Network packet capture

Network packet capture support functions. More...

Functions
int	net_capture_setup (const char *remote_addr, const char *my_local_addr, const char *peer_addr, const struct device **dev)
	Setup network packet capturing support.
static int	net_capture_cleanup (const struct device *dev)
	Cleanup network packet capturing support.
static int	net_capture_enable (const struct device *dev, struct net_if *iface)
	Enable network packet capturing support.
static bool	net_capture_is_enabled (const struct device *dev)
	Is network packet capture enabled or disabled.
static int	net_capture_disable (const struct device *dev)
	Disable network packet capturing support.

Detailed Description

Network packet capture support functions.

Function Documentation

net_capture_cleanup()

static int net_capture_cleanup ( const struct device *  dev )

inlinestatic

#include <include/zephyr/net/capture.h>

Cleanup network packet capturing support.

This should be called after the capturing is done and resources can be released.

Parameters

dev	Network capture device. User must allocate using the net_capture_setup() function.

Returns

0 if ok, <0 if network packet capture cleanup failed

net_capture_disable()

static int net_capture_disable ( const struct device *  dev )

inlinestatic

#include <include/zephyr/net/capture.h>

Disable network packet capturing support.

Parameters

dev	Network capture device

Returns

0 if ok, <0 if network packet capture disable failed

net_capture_enable()

static int net_capture_enable ( const struct device *  dev, struct net_if *  iface  )

inlinestatic

#include <include/zephyr/net/capture.h>

Enable network packet capturing support.

This creates tunnel network interface where all the captured packets are pushed. The captured network packets are placed in UDP packets that are sent to tunnel peer.

Parameters

dev	Network capture device
iface	Network interface we are starting to capture packets.

Returns

0 if ok, <0 if network packet capture enable failed

net_capture_is_enabled()

static bool net_capture_is_enabled ( const struct device *  dev )

inlinestatic

#include <include/zephyr/net/capture.h>

Is network packet capture enabled or disabled.

Parameters

dev	Network capture device. If set to NULL, then the default capture device is used.

Returns

True if enabled, False if network capture is disabled.

net_capture_setup()

int net_capture_setup	(	const char *	remote_addr,
		const char *	my_local_addr,
		const char *	peer_addr,
		const struct device **	dev
	)

#include <include/zephyr/net/capture.h>

Setup network packet capturing support.

Parameters

remote_addr	The value tells the tunnel remote/outer endpoint IP address. The IP address can be either IPv4 or IPv6 address. This address is used to select the network interface where the tunnel is created.
my_local_addr	The local/inner IP address of the tunnel. Can contain also port number which is used as UDP source port.
peer_addr	The peer/inner IP address of the tunnel. Can contain also port number which is used as UDP destination port.
dev	Network capture device. This is returned to the caller.

Returns

0 if ok, <0 if network packet capture setup failed