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Diffstat (limited to 'src/ipcpd/unicast/pol/link_state.c')
-rw-r--r--src/ipcpd/unicast/pol/link_state.c1055
1 files changed, 0 insertions, 1055 deletions
diff --git a/src/ipcpd/unicast/pol/link_state.c b/src/ipcpd/unicast/pol/link_state.c
deleted file mode 100644
index 08d39372..00000000
--- a/src/ipcpd/unicast/pol/link_state.c
+++ /dev/null
@@ -1,1055 +0,0 @@
-/*
- * Ouroboros - Copyright (C) 2016 - 2021
- *
- * Link state routing policy
- *
- * Dimitri Staessens <dimitri@ouroboros.rocks>
- * Sander Vrijders <sander@ouroboros.rocks>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., http://www.fsf.org/about/contact/.
- */
-
-#if defined(__linux__) || defined(__CYGWIN__)
-#define _DEFAULT_SOURCE
-#else
-#define _POSIX_C_SOURCE 200112L
-#endif
-
-#include "config.h"
-
-#define OUROBOROS_PREFIX "link-state-routing"
-
-#include <ouroboros/endian.h>
-#include <ouroboros/dev.h>
-#include <ouroboros/errno.h>
-#include <ouroboros/fccntl.h>
-#include <ouroboros/fqueue.h>
-#include <ouroboros/list.h>
-#include <ouroboros/logs.h>
-#include <ouroboros/notifier.h>
-#include <ouroboros/pthread.h>
-#include <ouroboros/rib.h>
-#include <ouroboros/utils.h>
-
-#include "common/comp.h"
-#include "common/connmgr.h"
-#include "graph.h"
-#include "ipcp.h"
-#include "link_state.h"
-#include "pff.h"
-
-#include <assert.h>
-#include <stdlib.h>
-#include <inttypes.h>
-#include <string.h>
-
-#define RECALC_TIME 4
-#define LS_UPDATE_TIME 15
-#define LS_TIMEO 60
-#define LS_ENTRY_SIZE 104
-#define LSDB "lsdb"
-
-#ifndef CLOCK_REALTIME_COARSE
-#define CLOCK_REALTIME_COARSE CLOCK_REALTIME
-#endif
-
-struct lsa {
- uint64_t d_addr;
- uint64_t s_addr;
- uint64_t seqno;
-} __attribute__((packed));
-
-struct routing_i {
- struct list_head next;
-
- struct pff * pff;
- pthread_t calculator;
-
- bool modified;
- pthread_mutex_t lock;
-};
-
-/* TODO: link weight support. */
-struct adjacency {
- struct list_head next;
-
- uint64_t dst;
- uint64_t src;
-
- uint64_t seqno;
-
- time_t stamp;
-};
-
-enum nb_type {
- NB_DT = 0,
- NB_MGMT
-};
-
-struct nb {
- struct list_head next;
-
- uint64_t addr;
- int fd;
- enum nb_type type;
-};
-
-struct {
- struct list_head nbs;
- size_t nbs_len;
- fset_t * mgmt_set;
-
- struct list_head db;
- size_t db_len;
-
- pthread_rwlock_t db_lock;
-
- struct graph * graph;
-
- pthread_t lsupdate;
- pthread_t lsreader;
- pthread_t listener;
-
- struct list_head routing_instances;
- pthread_mutex_t routing_i_lock;
-
- enum routing_algo routing_algo;
-} ls;
-
-struct pol_routing_ops link_state_ops = {
- .init = link_state_init,
- .fini = link_state_fini,
- .routing_i_create = link_state_routing_i_create,
- .routing_i_destroy = link_state_routing_i_destroy
-};
-
-static int str_adj(struct adjacency * adj,
- char * buf,
- size_t len)
-{
- char tmbuf[64];
- char srcbuf[64];
- char dstbuf[64];
- char seqnobuf[64];
- struct tm * tm;
-
- assert(adj);
-
- if (len < LS_ENTRY_SIZE)
- return -1;
-
- tm = localtime(&adj->stamp);
- strftime(tmbuf, sizeof(tmbuf), "%F %T", tm); /* 19 chars */
-
