248 lines
7.8 KiB
Python
248 lines
7.8 KiB
Python
import logging
|
|
import validator.bondethernet as bondethernet
|
|
|
|
class NullHandler(logging.Handler):
|
|
def emit(self, record):
|
|
pass
|
|
|
|
def get_parent_by_name(yaml, ifname):
|
|
""" Returns the sub-interface's parent, or None if the sub-int doesn't exist. """
|
|
if not '.' in ifname:
|
|
return None
|
|
ifname, subid = ifname.split('.')
|
|
subid = int(subid)
|
|
try:
|
|
iface = yaml['interfaces'][ifname]
|
|
return iface
|
|
except:
|
|
pass
|
|
return None
|
|
|
|
def get_by_name(yaml, ifname):
|
|
""" Returns the interface or sub-interface by a given name, or None if it does not exist """
|
|
if '.' in ifname:
|
|
ifname, subid = ifname.split('.')
|
|
subid = int(subid)
|
|
try:
|
|
iface = yaml['interfaces'][ifname]['sub-interfaces'][subid]
|
|
return iface
|
|
except:
|
|
return None
|
|
|
|
try:
|
|
iface = yaml['interfaces'][ifname]
|
|
return iface
|
|
except:
|
|
pass
|
|
return None
|
|
|
|
|
|
def has_sub(yaml, ifname):
|
|
""" Returns True if this interface has sub-interfaces """
|
|
if not 'interfaces' in yaml:
|
|
return False
|
|
|
|
if ifname in yaml['interfaces']:
|
|
iface = yaml['interfaces'][ifname]
|
|
if 'sub-interfaces' in iface and len(iface['sub-interfaces']) > 0:
|
|
return True
|
|
return False
|
|
|
|
|
|
def has_address(yaml, ifname):
|
|
""" Returns True if this interface or sub-interface has one or more addresses"""
|
|
if not 'interfaces' in yaml:
|
|
return False
|
|
|
|
if '.' in ifname:
|
|
ifname, subid = ifname.split('.')
|
|
subid = int(subid)
|
|
try:
|
|
if len(yaml['interfaces'][ifname]['sub-interfaces'][subid]['addresses']) > 0:
|
|
return True
|
|
except:
|
|
pass
|
|
return False
|
|
|
|
try:
|
|
if len(yaml['interfaces'][ifname]['addresses']) > 0:
|
|
return True
|
|
except:
|
|
pass
|
|
return False
|
|
|
|
|
|
def is_bond_member(yaml, ifname):
|
|
""" Returns True if this interface is a member of a BondEthernet """
|
|
if not 'bondethernets' in yaml:
|
|
return False
|
|
|
|
for bond, iface in yaml['bondethernets'].items():
|
|
if not 'interfaces' in iface:
|
|
continue
|
|
if ifname in iface['interfaces']:
|
|
return True
|
|
return False
|
|
|
|
|
|
def has_lcp(yaml, ifname):
|
|
""" Returns True if this interface or sub-interface has an LCP"""
|
|
if not 'interfaces' in yaml:
|
|
return False
|
|
|
|
if '.' in ifname:
|
|
ifname, subid = ifname.split('.')
|
|
subid = int(subid)
|
|
try:
|
|
if len(yaml['interfaces'][ifname]['sub-interfaces'][subid]['lcp']) > 0:
|
|
return True
|
|
except:
|
|
pass
|
|
return False
|
|
|
|
try:
|
|
if len(yaml['interfaces'][ifname]['lcp']) > 0:
|
|
return True
|
|
except:
|
|
pass
|
|
return False
|
|
|
|
|
|
def valid_encapsulation(yaml, sub_ifname):
|
|
try:
|
|
ifname, subid = sub_ifname.split('.')
|
|
subid = int(subid)
|
|
sub_iface = yaml['interfaces'][ifname]['sub-interfaces'][subid]
|
|
except:
|
|
return False
|
|
|
|
if not 'encapsulation' in sub_iface:
|
|
return True
|
|
|
|
encap = sub_iface['encapsulation']
|
|
if 'dot1ad' in encap and 'dot1q' in encap:
|
|
return False
|
|
if 'inner-dot1q' in encap and not ('dot1ad' in encap or 'dot1q' in encap):
|
|
return False
|
|
if 'exact-match' in encap and encap['exact-match'] == False and is_l3(yaml, sub_ifname):
|
|
return False
|
|
|
|
return True
|
|
|
|
|
|
def is_l3(yaml, ifname):
|
|
""" Returns True if the interface exists and has either an LCP or an address """
|
|
iface = get_by_name(yaml, ifname)
|
|
if not iface:
|
|
return False
|
|
if has_lcp(yaml, ifname):
|
|
return True
|
|
if has_address(yaml, ifname):
|
|
return True
|
|
return False
|
|
|
|
def get_lcp(yaml, ifname):
|
|
""" Returns the LCP of the interface. If the interface is a sub-interface with L3
|
|
enabled, synthesize it based on its parent, using smart QinQ syntax.
