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Commit Graph

86 Commits

Author SHA1 Message Date
Martine S. Lenders
c6781af281 gnrc_sixlowpan_frag_vrb: rename addr_str variable 2019-10-07 17:52:09 +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
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
1f7770da5c gnrc_sixlowpan_frag: move public rbuf functions to their own module 2019-09-27 19:09:52 +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
1f1ff16e3c gnrc_sixlowpan_frag: include VRB in normal GC 2019-08-07 16:19:36 +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
495eaa36a6 gnrc_sixlowpan_frag: remove unnecessary type indirection
The members of `rbuf_t` and `gnrc_sixlowpan_rbuf_t` are now identical
so we can remove the internal type.
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
93050d29c0 gnrc_sixlowpan_frag: unify common operations 2019-05-27 10:35:31 +02:00
Martine Lenders
04472d3fbe gnrc_sixlowpan_frag: reorder stack variables for better stack usage 2019-05-27 10:35:31 +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
43dedfcd2c gnrc_sixlowpan_frag/rbuf: document undocumented functions
This adds documentation for the following undocumented functions:

- rbuf_rm()
- rbuf_entry_empty()
2019-04-18 14:19:53 +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
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
449d4559a7 gnrc_sixlowpan_frag: replace printf with DEBUG 2019-03-07 18:17:07 +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
Marian Buschsieweke
194d340a64
net/sixlowpan: Fixed calculation of fragment size
Fragment size calculation previously failed for devices that are able to
transmit bigger layer 2 PDUs that 802.15.4 devices. This commit fixes the issue.
2019-02-12 09:45:31 +01:00
Martine Lenders
7d9ef9f78c gnrc_sixlowpan_frag/rbuf: add offset assertion to rbuf_add()
`gnrc_sixlowpan_frag` internally derives the offset value directly
from the fragment header, so for normal usage within GNRC this
assertion is redundant, but to make the tests of `rbuf_add` 100%
water-tide I added it.
2019-01-25 16:57:09 +01:00
Martine Lenders
1370099435 gnrc_sixlowpan_frag/rbuf: provide helper functions for testing 2019-01-23 20:00:07 +01:00
Martine Lenders
4c1d1424c0 gnrc_sixlowpan_frag: release for fragment too big error case
The fragment is released for all other error cases, just not this one.
2019-01-23 18:05:37 +01:00
Martine Lenders
01370511df gnrc_sixlowpan_frag: drop received duplicates
Otherwise duplicate fragments are added to the number of already
received datagram bytes in L153 leading to possible race-conditions.
2019-01-15 20:09:49 +01:00
Martine Lenders
7452f48c26 gnrc_sixlowpan_frag: unroll recursion
While the recursion in `gnrc_sixlowpan_frag` shouldn't be infinite we
still should avoid using recursions in general (also to be able to
statically analyze stack usage). This unrolls the recursion.
2019-01-08 09:03:22 +01:00
Gunar Schorcht
d3f78a5a40
Merge pull request #10679 from miri64/gnrc_sixlowpan_frag/fix/send-check-msg-queue
gnrc_sixlowpan_frag: check if own message queue is full
2018-12-30 15:48:26 +01:00
Martine Lenders
e8da744e6d gnrc_sixlowpan_frag: release packet when frag hdr can't be marked
Otherwise, there will be leaks ;-).
2018-12-30 01:05:34 +01:00
Martine Lenders
a409603f84 gnrc_sixlowpan_frag: release packet when rbuf is full
Otherwise, there will be leaks ;-).
2018-12-30 00:59:04 +01:00
Martine Lenders
9e3cdebae1 gnrc_sixlowpan_frag: check if own message queue is full
When issueing the sending of the next fragment the current version of
`gnrc_sixlowpan_frag` doesn't check if the queue is full. This leads to
leakage of the packet buffer, since when it is full, the package never
gets released.

This change adds a checks and error exits in case the queue is full.
2018-12-29 22:54:52 +01:00
Martine Lenders
d5bbf45d32 gnrc_sixlowpan_frag: reduce code duplication in send 2018-12-29 22:54:14 +01:00
Joakim Nohlgård
3cc088689e 6lo: Speling correction in comment 2018-08-14 10:08:52 +02:00
Joakim Nohlgård
58281e9135 6lo: Set more data flag on all but last frag 2018-08-14 10:08:17 +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
d6b2a9ed01
Merge pull request #9483 from miri64/gnrc_sixlowpan_frag/enh/finish-frag
gnrc_sixlowpan_frag: Expose functions to finish datagram
2018-07-25 11:53:14 +02:00