_prmw8()
Rasmus Villemoes [Tue, 20 Jun 2023 11:38:52 +0000 (13:38 +0200)]
net: dsa: microchip: simplify ksz_prmw8()

Implement ksz_prmw8() in terms of ksz_rmw8(), just as all the other
ksz_pX are implemented in terms of ksz_X. No functional change.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Acked-by: Arun Ramadoss <arun.ramadoss@microchip.com>
Link: https://lore.kernel.org/r/20230620113855.733526-2-linux@rasmusvillemoes.dk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agotools: ynl: improve the direct-include header guard logic
Jakub Kicinski [Wed, 21 Jun 2023 23:17:19 +0000 (16:17 -0700)]
tools: ynl: improve the direct-include header guard logic

Przemek suggests that I shouldn't accuse GCC of witchcraft,
there is a simpler explanation for why we need manual define.

scripts/headers_install.sh modifies the guard, removing _UAPI.
That's why including a kernel header from the tree and from
/usr leads to duplicate definitions.

This also solves the mystery of why I needed to include
the header conditionally. I had the wrong guards for most
cases but ethtool.

Suggested-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Link: https://lore.kernel.org/r/20230621231719.2728928-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: txgbe: remove unused buffer in txgbe_calc_eeprom_checksum
Zhengchao Shao [Tue, 20 Jun 2023 06:25:19 +0000 (14:25 +0800)]
net: txgbe: remove unused buffer in txgbe_calc_eeprom_checksum

Half a year passed since commit 049fe5365324c ("net: txgbe: Add operations
to interact with firmware") was submitted, the buffer in
txgbe_calc_eeprom_checksum was not used. So remove it and the related
branch codes.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202306200242.FXsHokaJ-lkp@intel.com/
Reviewed-by: Jiawen Wu <jiawenwu@trustnetic.com>
Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230620062519.1575298-1-shaozhengchao@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agoMerge branch 'add-and-use-helper-for-pcs-negotiation-modes'
Jakub Kicinski [Fri, 23 Jun 2023 02:41:13 +0000 (19:41 -0700)]
Merge branch 'add-and-use-helper-for-pcs-negotiation-modes'

Russell King says:

====================
Add and use helper for PCS negotiation modes

Earlier this month, I proposed a helper for deciding whether a PCS
should use inband negotiation modes or not. There was some discussion
around this topic, and I believe there was no disagreement about
providing the helper.

The initial discussion can be found at:

https://lore.kernel.org/r/ZGIkGmyL8yL1q1zp@shell.armlinux.org.uk

Subsequently, I posted a RFC series back in May:

https://lore.kernel.org/r/ZGzhvePzPjJ0v2En@shell.armlinux.org.uk

that added a helper, phylink_pcs_neg_mode() which PCS drivers could use
to parse the state, and updated a bunch of drivers to use it. I got
a couple of bits of feedback to it, including some ACKs.

However, I've decided to take this slightly further and change the
"mode" parameter to both the pcs_config() and pcs_link_up() methods
when a PCS driver opts in to this (by setting "neg_mode" in the
phylink_pcs structure.) If this is not set, we default to the old
behaviour. That said, this series converts all the PCS implementations
I can find currently in net-next.

Doing this has the added benefit that the negotiation mode parameter
is also available to the pcs_link_up() function, which can now know
whether inband negotiation was in fact enabled or not at pcs_config()
time.

It has been posted as RFC at:

https://lore.kernel.org/r/ZIh/CLQ3z89g0Ua0@shell.armlinux.org.uk

and received one reply, thanks Elad, which is a similar amount of
interest to previous postings. Let's post it as non-RFC and see
whether we get more reaction.
====================

Link: https://lore.kernel.org/r/ZIxQIBfO9dH5xFlg@shell.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: macb: update PCS driver to use neg_mode
Russell King (Oracle) [Fri, 16 Jun 2023 12:07:34 +0000 (13:07 +0100)]
net: macb: update PCS driver to use neg_mode

Update macb's embedded PCS drivers to use neg_mode, even though it
makes no use of it or the "mode" argument. This makes the driver
consistent with converted drivers.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1qA8Eo-00EaGX-KJ@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: dsa: mt7530: update PCS driver to use neg_mode
Russell King (Oracle) [Fri, 16 Jun 2023 12:07:29 +0000 (13:07 +0100)]
net: dsa: mt7530: update PCS driver to use neg_mode

Update mt7530's embedded PCS driver to use neg_mode, even though it
makes no use of it or the "mode" argument. This makes the driver
consistent with converted drivers.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1qA8Ej-00EaGR-Fk@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: dsa: b53: update PCS driver to use neg_mode
Russell King (Oracle) [Fri, 16 Jun 2023 12:07:24 +0000 (13:07 +0100)]
net: dsa: b53: update PCS driver to use neg_mode

Update B53's embedded PCS driver to use neg_mode, even though it makes
no use of it or the "mode" argument. This makes the driver consistent
with converted drivers.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Acked-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://lore.kernel.org/r/E1qA8Ee-00EaGL-Az@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: sparx5: update PCS driver to use neg_mode
Russell King (Oracle) [Fri, 16 Jun 2023 12:07:19 +0000 (13:07 +0100)]
net: sparx5: update PCS driver to use neg_mode

Update Sparx5's embedded PCS driver to use neg_mode rather than the
mode argument. As there is no pcs_link_up() method, this only affects
the pcs_config() method.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1qA8EZ-00EaGF-6F@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: qca8k: update PCS driver to use neg_mode
Russell King (Oracle) [Fri, 16 Jun 2023 12:07:14 +0000 (13:07 +0100)]
net: qca8k: update PCS driver to use neg_mode

Update qca8k's embedded PCS driver to use neg_mode rather than the
mode argument. As there is no pcs_link_up() method, this only affects
the pcs_config() method.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1qA8EU-00EaG9-1l@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: prestera: update PCS driver to use neg_mode
Russell King (Oracle) [Fri, 16 Jun 2023 12:07:08 +0000 (13:07 +0100)]
net: prestera: update PCS driver to use neg_mode

Update prestera's embedded PCS driver to use neg_mode rather than the
mode argument. As there is no pcs_link_up() method, this only affects
the pcs_config() method.

Acked-by: Elad Nachman <enachman@marvell.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1qA8EO-00EaG3-TR@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: mvpp2: update PCS driver to use neg_mode
Russell King (Oracle) [Fri, 16 Jun 2023 12:07:03 +0000 (13:07 +0100)]
net: mvpp2: update PCS driver to use neg_mode

Update mvpp2's embedded PCS drivers to use neg_mode rather than the
mode argument, remembering to update the ACPI path as well. As there
are no pcs_link_up() methods, this only affects the two pcs_config()
methods.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1qA8EJ-00EaFx-P6@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: mvneta: update PCS driver to use neg_mode
Russell King (Oracle) [Fri, 16 Jun 2023 12:06:58 +0000 (13:06 +0100)]
net: mvneta: update PCS driver to use neg_mode

Update mvneta's embedded PCS driver to use neg_mode rather than the
mode argument. As there is no pcs_link_up() method, this only affects
the pcs_config() method.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1qA8EE-00EaFr-Kx@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: lan966x: update PCS driver to use neg_mode
Russell King (Oracle) [Fri, 16 Jun 2023 12:06:53 +0000 (13:06 +0100)]
net: lan966x: update PCS driver to use neg_mode

Update lan966x's embedded PCS driver to use neg_mode rather than the
mode argument. As there is no pcs_link_up() method, this only affects
the pcs_config() method.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1qA8E9-00EaFl-GN@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: pcs: lynx: update PCS driver to use neg_mode
Russell King (Oracle) [Fri, 16 Jun 2023 12:06:48 +0000 (13:06 +0100)]
net: pcs: lynx: update PCS driver to use neg_mode

Update the Lynx PCS driver to use neg_mode rather than the mode
argument. This ensures that the link_up() method will always program
the speed and duplex when negotiation is disabled.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1qA8E4-00EaFf-Bf@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: pcs: lynxi: update PCS driver to use neg_mode
Russell King (Oracle) [Fri, 16 Jun 2023 12:06:43 +0000 (13:06 +0100)]
net: pcs: lynxi: update PCS driver to use neg_mode

Update the Lynxi PCS driver to use neg_mode rather than the mode
argument. This ensures that the link_up() method will always program
the speed and duplex when negotiation is disabled.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1qA8Dz-00EaFY-5A@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: pcs: xpcs: update PCS driver to use neg_mode
Russell King (Oracle) [Fri, 16 Jun 2023 12:06:37 +0000 (13:06 +0100)]
net: pcs: xpcs: update PCS driver to use neg_mode

Update xpcs to use neg_mode to configure whether inband negotiation
should be used. We need to update sja1105 as well as that directly
calls into the XPCS driver's config function.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1qA8Dt-00EaFS-W9@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: phylink: pass neg_mode into phylink_mii_c22_pcs_config()
Russell King (Oracle) [Fri, 16 Jun 2023 12:06:32 +0000 (13:06 +0100)]
net: phylink: pass neg_mode into phylink_mii_c22_pcs_config()

Convert fman_dtsec, xilinx_axienet and pcs-lynx to pass the neg_mode
into phylink_mii_c22_pcs_config(). Where appropriate, drivers are
updated to have neg_mode passed into their pcs_config() and
pcs_link_up() functions. For other drivers, we just hoist the call
to phylink_pcs_neg_mode() to their pcs_config() method out of
phylink_mii_c22_pcs_config().

