diff options
Diffstat (limited to 'python/vyos')
| -rwxr-xr-x | python/vyos/ifconfig/interface.py | 66 | ||||
| -rw-r--r-- | python/vyos/ifconfig/pppoe.py | 4 |
2 files changed, 67 insertions, 3 deletions
diff --git a/python/vyos/ifconfig/interface.py b/python/vyos/ifconfig/interface.py index a1928ba51..53b57a83f 100755 --- a/python/vyos/ifconfig/interface.py +++ b/python/vyos/ifconfig/interface.py @@ -436,6 +436,62 @@ class Interface(Control): """ return self.set_interface('arp_cache_tmo', tmo) + def set_tcp_ipv4_mss(self, mss): + """ + Set IPv4 TCP MSS value advertised when TCP SYN packets leave this + interface. Value is in bytes. + + A value of 0 will disable the MSS adjustment + + Example: + >>> from vyos.ifconfig import Interface + >>> Interface('eth0').set_tcp_ipv4_mss(1340) + """ + iptables_bin = 'iptables' + base_options = f'-A FORWARD -o {self.ifname} -p tcp -m tcp --tcp-flags SYN,RST SYN' + out = self._cmd(f'{iptables_bin}-save -t mangle') + for line in out.splitlines(): + if line.startswith(base_options): + # remove OLD MSS mangling configuration + line = line.replace('-A FORWARD', '-D FORWARD') + self._cmd(f'{iptables_bin} -t mangle {line}') + + cmd_mss = f'{iptables_bin} -t mangle {base_options} --jump TCPMSS' + if mss == 'clamp-mss-to-pmtu': + self._cmd(f'{cmd_mss} --clamp-mss-to-pmtu') + elif int(mss) > 0: + # probably add option to clamp only if bigger: + low_mss = str(int(mss) + 1) + self._cmd(f'{cmd_mss} -m tcpmss --mss {low_mss}:65535 --set-mss {mss}') + + def set_tcp_ipv6_mss(self, mss): + """ + Set IPv6 TCP MSS value advertised when TCP SYN packets leave this + interface. Value is in bytes. + + A value of 0 will disable the MSS adjustment + + Example: + >>> from vyos.ifconfig import Interface + >>> Interface('eth0').set_tcp_mss(1320) + """ + iptables_bin = 'ip6tables' + base_options = f'-A FORWARD -o {self.ifname} -p tcp -m tcp --tcp-flags SYN,RST SYN' + out = self._cmd(f'{iptables_bin}-save -t mangle') + for line in out.splitlines(): + if line.startswith(base_options): + # remove OLD MSS mangling configuration + line = line.replace('-A FORWARD', '-D FORWARD') + self._cmd(f'{iptables_bin} -t mangle {line}') + + cmd_mss = f'{iptables_bin} -t mangle {base_options} --jump TCPMSS' + if mss == 'clamp-mss-to-pmtu': + self._cmd(f'{cmd_mss} --clamp-mss-to-pmtu') + elif int(mss) > 0: + # probably add option to clamp only if bigger: + low_mss = str(int(mss) + 1) + self._cmd(f'{cmd_mss} -m tcpmss --mss {low_mss}:65535 --set-mss {mss}') + def set_arp_filter(self, arp_filter): """ Filter ARP requests @@ -1202,6 +1258,16 @@ class Interface(Control): # checked before self.set_vrf(config.get('vrf', '')) + # Configure MSS value for IPv4 TCP connections + tmp = dict_search('ip.adjust_mss', config) + value = tmp if (tmp != None) else '0' + self.set_tcp_ipv4_mss(value) + + # Configure MSS value for IPv6 TCP connections + tmp = dict_search('ipv6.adjust_mss', config) + value = tmp if (tmp != None) else '0' + self.set_tcp_ipv6_mss(value) + # Configure ARP cache timeout in milliseconds - has default value tmp = dict_search('ip.arp_cache_timeout', config) value = tmp if (tmp != None) else '30' diff --git a/python/vyos/ifconfig/pppoe.py b/python/vyos/ifconfig/pppoe.py index 65575cf99..6acf7d1c7 100644 --- a/python/vyos/ifconfig/pppoe.py +++ b/python/vyos/ifconfig/pppoe.py @@ -17,9 +17,7 @@ from vyos.ifconfig.interface import Interface @Interface.register class PPPoEIf(Interface): - default = { - 'type': 'pppoe', - } + iftype = 'pppoe' definition = { **Interface.definition, **{ |