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net: if: Add operational state change time information

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Make sure network interface contains information when the operational
state was changed. After boot, the value is set to 0.

Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
This commit is contained in:
Jukka Rissanen 2025-06-17 17:05:07 +03:00 • committed by Benjamin Cabé
commit 262e777f3a
1 changed files with 45 additions and 0 deletions
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45
include/zephyr/net/net_if.h
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@ -703,6 +703,17 @@ struct net_if_dev {
/** RFC 2863 operational status */ /** RFC 2863 operational status */
enum net_if_oper_state oper_state; enum net_if_oper_state oper_state;
/** Last time the operational state was changed.
* This is used to determine how long the interface has been in the
* current operational state.
*
* This value is set to 0 when the interface is created, and then
* updated whenever the operational state changes.
*
* The value is in milliseconds since boot.
*/
int64_t oper_state_change_time;
}; };
/** /**
@ -906,6 +917,12 @@ static inline enum net_if_oper_state net_if_oper_state_set(
iface->if_dev->oper_state = oper_state; iface->if_dev->oper_state = oper_state;
} }
net_if_lock(iface);
iface->if_dev->oper_state_change_time = k_uptime_get();
net_if_unlock(iface);
return iface->if_dev->oper_state; return iface->if_dev->oper_state;
} }
@ -925,6 +942,34 @@ static inline enum net_if_oper_state net_if_oper_state(struct net_if *iface)
return iface->if_dev->oper_state; return iface->if_dev->oper_state;
} }
/**
* @brief Get an operational state change time of an interface
*
* @param iface Pointer to network interface
* @param change_time Pointer to store the change time. Time the operational
* state of an interface was last changed, in milliseconds since boot.
* If the interface operational state has not been changed yet,
* then the value is 0.
*
* @return 0 if ok, -EINVAL if operational state change time could not be
* retrieved (for example if iface or change_time is NULL).
*/
static inline int net_if_oper_state_change_time(struct net_if *iface,
int64_t *change_time)
{
if (iface == NULL || iface->if_dev == NULL || change_time == NULL) {
return -EINVAL;
}
net_if_lock(iface);
*change_time = iface->if_dev->oper_state_change_time;
net_if_unlock(iface);
return 0;
}
/** /**
* @brief Try sending a packet through a net iface * @brief Try sending a packet through a net iface
* *