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authorGiga Murphy <giga1699@gmail.com>2023-08-18 00:26:51 +0000
committerGiga Murphy <giga1699@gmail.com>2023-08-18 00:26:51 +0000
commit33b9bc55f9e3d7ce6a5ff447a6b545a96915daf3 (patch)
treee1f8072a5f86d3ad2f69cc819b1f5afb05832cee /src/conf_mode/interfaces-macsec.py
parent65ea7cef9fe922581e286bc539c4dc1e223c9d32 (diff)
downloadvyos-1x-33b9bc55f9e3d7ce6a5ff447a6b545a96915daf3.tar.gz
vyos-1x-33b9bc55f9e3d7ce6a5ff447a6b545a96915daf3.zip
T5447: Initial support for MACsec static keys
Diffstat (limited to 'src/conf_mode/interfaces-macsec.py')
-rwxr-xr-xsrc/conf_mode/interfaces-macsec.py56
1 files changed, 44 insertions, 12 deletions
diff --git a/src/conf_mode/interfaces-macsec.py b/src/conf_mode/interfaces-macsec.py
index 3f86e2638..45fa3f5af 100755
--- a/src/conf_mode/interfaces-macsec.py
+++ b/src/conf_mode/interfaces-macsec.py
@@ -89,18 +89,46 @@ def verify(macsec):
raise ConfigError('Cipher suite must be set for MACsec "{ifname}"'.format(**macsec))
if dict_search('security.encrypt', macsec) != None:
- if dict_search('security.mka.cak', macsec) == None or dict_search('security.mka.ckn', macsec) == None:
- raise ConfigError('Missing mandatory MACsec security keys as encryption is enabled!')
+ # Check that only static or MKA config is present
+ if dict_search('security.static', macsec) != None and (dict_search('security.mka.cak', macsec) != None or dict_search('security.mka.ckn', macsec) != None):
+ raise ConfigError('Only static or MKA can be used!')
- cak_len = len(dict_search('security.mka.cak', macsec))
+ # Logic to check static configuration
+ if dict_search('security.static', macsec) != None:
- if dict_search('security.cipher', macsec) == 'gcm-aes-128' and cak_len != 32:
- # gcm-aes-128 requires a 128bit long key - 32 characters (string) = 16byte = 128bit
- raise ConfigError('gcm-aes-128 requires a 128bit long key!')
+ tx_len = len(dict_search('security.static.tx_key', macsec))
- elif dict_search('security.cipher', macsec) == 'gcm-aes-256' and cak_len != 64:
- # gcm-aes-128 requires a 128bit long key - 64 characters (string) = 32byte = 256bit
- raise ConfigError('gcm-aes-128 requires a 256bit long key!')
+ if dict_search('security.cipher', macsec) == 'gcm-aes-128' and tx_len != 32:
+ # gcm-aes-128 requires a 128bit long key - 32 characters (string) = 16byte = 128bit
+ raise ConfigError('gcm-aes-128 requires a 128bit long key!')
+
+ if dict_search('security.cipher', macsec) == 'gcm-aes-256' and tx_len != 64:
+ # gcm-aes-256 requires a 256bit long key - 64 characters (string) = 32byte = 256bit
+ raise ConfigError('gcm-aes-256 requires a 256bit long key!')
+
+ # Make sure at least one peer is defined
+ if 'peer' not in macsec['security']['static']:
+ raise ConfigError('Must have at least one peer defined for static MACsec')
+
+ # For every enabled peer, make sure a MAC and rx-key is defined
+ for peer, peer_config in macsec['security']['static']['peer'].items():
+ if 'disable' not in peer_config and ('mac' not in peer_config or 'rx_key' not in peer_config):
+ raise ConfigError('Every enabled MACsec static peer must have a MAC address and rx-key defined.')
+
+ # Logic to check MKA configuration
+ else:
+ if dict_search('security.mka.cak', macsec) == None or dict_search('security.mka.ckn', macsec) == None:
+ raise ConfigError('Missing mandatory MACsec security keys as encryption is enabled!')
+
+ cak_len = len(dict_search('security.mka.cak', macsec))
+
+ if dict_search('security.cipher', macsec) == 'gcm-aes-128' and cak_len != 32:
+ # gcm-aes-128 requires a 128bit long key - 32 characters (string) = 16byte = 128bit
+ raise ConfigError('gcm-aes-128 requires a 128bit long key!')
+
+ elif dict_search('security.cipher', macsec) == 'gcm-aes-256' and cak_len != 64:
+ # gcm-aes-256 requires a 256bit long key - 64 characters (string) = 32byte = 256bit
+ raise ConfigError('gcm-aes-256 requires a 256bit long key!')
if 'source_interface' in macsec:
# MACsec adds a 40 byte overhead (32 byte MACsec + 8 bytes VLAN 802.1ad
@@ -115,7 +143,9 @@ def verify(macsec):
def generate(macsec):
- render(wpa_suppl_conf.format(**macsec), 'macsec/wpa_supplicant.conf.j2', macsec)
+ # Only generate wpa_supplicant config if using MKA
+ if dict_search('security.static', macsec) == None:
+ render(wpa_suppl_conf.format(**macsec), 'macsec/wpa_supplicant.conf.j2', macsec)
return None
@@ -142,8 +172,10 @@ def apply(macsec):
i = MACsecIf(**macsec)
i.update(macsec)
- if not is_systemd_service_running(systemd_service) or 'shutdown_required' in macsec:
- call(f'systemctl reload-or-restart {systemd_service}')
+ #Only reload/restart if not using static keys
+ if dict_search('security.static', macsec) == None:
+ if not is_systemd_service_running(systemd_service) or 'shutdown_required' in macsec:
+ call(f'systemctl reload-or-restart {systemd_service}')
return None