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333 Commits

Author SHA1 Message Date
Jeremy Lakeman
81afc42d8b Major refactor to packet queuing and delivery in preparation for unicast link tracking. 
Unicast tests broken
 2013-08-09 09:37:08 +09:30
Jeremy Lakeman
d47d1b1684 Split network destination structure from interface structure 2013-08-05 14:35:49 +09:30
Jeremy Lakeman
6645feb0d8 Use %zu format for size_t & off_t types 2013-07-19 22:31:13 +09:30
gardners
d21bb8338f add missing casts for formatted output strings (was generating 
warnings on Linux).
 2013-07-19 20:04:15 +09:30
Jeremy Lakeman
49e0286b43 Reduce packet header size for point-to-point links 
- new interface.x.point_to_point config
- disable local echo for point to point dummy interfaces
- add ME and YOU sid abbreviation codes after learning other sid
 2013-07-16 15:38:00 +09:30
Jeremy Lakeman
aa87168d7d Add per-interace dump of sent and received bytes 2013-07-15 15:27:41 +09:30
Jeremy Lakeman
3855ff35c4 Clean up string formatting for 64bit compilation 2013-07-15 09:59:24 +09:30
Jeremy Lakeman
9550dbce9d Improve debugging of received stream bytes 2013-06-24 16:10:24 +09:30
Jeremy Lakeman
0736e6b9e8 Reduce the delay for reading from dummy interfaces during rhizome transfers 2013-06-20 11:10:02 +09:30
Jeremy Lakeman
61a958fd34 Avoid setting alarms with deadlines that have already elapsed 2013-06-19 15:36:18 +09:30
Jeremy Lakeman
3e57add9ca Fix, initialise read / write handles so we don't close fd=0 2013-06-19 12:05:56 +09:30
Jeremy Lakeman
ba91996696 Don't log my own rejected packets 2013-06-14 10:42:43 +09:30
Jeremy Lakeman
c0b31a2774 Report packet acks, make routing decisions based on dropped packets 2013-05-08 11:37:02 +09:30
Jeremy Lakeman
dd03014b44 Choose the best link from a neighbour 2013-05-02 14:29:31 +09:30
Jeremy Lakeman
9ee09e36a0 Replace old routing engine with new link state engine 2013-05-02 14:29:28 +09:30
Jeremy Lakeman
559b270966 Only compare routes that have all links via the same neighbour 2013-04-29 17:07:36 +09:30
gardners
3e7de24bdf added uartpbs and ctsrts config options to packet radio serial 
interface configuration options.
 2013-04-26 15:16:51 +09:30
Andrew Bettison
ddfcc60331 Log WARNing not ERROR for missing dummy interface file 2013-04-15 16:30:07 +09:30
gardners
2252fdcaa7 created tool for automatically finding IN()s without matching 
OUT()s or where return() is used instead of RETURN().
Added OUT() to end of all functions using IN() that lacked it to
make it easier to statically analyse this invariant.
Fixed several return instead of RETURNs detected through use of
this tool. #49
 2013-02-20 16:18:56 +10:30
gardners
f465f3a9ee Add lots of profiling to assist in debugging 
- made some debug output conditional.
- make it possible to debug slip decoding without getting swamped by other output.
- Improve reporting of unnamed schedule() calls.
- always collect performance statistics, and report on any excess
  use (>1sec in every 3), even if debug.timing is not enabled.
- include file size information in Rhizome transfer messages.
- reduce output when debug.rhizome_rx is set.
 2013-02-20 15:36:30 +10:30
gardners
80168e3530 Improve debug logging 
- add debug.trace to help track down segfaults
- warn about alarms without names (which are then hard to track down).
 2013-02-20 15:36:30 +10:30
gardners
e551017896 push profiling down deeper into rhizome_fetch_poll()'s children. 2013-02-20 15:36:29 +10:30
Jeremy Lakeman
eeb7fb7f9b Reinitialise an interface when it comes back up 2013-02-20 15:36:28 +10:30
gardners
610f7acdf8 fixed test for malformed packets. 2013-02-20 15:36:27 +10:30
gardners
80a5feb76a show rejected packets iff debug.rejecteddata set 2013-02-20 15:36:26 +10:30
Jeremy Lakeman
2193d8fb74 Process incoming stream packets 2013-02-20 15:36:25 +10:30
gardners
4d674d06b9 improved debugging arrangements for packetradio. 2013-02-20 15:36:25 +10:30
gardners
5b26cabee3 fixed bugs in UPPER7 SLIP encapsulation. 
Improved debugging of the same.
 2013-02-20 15:36:25 +10:30
gardners
fea06932e5 added new slip.c with 7-bit-high packet encapsulation, packet length 
and CRC32.
Also added in-line RSSI report reception for RFD900 radios.
 2013-02-20 15:36:24 +10:30
gardners
a42c685715 don't complain if packet radio interface doesn't support fseek(). 2013-02-20 15:36:24 +10:30
Jeremy Lakeman
45efb3f899 Add more raw options to serial interface 2013-02-20 15:36:24 +10:30
Jeremy Lakeman
6d9bbe2e2c Refactor interface handling to separate encapsulation from stream type 2013-02-20 15:36:23 +10:30
Jeremy Lakeman
c7caec488a Don't aggregate packets together on radio links 2013-02-20 15:36:23 +10:30
Jeremy Lakeman
84ad4debfa Throttle serial radio devices when tx buffer is in use 2013-02-20 15:36:22 +10:30
gardners
37ed7694bd added safety catch for null message field. 
note that debug.packettx seems to be broken.
 2013-02-20 15:36:21 +10:30
gardners
b70aa9b8c6 fixed problems with interface ticking on packetradio interfaces. 
still crashes and burns.
 2013-02-20 15:36:21 +10:30
gardners
a4bfdc6c75 fixed serial port reading and interface setup bugs. 
now crashes when trying to tick packet radio interface.
 2013-02-20 15:36:20 +10:30
gardners
7287a2d599 add hook for transmitting packet via packet radio interface. 
make serial port non-blocking (which for some reason has also
killed our ability to read from it :/).
 2013-02-20 15:36:20 +10:30
gardners
0268ccd21a setup serial port mode when opening packet radio interface. 
(now reads bytes over serial line)
 2013-02-20 15:36:20 +10:30
gardners
190a5e693f refactored packet radio code mostly into separate file. 
began writing stateful packet decoder.
 2013-02-20 15:36:20 +10:30
gardners
70af7fae0d initial work on implementing packet radio interface. 
can open and read from TTY.
doesn't do anything with the data yet.
doesn't write proper packets to the interface yet.
doesn't use bitrate config option yet.
 2013-02-20 15:36:19 +10:30
Andrew Bettison
cfe4da687c New hton_in_addr() function 
To silence warnings in struct in_addr assignments on Solaris, whose struct
in_addr definition is a monstrosity.
 2013-02-05 16:56:37 +10:30
Jeremy Lakeman
b35c1aca43 Specify that unicast traffic should use unicast UDP packets 2013-01-29 11:57:13 +11:00
Jeremy Lakeman
9a78e16625 Use payload queue for periodic route advertisements 2012-12-19 12:36:28 +10:30
Jeremy Lakeman
82db15db5b Use any packet as a self-announce 
Stop sending OF_TYPE_SELFANNOUNCE
Deprecate OF_TYPE_DATA_VOICE
Tweak payload priorities
Don't allow client applications to send high priority payloads
 2012-12-16 10:09:29 +10:30
Jeremy Lakeman
e517e3a59e Add per-interface packet transmit limits 2012-12-14 17:07:28 +10:30
Jeremy Lakeman
de8ffd7ea9 Mark all subscribers as unreachable when the network goes down 2012-12-12 10:01:08 +10:30
Andrew Bettison
5985df751d Overhaul debug flags 
Replace debugflags_t and DEBUG_XXX bit masks with config schema "debug.xxx"
entries.

