Convert storm ram line to regpair rather than two distinct u32
to better represent the u64 width of the ram.
Convert some defines to be hex instead of negative values
these values also changed by FW from previous value.
Signed-off-by: Ariel Elior <ariel.elior@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch contains changes in initialization and usage of the QM blocks.
Instead of setting a rate limiter per vport the rate limiters are now a
global resource and set independentaly.
The patch also contains a field name change:
vport_wfq which is part of vport_params was renamed to wfq as the vport
prefix is redundant.
Signed-off-by: Ariel Elior <ariel.elior@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch contains register initialization related changes.
- Modifications to the runtime offsets - these are defines used
by the driver or firmware functions to set values that are used
by the initialization functions to set device register values.
- Global window values changes to provide different device register
ranges.
- Additional device registers addresses were added to the register file,
used in later stages.
Signed-off-by: Ariel Elior <ariel.elior@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
IRO stands for internal RAM offsets. Updating the FW binary produces
different iro offsets. This file contains the different values,
and a new representation of the values.
Update the FW version
Signed-off-by: Ariel Elior <ariel.elior@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sunil Goutham says:
====================
octeontx2-pf: Add network driver for physical function
OcteonTX2 SOC's resource virtualization unit (RVU) supports
multiple physical and virtual functions. Each of the PF's
functionality is determined by what kind of resources are attached
to it. If NPA and NIX blocks are attached to a PF it can function
as a highly capable network device.
This patch series add a network driver for the PF. Initial set of
patches adds mailbox communication with admin function (RVU AF)
and configuration of queues. Followed by Rx and tx pkts NAPI
handler and then support for HW offloads like RSS, TSO, Rxhash etc.
Ethtool support to extract stats, config RSS, queue sizes, queue
count is also added.
Added documentation to give a high level overview of HW and
different drivers which will be upstreamed and how they interact.
Changes from v5:
* Fixed otx2_atomic64_add() non ARM64 fallback definition.
- Suggested by David Miller
Changes from v4:
* Replaced pci_set_dma_mask and pci_set_consistent_dma_mask
fn()s with dma_set_mask_and_coherent().
* Some additonal code cleanup.
* Fixed receive buffer segmnetation logic in otx2_alloc_rbuf()
* Removed all unused BIG_ENDIAN structure definitions.
* Removed unnecessary memory barriers
- Sugested by Jakub Kicinski
* Fixed mailbox initalization failure handling
* Removed unused function parameter in otx2_skb_add_frag()
- Suggested by Maciej Fijalkowski
Changes from v3:
* Fixed receive side scaling reinitialization during interface
DOWN and UP to retain user configured settings, if any.
* Removed driver version from ethtool.
* Fixed otx2_set_rss_hash_opts() to return error incase RSS is
not enabled.
- Sugested by Jakub Kicinski
Changes from v2:
* Removed frames, bytes, dropped packet stats from ethtool to avoid
duplication of same stats in netlink and ethtool.
- Sugested by Jakub Kicinski
* Removed number of channels and ringparam upper bound checking
in ethtool support.
* Fixed RSS hash option setting to reject unsupported config.
- Suggested by Michal Kubecek
Changes from v1:
* Made driver dependent on 64bit, to fix build errors related to
non availability of writeq/readq APIs for 32bit platforms.
- Reported by kbuild test robot
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Added maintainers entry for Marvell OcteonTX2 SOC's physical
function NIC driver.
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Added high level overview of OcteonTx2 RVU HW and functionality of
various drivers which will be upstreamed.
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Added support to show or configure RSS hash key, indirection table,
2,4 tuple via ethtool. Also added debug msg_level support
to dump messages when HW reports errors in packet received
or transmitted.
Signed-off-by: Prakash Brahmajyosyula <bprakash@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds ethtool support for
- Driver stats, Tx/Rx perqueue and CGX LMAC stats
- Set/show Rx/Tx queue count
- Set/show Rx/Tx ring sizes
- Set/show IRQ coalescing parameters
Signed-off-by: Christina Jacob <cjacob@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Added ndo_get_stats64 which returns stats maintained by HW.
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Adds TCP segmentation offload (TSO) support. First version
of the silicon didn't support TSO offload, for this driver
level TSO support is added.
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Adds receive side scaling (RSS) support to distribute
pkts/flows across multiple queues. Sets up key, indirection
table etc. Also added extraction of HW calculated rxhash and
adding to same to SKB ie NETIF_F_RXHASH offload support.
