Lionel Gauthier
b3829736e3
git-svn-id: http://svn.eurecom.fr/openair4G/trunk@5282 818b1a75-f10b-46b9-bf7c-635c3b92a50f
178 lines
6.4 KiB
C
Executable File
178 lines
6.4 KiB
C
Executable File
/*******************************************************************************
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Eurecom OpenAirInterface core network
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Copyright(c) 1999 - 2014 Eurecom
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This program is free software; you can redistribute it and/or modify it
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under the terms and conditions of the GNU General Public License,
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version 2, as published by the Free Software Foundation.
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This program is distributed in the hope it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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The full GNU General Public License is included in this distribution in
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the file called "COPYING".
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Contact Information
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Openair Admin: openair_admin@eurecom.fr
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Openair Tech : openair_tech@eurecom.fr
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Forums : http://forums.eurecom.fsr/openairinterface
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Address : EURECOM,
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Campus SophiaTech,
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450 Route des Chappes,
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CS 50193
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06904 Biot Sophia Antipolis cedex,
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FRANCE
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*******************************************************************************/
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/*! \file pgw_lite_paa.c
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* \brief
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* \author Lionel Gauthier
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* \company Eurecom
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* \email: lionel.gauthier@eurecom.fr
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*/
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#include <stdint.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include "intertask_interface.h"
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#include "assertions.h"
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#include "queue.h"
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#include "pgw_lite_paa.h"
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#include "sgw_lite_defs.h"
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#include "spgw_config.h"
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#include "sgw_lite.h"
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//#define PGW_LITE_FREE_ADDR_POOL_CONFIG 1
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extern pgw_app_t pgw_app;
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// Load in PGW pool, configured PAA address pool
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void pgw_lite_load_pool_ip_addresses(void) {
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struct pgw_lite_conf_ipv4_list_elm_s *conf_ipv4_p = NULL;
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struct pgw_lite_ipv4_list_elm_s *ipv4_p = NULL;
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struct pgw_lite_conf_ipv6_list_elm_s *conf_ipv6_p = NULL;
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struct pgw_lite_ipv6_list_elm_s *ipv6_p = NULL;
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char print_buffer[INET6_ADDRSTRLEN];
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STAILQ_INIT(&pgw_app.pgw_lite_ipv4_list_free);
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STAILQ_INIT(&pgw_app.pgw_lite_ipv4_list_allocated);
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STAILQ_INIT(&pgw_app.pgw_lite_ipv6_list_free);
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STAILQ_INIT(&pgw_app.pgw_lite_ipv6_list_allocated);
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STAILQ_FOREACH(conf_ipv4_p, &spgw_config.pgw_config.pgw_lite_ipv4_pool_list, ipv4_entries) {
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ipv4_p = calloc(1, sizeof(struct pgw_lite_ipv4_list_elm_s));
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ipv4_p->addr.s_addr = ntohl(conf_ipv4_p->addr.s_addr);
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STAILQ_INSERT_TAIL(&pgw_app.pgw_lite_ipv4_list_free, ipv4_p, ipv4_entries);
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SPGW_APP_DEBUG("Loaded IPv4 PAA address in pool: %s\n",
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inet_ntoa(conf_ipv4_p->addr));
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}
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STAILQ_FOREACH(conf_ipv6_p, &spgw_config.pgw_config.pgw_lite_ipv6_pool_list, ipv6_entries) {
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ipv6_p = calloc(1, sizeof(struct pgw_lite_ipv6_list_elm_s));
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ipv6_p->addr = conf_ipv6_p->addr;
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ipv6_p->prefix_len = conf_ipv6_p->prefix_len;
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ipv6_p->num_allocated = 0;
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STAILQ_INSERT_TAIL(&pgw_app.pgw_lite_ipv6_list_free, ipv6_p, ipv6_entries);
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if (inet_ntop(AF_INET6, &ipv6_p->addr, print_buffer, INET6_ADDRSTRLEN) == NULL) {
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SPGW_APP_ERROR("Could not Load IPv6 PAA address in pool: %s\n", strerror(errno));
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} else {
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SPGW_APP_DEBUG("Loaded IPv6 PAA prefix in pool: %s\n",print_buffer);
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}
