Add support for external synchronization clock via GPIOs.
1PPS signals are handled via the dedicated 3 GPIOs: SDP3_2,
SDP3_3 and GPIO_4.
Previously it was not possible to use the external PTP
synchronization clock.
All possible HW configurations are supported.
	SDP3_2,	SDP3_3,	GPIO_4
	off,	off,	off
	off,	in_A,	off
	off,	out_A,	off
	off,	in_B,	off
	off,	out_B,	off
	in_A,	off,	off
	in_A,	in_B,	off
	in_A,	out_B,	off
	out_A,	off,	off
	out_A,	in_B,	off
	in_B,	off,	off
	in_B,	in_A,	off
	in_B,	out_A,	off
	out_B,	off,	off
	out_B,	in_A,	off
	off,	off,	in_A
	off,	out_A,	in_A
	off,	in_B,	in_A
	off,	out_B,	in_A
	out_A,	off,	in_A
	out_A,	in_B,	in_A
	in_B,	off,	in_A
	in_B,	out_A,	in_A
	out_B,	off,	in_A
	off,	off,	out_A
	off,	in_A,	out_A
	off,	in_B,	out_A
	off,	out_B,	out_A
	in_A,	off,	out_A
	in_A,	in_B,	out_A
	in_A,	out_B,	out_A
	in_B,	off,	out_A
	in_B,	in_A,	out_A
	out_B,	off,	out_A
	out_B,	in_A,	out_A
	off,	off,	in_B
	off,	in_A,	in_B
	off,	out_A,	in_B
	off,	out_B,	in_B
	in_A,	off,	in_B
	in_A,	out_B,	in_B
	out_A,	off,	in_B
	out_B,	off,	in_B
	out_B,	in_A,	in_B
	off,	off,	out_B
	off,	in_A,	out_B
	off,	out_A,	out_B
	off,	in_B,	out_B
	in_A,	off,	out_B
	in_A,	in_B,	out_B
	out_A,	off,	out_B
	out_A,	in_B,	out_B
	in_B,	off,	out_B
	in_B,	in_A,	out_B
	in_B,	out_A,	out_B

Tested with oscilloscope, 1PPS generator and ts2phc.
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Signed-off-by: Piotr Kwapulinski <piotr.kwapulinski@intel.com>
Tested-by: Ashish K <ashishx.k@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Consolidate IPv4 MTU code the same way it is done in IPv6 to have code
aligned in both address families
Signed-off-by: Vadim Fedorenko <vfedorenko@novek.ru>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Replace ip6_dst_mtu_forward with ip6_dst_mtu_maybe_forward and
reuse this code in ip6_mtu. Actually these two functions were
almost duplicates, this change will simplify the maintaince of
mtu calculation code.
Signed-off-by: Vadim Fedorenko <vfedorenko@novek.ru>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Justin Iurman says:

====================
Support for the IOAM Pre-allocated Trace with IPv6

v5:
 - Refine types, min/max and default values for new sysctls
 - Introduce a "_wide" sysctl for each "ioam6_id" sysctl
 - Add more validation on headers before processing data
 - RCU for sc <> ns pointers + appropriate accessors
 - Generic Netlink policies are now per op, not per family anymore
 - Address other comments/remarks from Jakub (thanks again)
 - Revert "__packed" to "__attribute__((packed))" for uapi headers
 - Add tests to cover the functionality added, as requested by David Ahern

v4:
 - Address warnings from checkpatch (ignore errors related to unnamed bitfields
   in the first patch)
 - Use of hweight32 (thanks Jakub)
 - Remove inline keyword from static functions in C files and let the compiler
   decide what to do (thanks Jakub)

v3:
 - Fix warning "unused label 'out_unregister_genl'" by adding conditional macro
 - Fix lwtunnel output redirect bug: dst cache useless in this case, use
   orig_output instead

v2:
 - Fix warning with static for __ioam6_fill_trace_data
 - Fix sparse warning with __force when casting __be64 to __be32
 - Fix unchecked dereference when removing IOAM namespaces or schemas
 - exthdrs.c: Don't drop by default (now: ignore) to match the act bits "00"
 - Add control plane support for the inline insertion (lwtunnel)
 - Provide uapi structures
 - Use __net_timestamp if skb->tstamp is empty
 - Add note about the temporary IANA allocation
 - Remove support for "removable" TLVs
 - Remove support for virtual/anonymous tunnel decapsulation

In-situ Operations, Administration, and Maintenance (IOAM) records
operational and telemetry information in a packet while it traverses
a path between two points in an IOAM domain. It is defined in
draft-ietf-ippm-ioam-data [1]. IOAM data fields can be encapsulated
into a variety of protocols. The IPv6 encapsulation is defined in
draft-ietf-ippm-ioam-ipv6-options [2], via extension headers. IOAM
can be used to complement OAM mechanisms based on e.g. ICMP or other
types of probe packets.

