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3 years agoMerge tag 'mlx5-updates-2021-04-13' of git://git.kernel.org/pub/scm/linux/kernel...
David S. Miller [Wed, 14 Apr 2021 21:14:03 +0000 (14:14 -0700)]
Merge tag 'mlx5-updates-2021-04-13' of git://git./linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
mlx5-updates-2021-04-13

mlx5 core and netdev driver updates

1) E-Switch updates from Parav,
  1.1) Devlink parameter to control mlx5 metadata enablement for E-Switch
  1.2) Trivial cleanups for E-Switch code
  1.3) Dynamically allocate vport steering namespaces only when required

2) From Jianbo, Use variably sized data structures for Software steering

3) Several minor cleanups
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: enetc: fetch MAC address from device tree
Michael Walle [Wed, 14 Apr 2021 14:48:14 +0000 (16:48 +0200)]
net: enetc: fetch MAC address from device tree

Normally, the bootloader will already initialize the MAC address
registers of the ENETC and the driver will just use them or generate a
random one, if it is not initialized.

Add a new way to provide the MAC address: via device tree. Besides the
usual 'mac-address' property, there is also the possibility to fetch it
via a NVMEM provider. The sl28 board stores the MAC address in the SPI
NOR flash OTP region. Having this will allow linux to fetch the MAC
address from there without being dependent on the bootloader.

No in-tree boards have the device tree properties set, thus for these,
this is a no-op.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agosfc: Remove duplicate argument
Wan Jiabing [Wed, 14 Apr 2021 11:06:45 +0000 (19:06 +0800)]
sfc: Remove duplicate argument

Fix the following coccicheck warning:

./drivers/net/ethernet/sfc/enum.h:80:7-28: duplicated argument to |

Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoskbuff: revert "skbuff: remove some unnecessary operation in skb_segment_list()"
Paolo Abeni [Wed, 14 Apr 2021 10:48:48 +0000 (12:48 +0200)]
skbuff: revert "skbuff: remove some unnecessary operation in skb_segment_list()"

the commit 1ddc3229ad3c ("skbuff: remove some unnecessary operation
in skb_segment_list()") introduces an issue very similar to the
one already fixed by commit 53475c5dd856 ("net: fix use-after-free when
UDP GRO with shared fraglist").

If the GSO skb goes though skb_clone() and pskb_expand_head() before
entering skb_segment_list(), the latter  will unshare the frag_list
skbs and will release the old list. With the reverted commit in place,
when skb_segment_list() completes, skb->next points to the just
released list, and later on the kernel will hit UaF.

Note that since commit e0e3070a9bc9 ("udp: properly complete L4 GRO
over UDP tunnel packet") the critical scenario can be reproduced also
receiving UDP over vxlan traffic with:

NIC (NETIF_F_GRO_FRAGLIST enabled) -> vxlan -> UDP sink

Attaching a packet socket to the NIC will cause skb_clone() and the
tunnel decapsulation will call pskb_expand_head().

Fixes: 1ddc3229ad3c ("skbuff: remove some unnecessary operation in skb_segment_list()")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoatm: idt77252: remove unused function
Jiapeng Chong [Wed, 14 Apr 2021 07:13:39 +0000 (15:13 +0800)]
atm: idt77252: remove unused function

Fix the following clang warning:

drivers/atm/idt77252.c:1787:1: warning: unused function
'idt77252_fbq_level' [-Wunused-function].

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec...
David S. Miller [Wed, 14 Apr 2021 20:15:12 +0000 (13:15 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/klassert/ipsec-next

Steffen Klassert says:

====================
pull request (net-next): ipsec-next 2021-04-14

Not much this time:

1) Simplification of some variable calculations in esp4 and esp6.
   From Jiapeng Chong and Junlin Yang.

2) Fix a clang Wformat warning in esp6 and ah6.
   From Arnd Bergmann.

Please pull or let me know if there are problems.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agor8169: add support for pause ethtool ops
Heiner Kallweit [Wed, 14 Apr 2021 06:23:15 +0000 (08:23 +0200)]
r8169: add support for pause ethtool ops

This adds support for the [g|s]et_pauseparam ethtool ops. It considers
that the chip doesn't support pause frame use in jumbo mode.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch '10GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next...
David S. Miller [Wed, 14 Apr 2021 19:59:41 +0000 (12:59 -0700)]
Merge branch '10GbE' of git://git./linux/kernel/git/tnguy/next-queue

Tony Nguyen says:

====================
10GbE Intel Wired LAN Driver Updates 2021-04-13

This series contains updates to ixgbe and ixgbevf driver.

Jostar Yang adds support for BCM54616s PHY for ixgbe.

Chen Lin removes an unused function pointer for ixgbe and ixgbevf.

Bhaskar Chowdhury fixes a typo in ixgbe.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: stmmac: Add support for external trigger timestamping
Tan Tee Min [Wed, 14 Apr 2021 00:16:17 +0000 (08:16 +0800)]
net: stmmac: Add support for external trigger timestamping

The Synopsis MAC controller supports auxiliary snapshot feature that
allows user to store a snapshot of the system time based on an external
event.

This patch add supports to the above mentioned feature. Users will be
able to triggered capturing the time snapshot from user-space using
application such as testptp or any other applications that uses the
PTP_EXTTS_REQUEST ioctl request.

Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Tan Tee Min <tee.min.tan@intel.com>
Co-developed-by: Wong Vee Khee <vee.khee.wong@linux.intel.com>
Signed-off-by: Wong Vee Khee <vee.khee.wong@linux.intel.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'marvell-88x2222-improvements'
David S. Miller [Wed, 14 Apr 2021 19:56:44 +0000 (12:56 -0700)]
Merge branch 'marvell-88x2222-improvements'

Ivan Bornyakov says:

====================
net: phy: marvell-88x2222: a couple of improvements

First, there are some SFP modules that only uses RX_LOS for link
indication. Add check that link is operational before actual read of
line-side status.

Second, it is invalid to set 10G speed without autonegotiation,
according to phy_ethtool_ksettings_set(). Implement switching between
10GBase-R and 1000Base-X/SGMII if autonegotiation can't complete but
there is signal in line.

Changelog:
  v1 -> v2:
    * make checking that link is operational more friendly for
      trancievers without SFP cages.
    * split swapping 1G/10G modes into non-functional and functional
      commits for the sake of easier review.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: marvell-88x2222: swap 1G/10G modes on autoneg
Ivan Bornyakov [Tue, 13 Apr 2021 20:54:52 +0000 (23:54 +0300)]
net: phy: marvell-88x2222: swap 1G/10G modes on autoneg

Setting 10G without autonegotiation is invalid according to
phy_ethtool_ksettings_set(). Thus, we need to set it during
autonegotiation.

If 1G autonegotiation can't complete for quite a time, but there is
signal in line, switch line interface type to 10GBase-R, if supported,
in hope for link to be established.

And vice versa. If 10GBase-R link can't be established for quite a time,
and autonegotiation is enabled, and there is signal in line, switch line
interface type to appropriate 1G mode, i.e. 1000Base-X or SGMII, if
supported.

Signed-off-by: Ivan Bornyakov <i.bornyakov@metrotek.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: marvell-88x2222: move read_status after config_aneg
Ivan Bornyakov [Tue, 13 Apr 2021 20:54:51 +0000 (23:54 +0300)]
net: phy: marvell-88x2222: move read_status after config_aneg

No functional changes, just move read link status routines below
autonegotiation configuration to make future functional changes more
distinct.

Signed-off-by: Ivan Bornyakov <i.bornyakov@metrotek.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: marvell-88x2222: check that link is operational
Ivan Bornyakov [Tue, 13 Apr 2021 20:54:50 +0000 (23:54 +0300)]
net: phy: marvell-88x2222: check that link is operational

Some SFP modules uses RX_LOS for link indication. In such cases link
will be always up, even without cable connected. RX_LOS changes will
trigger link_up()/link_down() upstream operations. Thus, check that SFP
link is operational before actual read link status.

If there is no SFP cage connected to the tranciever, check only PMD
Recieve Signal Detect register.

Signed-off-by: Ivan Bornyakov <i.bornyakov@metrotek.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/mlx5e: Fix RQ creation flow for queues which doesn't support XDP
Aya Levin [Wed, 7 Apr 2021 11:09:05 +0000 (14:09 +0300)]
net/mlx5e: Fix RQ creation flow for queues which doesn't support XDP

Allow to create an RQ which is not registered as an XDP RQ. For example:
the trap-RQ doesn't register as an XDP RQ.

Fixes: 869c5f926247 ("net/mlx5e: Generalize open RQ")
Signed-off-by: Aya Levin <ayal@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5: Replace spaces with tab at the start of a line
Wenpeng Liang [Thu, 1 Apr 2021 13:07:43 +0000 (21:07 +0800)]
net/mlx5: Replace spaces with tab at the start of a line

There should be no spaces at the start of the line.

Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5: Remove return statement exist at the end of void function
Wenpeng Liang [Thu, 1 Apr 2021 13:07:42 +0000 (21:07 +0800)]
net/mlx5: Remove return statement exist at the end of void function

void function return statements are not generally useful.

Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5: Add a blank line after declarations
Wenpeng Liang [Thu, 1 Apr 2021 13:07:41 +0000 (21:07 +0800)]
net/mlx5: Add a blank line after declarations

There should be a blank lines after declarations.

Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5: Fix bit-wise and with zero
Colin Ian King [Tue, 6 Apr 2021 16:53:46 +0000 (17:53 +0100)]
net/mlx5: Fix bit-wise and with zero

The bit-wise and of the action field with MLX5_ACCEL_ESP_ACTION_DECRYPT
is incorrect as MLX5_ACCEL_ESP_ACTION_DECRYPT is zero and not intended
to be a bit-flag. Fix this by using the == operator as was originally
intended.

Addresses-Coverity: ("Logically dead code")
Fixes: 7dfee4b1d79e ("net/mlx5: IPsec, Refactor SA handle creation and destruction")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5: DR, Alloc cmd buffer with kvzalloc() instead of kzalloc()
Roi Dayan [Mon, 15 Mar 2021 08:22:51 +0000 (10:22 +0200)]
net/mlx5: DR, Alloc cmd buffer with kvzalloc() instead of kzalloc()

The cmd size is 8K so use kvzalloc().

Signed-off-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5: DR, Use variably sized data structures for different actions
Jianbo Liu [Thu, 12 Nov 2020 01:32:52 +0000 (01:32 +0000)]
net/mlx5: DR, Use variably sized data structures for different actions

mlx5dr_action is a generally used data structure, and there is an
union for different types of actions in it. The size of mlx5dr_action
is about 72 bytes, but for those actions with fewer fields, most of
the allocated memory is wasted.
Remove this union, and mlx5dr_action becomes a generic action header.
Then actions are dynamically allocated with needed memory, the data
for each action is stored right after the header.

Signed-off-by: Jianbo Liu <jianbol@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5: SF, Reuse stored hardware function id
Parav Pandit [Fri, 5 Mar 2021 05:38:02 +0000 (07:38 +0200)]
net/mlx5: SF, Reuse stored hardware function id

SF's hardware function id is already stored in mlx5_sf. Reuse it,
instead of querying the hw table.

Signed-off-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5: SF, Use device pointer directly
Parav Pandit [Fri, 5 Mar 2021 08:11:21 +0000 (10:11 +0200)]
net/mlx5: SF, Use device pointer directly

At many places in the code, device pointer is directly available. Make
use of it, instead of accessing it from the table.

Signed-off-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5: E-Switch, Initialize eswitch acls ns when eswitch is enabled
Parav Pandit [Mon, 1 Mar 2021 12:12:13 +0000 (14:12 +0200)]
net/mlx5: E-Switch, Initialize eswitch acls ns when eswitch is enabled

Currently eswitch flow steering (FS) namespace of vport's ingress and
egress ACL are enabled when FS layer is initialized. This is done even
when eswitch is diabled. This demands that total eswitch ports to be
known to FS layer without eswitch in use.

Given the FS core is not dependent on eswitch, make namespace init and
cleanup routines as helper routines to be invoked only when eswitch is
needed.

With this change, ingress and egress ACL namespaces are created only
when eswitch legacy/offloads mode is enabled.

Signed-off-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5: E-Switch, Move legacy code to a individual file
Parav Pandit [Fri, 26 Feb 2021 12:30:50 +0000 (14:30 +0200)]
net/mlx5: E-Switch, Move legacy code to a individual file

Currently eswitch offers two modes. Legacy and offloads.
Offloads code is already in its own file eswitch_offloads.c

However eswitch.c contains the eswitch legacy code and common
infrastructure  code.

To enable future extensions and to better manage generic common eswitch
infrastructure code, move the legacy code to its own legacy.c file.

Signed-off-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5: E-Switch, Convert a macro to a helper routine
Parav Pandit [Fri, 26 Feb 2021 12:36:22 +0000 (14:36 +0200)]
net/mlx5: E-Switch, Convert a macro to a helper routine

Convert ESW_ALLOWED macro to a helper routine so that it can be used in
other eswitch files.

Signed-off-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5: E-Switch Make cleanup sequence mirror of init
Parav Pandit [Tue, 2 Mar 2021 19:39:01 +0000 (21:39 +0200)]
net/mlx5: E-Switch Make cleanup sequence mirror of init

Make cleanup sequence mirror of init sequence for cleaning up reps
and freeing vports.

Also when reps initialization fails, there is no need to perform reps
cleanup.

Signed-off-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5: E-Switch, Make vport number u16
Parav Pandit [Tue, 2 Mar 2021 19:27:47 +0000 (21:27 +0200)]
net/mlx5: E-Switch, Make vport number u16

Vport number is 16-bit field in hardware. Make it u16.

Move location of vport in the structure so that it reduces a hole
in the structure.

Signed-off-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5: E-Switch, Skip querying SF enabled bits
Parav Pandit [Mon, 8 Mar 2021 09:50:40 +0000 (11:50 +0200)]
net/mlx5: E-Switch, Skip querying SF enabled bits

With vhca events, SF state is queried through the VHCA events. Device no
longer expects SF bitmap in the query eswitch functions command.

Hence, remove it to simplify the code.

Signed-off-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
3 years agonet/mlx5: E-Switch, let user to enable disable metadata
Parav Pandit [Fri, 30 Oct 2020 20:44:16 +0000 (22:44 +0200)]
net/mlx5: E-Switch, let user to enable disable metadata

Currently each packet inserted in eswitch is tagged with a internal
metadata to indicate source vport. Metadata tagging is not always
needed. Metadata insertion is needed for multi-port RoCE, failover
between representors and stacked devices. In many other cases,
metadata enablement is not needed.

Metadata insertion slows down the packet processing rate of the E-switch
when it is in switchdev mode.

Below table show performance gain with metadata disabled for VXLAN
offload rules in both SMFS and DMFS steering mode on ConnectX-5 device.

----------------------------------------------
| steering | metadata | pkt size | rx pps    |
| mode     |          |          | (million) |
----------------------------------------------
| smfs     | disabled | 128Bytes | 42        |
----------------------------------------------
| smfs     | enabled  | 128Bytes | 36        |
----------------------------------------------
| dmfs     | disabled | 128Bytes | 42        |
----------------------------------------------
| dmfs     | enabled  | 128Bytes | 36        |
----------------------------------------------

Hence, allow user to disable metadata using driver specific devlink
parameter. Metadata setting of the eswitch is applicable only for the
switchdev mode.

Example to show and disable metadata before changing eswitch mode:
$ devlink dev param show pci/0000:06:00.0 name esw_port_metadata
pci/0000:06:00.0:
  name esw_port_metadata type driver-specific
    values:
      cmode runtime value true

$ devlink dev param set pci/0000:06:00.0 \
  name esw_port_metadata value false cmode runtime

$ devlink dev eswitch set pci/0000:06:00.0 mode switchdev

Signed-off-by: Parav Pandit <parav@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Vu Pham <vuhuong@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
changelog:
v1->v2:
 - added performance numbers in commit log
 - updated commit log and documentation for switchdev mode
 - added explicit note on when user can disable metadata in
   documentation

3 years agonet: ethernet: intel: Fix a typo in the file ixgbe_dcb_nl.c
Bhaskar Chowdhury [Wed, 17 Mar 2021 10:00:01 +0000 (15:30 +0530)]
net: ethernet: intel: Fix a typo in the file ixgbe_dcb_nl.c

s/Reprogam/Reprogram/

Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agonet: intel: Remove unused function pointer typedef ixgbe_mc_addr_itr
Chen Lin [Mon, 15 Feb 2021 12:04:58 +0000 (20:04 +0800)]
net: intel: Remove unused function pointer typedef ixgbe_mc_addr_itr

Remove the 'ixgbe_mc_addr_itr' typedef as it is not used.

Signed-off-by: Chen Lin <chen.lin5@zte.com.cn>
Tested-by: Dave Switzer <david.switzer@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoixgbe: Support external GBE SerDes PHY BCM54616s
Jostar Yang [Thu, 12 Nov 2020 20:33:56 +0000 (21:33 +0100)]
ixgbe: Support external GBE SerDes PHY BCM54616s

The Broadcom PHY is used in switches, so add the ID, and hook it up.

This upstreams the Linux kernel patch from the network operating system
SONiC from February 2020 [1].

[1]: https://github.com/Azure/sonic-linux-kernel/pull/122

Signed-off-by: Jostar Yang <jostar_yang@accton.com>
Signed-off-by: Guohan Lu <lguohan@gmail.com>
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agonet: Space: remove hp100 probe
Arnd Bergmann [Tue, 13 Apr 2021 14:16:17 +0000 (16:16 +0200)]
net: Space: remove hp100 probe

The driver was removed last year, but the static initialization got left
behind by accident.

Fixes: a10079c66290 ("staging: remove hp100 driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'dpaa2-switch-tc-hw-offload'
David S. Miller [Tue, 13 Apr 2021 22:12:19 +0000 (15:12 -0700)]
Merge branch 'dpaa2-switch-tc-hw-offload'

Ioana Ciornei says:

====================
dpaa2-switch: add tc hardware offload on ingress traffic

This patch set adds tc hardware offload on ingress traffic in
dpaa2-switch. The cls flower and matchall classifiers are supported
using the same ACL infrastructure supported by the dpaa2-switch.

The first patch creates a new structure to hold all the necessary
information related to an ACL table. This structure is used in the next
patches to create a link between each switch port and the table used.
Multiple ports can share the same ACL table when they also share the
ingress tc block. Also, some small changes in the priority of the
default STP trap is done in the second patch.

The support for cls flower is added in the 3rd patch, while the 4th
one builds on top of the infrastructure put in place and adds cls
matchall support.

The following flow keys are supported:
 - Ethernet: dst_mac/src_mac
 - IPv4: dst_ip/src_ip/ip_proto/tos
 - VLAN: vlan_id/vlan_prio/vlan_tpid/vlan_dei
 - L4: dst_port/src_port

Each filter can support only one action from the following list:
 - drop
 - mirred egress redirect
 - trap

With the last patch, we reuse the dpaa2_switch_acl_entry_add() function
added previously instead of open-coding the install of a new ACL entry
into the table.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodpaa2-switch: reuse dpaa2_switch_acl_entry_add() for STP frames trap
Ioana Ciornei [Tue, 13 Apr 2021 13:24:48 +0000 (16:24 +0300)]
dpaa2-switch: reuse dpaa2_switch_acl_entry_add() for STP frames trap

Since we added the dpaa2_switch_acl_entry_add() function in the previous
patches to hide all the details of actually adding the ACL entry by
issuing a firmware command, let's use it also for adding a CPU trap for
the STP frames.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodpaa2-switch: add tc matchall filter support
Ioana Ciornei [Tue, 13 Apr 2021 13:24:47 +0000 (16:24 +0300)]
dpaa2-switch: add tc matchall filter support

Add support TC_SETUP_CLSMATCHALL by using the same ACL table entries
framework as for tc flower. Adding a matchall rule is done by installing
an entry which has a mask of all zeroes, thus matching on any packet.

This can be used as a catch-all type of rule if used correctly, ie the
priority of the matchall filter should be kept as the lowest one in the
entire filter block.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodpaa2-switch: add tc flower hardware offload on ingress traffic
Ioana Ciornei [Tue, 13 Apr 2021 13:24:46 +0000 (16:24 +0300)]
dpaa2-switch: add tc flower hardware offload on ingress traffic

This patch adds support for tc flower hardware offload on the ingress
path. Shared filter blocks are supported by sharing a single ACL table
between multiple ports.

The following flow keys are supported:
 - Ethernet: dst_mac/src_mac
 - IPv4: dst_ip/src_ip/ip_proto/tos
 - VLAN: vlan_id/vlan_prio/vlan_tpid/vlan_dei
 - L4: dst_port/src_port

As per flow actions, the following are supported:
 - drop
 - mirred egress redirect
 - trap
Each ACL entry (filter) can be setup with only one of the listed
actions.

A sorted single linked list is used to keep the ACL entries by their
order of priority. When adding a new filter, this enables us to quickly
ascertain if the new entry has the highest priority of the entire block
or if we should make some space in the ACL table by increasing the
priority of the filters already in the table.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodpaa2-switch: install default STP trap rule with the highest priority
Ioana Ciornei [Tue, 13 Apr 2021 13:24:45 +0000 (16:24 +0300)]
dpaa2-switch: install default STP trap rule with the highest priority

Change the default ACL trap rule for STP frames to have the highest
priority.

In the same ACL table will reside both default rules added by the driver
for its internal use as well as rules added with tc flower.  In this
case, the default rules such as the STP one that we already have should
have the highest priority.

Also, remove the check for a full ACL table since we already know that
it's sized so that we don't hit this case.  The last thing changes is
that default trap filters will not be counted in the acl_tbl's num_rules
variable since their number doesn't change.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodpaa2-switch: create a central dpaa2_switch_acl_tbl structure
Ioana Ciornei [Tue, 13 Apr 2021 13:24:44 +0000 (16:24 +0300)]
dpaa2-switch: create a central dpaa2_switch_acl_tbl structure

Introduce a new structure - dpaa2_switch_acl_tbl - to hold all data
related to an ACL table: number of rules added, ACL table id, etc.
This will be used more in the next patches when adding support for
sharing an ACL table between ports.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoionic: return -EFAULT if copy_to_user() fails
Dan Carpenter [Tue, 13 Apr 2021 10:47:59 +0000 (13:47 +0300)]
ionic: return -EFAULT if copy_to_user() fails

The copy_to_user() function returns the number of bytes that it wasn't
able to copy.  We want to return -EFAULT to the user.

Fixes: fee6efce565d ("ionic: add hw timestamp support files")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'stmmac-xdp-zc'
David S. Miller [Tue, 13 Apr 2021 22:06:51 +0000 (15:06 -0700)]
Merge branch 'stmmac-xdp-zc'

Ong Boon Leong says:

====================
stmmac: add XDP ZC support

This is the v2 patch series to add XDP ZC support to stmmac driver.

Summary of v2 patch change:-

6/7: fix synchronize_rcu() is called stmmac_disable_all_queues() that is
     used by ndo_setup_tc().

 ########################################################################

Continuous burst traffics are generated by pktgen script and in the midst
of each packet processing operation by xdpsock the following tc-loop.sh
script is looped continuously:-

 #!/bin/bash
 tc qdisc del dev eth0 parent root
 tc qdisc add dev eth0 ingress
 tc qdisc add dev eth0 root mqprio num_tc 4 map 0 1 2 3 0 0 0 0 0 0 0 0 0 0 0 0 queues 1@0 1@1 1@2 1@3 hw 0
 tc filter add dev eth0 parent ffff: protocol 802.1Q flower vlan_prio 0 hw_tc 0
 tc filter add dev eth0 parent ffff: protocol 802.1Q flower vlan_prio 1 hw_tc 1
 tc filter add dev eth0 parent ffff: protocol 802.1Q flower vlan_prio 2 hw_tc 2
 tc filter add dev eth0 parent ffff: protocol 802.1Q flower vlan_prio 3 hw_tc 3
 tc qdisc list dev eth0
 tc filter show dev eth0 ingress

 On different ssh terminal
 $ while true; do ./tc-loop.sh; sleep 1; done

The v2 patch series have been tested using the xdpsock app:
 $ ./xdpsock -i eth0 -l -z

From xdpsock poller pps report and dmesg, we don't find any warning
related to rcu and the only difference when the script is executed is
the pps rate drops momentarily.

 sock0@eth0:0 l2fwd xdp-drv
                   pps            pkts           1.00
rx                 436347         191361334
tx                 436411         191361334

 sock0@eth0:0 l2fwd xdp-drv
                   pps            pkts           1.00
rx                 254117         191615476
tx                 254053         191615412

 sock0@eth0:0 l2fwd xdp-drv
                   pps            pkts           1.00
rx                 466395         192081924
tx                 466395         192081860

 sock0@eth0:0 l2fwd xdp-drv
                   pps            pkts           1.00
rx                 287410         192369365
tx                 287474         192369365

 sock0@eth0:0 l2fwd xdp-drv
                   pps            pkts           1.00
rx                 395853         192765329
tx                 395789         192765265

 sock0@eth0:0 l2fwd xdp-drv
                   pps            pkts           1.00
rx                 466132         193231514
tx                 466132         193231450

 ########################################################################

Based on the above result, the fix looks promising. Appreciate that if
community can help to review the patch series and provide me feedback
for improvement.
====================

3 years agonet: stmmac: Add TX via XDP zero-copy socket
Ong Boon Leong [Tue, 13 Apr 2021 09:36:26 +0000 (17:36 +0800)]
net: stmmac: Add TX via XDP zero-copy socket

We add the support of XDP ZC TX submission and cleaning into
stmmac_tx_clean(). The function is made to clean as many TX complete
frames as possible, i.e. limit by priv->dma_tx_size instead of NAPI
budget. For TX ring that is associated with XSK pool, the function
stmmac_xdp_xmit_zc() is introduced to TX frame buffers from XSK pool by
using xsk_tx_peek_desc(). To make stmmac_tx_clean() support the cleaning
of XSK TX frames, STMMAC_TXBUF_T_XSK_TX TX buffer type is introduced.

