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Fix FdbUpdater crash when SAI_FDB_ENTRY_ATTR_BRIDGE_PORT_ID attribute missing. #286

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merged 8 commits into from
Aug 30, 2023
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Fix FdbUpdater crash when SAI_FDB_ENTRY_ATTR_BRIDGE_PORT_ID attribute missing. #286

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Fix MIBUpdater crash when SAI_FDB_ENTRY_ATTR_BRIDGE_PORT_ID attribute…
liuh-80 Jul 21, 2023
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Fix code
liuh-80 Jul 21, 2023
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Merge branch 'master' into dev/liuh/improve-midupdater
qiluo-msft Jul 27, 2023
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liuh-80 Jul 27, 2023
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Merge branch 'dev/liuh/improve-midupdater' of https://github.com/liuh…
liuh-80 Jul 27, 2023
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liuh-80 Aug 30, 2023
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10 changes: 8 additions & 2 deletions src/sonic_ax_impl/mibs/ietf/rfc4363.py
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Original file line number Diff line number Diff line change
Expand Up @@ -85,8 +85,14 @@ def update_data(self):
if not ent:
continue

# Example output: oid:0x3a000000000608
bridge_port_id = ent["SAI_FDB_ENTRY_ATTR_BRIDGE_PORT_ID"][6:]
bridge_port_id = ""
try:
# Example output: oid:0x3a000000000608
bridge_port_id = ent["SAI_FDB_ENTRY_ATTR_BRIDGE_PORT_ID"][6:]
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mibs.logger.error("SyncD 'ASIC_DB' includes invalid FDB_ENTRY '{}': failed to get bridge_port_id.".format(fdb_str))
continue
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@qiluo-msft qiluo-msft Aug 1, 2023 •
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continue

If we continue and it will the error message will repeat. In a real device, how frequent is the same error messages? do we need to damp the speed?

Original code will throw a stack in syslog, but not very frequent. #Closed

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@liuh-80 liuh-80 Aug 2, 2023 •
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The log will repeat every 5 seconds, seems not necessary to add more delay:

in https://github.com/sonic-net/sonic-snmpagent/blob/master/src/sonic_ax_impl/main.py

# Background task update frequency ( in seconds )
DEFAULT_UPDATE_FREQUENCY = 5

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Fixed, every FDB only output error log once.

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Thanks for the fix! Further suggestion: flush broken_fdbs in reinit_data() in order to prevent it increasing size forever in case the FDB entries become crazy.

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Fixed


if bridge_port_id not in self.if_bpid_map:
continue
port_id = self.if_bpid_map[bridge_port_id]
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