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netdev_tap: make 'wired' property configurable

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`netdev_tap` is a virtual interface, make it possible to simulate both
a wired and a wireless interface.
This commit is contained in:
Benjamin Valentin 2022-02-25 17:20:17 +01:00
parent 039e9937a4
commit f61c12e008
3 changed files with 23 additions and 1 deletions
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6
cpu/native/include/netdev_tap.h
View File

@ -25,6 +25,7 @@ extern "C" {
#endif
#include <stdint.h>
#include <stdbool.h>
#include "net/netdev.h"
#include "net/ethernet/hdr.h"
@ -43,7 +44,8 @@ typedef struct netdev_tap {
char tap_name[IFNAMSIZ]; /**< host dev file name */
int tap_fd; /**< host file descriptor for the TAP */
uint8_t addr[ETHERNET_ADDR_LEN]; /**< The MAC address of the TAP */
uint8_t promiscuous; /**< Flag for promiscuous mode */
bool promiscuous; /**< Flag for promiscuous mode */
bool wired; /**< Flag for wired mode */
} netdev_tap_t;
/**
@ -52,6 +54,8 @@ typedef struct netdev_tap {
typedef struct {
char **tap_name; /**< Name of the host system's tap
interface to bind to. */
bool wired; /**< Interface should behave like a
wired interface. */
} netdev_tap_params_t;
/**

17
cpu/native/netdev_tap/netdev_tap.c
View File

@ -94,6 +94,12 @@ static inline int _set_promiscuous(netdev_t *netdev, int value)
return value;
}
static inline int _get_wired(netdev_t *netdev)
{
netdev_tap_t *dev = container_of(netdev, netdev_tap_t, netdev);
return dev->wired;
}
static inline void _isr(netdev_t *netdev)
{
if (netdev->event_callback) {
@ -124,6 +130,16 @@ static int _get(netdev_t *dev, netopt_t opt, void *value, size_t max_len)
*((bool*)value) = (bool)_get_promiscuous(dev);
res = sizeof(bool);
break;
case NETOPT_IS_WIRED:
if (!_get_wired(dev)) {
res = -ENOTSUP;
} else {
if (value) {
*((bool*)value) = true;
}
res = sizeof(bool);
}
break;
default:
res = netdev_eth_get(dev, opt, value, max_len);
break;
@ -294,6 +310,7 @@ void netdev_tap_setup(netdev_tap_t *dev, const netdev_tap_params_t *params, int
dev->netdev.driver = &netdev_driver_tap;
strncpy(dev->tap_name, *(params->tap_name), IFNAMSIZ - 1);
dev->tap_name[IFNAMSIZ - 1] = '\0';
dev->wired = params->wired;
netdev_register(&dev->netdev, NETDEV_TAP, index);
}

1
cpu/native/startup.c
View File

@ -655,6 +655,7 @@ __attribute__((constructor)) static void startup(int argc, char **argv, char **e
#ifdef MODULE_NETDEV_TAP
for (int i = 0; i < NETDEV_TAP_MAX; i++) {
netdev_tap_params[i].tap_name = &argv[optind + i];
netdev_tap_params[i].wired = true;
}
#endif