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docs: networking: convert 6lowpan.txt to ReST 

- add SPDX header;
- use document title markup;
- mark code blocks and literals as such;
- adjust identation, whitespaces and blank lines;
- add to networking/index.rst.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Reviewed-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Mauro Carvalho Chehab 2020-02-06 16:17:22 +01:00 committed by Marcel Holtmann
parent 8788a1ee07
commit 107db7ec78
2 changed files with 17 additions and 13 deletions
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29
Documentation/networking/6lowpan.txt → Documentation/networking/6lowpan.rst
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@ -1,37 +1,40 @@
.. SPDX-License-Identifier: GPL-2.0
Netdev private dataroom for 6lowpan interfaces:
==============================================
Netdev private dataroom for 6lowpan interfaces
==============================================
All 6lowpan able net devices, means all interfaces with ARPHRD_6LOWPAN,
must have "struct lowpan_priv" placed at beginning of netdev_priv.
The priv_size of each interface should be calculate by:
The priv_size of each interface should be calculate by::
dev->priv_size = LOWPAN_PRIV_SIZE(LL_6LOWPAN_PRIV_DATA);
Where LL_PRIV_6LOWPAN_DATA is sizeof linklayer 6lowpan private data struct.
To access the LL_PRIV_6LOWPAN_DATA structure you can cast:
To access the LL_PRIV_6LOWPAN_DATA structure you can cast::
lowpan_priv(dev)-priv;
to your LL_6LOWPAN_PRIV_DATA structure.
Before registering the lowpan netdev interface you must run:
Before registering the lowpan netdev interface you must run::
lowpan_netdev_setup(dev, LOWPAN_LLTYPE_FOOBAR);
wheres LOWPAN_LLTYPE_FOOBAR is a define for your 6LoWPAN linklayer type of
enum lowpan_lltypes.
Example to evaluate the private usually you can do:
Example to evaluate the private usually you can do::
static inline struct lowpan_priv_foobar *
lowpan_foobar_priv(struct net_device *dev)
{
static inline struct lowpan_priv_foobar *
lowpan_foobar_priv(struct net_device *dev)
{
return (struct lowpan_priv_foobar *)lowpan_priv(dev)->priv;
}
}
switch (dev->type) {
case ARPHRD_6LOWPAN:
switch (dev->type) {
case ARPHRD_6LOWPAN:
lowpan_priv = lowpan_priv(dev);
/* do great stuff which is ARPHRD_6LOWPAN related */
switch (lowpan_priv->lltype) {
@ -42,8 +45,8 @@ case ARPHRD_6LOWPAN:
...
}
break;
...
}
...
}
In case of generic 6lowpan branch ("net/6lowpan") you can remove the check
on ARPHRD_6LOWPAN, because you can be sure that these function are called

1
Documentation/networking/index.rst
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@ -33,6 +33,7 @@ Contents:
tls
tls-offload
nfc
6lowpan
.. only:: subproject and html