smp.h File Reference

#include <kernel.h>

Go to the source code of this file.

Data Structures
struct	zephyr_smp_transport
	Provides Zephyr-specific functionality for sending SMP responses. More...

Typedefs
typedef int	zephyr_smp_transport_out_fn(struct zephyr_smp_transport *zst, struct net_buf *nb)
	SMP transmit function for Zephyr. More...
typedef uint16_t	zephyr_smp_transport_get_mtu_fn(const struct net_buf *nb)
	SMP MTU query function for Zephyr. More...
typedef int	zephyr_smp_transport_ud_copy_fn(struct net_buf *dst, const struct net_buf *src)
	SMP copy buffer user_data function for Zephyr. More...
typedef void	zephyr_smp_transport_ud_free_fn(void *ud)
	SMP free buffer user_data function for Zephyr. More...

Functions
void	zephyr_smp_transport_init (struct zephyr_smp_transport *zst, zephyr_smp_transport_out_fn *output_func, zephyr_smp_transport_get_mtu_fn *get_mtu_func, zephyr_smp_transport_ud_copy_fn *ud_copy_func, zephyr_smp_transport_ud_free_fn *ud_free_func)
	Initializes a Zephyr SMP transport object. More...
void	zephyr_smp_rx_req (struct zephyr_smp_transport *zst, struct net_buf *nb)
	Enqueues an incoming SMP request packet for processing. More...

Typedef Documentation

zephyr_smp_transport_get_mtu_fn

zephyr_smp_transport_get_mtu_fn

SMP MTU query function for Zephyr.

The supplied net_buf should contain a request received from the peer whose MTU is being queried. This function takes a net_buf parameter because some transports store connection-specific information in the net_buf user header (e.g., the BLE transport stores the peer address).

Parameters

nb	Contains a request from the relevant peer.

Returns

The transport's MTU; 0 if transmission is currently not possible.

zephyr_smp_transport_out_fn

zephyr_smp_transport_out_fn

SMP transmit function for Zephyr.

The supplied net_buf is always consumed, regardless of return code.

Parameters

zst	The transport to send via.
nb	The net_buf to transmit.

Returns

0 on success, MGMT_ERR_[...] code on failure.

zephyr_smp_transport_ud_copy_fn

zephyr_smp_transport_ud_copy_fn

SMP copy buffer user_data function for Zephyr.

The supplied src net_buf should contain a user_data that cannot be copied using regular memcpy function (e.g., the BLE transport net_buf user_data stores the connection reference that has to be incremented when is going to be used by another buffer).

Parameters

dst	Source buffer user_data pointer.
src	Destination buffer user_data pointer.

Returns

0 on success, MGMT_ERR_[...] code on failure.

zephyr_smp_transport_ud_free_fn

zephyr_smp_transport_ud_free_fn

SMP free buffer user_data function for Zephyr.

This function frees net_buf user data, because some transports store connection-specific information in the net_buf user data (e.g., the BLE transport stores the connection reference that has to be decreased).

Parameters

ud	Contains a user_data pointer to be freed.

Function Documentation

zephyr_smp_rx_req()

void zephyr_smp_rx_req	(	struct zephyr_smp_transport *	zst,
		struct net_buf *	nb
	)

Enqueues an incoming SMP request packet for processing.

This function always consumes the supplied net_buf.

Parameters

zst	The transport to use to send the corresponding response(s).
nb	The request packet to process.

zephyr_smp_transport_init()

void zephyr_smp_transport_init	(	struct zephyr_smp_transport *	zst,
		zephyr_smp_transport_out_fn *	output_func,
		zephyr_smp_transport_get_mtu_fn *	get_mtu_func,
		zephyr_smp_transport_ud_copy_fn *	ud_copy_func,
		zephyr_smp_transport_ud_free_fn *	ud_free_func
	)

Initializes a Zephyr SMP transport object.

Parameters

zst	The transport to construct.
output_func	The transport's send function.
get_mtu_func	The transport's get-MTU function.
ud_copy_func	The transport buffer user_data copy function.
ud_free_func	The transport buffer user_data free function.