20 Sep, 2016
1 commit
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This patch removes handling to remove short address for a neigbour entry
if RS/RA/NS/NA doesn't contain a short address. If these messages
doesn't has any short address option, the existing short address from
ndisc cache will be used. The current behaviour will set that the
neigbour doesn't has a short address anymore.Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann
08 Jul, 2016
3 commits
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When receiving neighbour information with short address option field we
should check the complete range of invalid short addresses and set it to
one invalid address setting which is the unspecified address. This
address is also used when by creating at first a new neighbour entry to
indicate no short address is set.Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
This patch adds a missing check to handle short address parsing for
802.15.4 6LoWPAN only.Signed-off-by: Alexander Aring
Reviewed-by: Stefan Schmidt
Signed-off-by: Marcel Holtmann -
This patch removes a double unlock case to accessing neighbour private
data.Reported-by: Dan Carpenter
Signed-off-by: Alexander Aring
Reviewed-by: Stefan Schmidt
Signed-off-by: Marcel Holtmann
16 Jun, 2016
5 commits
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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 -
In case of sending RA messages we need some way to get the short address
from an 802.15.4 6LoWPAN interface. This patch will add a temporary
debugfs entry for experimental userspace api.Reviewed-by: Stefan Schmidt
Signed-off-by: Alexander Aring
Signed-off-by: David S. Miller -
This patch introduce different 6lowpan handling for receive and transmit
NS/NA messages for the ipv6 neighbour discovery. The first use-case is
for supporting 802.15.4 short addresses inside the option fields and
handling for RFC6775 6CO option field as userspace option.Cc: David S. Miller
Cc: Alexey Kuznetsov
Cc: James Morris
Cc: Hideaki YOSHIFUJI
Cc: Patrick McHardy
Reviewed-by: Stefan Schmidt
Acked-by: YOSHIFUJI Hideaki
Signed-off-by: Alexander Aring
Signed-off-by: David S. Miller -
Since we use exported function from ipv6 kernel module we don't need to
request the module anymore to have ipv6 functionality.Acked-by: Hannes Frederic Sowa
Reviewed-by: Stefan Schmidt
Signed-off-by: Alexander Aring
Signed-off-by: David S. Miller -
This patch adds the autoconfiguration if a valid 802.15.4 short address
is available for 802.15.4 6LoWPAN interfaces.Cc: David S. Miller
Cc: Alexey Kuznetsov
Cc: James Morris
Cc: Hideaki YOSHIFUJI
Cc: Patrick McHardy
Acked-by: Hannes Frederic Sowa
Reviewed-by: Stefan Schmidt
Signed-off-by: Alexander Aring
Signed-off-by: David S. Miller
13 Apr, 2016
6 commits
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In case of link-layer specific handling for 802.15.4 we need to cast to
802.15.4 sepcific structures. Simple add this header when include the
6lowpan header.Signed-off-by: Alexander Aring
Reviewed-by: Stefan Schmidt
Acked-by: Jukka Rissanen
Signed-off-by: Marcel Holtmann -
This patch adds the lowpan_is_ll function, which can be used to make a
special 6lowpan linklayer handling for a specific 6lowpan linklayer
type.Signed-off-by: Alexander Aring
Reviewed-by: Stefan Schmidt
Acked-by: Jukka Rissanen
Signed-off-by: Marcel Holtmann -
This function will be use in later functionality in other branches than
generic 6lowpan, so we move it to the global 6lowpan header.Signed-off-by: Alexander Aring
Reviewed-by: Stefan Schmidt
Acked-by: Jukka Rissanen
Signed-off-by: Marcel Holtmann -
This patch removes unnecessary zero data for a stack variable.
Signed-off-by: Alexander Aring
Acked-by: Jukka Rissanen
Signed-off-by: Marcel Holtmann -
This patch adds a lowpan prefix to each functions which doesn't have
such prefix currently.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
09 Apr, 2016
1 commit
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This patch fixes handling in case of link-local address compression. A
IPv6 link-local address is defined as fe80::/10 prefix which is also
what ipv6_addr_type checks for link-local addresses.But IPHC compression for link-local addresses are for fe80::/64 types
only. This patch adds additional checks for zero padded bits in case of
link-local address compression to match on a fe80::/64 address only.Signed-off-by: Alexander Aring
Acked-by: Jukka Rissanen
Reviewed-by: Stefan Schmidt
Signed-off-by: Marcel Holtmann
11 Mar, 2016
2 commits
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This patch fixes the comments for SAM/DAM value.
Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
This patch solves the sparse warning:
net/6lowpan/debugfs.c:164:30: warning: symbol 'lowpan_ctx_pfx_fops' was
not declared. Should it be static?
net/6lowpan/debugfs.c:241:30: warning: symbol 'lowpan_context_fops' was
not declared. Should it be static?Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann
26 Feb, 2016
1 commit
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This patch fixes the return value in a case which should never occur.