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1qA8Do-00EaFM-Ra@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: phylink: convert phylink_mii_c22_pcs_config() to neg_mode
Russell King (Oracle) [Fri, 16 Jun 2023 12:06:27 +0000 (13:06 +0100)]
net: phylink: convert phylink_mii_c22_pcs_config() to neg_mode

Use phylink_pcs_neg_mode() for phylink_mii_c22_pcs_config(). This
results in no functional change.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1qA8Dj-00EaFG-Mt@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet: phylink: add PCS negotiation mode
Russell King (Oracle) [Fri, 16 Jun 2023 12:06:22 +0000 (13:06 +0100)]
net: phylink: add PCS negotiation mode

PCS have to work out whether they should enable PCS negotiation by
looking at the "mode" and "interface" arguments, and the Autoneg bit
in the advertising mask.

This leads to some complex logic, so lets pull that out into phylink
and instead pass a "neg_mode" argument to the PCS configuration and
link up methods, instead of the "mode" argument.

In order to transition drivers, add a "neg_mode" flag to the phylink
PCS structure to PCS can indicate whether they want to be passed the
neg_mode or the old mode argument.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1qA8De-00EaFA-Ht@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agoMerge branch 'fix-comment-typos-about-transmit'
Jakub Kicinski [Fri, 23 Jun 2023 02:38:46 +0000 (19:38 -0700)]
Merge branch 'fix-comment-typos-about-transmit'

Yueh-Shun Li says:

====================
Fix comment typos about "transmit"

Fix typos about "transmit" missing the first "s"
found by searching with keyword "tram" in the first 7
patches.
====================

Link: https://lore.kernel.org/r/20230622012627.15050-1-shamrocklee@posteo.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agonet/tls: fix comment typo
Yueh-Shun Li [Thu, 22 Jun 2023 01:26:33 +0000 (01:26 +0000)]
net/tls: fix comment typo

Spell "retransmit" properly.

Found by searching for keyword "tranm".

Signed-off-by: Yueh-Shun Li <shamrocklee@posteo.net>
Link: https://lore.kernel.org/r/20230622012627.15050-7-shamrocklee@posteo.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agotcp: fix comment typo
Yueh-Shun Li [Thu, 22 Jun 2023 01:26:31 +0000 (01:26 +0000)]
tcp: fix comment typo

Spell "transmissions" properly.

Found by searching for keyword "tranm".

Signed-off-by: Yueh-Shun Li <shamrocklee@posteo.net>
Link: https://lore.kernel.org/r/20230622012627.15050-6-shamrocklee@posteo.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agoi40e, xsk: fix comment typo
Yueh-Shun Li [Thu, 22 Jun 2023 01:26:25 +0000 (01:26 +0000)]
i40e, xsk: fix comment typo

Spell "transmission" properly.

Found by searching for keyword "tranm".

Signed-off-by: Yueh-Shun Li <shamrocklee@posteo.net>
Link: https://lore.kernel.org/r/20230622012627.15050-3-shamrocklee@posteo.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Jakub Kicinski [Fri, 23 Jun 2023 01:40:38 +0000 (18:40 -0700)]
Merge git://git./linux/kernel/git/netdev/net

Cross-merge networking fixes after downstream PR.

Conflicts:

tools/testing/selftests/net/fcnal-test.sh
  d7a2fc1437f7 ("selftests: net: fcnal-test: check if FIPS mode is enabled")
  dd017c72dde6 ("selftests: fcnal: Test SO_DONTROUTE on TCP sockets.")
https://lore.kernel.org/all/5007b52c-dd16-dbf6-8d64-b9701bfa498b@tessares.net/
https://lore.kernel.org/all/20230619105427.4a0df9b3@canb.auug.org.au/

No adjacent changes.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
16 months agoMerge tag 'net-6.4-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Linus Torvalds [Fri, 23 Jun 2023 00:59:51 +0000 (17:59 -0700)]
Merge tag 'net-6.4-rc8' of git://git./linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
 "Including fixes from ipsec, bpf, mptcp and netfilter.

  Current release - regressions:

   - netfilter: add NFT_TRANS_PREPARE_ERROR to deal with bound set/chain

   - eth: mlx5e:
      - fix scheduling of IPsec ASO query while in atomic
      - free IRQ rmap and notifier on kernel shutdown

  Current release - new code bugs:

   - phy: manual remove LEDs to ensure correct ordering

  Previous releases - regressions:

   - mptcp: fix possible divide by zero in recvmsg()

   - dsa: revert "net: phy: dp83867: perform soft reset and retain
     established link"

  Previous releases - always broken:

   - sched: netem: acquire qdisc lock in netem_change()

   - bpf:
      - fix verifier id tracking of scalars on spill
      - fix NULL dereference on exceptions
      - accept function names that contain dots

   - netfilter: disallow element updates of bound anonymous sets

   - mptcp: ensure listener is unhashed before updating the sk status

   - xfrm:
      - add missed call to delete offloaded policies
      - fix inbound ipv4/udp/esp packets to UDPv6 dualstack sockets

   - selftests: fixes for FIPS mode

   - dsa: mt7530: fix multiple CPU ports, BPDU and LLDP handling

   - eth: sfc: use budget for TX completions

  Misc:

   - wifi: iwlwifi: add support for SO-F device with PCI id 0x7AF0"

* tag 'net-6.4-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (74 commits)
  revert "net: align SO_RCVMARK required privileges with SO_MARK"
  net: wwan: iosm: Convert single instance struct member to flexible array
  sch_netem: acquire qdisc lock in netem_change()
  selftests: forwarding: Fix race condition in mirror installation
  wifi: mac80211: report all unusable beacon frames
  mptcp: ensure listener is unhashed before updating the sk status
  mptcp: drop legacy code around RX EOF
  mptcp: consolidate fallback and non fallback state machine
  mptcp: fix possible list corruption on passive MPJ
  mptcp: fix possible divide by zero in recvmsg()
  mptcp: handle correctly disconnect() failures
  bpf: Force kprobe multi expected_attach_type for kprobe_multi link
  bpf/btf: Accept function names that contain dots
  Revert "net: phy: dp83867: perform soft reset and retain established link"
  net: mdio: fix the wrong parameters
  netfilter: nf_tables: Fix for deleting base chains with payload
  netfilter: nfnetlink_osf: fix module autoload
  netfilter: nf_tables: drop module reference after updating chain
  netfilter: nf_tables: disallow timeout for anonymous sets
  netfilter: nf_tables: disallow updates of anonymous sets
  ...

16 months agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Fri, 23 Jun 2023 00:54:10 +0000 (17:54 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "ARM:

   - Correctly save/restore PMUSERNR_EL0 when host userspace is using
     PMU counters directly

   - Fix GICv2 emulation on GICv3 after the locking rework

   - Don't use smp_processor_id() in kvm_pmu_probe_armpmu(), and
     document why

  Generic:

   - Avoid setting page table entries pointing to a deleted memslot if a
     host page table entry is changed concurrently with the deletion"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: Avoid illegal stage2 mapping on invalid memory slot
  KVM: arm64: Use raw_smp_processor_id() in kvm_pmu_probe_armpmu()
  KVM: arm64: Restore GICv2-on-GICv3 functionality
  KVM: arm64: PMU: Don't overwrite PMUSERENR with vcpu loaded
  KVM: arm64: PMU: Restore the host's PMUSERENR_EL0

16 months agoMerge tag 'powerpc-6.4-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Fri, 23 Jun 2023 00:49:40 +0000 (17:49 -0700)]
Merge tag 'powerpc-6.4-5' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fix from Michael Ellerman:

 - Disable IRQs when switching mm in exit_lazy_flush_tlb() called from
   exit_mmap()

Thanks to Nicholas Piggin and Sachin Sant.

