tools/testing/selftests/drivers/net/mlxsw/sharedbuffer_configuration.py

Source file repositories/reference/linux-study-clean/tools/testing/selftests/drivers/net/mlxsw/sharedbuffer_configuration.py

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/drivers/net/mlxsw/sharedbuffer_configuration.py
Extension
.py
Size
12658 bytes
Lines
417
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: tools
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

#!/usr/bin/env python
# SPDX-License-Identifier: GPL-2.0

import subprocess
import json as j
import random


class SkipTest(Exception):
    pass


class RandomValuePicker:
    """
    Class for storing shared buffer configuration. Can handle 3 different
    objects, pool, tcbind and portpool. Provide an interface to get random
    values for a specific object type as the follow:
      1. Pool:
         - random size

      2. TcBind:
         - random pool number
         - random threshold

      3. PortPool:
         - random threshold
    """
    def __init__(self, pools):
        self._pools = []
        for pool in pools:
            self._pools.append(pool)

    def _cell_size(self):
        return self._pools[0]["cell_size"]

    def _get_static_size(self, th):
        # For threshold of 16, this works out to be about 12MB on Spectrum-1,
        # and about 17MB on Spectrum-2.
        return th * 8000 * self._cell_size()

    def _get_size(self):
        return self._get_static_size(16)

    def _get_thtype(self):
        return "static"

    def _get_th(self, pool):
        # Threshold value could be any integer between 3 to 16
        th = random.randint(3, 16)
        if pool["thtype"] == "dynamic":
            return th
        else:
            return self._get_static_size(th)

    def _get_pool(self, direction):
        ing_pools = []
        egr_pools = []
        for pool in self._pools:
            if pool["type"] == "ingress":
                ing_pools.append(pool)
            else:
                egr_pools.append(pool)
        if direction == "ingress":
            arr = ing_pools
        else:
            arr = egr_pools
        return arr[random.randint(0, len(arr) - 1)]

    def get_value(self, objid):
        if isinstance(objid, Pool):

Annotation

Implementation Notes