No more support for "debug.all".
 2012-12-11 15:59:46 +10:30
Jeremy Lakeman
bc91b05d7f Fix interface matching 2012-12-10 16:15:37 +10:30
Jeremy Lakeman
c3f573ea7f Add more messages, wait for directory service to start first 
And make sure gaps in sockaddr_in are zeroed.
 2012-12-10 14:42:57 +10:30
Jeremy Lakeman
2932544eb8 Add IPv4 addresses to dummy interface 2012-12-10 14:06:25 +10:30
Jeremy Lakeman
78aa01ad30 Add stun lookup messages 2012-12-10 14:05:57 +10:30
Andrew Bettison
8425882ffc Merge branch 'newconfig' into 'master' 
Conflicts:
	commandline.c
	conf.h
	dataformats.c
	log.h
	overlay_address.c
	overlay_interface.c
	packetformats.c
	rhizome.c
	serval.h
	tests/directory_service
	vomp_console.c
 2012-12-07 14:09:55 +10:30
Andrew Bettison
b497c88d9d Fix 'directory_service' test failures 
New configuration schema.
 2012-12-05 15:47:14 +10:30
Jeremy Lakeman
3dfd64f4da Add manually triggered network scan command 2012-12-05 15:13:47 +10:30
Jeremy Lakeman
5c7eb4a594 Add unicast probe packets 
Probe directory service instead of assuming that it is always reachable
Fix directory service and routing tests
 2012-12-04 14:47:57 +10:30
Andrew Bettison
caa209fc1d Integrate new config into servald 
Not passing any tests yet, but compiles and links and simple uses do not
SEGV.
 2012-12-04 14:12:28 +10:30
Jeremy Lakeman
54f9d9b0e0 Rely on please explain, don't send too many full sids 2012-11-28 15:44:39 +10:30
Jeremy Lakeman
3d14e2f3db Hide more information about packet headers 2012-11-28 15:43:56 +10:30
Andrew Bettison
c4b90a108b Fix compile warnings on Solaris (gcc 4.4) 2012-11-28 14:13:25 +10:30
Andrew Bettison
494a766b9e Improve str.h and str.c 
Move alloca_tohex() from serval.h into str.h so it can be used stand-alone.

