If CONFIG_IGB_HWMON is n, gcc warns:

drivers/net/ethernet/intel/igb/e1000_82575.c:2765:17:
 warning: ‘e1000_emc_therm_limit’ defined but not used [-Wunused-const-variable=]
 static const u8 e1000_emc_therm_limit[4] = {
                 ^~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/intel/igb/e1000_82575.c:2759:17:
 warning: ‘e1000_emc_temp_data’ defined but not used [-Wunused-const-variable=]
 static const u8 e1000_emc_temp_data[4] = {
                 ^~~~~~~~~~~~~~~~~~~

Move it into #ifdef block to fix this.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

If CONFIG_PCI_IOV is n, make W=1 warns:

drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c:3909:33:
 warning: ‘cxgb4_mgmt_ethtool_ops’ defined but not used [-Wunused-const-variable=]
 static const struct ethtool_ops cxgb4_mgmt_ethtool_ops = {
                                 ^~~~~~~~~~~~~~~~~~~~~~

Move it into #ifdef block to fix this.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

If CONFIG_PROC_FS is n, gcc warns:

drivers/net/hamradio/bpqether.c:437:36:
 warning: ‘bpq_seqops’ defined but not used [-Wunused-const-variable=]
 static const struct seq_operations bpq_seqops = {
                                    ^~~~~~~~~~
Use #ifdef macro to gurad this.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

On Intel platforms, not all safety features are enabled on the hardware.
The current implementation enable all safety features by default. This
will cause mass error and warning printouts after the module is loaded.

Introduce platform specific safety features flag to enable or disable
each safety features.
Signed-off-by: Wong Vee Khee <vee.khee.wong@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

In the case MICROREAD_CB_TYPE_READER_ALL clang reports a dead code
warning. The error code assigned to variable err is already passed
to async_cb(). The assignment is redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Nigel Christian <nigel.l.christian@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Peng Li says:

====================
net: hdlc: clean up some code style issues

This patchset clean up some code style issues.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Braces {} should be used on all arms of this statement.
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Should not use assignment in if condition.
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

According to the chackpatch.pl, comparison to NULL could
be written "!param".
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

According to the chackpatch.pl,
EXPORT_SYMBOL(foo); should immediately follow its function/variable.
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Fix the checkpatch error as "foo* bar" and should be "foo *bar".
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This patch fixes the checkpatch error about missing a blank line
after declarations.
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This patch removes some redundant blank lines.
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Boris Sukholitko says:

====================
net/sched: act_vlan: Fix modify to allow 0

Currently vlan modification action checks existence of vlan priority by
comparing it to 0. Therefore it is impossible to modify existing vlan
tag to have priority 0.

For example, the following tc command will change the vlan id but will
not affect vlan priority:

tc filter add dev eth1 ingress matchall action vlan modify id 300 \
        priority 0 pipe mirred egress redirect dev eth2

The incoming packet on eth1:

ethertype 802.1Q (0x8100), vlan 200, p 4, ethertype IPv4

will be changed to:

ethertype 802.1Q (0x8100), vlan 300, p 4, ethertype IPv4

although the user has intended to have p == 0.

The fix is to add tcfv_push_prio_exists flag to struct tcf_vlan_params
and rely on it when deciding to set the priority.

The same flag is used to avoid dumping unset vlan priority.

Change Log:
v3 -> v4:
- revert tcf_vlan_get_fill_size change: total size calculation may race vs dump

v2 -> v3:
- Push assumes that the priority is being set
- tcf_vlan_get_fill_size accounts for priority existence

v1 -> v2:
- Do not dump unset priority and fix tests accordingly
- Test for priority 0 modification
====================
Reviewed-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Because explicitly being set, the priority 0 should appear
in the output.
Signed-off-by: Boris Sukholitko <boris.sukholitko@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Dump vlan priority only if it has been previously set.

Fix the tests accordingly.
Signed-off-by: Boris Sukholitko <boris.sukholitko@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Currently vlan modification action checks existence of vlan priority by
comparing it to 0. Therefore it is impossible to modify existing vlan
tag to have priority 0.

For example, the following tc command will change the vlan id but will
not affect vlan priority:

tc filter add dev eth1 ingress matchall action vlan modify id 300 \
        priority 0 pipe mirred egress redirect dev eth2

The incoming packet on eth1:

ethertype 802.1Q (0x8100), vlan 200, p 4, ethertype IPv4

will be changed to:

ethertype 802.1Q (0x8100), vlan 300, p 4, ethertype IPv4

although the user has intended to have p == 0.

The fix is to add tcfv_push_prio_exists flag to struct tcf_vlan_params
and rely on it when deciding to set the priority.

Fixes: 45a497f2 (net/sched: act_vlan: Introduce TCA_VLAN_ACT_MODIFY vlan action)
Signed-off-by: Boris Sukholitko <boris.sukholitko@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

There is a spelling mistake in a dev_warning message. Fix it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Variable 'len' is set to conn_info->max_pkt_payload_len but this
value is never read as it is overwritten with a new value later on,
hence it is a redundant assignment and can be removed.

Clean up the following clang-analyzer warning:

net/nfc/nci/hci.c:164:3: warning: Value stored to 'len' is never read
[clang-analyzer-deadcode.DeadStores]
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

variable 'status' is unneeded and it's noneed to check the
return value of function vxge_reset_all_vpaths,so declare
it as void.
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Support get_pauseparam and set_pauseparam of ethtool_ops.
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Function 'qlcnic_82xx_hw_write_wx_2M' is declared twice, so remove the
repeated declaration.

