Commit graph

21541 commits

Author SHA1 Message Date
Vinayak Chettimada
83b7d1b8b7 Bluetooth: controller: Group dup filter Kconfig with buf options
Move the scan duplicate filter length option and group it along
with rx/tx buffer size Kconfig options.

Change-id: I3df07e667029c7d2571270db442ecb7241a417c2
Signed-off-by: Vinayak Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>
2017-04-10 09:08:34 +00:00
Johan Hedberg
71d0843c7d Bluetooth: conn: Pass disconnect error properly to the conn struct
The bt_conn_set_state() function will not notify the connected
callback of the connection error if conn->err isn't properly set.

Jira: ZEP-2005

Change-Id: Idc30e736f4d8ba00156bf5c0e37dcccdb151742f
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-04-10 08:20:53 +00:00
Youvedeep Singh
724fcffbef debug: Remove dependency of unsetting X86_IAMCU for CONFIG_DEBUG_INFO.
CONFIG_DEBUG_INFO was disabled for IAMCU targets. As per Jira update forked
arch/code is gone. So it should not block enabling DEBUG_INFO for IAMCU.

Currently CONFIG_DEBUG_INFO depends on (x86 = y && !X86_IAMCU)
CONFIG_DEBUG_INFO can not be set for IAMCU. this patch removes dependency.

Jira: ZEP-601

Change-Id: Ib5635096f83f7b931c277b667a55c6d54f8e946a
Signed-off-by: Youvedeep Singh <youvedeep.singh@intel.com>
2017-04-09 14:52:28 +00:00
Carles Cufi
923c470f5d Bluetooth: controller: Fix warning with no dup filter
Conditionally declare the iterator variable to avoid a warning when
compiling the controller without any duplicate filter entries.

Change-Id: I69e23d4c594db18172dc57d45e7925243fe2da69
Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>
2017-04-08 20:11:55 +03:00
Vinayak Chettimada
1a62acd00e Bluetooth: controller: Add BT 5.0 PDU structs
Add struct definitions for BT 5.0 PDUs, LL_PHY_REQ,
LL_PHY_RSP, LL_PHY_UPDATE_IND, and LL_MIN_USED_CHANNELS_IND.

Change-id: Ib54209cdf381ba53217eb425696c24d797fe0a30
Signed-off-by: Vinayak Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>
2017-04-08 20:11:54 +03:00
Johan Hedberg
d2ac4a263a Bluetooth: hci_ecc: Fix ECDH API usage
The main issue is that after the latest update to TinyCrypt the
ecc_make_key() API expects a twice as big random number. Fix this, but
also move the variables to the static context since we're limiting one
HCI command at a time. Also place the variables in a union based on
their temporal dependencies. Thanks to this, we can now further reduce
the ECC stack size by 40 bytes (on ARM this then reports 12 bytes of
unused stack after key-pair generation and DHKey calculation).

Change-Id: I1036e0ca15f7c08063cba9e568d7df99e65c9156
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-04-08 20:11:54 +03:00
Carles Cufi
9a9699ebdb Bluetooth: controller: Implement event masks
HCI event masking allows the host to choose which events are reported to
it to avoid interruption and excessive traffic. This patch implements
masking to drop any non-enabled events as specified by the host.

Jira: ZEP-1769

Change-Id: If09d4aa22b0da8f743fc42a3b0db3f369daaff96
Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>
2017-04-08 20:11:54 +03:00
Carles Cufi
27e83660ff Bluetooth: controller: Implement scan duplicate filter
Implement the controller's ability to drop duplicate advertising reports
when instructed by the Host.

Jira: ZEP-1246

Change-Id: I2d1b7abf1ed950dde705e5df30a858c595f3834c
Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>
2017-04-08 20:11:54 +03:00
Vinayak Chettimada
7c22073195 Bluetooth: controller: Make worker and job priority configurable
Add Controller advanced Kconfig options to select IRQ
priorities of the Radio, Ticker's Worker and JOB IRQs.

