Virtually all conventional network drivers are now converted to use
phylink_generic_validate() - only DSA drivers and fman_memac remain,
so lets remove the necessity for network drivers to explicitly set
this member, and default to phylink_generic_validate() when unset.
This is possible as .validate must currently be set.

Any remaining instances that have not been addressed by this patch can
be fixed up later.
Signed-off-by: NRussell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: NVladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/E1or0FZ-001tRa-DI@rmk-PC.armlinux.org.ukSigned-off-by: NJakub Kicinski <kuba@kernel.org>

lan966x_phylink.c doesn't make use of anything from linux/sfp.h, so
remove this unnecessary include.
Signed-off-by: NRussell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1oqzx9-001r9g-HV@rmk-PC.armlinux.org.ukSigned-off-by: NJakub Kicinski <kuba@kernel.org>

Jakub Kicinski says:

====================
genetlink: support per op type policies

While writing new genetlink families I was increasingly annoyed by the fact
that we don't support different policies for do and dump callbacks.
This makes it hard to do proper input validation for dumps which usually
have a lot more narrow range of accepted attributes.

There is also a minor inconvenience of not supporting different per_doit
and post_doit callbacks per op.

This series addresses those problems by introducing another op format.

v3:
 - minor fixes to patch 12 after I took it for a spin with a real family
 - adjust commit msg in patch 8
v2: https://lore.kernel.org/all/20221102213338.194672-1-kuba@kernel.org/
 - wait for net changes to propagate
 - restore the missing comment in patch 1
 - drop extra space in patch 3
 - improve commit message in patch 4
v1: https://lore.kernel.org/all/20221018230728.1039524-1-kuba@kernel.org/
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Prove that the split ops work.
Sadly we need to keep bug-wards compatibility and specify
the same policy for dump as do, even tho we don't parse
inputs for the dump.
Signed-off-by: NJakub Kicinski <kuba@kernel.org>
Reviewed-by: NJacob Keller <jacob.e.keller@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Let families to hook in the new split ops.

They are more flexible and should not be much larger than
full ops. Each split op is 40B while full op is 48B.
Devlink for example has 54 dos and 19 dumps, 2 of the dumps
do not have a do -> 56 full commands = 2688B.
Split ops would have taken 2920B, so 9% more space while
allowing individual per/post doit and per-type policies.
Signed-off-by: NJakub Kicinski <kuba@kernel.org>
Reviewed-by: NJacob Keller <jacob.e.keller@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

All dumpers use the iterators now, inline the cmd by index
stuff into iterator code.
Reviewed-by: NJacob Keller <jacob.e.keller@intel.com>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We can't put the full iterator in the struct ctrl_dump_policy_ctx
because dump context is statically sized by netlink core.
Allocate it dynamically.

Rename policy to dump_map to make the logic a little easier to follow.
Signed-off-by: NJakub Kicinski <kuba@kernel.org>
Reviewed-by: NJacob Keller <jacob.e.keller@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Subsequent changes will expose split op structures to users,
so walking the family ops with just an index will get harder.
Add a structured iterator, convert the simple cases.
Policy dumping needs more careful conversion.
Signed-off-by: NJakub Kicinski <kuba@kernel.org>
Reviewed-by: NJacob Keller <jacob.e.keller@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

All callers go via genl_get_cmd_split() now, so rename it
to genl_get_cmd() remove the original.
Reviewed-by: NJacob Keller <jacob.e.keller@intel.com>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Pass do and dump versions of the op to ctrl_dumppolicy_put_op()
so that it can provide a different policy index for the two.

Since we now look at policies, and those are set appropriately
there's no need to look at the GENL_DONT_VALIDATE_DUMP flag.
Signed-off-by: NJakub Kicinski <kuba@kernel.org>
Reviewed-by: NJacob Keller <jacob.e.keller@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Separate adding doit and dumpit policies for CTRL_CMD_GETPOLICY.
This has no effect until we actually allow do and dump to come
from different sources as netlink_policy_dump_add_policy()
does deduplication.
Signed-off-by: NJakub Kicinski <kuba@kernel.org>
Reviewed-by: NJacob Keller <jacob.e.keller@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Now that genl_get_cmd_split() is informed what type of callback
user is trying to access (do or dump) we can check that this
callback is indeed available and return an error early.
Signed-off-by: NJakub Kicinski <kuba@kernel.org>
Reviewed-by: NJacob Keller <jacob.e.keller@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Set the policy and maxattr pointers based on validation flags.
genl_family_rcv_msg_attrs_parse() will do nothing and return NULL
if maxattrs is zero, so no behavior change is expected.
Signed-off-by: NJakub Kicinski <kuba@kernel.org>
Reviewed-by: NJacob Keller <jacob.e.keller@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We currently have two forms of operations - small ops and "full" ops
(or just ops). The former does not have pointers for some of the less
commonly used features (namely dump start/done and policy).

