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3 years agonet: hns3: refactor flow director configuration
Jian Shen [Mon, 22 Mar 2021 03:52:00 +0000 (11:52 +0800)]
net: hns3: refactor flow director configuration

Currently, the flow director rule of aRFS is configured in
the IO path. It's time-consuming. So move out the configuration,
and configure it asynchronously. And keep ethtool and tc flower
rule using synchronous way, otherwise the application maybe
unable to know the rule is installed or pending.

Add a state member for each flow director rule to indicate the
rule state. There are 4 states:
TO_ADD: the rule is waiting to add to hardware
TO_DEL: the rule is waiting to remove from hardware
DELETED: the rule has been removed from hardware. It's a middle
        state, used to remove the rule node in the fd_rule_list.
ACTIVE: the rule is already added in hardware

For asynchronous way, when receive a new request to add or delete
flow director rule by aRFS, update the rule list, then request to
schedule the service task to finish the configuration.

For synchronous way, when receive a new request to add or delete
flow director rule by ethtool or tc flower, configure hardware
directly, then update the rule list if success.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: add support for traffic class tuple support for flow director by ethtool
Jian Shen [Mon, 22 Mar 2021 03:51:59 +0000 (11:51 +0800)]
net: hns3: add support for traffic class tuple support for flow director by ethtool

The hardware supports to parse and match the traffic class field
of IPv6 packet for flow director, uses the same tuple as ip tos.
So removes the limitation of configure 'tclass' by driver.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: refactor for function hclge_fd_convert_tuple
Jian Shen [Mon, 22 Mar 2021 03:51:58 +0000 (11:51 +0800)]
net: hns3: refactor for function hclge_fd_convert_tuple

Currently, there are too many branches for hclge_fd_convert_tuple().
And it may be more when add new tuples. Refactor it by sorting the
tuples according to their length. So it only needs several KEY_OPT
now, and being flexible to add new tuples.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: refactor out hclge_fd_get_tuple()
Jian Shen [Mon, 22 Mar 2021 03:51:57 +0000 (11:51 +0800)]
net: hns3: refactor out hclge_fd_get_tuple()

The process of function hclge_fd_get_tuple() is complex and
prolix. To make it more readable, extract the process of each
flow-type tuple to a single function.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: refactor out hclge_add_fd_entry()
Jian Shen [Mon, 22 Mar 2021 03:51:56 +0000 (11:51 +0800)]
net: hns3: refactor out hclge_add_fd_entry()

The process of function hclge_add_fd_entry() is complex and
prolix. To make it more readable, extract the process of
fs->ring_cookie to a single function.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agolinux/qed: Mundane spelling fixes throughout the file
Bhaskar Chowdhury [Mon, 22 Mar 2021 02:55:16 +0000 (08:25 +0530)]
linux/qed: Mundane spelling fixes throughout the file

s/unrequired/"not required"/
s/consme/consume/ .....two different places
s/accros/across/

Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Acked-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoopenvswitch: Fix a typo
Bhaskar Chowdhury [Mon, 22 Mar 2021 02:17:08 +0000 (07:47 +0530)]
openvswitch: Fix a typo

s/subsytem/subsystem/

Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoNFC: Fix a typo
Bhaskar Chowdhury [Mon, 22 Mar 2021 00:54:30 +0000 (06:24 +0530)]
NFC: Fix a typo

s/packaet/packet/

Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'actions-semi-ethernet-mac'
David S. Miller [Mon, 22 Mar 2021 19:56:21 +0000 (12:56 -0700)]
Merge branch 'actions-semi-ethernet-mac'

Cristian Ciocaltea says:

====================
Add support for Actions Semi Owl Ethernet MAC

This patch series adds support for the Ethernet MAC found on the Actions
Semi Owl family of SoCs.

For the moment I have only tested the driver on RoseapplePi SBC, which is
based on the S500 SoC variant. It might work on S900 as well, but I cannot
tell for sure since the S900 datasheet I currently have doesn't provide
any information regarding the MAC registers - so I couldn't check the
compatibility with S500.

Similar story for S700: the datasheet I own is incomplete, but it seems
the MAC is advertised with Gigabit capabilities. For that reason most
probably we need to extend the current implementation in order to support
this SoC variant as well.

Please note that for testing the driver it is also necessary to update the
S500 clock subsystem:

https://lore.kernel.org/lkml/cover.1615221459.git.cristian.ciocaltea@gmail.com/

The DTS changes for the S500 SBCs will be provided separately.

Thanks,
Cristi

Changes in v3:
 - Dropped the 'debug' module parameter and passed the default NETIF_MSG flags
to netif_msg_init(), according to David's review

 - Removed the owl_emac_generate_mac_addr() function and the related
OWL_EMAC_GEN_ADDR_SYS_SN config option until a portable solution to get
the system serial number is found - when building on arm64 the following
error is thrown (as reported by Rob's kernel bot):
 '[...]/owl-emac.c:9:10: fatal error: asm/system_info.h: No such file or directory'

 - Rebased patchset on v5.12-rc4

Changes in v2:
* According to Philipp's review
 - Requested exclusive control over serial line via
   devm_reset_control_get_exclusive()
 - Optimized error handling by using dev_err_probe()

* According to Andrew's review
 - Dropped the inline keywords
 - Applied Reverse Christmas Tree format to local variable declarations
 - Renamed owl_emac_phy_config() to owl_emac_update_link_state()
 - Documented the purpose of the special descriptor used in the context of
   owl_emac_setup_frame_xmit()
 - Updated comment inside owl_emac_mdio_clock_enable() regarding the MDC
   clock divider setup
 - Indicated MAC support for symmetric pause via phy_set_sym_pause()
   in owl_emac_phy_init()
 - Changed the MAC addr generation algorithm in owl_emac_generate_mac_addr()
   by setting the locally administered bit in byte 0 and replacing bytes 1 & 2
   with additional entries from enc_sn
 - Moved devm_add_action_or_reset() before clk_set_rate() in owl_emac_probe()

* Other
 - Added SMII interface support: updated owl_emac_core_sw_reset(), added
   owl_emac_clk_set_rate(), updated description in the YAML binding
 - Changed OWL_EMAC_TX_TIMEOUT from 0.05*HZ to 2*HZ
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMAINTAINERS: Add entries for Actions Semi Owl Ethernet MAC
Cristian Ciocaltea [Sun, 21 Mar 2021 23:29:45 +0000 (01:29 +0200)]
MAINTAINERS: Add entries for Actions Semi Owl Ethernet MAC

Add entries for Actions Semi Owl Ethernet MAC binding and driver.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: ethernet: actions: Add Actions Semi Owl Ethernet MAC driver
Cristian Ciocaltea [Sun, 21 Mar 2021 23:29:44 +0000 (01:29 +0200)]
net: ethernet: actions: Add Actions Semi Owl Ethernet MAC driver

Add new driver for the Ethernet MAC used on the Actions Semi Owl
family of SoCs.

Currently this has been tested only on the Actions Semi S500 SoC
variant.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodt-bindings: net: Add Actions Semi Owl Ethernet MAC binding
Cristian Ciocaltea [Sun, 21 Mar 2021 23:29:43 +0000 (01:29 +0200)]
dt-bindings: net: Add Actions Semi Owl Ethernet MAC binding

Add devicetree binding for the Ethernet MAC present on the Actions
Semi Owl family of SoCs.