- sprintf(srcbuf, "%" PRIu64, adj->src);
- sprintf(dstbuf, "%" PRIu64, adj->dst);
- sprintf(seqnobuf, "%" PRIu64, adj->seqno);
-
- sprintf(buf, "src: %20s\ndst: %20s\nseqno: %18s\nupd: %20s\n",
- srcbuf, dstbuf, seqnobuf, tmbuf);
-
- return LS_ENTRY_SIZE;
-}
-
-static struct adjacency * get_adj(const char * path)
-{
- struct list_head * p;
- char entry[RIB_PATH_LEN + 1];
-
- assert(path);
-
- list_for_each(p, &ls.db) {
- struct adjacency * a = list_entry(p, struct adjacency, next);
- sprintf(entry, "%" PRIu64 ".%" PRIu64, a->src, a->dst);
- if (strcmp(entry, path) == 0)
- return a;
- }
-
- return NULL;
-}
-
-static int lsdb_rib_getattr(const char * path,
- struct rib_attr * attr)
-{
- struct adjacency * adj;
- struct timespec now;
- char * entry;
-
- assert(path);
- assert(attr);
-
- entry = strstr(path, RIB_SEPARATOR) + 1;
- assert(entry);
-
- clock_gettime(CLOCK_REALTIME_COARSE, &now);
-
- pthread_rwlock_rdlock(&ls.db_lock);
-
- adj = get_adj(entry);
- if (adj != NULL) {
- attr->mtime = adj->stamp;
- attr->size = LS_ENTRY_SIZE;
- } else {
- attr->mtime = now.tv_sec;
- attr->size = 0;
- }
-
- pthread_rwlock_unlock(&ls.db_lock);
-
- return 0;
-}
-
-static int lsdb_rib_read(const char * path,
- char * buf,
- size_t len)
-{
- struct adjacency * a;
- char * entry;
- int size;
-
- assert(path);
-
- entry = strstr(path, RIB_SEPARATOR) + 1;
- assert(entry);
-
- pthread_rwlock_rdlock(&ls.db_lock);
-
- if (ls.db_len + ls.nbs_len == 0)
- goto fail;
-
- a = get_adj(entry);
- if (a == NULL)
- goto fail;
-
- size = str_adj(a, buf, len);
- if (size < 0)
- goto fail;
-
- pthread_rwlock_unlock(&ls.db_lock);
- return size;
-
- fail:
- pthread_rwlock_unlock(&ls.db_lock);
- return -1;
-}
-
-static int lsdb_rib_readdir(char *** buf)
-{
- struct list_head * p;
- char entry[RIB_PATH_LEN + 1];
- ssize_t idx = 0;
-
- assert(buf);
-
- pthread_rwlock_rdlock(&ls.db_lock);
-
- if (ls.db_len + ls.nbs_len == 0) {
- pthread_rwlock_unlock(&ls.db_lock);
- return 0;
- }
-
- *buf = malloc(sizeof(**buf) * (ls.db_len + ls.nbs_len));
- if (*buf == NULL) {
- pthread_rwlock_unlock(&ls.db_lock);
- return -ENOMEM;
- }
-
- list_for_each(p, &ls.nbs) {
- struct nb * nb = list_entry(p, struct nb, next);
- char * str = (nb->type == NB_DT ? "dt." : "mgmt.");
- sprintf(entry, "%s%" PRIu64, str, nb->addr);
- (*buf)[idx] = malloc(strlen(entry) + 1);
- if ((*buf)[idx] == NULL) {
- while (idx-- > 0)
- free((*buf)[idx]);
- free(buf);
- pthread_rwlock_unlock(&ls.db_lock);
- return -ENOMEM;
- }
-
- strcpy((*buf)[idx], entry);
-
- idx++;
- }
-
- list_for_each(p, &ls.db) {
- struct adjacency * a = list_entry(p, struct adjacency, next);
- sprintf(entry, "%" PRIu64 ".%" PRIu64, a->src, a->dst);
- (*buf)[idx] = malloc(strlen(entry) + 1);
- if ((*buf)[idx] == NULL) {
- ssize_t j;
- for (j = 0; j < idx; ++j)
- free(*buf[j]);
- free(buf);
- pthread_rwlock_unlock(&ls.db_lock);
- return -ENOMEM;
- }
-
- strcpy((*buf)[idx], entry);
-
- idx++;
- }
-
- pthread_rwlock_unlock(&ls.db_lock);
-
- return idx;
-}
-
-static struct rib_ops r_ops = {
- .read = lsdb_rib_read,
- .readdir = lsdb_rib_readdir,
- .getattr = lsdb_rib_getattr