The "full" ops, however, still don't contain all the necessary
information. In particular the policy is per command ID, while
do and dump often accept different attributes. It's also not
possible to define different pre_doit and post_doit callbacks
for different commands within the family.

At the same time a lot of commands do not support dumping and
therefore all the dump-related information is wasted space.

Create a new command representation which can hold info about
a do implementation or a dump implementation, but not both at
the same time.

Use this new representation on the command execution path
(genl_family_rcv_msg) as we either run a do or a dump and
don't have to create a "full" op there.
Signed-off-by: NJakub Kicinski <kuba@kernel.org>
Reviewed-by: NJacob Keller <jacob.e.keller@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Move the private fields down to form a "private section".
Use the kdoc "private:" label comment thing to hide them
from the main kdoc comment.
Signed-off-by: NJakub Kicinski <kuba@kernel.org>
Reviewed-by: NJohannes Berg <johannes@sipsolutions.net>
Reviewed-by: NJacob Keller <jacob.e.keller@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The code at the top of ctrl_dumppolicy() dumps mappings between
ops and policies. It supports dumping both the entire family and
single op if dump is filtered. But both of those cases are handled
inside a loop, which makes the logic harder to follow and change.
Refactor to split the two cases more clearly.
Signed-off-by: NJakub Kicinski <kuba@kernel.org>
Reviewed-by: NJacob Keller <jacob.e.keller@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Roger Quadros says:

====================
net: ethernet: ti: am65-cpsw: Add suspend/resume support

This series enables PM_SLEEP(suspend/resume) support to
the am65-cpsw network driver.

Dual-emac and Switch mode are tested to work with suspend/resume
on AM62-SK platform.

It can be verified on the following branch
https://github.com/rogerq/linux/commits/for-v6.2/am62-cpsw-lpm-1.0
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

On low power during system suspend the ALE table context is lost.
Save the ALE contect before suspend and restore it after resume.
Signed-off-by: NRoger Quadros <rogerq@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

During suspend resume the context of PORT_VLAN_REG is lost so
save it during suspend and restore it during resume for
host port and slave ports.
Signed-off-by: NRoger Quadros <rogerq@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This can be used by device driver to restore ALE context.
The data produced by cpsw_ale_dump() can be passed to
cpsw_ale_restore().

This is required as on certain platforms the ALE context
is lost on low power suspend/resume.
Signed-off-by: NRoger Quadros <rogerq@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add PM handlers for System suspend/resume.

As DMA driver doesn't yet support suspend/resume we free up
the DMA channels at suspend and acquire and initialize them
at resume.

Move the init/free dma calls to ndo_open/close() hooks so
it is symmetric and easier to invoke from suspend/resume handler.

As CPTS looses contect during suspend/resume, invoke the
necessary CPTS suspend/resume helpers.
Signed-off-by: NRoger Quadros <rogerq@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

CPTS looses context on suspend (e.g. on AM62).
Provide suspend/resume hooks in CPTS driver. These will be
invoked by CPSW driver if CPTS was instantiated by CPSW.
Signed-off-by: NRoger Quadros <rogerq@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

cocci warnings: (new ones prefixed by >>)
>> drivers/net/phy/motorcomm.c:1122:8-35: duplicated argument to & or |
  drivers/net/phy/motorcomm.c:1126:8-35: duplicated argument to & or |
  drivers/net/phy/motorcomm.c:1130:8-34: duplicated argument to & or |
  drivers/net/phy/motorcomm.c:1134:8-34: duplicated argument to & or |

 The second YT8521_RC1R_GE_TX_DELAY_xx should be YT8521_RC1R_FE_TX_DELAY_xx.

Fixes: 70479a40 ("net: phy: Add driver for Motorcomm yt8521 gigabit ethernet phy")
Reported-by: Nkernel test robot <lkp@intel.com>
Reported-by: NJulia Lawall <julia.lawall@lip6.fr>
Signed-off-by: NFrank <Frank.Sae@motor-comm.com>
Reviewed-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

If alloc_page() fails in gve_prefill_rx_pages(), it should return
an error code in the error path.

Fixes: 82fd151d ("gve: Reduce alloc and copy costs in the GQ rx path")
Cc: Jeroen de Borst <jeroendb@google.com>
Cc: Catherine Sullivan <csully@google.com>
Cc: Shailend Chand <shailend@google.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Simplify the code logic of handling the quirk of FEC_QUIRK_HAS_RACC.
If a SoC has the RACC quirk, the driver will enable the 16bit shift
by default in the probe function for a better performance.