For the moment advertise only the support for the Actions Semi S500 SoC
variant.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/sched: cls_flower: use nla_get_be32 for TCA_FLOWER_KEY_FLAGS
Vladimir Oltean [Sun, 21 Mar 2021 21:05:49 +0000 (23:05 +0200)]
net/sched: cls_flower: use nla_get_be32 for TCA_FLOWER_KEY_FLAGS

The existing code is functionally correct: iproute2 parses the ip_flags
argument for tc-flower and really packs it as big endian into the
TCA_FLOWER_KEY_FLAGS netlink attribute. But there is a problem in the
fact that W=1 builds complain:

net/sched/cls_flower.c:1047:15: warning: cast to restricted __be32

This is because we should use the dedicated helper for obtaining a
__be32 pointer to the netlink attribute, not a u32 one. This ensures
type correctness for be32_to_cpu.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/sched: cls_flower: use ntohs for struct flow_dissector_key_ports
Vladimir Oltean [Sun, 21 Mar 2021 21:05:48 +0000 (23:05 +0200)]
net/sched: cls_flower: use ntohs for struct flow_dissector_key_ports

A make W=1 build complains that:

net/sched/cls_flower.c:214:20: warning: cast from restricted __be16
net/sched/cls_flower.c:214:20: warning: incorrect type in argument 1 (different base types)
net/sched/cls_flower.c:214:20:    expected unsigned short [usertype] val
net/sched/cls_flower.c:214:20:    got restricted __be16 [usertype] dst

This is because we use htons on struct flow_dissector_key_ports members
src and dst, which are defined as __be16, so they are already in network
byte order, not host. The byte swap function for the other direction
should have been used.

Because htons and ntohs do the same thing (either both swap, or none
does), this change has no functional effect except to silence the
warnings.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonetdev: add netdev_queue_set_dql_min_limit()
Vincent Mailhol [Sun, 21 Mar 2021 13:48:49 +0000 (22:48 +0900)]
netdev: add netdev_queue_set_dql_min_limit()

Add a function to set the dynamic queue limit minimum value.

Some specific drivers might have legitimate reasons to configure
dql.min_limit to a given value. Typically, this is the case when the
PDU of the protocol is smaller than the packet size to used to
carry those frames to the device.

Concrete example: a CAN (Control Area Network) device with an USB 2.0
interface.  The PDU of classical CAN protocol are roughly 16 bytes but
the USB packet size (which is used to carry the CAN frames to the
device) might be up to 512 bytes.  Wen small traffic burst occurs, BQL
algorithm is not able to immediately adjust and this would result in
having to send many small USB packets (i.e packet of 16 bytes for each
CAN frame). Filling up the USB packet with CAN frames is relatively
fast (small latency issue) but the gain of not having to send several
small USB packets is huge (big throughput increase). In this case,
forcing dql.min_limit to a given value that would allow to stuff the
USB packet is always a win.

This function is to be used by network drivers which are able to prove
through a rationale and through empirical tests on several environment
(with other applications, heavy context switching, virtualization...),
that they constantly reach better performances with a specific
predefined dql.min_limit value with no noticeable latency impact.

Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodsa: simplify Kconfig symbols and dependencies
Alexander Lobakin [Fri, 19 Mar 2021 15:46:30 +0000 (15:46 +0000)]
dsa: simplify Kconfig symbols and dependencies

1. Remove CONFIG_HAVE_NET_DSA.

CONFIG_HAVE_NET_DSA is a legacy leftover from the times when drivers
should have selected CONFIG_NET_DSA manually.
Currently, all drivers has explicit 'depends on NET_DSA', so this is
no more needed.

2. CONFIG_HAVE_NET_DSA dependencies became CONFIG_NET_DSA's ones.

 - dropped !S390 dependency which was introduced to be sure NET_DSA
   can select CONFIG_PHYLIB. DSA migrated to Phylink almost 3 years
   ago and the PHY library itself doesn't depend on !S390 since
   commit 870a2b5e4fcd ("phylib: remove !S390 dependeny from Kconfig");
 - INET dependency is kept to be sure we can select NET_SWITCHDEV;
 - NETDEVICES dependency is kept to be sure we can select PHYLINK.

3. DSA drivers menu now depends on NET_DSA.

Instead on 'depends on NET_DSA' on every single driver, the entire
menu now depends on it. This eliminates a lot of duplicated lines
from Kconfig with no loss (when CONFIG_NET_DSA=m, drivers also can
be only m or n).
This also has a nice side effect that there's no more empty menu on
configurations without DSA.

4. Kbuild will now descend into 'drivers/net/dsa' only when
   CONFIG_NET_DSA is y or m.

This is safe since no objects inside this folder can be built without
DSA core, as well as when CONFIG_NET_DSA=m, no objects can be
built-in.

Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoRevert "net: dsa: sja1105: Clear VLAN filtering offload netdev feature"
Vladimir Oltean [Sat, 20 Mar 2021 23:04:45 +0000 (01:04 +0200)]
Revert "net: dsa: sja1105: Clear VLAN filtering offload netdev feature"

This reverts commit e9bf96943b408e6c99dd13fb01cb907335787c61.

The topic of the reverted patch is the support for switches with global
VLAN filtering, added by commit 061f6a505ac3 ("net: dsa: Add
ndo_vlan_rx_{add, kill}_vid implementation"). Be there a switch with 4
ports swp0 -> swp3, and the following setup:

ip link add br0 type bridge vlan_filtering 1
ip link set swp0 master br0
ip link set swp1 master br0

What would happen with VLAN-tagged traffic received on standalone ports
swp2 and swp3? Well, it would get dropped, were it not for the
.ndo_vlan_rx_add_vid and .ndo_vlan_rx_kill_vid implementations (called
from vlan_vid_add and vlan_vid_del respectively). Basically, for DSA
switches where VLAN filtering is a global attribute, we enforce the
standalone ports to have 'rx-vlan-filter: off [fixed]' in their ethtool
features, which lets the user know that all VLAN-tagged packets that are
not explicitly added in the RX filtering list are dropped.

As for the sja1105 driver, at the time of the reverted patch, it was
operating in a pretty handicapped mode when it had ports under a bridge
with vlan_filtering=1. Specifically, it was unable to terminate traffic
through the CPU port (for further explanation see "Traffic support" in
Documentation/networking/dsa/sja1105.rst).

However, since then, the sja1105 driver has made considerable progress,
and that limitation is no longer as severe now. Specifically, since
commit 2cafa72e516f ("net: dsa: sja1105: add a new
best_effort_vlan_filtering devlink parameter"), the driver is able to
perform CPU termination even when some ports are under bridges with
vlan_filtering=1. Then, since commit 8841f6e63f2c ("net: dsa: sja1105:
make devlink property best_effort_vlan_filtering true by default"), this
even became the default operating mode.

So we can now take advantage of the logic in the DSA core.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agor8169: add support for ethtool get_ringparam
Heiner Kallweit [Sat, 20 Mar 2021 22:14:28 +0000 (23:14 +0100)]
r8169: add support for ethtool get_ringparam

Add support for the ethtool get_ringparam operation.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'ipa-cfg-data-updates'
David S. Miller [Sun, 21 Mar 2021 01:56:18 +0000 (18:56 -0700)]
Merge branch 'ipa-cfg-data-updates'

Alex Elder says:

====================
net: ipa: more configuration data updates

This series starts with two patches that should have been included
in an earlier series.  With these in place, QSB settings are
programmed from information found in the data files rather than
being embedded in code.  Support is then added for reprenting
another QSB property (supported for IPA v4.0+).

The third patch updates the definition of the sequencer type used
for an endpoint.  Previously a set of 2-byte symbols with fairly
long names defined the sequencer type, but now those are broken into
1-byte halves whose names are a little more informative.

The fourth patch moves the sequencer type definition so it only
applies to TX endpoints (they aren't valid for RX endpoints).  And
the last makes some minor documentation updates.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: ipa: update some comments in "ipa_data.h"
Alex Elder [Sat, 20 Mar 2021 15:57:07 +0000 (10:57 -0500)]
net: ipa: update some comments in "ipa_data.h"

Fix/expand some comments in "ipa_data.h".

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: ipa: sequencer type is for TX endpoints only
Alex Elder [Sat, 20 Mar 2021 15:57:06 +0000 (10:57 -0500)]
net: ipa: sequencer type is for TX endpoints only

We only program the sequencer type for TX endpoints.  So move the
definition of the sequencer type fields into the TX-specific portion
of the endpoint configuration data.  There's no need to maintain
this in the IPA structure; we can extract it from the configuration
data it points to in the one spot it's needed.

