blob: 49ffac85477e73663bc05b4df73853a306d32422 [file] [log] [blame]
/*
* 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_descriptor.h>
#include "netusb.h"
static struct __netusb {
struct net_if *iface;
const struct netusb_function *func;
} netusb;
static int netusb_send(const struct device *dev, struct net_pkt *pkt)
{
int ret;
ARG_UNUSED(dev);
LOG_DBG("Send pkt, len %zu", 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 %zu", 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 uint8_t mac[6] = { 0x00, 0x00, 0x5E, 0x00, 0x53, 0x00 };
LOG_DBG("netusb device initialization");
netusb.iface = iface;
ethernet_init(iface);
net_if_flag_set(iface, NET_IF_NO_AUTO_START);
net_if_set_link_addr(iface, mac, sizeof(mac), NET_LINK_ETHERNET);
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(const struct device *dev)
{
ARG_UNUSED(dev);
return 0;
}
NET_DEVICE_INIT(eth_netusb, "eth_netusb", netusb_init_dev, NULL, NULL, NULL,
CONFIG_ETH_INIT_PRIORITY, &netusb_api_funcs, ETHERNET_L2,
NET_L2_GET_CTX_TYPE(ETHERNET_L2), NET_ETH_MTU);