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Add missing of_match_table to allow device tree probing.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Shannon Nelson says:
====================
ionic Tx updates
Just as the Rx path recently got a face lift, it is time for the Tx path to
get some attention. The original TSO-to-descriptor mapping was ugly and
convoluted and needed some deep work. This series pulls the dma mapping
out of the descriptor frag mapping loop and makes the dma mapping more
generic for use in the non-TSO case.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Gather the Tx packet and byte counts and call
netdev_tx_completed_queue() only once per clean cycle.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
The descriptor mappings are set up the same way whether
or not it is a TSO, so we don't need separate logic for
the two cases.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
Make the new ionic_tx_map_tso() usable by the non-TSO paths,
and pull the call up a level into ionic_tx() before calling
the csum or no-csum routines.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
One issue with the original TSO code was that it was working too
hard to deal with skb layouts that were never going to show up,
such as an skb->data that was longer than a single descriptor's
length. The other issue was trying to arrange the fragment dma
mapping at the same time as figuring out the descriptors needed.
There was just too much going on at the same time.
Now we do the dma mapping first, which sets up the buffers with
skb->data in buf[0] and the remaining frags in buf[1..n-1].
Next we spread the bufs across the descriptors needed, where
each descriptor gets up to mss number of bytes.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alex Elder says:
====================
net: qualcomm: rmnet: stop using C bit-fields
Version 6 is the same as version 5, but has been rebased on updated
net-next/master. With any luck, the patches I'm sending out this
time won't contain garbage.
Version 5 of this series responds to a suggestion made by Alexander
Duyck, to determine the offset to the checksummed range of a packet
using skb_network_header_len() on patch 2. I have added his
Reviewed-by tag to all (other) patches, and removed Bjorn's from
patch 2.
The change required some updates to the subsequent patches, and I
reordered some assignments in a minor way in the last patch.
I don't expect any more discussion on this series (but will respond
if there is any). So at this point I would really appreciate it
if KS and/or Sean would offer a review, or at least acknowledge it.
I presume you two are able to independently test the code as well,
so I request that, and hope you are willing to do so.
Version 4 of this series is here:
https://lore.kernel.org/netdev/20210315133455.1576188-1-elder@linaro.org
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Replace the use of C bit-fields in the rmnet_map_ul_csum_header
structure with a single two-byte (big endian) structure member,
and use masks to encode or get values within it. The content of
these fields can be accessed using simple bitwise AND and OR
operations on the (host byte order) value of the new structure
member.
Previously rmnet_map_ipv4_ul_csum_header() would update C bit-field
values in host byte order, then forcibly fix their byte order using
a combination of byte swap operations and types.
Instead, just compute the value that needs to go into the new
structure member and save it with a simple byte-order conversion.
Make similar simplifications in rmnet_map_ipv6_ul_csum_header().
Finally, in rmnet_map_checksum_uplink_packet() a set of assignments
zeroes every field in the upload checksum header. Replace that with
a single memset() operation.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Replace the use of C bit-fields in the rmnet_map_dl_csum_trailer
structure with a single one-byte field, using constant field masks
to encode or get at embedded values.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The actual layout of bits defined in C bit-fields (e.g. int foo : 3)
is implementation-defined. Structures defined in <linux/if_rmnet.h>
address this by specifying all bit-fields twice, to cover two
possible layouts.
I think this pattern is repetitive and noisy, and I find the whole
notion of compiler "bitfield endianness" to be non-intuitive.
Stop using C bit-fields for the command/data flag and the pad length
fields in the rmnet_map structure, and define a single-byte flags
field instead. Define a mask for the single-bit "command" flag,
and another mask for the encoded pad length. The content of both
fields can be accessed using a simple bitwise AND operation.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The following macros, defined in "rmnet_map.h", assume a socket
buffer is provided as an argument without any real indication this
is the case.
RMNET_MAP_GET_MUX_ID()
RMNET_MAP_GET_CD_BIT()
RMNET_MAP_GET_PAD()
RMNET_MAP_GET_CMD_START()
RMNET_MAP_GET_LENGTH()
What they hide is pretty trivial accessing of fields in a structure,
and it's much clearer to see this if we do these accesses directly.
So rather than using these accessor macros, assign a local
variable of the map header pointer type to the socket buffer data
pointer, and derereference that pointer variable.
