This one will quickly describe how the L2 concept fits into the network
stack, what is its role and how device drivers are then made.
Jira: ZEP-824
Change-Id: Ib5d49a5194fe4f67ad1196266ad09f40d732d5ee
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This commit changes the net_buf getter functions in nbuf.h
by adding a timeout parameter. These function prototypes
are changed to accept a timeout parameter.
net_nbuf_get_rx()
net_nbuf_get_tx()
net_nbuf_get_data()
net_nbuf_get_reserve_rx()
net_nbuf_get_reserve_tx()
net_nbuf_get_reserve_data()
net_nbuf_copy()
net_nbuf_copy_all()
net_nbuf_push()
net_nbuf_append()
net_nbuf_write()
net_nbuf_insert()
Following convinience functions have not been changed
net_nbuf_append_u8
net_nbuf_append_be16
net_nbuf_append_be32
net_nbuf_insert_u8
net_nbuf_insert_be16
net_nbuf_insert_be32
net_nbuf_write_u8
net_nbuf_write_be16
net_nbuf_write_be32
so they call the base function using K_FOREVER. Use the
base function if you want to have a timeout when net_buf
is allocated.
Change-Id: I20bb602ffb73069e5a02668fce60575141586c0f
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Copy the documentation from the Wiki over here, the cross linking
between online documentation and Wiki and duplication of information was
inconsistent and confusing. Put everything in one place.
Change-Id: Ia3aaec1b431477e2ec54dbec2ccaa655870b0ee3
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
This document describes the changes in Zephyr 1.7 networking
stack compared to Zephyr 1.6. This document is a high level
description of the changes between these two major Zephyr releases.
For individual changes, the application developer can find more
details in the network header file documentation in include/net/*.
Change-Id: I281d670bee0c08e07c28fc423157ddb3f2bec8f1
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Current version of IP stack supports both IPv4 and IPv6 at the same time.
Use 'threads' instead of 'fibers' in documentation.
Jira: ZEP-1623
Change-Id: Ib8210f32775ac55fe2c346cd81ed263ffe472b28
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
The headings on some .rst files were not following the expected
heading order of using # for h1, * for h2, = for h3, and - for h4
This patch fixes that, and the doc/templates/*.tmpl files created
for folks to use as templates for creating board and sample docs.
Change-Id: I0263b005648558d5ea41a681ceaa4798c9594dd9
Signed-off-by: David B. Kinder <david.b.kinder@intel.com>
Using a LIFO instead of a FIFO has the potential benefit that more
recently in-use buffers may be "cache-hot" and therefore accessed
faster than least recently used (which is what we get with a FIFO).
Change-Id: I59bb083ca2e00d0d404406540f7db216742a27cf
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
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>
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>
Fix compilation issues that show up if SYS_LOG is mapped to printk
instead of printf. Unlike printf, printk is annotated so that the
compiler catches incorrect format specifiers passed to it.
Change-Id: Iab7cc6da110e9c98720211a6f773dcf055a3a411
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
As the Contiki uIP stack is no more there remove any reference
to it. The path to IP stack is also set correctly.
Change-Id: Ia2e10514f173cf8083d6dd258111a901987bd038
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This doc goes through how to request something, or listen to a network
event. As well as it describes how to create a request handler and how
to throw a network event.
Change-Id: I07cc6d22a14e7f1a0f239f97982c984fd13379d6
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This change is related to patch called
"net: Adapt to new behavior of net_buf_frag_add"
This version removes extra net_nbuf_unref() from
the code. The unref was done because net_buf_frag_del()
did not remove the double ref from the list element.
Because of the other patch, the list does not have
double ref any more, so we need to remove the extra
unref in couple of extra places.
Change-Id: If90e01c24b9b4e68afbfa283850d2a1ecb3065ed
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Explain how to use net_context connectivity API.
Change-Id: Ifa57af3e05ca424dfbd30a17608a1dd59646caf9
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This document describes the network stack architecture of the
new IP stack.
Change-Id: I19f7c77c66115e6453bcde0d41bb7cada3efc5e1
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Now that Bluetooth is its own subsystem Networking shouldn't reference
it as a sub-section anymore.
Change-Id: Id134f9b9e63cfc6533e35e91c7bc6aedd6e8fdf8
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This helps avoid having the tree grow too deep.
Change-Id: Ic4055f30b6d6f2ab575b361062d7f44b84237ba5
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Integrate the notes into the actual steps, notes are usually understood
as optional and disturb the actual flow.
Change-Id: If3168581ca130bd506bc44c353acc082dfa003fd
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Add sensors and networking into the new section and seperate
those from the kernel documentation.
Change-Id: I585845c3ba09173ced7caa0b7fbc1f1a81a26f96
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
