mirror of
https://github.com/saymrwulf/uhd.git
synced 2026-05-15 21:01:26 +00:00
d3e6dd1140
- Moved nijesdcore to cores/ - Moved udev, net, dtoverlay, uio to sys_utils/ - Made all imports non-relative (except in __init__.py files) - Removed some unnecessary imports - Reordered some imports for Python conventions
130 lines
4.4 KiB
Python
130 lines
4.4 KiB
Python
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# Copyright 2017 Ettus Research (National Instruments)
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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"""
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N310 implementation module
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"""
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import itertools
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import socket
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from six import iteritems
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from pyroute2 import IPRoute
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from usrp_mpm.mpmlog import get_logger
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def get_valid_interfaces(iface_list):
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"""
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Given a list of interfaces (['eth1', 'eth2'] for example), return the
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subset that contains actually valid entries.
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Interfaces are checked for if they actually exist, and if so, if they're up.
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"""
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valid_ifaces = []
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with IPRoute() as ipr:
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for iface in iface_list:
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valid_iface_idx = ipr.link_lookup(ifname=iface)
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if len(valid_iface_idx) == 0:
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continue
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valid_iface_idx = valid_iface_idx[0]
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link_info = ipr.get_links(valid_iface_idx)[0]
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if link_info.get_attr('IFLA_OPERSTATE') == 'UP' \
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and len(get_iface_addrs(link_info.get_attr('IFLA_ADDRESS'))):
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assert link_info.get_attr('IFLA_IFNAME') == iface
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valid_ifaces.append(iface)
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return valid_ifaces
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def get_iface_info(ifname):
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"""
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Given an interface name (e.g. 'eth1'), return a dictionary with the
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following keys:
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- ip_addr: Main IPv4 address
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- ip_addrs: List of valid IPv4 addresses
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- mac_addr: MAC address
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All values are stored as strings.
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"""
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try:
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with IPRoute() as ipr:
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links = ipr.link_lookup(ifname=ifname)
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if len(links) == 0:
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raise LookupError("No interfaces known with name `{}'!"
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.format(ifname))
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link_info = ipr.get_links(links)[0]
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except IndexError:
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raise LookupError("Could not get links for interface `{}'"
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.format(ifname))
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mac_addr = link_info.get_attr('IFLA_ADDRESS')
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ip_addrs = get_iface_addrs(mac_addr)
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return {
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'mac_addr': mac_addr,
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'ip_addr': ip_addrs[0],
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'ip_addrs': ip_addrs,
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}
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def ip_addr_to_iface(ip_addr, iface_list):
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"""
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Return an Ethernet interface (e.g. 'eth1') given an IP address.
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Arguments:
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ip_addr -- The IP address as a string
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iface_list -- A map "interface name" -> iface_info, where iface_info
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is another map as returned by net.get_iface_info().
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"""
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# Flip around the iface_info map and then use it to look up by IP addr
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return {
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iface_info['ip_addr']: iface_name
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for iface_name, iface_info in iteritems(iface_list)
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}[ip_addr]
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def get_iface_addrs(mac_addr):
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"""
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return ipv4 addresses for a given macaddress
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input format: "aa:bb:cc:dd:ee:ff"
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"""
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with IPRoute() as ip2:
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# returns index
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[link] = ip2.link_lookup(address=mac_addr)
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# Only get v4 addresses
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addresses = [addr.get_attrs('IFA_ADDRESS')
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for addr in ip2.get_addr(family=socket.AF_INET)
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if addr.get('index', None) == link]
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# flatten possibly nested list
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addresses = list(itertools.chain.from_iterable(addresses))
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return addresses
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def byte_to_mac(byte_str):
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"""
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converts a bytestring into nice hex representation
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"""
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return ':'.join(["%02x" % ord(x) for x in byte_str])
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def get_mac_addr(remote_addr):
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"""
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return MAC address of a remote host already discovered
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or None if no host entry was found
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"""
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with IPRoute() as ip2:
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addrs = ip2.get_neighbours(dst=remote_addr)
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if len(addrs) > 1:
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get_logger('get_mac_addr').warning("More than one device with the "
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"same IP address found. "
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"Picking entry at random")
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if not addrs:
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return None
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return addrs[0].get_attr('NDA_LLADDR')
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