Commit Graph

151 Commits

Author SHA1 Message Date
Kumar Gala 91e9f87499 libc: attribute minimal libc printf style functions with __printf_like
Add __printf_like attribute to printf style functions in minimal libc to
enable the compiler checking this provides.  We fixup the associated
issues that are now found by utilizing these checks.

Change-Id: I74ac0d0345782463d9fb454f7161d6b4af211ba5
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2017-03-02 08:46:30 -06:00
Leandro Pereira 1b8f824975 libc: Add isalnum() to ctype.h
The isalnum() primitive is used by the NATS protocol implementation to
vaildate some of the inputs.

This uses primitives that were already in place.

Change-Id: Ib53eeb7ae002a42f5b6aa8d4fc61baca029a042d
Signed-off-by: Leandro Pereira <leandro.pereira@intel.com>
2017-02-17 20:39:44 +00:00
Anas Nashif 15a6598691 Merge "Merge remote-tracking branch 'origin/core'" 2017-02-15 04:33:25 +00:00
Sergio Rodriguez f054d3e897 libc/include: Adding time.h
Dummy time.h to fulfill the compilations requirements of certain
libraries i.e. mbedTLS

Change-Id: I07e66dbf07337b935dabe9eecdf1be3850bbf394
Signed-off-by: Sergio Rodriguez <sergio.sf.rodriguez@intel.com>
2017-02-14 08:30:35 +02:00
Mazen NEIFER 44a98fb5fd Xtensa port: Fixed defintion of MAX_HEAP_SIZE, thus, compilation of new_lib.
Xtensa linker script defines _heap_sentry which helps computing the heap size.

Change-Id: Ic35db3c98aaaebe575370fb5479de1a58e6e441e
Signed-off-by: Mazen NEIFER <mazen@nestwave.com>
2017-02-13 11:39:02 -08:00
Anas Nashif cebc7f95aa newlib: make sure the chain of includes has generated_dts_board.h
Change-Id: I2021a30e1bc16e3eb9fdcc793b908bd0e610d01d
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2017-02-11 07:00:39 +00:00
Andy Gross c30b400a16 libc-hooks: Fix include file for arch ARM
This patch adds in the include to get the CONFIG_SRAM definitions on
systems which are using device tree generation.

Change-Id: Ie61efbcdfc900a2c682a2fb8bbaecb61071a20f8
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-02-10 23:42:31 +00:00
Andrew Boie c2a91b1b2e libc: minimal: rename private macro
As it turns out Xtensa SDK headers also define _Restrict, causing
havoc. As this was intended to be a private macro, rename it to something
less likely to cause a collision.

Change-Id: I0a7501a1af8cf87efb096872a91a7b44bd2bbdca
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2017-02-04 19:22:07 +00:00
Marcus Shawcroft 458e2ed133 libc/minimal: Fix definition of ssize_t
Each GCC target backend is at liberty to define its own SIZE_TYPE. GCC
uses this for various purposes, not lease it drives the machinery that
spits out format specifier diagnostics when format specifiers are
applied to objects with inappropriate type.  GCC exposes the current
definition of SIZE_TYPE via the preprocessor symbol __SIZE_TYPE__.
The GCC build processes also generates various standard library header
files that directyle expose stanard types in a form consistent with
the current configuration of GCC.  Conventionally standard library
build processes (for glibc and newlib) pick up the header files
generated by the GCC build.

In the minimal libc we have no such build process, we don't pick up
the header files that the GCC build process generated.  Instead we
define our own alternative header files and align them with GCC
manually.

The current definition of ssize_t in minimal libc is out of step with
GCC which means that any use of the %z[du] format modifier will issue
a diagnostic.

We replace the open coded architecture detection in minimal libc and
use GCCs __SIZE_TYPE__ directly.

Change-Id: I63b5e17bee4f4ab83d49e492e58efd3bafe76807
Signed-off-by: Marcus Shawcroft <marcus.shawcroft@arm.com>

tests: fs: Fix printf warning when using newlib

Current code uses %ld format specifier to print data of
type ssize_t. This causes type warnings when built with
newlib. The correct format specifier to be used for
ssize_t is %zd.

