Distributed Switch Architecture definitions and helpers

DSA definitions and helpers. More...

Data Structures
struct	dsa_slave_config
	Structure to provide mac address for each LAN interface. More...

Typedefs
typedef enum net_verdict(*	dsa_net_recv_cb_t) (struct net_if *iface, struct net_pkt *pkt)
	DSA (MGMT) Receive packet callback.
typedef int(*	dsa_send_t) (const struct device *dev, struct net_pkt *pkt)
	Pointer to master interface send function.

Functions
int	dsa_tx (const struct device *dev, struct net_pkt *pkt)
	DSA generic transmit function.
int	dsa_register_recv_callback (struct net_if *iface, dsa_net_recv_cb_t cb)
	Register DSA Rx callback functions.
struct net_if *	dsa_net_recv (struct net_if *iface, struct net_pkt **pkt)
	Set DSA interface to packet.
int	dsa_register_master_tx (struct net_if *iface, dsa_send_t fn)
	DSA helper function to register transmit function for master.
bool	dsa_is_port_master (struct net_if *iface)
	DSA helper function to check if port is master.
struct net_if *	dsa_get_slave_port (struct net_if *iface, int slave_num)
	Get network interface of a slave port.
int	dsa_switch_read (struct net_if *iface, uint16_t reg_addr, uint8_t *value)
	Read from DSA switch register.
int	dsa_switch_write (struct net_if *iface, uint16_t reg_addr, uint8_t value)
	Write to DSA switch.
int	dsa_switch_set_mac_table_entry (struct net_if *iface, const uint8_t *mac, uint8_t fw_port, uint16_t tbl_entry_idx, uint16_t flags)
	Write static MAC table entry.
int	dsa_switch_get_mac_table_entry (struct net_if *iface, uint8_t *buf, uint16_t tbl_entry_idx)
	Read static MAC table entry.

Detailed Description

DSA definitions and helpers.

Typedef Documentation

dsa_net_recv_cb_t

typedef enum net_verdict(* dsa_net_recv_cb_t) (struct net_if *iface, struct net_pkt *pkt)

#include <zephyr/net/dsa.h>

DSA (MGMT) Receive packet callback.

Callback gets called upon receiving packet. It is responsible for freeing packet or indicating to the stack that it needs to free packet by returning correct net_verdict.

Returns:

• NET_DROP, if packet was invalid, rejected or we want the stack to free it. In this case the core stack will free the packet.
• NET_OK, if the packet was accepted, in this case the ownership of the net_pkt goes to callback and core network stack will forget it.

dsa_send_t

typedef int(* dsa_send_t) (const struct device *dev, struct net_pkt *pkt)

#include <zephyr/net/dsa.h>

Pointer to master interface send function.

Function Documentation

dsa_get_slave_port()

struct net_if * dsa_get_slave_port	(	struct net_if *	iface,
		int	slave_num
	)

#include <zephyr/net/dsa.h>

Get network interface of a slave port.

Parameters

	iface	Master port
[in]	slave_num	Slave port number

Returns

network interface of the slave if successful

NULL if slave port does not exist

dsa_is_port_master()

bool dsa_is_port_master

(

struct net_if *

iface

)

#include <zephyr/net/dsa.h>

DSA helper function to check if port is master.

Parameters

iface

Network interface (master)

Returns:

• true if ok, false otherwise

dsa_net_recv()

struct net_if * dsa_net_recv	(	struct net_if *	iface,
		struct net_pkt **	pkt
	)

#include <zephyr/net/dsa.h>

Set DSA interface to packet.

Parameters

iface	Network interface (master)
pkt	Network packet

Returns

Return the slave network interface

dsa_register_master_tx()

int dsa_register_master_tx	(	struct net_if *	iface,
		dsa_send_t	fn
	)

#include <zephyr/net/dsa.h>

DSA helper function to register transmit function for master.

Parameters

iface	Network interface (master)
fn	Pointer to master interface send method

Returns:

• 0 if ok, < 0 if error

dsa_register_recv_callback()

int dsa_register_recv_callback	(	struct net_if *	iface,
		dsa_net_recv_cb_t	cb
	)

#include <zephyr/net/dsa.h>

Register DSA Rx callback functions.

Parameters

iface	Network interface
cb	Receive callback function

Returns

0 if ok, < 0 if error

dsa_switch_get_mac_table_entry()

int dsa_switch_get_mac_table_entry	(	struct net_if *	iface,
		uint8_t *	buf,
		uint16_t	tbl_entry_idx
	)

#include <zephyr/net/dsa.h>

Read static MAC table entry.

Parameters

	iface	Master DSA interface
	buf	Buffer to receive MAC address
[in]	tbl_entry_idx	Table entry index

Returns

0 if successful, negative if error

dsa_switch_read()

int dsa_switch_read	(	struct net_if *	iface,
		uint16_t	reg_addr,
		uint8_t *	value
	)

#include <zephyr/net/dsa.h>

Read from DSA switch register.

Parameters

	iface	The interface
[in]	reg_addr	The register address
	value	The value

Returns

0 if successful, negative if error

dsa_switch_set_mac_table_entry()

int dsa_switch_set_mac_table_entry	(	struct net_if *	iface,
		const uint8_t *	mac,
		uint8_t	fw_port,
		uint16_t	tbl_entry_idx,
		uint16_t	flags
	)

#include <zephyr/net/dsa.h>

Write static MAC table entry.

Parameters

	iface	Master DSA interface
[in]	mac	MAC address
[in]	fw_port	The firmware port
[in]	tbl_entry_idx	Table entry index
[in]	flags	Flags

Returns

0 if successful, negative if error

dsa_switch_write()

int dsa_switch_write	(	struct net_if *	iface,
		uint16_t	reg_addr,
		uint8_t	value
	)

#include <zephyr/net/dsa.h>

Write to DSA switch.

Parameters

	iface	The interface
[in]	reg_addr	The register address
[in]	value	The value

Returns

{ description_of_the_return_value }

dsa_tx()

int dsa_tx	(	const struct device *	dev,
		struct net_pkt *	pkt
	)

#include <zephyr/net/dsa.h>

DSA generic transmit function.

This is a generic function for passing packets from slave DSA interface to master.

Parameters

dev	Device
pkt	Network packet

Returns:

• 0 if ok (packet sent via master iface), < 0 if error