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Commit 62013dbb authored by Rainer Jochem's avatar Rainer Jochem Committed by David S. Miller
Browse files

[IPV4] ipconfig: Implement DHCP Class-identifier 



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

Acked-by: default avatarPatrick McHardy <kaber@trash.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 20fea08b

net/ipv4/ipconfig.c

+24 −0
Original line number Diff line number Diff line
@@ -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);