Rename str_to_ll_scaled() to str_to_int64_scaled().  Add str_to_uint64_scaled()
and scale_factor().

Add a few more URI parsing functions.  Move some functions out of str.c and
into str.h as inline functions.
 2012-11-22 18:15:40 +10:30
Jeremy Lakeman
36cee7e9bc Move payload queueing functions to separate .c file 2012-11-21 11:02:00 +10:30
Jeremy Lakeman
93ee6b3fc8 Don't kill the interface for unreachable unicast peers 2012-11-12 14:46:09 +10:30
Jeremy Lakeman
54e2d66934 Allow for with slightly longer paths 2012-11-09 13:40:55 +10:30
Andrew Bettison
d9fb8d7956 Refactor 'interfaces' config parsing 
Use new "str.h" str_to_ll_scaled() function to implement parse_quantity().
 2012-10-31 18:16:05 +10:30
Andrew Bettison
c3ef89acc1 Fix bug: "interfaces=+" not working 
The logic was clobbered back in June in a refactor by Daniel.
 2012-10-30 14:50:47 +10:30
Jeremy Lakeman
a4b392d693 Don't include rhizome adverts in packets with voice frames 2012-10-29 13:10:20 +10:30
Jeremy Lakeman
de95bb3971 Gracefully disable rhizome if the database cannot be opened 
- close database after every command line operation
- don't cache rhizome enabled configuration
- don't send advertisements unless the database is open and the web server is running
- don't provess advertisements unless the database is open
 2012-10-29 13:05:03 +10:30
Jeremy Lakeman
bb973e764e Don't send duplicate payloads over unicast 2012-10-19 10:40:35 +10:30
Jeremy Lakeman
3ab474be16 Always update unicast addresses 2012-10-19 10:40:02 +10:30
Andrew Bettison
259b9a9d24 Logging/debug improvements: __WHENCE__, __whence 
Introduce __WHENCE__ macro and a block comment in log.h explaining it.

