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40138fdce8
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81 Commits

Author SHA1 Message Date
Martine S. Lenders
40138fdce8 gnrc_sixlowpan_frag_rb: allow for deletion timer after completion 
This allows to set a timer between the completion of a datagram in the
reassembly buffer and the deletion of the corresponding reassembly
buffer entry. This allows to ignore potentially late incoming link-layer
duplicates of fragments of the datagram that then will have the
reassembly buffer entry be blocked.

This was noted in this [discussion] for classic 6LoWPAN reassembly (and
minimal fragment forwarding) and is recommended in the current
[selective fragment recovery draft][SFR draft].

[discussion]: https://mailarchive.ietf.org/arch/msg/6lo/Ez0tzZDqawVn6AFhYzAFWUOtJns
[SFR draft]: https://tools.ietf.org/html/draft-ietf-6lo-fragment-recovery-07#section-6
 2019-11-12 17:06:52 +01:00
Martine Lenders
796d6a3167 gnrc_sixlowpan: move garbage collect msg type to reassembly buffer 2019-10-24 12:41:29 +02:00
Martine Lenders
750fd30bb4 gnrc_sixlowpan_config: fix module doc for reassembly buffer config 2019-10-24 12:41:29 +02:00
Martine S. Lenders
5bf9892bb3 gnrc_sixlowpan_frag_rb: add new functions for SFR 2019-10-19 16:30:45 +02:00
Martine S. Lenders
ae879bc2ba gnrc_sixlowpan_frag_rb: add doc on rb_remove() NOP 2019-10-18 12:02:03 +02:00
Martine S. Lenders
f8d75d7add gnrc_sixlowpan_frag_rb: behavioral change to add() 
Rather than dispatching the packet automatically once it is complete,
`gnrc_sixlowpan_frag_rb_add()` now only returns success, and leaves it
to the caller to dispatch the packet.
 2019-10-18 09:02:32 +02:00
Martine S. Lenders
709baf8f1f gnrc_sixlowpan_frag_rb: make NOPs static inline functions 2019-10-18 09:02:32 +02:00
Martine S. Lenders
a229755abe gnrc_sixlowpan_frag_rb: return status on dispatch_when_complete() 2019-10-18 09:02:32 +02:00
Martine S. Lenders
b086453347 gnrc_sixlowpan_frag_rb: return pointer to entry on add() 2019-10-18 09:02:32 +02:00
Martine S. Lenders
f6686e92f1 gnrc_sixlowpan_frag_vrb: add gnrc_sixlowpan_frag_vrb_from_route() 
This adds a new VRB function that receives a header with forwarding
information and creates a VRB entry from it. Currently, only IPv6 is
supported.
 2019-10-07 18:16:47 +02:00
Martine S. Lenders
900ca3ff9e gnrc_sixlowpan_frag_vrb: add missing header include 2019-10-07 17:54:59 +02:00
Martine Lenders
04f59d6609 gnrc_sixlowpan_frag_vrb: re-use now unused super::dst for out_dst 2019-09-30 12:46:15 +02:00
Martine Lenders
45f7966364 gnrc_sixlowpan_frag_vrb: fix for draft update 
Due to some changes to the minimal forwarding draft and in preparation
for Selective Fragment Recovery some changes to the VRB API were
needed. Now the index of a VRB entry is only (L2 src, tag) not as
before (L2 src, L2 dst, length, tag).

I know that the current `rbuf_base` causes waste, as all the fields not
used by the new index are effectively not used by the VRB. I'd like to
fix that however in a later change, since that also requires some
modifications of the classic reassembly buffer, and thus would
complicate the review and testing of the change.