We previously specified the sequencer type for RX endpoints with
INVALID values.  These are no longer needed, so get rid of them.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: ipa: split sequencer type in two
Alex Elder [Sat, 20 Mar 2021 15:57:05 +0000 (10:57 -0500)]
net: ipa: split sequencer type in two

An IPA endpoint has a sequencer that must be configured based on how
the endpoint is to be used.  Currently the IPA code programs the
sequencer type by splitting a value into four 4-bit nibbles.  Doing
that doesn't really add much value, and regardless, a better way of
splitting the sequencer type is into two halves--the lower byte
describing how normal packet processing is handled, and the next
byte describing information about processing replicas.

So split the sequencer type into two sub-parts:  the sequencer type
and the replication sequencer type.  Define the values supported for
the "main" sequencer type, and define the values supported for the
replication part separately.

In addition, the sequencer type names are quite verbose, encoding
what the type includes, but also what it *excludes*.  Rename the
sequencer types in a way that mainly describes the number of passes
that a packet takes through the IPA processing pipeline, and how
many of those passes end by supplying the processed packet to the
microprocessor.

The result expands the supported types beyond what is required for
now, but simplifies the way these are defined.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: ipa: implement MAX_READS_BEATS QSB data
Alex Elder [Sat, 20 Mar 2021 15:57:04 +0000 (10:57 -0500)]
net: ipa: implement MAX_READS_BEATS QSB data

Starting with IPA v4.0, a limit is placed on the number of bytes
outstanding in a transaction, to reduce latency.  The limit is
imposed only if this value is non-zero.

We don't use a non-zero value for SC7180, but newer versions of IPA
do.  Prepare for that by allowing a programmed value to be specified
in the platform configuration data.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: ipa: use configuration data for QSB settings
Alex Elder [Sat, 20 Mar 2021 15:57:03 +0000 (10:57 -0500)]
net: ipa: use configuration data for QSB settings

Use the QSB configuration data in ipa_hardware_config_qsb(), rather
than determining in code what values to use based on IPA version.
Pass configuration data to ipa_hardware_config() so it can be passed
to ipa_hardware_config_qsb().

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: decnet: Fixed multiple coding style issues
Sai Kalyaan Palla [Sat, 20 Mar 2021 06:15:12 +0000 (11:45 +0530)]
net: decnet: Fixed multiple coding style issues

Made changes to coding style as suggested by checkpatch.pl
changes are of the type:
open brace '{' following struct go on the same line
do not use assignment in if condition

Signed-off-by: Sai Kalyaan Palla <saikalyaan63@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch '1GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue
David S. Miller [Fri, 19 Mar 2021 21:24:58 +0000 (14:24 -0700)]
Merge branch '1GbE' of git://git./linux/kernel/git/tnguy/next-queue

Tony Nguyen says:

====================
1GbE Intel Wired LAN Driver Updates 2021-03-19

This series contains updates to igc and e1000e drivers.

Sasha removes unused defines in igc driver.

Jiapeng Zhong changes bool assignments from 0/1 to false/true for igc.

Wei Yongjun marks e1000e_pm_prepare() as __maybe_unused to resolve a
defined but not used warning under certain configurations.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoe1000e: Mark e1000e_pm_prepare() as __maybe_unused
Wei Yongjun [Wed, 17 Mar 2021 14:52:34 +0000 (14:52 +0000)]
e1000e: Mark e1000e_pm_prepare() as __maybe_unused

The function e1000e_pm_prepare() may have no callers depending
on configuration, so it must be marked __maybe_unused to avoid
harmless warning:

drivers/net/ethernet/intel/e1000e/netdev.c:6926:12:
 warning: 'e1000e_pm_prepare' defined but not used [-Wunused-function]
 6926 | static int e1000e_pm_prepare(struct device *dev)
      |            ^~~~~~~~~~~~~~~~~

Fixes: ccf8b940e5fd ("e1000e: Leverage direct_complete to speed up s2ram")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoigc: Assign boolean values to a bool variable
Jiapeng Zhong [Wed, 20 Jan 2021 06:22:58 +0000 (14:22 +0800)]
igc: Assign boolean values to a bool variable

Fix the following coccicheck warnings:

./drivers/net/ethernet/intel/igc/igc_main.c:4961:2-14: WARNING:
Assignment of 0/1 to bool variable.

./drivers/net/ethernet/intel/igc/igc_main.c:4955:2-14: WARNING:
Assignment of 0/1 to bool variable.

./drivers/net/ethernet/intel/igc/igc_main.c:4933:1-13: WARNING:
Assignment of 0/1 to bool variable.

./drivers/net/ethernet/intel/igc/igc_main.c:4592:1-24: WARNING:
Assignment of 0/1 to bool variable.

./drivers/net/ethernet/intel/igc/igc_main.c:4438:2-25: WARNING:
Assignment of 0/1 to bool variable.

./drivers/net/ethernet/intel/igc/igc_main.c:4396:2-25: WARNING:
Assignment of 0/1 to bool variable.

./drivers/net/ethernet/intel/igc/igc_main.c:4018:2-25: WARNING:
Assignment of 0/1 to bool variable.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Zhong <abaci-bugfix@linux.alibaba.com>
Tested-by: Dvora Fuxbrumer <dvorax.fuxbrumer@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoigc: Remove unused MII_CR_LOOPBACK
Sasha Neftin [Sun, 14 Feb 2021 07:17:49 +0000 (09:17 +0200)]
igc: Remove unused MII_CR_LOOPBACK

MII_CR_LOOPBACK masks not in use in i225 device and can be removed.

Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Dvora Fuxbrumer <dvorax.fuxbrumer@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoigc: Remove unused MII_CR_SPEED
Sasha Neftin [Sun, 17 Jan 2021 08:16:45 +0000 (10:16 +0200)]
igc: Remove unused MII_CR_SPEED

Force PHY speed not supported for i225 devices.
MII_CR_SPEED masks not in use in i225 device and can be removed.

Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Dvora Fuxbrumer <dvorax.fuxbrumer@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agonet: add CONFIG_PCPU_DEV_REFCNT
Eric Dumazet [Fri, 19 Mar 2021 17:39:33 +0000 (10:39 -0700)]
net: add CONFIG_PCPU_DEV_REFCNT

I was working on a syzbot issue, claiming one device could not be
dismantled because its refcount was -1

unregister_netdevice: waiting for sit0 to become free. Usage count = -1

It would be nice if syzbot could trigger a warning at the time
this reference count became negative.

This patch adds CONFIG_PCPU_DEV_REFCNT options which defaults
to per cpu variables (as before this patch) on SMP builds.

v2: free_dev label in alloc_netdev_mqs() is moved to avoid
    a compiler warning (-Wunused-label), as reported
    by kernel test robot <lkp@intel.com>

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'ipa-update-config-data'
David S. Miller [Fri, 19 Mar 2021 20:35:54 +0000 (13:35 -0700)]
Merge branch 'ipa-update-config-data'

Alex Elder says:

====================
net: ipa: update configuration data

Each IPA version has a "data" file defining how various things are
configured.  This series gathers a few updates to this information:
  - The first patch makes all configuration data constant
  - The second fixes an incorrect (but seemingly harmless) value
  - The third simplifies things a bit by using implicit zero
    initialization for memory regions that are empty
  - The fourth adds definitions for memory regions that exist but
    are not yet used
  - The fifth use configuration data rather than conditional code to
    set some bus parameters
====================

3 years agonet: ipa: define QSB limits in configuration data
Alex Elder [Fri, 19 Mar 2021 15:24:22 +0000 (10:24 -0500)]
net: ipa: define QSB limits in configuration data

Define the maximum number of reads and writes to configure for the
QSB masters used for IPA in configuration data.

