octeontx2-pf: Fix coverity and klockwork issues in octeon PF driver

Fix unintended sign extension and klockwork issues. These are not real
issue but for sanity checks.

Signed-off-by: Ratheesh Kanno

octeontx2-pf: Fix coverity and klockwork issues in octeon PF driver

Fix unintended sign extension and klockwork issues. These are not real
issue but for sanity checks.

Signed-off-by: Ratheesh Kannoth <rkannoth@marvell.com>
Signed-off-by: Suman Ghosh <sumang@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Octeontx2-pf: Free send queue buffers incase of leaf to inner

There are two type of classes. "Leaf classes" that are the
bottom of the class hierarchy. "Inner classes" that are neither
the root cla

Octeontx2-pf: Free send queue buffers incase of leaf to inner

There are two type of classes. "Leaf classes" that are the
bottom of the class hierarchy. "Inner classes" that are neither
the root class nor leaf classes. QoS rules can only specify leaf
classes as targets for traffic.

Root
/ \
/ \
1 2
/\
/ \
4 5
classes 1,4 and 5 are leaf classes.
class 2 is a inner class.

When a leaf class made as inner, or vice versa, resources associated
with send queue (send queue buffers and transmit schedulers) are not
getting freed.

Fixes: 5e6808b4c68d ("octeontx2-pf: Add support for HTB offload")
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Link: https://lore.kernel.org/r/20240523073626.4114-1-hkelam@marvell.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

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octeontx2-pf: Reuse Transmit queue/Send queue index of HTB class

Real number of Transmit queues are incremented when user enables HTB
class and vice versa. Depending on SKB priority driver returns t

octeontx2-pf: Reuse Transmit queue/Send queue index of HTB class

Real number of Transmit queues are incremented when user enables HTB
class and vice versa. Depending on SKB priority driver returns transmit
queue (Txq). Transmit queues and Send queues are one-to-one mapped.

In few scenarios, Driver is returning transmit queue value which is
greater than real number of transmit queue and Stack detects this as
error and overwrites transmit queue value.

For example
user has added two classes and real number of queues are incremented
accordingly
- tc class add dev eth1 parent 1: classid 1:1 htb
rate 100Mbit ceil 100Mbit prio 1 quantum 1024
- tc class add dev eth1 parent 1: classid 1:2 htb
rate 100Mbit ceil 200Mbit prio 7 quantum 1024

now if user deletes the class with id 1:1, driver decrements the real
number of queues
- tc class del dev eth1 classid 1:1

But for the class with id 1:2, driver is returning transmit queue
value which is higher than real number of transmit queue leading
to below error

eth1 selects TX queue x, but real number of TX queues is x

This patch solves the problem by assigning deleted class transmit
queue/send queue to active class.

Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20240508070935.11501-1-hkelam@marvell.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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octeontx2-pf: Fix transmit scheduler resource leak

Inorder to support shaping and scheduling, Upon class creation
Netdev driver allocates trasmit schedulers.

The previous patch which added support

octeontx2-pf: Fix transmit scheduler resource leak

Inorder to support shaping and scheduling, Upon class creation
Netdev driver allocates trasmit schedulers.

The previous patch which added support for Round robin scheduling has
a bug due to which driver is not freeing transmit schedulers post
class deletion.

This patch fixes the same.

Fixes: 47a9656f168a ("octeontx2-pf: htb offload support for Round Robin scheduling")
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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octeontx2-pf: htb offload support for Round Robin scheduling

When multiple traffic flows reach Transmit level with the same
priority, with Round robin scheduling traffic flow with the highest
quantu

octeontx2-pf: htb offload support for Round Robin scheduling

When multiple traffic flows reach Transmit level with the same
priority, with Round robin scheduling traffic flow with the highest
quantum value is picked. With this support, the user can add multiple
classes with the same priority and different quantum. This patch
does necessary changes to support the same.

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

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octeontx2-pf: implement transmit schedular allocation algorithm

unlike strict priority, where number of classes are limited to max
8, there is no restriction on the number of dwrr child nodes unless

octeontx2-pf: implement transmit schedular allocation algorithm

unlike strict priority, where number of classes are limited to max
8, there is no restriction on the number of dwrr child nodes unless
the count increases the max number of child nodes supported.

Hardware expects strict priority transmit schedular indexes mapped
to their priority. This patch adds defines transmit schedular allocation
algorithm such that the above requirement is honored.

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

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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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