2013-10-21 20:12:52 +02:00
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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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2013-11-07 03:38:08 +01:00
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#pragma once
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2013-10-21 20:12:52 +02:00
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/***
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This file is part of systemd.
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Copyright 2013 Tom Gundersen <teg@jklm.no>
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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2013-11-07 03:39:32 +01:00
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#include <linux/netlink.h>
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2013-10-21 20:12:52 +02:00
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#include "refcnt.h"
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2013-11-13 23:18:20 +01:00
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#include "prioq.h"
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2013-11-30 01:24:29 +01:00
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#include "list.h"
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2013-11-13 23:18:20 +01:00
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#include "sd-rtnl.h"
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2014-03-08 01:05:02 +01:00
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#define RTNL_DEFAULT_TIMEOUT ((usec_t) (25 * USEC_PER_SEC))
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2014-01-29 21:20:30 +01:00
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#define RTNL_WQUEUE_MAX 1024
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#define RTNL_RQUEUE_MAX 64*1024
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#define RTNL_CONTAINER_DEPTH 32
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2013-11-13 23:18:20 +01:00
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struct reply_callback {
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sd_rtnl_message_handler_t callback;
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void *userdata;
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usec_t timeout;
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uint64_t serial;
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unsigned prioq_idx;
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};
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2013-10-21 20:12:52 +02:00
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2013-11-30 01:24:29 +01:00
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struct match_callback {
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sd_rtnl_message_handler_t callback;
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2013-12-06 15:20:36 +01:00
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uint16_t type;
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2013-11-30 01:24:29 +01:00
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void *userdata;
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LIST_FIELDS(struct match_callback, match_callbacks);
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};
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2013-10-21 20:12:52 +02:00
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struct sd_rtnl {
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RefCount n_ref;
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int fd;
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union {
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struct sockaddr sa;
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struct sockaddr_nl nl;
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} sockaddr;
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2013-11-12 22:37:51 +01:00
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sd_rtnl_message **rqueue;
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unsigned rqueue_size;
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sd_rtnl_message **wqueue;
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unsigned wqueue_size;
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bool processing:1;
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2013-10-29 21:20:25 +01:00
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uint32_t serial;
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2013-11-13 23:18:20 +01:00
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struct Prioq *reply_callbacks_prioq;
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Hashmap *reply_callbacks;
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2013-11-30 01:24:29 +01:00
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LIST_HEAD(struct match_callback, match_callbacks);
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2013-10-29 17:38:31 +01:00
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pid_t original_pid;
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2013-11-14 19:23:39 +01:00
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sd_event_source *io_event_source;
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sd_event_source *time_event_source;
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2013-12-12 22:21:25 +01:00
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sd_event_source *exit_event_source;
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2013-11-14 19:23:39 +01:00
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sd_event *event;
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2013-10-21 20:12:52 +02:00
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};
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2013-10-29 16:35:37 +01:00
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2014-01-29 21:20:30 +01:00
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struct sd_rtnl_message {
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RefCount n_ref;
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2013-11-12 22:37:51 +01:00
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2014-02-18 00:10:08 +01:00
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sd_rtnl *rtnl;
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2014-01-29 21:20:30 +01:00
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struct nlmsghdr *hdr;
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size_t container_offsets[RTNL_CONTAINER_DEPTH]; /* offset from hdr to each container's start */
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unsigned n_containers; /* number of containers */
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size_t next_rta_offset; /* offset from hdr to next rta */
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2014-03-23 21:45:46 +01:00
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size_t *rta_offset_tb[RTNL_CONTAINER_DEPTH];
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unsigned short rta_tb_size[RTNL_CONTAINER_DEPTH];
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2014-01-29 21:20:30 +01:00
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bool sealed:1;
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};
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2013-12-06 15:13:34 +01:00
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2014-02-18 00:10:08 +01:00
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int message_new(sd_rtnl *rtnl, sd_rtnl_message **ret, size_t initial_size);
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2013-12-06 15:13:34 +01:00
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2013-10-21 20:12:52 +02:00
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int socket_write_message(sd_rtnl *nl, sd_rtnl_message *m);
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int socket_read_message(sd_rtnl *nl, sd_rtnl_message **ret);
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2013-11-13 23:18:20 +01:00
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2014-03-05 16:13:25 +01:00
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int rtnl_message_read_internal(sd_rtnl_message *m, unsigned short type, void **data);
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int rtnl_message_parse(sd_rtnl_message *m,
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size_t **rta_offset_tb,
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unsigned short *rta_tb_size,
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int max,
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struct rtattr *rta,
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unsigned int rt_len);
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2013-11-13 23:18:20 +01:00
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/* Make sure callbacks don't destroy the rtnl connection */
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#define RTNL_DONT_DESTROY(rtnl) \
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2014-02-13 03:44:14 +01:00
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_cleanup_rtnl_unref_ _unused_ sd_rtnl *_dont_destroy_##rtnl = sd_rtnl_ref(rtnl)
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