This will provide an opportunity to have peripheral IRQ's
of higher level than Bluetooth Controller.

Change-id: Iaa128c1cd64a309a77d42d485fdefe68f31e4895
Signed-off-by: Vinayak Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>
2017-04-08 20:11:54 +03:00
Vinayak Chettimada
1277eea15e Bluetooth: controller: Remove util/config.h
Remove util/config.h and unnecessary redefinitions of
caller ids.

Change-id: I85bb9ae3ab7ff9fcce18c886cfa3e33c91ebb670
Signed-off-by: Vinayak Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>
2017-04-08 20:11:54 +03:00
Vinayak Chettimada
2de3cc95be Bluetooth: controller: Move nRF5 specific debug pins to hal/nrf5
Move the nRF5 specific GPIO debug pin macro definitions to
hal/nrf5/debug.h.

The Controller's hal folder contains prototypes and
hal/<soc> shall contain SoC specific implementation to
realize a software-based Link Layer.

Change-id: Ic7bf283f926bbc3069e7d15c047fe93a6daa894f
Signed-off-by: Vinayak Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>
2017-04-08 20:11:54 +03:00
Vinayak Chettimada
698de88916 Bluetooth: controller: Cleanup redundant ticker busy loop
Cleanup redundant ticker busy loop that could hang if the
worker and job IRQ priority levels are misconfigured, and
job gets disabled before all users/mayfly functions using
job complete.

Change-id: I053ad75a4328c51cfe651b820a2fa961e42ae48f
Signed-off-by: Vinayak Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>
2017-04-08 20:11:54 +03:00
Vinayak Chettimada
cced2aea30 Bluetooth: Permit connectionless host-controller combined build
In a host plus controller combined build, if no connection
is required, deselect CONFIG_BLUETOOTH_MAX_CONN. This will
reduce RAM and ROM usage in the controller.

Also, make BLUETOOTH_PERIPHERAL, BLUETOOTH_CENTRAL and
BLUETOOTH_CONN switches accessible by the controller kconfig
to select the right roles to enable.

Change-id: I164cf696ab2a6f4859086d2cb18f6d3f2b1399d3
Signed-off-by: Vinayak Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>
2017-04-08 20:11:54 +03:00
Vinayak Chettimada
981f2d3fdb Bluetooth: Compile BR/EDR independent of BLUETOOTH_CONN check
BR/EDR sources that was compiled under BLUETOOTH_CONN
if-clause is moved out as independent conditional
compilation based on selected BR/EDR feature support.

Change-id: Iedfafc6056132654a9150ed235b245f8be62b4b1
Signed-off-by: Vinayak Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>
2017-04-08 20:11:54 +03:00
Johan Hedberg
563fdd784b Bluetooth: SMP: Remove redundant ';'
Change-Id: I889b1768c40b630e00c9856630001dbf7557abba
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-04-08 20:11:54 +03:00
Sathish Narasimman
9d7552f8f6 Bluetooth: AT: Fix - chance of missing UNSOLICITED state
If during hfp_hf_send response callback is not filled with NULL
and you receive unsolicited callback. which will not be taken care.
This patch fixes this issue.

Change-Id: I04007059d62273b9cdddf29e2d4a9086b07a01e5
Signed-off-by: Sathish Narasimman <sathish.narasimman@intel.com>
2017-04-08 20:11:54 +03:00
Sathish Narasimman
9319e441b8 Bluetooth: HFP HF: Support to send hf AT command
A initiation to send AT commands is given in the application
with prefered AT command as the argument.
This patch supports to send the command within the profile stack.