This patchset implements support for the Pre-allocated Trace, carried
by a Hop-by-Hop. Therefore, a new IPv6 Hop-by-Hop TLV option is
introduced, see IANA [3]. The three other IOAM options are not included
in this patchset (Incremental Trace, Proof-of-Transit and Edge-to-Edge).
The main idea behind the IOAM Pre-allocated Trace is that a node
pre-allocates some room in packets for IOAM data. Then, each IOAM node
on the path will insert its data. There exist several interesting use-
cases, e.g. Fast failure detection/isolation or Smart service selection.
Another killer use-case is what we have called Cross-Layer Telemetry,
see the demo video on its repository [4], that aims to make the entire
stack (L2/L3 -> L7) visible for distributed tracing tools (e.g. Jaeger),
instead of the current L5 -> L7 limited view. So, basically, this is a
nice feature for the Linux Kernel.

This patchset also provides support for the control plane part, but only for the
inline insertion (host-to-host use case), through lightweight tunnels. Indeed,
for in-transit traffic, the solution is to have an IPv6-in-IPv6 encapsulation,
which brings some difficulties and still requires a little bit of work and
discussion (ie anonymous tunnel decapsulation and multi egress resolution).

- Patch 1: IPv6 IOAM headers definition
- Patch 2: Data plane support for Pre-allocated Trace
- Patch 3: IOAM Generic Netlink API
- Patch 4: Support for IOAM injection with lwtunnels
- Patch 5: Documentation for new IOAM sysctls
- Patch 6: Test for the IOAM insertion with IPv6

  [1] https://tools.ietf.org/html/draft-ietf-ippm-ioam-data
  [2] https://tools.ietf.org/html/draft-ietf-ippm-ioam-ipv6-options
  [3] https://www.iana.org/assignments/ipv6-parameters/ipv6-parameters.xhtml#ipv6-parameters-2
  [4] https://github.com/iurmanj/cross-layer-telemetry
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

This test evaluates the IOAM insertion for IPv6 by checking the IOAM data
integrity on the receiver.

The topology is formed by 3 nodes: Alpha (sender), Beta (router in-between)
and Gamma (receiver). An IOAM domain is configured from Alpha to Gamma only,
which means not on the reverse path. When Gamma is the destination, Alpha
adds an IOAM option (Pre-allocated Trace) inside a Hop-by-hop and fills the
trace with its own IOAM data. Beta and Gamma also fill the trace. The IOAM
data integrity is checked on Gamma, by comparing with the pre-defined IOAM
configuration (see below).

    +-------------------+            +-------------------+
    |                   |            |                   |
    |    alpha netns    |            |    gamma netns    |
    |                   |            |                   |
    |  +-------------+  |            |  +-------------+  |
    |  |    veth0    |  |            |  |    veth0    |  |
    |  |  db01::2/64 |  |            |  |  db02::2/64 |  |
    |  +-------------+  |            |  +-------------+  |
    |         .         |            |         .         |
    +-------------------+            +-------------------+
              .                                .
              .                                .
              .                                .
    +----------------------------------------------------+
    |         .                                .         |
    |  +-------------+                  +-------------+  |
    |  |    veth0    |                  |    veth1    |  |
    |  |  db01::1/64 | ................ |  db02::1/64 |  |
    |  +-------------+                  +-------------+  |
    |                                                    |
    |                      beta netns                    |
    |                                                    |
    +--------------------------+-------------------------+

~~~~~~~~~~~~~~~~~~~~~~
| IOAM configuration |
~~~~~~~~~~~~~~~~~~~~~~