* tag 'powerpc-6.4-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/64s/radix: Fix exit lazy tlb mm switch with irqs enabled

16 months agoMerge tag 'pci-v6.4-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Linus Torvalds [Fri, 23 Jun 2023 00:47:07 +0000 (17:47 -0700)]
Merge tag 'pci-v6.4-fixes-2' of git://git./linux/kernel/git/pci/pci

Pull pci fix from Bjorn Helgaas:

 - Transfer Intel LGM GW PCIe maintenance from Rahul Tanwar to Chuanhua
   Lei (Zhu YiXin)

* tag 'pci-v6.4-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci:
  MAINTAINERS: Add Chuanhua Lei as Intel LGM GW PCIe maintainer

16 months agoMerge tag 'mmc-v6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Linus Torvalds [Fri, 23 Jun 2023 00:42:07 +0000 (17:42 -0700)]
Merge tag 'mmc-v6.4-rc6' of git://git./linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:

 - Fix support for deferred probing for several host drivers

 - litex_mmc: Use async probe as it's common for all mmc hosts

 - meson-gx: Fix bug when scheduling while atomic

 - mmci_stm32: Fix max busy timeout calculation

 - sdhci-msm: Disable broken 64-bit DMA on MSM8916

* tag 'mmc-v6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: usdhi60rol0: fix deferred probing
  mmc: sunxi: fix deferred probing
  mmc: sh_mmcif: fix deferred probing
  mmc: sdhci-spear: fix deferred probing
  mmc: sdhci-acpi: fix deferred probing
  mmc: owl: fix deferred probing
  mmc: omap_hsmmc: fix deferred probing
  mmc: omap: fix deferred probing
  mmc: mvsdio: fix deferred probing
  mmc: mtk-sd: fix deferred probing
  mmc: meson-gx: fix deferred probing
  mmc: bcm2835: fix deferred probing
  mmc: litex_mmc: set PROBE_PREFER_ASYNCHRONOUS
  mmc: meson-gx: remove redundant mmc_request_done() call from irq context
  mmc: mmci: stm32: fix max busy timeout calculation
  mmc: sdhci-msm: Disable broken 64-bit DMA on MSM8916

16 months agoMerge tag 'platform-drivers-x86-v6.4-5' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 23 Jun 2023 00:38:11 +0000 (17:38 -0700)]
Merge tag 'platform-drivers-x86-v6.4-5' of git://git./linux/kernel/git/pdx86/platform-drivers-x86

Pull x86 platform driver fix from Hans de Goede:
 "One small fix for an AMD PMF driver issue which is causing issues for
  users of just released AMD laptop models"

* tag 'platform-drivers-x86-v6.4-5' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
  platform/x86/amd/pmf: Register notify handler only if SPS is enabled

16 months agoMerge tag 'io_uring-6.4-2023-06-21' of git://git.kernel.dk/linux
Linus Torvalds [Fri, 23 Jun 2023 00:32:34 +0000 (17:32 -0700)]
Merge tag 'io_uring-6.4-2023-06-21' of git://git.kernel.dk/linux

Pull io_uring fixes from Jens Axboe:
 "A fix for a race condition with poll removal and linked timeouts, and
  then a few followup fixes/tweaks for the msg_control patch from last
  week.

  Not super important, particularly the sparse fixup, as it was broken
  before that recent commit. But let's get it sorted for real for this
  release, rather than just have it broken a bit differently"

* tag 'io_uring-6.4-2023-06-21' of git://git.kernel.dk/linux:
  io_uring/net: use the correct msghdr union member in io_sendmsg_copy_hdr
  io_uring/net: disable partial retries for recvmsg with cmsg
  io_uring/net: clear msg_controllen on partial sendmsg retry
  io_uring/poll: serialize poll linked timer start with poll removal

16 months agoMerge tag 'cgroup-for-6.4-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 23 Jun 2023 00:27:16 +0000 (17:27 -0700)]
Merge tag 'cgroup-for-6.4-rc7-fixes' of git://git./linux/kernel/git/tj/cgroup

Pull cgroup fixes from Tejun Heo:
 "It's late but here are two bug fixes. Both fix problems which can be
  severe but are very confined in scope. The risk to most use cases
  should be minimal.

   - Fix for an old bug which triggers if a cgroup subsystem is
     remounted to a different hierarchy while someone is reading its
     cgroup.procs/tasks file. The risk is pretty low given how seldom
     cgroup subsystems are moved across hierarchies.

   - We moved cpus_read_lock() outside of cgroup internal locks a while
     ago but forgot to update the legacy_freezer leading to lockdep
     triggers. Fixed"

* tag 'cgroup-for-6.4-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup: Do not corrupt task iteration when rebinding subsystem
  cgroup,freezer: hold cpu_hotplug_lock before freezer_mutex in freezer_css_{online,offline}()

16 months agoMerge tag 'kvmarm-fixes-6.4-4' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmar...
Paolo Bonzini [Thu, 22 Jun 2023 19:28:26 +0000 (15:28 -0400)]
Merge tag 'kvmarm-fixes-6.4-4' of git://git./linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm64 fixes for 6.4, take #4

- Correctly save/restore PMUSERNR_EL0 when host userspace is using
  PMU counters directly

- Fix GICv2 emulation on GICv3 after the locking rework

- Don't use smp_processor_id() in kvm_pmu_probe_armpmu(), and
  document why...

16 months agoKVM: Avoid illegal stage2 mapping on invalid memory slot
Gavin Shan [Thu, 15 Jun 2023 05:42:59 +0000 (15:42 +1000)]
KVM: Avoid illegal stage2 mapping on invalid memory slot

We run into guest hang in edk2 firmware when KSM is kept as running on
the host. The edk2 firmware is waiting for status 0x80 from QEMU's pflash
device (TYPE_PFLASH_CFI01) during the operation of sector erasing or
buffered write. The status is returned by reading the memory region of
the pflash device and the read request should have been forwarded to QEMU
and emulated by it. Unfortunately, the read request is covered by an
illegal stage2 mapping when the guest hang issue occurs. The read request
is completed with QEMU bypassed and wrong status is fetched. The edk2
firmware runs into an infinite loop with the wrong status.

The illegal stage2 mapping is populated due to same page sharing by KSM
at (C) even the associated memory slot has been marked as invalid at (B)
when the memory slot is requested to be deleted. It's notable that the
active and inactive memory slots can't be swapped when we're in the middle
of kvm_mmu_notifier_change_pte() because kvm->mn_active_invalidate_count
is elevated, and kvm_swap_active_memslots() will busy loop until it reaches
to zero again. Besides, the swapping from the active to the inactive memory
slots is also avoided by holding &kvm->srcu in __kvm_handle_hva_range(),
corresponding to synchronize_srcu_expedited() in kvm_swap_active_memslots().

  CPU-A                    CPU-B
  -----                    -----
                           ioctl(kvm_fd, KVM_SET_USER_MEMORY_REGION)
                           kvm_vm_ioctl_set_memory_region
                           kvm_set_memory_region
                           __kvm_set_memory_region
                           kvm_set_memslot(kvm, old, NULL, KVM_MR_DELETE)
                             kvm_invalidate_memslot
                               kvm_copy_memslot
                               kvm_replace_memslot
                               kvm_swap_active_memslots        (A)
                               kvm_arch_flush_shadow_memslot   (B)
  same page sharing by KSM
  kvm_mmu_notifier_invalidate_range_start
        :
  kvm_mmu_notifier_change_pte
    kvm_handle_hva_range
    __kvm_handle_hva_range
    kvm_set_spte_gfn            (C)
        :
  kvm_mmu_notifier_invalidate_range_end

Fix the issue by skipping the invalid memory slot at (C) to avoid the
illegal stage2 mapping so that the read request for the pflash's status
is forwarded to QEMU and emulated by it. In this way, the correct pflash's
status can be returned from QEMU to break the infinite loop in the edk2
firmware.

We tried a git-bisect and the first problematic commit is cd4c71835228 ("
KVM: arm64: Convert to the gfn-based MMU notifier callbacks"). With this,
clean_dcache_guest_page() is called after the memory slots are iterated
in kvm_mmu_notifier_change_pte(). clean_dcache_guest_page() is called
before the iteration on the memory slots before this commit. This change
literally enlarges the racy window between kvm_mmu_notifier_change_pte()
and memory slot removal so that we're able to reproduce the issue in a
practical test case. However, the issue exists since commit d5d8184d35c9
("KVM: ARM: Memory virtualization setup").

Cc: stable@vger.kernel.org # v3.9+
Fixes: d5d8184d35c9 ("KVM: ARM: Memory virtualization setup")
Reported-by: Shuai Hu <hshuai@redhat.com>
Reported-by: Zhenyu Zhang <zhenyzha@redhat.com>
Signed-off-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Shaoqin Huang <shahuang@redhat.com>
Message-Id: <20230615054259.14911-1-gshan@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
16 months agowifi: ieee80211: fix erroneous NSTR bitmap size checks
Johannes Berg [Thu, 22 Jun 2023 17:44:22 +0000 (19:44 +0200)]
wifi: ieee80211: fix erroneous NSTR bitmap size checks

The complete profile bit together with the NSTR link pair
present bit indicate whether or not the NSTR bitmap is,
the NSTR bitmap size just indicates how big it is.

Fixes: 7b6f08771bf6 ("wifi: ieee80211: Support validating ML station profile length")
Fixes: 5c1f97537bfb ("wifi: mac80211: store BSS param change count from assoc response")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
16 months agoMerge tag 'nf-23-06-21' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf
Paolo Abeni [Thu, 22 Jun 2023 12:39:06 +0000 (14:39 +0200)]
Merge tag 'nf-23-06-21' of git://git./linux/kernel/git/netfilter/nf

Pablo Neira Ayuso says:

====================
Netfilter/IPVS fixes for net

This is v3, including a crash fix for patch 01/14.

The following patchset contains Netfilter/IPVS fixes for net:

1) Fix UDP segmentation with IPVS tunneled traffic, from Terin Stock.

2) Fix chain binding transaction logic, add a bound flag to rule
   transactions. Remove incorrect logic in nft_data_hold() and
   nft_data_release().

3) Add a NFT_TRANS_PREPARE_ERROR deactivate state to deal with releasing
   the set/chain as a follow up to 1240eb93f061 ("netfilter: nf_tables:
   incorrect error path handling with NFT_MSG_NEWRULE")

4) Drop map element references from preparation phase instead of
   set destroy path, otherwise bogus EBUSY with transactions such as:

        flush chain ip x y
        delete chain ip x w

   where chain ip x y contains jump/goto from set elements.

5) Pipapo set type does not regard generation mask from the walk
   iteration.

6) Fix reference count underflow in set element reference to
   stateful object.

7) Several patches to tighten the nf_tables API:
   - disallow set element updates of bound anonymous set
   - disallow unbound anonymous set/chain at the end of transaction.
   - disallow updates of anonymous set.
   - disallow timeout configuration for anonymous sets.

8) Fix module reference leak in chain updates.

9) Fix nfnetlink_osf module autoload.

10) Fix deletion of basechain when NFTA_CHAIN_HOOK is specified as
    in iptables-nft.

This Netfilter batch is larger than usual at this stage, I am aware we
are fairly late in the -rc cycle, if you prefer to route them through
net-next, please let me know.

netfilter pull request 23-06-21

* tag 'nf-23-06-21' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
  netfilter: nf_tables: Fix for deleting base chains with payload
  netfilter: nfnetlink_osf: fix module autoload
  netfilter: nf_tables: drop module reference after updating chain
  netfilter: nf_tables: disallow timeout for anonymous sets
  netfilter: nf_tables: disallow updates of anonymous sets
  netfilter: nf_tables: reject unbound chain set before commit phase
  netfilter: nf_tables: reject unbound anonymous set before commit phase
  netfilter: nf_tables: disallow element updates of bound anonymous sets
  netfilter: nf_tables: fix underflow in object reference counter
  netfilter: nft_set_pipapo: .walk does not deal with generations
  netfilter: nf_tables: drop map element references from preparation phase
  netfilter: nf_tables: add NFT_TRANS_PREPARE_ERROR to deal with bound set/chain
  netfilter: nf_tables: fix chain binding transaction logic
  ipvs: align inner_mac_header for encapsulation
====================

Link: https://lore.kernel.org/r/20230621100731.68068-1-pablo@netfilter.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
16 months agorevert "net: align SO_RCVMARK required privileges with SO_MARK"
Maciej Żenczykowski [Sun, 18 Jun 2023 10:31:30 +0000 (03:31 -0700)]
revert "net: align SO_RCVMARK required privileges with SO_MARK"

This reverts commit 1f86123b9749 ("net: align SO_RCVMARK required
privileges with SO_MARK") because the reasoning in the commit message
is not really correct:
  SO_RCVMARK is used for 'reading' incoming skb mark (via cmsg), as such
  it is more equivalent to 'getsockopt(SO_MARK)' which has no priv check
  and retrieves the socket mark, rather than 'setsockopt(SO_MARK) which
  sets the socket mark and does require privs.

  Additionally incoming skb->mark may already be visible if
  sysctl_fwmark_reflect and/or sysctl_tcp_fwmark_accept are enabled.

  Furthermore, it is easier to block the getsockopt via bpf
  (either cgroup setsockopt hook, or via syscall filters)
  then to unblock it if it requires CAP_NET_RAW/ADMIN.

On Android the socket mark is (among other things) used to store
the network identifier a socket is bound to.  Setting it is privileged,
but retrieving it is not.  We'd like unprivileged userspace to be able
to read the network id of incoming packets (where mark is set via
iptables [to be moved to bpf])...

An alternative would be to add another sysctl to control whether
setting SO_RCVMARK is privilged or not.
(or even a MASK of which bits in the mark can be exposed)
But this seems like over-engineering...

Note: This is a non-trivial revert, due to later merged commit e42c7beee71d
("bpf: net: Consider has_current_bpf_ctx() when testing capable() in sk_setsockopt()")
which changed both 'ns_capable' into 'sockopt_ns_capable' calls.

Fixes: 1f86123b9749 ("net: align SO_RCVMARK required privileges with SO_MARK")
Cc: Larysa Zaremba <larysa.zaremba@intel.com>
Cc: Simon Horman <simon.horman@corigine.com>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Eyal Birger <eyal.birger@gmail.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Patrick Rohr <prohr@google.com>
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://lore.kernel.org/r/20230618103130.51628-1-maze@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
16 months agonet: wwan: iosm: Convert single instance struct member to flexible array
Kees Cook [Tue, 20 Jun 2023 19:42:38 +0000 (12:42 -0700)]
net: wwan: iosm: Convert single instance struct member to flexible array

struct mux_adth actually ends with multiple struct mux_adth_dg members.
This is seen both in the comments about the member:

/**
 * struct mux_adth - Structure of the Aggregated Datagram Table Header.
 ...
 * @dg: datagramm table with variable length
 */

and in the preparation for populating it:

                        adth_dg_size = offsetof(struct mux_adth, dg) +
                                        ul_adb->dg_count[i] * sizeof(*dg);
...
                        adth_dg_size -= offsetof(struct mux_adth, dg);
                        memcpy(&adth->dg, ul_adb->dg[i], adth_dg_size);

This was reported as a run-time false positive warning:

memcpy: detected field-spanning write (size 16) of single field "&adth->dg" at drivers/net/wwan/iosm/iosm_ipc_mux_codec.c:852 (size 8)

Adjust the struct mux_adth definition and associated sizeof() math; no binary
output differences are observed in the resulting object file.

Reported-by: Florian Klink <flokli@flokli.de>
Closes: https://lore.kernel.org/lkml/dbfa25f5-64c8-5574-4f5d-0151ba95d232@gmail.com/
Fixes: 1f52d7b62285 ("net: wwan: iosm: Enable M.2 7360 WWAN card support")
Cc: M Chetan Kumar <m.chetan.kumar@intel.com>
Cc: Bagas Sanjaya <bagasdotme@gmail.com>
Cc: Intel Corporation <linuxwwan@intel.com>
Cc: Loic Poulain <loic.poulain@linaro.org>
Cc: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: netdev@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230620194234.never.023-kees@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
16 months agosch_netem: acquire qdisc lock in netem_change()
Eric Dumazet [Tue, 20 Jun 2023 18:44:25 +0000 (18:44 +0000)]
sch_netem: acquire qdisc lock in netem_change()

syzbot managed to trigger a divide error [1] in netem.

It could happen if q->rate changes while netem_enqueue()
is running, since q->rate is read twice.

It turns out netem_change() always lacked proper synchronization.