In "rmnet_map_data.c", use sizeof(object) rather than sizeof(type)
in one spot. Also, there's no need to byte swap 0; it's all zeros
irrespective of endianness.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In rmnet_map_ipv4_ul_csum_header() and rmnet_map_ipv6_ul_csum_header()
the offset within a packet at which checksumming should commence is
calculated. This calculation involves byte swapping and a forced type
conversion that makes it hard to understand.
Simplify this by computing the offset in host byte order, then
converting the result when assigning it into the header field.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The fields in the checksum trailer structure used for QMAP protocol
RX packets are all big-endian format, so define them that way.
It turns out these fields are never actually used by the RMNet code.
The start offset is always assumed to be zero, and the length is
taken from the other packet headers. So making these fields
explicitly big endian has no effect on the behavior of the code.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In review, Alexander Duyck suggested that ipa_table_hash_support()
was trivial enough that it could be implemented as a static inline
function in the header file. But the patch had already been
accepted. Implement his suggestion.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add basic support for the Marvell 88X2222 multi-speed ethernet
transceiver.
This PHY provides data transmission over fiber-optic as well as Twinax
copper links. The 88X2222 supports 2 ports of 10GBase-R and 1000Base-X
on the line-side interface. The host-side interface supports 4 ports of
10GBase-R, RXAUI, 1000Base-X and 2 ports of XAUI.
This driver, however, supports only XAUI on the host-side and
1000Base-X/10GBase-R on the line-side, for now. The SGMII is also
supported over 1000Base-X. Interrupts are not supported.
Internal registers access compliant with the Clause 45 specification.
Signed-off-by: Ivan Bornyakov <i.bornyakov@metrotek.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
Joakim Zhang says:
====================
net: stmmac: implement clocks management
This patch set tries to implement clocks management, and takes i.MX platform as an example.
---
ChangeLogs:
V1->V2:
* change to pm runtime mechanism.
* rename function: _enable() -> _config()
* take MDIO bus into account, it needs clocks when interface
is closed.
* reverse Christmass tree.
V2->V3:
* slightly simple the code according to Andrew's suggesstion
and also add tag: Reviewed-by: Andrew Lunn <andrew@lunn.ch>
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Split clocks settings from init callback into clks_config callback,
which could support platform level clocks management.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch intends to add platform level clocks management. Some
platforms may have their own special clocks, they also need to be
managed dynamically. If you want to manage such clocks, please implement
clks_config callback.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch intends to add clocks management for stmmac driver:
If CONFIG_PM enabled:
1. Keep clocks disabled after driver probed.
2. Enable clocks when up the net device, and disable clocks when down
the net device.
If CONFIG_PM disabled:
Keep clocks always enabled after driver probed.
Note:
1. It is fine for ethtool, since the way of implementing ethtool_ops::begin
in stmmac is only can be accessed when interface is enabled, so the clocks
are ticked.
2. The MDIO bus has a different life cycle to the MAC, need ensure
clocks are enabled when _mdio_read/write() need clocks, because these
functions can be called while the interface it not opened.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ong Boon Leong says:
====================
net: pcs, stmmac: add C37 AN SGMII support
This patch series adds MAC-side SGMII support to stmmac driver and it is
changed as follow:-
1/6: Refactor the current C73 implementation in pcs-xpcs to prepare for
adding C37 AN later.
2/6: Add MAC-side SGMII C37 AN support to pcs-xpcs
3,4/6: make phylink_parse_mode() to work for non-DT platform so that
we can use stmmac platform_data to set it.
5/6: Make stmmac_open() to only skip PHY init if C73 is used, otherwise
C37 AN will need phydev to be connected to phylink.
6/6: Finally, add pcs-xpcs SGMII interface support to Intel mGbE
controller.
The patch series have been tested on EHL CRB PCH TSN (eth2) controller
that has Marvell 88E1512 PHY attached over SGMII interface and the
iterative tests of speed change (AN) + ping test have been successful.