Alpha
+-----------------------------------------------------------+
| Type                | Value                               |
+-----------------------------------------------------------+
| Node ID             | 1                                   |
+-----------------------------------------------------------+
| Node Wide ID        | 11111111                            |
+-----------------------------------------------------------+
| Ingress ID          | 0xffff (default value)              |
+-----------------------------------------------------------+
| Ingress Wide ID     | 0xffffffff (default value)          |
+-----------------------------------------------------------+
| Egress ID           | 101                                 |
+-----------------------------------------------------------+
| Egress Wide ID      | 101101                              |
+-----------------------------------------------------------+
| Namespace Data      | 0xdeadbee0                          |
+-----------------------------------------------------------+
| Namespace Wide Data | 0xcafec0caf00dc0de                  |
+-----------------------------------------------------------+
| Schema ID           | 777                                 |
+-----------------------------------------------------------+
| Schema Data         | something that will be 4n-aligned   |
+-----------------------------------------------------------+

Note: When Gamma is the destination, Alpha adds an IOAM Pre-allocated Trace
      option inside a Hop-by-hop, where 164 bytes are pre-allocated for the
      trace, with 123 as the IOAM-Namespace and with 0xfff00200 as the trace
      type (= all available options at this time). As a result, and based on
      IOAM configurations here, only both Alpha and Beta should be capable of
      inserting their IOAM data while Gamma won't have enough space and will
      set the overflow bit.

Beta
+-----------------------------------------------------------+
| Type                | Value                               |
+-----------------------------------------------------------+
| Node ID             | 2                                   |
+-----------------------------------------------------------+
| Node Wide ID        | 22222222                            |
+-----------------------------------------------------------+
| Ingress ID          | 201                                 |
+-----------------------------------------------------------+
| Ingress Wide ID     | 201201                              |
+-----------------------------------------------------------+
| Egress ID           | 202                                 |
+-----------------------------------------------------------+
| Egress Wide ID      | 202202                              |
+-----------------------------------------------------------+
| Namespace Data      | 0xdeadbee1                          |
+-----------------------------------------------------------+
| Namespace Wide Data | 0xcafec0caf11dc0de                  |
+-----------------------------------------------------------+
| Schema ID           | 0xffffff (= None)                   |
+-----------------------------------------------------------+
| Schema Data         |                                     |
+-----------------------------------------------------------+

Gamma
+-----------------------------------------------------------+
| Type                | Value                               |
+-----------------------------------------------------------+
| Node ID             | 3                                   |
+-----------------------------------------------------------+
| Node Wide ID        | 33333333                            |
+-----------------------------------------------------------+
| Ingress ID          | 301                                 |
+-----------------------------------------------------------+
| Ingress Wide ID     | 301301                              |
+-----------------------------------------------------------+
| Egress ID           | 0xffff (default value)              |
+-----------------------------------------------------------+
| Egress Wide ID      | 0xffffffff (default value)          |
+-----------------------------------------------------------+
| Namespace Data      | 0xdeadbee2                          |
+-----------------------------------------------------------+
| Namespace Wide Data | 0xcafec0caf22dc0de                  |
+-----------------------------------------------------------+
| Schema ID           | 0xffffff (= None)                   |
+-----------------------------------------------------------+
| Schema Data         |                                     |
+-----------------------------------------------------------+
Signed-off-by: Justin Iurman <justin.iurman@uliege.be>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add documentation for new IOAM sysctls:
 - ioam6_id and ioam6_id_wide: two per-namespace sysctls
 - ioam6_enabled, ioam6_id and ioam6_id_wide: three per-interface sysctls

Example of IOAM configuration based on the following simple topology:

 _____              _____              _____
|     | eth0  eth0 |     | eth1  eth0 |     |
|  A  |.----------.|  B  |.----------.|  C  |
|_____|            |_____|            |_____|

1) Node and interface IDs can be configured for IOAM:

  # IOAM ID of A = 1, IOAM ID of A.eth0 = 11
  (A) sysctl -w net.ipv6.ioam6_id=1
  (A) sysctl -w net.ipv6.conf.eth0.ioam6_id=11

  # IOAM ID of B = 2, IOAM ID of B.eth0 = 21, IOAM ID of B.eth1 = 22
  (B) sysctl -w net.ipv6.ioam6_id=2
  (B) sysctl -w net.ipv6.conf.eth0.ioam6_id=21
  (B) sysctl -w net.ipv6.conf.eth1.ioam6_id=22

  # IOAM ID of C = 3, IOAM ID of C.eth0 = 31
  (C) sysctl -w net.ipv6.ioam6_id=3
  (C) sysctl -w net.ipv6.conf.eth0.ioam6_id=31

  Note that "_wide" IDs equivalents can be configured the same way.