As stmmac_tx_clean() uses the return value to cue whether NAPI function
should continue to poll, we augment the caller of stmmac_tx_clean() to
pass NAPI budget instead of priv->dma_tx_size through 'budget' input and
made stmmac_tx_clean() to always clean up-to the TX ring size instead.
This allows us to use the return boolean status of stmmac_xdp_xmit_zc()
to decide if XSK TX work is done or not: If true, set 'xmits' to return
'budget - 1' so that NAPI poll may exit. Else, set 'xmits' to return
'budget' to make NAPI poll continue to poll since XSK TX work is not
done. Finally, at the end of stmmac_tx_clean(), the function now take
a maximum value between 'count' and 'xmits' so that status from both
TX cleaning and XSK TX (only for XDP ZC) is considered.

This patch adds a new NAPI poll called stmmac_napi_poll_rxtx() that is
meant to be enabled/disabled for RX and TX ring that are bound to XSK
pool. This NAPI poll function starts with cleaning TX ring, then submits
XSK TX frames to TX ring before proceed to perform RX operations, i.e.
, receiving RX frames and replenishing RX ring with RX free buffers
obtained from XSK pool. Therefore, during XSK RX and TX setup, the driver
enables stmmac_napi_poll_rxtx() for RX and TX operations, then during
XSK RX and TX pool tear-down, the driver reenables the exisiting
independent NAPI poll functions accordingly: stmmac_napi_poll_rx() and
stmmac_napi_poll_tx().

Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: stmmac: Enable RX via AF_XDP zero-copy
Ong Boon Leong [Tue, 13 Apr 2021 09:36:25 +0000 (17:36 +0800)]
net: stmmac: Enable RX via AF_XDP zero-copy

This patch adds the support for receiving packet via AF_XDP zero-copy
mechanism.

XDP ZC uses 1:1 mapping of XDP buffer to receive packet, therefore the
use of split header is not used currently. The 'xdp_buff' is declared as
union together with a struct that contains 'page', 'addr' and
'page_offset' that are associated with primary buffer.

RX buffers are now allocated either via page_pool or xsk pool. For RX
buffers from xsk_pool they are allocated and deallocated using below
functions:

 * stmmac_alloc_rx_buffers_zc(struct stmmac_priv *priv, u32 queue)
 * dma_free_rx_xskbufs(struct stmmac_priv *priv, u32 queue)

With above functions now available, we then extend the following driver
functions to support XDP ZC:
 * stmmac_reinit_rx_buffers()
 * __init_dma_rx_desc_rings()
 * init_dma_rx_desc_rings()
 * __free_dma_rx_desc_resources()

Note: stmmac_alloc_rx_buffers_zc() may return -ENOMEM due to RX XDP
buffer pool is not allocated (e.g. samples/bpf/xdpsock TX-only). But,
it is still ok to let TX XDP ZC to continue, therefore, the -ENOMEM
is silently ignored to let the driver succcessfully transition to XDP
ZC mode for the said RX and TX queue.

As XDP ZC buffer size is different, the DMA buffer size is required
to be reprogrammed accordingly for RX DMA/Queue that is populated with
XDP buffer from XSK pool.

Next, to add or remove per-queue XSK pool, stmmac_xdp_setup_pool()
will call stmmac_xdp_enable_pool() or stmmac_xdp_disable_pool()
that in-turn coordinates the tearing down and setting up RX ring via
RX buffers and descriptors removal and reallocation through
stmmac_disable_rx_queue() and stmmac_enable_rx_queue(). In addition,
stmmac_xsk_wakeup() is added to initiate XDP RX buffer replenishing
by signalling user application to add available XDP frames back to
FILL queue.

For RX processing using XDP zero-copy buffer, stmmac_rx_zc() is
introduced which is implemented with the assumption that RX split
header is disabled. For XDP verdict is XDP_PASS, the XDP buffer is
copied into a sk_buff allocated through stmmac_construct_skb_zc()
and sent to Linux network GRO inside stmmac_dispatch_skb_zc(). Free RX
buffers are then replenished using stmmac_rx_refill_zc()

v2: introduce __stmmac_disable_all_queues() to contain the original code
    that does napi_disable() and then make stmmac_setup_tc_block_cb()
    to use it. Move synchronize_rcu() into stmmac_disable_all_queues()
    that eventually calls __stmmac_disable_all_queues(). Then,
    make both stmmac_release() and stmmac_suspend() to use
    stmmac_disable_all_queues(). Thanks David Miller for spotting the
    synchronize_rcu() issue in v1 patch.

Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: stmmac: Refactor __stmmac_xdp_run_prog for XDP ZC
Ong Boon Leong [Tue, 13 Apr 2021 09:36:24 +0000 (17:36 +0800)]
net: stmmac: Refactor __stmmac_xdp_run_prog for XDP ZC

Prepare stmmac_xdp_run_prog() for AF_XDP zero-copy support which will be
added by upcoming patches by splitting out the XDP verdict processing
into __stmmac_xdp_run_prog() and it callable for XDP ZC path which does
not need to verify bpf_prog is not NULL.

The stmmac_xdp_run_prog() is used for regular XDP Rx path which requires
bpf_prog to be verified.

Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: stmmac: rearrange RX and TX desc init into per-queue basis
Ong Boon Leong [Tue, 13 Apr 2021 09:36:23 +0000 (17:36 +0800)]
net: stmmac: rearrange RX and TX desc init into per-queue basis

Below functions are made to be per-queue in preparation of XDP ZC:

 __init_dma_rx_desc_rings(struct stmmac_priv *priv, u32 queue, gfp_t flags)
 __init_dma_tx_desc_rings(struct stmmac_priv *priv, u32 queue)

The original functions below are stay maintained for all queue usage:

 init_dma_rx_desc_rings(struct net_device *dev, gfp_t flags)
 init_dma_tx_desc_rings(struct net_device *dev)

Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: stmmac: refactor stmmac_init_rx_buffers for stmmac_reinit_rx_buffers
Ong Boon Leong [Tue, 13 Apr 2021 09:36:22 +0000 (17:36 +0800)]
net: stmmac: refactor stmmac_init_rx_buffers for stmmac_reinit_rx_buffers

The per-queue RX buffer allocation in stmmac_reinit_rx_buffers() can be
made to use stmmac_alloc_rx_buffers() by merging the page_pool alloc
checks for "buf->page" and "buf->sec_page" in stmmac_init_rx_buffers().

This is in preparation for XSK pool allocation later.

Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: stmmac: introduce dma_recycle_rx_skbufs for stmmac_reinit_rx_buffers
Ong Boon Leong [Tue, 13 Apr 2021 09:36:21 +0000 (17:36 +0800)]
net: stmmac: introduce dma_recycle_rx_skbufs for stmmac_reinit_rx_buffers

Rearrange RX buffer page_pool recycling logics into dma_recycle_rx_skbufs,
so that we prepare stmmac_reinit_rx_buffers() for XSK pool expansion.

Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: stmmac: rearrange RX buffer allocation and free functions
Ong Boon Leong [Tue, 13 Apr 2021 09:36:20 +0000 (17:36 +0800)]
net: stmmac: rearrange RX buffer allocation and free functions

This patch restructures the per RX queue buffer allocation from page_pool
to stmmac_alloc_rx_buffers().

