For net boot setups it is useful to submit boot params like server or
bootfile over dhcp. To distinguish diffrent type of OS running on the same hardware,
a custom client uuid can be sent in dhcp discover/request messages.
E.g. the ISC dhcp server can be configured with
| option client-uuid code 97 = { unsigned integer 8, string };
| class "at91sam9x5ek" {
| match if substring (option vendor-class-identifier,0,20) = "barebox-at91sam9x5ek";
|
| filename "/tftpboot/atmel/at91sam9x5/sam9x5ek/zImage";
| if substring (option dhcp-client-identifier,0,7) = "ser2net" {
| filename "/tftpboot/atmel/at91sam9x5/sam9x5ek/zImage-ser2net";
| }
| if substring (option client-uuid,0,7) = "test" {
| filename "/tftpboot/atmel/at91sam9x5/sam9x5ek/zImage-ser2net";
| }
| option tftp-server-name "192.168.200.98";
| option option-150 192.168.200.98;
| next-server 192.168.200.98;
| option root-path "192.168.200.98:/opt/work/buildroot/build/sam9x5/target";
| }
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@xxxxxxxxxxxx>
---
net/dhcp.c | 15 ++++++++++++++-
1 files changed, 14 insertions(+), 1 deletions(-)
diff --git a/net/dhcp.c b/net/dhcp.c
index 5b1ab5a..e452a92 100644
--- a/net/dhcp.c
+++ b/net/dhcp.c
@@ -258,6 +258,7 @@ static int dhcp_set_string_options(struct dhcp_param *param, u8 *e)
#define DHCP_VENDOR_ID 60
#define DHCP_CLIENT_ID 61
+#define DHCP_CLIENT_UUID 97
struct dhcp_param dhcp_params[] = {
{
@@ -268,6 +269,10 @@ struct dhcp_param dhcp_params[] = {
.option = DHCP_CLIENT_ID,
.handle = dhcp_set_string_options,
.barebox_var_name = "dhcp_client_id",
+ }, {
+ .option = DHCP_CLIENT_UUID,
+ .handle = dhcp_set_string_options,
+ .barebox_var_name = "dhcp_client_uuid",
}
};
@@ -623,7 +628,7 @@ static int do_dhcp(int argc, char *argv[])
dhcp_reset_env();
- while((opt = getopt(argc, argv, "v:c:")) > 0) {
+ while((opt = getopt(argc, argv, "v:c:u:")) > 0) {
switch(opt) {
case 'v':
dhcp_set_param_data(DHCP_VENDOR_ID, optarg);
@@ -631,6 +636,9 @@ static int do_dhcp(int argc, char *argv[])
case 'c':
dhcp_set_param_data(DHCP_CLIENT_ID, optarg);
break;
+ case 'u':
+ dhcp_set_param_data(DHCP_CLIENT_UUID, optarg);
+ break;
}
}
@@ -682,6 +690,10 @@ BAREBOX_CMD_HELP_OPT ("-v <vendor_id>",
BAREBOX_CMD_HELP_OPT ("-c <client_id>",
"DHCP Client ID (code 61) submitted in DHCP requests. It can\n"
"be used in the DHCP server's configuration to select options\n"
+"(e.g. bootfile or server) which are valid for barebox clients only.\n")
+BAREBOX_CMD_HELP_OPT ("-u <client_uuid>",
+"DHCP Client UUID (code 97) submitted in DHCP requests. It can\n"
+"be used in the DHCP server's configuration to select options\n"
"(e.g. bootfile or server) which are valid for barebox clients only.\n");
BAREBOX_CMD_HELP_END
@@ -697,5 +709,6 @@ BAREBOX_MAGICVAR(hostname, "hostname returned from DHCP request");
BAREBOX_MAGICVAR(domainname, "domainname returned from DHCP request");
BAREBOX_MAGICVAR(rootpath, "rootpath returned from DHCP request");
BAREBOX_MAGICVAR(dhcp_vendor_id, "vendor id to send to the DHCP server");
+BAREBOX_MAGICVAR(dhcp_client_uuid, "cliend uuid to send to the DHCP server");
BAREBOX_MAGICVAR(dhcp_client_id, "cliend id to send to the DHCP server");
BAREBOX_MAGICVAR(dhcp_tftp_server_name, "TFTP server Name returned from DHCP request");
--
1.7.9.1
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