-};
-
-static int lsdb_add_nb(uint64_t addr,
- int fd,
- enum nb_type type)
-{
- struct list_head * p;
- struct nb * nb;
-
- pthread_rwlock_wrlock(&ls.db_lock);
-
- list_for_each(p, &ls.nbs) {
- struct nb * el = list_entry(p, struct nb, next);
- if (el->addr == addr && el->type == type) {
- log_dbg("Already know %s neighbor %" PRIu64 ".",
- type == NB_DT ? "dt" : "mgmt", addr);
- if (el->fd != fd) {
- log_warn("Existing neighbor assigned new fd.");
- el->fd = fd;
- }
- pthread_rwlock_unlock(&ls.db_lock);
- return -EPERM;
- }
-
- if (addr > el->addr)
- break;
- }
-
- nb = malloc(sizeof(*nb));
- if (nb == NULL) {
- pthread_rwlock_unlock(&ls.db_lock);
- return -ENOMEM;
- }
-
- nb->addr = addr;
- nb->fd = fd;
- nb->type = type;
-
- list_add_tail(&nb->next, p);
-
- ++ls.nbs_len;
-
- log_dbg("Type %s neighbor %" PRIu64 " added.",
- nb->type == NB_DT ? "dt" : "mgmt", addr);
-
- pthread_rwlock_unlock(&ls.db_lock);
-
- return 0;
-}
-
-static int lsdb_del_nb(uint64_t addr,
- int fd)
-{
- struct list_head * p;
- struct list_head * h;
-
- pthread_rwlock_wrlock(&ls.db_lock);
-
- list_for_each_safe(p, h, &ls.nbs) {
- struct nb * nb = list_entry(p, struct nb, next);
- if (nb->addr == addr && nb->fd == fd) {
- list_del(&nb->next);
- --ls.nbs_len;
- pthread_rwlock_unlock(&ls.db_lock);
- log_dbg("Type %s neighbor %" PRIu64 " deleted.",
- nb->type == NB_DT ? "dt" : "mgmt", addr);
- free(nb);
- return 0;
- }
- }
-
- pthread_rwlock_unlock(&ls.db_lock);
-
- return -EPERM;
-}
-
-static int nbr_to_fd(uint64_t addr)
-{
- struct list_head * p;
- int fd;
-
- pthread_rwlock_rdlock(&ls.db_lock);
-
- list_for_each(p, &ls.nbs) {
- struct nb * nb = list_entry(p, struct nb, next);
- if (nb->addr == addr && nb->type == NB_DT) {
- fd = nb->fd;
- pthread_rwlock_unlock(&ls.db_lock);
- return fd;
- }
- }
-
- pthread_rwlock_unlock(&ls.db_lock);
-
- return -1;
-}
-
-static void calculate_pff(struct routing_i * instance)
-{
- int fd;
- struct list_head table;
- struct list_head * p;
- struct list_head * q;
- int fds[PROG_MAX_FLOWS];
-
- assert(instance);
-
- if (graph_routing_table(ls.graph, ls.routing_algo,
- ipcpi.dt_addr, &table))
- return;
-
- pff_lock(instance->pff);
-
- pff_flush(instance->pff);
-
- /* Calculate forwarding table from routing table. */
- list_for_each(p, &table) {
- int i = 0;
- struct routing_table * t =
- list_entry(p, struct routing_table, next);
-
- list_for_each(q, &t->nhops) {
- struct nhop * n = list_entry(q, struct nhop, next);
-
- fd = nbr_to_fd(n->nhop);
- if (fd == -1)
- continue;
-
- fds[i++] = fd;
- }
- if (i > 0)
- pff_add(instance->pff, t->dst, fds, i);
- }
-
- pff_unlock(instance->pff);
-
- graph_free_routing_table(ls.graph, &table);
-}
-
-static void set_pff_modified(bool calc)
-{
- struct list_head * p;
-
- pthread_mutex_lock(&ls.routing_i_lock);
- list_for_each(p, &ls.routing_instances) {
- struct routing_i * inst =
- list_entry(p, struct routing_i, next);
- pthread_mutex_lock(&inst->lock);
- inst->modified = true;
- pthread_mutex_unlock(&inst->lock);
- if (calc)
- calculate_pff(inst);
- }
- pthread_mutex_unlock(&ls.routing_i_lock);
