This patch modifies NIX functions to operate
with nix_hw context so that existing functions
can be used for both NIX0 and NIX1 blocks. And
the NIX blocks present in the system are initialized
during driver init and freed during exit.
Signed-off-by: NRakesh Babu <rsaladi2@marvell.com>
Signed-off-by: NSubbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: NSunil Goutham <sgoutham@marvell.com>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

AF manages the tasks of allocating, freeing
LFs from RVU blocks to PF and VFs. With new
NIX1 and CPT1 blocks in 98xx, this patch
adds support for handling new blocks too.
Co-developed-by: NSubbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: NSubbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: NRakesh Babu <rsaladi2@marvell.com>
Signed-off-by: NSunil Goutham <sgoutham@marvell.com>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

Since multiple blocks of same type are present in
98xx, modify functions which get resource count and
which update resource count to work with individual
block address instead of block type.
Reviewed-by: NJesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: NSubbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: NSunil Goutham <sgoutham@marvell.com>
Signed-off-by: NRakesh Babu <rsaladi2@marvell.com>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

clang static analysis reports this problem:

drivers/net/ethernet/marvell/mvneta.c:3465:2: warning:
  Attempt to free released memory
        kfree(txq->buf);
        ^~~~~~~~~~~~~~~

When mvneta_txq_sw_init() fails to alloc txq->tso_hdrs,
it frees without poisoning txq->buf.  The error is caught
in the mvneta_setup_txqs() caller which handles the error
by cleaning up all of the txqs with a call to
mvneta_txq_sw_deinit which also frees txq->buf.

Since mvneta_txq_sw_deinit is a general cleaner, all of the
partial cleaning in mvneta_txq_sw_deinit()'s error handling
is not needed.

Fixes: 2adb719d ("net: mvneta: Implement software TSO")
Signed-off-by: NTom Rix <trix@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Mbox implementation in octeontx2 driver has three states
alloc, send and reset in mbox response. VF allocate and
sends message to PF for processing, PF ACKs them back and
reset the mbox memory. In some case we see synchronization
issue where after msgs_acked is incremented and before
mbox_reset API is called, if current execution is scheduled
out and a different thread is scheduled in which checks for
msgs_acked. Since the new thread sees msgs_acked == msgs_sent
it will try to allocate a new message and to send a new mbox
message to PF.Now if mbox_reset is scheduled in, PF will see
'0' in msgs_send.
This patch fixes the issue by calling mbox_reset before
incrementing msgs_acked flag for last processing message and
checks for valid message size.

Fixes: d424b6c0 ("octeontx2-pf: Enable SRIOV and added VF mbox handling")
Signed-off-by: NHariprasad Kelam <hkelam@marvell.com>
Signed-off-by: NGeetha sowjanya <gakula@marvell.com>
Signed-off-by: NSunil Goutham <sgoutham@marvell.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Currently in otx2_open on failure of nix_lf_start
transmit queues are not stopped which are already
started in link_event. Since the tx queues are not
stopped network stack still try's to send the packets
leading to driver crash while access the device resources.

Fixes: 50fe6c02 ("octeontx2-pf: Register and handle link notifications")
Signed-off-by: NHariprasad Kelam <hkelam@marvell.com>
Signed-off-by: NGeetha sowjanya <gakula@marvell.com>
Signed-off-by: NSunil Goutham <sgoutham@marvell.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

For TCP/UDP checksum offload feature in Octeontx2
expects L3TYPE to be set irrespective of IP header
checksum is being offloaded or not. Currently for
IPv6 frames L3TYPE is not being set resulting in
packet drop with checksum error. This patch fixes
this issue.

Fixes: 3ca6c4c8 ("octeontx2-pf: Add packet transmission support")
Signed-off-by: NGeetha sowjanya <gakula@marvell.com>
Signed-off-by: NSunil Goutham <sgoutham@marvell.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Packet replication feature present in Octeontx2
is a hardware linked list of PF and its VF
interfaces so that broadcast packets are sent
to all interfaces present in the list. It is
driver job to add and delete a PF/VF interface
to/from the list when the interface is brought
up and down. This patch fixes the
npc_enadis_default_entries function to handle
broadcast replication properly if packet replication
feature is present.