Change-Id: I02a3c628e3d6e8a36a09cd694220406d8faf1730
Signed-off-by: Ramesh Thomas <ramesh.thomas@intel.com>
2017-02-01 13:57:43 -08:00
David B. Kinder ac74d8b652 license: Replace Apache boilerplate with SPDX tag
Replace the existing Apache 2.0 boilerplate header with an SPDX tag
throughout the zephyr code tree. This patch was generated via a
script run over the master branch.

Also updated doc/porting/application.rst that had a dependency on
line numbers in a literal include.

Manually updated subsys/logging/sys_log.c that had a malformed
header in the original file.  Also cleanup several cases that already
had a SPDX tag and we either got a duplicate or missed updating.

Jira: ZEP-1457

Change-Id: I6131a1d4ee0e58f5b938300c2d2fc77d2e69572c
Signed-off-by: David B. Kinder <david.b.kinder@intel.com>
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2017-01-19 03:50:58 +00:00
Anas Nashif 9f418fe944 libc: add support for risc v
Change-Id: Iaaf87ef48057c52478816771836d8d40b2b05554
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2017-01-13 19:57:19 +00:00
Jean-Paul Etienne 716d25e1e2 libc-hooks: added USED_RAM_SIZE and MAX_HEAP_SIZE definitions for riscv32
added USED_RAM_SIZE and MAX_HEAP_SIZE definitions for
SOC_RISCV32_QEMU and SOC_RISCV32_PULPINO.

Otherwise, not passing sanitycheck

Change-Id: Ia32b12e1694dc472e9f7f9eb10c5f2e12e928c3a
Signed-off-by: Jean-Paul Etienne <fractalclone@gmail.com>
2017-01-13 19:56:44 +00:00
Flavio Santes ac7300611c net: Restructure network protocols
This commit restructures the network protocols. Changes applied are:

- Move lib/iot/ to subsys/net/lib
- Move network protocol headers to include/net
- Move lib/iot/zoap/link-format.h to include/net/zoap_link_format.h
  and link-format.c to zoap_link_format.c
- Move tests/iot/ to tests/net/lib/
- Adapt sample code
- Adapt build system
- Modify doxygen paths

Change-Id: I37085fa4cc76a8a8e19a499ecb4e87b451120349
Signed-off-by: Flavio Santes <flavio.santes@intel.com>
2017-01-02 10:03:19 +01:00
Vinicius Costa Gomes 909ad359bf lib/zoap: Fix incorrect values for payload size
When retrieving the payload length of the payload, there was a mistake,
what was already in the buffer (buf->len) was being considered twice,
net_buf_tailroom() already takes buf->len into account, resulting in
incorrect values.

Change-Id: I3b78d55abca4a448cab5e035b9d66352a3c59110
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
2017-01-02 10:03:18 +01:00
Flavio Santes 44b2f212a1 iot/dns: Use a k_sem for the DNS rx routine
This patch introduces a k_sem that will block until:
- data is received, or
- the user-provided timeout expires

This change allows us to simplify our previous DNS client
implementation.

This change is related to ZEP-1357 because we are refactoring the
DNS client API removing the continuous update of the net_context_recv
routine that seems to be causing issues after the kernel's update.

Jira: ZEP-1357

Change-Id: If01c9274ac8f096f0095a2872f86be2e007212ee
Signed-off-by: Flavio Santes <flavio.santes@intel.com>
2016-12-16 19:14:53 +01:00
Flavio Santes 5d0900ea93 iot/dns: Update DNS client private routines
This commit updates some DNS client private routines to simplify
function signatures and reduce stack usage. Updated routines now
use the dns_context structure.

Change-Id: Ic0d347ea9d610e85eed4179aee08955cf2302436
Signed-off-by: Flavio Santes <flavio.santes@intel.com>
2016-12-16 19:14:52 +01:00
Flavio Santes 0d257a009a iot/dns: Introduce the dns_context structure
This commit introduces the dns_context structure.

This new structure will reduce stack overhead due to
the simplication of the dns_resolve routine signature.