-}
-
-static int lsdb_add_link(uint64_t src,
- uint64_t dst,
- uint64_t seqno,
- qosspec_t * qs)
-{
- struct list_head * p;
- struct adjacency * adj;
- struct timespec now;
- int ret = -1;
-
- assert(qs);
-
- clock_gettime(CLOCK_REALTIME_COARSE, &now);
-
- pthread_rwlock_wrlock(&ls.db_lock);
-
- list_for_each(p, &ls.db) {
- struct adjacency * a = list_entry(p, struct adjacency, next);
- if (a->dst == dst && a->src == src) {
- if (a->seqno < seqno) {
- a->stamp = now.tv_sec;
- a->seqno = seqno;
- ret = 0;
- }
- pthread_rwlock_unlock(&ls.db_lock);
- return ret;
- }
-
- if (a->dst > dst || (a->dst == dst && a->src > src))
- break;
- }
-
- adj = malloc(sizeof(*adj));
- if (adj == NULL) {
- pthread_rwlock_unlock(&ls.db_lock);
- return -ENOMEM;
- }
-
- adj->dst = dst;
- adj->src = src;
- adj->seqno = seqno;
- adj->stamp = now.tv_sec;
-
- list_add_tail(&adj->next, p);
-
- ls.db_len++;
-
- if (graph_update_edge(ls.graph, src, dst, *qs))
- log_warn("Failed to add edge to graph.");
-
- pthread_rwlock_unlock(&ls.db_lock);
-
- set_pff_modified(true);
-
- return 0;
-}
-
-static int lsdb_del_link(uint64_t src,
- uint64_t dst)
-{
- struct list_head * p;
- struct list_head * h;
-
- pthread_rwlock_wrlock(&ls.db_lock);
-
- list_for_each_safe(p, h, &ls.db) {
- struct adjacency * a = list_entry(p, struct adjacency, next);
- if (a->dst == dst && a->src == src) {
- list_del(&a->next);
- if (graph_del_edge(ls.graph, src, dst))
- log_warn("Failed to delete edge from graph.");
-
- ls.db_len--;
-
- pthread_rwlock_unlock(&ls.db_lock);
- set_pff_modified(false);
- free(a);
- return 0;
- }
- }
-
- pthread_rwlock_unlock(&ls.db_lock);
-
- return -EPERM;
-}
-
-static void * periodic_recalc_pff(void * o)
-{
- bool modified;
- struct routing_i * inst;
-
- assert(o);
-
- inst = (struct routing_i *) o;
-
- while (true) {
- pthread_mutex_lock(&inst->lock);
- modified = inst->modified;
- inst->modified = false;
- pthread_mutex_unlock(&inst->lock);
-
- if (modified)
- calculate_pff(inst);
-
- sleep(RECALC_TIME);
- }
-
- return (void *) 0;
-}
-
-static void send_lsm(uint64_t src,
- uint64_t dst,
- uint64_t seqno)
-{
- struct lsa lsm;
- struct list_head * p;
-
- lsm.d_addr = hton64(dst);
- lsm.s_addr = hton64(src);
- lsm.seqno = hton64(seqno);
-
- list_for_each(p, &ls.nbs) {
- struct nb * nb = list_entry(p, struct nb, next);
- if (nb->type == NB_MGMT)
- flow_write(nb->fd, &lsm, sizeof(lsm));
- }
-}
-
-/* replicate the lsdb to a mgmt neighbor */
-static void lsdb_replicate(int fd)
-{
- struct list_head * p;
- struct list_head * h;
- struct list_head copy;
-
- list_head_init(&copy);
-
- /* Lock the lsdb, copy the lsms and send outside of lock. */
- pthread_rwlock_rdlock(&ls.db_lock);
-
- list_for_each(p, &ls.db) {
- struct adjacency * adj;
- struct adjacency * cpy;
- adj = list_entry(p, struct adjacency, next);
- cpy = malloc(sizeof(*cpy));
- if (cpy == NULL) {
- log_warn("Failed to replicate full lsdb.");
- break;
- }
-
- cpy->dst = adj->dst;
- cpy->src = adj->src;
- cpy->seqno = adj->seqno;
-
- list_add_tail(&cpy->next, &copy);
- }
-
- pthread_rwlock_unlock(&ls.db_lock);
-