In "primitive" kinds of functions, rename 'whence' arguments to '__whence' and
use WHYF(), WARNF(), DEBUGF() macros instead of calling logMessage() directly.
 2012-10-16 17:00:03 +10:30
Andrew Bettison
89343c69cd Merge branch 'rhizomedirect' into 'master' 2012-10-05 17:45:30 +09:30
Jeremy Lakeman
2a7bd28e51 Extend packet queue to allow sending multiple copies of the same payload for reliability 2012-09-28 11:28:01 +09:30
Andrew Bettison
fb7c9e5633 Fix compiler warnings on Linux gcc 4.7.1 2012-09-27 11:02:58 +09:30
Jeremy Lakeman
b7c088f2fd Reduce latency of dummy interface, improve some debug messages 2012-09-20 10:28:02 +09:30
Jeremy Lakeman
ac00c06a18 Improve reliability of tests with dummy interface 2012-09-20 10:28:01 +09:30
Jeremy Lakeman
0538e95be8 Reduce the potential for packet storms 2012-09-20 10:28:01 +09:30
Jeremy Lakeman
dc8a453b7f Add please explain message 
- non-tick packets now include a poorly formed SELF_ANNOUNCE to correctly identify every packet sender
 2012-09-20 10:28:01 +09:30
Jeremy Lakeman
ee4e05109f Improvements to dummy interfaces 
- separate folder configuration
- allow for tickless dummy interface
- allow for "unicast" peer discovery (though there's no packet filtering)
 2012-09-19 09:52:14 +09:30
Jeremy Lakeman
5914bc92ce Use a directory service as a default route 2012-09-19 09:50:29 +09:30
Jeremy Lakeman
7c73ca7a78 Finish test and implementation of directory service 2012-09-18 12:30:15 +09:30
Jeremy Lakeman
ac8d9b93e6 Add stub directory service 2012-09-14 11:50:45 +09:30
Jeremy Lakeman
58fae14ef2 Bind to interface address so unicast packets can be received & always bind to INADDR_ANY 2012-09-11 15:20:44 +09:30
Jeremy Lakeman
fbe9980199 Add explicit flag for unicast peers 2012-09-10 10:55:12 +09:30
Jeremy Lakeman
f2bae4361e Improve logging and failure handling 2012-09-10 10:31:01 +09:30
Jeremy Lakeman
2b530bb02a Trying to send unicast sas request 2012-09-07 13:04:40 +09:30
Jeremy Lakeman
3b55643b08 Send my full sid periodically for any outgoing payload header 2012-09-07 10:01:34 +09:30
Jeremy Lakeman
adde23dfd0 Fix for restarting interfaces with different broadcast address 2012-09-06 09:57:36 +09:30
Paul Gardner-Stephen
bba6839656 Initial stab at porting to Solaris. 
It compiles without warning (with CC=gcc) but doesn't link
because NaCL doesn't build yet.
 2012-09-05 20:42:50 +09:30
Jeremy Lakeman
c6eafb5380 Demote port comparison from an assert to an error 2012-09-01 12:41:51 +09:30
Jeremy Lakeman
cf22ef8e8c Ensure route and interface is still valid before sending packet 2012-09-01 12:41:50 +09:30
Jeremy Lakeman
211e25608e Send packet to unicast address 2012-09-01 12:18:39 +09:30
Jeremy Lakeman
1b91724da2 Allow for interfaces that don't tick, pack rhizome manifests into all packets 2012-09-01 12:18:39 +09:30
Jeremy Lakeman
e05806f25e Separate routing calculation from resulting rules, refactor more code to use subscriber structure 2012-08-31 15:11:18 +09:30
Jeremy Lakeman
df0e20408c Close sockets on poll errors 2012-08-31 15:04:06 +09:30
Jeremy Lakeman
f6c899e107 Refactor overlay buffer interface to support simple parsing 2012-08-31 15:03:07 +09:30
Jeremy Lakeman
22c6b530ed Rework broadcast address handling, working towards a unified address struct 2012-08-31 15:03:07 +09:30
Daniel O'Connor
e7201963d0 Staticise a bunch of functions so I get some understanding of what is needed where. 2012-08-31 12:13:20 +09:30
Daniel O'Connor
0dd2145ed4 assert that the port number matches between calls to overlay_interface_init_any() 2012-08-24 15:21:23 +09:30
Andrew Bettison
27a0a6eeb5 Introduce struct __sourceloc 
Replaces (const char *file, unsigned int line, const char *function) arguments
to all logging functions, simplifies malloc/free tracking code in
overlay_buffer.c and Rhizome manifest alloc/free tracking in rhizome_bundle.c.

Use __HERE__ macro instead of (__FILE__, __LINE__, __FUNCTION__) everywhere.

Special __NOWHERE__ macro is equivalent to (NULL, 0, NULL).

Declare net.c functions in new "net.h" header, so log.c doesn't have to pull
in the entire "serval.h" just to use write_str().