2) Each node can be configured to form an IOAM domain. For instance,
   we allow IOAM from A to C only (not the reverse path), i.e. enable
   IOAM on ingress for B.eth0 and C.eth0:

  (B) sysctl -w net.ipv6.conf.eth0.ioam6_enabled=1
  (C) sysctl -w net.ipv6.conf.eth0.ioam6_enabled=1

3) An IOAM domain (e.g. ID=123) is defined and made known to each node:

  (A) ip ioam namespace add 123
  (B) ip ioam namespace add 123
  (C) ip ioam namespace add 123

4) Finally, an IOAM Pre-allocated Trace can be inserted in traffic sent
   by A when C (e.g. db02::2) is the destination:

  (A) ip -6 route add db02::2/128 encap ioam6 trace type 0x800000 ns 123
      size 12 dev eth0
Signed-off-by: Justin Iurman <justin.iurman@uliege.be>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add support for the IOAM inline insertion (only for the host-to-host use case)
which is per-route configured with lightweight tunnels. The target is iproute2
and the patch is ready. It will be posted as soon as this patchset is merged.
Here is an overview:

$ ip -6 ro ad fc00::1/128 encap ioam6 trace type 0x800000 ns 1 size 12 dev eth0

This example configures an IOAM Pre-allocated Trace option attached to the
fc00::1/128 prefix. The IOAM namespace (ns) is 1, the size of the pre-allocated
trace data block is 12 octets (size) and only the first IOAM data (bit 0:
hop_limit + node id) is included in the trace (type) represented as a bitfield.

The reason why the in-transit (IPv6-in-IPv6 encapsulation) use case is not
implemented is explained on the patchset cover.
Signed-off-by: Justin Iurman <justin.iurman@uliege.be>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add Generic Netlink commands to allow userspace to configure IOAM
namespaces and schemas. The target is iproute2 and the patch is ready.
It will be posted as soon as this patchset is merged. Here is an overview:

$ ip ioam
Usage:	ip ioam { COMMAND | help }
	ip ioam namespace show
	ip ioam namespace add ID [ data DATA32 ] [ wide DATA64 ]
	ip ioam namespace del ID
	ip ioam schema show
	ip ioam schema add ID DATA
	ip ioam schema del ID
	ip ioam namespace set ID schema { ID | none }
Signed-off-by: Justin Iurman <justin.iurman@uliege.be>
Signed-off-by: David S. Miller <davem@davemloft.net>

Implement support for processing the IOAM Pre-allocated Trace with IPv6,
see [1] and [2]. Introduce a new IPv6 Hop-by-Hop TLV option, see IANA [3].

A new per-interface sysctl is introduced. The value is a boolean to accept (=1)
or ignore (=0, by default) IPv6 IOAM options on ingress for an interface:
 - net.ipv6.conf.XXX.ioam6_enabled

Two other sysctls are introduced to define IOAM IDs, represented by an integer.
They are respectively per-namespace and per-interface:
 - net.ipv6.ioam6_id
 - net.ipv6.conf.XXX.ioam6_id

The value of the first one represents the IOAM ID of the node itself (u32; max
and default value = U32_MAX>>8, due to hop limit concatenation) while the other
represents the IOAM ID of an interface (u16; max and default value = U16_MAX).

Each "ioam6_id" sysctl has a "_wide" equivalent:
 - net.ipv6.ioam6_id_wide
 - net.ipv6.conf.XXX.ioam6_id_wide

The value of the first one represents the wide IOAM ID of the node itself (u64;
max and default value = U64_MAX>>8, due to hop limit concatenation) while the
other represents the wide IOAM ID of an interface (u32; max and default value
= U32_MAX).

The use of short and wide equivalents is not exclusive, a deployment could
choose to leverage both. For example, net.ipv6.conf.XXX.ioam6_id (short format)
could be an identifier for a physical interface, whereas
net.ipv6.conf.XXX.ioam6_id_wide (wide format) could be an identifier for a
logical sub-interface. Documentation about new sysctls is provided at the end
of this patchset.