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}
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#if defined(PGW_LITE_FREE_ADDR_POOL_CONFIG)
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while ((conf_ipv4_p = STAILQ_FIRST(&spgw_config.pgw_config.pgw_lite_ipv4_pool_list))) {
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STAILQ_REMOVE_HEAD(&spgw_config.pgw_config.pgw_lite_ipv4_pool_list, ipv4_entries);
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free(conf_ipv4_p);
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}
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while ((conf_ipv6_p = STAILQ_FIRST(&spgw_config.pgw_config.pgw_lite_ipv6_pool_list))) {
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STAILQ_REMOVE_HEAD(&spgw_config.pgw_config.pgw_lite_ipv6_pool_list, ipv6_entries);
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free(conf_ipv6_p);
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}
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#endif
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}
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int pgw_lite_get_free_ipv4_paa_address(struct in_addr * const addr_pP) {
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struct pgw_lite_ipv4_list_elm_s *ipv4_p = NULL;
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if (STAILQ_EMPTY(&pgw_app.pgw_lite_ipv4_list_free)) {
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addr_pP->s_addr = INADDR_ANY;
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return -1;
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}
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ipv4_p = STAILQ_FIRST(&pgw_app.pgw_lite_ipv4_list_free);
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STAILQ_REMOVE(&pgw_app.pgw_lite_ipv4_list_free, ipv4_p, pgw_lite_ipv4_list_elm_s, ipv4_entries);
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STAILQ_INSERT_TAIL(&pgw_app.pgw_lite_ipv4_list_allocated, ipv4_p, ipv4_entries);
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addr_pP->s_addr = ipv4_p->addr.s_addr;
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return 0;
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}
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int pgw_lite_release_free_ipv4_paa_address(const struct in_addr * const addr_pP) {
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struct pgw_lite_ipv4_list_elm_s *ipv4_p = NULL;
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STAILQ_FOREACH(ipv4_p, &pgw_app.pgw_lite_ipv4_list_allocated, ipv4_entries) {
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if (ipv4_p->addr.s_addr == addr_pP->s_addr) {
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STAILQ_REMOVE(&pgw_app.pgw_lite_ipv4_list_allocated, ipv4_p, pgw_lite_ipv4_list_elm_s, ipv4_entries);
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STAILQ_INSERT_TAIL(&pgw_app.pgw_lite_ipv4_list_free, ipv4_p, ipv4_entries);
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return 0;
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}
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}
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return -1;
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}
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int pgw_lite_get_free_ipv6_paa_prefix(struct in6_addr * const addr_pP) {
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struct pgw_lite_ipv6_list_elm_s *ipv6_p = NULL;
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if (STAILQ_EMPTY(&pgw_app.pgw_lite_ipv6_list_free)) {
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*addr_pP = in6addr_any;
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return -1;
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}
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ipv6_p = STAILQ_FIRST(&pgw_app.pgw_lite_ipv6_list_free);
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ipv6_p->num_allocated += 1;
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ipv6_p->num_free -= 1;
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if (ipv6_p->num_free == 0) {
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STAILQ_REMOVE(&pgw_app.pgw_lite_ipv6_list_free, ipv6_p, pgw_lite_ipv6_list_elm_s, ipv6_entries);
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STAILQ_INSERT_TAIL(&pgw_app.pgw_lite_ipv6_list_allocated, ipv6_p, ipv6_entries);
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}
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*addr_pP = ipv6_p->addr;
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return 0;
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}
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int pgw_lite_release_free_ipv6_paa_prefix(const struct in6_addr * const addr_pP) {
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struct pgw_lite_ipv6_list_elm_s *ipv6_p = NULL;
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ipv6_p = STAILQ_FIRST(&pgw_app.pgw_lite_ipv6_list_free);
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if (IN6_ARE_ADDR_EQUAL(&ipv6_p->addr, addr_pP)) {
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ipv6_p->num_allocated -= 1;
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ipv6_p->num_free += 1;
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}
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STAILQ_FOREACH(ipv6_p, &pgw_app.pgw_lite_ipv6_list_allocated, ipv6_entries) {
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if (IN6_ARE_ADDR_EQUAL(&ipv6_p->addr, addr_pP)) {
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STAILQ_REMOVE(&pgw_app.pgw_lite_ipv6_list_allocated, ipv6_p, pgw_lite_ipv6_list_elm_s, ipv6_entries);
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ipv6_p->num_allocated -= 1;
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ipv6_p->num_free += 1;
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STAILQ_INSERT_TAIL(&pgw_app.pgw_lite_ipv6_list_free, ipv6_p, ipv6_entries);
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return 0;
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}
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}
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return -1;
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}
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