- list_for_each_safe(p, h, &copy) {
- struct lsa lsm;
- struct adjacency * adj;
- adj = list_entry(p, struct adjacency, next);
- lsm.d_addr = hton64(adj->dst);
- lsm.s_addr = hton64(adj->src);
- lsm.seqno = hton64(adj->seqno);
- list_del(&adj->next);
- free(adj);
- flow_write(fd, &lsm, sizeof(lsm));
- }
-}
-
-static void * lsupdate(void * o)
-{
- struct list_head * p;
- struct list_head * h;
- struct timespec now;
-
- (void) o;
-
- while (true) {
- clock_gettime(CLOCK_REALTIME_COARSE, &now);
-
- pthread_rwlock_wrlock(&ls.db_lock);
-
- pthread_cleanup_push(__cleanup_rwlock_unlock, &ls.db_lock);
-
- list_for_each_safe(p, h, &ls.db) {
- struct adjacency * adj;
- adj = list_entry(p, struct adjacency, next);
- if (now.tv_sec - adj->stamp > LS_TIMEO) {
- list_del(&adj->next);
- log_dbg("%" PRIu64 " - %" PRIu64" timed out.",
- adj->src, adj->dst);
- if (graph_del_edge(ls.graph, adj->src,
- adj->dst))
- log_err("Failed to del edge.");
- free(adj);
- continue;
- }
-
- if (adj->src == ipcpi.dt_addr) {
- adj->seqno++;
- send_lsm(adj->src, adj->dst, adj->seqno);
- adj->stamp = now.tv_sec;
- }
- }
-
- pthread_cleanup_pop(true);
-
- sleep(LS_UPDATE_TIME);
- }
-
- return (void *) 0;
-}
-
-static void * ls_conn_handle(void * o)
-{
- struct conn conn;
-
- (void) o;
-
- while (true) {
- if (connmgr_wait(COMPID_MGMT, &conn)) {
- log_err("Failed to get next MGMT connection.");
- continue;
- }
-
- /* NOTE: connection acceptance policy could be here. */
-
- notifier_event(NOTIFY_MGMT_CONN_ADD, &conn);
- }
-
- return 0;
-}
-
-
-static void forward_lsm(uint8_t * buf,
- size_t len,
- int in_fd)
-{
- struct list_head * p;
-
- pthread_rwlock_rdlock(&ls.db_lock);
-
- pthread_cleanup_push(__cleanup_rwlock_unlock, &ls.db_lock);
-
- list_for_each(p, &ls.nbs) {
- struct nb * nb = list_entry(p, struct nb, next);
- if (nb->type == NB_MGMT && nb->fd != in_fd)
- flow_write(nb->fd, buf, len);
- }
-
- pthread_cleanup_pop(true);
-}
-
-static void cleanup_fqueue(void * fq)
-{
- fqueue_destroy((fqueue_t *) fq);
-}
-
-static void * lsreader(void * o)
-{
- fqueue_t * fq;
- int ret;
- uint8_t buf[sizeof(struct lsa)];
- int fd;
- qosspec_t qs;
- struct lsa * msg;
- size_t len;
-
- (void) o;
-
- memset(&qs, 0, sizeof(qs));
-
- fq = fqueue_create();
- if (fq == NULL)
- return (void *) -1;
-
- pthread_cleanup_push(cleanup_fqueue, fq);
-
- while (true) {
- ret = fevent(ls.mgmt_set, fq, NULL);
- if (ret < 0) {
- log_warn("Event error: %d.", ret);
- continue;
- }
-
- while ((fd = fqueue_next(fq)) >= 0) {
- if (fqueue_type(fq) != FLOW_PKT)
- continue;
-
- len = flow_read(fd, buf, sizeof(*msg));
- if (len <= 0 || len != sizeof(*msg))
- continue;
-
- msg = (struct lsa *) buf;
-
- if (lsdb_add_link(ntoh64(msg->s_addr),
- ntoh64(msg->d_addr),
- ntoh64(msg->seqno),
- &qs))
- continue;
-
- forward_lsm(buf, len, fd);
- }
- }
-
- pthread_cleanup_pop(true);
-
- return (void *) 0;
-}
-
-static void flow_event(int fd,
- bool up)
-{
-
- struct list_head * p;
-
- log_dbg("Notifying routing instances of flow event.");
-
- pthread_mutex_lock(&ls.routing_i_lock);
-
- list_for_each(p, &ls.routing_instances) {