Two relativistic hash tables are used: one for IOAM namespaces, the other for
IOAM schemas. A namespace can only have a single active schema and a schema
can only be attached to a single namespace (1:1 relationship).

  [1] https://tools.ietf.org/html/draft-ietf-ippm-ioam-ipv6-options
  [2] https://tools.ietf.org/html/draft-ietf-ippm-ioam-data
  [3] https://www.iana.org/assignments/ipv6-parameters/ipv6-parameters.xhtml#ipv6-parameters-2Signed-off-by: Justin Iurman <justin.iurman@uliege.be>
Signed-off-by: David S. Miller <davem@davemloft.net>

This patch provides the IPv6 IOAM option header [1] as well as the IOAM
Trace header [2]. An IOAM option must be 4n-aligned. Here is an overview of
a Hop-by-Hop with an IOAM Trace option:

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|  Next header  |  Hdr Ext Len  |    Padding    |    Padding    |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|  Option Type  |  Opt Data Len |    Reserved   |   IOAM Type   |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|         Namespace-ID          | NodeLen | Flags | RemainingLen|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                IOAM-Trace-Type                |    Reserved   |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<-+
|                                                               |  |
|                         node data [n]                         |  |
|                                                               |  |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+  D
|                                                               |  a
|                         node data [n-1]                       |  t
|                                                               |  a
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
~                             ...                               ~  S
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+  p
|                                                               |  a
|                         node data [1]                         |  c
|                                                               |  e
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+  |
|                                                               |  |
|                         node data [0]                         |  |
|                                                               |  |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<-+

The IOAM option header starts at "Option Type" and ends after "IOAM
Type". The IOAM Trace header starts at "Namespace-ID" and ends after
"IOAM-Trace-Type/Reserved".

IOAM Type: either Pre-allocated Trace (=0), Incremental Trace (=1),
Proof-of-Transit (=2) or Edge-to-Edge (=3). Note that both the
Pre-allocated Trace and the Incremental Trace look the same. The two
others are not implemented.

Namespace-ID: IOAM namespace identifier, not to be confused with network
namespaces. It adds further context to IOAM options and associated data,
and allows devices which are IOAM capable to determine whether IOAM
options must be processed or ignored. It can also be used by an operator
to distinguish different operational domains or to identify different
sets of devices.

NodeLen: Length of data added by each node. It depends on the Trace
Type.

Flags: Only the Overflow (O) flag for now. The O flag is set by a
transit node when there are not enough octets left to record its data.

RemainingLen: Remaining free space to record data.

IOAM-Trace-Type: Bit field where each bit corresponds to a specific kind
of IOAM data. See [2] for a detailed list.

  [1] https://tools.ietf.org/html/draft-ietf-ippm-ioam-ipv6-options
  [2] https://tools.ietf.org/html/draft-ietf-ippm-ioam-dataSigned-off-by: Justin Iurman <justin.iurman@uliege.be>
Signed-off-by: David S. Miller <davem@davemloft.net>

The difference between __switchdev_handle_fdb_del_to_device and
switchdev_handle_del_to_device is that the former takes an extra
orig_dev argument, while the latter starts with dev == orig_dev.

We should recurse into the variant that does not lose the orig_dev along
the way. This is relevant when deleting FDB entries pointing towards a
bridge (dev changes to the lower interfaces, but orig_dev shouldn't).

The addition helper already recurses properly, just the deletion one
doesn't.

Fixes: 8ca07176 ("net: switchdev: introduce a fanout helper for SWITCHDEV_FDB_{ADD,DEL}_TO_DEVICE")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

With the semicolon at the end, the compiler sees the shim function as a
declaration and not as a definition, and warns:

'switchdev_handle_fdb_del_to_device' declared 'static' but never defined
Reported-by: kernel test robot <lkp@intel.com>
Fixes: 8ca07176 ("net: switchdev: introduce a fanout helper for SWITCHDEV_FDB_{ADD,DEL}_TO_DEVICE")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Tested-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

The blamed commit was probably not tested on net-next, since it did not
refactor the extra phy id check introduced in commit b856150c ("net:
phy: at803x: mask 1000 Base-X link mode").

Fixes: 8887ca54 ("net: phy: at803x: simplify custom phy id matching")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

We only need to fiddle about with the supported mask after we have
validated the user's requested parameters. Simplify and streamline the
code by moving the linkmode copy and update of the autoneg bit after
validating the user's request.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

Tony Nguyen says:

====================
1GbE Intel Wired LAN Driver Updates 2021-07-20

This series contains updates to e1000e and igc drivers.

