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openthread: map Thread network interface state

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The current mapping gets the network interface into dormant state when
Thread is not attached. While the node is not capable of doing multi-hop
communication when it's not attached, it should be able to do link-local
communication. This commit changes the mapping to look at OpenThread's
own network interface state instead without further checking Thread's
device role, so that link-local communication is supported when a node
in detached state.

Signed-off-by: Yakun Xu <xyk@google.com>
This commit is contained in:
Yakun Xu 2025-03-11 15:07:52 +08:00 • committed by Benjamin Cabé
commit eddb1af9aa
2 changed files with 22 additions and 3 deletions
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10
subsys/net/l2/openthread/Kconfig
View file

@ -353,4 +353,14 @@ config OPENTHREAD_PLATFORM_KEYS_EXPORTABLE_ENABLE
help
Enable the creation of exportable MAC keys in the OpenThread Key Manager.
config OPENTHREAD_INTERFACE_EARLY_UP
bool "Make OpenThread interface ready as soon as Thread is enabled"
help
When enabled, OpenThread interface will be marked ready (operational
UP) as soon as Thread has been enabled. This means the interface will
be ready to transmit application packets during the Mesh Link
Establishment phase.
Otherwise, OpenThread interface will be marked operational UP only
after the device joins a Thread network.
endif # NET_L2_OPENTHREAD_IMPLEMENTATION_ZEPHYR

15
subsys/net/l2/openthread/openthread.c
View file

@ -187,12 +187,20 @@ static void ot_state_changed_handler(uint32_t flags, void *context)
{
struct openthread_state_changed_cb *entry, *next;
struct openthread_context *ot_context = context;
bool is_up = otIp6IsEnabled(ot_context->instance);
NET_INFO("State changed! Flags: 0x%08" PRIx32 " Current role: %s",
NET_INFO("State changed! Flags: 0x%08" PRIx32 " Current role: %s Ip6: %s",
flags,
otThreadDeviceRoleToString(otThreadGetDeviceRole(ot_context->instance))
);
otThreadDeviceRoleToString(otThreadGetDeviceRole(ot_context->instance)),
(is_up ? "up" : "down"));
#if defined(CONFIG_OPENTHREAD_INTERFACE_EARLY_UP)
if (is_up) {
net_if_dormant_off(ot_context->iface);
} else {
net_if_dormant_on(ot_context->iface);
}
#else
if (flags & OT_CHANGED_THREAD_ROLE) {
switch (otThreadGetDeviceRole(ot_context->instance)) {
case OT_DEVICE_ROLE_CHILD:
@ -208,6 +216,7 @@ static void ot_state_changed_handler(uint32_t flags, void *context)
break;
}
}
#endif
if (flags & OT_CHANGED_IP6_ADDRESS_REMOVED) {
NET_DBG("Ipv6 address removed");