int
__arp_lookup(ip_addr_t *host, ip_route_t *rt)
{
int i;
static int next_arp = 0;
for (i = 0; i < NUM_ARP; i++) {
if (memcmp(host, &routes[i].ip_addr, sizeof(*host)) == 0) {
// This is a known host
memcpy(rt, &routes[i], sizeof(*rt));
return 0;
}
}
memcpy(&rt->ip_addr, host, sizeof(*host));
if (((*host)[0] == 0xFF) && ((*host)[1] == 0xFF) && ((*host)[2] == 0xFF)) {
memset(&rt->enet_addr, 0xFF, sizeof(rt->enet_addr));
return 0;
#ifdef CYGSEM_REDBOOT_NETWORKING_USE_GATEWAY
} else if (!__ip_addr_local(host)) {
// non-local IP address -- look up Gateway's Ethernet address
host = &__local_ip_gate;
#endif
}
if (__arp_request(host, &rt->enet_addr, 0) < 0) {
return -1;
} else {
memcpy(&routes[next_arp], rt, sizeof(*rt));
if (++next_arp == NUM_ARP) next_arp = 0;
return 0;
}
}
void
net_init(void)
{
cyg_netdevtab_entry_t *t;
unsigned index;
struct eth_drv_sc *primary_net = (struct eth_drv_sc *)0;
#if defined(CYGHWR_NET_DRIVERS) && (CYGHWR_NET_DRIVERS > 1)
char *default_devname;
int default_index;
#endif
#ifdef CYGDAT_REDBOOT_DEFAULT_BOOTP_SERVER_IP_ADDR
char ip_addr[16];
#endif
// Set defaults as appropriate
#ifdef CYGSEM_REDBOOT_DEFAULT_NO_BOOTP
use_bootp = false;
#else
use_bootp = true;
#endif
#ifdef CYGDBG_REDBOOT_NET_DEBUG
net_debug = true;
#else
net_debug = false;
#endif
gdb_port = CYGNUM_REDBOOT_NETWORKING_TCP_PORT;
#ifdef CYGSEM_REDBOOT_FLASH_CONFIG
// Fetch values from saved config data, if available
#if defined(CYGHWR_NET_DRIVERS) && (CYGHWR_NET_DRIVERS > 1)
flash_get_config("net_device", &default_devname, CONFIG_NETPORT);
#endif
flash_get_config("net_debug", &net_debug, CONFIG_BOOL);
flash_get_config("gdb_port", &gdb_port, CONFIG_INT);
flash_get_config("bootp", &use_bootp, CONFIG_BOOL);
if (!use_bootp) {
flash_get_IP("bootp_my_ip", &__local_ip_addr);
#ifdef CYGSEM_REDBOOT_NETWORKING_USE_GATEWAY
flash_get_IP("bootp_my_ip_mask", &__local_ip_mask);
flash_get_IP("bootp_my_gateway_ip", &__local_ip_gate);
#endif
}
#endif
# ifdef CYGDBG_IO_ETH_DRIVERS_DEBUG
// Don't override if the user has deliberately set something more
// verbose.
if (0 == cyg_io_eth_net_debug)
cyg_io_eth_net_debug = net_debug;
# endif
have_net = false;
// Make sure the recv buffers are set up
eth_drv_buffers_init();
__pktbuf_init();
// Initialize network device(s).
#if defined(CYGHWR_NET_DRIVERS) && (CYGHWR_NET_DRIVERS > 1)
default_index = net_devindex(default_devname);
if (default_index < 0)
default_index = 0;
#ifdef CYGSEM_REDBOOT_NETWORK_INIT_ONE_DEVICE
if ((t = net_devtab_entry(default_index)) != NULL && t->init(t)) {
t->status = CYG_NETDEVTAB_STATUS_AVAIL;
primary_net = __local_enet_sc;
} else
#endif
#endif
for (index = 0; (t = net_devtab_entry(index)) != NULL; index++) {
#if defined(CYGSEM_REDBOOT_NETWORK_INIT_ONE_DEVICE)
if (index == default_index)
continue;
#endif
if (t->init(t)) {
t->status = CYG_NETDEVTAB_STATUS_AVAIL;
if (primary_net == (struct eth_drv_sc *)0) {
primary_net = __local_enet_sc;
}
#if defined(CYGHWR_NET_DRIVERS) && (CYGHWR_NET_DRIVERS > 1)
#if !defined(CYGSEM_REDBOOT_NETWORK_INIT_ONE_DEVICE)
if (index == default_index) {
primary_net = __local_enet_sc;
}
#else
break;
#endif
#endif
}
}
__local_enet_sc = primary_net;
if (!__local_enet_sc) {
diag_printf("No network interfaces found\n");
return;
}
// Initialize the network [if present]
if (use_bootp) {
if (__bootp_find_local_ip(&my_bootp_info) == 0) {
have_net = true;
} else {
// Is it an unset address, or has it been set to a static addr
if (__local_ip_addr[0] == 0 && __local_ip_addr[1] == 0 &&
__local_ip_addr[2] == 0 && __local_ip_addr[3] == 0) {
show_eth_info();
diag_printf("Can't get BOOTP info for device!\n");
} else {
diag_printf("Can't get BOOTP info, using default IP address\n");
have_net = true;
}
}
} else {
enet_addr_t enet_addr;
have_net = true; // Assume values in FLASH were OK
// Tell the world that we are using this fixed IP address
if (__arp_request((ip_addr_t *)__local_ip_addr, &enet_addr, 1) >= 0) {
diag_printf("Warning: IP address %s in use\n", inet_ntoa((in_addr_t *)&__local_ip_addr));
}
}
if (have_net) {
show_eth_info();
#ifdef CYGDAT_REDBOOT_DEFAULT_BOOTP_SERVER_IP_ADDR
diag_sprintf(ip_addr, "%d.%d.%d.%d",
CYGDAT_REDBOOT_DEFAULT_BOOTP_SERVER_IP_ADDR);
inet_aton(ip_addr, &my_bootp_info.bp_siaddr);
#endif
#ifdef CYGSEM_REDBOOT_FLASH_CONFIG
flash_get_IP("bootp_server_ip", (ip_addr_t *)&my_bootp_info.bp_siaddr);
#endif
#ifdef CYGPKG_REDBOOT_NETWORKING_DNS
redboot_dns_res_init();
#endif
show_addrs();
net_io_init();
}
}
