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Merge branch 'tools-ynl-fill-in-some-gaps-of-ethtool-spec'
Stanislav Fomichev says: ==================== tools: ynl: fill in some gaps of ethtool spec I was trying to fill in the spec while exploring ethtool API for some related work. I don't think I'll have the patience to fill in the rest, so decided to share whatever I currently have. Patches 1-2 add the be16 + spec. Patches 3-4 implement an ethtool-like python tool to test the spec. Patches 3-4 are there because it felt more fun do the tool instead of writing the actual tests; feel free to drop it; sharing mostly to show that the spec is not a complete nonsense. The spec is not 100% complete, see patch 2 for what's missing. I was hoping to finish the stats-get message, but I'm too dump to implement bitmask marshaling (multi-attr). ==================== Link: https://lore.kernel.org/r/20230329221655.708489-1-sdf@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jakub Kicinski
commit
dee1efb301
File diff suppressed because it is too large
Load Diff
424
tools/net/ynl/ethtool
Executable file
424
tools/net/ynl/ethtool
Executable file
@ -0,0 +1,424 @@
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#!/usr/bin/env python3
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# SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
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import argparse
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import json
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import pprint
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import sys
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import re
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from lib import YnlFamily
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def args_to_req(ynl, op_name, args, req):
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"""
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Verify and convert command-line arguments to the ynl-compatible request.
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"""
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valid_attrs = ynl.operation_do_attributes(op_name)
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valid_attrs.remove('header') # not user-provided
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if len(args) == 0:
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print(f'no attributes, expected: {valid_attrs}')
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sys.exit(1)
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i = 0
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while i < len(args):
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attr = args[i]
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if i + 1 >= len(args):
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print(f'expected value for \'{attr}\'')
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sys.exit(1)
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if attr not in valid_attrs:
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print(f'invalid attribute \'{attr}\', expected: {valid_attrs}')
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sys.exit(1)
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val = args[i+1]
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i += 2
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req[attr] = val
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def print_field(reply, *desc):
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"""
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Pretty-print a set of fields from the reply. desc specifies the
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fields and the optional type (bool/yn).
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"""
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if len(desc) == 0:
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return print_field(reply, *zip(reply.keys(), reply.keys()))
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for spec in desc:
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try:
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field, name, tp = spec
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except:
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field, name = spec
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tp = 'int'
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value = reply.get(field, None)
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if tp == 'yn':
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value = 'yes' if value else 'no'
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elif tp == 'bool' or isinstance(value, bool):
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value = 'on' if value else 'off'
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else:
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value = 'n/a' if value is None else value
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print(f'{name}: {value}')
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def print_speed(name, value):
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"""
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Print out the speed-like strings from the value dict.
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"""
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speed_re = re.compile(r'[0-9]+base[^/]+/.+')
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speed = [ k for k, v in value.items() if v and speed_re.match(k) ]
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print(f'{name}: {" ".join(speed)}')
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def doit(ynl, args, op_name):
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"""
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Prepare request header, parse arguments and doit.
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"""
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req = {
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'header': {
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'dev-name': args.device,
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},
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}
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args_to_req(ynl, op_name, args.args, req)
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ynl.do(op_name, req)
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def dumpit(ynl, args, op_name, extra = {}):
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"""
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Prepare request header, parse arguments and dumpit (filtering out the
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devices we're not interested in).
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"""
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reply = ynl.dump(op_name, { 'header': {} } | extra)
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if not reply:
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return {}
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for msg in reply:
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if msg['header']['dev-name'] == args.device:
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if args.json:
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pprint.PrettyPrinter().pprint(msg)
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sys.exit(0)
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msg.pop('header', None)
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return msg
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print(f"Not supported for device {args.device}")
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sys.exit(1)
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def bits_to_dict(attr):
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"""
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Convert ynl-formatted bitmask to a dict of bit=value.