[1]
divide error: 0000 [#1] SMP KASAN
CPU: 1 PID: 7867 Comm: syz-executor.1 Not tainted 6.1.30-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:div64_u64 include/linux/math64.h:69 [inline]
RIP: 0010:packet_time_ns net/sched/sch_netem.c:357 [inline]
RIP: 0010:netem_enqueue+0x2067/0x36d0 net/sched/sch_netem.c:576
Code: 89 e2 48 69 da 00 ca 9a 3b 42 80 3c 28 00 4c 8b a4 24 88 00 00 00 74 0d 4c 89 e7 e8 c3 4f 3b fd 48 8b 4c 24 18 48 89 d8 31 d2 <49> f7 34 24 49 01 c7 4c 8b 64 24 48 4d 01 f7 4c 89 e3 48 c1 eb 03
RSP: 0018:ffffc9000dccea60 EFLAGS: 00010246
RAX: 000001a442624200 RBX: 000001a442624200 RCX: ffff888108a4f000
RDX: 0000000000000000 RSI: 000000000000070d RDI: 000000000000070d
RBP: ffffc9000dcceb90 R08: ffffffff849c5e26 R09: fffffbfff10e1297
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888108a4f358
R13: dffffc0000000000 R14: 0000001a8cd9a7ec R15: 0000000000000000
FS: 00007fa73fe18700(0000) GS:ffff8881f6b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa73fdf7718 CR3: 000000011d36e000 CR4: 0000000000350ee0
Call Trace:
<TASK>
[<ffffffff84714385>] __dev_xmit_skb net/core/dev.c:3931 [inline]
[<ffffffff84714385>] __dev_queue_xmit+0xcf5/0x3370 net/core/dev.c:4290
[<ffffffff84d22df2>] dev_queue_xmit include/linux/netdevice.h:3030 [inline]
[<ffffffff84d22df2>] neigh_hh_output include/net/neighbour.h:531 [inline]
[<ffffffff84d22df2>] neigh_output include/net/neighbour.h:545 [inline]
[<ffffffff84d22df2>] ip_finish_output2+0xb92/0x10d0 net/ipv4/ip_output.c:235
[<ffffffff84d21e63>] __ip_finish_output+0xc3/0x2b0
[<ffffffff84d10a81>] ip_finish_output+0x31/0x2a0 net/ipv4/ip_output.c:323
[<ffffffff84d10f14>] NF_HOOK_COND include/linux/netfilter.h:298 [inline]
[<ffffffff84d10f14>] ip_output+0x224/0x2a0 net/ipv4/ip_output.c:437
[<ffffffff84d123b5>] dst_output include/net/dst.h:444 [inline]
[<ffffffff84d123b5>] ip_local_out net/ipv4/ip_output.c:127 [inline]
[<ffffffff84d123b5>] __ip_queue_xmit+0x1425/0x2000 net/ipv4/ip_output.c:542
[<ffffffff84d12fdc>] ip_queue_xmit+0x4c/0x70 net/ipv4/ip_output.c:556

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230620184425.1179809-1-edumazet@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
16 months agoplatform/x86/amd/pmf: Register notify handler only if SPS is enabled
Shyam Sundar S K [Thu, 22 Jun 2023 06:03:09 +0000 (11:33 +0530)]
platform/x86/amd/pmf: Register notify handler only if SPS is enabled

Power source notify handler is getting registered even when none of the
PMF feature in enabled leading to a crash.

...
[   22.592162] Call Trace:
[   22.592164]  <TASK>
[   22.592164]  ? rcu_note_context_switch+0x5e0/0x660
[   22.592166]  ? __warn+0x81/0x130
[   22.592171]  ? rcu_note_context_switch+0x5e0/0x660
[   22.592172]  ? report_bug+0x171/0x1a0
[   22.592175]  ? prb_read_valid+0x1b/0x30
[   22.592177]  ? handle_bug+0x3c/0x80
[   22.592178]  ? exc_invalid_op+0x17/0x70
[   22.592179]  ? asm_exc_invalid_op+0x1a/0x20
[   22.592182]  ? rcu_note_context_switch+0x5e0/0x660
[   22.592183]  ? acpi_ut_delete_object_desc+0x86/0xb0
[   22.592186]  ? acpi_ut_update_ref_count.part.0+0x22d/0x930
[   22.592187]  __schedule+0xc0/0x1410
[   22.592189]  ? ktime_get+0x3c/0xa0
[   22.592191]  ? lapic_next_event+0x1d/0x30
[   22.592193]  ? hrtimer_start_range_ns+0x25b/0x350
[   22.592196]  schedule+0x5e/0xd0
[   22.592197]  schedule_hrtimeout_range_clock+0xbe/0x140
[   22.592199]  ? __pfx_hrtimer_wakeup+0x10/0x10
[   22.592200]  usleep_range_state+0x64/0x90
[   22.592203]  amd_pmf_send_cmd+0x106/0x2a0 [amd_pmf bddfe0fe3712aaa99acce3d5487405c5213c6616]
[   22.592207]  amd_pmf_update_slider+0x56/0x1b0 [amd_pmf bddfe0fe3712aaa99acce3d5487405c5213c6616]
[   22.592210]  amd_pmf_set_sps_power_limits+0x72/0x80 [amd_pmf bddfe0fe3712aaa99acce3d5487405c5213c6616]
[   22.592213]  amd_pmf_pwr_src_notify_call+0x49/0x90 [amd_pmf bddfe0fe3712aaa99acce3d5487405c5213c6616]
[   22.592216]  notifier_call_chain+0x5a/0xd0
[   22.592218]  atomic_notifier_call_chain+0x32/0x50
...

Fix this by moving the registration of source change notify handler only
when SPS(Static Slider) is advertised as supported.

Reported-by: Allen Zhong <allen@atr.me>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217571
Fixes: 4c71ae414474 ("platform/x86/amd/pmf: Add support SPS PMF feature")
Tested-by: Patil Rajesh Reddy <Patil.Reddy@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20230622060309.310001-1-Shyam-sundar.S-k@amd.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
16 months agoselftests: forwarding: Fix race condition in mirror installation
Danielle Ratson [Tue, 20 Jun 2023 12:45:15 +0000 (14:45 +0200)]
selftests: forwarding: Fix race condition in mirror installation

When mirroring to a gretap in hardware the device expects to be
programmed with the egress port and all the encapsulating headers. This
requires the driver to resolve the path the packet will take in the
software data path and program the device accordingly.

If the path cannot be resolved (in this case because of an unresolved
neighbor), then mirror installation fails until the path is resolved.
This results in a race that causes the test to sometimes fail.

Fix this by setting the neighbor's state to permanent in a couple of
tests, so that it is always valid.

Fixes: 35c31d5c323f ("selftests: forwarding: Test mirror-to-gretap w/ UL 802.1d")
Fixes: 239e754af854 ("selftests: forwarding: Test mirror-to-gretap w/ UL 802.1q")
Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Link: https://lore.kernel.org/r/268816ac729cb6028c7a34d4dda6f4ec7af55333.1687264607.git.petrm@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
16 months agoMerge patch series "can: kvaser_pciefd: Fixes and improvements"
Marc Kleine-Budde [Thu, 22 Jun 2023 07:53:03 +0000 (09:53 +0200)]
Merge patch series "can: kvaser_pciefd: Fixes and improvements"

Jimmy Assarsson <extja@kvaser.com> says:

This patch series contains various non critical fixes and improvements for
the kvaser_pciefd driver.

Link: https://lore.kernel.org/all/20230529134248.752036-1-extja@kvaser.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: kvaser_pciefd: Use TX FIFO size read from CAN controller
Jimmy Assarsson [Mon, 29 May 2023 13:42:48 +0000 (15:42 +0200)]
can: kvaser_pciefd: Use TX FIFO size read from CAN controller

Use the TX FIFO size read from CAN controller register, instead of using
hard coded value.

Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/20230529134248.752036-15-extja@kvaser.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: kvaser_pciefd: Refactor code
Jimmy Assarsson [Mon, 29 May 2023 13:42:47 +0000 (15:42 +0200)]
can: kvaser_pciefd: Refactor code

Refactor code;
 - Format code
 - Rename variables and macros
 - Remove intermediate variables
 - Add/remove blank lines
 - Reduce scope of variables
 - Add helper functions

Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/20230529134248.752036-14-extja@kvaser.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: kvaser_pciefd: Add len8_dlc support
Jimmy Assarsson [Mon, 29 May 2023 13:42:46 +0000 (15:42 +0200)]
can: kvaser_pciefd: Add len8_dlc support

Add support for the Classical CAN raw DLC functionality to send and receive
DLC values from 9 .. 15.

Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/20230529134248.752036-13-extja@kvaser.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: kvaser_pciefd: Use FIELD_{GET,PREP} and GENMASK where appropriate
Jimmy Assarsson [Mon, 29 May 2023 13:42:45 +0000 (15:42 +0200)]
can: kvaser_pciefd: Use FIELD_{GET,PREP} and GENMASK where appropriate

Replace opencoded masking and shifting, with GENMASK, FIELD_GET and
FIELD_PREP macros.

