ipcpd: Revise internals of normal IPCP

This removes the RIB as a datastructure and CDAP as the protocol
between IPCPs. CDAP, the rib and related sources are deprecated. The
link-state protocol policy is udpated to use its own protocol based on
a simple broadcast strategy along a tree. The neighbors struct is
deprecated and moved to the library as a generic notifier component.

24 files changed, 569 insertions, 1167 deletions

diff --git a/src/ipcpd/normal/CMakeLists.txt b/src/ipcpd/normal/CMakeLists.txt
index aebc6c35..e5fc33da 100644
--- a/src/ipcpd/normal/CMakeLists.txt
+++ b/src/ipcpd/normal/CMakeLists.txt
@@ -20,7 +20,7 @@ protobuf_generate_c(ENROLL_PROTO_SRCS ENROLL_PROTO_HDRS enroll.proto
 protobuf_generate_c(KAD_PROTO_SRCS KAD_PROTO_HDRS kademlia.proto)
 
 # Add GPB sources of policies last
-protobuf_generate_c(FSO_SRCS FSO_HDRS pol/fso.proto)
+protobuf_generate_c(LS_PROTO_SRCS LS_PROTO_HDRS pol/link_state.proto)
 
 math(EXPR PFT_EXPR "1 << 12")
 set(PFT_SIZE ${PFT_EXPR} CACHE STRING
@@ -37,9 +37,7 @@ set(SOURCE_FILES
   enroll.c
   fa.c
   main.c
-  neighbors.c
   pff.c
-  ribmgr.c
   routing.c
   sdu_sched.c
   # Add policies last
@@ -49,7 +47,7 @@ set(SOURCE_FILES
   )
 
 add_executable(ipcpd-normal ${SOURCE_FILES} ${IPCP_SOURCES}
-  ${FLOW_ALLOC_SRCS} ${FSO_SRCS} ${KAD_PROTO_SRCS} ${ENROLL_PROTO_SRCS})
+  ${FLOW_ALLOC_SRCS} ${LS_PROTO_SRCS} ${KAD_PROTO_SRCS} ${ENROLL_PROTO_SRCS})
 target_link_libraries(ipcpd-normal LINK_PUBLIC ouroboros)
 
 include(AddCompileFlags)
diff --git a/src/ipcpd/normal/connmgr.c b/src/ipcpd/normal/connmgr.c
index 9feac0f6..8d3da709 100644
--- a/src/ipcpd/normal/connmgr.c
+++ b/src/ipcpd/normal/connmgr.c
@@ -26,16 +26,15 @@
 
 #include <ouroboros/dev.h>
 #include <ouroboros/cacep.h>
-#include <ouroboros/cdap.h>
 #include <ouroboros/errno.h>
 #include <ouroboros/list.h>
 #include <ouroboros/logs.h>
+#include <ouroboros/notifier.h>
 
 #include "ae.h"
 #include "connmgr.h"
 #include "enroll.h"
 #include "ipcp.h"
-#include "ribmgr.h"
 
 #include <pthread.h>
 #include <string.h>
@@ -198,8 +197,7 @@ void connmgr_stop(void)
 }
 
 int connmgr_ae_init(enum ae_id               id,
-                    const struct conn_info * info,
-                    struct nbs *             nbs)
+                    const struct conn_info * info)
 {
         struct ae * ae;
 
@@ -220,8 +218,6 @@ int connmgr_ae_init(enum ae_id               id,
 
         memcpy(&connmgr.aes[id].info, info, sizeof(connmgr.aes[id].info));
 
-        connmgr.aes[id].nbs = nbs;
-
         return 0;
 }
 
@@ -258,8 +254,6 @@ void connmgr_ae_fini(enum ae_id id)
         pthread_mutex_destroy(&ae->lock);
 
         memset(&connmgr.aes[id].info, 0, sizeof(connmgr.aes[id].info));
-
-        connmgr.aes[id].nbs = NULL;
 }
 
 int connmgr_ipcp_connect(const char * dst,
@@ -394,8 +388,16 @@ int connmgr_alloc(enum ae_id    id,
                 return -1;
         }
 