Instead returning "-EINVAL" we return LOWPAN_IPHC_DAM_00 which is
invalid on context based addresses. Also change the WARN_ON_ONCE to
WARN_ONCE which was suggested by Dan Carpenter.Reported-by: Dan Carpenter
Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann
24 Feb, 2016
3 commits
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Bool variable 'fail' is always non-negative, it indicates an error if it
is true.The problem has been detected using coccinelle script
scripts/coccinelle/tests/unsigned_lesser_than_zero.cocciSigned-off-by: Andrzej Hajda
Acked-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
In case of multicast address we need to set always the LOWPAN_IPHC_M bit
and if a destination context identifier was found for a multicast
address then we need to set the LOWPAN_IPHC_DAC as well.Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
This patch introduce support for IPHC stateful address compression. It
will offer the context table via one debugfs entry.
This debugfs has and directory for each cid entry for the context table.
Inside each cid directory there exists the following files:- "active": If the entry is added or deleted. The context table is
original a list implementation, this flag will indicate if the
context is part of list or not.
- "prefix": The ipv6 prefix.
- "prefix_length": The prefix length for the prefix.
- "compression": The compression flag according RFC6775.This part should be moved into sysfs after some testing time.
Also the debugfs entry contains a "show" file which is a pretty-printout
for the current context table information.Reviewed-by: Stefan Schmidt
Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann
20 Dec, 2015
1 commit
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This patches moves the debugfs interface related register after
netdevice register. The function lowpan_dev_debugfs_init will use
"dev->name" which can be before register_netdevice a format string.
The function register_netdevice will evaluate the format string if
necessary and replace "dev->name" to the real interface name.Reported-by: Lukasz Duda
Signed-off-by: Alexander Aring
Acked-by: Lukasz Duda
Signed-off-by: Marcel Holtmann
10 Dec, 2015
9 commits
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This patch will introduce a 6lowpan entry into the debugfs if enabled.
Inside this 6lowpan directory we create a subdirectories of all 6lowpan
interfaces to offer a per interface debugfs support.Reviewed-by: Stefan Schmidt
Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
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 -
Acked-by: Jukka Rissanen
Signed-off-by: Stefan Schmidt
Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
Acked-by: Jukka Rissanen
Signed-off-by: Stefan Schmidt
Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
Acked-by: Jukka Rissanen
Signed-off-by: Stefan Schmidt
Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
Acked-by: Jukka Rissanen
Signed-off-by: Stefan Schmidt
Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
Acked-by: Jukka Rissanen
Signed-off-by: Stefan Schmidt
Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
Acked-by: Jukka Rissanen
Signed-off-by: Stefan Schmidt
Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
Acked-by: Jukka Rissanen
Signed-off-by: Stefan Schmidt
Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann
21 Oct, 2015
8 commits
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This patch moves the mcast compression algorithmn to an own function
like all other compression/decompression methods in iphc.Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
This patch reworks the handling of compression/decompression of traffic
class and flow label handling. The current method is hard to understand,
also doesn't checks if we can read the buffer from skb length.I tried to put the shifting operations into static inline functions and
comment each steps which I did there to make it hopefully somewhat more
readable. The big mess to deal with that is the that the ipv6 header
bring the order "DSCP + ECN" but iphc uses "ECN + DSCP". Additional the
DCSP + ECN bits are splitted in ipv6_hdr inside the priority and
flow_lbl[0] fields.I tested these compressions by using fakelb 802.15.4 driver and
manipulate the tc and flow label fields manually in function
"__ip6_local_out" before the skb will be send to lower layers. Then I
looked up the tc and flow label fields in wireshark on a wpan and lowpan
interface.Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
This patch has the main goal to delete shift operations. Instead we
doing masks and equals afterwards. E.g. for the SAM evaluation we
masking only the SAM value which fits in iphc1 byte, then comparing with
all possible SAM values over a switch case statement. We will not
shifting the SAM value to somewhat readable anymore.
Additional this patch slighty change the naming style like RFC 6282,
e.g. TTL to HLIM and we will drop an errno now if CID flag is set,
because we don't support it.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 moves the iphc setting of next header commpression bit inside
iphc functionality. Setting of IPHC bits should be happen at iphc.c file
only.Signed-off-by: Alexander Aring
Signed-off-by: Marcel Holtmann -
This patch removes the lowpan_fetch_skb_u8 function for getting the iphc
bytes. Instead we using the generic which has a len parameter to tell
the amount of bytes to fetch.Signed-off-by: Alexander Aring
Acked-by: Jukka Rissanen
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