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
HW reports many errors on the receive and transmit paths.
Such as incorrect queue configuration, pkt transmission errors,
LMTST instruction errors, transmit queue full etc. These are reported
via QINT interrupt. Most of the errors are fatal and needs
reinitialization.
Also added support to allocate receive buffers in non-atomic context
when allocation fails in NAPI context.
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Aleksey Makarov <amakarov@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch addes support to change interface MTU, MAC address
retrieval and config, RX mode ie unicast, multicast and promiscuous.
Also added link loopback support
Signed-off-by: Tomasz Duszynski <tduszynski@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
PF and AF (admin function) shares 64KB of reserved memory region for
communication. This region is shared for
- Messages sent by PF and responses sent by AF.
- Notifications sent by AF and ACKs sent by PF.
This patch adds infrastructure to handle notifications sent
by AF and adds handlers to process them.
One of the main usecase of notifications from AF is physical
link changes. So this patch adds registration of PF with AF
to receive link status change notifications and also adds
the handler for that notification.
Signed-off-by: Linu Cherian <lcherian@marvell.com>
Signed-off-by: Tomasz Duszynski <tduszynski@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds the packet transmission support.
For a given skb prepares send queue descriptors (SQEs) and pushes them
to HW. Here driver doesn't maintain it's own SQ rings, SQEs are pushed
to HW using a silicon specific operations called LMTST. From the
instuction HW derives the transmit queue number and queues the SQE to
that queue. These LMTST instructions are designed to avoid queue
maintenance in SW and lockless behavior ie when multiple cores are trying
to add SQEs to same queue then HW will takecare of serialization, no need
for SW to hold locks.
Also supports scatter/gather.
Co-developed-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Added receive packet handling (NAPI) support, error stats, RX_ALL
capability config option to passon error pkts to stack upon user request.
In subsequent patches these error stats will be added to ethttool.
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Completion queue (CQ) is the one with which HW notifies SW on a packet
reception or transmission. Each of the RQ and SQ are mapped to a unique
CQ and again both CQs are mapped to same interrupt ie the CINT. So that
each core has one interrupt source in whose handler both Rx and Tx
notifications are processed.
Also
- Registered a NAPI handler for the CINT.
- Setup coalescing parameters.
- IRQ affinity hints etc
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch does the initialization of all queues ie the
receive buffer pools, receive and transmit queues, completion
or notification queues etc. Allocates all required resources
(eg transmit schedulers, receive buffers etc) and configures
them for proper functioning of queues. Also sets up receive
queue's RED dropping levels.
Co-developed-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
For a PF to function as a NIC, NPA (for Rx buffers, Tx descriptors etc)
and NIX (for rcv, send and completion queues) are the minimum resources
needed. So request admin function (AF) to attach one each of NIX and NPA
block LFs (local functions).
Only AF can configure a LF's contexts, so request AF to allocate memory
for NPA aura/pool and NIX RQ/SQ/CQ HW contexts. Upon receiving response,
save some of the HW constants like number of pointers per stack page,
size of send queue buffer (SQBs, where SQEs are queued by HW) e.t.c which
are later used to initialize queues.
A HW context here is like a state machine maintained for a descriptor
queue. eg size, head/tail pointers, irq etc etc. HW maintains this in
memory.
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In the resource virtualization unit (RVU) each of the PF and AF
(admin function) share a 64KB of reserved memory region for
communication. This patch initializes PF <=> AF mailbox IRQs,
registers handlers for processing these communication messages.
Also adds support to process these messages in both directions
ie responses to PF initiated DOWN (PF => AF) messages and AF
initiated UP messages (AF => PF).
Mbox communication APIs and message formats are defined in AF driver
(drivers/net/ethernet/marvell/octeontx2/af), mbox.h from AF driver is
included here to avoid duplication.
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Christina Jacob <cjacob@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Aleksey Makarov <amakarov@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds template for the Marvell's OcteonTX2 network
controller's physical function driver. Just the probe, PCI
specific initialization and netdev registration.
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann says:
====================
pull-request: bpf-next 2020-01-27
The following pull-request contains BPF updates for your *net-next* tree.
We've added 20 non-merge commits during the last 5 day(s) which contain
a total of 24 files changed, 433 insertions(+), 104 deletions(-).
The main changes are:
1) Make BPF trampolines and dispatcher aware for the stack unwinder, from Jiri Olsa.
