Messages in this thread Patch in this message |  | | | Date | Wed, 14 Nov 2007 10:45:08 +0100 | | From | Rainer Jochem <> | | Subject | Re: [PATCH] ipconfig.c : implement DHCP Class-identifier |
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> I don't think its very useful since you can simply get this information > from /proc/cmdline in case something goes wrong, but if you insist at > least give it a meaningful prefix.
Added.
> The initialization is unnecessary.
Removed.
> Should be >= I think.
Fixed.
Regards, Rainer
---- --- net/ipv4/ipconfig.c.orig 2007-11-14 09:16:15.800566536 +0100 +++ net/ipv4/ipconfig.c 2007-11-14 10:34:22.471219274 +0100 @@ -139,6 +139,8 @@ __be32 ic_servaddr = NONE; /* Boot serve __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 */ @@ -580,6 +582,7 @@ 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); @@ -620,6 +623,16 @@ 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 */ @@ -1507,5 +1520,16 @@ static int __init nfsaddrs_config_setup( 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); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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