Sasha adds initial S0ix support for devices with CSME and adds polling
for exiting of DPG. He sets the PHY to low power idle when in S0ix. He
also adds support for new device IDs for and adds a space to debug
messaging to help with readability for e1000e.

For igc, he ensures that q_vector array is not accessed beyond its
bounds and removes unneeded PHY related checks.

Tree Davies corrects a spelling mistake in e1000e.

Muhammad corrects the value written when there is no TSN offloading
and adjusts timeout value to avoid possible Tx hang for igc.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

This patch changs interrupt order which found by dtbs_check.

$ make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- dtbs_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/net/nxp,dwmac-imx.yaml
arch/arm64/boot/dts/freescale/imx8mp-evk.dt.yaml: ethernet@30bf0000: interrupt-names:0: 'macirq' was expected
arch/arm64/boot/dts/freescale/imx8mp-evk.dt.yaml: ethernet@30bf0000: interrupt-names:1: 'eth_wake_irq' was expected

According to Documentation/devicetree/bindings/net/snps,dwmac.yaml, we
should list interrupt in it's order.
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

In order to automate the verification of DT nodes covert imx-dwmac to
nxp,dwmac-imx.yaml, and pass below checking.

$ make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- dt_binding_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/net/nxp,dwmac-imx.yaml
$ make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- dtbs_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/net/nxp,dwmac-imx.yaml
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Add missing DWMAC IP version in snps,dwmac.yaml which found by below
command, as NXP i.MX8 families support SNPS DWMAC 5.10a IP.

$ make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- dt_binding_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/net/nxp,dwmac-imx.yaml
Documentation/devicetree/bindings/net/nxp,dwmac-imx.example.dt.yaml:
ethernet@30bf0000: compatible: None of ['nxp,imx8mp-dwmac-eqos', 'snps,dwmac-5.10a'] are valid under the given schema
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

As the cycle time is set to maximum of 1s, the TX Hang timeout need to
be increase to avoid possible TX Hang.

There is no dedicated number specific in data sheet for the timeout factor.
Timeout factor was determined during the debugging to solve the "Tx Hang"
issues that happen in some cases mainly during ETF(Earliest TxTime First).

This can be test by using TSN Schedule Tx Tools udp_tai sample application.
Signed-off-by: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@intel.com>
Acked-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>

According to datasheet section 8.12.19, when there's no TSN offloading
Shadow_QbvCycle bit[29:0] must be set to zero for basic scheduling.
Signed-off-by: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli@intel.com>
Tested-by: Dvora Fuxbrumer <dvorax.fuxbrumer@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

i225 devices have only one phy->type: copper. There is no point checking
phy->type during the igc_has_link method from the watchdog that
invoked every 2 seconds.
This patch comes to clean up these pointless checkings.
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>

i225 devices have only one PHY vendor. There is no point checking
_I_PHY_ID during the link establishment and auto-negotiation process.
This patch comes to clean up these pointless checkings.
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>

Ensure that the adapter->q_vector[MAX_Q_VECTORS] array isn't accessed
beyond its size. It was fixed by using a local variable num_q_vectors
as a limit for loop index, and ensure that num_q_vectors is not bigger
than MAX_Q_VECTORS.
Suggested-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
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>

There is a spelling mistake in the comment block.
Signed-off-by: Tree Davies <tdavies@darkphysics.net>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

Minor fixes to allow debug prints more readable.
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>

Add devices IDs for the next LOM generations that will be
available on the next Intel Client platforms
This patch provides the initial support for these devices
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>

Add devices IDs for the next LOM generations that will be
available on the next Intel Client platform (Lunar Lake)
This patch provides the initial support for these devices
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>

After transferring the MAC-PHY interface to the SMBus set the PHY
to S0ix low power idle mode.
Suggested-by: Dima Ruinskiy <dima.ruinskiy@intel.com>
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>

Per guidance from the CSME architecture team, it may take
up to 1 second for unconfiguring dynamic power gating mode.
Practically it can take more time. Wait up to 2.5 seconds to indicate
dynamic power gating exit from the S0ix configuration. Detect
scenarios that take more than 1 second but less than 2.5 seconds
will emit warning message.
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>

On the corporate system, the driver will ask from the CSME
(manageability engine) to perform device settings are required
to allow S0ix residency.
This patch provides initial support.
Reviewed-by: Dima Ruinskiy <dima.ruinskiy@intel.com>
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>

The at803x driver contains a function, at803x_match_phy_id(), which
tests whether the PHY ID matches the value passed, comparing phy_id
with phydev->phy_id and testing all bits that in the driver's mask.

