octeontx2-pf: Wait till detach_resources msg is complete

[ Upstream commit cbf2f24939a5dafce6de4dd4422e543ce8f610cf ]

During VF driver remove, a message is sent to detach VF
resources to PF but VF

octeontx2-pf: Wait till detach_resources msg is complete

[ Upstream commit cbf2f24939a5dafce6de4dd4422e543ce8f610cf ]

During VF driver remove, a message is sent to detach VF
resources to PF but VF is not waiting until message is
complete. Also mailbox interrupts need to be turned off
after the detach resource message is complete. This patch
fixes that problem.

Fixes: 05fcc9e08955 ("octeontx2-pf: Attach NIX and NPA block LFs")
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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octeontx2: Detect the mbox up or down message via register

[ Upstream commit a88e0f936ba9a301c78f6eacfd38737d003c130b ]

A single line of interrupt is used to receive up notifications
and down reply

octeontx2: Detect the mbox up or down message via register

[ Upstream commit a88e0f936ba9a301c78f6eacfd38737d003c130b ]

A single line of interrupt is used to receive up notifications
and down reply messages from AF to PF (similarly from PF to its VF).
PF acts as bridge and forwards VF messages to AF and sends respsones
back from AF to VF. When an async event like link event is received
by up message when PF is in middle of forwarding VF message then
mailbox errors occur because PF state machine is corrupted.
Since VF is a separate driver or VF driver can be in a VM it is
not possible to serialize from the start of communication at VF.
Hence to differentiate between type of messages at PF this patch makes
sender to set mbox data register with distinct values for up and down
messages. Sender also checks whether previous interrupt is received
before triggering current interrupt by waiting for mailbox data register
to become zero.

Fixes: 5a6d7c9daef3 ("octeontx2-pf: Mailbox communication with AF")
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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octeontx2-pf: Add support for HTB offload

This patch registers callbacks to support HTB offload.

Below are features supported,

- supports traffic shaping on the given class by honoring rate and ce

octeontx2-pf: Add support for HTB offload

This patch registers callbacks to support HTB offload.

Below are features supported,

- supports traffic shaping on the given class by honoring rate and ceil
configuration.

- supports traffic scheduling, which prioritizes different types of
traffic based on strict priority values.

- supports the creation of leaf to inner classes such that parent node
rate limits apply to all child nodes.

Signed-off-by: Naveen Mamindlapalli <naveenm@marvell.com>
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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octeontx2-pf: Refactor schedular queue alloc/free calls

1. Upon txschq free request, the transmit schedular config in hardware
is not getting reset. This patch adds necessary changes to do the same.

octeontx2-pf: Refactor schedular queue alloc/free calls

1. Upon txschq free request, the transmit schedular config in hardware
is not getting reset. This patch adds necessary changes to do the same.

2. Current implementation calls txschq alloc during interface
initialization and in response handler updates the default txschq array.
This creates a problem for htb offload where txsch alloc will be called
for every tc class. This patch addresses the issue by reading txschq
response in mbox caller function instead in the response handler.

3. Current otx2_txschq_stop routine tries to free all txschq nodes
allocated to the interface. This creates a problem for htb offload.
This patch introduces the otx2_txschq_free_one to free txschq in a
given level.

Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Naveen Mamindlapalli <naveenm@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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octeontx2-pf: qos send queues management

Current implementation is such that the number of Send queues (SQs)
are decided on the device probe which is equal to the number of online
cpus. These SQs ar

octeontx2-pf: qos send queues management

Current implementation is such that the number of Send queues (SQs)
are decided on the device probe which is equal to the number of online
cpus. These SQs are allocated and deallocated in interface open and c
lose calls respectively.

This patch defines new APIs for initializing and deinitializing Send
queues dynamically and allocates more number of transmit queues for
QOS feature.

Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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octeontx2-pf: Rename tot_tx_queues to non_qos_queues

current implementation is such that tot_tx_queues contains both
xdp queues and normal tx queues. which will be allocated in interface
open calls

octeontx2-pf: Rename tot_tx_queues to non_qos_queues

current implementation is such that tot_tx_queues contains both
xdp queues and normal tx queues. which will be allocated in interface
open calls and deallocated on interface down calls respectively.

With addition of QOS, where send quees are allocated/deallacated upon
user request Qos send queues won't be part of tot_tx_queues. So this
patch renames tot_tx_queues to non_qos_queues.

Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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net: octeontx2: Use alloc_ordered_workqueue() to create ordered workqueues

BACKGROUND
==========

When multiple work items are queued to a workqueue, their execution order
doesn't match the queueing

net: octeontx2: Use alloc_ordered_workqueue() to create ordered workqueues

BACKGROUND
==========

When multiple work items are queued to a workqueue, their execution order
doesn't match the queueing order. They may get executed in any order and
simultaneously. When fully serialized execution - one by one in the queueing
order - is needed, an ordered workqueue should be used which can be created
with alloc_ordered_workqueue().

However, alloc_ordered_workqueue() was a later addition. Before it, an
ordered workqueue could be obtained by creating an UNBOUND workqueue with
@max_active==1. This originally was an implementation side-effect which was
broken by 4c16bd327c74 ("workqueue: restore WQ_UNBOUND/max_active==1 to be
ordered"). Because there were users that depended on the ordered execution,
5c0338c68706 ("workqueue: restore WQ_UNBOUND/max_active==1 to be ordered")
made workqueue allocation path to implicitly promote UNBOUND workqueues w/
@max_active==1 to ordered workqueues.

While this has worked okay, overloading the UNBOUND allocation interface
this way creates other issues. It's difficult to tell whether a given
workqueue actually needs to be ordered and users that legitimately want a
min concurrency level wq unexpectedly gets an ordered one instead. With
planned UNBOUND workqueue updates to improve execution locality and more
prevalence of chiplet designs which can benefit from such improvements, this
isn't a state we wanna be in forever.

This patch series audits all callsites that create an UNBOUND workqueue w/
@max_active==1 and converts them to alloc_ordered_workqueue() as necessary.

WHAT TO LOOK FOR
================

The conversions are from

alloc_workqueue(WQ_UNBOUND | flags, 1, args..)

to

alloc_ordered_workqueue(flags, args...)

which don't cause any functional changes. If you know that fully ordered
execution is not ncessary, please let me know. I'll drop the conversion and
instead add a comment noting the fact to reduce confusion while conversion
is in progress.

If you aren't fully sure, it's completely fine to let the conversion
through. The behavior will stay exactly the same and we can always
reconsider later.

As there are follow-up workqueue core changes, I'd really appreciate if the
patch can be routed through the workqueue tree w/ your acks. Thanks.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Sunil Goutham <sgoutham@marvell.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Ratheesh Kannoth <rkannoth@marvell.com>
Cc: Srujana Challa <schalla@marvell.com>
Cc: Geetha sowjanya <gakula@marvell.com>
Cc: netdev@vger.kernel.org

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octeontx2-vf: Detach LF resources on probe cleanup

When a VF device probe fails due to error in MSIX vector allocation then
the resources NIX and NPA LFs were not detached. Fix this by detaching
the

octeontx2-vf: Detach LF resources on probe cleanup

When a VF device probe fails due to error in MSIX vector allocation then
the resources NIX and NPA LFs were not detached. Fix this by detaching
the LFs when MSIX vector allocation fails.

Fixes: 3184fb5ba96e ("octeontx2-vf: Virtual function driver support")
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: Sai Krishna <saikrishnag@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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octeontx2-vf: Add missing free for alloc_percpu

Add the free_percpu for the allocated "vf->hw.lmt_info" in order to avoid
memory leak, same as the "pf->hw.lmt_info" in
`drivers/net/ethernet/marvell/

octeontx2-vf: Add missing free for alloc_percpu

Add the free_percpu for the allocated "vf->hw.lmt_info" in order to avoid
memory leak, same as the "pf->hw.lmt_info" in
`drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c`.

Fixes: 5c0512072f65 ("octeontx2-pf: cn10k: Use runtime allocated LMTLINE region")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Acked-by: Geethasowjanya Akula <gakula@marvell.com>
Link: https://lore.kernel.org/r/20230317064337.18198-1-jiasheng@iscas.ac.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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octeontx2-pf: Fix resource leakage in VF driver unbind

resources allocated like mcam entries to support the Ntuple feature
and hash tables for the tc feature are not getting freed in driver
unbind.

octeontx2-pf: Fix resource leakage in VF driver unbind

resources allocated like mcam entries to support the Ntuple feature
and hash tables for the tc feature are not getting freed in driver
unbind. This patch fixes the issue.

