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>

rename:
fill -> get
fill_tics -> get_tics
fill_date -> get_date
fill_asn -> get_value
fill_struct_pp_asn -> get_pp
fill_struct_p_asn -> get_p
fill_int32_saturate -> get_i32sat
fill_int32_saturate_pp -> get_i32sat_pp

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

By this 32bytes are saved.

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

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

It will be possible to set via SNMP system name when SNMP SET is implemented.

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>

Respond with SNMP_ERR_GENERR for versions never than 2.

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

Now all snmp walks should be possible

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>

Add object with wrpc's version.
For example:
WR-WRPC-MIB::wrWrpcMIB.3.1.0 = STRING: "wrpc-v3.0-161-g4d63c77-dirty"

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

WR-WRPC-MIB.txt is now for testing purposes, it will change.

So far MIB contains following objects:
WR-WRPC-MIB::wrpcPtpRTTHR.0
WR-WRPC-MIB::wrpcPtpDeltaMs.0
WR-WRPC-MIB::wrpcPtpCurSetpoint.0
WR-WRPC-MIB::wrpcNicTX.0
WR-WRPC-MIB::wrpcNicRX.0

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>

Convert function fill_int32_saturate to take pointer to the data and asn.
The interpretation of pointer in struct snmp_oid is done in
fill_int32_saturate_pp.

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

From now, struct snmp_oid contais the pointer (p) which is up to the callback
function to know how to interpret the pointer.

It is easier to handle **data and *data in declaration of the oid_array.

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

From now function adding the data to snmp packet (fill_asn), just takes pointer
to the data and asn type. Interpretation of a pointer in struct snmp_oid is now
up to the callback function.

It makes easier to handle different data types.

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

objects:
--oid_wrpcNicTX
--oid_wrpcNicRX

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

add:
--oid_wrsPtpServoState
--oid_wrsPtpServoStateN
--oid_wrsPtpClockOffsetPsHR
--oid_wrsPtpSkew
--oid_wrpcPtpRTTHR
--oid_wrpcPtpDeltaMs
--oid_wrpcPtpCurSetpoint

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

Used to convert 64bit to 32bit. It is better to saturate 32bit during
conversion than just passing 32 LSB bits.

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

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

snmp_get_next works only when requesting oid is valid. Otherwise it fails to
find next entry.

Due to the above the snmpwalk works only when the walk is started from
the existing oid. Since snmp walk scans only oids in the current branch,
there was a need to create a special oid .1.3.

$ snmpwalk -On -c public -v 1 192.168.1.20 1.3
.1.3.6.1.2.1.1.5.0 = STRING: "wrc"
.1.3.6.1.2.1.25.1.1.0 = Timeticks: (792773) 2:12:07.73
.1.3.6.1.2.1.25.1.2.0 = Hex-STRING: 07 B2 00 01 05 00 00 00
.1.3.6.1.4.1.96.100.7.5.1.15.1 = Counter32: 445
.1.3.6.1.4.1.96.100.7.5.1.16.1 = INTEGER: 10
.1.3.6.1.4.1.96.100.7.5.1.17.1 = INTEGER: 174810
.1.3.6.1.4.1.96.100.7.5.1.18.1 = INTEGER: 191115
.1.3.6.1.4.1.96.100.7.5.1.19.1 = INTEGER: 157655
Timeout: No Response from 192.168.1.20

NOTE: Timeout message appears becasue there is no responce from node when
wrong packet is sent.

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

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

Move SNMP just after syslog.

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

--add defines of ASN types
--add 5 object from wrsPtpTable

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

Alessandro Rubini authored 9 years ago and Adam Wujek committed 8 years ago

The "community" string is public. We have tree items only: the host
name, the date and uptime.

The code is designed to make it simple any addition. But we only have
snmpget support, not snmpwak (i.e. "get next" query).

This is run on an host build (CONFIG_HOST_PROCESS) where the time and
date are not related to the real world:

   # snmpget -v 1 -c public 192.168.16.1 .1.3.6.1.2.1.1.5.0
   SNMPv2-MIB::sysName.0 = STRING: wrc
   # snmpget -v 1 -c public 192.168.16.1 .1.3.6.1.2.1.25.1.2.0
   HOST-RESOURCES-MIB::hrSystemDate.0 = STRING: 1970-0-1,19:52:34.0
   # snmpget -v 1 -c public 192.168.16.1 .1.3.6.1.2.1.25.1.2.0
   HOST-RESOURCES-MIB::hrSystemDate.0 = STRING: 1970-0-1,19:53:2.0
   # snmpget -v 1 -c public 192.168.16.1 .1.3.6.1.2.1.25.1.1.0
   [...] hrSystemUptime.0 = Timeticks: (94193300) 10 days, 21:38:53.00