Fixes: 40df309e ("octeontx2-af: Support to enable/disable default MCAM entries")
Signed-off-by: NSubbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: NGeetha sowjanya <gakula@marvell.com>
Signed-off-by: NSunil Goutham <sgoutham@marvell.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Do not use rx_desc pointers if possible since rx descriptors are stored in
uncached memory and dereferencing rx_desc pointers generate extra loads.
This patch improves XDP_DROP performance of ~ 110Kpps (700Kpps vs 590Kpps)
on Marvell Espressobin
Analyzed-by: NIlias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add support for NAT-T-ESP to KPU parser configuration. NAT ESP is a UDP
based protocol. So move ESP to LE so that both UDP and ESP can be
extracted.
Signed-off-by: NKiran Kumar K <kirankumark@marvell.com>
Acked-by: NSunil Goutham <sgoutham@marvell.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

IPv6 fragmented packet may not contain completed layer 4 information.
So stop KPU parsing after setting ipv6 fragmentation flag.
Signed-off-by: NAbhijit Ayarekar <aayarekar@marvell.com>
Acked-by: NSunil Goutham <sgoutham@marvell.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Added some IPv6 protocol fields to the default MKEX profile.
They include everything from the beginning of IP header and up to
source address. The pattern occupies full KW2 in MCAM entry.
Only one out of two LD registers for this protocol is used.
Signed-off-by: NVidhya Vidhyaraman <vraman@marvell.com>
Acked-by: NSunil Goutham <sgoutham@marvell.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

KPU profile interpret Extended DSA and eDSA by looking source dev. This
was incorrect and it restricts to use few source device ids and also
created confusion while parsing regular DSA tag. With below patch lookup
was based on bit 12 of Word0. This is always zero for DSA tag and it
should be one for Extended DSA and eDSA.
Signed-off-by: NSatha Rao <skoteshwar@marvell.com>
Acked-by: NSunil Goutham <sgoutham@marvell.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Marvell Prestera switches supports distributed switch architecture
by inserting Forward DSA tag of 4 bytes right after ethernet SMAC.
This tag don't have a tpid field.

This patch provides parser and extraction support for the same.
Default ldata extraction profile added for FDSA such that Src_port
is extracted and placed inplace of vlanid field. Like extended DSA
and eDSA tags,a special PKIND of 62 is used for this tag.
Signed-off-by: NHariprasad Kelam <hkelam@marvell.com>
Acked-by: NSunil Goutham <sgoutham@marvell.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Refactor KPU related NPC code gathering all configuration data in a
structured format and putting it in one place (npc_profile.h).
This increases readability and makes it easier to extend the profile
configuration (as opposed to jumping between multiple header and source
files).

To do this:
* Gather all KPU profile related data into a single adapter struct.
* Convert the built-in MKEX definition to a structured one to streamline
  the MKEX loading.
* Convert LT default register configuration into a structure, keeping
  default protocol settings in same file where identifiers for those
  protocols are defined.
* Add a single point for KPU profile loading, so that its source may
  change in the future once proper interfaces for loading such config
  are in place.
Signed-off-by: NStanislaw Kardach <skardach@marvell.com>
Acked-by: NSunil Goutham <sgoutham@marvell.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Since LD contains LTYPE definitions tweaked toward efficient
NIX_AF_RX_FLOW_KEY_ALG(0..31)_FIELD(0..4) usage, the original location
of NPC_LT_LD_CUSTOM0/1 was aliased with MPLS_IN_* definitions.
Moving custom frame to value 6 and 7 removes the aliasing at the cost of
custom frames being also considered when TCP/UDP RSS algo is configured.

However since the goal of CUSTOM frames is to classify them to a
separate set of RQs, this cost is acceptable.
Signed-off-by: NStanislaw Kardach <skardach@marvell.com>
Acked-by: NSunil Goutham <sgoutham@marvell.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

PCI devices support two variants of the D3 power state: D3hot (main power
present) D3cold (main power removed).  Previously struct pci_dev contained:

  unsigned int    d3_delay;       /* D3->D0 transition time in ms */
  unsigned int    d3cold_delay;   /* D3cold->D0 transition time in ms */

"d3_delay" refers specifically to the D3hot state.  Rename it to
"d3hot_delay" to avoid ambiguity and align with the ACPI "_DSM for
Specifying Device Readiness Durations" in the PCI Firmware spec r3.2,
sec 4.6.9.