We also rearrange dma_free_rx_skbufs() so that it can be used in
init_dma_rx_desc_rings() during freeing of RX buffer in the event of
page_pool allocation failure to replace the more efficient method earlier.
The replacement is needed to make the RX buffer alloc and free method
scalable to XDP ZC xsk_pool alloc and free later.

Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'ipa-SM8350-SoC'
David S. Miller [Tue, 13 Apr 2021 22:02:25 +0000 (15:02 -0700)]
Merge branch 'ipa-SM8350-SoC'

Alex Elder says:

====================
net: ipa: add support for the SM8350 SoC

This small series adds IPA driver support for the Qualcomm SM8350
SoC, which implements IPA v4.9.

The first patch updates the DT binding, and depends on a previous
patch that has already been accepted into net-next.

The second just defines the IPA v4.9 configuration data file.

(Device Tree files to support this SoC will be sent separately and
will go through the Qualcomm tree.)
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: ipa: add IPA v4.9 configuration data
Alex Elder [Tue, 13 Apr 2021 16:38:26 +0000 (11:38 -0500)]
net: ipa: add IPA v4.9 configuration data

Add support for the SM8350 SoC, which includes IPA version 4.9.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodt-bindings: net: qcom,ipa: add support for SM8350
Alex Elder [Tue, 13 Apr 2021 16:38:25 +0000 (11:38 -0500)]
dt-bindings: net: qcom,ipa: add support for SM8350

Add support for "qcom,sm8350-ipa", which uses IPA v4.9.

Use "enum" rather than "oneOf/const ..." to specify compatible
strings, as suggested by Rob Herring.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoionic: git_ts_info bit shifters
Shannon Nelson [Tue, 13 Apr 2021 17:22:16 +0000 (10:22 -0700)]
ionic: git_ts_info bit shifters

All the uses of HWTSTAMP_FILTER_* values need to be
bit shifters, not straight values.

v2: fixed subject and added Cc Dan and SoB Allen

Fixes: f8ba81da73fc ("ionic: add ethtool support for PTP")
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: Allen Hubbe <allenbh@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoibmvnic: queue reset work in system_long_wq
Lijun Pan [Tue, 13 Apr 2021 19:33:39 +0000 (14:33 -0500)]
ibmvnic: queue reset work in system_long_wq

The reset process for ibmvnic commonly takes multiple seconds, clearly
making it inappropriate for schedule_work/system_wq. The reason to make
this change is that ibmvnic's use of the default system-wide workqueue
for a relatively long-running work item can negatively affect other
workqueue users. So, queue the relatively slow reset job to the
system_long_wq.

Suggested-by: Nathan Lynch <nathanl@linux.ibm.com>
Signed-off-by: Lijun Pan <lijunp213@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge tag 'linux-can-next-for-5.13-20210413' of git://git.kernel.org/pub/scm/linux...
David S. Miller [Tue, 13 Apr 2021 21:53:11 +0000 (14:53 -0700)]
Merge tag 'linux-can-next-for-5.13-20210413' of git://git./linux/kernel/git/mkl/linux-can-next

Marc Kleine-Budde says:

====================
pull-request: can-next 2021-04-13

this is a pull request of 14 patches for net-next/master.

The first patch is by Yoshihiro Shimoda and updates the DT bindings
for the rcar_can driver.

Vincent Mailhol contributes 3 patches that add support for several
ETAS USB CAN adapters.

The final 10 patches are by me and clean up the peak_usb CAN driver.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agorsi: remove unused including <linux/version.h>
Yang Li [Tue, 13 Apr 2021 09:46:12 +0000 (17:46 +0800)]
rsi: remove unused including <linux/version.h>

Fix the following versioncheck warning:
./drivers/net/wireless/rsi/rsi_91x_ps.c: 19 linux/version.h not needed.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonfc: st-nci: remove unnecessary label
wengjianfeng [Tue, 13 Apr 2021 09:45:30 +0000 (17:45 +0800)]
nfc: st-nci: remove unnecessary label

in st_nci_spi_write function, first assign a value to a variable then
goto exit label. return statement just follow the label and exit label
just used once, so we should directly return and remove exit label.

Signed-off-by: wengjianfeng <wengjianfeng@yulong.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoibmvnic: improve failover sysfs entry
Lijun Pan [Tue, 13 Apr 2021 08:31:44 +0000 (03:31 -0500)]
ibmvnic: improve failover sysfs entry

The current implementation relies on H_IOCTL call to issue a
H_SESSION_ERR_DETECTED command to let the hypervisor to send a failover
signal. However, it may not work if there is no backup device or if
the vnic is already in error state,
e.g., "ibmvnic 30000003 env3: rx buffer returned with rc 6".
Add a last resort, that is to schedule a failover reset via CRQ command.

Signed-off-by: Lijun Pan <lijunp213@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoicmp: ICMPV6: pass RFC 8335 reply messages to ping_rcv
Andreas Roeseler [Mon, 12 Apr 2021 21:23:56 +0000 (16:23 -0500)]
icmp: ICMPV6: pass RFC 8335 reply messages to ping_rcv

The current icmp_rcv function drops all unknown ICMP types, including
ICMP_EXT_ECHOREPLY (type 43). In order to parse Extended Echo Reply messages, we have
to pass these packets to the ping_rcv function, which does not do any
other filtering and passes the packet to the designated socket.

Pass incoming RFC 8335 ICMP Extended Echo Reply packets to the ping_rcv
handler instead of discarding the packet.

Signed-off-by: Andreas Roeseler <andreas.a.roeseler@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'non-platform-devices-of_get_mac_address'
David S. Miller [Tue, 13 Apr 2021 21:35:02 +0000 (14:35 -0700)]
Merge branch 'non-platform-devices-of_get_mac_address'

Michael Walle says:

====================
of: net: support non-platform devices in of_get_mac_address()

of_get_mac_address() is commonly used to fetch the MAC address
from the device tree. It also supports reading it from a NVMEM
provider. But the latter is only possible for platform devices,
because only platform devices are searched for a matching device
node.

Add a second method to fetch the NVMEM cell by a device tree node
instead of a "struct device".

Moreover, the NVMEM subsystem will return dynamically allocated
data which has to be freed after use. Currently, this is handled
by allocating a device resource manged buffer to store the MAC
address. of_get_mac_address() then returns a pointer to this
buffer. Without a device, this trick is not possible anymore.
Thus, change the of_get_mac_address() API to have the caller
supply a buffer.

It was considered to use the network device to attach the buffer
to, but then the order matters and netdev_register() has to be
called before of_get_mac_address(). No driver does it this way.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoof: net: fix of_get_mac_addr_nvmem() for non-platform devices
Michael Walle [Mon, 12 Apr 2021 17:47:18 +0000 (19:47 +0200)]
of: net: fix of_get_mac_addr_nvmem() for non-platform devices

of_get_mac_address() already supports fetching the MAC address by an
nvmem provider. But until now, it was just working for platform devices.
Esp. it was not working for DSA ports and PCI devices. It gets more
common that PCI devices have a device tree binding since SoCs contain
integrated root complexes.

Use the nvmem of_* binding to fetch the nvmem cells by a struct
device_node. We still have to try to read the cell by device first
because there might be a nvmem_cell_lookup associated with that device.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoof: net: pass the dst buffer to of_get_mac_address()
Michael Walle [Mon, 12 Apr 2021 17:47:17 +0000 (19:47 +0200)]
of: net: pass the dst buffer to of_get_mac_address()

of_get_mac_address() returns a "const void*" pointer to a MAC address.
Lately, support to fetch the MAC address by an NVMEM provider was added.
But this will only work with platform devices. It will not work with
PCI devices (e.g. of an integrated root complex) and esp. not with DSA
ports.

There is an of_* variant of the nvmem binding which works without
devices. The returned data of a nvmem_cell_read() has to be freed after
use. On the other hand the return of_get_mac_address() points to some
static data without a lifetime. The trick for now, was to allocate a
device resource managed buffer which is then returned. This will only
work if we have an actual device.

Change it, so that the caller of of_get_mac_address() has to supply a
buffer where the MAC address is written to. Unfortunately, this will
touch all drivers which use the of_get_mac_address().

Usually the code looks like:

  const char *addr;
  addr = of_get_mac_address(np);
  if (!IS_ERR(addr))
    ether_addr_copy(ndev->dev_addr, addr);

This can then be simply rewritten as:

  of_get_mac_address(np, ndev->dev_addr);

Sometimes is_valid_ether_addr() is used to test the MAC address.
of_get_mac_address() already makes sure, it just returns a valid MAC
address. Thus we can just test its return code. But we have to be
careful if there are still other sources for the MAC address before the
of_get_mac_address(). In this case we have to keep the
is_valid_ether_addr() call.

