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[IPV4] ipconfig: Implement DHCP Class-identifier 

From : Rainer Jochem <rainer.jochem@mpi-sb.mpg.de>

Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Rainer Jochem 2007-11-14 02:18:39 -08:00 committed by David S. Miller
parent 20fea08b5f
commit 62013dbb84
1 changed files with 24 additions and 0 deletions
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24
net/ipv4/ipconfig.c
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@ -140,6 +140,8 @@ __be32 ic_servaddr = NONE; /* Boot server IP address */
__be32 root_server_addr = NONE; /* Address of NFS server */
u8 root_server_path[256] = { 0, }; /* Path to mount as root */
static char vendor_class_identifier[253]; /* vendor class identifier */
/* Persistent data: */
static int ic_proto_used; /* Protocol used, if any */
@ -588,6 +590,7 @@ ic_dhcp_init_options(u8 *options)
u8 mt = ((ic_servaddr == NONE)
? DHCPDISCOVER : DHCPREQUEST);
u8 *e = options;
int len;
#ifdef IPCONFIG_DEBUG
printk("DHCP: Sending message type %d\n", mt);
@ -628,6 +631,16 @@ ic_dhcp_init_options(u8 *options)
*e++ = sizeof(ic_req_params);
memcpy(e, ic_req_params, sizeof(ic_req_params));
e += sizeof(ic_req_params);
if (*vendor_class_identifier) {
printk(KERN_INFO "DHCP: sending class identifier \"%s\"\n",
vendor_class_identifier);
*e++ = 60; /* Class-identifier */
len = strlen(vendor_class_identifier);
*e++ = len;
memcpy(e, vendor_class_identifier, len);
e += len;
}
}
*e++ = 255; /* End of the list */
@ -1513,5 +1526,16 @@ static int __init nfsaddrs_config_setup(char *addrs)
return ip_auto_config_setup(addrs);
}
static int __init vendor_class_identifier_setup(char *addrs)
{
if (strlcpy(vendor_class_identifier, addrs,
sizeof(vendor_class_identifier))
>= sizeof(vendor_class_identifier))
printk(KERN_WARNING "DHCP: vendorclass too long, truncated to \"%s\"",
vendor_class_identifier);
return 1;
}
__setup("ip=", ip_auto_config_setup);
__setup("nfsaddrs=", nfsaddrs_config_setup);
__setup("dhcpclass=", vendor_class_identifier_setup);