There is no change to the functionality.

Link: https://lore.kernel.org/r/20200730210848.1578826-1-kw@linux.comSigned-off-by: NKrzysztof Wilczyński <kw@linux.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>

Try to recycle the xdp tx buffer into the in-irq page_pool cache if
mvneta_txq_bufs_free is executed in the NAPI context for XDP_TX use case
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

rivers/net/ethernet/marvell/mvpp2/mvpp2_main.c:7084:36: warning: ‘mvpp2_acpi_match’ defined but not used [-Wunused-const-variable=]
 7084 | static const struct acpi_device_id mvpp2_acpi_match[] = {
      |                                    ^~~~~~~~~~~~~~~~

Wrap the definition inside #ifdef/#endif.

Compile tested only.
Signed-off-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add support to control rx-flow-hash based on VLAN.
By default VLAN plus 4-tuple based hashing is enabled.
Changes can be done runtime using ethtool

To enable 2-tuple plus VLAN based flow distribution
  # ethtool -N <intf> rx-flow-hash <prot> sdv
To enable 4-tuple plus VLAN based flow distribution
  # ethtool -N <intf> rx-flow-hash <prot> sdfnv
Signed-off-by: NGeorge Cherian <george.cherian@marvell.com>
Signed-off-by: NSunil Goutham <sgoutham@marvell.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Added support for PF/VF drivers to choose RSS flow key algorithm
with VLAN tag included in hashing input data. Only CTAG is considered.
Signed-off-by: NGeorge Cherian <george.cherian@marvell.com>
Signed-off-by: NSunil Goutham <sgoutham@marvell.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

With tracepoints support present in the mailbox
code this patch adds tracepoints in PF and VF drivers
at places where mailbox messages are allocated,
sent and at message interrupts.
Signed-off-by: NSubbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: NSunil Goutham <sgoutham@marvell.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Added tracepoints in mailbox code so that
the mailbox operations like message allocation,
sending message and message interrupts are traced.
Also the mailbox errors occurred like timeout
or wrong responses are traced.
These will help in debugging mailbox issues.

Here's an example output showing one of the mailbox
messages sent by PF to AF and AF responding to it:

~# mount -t tracefs none /sys/kernel/tracing/
~# echo 1 > /sys/kernel/tracing/events/rvu/enable
~# ifconfig eth0 up
~# cat /sys/kernel/tracing/trace

~# cat /sys/kernel/tracing/trace
 tracer: nop

		      _-----=> irqs-off
		     / _----=> need-resched
		    | / _---=> hardirq/softirq
		    || / _--=> preempt-depth
		    ||| /     delay
   TASK-PID   CPU#  ||||    TIMESTAMP  FUNCTION
      | |       |   ||||       |         |
ifconfig-2382  [002] ....   756.161892: otx2_msg_alloc: [0002:02:00.0] msg:(0x400) size:40

ifconfig-2382  [002] ...1   756.161895: otx2_msg_send: [0002:02:00.0] sent 1 msg(s) of size:48

 <idle>-0     [000] d.h1   756.161902: otx2_msg_interrupt: [0002:01:00.0] mbox interrupt PF(s) to AF (0x2)

kworker/u49:0-1165  [000] ....   756.162049: otx2_msg_process: [0002:01:00.0] msg:(0x400) error:0

kworker/u49:0-1165  [000] ...1   756.162051: otx2_msg_send: [0002:01:00.0] sent 1 msg(s) of size:32

kworker/u49:0-1165  [000] d.h.   756.162056: otx2_msg_interrupt: [0002:02:00.0] mbox interrupt AF to PF (0x1)
Signed-off-by: NSubbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: NSunil Goutham <sgoutham@marvell.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

drivers/net/ethernet/marvell/mvneta.c:754:6: warning:
 variable 'dummy' set but not used [-Wunused-but-set-variable]
  754 |  u32 dummy;
      |      ^~~~~

This variable is not used in function mvneta_mib_counters_clear(), so
remove it to avoid build warning.
Signed-off-by: NZhang Changzhong <zhangchangzhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Avoid copying skb_shared_info frags array in mvneta_swbm_build_skb() since
__build_skb_around() does not overwrite it
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Recycle the received page into the page_pool cache if the dma descriptors
arrived in a wrong order

Fixes: ca0e0146 ("net: mvneta: move skb build after descriptors processing")
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The following features are supported:

    - VLAN-aware bridge offloading
    - VLAN-unaware bridge offloading
    - FDB offloading (learning, ageing)
    - Switchport configuration

Currently there are some limitations like:

    - Only 1 VLAN-aware bridge instance supported
    - FDB ageing timeout parameter is set globally per device
Co-developed-by: NSerhiy Boiko <serhiy.boiko@plvision.eu>
Signed-off-by: NSerhiy Boiko <serhiy.boiko@plvision.eu>
Co-developed-by: NSerhiy Pshyk <serhiy.pshyk@plvision.eu>
Signed-off-by: NSerhiy Pshyk <serhiy.pshyk@plvision.eu>
Co-developed-by: NTaras Chornyi <taras.chornyi@plvision.eu>
Signed-off-by: NTaras Chornyi <taras.chornyi@plvision.eu>
Signed-off-by: NVadym Kochan <vadym.kochan@plvision.eu>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The ethtool API provides support for the configuration of the following
features: speed and duplex, auto-negotiation, MDI-x, forward error
correction, port media type. The API also provides information about the
port status, hardware and software statistic. The following limitation
exists:

    - port media type should be configured before speed setting
    - ethtool -m option is not supported
    - ethtool -p option is not supported
    - ethtool -r option is supported for RJ45 port only
    - the following combination of parameters is not supported:

          ethtool -s sw1pX port XX autoneg on

    - forward error correction feature is supported only on SFP ports, 10G
      speed

    - auto-negotiation and MDI-x features are not supported on
      Copper-to-Fiber SFP module
Co-developed-by: NAndrii Savka <andrii.savka@plvision.eu>
Signed-off-by: NAndrii Savka <andrii.savka@plvision.eu>
Co-developed-by: NSerhiy Boiko <serhiy.boiko@plvision.eu>
Signed-off-by: NSerhiy Boiko <serhiy.boiko@plvision.eu>
Signed-off-by: NVadym Kochan <vadym.kochan@plvision.eu>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add very basic support for devlink interface:

    - driver name
    - fw version
    - devlink ports
Signed-off-by: NVadym Kochan <vadym.kochan@plvision.eu>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add PCI interface driver for Prestera Switch ASICs family devices, which
provides:

    - Firmware loading mechanism
    - Requests & events handling to/from the firmware
    - Access to the firmware on the bus level

The firmware has to be loaded each time the device is reset. The driver
is loading it from:

    /lib/firmware/mrvl/prestera/mvsw_prestera_fw-v{MAJOR}.{MINOR}.img

The full firmware image version is located within the internal header
and consists of 3 numbers - MAJOR.MINOR.PATCH. Additionally, driver has
hard-coded minimum supported firmware version which it can work with:

    MAJOR - reflects the support on ABI level between driver and loaded
            firmware, this number should be the same for driver and loaded
            firmware.

    MINOR - this is the minimum supported version between driver and the
            firmware.

    PATCH - indicates only fixes, firmware ABI is not changed.

Firmware image file name contains only MAJOR and MINOR numbers to make
driver be compatible with any PATCH version.
Co-developed-by: NOleksandr Mazur <oleksandr.mazur@plvision.eu>
Signed-off-by: NOleksandr Mazur <oleksandr.mazur@plvision.eu>
Signed-off-by: NVadym Kochan <vadym.kochan@plvision.eu>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Marvell Prestera 98DX326x integrates up to 24 ports of 1GbE with 8
ports of 10GbE uplinks or 2 ports of 40Gbps stacking for a largely
wireless SMB deployment.

The current implementation supports only boards designed for the Marvell
Switchdev solution and requires special firmware.

The core Prestera switching logic is implemented in prestera_main.c,
there is an intermediate hw layer between core logic and firmware. It is
implemented in prestera_hw.c, the purpose of it is to encapsulate hw
related logic, in future there is a plan to support more devices with
different HW related configurations.

This patch contains only basic switch initialization and RX/TX support
over SDMA mechanism.

Currently supported devices have DMA access range <= 32bit and require
ZONE_DMA to be enabled, for such cases SDMA driver checks if the skb
allocated in proper range supported by the Prestera device.

Also meanwhile there is no TX interrupt support in current firmware
version so recycling work is scheduled on each xmit.