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Alessandro Rubini authored 9 years ago and Adam Wujek committed 8 years ago

/var/lib/mibs/ietf/SNMPv2-TC

DateAndTime ::= TEXTUAL-CONVENTION
    DISPLAY-HINT "2d-1d-1d,1d:1d:1d.1d,1a1d:1d"
    STATUS       current
    DESCRIPTION
            "A date-time specification.

            field  octets  contents                  range
            -----  ------  --------                  -----
              1      1-2   year*                     0..65536
              2       3    month                     1..12
              3       4    day                       1..31
              4       5    hour                      0..23
              5       6    minutes                   0..59
              6       7    seconds                   0..60
                           (use 60 for leap-second)
              7       8    deci-seconds              0..9
              8       9    direction from UTC        '+' / '-'
              9      10    hours from UTC*           0..13
             10      11    minutes from UTC          0..59

            * Notes:
            - the value of year is in network-byte order
            - daylight saving time in New Zealand is +13

            For example, Tuesday May 26, 1992 at 1:30:15 PM EDT would be
            displayed as:

                             1992-5-26,13:30:15.0,-4:0

            Note that if only local time is known, then timezone
            information (fields 8-10) is not present."
    SYNTAX       OCTET STRING (SIZE (8 | 11))

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Additionally use type checking

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

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

(one is just a comment update: most of that stanza was not true any more)

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

A WR socket registers using a specific mac address and the receiving code
uses the mac address to match the frame.  This is going to be a problem
with the new PTP code, as pdelay frames use a different mcast mac address.
Moreover, if we go to UDP, stuff gets worse.

Packet filter rules are already in place for the new mac addresses, and
we now need to relax the checking in the software stack.

As a side effect, we avoid a number of broadcast frames, because wrpc-sw
now replies to unicast ARP requests.

What happened before:

   16:27:07 00:0b:ab:7c:8e:4a > 00:26:7b:00:04:18 who-has ...107 tell ...200
   16:27:08 00:0b:ab:7c:8e:4a > 00:26:7b:00:04:18 who-has ...107 tell ...200
   16:27:09 00:0b:ab:7c:8e:4a > 00:26:7b:00:04:18 who-has ...107 tell ...200
   16:27:12 00:0b:ab:7c:8e:4a > ff:ff:ff:ff:ff:ff who-has ...107 tell ...200
   16:27:12 00:26:7b:00:04:18 > 00:0b:ab:7c:8e:4a ...107 is-at 00:26:7b:00:04:18

what happens now:

   16:42:27 00:0b:ab:7c:8e:4a > 00:26:7b:00:04:18 who-has ...107 tell ...200
   16:42:27 00:26:7b:00:04:18 > 00:0b:ab:7c:8e:4a ...107 is-at 00:26:7b:00:04:18

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This is incompatible with the previous implementation

 - sequence number is 32 bits
 - frames are 1,2,3 not 0,1,2 (so to be *more* incompatible)
 - no fake latency values are printed if frames are lost
 - the message is one line instead of two, and cleaner too
 - the sender reminds it's sending every 10s.

The receiver's messages now include the sequence number, so we can
match different receivers on a network.  Also, The sender's message
report both TAI and sequence, so we can related frames to the time of
day.

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This adds a tool to check the latency in the network. It is selected
at build time (config) time.  If you select CONFIG_LATENCY_PROBE you
are then asked for a CONFIG_LATENCY_ETHTYPE.

The sender node sends three frames, as broadcast in that ethertype
within the current vlan (or no vlan).  The first frame is at priority
7, the second at priority 6, and the third includes the egress
timestamps for the former ones. Each group has a sequence number
and group identifier.

If the tool is built in wrc.bin, every node acts as a receiver. To
enable a sender issuing the set of frames every 5 seconds, use "ltest 5".
To disable use "ltest 0".

The receiver prints the measured latency, and warns if it receives
frames that are not in the proper order, using the sequence and frame
type fields.

This is a successful run crossing two wr switches:

    latency prio7: 5142.775
    latency prio6: 4998.775
    latency prio7: 4822.773
    latency prio6: 5142.773
    latency prio7: 5142.771
    latency prio6: 5286.771

Later on, we'll make the thing less verbose, and we'll have threshold
to signal a problem if the network went slow. Currently we just print
all collected data.

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This is used by the latency measurement, to send high-priority frames

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Although we love to build-test stuff and discard at link time, as soon
as we move tasks to be sections, we need to avoid building the file of
the task if not configured in.  This means lib/arp.c and lib/ipv4.c.

But, for consistency, avoid building icmp.c and bootp.c as well.
The alternative, which is ifconfig'ing the task itself results in
warnings like "'ipv4_init' defined but not used".

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>