static void gateway_handle(struct dhcp_opt *opt, unsigned char *popt, int optlen)
{
IPaddr_t ip;
ip = net_read_ip(popt);
net_set_gateway(ip);
}
static void dhcp_options_process(unsigned char *popt, struct bootp *bp)
{
unsigned char *end = popt + sizeof(*bp) + OPT_SIZE;
int oplen;
IPaddr_t ip;
char str[256];
while (popt < end && *popt != 0xff) {
oplen = *(popt + 1);
switch (*popt) {
case 1:
ip = net_read_ip(popt + 2);
net_set_netmask(ip);
break;
case 3:
ip = net_read_ip(popt + 2);
net_set_gateway(ip);
break;
case 6:
ip = net_read_ip(popt + 2);
setenv_ip("nameserver", ip);
break;
case 12:
memcpy(str, popt + 2, oplen);
str[oplen] = 0;
setenv("hostname", str);
break;
case 15:
memcpy(str, popt + 2, oplen);
str[oplen] = 0;
setenv("domainname", str);
break;
case 17:
memcpy(str, popt + 2, oplen);
str[oplen] = 0;
setenv("rootpath", str);
break;
case 51:
net_copy_uint32 (&dhcp_leasetime, (uint32_t *)(popt + 2));
break;
case 53: /* Ignore Message Type Option */
break;
case 54:
net_copy_ip(&net_dhcp_server_ip, (popt + 2));
break;
case 58: /* Ignore Renewal Time Option */
break;
case 59: /* Ignore Rebinding Time Option */
break;
case 66: /* Ignore TFTP server name */
break;
case 67: /* vendor opt bootfile */
/*
* I can't use dhcp_vendorex_proc here because I need
* to write into the bootp packet - even then I had to
* pass the bootp packet pointer into here as the
* second arg
*/
memcpy(str, popt + 2, oplen);
str[oplen] = 0;
if (bp->bp_file[0] == '\0') {
/*
* only use vendor boot file if we didn't
* receive a boot file in the main non-vendor
* part of the packet - god only knows why
* some vendors chose not to use this perfectly
* good spot to store the boot file (join on
* Tru64 Unix) it seems mind bogglingly crazy
* to me
*/
printf("*** WARNING: using vendor "
"optional boot file\n");
setenv("bootfile", str);
}
break;
default:
#ifdef CONFIG_BOOTP_VENDOREX
if (dhcp_vendorex_proc (popt))
break;
#endif
debug("*** Unhandled DHCP Option in OFFER/ACK: %d\n", *popt);
break;
}
popt += oplen + 2; /* Process next option */
}
}