08 Jul, 2016
3 commits
-
The RIOT-OS stack does send intra-pan frames but don't set the intra pan
flag inside the mac header. It seems this is valid frame addressing but
inefficient. Anyway this patch adds a new function for intra pan
addressing, doesn't matter if intra pan flag or source and destination
are the same. The newly introduction function will be used to check on
intra pan addressing for 6lowpan.Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
This patch reverts commit f9d1ce8f81eb ("ieee802154: fix netns settings").
The lowpan interface need to be created inside the net namespace where
the wpan interface is available. The wpan namespace can be changed only
by nl802154 before. Without this patch it's not possible to create a
lowpan interface for a wpan interface which isn't inside init_net
namespace.Cc: Nicolas Dichtel
Reviewed-by: Stefan Schmidt
Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
This patch adds netns support for 802.15.4 subsystem. Most parts are
copy&pasted from wireless subsystem, it has the identically userspace
API.Cc: Nicolas Dichtel
Reviewed-by: Stefan Schmidt
Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann
06 Jul, 2016
1 commit
-
As the following patch will allow upper devices to follow the call down
lower devices, we need to add dev here and not rely on n->dev.Signed-off-by: Jiri Pirko
Reviewed-by: Ido Schimmel
Signed-off-by: David S. Miller
16 Jun, 2016
2 commits
-
This patch adds necessary handling for use the short address for
802.15.4 6lowpan. It contains support for IPHC address compression
and new matching algorithmn to decide which link layer address will be
used for 802.15.4 frame.Reviewed-by: Stefan Schmidt
Signed-off-by: Alexander Aring
Signed-off-by: David S. Miller -
This patch will introduce a 6lowpan neighbour private data. Like the
interface private data we handle private data for generic 6lowpan and
for link-layer specific 6lowpan.The current first use case if to save the short address for a 802.15.4
6lowpan neighbour.Cc: David S. Miller
Reviewed-by: Stefan Schmidt
Acked-by: YOSHIFUJI Hideaki
Signed-off-by: Alexander Aring
Signed-off-by: David S. Miller
10 Jun, 2016
1 commit
-
It is time to add netdev_lockdep_set_classes() helper
so that lockdep annotations per device type are easier to manage.This removes a lot of copies and missing annotations.
Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller
08 Jun, 2016
1 commit
-
Instead of using a single bit (__QDISC___STATE_RUNNING)
in sch->__state, use a seqcount.This adds lockdep support, but more importantly it will allow us
to sample qdisc/class statistics without having to grab qdisc root lock.Signed-off-by: Eric Dumazet
Cc: Cong Wang
Cc: Jamal Hadi Salim
Signed-off-by: David S. Miller
30 May, 2016
1 commit
-
Fix a logic error to avoid potential null pointer dereference.
Signed-off-by: Baozeng Ding
Reviewed-by: Stefan Schmidt
Signed-off-by: David S. Miller
27 Apr, 2016
1 commit
-
…etooth/bluetooth-next
Johan Hedberg says:
====================
pull request: bluetooth-next 2016-04-26Here's another set of Bluetooth & 802.15.4 patches for the 4.7 kernel:
- Cleanups & refactoring of ieee802154 & 6lowpan code
- Security related additions to ieee802154 and mrf24j40 driver
- Memory corruption fix to Bluetooth 6lowpan code
- Race condition fix in vhci driver
- Enhancements to the atusb 802.15.4 driverPlease let me know if there are any issues pulling. Thanks.
====================Signed-off-by: David S. Miller <davem@davemloft.net>
26 Apr, 2016
1 commit
-
Signed-off-by: Nicolas Dichtel
Signed-off-by: David S. Miller
24 Apr, 2016
1 commit
-
nla_data() is now aligned on a 64-bit area.