- struct routing_i * ri = list_entry(p, struct routing_i, next);
- pff_flow_state_change(ri->pff, fd, up);
- }
-
- pthread_mutex_unlock(&ls.routing_i_lock);
-}
-
-static void handle_event(void * self,
- int event,
- const void * o)
-{
- /* FIXME: Apply correct QoS on graph */
- struct conn * c;
- qosspec_t qs;
- int flags;
-
- (void) self;
-
- assert(o);
-
- c = (struct conn *) o;
-
- memset(&qs, 0, sizeof(qs));
-
- switch (event) {
- case NOTIFY_DT_CONN_ADD:
- pthread_rwlock_rdlock(&ls.db_lock);
-
- pthread_cleanup_push(__cleanup_rwlock_unlock, &ls.db_lock);
-
- send_lsm(ipcpi.dt_addr, c->conn_info.addr, 0);
- pthread_cleanup_pop(true);
-
- if (lsdb_add_nb(c->conn_info.addr, c->flow_info.fd, NB_DT))
- log_dbg("Failed to add neighbor to LSDB.");
-
- if (lsdb_add_link(ipcpi.dt_addr, c->conn_info.addr, 0, &qs))
- log_dbg("Failed to add new adjacency to LSDB.");
- break;
- case NOTIFY_DT_CONN_DEL:
- flow_event(c->flow_info.fd, false);
-
- if (lsdb_del_nb(c->conn_info.addr, c->flow_info.fd))
- log_dbg("Failed to delete neighbor from LSDB.");
-
- if (lsdb_del_link(ipcpi.dt_addr, c->conn_info.addr))
- log_dbg("Local link was not in LSDB.");
- break;
- case NOTIFY_DT_CONN_QOS:
- log_dbg("QoS changes currently unsupported.");
- break;
- case NOTIFY_DT_CONN_UP:
- flow_event(c->flow_info.fd, true);
- break;
- case NOTIFY_DT_CONN_DOWN:
- flow_event(c->flow_info.fd, false);
- break;
- case NOTIFY_MGMT_CONN_ADD:
- fccntl(c->flow_info.fd, FLOWGFLAGS, &flags);
- fccntl(c->flow_info.fd, FLOWSFLAGS, flags | FLOWFRNOPART);
- fset_add(ls.mgmt_set, c->flow_info.fd);
- if (lsdb_add_nb(c->conn_info.addr, c->flow_info.fd, NB_MGMT))
- log_warn("Failed to add mgmt neighbor to LSDB.");
- /* replicate the entire lsdb */
- lsdb_replicate(c->flow_info.fd);
- break;
- case NOTIFY_MGMT_CONN_DEL:
- fset_del(ls.mgmt_set, c->flow_info.fd);
- if (lsdb_del_nb(c->conn_info.addr, c->flow_info.fd))
- log_warn("Failed to delete mgmt neighbor from LSDB.");
- break;
- default:
- break;
- }
-}
-
-struct routing_i * link_state_routing_i_create(struct pff * pff)
-{
- struct routing_i * tmp;
-
- assert(pff);
-
- tmp = malloc(sizeof(*tmp));
- if (tmp == NULL)
- goto fail_tmp;
-
- tmp->pff = pff;
- tmp->modified = false;
-
- if (pthread_mutex_init(&tmp->lock, NULL))
- goto fail_instance_lock_init;
-
- if (pthread_create(&tmp->calculator, NULL,
- periodic_recalc_pff, tmp))
- goto fail_pthread_create_lsupdate;
-
- pthread_mutex_lock(&ls.routing_i_lock);
-
- list_add(&tmp->next, &ls.routing_instances);
-
- pthread_mutex_unlock(&ls.routing_i_lock);
-
- return tmp;
-
- fail_pthread_create_lsupdate:
- pthread_mutex_destroy(&tmp->lock);
- fail_instance_lock_init:
- free(tmp);
- fail_tmp:
- return NULL;
-}
-
-void link_state_routing_i_destroy(struct routing_i * instance)
-{
- assert(instance);
-
- pthread_mutex_lock(&ls.routing_i_lock);
-
- list_del(&instance->next);
-
- pthread_mutex_unlock(&ls.routing_i_lock);
-
- pthread_cancel(instance->calculator);
-
- pthread_join(instance->calculator, NULL);
-
- pthread_mutex_destroy(&instance->lock);
-
- free(instance);
-}
-
-int link_state_init(enum pol_routing pr)
