blob: d083509b437bc4d73a92947e2277c490ee98a394 [file] [log] [blame]
/*
* Copyright (c) 2023 Nordic Semiconductor ASA
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file
* @brief API for controlling generic network association routines on network devices that
* support it.
*/
#ifndef ZEPHYR_INCLUDE_CONN_MGR_CONNECTIVITY_H_
#define ZEPHYR_INCLUDE_CONN_MGR_CONNECTIVITY_H_
#include <zephyr/device.h>
#include <zephyr/net/net_if.h>
#include <zephyr/sys/iterable_sections.h>
#include <zephyr/net/net_mgmt.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Connection Manager Connectivity API
* @defgroup conn_mgr_connectivity Connection Manager Connectivity API
* @since 3.4
* @version 0.1.0
* @ingroup networking
* @{
*/
/** @cond INTERNAL_HIDDEN */
/* Connectivity Events */
#define _NET_MGMT_CONN_LAYER NET_MGMT_LAYER(NET_MGMT_LAYER_L2)
#define _NET_MGMT_CONN_CODE NET_MGMT_LAYER_CODE(0x207)
#define _NET_MGMT_CONN_BASE (_NET_MGMT_CONN_LAYER | _NET_MGMT_CONN_CODE | \
NET_MGMT_EVENT_BIT)
#define _NET_MGMT_CONN_IF_EVENT (NET_MGMT_IFACE_BIT | _NET_MGMT_CONN_BASE)
/** @endcond */
enum net_event_conn_cmd {
NET_EVENT_CONN_CMD_IF_TIMEOUT = 1,
NET_EVENT_CONN_CMD_IF_FATAL_ERROR,
};
/**
* @brief net_mgmt event raised when a connection attempt times out
*/
#define NET_EVENT_CONN_IF_TIMEOUT \
(_NET_MGMT_CONN_IF_EVENT | NET_EVENT_CONN_CMD_IF_TIMEOUT)
/**
* @brief net_mgmt event raised when a non-recoverable connectivity error occurs on an iface
*/
#define NET_EVENT_CONN_IF_FATAL_ERROR \
(_NET_MGMT_CONN_IF_EVENT | NET_EVENT_CONN_CMD_IF_FATAL_ERROR)
/**
* @brief Per-iface connectivity flags
*/
enum conn_mgr_if_flag {
/**
* Persistent
*
* When set, indicates that the connectivity implementation bound to this iface should
* attempt to persist connectivity by automatically reconnecting after connection loss.
*/
CONN_MGR_IF_PERSISTENT,
/**
* No auto-connect
*
* When set, conn_mgr will not automatically attempt to connect this iface when it reaches
* admin-up.
*/
CONN_MGR_IF_NO_AUTO_CONNECT,
/**
* No auto-down
*
* When set, conn_mgr will not automatically take the iface admin-down when it stops
* trying to connect, even if CONFIG_NET_CONNECTION_MANAGER_AUTO_IF_DOWN is enabled.
*/
CONN_MGR_IF_NO_AUTO_DOWN,
/** @cond INTERNAL_HIDDEN */
/* Total number of flags - must be at the end of the enum */
CONN_MGR_NUM_IF_FLAGS,
/** @endcond */
};
/** Value to use with @ref conn_mgr_if_set_timeout and @ref conn_mgr_conn_binding.timeout to
* indicate no timeout
*/
#define CONN_MGR_IF_NO_TIMEOUT 0
/**
* @brief Connect interface
*
* If the provided iface has been bound to a connectivity implementation, initiate
* network connect/association.
*
* Automatically takes the iface admin-up (by calling @ref net_if_up) if it isn't already.
*
* Non-Blocking.
*
* @param iface Pointer to network interface
* @retval 0 on success.
* @retval -ESHUTDOWN if the iface is not admin-up.
* @retval -ENOTSUP if the iface does not have a connectivity implementation.
* @retval implementation-specific status code otherwise.
*/
int conn_mgr_if_connect(struct net_if *iface);
/**
* @brief Disconnect interface
*
* If the provided iface has been bound to a connectivity implementation, disconnect/dissassociate
* it from the network, and cancel any pending attempts to connect/associate.
*
* Does nothing if the iface is currently admin-down.
*
* @param iface Pointer to network interface
*
* @retval 0 on success.
* @retval -ENOTSUP if the iface does not have a connectivity implementation.
* @retval implementation-specific status code otherwise.
*/
int conn_mgr_if_disconnect(struct net_if *iface);
/**
* @brief Check whether the provided network interface supports connectivity / has been bound
* to a connectivity implementation.
*
* @param iface Pointer to the iface to check.
* @retval true if connectivity is supported (a connectivity implementation has been bound).
* @retval false otherwise.
*/
bool conn_mgr_if_is_bound(struct net_if *iface);
/**
* @brief Set implementation-specific connectivity options.
*
* If the provided iface has been bound to a connectivity implementation that supports it,
* implementation-specific connectivity options related to the iface.
*
* @param iface Pointer to the network interface.
* @param optname Integer value representing the option to set.
* The meaning of values is up to the conn_mgr_conn_api implementation.
* Some settings may affect multiple ifaces.
* @param optval Pointer to the value to be assigned to the option.
* @param optlen Length (in bytes) of the value to be assigned to the option.
* @retval 0 if successful.
* @retval -ENOTSUP if conn_mgr_if_set_opt not implemented by the iface.
* @retval -ENOBUFS if optlen is too long.
* @retval -EINVAL if NULL optval pointer provided.
* @retval -ENOPROTOOPT if the optname is not recognized.
* @retval implementation-specific error code otherwise.
*/
int conn_mgr_if_set_opt(struct net_if *iface, int optname, const void *optval, size_t optlen);
/**
* @brief Get implementation-specific connectivity options.