Cc: Shahed Shaikh <shshaikh@marvell.com>
Cc: Manish Chopra <manishc@marvell.com>
Cc: GR-Linux-NIC-Dev@marvell.com
Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

No functional change.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

After the refactoring introduced in commit 87614b93 ("net: enetc:
create a common enetc_pf_to_port helper"), enetc_pf_to_port was coded up
to return -1 in case the passed PCIe device does not have a recognized
BDF.

Make sure the -1 value is checked by the callers, to appease static
checkers.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

write_msg(netconsole.c:836) calls netpoll_send_udp after a call to
spin_lock_irqsave, which normally disables interrupts; but in PREEMPT_RT
this call just locks an rt_mutex without disabling irqs. In this case,
netpoll_send_udp is called with interrupts enabled.
Signed-off-by: Wander Lairson Costa <wander@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Vadym Kochan says:

====================
Marvell Prestera Switchdev initial updates for firmware version 3.0

This series adds minimal support for firmware version 3.0 which
has such changes like:

    - initial routing support

    - LAG support

    - events interrupt handling changes

Changes just make able to work with new firmware version but
supported features in driver will be added later.

New firmware version was recently merged into linux-firmware tree.

Added ability of loading previous fw major version if the latest one
is missing, also add support for previous FW ABI.

PATCH -> RFC:
    1) Load previous fw version if the latest one is missing (suggested by Andrew Lunn)

    2) Add support for previous FW ABI version (suggested by Andrew Lunn)

RFC v2:
    1) Get rid of automatic decrementing of
       major version but hard code it.

    2) Print error message with file path if
       previous FW could not be loaded.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Lets try to load previous fw version in case the latest one is missing on
existing system.
Signed-off-by: Vadym Kochan <vkochan@marvell.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

New firmware version has some ABI and feature changes like:

    - LAG support
    - initial L3 support
    - changed events handling logic
Signed-off-by: Vadym Kochan <vkochan@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Latest FW IPC flood message format was changed to configure uc/mc
flooding separately, so change code according to this.
Signed-off-by: Vadym Kochan <vkochan@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

There are change in firmware which requires that receiver will
disable event interrupts before handling them and enable them
after finish with handling. Events still may come into the queue
but without receiver interruption.
Signed-off-by: Vadym Kochan <vkochan@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add description for may_sleep to fix the W=1 warnings:

  drivers/net/ethernet/neterion/s2io.c:1110: warning: Function parameter or member 'may_sleep' not described in 'init_tti'
  drivers/net/ethernet/neterion/s2io.c:3335: warning: Function parameter or member 'may_sleep' not described in 'wait_for_cmd_complete'
  drivers/net/ethernet/neterion/s2io.c:4881: warning: Function parameter or member 'may_sleep' not described in 's2io_set_multicast'
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Huazhong Tan says:

====================
net: hns3: add VLAN filter control support

This patchset add VLAN filter control support for HNS3 driver.
====================

Link: https://lore.kernel.org/r/1622428725-30049-1-git-send-email-tanhuazhong@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Add debugfs support for vlan configuraion. create a single file
"vlan_config" for it, and query it by command "cat vlan_config",
return the result to userspace.

The new display style is below:
$ cat vlan_config
I_PORT_VLAN_FILTER: on
E_PORT_VLAN_FILTER: off
FUNC_ID  I_VF_VLAN_FILTER  E_VF_VLAN_FILTER  PORT_VLAN_FILTER_BYPASS
pf       off               on                off
vf0      off               on                off
FUNC_ID  PVID    ACCEPT_TAG1  ACCEPT_TAG2  ACCEPT_UNTAG1  ACCEPT_UNTAG2
pf       0       on           on           on             on
vf0      0       on           on           on             on
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Previously, there is hardware limitation for VF to modify
the VLAN filter state, and the VLAN filter state is default
enabled. Now the limitation has been removed in some device,
so add capability flag to check whether the device supports
modify VLAN filter state. If flag on, user will be able to
modify the VLAN filter state by ethtool -K.
VF needs to send mailbox to request the PF to modify the VLAN
filter state for it.
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

There are some features of VF depend on PF, so it's necessary
for VF to know whether PF supports. For compatibility, modify
the mailbox HCLGE_MBX_GET_TCINFO, extend its function, use to
get the basic information of PF, including mailbox api version
and PF capabilities.
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Previously, with hardware limitation, the port VLAN filter are
effective for both PF and its VFs simultaneously, so a single
function is not able to enable/disable separately, and the VLAN
filter state is default enabled. Now some device supports each
function to bypass port VLAN filter, then each function can
switch VLAN filter separately. Add capability flag to check
whether the device supports modify VLAN filter state. If flag
on, user will be able to modify the VLAN filter state by ethtool
-K.

Furtherly, the default VLAN filter state is also changed
according to whether non-zero VLAN used. Then the device can
receive packet with any VLAN tag if only VLAN 0 used.

The function hclge_need_enable_vport_vlan_filter() is used to
help implement above changes. And the VLAN filter handle for
promisc mode can also be simplified by this function.
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

The struct hclge_vf_vlan_cfg is firstly designed for setting
VLAN filter tag. And it's reused for enable RX VLAN offload
later. It's strange to use member "is_kill" to indicate "enable".
So redefine the struct hclge_vf_vlan_cfg to adapt it.

For there are already 3 subcodes being used in function
hclge_set_vf_vlan_cfg(), use "switch-case" style for each
branch, rather than "if-else". Also simplify the assignment for
each branch to make it more clearly.
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

For the PF have called hclge_update_port_base_vlan_cfg() already
before notify VF, it's unnecessary to update port based VLAN again
when received mailbox request from VF.
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Use struct "hclge_vlan_info" instead of separately parameters
for function hclge_push_vf_port_base_vlan_info(), to make it
more concise.
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Currently, option "qos" is igored by HNS3 driver for command
"ip link set ethx vf <vf id> vlan <vlan id> qos <qos value>".
Add support for it.
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>