The following coccinelle patch was used to convert common cases to the
new style. Afterwards, I've manually gone over the drivers and fixed the
return code variable: either used a new one or if one was already
available use that. Mansour Moufid, thanks for that coccinelle patch!

<spml>
@a@
identifier x;
expression y, z;
@@
- x = of_get_mac_address(y);
+ x = of_get_mac_address(y, z);
  <...
- ether_addr_copy(z, x);
  ...>

@@
identifier a.x;
@@
- if (<+... x ...+>) {}

@@
identifier a.x;
@@
  if (<+... x ...+>) {
      ...
  }
- else {}

@@
identifier a.x;
expression e;
@@
- if (<+... x ...+>@e)
-     {}
- else
+ if (!(e))
      {...}

@@
expression x, y, z;
@@
- x = of_get_mac_address(y, z);
+ of_get_mac_address(y, z);
  ... when != x
</spml>

All drivers, except drivers/net/ethernet/aeroflex/greth.c, were
compile-time tested.

Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dsa: mt7530: Add support for EEE features
René van Dorst [Mon, 12 Apr 2021 06:50:31 +0000 (08:50 +0200)]
net: dsa: mt7530: Add support for EEE features

This patch adds EEE support.

Signed-off-by: René van Dorst <opensource@vdorst.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge tag 'wireless-drivers-next-2021-04-13' of git://git.kernel.org/pub/scm/linux...
David S. Miller [Tue, 13 Apr 2021 21:12:34 +0000 (14:12 -0700)]
Merge tag 'wireless-drivers-next-2021-04-13' of git://git./linux/kernel/git/kvalo/wireless-drivers-next

Kalle Valo says:

====================
wireless-drivers-next patches for v5.13

First set of patches for v5.13. I have been offline for a couple of
and I have a smaller pull request this time. The next one will be
bigger. Nothing really special standing out.

ath11k

* add initial support for QCN9074, but not enabled yet due to firmware problems

* enable radar detection for 160MHz secondary segment

* handle beacon misses in station mode

rtw88

* 8822c: support firmware crash dump

mt7601u

* enable TDLS support
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agocan: peak_usb: pcan_usb: replace open coded endianness conversion of unaligned data
Marc Kleine-Budde [Mon, 5 Apr 2021 12:44:15 +0000 (14:44 +0200)]
can: peak_usb: pcan_usb: replace open coded endianness conversion of unaligned data

This patch replaces the open coded endianness conversion of unaligned
data by the appropriate get/put_unaligned_leXX() variants.

Link: https://lore.kernel.org/r/20210406111622.1874957-11-mkl@pengutronix.de
Acked-by: Stephane Grosjean <s.grosjean@peak-system.com>
Tested-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
3 years agocan: peak_usb: pcan_usb_get_serial(): unconditionally assign serial_number
Marc Kleine-Budde [Mon, 5 Apr 2021 17:52:19 +0000 (19:52 +0200)]
can: peak_usb: pcan_usb_get_serial(): unconditionally assign serial_number

The function serial_number is only called from one location with a
valid serial_number pointer. Remove not needed NULL pointer check.

Link: https://lore.kernel.org/r/20210406111622.1874957-10-mkl@pengutronix.de
Acked-by: Stephane Grosjean <s.grosjean@peak-system.com>
Tested-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
3 years agocan: peak_usb: pcan_usb_get_serial(): make use of le32_to_cpup()
Marc Kleine-Budde [Mon, 5 Apr 2021 11:49:45 +0000 (13:49 +0200)]
can: peak_usb: pcan_usb_get_serial(): make use of le32_to_cpup()

This patch replaces the memcpy() + le32_to_cpu() by le32_to_cpup().

Link: https://lore.kernel.org/r/20210406111622.1874957-9-mkl@pengutronix.de
Acked-by: Stephane Grosjean <s.grosjean@peak-system.com>
Tested-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
3 years agocan: peak_usb: pcan_usb_get_serial(): remove error message from error path
Marc Kleine-Budde [Mon, 5 Apr 2021 17:52:19 +0000 (19:52 +0200)]
can: peak_usb: pcan_usb_get_serial(): remove error message from error path

The caller of pcan_usb_get_serial() already prints an error message,
so remove this one and return immediately.

Link: https://lore.kernel.org/r/20210406111622.1874957-8-mkl@pengutronix.de
Acked-by: Stephane Grosjean <s.grosjean@peak-system.com>
Tested-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
3 years agocan: peak_usb: pcan_usb_{,pro}_get_device_id(): remove unneeded check for device_id
Marc Kleine-Budde [Mon, 5 Apr 2021 11:49:45 +0000 (13:49 +0200)]
can: peak_usb: pcan_usb_{,pro}_get_device_id(): remove unneeded check for device_id

The callback struct peak_usb_adapter::dev_get_device_id, which is
implemented by the functions pcan_usb_{,pro}_get_device_id() is only
ever called with a valid device_id pointer.

This patch removes the unneeded check if the device_id pointer is
valid.

Link: https://lore.kernel.org/r/20210406111622.1874957-7-mkl@pengutronix.de
Acked-by: Stephane Grosjean <s.grosjean@peak-system.com>
Tested-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
3 years agocan: peak_usb: peak_usb_probe(): make use of driver_info
Marc Kleine-Budde [Mon, 5 Apr 2021 10:34:56 +0000 (12:34 +0200)]
can: peak_usb: peak_usb_probe(): make use of driver_info

There's no need to iterate over all supported adapters to find the
struct peak_usb_adapter that describes the currently probed devices's
capabilities. The driver core gives us the information for free, if we
assign it to the struct usb_device_id::driver_info.

This patch assigns the usb_device_id::driver_info and converts
peak_usb_probe() to make use of it. This reduces the driver size by
100 bytes on ARCH=arm.

| add/remove: 0/1 grow/shrink: 0/1 up/down: 0/-124 (-124)
| Function                                     old     new   delta
| peak_usb_adapters_list                        24       -     -24
| peak_usb_probe                               236     136    -100
| Total: Before=25263, After=25139, chg -0.49%

Link: https://lore.kernel.org/r/20210406111622.1874957-6-mkl@pengutronix.de
Acked-by: Stephane Grosjean <s.grosjean@peak-system.com>
Tested-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
3 years agocan: peak_usb: remove write only variable struct peak_usb_adapter::ts_period
Marc Kleine-Budde [Sat, 3 Apr 2021 12:10:25 +0000 (14:10 +0200)]
can: peak_usb: remove write only variable struct peak_usb_adapter::ts_period

The variable struct peak_usb_adapter::ts_period is only ever written
to. This patch removes it from the driver.

Link: https://lore.kernel.org/r/20210406111622.1874957-5-mkl@pengutronix.de
Acked-by: Stephane Grosjean <s.grosjean@peak-system.com>
Tested-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
3 years agocan: peak_usb: remove unused variables from struct peak_usb_device
Marc Kleine-Budde [Mon, 5 Apr 2021 13:05:28 +0000 (15:05 +0200)]
can: peak_usb: remove unused variables from struct peak_usb_device

This patch removes the unused variables struct
peak_usb_device::echo_skb and struct peak_usb_device::bus_load from
the driver.

Link: https://lore.kernel.org/r/20210406111622.1874957-4-mkl@pengutronix.de
Acked-by: Stephane Grosjean <s.grosjean@peak-system.com>
Tested-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
3 years agocan: peak_usb: pcan_usb_pro.h: remove double space in indention
Marc Kleine-Budde [Mon, 5 Apr 2021 19:31:52 +0000 (21:31 +0200)]
can: peak_usb: pcan_usb_pro.h: remove double space in indention

This patch replaces the double space indention after the u8 with a
single space in pcan_usb_pro.h.

Link: https://lore.kernel.org/r/20210406111622.1874957-3-mkl@pengutronix.de
Acked-by: Stephane Grosjean <s.grosjean@peak-system.com>
Tested-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
3 years agocan: peak_usb: fix checkpatch warnings
Marc Kleine-Budde [Mon, 5 Apr 2021 10:34:56 +0000 (12:34 +0200)]
can: peak_usb: fix checkpatch warnings

This patch cleans several checkpatch warnings in the peak_usb driver.

