159 lines
2.6 KiB
C
159 lines
2.6 KiB
C
/*
|
|
* Ethernet over USB device
|
|
*
|
|
* Copyright (c) 2017 Intel Corporation
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#define LOG_LEVEL CONFIG_USB_DEVICE_NETWORK_LOG_LEVEL
|
|
#include <logging/log.h>
|
|
LOG_MODULE_REGISTER(usb_net);
|
|
|
|
#include <init.h>
|
|
|
|
#include <net/ethernet.h>
|
|
#include <net_private.h>
|
|
|
|
#include <usb_device.h>
|
|
#include <usb_common.h>
|
|
#include <usb_descriptor.h>
|
|
|
|
#include "netusb.h"
|
|
|
|
static struct __netusb {
|
|
struct net_if *iface;
|
|
const struct netusb_function *func;
|
|
} netusb;
|
|
|
|
static int netusb_send(struct device *dev, struct net_pkt *pkt)
|
|
{
|
|
int ret;
|
|
|
|
ARG_UNUSED(dev);
|
|
|
|
LOG_DBG("Send pkt, len %u", net_pkt_get_len(pkt));
|
|
|
|
if (!netusb_enabled()) {
|
|
LOG_ERR("interface disabled");
|
|
return -ENODEV;
|
|
}
|
|
|
|
ret = netusb.func->send_pkt(pkt);
|
|
if (ret) {
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct net_if *netusb_net_iface(void)
|
|
{
|
|
return netusb.iface;
|
|
}
|
|
|
|
void netusb_recv(struct net_pkt *pkt)
|
|
{
|
|
LOG_DBG("Recv pkt, len %u", net_pkt_get_len(pkt));
|
|
|
|
if (net_recv_data(netusb.iface, pkt) < 0) {
|
|
LOG_ERR("Packet %p dropped by NET stack", pkt);
|
|
net_pkt_unref(pkt);
|
|
}
|
|
}
|
|
|
|
static int netusb_connect_media(void)
|
|
{
|
|
LOG_DBG("");
|
|
|
|
if (!netusb_enabled()) {
|
|
LOG_ERR("interface disabled");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (!netusb.func->connect_media) {
|
|
return -ENOTSUP;
|
|
}
|
|
|
|
return netusb.func->connect_media(true);
|
|
}
|
|
|
|
static int netusb_disconnect_media(void)
|
|
{
|
|
LOG_DBG("");
|
|
|
|
if (!netusb_enabled()) {
|
|
LOG_ERR("interface disabled");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (!netusb.func->connect_media) {
|
|
return -ENOTSUP;
|
|
}
|
|
|
|
return netusb.func->connect_media(false);
|
|
}
|
|
|
|
void netusb_enable(const struct netusb_function *func)
|
|
{
|
|
LOG_DBG("");
|
|
|
|
netusb.func = func;
|
|
|
|
net_if_up(netusb.iface);
|
|
netusb_connect_media();
|
|
}
|
|
|
|
void netusb_disable(void)
|
|
{
|
|
LOG_DBG("");
|
|
|
|
if (!netusb_enabled()) {
|
|
return;
|
|
}
|
|
|
|
netusb.func = NULL;
|
|
|
|
netusb_disconnect_media();
|
|
net_if_down(netusb.iface);
|
|
}
|
|
|
|
bool netusb_enabled(void)
|
|
{
|
|
return !!netusb.func;
|
|
}
|
|
|
|
static void netusb_init(struct net_if *iface)
|
|
{
|
|
static u8_t mac[6] = { 0x00, 0x00, 0x5E, 0x00, 0x53, 0x00 };
|
|
|
|
LOG_DBG("netusb device initialization");
|
|
|
|
netusb.iface = iface;
|
|
|
|
ethernet_init(iface);
|
|
|
|
net_if_set_link_addr(iface, mac, sizeof(mac), NET_LINK_ETHERNET);
|
|
|
|
net_if_down(iface);
|
|
|
|
LOG_INF("netusb initialized");
|
|
}
|
|
|
|
static const struct ethernet_api netusb_api_funcs = {
|
|
.iface_api.init = netusb_init,
|
|
|
|
.get_capabilities = NULL,
|
|
.send = netusb_send,
|
|
};
|
|
|
|
static int netusb_init_dev(struct device *dev)
|
|
{
|
|
ARG_UNUSED(dev);
|
|
return 0;
|
|
}
|
|
|
|
NET_DEVICE_INIT(eth_netusb, "eth_netusb", netusb_init_dev, NULL, NULL,
|
|
CONFIG_ETH_INIT_PRIORITY, &netusb_api_funcs, ETHERNET_L2,
|
|
NET_L2_GET_CTX_TYPE(ETHERNET_L2), NET_ETH_MTU);
|