Facilitates progress on issue #2.
 2012-08-23 12:31:07 +09:30
Jeremy Lakeman
60a82eb251 Improve logging 2012-08-14 16:31:29 +09:30
Jeremy Lakeman
fd111a4d1f Listen to INADDR_ANY on OSX, otherwise we can't hear broadcasts 2012-08-09 13:32:08 +09:30
Andrew Bettison
12d8bc0c12 Use new typedef time_ms_t everywhere 2012-08-09 12:14:32 +09:30
Andrew Bettison
858c6c3efc Improve logging to diagnose dnaprotocol test failure 2012-08-03 19:08:44 +09:30
Andrew Bettison
03da89225d Add xprintf() extensible stream formatter 
Use it to replace open_memstream(3) in logServalPacket() -- not available on
Mac OS X
 2012-08-03 16:44:05 +09:30
Andrew Bettison
9ede55ab4c Fix DEBUG_packet_visualise() log output 2012-08-03 13:12:54 +09:30
Andrew Bettison
f37ec5af09 Reduce use of stderr in many places 
serval_packetvisualise() is now replaced by DEBUG_packet_visualise() which uses
logging system not stderr (so now it will appear in Android log).

Replaced several fprintf(stderr,...) with DEBUGF(...).

Command line only prints a full help message on "help" command -- a command
parse failure simply informs the user about the "help" command.
 2012-08-01 17:54:02 +09:30
Andrew Bettison
76cfb7beae Fix bug failed dnaprotocol tests non-deterministically 
Appending to the dummy interface file was altering the read offset position, so
very many receive packets were being lost.
 2012-07-31 17:49:24 +09:30
Andrew Bettison
24b05eaeaa Fix bug in self-announcements 
On first tick, do not send s1 = 0, but s1 = s2 - 1 (1 ms window)
 2012-07-31 16:21:29 +09:30
Andrew Bettison
ddc17434c4 Fix next-hop logic for case of no interfaces up 2012-07-30 18:35:28 +09:30
Andrew Bettison
240be25793 Replace overlay_gettime_ms() with gettime_ms() 2012-07-30 17:22:38 +09:30
Jeremy Lakeman
6e7c2196ba Close interfaces on socket errors or when not detected 2012-07-25 16:53:44 +09:30
Jeremy Lakeman
74095e5356 Correctly display interface ip addresses on android 2012-07-25 14:53:53 +09:30
Jeremy Lakeman
ddba8033e4 Refactor packet envelope and sid abbreviation reading and writing 2012-07-17 15:30:50 +09:30
Jeremy Lakeman
5e915bcc09 Schedule packet sending 2012-07-13 12:18:50 +09:30
Jeremy Lakeman
d36ba78afe Refactor packet construction and sending 2012-07-13 12:18:50 +09:30
Jeremy Lakeman
27c24f377e Add deadline time for alarm prioritisation 2012-07-13 12:18:45 +09:30
Jeremy Lakeman
35b4ba8594 Schedule interface ticks per interface 2012-07-13 12:13:46 +09:30
Andrew Bettison
d111f763c7 Fix bugs revealed by 'rhizomeprotocol' test 
Was not transmitting actual HTTP server port in rhizome announcements, was
always transmitting port 4110.

