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lorawan: allow setting of DevNonce for OTAA re-join

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Starting with LoRaWAN 1.0.4 the DevNonce sent with the OTAA join must be
monotonically increasing for each new join with the same EUI. The DevNonce
should be stored in non-volatile memory by the application.

This commit uses a simple extension of the lorawan_join_otaa struct to
allow specifying the DevNonce.

Signed-off-by: Martin Jäger <martin@libre.solar>
This commit is contained in:
Martin Jäger 2022-02-26 13:52:18 +01:00 committed by Anas Nashif
parent f613b546e0
commit 9cc32af99e
2 changed files with 19 additions and 0 deletions
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11
include/lorawan/lorawan.h
View File

@ -78,9 +78,20 @@ enum lorawan_message_type {
* case the values stored in the secure element will be used instead.
*/
struct lorawan_join_otaa {
/** Join EUI */
uint8_t *join_eui;
/** Network Key */
uint8_t *nwk_key;
/** Application Key */
uint8_t *app_key;
/**
* Device Nonce
*
* Starting with LoRaWAN 1.0.4 the DevNonce must be monotonically
* increasing for each OTAA join with the same EUI. The DevNonce
* should be stored in non-volatile memory by the application.
*/
uint32_t dev_nonce;
};
struct lorawan_join_abp {

8
subsys/lorawan/lorawan.c
View File

@ -212,6 +212,14 @@ static LoRaMacStatus_t lorawan_join_otaa(
mlme_req.Req.Join.Datarate = default_datarate;
mlme_req.Req.Join.NetworkActivation = ACTIVATION_TYPE_OTAA;
/* Retrieve the NVM context to store device nonce */
mib_req.Type = MIB_NVM_CTXS;
if (LoRaMacMibGetRequestConfirm(&mib_req) != LORAMAC_STATUS_OK) {
LOG_ERR("Could not get NVM context");
return -EINVAL;
}
mib_req.Param.Contexts->Crypto.DevNonce = join_cfg->otaa.dev_nonce;
mib_req.Type = MIB_DEV_EUI;
mib_req.Param.DevEui = join_cfg->dev_eui;
LoRaMacMibSetRequestConfirm(&mib_req);