This patch handles the logic in one place to make the logic simple
and clean. The patch optimizes the fec_enet_xdp_get_tx_queue function
according to Paolo Abeni's comments, and it also exludes the SoCs that
require to do frame swap from XDP support.
Signed-off-by: NShenwei Wang <shenwei.wang@nxp.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG),
indirect call targets are validated against the expected function
pointer prototype to make sure the call target is valid to help mitigate
ROP attacks. If they are not identical, there is a failure at run time,
which manifests as either a kernel panic or thread getting killed. A
proposed warning in clang aims to catch these at compile time, which
reveals:

  drivers/s390/net/lcs.c:2090:21: error: incompatible function pointer types initializing 'netdev_tx_t (*)(struct sk_buff *, struct net_device *)' (aka 'enum netdev_tx (*)(struct sk_buff *, struct net_device *)') with an expression of type 'int (struct sk_buff *, struct net_device *)' [-Werror,-Wincompatible-function-pointer-types-strict]
          .ndo_start_xmit         = lcs_start_xmit,
                                    ^~~~~~~~~~~~~~
  drivers/s390/net/lcs.c:2097:21: error: incompatible function pointer types initializing 'netdev_tx_t (*)(struct sk_buff *, struct net_device *)' (aka 'enum netdev_tx (*)(struct sk_buff *, struct net_device *)') with an expression of type 'int (struct sk_buff *, struct net_device *)' [-Werror,-Wincompatible-function-pointer-types-strict]
          .ndo_start_xmit         = lcs_start_xmit,
                                    ^~~~~~~~~~~~~~

->ndo_start_xmit() in 'struct net_device_ops' expects a return type of
'netdev_tx_t', not 'int'. Adjust the return type of lcs_start_xmit() to
match the prototype's to resolve the warning and potential CFI failure,
should s390 select ARCH_SUPPORTS_CFI_CLANG in the future.

Link: https://github.com/ClangBuiltLinux/linux/issues/1750Reviewed-by: NAlexandra Winter <wintera@linux.ibm.com>
Reviewed-by: NKees Cook <keescook@chromium.org>
Signed-off-by: NNathan Chancellor <nathan@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG),
indirect call targets are validated against the expected function
pointer prototype to make sure the call target is valid to help mitigate
ROP attacks. If they are not identical, there is a failure at run time,
which manifests as either a kernel panic or thread getting killed. A
proposed warning in clang aims to catch these at compile time, which
reveals:

  drivers/s390/net/netiucv.c:1854:21: error: incompatible function pointer types initializing 'netdev_tx_t (*)(struct sk_buff *, struct net_device *)' (aka 'enum netdev_tx (*)(struct sk_buff *, struct net_device *)') with an expression of type 'int (struct sk_buff *, struct net_device *)' [-Werror,-Wincompatible-function-pointer-types-strict]
          .ndo_start_xmit         = netiucv_tx,
                                    ^~~~~~~~~~

->ndo_start_xmit() in 'struct net_device_ops' expects a return type of
'netdev_tx_t', not 'int'. Adjust the return type of netiucv_tx() to
match the prototype's to resolve the warning and potential CFI failure,
should s390 select ARCH_SUPPORTS_CFI_CLANG in the future.

Additionally, while in the area, remove a comment block that is no
longer relevant.

Link: https://github.com/ClangBuiltLinux/linux/issues/1750Reviewed-by: NAlexandra Winter <wintera@linux.ibm.com>
Reviewed-by: NKees Cook <keescook@chromium.org>
Signed-off-by: NNathan Chancellor <nathan@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG),
indirect call targets are validated against the expected function
pointer prototype to make sure the call target is valid to help mitigate
ROP attacks. If they are not identical, there is a failure at run time,
which manifests as either a kernel panic or thread getting killed. A
proposed warning in clang aims to catch these at compile time, which
reveals:

  drivers/s390/net/ctcm_main.c:1064:21: error: incompatible function pointer types initializing 'netdev_tx_t (*)(struct sk_buff *, struct net_device *)' (aka 'enum netdev_tx (*)(struct sk_buff *, struct net_device *)') with an expression of type 'int (struct sk_buff *, struct net_device *)' [-Werror,-Wincompatible-function-pointer-types-strict]
          .ndo_start_xmit         = ctcm_tx,
                                    ^~~~~~~
  drivers/s390/net/ctcm_main.c:1072:21: error: incompatible function pointer types initializing 'netdev_tx_t (*)(struct sk_buff *, struct net_device *)' (aka 'enum netdev_tx (*)(struct sk_buff *, struct net_device *)') with an expression of type 'int (struct sk_buff *, struct net_device *)' [-Werror,-Wincompatible-function-pointer-types-strict]
          .ndo_start_xmit         = ctcmpc_tx,
                                    ^~~~~~~~~

->ndo_start_xmit() in 'struct net_device_ops' expects a return type of
'netdev_tx_t', not 'int'. Adjust the return type of ctc{mp,}m_tx() to
match the prototype's to resolve the warning and potential CFI failure,
should s390 select ARCH_SUPPORTS_CFI_CLANG in the future.