This is the same test that is used to match the driver, with phy_id
replaced with the driver specified ID, phydev->drv->phy_id.

Hence, we already know the value of the bits being tested if we look
at phydev->drv->phy_id directly, and we do not require a complicated
test to check them. Test directly against phydev->drv->phy_id instead.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

The character sequence ??! is a trigraph and causes the following
clang warning:

drivers/net/ethernet/marvell/mvneta.c:2604:39: warning: trigraph ignored [-Wtrigraphs]

Clean this by replacing it with single ?.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The character sequence ??) is a trigraph and causes the following
clang warning:

drivers/atm/idt77252.c:3544:35: warning: trigraph ignored [-Wtrigraphs]

Clean this by replacing it with single ?.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This adds the possibility to configure the RGMII RX/TX clock skew via
devicetree.

Simply set phy mode to "rgmii-id", "rgmii-rxid" or "rgmii-txid" and add
the "rx-internal-delay-ps" or "tx-internal-delay-ps" property to the
devicetree.

Furthermore, a warning is now issued if the phy mode is configured to
"rgmii" and an internal delay is set in the phy (e.g. by pin-strapping),
as in the dp83867 driver.
Signed-off-by: Martin Schiller <ms@dev.tdt.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

Augment the phy link debug prints with the pause state.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

The documentation for Armada 8040 says:

  Bit 2 Field InBandAnEn In-band Auto-Negotiation enable. ...
  When <PortType> = 1 (1000BASE-X) this field must be set to 1.

We presently ignore whether userspace requests autonegotiation or not
through the ethtool ksettings interface. However, we have some network
interfaces that wish to do this. To offer a consistent API across
network interfaces, deny the ability to disable autonegotiation on
mvpp2 hardware when in 1000BASE-X and 2500BASE-X.

This means the only way to switch between 2500BASE-X and 1000BASE-X
on SFPs that support this will be:

 # ethtool -s ethX advertise 0x20000006000 # 1000BASE-X Pause AsymPause
 # ethtool -s ethX advertise 0xe000        # 2500BASE-X Pause AsymPause
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Acked-by: Marek Behún <kabel@kernel.org>
Acked-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The documentation for Armada 38x says:

  Bit 2 Field InBandAnEn In-band Auto-Negotiation enable. ...
  When <PortType> = 1 (1000BASE-X) this field must be set to 1.

We presently ignore whether userspace requests autonegotiation or not
through the ethtool ksettings interface. However, we have some network
interfaces that wish to do this. To offer a consistent API across
network interfaces, deny the ability to disable autonegotiation on
mvneta hardware when in 1000BASE-X and 2500BASE-X.

This means the only way to switch between 2500BASE-X and 1000BASE-X
on SFPs that support this will be:

 # ethtool -s ethX advertise 0x20000002000 # 1000BASE-X Pause
 # ethtool -s ethX advertise 0xa000        # 2500BASE-X Pause
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Acked-by: Marek Behún <kabel@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Root in init user namespace can modify /proc/sys/net/ipv4/ip_forward
without CAP_NET_ADMIN, this doesn't follow the principle of
capabilities. For example, let's take a look at netdev_store(),
root can't modify netdev attribute without CAP_NET_ADMIN.
So let's keep the consistency of permission check logic.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Yang Yang <yang.yang29@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>

Alex Elder says:

====================
arm64: dts: qcom: DTS updates

This series updates some IPA-related DT nodes.

Newer versions of IPA do not require an interconnect between IPA
and SoC internal memory.  The first patch updates the DT binding
to reflect this.

The second patch adds IPA information to "sc7280.dtsi", using only
two interconnects.  It includes the definition of the reserved
memory area used to hold IPA firmware.

The last patch defines the reserved IPA firmware memory area in
"sc7180.dtsi".
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Define the reserved memory space used for IPA firmware for the
Qualcomm SC7180 SoC.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>