Link: https://lore.kernel.org/r/20210406111622.1874957-2-mkl@pengutronix.de
Acked-by: Stephane Grosjean <s.grosjean@peak-system.com>
Tested-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
3 years agocan: etas_es58x: add support for the ETAS ES58X_FD CAN USB interfaces
Vincent Mailhol [Sat, 10 Apr 2021 09:59:48 +0000 (18:59 +0900)]
can: etas_es58x: add support for the ETAS ES58X_FD CAN USB interfaces

This patch add support for the ES582.1 and ES584.1 interfaces from
ETAS GmbH (https://www.etas.com/en/products/es58x.php).

Link: https://lore.kernel.org/r/20210410095948.233305-4-mailhol.vincent@wanadoo.fr
Co-developed-by: Arunachalam Santhanam <arunachalam.santhanam@in.bosch.com>
Signed-off-by: Arunachalam Santhanam <arunachalam.santhanam@in.bosch.com>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
3 years agocan: etas_es58x: add support for ETAS ES581.4 CAN USB interface
Vincent Mailhol [Sat, 10 Apr 2021 09:59:47 +0000 (18:59 +0900)]
can: etas_es58x: add support for ETAS ES581.4 CAN USB interface

This patch adds support for the ES581.4 interface from ETAS
GmbH (https://www.etas.com/en/products/es58x.php).

Link: https://lore.kernel.org/r/20210410095948.233305-3-mailhol.vincent@wanadoo.fr
Co-developed-by: Arunachalam Santhanam <arunachalam.santhanam@in.bosch.com>
Signed-off-by: Arunachalam Santhanam <arunachalam.santhanam@in.bosch.com>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
3 years agocan: etas_es58x: add core support for ETAS ES58X CAN USB interfaces
Vincent Mailhol [Sat, 10 Apr 2021 09:59:46 +0000 (18:59 +0900)]
can: etas_es58x: add core support for ETAS ES58X CAN USB interfaces

This patch adds the core support for various USB CAN interfaces from
ETAS GmbH (https://www.etas.com/en/products/es58x.php). The next
patches add the glue code drivers for the individual interfaces.

Link: https://lore.kernel.org/r/20210410095948.233305-2-mailhol.vincent@wanadoo.fr
Co-developed-by: Arunachalam Santhanam <arunachalam.santhanam@in.bosch.com>
Signed-off-by: Arunachalam Santhanam <arunachalam.santhanam@in.bosch.com>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
3 years agodt-bindings: net: can: rcar_can: Document r8a77961 support
Yoshihiro Shimoda [Fri, 9 Apr 2021 00:00:20 +0000 (09:00 +0900)]
dt-bindings: net: can: rcar_can: Document r8a77961 support

Document SoC specific bindings for R-Car M3-W+ (r8a77961) SoC.

Also as R8A7796 is now called R8A77960 so that update those
references.

Link: https://lore.kernel.org/r/20210409000020.2317696-1-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
3 years agonet: ethernet: ravb: Enable optional refclk
Adam Ford [Mon, 12 Apr 2021 13:26:19 +0000 (08:26 -0500)]
net: ethernet: ravb: Enable optional refclk

For devices that use a programmable clock for the AVB reference clock,
the driver may need to enable them.  Add code to find the optional clock
and enable it when available.

Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodt-bindings: net: renesas,etheravb: Add additional clocks
Adam Ford [Mon, 12 Apr 2021 13:26:18 +0000 (08:26 -0500)]
dt-bindings: net: renesas,etheravb: Add additional clocks

The AVB driver assumes there is an external crystal, but it could
be clocked by other means.  In order to enable a programmable
clock, it needs to be added to the clocks list and enabled in the
driver.  Since there currently only one clock, there is no
clock-names list either.

Update bindings to add the additional optional clock, and explicitly
name both of them.

Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Sergei Shtylyov <sergei.shtylyov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'enetc-ptp'
David S. Miller [Mon, 12 Apr 2021 20:34:21 +0000 (13:34 -0700)]
Merge branch 'enetc-ptp'

Yangbo Lu says:

====================
enetc: support PTP Sync packet one-step timestamping

This patch-set is to add support for PTP Sync packet one-step timestamping.
Since ENETC single-step register has to be configured dynamically per
packet for correctionField offeset and UDP checksum update, current
one-step timestamping packet has to be sent only when the last one
completes transmitting on hardware. So, on the TX, this patch handles
one-step timestamping packet as below:

- Trasmit packet immediately if no other one in transfer, or queue to
  skb queue if there is already one in transfer.
  The test_and_set_bit_lock() is used here to lock and check state.
- Start a work when complete transfer on hardware, to release the bit
  lock and to send one skb in skb queue if has.

Changes for v2:
- Rebased.
- Fixed issues from patchwork checks.
- netif_tx_lock for one-step timestamping packet sending.
Changes for v3:
- Used system workqueue.
- Set bit lock when transmitted one-step packet, and scheduled
  work when completed. The worker cleared the bit lock, and
  transmitted one skb in skb queue if has, instead of a loop.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoenetc: support PTP Sync packet one-step timestamping
Yangbo Lu [Mon, 12 Apr 2021 09:03:27 +0000 (17:03 +0800)]
enetc: support PTP Sync packet one-step timestamping

This patch is to add support for PTP Sync packet one-step timestamping.
Since ENETC single-step register has to be configured dynamically per
packet for correctionField offeset and UDP checksum update, current
one-step timestamping packet has to be sent only when the last one
completes transmitting on hardware. So, on the TX, this patch handles
one-step timestamping packet as below:

- Trasmit packet immediately if no other one in transfer, or queue to
  skb queue if there is already one in transfer.
  The test_and_set_bit_lock() is used here to lock and check state.
- Start a work when complete transfer on hardware, to release the bit
  lock and to send one skb in skb queue if has.

And the configuration for one-step timestamping on ENETC before
transmitting is,

- Set one-step timestamping flag in extension BD.
- Write 30 bits current timestamp in tstamp field of extension BD.
- Update PTP Sync packet originTimestamp field with current timestamp.
- Configure single-step register for correctionField offeset and UDP
  checksum update.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Reviewed-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoenetc: mark TX timestamp type per skb
Yangbo Lu [Mon, 12 Apr 2021 09:03:26 +0000 (17:03 +0800)]
enetc: mark TX timestamp type per skb

Mark TX timestamp type per skb on skb->cb[0], instead of
global variable for all skbs. This is a preparation for
one step timestamp support.

For one-step timestamping enablement, there will be both
one-step and two-step PTP messages to transfer. And a skb
queue is needed for one-step PTP messages making sure
start to send current message only after the last one
completed on hardware. (ENETC single-step register has to
be dynamically configured per message.) So, marking TX
timestamp type per skb is required.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Reviewed-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'ibmvnic-errors'
David S. Miller [Mon, 12 Apr 2021 20:31:27 +0000 (13:31 -0700)]
Merge branch 'ibmvnic-errors'

Lijun Pan says:

====================
ibmvnic: improve error printing

Patch 1 prints reset reason as a string.
Patch 2 prints adapter state as a string.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoibmvnic: print adapter state as a string
Lijun Pan [Mon, 12 Apr 2021 07:41:28 +0000 (02:41 -0500)]
ibmvnic: print adapter state as a string

The adapter state can be added or deleted over different versions
of the source code. Print a string instead of a number.

Signed-off-by: Lijun Pan <lijunp213@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoibmvnic: print reset reason as a string
Lijun Pan [Mon, 12 Apr 2021 07:41:27 +0000 (02:41 -0500)]
ibmvnic: print reset reason as a string

The reset reason can be added or deleted over different versions
of the source code. Print a string instead of a number.

Signed-off-by: Lijun Pan <lijunp213@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoibmvnic: clean up the remaining debugfs data structures
Lijun Pan [Mon, 12 Apr 2021 07:40:59 +0000 (02:40 -0500)]
ibmvnic: clean up the remaining debugfs data structures

Commit e704f0434ea6 ("ibmvnic: Remove debugfs support") did not
clean up everything. Remove the remaining code.

Signed-off-by: Lijun Pan <lijunp213@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'netns-sysctl-isolation'
David S. Miller [Mon, 12 Apr 2021 20:27:11 +0000 (13:27 -0700)]
Merge branch 'netns-sysctl-isolation'

Jonathon Reinhart says:

====================
Ensuring net sysctl isolation

This patchset is the result of an audit of /proc/sys/net to prove that
it is safe to be mouted read-write in a container when a net namespace
is in use. See [1].

The first commit adds code to detect sysctls which are not netns-safe,
and can "leak" changes to other net namespaces.

