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net: lwm2m: Add API function to delete object instance

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Since the API already has a function to create an LwM2M object instance,
it makes sense to add a corresponding delete funtion, allowing the
application to delete created objects.

Additionally, for the remote delete set the Registration Update trigger
only when not in bootstrap mode.

Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
This commit is contained in:
Robert Lubos 2021-04-15 12:43:40 +02:00 • committed by Anas Nashif
commit 0d1577f7fe
3 changed files with 50 additions and 2 deletions
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39
subsys/net/lib/lwm2m/lwm2m_engine.c
View file

@ -1456,6 +1456,37 @@ int lwm2m_engine_create_obj_inst(char *pathstr)
return 0;
}
int lwm2m_engine_delete_obj_inst(char *pathstr)
{
struct lwm2m_obj_path path;
int ret = 0;
LOG_DBG("path: %s", log_strdup(pathstr));
/* translate path -> path_obj */
ret = string_to_path(pathstr, &path, '/');
if (ret < 0) {
return ret;
}
if (path.level != 2U) {
LOG_ERR("path must have 2 parts");
return -EINVAL;
}
ret = lwm2m_delete_obj_inst(path.obj_id, path.obj_inst_id);
if (ret < 0) {
return ret;
}
#if defined(CONFIG_LWM2M_RD_CLIENT_SUPPORT)
engine_trigger_update(true);
#endif
return 0;
}
int lwm2m_engine_set_res_data(char *pathstr, void *data_ptr, uint16_t data_len,
uint8_t data_flags)
{
@ -3116,13 +3147,17 @@ static int lwm2m_delete_handler(struct lwm2m_message *msg)
}
ret = lwm2m_delete_obj_inst(msg->path.obj_id, msg->path.obj_inst_id);
if (ret < 0) {
return ret;
}
#if defined(CONFIG_LWM2M_RD_CLIENT_SUPPORT)
if (!ret) {
if (!msg->ctx->bootstrap_mode) {
engine_trigger_update(true);
}
#endif
return ret;
return 0;
}
static int do_read_op(struct lwm2m_message *msg, uint16_t content_format)