-        if (connmgr.aes[id].nbs != NULL)
-                nbs_add(connmgr.aes[id].nbs, *conn);
+        switch (id) {
+        case AEID_DT:
+                notifier_event(NOTIFY_DT_CONN_ADD, conn);
+                break;
+        case AEID_MGMT:
+                notifier_event(NOTIFY_MGMT_CONN_ADD, conn);
+                break;
+        default:
+                break;
+        }
 
         return 0;
 }
@@ -403,8 +405,16 @@ int connmgr_alloc(enum ae_id    id,
 int connmgr_dealloc(enum ae_id    id,
                     struct conn * conn)
 {
-        if (connmgr.aes[id].nbs != NULL)
-                nbs_del(connmgr.aes[id].nbs, conn->flow_info.fd);
+        switch (id) {
+        case AEID_DT:
+                notifier_event(NOTIFY_DT_CONN_DEL, conn);
+                break;
+        case AEID_MGMT:
+                notifier_event(NOTIFY_MGMT_CONN_DEL, conn);
+                break;
+        default:
+                break;
+        }
 
         return flow_dealloc(conn->flow_info.fd);
 }
diff --git a/src/ipcpd/normal/connmgr.h b/src/ipcpd/normal/connmgr.h
index 379877e6..ca5288ae 100644
--- a/src/ipcpd/normal/connmgr.h
+++ b/src/ipcpd/normal/connmgr.h
@@ -27,7 +27,13 @@
 #include <ouroboros/qos.h>
 
 #include "ae.h"
-#include "neighbors.h"
+
+#define NOTIFY_DT_CONN_ADD   0x00D0
+#define NOTIFY_DT_CONN_DEL   0x00D1
+#define NOTIFY_DT_CONN_QOS   0x00D2
+
+#define NOTIFY_MGMT_CONN_ADD 0x00F0
+#define NOTIFY_MGMT_CONN_DEL 0x00F1
 
 int         connmgr_init(void);
 
@@ -38,8 +44,7 @@ int         connmgr_start(void);
 void        connmgr_stop(void);
 
 int         connmgr_ae_init(enum ae_id               id,
-                            const struct conn_info * info,
-                            struct nbs *             nbs);
+                            const struct conn_info * info);
 
 void        connmgr_ae_fini(enum ae_id id);
 
diff --git a/src/ipcpd/normal/dht.c b/src/ipcpd/normal/dht.c
index d139cb91..b1ba44a8 100644
--- a/src/ipcpd/normal/dht.c
+++ b/src/ipcpd/normal/dht.c
@@ -328,9 +328,6 @@ static void kad_req_destroy(struct kad_req * req)
 {
         assert(req);
 
-        if (req->key != NULL)
-                free(req->key);
-
         pthread_mutex_lock(&req->lock);
 
         switch (req->state) {
@@ -351,7 +348,7 @@ static void kad_req_destroy(struct kad_req * req)
                 break;
         }
 
-        while (req->state != REQ_NULL)
+        while (req->state != REQ_NULL && req->state != REQ_DONE)
                 pthread_cond_wait(&req->cond, &req->lock);
 
         pthread_mutex_unlock(&req->lock);
@@ -359,6 +356,9 @@ static void kad_req_destroy(struct kad_req * req)
         pthread_cond_destroy(&req->cond);
         pthread_mutex_destroy(&req->lock);
 
+        if (req->key != NULL)
+                free(req->key);
+
         free(req);
 }
 
@@ -391,7 +391,7 @@ static int kad_req_wait(struct kad_req * req,
         case REQ_PENDING: /* ETIMEDOUT */
         case REQ_RESPONSE:
                 req->state = REQ_DONE;
-                pthread_cond_signal(&req->cond);
+                pthread_cond_broadcast(&req->cond);
                 break;
         default:
                 break;
@@ -1859,7 +1859,7 @@ static void * work(void * o)
                                 if (now.tv_sec > v->t_exp) {
                                         list_del(&v->next);
                                         val_destroy(v);
-                                 }
+                                }
 
                                 if (now.tv_sec > v->t_rep) {
                                         kad_publish(dht, e->key, v->addr,
@@ -2018,7 +2018,7 @@ static void kad_handle_response(struct dht * dht,
         case KAD_FIND_VALUE:
         case KAD_FIND_NODE:
                 if (dht_get_state(dht) != DHT_RUNNING)
-                        return;
+                        break;
                 kad_handle_find_resp(dht, req, msg);
                 break;
         default:
diff --git a/src/ipcpd/normal/dir.c b/src/ipcpd/normal/dir.c
index d2cda4f9..6d04c66a 100644
--- a/src/ipcpd/normal/dir.c
+++ b/src/ipcpd/normal/dir.c
@@ -27,13 +27,11 @@
 #include <ouroboros/endian.h>
 #include <ouroboros/errno.h>
 #include <ouroboros/logs.h>
-#include <ouroboros/rib.h>
 #include <ouroboros/utils.h>
 
 #include "dir.h"
 #include "dht.h"
 #include "ipcp.h"
-#include "ribconfig.h"
 
 #include <stdlib.h>
 #include <string.h>
diff --git a/src/ipcpd/normal/dt.c b/src/ipcpd/normal/dt.c
index 282f6bee..2df17163 100644
--- a/src/ipcpd/normal/dt.c
+++ b/src/ipcpd/normal/dt.c
@@ -29,19 +29,17 @@
 #include <ouroboros/bitmap.h>
 #include <ouroboros/errno.h>
 #include <ouroboros/logs.h>
-#include <ouroboros/rib.h>
 #include <ouroboros/dev.h>
+#include <ouroboros/notifier.h>
 