2) Improve handling of failed CO-RE relocations in libbpf, from Andrii Nakryiko.
3) Several fixes to BPF sockmap and reuseport selftests, from Lorenz Bauer.
4) Various cleanups in BPF devmap's XDP flush code, from John Fastabend.
5) Fix BPF flow dissector when used with port ranges, from Yoshiki Komachi.
6) Fix bpffs' map_seq_next callback to always inc position index, from Vasily Averin.
7) Allow overriding LLVM tooling for runqslower utility, from Andrey Ignatov.
8) Silence false-positive lockdep splats in devmap hash lookup, from Amol Grover.
9) Fix fentry/fexit selftests to initialize a variable before use, from John Sperbeck.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This reverts commit 7786a1af2a.
It causes build failures on 32-bit, for example:
net/core/pktgen.o: In function `mod_cur_headers':
>> pktgen.c:(.text.mod_cur_headers+0xba0): undefined reference to `__umoddi3'
Signed-off-by: David S. Miller <davem@davemloft.net>
In order to stop useless driver version bumps and unify output
presented by ethtool -i, let's set default version string.
As Linus said in [1]: "Things are supposed to be backwards and
forwards compatible, because we don't accept breakage in user
space anyway. So versioning is pointless, and only causes
problems."
They cause problems when users start to see version changes
and expect specific set of features which will be different
for stable@, vanilla and distribution kernels.
Distribution kernels are based on some kernel version with extra
patches on top, for example, in RedHat world this "extra" is a lot
and for them your driver version say nothing. Users who run vanilla
kernels won't use driver version information too, because running
such kernels requires knowledge and understanding.
Another set of problems are related to difference in versioning scheme
and such doesn't allow to write meaningful automation which will work
sanely on all ethtool capable devices.
Before this change:
[leonro@erver ~]$ ethtool -i eth0
driver: virtio_net
version: 1.0.0
After this change and once ->version assignment will be deleted
from virtio_net:
[leonro@server ~]$ ethtool -i eth0
driver: virtio_net
version: 5.5.0-rc6+
Link: https://lore.kernel.org/ksummit-discuss/CA+55aFx9A=5cc0QZ7CySC4F2K7eYaEfzkdYEc9JaNgCcV25=rg@mail.gmail.com/
Link: https://lore.kernel.org/linux-rdma/20200122152627.14903-1-michal.kalderon@marvell.com/T/#md460ff8f976c532a89d6860411c3c50bb811038b
Link: https://lore.kernel.org/linux-rdma/20200127060835.GA570@unicorn.suse.cz
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Acked-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alex Maftei says:
====================
sfc: refactor mcdi filtering code
Splitting final bits of the driver code into different files, which
will later be used in another driver for a new product.
This is a continuation to my previous patch series. (three of them)
Refactoring will be concluded with this series, for now.
As instructed, split the renaming and moving into different patches.
Removed stray spaces before tabs... twice.
Minor refactoring was done with the renaming, as explained in the
first patch.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Moved structs, enums, and added function prototypes.
The affected functions are no longer static.
Signed-off-by: Alexandru-Mihai Maftei <amaftei@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Minor style fixes included due to name lengths changing.
Signed-off-by: Alexandru-Mihai Maftei <amaftei@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Chan says:
====================
bnxt_en: Updates for net-next.
This patch-set includes link up and link initialization improvements,
RSS and aRFS improvements, devlink refactoring and registration
improvements, devlink info support including documentation.
v2: Removed the TC ingress rate limiting patch. The developer Harsha needs
to rework some code.
Use fw.psid suggested by Jakub Kicinski.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Add the set of info versions reported by bnxt_en driver, including
a description of what the version represents, and what modes (fixed,
running, stored) it reports.
v2: Use fw.psid.
Cc: Jiri Pirko <jiri@mellanox.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Display the following information via devlink info command:
- Driver name
- Board id
- Broad revision
- Board Serial number
- Board FW version
- FW parameter set version
- FW App version
- FW management version
- FW RoCE version
Standard output example:
$ devlink dev info pci/0000:3b:00.0
pci/0000:3b:00.0:
driver bnxt_en
serial_number 00-10-18-FF-FE-AD-05-00
versions:
fixed:
asic.id D802
asic.rev 1
running:
fw 216.1.124.0
fw.psid 0.0.0
fw.app 216.1.122.0
fw.mgmt 864.0.32.0
fw.roce 216.1.15.0
[ This version has incorporated changes suggested by Jakub Kicinski to
use generic devlink version tags. ]
v2: Use fw.psid
Cc: Jiri Pirko <jiri@mellanox.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add definition and documentation for the new generic info "fw.roce".
v2: Remove board.nvm_cfg since fw.psid is similar.