-{
- struct conn_info info;
-
- memset(&info, 0, sizeof(info));
-
- strcpy(info.comp_name, LS_COMP);
- strcpy(info.protocol, LS_PROTO);
- info.pref_version = 1;
- info.pref_syntax = PROTO_GPB;
- info.addr = ipcpi.dt_addr;
-
- switch (pr) {
- case ROUTING_LINK_STATE:
- log_dbg("Using link state routing policy.");
- ls.routing_algo = ROUTING_SIMPLE;
- break;
- case ROUTING_LINK_STATE_LFA:
- log_dbg("Using Loop-Free Alternates policy.");
- ls.routing_algo = ROUTING_LFA;
- break;
- case ROUTING_LINK_STATE_ECMP:
- log_dbg("Using Equal-Cost Multipath policy.");
- ls.routing_algo = ROUTING_ECMP;
- break;
- default:
- goto fail_graph;
- }
-
- ls.graph = graph_create();
- if (ls.graph == NULL)
- goto fail_graph;
-
- if (notifier_reg(handle_event, NULL))
- goto fail_notifier_reg;
-
- if (pthread_rwlock_init(&ls.db_lock, NULL))
- goto fail_db_lock_init;
-
- if (pthread_mutex_init(&ls.routing_i_lock, NULL))
- goto fail_routing_i_lock_init;
-
- if (connmgr_comp_init(COMPID_MGMT, &info))
- goto fail_connmgr_comp_init;
-
- ls.mgmt_set = fset_create();
- if (ls.mgmt_set == NULL)
- goto fail_fset_create;
-
- list_head_init(&ls.db);
- list_head_init(&ls.nbs);
- list_head_init(&ls.routing_instances);
-
- if (pthread_create(&ls.lsupdate, NULL, lsupdate, NULL))
- goto fail_pthread_create_lsupdate;
-
- if (pthread_create(&ls.lsreader, NULL, lsreader, NULL))
- goto fail_pthread_create_lsreader;
-
- if (pthread_create(&ls.listener, NULL, ls_conn_handle, NULL))
- goto fail_pthread_create_listener;
-
- if (rib_reg(LSDB, &r_ops))
- goto fail_rib_reg;
-
- ls.db_len = 0;
- ls.nbs_len = 0;
-
- return 0;
-
- fail_rib_reg:
- pthread_cancel(ls.listener);
- pthread_join(ls.listener, NULL);
- fail_pthread_create_listener:
- pthread_cancel(ls.lsreader);
- pthread_join(ls.lsreader, NULL);
- fail_pthread_create_lsreader:
- pthread_cancel(ls.lsupdate);
- pthread_join(ls.lsupdate, NULL);
- fail_pthread_create_lsupdate:
- fset_destroy(ls.mgmt_set);
- fail_fset_create:
- connmgr_comp_fini(COMPID_MGMT);
- fail_connmgr_comp_init:
- pthread_mutex_destroy(&ls.routing_i_lock);
- fail_routing_i_lock_init:
- pthread_rwlock_destroy(&ls.db_lock);
- fail_db_lock_init:
- notifier_unreg(handle_event);
- fail_notifier_reg:
- graph_destroy(ls.graph);
- fail_graph:
- return -1;
-}
-
-void link_state_fini(void)
-{
- struct list_head * p;
- struct list_head * h;
-
- rib_unreg(LSDB);
-
- notifier_unreg(handle_event);
-
- pthread_cancel(ls.listener);
- pthread_cancel(ls.lsreader);
- pthread_cancel(ls.lsupdate);
-
- pthread_join(ls.listener, NULL);
- pthread_join(ls.lsreader, NULL);
- pthread_join(ls.lsupdate, NULL);
-
- fset_destroy(ls.mgmt_set);
-
- connmgr_comp_fini(COMPID_MGMT);
-
- graph_destroy(ls.graph);
-
- pthread_rwlock_wrlock(&ls.db_lock);
-
- list_for_each_safe(p, h, &ls.db) {
- struct adjacency * a = list_entry(p, struct adjacency, next);
- list_del(&a->next);
- free(a);
- }
-
- pthread_rwlock_unlock(&ls.db_lock);
-
- pthread_rwlock_destroy(&ls.db_lock);
-
- pthread_mutex_destroy(&ls.routing_i_lock);
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-07 06:24:24 +0000