Furthermore, the timeout parameter is now int32_t
instead of uint32_t.

The dns sample application is also updated.

Change-Id: I5d789656bacbd23c4654edce5d116a88dc42c354
Signed-off-by: Flavio Santes <flavio.santes@intel.com>
2016-12-16 19:14:52 +01:00
Anas Nashif fe958df4dd libc: rework libc selection and reduce Kconfigs
Moved all libc Kconfigs to where the code is and remove the default
Kconfig for selecting the minimal libc. Minimal libc is now the default
if nothing else is configured in.

Removed the options for extended libc, this obviously was restricting
features in the minimal libc without a good reason, most of the
functions are available directly when using newlib, so there is no
reason why we need to restrict those in minimal libc.

Jira: ZEP-1440
Change-Id: If0a3adf4314e2ebdf0e139dee3eb4f47ce07aa89
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2016-12-15 22:31:28 +00:00
Johan Hedberg 71c7c01819 net: buf: Remove the need for net_buf_pool_init()
In order to keep the initialization process light-weight, remove
net_buf_pool_init() and instead perform the initialization of the pool
and buffers in a "lazy" manner. This means storing more information
in the pool, and removing any 'const' members from net_buf. Since
there are no more const members in net_buf the buffer array can be
declared with __noinit, which further reduces initialization overhead.

Change-Id: Ia126af101c2727c130651b697dcba99d159a1c76
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2016-12-15 09:58:02 +02:00
Stig Bjørlykke 4ca8ca9b1c iot/mqtt: Fix rlen_decode size check.
If receiving a malformed MQTT packet with less than 5 bytes it's
possible to get a read one byte behind buf.

Change-Id: I34425add57c937c8fd9df5bf7b72af092d6f5f32
Signed-off-by: Stig Bjørlykke <stig@bjorlykke.org>
2016-12-14 22:09:19 +01:00
Johan Hedberg c3e08c8fea net: buf: Redesigned pool & buffer allocation API
Until now it has been necessary to separately define a k_fifo and
an array of buffers when creating net_buf pools. This has been a bit
of an inconvenience as well as blurred the line of what exactly
constitutes the "pool".

This patch removes the NET_BUF_POOL() macro and replaces it with a
NET_BUF_POOL_DEFINE() macro that internally expands into the buffer
array and new net_buf_pool struct with a given name:

	NET_BUF_POOL_DEFINE(pool_name, ...);

Having a dedicated context struct for the pool has the added benefit
that we can start moving there net_buf members that have the same
value for all buffers from the same pool. The first such member that
gets moved is the destroy callback, thus shrinking net_buf by four
bytes. Another potential candidate is the user_data_size, however
right not that's left out since it would just leave 2 bytes of padding
in net_buf (i.e. not influence its size). Another common value is
buf->size, however that one is also used by net_buf_simple and can
therefore not be moved.

This patch also splits getting buffers from a FIFO and allocating a
new buffer from a pool into two separate APIs: net_buf_get and
net_buf_alloc, thus simplifying the APIs and their usage. There is no
separate 'reserve_head' parameter anymore when allocating, rather the
user is expected to call net_buf_reserve() afterwards if something
else than 0 headroom is desired.

Change-Id: Id91b1e5c2be2deb1274dde47f5edebfe29af383a
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2016-12-13 21:41:53 +00:00
Flavio Santes b965fb5ff1 iot: Add HTTP support for Zephyr
This commit adds HTTP message handling support for Zephyr.
So, no network routines are involved at this level.

To add HTTP message handling support for Zephyr, we explored the
following options:

1. Importing an external project and perhaps adapting it to fit our
   requirements.
   The criteria to pick one codebase among all the available projects
   are: licensing, correctness and performance.

2. Writing our own implementation from scratch.

We decided to import an external project instead of implementing our
own parser, mainly due to code maturity and correctness. It could take
more time to obtain a production-ready parser from scratch than adapting
a state-of-art library.