Cc: Jiri Pirko <jiri@mellanox.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Instead of switch_id, renaming it to dsn will be more meaningful
so that it can be used to display device serial number in follow up
patch via devlink_info command.
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds status notification to devlink flash update
while flashing is in progress.
$ devlink dev flash pci/0000:05:00.0 file 103.pkg
Preparing to flash
Flashing done
Cc: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Latest kernels get the phys_port_name via devlink, if
ndo_get_phys_port_name is not defined. To provide the phys_port_name
correctly, register devlink before registering netdev.
Also call devlink_port_type_eth_set() after registering netdev as
devlink port updates the netdev structure and notifies user.
Cc: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This will allow to register for devlink port and use port features.
Also register params only if firmware spec version is at least 0x10600
which will support reading/setting numbered variables in NVRAM.
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Define bnxt_dl_params_register() and bnxt_dl_params_unregister()
functions and move params register/unregister code to these newly
defined functions. This patch is in preparation to register
devlink irrespective of firmware spec. version in the next patch.
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The hardware bug has been fixed on B0 and newer chips, so disable the
workaround on these chips.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently the only time we check and remove expired filters is
when we are inserting new filters.
Improving the aRFS expiry handling by adding code to do the above
work periodically.
Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In bnxt_rx_flow_steer(), if the dissected packet is a fragment, do not
proceed to create the ntuple filter and return error instead. Otherwise
we would create a filter with 0 source and destination ports because
the dissected ports would not be available for fragments.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
575XX (P5) chips have the same UDP RSS hashing capability as P4 chips,
so we can enable it on P5 chips.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The dev_port is meant to distinguish the network ports belonging to
the same PCI function. Our devices only have one network port
associated with each PCI function and so we should not set it for
correctness.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If the 2nd parameter fw_dflt is not set, we are calling bnxt_probe_phy()
after the firmware has reset. There is no need to query the current
PHY settings from firmware as these settings may be different from
the ethtool settings that the driver will re-establish later. So
return earlier in bnxt_probe_phy() to save one firmware call.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In bnxt_update_phy_setting(), ethtool_get_link_ksettings() and
bnxt_disable_an_for_lpbk(), we inconsistently use netif_carrier_ok()
to determine link. Instead, we should use bp->link_info.link_up
which has the true link state. The netif_carrier state may be off
during self-test and while the device is being reset and may not always
reflect the true link state.
By always using bp->link_info.link_up, the code is now more
consistent and more correct. Some unnecessary link toggles are
now prevented with this patch.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michal Kubecek says:
====================
ethtool netlink interface, part 2
This shorter series adds support for getting and setting of wake-on-lan
settings and message mask (originally message level). Together with the
code already in net-next, this will allow full implementation of
"ethtool <dev>" and "ethtool -s <dev> ...".
Older versions of the ethtool netlink series allowed getting WoL settings
by unprivileged users and only filtered out the password but this was
a source of controversy so for now, ETHTOOL_MSG_WOL_GET request always
requires CAP_NET_ADMIN as ETHTOOL_GWOL ioctl request does.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Send ETHTOOL_MSG_WOL_NTF notification whenever wake-on-lan settings of
a device are modified using ETHTOOL_MSG_WOL_SET netlink message or
ETHTOOL_SWOL ioctl request.
As notifications can be received by anyone, do not include SecureOn(tm)
password in notification messages.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Implement WOL_SET netlink request to set wake-on-lan settings. This is
equivalent to ETHTOOL_SWOL ioctl request.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Implement WOL_GET request to get wake-on-lan settings for a device,
traditionally available via ETHTOOL_GWOL ioctl request.
As part of the implementation, provide symbolic names for wake-on-line
modes as ETH_SS_WOL_MODES string set.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Send ETHTOOL_MSG_DEBUG_NTF notification message whenever debugging message
mask for a device are modified using ETHTOOL_MSG_DEBUG_SET netlink message
or ETHTOOL_SMSGLVL ioctl request.
The notification message has the same format as reply to DEBUG_GET request.
As with other ethtool notifications, netlink requests only trigger the
notification if the mask is actually changed while ioctl request trigger it
whenever the request results in calling the ethtool_ops handler.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
