| /* |
| * Copyright (c) 2011-2016 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. |
| */ |
| #ifndef __included_bfd_protocol_h__ |
| #define __included_bfd_protocol_h__ |
| /** |
| * @file |
| * @brief BFD protocol declarations |
| */ |
| |
| #include <vppinfra/types.h> |
| #include <vppinfra/clib.h> |
| |
| /* *INDENT-OFF* */ |
| typedef CLIB_PACKED (struct { |
| /* |
| An optional Authentication Section MAY be present: |
| |
| 0 1 2 3 |
| 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | Auth Type | Auth Len | Authentication Data... | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| */ |
| u8 type; |
| u8 len; |
| u8 data[0]; |
| }) bfd_auth_t; |
| /* *INDENT-ON* */ |
| |
| /* *INDENT-OFF* */ |
| typedef CLIB_PACKED (struct { |
| /* |
| The Mandatory Section of a BFD Control packet has the following |
| format: |
| |
| 0 1 2 3 |
| 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| |Vers | Diag |Sta|P|F|C|A|D|M| Detect Mult | Length | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | My Discriminator | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | Your Discriminator | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | Desired Min TX Interval | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | Required Min RX Interval | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | Required Min Echo RX Interval | |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| */ |
| struct |
| { |
| u8 vers_diag; |
| u8 sta_flags; |
| u8 detect_mult; |
| u8 length; |
| } head; |
| u32 my_disc; |
| u32 your_disc; |
| u32 des_min_tx; |
| u32 req_min_rx; |
| u32 req_min_echo_rx; |
| }) bfd_pkt_t; |
| /* *INDENT-ON* */ |
| |
| /* *INDENT-OFF* */ |
| typedef CLIB_PACKED (struct { |
| bfd_pkt_t pkt; |
| bfd_auth_t auth; |
| }) bfd_pkt_with_auth_t; |
| /* *INDENT-ON* */ |
| |
| u8 bfd_pkt_get_version (const bfd_pkt_t * pkt); |
| void bfd_pkt_set_version (bfd_pkt_t * pkt, int version); |
| u8 bfd_pkt_get_diag_code (const bfd_pkt_t * pkt); |
| void bfd_pkt_set_diag_code (bfd_pkt_t * pkt, int value); |
| u8 bfd_pkt_get_state (const bfd_pkt_t * pkt); |
| void bfd_pkt_set_state (bfd_pkt_t * pkt, int value); |
| u8 bfd_pkt_get_poll (const bfd_pkt_t * pkt); |
| void bfd_pkt_set_final (bfd_pkt_t * pkt); |
| u8 bfd_pkt_get_final (const bfd_pkt_t * pkt); |
| void bfd_pkt_set_poll (bfd_pkt_t * pkt); |
| u8 bfd_pkt_get_control_plane_independent (const bfd_pkt_t * pkt); |
| void bfd_pkt_set_control_plane_independent (bfd_pkt_t * pkt); |
| u8 bfd_pkt_get_auth_present (const bfd_pkt_t * pkt); |
| void bfd_pkt_set_auth_present (bfd_pkt_t * pkt); |
| u8 bfd_pkt_get_demand (const bfd_pkt_t * pkt); |
| void bfd_pkt_set_demand (bfd_pkt_t * pkt); |
| u8 bfd_pkt_get_multipoint (const bfd_pkt_t * pkt); |
| void bfd_pkt_set_multipoint (bfd_pkt_t * pkt); |
| |
| /* BFD diagnostic codes */ |
| #define foreach_bfd_diag_code(F) \ |
| F (0, no_diag, "No Diagnostic") \ |
| F (1, det_time_exp, "Control Detection Time Expired") \ |
| F (2, echo_failed, "Echo Function Failed") \ |
| F (3, neighbor_sig_down, "Neighbor Signaled Session Down") \ |
| F (4, fwd_plain_reset, "Forwarding Plane Reset") \ |
| F (5, path_down, "Path Down") \ |
| F (6, concat_path_down, "Concatenated Path Down") \ |
| F (7, admin_down, "Administratively Down") \ |
| F (8, reverse_concat_path_down, "Reverse Concatenated Path Down") |
| |
| #define BFD_DIAG_CODE_NAME(t) BFD_DIAG_CODE_##t |
| |
| typedef enum |
| { |
| #define F(n, t, s) BFD_DIAG_CODE_NAME (t) = n, |
| foreach_bfd_diag_code (F) |
| #undef F |
| } bfd_diag_code_e; |
| |
| const char *bfd_diag_code_string (bfd_diag_code_e diag); |
| |
| /* BFD state values */ |
| #define foreach_bfd_state(F) \ |
| F (0, admin_down, "AdminDown") \ |
| F (1, down, "Down") \ |
| F (2, init, "Init") \ |
| F (3, up, "Up") |
| |
| #define BFD_STATE_NAME(t) BFD_STATE_##t |
| |
| typedef enum |
| { |
| #define F(n, t, s) BFD_STATE_NAME (t) = n, |
| foreach_bfd_state (F) |
| #undef F |
| } bfd_state_e; |
| |
| const char *bfd_state_string (bfd_state_e state); |
| |
| #endif /* __included_bfd_protocol_h__ */ |
| |
| /* |
| * fd.io coding-style-patch-verification: ON |
| * |
| * Local Variables: |
| * eval: (c-set-style "gnu") |
| * End: |
| */ |