[63446.009295] intel-eth-pci 0000:00:1e.4 eth2: Link is Down
[63449.986365] intel-eth-pci 0000:00:1e.4 eth2: Link is Up - 1Gbps/Full - flow control off
[63449.987625] IPv6: ADDRCONF(NETDEV_CHANGE): eth2: link becomes ready
[63451.248064] intel-eth-pci 0000:00:1e.4 eth2: Link is Down
[63454.082366] intel-eth-pci 0000:00:1e.4 eth2: Link is Up - 100Mbps/Full - flow control off
[63454.083650] IPv6: ADDRCONF(NETDEV_CHANGE): eth2: link becomes ready
[63456.465179] intel-eth-pci 0000:00:1e.4 eth2: Link is Down
[63459.202367] intel-eth-pci 0000:00:1e.4 eth2: Link is Up - 10Mbps/Full - flow control off
[63459.203639] IPv6: ADDRCONF(NETDEV_CHANGE): eth2: link becomes ready
[63460.882832] intel-eth-pci 0000:00:1e.4 eth2: Link is Down
[63464.322366] intel-eth-pci 0000:00:1e.4 eth2: Link is Up - 1Gbps/Full - flow control off
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Intel mGbE controller such as those in EHL & TGL uses pcs-xpcs driver for
SGMII interface. To ensure mdio bus scanning does not assign phy_device
to MDIO-addressable entities like intel serdes and pcs-xpcs, we set up
to phy_mask to skip them.
Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
As the support for MAC-side SGMII C37 AN is added to pcs-xpcs, phydev
should be attached to phylink during driver's open(). So, we change the
condition to "Not C73 AN" instead.
Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Not all platform uses DT, so phylink_parse_mode() will skip in-band setup
of pl->supported and pl->link_config.advertising entirely. So, we add the
setting of ovr_an_inband flag to make it works for non-DT platform.
Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Certain platform does not support DT, so we make phylink_parse_mode() to
allow non-DT platform to use it to setup in-band AN advertising.
Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
XPCS IP supports C37 SGMII AN process and it is used in intel multi-GbE
controller as MAC-side SGMII.
Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The current implementation for XPCS is validated for C73, so we rename them
to have _c73 suffix and introduce a set of functions to use an_mode flag
to switch between C73 and C37 AN later.
Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
s/structue/structure/
Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
s/structue/structure/
Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mundane typo fix.
Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Shay Agroskin <shayagr@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This file has been effectively empty since 2.3.99-pre3 !
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When the incorrect interface name is stored in the slaves/active_slave
option of the bonding sysfs, the kernel does not record the log that
interface does not exist.
This patch adds a log for -ENODEV error, which will facilitate users to
figure out such issue.
Signed-off-by: Jianlin Lv <Jianlin.Lv@arm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
For wireless devices (e.g. mt76 driver) multiple net_devices belongs to
the same wireless phy and the napi object is registered in a dummy
netdevice related to the wireless phy.
Export dev_set_threaded in order to be reused in device drivers enabling
threaded NAPI.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The switch implements unicast and multicast filtering per port.
Add support for it. By default filtering is disabled.
Signed-off-by: Kurt Kanzenbach <kurt@kmk-computers.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel says:
====================
psample: Add additional metadata attributes
This series extends the psample module to expose additional metadata to
user space for packets sampled via act_sample. The new metadata (e.g.,
transit delay) can then be consumed by applications such as hsflowd [1]
for better network observability.
netdevsim is extended with a dummy psample implementation that
periodically reports "sampled" packets to the psample module. In
addition to testing of the psample module, it enables the development
and demonstration of user space applications (e.g., hsflowd) that are
interested in the new metadata even without access to specialized
hardware (e.g., Spectrum ASIC) that can provide it.
mlxsw is also extended to provide the new metadata to psample.
A Wireshark dissector for psample netlink packets [2] will be submitted
upstream after the kernel patches are accepted. In addition, a libpcap
capture module for psample is currently in the works. Eventually, users
should be able to run:
# tshark -i psample
In order to consume sampled packets along with their metadata.
Series overview:
Patch #1 makes it easier to extend the metadata provided to psample
Patch #2 adds the new metadata attributes to psample
Patch #3 extends netdevsim to periodically report "sampled" packets to
psample. Various debugfs knobs are added to control the reporting
Patch #4 adds a selftest over netdevsim
Patches #5-#10 gradually add support for the new metadata in mlxsw
Patch #11 adds a selftest over mlxsw
[1] https://sflow.org/draft4_sflow_transit.txt
[2] 3d71114302
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Test that packets are sampled when tc-sample is used and that reported
metadata is correct. Two sets of hosts (with and without LAG) are used,
since metadata extraction in mlxsw is a bit different when LAG is
involved.
# ./tc_sample.sh
TEST: tc sample rate (forward) [ OK ]
TEST: tc sample rate (local receive) [ OK ]
TEST: tc sample maximum rate [ OK ]
TEST: tc sample group conflict test [ OK ]
TEST: tc sample iif [ OK ]
TEST: tc sample lag iif [ OK ]
TEST: tc sample oif [ OK ]
TEST: tc sample lag oif [ OK ]
TEST: tc sample out-tc [ OK ]
TEST: tc sample out-tc-occ [ OK ]
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Make use of the previously added metadata and report it to the psample
module. The metadata is read from the skb's control block, which was
initialized by the bus driver (i.e., 'mlxsw_pci') after decoding the
packet's Completion Queue Element (CQE).