Suggested-by: Vincent MAILHOL <mailhol.vincent@wanadoo.fr>
Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/20230529134248.752036-12-extja@kvaser.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: kvaser_pciefd: Sort register definitions
Jimmy Assarsson [Mon, 29 May 2023 13:42:44 +0000 (15:42 +0200)]
can: kvaser_pciefd: Sort register definitions

Sort the registers defines, in the same order as the register bits/fields
are defined.
Sort register bits/fields in MSB-to-LSB order.
Update and add comments.

Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/20230529134248.752036-11-extja@kvaser.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: kvaser_pciefd: Change return type for kvaser_pciefd_{receive,transmit,set_tx...
Jimmy Assarsson [Mon, 29 May 2023 13:42:43 +0000 (15:42 +0200)]
can: kvaser_pciefd: Change return type for kvaser_pciefd_{receive,transmit,set_tx}_irq()

Change return type to void for kvaser_pciefd_transmit_irq(),
kvaser_pciefd_receive_irq() and kvaser_pciefd_set_tx_irq().
These functions always return zero.

Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/20230529134248.752036-10-extja@kvaser.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: kvaser_pciefd: Rename device ID defines
Jimmy Assarsson [Mon, 29 May 2023 13:42:42 +0000 (15:42 +0200)]
can: kvaser_pciefd: Rename device ID defines

Rename device ID defines to better match the product name of the supported
device.
Use 16 bit hexadecimal values for device IDs.
And format kvaser_pciefd_id_table using clang-format.

Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/20230529134248.752036-9-extja@kvaser.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: kvaser_pciefd: Sort includes in alphabetic order
Jimmy Assarsson [Mon, 29 May 2023 13:42:41 +0000 (15:42 +0200)]
can: kvaser_pciefd: Sort includes in alphabetic order

Sort the includes in alphabetic order.

Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/20230529134248.752036-8-extja@kvaser.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: kvaser_pciefd: Remove SPI flash parameter read functionality
Jimmy Assarsson [Mon, 29 May 2023 13:42:40 +0000 (15:42 +0200)]
can: kvaser_pciefd: Remove SPI flash parameter read functionality

Remove SPI flash parameter read functionality, since it's only used for
reading the interface CAN controller count.
This information is already read from a register, making the information
redundant.

Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/20230529134248.752036-7-extja@kvaser.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: uapi: move CAN_RAW_FILTER_MAX definition to raw.h
Oliver Hartkopp [Fri, 9 Jun 2023 12:10:51 +0000 (14:10 +0200)]
can: uapi: move CAN_RAW_FILTER_MAX definition to raw.h

CAN_RAW_FILTER_MAX is only relevant for CAN_RAW sockets and used in
linux/can/raw.c or in userspace applications that include the raw.h
file anyway.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://lore.kernel.org/all/20230609121051.9631-1-socketcan@hartkopp.net
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: kvaser_pciefd: Define unsigned constants with type suffix 'U'
Jimmy Assarsson [Mon, 29 May 2023 13:42:39 +0000 (15:42 +0200)]
can: kvaser_pciefd: Define unsigned constants with type suffix 'U'

Define unsigned constants with type suffix 'U'

Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/20230529134248.752036-6-extja@kvaser.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: kvaser_pciefd: Set hardware timestamp on transmitted packets
Jimmy Assarsson [Mon, 29 May 2023 13:42:38 +0000 (15:42 +0200)]
can: kvaser_pciefd: Set hardware timestamp on transmitted packets

Set hardware timestamp on transmitted packets.

Fixes: 26ad340e582d ("can: kvaser_pciefd: Add driver for Kvaser PCIEcan devices")
Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/20230529134248.752036-5-extja@kvaser.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: kvaser_pciefd: Add function to set skb hwtstamps
Jimmy Assarsson [Mon, 29 May 2023 13:42:37 +0000 (15:42 +0200)]
can: kvaser_pciefd: Add function to set skb hwtstamps

Add new function, kvaser_pciefd_set_skb_timestamp(), to set skb hwtstamps.

Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/20230529134248.752036-4-extja@kvaser.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: kvaser_pciefd: Remove handler for unused KVASER_PCIEFD_PACK_TYPE_EFRAME_ACK
Jimmy Assarsson [Mon, 29 May 2023 13:42:36 +0000 (15:42 +0200)]
can: kvaser_pciefd: Remove handler for unused KVASER_PCIEFD_PACK_TYPE_EFRAME_ACK

The Kvaser KCAN controller got a feature to send error frames on request.
The packet KVASER_PCIEFD_PACK_TYPE_EFRAME_ACK signals that the requested
error frame was transmitted.
Since this feature is not supported by the driver, drop the handler and add
KVASER_PCIEFD_PACK_TYPE_EFRAME_ACK to the list of unexpected packet types.

Fixes: 26ad340e582d ("can: kvaser_pciefd: Add driver for Kvaser PCIEcan devices")
Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/20230529134248.752036-3-extja@kvaser.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: kvaser_pciefd: Remove useless write to interrupt register
Jimmy Assarsson [Mon, 29 May 2023 13:42:35 +0000 (15:42 +0200)]
can: kvaser_pciefd: Remove useless write to interrupt register

The PCI interrupt register, KVASER_PCIEFD_IRQ_REG, is level triggered.
Writing to the register doesn't affect it.

Fixes: 26ad340e582d ("can: kvaser_pciefd: Add driver for Kvaser PCIEcan devices")
Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/20230529134248.752036-2-extja@kvaser.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agoMerge patch series "can: length: fix definitions and add bit length calculation"
Marc Kleine-Budde [Thu, 22 Jun 2023 07:44:22 +0000 (09:44 +0200)]
Merge patch series "can: length: fix definitions and add bit length calculation"

Vincent Mailhol <mailhol.vincent@wanadoo.fr> says:

When created in [1], frames length definitions were added to implement
byte queue limits (bql). Because bql expects lengths in bytes, bit
length definitions were not considered back then.

Recently, a need to refer to the exact frame length in bits, with CAN
bit stuffing, appeared in [2].

This series introduces can_frame_bits(): a function-like macro that
can calculate the exact size of a CAN(-FD) frame in bits with or
without bitsuffing.

[1] commit 85d99c3e2a13 ("can: length: can_skb_get_frame_len(): introduce
    function to get data length of frame in data link layer")
Link: https://git.kernel.org/torvalds/c/85d99c3e2a13
[2] RE: [PATCH] can: mcp251xfd: Increase poll timeout
Link: https://lore.kernel.org/linux-can/BL3PR11MB64846C83ACD04E9330B0FE66FB729@BL3PR11MB6484.namprd11.prod.outlook.com
* Changelog *

v4 -> v5:

  * In __can_cc_frame_bits() and __can_fd_frame_bits(), enclose
    data_len in brackets to prevent operator precedence issues.

  * Add a note in can_frame_bits() documentation to explain that
    data_len shall have no side effects.

  * While at it, make CAN(FD)_FRAME_LEN_MAX definition fit on a single
    line.

  * A few typo/grammar small fixes in the commit descriptions.

Link: https://lore.kernel.org/linux-can/20230601165625.100040-1-mailhol.vincent@wanadoo.fr
v3 -> v4:

  * No functional changes.

  * as reported by Simon Horman, fix typo in the documentation of
    can_bitstuffing_len(): "bitstream_len" -> "destuffed_len".

  * as reported by Thomas Kopp, fix several other typos:
      - "indicatior" -> "indicator"
      - "in on the wire" -> "on the wire"
      - "bitsuffing" -> "bitstuffing".

  * in CAN_FRAME_LEN_MAX comment: specify that only the dynamic
    bitstuffing gets ignored but that the intermission is included.

  * move the Suggested-by: Thomas Kopp tag from patch 2 to patch 3.

  * add Reviewed-by: Thomas Kopp tag on the full series.

  * add an additional line of comment for the @intermission argument
    of can_frame_bits().

Link: https://lore.kernel.org/linux-can/20230530144637.4746-1-mailhol.vincent@wanadoo.fr
v2 -> v3:

  * turn can_frame_bits() and can_frame_bytes() into function-like
    macros. The fact that inline functions can not be used to
    initialize constant struct fields was bothering me. I did my best
    to make the macro look as less ugly as possible.

  * as reported by Simon Horman, add missing document for the is_fd
    argument of can_frame_bits().

Link: https://lore.kernel.org/linux-can/20230523065218.51227-1-mailhol.vincent@wanadoo.fr
v1 -> v2:

  * as suggested by Thomas Kopp, add a new patch to the series to fix
    the stuff bit count and the fixed stuff bits definitions

  * and another patch to fix documentation of the Remote Request
    Substitution (RRS).