We don't use these values yet; the next commit takes care of that.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: ipa: define some new memory regions
Alex Elder [Fri, 19 Mar 2021 15:24:21 +0000 (10:24 -0500)]
net: ipa: define some new memory regions

There are several memory regions that are defined starting with IPA
v4.0, but which were not used for the SC7180 SoC (IPA v4.2).  Even
though they're not used (yet), define them so they are ready to be
used for SoCs when they become supported.

There are two QUOTA statistics memory regions, one for the modem and
one for the AP.  Define distinct names for these regions, and get
rid of the definition of IPA_MEM_STATS_QUOTA.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: ipa: don't define empty memory regions
Alex Elder [Fri, 19 Mar 2021 15:24:20 +0000 (10:24 -0500)]
net: ipa: don't define empty memory regions

The AP_HEADER memory region for both the SDM845 and SC7180 SoCs has
zero size, and has no canaries.  Defining an offset for such a
zero-length region is not meaningful, so it's better not to define
it at all.  The size of this region is used in the code, but its
value will still be zero because the memory regions are defined in
statically initialized memory.

For the SC7180, the STATS_DROP memory region has a zero size and no
canaries as well.

These regions are the only place where a zero-sized region is
defined despite having no canaries.  Remove them.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: ipa: fix canary count for SC7180 UC_INFO region
Alex Elder [Fri, 19 Mar 2021 15:24:19 +0000 (10:24 -0500)]
net: ipa: fix canary count for SC7180 UC_INFO region

There should be no canary values written before the beginning of the
UC_INFO memory region.  This was correct for SDM845, but somehow was
committed with the wrong value for SC7180.

This bug seems to cause no harm, so we'll just correct it without
back-porting.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: ipa: make all configuration data constant
Alex Elder [Fri, 19 Mar 2021 15:24:18 +0000 (10:24 -0500)]
net: ipa: make all configuration data constant

All of the platform configuration data should be constant, but
that isn't the case for the memory regions, interconnects, and
clocks.  Fix this.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoigc: Remove unused MII_CR_RESET
Sasha Neftin [Mon, 11 Jan 2021 05:17:53 +0000 (07:17 +0200)]
igc: Remove unused MII_CR_RESET

MII_CR_RESET mask not in use in i225 device and can be removed

Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Dvora Fuxbrumer <dvorax.fuxbrumer@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoMerge branch 'mscc-VSC8584-fixes'
David S. Miller [Fri, 19 Mar 2021 19:17:31 +0000 (12:17 -0700)]
Merge branch 'mscc-VSC8584-fixes'

Bjarni Jonasson says:

====================
Fixes applied to VCS8584 family

Three different fixes applied to VSC8584 family:
1. LCPLL reset
2. Serdes calibration
3. Coma mode disabled

The same fixes has already been applied to VSC8514
and most of the functionality can be reused for the VSC8584.

v1 -> v2:
  Preserved reversed christmas tree
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: mscc: coma mode disabled for VSC8584
Bjarni Jonasson [Fri, 19 Mar 2021 13:29:05 +0000 (14:29 +0100)]
net: phy: mscc: coma mode disabled for VSC8584

This patch releases coma mode for VSC8584 as done for VSC8514 in
commit ca0d7fd0a58d ("net: phy: mscc: coma mode disabled for VSC8514")

Fixes: a5afc1678044a ("net: phy: mscc: add support for VSC8584 PHY.")
Signed-off-by: Bjarni Jonasson <bjarni.jonasson@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: mscc: improved serdes calibration applied to VSC8584
Bjarni Jonasson [Fri, 19 Mar 2021 13:29:04 +0000 (14:29 +0100)]
net: phy: mscc: improved serdes calibration applied to VSC8584

Introduced 'FOJI' serdes calibration in commit 85e97f0b984e
("net: phy: mscc: improved serdes calibration applied to VSC8514")
Now including the VSC8584 family.

Fixes: a5afc1678044a ("net: phy: mscc: add support for VSC8584 PHY.")
Signed-off-by: Bjarni Jonasson <bjarni.jonasson@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: mscc: Applying LCPLL reset to VSC8584
Bjarni Jonasson [Fri, 19 Mar 2021 13:29:03 +0000 (14:29 +0100)]
net: phy: mscc: Applying LCPLL reset to VSC8584

Introduced LCPLL reset in
commit d15e08d9fb82 ("net: phy: mscc: adding LCPLL reset to VSC8514").
Now applying this reset to the VSC8584 phy familiy.

Fixes: a5afc1678044a ("net: phy: mscc: add support for VSC8584 PHY.")
Signed-off-by: Bjarni Jonasson <bjarni.jonasson@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: enetc: teardown CBDR during PF/VF unbind
Vladimir Oltean [Fri, 19 Mar 2021 10:08:06 +0000 (12:08 +0200)]
net: enetc: teardown CBDR during PF/VF unbind

Michael reports that after the blamed patch, unbinding a VF would cause
these transactions to remain pending, and trigger some warnings with the
DMA API debug:

$ echo 1 > /sys/bus/pci/devices/0000\:00\:00.0/sriov_numvfs
pci 0000:00:01.0: [1957:ef00] type 00 class 0x020001
fsl_enetc_vf 0000:00:01.0: Adding to iommu group 19
fsl_enetc_vf 0000:00:01.0: enabling device (0000 -> 0002)
fsl_enetc_vf 0000:00:01.0 eno0vf0: renamed from eth0

$ echo 0 > /sys/bus/pci/devices/0000\:00\:00.0/sriov_numvfs
DMA-API: pci 0000:00:01.0: device driver has pending DMA allocations while released from device [count=1]
One of leaked entries details: [size=2048 bytes] [mapped with DMA_BIDIRECTIONAL] [mapped as coherent]
WARNING: CPU: 0 PID: 2547 at kernel/dma/debug.c:853 dma_debug_device_change+0x174/0x1c8
(...)
Call trace:
 dma_debug_device_change+0x174/0x1c8
 blocking_notifier_call_chain+0x74/0xa8
 device_release_driver_internal+0x18c/0x1f0
 device_release_driver+0x20/0x30
 pci_stop_bus_device+0x8c/0xe8
 pci_stop_and_remove_bus_device+0x20/0x38
 pci_iov_remove_virtfn+0xb8/0x128
 sriov_disable+0x3c/0x110
 pci_disable_sriov+0x24/0x30
 enetc_sriov_configure+0x4c/0x108
 sriov_numvfs_store+0x11c/0x198
(...)
DMA-API: Mapped at:
 dma_entry_alloc+0xa4/0x130
 debug_dma_alloc_coherent+0xbc/0x138
 dma_alloc_attrs+0xa4/0x108
 enetc_setup_cbdr+0x4c/0x1d0
 enetc_vf_probe+0x11c/0x250
pci 0000:00:01.0: Removing from iommu group 19

This happens because stupid me moved enetc_teardown_cbdr outside of
enetc_free_si_resources, but did not bother to keep calling
enetc_teardown_cbdr from all the places where enetc_free_si_resources
was called. In particular, now it is no longer called from the main
unbind function, just from the probe error path.

Fixes: 4b47c0b81ffd ("net: enetc: don't initialize unused ports from a separate code path")
Reported-by: Michael Walle <michael@walle.cc>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Tested-by: Michael Walle <michael@walle.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-pf: Fix spelling mistake "ratelimitter" -> "ratelimiter"
Colin Ian King [Fri, 19 Mar 2021 09:54:53 +0000 (09:54 +0000)]
octeontx2-pf: Fix spelling mistake "ratelimitter" -> "ratelimiter"

There is a spelling mistake in an error message. Fix it.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-pf: Fix missing spin_lock_init() in otx2_tc_add_flow()
Wei Yongjun [Fri, 19 Mar 2021 09:41:03 +0000 (09:41 +0000)]
octeontx2-pf: Fix missing spin_lock_init() in otx2_tc_add_flow()

The driver allocates the spinlock but not initialize it.
Use spin_lock_init() on it to initialize it correctly.

