gnrc_netif: add general IID to/from l2addr conversion functions #10513

miri64 · 2018-11-29T13:37:27Z

Contribution description

They are required to make GNRC's 6Lo IPHC implementation ready for hardware addresses other than IEEE 802.15.4's.

Testing procedure

Pinging a link-local address with gnrc_networking should still work for

Issues/PRs references

Depends on ~~#10509~~ (merged), ~~#10514~~ (invalid dependency), and ~~#10515~~ (merged).

miri64 · 2018-11-29T14:48:01Z

Rebased to current master and new dependencies.

…c_netif_hdr/enh/conv-iid-getter

miri64 · 2018-11-30T08:37:29Z

Rebased to and adapted for current master (since the #10514 dependency actually requires a PR downstream from this PR - #10514 (comment)). Ready for review and testing.

maribu

Looks good to me code-wise :-)

maribu · 2018-12-04T19:51:00Z

I hope I can test it tomorrow with the cc110x (both current and future) and with an enc28j60.

sys/net/gnrc/netif/gnrc_netif_device_type.c

maribu · 2018-12-05T09:16:19Z

To me it looks like the current issue Murdock uncovered seems to be unrelated.

@cladmi: As far as I know you are a linker magician. Care to have a look at the murdock build log?

/usr/lib/gcc/avr/5.4.0/../../../avr/bin/ld: address 0x80220a of /tmp/dwq.0.8781428163408961/ce7b5c92c43c4dec218e57c9939ac8c2/build/tests_gnrc_sock_udp.elf section `.bss' is not within region `data'
/usr/lib/gcc/avr/5.4.0/../../../avr/bin/ld: address 0x80220c of /tmp/dwq.0.8781428163408961/ce7b5c92c43c4dec218e57c9939ac8c2/build/tests_gnrc_sock_udp.elf section `.noinit' is not within region `data'
/usr/lib/gcc/avr/5.4.0/../../../avr/bin/ld: address 0x80220a of /tmp/dwq.0.8781428163408961/ce7b5c92c43c4dec218e57c9939ac8c2/build/tests_gnrc_sock_udp.elf section `.bss' is not within region `data'
/usr/lib/gcc/avr/5.4.0/../../../avr/bin/ld: address 0x80220c of /tmp/dwq.0.8781428163408961/ce7b5c92c43c4dec218e57c9939ac8c2/build/tests_gnrc_sock_udp.elf section `.noinit' is not within region `data'
collect2: error: ld returned 1 exit status

This does not seem to be an overflow, as in case of an overflow I get a message like this:

/usr/lib/gcc/arm-none-eabi/6.3.1/../../../../arm-none-eabi/bin/ld: /home/maribu/Repos/software/RIOT/examples/gnrc_networking/bin/bluepill/gnrc_networking.elf section `.text' will not fit in region `rom'
/usr/lib/gcc/arm-none-eabi/6.3.1/../../../../arm-none-eabi/bin/ld: region `rom' overflowed by 17640 bytes

(I cannot recall how the message looks like in case of a RAM overflow, but I assume it will also use the phrase "overflowed by xy bytes".)

haukepetersen · 2018-12-05T09:35:10Z

would you mind to rebase? That would simplify the review a bit... Thx

miri64 · 2018-12-05T15:54:01Z

Back on track: @maribu were you able to test by now?

cladmi · 2018-12-05T16:00:11Z

To show the output for the arduino-mega2560:

On my ubuntu-bionic machine:

With this PR:

RIOT_CI_BUILD=1 BOARD=arduino-mega2560 make -C tests/gnrc_sock_udp/
make: Entering directory '/home/harter/work/git/RIOT/tests/gnrc_sock_udp'
Building application "tests_gnrc_sock_udp" for "arduino-mega2560" with MCU "atmega2560".

/usr/lib/gcc/avr/5.4.0/../../../avr/bin/ld: address 0x80220a of /home/harter/work/git/RIOT/tests/gnrc_sock_udp/bin/arduino-mega2560/tests_gnrc_sock_udp.elf section `.bss' is not within region `data'
/usr/lib/gcc/avr/5.4.0/../../../avr/bin/ld: address 0x80220c of /home/harter/work/git/RIOT/tests/gnrc_sock_udp/bin/arduino-mega2560/tests_gnrc_sock_udp.elf section `.noinit' is not within region `data'
/usr/lib/gcc/avr/5.4.0/../../../avr/bin/ld: address 0x80220a of /home/harter/work/git/RIOT/tests/gnrc_sock_udp/bin/arduino-mega2560/tests_gnrc_sock_udp.elf section `.bss' is not within region `data'
/usr/lib/gcc/avr/5.4.0/../../../avr/bin/ld: address 0x80220c of /home/harter/work/git/RIOT/tests/gnrc_sock_udp/bin/arduino-mega2560/tests_gnrc_sock_udp.elf section `.noinit' is not within region `data'
collect2: error: ld returned 1 exit status
/home/harter/work/git/RIOT/tests/gnrc_sock_udp/../../Makefile.include:446: recipe for target '/home/harter/work/git/RIOT/tests/gnrc_sock_udp/bin/arduino-mega2560/tests_gnrc_sock_udp.elf' failed
make: *** [/home/harter/work/git/RIOT/tests/gnrc_sock_udp/bin/arduino-mega2560/tests_gnrc_sock_udp.elf] Error 1
make: Leaving directory '/home/harter/work/git/RIOT/tests/gnrc_sock_udp'

With a "bigger" RAM, 16K instead of 8K linking works properly:

RIOT_CI_BUILD=1 BOARD=arduino-mega2560 make -C tests/gnrc_sock_udp/ RAM_LEN=16K
make: Entering directory '/home/harter/work/git/RIOT/tests/gnrc_sock_udp'
Building application "tests_gnrc_sock_udp" for "arduino-mega2560" with MCU "atmega2560".

   text    data     bss     dec     hex filename
  46690    4362    3842   54894    d66e /home/harter/work/git/RIOT/tests/gnrc_sock_udp/bin/arduino-mega2560/tests_gnrc_sock_udp.elf
make: Leaving directory '/home/harter/work/git/RIOT/tests/gnrc_sock_udp'

So the board just needs to be put in BOARD_INSUFFICIENT_MEMORY.

maribu · 2018-12-05T16:13:07Z

Works fine with the CC1100/MSB-A2 using the current cc110x driver and works fine with the CC1101/MSB-IoT using PR #10340

miri64 · 2018-12-05T17:27:43Z

@gschorcht can you test with ESP32?

gschorcht · 2018-12-05T21:19:12Z

Works fine with the ESP32

miri64 · 2018-12-05T23:04:04Z

Thanks for testing @maribu and @gschorcht!

maribu · 2018-12-06T09:56:16Z

I just found my enc28j60. I will test as soon as I have time

miri64 · 2018-12-06T10:03:32Z

I just found my enc28j60. I will test as soon as I have time

You don't have to if you don't have the time. native can also be used for testing Ethernet.

gschorcht · 2018-12-06T10:06:52Z

@miri64 I forgot to mention, I tested ESP32 only with esp_now netdev driver.

I have also an ESP32 board with EMAC and LAN8270 ethernet interface. So, I tested it with esp_eth netdev driver too and it works fine.

TimoRoth · 2018-12-06T11:27:15Z

What I'm wondering about ESP-NOW is that for examples its _send function expects the data to be a pointer to an ipv6_hdr_t:

https://github.com/RIOT-OS/RIOT/blob/master/cpu/esp32/esp-now/esp_now_netdev.c#L526

But with 6Lo, wouldn't something along those lines be needed, where the first byte of the data indicates what actually follows:

https://github.com/RIOT-OS/RIOT/blob/master/sys/net/network_layer/sixlowpan/sixlowpan_print.c#L23

Or is that unpacked for ESP-NOW at an earlier point, and it only gets to see properly fragmented actual IPv6 packages?

miri64 · 2018-12-06T11:30:13Z

@TimoRoth can we please discuss 6Lo over ESP-Now in #10531 rather than this unrelated issue?

miri64 · 2018-12-06T11:31:06Z

But to answer your question: yes ESP-now needs then to assume, that the first header is a 6Lo dispatch instead of a IPv6 header.

miri64 · 2018-12-06T11:34:47Z

(this whole file looks rather hacked I might add oO)

haukepetersen · 2018-12-06T13:32:58Z

tested all remaining link layers successfully:

nrfmin using two nrf52dk boards no my desk -> ping works both ways
ieee802.15.4 using two iotlab-m3 boards in the iot-lab -> ping works both ways
ethernet using native -> ping works two ways
softdevice -> ping to/from linux does not work, but the same is true for master. But the IID generation (verified using ifconfig) seems to do the trick, so I consider this PR not doing any harm here...

haukepetersen

ACK

They are required to make GNRC's 6Lo IPHC implementation ready for hardware addresses other than IEEE 802.15.4's.

miri64 · 2018-12-06T13:41:42Z

Squashed

miri64 · 2018-12-06T14:21:03Z

Marked arduino-mega2560 in tests/gnrc_sock_udp for insufficient memory.

haukepetersen · 2018-12-06T14:56:59Z

all green -> go!

miri64 added Type: enhancement The issue suggests enhanceable parts / The PR enhances parts of the codebase / documentation Area: network Area: Networking Process: API change Integration Process: PR contains or issue proposes an API change. Should be handled with care. labels Nov 29, 2018

miri64 requested review from haukepetersen and bergzand November 29, 2018 13:37

miri64 changed the title ~~Gnrc netif/enh/iid conversion~~ gnrc_netif: add general IID to/from l2addr conversion functions Nov 29, 2018

miri64 requested review from gschorcht and maribu November 29, 2018 13:43

miri64 force-pushed the gnrc_netif/enh/iid-conversion branch from b20cdb4 to 80258ef Compare November 29, 2018 14:46

miri64 added the State: waiting for other PR State: The PR requires another PR to be merged first label Nov 29, 2018

miri64 added a commit to miri64/RIOT that referenced this pull request Nov 29, 2018

Merge branch 'gnrc_netif/enh/iid-conversion' (RIOT-OS#10513) into gnr…

42b680c

…c_netif_hdr/enh/conv-iid-getter

This was referenced Nov 29, 2018

gnrc_netif_hdr: provide wrappers for gnrc_netif_ipv6_iid_from_addr() #10520

Merged

ethernet: make input parameter const #10522

Merged

gnrc_netif: centralize device-type-specific functions #10524

Merged

miri64 force-pushed the gnrc_netif/enh/iid-conversion branch from c618ccd to b2a05a5 Compare November 30, 2018 08:35

miri64 added CI: ready for build If set, CI server will compile all applications for all available boards for the labeled PR and removed State: waiting for other PR State: The PR requires another PR to be merged first labels Nov 30, 2018

miri64 added a commit to miri64/RIOT that referenced this pull request Nov 30, 2018

Merge branch 'gnrc_netif/enh/iid-conversion' (RIOT-OS#10513) into HEAD

3eabe3e

miri64 mentioned this pull request Dec 3, 2018

gnrc_ipv6_nib: use correct reverse-translate for ARSM-less NCE #10536

Merged

maribu reviewed Dec 4, 2018

View reviewed changes

sys/net/gnrc/netif/gnrc_netif_device_type.c Show resolved Hide resolved

miri64 added the Reviewed: 3-testing The PR was tested according to the maintainer guidelines label Dec 6, 2018

haukepetersen approved these changes Dec 6, 2018

View reviewed changes

miri64 added 3 commits December 6, 2018 14:41

gnrc_netif: add general IID to/from l2addr conversion functions

5ca30b9

They are required to make GNRC's 6Lo IPHC implementation ready for hardware addresses other than IEEE 802.15.4's.

gnrc_netif: use general IID conversion function for netif-based

a44f7f7

gnrc_ipv6_nib: gnrc_netif_iid_to_addr() instead of _reverse_iid()

bc1b490

miri64 force-pushed the gnrc_netif/enh/iid-conversion branch from 0535402 to bc1b490 Compare December 6, 2018 13:41

tests/gnrc_sock_udp: mark arduino-atmega2560 for insufficient memory

f757376

miri64 force-pushed the gnrc_netif/enh/iid-conversion branch from c7d146d to f757376 Compare December 6, 2018 14:39

haukepetersen merged commit 92fcb4d into RIOT-OS:master Dec 6, 2018

miri64 deleted the gnrc_netif/enh/iid-conversion branch December 6, 2018 14:57

This was referenced Dec 6, 2018

gnrc/netif/internal: fix copy-paste error #10565

Merged

net: add eui48 type including IPv6 IID conversion funcs #10567

Merged

aabadie added this to the Release 2019.01 milestone Dec 19, 2018

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gnrc_netif: add general IID to/from l2addr conversion functions #10513

gnrc_netif: add general IID to/from l2addr conversion functions #10513

miri64 commented Nov 29, 2018 •

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gnrc_netif: add general IID to/from l2addr conversion functions #10513

gnrc_netif: add general IID to/from l2addr conversion functions #10513

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Contribution description

Testing procedure

Issues/PRs references

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