The following is a list of some projects offering similar functionality.

lighttpd (many files)
	* License: revised BSD license
	* Supported: active
	* Comments: this parser can't be integrated to Zephyr due to
	  dependencies that currently are not satisficed by our SDK.

nginx (src/http/ngx_http_parse.c)
	* License: 2-clause BSD-like
	* Supported: very active
	* Comments: this parser can't be integrated to Zephyr due to
	  dependencies that currently are not satisficed by our SDK.

wget (src/http-parse.c)
	* License: GPL 3.0
	* Supported: very active
	* Comments: this code can't be included in Zephyr due to
	  licensing issues

curl (lib/http.c)
	* License: MIT/X derivate, see:
	  https://curl.haxx.se/docs/copyright.html
	* Supported: very active
	* Comment: it must be forked and adapted to run in Zephyr.
	  It is not optimized for low-power devices.

nodejs http-parser (http_parser.c)
	* License: nginx license (2-clause BSD-like) and MIT license
	* Supported: very active
	* Comments: optimized with performance in mind.
	  From https://github.com/nodejs/http-parser: "It does
	  not make any syscalls nor allocations, it does not buffer data,
	  it can be interrupted at anytime. It only requires about 40
	  bytes of data per message stream."

So, nodejs/http-parser looks a very good choice for Zephyr. In this
commit, we integrate nodejs' parser to Zephyr.

Origin: https://github.com/nodejs/http-parser/releases/tag/v2.7.1
        https://github.com/nodejs/http-parser/archive/v2.7.1.tar.gz

NOTE:
	This patch reformats the http_parser files to reduce checkpatch
	warnings. Changes made in this refactoring are available at:
Repo:	https://gitlab.com/santes/http_parser/commits/refactoring1
Commit:	9ccfaa23f1c8438855211fa902ec8e7236b702b1

Jira: ZEP-346
Jira: ZEP-776

Change-Id: I29b1d47f323a5841cd4d0a2afbc2cc83a0f576f0
Signed-off-by: Flavio Santes <flavio.santes@intel.com>
2016-12-02 12:41:20 +02:00
Vinicius Costa Gomes b1749afbc2 iot/zoap: Increase the range of timeouts
To avoid the risk of overflowing when dealing with retransmission
timeouts, increase the size of their representation to 32-bits.

Change-Id: I7c9c1e00c41f5ba75e19b0fd4527f273852eb85f
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
2016-12-02 12:41:12 +02:00
Flavio Santes d37b9fa9b5 iot/mqtt: Add the MQTT high-level API
This commit adds the MQTT high-level API with Quality-of-Service
support. The following MQTT messages are covered by this commit:

CONNECT (tx), DISCONNECT (tx), PUBACK (tx, rx), PUBCOMP (tx, rx),
PUBREC (tx, rx), PUBREL (tx, rx), PUBLISH (tx), PINGREQ (tx),
SUBSCRIBE (tx), UNSUBSCRIBE (tx), CONNACK (rx), PINGRESP (rx),
SUBACK (rx) and UNSUBACK (rx).

Where 'tx' stands for transmission: routines that create and send
messages. 'rx' stands for reception: routines that receive an RX
buffer from the IP stack and parse the MQTT mesage contained in
that buffer.

Jira: ZEP-365
Jira: ZEP-591
Jira: ZEP-856

Change-Id: Ibee701a298127eb713aa3fde5aaf7d089ecd1b9d
Signed-off-by: Flavio Santes <flavio.santes@intel.com>
2016-12-02 12:41:09 +02:00
Vinicius Costa Gomes 30dec49fd8 iot/zoap: Remove unnecessary cflags
These cflags were only needed when using the old network stack.

Change-Id: I660e397b2648137450c45d4f2edc8ec6ec7ae774
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
2016-12-02 12:41:05 +02:00
Vinicius Costa Gomes ac152ea884 iot/zoap: Add support for RFC6690 link format
RFC6690[1] defines a lightweight format for listing and querying
resources and their relationships.

The RFC defines an '.well-known/core' resource that will list the
resources and their associated metadata. It also allows resources to
filtered by their attributes.

The implementation uses the fact that resources are organized in an
array: only the resources present in the array after the
"ZOAP_WELL_KNOWN_CORE_RESOURCE" will be considered, this allows a
primitive form of visibility control for the attributes.

