Hi Ivo,
Le 13.09.2012 14:33, Ivo Kunadt a écrit :
> At the moment i send some bytes in the xmit function of the
> net_device_ops.
What do you mean by that ? You cannot just send "some" bytes. Your
driver must forward the data that comes from the higher layer (the soft
mac) to your radio chip over SPI.
> Now i want to use the ieee802154_mlme_ops func e.g. to
> send a request. But how can i do that?
mlme_ops contains the MAC management interface access points e.g. to
start scanning the channels, to associate/disaccociate with a network, etc.
These functions will be called through a netlink socket by a user space
application. (in our case the tool called 'iz').
For example when you do an assoc request using the following command :
iz assoc [insert system dependant parameters here]
The following functions are called in the kernel (abstract)
0) | ieee802154_associate_req() {
0) + 14.805 us | ieee802154_nl_get_dev.clone.9();
0) | mac802154_mlme_assoc_req() {
0) + 14.415 us | mac802154_dev_set_pan_id();
0) 5.925 us | mac802154_dev_set_page_channel();
0) 3.540 us | mac802154_dev_set_ieee_addr();
0) | mac802154_send_cmd() {
0) 6.330 us | mac802154_dev_get_dsn();
0) 7.080 us | mac802154_header_create();
0) | mac802154_wpan_xmit() {
0) | mac802154_tx() {
And only then your driver xmit() function will be called. (and your
driver must pass the sk_buff data over SPI to your radio chip)
You can generate "simple" data frame using the izchat program as show on
the getting started page you were shown before.
I hope that helped,
Best regards,
--
Christophe Aeschlimann
Embedded Software Engineer & IT Manager
ACN Advanced Communications Networks S.A.
2000 - Neuchâtel, Switzerland
Tel. +41 32 724 74 31
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