Change-Id: Id5caa3ce64070fc17e60f4ea61a8c83a961099ba
Signed-off-by: Sathish Narasimman <sathish.narasimman@intel.com>
2017-04-08 20:11:54 +03:00
Luiz Augusto von Dentz
a91238aca6 Bluetooth: L2CAP: Fix accounting SDU header len as data
This cause packets that are up to 2 bytes off segment maximum length
to be considered transmitted when in fact that could be some bytes left
to be transmitted which cause any subsequent packet to trigger invalid
SDU on the remote end:

[ 3612.376068] l2cap_le_data_rcv:6757: SDU fragment. chan->sdu->len 66 skb->len 68 chan->sdu_len 67
[ 3612.376073] Bluetooth: Too much LE L2CAP data received

Change-Id: Id2f3469ce1c0b27bb87c4d5bc18e6ede9d93dbde
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2017-04-08 20:11:54 +03:00
Vinayak Chettimada
5f69bde72b Bluetooth: Kconfig: Move BLUETOOTH_MAX_SCO_CONN to BR/EDR
Move the Kconfig option BLUETOOTH_MAX_SCO_CONN to BR/EDR if
clause.

Change-id: Iead2bc5a70a9499125f9edf22e85ade4dda8f5ac
Signed-off-by: Vinayak Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>
2017-04-08 20:11:54 +03:00
Vinayak Chettimada
2d6b82d44d Bluetooth: Kconfig: Group HCI_RAW related options
Move the BLUETOOTH_UART_TO_HOST_DEV_NAME options to after
BLUETOOTH_HCI_RAW option to group it together in the
Kconfig while using menuconfig.

Change-id: I21da080a5ffa30a08b1a1aa148ce8116e63a3c18
Signed-off-by: Vinayak Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>
2017-04-08 20:11:54 +03:00
Vinayak Chettimada
74cddf9393 Bluetooth: Kconfig: Group stack size related options
Group the stack size related options together to represent a
better order when using menuconfig.

Change-id: Id2968607e5054e30029c42987b3e70cb8cbfc74d
Signed-off-by: Vinayak Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>
2017-04-08 20:11:54 +03:00
Vinayak Chettimada
ddba873aae Bluetooth: Kconfig: Move BLUETOOTH_CONTROLLER to Controller file
Move the Kconfig BLUETOOTH_CONTROLLER switch from top-level
Bluetooth Kconfig to Bluetooth Controller Kconfig.

Change-id: Iead760c22a0fbbda11e4558c4943b3366ecc8769
Signed-off-by: Vinayak Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>
2017-04-08 20:11:54 +03:00
Luiz Augusto von Dentz
57a99f6b7a Bluetooth: GATT: Be consistent with error in case SMP is disabled
This makes the code consistent with respect of errors, so instead of
checking directly on bt_gatt_write_without_response let this up to
bt_smp_sign.

Change-Id: Iea8d0bd2020df427b7542e2878ce8d9fd8b94170
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2017-04-08 20:11:54 +03:00
Johan Hedberg
757fd755a6 Bluetooth: Remove unnecessary controller-side buffers tracking
When there's no support for connections there's also no need to track
the controller side buffers.

Change-Id: I7eac3af486f139f1ab32efda8ccfa188ed8359eb
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-04-08 20:11:54 +03:00
Luiz Augusto von Dentz
3136aa2ced Bluetooth: GATT: Fix using write command when signing was requested
Checking both if signing has been requested _and_ conn->encrypt can
bypass signing leading to the caller to assume that a proper signature
was send in when fact it was not.

To fix now the code explicitly checks if SMP is enabled and in case it
is and signing was requested fails.

Change-Id: Ie17df4a4c2191f2da0172c687db7999395839a97
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2017-04-08 20:11:54 +03:00
Johan Hedberg
dd1ba28726 Bluetooth: Controller: Introduce rate-limiting on stack analysis
In case the controller is receiving PDUs very rapidly, prevent it from
spamming the logs by limiting its stack analysis to at most once every
5 seconds.

Change-Id: I31c70d28e8af62b27172a4a77bf6e614ea3e20eb
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-04-08 20:11:54 +03:00
Vinayak Chettimada
b593e44da6 Bluetooth: controller: Move comp id and subver to configuration
Move company id and subversion number Kconfig to the
Controller configuration section from the features section.