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The function resolves the psample sampling group from the Rx port
because this is the only form of sampling the driver currently supports.
Subsequent patches are going to add support for Tx-based and
policy-based sampling, in which case the sampling group would not be
resolved from the Rx port.
Therefore, move this code to the Rx-specific sampling listener.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Since commit 7d8e8f3433dc ("mlxsw: core: Increase scope of RCU read-side
critical section"), all Rx handlers are called from an RCU read-side
critical section.
Remove the unnecessary rcu_read_lock() / rcu_read_unlock().
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Packets that are mirrored / sampled to the CPU have extra metadata
encoded in their corresponding Completion Queue Element (CQE). Retrieve
this metadata from the CQE and set it in the skb control block so that
it could be accessed by the switch driver (i.e., 'mlxsw_spectrum').
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Next patch will need to encode more Rx metadata in the skb control
block, so create a dedicated field for it and move the cookie index
there.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The Completion Queue Element version 2 (CQEv2) includes various metadata
fields for packets that are mirrored / sampled to the CPU.
Add these fields so that they could be used by a later patch.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Test various aspects of psample functionality over netdevsim and in
particular test that the psample module correctly reports the provided
metadata.
Example:
# ./psample.sh
TEST: psample enable / disable [ OK ]
TEST: psample group number [ OK ]
TEST: psample metadata [ OK ]
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Allow netdevsim to report "sampled" packets to the psample module by
periodically generating packets from a work queue. The behavior can be
enabled / disabled (default) and the various meta data attributes can be
controlled via debugfs knobs.
This implementation enables both testing of the psample module with all
the optional attributes as well as development of user space
applications on top of psample such as hsflowd and a Wireshark dissector
for psample generic netlink packets.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Extend psample to report the following attributes when available:
* Output traffic class as a 16-bit value
* Output traffic class occupancy in bytes as a 64-bit value
* End-to-end latency of the packet in nanoseconds resolution
* Software timestamp in nanoseconds resolution (always available)
* Packet's protocol. Needed for packet dissection in user space (always
available)
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently, callers of psample_sample_packet() pass three metadata
attributes: Ingress port, egress port and truncated size. Subsequent
patches are going to add more attributes (e.g., egress queue occupancy),
which also need an indication whether they are valid or not.
Encapsulate packet metadata in a struct in order to keep the number of
arguments reasonable.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Lobakin says:
====================
skbuff: micro-optimize flow dissection
This little number makes all of the flow dissection functions take
raw input data pointer as const (1-5) and shuffles the branches in
__skb_header_pointer() according to their hit probability.
The result is +20 Mbps per flow/core with one Flow Dissector pass
per packet. This affects RPS (with software hashing), drivers that
use eth_get_headlen() on their Rx path and so on.
From v2 [1]:
- reword some commit messages as a potential fix for NIPA;
- no functional changes.
From v1 [0]:
- rebase on top of the latest net-next. This was super-weird, but
I double-checked that the series applies with no conflicts, and
then on Patchwork it didn't;
- no other changes.
[0] https://lore.kernel.org/netdev/20210312194538.337504-1-alobakin@pm.me
[1] https://lore.kernel.org/netdev/20210313113645.5949-1-alobakin@pm.me
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
{,__}skb_header_pointer() helpers exist mainly for preventing
accesses-beyond-end of the linear data.
In the vast majorify of cases, they bail out on the first condition.
All code going after is mostly a fallback.
Mark the most common branch as 'likely' one to move it in-line.
Also, skb_copy_bits() can return negative values only when the input
arguments are invalid, e.g. offset is greater than skb->len. It can
be safely marked as 'unlikely' branch, assuming that hotpath code
provides sane input to not fail here.
These two bump the throughput with a single Flow Dissector pass on
every packet (e.g. with RPS or driver that uses eth_get_headlen())
on 20 Mbps per flow/core.
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Signed-off-by: David S. Miller <davem@davemloft.net>
It's used only for flow dissection, which now takes constant data
pointers.
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Signed-off-by: David S. Miller <davem@davemloft.net>
Caught by the text editor. Fix it separately from the actual changes.
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Signed-off-by: David S. Miller <davem@davemloft.net>
