diff options
| author | Rainer Jochem <rainer.jochem@mpi-sb.mpg.de> | 2007-11-14 02:18:39 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-28 14:53:59 -0800 |
| commit | 62013dbb8418eb7231c1577d238cf2e76b7696b0 (patch) | |
| tree | dfcfab3399f653bdf04a9bec21acba294fcf075b /net | |
| parent | 20fea08b5fb639c4c175b5c74a2bb346c5c5bc2e (diff) | |
[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>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/ipconfig.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c index b8f7763b226..6422422b8e3 100644 --- a/net/ipv4/ipconfig.c +++ b/net/ipv4/ipconfig.c @@ -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); |