Sources for the index change:
- https://tools.ietf.org/html/draft-ietf-6lo-minimal-fragment-04#section-1
- https://mailarchive.ietf.org/arch/browse/6lo/?gbt=1&index=DLCTxC2X4bRNtYPHhtEkavMWlz4
 2019-09-29 18:31:43 +02:00
Martine Lenders
698d46eabe gnrc_sixlowpan_frag_rb: make NOPs dependent on RB 2019-09-28 13:36:39 +02:00
Martine Lenders
e9ff46b2ea gnrc_sixlowpan_frag_rb: unify naming scheme 2019-09-28 12:11:54 +02:00
Martine Lenders
178f4af108 gnrc_sixlowpan_frag_rb: remove legacy defines 2019-09-28 12:07:24 +02:00
Martine Lenders
972e4938bc gnrc_sixlowpan_frag_rb: use existing name scheme for private functions 2019-09-28 11:51:18 +02:00
Martine S. Lenders
49bd8678ed gnrc_sixlowpan_frag_rb: remove public around former private functions 2019-09-28 11:51:18 +02:00
Martine S. Lenders
ec495528fe gnrc_sixlowpan_frag: move private RB functions to RB module 2019-09-28 11:51:18 +02:00
Martine S. Lenders
b5545fe334 gnrc_sixlowpan: include reassembly buffer only where needed 2019-09-27 21:11:36 +02:00
Martine S. Lenders
2d9ba56c2c gnrc_sixlowpan_frag: move reassembly buffer to its own header 2019-09-27 18:34:02 +02:00
Martine Lenders
dca3408167 gnrc_sixlowpan_frag_stats: initial import of frag statistics 2019-09-11 10:30:29 +02:00
Hauke Petersen
02df6ab13f
Merge pull request #11000 from miri64/gnrc_sixlowpan_frag/new/vrb 
gnrc_sixlowpan_frag: initial import of the VRB
 2019-08-07 17:33:01 +02:00
Martine Lenders
26a526eaee gnrc_sixlowpan_frag: initial import of the VRB 
VRB = virtual reassembly buffer
 2019-08-07 16:18:19 +02:00
Cenk Gündoğan
3f4259af07
Merge pull request #11061 from miri64/gnrc_sixlowpan_frag/new/hint 
gnrc_sixlowpan_frag: Initial import of a fragment size hint feature
 2019-05-28 23:09:15 +02:00
Martine Lenders
2534cfb3fa gnrc_sixlowpan_frag: Initial import of a fragment size hint feature 
This allows for sending of fragments smaller than the restrictions set
by the link-layer PDU. E.g. to put some slack for IPHC into the first
fragment (see https://tools.ietf.org/html/draft-ietf-6lo-fragment-recovery-02#section-4.1).
 2019-05-28 21:03:51 +02:00
Martine Lenders
a8c81debf8 gnrc_sixlowpan_frag: use rbuf base class whenever possible 2019-05-28 18:07:42 +02:00
Martine Lenders
5e7803d506 gnrc_sixlowpan_frag: add datagram size to base type 2019-05-28 18:07:42 +02:00
Martine Lenders
52e4247798 gnrc_sixlowpan_frag: introduce reassembly buffer base class 2019-05-28 18:07:42 +02:00
Martine Lenders
8cc5d94956 gnrc_sixlowpan_frag: add arrival time to public type 
The arrival time is also needed for the VRB's garbage collection.
 2019-05-28 18:07:42 +02:00
Martine Lenders
b84e496563 gnrc_sixlowpan_frag: add intervals to public type 
The fragment intervals are also required by the VRB, so make them part
of the public representation of a reassembly buffer.
 2019-05-28 18:07:42 +02:00
Martine Lenders
a3061ab2cc gnrc_sixlowpan_frag: expose fragment interval type 
For the [VRB] I also need to track which the intervals of the fragments
already received (mostly for finding out when I am able to get rid of a
VRB entry, see [this conversation][VRB entry removal]), so to be able to
incorporate it into the common type for both reassembly buffer and VRB I
need to expose that type first.

[VRB]: https://tools.ietf.org/html/draft-ietf-lwig-6lowpan-virtual-reassembly-00
[VRB entry removal]: https://mailarchive.ietf.org/arch/msg/6lo/bTm2REo4PpVcMFH04mF_SlPvS_M
 2019-05-28 18:07:41 +02:00
Martine Lenders
8fe12bc82c
Merge pull request #11021 from miri64/gnrc_sixlowpan_frag/enh/multiple-send 
gnrc_sixlowpan_frag: allow send of multiple datagrams simultaneously
 2019-05-27 11:54:26 +02:00
Martine Lenders
b6f19c0bcb gnrc_sixlowpan_frag: allow send of multiple datagrams simultaneously 2019-05-27 10:35:31 +02:00
Martine Lenders
7e26a22723 gnrc_sixlowpan_frag: fix timeout config macro name 2019-05-24 17:39:35 +02:00
Martine Lenders
1cac697a62 gnrc_sixlowpan_frag: make aggresive override configurable 2019-04-25 09:37:34 +02:00
Martine Lenders
a55320a10a gnrc_sixlowpan_frag: expose tag progression functionality 
The VRB also needs to be able to generate new tags for forwarding. This
exposes the tag generation.
 2019-04-18 16:40:12 +02:00
Martine Lenders
1550390adb gnrc_sixlowpan_frag: expose reassembly buffer configuration 
Both values are not standardized so there is no sense keeping these
values not configurable
 2019-04-18 14:19:53 +02:00
Martine Lenders
ba3c099f16 gnrc_sixlowpan_nd: remove unused config variable (and its header) 2019-04-17 21:47:48 +02:00
Martine Lenders
2091f168d1 gnrc_sixlowpan: expose configuration via config group 2019-04-17 21:47:48 +02:00
Martine Lenders
931b179d14 gnrc_sixlowpan_frag: encapsulate msg_send_to_self() 
This makes it easier to access this functionality for test cases e.g.
from the `main` thread.
 2019-03-08 19:32:46 +01:00
Martine Lenders
0954fabdc7 gnrc_sixlowpan_frag: make datagram size uint16_t for send 
It can't get bigger, so it doesn't make sense to waste another 2 byte
on it.
 2019-02-15 11:23:46 +01:00
Martine Lenders
b27f12bc1f gnrc_sixlowpan_frag: remove redundant PID member 
The interface ID is actually also provided in `pkt` so providing it in
the `gnrc_sixlowpan_msg_frag_t` struct is redundant.
 2019-02-15 11:23:18 +01:00
Cenk Gündoğan
f03e52d157
Merge pull request #9484 from miri64/gnrc_sixlowpan_iphc/enh/i8511-recv 
gnrc_sixlowpan_iphc: refactor reception for #8511
 2018-07-26 07:58:52 +02:00
Martine Lenders
69d9ecc0d9 gnrc_sixlowpan_iphc: refactor reception for #8511 
This refactors reception/decoding part of `gnrc_sixlowpan_iphc` to the
more layered approach modeled in #8511. Since the reception part is
already complicated enough I decided to divide send and receive up into
separate changes.
 2018-07-25 18:15:09 +02:00
Martine Lenders
9a88cc8004 gnrc_sixlowpan: remove assertion on multiple_by_size function 
During the review of #9485 [we found out][1] that an assertion in this
function was invalid. However, the documentation on this assertion
wasn't removed on that. This fixes that.

[1] https://github.com/RIOT-OS/RIOT/pull/9485#issuecomment-407794280
 2018-07-25 18:00:30 +02:00
Cenk Gündoğan
7fef5e030a
Merge pull request #9485 from miri64/gnrc_sixlowpan_iphc/enh/i8511-send 
gnrc_sixlowpan_iphc: refactor sending for #8511
 2018-07-25 17:57:59 +02:00
Martine Lenders
80322cbd7d gnrc_sixlowpan_iphc: refactor sending for #8511 
This refactors sending/encoding part of `gnrc_sixlowpan_iphc` to the
more layered approach modeled in #8511. Since the reception part is
already was pretty complicated to refactor, I decided to divide send
and receive up into separate changes.
 2018-07-25 17:35:59 +02:00
Martine Lenders
64fed621d2 gnrc_sixlowpan_frag: Expose functions to finish datagram 
This will be used in the IPHC refactoring to control the reassembly
buffer as a context.

I also adapted the name of `gnrc_sixlowpan_frag_gc_rbuf()` to be in
line with the rest of the newer functions.
 2018-07-25 11:26:02 +02:00
Cenk Gündoğan
16e1f972ab
Merge pull request #9424 from miri64/gnrc_sixlowpan_frag/enh/async-gc 
gnrc_sixlowpan_frag: add asynchronous rbuf GC
 2018-07-03 11:45:52 +02:00