Port's mac address is generated from the switch base mac which may be
provided via device-tree (static one or as nvme cell), or randomly
generated. This is required by the firmware.
Co-developed-by: NAndrii Savka <andrii.savka@plvision.eu>
Signed-off-by: NAndrii Savka <andrii.savka@plvision.eu>
Co-developed-by: NOleksandr Mazur <oleksandr.mazur@plvision.eu>
Signed-off-by: NOleksandr Mazur <oleksandr.mazur@plvision.eu>
Co-developed-by: NSerhiy Boiko <serhiy.boiko@plvision.eu>
Signed-off-by: NSerhiy Boiko <serhiy.boiko@plvision.eu>
Co-developed-by: NSerhiy Pshyk <serhiy.pshyk@plvision.eu>
Signed-off-by: NSerhiy Pshyk <serhiy.pshyk@plvision.eu>
Co-developed-by: NTaras Chornyi <taras.chornyi@plvision.eu>
Signed-off-by: NTaras Chornyi <taras.chornyi@plvision.eu>
Co-developed-by: NVolodymyr Mytnyk <volodymyr.mytnyk@plvision.eu>
Signed-off-by: NVolodymyr Mytnyk <volodymyr.mytnyk@plvision.eu>
Signed-off-by: NVadym Kochan <vadym.kochan@plvision.eu>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

drivers/net/ethernet/marvell/pxa168_eth.c:1190:6: warning:
 variable 'retval' set but not used [-Wunused-but-set-variable]
 1190 |  int retval;
      |      ^~~~~~

Function pxa168_eth_change_mtu() always return zero, so variable 'retval'
is redundant, just remove it.
Reported-by: NHulk Robot <hulkci@huawei.com>
Signed-off-by: NZhang Changzhong <zhangchangzhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In preparation for unconditionally passing the
struct tasklet_struct pointer to all tasklet
callbacks, switch to using the new tasklet_setup()
and from_tasklet() to pass the tasklet pointer explicitly.
Signed-off-by: NRomain Perier <romain.perier@gmail.com>
Signed-off-by: NAllen Pais <apais@linux.microsoft.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Richard Cochran points out that SKBTX_IN_PROGRESS should be set when
the skbuff is queued for timestamping.  Add this.
Signed-off-by: NRussell King <rmk+kernel@armlinux.org.uk>
Acked-by: NRichard Cochran <richardcochran@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

These are never modified, so constify them to allow the compiler to
place them in read-only memory. This moves about 25kB to read-only
memory as seen by the output of the size command.

Before:
   text    data     bss     dec     hex filename
 296203   65464    1248  362915   589a3 drivers/net/ethernet/marvell/octeontx2/af/octeontx2_af.ko

After:
   text    data     bss     dec     hex filename
 321003   40664    1248  362915   589a3 drivers/net/ethernet/marvell/octeontx2/af/octeontx2_af.ko
Signed-off-by: NRikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In the functions mvpp2_isr_handle_xlg() and
mvpp2_isr_handle_gmac_internal(), the bool variable link is assigned a
true value in the case that a given bit of val is set. However, if the
bit is unset, no value is assigned to link and it is then passed to
mvpp2_isr_handle_link() without being initialised. Fix by assigning to
link the value of the bit test.

Build-tested on x86.

Fixes: 36cfd3a6 ("net: mvpp2: restructure "link status" interrupt handling")
Signed-off-by: NAlex Dewar <alex.dewar90@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Release first buffer as last one since it contains references
to subsequent fragments. This code will be optimized introducing
multi-buffer bit in xdp_buff structure.

Fixes: ca0e0146 ("net: mvneta: move skb build after descriptors processing")
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Acked-by: NJesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Remove mvneta_stats from mvneta_swbm_rx_frame signature since now stats
are accounted in mvneta_run_xdp routine
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In order to easily change the rx buffer size, rely on
MVNETA_MAX_RX_BUF_SIZE instead of PAGE_SIZE in mvneta_swbm_rx_frame
routine for rx buffer split. Currently this is not an issue since we set
MVNETA_MAX_RX_BUF_SIZE to PAGE_SIZE - MVNETA_SKB_PAD but it is a good to
have to configure a different rx buffer size.
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add support for timestamping transmit packets.  We allocate SYNC
messages to queue 1, every other message to queue 0.
Signed-off-by: NRussell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>