Signed-off-by: Nicolas Dichtel
Signed-off-by: David S. Miller
13 Apr, 2016
4 commits
-
This patch moves the 802.15.4 link layer specific structures to generic
6lowpan. This is necessary for special 802.15.4 6lowpan handling in
6lowpan generic layer.Reviewed-by: Stefan Schmidt
Signed-off-by: Alexander Aring
Acked-by: Jukka Rissanen
Signed-off-by: Marcel Holtmann -
This patch changes the naming for interface private data for lowpan
intefaces. The current private data scheme is:-------------------------------------------------
| 6LoWPAN Generic | LinkLayer 6LoWPAN |
-------------------------------------------------the current naming schemes are:
- 6LoWPAN Generic:
- lowpan_priv
- LinkLayer 6LoWPAN:
- BTLE
- lowpan_dev
- 802.15.4:
- lowpan_dev_infothe new naming scheme with this patch will be:
- 6LoWPAN Generic:
- lowpan_dev
- LinkLayer 6LoWPAN:
- BTLE
- lowpan_btle_dev
- 802.15.4:
- lowpan_802154_devSigned-off-by: Alexander Aring
Reviewed-by: Stefan Schmidt
Acked-by: Jukka Rissanen
Signed-off-by: Marcel Holtmann -
The short address is unique in combination with the panid. This patch
will add the panid for generating an ieee802154 address hash.Reviewed-by: Stefan Schmidt
Signed-off-by: Alexander Aring
Acked-by: Jukka Rissanen
Signed-off-by: Marcel Holtmann -
The generation of autoconfigured IPv6 link-local addresses starts with a
notification on interface up.To handle autoconfiguration according to RFC 4944 requires pan id and
short address to generate an autoconfigured link-local address. This
patch will avoid changing of these link-layer address configuration
while lowpan interface is up.Reviewed-by: Stefan Schmidt
Signed-off-by: Alexander Aring
Acked-by: Jukka Rissanen
Signed-off-by: Marcel Holtmann
24 Feb, 2016
1 commit
-
This patch fixed the return value of netdev notifier. If the command is
a don't care a NOTIFY_DONE should be returned. If the command matched a
NOTIFY_OK should be returned.Reviewed-by: Stefan Schmidt
Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann
11 Feb, 2016
1 commit
-
In order to support fast reuseport lookups in TCP, the hash function
defined in struct proto must be capable of returning an error code.
This patch changes the function signature of all related hash functions
to return an integer and handles or propagates this return value at
all call sites.Signed-off-by: Craig Gallek
Signed-off-by: David S. Miller
06 Jan, 2016
1 commit
-
The only user was removed in commit
029f7f3b8701cc7a ("netfilter: ipv6: nf_defrag: avoid/free clone operations").Signed-off-by: Florian Westphal
Signed-off-by: David S. Miller
10 Dec, 2015
1 commit
-
This patch introduces register and unregister functionality for lowpan
interfaces. While register a lowpan interface there are several things
which need to be initialize by the 6lowpan subsystem. Upcoming
functionality need to register/unregister per interface components e.g.
debugfs entry.Reviewed-by: Stefan Schmidt
Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann
03 Nov, 2015
1 commit
-
This patch fixes following problems :
1) percpu_counter_init() can return an error, therefore
init_frag_mem_limit() must propagate this error so that
inet_frags_init_net() can do the same up to its callers.2) If ip[46]_frags_ns_ctl_register() fail, we must unwind
properly and free the percpu_counter.Without this fix, we leave freed object in percpu_counters
global list (if CONFIG_HOTPLUG_CPU) leading to crashes.This bug was detected by KASAN and syzkaller tool
(http://github.com/google/syzkaller)Fixes: 6d7b857d541e ("net: use lib/percpu_counter API for fragmentation mem accounting")
Signed-off-by: Eric Dumazet
Reported-by: Dmitry Vyukov
Cc: Hannes Frederic Sowa
Cc: Jesper Dangaard Brouer
Acked-by: Hannes Frederic Sowa
Signed-off-by: David S. Miller
22 Oct, 2015
1 commit
-
Looking at current situation of memory management in 6lowpan receive
function I detected some invalid handling. After calling
lowpan_invoke_rx_handlers we will do a kfree_skb and then NET_RX_DROP on
error handling. We don't do this before, also on
skb_share_check/skb_unshare which might manipulate the reference
counters.After running some 'grep -r "dev_add_pack" net/' to look how others
packet-layer receive callbacks works I detected that every subsystem do
a kfree_skb, then NET_RX_DROP without calling skb functions which
might manipulate the skb reference counters. This is the reason why we
should do the same here like all others subsystems. I didn't find any
documentation how the packet-layer receive callbacks handle NET_RX_DROP
return values either.This patch will add a kfree_skb, then NET_RX_DROP handling for the
"trivial checks", in case of skb_share_check/skb_unshare the kfree_skb
call will be done inside these functions.Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann
21 Oct, 2015
4 commits
-
This macro is used at 802.15.4 6LoWPAN only and can be replaced by
memcmp with the interface broadcast address.Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
This patch removes the IPHC related defines for doing bit manipulation
from global 6lowpan header to the iphc file which should the only one
implementation which use these defines.Also move next header compression defines to their nhc implementation.
Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
This patch changes the lowpan_header_decompress function by removing
inklayer related information from parameters. This is currently for
supporting short and extended address for iphc handling in 802154.
We don't support short address handling anyway right now, but there
exists already code for handling short addresses in
lowpan_header_decompress.The address parameters are also changed to a void pointer, so 6LoWPAN
linklayer specific code can put complex structures as these parameters
and cast it again inside the generic code by evaluating linklayer type
before. The order is also changed by destination address at first and
then source address, which is the same like all others functions where
destination is always the first, memcpy, dev_hard_header,
lowpan_header_compress, etc.This patch also moves the fetching of iphc values from 6LoWPAN linklayer
specific code into the generic branch.Signed-off-by: Alexander Aring
Acked-by: Jukka Rissanen
Signed-off-by: Marcel Holtmann -
This patch changes the lowpan_header_compress function by removing
unused parameters like "len" and drop static value parameters of
protocol type. Instead we really check the protocol type inside inside
the skb structure. Also we drop the use of IEEE802154_ADDR_LEN which is
link-layer specific. Instead we using EUI64_ADDR_LEN which should always
the default case for now.Signed-off-by: Alexander Aring
Acked-by: Jukka Rissanen
Signed-off-by: Marcel Holtmann
08 Oct, 2015
1 commit
-
This patch moves values for all lowpan interface to the shared
implementation of 6lowpan. This patch also quietly fixes the forgotten
IFF_NO_QUEUE flag for the bluetooth 6LoWPAN interface. An identically
commit is 4afbc0d ("net: 6lowpan: convert to using IFF_NO_QUEUE") which
wasn't changed for bluetooth 6lowpan.All 6lowpan interfaces should be virtual with IFF_NO_QUEUE, using EUI64
address length, the mtu size is 1280 (IPV6_MIN_MTU) and the netdev type
is ARPHRD_6LOWPAN.Signed-off-by: Alexander Aring
Acked-by: Jukka Rissanen
Signed-off-by: Marcel Holtmann
03 Oct, 2015
1 commit
-
There was a missing return here so it meant that often
ieee802154_llsec_parse_key_id() was not called.Fixes: a26c5fd7622d ('nl802154: add support for security layer')
Signed-off-by: Dan Carpenter
Acked-by: Alexander Aring
Signed-off-by: Marcel Holtmann
01 Oct, 2015
1 commit
-
This reverts commit 9abc378c66e3d6f437eed77c1c534cbc183523f7
("ieee802154: 6lowpan: change datagram var types").The reason is that I forgot the IPv6 fragmentation here. Our MTU of
lowpan interface is 1280 and skb->len should not above of that. If we
reach a payload above 1280 in IPv6 header then we have a IPv6
fragmentation above 802.15.4 6LoWPAN fragmentation. The type "u16" was
fine, instead I added now a WARN_ON_ONCE if skb->len is above MTU which
should never happen otherwise IPv6 on minimum MTU size is broken.Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann
30 Sep, 2015
6 commits
-
This patch adds support for increment transmit and receive stats. The
meaning of these stats are IPv6 based, which shows the stats after
running the 6lowpan adaptation layer (uncompression/compression,
fragmentation handling) on receive and before the adaptation layer
when transmit.Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
This patch fixes the data frame sequence numer (dsn) while 6lowpan
fragmentation for frag1. Currently we create one 802.15.4 header at
first, then check if it's match into one frame and at the end construct
many fragments and calling wpan_dev_hard_header for each of them,
inclusive for the first fragment. This will make the first generated
header to garbage, instead we copying this header for frag1 instead of
generate a new one which skips one dsn.Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
This patch changes datagram size variable from u16 type to unsigned int.