Fixes: d8ce30e0cf76 ("octeontx2-pf: add tc flower stats handler for hw offloads")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agor8169: use lower_32_bits/upper_32_bits macros
Heiner Kallweit [Fri, 19 Mar 2021 08:58:36 +0000 (09:58 +0100)]
r8169: use lower_32_bits/upper_32_bits macros

Use the lower_32_bits/upper_32_bits macros to simplify the code.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agohinic: Remove unused variable.
David S. Miller [Fri, 19 Mar 2021 19:02:54 +0000 (12:02 -0700)]
hinic: Remove unused variable.

drivers/net/ethernet/huawei/hinic/hinic_hw_mgmt.c: In function â€˜mgmt_recv_msg_handler’:
drivers/net/ethernet/huawei/hinic/hinic_hw_mgmt.c:443:18: warning: unused variable â€˜pdev’ [-Wunused-variable]
  443 |  struct pci_dev *pdev = pf_to_mgmt->hwif->pdev;
      |                  ^~~~

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'hinic-cleanups'
David S. Miller [Fri, 19 Mar 2021 18:53:17 +0000 (11:53 -0700)]
Merge branch 'hinic-cleanups'

Daode Huang says:

====================
net: hinic; make some cleanup for hinic

This set try to remove the unnecessary output message, add a blank line,
remove the dupliate word and change the deprecated strlcp functions in
hinic driver, for details, please refer to each patch.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hinic: convert strlcpy to strscpy
Daode Huang [Fri, 19 Mar 2021 06:36:25 +0000 (14:36 +0800)]
net: hinic: convert strlcpy to strscpy

Usage of strlcpy in linux kernel has been recently
deprecated[1], so convert hinic driver to strscpy

[1] https://lore.kernel.org/lkml/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL
=V6A6G1oUZcprmknw@mail.gmail.com/

Signed-off-by: Daode Huang <huangdaode@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hinic: remove the repeat word "the" in comment.
Daode Huang [Fri, 19 Mar 2021 06:36:24 +0000 (14:36 +0800)]
net: hinic: remove the repeat word "the" in comment.

There is a duplicate "the" in the comment, so delete it.

Signed-off-by: Daode Huang <huangdaode@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hinic: add a blank line after declarations
Daode Huang [Fri, 19 Mar 2021 06:36:23 +0000 (14:36 +0800)]
net: hinic: add a blank line after declarations

There should be a blank line after declarations, so just add it.

Signed-off-by: Daode Huang <huangdaode@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hinic: Remove unnecessary 'out of memory' message
Daode Huang [Fri, 19 Mar 2021 06:36:22 +0000 (14:36 +0800)]
net: hinic: Remove unnecessary 'out of memory' message

This patch removes unnecessary out of memory message in hinic driver,
fixes the following checkpatch.pl warning:
"WARNING: Possible unnecessary 'out of memory' message"

Signed-off-by: Daode Huang <huangdaode@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoatl1c: use napi_alloc_skb
Sieng Piaw Liew [Fri, 19 Mar 2021 04:13:22 +0000 (12:13 +0800)]
atl1c: use napi_alloc_skb

Using napi_alloc_skb in NAPI context avoids enable/disable IRQs, which
increases iperf3 result by a few Mbps. Since napi_alloc_skb() uses
NET_IP_ALIGN, convert other alloc methods to the same padding. Tested
on Intel Core2 and AMD K10 platforms.

Signed-off-by: Sieng Piaw Liew <liew.s.piaw@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoatl1c: switch to napi_gro_receive
Sieng Piaw Liew [Fri, 19 Mar 2021 03:59:22 +0000 (11:59 +0800)]
atl1c: switch to napi_gro_receive

Changing to napi_gro_receive() improves efficiency significantly. Tested
on Intel Core2-based motherboards and iperf3.

Signed-off-by: Sieng Piaw Liew <liew.s.piaw@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: phy: at803x: remove at803x_aneg_done()
Michael Walle [Thu, 18 Mar 2021 19:44:31 +0000 (20:44 +0100)]
net: phy: at803x: remove at803x_aneg_done()

Here is what Vladimir says about it:

  at803x_aneg_done() keeps the aneg reporting as "not done" even when
  the copper-side link was reported as up, but the in-band autoneg has
  not finished.

  That was the _intended_ behavior when that code was introduced, and
  Heiner have said about it [1]:

  | That's not nice from the PHY:
  | It signals "link up", and if the system asks the PHY for link details,
  | then it sheepishly says "well, link is *almost* up".

  If the specification of phy_aneg_done behavior does not include
  in-band autoneg (and it doesn't), then this piece of code does not
  belong here.

  The fact that we can no longer trigger this code from phylib is yet
  another reason why it fails at its intended (and wrong) purpose and
  should be removed.

Removing the SGMII link check, would just keep the call to
genphy_aneg_done(), which is also the fallback. Thus we can just remove
at803x_aneg_done() altogether.

[1] https://lore.kernel.org/netdev/fdf0074a-2572-5914-6f3e-77202cbf96de@gmail.com/

Suggested-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agotaprio: Handle short intervals and large packets
Kurt Kanzenbach [Thu, 18 Mar 2021 07:34:55 +0000 (08:34 +0100)]
taprio: Handle short intervals and large packets

When using short intervals e.g. below one millisecond, large packets won't be
transmitted at all. The software implementations checks whether the packet can
be fit into the remaining interval. Therefore, it takes the packet length and
the transmission speed into account. That is correct.

However, for large packets it may be that the transmission time exceeds the
interval resulting in no packet transmission. The same situation works fine with
hardware offloading applied.

The problem has been observed with the following schedule and iperf3:

|tc qdisc replace dev lan1 parent root handle 100 taprio \
|   num_tc 8 \
|   map 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 \
|   queues 1@0 1@1 1@2 1@3 1@4 1@5 1@6 1@7 \
|   base-time $base \
|   sched-entry S 0x40 500000 \
|   sched-entry S 0xbf 500000 \
|   clockid CLOCK_TAI \
|   flags 0x00

[...]

|root@tsn:~# iperf3 -c 192.168.2.105
|Connecting to host 192.168.2.105, port 5201
|[  5] local 192.168.2.121 port 52610 connected to 192.168.2.105 port 5201
|[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
|[  5]   0.00-1.00   sec  45.2 KBytes   370 Kbits/sec    0   1.41 KBytes
|[  5]   1.00-2.00   sec  0.00 Bytes  0.00 bits/sec    0   1.41 KBytes

After debugging, it seems that the packet length stored in the SKB is about
7000-8000 bytes. Using a 100 Mbit/s link the transmission time is about 600us
which larger than the interval of 500us.

Therefore, segment the SKB into smaller chunks if the packet is too big. This
yields similar results than the hardware offload:

|root@tsn:~# iperf3 -c 192.168.2.105
|Connecting to host 192.168.2.105, port 5201
|- - - - - - - - - - - - - - - - - - - - - - - - -
|[ ID] Interval           Transfer     Bitrate         Retr
|[  5]   0.00-10.00  sec  48.9 MBytes  41.0 Mbits/sec    0             sender
|[  5]   0.00-10.02  sec  48.7 MBytes  40.7 Mbits/sec                  receiver

Furthermore, the segmentation can be skipped for the full offload case, as the
driver or the hardware is expected to handle this.

Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoselftests: net: forwarding: Fix a typo
Bhaskar Chowdhury [Thu, 18 Mar 2021 23:29:45 +0000 (04:59 +0530)]
selftests: net: forwarding: Fix a typo

s/verfied/verified/

Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'gro-retpoline'
David S. Miller [Fri, 19 Mar 2021 02:51:12 +0000 (19:51 -0700)]
Merge branch 'gro-retpoline'

Alexander Lobakin says:

====================
net: avoid retpoline overhead on VLAN and TEB GRO

dev_gro_receive() uses indirect calls for IP GRO functions, but
it works only for the outermost headers and untagged frames.
Simple VLAN tag before an IP header restores the performance hit.
This simple series straightens the GRO calls for IP headers going
after VLAN tag or inner Ethernet header (GENEVE, NvGRE, VxLAN)
for retpolined kernels.
====================

3 years agoethernet: avoid retpoline overhead on TEB (GENEVE, NvGRE, VxLAN) GRO
Alexander Lobakin [Thu, 18 Mar 2021 18:42:39 +0000 (18:42 +0000)]
ethernet: avoid retpoline overhead on TEB (GENEVE, NvGRE, VxLAN) GRO

The two most popular headers going after Ethernet are IPv4 and IPv6.
Retpoline overhead for them is addressed only in dev_gro_receive(),
when they lie right after the outermost Ethernet header.
Use the indirect call wrappers in TEB (Transparent Ethernet Bridging,
such as GENEVE, NvGRE, VxLAN etc.) GRO receive code to reduce the
penalty when processing the inner headers.

Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agovlan/8021q: avoid retpoline overhead on GRO
Alexander Lobakin [Thu, 18 Mar 2021 18:42:34 +0000 (18:42 +0000)]
vlan/8021q: avoid retpoline overhead on GRO

The two most popular headers going after VLAN are IPv4 and IPv6.
Retpoline overhead for them is addressed only in dev_gro_receive(),
when they lie right after the outermost Ethernet header.
Use the indirect call wrappers in VLAN GRO receive code to reduce
the penalty on receiving tagged frames (when hardware stripping is
off or not available).

Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agogro: add combined call_gro_receive() + INDIRECT_CALL_INET() helper
Alexander Lobakin [Thu, 18 Mar 2021 18:42:30 +0000 (18:42 +0000)]
gro: add combined call_gro_receive() + INDIRECT_CALL_INET() helper

call_gro_receive() is used to limit GRO recursion, but it works only
with callback pointers.
There's a combined version of call_gro_receive() + INDIRECT_CALL_2()
in <net/inet_common.h>, but it doesn't check for IPv6 modularity.
Add a similar new helper to cover both of these. It can and will be
used to avoid retpoline overhead when IP header lies behind another
offloaded proto.

Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agogro: make net/gro.h self-contained
Alexander Lobakin [Thu, 18 Mar 2021 18:42:23 +0000 (18:42 +0000)]
gro: make net/gro.h self-contained

If some source file includes <net/gro.h>, but doesn't include
<linux/indirect_call_wrapper.h>:

In file included from net/8021q/vlan_core.c:7:
./include/net/gro.h:6:1: warning: data definition has no type or storage class
    6 | INDIRECT_CALLABLE_DECLARE(struct sk_buff *ipv6_gro_receive(struct list_head *,
      | ^~~~~~~~~~~~~~~~~~~~~~~~~
./include/net/gro.h:6:1: error: type defaults to â€˜int’ in declaration of â€˜INDIRECT_CALLABLE_DECLARE’ [-Werror=implicit-int]

[...]

Include <linux/indirect_call_wrapper.h> directly. It's small and
won't pull lots of dependencies.
Also add some incomplete struct declarations to be fully stacked.

Fixes: 04f00ab2275f ("net/core: move gro function declarations to separate header ")
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoFix a typo
Bhaskar Chowdhury [Thu, 18 Mar 2021 20:03:42 +0000 (01:33 +0530)]
Fix a typo

s/serisouly/seriously/

...and the sentence construction.

Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'ionic-fixes'
David S. Miller [Fri, 19 Mar 2021 02:16:10 +0000 (19:16 -0700)]
Merge branch 'ionic-fixes'

Shannon Nelson says:

====================
ionic fixes

These are a few little fixes and cleanups found while working
on other features and more testing.
====================

3 years agoionic: protect adminq from early destroy
Shannon Nelson [Fri, 19 Mar 2021 00:48:10 +0000 (17:48 -0700)]
ionic: protect adminq from early destroy

Don't destroy the adminq while there is an outstanding request.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoionic: stop watchdog when in broken state
Shannon Nelson [Fri, 19 Mar 2021 00:48:09 +0000 (17:48 -0700)]
ionic: stop watchdog when in broken state

Up to now we've been ignoring any error return from the
queue starting in the link status check, so we fix that here.
If the driver had to reset and couldn't get things running
properly again, for example after a Tx Timeout and the FW is
not responding to commands, don't let the link watchdog try
to restart the queues.  At this point the user can try to DOWN
and UP the device to clear the errors.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoionic: block actions during fw reset
Shannon Nelson [Fri, 19 Mar 2021 00:48:08 +0000 (17:48 -0700)]
ionic: block actions during fw reset

Block some actions while the FW is in a reset activity
and the queues are not configured.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoionic: update ethtool support bits for BASET
Shannon Nelson [Fri, 19 Mar 2021 00:48:07 +0000 (17:48 -0700)]
ionic: update ethtool support bits for BASET

Add support in get_link_ksettings for a couple of
new BASET connections.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoionic: fix unchecked reference
Shannon Nelson [Fri, 19 Mar 2021 00:48:06 +0000 (17:48 -0700)]
ionic: fix unchecked reference

We can get to the counter without going through the pointer
that the robot complained about.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoionic: simplify the intr_index use in txq_init
Shannon Nelson [Fri, 19 Mar 2021 00:48:05 +0000 (17:48 -0700)]
ionic: simplify the intr_index use in txq_init

The qcq->intr.index was set when the queue was allocated,
there is no need to reach around to find it.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoionic: code cleanup details
Shannon Nelson [Fri, 19 Mar 2021 00:48:04 +0000 (17:48 -0700)]
ionic: code cleanup details

Catch a couple of missing macro name uses, fix a couple
of misspellings, etc.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: ocelot: support multiple bridges
Vladimir Oltean [Thu, 18 Mar 2021 23:36:36 +0000 (01:36 +0200)]
net: ocelot: support multiple bridges

The ocelot switches are a bit odd in that they do not have an STP state
to put the ports into. Instead, the forwarding configuration is delayed
from the typical port_bridge_join into stp_state_set, when the port enters
the BR_STATE_FORWARDING state.

I can only guess that the implementation of this quirk is the reason that
led to the simplification of the driver such that only one bridge could
be offloaded at a time.

We can simplify the data structures somewhat, and introduce a per-port
bridge device pointer and STP state, similar to how the LAG offload
works now (there we have a per-port bonding device pointer and TX
enabled state). This allows offloading multiple bridges with relative
ease, while still keeping in place the quirk to delay the programming of
the PGIDs.

We actually need this change now because we need to remove the bogus
restriction from ocelot_bridge_stp_state_set that ocelot->bridge_mask
needs to contain BIT(port), otherwise that function is a no-op.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: ocelot: Fix deletetion of MRP entries from MAC table
Horatiu Vultur [Thu, 18 Mar 2021 19:29:38 +0000 (20:29 +0100)]
net: ocelot: Fix deletetion of MRP entries from MAC table

When a MRP ring was deleted or disabled, the driver was iterating over
the ports to detect if any other MPR rings exists and in case it didn't
exist it would delete the MAC table entry. But the problem was that it
used the last iterated port to delete the MAC table entry and this could
be a NULL port.

The fix consists of using the port on which the function was called.

Fixes: 7c588c3e96e9733a ("net: ocelot: Extend MRP")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: lapbether: Close the LAPB device before its underlying Ethernet device closes
Xie He [Thu, 18 Mar 2021 19:07:47 +0000 (12:07 -0700)]
net: lapbether: Close the LAPB device before its underlying Ethernet device closes

When a virtual LAPB device's underlying Ethernet device closes, the LAPB
device is also closed.

However, currently the LAPB device is closed after the Ethernet device
closes. It would be better to close it before the Ethernet device closes.
This would allow the LAPB device to transmit a last frame to notify the
other side that it is disconnecting.