Change-id: Ic4deb8b24d84d9b1817ba542705eebd612f0e020
Signed-off-by: Vinayak Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>
2017-04-08 20:11:54 +03:00
Vinayak Chettimada
16bd3d48db Bluetooth: controller: Hide advance features in Kconfig
Added a explicit Kconfig option to show the Controller's
advanced feature configurations. These feature
configurations need specific in-depth Controller
implementation knowledge and should not overwhelm normal
users of the Controller.

Change-id: Iae764f2b266b199cf180936c51c7a4ea089ee510
Signed-off-by: Vinayak Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>
2017-04-08 20:11:54 +03:00
Vinayak Chettimada
f38d57cba3 Bluetooth: controller: Kconfig option for advanced scheduling
Add Kconfig option to enable advanced scheduling in the
controller.

Enable non-overlapping placement of observer, initiator and
master roles in timespace. Uses window offset in connection
updates and uses connection parameter request in slave role
to negotiate non-overlapping placement with active master
roles to avoid slave roles drifting into active master
roles in the local controller.

This feature maximizes the average data transmission amongst
active concurrent master and slave connections while other
observer, initiator, master or slave roles are active in the
local controller.

Disabling this feature will lead to overlapping role in
timespace leading to skipped events amongst active roles.

Change-id: I16e4e6c3ca99f93987ab86924af0cb9d76bdbc7e
Signed-off-by: Vinayak Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>
2017-04-08 20:11:54 +03:00
Johan Hedberg
9028e8e75b Bluetooth: ECC: Fix command status emission from wrong thread
HCI drivers are obliged to send HCI Command Status/Complete events
from a separate context than all other data, however the ECC wrapper
was violating this rule (sending everything from the same ECC thread).
This could lead to a deadlock if e.g. the ECC API user decides to
generate a DHKey from the same callback that it got notified of local
key-pair generation.

The obvious solution is to emit the Command Status directly from the
send function, before passing the command to be processed by the ECC
therad (through a k_fifo). However, this is not quite so simple since
bt_buf_get_cmd_complete() reuses the original command buffer, meaning
we'd loose the original parameters after sending a Command Status.

To work around this limitation with bt_buf_get_cmd_complete() we stop
passing the command buffer to the thread and instead store the
parameters in static variables and do the thread communication using
flags and a semaphore. One side effect is that only one command can be
pending at a time, however that works out fine for all of the users of
ECC.

A nice side effect of moving some things to static variables is that
we end up reducing call stack usage in the ECC thread, allowing it to
be shrunk by 180 bytes (verified to be sufficient for both ARM and
x86 boards).

Change-Id: Ic41f0316d3fe4d14b64fd3d0a549b221d168411a
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-04-08 20:11:54 +03:00
Vinayak Chettimada
646726518f Bluetooth: controller: Kconfig for advanced event preparation
Added Kconfig option to enable advanced event preparation
feature.

Enables advanced event preparation offset ahead of radio
tx/rx, taking into account predictive processing time
requirements in preparation to the event, like control
procedure handling and CPU execution speeds. Crystal
oscillator is retained between closely spaced consecutive
radio events to reduce the overall number of crystal
settling current consumptions.

This feature maximizes radio utilization in an average role
event timeslice when they are closely spaced by using a
reduced offset between preparation and radio event.

By disabling this feature, the controller will use a
constant offset between the preparation and radio event. The
controller will toggle crystal oscillator between two
closely spaced radio events leading to higher average
current due to increased number of crystal settling current
consumptions.

Change-id: I19e640f7395ac7938873ef4bfac38acf8d6f7e0e
Signed-off-by: Vinayak Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>
2017-04-08 20:11:54 +03:00
Johan Hedberg
46e649c536 Bluetooth: monitor: Add support for logging packet drops
The monitor protocol provides support for logging packet drops with
the help of the extended monitor header. Implement support for this.

Change-Id: I7ef7894816cb8d1bd876842d0253ef0980471e69
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-04-08 20:11:54 +03:00
Sathish Narasimman
1f5a809178 Bluetooth: HFP HF: Add support for RING indication cb
This patch adds support for incoming RING indication callback to
notify application.

> ACL Data RX: Handle 256 flags 0x02 dlen 16   [hci0] 167174.600312
      Channel: 65 len 12 [PSM 3 mode 0] {chan 1}
      RFCOMM: Unnumbered Info with Header Check (UIH) (0xef)
         Address: 0x0b cr 1 dlci 0x02
         Control: 0xef poll/final 0
         Length: 8
         FCS: 0x9a
        0d 0a 52 49 4e 47 0d 0a 9a                       ..RING...

Change-Id: I0469590a77d619f2a842df647d84f4d56dbd4883
Signed-off-by: Sathish Narasimman <sathish.narasimman@intel.com>
2017-04-08 20:11:54 +03:00
Johan Hedberg
19d740c162 Bluetooth: monitor: Drop data instead of holding IRQ lock for long
The IRQ lock should never be held for long periods of time. Instead of
using the IRQ lock to prevent monitor protocol corruption simply drop
the data. Follow-up patches will add additional drop count tracking so
that these get reported properly over the protocol.

Change-Id: If498125b29f1b58bed676c78ad2062e2aa206318
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2017-04-08 20:11:54 +03:00
Sathish Narasimman
86d64b4f92 Bluetooth: HFP HF: Lookup table for unsolicited commands
Using lookup table to search for unsolicted command and its
handler function.

Change-Id: Id677dad3918d7187e0065ada2985ec12a97f8ed9
Signed-off-by: Sathish Narasimman <sathish.narasimman@intel.com>
2017-04-08 20:11:54 +03:00
Jukka Rissanen
749b439863 net: icmpv6: Print received packet type as string
This helps debugging as printable string of the ICMPv6 type is
printed when packet is received if debugging is active.

Change-Id: I22b84bb6b28db7fba030699af3e561a0775b53d2
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
2017-04-07 18:32:19 +03:00
Tomasz Bursztyka
8bbe03f35b net/core: Fix wrong parameter usage for check_unknown_option()
It requires a net_nbuf, so the actual buf, and not a frag here.

Change-Id: I4fd888c9a91f5e3f3dd664ae5e3bf93f90a2f597
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
2017-04-07 18:32:19 +03:00
Jukka Rissanen
3e99c2ea0c net: Move IPv4 packet handling from net_core.c to ipv4.c
This will refactor net_core.c and move IPv4 specific code
into ipv4.c which is a more logical place for it.

Change-Id: Ia60c5bfec488d2d1a664f113dc3df88e7d5badd1
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
2017-04-07 18:32:18 +03:00
Jukka Rissanen
d43494d187 net: Move IPv6 packet handling from net_core.c to ipv6.c
This will refactor net_core.c and move IPv6 specific code
into ipv6.c which is a more logical place for it.

Change-Id: I5bbecbb760111326b9a6bbef5802c53d7f6efda9
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
2017-04-07 18:32:18 +03:00
Tomasz Bursztyka
1ab40390c9 net/arp: Return relevant verdict if the ARP packet was consumed
DROP is only on error case, here it should return NET_OK if it was a
proper ARP packet and it got properly handled.

Change-Id: If347e80a76b3a56a9455b70d11b735c1fd910117
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
2017-04-07 18:32:18 +03:00
Luiz Augusto von Dentz
4d1115ab35 net: Enable context buffer pool in case TCP and 6LO are enabled
The context buffer pool was introduced to deal with TCP holding buffers
when 6LO may modify them, therefore it makes sense to have it enabled
by default when TCP and 6LO are enabled given that the code can deal
with NULL pool in case the application don't implement one.