The reason is that an IPv6 header has an MAX_UIN16 payload length, but
the datagram size is payload + IPv6 header length. This avoids overflows
at some places.Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
This patch changes the mtu size of 802.15.4 interfaces. The current
setting is the meaning of the maximum transport unit with mac header,
which is 127 bytes according 802.15.4. The linux meaning of the mtu size
field is the maximum payload of a mac frame. Like in ethernet, which is
1500 bytes.We have dynamic length of mac frames in 802.15.4, this is why we assume
the minimum header length which is hard_header_len. This contains fc and
sequence fields. These can evaluated by driver layer without additional
checks. We currently don't support to set the FCS from userspace, so we
need to subtract this from mtu size as well.Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
This patch adds support for accessing mac802154 llsec implementation
over nl802154. I added for a new Kconfig entry to provide this
functionality CONFIG_IEEE802154_NL802154_EXPERIMENTAL. This interface is
still in development. It provides to change security parameters and
add/del/dump entries of security tables. Later we can add also a get to
get an entry by unique identifier.Cc: Phoebe Buckheister
Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
This patch uses the nla_get_le64 function instead of doing a force
converting to le64.Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann
22 Sep, 2015
3 commits
-
This patch cleanups needed_headroom, needed_tailroom and hard_header_len
fields for wpan and lowpan interfaces.For wpan interfaces the worst case mac header len should be part of
needed_headroom, currently this is set as hard_header_len, but
hard_header_len should be set to the minimum header length which xmit
call assumes and this is the minimum frame length of 802.15.4.
The hard_header_len value will check inside send callbacl of AF_PACKET
raw sockets.For lowpan interfaces, if fragmentation isn't needed the skb will
call dev_hard_header for 802154 layer and queue it afterwards. This
happens without new skb allocation, so we need the same headroom and
tailroom lengths like 802154 inside 802154 6lowpan layer. At least we
assume as minimum header length an ipv6 header size.Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
The current header_ops callback structure of net device are used mostly
from 802.15.4 upper-layers. Because this callback structure is a very
generic one, which is also used by e.g. DGRAM AF_PACKET sockets, we
can't make this callback structure 802.15.4 specific which is currently
is.I saw the smallest "constraint" for calling this callback with
dev_hard_header/dev_parse_header by AF_PACKET which assign a 8 byte
array for address void pointers. Currently 802.15.4 specific protocols
like af802154 and 6LoWPAN will assign the "struct ieee802154_addr" as
these parameters which is greater than 8 bytes. The current callback
implementation for header_ops.create assumes always a complete
"struct ieee802154_addr" which AF_PACKET can't never handled and is
greater than 8 bytes.For that reason we introduce now a "generic" create/parse header_ops
callback which allows handling with intra-pan extended addresses only.
This allows a small use-case with AF_PACKET to send "somehow" a valid
dataframe over DGRAM.To keeping the current dev_hard_header behaviour we introduce a similar
callback structure "wpan_dev_header_ops" which contains 802.15.4 specific
upper-layer header creation functionality, which can be called by
wpan_dev_hard_header.Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
Sometimes upper-layer protocols wants to generate a new mac header by
filling "struct ieee802154_hdr" only. These upper-layers sets for the
address settings the source and dest fields, but not the fc fields for
indicate the source and dest address mode. This patch changes the
"ieee802154_hdr_push" function so the fc address fields are set
according the source and dest fields of "struct ieee802154_hdr".Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann
17 Sep, 2015
2 commits
-
The ESC dispatch value has some history and it originally was 0x7f in rfc4944
(see section-5.1). With the release of rfc6282 this value got part of the
LOWPAN_IPHC range and was no longer available for ESC. Instead 0x40 was used
as replacement (see section-2 in rfc6282).We have been checking the dispatch byte in an order where IPHC would always be
evaluated before ESC and thus we would never reach the ESC check as the IPHC
range already covers this value.Signed-off-by: Stefan Schmidt
Acked-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
This patch changes the return value of lowpan packet receive handler to
the correct NET_RX_DROP instead RX_DROP.This issue was detected by sparse and reported from Marcel:
net/ieee802154/6lowpan/rx.c:329:32: expected int
net/ieee802154/6lowpan/rx.c:329:32: got restricted lowpan_rx_result ...Reported-by: Marcel Holtmann
Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann
