| Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2015 Cisco and/or its affiliates. |
| 3 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | * you may not use this file except in compliance with the License. |
| 5 | * You may obtain a copy of the License at: |
| 6 | * |
| 7 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | * |
| 9 | * Unless required by applicable law or agreed to in writing, software |
| 10 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | * See the License for the specific language governing permissions and |
| 13 | * limitations under the License. |
| 14 | */ |
| 15 | /* |
| 16 | * client.h: dhcp client |
| 17 | */ |
| 18 | |
| 19 | #ifndef included_dhcp_client_h |
| 20 | #define included_dhcp_client_h |
| 21 | |
| 22 | #define foreach_dhcp_client_state \ |
| 23 | _(DHCP_DISCOVER) \ |
| 24 | _(DHCP_REQUEST) \ |
| 25 | _(DHCP_BOUND) |
| 26 | |
| 27 | typedef enum { |
| 28 | #define _(a) a, |
| 29 | foreach_dhcp_client_state |
| 30 | #undef _ |
| 31 | } dhcp_client_state_t; |
| 32 | |
| 33 | typedef struct { |
| 34 | dhcp_client_state_t state; |
| 35 | |
| 36 | /* the interface in question */ |
| 37 | u32 sw_if_index; |
| 38 | |
| 39 | /* State machine retry counter */ |
| 40 | u32 retry_count; |
| 41 | |
| 42 | /* Send next pkt at this time */ |
| 43 | f64 next_transmit; |
| 44 | f64 lease_expires; |
| 45 | |
| 46 | /* DHCP transaction ID, a random number */ |
| 47 | u32 transaction_id; |
| 48 | |
| 49 | /* leased address, other learned info DHCP */ |
| 50 | ip4_address_t leased_address; /* from your_ip_address field */ |
| 51 | ip4_address_t dhcp_server; |
| 52 | u32 subnet_mask_width; /* option 1 */ |
| 53 | ip4_address_t router_address; /* option 3 */ |
| 54 | u32 lease_renewal_interval; /* option 51 */ |
| 55 | u32 lease_lifetime; /* option 59 */ |
| 56 | |
| 57 | /* Requested data (option 55) */ |
| 58 | u8 * option_55_data; |
| 59 | |
| 60 | u8 * l2_rewrite; |
| 61 | |
| 62 | /* hostname and software client identifiers */ |
| 63 | u8 * hostname; |
| 64 | u8 * client_identifier; /* software version, e.g. vpe 1.0*/ |
| 65 | |
| 66 | /* Information used for event callback */ |
| 67 | u32 client_index; |
| 68 | u32 pid; |
| 69 | void * event_callback; |
| 70 | } dhcp_client_t; |
| 71 | |
| 72 | typedef struct { |
| 73 | /* DHCP client pool */ |
| 74 | dhcp_client_t * clients; |
| 75 | uword * client_by_sw_if_index; |
| 76 | u32 seed; |
| 77 | |
| 78 | /* convenience */ |
| 79 | vlib_main_t * vlib_main; |
| 80 | vnet_main_t * vnet_main; |
| 81 | } dhcp_client_main_t; |
| 82 | |
| 83 | typedef struct { |
| 84 | int is_add; |
| 85 | u32 sw_if_index; |
| 86 | |
| 87 | /* vectors, consumed by dhcp client code */ |
| 88 | u8 * hostname; |
| 89 | u8 * client_identifier; |
| 90 | |
| 91 | /* Bytes containing requested option numbers */ |
| 92 | u8 * option_55_data; |
| 93 | |
| 94 | /* Information used for event callback */ |
| 95 | u32 client_index; |
| 96 | u32 pid; |
| 97 | void * event_callback; |
| 98 | } dhcp_client_add_del_args_t; |
| 99 | |
| 100 | dhcp_client_main_t dhcp_client_main; |
| 101 | |
| 102 | #define EVENT_DHCP_CLIENT_WAKEUP 1 |
| 103 | |
| 104 | int dhcp_client_for_us (u32 bi0, |
| 105 | vlib_buffer_t * b0, |
| 106 | ip4_header_t * ip0, |
| 107 | udp_header_t * u0, |
| 108 | dhcp_header_t * dh0); |
| 109 | |
| 110 | int dhcp_client_config (vlib_main_t * vm, |
| 111 | u32 sw_if_index, |
| 112 | u8 * hostname, |
| 113 | u32 is_add, |
| 114 | u32 client_index, |
| 115 | void *event_callback, |
| 116 | u32 pid); |
| 117 | |
| 118 | #endif /* included_dhcp_client_h */ |