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"""
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ret = {}
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if 'bits' not in attr:
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return dict()
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if 'bit' not in attr['bits']:
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return dict()
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for bit in attr['bits']['bit']:
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if bit['name'] == '':
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continue
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name = bit['name']
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value = bit.get('value', False)
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ret[name] = value
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return ret
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def main():
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parser = argparse.ArgumentParser(description='ethtool wannabe')
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parser.add_argument('--json', action=argparse.BooleanOptionalAction)
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parser.add_argument('--show-priv-flags', action=argparse.BooleanOptionalAction)
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parser.add_argument('--set-priv-flags', action=argparse.BooleanOptionalAction)
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parser.add_argument('--show-eee', action=argparse.BooleanOptionalAction)
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parser.add_argument('--set-eee', action=argparse.BooleanOptionalAction)
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parser.add_argument('-a', '--show-pause', action=argparse.BooleanOptionalAction)
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parser.add_argument('-A', '--set-pause', action=argparse.BooleanOptionalAction)
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parser.add_argument('-c', '--show-coalesce', action=argparse.BooleanOptionalAction)
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parser.add_argument('-C', '--set-coalesce', action=argparse.BooleanOptionalAction)
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parser.add_argument('-g', '--show-ring', action=argparse.BooleanOptionalAction)
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parser.add_argument('-G', '--set-ring', action=argparse.BooleanOptionalAction)
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parser.add_argument('-k', '--show-features', action=argparse.BooleanOptionalAction)
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parser.add_argument('-K', '--set-features', action=argparse.BooleanOptionalAction)
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parser.add_argument('-l', '--show-channels', action=argparse.BooleanOptionalAction)
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parser.add_argument('-L', '--set-channels', action=argparse.BooleanOptionalAction)
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parser.add_argument('-T', '--show-time-stamping', action=argparse.BooleanOptionalAction)
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parser.add_argument('-S', '--statistics', action=argparse.BooleanOptionalAction)
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# TODO: --show-tunnels tunnel-info-get
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# TODO: --show-module module-get
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# TODO: --get-plca-cfg plca-get
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# TODO: --get-plca-status plca-get-status
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# TODO: --show-mm mm-get
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# TODO: --show-fec fec-get
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# TODO: --dump-module-eerpom module-eeprom-get
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# TODO: pse-get
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# TODO: rss-get
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parser.add_argument('device', metavar='device', type=str)
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parser.add_argument('args', metavar='args', type=str, nargs='*')
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global args
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args = parser.parse_args()
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spec = '/usr/local/google/home/sdf/src/linux/Documentation/netlink/specs/ethtool.yaml'
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schema = '/usr/local/google/home/sdf/src/linux/Documentation/netlink/genetlink-legacy.yaml'
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ynl = YnlFamily(spec, schema)
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if args.set_priv_flags:
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# TODO: parse the bitmask
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print("not implemented")
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return
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if args.set_eee:
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return doit(ynl, args, 'eee-set')
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if args.set_pause:
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return doit(ynl, args, 'pause-set')
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if args.set_coalesce:
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return doit(ynl, args, 'coalesce-set')
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if args.set_features:
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# TODO: parse the bitmask
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print("not implemented")
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return
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if args.set_channels:
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return doit(ynl, args, 'channels-set')
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if args.set_ring:
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return doit(ynl, args, 'rings-set')
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if args.show_priv_flags:
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flags = bits_to_dict(dumpit(ynl, args, 'privflags-get')['flags'])
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print_field(flags)
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return
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if args.show_eee:
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eee = dumpit(ynl, args, 'eee-get')
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ours = bits_to_dict(eee['modes-ours'])
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peer = bits_to_dict(eee['modes-peer'])
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if 'enabled' in eee:
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status = 'enabled' if eee['enabled'] else 'disabled'
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if 'active' in eee and eee['active']:
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status = status + ' - active'
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else:
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status = status + ' - inactive'
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else:
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status = 'not supported'
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print(f'EEE status: {status}')
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print_field(eee, ('tx-lpi-timer', 'Tx LPI'))
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print_speed('Advertised EEE link modes', ours)
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print_speed('Link partner advertised EEE link modes', peer)
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return
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if args.show_pause:
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print_field(dumpit(ynl, args, 'pause-get'),
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('autoneg', 'Autonegotiate', 'bool'),
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('rx', 'RX', 'bool'),
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('tx', 'TX', 'bool'))
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return
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if args.show_coalesce:
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print_field(dumpit(ynl, args, 'coalesce-get'))
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return
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if args.show_features:
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reply = dumpit(ynl, args, 'features-get')
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available = bits_to_dict(reply['hw'])
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requested = bits_to_dict(reply['wanted']).keys()
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active = bits_to_dict(reply['active']).keys()
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never_changed = bits_to_dict(reply['nochange']).keys()
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for f in sorted(available):
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value = "off"
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if f in active:
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value = "on"
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fixed = ""
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if f not in available or f in never_changed:
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fixed = " [fixed]"
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req = ""
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if f in requested:
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if f in active:
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req = " [requested on]"
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else:
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req = " [requested off]"
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print(f'{f}: {value}{fixed}{req}')
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return
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if args.show_channels:
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reply = dumpit(ynl, args, 'channels-get')
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print(f'Channel parameters for {args.device}:')
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print(f'Pre-set maximums:')
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print_field(reply,
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('rx-max', 'RX'),
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('tx-max', 'TX'),
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('other-max', 'Other'),
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('combined-max', 'Combined'))
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print(f'Current hardware settings:')
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print_field(reply,
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('rx-count', 'RX'),
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('tx-count', 'TX'),
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('other-count', 'Other'),
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('combined-count', 'Combined'))
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return
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if args.show_ring:
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reply = dumpit(ynl, args, 'channels-get')
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print(f'Ring parameters for {args.device}:')
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print(f'Pre-set maximums:')
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print_field(reply,
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('rx-max', 'RX'),
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('rx-mini-max', 'RX Mini'),
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('rx-jumbo-max', 'RX Jumbo'),
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('tx-max', 'TX'))
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print(f'Current hardware settings:')
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print_field(reply,
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('rx', 'RX'),
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('rx-mini', 'RX Mini'),
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('rx-jumbo', 'RX Jumbo'),
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('tx', 'TX'))
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print_field(reply,
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('rx-buf-len', 'RX Buf Len'),
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('cqe-size', 'CQE Size'),
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('tx-push', 'TX Push', 'bool'))
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return
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if args.statistics:
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print(f'NIC statistics:')
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# TODO: pass id?
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strset = dumpit(ynl, args, 'strset-get')
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pprint.PrettyPrinter().pprint(strset)
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req = {
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'groups': {
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'size': 1,
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'bits': {
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'bit':
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# TODO: support passing the bitmask
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#[
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#{ 'name': 'eth-phy', 'value': True },
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{ 'name': 'eth-mac', 'value': True },
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#{ 'name': 'eth-ctrl', 'value': True },
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#{ 'name': 'rmon', 'value': True },
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#],
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},
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},
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}
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rsp = dumpit(ynl, args, 'stats-get', req)
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pprint.PrettyPrinter().pprint(rsp)
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return
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if args.show_time_stamping:
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tsinfo = dumpit(ynl, args, 'tsinfo-get')
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print(f'Time stamping parameters for {args.device}:')
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print('Capabilities:')
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[print(f'\t{v}') for v in bits_to_dict(tsinfo['timestamping'])]
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print(f'PTP Hardware Clock: {tsinfo["phc-index"]}')
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print('Hardware Transmit Timestamp Modes:')
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[print(f'\t{v}') for v in bits_to_dict(tsinfo['tx-types'])]
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print('Hardware Receive Filter Modes:')
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[print(f'\t{v}') for v in bits_to_dict(tsinfo['rx-filters'])]
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return
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print(f'Settings for {args.device}:')
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linkmodes = dumpit(ynl, args, 'linkmodes-get')
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ours = bits_to_dict(linkmodes['ours'])
|
||||
|
||||
supported_ports = ('TP', 'AUI', 'BNC', 'MII', 'FIBRE', 'Backplane')
|
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ports = [ p for p in supported_ports if ours.get(p, False)]
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print(f'Supported ports: [ {" ".join(ports)} ]')
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||||
print_speed('Supported link modes', ours)
|
||||
|
||||
print_field(ours, ('Pause', 'Supported pause frame use', 'yn'))
|
||||
print_field(ours, ('Autoneg', 'Supports auto-negotiation', 'yn'))
|
||||
|
||||
supported_fec = ('None', 'PS', 'BASER', 'LLRS')
|
||||
fec = [ p for p in supported_fec if ours.get(p, False)]
|
||||
fec_str = " ".join(fec)
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||||
if len(fec) == 0:
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||||
fec_str = "Not reported"
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||||
|
||||
print(f'Supported FEC modes: {fec_str}')
|
||||
|
||||
speed = 'Unknown!'