Fixes: 2da489432747 ("octeontx2-pf: devlink params support to set mcam entry count")
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Link: https://lore.kernel.org/r/20230109061325.21395-1-hkelam@marvell.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

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net: make drivers set the TSO limit not the GSO limit

Drivers should call the TSO setting helper, GSO is controllable
by user space.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: D

net: make drivers set the TSO limit not the GSO limit

Drivers should call the TSO setting helper, GSO is controllable
by user space.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

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octeontx2-pf: Vary completion queue event size

Completion Queue Entry(CQE) is a descriptor written
by hardware to notify software about the send and
receive completion status. The CQE can be of size

octeontx2-pf: Vary completion queue event size

Completion Queue Entry(CQE) is a descriptor written
by hardware to notify software about the send and
receive completion status. The CQE can be of size
128 or 512 bytes. A 512 bytes CQE can hold more receive
fragments pointers compared to 128 bytes CQE. This
patch enables to modify CQE size using:
<ethtool -G cqe-size N>.

Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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octeontx2-pf: Add TC feature for VFs

This patch adds TC feature for VFs also. When MCAM
rules are allocated for a VF then either TC or ntuple
filters can be used. Below are the commands to use
TC fe

octeontx2-pf: Add TC feature for VFs

This patch adds TC feature for VFs also. When MCAM
rules are allocated for a VF then either TC or ntuple
filters can be used. Below are the commands to use
TC feature for a VF(say lbk0):

devlink dev param set pci/0002:01:00.1 name mcam_count value 16 \
cmode runtime
ethtool -K lbk0 hw-tc-offload on
ifconfig lbk0 up
tc qdisc add dev lbk0 ingress
tc filter add dev lbk0 parent ffff: protocol ip flower skip_sw \
dst_mac 98:03:9b:83:aa:12 action police rate 100Mbit burst 5000

Also to modify any fields of the hardware context with
NIX_AQ_INSTOP_WRITE command then corresponding masks of those
fields must be set as per hardware. This was missing in
ingress ratelimiting context. This patch sets those masks also.

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>

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octeontx2-pf: PFC config support with DCBx

Data centric bridging designed to eliminate packet loss due to
queue overflow by adding enhancements to ethernet network such as
proprity flow control etc.

octeontx2-pf: PFC config support with DCBx

Data centric bridging designed to eliminate packet loss due to
queue overflow by adding enhancements to ethernet network such as
proprity flow control etc. This patch adds support for management
of Priority flow control(PFC) on Octeontx2 and CN10K interfaces.

To enable PFC for all priorities
dcb pfc set dev eth0 prio-pfc all:on/off

To enable PFC on selected priorites
dcb pfc set dev eth0 prio-pfc 0:on/off 1:on/off ..7:on/off

With the ntuple commands user can map Priority to receive queues.
On queue overflow NIX will assert backpressure such that PFC pause frames
are genarated with mapped priority.

To map priority 7 to Queue 1
ethtool -U eth0 flow-type ether dst xx:xx:xx:xx:xx:xx vlan 0xe00a
m 0x1fff queue 1

Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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octeontx2-af: Don't enable Pause frames by default

Current implementation is such that 802.3x pause frames are
enabled by default. As CGX and RPM blocks support PFC
(priority flow control) also, in

octeontx2-af: Don't enable Pause frames by default

Current implementation is such that 802.3x pause frames are
enabled by default. As CGX and RPM blocks support PFC
(priority flow control) also, instead of driver enabling one
between them enable them upon request from PF or its VFs.
Also add support to disable pause frames in driver unbind.

Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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octeontx2-pf: Change receive buffer size using ethtool

ethtool rx-buf-len is for setting receive buffer size,
support setting it via ethtool -G parameter and getting
it via ethtool -g parameter.

Si

octeontx2-pf: Change receive buffer size using ethtool

ethtool rx-buf-len is for setting receive buffer size,
support setting it via ethtool -G parameter and getting
it via ethtool -g parameter.

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>

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octeontx2-nicvf: Free VF PTP resources.

When a VF is removed respective PTP resources are not
being freed currently. This patch fixes it.

Fixes: 43510ef4ddad ("octeontx2-nicvf: Add PTP hardware clo

octeontx2-nicvf: Free VF PTP resources.

