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authorSusant Sahani <susant@redhat.com>2014-07-14 13:34:18 +0530
committerTom Gundersen <teg@jklm.no>2014-07-14 11:39:20 +0200
commitedb85f0d8d0a84f27308a3728f3fde3c52b9dce2 (patch)
tree21f738340ce15e0230d82b53e471c89c3df89791 /src/libsystemd-network
parent5d8e593dce074bff966fc0a46579c61b4f3bc33a (diff)
networkd: dhcp add vendor class indentifier option 60
Vendor Class Identifier be used by DHCP clients to identify their vendor type and configuration. When using this option, vendors can define their own specific identifier values, such as to convey a particular hardware or operating system configuration or other identifying information. Vendor-specified DHCP options—features that let administrators assign separate options to clients with similar configuration requirements. For example, if DHCP-aware clients for example we want to separate different gateway and option for different set of people (dev/test/hr/finance) in a org or devices for example web/database servers or let's say in a embedded device etc and require a different default gateway or DNS server than the rest of clients.
Diffstat (limited to 'src/libsystemd-network')
-rw-r--r--src/libsystemd-network/dhcp-protocol.h1
-rw-r--r--src/libsystemd-network/sd-dhcp-client.c28
2 files changed, 29 insertions, 0 deletions
diff --git a/src/libsystemd-network/dhcp-protocol.h b/src/libsystemd-network/dhcp-protocol.h
index 8cbd98e4ec..7c06b5ab68 100644
--- a/src/libsystemd-network/dhcp-protocol.h
+++ b/src/libsystemd-network/dhcp-protocol.h
@@ -131,6 +131,7 @@ enum {
DHCP_OPTION_MAXIMUM_MESSAGE_SIZE = 57,
DHCP_OPTION_RENEWAL_T1_TIME = 58,
DHCP_OPTION_REBINDING_T2_TIME = 59,
+ DHCP_OPTION_VENDOR_CLASS_IDENTIFIER = 60,
DHCP_OPTION_CLIENT_IDENTIFIER = 61,
DHCP_OPTION_CLASSLESS_STATIC_ROUTE = 121,
DHCP_OPTION_END = 255,
diff --git a/src/libsystemd-network/sd-dhcp-client.c b/src/libsystemd-network/sd-dhcp-client.c
index 6b19666c3b..3c389931cd 100644
--- a/src/libsystemd-network/sd-dhcp-client.c
+++ b/src/libsystemd-network/sd-dhcp-client.c
@@ -57,6 +57,7 @@ struct sd_dhcp_client {
struct ether_addr mac_addr;
} _packed_ client_id;
char *hostname;
+ char *vendor_class_identifier;
uint32_t xid;
usec_t start_time;
uint16_t secs;
@@ -200,6 +201,23 @@ int sd_dhcp_client_set_hostname(sd_dhcp_client *client,
return 0;
}
+int sd_dhcp_client_set_vendor_class_identifier(sd_dhcp_client *client,
+ const char *vci) {
+ char *new_vci = NULL;
+
+ assert_return(client, -EINVAL);
+
+ new_vci = strdup(vci);
+ if (!new_vci)
+ return -ENOMEM;
+
+ free(client->vendor_class_identifier);
+
+ client->vendor_class_identifier = new_vci;
+
+ return 0;
+}
+
int sd_dhcp_client_get_lease(sd_dhcp_client *client, sd_dhcp_lease **ret) {
assert_return(client, -EINVAL);
assert_return(ret, -EINVAL);
@@ -419,6 +437,15 @@ static int client_send_discover(sd_dhcp_client *client) {
return r;
}
+ if (client->vendor_class_identifier) {
+ r = dhcp_option_append(&discover->dhcp, optlen, &optoffset, 0,
+ DHCP_OPTION_VENDOR_CLASS_IDENTIFIER,
+ strlen(client->vendor_class_identifier),
+ client->vendor_class_identifier);
+ if (r < 0)
+ return r;
+ }
+
r = dhcp_option_append(&discover->dhcp, optlen, &optoffset, 0,
DHCP_OPTION_END, 0, NULL);
if (r < 0)
@@ -1406,6 +1433,7 @@ sd_dhcp_client *sd_dhcp_client_unref(sd_dhcp_client *client) {
free(client->req_opts);
free(client->hostname);
+ free(client->vendor_class_identifier);
free(client);
}