  * refactor the length definition. Instead of using individual macro,
    rely on an inline function. One reason is to minimize the number
    of definitions. Another reason is that because the dynamic bit
    stuff is calculated differently for CAN and CAN-FD, it is just not
    possible to multiply the existing CANFD_FRAME_OVERHEAD_SFF/EFF by
    the overhead ratio to get the bitsuffing: for CAN-FD, the CRC
    field is already stuffed by the fixed stuff bits and is out of
    scope of the dynamic bitstuffing.

Link: https://lore.kernel.org/linux-can/20230507155506.3179711-1-mailhol.vincent@wanadoo.fr
Link: https://lore.kernel.org/all/20230611025728.450837-1-mailhol.vincent@wanadoo.fr
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: length: refactor frame lengths definition to add size in bits
Vincent Mailhol [Sun, 11 Jun 2023 02:57:28 +0000 (11:57 +0900)]
can: length: refactor frame lengths definition to add size in bits

Introduce a method to calculate the exact size in bits of a CAN(-FD)
frame with or without dynamic bitstuffing.

These are all the possible combinations taken into account:

  - Classical CAN or CAN-FD
  - Standard or Extended frame format
  - CAN-FD CRC17 or CRC21
  - Include or not intermission

Instead of doing several individual macro definitions, declare the
can_frame_bits() function-like macro. To this extent, do a full
refactoring of the length definitions.

In addition add the can_frame_bytes(). This function-like macro
replaces the existing macro:

  - CAN_FRAME_OVERHEAD_SFF: can_frame_bytes(false, false, 0)
  - CAN_FRAME_OVERHEAD_EFF: can_frame_bytes(false, true, 0)
  - CANFD_FRAME_OVERHEAD_SFF: can_frame_bytes(true, false, 0)
  - CANFD_FRAME_OVERHEAD_EFF: can_frame_bytes(true, true, 0)

Function-like macros were chosen over inline functions because they
can be used to initialize const struct fields.

The different maximum frame lengths (maximum data length, including
intermission) are as follow:

   Frame type bits bytes
  -------------------------------------------------------
   Classic CAN SFF no bitstuffing 111 14
   Classic CAN EFF no bitstuffing 131 17
   Classic CAN SFF bitstuffing 135 17
   Classic CAN EFF bitstuffing 160 20
   CAN-FD SFF no bitstuffing 579 73
   CAN-FD EFF no bitstuffing 598 75
   CAN-FD SFF bitstuffing 712 89
   CAN-FD EFF bitstuffing 736 92

The macro CAN_FRAME_LEN_MAX and CANFD_FRAME_LEN_MAX are kept as an
alias to, respectively, can_frame_bytes(false, true, CAN_MAX_DLEN) and
can_frame_bytes(true, true, CANFD_MAX_DLEN).

In addition to the above:

 - Use ISO 11898-1:2015 definitions for the names of the CAN frame
   fields.
 - Include linux/bits.h for use of BITS_PER_BYTE.
 - Include linux/math.h for use of mult_frac() and
   DIV_ROUND_UP(). N.B: the use of DIV_ROUND_UP() is not new to this
   patch, but the include was previously omitted.
 - Add copyright 2023 for myself.

Suggested-by: Thomas Kopp <Thomas.Kopp@microchip.com>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Reviewed-by: Thomas Kopp <Thomas.Kopp@microchip.com>
Link: https://lore.kernel.org/all/20230611025728.450837-4-mailhol.vincent@wanadoo.fr
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: length: fix bitstuffing count
Vincent Mailhol [Sun, 11 Jun 2023 02:57:26 +0000 (11:57 +0900)]
can: length: fix bitstuffing count

The Stuff Bit Count is always coded on 4 bits [1]. Update the Stuff
Bit Count size accordingly.

In addition, the CRC fields of CAN FD Frames contain stuff bits at
fixed positions called fixed stuff bits [2]. The CRC field starts with
a fixed stuff bit and then has another fixed stuff bit after each
fourth bit [2], which allows us to derive this formula:

  FSB count = 1 + round_down(len(CRC field)/4)

The length of the CRC field is [1]:

  len(CRC field) = len(Stuff Bit Count) + len(CRC)
                 = 4 + len(CRC)

with len(CRC) either 17 or 21 bits depending of the payload length.

In conclusion, for CRC17:

  FSB count = 1 + round_down((4 + 17)/4)
            = 6

and for CRC 21:

  FSB count = 1 + round_down((4 + 21)/4)
            = 7

Add a Fixed Stuff bits (FSB) field with above values and update
CANFD_FRAME_OVERHEAD_SFF and CANFD_FRAME_OVERHEAD_EFF accordingly.

[1] ISO 11898-1:2015 section 10.4.2.6 "CRC field":

  The CRC field shall contain the CRC sequence followed by a recessive
  CRC delimiter. For FD Frames, the CRC field shall also contain the
  stuff count.

  Stuff count

  If FD Frames, the stuff count shall be at the beginning of the CRC
  field. It shall consist of the stuff bit count modulo 8 in a 3-bit
  gray code followed by a parity bit [...]

[2] ISO 11898-1:2015 paragraph 10.5 "Frame coding":

  In the CRC field of FD Frames, the stuff bits shall be inserted at
  fixed positions; they are called fixed stuff bits. There shall be a
  fixed stuff bit before the first bit of the stuff count, even if the
  last bits of the preceding field are a sequence of five consecutive
  bits of identical value, there shall be only the fixed stuff bit,
  there shall not be two consecutive stuff bits. A further fixed stuff
  bit shall be inserted after each fourth bit of the CRC field [...]

Fixes: 85d99c3e2a13 ("can: length: can_skb_get_frame_len(): introduce function to get data length of frame in data link layer")
Suggested-by: Thomas Kopp <Thomas.Kopp@microchip.com>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Reviewed-by: Thomas Kopp <Thomas.Kopp@microchip.com>
Link: https://lore.kernel.org/all/20230611025728.450837-2-mailhol.vincent@wanadoo.fr
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: length: fix description of the RRS field
Vincent Mailhol [Sun, 11 Jun 2023 02:57:27 +0000 (11:57 +0900)]
can: length: fix description of the RRS field

The CAN-FD frames only have one reserved bit. The bit corresponding to
Classical CAN frame's RTR bit is called the "Remote Request
Substitution (RRS)" [1].

N.B. The RRS is not to be confused with the Substitute Remote Request
(SRR).

Fix the description in the CANFD_FRAME_OVERHEAD_SFF/EFF macros.

The total remains unchanged, so this is just a documentation fix.

In addition to the above add myself as copyright owner for 2020 (as
coauthor of the initial version, c.f. Fixes tag).

[1] ISO 11898-1:2015 paragraph 10.4.2.3 "Arbitration field":

  RSS bit [only in FD Frames]

    The RRS bit shall be transmitted in FD Frames at the position of
    the RTR bit in Classical Frames. The RRS bit shall be transmitted
    dominant, but receivers shall accept recessive and dominant RRS
    bits.

Fixes: 85d99c3e2a13 ("can: length: can_skb_get_frame_len(): introduce function to get data length of frame in data link layer")
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Reviewed-by: Thomas Kopp <Thomas.Kopp@microchip.com>
Link: https://lore.kernel.org/all/20230611025728.450837-3-mailhol.vincent@wanadoo.fr
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agoMerge patch series "can: fix coding style"
Marc Kleine-Budde [Thu, 22 Jun 2023 07:43:31 +0000 (09:43 +0200)]
Merge patch series "can: fix coding style"

Marc Kleine-Budde <mkl@pengutronix.de> says:

here are 2 coding style fixes for rx-offload and the ti_hecc driver.

Link: https://lore.kernel.org/all/20230620131130.240180-1-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: m_can: fix coding style
Marc Kleine-Budde [Tue, 23 May 2023 06:11:16 +0000 (08:11 +0200)]
can: m_can: fix coding style

This patch aligns code to match open parenthesis and removes a
trailing whitespace.

Fixes: eb38c2053b67 ("can: rx-offload: rename can_rx_offload_queue_sorted() -> can_rx_offload_queue_timestamp()")
Fixes: f5071d9e729d ("can: m_can: m_can_handle_bus_errors(): add support for handling DLEC error on CAN-FD frames")
Reported-by: Judith Mendez <jm@ti.com>
Link: https://lore.kernel.org/all/20230523062410.1984098-1-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: ti_hecc: fix coding style
Marc Kleine-Budde [Tue, 20 Jun 2023 13:11:30 +0000 (15:11 +0200)]
can: ti_hecc: fix coding style

This patch aligns code to match open parenthesis.