|
||||
if linkmodes['speed'] > 0 and linkmodes['speed'] < 0xffffffff:
|
||||
speed = f'{linkmodes["speed"]}Mb/s'
|
||||
print(f'Speed: {speed}')
|
||||
|
||||
duplex_modes = {
|
||||
0: 'Half',
|
||||
1: 'Full',
|
||||
}
|
||||
duplex = duplex_modes.get(linkmodes["duplex"], None)
|
||||
if not duplex:
|
||||
duplex = f'Unknown! ({linkmodes["duplex"]})'
|
||||
print(f'Duplex: {duplex}')
|
||||
|
||||
autoneg = "off"
|
||||
if linkmodes.get("autoneg", 0) != 0:
|
||||
autoneg = "on"
|
||||
print(f'Auto-negotiation: {autoneg}')
|
||||
|
||||
ports = {
|
||||
0: 'Twisted Pair',
|
||||
1: 'AUI',
|
||||
2: 'MII',
|
||||
3: 'FIBRE',
|
||||
4: 'BNC',
|
||||
5: 'Directly Attached Copper',
|
||||
0xef: 'None',
|
||||
}
|
||||
linkinfo = dumpit(ynl, args, 'linkinfo-get')
|
||||
print(f'Port: {ports.get(linkinfo["port"], "Other")}')
|
||||
|
||||
print_field(linkinfo, ('phyaddr', 'PHYAD'))
|
||||
|
||||
transceiver = {
|
||||
0: 'Internal',
|
||||
1: 'External',
|
||||
}
|
||||
print(f'Transceiver: {transceiver.get(linkinfo["transceiver"], "Unknown")}')
|
||||
|
||||
mdix_ctrl = {
|
||||
1: 'off',
|
||||
2: 'on',
|
||||
}
|
||||
mdix = mdix_ctrl.get(linkinfo['tp-mdix-ctrl'], None)
|
||||
if mdix:
|
||||
mdix = mdix + ' (forced)'
|
||||
else:
|
||||
mdix = mdix_ctrl.get(linkinfo['tp-mdix'], 'Unknown (auto)')
|
||||
print(f'MDI-X: {mdix}')
|
||||
|
||||
debug = dumpit(ynl, args, 'debug-get')
|
||||
msgmask = bits_to_dict(debug.get("msgmask", [])).keys()
|
||||
print(f'Current message level: {" ".join(msgmask)}')
|
||||
|
||||
linkstate = dumpit(ynl, args, 'linkstate-get')
|
||||
detected_states = {
|
||||
0: 'no',
|
||||
1: 'yes',
|
||||
}
|
||||
# TODO: wol-get
|
||||
detected = detected_states.get(linkstate['link'], 'unknown')
|
||||
print(f'Link detected: {detected}')
|
||||
|
||||
if __name__ == '__main__':
|
||||
main()
|
||||
@ -163,6 +163,7 @@ class SpecAttr(SpecElement):
|
||||
self.is_multi = yaml.get('multi-attr', False)
|
||||
self.struct_name = yaml.get('struct')
|
||||
self.sub_type = yaml.get('sub-type')
|
||||
self.byte_order = yaml.get('byte-order')
|
||||
|
||||
|
||||
class SpecAttrSet(SpecElement):
|
||||
@ -443,6 +444,15 @@ class SpecFamily(SpecElement):
|
||||
|
||||
self.msgs[op.name] = op
|
||||
|
||||
def find_operation(self, name):
|
||||
"""
|
||||
For a given operation name, find and return operation spec.