*
* If the provided iface has been bound to a connectivity implementation that supports it,
* retrieves implementation-specific connectivity options related to the iface.
*
* @param iface Pointer to the network interface.
* @param optname Integer value representing the option to set.
* The meaning of values is up to the conn_mgr_conn_api implementation.
* Some settings may be shared by multiple ifaces.
* @param optval Pointer to where the retrieved value should be stored.
* @param optlen Pointer to length (in bytes) of the destination buffer available for storing the
* retrieved value. If the available space is less than what is needed, -ENOBUFS
* is returned. If the available space is invalid, -EINVAL is returned.
*
* optlen will always be set to the total number of bytes written, regardless of
* whether an error is returned, even if zero bytes were written.
*
* @retval 0 if successful.
* @retval -ENOTSUP if conn_mgr_if_get_opt is not implemented by the iface.
* @retval -ENOBUFS if retrieval buffer is too small.
* @retval -EINVAL if invalid retrieval buffer length is provided, or if NULL optval or
* optlen pointer provided.
* @retval -ENOPROTOOPT if the optname is not recognized.
* @retval implementation-specific error code otherwise.
*/
int conn_mgr_if_get_opt(struct net_if *iface, int optname, void *optval, size_t *optlen);
/**
* @brief Check the value of connectivity flags
*
* If the provided iface is bound to a connectivity implementation, retrieves the value of the
* specified connectivity flag associated with that iface.
*
* @param iface - Pointer to the network interface to check.
* @param flag - The flag to check.
* @return True if the flag is set, otherwise False.
* Also returns False if the provided iface is not bound to a connectivity implementation,
* or the requested flag doesn't exist.
*/
bool conn_mgr_if_get_flag(struct net_if *iface, enum conn_mgr_if_flag flag);
/**
* @brief Set the value of a connectivity flags
*
* If the provided iface is bound to a connectivity implementation, sets the value of the
* specified connectivity flag associated with that iface.
*
* @param iface - Pointer to the network interface to modify.
* @param flag - The flag to set.
* @param value - Whether the flag should be enabled or disabled.
* @retval 0 on success.
* @retval -EINVAL if the flag does not exist.
* @retval -ENOTSUP if the provided iface is not bound to a connectivity implementation.
*/
int conn_mgr_if_set_flag(struct net_if *iface, enum conn_mgr_if_flag flag, bool value);
/**
* @brief Get the connectivity timeout for an iface
*
* If the provided iface is bound to a connectivity implementation, retrieves the timeout setting
* in seconds for it.
*
* @param iface - Pointer to the iface to check.
* @return int - The connectivity timeout value (in seconds) if it could be retrieved, otherwise
* CONN_MGR_IF_NO_TIMEOUT.
*/
int conn_mgr_if_get_timeout(struct net_if *iface);
/**
* @brief Set the connectivity timeout for an iface.
*
* If the provided iface is bound to a connectivity implementation, sets the timeout setting in
* seconds for it.
*
* @param iface - Pointer to the network interface to modify.
* @param timeout - The timeout value to set (in seconds).
* Pass @ref CONN_MGR_IF_NO_TIMEOUT to disable the timeout.
* @retval 0 on success.
* @retval -ENOTSUP if the provided iface is not bound to a connectivity implementation.
*/
int conn_mgr_if_set_timeout(struct net_if *iface, int timeout);
/**
* @}
*/
/**
* @brief Connection Manager Bulk API
* @defgroup conn_mgr_connectivity_bulk Connection Manager Connectivity Bulk API
* @ingroup networking
* @{
*/
/**
* @brief Convenience function that takes all available ifaces into the admin-up state.
*
* Essentially a wrapper for @ref net_if_up.
*
* @param skip_ignored - If true, only affect ifaces that aren't ignored by conn_mgr.
* Otherwise, affect all ifaces.
* @return 0 if all net_if_up calls returned 0, otherwise the first nonzero value
* returned by a net_if_up call.
*/
int conn_mgr_all_if_up(bool skip_ignored);
/**
* @brief Convenience function that takes all available ifaces into the admin-down state.
*
* Essentially a wrapper for @ref net_if_down.
*
* @param skip_ignored - If true, only affect ifaces that aren't ignored by conn_mgr.
* Otherwise, affect all ifaces.
* @return 0 if all net_if_down calls returned 0, otherwise the first nonzero value
* returned by a net_if_down call.
*/
int conn_mgr_all_if_down(bool skip_ignored);
/**
* @brief Convenience function that takes all available ifaces into the admin-up state, and
* connects those that support connectivity.
*
* Essentially a wrapper for @ref net_if_up and @ref conn_mgr_if_connect.
*
* @param skip_ignored - If true, only affect ifaces that aren't ignored by conn_mgr.
* Otherwise, affect all ifaces.
* @return 0 if all net_if_up and conn_mgr_if_connect calls returned 0, otherwise the first nonzero
* value returned by either net_if_up or conn_mgr_if_connect.
*/
int conn_mgr_all_if_connect(bool skip_ignored);
/**
* @brief Convenience function that disconnects all available ifaces that support connectivity
* without putting them into admin-down state (unless auto-down is enabled for the iface).
*
* Essentially a wrapper for @ref net_if_down.
*
* @param skip_ignored - If true, only affect ifaces that aren't ignored by conn_mgr.
* Otherwise, affect all ifaces.
* @return 0 if all net_if_up and conn_mgr_if_connect calls returned 0, otherwise the first nonzero
* value returned by either net_if_up or conn_mgr_if_connect.
*/
int conn_mgr_all_if_disconnect(bool skip_ignored);
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* ZEPHYR_INCLUDE_CONN_MGR_CONNECTIVITY_H_ */