[1] https://tools.ietf.org/html/rfc6690

Change-Id: I2bc21ddf45f20e1f749d8ac36d247474fdaa9d64
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
2016-12-02 12:41:05 +02:00
Vinicius Costa Gomes ec184107be zoap: Add support for retrieving the underlying net_buf
Add an alternative to zoap_packet_get_payload(), that instead of
returning a byte array, returns the net_buf (with the COAP_MARKER
added, if needed) associated with the packet, positioned so the
application can add more data.

Change-Id: I7c955ef42f5ef8406d77da994d1673e6a69b0b6b
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
2016-12-02 12:41:05 +02:00
Flavio Santes 699083140e iot: Add MQTT v3.1.1 packet handling support for Zephyr
This commit adds support for the MQTT protocol v3.1.1.
Specifically, this commit allows a Zephyr application to create
the following MQTT messages:

CONNACK, CONNECT, PUBLISH, PUBACK, PUBREC, PUBREL, PUBCOMP, UNSUBACK,
SUBSCRIBE, SUBACK, UNSUBSCRIBE, PINGREQ, PINGRESP, and DISCONNECT.

Furthermore, the following messages can be parsed by the routines
provided by this commit:

CONNACK, CONNECT, PUBLISH, PUBACK, PUBREC, PUBREL, PUBCOMP, UNSUBACK,
SUBSCRIBE, SUBACK, PINGREQ, PINGRESP and DISCONNECT.

NOTE: client behavior (routines with network access) and QoS will be
integrated in future patches.

The MQTT v3.1.1 specification can be found at:

  http://docs.oasis-open.org/mqtt/mqtt/v3.1.1/mqtt-v3.1.1.html

Origin: Original

Jira: ZEP-365
Jira: ZEP-591
Jira: ZEP-856

Change-Id: Ie0c179370cea22f7554564692bc426a8d5c419d2
Signed-off-by: Flavio Santes <flavio.santes@intel.com>
2016-12-02 12:41:03 +02:00
Ravi kumar Veeramally c689fd6f1a net: Rename net_nbuf_write to net_nbuf_append
Current net_nbuf_write() api just appends data to last fragment. And
doesn't write data based on offset. That's why renaming this api.

New net_nbuf_write() apis based on offset will be coming soon.

Change-Id: Ie8e13e5f6091a279b62b6d8b0b3928a5187e75b0
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
2016-12-02 12:40:51 +02:00
Flavio Santes 8b0467a967 iot/dns: Add '+' operator
This commit adds the '+' operator that keeps symmetry with the line
below.

Change-Id: Icb2a5f22b5202597e3e0cc252436b422ce7b44a2
Signed-off-by: Flavio Santes <flavio.santes@intel.com>
2016-12-02 12:40:51 +02:00
Vinicius Costa Gomes ea28e4fccb iot/zoap: Add helper for generating tokens
Most applications will want to use randomly generated tokens, add a
helper for that.

Change-Id: If2a6b1d96596024afd2d2ce8e3632900adfe9c0f
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
2016-12-02 12:40:50 +02:00
Vinicius Costa Gomes dc45748d50 iot/zoap: Port to the native stack
This ports zoap to the native stack.

Just for reference, and totally not scientific, here are the numbers
using the old stack:

$ size outdir/qemu_x86/zephyr.elf
   text	   data	    bss	    dec	    hex	filename
  34657	  10316	  16916	  61889	   f1c1	outdir/qemu_x86/zephyr.elf

With yaip:

$ size outdir/qemu_x86/zephyr.elf
   text	   data	    bss	    dec	    hex	filename
  30575	   9148	   6164	  45887	   b33f	outdir/qemu_x86/zephyr.elf

Jira: ZEP-818

Change-Id: I7992a3e2af7d419081ee5a64d7cc2d49fb628ead
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
2016-12-02 12:40:50 +02:00
Vinicius Costa Gomes f996299754 iot/zoap: Add support for error 4.15
The "Unsupported Content-Format" error was missing from the list of
supported errors.