Link: https://lore.kernel.org/all/20230620131130.240180-3-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: rx-offload: fix coding style
Marc Kleine-Budde [Tue, 20 Jun 2023 13:11:29 +0000 (15:11 +0200)]
can: rx-offload: fix coding style

This patch aligns code to match open parenthesis.

Link: https://lore.kernel.org/all/20230620131130.240180-2-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agoMerge patch series "can: sja1000: Prepare the use of a threaded handler"
Marc Kleine-Budde [Thu, 22 Jun 2023 07:42:17 +0000 (09:42 +0200)]
Merge patch series "can: sja1000: Prepare the use of a threaded handler"

Miquel Raynal provides a series for the sja1000 driver to work around
overrun stalls with a soft reset on Renesas SoCs.

Link: https://lore.kernel.org/all/20230616134553.2786391-1-miquel.raynal@bootlin.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: sja1000: Prevent overrun stalls with a soft reset on Renesas SoCs
Miquel Raynal [Fri, 16 Jun 2023 13:45:53 +0000 (15:45 +0200)]
can: sja1000: Prevent overrun stalls with a soft reset on Renesas SoCs

In their RZN1 SoC, Renesas put a CAN controller supposed to act very
similarly to the original Philips sja1000. In practice, while flooding
the bus with another device, we discovered that the controller very
often after an overrun situation would just refuse any new frame, drop
them all and trigger over and over again the overrun interrupt, even
though the buffer would have been totally emptied. The controller acts
like if its internal buffer offsets (where it writes and where the host
reads) where totally screwed-up.

Renesas manual mentions a single action to perform in order to
resynchronize the read and write offsets within the buffer: performing
a soft reset.

Performing a soft reset takes a bit of time and involves small delays,
so better do that in a threaded handler rather than inside the hard IRQ
handler.

Add platform data to recognize the platforms which need this workaround,
and when the faulty situation is diagnosed, stop what is being
performed and request the threaded handler to be executed in order to
perform the reset.

Tested-by: Jérémie Dautheribes <jeremie.dautheribes@bootlin.com> # 5.10
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/all/20230616134553.2786391-2-miquel.raynal@bootlin.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: sja1000: Prepare the use of a threaded handler
Miquel Raynal [Fri, 16 Jun 2023 13:45:52 +0000 (15:45 +0200)]
can: sja1000: Prepare the use of a threaded handler

In order to support a flavor of the sja1000 which sometimes freezes, it
will be needed upon certain interrupts to perform a soft reset. The soft
reset operation takes a bit of time, so better not do it within the hard
interrupt handler but rather in a threaded handler. Let's prepare the
possibility for sja1000_err() to request "interrupting" the current flow
and request the threaded handler to be run while keeping the interrupt
line low.

There is no functional change.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/all/20230616134553.2786391-1-miquel.raynal@bootlin.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agoMerge patch series "can: esd_usb: More preparation before supporting esd CAN-USB...
Marc Kleine-Budde [Thu, 22 Jun 2023 07:41:23 +0000 (09:41 +0200)]
Merge patch series "can: esd_usb: More preparation before supporting esd CAN-USB/3 (addendum)"

Frank Jungclaus <frank.jungclaus@esd.eu> says:

While trying to again merge my code changes for CAN-USB/3, I came
across some more places where it could make sense to change them
analogous to the previous clean-up patch series [1].

[1] [PATCH v2 0/6] can: esd_usb: More preparation before supporting esd CAN-USB/3
Link: https://lore.kernel.org/all/20230519195600.420644-1-frank.jungclaus@esd.eu
Link: https://lore.kernel.org/r/20230523173105.3175086-1-frank.jungclaus@esd.eu
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: esd_usb: Use consistent prefix ESD_USB_ for macros
Frank Jungclaus [Tue, 23 May 2023 17:31:05 +0000 (19:31 +0200)]
can: esd_usb: Use consistent prefix ESD_USB_ for macros

Rename the following macros:
- ESD_RTR to ESD_USB_RTR
- ESD_EV_CAN_ERROR_EXT to ESD_USB_EV_CAN_ERROR_EXT

Additionally remove the double newline trailing to definition
of ESD_USB_RTR.

Signed-off-by: Frank Jungclaus <frank.jungclaus@esd.eu>
Link: https://lore.kernel.org/r/20230523173105.3175086-3-frank.jungclaus@esd.eu
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: esd_usb: Make use of kernel macros BIT() and GENMASK()
Frank Jungclaus [Tue, 23 May 2023 17:31:04 +0000 (19:31 +0200)]
can: esd_usb: Make use of kernel macros BIT() and GENMASK()

Make use of kernel macros BIT() and GENMASK().

Signed-off-by: Frank Jungclaus <frank.jungclaus@esd.eu>
Link: https://lore.kernel.org/r/20230523173105.3175086-2-frank.jungclaus@esd.eu
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agoMerge patch series "can: esd_usb: More preparation before supporting esd CAN-USB/3"
Marc Kleine-Budde [Thu, 22 Jun 2023 07:39:36 +0000 (09:39 +0200)]
Merge patch series "can: esd_usb: More preparation before supporting esd CAN-USB/3"

Frank Jungclaus <frank.jungclaus@esd.eu> says:

Apply another small batch of patches as preparation for adding support
of the newly available esd CAN-USB/3 to esd_usb.c.

v1 -> v2:
* Make use of GENMASK() macro for ESD_USB_NO_BAUDRATE and
  ESD_USB_IDMASK
* Also use the BIT() macro for ESD_USB2_3_SAMPLES
* Removed comments with redundant hexadecimal values from
  BIT()-constants
* Reworded (shortened) the commit messages
* Changed the macro ESD_USB_3_SAMPLES to ESD_USB_TRIPLE_SAMPLES

v1:
Link: https://lore.kernel.org/all/20230517192251.2405290-1-frank.jungclaus@esd.eu
Link: https://lore.kernel.org/r/20230519195600.420644-1-frank.jungclaus@esd.eu
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: esd_usb: Don't bother the user with nonessential log message
Frank Jungclaus [Fri, 19 May 2023 19:56:00 +0000 (21:56 +0200)]
can: esd_usb: Don't bother the user with nonessential log message

Replace a netdev_info(), emitting an informational message about the
BTR value to be send to the controller, with a debug message by means
of netdev_dbg().

Link: https://lore.kernel.org/all/20230509-superglue-hazy-38108aa66bfa-mkl@pengutronix.de/
Suggested-by: Marc Kleine-Budde <mkl@pengutronix.de>
Suggested-by: Vincent MAILHOL <mailhol.vincent@wanadoo.fr>
Signed-off-by: Frank Jungclaus <frank.jungclaus@esd.eu>
Link: https://lore.kernel.org/r/20230519195600.420644-7-frank.jungclaus@esd.eu
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: esd_usb: Replace hardcoded message length given to USB commands
Frank Jungclaus [Fri, 19 May 2023 19:55:59 +0000 (21:55 +0200)]
can: esd_usb: Replace hardcoded message length given to USB commands

Replace all hardcoded values supplied to the len element of
esd_usb_msg (and its siblings) by more readable expressions, based on
sizeof(), offsetof(), etc.
Also spend documentation / comments that the len element of esd_usb_msg
is in multiples of 32bit words and not in bytes.

Link: https://lore.kernel.org/all/CAMZ6RqLaDNy-fZ2G0+QMhUEckkXLL+ZyELVSDFmqpd++aBzZQg@mail.gmail.com/
Suggested-by: Vincent MAILHOL <mailhol.vincent@wanadoo.fr>
Signed-off-by: Frank Jungclaus <frank.jungclaus@esd.eu>
Link: https://lore.kernel.org/r/20230519195600.420644-6-frank.jungclaus@esd.eu
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
16 months agocan: esd_usb: Prefix all structures with the device name
Frank Jungclaus [Fri, 19 May 2023 19:55:58 +0000 (21:55 +0200)]
can: esd_usb: Prefix all structures with the device name

Prefix all the structures with the device name.
For commonly used structures make use of (the module name) esd_usb_.
For esd CAN-USB/2 and CAN-USB/Micro specific structures use
esd_usb_2_ and esd_usb_m.

Link: https://lore.kernel.org/all/CAMZ6RqLaDNy-fZ2G0+QMhUEckkXLL+ZyELVSDFmqpd++aBzZQg@mail.gmail.com/
Suggested-by: Vincent MAILHOL <mailhol.vincent@wanadoo.fr>
Signed-off-by: Frank Jungclaus <frank.jungclaus@esd.eu>
Link: https://lore.kernel.org/r/20230519195600.420644-5-frank.jungclaus@esd.eu
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>