My manual audit found, and the above feature confirmed, that there are
two nf_conntrack sysctls which are in fact not netns-safe.

I considered sending the latter to netfilter-devel, but I think it's
better to have both together on net-next: Adding only the former causes
undesirable warnings in the kernel log.

[1]: https://github.com/opencontainers/runc/issues/2826
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonetfilter: conntrack: Make global sysctls readonly in non-init netns
Jonathon Reinhart [Mon, 12 Apr 2021 04:24:53 +0000 (00:24 -0400)]
netfilter: conntrack: Make global sysctls readonly in non-init netns

These sysctls point to global variables:
- NF_SYSCTL_CT_MAX (&nf_conntrack_max)
- NF_SYSCTL_CT_EXPECT_MAX (&nf_ct_expect_max)
- NF_SYSCTL_CT_BUCKETS (&nf_conntrack_htable_size_user)

Because their data pointers are not updated to point to per-netns
structures, they must be marked read-only in a non-init_net ns.
Otherwise, changes in any net namespace are reflected in (leaked into)
all other net namespaces. This problem has existed since the
introduction of net namespaces.

The current logic marks them read-only only if the net namespace is
owned by an unprivileged user (other than init_user_ns).

Commit d0febd81ae77 ("netfilter: conntrack: re-visit sysctls in
unprivileged namespaces") "exposes all sysctls even if the namespace is
unpriviliged." Since we need to mark them readonly in any case, we can
forego the unprivileged user check altogether.

Fixes: d0febd81ae77 ("netfilter: conntrack: re-visit sysctls in unprivileged namespaces")
Signed-off-by: Jonathon Reinhart <Jonathon.Reinhart@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: Ensure net namespace isolation of sysctls
Jonathon Reinhart [Mon, 12 Apr 2021 04:24:52 +0000 (00:24 -0400)]
net: Ensure net namespace isolation of sysctls

This adds an ensure_safe_net_sysctl() check during register_net_sysctl()
to validate that sysctl table entries for a non-init_net netns are
sufficiently isolated. To be netns-safe, an entry must adhere to at
least (and usually exactly) one of these rules:

1. It is marked read-only inside the netns.
2. Its data pointer does not point to kernel/module global data.

An entry which fails both of these checks is indicative of a bug,
whereby a child netns can affect global net sysctl values.

If such an entry is found, this code will issue a warning to the kernel
log, and force the entry to be read-only to prevent a leak.

To test, simply create a new netns:

    $ sudo ip netns add dummy

As it sits now, this patch will WARN for two sysctls which will be
addressed in a subsequent patch:
- /proc/sys/net/netfilter/nf_conntrack_max
- /proc/sys/net/netfilter/nf_conntrack_expect_max

Signed-off-by: Jonathon Reinhart <Jonathon.Reinhart@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonfc: pn533: remove redundant assignment
wengjianfeng [Mon, 12 Apr 2021 02:20:06 +0000 (10:20 +0800)]
nfc: pn533: remove redundant assignment

In many places,first assign a value to a variable and then return
the variable. which is redundant, we should directly return the value.
in pn533_rf_field funciton,return rc also in the if statement, so we
use return 0 to replace the last return rc.

Signed-off-by: wengjianfeng <wengjianfeng@yulong.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'bnxt_en-error-recovery'
David S. Miller [Mon, 12 Apr 2021 20:20:38 +0000 (13:20 -0700)]
Merge branch 'bnxt_en-error-recovery'

Michael Chan says:

====================
bnxt_en: Error recovery fixes.

This series adds some fixes and enhancements to the error recovery
logic.  The health register logic is improved and we also add missing
code to free and re-create VF representors in the firmware after
error recovery.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agobnxt_en: Free and allocate VF-Reps during error recovery.
Sriharsha Basavapatna [Mon, 12 Apr 2021 00:18:15 +0000 (20:18 -0400)]
bnxt_en: Free and allocate VF-Reps during error recovery.

During firmware recovery, VF-Rep configuration in the firmware is lost.
Fix it by freeing and (re)allocating VF-Reps in FW at relevant points
during the error recovery process.

Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agobnxt_en: Refactor __bnxt_vf_reps_destroy().
Michael Chan [Mon, 12 Apr 2021 00:18:14 +0000 (20:18 -0400)]
bnxt_en: Refactor __bnxt_vf_reps_destroy().

Add a new helper function __bnxt_free_one_vf_rep() to free one VF rep.
We also reintialize the VF rep fields to proper initial values so that
the function can be used without freeing the VF rep data structure.  This
will be used in subsequent patches to free and recreate VF reps after
error recovery.

Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Reviewed-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agobnxt_en: Refactor bnxt_vf_reps_create().
Sriharsha Basavapatna [Mon, 12 Apr 2021 00:18:13 +0000 (20:18 -0400)]
bnxt_en: Refactor bnxt_vf_reps_create().

Add a new function bnxt_alloc_vf_rep() to allocate a VF representor.
This function will be needed in subsequent patches to recreate the
VF reps after error recovery.

Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agobnxt_en: Invalidate health register mapping at the end of probe.
Vasundhara Volam [Mon, 12 Apr 2021 00:18:12 +0000 (20:18 -0400)]
bnxt_en: Invalidate health register mapping at the end of probe.

After probe is successful, interface may not be bought up in all
the cases and health register mapping could be invalid if firmware
undergoes reset. Fix it by invalidating the health register at the
end of probe. It will be remapped during ifup.

Fixes: 43a440c4007b ("bnxt_en: Improve the status_reliable flag in bp->fw_health.")
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agobnxt_en: Treat health register value 0 as valid in bnxt_try_reover_fw().
Michael Chan [Mon, 12 Apr 2021 00:18:11 +0000 (20:18 -0400)]
bnxt_en: Treat health register value 0 as valid in bnxt_try_reover_fw().

The retry loop in bnxt_try_recover_fw() should not abort when the
health register value is 0.  It is a valid value that indicates the
firmware is booting up.

Fixes: 861aae786f2f ("bnxt_en: Enhance retry of the first message to the firmware.")
Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: seg6: trivial fix of a spelling mistake in comment
Andrea Mayer [Sat, 10 Apr 2021 17:46:14 +0000 (19:46 +0200)]
net: seg6: trivial fix of a spelling mistake in comment

There is a comment spelling mistake "interfarence" -> "interference" in
function parse_nla_action(). Fix it.

Signed-off-by: Andrea Mayer <andrea.mayer@uniroma2.it>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: Fix potential null pointer defererence of null ae_dev
Colin Ian King [Fri, 9 Apr 2021 16:37:26 +0000 (17:37 +0100)]
net: hns3: Fix potential null pointer defererence of null ae_dev

The reset_prepare and reset_done calls have a null pointer check
on ae_dev however ae_dev is being dereferenced via the call to
ns3_is_phys_func with the ae->pdev argument. Fix this by performing
a null pointer check on ae_dev and hence short-circuiting the
dereference to ae_dev on the call to ns3_is_phys_func.

Addresses-Coverity: ("Dereference before null check")
Fixes: 715c58e94f0d ("net: hns3: add suspend and resume pm_ops")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: thunderx: Fix unintentional sign extension issue
Colin Ian King [Fri, 9 Apr 2021 13:07:26 +0000 (14:07 +0100)]
net: thunderx: Fix unintentional sign extension issue

The shifting of the u8 integers rq->caching by 26 bits to
the left will be promoted to a 32 bit signed int and then
sign-extended to a u64. In the event that rq->caching is
greater than 0x1f then all then all the upper 32 bits of
the u64 end up as also being set because of the int
sign-extension. Fix this by casting the u8 values to a
u64 before the 26 bit left shift.

Addresses-Coverity: ("Unintended sign extension")
Fixes: 4863dea3fab0 ("net: Adding support for Cavium ThunderX network controller")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agocxgb4: Fix unintentional sign extension issues
Colin Ian King [Fri, 9 Apr 2021 11:08:57 +0000 (12:08 +0100)]
cxgb4: Fix unintentional sign extension issues

The shifting of the u8 integers f->fs.nat_lip[] by 24 bits to
the left will be promoted to a 32 bit signed int and then
sign-extended to a u64. In the event that the top bit of the u8
is set then all then all the upper 32 bits of the u64 end up as
also being set because of the sign-extension. Fix this by
casting the u8 values to a u64 before the 24 bit left shift.

Addresses-Coverity: ("Unintended sign extension")
Fixes: 12b276fbf6e0 ("cxgb4: add support to create hash filters")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>