Change-Id: I208d79f8949838187b877eaa0a53597d8a5bc6cb
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
2016-12-02 12:40:50 +02:00
Vinicius Costa Gomes fa5481b1cb zoap: Fix alignment of multiline function arguments
Change-Id: I0a96c87db84671be1790fda34083e7cd53e00cd0
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
2016-12-02 12:40:50 +02:00
Flavio Santes 36bbd7a935 iot/dns: Add DNS Client support for Zephyr
This commit adds support the DNS client API on top of the new
native IP stack. Some features of this implementation are:

- Support for IPv4 and IPv6
- Support for multiple concurrent queries. A net_buf structure is
  required per context. See the DNS_RESOLVER_ADDITIONAL_BUF_CTR
  configuration variable

Origin: Original

Jira: ZEP-793
Jira: ZEP-855
Jira: ZEP-975

Change-Id: I351a636462a1b78a412c9bce1ef3cd0fa6223a52
Signed-off-by: Flavio Santes <flavio.santes@intel.com>
2016-12-02 12:40:49 +02:00
Inaky Perez-Gonzalez b53e6d7774 libc/minimal: snprintf(): KILL negative len parameter
snprintf() implements the ability to foce a negative value through the
(unsigned) size_t len parameter to allow the formatter to use a
maximum size string.

This is point less, we don't have as much memory and this is a recipe
for all kinds of vulnerabilities.

Kill the whole thing, the testcase it represents and thank Coverity
for finding this thing. Whatever use it had before, it has no more.

Change-Id: If422246548664699d8aa328a1b9304ef13cab7ea
Coverity-ID: 131625
Coverity-ID: 131626
Signed-off-by: Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
2016-11-28 20:49:37 +00:00
Inaky Perez-Gonzalez 11a52750d3 libc: remove useless code in _prf()
Coverity reported a block of deadcode in _prf() that seems to be a
leftover carcass from a previous time. Replaced with a comment in case
someone decides it was needed back.

Change-Id: Id97e84f3279f807e6188371f27f6af157e6d5038
Coverity-ID: 131631
Signed-off-by: Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
2016-11-23 00:57:48 +00:00
Vinicius Costa Gomes 777d57dbfb iot/zoap: Fix decoding of 16-bit delta
When an option code or length representation is encoded in a 16-bit
value, the access was wrong.

Coverity-CID: 151963

Change-Id: Ie7741998cbde348ccf490a6686e68a1ace99920e
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
2016-11-18 23:13:08 +00:00
Inaky Perez-Gonzalez c41d88fd11 libc: atoi() avoid fallthroughs in switch cases
This is a tentative fix for CID 93807, a valid Coverity warning;
however the code is valid too.

We can choose to silence the warning or rewrite the code in a way that
makes it more verbose but keeps Coverity happy.

Coverity complains about doing an implicit fallthrough in switch case
statement. I prefer patching the code to make it explicit, as the
compiler will optimize out, to avoid having to constantly filter out
the checker's warnings.

Coverity-CID: 93807
Change-Id: I7be334d48567bf52fc2b21de043310e0f73b72db
Signed-off-by: Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
2016-11-16 22:05:53 +00:00
Juro Bystricky f3bf5abd52 newlib: add support for nano-formatted-io
If newlib is configured with --enable-newlib-nano-formatted-io,
floating-point support is split out of the formatted I/O code into
weak functions which are not linked by default. This leads to a smaller
code by about 16~20k when using newlib "printf" and/or "sscanf" but not
using floating point I/O.

Programs that need floating-point I/O support must explicitly request
linking of one or both of the floating-point functions:

    _printf_float or _scanf_float.

This can be done at link time using the -u option which can be passed
to either gcc or ld.

