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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
#include <vnet/ip/ip.h>
#include <vnet/dhcp/packet.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 */
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