src/lldpd-structs.c

   1 /* -*- mode: c; c-file-style: "openbsd" -*- */
   2 /*
   3  * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #include <stdlib.h>
  19 #include <unistd.h>
  20 #include <time.h>
  21 #include "lldpd-structs.h"
  22
  23 void
  24 lldpd_chassis_mgmt_cleanup(struct lldpd_chassis *chassis)
  25 {
  26         struct lldpd_mgmt *mgmt, *mgmt_next;
  27         for (mgmt = TAILQ_FIRST(&chassis->c_mgmt);
  28              mgmt != NULL;
  29              mgmt = mgmt_next) {
  30                 mgmt_next = TAILQ_NEXT(mgmt, m_entries);
  31                 free(mgmt);
  32         }
  33         TAILQ_INIT(&chassis->c_mgmt);
  34 }
  35
  36 void
  37 lldpd_chassis_cleanup(struct lldpd_chassis *chassis, int all)
  38 {
  39 #ifdef ENABLE_LLDPMED
  40         free(chassis->c_med_hw);
  41         free(chassis->c_med_sw);
  42         free(chassis->c_med_fw);
  43         free(chassis->c_med_sn);
  44         free(chassis->c_med_manuf);
  45         free(chassis->c_med_model);
  46         free(chassis->c_med_asset);
  47 #endif
  48         free(chassis->c_id);
  49         free(chassis->c_name);
  50         free(chassis->c_descr);
  51         lldpd_chassis_mgmt_cleanup(chassis);
  52         if (all)
  53                 free(chassis);
  54 }
  55
  56 #ifdef ENABLE_DOT1
  57 void
  58 lldpd_vlan_cleanup(struct lldpd_port *port)
  59 {
  60         struct lldpd_vlan *vlan, *vlan_next;
  61         for (vlan = TAILQ_FIRST(&port->p_vlans);
  62             vlan != NULL;
  63             vlan = vlan_next) {
  64                 free(vlan->v_name);
  65                 vlan_next = TAILQ_NEXT(vlan, v_entries);
  66                 free(vlan);
  67         }
  68         TAILQ_INIT(&port->p_vlans);
  69 }
  70
  71 void
  72 lldpd_ppvid_cleanup(struct lldpd_port *port)
  73 {
  74         struct lldpd_ppvid *ppvid, *ppvid_next;
  75         for (ppvid = TAILQ_FIRST(&port->p_ppvids);
  76             ppvid != NULL;
  77             ppvid = ppvid_next) {
  78                 ppvid_next = TAILQ_NEXT(ppvid, p_entries);
  79                 free(ppvid);
  80         }
  81         TAILQ_INIT(&port->p_ppvids);
  82 }
  83
  84 void
  85 lldpd_pi_cleanup(struct lldpd_port *port)
  86 {
  87         struct lldpd_pi *pi, *pi_next;
  88         for (pi = TAILQ_FIRST(&port->p_pids);
  89             pi != NULL;
  90             pi = pi_next) {
  91                 free(pi->p_pi);
  92                 pi_next = TAILQ_NEXT(pi, p_entries);
  93                 free(pi);
  94         }
  95         TAILQ_INIT(&port->p_pids);
  96 }
  97 #endif
  98
  99 /* Cleanup a remote port. The last argument, `expire` is a function that should
 100  * be called when expiration happens. If it is NULL, all remote ports are
 101  * removed. */
 102 void
 103 lldpd_remote_cleanup(struct lldpd_hardware *hardware,
 104     void(*expire)(struct lldpd_hardware *, struct lldpd_port *))
 105 {
 106         struct lldpd_port *port, *port_next;
 107         int del;
 108         for (port = TAILQ_FIRST(&hardware->h_rports);
 109              port != NULL;
 110              port = port_next) {
 111                 port_next = TAILQ_NEXT(port, p_entries);
 112                 del = (expire == NULL);
 113                 if (expire &&
 114                     (time(NULL) - port->p_lastupdate > port->p_chassis->c_ttl)) {
 115                         hardware->h_ageout_cnt++;
 116                         hardware->h_delete_cnt++;
 117                         expire(hardware, port);
 118                         del = 1;
 119                 }
 120                 if (del) {
 121                         if (expire)
 122                                 TAILQ_REMOVE(&hardware->h_rports, port, p_entries);
 123                         lldpd_port_cleanup(port, 1);
 124                         free(port);
 125                 }
 126         }
 127         if (!expire) TAILQ_INIT(&hardware->h_rports);
 128 }
 129
 130 /* If `all' is true, clear all information, including information that
 131    are not refreshed periodically. Port should be freed manually. */
 132 void
 133 lldpd_port_cleanup(struct lldpd_port *port, int all)
 134 {
 135 #ifdef ENABLE_LLDPMED
 136         int i;
 137         if (all)
 138                 for (i=0; i < LLDP_MED_LOCFORMAT_LAST; i++)
 139                         free(port->p_med_location[i].data);
 140 #endif
 141 #ifdef ENABLE_DOT1
 142         lldpd_vlan_cleanup(port);
 143         lldpd_ppvid_cleanup(port);
 144         lldpd_pi_cleanup(port);
 145 #endif
 146         free(port->p_id);
 147         free(port->p_descr);
 148         if (all) {
 149                 free(port->p_lastframe);
 150                 if (port->p_chassis) { /* chassis may not have been attributed, yet */
 151                         port->p_chassis->c_refcount--;
 152                         port->p_chassis = NULL;
 153                 }
 154         }
 155 }
 156
 157 void
 158 lldpd_config_cleanup(struct lldpd_config *config)
 159 {
 160         free(config->c_mgmt_pattern);
 161         free(config->c_cid_pattern);
 162         free(config->c_iface_pattern);
 163         free(config->c_platform);
 164         free(config->c_description);
 165 }