From 54b4a0a50f472ece513e97365619b6a3df63f273 Mon Sep 17 00:00:00 2001 From: Viacheslav Hletenko Date: Tue, 17 Oct 2023 11:19:27 +0000 Subject: T1797: Delete VPP from vyos-1x as it is implemented in addon (cherry picked from commit 59c8d5febb2b1333643372f8956fa8f219d022cb) --- python/vyos/vpp.py | 315 ----------------------------------------------------- 1 file changed, 315 deletions(-) delete mode 100644 python/vyos/vpp.py (limited to 'python') diff --git a/python/vyos/vpp.py b/python/vyos/vpp.py deleted file mode 100644 index 76e5d29c3..000000000 --- a/python/vyos/vpp.py +++ /dev/null @@ -1,315 +0,0 @@ -# Copyright 2023 VyOS maintainers and contributors -# -# This library is free software; you can redistribute it and/or -# modify it under the terms of the GNU Lesser General Public -# License as published by the Free Software Foundation; either -# version 2.1 of the License, or (at your option) any later version. -# -# This library is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -# Lesser General Public License for more details. -# -# You should have received a copy of the GNU Lesser General Public -# License along with this library. If not, see . - -from functools import wraps -from pathlib import Path -from re import search as re_search, fullmatch as re_fullmatch, MULTILINE as re_M -from subprocess import run -from time import sleep - -from vpp_papi import VPPApiClient -from vpp_papi import VPPIOError, VPPValueError - - -class VPPControl: - """Control VPP network stack - """ - - class _Decorators: - """Decorators for VPPControl - """ - - @classmethod - def api_call(cls, decorated_func): - """Check if API is connected before API call - - Args: - decorated_func: function to decorate - - Raises: - VPPIOError: Connection to API is not established - """ - - @wraps(decorated_func) - def api_safe_wrapper(cls, *args, **kwargs): - if not cls.vpp_api_client.transport.connected: - raise VPPIOError(2, 'VPP API is not connected') - return decorated_func(cls, *args, **kwargs) - - return api_safe_wrapper - - @classmethod - def check_retval(cls, decorated_func): - """Check retval from API response - - Args: - decorated_func: function to decorate - - Raises: - VPPValueError: raised when retval is not 0 - """ - - @wraps(decorated_func) - def check_retval_wrapper(cls, *args, **kwargs): - return_value = decorated_func(cls, *args, **kwargs) - if not return_value.retval == 0: - raise VPPValueError( - f'VPP API call failed: {return_value.retval}') - return return_value - - return check_retval_wrapper - - def __init__(self, attempts: int = 5, interval: int = 1000) -> None: - """Create VPP API connection - - Args: - attempts (int, optional): attempts to connect. Defaults to 5. - interval (int, optional): interval between attempts in ms. Defaults to 1000. - - Raises: - VPPIOError: Connection to API cannot be established - """ - self.vpp_api_client = VPPApiClient() - # connect with interval - while attempts: - try: - attempts -= 1 - self.vpp_api_client.connect('vpp-vyos') - break - except (ConnectionRefusedError, FileNotFoundError) as err: - print(f'VPP API connection timeout: {err}') - sleep(interval / 1000) - # raise exception if connection was not successful in the end - if not self.vpp_api_client.transport.connected: - raise VPPIOError(2, 'Cannot connect to VPP API') - - def __del__(self) -> None: - """Disconnect from VPP API (destructor) - """ - self.disconnect() - - def disconnect(self) -> None: - """Disconnect from VPP API - """ - if self.vpp_api_client.transport.connected: - self.vpp_api_client.disconnect() - - @_Decorators.check_retval - @_Decorators.api_call - def cli_cmd(self, command: str): - """Send raw CLI command - - Args: - command (str): command to send - - Returns: - vpp_papi.vpp_serializer.cli_inband_reply: CLI reply class - """ - return self.vpp_api_client.api.cli_inband(cmd=command) - - @_Decorators.api_call - def get_mac(self, ifname: str) -> str: - """Find MAC address by interface name in VPP - - Args: - ifname (str): interface name inside VPP - - Returns: - str: MAC address - """ - for iface in self.vpp_api_client.api.sw_interface_dump(): - if iface.interface_name == ifname: - return iface.l2_address.mac_string - return '' - - @_Decorators.api_call - def get_sw_if_index(self, ifname: str) -> int | None: - """Find interface index by interface name in VPP - - Args: - ifname (str): interface name inside VPP - - Returns: - int | None: Interface index or None (if was not fount) - """ - for iface in self.vpp_api_client.api.sw_interface_dump(): - if iface.interface_name == ifname: - return iface.sw_if_index - return None - - @_Decorators.check_retval - @_Decorators.api_call - def lcp_pair_add(self, iface_name_vpp: str, iface_name_kernel: str) -> None: - """Create LCP interface pair between VPP and kernel - - Args: - iface_name_vpp (str): interface name in VPP - iface_name_kernel (str): interface name in kernel - """ - iface_index = self.get_sw_if_index(iface_name_vpp) - if iface_index: - return self.vpp_api_client.api.lcp_itf_pair_add_del( - is_add=True, - sw_if_index=iface_index, - host_if_name=iface_name_kernel) - - @_Decorators.check_retval - @_Decorators.api_call - def lcp_pair_del(self, iface_name_vpp: str, iface_name_kernel: str) -> None: - """Delete LCP interface pair between VPP and kernel - - Args: - iface_name_vpp (str): interface name in VPP - iface_name_kernel (str): interface name in kernel - """ - iface_index = self.get_sw_if_index(iface_name_vpp) - if iface_index: - return self.vpp_api_client.api.lcp_itf_pair_add_del( - is_add=False, - sw_if_index=iface_index, - host_if_name=iface_name_kernel) - - @_Decorators.check_retval - @_Decorators.api_call - def iface_rxmode(self, iface_name: str, rx_mode: str) -> None: - """Set interface rx-mode in VPP - - Args: - iface_name (str): interface name in VPP - rx_mode (str): mode (polling, interrupt, adaptive) - """ - modes_dict: dict[str, int] = { - 'polling': 1, - 'interrupt': 2, - 'adaptive': 3 - } - if rx_mode not in modes_dict: - raise VPPValueError(f'Mode {rx_mode} is not known') - iface_index = self.get_sw_if_index(iface_name) - return self.vpp_api_client.api.sw_interface_set_rx_mode( - sw_if_index=iface_index, mode=modes_dict[rx_mode]) - - @_Decorators.api_call - def get_pci_addr(self, ifname: str) -> str: - """Find PCI address of interface by interface name in VPP - - Args: - ifname (str): interface name inside VPP - - Returns: - str: PCI address - """ - hw_info = self.cli_cmd(f'show hardware-interfaces {ifname}').reply - - regex_filter = r'^\s+pci: device (?P\w+:\w+) subsystem (?P\w+:\w+) address (?P
\w+:\w+:\w+\.\w+) numa (?P\w+)$' - re_obj = re_search(regex_filter, hw_info, re_M) - - # return empty string if no interface or no PCI info was found - if not hw_info or not re_obj: - return '' - - address = re_obj.groupdict().get('address', '') - - # we need to modify address to math kernel style - # for example: 0000:06:14.00 -> 0000:06:14.0 - address_chunks: list[str] = address.split('.') - address_normalized: str = f'{address_chunks[0]}.{int(address_chunks[1])}' - - return address_normalized - - -class HostControl: - """Control Linux host - """ - - @staticmethod - def pci_rescan(pci_addr: str = '') -> None: - """Rescan PCI device by removing it and rescan PCI bus - - If PCI address is not defined - just rescan PCI bus - - Args: - address (str, optional): PCI address of device. Defaults to ''. - """ - if pci_addr: - device_file = Path(f'/sys/bus/pci/devices/{pci_addr}/remove') - if device_file.exists(): - device_file.write_text('1') - # wait 10 seconds max until device will be removed - attempts = 100 - while device_file.exists() and attempts: - attempts -= 1 - sleep(0.1) - if device_file.exists(): - raise TimeoutError( - f'Timeout was reached for removing PCI device {pci_addr}' - ) - else: - raise FileNotFoundError(f'PCI device {pci_addr} does not exist') - rescan_file = Path('/sys/bus/pci/rescan') - rescan_file.write_text('1') - if pci_addr: - # wait 10 seconds max until device will be installed - attempts = 100 - while not device_file.exists() and attempts: - attempts -= 1 - sleep(0.1) - if not device_file.exists(): - raise TimeoutError( - f'Timeout was reached for installing PCI device {pci_addr}') - - @staticmethod - def get_eth_name(pci_addr: str) -> str: - """Find Ethernet interface name by PCI address - - Args: - pci_addr (str): PCI address - - Raises: - FileNotFoundError: no Ethernet interface was found - - Returns: - str: Ethernet interface name - """ - # find all PCI devices with eth* names - net_devs: dict[str, str] = {} - net_devs_dir = Path('/sys/class/net') - regex_filter = r'^/sys/devices/pci[\w/:\.]+/(?P\w+:\w+:\w+\.\w+)/[\w/:\.]+/(?Peth\d+)$' - for dir in net_devs_dir.iterdir(): - real_dir: str = dir.resolve().as_posix() - re_obj = re_fullmatch(regex_filter, real_dir) - if re_obj: - iface_name: str = re_obj.group('iface_name') - iface_addr: str = re_obj.group('pci_addr') - net_devs.update({iface_addr: iface_name}) - # match to provided PCI address and return a name if found - if pci_addr in net_devs: - return net_devs[pci_addr] - # raise error if device was not found - raise FileNotFoundError( - f'PCI device {pci_addr} not found in ethernet interfaces') - - @staticmethod - def rename_iface(name_old: str, name_new: str) -> None: - """Rename interface - - Args: - name_old (str): old name - name_new (str): new name - """ - rename_cmd: list[str] = [ - 'ip', 'link', 'set', name_old, 'name', name_new - ] - run(rename_cmd) -- cgit v1.2.3