Add the mini SNMP SNMP responder to the WRPC.

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Tread as error when 0 is returned from the set_value function.

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Copy the pointer even it is not used now

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Move wrpcSfpEntry and wrpcTemperatureEntry to be a part of limb not a twig.

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Add support for ASN_UNSIGNED to set_value and get_value.
Also return 0 if ASN not supported.

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Fix problems reported by smilint (smilint lib/WR-WRPC-MIB.txt)

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Add an object to restart PTP via SNMP (wrpcPtpConfigRestart).
Also don't restart ppsi after SFP updates in the flash.

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

When snmpset is performed on not existing or read only OID, then response
packet does not contain to-be-set value. Due to that, returning packet is
shorter. It is necessary to recalculate sizes of the fields inside the response
packet.

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Pass returned value from twig functions (group and table) in the response.
Now setting read only values return proper error (SNMP_ERR_READONLY).

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

SNMPv1 does not support counter64.
Add tests for that too.

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

spec_snmp_defconfig -- config for spec with SNMP responder enabled
spec_snmp_set_verbose_defconfig -- config for spec with enabled SNMP
    (SNMP responder, SETs, verbose), fake temperatures, SDB storage

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

"sfp detect" was incorporated into "sfp match".

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

We don't use these functions.

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

We revert this commit, since we decided to support objects only from our own
MIB. So we don't need this this specific time format.

So, revert the commit:
util: add the perverse SNMP 'string' time format

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Restart ppsi after updating deltas or alpha.
Update can be in memory or in database, restart ppsi in both cases.

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Tests use bats (https://github.com/sstephenson/bats

) for testing.
Clone bat's repo, checkout commit 03608115

To test invoke "make TARGET_IP=x.x.x.x"

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Add wrpcSfpTable, which dumps the SFPs databse

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

When returning error make sure there is an ASN_NULL at the end of SNMP packet.

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Requests produced by net-snmp's snmpget and snmpgetnext usually contains
4 byte request ID, but sometimes it is only 3 bytes.
When request ID is below 2^24 sometimes it is send as 3 bytes, sometimes as
4 byte value.

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Split the OIDs into limb and twig parts.
Twig part can be interpreted as a groups or a table.
For each limb (group or table) there is an array with twigs (OIDs within group
or table).
When the limb part is matched, then the group or table function is called for
the twigs part.

Additionally:
--Add the table with temperatures (wrpcTemperatureTable). Any number of
  sensors is supported.
--Add wrpcTemperatureTable to the MIB
--print_oid_verbose can now print parts of OIDs

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Write to the flash, if failed return corresponding error.

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Possible to read/write:
-- wrpcPtpConfigApply
-- wrpcPtpConfigDeltaTx
-- wrpcPtpConfigDeltaRx
-- wrpcPtpConfigAlpha
-- wrpcPtpConfigSfpPn

setting a value writeToMemoryCurrentSfp to the wrpcPtpConfigApply will update sfp info in memory.
For now it is necessary to restart ptp to reload new sfp information.

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

add:
-- wrpcPortLinkStatus
-- wrpcPortSfpPn
-- wrpcPortSfpInDB
-- wrpcPortInternalTX
-- wrpcPortInternalRX

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Add:
--wrpcPtpServoStateN(5)
--wrpcPtpClockOffsetPsHR(8)
--wrpcPtpSkew(9)
--wrpcPtpRTT(10)
--wrpcPtpServoUpdates(12)
--wrpcPtpServoUpdateTime(13)
--wrpcPtpDeltaTxM(14)
--wrpcPtpDeltaRxM(15)
--wrpcPtpDeltaTxS(16)
--wrpcPtpDeltaRxS(17)
--wrpcPtpServoStateErrCnt(18)
--wrpcPtpClockOffsetErrCnt(19)
--wrpcPtpRTTErrCnt(20)
--wrpcPtpAsymmetry(22)
--wrpcPtpTX(23)
--wrpcPtpRX(24)
--wrpcPtpAlpha(26)

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

add:
-- wrpcSpllMode
-- wrpcSpllIrqCnt
-- wrpcSpllSeqState
-- wrpcSpllAlignState
-- wrpcSpllHlock
-- wrpcSpllMlock
-- wrpcSpllHY
-- wrpcSpllMY
-- wrpcSpllDelCnt

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

add:
-- wrpcDateTAI
-- wrpcDateTAIString
-- wrpcSystemUptime

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

They will be implemented with different OIDs.

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Add "--x " to all objects. "--x " will be removed when particular object
is implemented.

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Mostly spacing and indentation.

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

adding uint8_t data_size; to struct snmp_oid does not change memory usage
due to memory alignment.

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>