Implemented via new configuration options:
    CONFIG_NEWLIB_LIBC_FLOAT_PRINTF
    CONFIG_NEWLIB_LIBC_FLOAT_SCANF

Change-Id: I57f9d9f02e6d21d6011d14de7153b1d3ba6f6e32
Signed-off-by: Juro Bystricky <juro.bystricky@intel.com>
2016-11-09 02:47:43 +00:00
Jaakko Hannikainen 24a2fb19f9 lib: Add implementation for strrchr
Signed-off-by: Jaakko Hannikainen <jaakko.hannikainen@intel.com>
Change-Id: I57c549fae0fa8b2321794e9256da63b0a2fe6eaf
2016-11-04 16:53:50 +00:00
Vinicius Costa Gomes b7833b9851 iot/zoap: Add support for block sized transfers
This will add basic support for sending bodies of data that exceed the
size of a single UDP packet.

Block-wise transfers are defined in the recently adopted RFC 7959[1].

The RFC defines four options, two negotiating the block transfer, and
two for informing the size of the transfer. Depending whether the packet
is a request or a response, each option is defined as
"control" (informative) or descriptive (describes what's in the
payload).

Change-Id: Ic71275558c4afed0298d20e8712f76d53904f89f
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
2016-10-25 12:56:51 +00:00
Vinicius Costa Gomes 75d7147fa4 iot/zoap: Fix comparing pointers of different signedness
strncmp() expects pointers of type 'char *', we could cast option.value
to 'char *', but we can use memcmp() instead, which has the benefit of
being simpler.

Change-Id: I8c4ee4401712f3617c134d8e5b6d84e8f5cc4e1d
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
2016-10-04 12:29:07 +00:00
Anas Nashif c83e6a1f48 libc: define EWOULDBLOCK to be the same as EAGAIN
EWOULDBLOCK is an old error code from BSD. Not much uses it, and on basically
all modern systems it's defined to the same value as EAGAIN, which is the
System V value for the same condition.

Jira: ZEP-982
Change-Id: I5435ce55fa47f5bd2fac5d881b5b195b025f48a2
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2016-10-03 02:29:42 +00:00
Vinicius Costa Gomes 7079a18267 iot/zoap: Add helpers for dealing with integer options
A good number of option values represent numbers, so add these helpers
so applications can avoid repeating this.

Change-Id: Ied2a844c51808dcafe751a77492d00f2063de7d6
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
2016-10-01 01:11:25 +00:00
Vinicius Costa Gomes 441d22a371 iot/zoap: Add port information to network addresses
uIP keeps the port separated from the IP addresses, so if the
application wants to communicate with a remote endpoint we must also
have the port information available.

Change-Id: I8e2b01fe5717166e1f9cebcc74b2056325b8ccc3
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
2016-10-01 01:11:25 +00:00
Vinicius Costa Gomes 92a79f7351 iot/zoap: Add support for observing resources
This adds support for observing resources, for client and server side.

For the server side we augment the resource struct so it can hold
information about each interested observer.

For client side, observing a resource abstracted as an reply that
can be called multiple times.

Change-Id: If3f0b41e302cff357ab891e6e91ec2d41579fb92
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
2016-10-01 01:11:24 +00:00
Vinicius Costa Gomes 7d0a1279b6 iot/zoap: Fix retrieving the token for every reply
As there is only one response token, we can do this only once at the
beginning of the function, instead of every iteration.

Change-Id: Ibb324a1189929227bd1eb9837c5d330ff8c8dac2
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
2016-09-22 00:54:36 +00:00
Vinicius Costa Gomes eab5adb282 iot/zoap: Fix subtly wrong indentation
There were a few lines where the alignment was wrong.

Change-Id: I474976c218ac28564dfe9dcda0e0687ed110834e
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
2016-09-22 00:54:35 +00:00
Qiu Peiyang c53fe299c0 libc: replace null.h and size_t.h with stddef.h
According to commit b71a8a4591 and Jira: ZEP-733
(libc: remove stddef.h which is provided by the compiler),
the stddef.h in zephyr code is removed and it's provided
by the compiler. The original stddef.h includes two head
files, null.h and size_t.h, which are also useless now.
So remove these two deprecated files, in case conflicting
definition.

Change-Id: Ie7163fdbd23c32759425b50f3deff2a57cc051a9
Signed-off-by: Qiu Peiyang <peiyangx.qiu@intel.com>
2016-09-13 10:21:10 +08:00