unbound
0.1
|
This file describes the worker structure that holds a list of pending requests and handles them. More...
#include "util/netevent.h"
#include "util/locks.h"
#include "util/alloc.h"
#include "util/data/msgreply.h"
#include "util/data/msgparse.h"
#include "daemon/stats.h"
#include "util/module.h"
Data Structures | |
struct | worker |
Structure holding working information for unbound. More... |
Enumerations | |
enum | worker_commands { worker_cmd_quit, worker_cmd_stats, worker_cmd_stats_noreset, worker_cmd_remote } |
worker commands More... |
Functions | |
struct worker * | worker_create (struct daemon *daemon, int id, int *ports, int n) |
Create the worker structure. | |
int | worker_init (struct worker *worker, struct config_file *cfg, struct listen_port *ports, int do_sigs) |
Initialize worker. | |
void | worker_work (struct worker *worker) |
Make worker work. | |
void | worker_delete (struct worker *worker) |
Delete worker. | |
void | worker_send_cmd (struct worker *worker, enum worker_commands cmd) |
Send a command to a worker. | |
void | worker_sighandler (int sig, void *arg) |
Worker signal handler function. | |
struct outbound_entry * | worker_send_query (uint8_t *qname, size_t qnamelen, uint16_t qtype, uint16_t qclass, uint16_t flags, int dnssec, int want_dnssec, struct sockaddr_storage *addr, socklen_t addrlen, uint8_t *zone, size_t zonelen, struct module_qstate *q) |
Worker service routine to send serviced queries to authoritative servers. | |
void | worker_handle_control_cmd (struct tube *tube, uint8_t *msg, size_t len, int error, void *arg) |
process control messages from the main thread. | |
int | worker_handle_request (struct comm_point *c, void *arg, int error, struct comm_reply *repinfo) |
handles callbacks from listening event interface | |
int | worker_handle_reply (struct comm_point *c, void *arg, int error, struct comm_reply *reply_info) |
process incoming replies from the network | |
int | worker_handle_service_reply (struct comm_point *c, void *arg, int error, struct comm_reply *reply_info) |
process incoming serviced query replies from the network | |
void | worker_alloc_cleanup (void *arg) |
cleanup the cache to remove all rrset IDs from it, arg is worker | |
void | worker_stats_clear (struct worker *worker) |
Init worker stats - includes server_stats_init, outside network and mesh. | |
void | worker_stat_timer_cb (void *arg) |
statistics timer callback handler | |
void | worker_probe_timer_cb (void *arg) |
probe timer callback handler | |
void | worker_start_accept (void *arg) |
start accept callback handler | |
void | worker_stop_accept (void *arg) |
stop accept callback handler |
This file describes the worker structure that holds a list of pending requests and handles them.
enum worker_commands |
Create the worker structure.
Bare bones version, zeroed struct, with backpointers only. Use worker_init on it later.
daemon,: | the daemon that this worker thread is part of. |
id,: | the thread number from 0.. numthreads-1. |
ports,: | the ports it is allowed to use, array. |
n,: | the number of ports. |
References worker::cmd, worker::daemon, log_err(), memdup(), worker::numports, worker::ports, daemon::rand, worker::rndstate, worker::thread_num, tube_create(), tube_delete(), and ub_initstate().
Referenced by daemon_create_workers().
int worker_init | ( | struct worker * | worker, |
struct config_file * | cfg, | ||
struct listen_port * | ports, | ||
int | do_sigs | ||
) |
Initialize worker.