Change-Id: I600ca31ab40c96ee27937c2e885e332b0cee4995
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2017-04-07 18:32:18 +03:00
Luiz Augusto von Dentz
c53b43e4d5 net: ip: Increase RX stack size
RX stack overflow when dealing with TCP over Bluetooth/6lo setup:

RX [rx_stack] stack size 1200/1264 bytes unused 0 usage 1200/1200 (100 %)

Change-Id: I8d5e43faf93f675960e59d9340b97d1ce9fc082a
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2017-04-07 13:33:55 +03:00
Luiz Augusto von Dentz
1f4f8f65cb net: buf: Add CONFIG_NET_BUF_WARN_ALLOC_INTERVAL
CONFIG_NET_BUF_WARN_ALLOC_INTERVAL can be used to configure the interval
used to print allocation warnings.

Change-Id: I914f2e0d43b3f00c201e49ff42a45fa950b2df94
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2017-04-07 13:33:55 +03:00
Ravi kumar Veeramally
8ce12d5fe8 net: shell: Fix crash when retrieving remaining reachable time
Shell crashes if you try to retrieve IPv6 nbr reachable time
when CONFIG_NET_IPV6_ND is disabled.

Change-Id: I3c5b3b5614abf80373b892943fa1ab936d235f3c
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
2017-04-07 12:35:51 +03:00
Ravi kumar Veeramally
7a6f976725 net: rpl: Return valid verdict
Return proper verdict on handling of DIS messages. Otherwise debug
prints will be confusing that packet dropped.

Change-Id: Ia4e18d6238868e3aed4b17e2c9ea11aa432869be
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
2017-04-07 12:35:51 +03:00
Ravi kumar Veeramally
7ff7f58771 net: rpl: Refactor few rpl functions
No functionality changes, just refactored few rpl functions to
to align nicely.

Change-Id: I05c0397de7a8392cc781de2747802b2dd1bb8146
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
2017-04-07 12:35:51 +03:00
Luiz Augusto von Dentz
22acec357e net: buf: Reduce verbosity of net_buf_get
Don't assume NULL returns are always errors.

Change-Id: I28d7a0fa6c848e338635010b1fdc9fc3e8440b27
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2017-04-07 12:35:51 +03:00
Luiz Augusto von Dentz
7cdb750539 net: buf: Generate periodic warnings for allocation that takes too long
This might indicate buffer leaks or deadlock is happening.

Change-Id: If91a65ccfe1be9497b210de21e80b533b6739367
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2017-04-07 12:35:51 +03:00
Paul Sokolovsky
a745832dc4 net: Elaborate output of net_nbuf_print_frags() to be more useful.
Following changes are made:

1. Output using NET_INFO logging level. This function is not part of
automatic logging, and must be called explicitly by a user application.
But if it outputs using NET_DEBUG, then DEBUG level needs to be
enabled, and the output of this function will be drowned in logging
spam. So, let user to enable just INFO level.

2. Show entire structure of the fragment chain, *including* the head
net_buf which holds net_nbuf structure. It is numbered as -1 in the
output to preserve existing order (and not change existing size
calculations).

3. Show owning pool (and its properties, like buffer size/user_data
size) for each buffer.

4. Check for NULL pointer, e.g. for convenience of calling directly
from net_context receive callback (which will be called with NULL
on TCP peer closed connection event).

With these changes, a newcomer from one look at the output of this
function will be able to have a clear basic picture of network
buffer management in Zephyr, and recurring user will be able to
recall any details at once.

Change-Id: I8f9562748329d749f765cc6af7989a448256d7e0
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
2017-04-07 12:35:50 +03:00
Ravi kumar Veeramally
2a00f418f0 net: rpl: Refactor net_rpl_update_header function
No functionality changes, just refactored net_rpl_update_header
function to align nicely.

Change-Id: I5b3e099593bb964245ca06c9fb2ec85859a0640c
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
2017-04-07 12:35:50 +03:00