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+/*
+ * Copyright (c) 2015 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/*
+ * client.h: dhcp client
+ */
+
+#ifndef included_dhcp_client_h
+#define included_dhcp_client_h
+
+#define foreach_dhcp_client_state \
+_(DHCP_DISCOVER) \
+_(DHCP_REQUEST) \
+_(DHCP_BOUND)
+
+typedef enum {
+#define _(a) a,
+ foreach_dhcp_client_state
+#undef _
+} dhcp_client_state_t;
+
+typedef struct {
+ dhcp_client_state_t state;
+
+ /* the interface in question */
+ u32 sw_if_index;
+
+ /* State machine retry counter */
+ u32 retry_count;
+
+ /* Send next pkt at this time */
+ f64 next_transmit;
+ f64 lease_expires;
+
+ /* DHCP transaction ID, a random number */
+ u32 transaction_id;
+
+ /* leased address, other learned info DHCP */
+ ip4_address_t leased_address; /* from your_ip_address field */
+ ip4_address_t dhcp_server;
+ u32 subnet_mask_width; /* option 1 */
+ ip4_address_t router_address; /* option 3 */
+ u32 lease_renewal_interval; /* option 51 */
+ u32 lease_lifetime; /* option 59 */
+
+ /* Requested data (option 55) */
+ u8 * option_55_data;
+
+ u8 * l2_rewrite;
+
+ /* hostname and software client identifiers */
+ u8 * hostname;
+ u8 * client_identifier; /* software version, e.g. vpe 1.0*/
+
+ /* Information used for event callback */
+ u32 client_index;
+ u32 pid;
+ void * event_callback;
+} dhcp_client_t;
+
+typedef struct {
+ /* DHCP client pool */
+ dhcp_client_t * clients;
+ uword * client_by_sw_if_index;
+ u32 seed;
+
+ /* convenience */
+ vlib_main_t * vlib_main;
+ vnet_main_t * vnet_main;
+} dhcp_client_main_t;
+
+typedef struct {
+ int is_add;
+ u32 sw_if_index;
+
+ /* vectors, consumed by dhcp client code */
+ u8 * hostname;
+ u8 * client_identifier;
+
+ /* Bytes containing requested option numbers */
+ u8 * option_55_data;
+
+ /* Information used for event callback */
+ u32 client_index;
+ u32 pid;
+ void * event_callback;
+} dhcp_client_add_del_args_t;
+
+dhcp_client_main_t dhcp_client_main;
+
+#define EVENT_DHCP_CLIENT_WAKEUP 1
+
+int dhcp_client_for_us (u32 bi0,
+ vlib_buffer_t * b0,
+ ip4_header_t * ip0,
+ udp_header_t * u0,
+ dhcp_header_t * dh0);
+
+int dhcp_client_config (vlib_main_t * vm,
+ u32 sw_if_index,
+ u8 * hostname,
+ u32 is_add,
+ u32 client_index,
+ void *event_callback,
+ u32 pid);
+
+#endif /* included_dhcp_client_h */