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[Dynamic Buffer Calc] Avoid creating lossy PG for admin down ports during initialization #1776

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merged 5 commits into from
Jun 28, 2021
Merged

[Dynamic Buffer Calc] Avoid creating lossy PG for admin down ports during initialization #1776

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5557914
Don't create lossy PG for admin down ports during initialization
stephenxs Jun 8, 2021
e98fea5
Add checks to admin down test
stephenxs Jun 10, 2021
ce511f0
Fix review comments
stephenxs Jun 23, 2021
ece0869
Use APPL_DB as the source of initial information of m_port_ready_list…
stephenxs Jun 27, 2021
7af4d12
Fix vs test error
stephenxs Jun 27, 2021
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22 changes: 19 additions & 3 deletions cfgmgr/buffermgrdyn.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1052,6 +1052,12 @@ task_process_status BufferMgrDynamic::doUpdatePgTask(const string &pg_key, const

case PORT_ADMIN_DOWN:
SWSS_LOG_NOTICE("Skip setting BUFFER_PG for %s because the port is administratively down", port.c_str());
if (!m_portInitDone)
{
// In case the port is admin down during initialization, the PG will be removed from the port,
// which effectively notifies bufferOrch to add the item to the m_ready_list
m_applBufferPgTable.del(pg_key);
}
break;

default:
Expand Down Expand Up @@ -1862,9 +1868,19 @@ task_process_status BufferMgrDynamic::handleOneBufferPgEntry(const string &key,
}
else
{
SWSS_LOG_NOTICE("Inserting BUFFER_PG table entry %s into APPL_DB directly", key.c_str());
m_applBufferPgTable.set(key, fvVector);
bufferPg.running_profile_name = bufferPg.configured_profile_name;
port_info_t &portInfo = m_portInfoLookup[port];
if (PORT_ADMIN_DOWN != portInfo.state)
{
SWSS_LOG_NOTICE("Inserting BUFFER_PG table entry %s into APPL_DB directly", key.c_str());
m_applBufferPgTable.set(key, fvVector);
bufferPg.running_profile_name = bufferPg.configured_profile_name;
}
else if (!m_portInitDone)
{
// In case the port is admin down during initialization, the PG will be removed from the port,
// which effectively notifies bufferOrch to add the item to the m_ready_list
m_applBufferPgTable.del(key);
}
}

if (!bufferPg.configured_profile_name.empty())
Expand Down
6 changes: 3 additions & 3 deletions cfgmgr/buffermgrdyn.h
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Expand Up @@ -79,12 +79,12 @@ typedef struct {
} buffer_pg_t;

typedef enum {
// Port is admin down. All PGs programmed to APPL_DB should be removed from the port
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PORT_ADMIN_DOWN,
// Port is under initializing, which means its info hasn't been comprehensive for calculating headroom
PORT_INITIALIZING,
// All necessary information for calculating headroom is ready
PORT_READY,
// Port is admin down. All PGs programmed to APPL_DB should be removed from the port
PORT_ADMIN_DOWN
PORT_READY
} port_state_t;

typedef struct {
Expand Down
14 changes: 13 additions & 1 deletion tests/test_buffer_dynamic.py
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Expand Up @@ -548,6 +548,9 @@ def test_sharedHeadroomPool(self, dvs, testlog):
def test_shutdownPort(self, dvs, testlog):
self.setup_db(dvs)

lossy_pg_reference_config_db = '[BUFFER_PROFILE|ingress_lossy_profile]'
lossy_pg_reference_appl_db = '[BUFFER_PROFILE_TABLE:ingress_lossy_profile]'

# Startup interface
dvs.runcmd('config interface startup Ethernet0')

Expand All @@ -558,14 +561,23 @@ def test_shutdownPort(self, dvs, testlog):

# Shutdown port and check whether all the PGs have been removed
dvs.runcmd("config interface shutdown Ethernet0")
self.app_db.wait_for_deleted_entry("BUFFER_PG_TABLE", "Ethernet0:0")
self.app_db.wait_for_deleted_entry("BUFFER_PG_TABLE", "Ethernet0:3-4")
self.app_db.wait_for_deleted_entry("BUFFER_PROFILE", expectedProfile)

# Add another PG when port is administratively down
# Add extra lossy and lossless PGs when a port is administratively down
self.config_db.update_entry('BUFFER_PG', 'Ethernet0|1', {'profile': lossy_pg_reference_config_db})
self.config_db.update_entry('BUFFER_PG', 'Ethernet0|6', {'profile': 'NULL'})

# Make sure they have not been added to APPL_DB
time.sleep(30)
self.app_db.wait_for_deleted_entry("BUFFER_PG_TABLE", "Ethernet0:1")
self.app_db.wait_for_deleted_entry("BUFFER_PG_TABLE", "Ethernet0:6")

# Startup port and check whether all the PGs haved been added
dvs.runcmd("config interface startup Ethernet0")
self.app_db.wait_for_field_match("BUFFER_PG_TABLE", "Ethernet0:0", {"profile": lossy_pg_reference_appl_db})
self.app_db.wait_for_field_match("BUFFER_PG_TABLE", "Ethernet0:1", {"profile": lossy_pg_reference_appl_db})
self.app_db.wait_for_field_match("BUFFER_PG_TABLE", "Ethernet0:3-4", {"profile": "[BUFFER_PROFILE_TABLE:" + expectedProfile + "]"})
self.app_db.wait_for_field_match("BUFFER_PG_TABLE", "Ethernet0:6", {"profile": "[BUFFER_PROFILE_TABLE:" + expectedProfile + "]"})

Expand Down