Signed-off-by: Xie He <xie.he.0141@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-af: Remove redundant initialization of pointer pfvf
Colin Ian King [Thu, 18 Mar 2021 16:14:28 +0000 (16:14 +0000)]
octeontx2-af: Remove redundant initialization of pointer pfvf

The pointer pfvf is being initialized with a value that is
never read and it is being updated later with a new value.  The
initialization is redundant and can be removed.

Addresses-Coverity: ("Unused value")
Fixes: 56bcef528bd8 ("octeontx2-af: Use npc_install_flow API for promisc and broadcast entries")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: cdc_ncm: drop redundant driver-data assignment
Johan Hovold [Thu, 18 Mar 2021 16:01:42 +0000 (17:01 +0100)]
net: cdc_ncm: drop redundant driver-data assignment

The driver data for the data interface has already been set by
usb_driver_claim_interface() so drop the subsequent redundant
assignment.

Note that this also avoids setting the driver data three times in case
of a combined interface.

Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonfc/fdp: Simplify the return expression of fdp_nci_open()
zuoqilin [Thu, 18 Mar 2021 13:36:40 +0000 (21:36 +0800)]
nfc/fdp: Simplify the return expression of fdp_nci_open()

Simplify the return expression.

Signed-off-by: zuoqilin <zuoqilin@yulong.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years ago/net/core/: fix misspellings using codespell tool
Xiong Zhenwu [Thu, 18 Mar 2021 11:52:13 +0000 (04:52 -0700)]
/net/core/: fix misspellings using codespell tool

A typo is found out by codespell tool in 1734th line of drop_monitor.c:

$ codespell ./net/core/
./net/core/drop_monitor.c:1734: guarnateed  ==> guaranteed

Fix a typo found by codespell.

Signed-off-by: Xiong Zhenwu <xiong.zhenwu@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years ago/net/hsr: fix misspellings using codespell tool
Xiong Zhenwu [Thu, 18 Mar 2021 11:39:41 +0000 (04:39 -0700)]
/net/hsr: fix misspellings using codespell tool

A typo is found out by codespell tool in 111th line of hsr_debugfs.c:

$ codespell ./net/hsr/

net/hsr/hsr_debugfs.c:111: Debufs  ==> Debugfs

Fix typos found by codespell.

Signed-off-by: Xiong Zhenwu <xiong.zhenwu@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoof: of_net: Provide function name and param description
Lee Jones [Thu, 18 Mar 2021 10:40:34 +0000 (10:40 +0000)]
of: of_net: Provide function name and param description

Fixes the following W=1 kernel build warning(s):

 drivers/of/of_net.c:104: warning: Function parameter or member 'np' not described in 'of_get_mac_address'
 drivers/of/of_net.c:104: warning: expecting prototype for mac(). Prototype was for of_get_mac_address() instead

Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Heiner Kallweit <hkallweit1@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: netdev@vger.kernel.org
Cc: devicetree@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agostmmac: intel: Add PSE and PCH PTP clock source selection
Wong, Vee Khee [Wed, 17 Mar 2021 01:32:47 +0000 (09:32 +0800)]
stmmac: intel: Add PSE and PCH PTP clock source selection

Intel mGbE variant implemented in EHL and TGL can be set to select
different clock frequency based on GPO bits in MAC_GPIO_STATUS register.

We introduce a new "void (*ptp_clk_freq_config)(void *priv)" in platform
data so that if a platform is required to configure the frequency of clock
source, in this case Intel mGBE does, the platform-specific configuration
of the PTP clock setting is done when stmmac_ptp_register() is called.

Signed-off-by: Wong, Vee Khee <vee.khee.wong@intel.com>
Signed-off-by: Voon Weifeng <weifeng.voon@intel.com>
Co-developed-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'mv88e6xxx-offload-bridge-flags'
David S. Miller [Thu, 18 Mar 2021 23:24:06 +0000 (16:24 -0700)]
Merge branch 'mv88e6xxx-offload-bridge-flags'

Tobias Waldekranz says:

====================
net: dsa: mv88e6xxx: Offload bridge port flags

Add support for offloading learning and broadcast flooding flags. With
this in place, mv88e6xx supports offloading of all bridge port flags
that are currently supported by the bridge.

Broadcast flooding is somewhat awkward to control as there is no
per-port bit for this like there is for unknown unicast and unknown
multicast. Instead we have to update the ATU entry for the broadcast
address for all currently used FIDs.

v2 -> v3:
  - Only return a netdev from dsa_port_to_bridge_port if the port is
    currently bridged (Vladimir & Florian)

v1 -> v2:
  - Ensure that mv88e6xxx_vtu_get handles VID 0 (Vladimir)
  - Fixed off-by-one in mv88e6xxx_port_set_assoc_vector (Vladimir)
  - Fast age all entries on port when disabling learning (Vladimir)
  - Correctly detect bridge flags on LAG ports (Vladimir)
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dsa: mv88e6xxx: Offload bridge broadcast flooding flag
Tobias Waldekranz [Thu, 18 Mar 2021 19:25:40 +0000 (20:25 +0100)]
net: dsa: mv88e6xxx: Offload bridge broadcast flooding flag

These switches have two modes of classifying broadcast:

1. Broadcast is multicast.
2. Broadcast is its own unique thing that is always flooded
   everywhere.

This driver uses the first option, making sure to load the broadcast
address into all active databases. Because of this, we can support
per-port broadcast flooding by (1) making sure to only set the subset
of ports that have it enabled whenever joining a new bridge or VLAN,
and (2) by updating all active databases whenever the setting is
changed on a port.

Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dsa: mv88e6xxx: Offload bridge learning flag
Tobias Waldekranz [Thu, 18 Mar 2021 19:25:39 +0000 (20:25 +0100)]
net: dsa: mv88e6xxx: Offload bridge learning flag

Allow a user to control automatic learning per port.

Many chips have an explicit "LearningDisable"-bit that can be used for
this, but we opt for setting/clearing the PAV instead, as it works on
all devices at least as far back as 6083.

Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dsa: mv88e6xxx: Flood all traffic classes on standalone ports
Tobias Waldekranz [Thu, 18 Mar 2021 19:25:38 +0000 (20:25 +0100)]
net: dsa: mv88e6xxx: Flood all traffic classes on standalone ports

In accordance with the comment in dsa_port_bridge_leave, standalone
ports shall be configured to flood all types of traffic. This change
aligns the mv88e6xxx driver with that policy.

Previously a standalone port would initially not egress any unknown
traffic, but after joining and then leaving a bridge, it would.

This does not matter that much since we only ever send FROM_CPUs on
standalone ports, but it seems prudent to make sure that the initial
values match those that are applied after a bridging/unbridging cycle.

Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dsa: mv88e6xxx: Use standard helper for broadcast address
Tobias Waldekranz [Thu, 18 Mar 2021 19:25:37 +0000 (20:25 +0100)]
net: dsa: mv88e6xxx: Use standard helper for broadcast address

Use the conventional declaration style of a MAC address in the
kernel (u8 addr[ETH_ALEN]) for the broadcast address, then set it
using the existing helper.

Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dsa: mv88e6xxx: Remove some bureaucracy around querying the VTU
Tobias Waldekranz [Thu, 18 Mar 2021 19:25:36 +0000 (20:25 +0100)]
net: dsa: mv88e6xxx: Remove some bureaucracy around querying the VTU

The hardware has a somewhat quirky protocol for reading out the VTU
entry for a particular VID. But there is no reason why we cannot
create a better API for ourselves in the driver.

Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dsa: mv88e6xxx: Provide generic VTU iterator
Tobias Waldekranz [Thu, 18 Mar 2021 19:25:35 +0000 (20:25 +0100)]
net: dsa: mv88e6xxx: Provide generic VTU iterator

Move the intricacies of correctly iterating over the VTU to a common
implementation.

Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dsa: mv88e6xxx: Avoid useless attempts to fast-age LAGs
Tobias Waldekranz [Thu, 18 Mar 2021 19:25:34 +0000 (20:25 +0100)]
net: dsa: mv88e6xxx: Avoid useless attempts to fast-age LAGs

When a port is a part of a LAG, the ATU will create dynamic entries
belonging to the LAG ID when learning is enabled. So trying to
fast-age those out using the constituent port will have no
effect. Unfortunately the hardware does not support move operations on
LAGs so there is no obvious way to transform the request to target the
LAG instead.