|
||||
"""
|
||||
for op in self.yaml['operations']['list']:
|
||||
if name == op['name']:
|
||||
return op
|
||||
return None
|
||||
|
||||
def resolve(self):
|
||||
self.resolve_up(super())
|
||||
|
||||
|
||||
@ -67,6 +67,14 @@ class Netlink:
|
||||
NLMSGERR_ATTR_MISS_NEST = 6
|
||||
|
||||
|
||||
class NlError(Exception):
|
||||
def __init__(self, nl_msg):
|
||||
self.nl_msg = nl_msg
|
||||
|
||||
def __str__(self):
|
||||
return f"Netlink error: {os.strerror(-self.nl_msg.error)}\n{self.nl_msg}"
|
||||
|
||||
|
||||
class NlAttr:
|
||||
type_formats = { 'u8' : ('B', 1), 's8' : ('b', 1),
|
||||
'u16': ('H', 2), 's16': ('h', 2),
|
||||
@ -80,17 +88,25 @@ class NlAttr:
|
||||
self.full_len = (self.payload_len + 3) & ~3
|
||||
self.raw = raw[offset + 4:offset + self.payload_len]
|
||||
|
||||
def format_byte_order(byte_order):
|
||||
if byte_order:
|
||||
return ">" if byte_order == "big-endian" else "<"
|
||||
return ""
|
||||
|
||||
def as_u8(self):
|
||||
return struct.unpack("B", self.raw)[0]
|
||||
|
||||
def as_u16(self):
|
||||
return struct.unpack("H", self.raw)[0]
|
||||
def as_u16(self, byte_order=None):
|
||||
endian = NlAttr.format_byte_order(byte_order)
|
||||
return struct.unpack(f"{endian}H", self.raw)[0]
|
||||
|
||||
def as_u32(self):
|
||||
return struct.unpack("I", self.raw)[0]
|
||||
def as_u32(self, byte_order=None):
|
||||
endian = NlAttr.format_byte_order(byte_order)
|
||||
return struct.unpack(f"{endian}I", self.raw)[0]
|
||||
|
||||
def as_u64(self):
|
||||
return struct.unpack("Q", self.raw)[0]
|
||||
def as_u64(self, byte_order=None):
|
||||
endian = NlAttr.format_byte_order(byte_order)
|
||||
return struct.unpack(f"{endian}Q", self.raw)[0]
|
||||
|
||||
def as_strz(self):
|
||||
return self.raw.decode('ascii')[:-1]
|
||||
@ -365,11 +381,14 @@ class YnlFamily(SpecFamily):
|
||||
elif attr["type"] == 'u8':
|
||||
attr_payload = struct.pack("B", int(value))
|
||||
elif attr["type"] == 'u16':
|
||||
attr_payload = struct.pack("H", int(value))
|
||||
endian = NlAttr.format_byte_order(attr.byte_order)
|
||||
attr_payload = struct.pack(f"{endian}H", int(value))
|
||||
elif attr["type"] == 'u32':
|
||||
attr_payload = struct.pack("I", int(value))
|
||||
endian = NlAttr.format_byte_order(attr.byte_order)
|
||||
attr_payload = struct.pack(f"{endian}I", int(value))
|
||||
elif attr["type"] == 'u64':
|
||||
attr_payload = struct.pack("Q", int(value))
|
||||
endian = NlAttr.format_byte_order(attr.byte_order)
|
||||
attr_payload = struct.pack(f"{endian}Q", int(value))
|
||||
elif attr["type"] == 'string':
|
||||
attr_payload = str(value).encode('ascii') + b'\x00'
|
||||
elif attr["type"] == 'binary':
|
||||
@ -415,11 +434,11 @@ class YnlFamily(SpecFamily):
|
||||
elif attr_spec['type'] == 'u8':
|
||||
decoded = attr.as_u8()
|
||||
elif attr_spec['type'] == 'u16':
|
||||
decoded = attr.as_u16()
|
||||
decoded = attr.as_u16(attr_spec.byte_order)
|
||||
elif attr_spec['type'] == 'u32':
|
||||
decoded = attr.as_u32()
|
||||
decoded = attr.as_u32(attr_spec.byte_order)
|
||||
elif attr_spec['type'] == 'u64':
|
||||
decoded = attr.as_u64()
|
||||
decoded = attr.as_u64(attr_spec.byte_order)
|
||||
elif attr_spec["type"] == 'string':
|
||||
decoded = attr.as_strz()
|
||||
elif attr_spec["type"] == 'binary':
|
||||
@ -508,6 +527,17 @@ class YnlFamily(SpecFamily):
|
||||
|
||||
self.handle_ntf(nl_msg, gm)
|
||||
|
||||
def operation_do_attributes(self, name):
|
||||
"""
|
||||
For a given operation name, find and return a supported
|
||||
set of attributes (as a dict).
|
||||
"""
|
||||
op = self.find_operation(name)
|
||||
if not op:
|
||||
return None
|
||||
|
||||
return op['do']['request']['attributes'].copy()
|
||||
|
||||
def _op(self, method, vals, dump=False):
|
||||
op = self.ops[method]
|
||||
|
||||
@ -540,9 +570,7 @@ class YnlFamily(SpecFamily):
|
||||
self._decode_extack(msg, op.attr_set, nl_msg.extack)
|
||||
|
||||
if nl_msg.error:
|
||||
print("Netlink error:", os.strerror(-nl_msg.error))
|
||||
print(nl_msg)
|
||||
return
|
||||
raise NlError(nl_msg)
|
||||
if nl_msg.done:
|
||||
if nl_msg.extack:
|
||||
print("Netlink warning:")
|
||||
|
||||
Loading…
Reference in New Issue
Block a user