When a VF is removed respective PTP resources are not
being freed currently. This patch fixes it.

Fixes: 43510ef4ddad ("octeontx2-nicvf: Add PTP hardware clock support to NIX VF")
Signed-off-by: Rakesh Babu Saladi <rsaladi2@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>

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net: annotate accesses to dev->gso_max_segs

dev->gso_max_segs is written under RTNL protection, or when the device is
not yet visible, but is read locklessly.

Add netif_set_gso_max_segs() helper.

net: annotate accesses to dev->gso_max_segs

dev->gso_max_segs is written under RTNL protection, or when the device is
not yet visible, but is read locklessly.

Add netif_set_gso_max_segs() helper.

Add the READ_ONCE()/WRITE_ONCE() pairs, and use netif_set_gso_max_segs()
where we can to better document what is going on.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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octeontx2-nicvf: fix ioctl callback

The mii ioctls are now handled by the ndo_eth_ioctl() callback,
not the old ndo_do_ioctl(), but octeontx2-nicvf introduced the
function for the old way.

Move it

octeontx2-nicvf: fix ioctl callback

The mii ioctls are now handled by the ndo_eth_ioctl() callback,
not the old ndo_do_ioctl(), but octeontx2-nicvf introduced the
function for the old way.

Move it over to ndo_eth_ioctl() to actually allow calling it from
user space.

Fixes: 43510ef4ddad ("octeontx2-nicvf: Add PTP hardware clock support to NIX VF")
Fixes: a76053707dbf ("dev_ioctl: split out ndo_eth_ioctl")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

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ethernet: Remove redundant 'flush_workqueue()' calls

'destroy_workqueue()' already drains the queue before destroying it, so
there is no need to flush it explicitly.

Remove the redundant 'flush_wor

ethernet: Remove redundant 'flush_workqueue()' calls

'destroy_workqueue()' already drains the queue before destroying it, so
there is no need to flush it explicitly.

Remove the redundant 'flush_workqueue()' calls.

This was generated with coccinelle:

@@
expression E;
@@
- flush_workqueue(E);
destroy_workqueue(E);

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com> #mlx*
Signed-off-by: David S. Miller <davem@davemloft.net>

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octeontx2-pf: Add XDP support to netdev PF

Adds XDP_PASS, XDP_TX, XDP_DROP and XDP_REDIRECT support
for netdev PF.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Goutham <

octeontx2-pf: Add XDP support to netdev PF

Adds XDP_PASS, XDP_TX, XDP_DROP and XDP_REDIRECT support
for netdev PF.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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octeontx2-nicvf: Add PTP hardware clock support to NIX VF

This patch adds PTP PHC support to NIX VF interfaces. This enables
a VF to run PTP master/slave instance. PTP block being a shared
hardware

octeontx2-nicvf: Add PTP hardware clock support to NIX VF

This patch adds PTP PHC support to NIX VF interfaces. This enables
a VF to run PTP master/slave instance. PTP block being a shared
hardware resource it is recommended to avoid running multiple
PTP instances in the system which will impact the PTP clock
accuracy.

Signed-off-by: Naveen Mamindlapalli <naveenm@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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octeontx2-pf: Fix inconsistent license text

Fixed inconsistent license text across the netdev
drivers.

Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@dave

octeontx2-pf: Fix inconsistent license text

Fixed inconsistent license text across the netdev
drivers.

Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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octeontx2-pf: devlink params support to set mcam entry count

Added support for setting or modifying MCAM entry count at
runtime via devlink params.

commands:
devlink dev param show
pci/0002:02:00

octeontx2-pf: devlink params support to set mcam entry count

Added support for setting or modifying MCAM entry count at
runtime via devlink params.

commands:
devlink dev param show
pci/0002:02:00.0:
name mcam_count type driver-specific
values:
cmode runtime value 16

devlink dev param set pci/0002:02:00.0 name mcam_count
value 64 cmode runtime

Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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octeontx2-pf: Ntuple filters support for VF netdev

Add packet flow classification support for both LMAC mapped virtual
functions and loopback VFs. This patch adds supports for ntuple
offload feature

octeontx2-pf: Ntuple filters support for VF netdev

Add packet flow classification support for both LMAC mapped virtual
functions and loopback VFs. This patch adds supports for ntuple
offload feature.

Signed-off-by: Rakesh Babu <rsaladi2@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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