dhcp: implement dhcp-vendor-class-identifier option for systemd's DHCP

client

https://bugzilla.redhat.com/show_bug.cgi?id=1871042
Signed-off-by: Antonio Cardace <acardace@redhat.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/src/dhcp/nm-dhcp-systemd.c b/src/dhcp/nm-dhcp-systemd.c
index 737faad937..737ccacc48 100644
--- a/src/dhcp/nm-dhcp-systemd.c
+++ b/src/dhcp/nm-dhcp-systemd.c
@@ -569,6 +569,7 @@ ip4_start (NMDhcpClient *client,
 	int arp_type;
 	GBytes *client_id;
 	gs_unref_bytes GBytes *client_id_new = NULL;
+	GBytes *vendor_class_identifier;
 	const uint8_t *client_id_arr;
 	size_t client_id_len;
 	struct in_addr last_addr = { 0 };
@@ -698,6 +699,24 @@ ip4_start (NMDhcpClient *client,
 		}
 	}
 
+	vendor_class_identifier = nm_dhcp_client_get_vendor_class_identifier (client);
+	if (vendor_class_identifier) {
+		const char *option_data;
+		gsize len;
+
+		option_data = g_bytes_get_data (vendor_class_identifier, &len);
+		nm_assert (option_data);
+		nm_assert (len <= 255);
+
+		option_data = nm_strndup_a (300, option_data, len, NULL);
+
+		r = sd_dhcp_client_set_vendor_class_identifier (sd_client, option_data);
+		if (r < 0) {
+			nm_utils_error_set_errno (error, r, "failed to set DHCP vendor class identifier: %s");
+			return FALSE;
+		}
+	}
+
 	r = sd_dhcp_client_set_callback (sd_client, dhcp_event_cb, client);
 	if (r < 0) {
 		nm_utils_error_set_errno (error, r, "failed to set callback: %s");