| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * 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 NETD_RESOLV_PARAMS_H |
| #define NETD_RESOLV_PARAMS_H |
| |
| #include <stdint.h> |
| |
| /* Hard-coded defines */ |
| #define MAXNS 4 /* max # name servers we'll track */ |
| #define MAXDNSRCH 6 /* max # domains in search path */ |
| #define MAXDNSRCHPATH 256 /* max length of domain search paths */ |
| #define MAXNSSAMPLES 64 /* max # samples to store per server */ |
| |
| // Per-netid configuration parameters passed from netd to the resolver |
| // TODO: rename to res_params |
| struct __res_params { |
| uint16_t sample_validity; // sample lifetime in s |
| // threshold of success / total samples below which a server is considered broken |
| uint8_t success_threshold; // 0: disable, value / 100 otherwise |
| uint8_t min_samples; // min # samples needed for statistics to be considered meaningful |
| uint8_t max_samples; // max # samples taken into account for statistics |
| int base_timeout_msec; // base query retry timeout (if 0, use RES_TIMEOUT) |
| }; |
| |
| typedef enum { res_goahead, res_nextns, res_modified, res_done, res_error } res_sendhookact; |
| |
| typedef res_sendhookact (*res_send_qhook)(struct sockaddr* const*, const uint8_t**, int*, uint8_t*, |
| int, int*); |
| |
| typedef res_sendhookact (*res_send_rhook)(const struct sockaddr*, const uint8_t*, int, uint8_t*, |
| int, int*); |
| |
| #define LIBNETD_RESOLV_PUBLIC extern "C" [[gnu::visibility("default")]] |
| |
| // TODO: Remove it after we move PrivateDnsConfiguration and qhook() into libnetd_resolv. |
| #define LIBNETD_RESOLV_TLS_EXPORT [[gnu::visibility("default")]] |
| |
| #endif // NETD_RESOLV_PARAMS_H |