Allocates event base, listens to ports
worker,: | worker to initialize, created with worker_create. |
cfg,: | configuration settings. |
ports,: | list of shared query ports. |
do_sigs,: | if true, worker installs signal handlers. |
References worker::alloc, module_env::alloc, alloc_init(), alloc_set_id_cleanup(), module_env::anchors, module_env::attach_sub, autr_get_num_anchors(), worker::back, worker::base, module_env::cfg, worker::cmd, comm_base_timept(), comm_signal_create(), comm_timer_create(), comm_timer_set(), worker::comsig, worker::daemon, daemon_remote_open_accept(), module_env::detach_subs, module_env::detect_cycle, config_file::do_ip4, config_file::do_ip6, config_file::do_tcp, config_file::do_udp, daemon::env, worker::env, forwards_apply_cfg(), forwards_create(), worker::front, module_env::fwds, module_env::hints, hints_apply_cfg(), hints_create(), config_file::incoming_num_tcp, module_env::infra_cache, module_env::kill_sub, listen_create(), daemon::listen_sslctx, log_err(), log_set_time(), module_env::mesh, mesh_attach_sub(), mesh_create(), mesh_detach_subs(), mesh_detect_cycle(), mesh_state_delete(), daemon::mods, config_file::msg_buffer_size, worker::need_to_exit, module_env::now, module_env::now_tv, config_file::num_out_ifs, worker::numports, config_file::out_ifs, config_file::outgoing_num_ports, config_file::outgoing_num_tcp, outside_network_create(), worker::ports, module_env::probe_timer, daemon::rc, daemon::rc_ports, regional_create_custom(), module_env::rnd, worker::rndstate, module_env::scratch, module_env::scratch_buffer, worker::scratchpad, module_env::send_query, server_stats_init(), config_file::stat_interval, worker::stat_timer, worker::stats, daemon::superalloc, worker::thread_num, tube_setup_bg_listen(), ub_thread_sig_unblock(), config_file::unwanted_threshold, config_file::use_caps_bits_for_id, VERB_ALGO, verbose(), module_env::worker, worker_alloc_cleanup(), worker_delete(), worker_handle_control_cmd(), worker_handle_request(), worker_mem_report(), worker_probe_timer_cb(), worker_restart_timer(), worker_send_query(), worker_sighandler(), worker_start_accept(), worker_stat_timer_cb(), and worker_stop_accept().
Referenced by daemon_fork(), and thread_start().
void worker_send_cmd | ( | struct worker * | worker, |
enum worker_commands | cmd | ||
) |
Send a command to a worker.
Uses blocking writes.
worker,: | worker to send command to. |
cmd,: | command to send. |
References worker::cmd, log_err(), and tube_write_msg().
Referenced by daemon_stop_others(), distribute_cmd(), and server_stats_obtain().
void worker_sighandler | ( | int | sig, |
void * | arg | ||
) |
Worker signal handler function.
User argument is the worker itself.
sig,: | signal number. |
arg,: | the worker (main worker) that handles signals. |
References worker::base, comm_base_exit(), log_err(), worker::need_to_exit, VERB_QUERY, and verbose().
Referenced by fptr_whitelist_comm_signal(), signal_handling_playback(), and worker_init().
|
read |
Worker service routine to send serviced queries to authoritative servers.
qname,: | query name. (host order) |
qnamelen,: | length in bytes of qname, including trailing 0. |
qtype,: | query type. (host order) |
qclass,: | query class. (host order) |
flags,: | host order flags word, with opcode and CD bit. |
dnssec,: | if set, EDNS record will have DO bit set. |
want_dnssec,: | signatures needed. |
addr,: | where to. |
addrlen,: | length of addr. |
zone,: | wireformat dname of the zone. |
zonelen,: | length of zone name. |
q,: | wich query state to reactivate upon return. |
References worker::back, module_env::cfg, module_qstate::env, outbound_entry_compare(), outnet_serviced_query(), outbound_entry::qsent, outbound_entry::qstate, module_qstate::region, regional_alloc(), config_file::ssl_upstream, config_file::tcp_upstream, outside_network::udp_buff, module_env::worker, and worker_handle_service_reply().
Referenced by fptr_whitelist_modenv_send_query(), and worker_init().
void worker_handle_control_cmd | ( | struct tube * | tube, |
uint8_t * | msg, | ||
size_t | len, | ||
int | error, | ||
void * | arg | ||
) |
process control messages from the main thread.
Frees the control command message.
tube,: | tube control message came on. |
msg,: | message contents. Is freed. |
len,: | length of message. |
error,: | if error (NETEVENT_*) happened. |
arg,: | user argument |
Referenced by fptr_whitelist_tube_listen(), and worker_init().
void worker_stats_clear | ( | struct worker * | worker | ) |
Init worker stats - includes server_stats_init, outside network and mesh.
worker,: | the worker to init |
References worker::back, module_env::cfg, worker::env, module_env::mesh, mesh_stats_clear(), server_stats_init(), worker::stats, and outside_network::unwanted_replies.
Referenced by do_flush_stats(), server_stats_compile(), and worker_stat_timer_cb().