|
|
Return None if no LCP can be found. """
|
|
|
|
iface = get_by_name(yaml, ifname)
|
|
parent_iface = get_parent_by_name(yaml, ifname)
|
|
if 'lcp' in iface:
|
|
return iface['lcp']
|
|
if not is_l3(yaml, ifname):
|
|
return None
|
|
if not 'lcp' in parent_iface:
|
|
return None
|
|
if not 'encapsulation' in iface:
|
|
if not '.' in ifname:
|
|
## Not a sub-int and no encap? Should not happen
|
|
return None
|
|
ifname, subid = ifname.split('.')
|
|
subid = int(subid)
|
|
return "%s.%d" % (parent_iface['lcp'], subid)
|
|
|
|
dot1q = 0
|
|
dot1ad = 0
|
|
inner_dot1q = 0
|
|
if 'dot1q' in iface['encapsulation']:
|
|
dot1q = iface['encapsulation']['dot1q']
|
|
elif 'dot1ad' in iface['encapsulation']:
|
|
dot1ad = iface['encapsulation']['dot1ad']
|
|
if 'inner-dot1q' in iface['encapsulation']:
|
|
inner_dot1q = iface['encapsulation']['inner-dot1q']
|
|
if inner_dot1q and dot1ad:
|
|
lcp = "%s.%d.%d" % (parent_iface['lcp'], dot1ad, inner_dot1q)
|
|
elif inner_dot1q and dot1q:
|
|
lcp = "%s.%d.%d" % (parent_iface['lcp'], dot1q, inner_dot1q)
|
|
elif dot1ad:
|
|
lcp = "%s.%d" % (parent_iface['lcp'], dot1ad)
|
|
elif dot1q:
|
|
lcp = "%s.%d" % (parent_iface['lcp'], dot1q)
|
|
else:
|
|
return None
|
|
return lcp
|
|
|
|
def get_mtu(yaml, ifname):
|
|
""" Returns MTU of the interface. If it's not set, return the parent's MTU, and
|
|
return 1500 if no MTU was set on the sub-int or the parent."""
|
|
iface = get_by_name(yaml, ifname)
|
|
parent_iface = get_parent_by_name(yaml, ifname)
|
|
try:
|
|
return iface['mtu']
|
|
return parent_iface['mtu']
|
|
except:
|
|
pass
|
|
return 1500
|
|
|
|
|
|
def validate_interfaces(args, yaml):
|
|
result = True
|
|
msgs = []
|
|
logger = logging.getLogger('vppcfg.validator')
|
|
logger.addHandler(NullHandler())
|
|
|
|
if not 'interfaces' in yaml:
|
|
return result, msgs
|
|
|
|
for ifname, iface in yaml['interfaces'].items():
|
|
logger.debug("interface %s" % iface)
|
|
if ifname.startswith("BondEthernet") and not bondethernet.get_by_name(yaml, ifname):
|
|
msgs.append("interface %s does not exist in bondethernets" % ifname)
|
|
result = False
|
|
|
|
iface_mtu = get_mtu(yaml, iface)
|
|
iface_lcp = has_lcp(yaml, ifname)
|
|
iface_address = has_address(yaml, ifname)
|
|
|
|
if iface_address and not iface_lcp:
|
|
msgs.append("interface %s has adddress(es) but no LCP" % ifname)
|
|
result = False
|
|
|
|
if has_sub(yaml, ifname):
|
|
for sub_id, sub_iface in yaml['interfaces'][ifname]['sub-interfaces'].items():
|
|
sub_ifname = "%s.%d" % (ifname, sub_id)
|
|
logger.debug("sub-interface %s" % sub_iface)
|
|
sub_lcp = get_lcp(yaml, sub_ifname)
|
|
if sub_lcp and len(sub_lcp)>15:
|
|
msgs.append("sub-interface %s has LCP with too long name '%s'" % (sub_ifname, sub_lcp))
|
|
result = False
|
|
if 'mtu' in sub_iface:
|
|
if sub_iface['mtu'] > iface_mtu:
|
|
msgs.append("sub-interface %s has MTU %d higher than parent MTU %d" % (sub_ifname, sub_iface['mtu'], iface_mtu))
|
|
result = False
|
|
if has_lcp(yaml, sub_ifname):
|
|
if not iface_lcp:
|
|
msgs.append("sub-interface %s has LCP but %s does not have LCP" % (sub_ifname, ifname))
|
|
result = False
|
|
if has_address(yaml, sub_ifname):
|
|
## The sub_iface lcp is not required: it can be derived from the iface_lcp, which has to be set
|
|
if not iface_lcp:
|
|
msgs.append("sub-interface %s has address(es) but %s does not have LCP" % (sub_ifname, ifname))
|
|
result = False
|
|
if not valid_encapsulation(yaml, sub_ifname):
|
|
msgs.append("sub-interface %s has invalid encapsulation" % (sub_ifname))
|
|
result = False
|
|
|
|
return result, msgs
|