Instead we document this known limitation and at least avoid wasting
any time on it.

Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dsa: Add helper to resolve bridge port from DSA port
Tobias Waldekranz [Thu, 18 Mar 2021 19:25:33 +0000 (20:25 +0100)]
net: dsa: Add helper to resolve bridge port from DSA port

In order for a driver to be able to query a bridge for information
about itself, e.g. reading out port flags, it has to use a netdev that
is known to the bridge. In the simple case, that is just the netdev
representing the port, e.g. swp0 or swp1 in this example:

   br0
   / \
swp0 swp1

But in the case of an offloaded lag, this will be the bond or team
interface, e.g. bond0 in this example:

     br0
     /
  bond0
   / \
swp0 swp1

Add a helper that hides some of this complexity from the
drivers. Then, redefine dsa_port_offloads_bridge_port using the helper
to avoid double accounting of the set of possible offloaded uppers.

Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'ipa-32bit'
David S. Miller [Thu, 18 Mar 2021 23:20:35 +0000 (16:20 -0700)]
Merge branch 'ipa-32bit'

Alex Elder says:

====================
net: ipa: support 32-bit targets

There is currently a configuration dependency that restricts IPA to
be supported only on 64-bit machines.  There are only a few things
that really require that, and those are fixed in this series.  The
last patch in the series removes the CONFIG_64BIT build dependency
for IPA.

Version 2 of this series uses upper_32_bits() rather than creating
a new function to extract bits out of a DMA address.  Version 3 of
uses lower_32_bits() as well.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: ipa: relax 64-bit build requirement
Alex Elder [Thu, 18 Mar 2021 18:59:30 +0000 (13:59 -0500)]
net: ipa: relax 64-bit build requirement

We currently assume the IPA driver is built only for a 64 bit kernel.

When this constraint was put in place it eliminated some do_div()
calls, replacing them with the "/" and "%" operators.  We now only
use these operations on u32 and size_t objects.  In a 32-bit kernel
build, size_t will be 32 bits wide, so there remains no reason to
use do_div() for divide and modulo.

A few recent commits also fix some code that assumes that DMA
addresses are 64 bits wide.

With that, we can get rid of the 64-bit build requirement.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: ipa: fix table alignment requirement
Alex Elder [Thu, 18 Mar 2021 18:59:29 +0000 (13:59 -0500)]
net: ipa: fix table alignment requirement

We currently have a build-time check to ensure that the minimum DMA
allocation alignment satisfies the constraint that IPA filter and
route tables must point to rules that are 128-byte aligned.

But what's really important is that the actual allocated DMA memory
has that alignment, even if the minimum is smaller than that.

Remove the BUILD_BUG_ON() call checking against minimim DMA alignment
and instead verify at rutime that the allocated memory is properly
aligned.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: ipa: use upper_32_bits()
Alex Elder [Thu, 18 Mar 2021 18:59:28 +0000 (13:59 -0500)]
net: ipa: use upper_32_bits()

Use upper_32_bits() to extract the high-order 32 bits of a DMA
address.  This avoids doing a 32-position shift on a DMA address
if it happens not to be 64 bits wide.  Use lower_32_bits() to
extract the low-order 32 bits (because that's what it's for).

Suggested-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: ipa: fix assumptions about DMA address size
Alex Elder [Thu, 18 Mar 2021 18:59:27 +0000 (13:59 -0500)]
net: ipa: fix assumptions about DMA address size

Some build time checks in ipa_table_validate_build() assume that a
DMA address is 64 bits wide.  That is more restrictive than it has
to be.  A route or filter table is 64 bits wide no matter what the
size of a DMA address is on the AP.  The code actually uses a
pointer to __le64 to access table entries, and a fixed constant
IPA_TABLE_ENTRY_SIZE to describe the size of those entries.

Loosen up two checks so they still verify some requirements, but
such that they do not assume the size of a DMA address is 64 bits.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 's390-qeth-next'
David S. Miller [Thu, 18 Mar 2021 23:18:38 +0000 (16:18 -0700)]
Merge branch 's390-qeth-next'

Julian Wiedmann says:

====================
s390/qeth: updates 2021-03-18

please apply the following patch series for qeth to netdev's net-next
tree.

This brings two small optimizations (replace a hard-coded GFP_ATOMIC,
pass through the NAPI budget to enable napi_consume_skb()), and removes
some redundant VLAN filter code.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agos390/qeth: remove RX VLAN filter stubs in L3 driver
Julian Wiedmann [Thu, 18 Mar 2021 18:54:56 +0000 (19:54 +0100)]
s390/qeth: remove RX VLAN filter stubs in L3 driver

The callbacks have been slimmed down to a level where they no longer do
any actual work. So stop pretending that we support the
NETIF_F_HW_VLAN_CTAG_FILTER feature.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agos390/qeth: enable napi_consume_skb() for pending TX buffers
Julian Wiedmann [Thu, 18 Mar 2021 18:54:55 +0000 (19:54 +0100)]
s390/qeth: enable napi_consume_skb() for pending TX buffers

Pending TX buffers are completed from the same NAPI code as normal
TX buffers. Pass the NAPI budget to qeth_tx_complete_buf() so that
the freeing of the completed skbs can be deferred.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agos390/qeth: allocate initial TX Buffer structs with GFP_KERNEL
Julian Wiedmann [Thu, 18 Mar 2021 18:54:54 +0000 (19:54 +0100)]
s390/qeth: allocate initial TX Buffer structs with GFP_KERNEL

qeth_init_qdio_out_buf() is typically called during initialization, and
the GFP_ATOMIC is only needed for a very specific & rare case during TX
completion.

Allow callers to specify a gfp mask, so that the initialization path can
select GFP_KERNEL. While at it also clarify the function name.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'net-xps-improve-the-xps-maps-handling'
David S. Miller [Thu, 18 Mar 2021 21:56:23 +0000 (14:56 -0700)]
Merge branch 'net-xps-improve-the-xps-maps-handling'

Antoine Tenart says:

====================
net: xps: improve the xps maps handling

This series aims at fixing various issues with the xps code, including
out-of-bound accesses and use-after-free. While doing so we try to
improve the xps code maintainability and readability.

The main change is moving dev->num_tc and dev->nr_ids in the xps maps, to
avoid out-of-bound accesses as those two fields can be updated after the
maps have been allocated. This allows further reworks, to improve the
xps code readability and allow to stop taking the rtnl lock when
reading the maps in sysfs. The maps are moved to an array in net_device,
which simplifies the code a lot.

One future improvement may be to remove the use of xps_map_mutex from
net/core/dev.c, but that may require extra care.

Thanks!
Antoine

Since v3:
  - Removed the 3 patches about the rtnl lock and __netif_set_xps_queue
    as there are extra issues. Those patches were not tied to the
    others, and I'll see want can be done as a separate effort.
  - One small fix in patch 12.

Since v2:
  - Patches 13-16 are new to the series.
  - Fixed another issue I found while preparing v3 (use after free of
    old xps maps).
  - Kept the rtnl lock when calling netdev_get_tx_queue and
    netdev_txq_to_tc.
  - Use get_device/put_device when using the sb_dev.
  - Take the rtnl lock in mlx5 and virtio_net when calling
    netif_set_xps_queue.
  - Fixed a coding style issue.

Since v1:
  - Reordered the patches to improve readability and avoid introducing
    issues in between patches.
  - Use dev_maps->nr_ids to allocate the mask in xps_queue_show but
    still default to nr_cpu_ids/dev->num_rx_queues in xps_queue_show
    when dev_maps hasn't been allocated yet for backward
    compatibility.:w
====================

Signed-off-by: David S. Miller <davem@davemloft.net>