When trying for a free HTTP server port, sometimes bind() succeeds but listen()
fails with EADDRINUSE, so new logic to deal with that.
 2012-07-12 12:10:59 +09:30
Jeremy Lakeman
ef8c1dd981 Simplify next interface tick calculation 2012-07-05 15:56:42 +09:30
Andrew Bettison
451e517c02 Clean up last #warning compiler message 2012-07-04 10:49:31 +09:30
Andrew Bettison
72769e162b Replace overlay_render_sid_prefix() with alloca_tohex() 
To eliminate timebomb bugs caused by rotor wraparound
 2012-07-04 10:30:46 +09:30
Andrew Bettison
2c87039307 Replace overlay_render_sid() with alloca_tohex_sid() 
To eliminate timebomb bugs caused by rotor wraparound
 2012-07-03 17:59:30 +09:30
Andrew Bettison
78a8aaca16 Code improvements while debugging 'dnaprotocol' tests 
Use ssize_t and size_t where required by system calls
More stringent checking of errors from system calls
Log the offset when writing to dummy interface file
Clean up many WHY/INFO/DEBUG statements
Convert many fprintf(stderr,...) to DEBUGF()
 2012-07-03 15:36:51 +09:30
Andrew Bettison
8020ea3b74 Merge branch 'eventscheduler' into master 
Conflicts:
	commandline.c
	monitor.c
	overlay.c
	overlay_interface.c
	overlay_packetformats.c
	rhizome_fetch.c
	rhizome_http.c
	rhizome_packetformats.c
	serval.h
	server.c
	testdefs.sh
	testframework.sh
	tests/dnaprotocol
	tests/server
 2012-07-03 10:26:22 +09:30
Jeremy Lakeman
132d3a6f9b rename profiling structure 2012-07-02 16:04:00 +09:30
Jeremy Lakeman
e705696896 separate statistics gathering from the scheduler structure 2012-07-02 15:20:30 +09:30
Jeremy Lakeman
89566e4d3d Refactor how functions are scheduled or file handes are watched 2012-07-02 13:19:54 +09:30
Andrew Bettison
fc8df7d5d4 Config options for tick duration 2012-07-02 12:26:01 +09:30
Andrew Bettison
b9836af8a2 Fix debug logging in overlay_interface.c 
Also fix bug that closed the logfile when forking the server process.
 2012-06-28 17:34:21 +09:30
Andrew Bettison
a5ba1ecacd Clean up debugging code 
Only use DEBUG inside "if (debug & DEBUG_BLAH)", not INFO or WARN or WHY!
INFO messages for starting/stopping servald server.
 2012-06-28 15:37:36 +09:30
Jeremy Lakeman
29cba17891 Fix rhizome transfers 2012-06-27 16:54:42 +09:30
gardners
1897aa2eef only handle one packet per call to help stats gathering and fairness. 2012-06-25 15:46:34 +09:30
gardners
0c0e5b73e9 reduced debugging output. 2012-06-25 14:46:55 +09:30
gardners
3b6a004cc9 new event scheduler almost working, but after a while can stop 
calling overlay_check_ticks alarm for some reason, which causes
queues to congest and bad things to generally happen.
 2012-06-22 17:30:21 +09:30
gardners
3e88400e16 cleaned up some debugging. 2012-06-22 16:06:47 +09:30
gardners
895b5873f0 fixed bug cpu time wasting bug for dummynets. 2012-06-22 16:06:46 +09:30
gardners
b675e8eefd removed debugging 2012-06-22 16:06:46 +09:30
gardners
91bccec71d various fixes related to event scheduler. 
server main loop is now just fd_poll()
 2012-06-22 16:05:50 +09:30
gardners
7ea0c2f3bf fixed bug in dummynet interface handling with new event scheduler. 2012-06-22 16:05:49 +09:30
gardners
5dc6d122a5 significant progress towards clean callback scheduler for poll() 
events and timed callbacks.
 2012-06-22 16:05:49 +09:30
gardners
2d718a297f reversed changes that broke DNA tests. Improved dnaprotocol 
test script slightly.
 2012-06-21 17:02:36 +09:30
gardners
136a7bcf56 fixed bug with absolute-path dummynet files. 
added pid of producer to dummynet packets.
 2012-06-21 16:36:38 +09:30
gardners
5d3e9a21f7 fixed bug with interface specifications to allow - in dummynet paths. 2012-06-21 16:36:37 +09:30
gardners
500b9f9f28 fixed a memory leak, more to find. 2012-06-21 11:33:43 +09:30
Jeremy Lakeman
926d4296c4 Added overall timer for main loop, minor tweaks to order and freq. of processes 2012-06-21 11:33:43 +09:30
gardners
b48fdb6567 added deeper timing checks to reveal that rhizome advertisements 
are the slowest part -- need to add caching of manifests so that
we don't hit the database every interface tick.
 2012-06-21 11:33:43 +09:30
gardners
0dd5845cdd added instrumentation to detect when servald spends more than 5ms doing 
anything.  Reports which bit of the overlay mesh main loop the time was
spent in, to help track it down.
 2012-06-15 15:13:45 +09:30
Daniel O'Connor
e8c648c724 Remove reference to non existent variable. 2012-06-15 15:09:21 +09:30
Daniel O'Connor
c5a9321880 Improve debug output (translate IPs & ports into human readable things). 
Revert change to use src_addr as this will break other platforms and needs more thought.
Reformat overlay_interface_discover.
 2012-06-15 15:09:21 +09:30