Additionally, while in the area, remove a comment block that is no
longer relevant.

Link: https://github.com/ClangBuiltLinux/linux/issues/1750Reviewed-by: NAlexandra Winter <wintera@linux.ibm.com>
Reviewed-by: NKees Cook <keescook@chromium.org>
Signed-off-by: NNathan Chancellor <nathan@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Replace the work queue based RX flow with a NAPI implementation
Remove rx_thread and dpmaif_rxq_work.
Enable GRO on RX path.
Introduce dummy network device. its responsibility is
    - Binds one NAPI object for each DL HW queue and acts as
      the agent of all those network devices.
    - Use NAPI object to poll DL packets.
    - Helps to dispatch each packet to the network interface.
Signed-off-by: NHaijun Liu <haijun.liu@mediatek.com>
Co-developed-by: NSreehari Kancharla <sreehari.kancharla@linux.intel.com>
Signed-off-by: NSreehari Kancharla <sreehari.kancharla@linux.intel.com>
Signed-off-by: NChandrashekar Devegowda <chandrashekar.devegowda@intel.com>
Acked-by: NRicardo Martinez <ricardo.martinez@linux.intel.com>
Acked-by: NM Chetan Kumar <m.chetan.kumar@linux.intel.com>
Reviewed-by: NIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

hard_header_len is used by gro_list_prepare() but on Rx, there
is no header so use needed_headroom instead.
Signed-off-by: NIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: NSreehari Kancharla <sreehari.kancharla@linux.intel.com>
Reviewed-by: NSergey Ryazanov <ryazanov.s.a@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When ethtool config rx-vlan-filter, the driver will send
control command to firmware, then set to hardware in this patch.
Signed-off-by: NCai Huoqing <cai.huoqing@linux.dev>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

HINIC has a mailbox for PF-VF communication and the VF driver
could send port control command to PF driver via mailbox.

The control command only can be set to register in PF,
so add support in PF driver for VF PMD driver control
command when VF PMD driver work with linux PF driver.

Then, no need to add handlers to nic_vf_cmd_msg_handler[],
because the host driver just forwards it to the firmware.
Actually the firmware works on a coprocessor MGMT_CPU(inside the NIC)
which will recv and deal with these commands.
Signed-off-by: NCai Huoqing <cai.huoqing@linux.dev>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The print cmd code is in hex, so using hex cmd code intead of
decimal is easy to check the value with print info.
Signed-off-by: NCai Huoqing <cai.huoqing@linux.dev>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

'reg' without any constraints allows multiple items which is not the
intention in DSA port schema (as physical port is expected to have only
one address).
Signed-off-by: NKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: NRob Herring <robh@kernel.org>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

'reg' without any constraints allows multiple items which is not the
intention for Ethernet controller's port number.

Constrain the 'reg' on AX88178 and LAN95xx USB Ethernet Controllers.
Signed-off-by: NKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: NOleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: NRob Herring <robh@kernel.org>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Support basic system-wide suspend and resume functions
Signed-off-by: NAndy Chiu <andy.chiu@sifive.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Support mode switch properly, which is not available before.

If SoC has two Ethernet controllers, by setting both of them into MII
mode, the first controller enters GMII mode, while the second
controller is effectively disabled. This requires configuring (and
maybe enabling) the second controller in the device tree, even though
it cannot be used.
Signed-off-by: NDavid Yang <mmyangfl@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add support for Octeon device CNF95N.
CNF95N is a Octeon Fusion family product with same PCI NIC
characteristics as CN93 which is currently supported by the driver.

update supported device list in Documentation.
Signed-off-by: NVeerasenareddy Burru <vburru@marvell.com>
Link: https://lore.kernel.org/r/20221103060600.1858-1-vburru@marvell.comSigned-off-by: NJakub Kicinski <kuba@kernel.org>

Edward Cree says:

====================
sfc: add basic flower matches to offload

Support offloading TC flower rules with matches on L2-L4 fields.
====================

Link: https://lore.kernel.org/r/cover.1667412458.git.ecree.xilinx@gmail.comSigned-off-by: NJakub Kicinski <kuba@kernel.org>

Support matching on UDP/TCP source and destination ports and TCP flags,
 with masking if supported by the hardware.
Signed-off-by: NEdward Cree <ecree.xilinx@gmail.com>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>