static void dhcp_discover(u32 xid) {
struct {
dhcp_msg_t msg;
u8 opt[128];
} s;
u8 *opt = s.opt;
const char *hostname = minip_get_hostname();
memset(&s, 0, sizeof(s));
s.msg.opcode = DHCP_REQUEST;
s.msg.hwtype = HW_ETHERNET;
s.msg.hwalen = 6;
s.msg.xid = xid;
s.msg.cookie = 0x63538263;
minip_get_macaddr(s.msg.chaddr);
*opt++ = OPT_MSG_TYPE;
*opt++ = 1;
*opt++ = OP_DHCPDISCOVER;
if (hostname && hostname[0]) {
size_t len = strlen(hostname);
*opt++ = OPT_HOSTNAME;
*opt++ = len;
memcpy(opt, hostname, len);
opt += len;
}
*opt++ = OPT_DONE;
udp_send(&s.msg, sizeof(dhcp_msg_t) + (opt - s.opt), dhcp_udp_handle);
status_t ret = udp_send(&s.msg, sizeof(dhcp_msg_t) + (opt - s.opt), dhcp_udp_handle);
if (ret != NO_ERROR) {
printf("DHCP_DISCOVER failed: %d\n", ret);
}
}
static int cmd_minip(int argc, const cmd_args *argv)
{
if (argc == 1) {
minip_usage:
printf("minip commands\n");
printf("mi [a]rp dump arp table\n");
printf("mi [s]tatus print ip status\n");
printf("mi [t]est [dest] [port] [cnt] send <cnt> test packets to the dest:port\n");
} else {
switch (argv[1].str[0]) {
case 'a':
arp_cache_dump();
break;
case 's': {
uint32_t ipaddr = minip_get_ipaddr();
printf("hostname: %s\n", minip_get_hostname());
printf("ip: %u.%u.%u.%u\n", IPV4_SPLIT(ipaddr));
}
break;
case 't': {
uint32_t count = 1;
uint32_t host = 0x0100000A; // 10.0.0.1
uint32_t port = 1025;
udp_socket_t *handle;
switch (argc) {
case 5:
count = argv[4].u;
case 4:
port = argv[3].u;
case 3:
host = str_ip_to_int(argv[2].str, strlen(argv[2].str));
break;
}
if (udp_open(host, port, port, &handle) != NO_ERROR) {
printf("udp_open to %u.%u.%u.%u:%u failed\n", IPV4_SPLIT(host), port);
return -1;
}
#define BUFSIZE 1470
uint8_t *buf;
buf = malloc(BUFSIZE);
if (!buf) {
udp_close(handle);
return -1;
}
memset(buf, 0x00, BUFSIZE);
printf("sending %u packet(s) to %u.%u.%u.%u:%u\n", count, IPV4_SPLIT(host), port);
lk_time_t t = current_time();
uint32_t failures = 0;
for (uint32_t i = 0; i < count; i++) {
if (udp_send(buf, BUFSIZE, handle) != 0) {
failures++;
}
buf[128]++;
}
t = current_time() - t;
printf("%d pkts failed\n", failures);
uint64_t total_count = (uint64_t)count * BUFSIZE;
printf("wrote %llu bytes in %u msecs (%llu bytes/sec)\n",
total_count, (uint32_t)t, total_count * 1000 / t);
free(buf);
udp_close(handle);
#undef BUFSIZE
}
break;
default:
goto minip_usage;
}
}
return 0;
}