 #include "connmgr.h"
 #include "ipcp.h"
 #include "dt.h"
 #include "dt_pci.h"
 #include "pff.h"
-#include "neighbors.h"
 #include "routing.h"
 #include "sdu_sched.h"
 #include "ae.h"
-#include "ribconfig.h"
 #include "fa.h"
 
 #include <stdlib.h>
@@ -66,36 +64,33 @@ struct {
         struct ae_info     aes[AP_RES_FDS];
         pthread_rwlock_t   lock;
 
-        struct nbs *       nbs;
-
-        struct nb_notifier nb_notifier;
-
         pthread_t          listener;
 } dt;
 
-static int dt_neighbor_event(enum nb_event event,
-                             struct conn   conn)
+static void handle_event(int          event,
+                         const void * o)
 {
-        /* We are only interested in neighbors being added and removed. */
+        struct conn * c;
+
+        c = (struct conn *) o;
+
         switch (event) {
-        case NEIGHBOR_ADDED:
-                sdu_sched_add(dt.sdu_sched, conn.flow_info.fd);
-                log_dbg("Added fd %d to SDU scheduler.", conn.flow_info.fd);
+        case NOTIFY_DT_CONN_ADD:
+                sdu_sched_add(dt.sdu_sched, c->flow_info.fd);
+                log_dbg("Added fd %d to SDU scheduler.", c->flow_info.fd);
                 break;
-        case NEIGHBOR_REMOVED:
-                sdu_sched_del(dt.sdu_sched, conn.flow_info.fd);
-                log_dbg("Removed fd %d from SDU scheduler.", conn.flow_info.fd);
+        case NOTIFY_DT_CONN_DEL:
+                sdu_sched_del(dt.sdu_sched, c->flow_info.fd);
+                log_dbg("Removed fd %d from SDU scheduler.", c->flow_info.fd);
                 break;
         default:
                 break;
         }
-
-        return 0;
 }
 
-static int sdu_handler(int                  fd,
-                       qoscube_t            qc,
-                       struct shm_du_buff * sdb)
+static void sdu_handler(int                  fd,
+                        qoscube_t            qc,
+                        struct shm_du_buff * sdb)
 {
         struct dt_pci dt_pci;
 
@@ -107,45 +102,38 @@ static int sdu_handler(int                  fd,
                 if (dt_pci.ttl == 0) {
                         log_dbg("TTL was zero.");
                         ipcp_sdb_release(sdb);
-                        return 0;
+                        return;
                 }
 
                 fd = pff_nhop(dt.pff[qc], dt_pci.dst_addr);
                 if (fd < 0) {
                         log_err("No next hop for %" PRIu64, dt_pci.dst_addr);
                         ipcp_sdb_release(sdb);
-                        return -1;
+                        return;
                 }
 
                 if (ipcp_flow_write(fd, sdb)) {
                         log_err("Failed to write SDU to fd %d.", fd);
                         ipcp_sdb_release(sdb);
-                        return -1;
+                        return;
                 }
         } else {
                 dt_pci_shrink(sdb);
 
                 if (dt_pci.fd > AP_RES_FDS) {
-                        if (ipcp_flow_write(dt_pci.fd, sdb)) {
+                        if (ipcp_flow_write(dt_pci.fd, sdb))
                                 ipcp_sdb_release(sdb);
-                                return -1;
-                        }
-                        return 0;
+                        return;
                 }
 
                 if (dt.aes[dt_pci.fd].post_sdu == NULL) {
                         log_err("No registered AE on fd %d.", dt_pci.fd);
                         ipcp_sdb_release(sdb);
-                        return -EPERM;
+                        return;
                 }
 
                 dt.aes[dt_pci.fd].post_sdu(dt.aes[dt_pci.fd].ae, sdb);
-
-                return 0;
         }
-
-        /* silence compiler */
-        return 0;
 }
 
 static void * dt_conn_handle(void * o)
@@ -160,11 +148,9 @@ static void * dt_conn_handle(void * o)
                         continue;
                 }
 
-                log_dbg("Got new connection.");
-
                 /* NOTE: connection acceptance policy could be here. */
 
-                nbs_add(dt.nbs, conn);
+                notifier_event(NOTIFY_DT_CONN_ADD, &conn);
         }
 
         return 0;
@@ -192,24 +178,17 @@ int dt_init(enum pol_routing pr,
                 goto fail_pci_init;
         }
 
-        dt.nbs = nbs_create();
-        if (dt.nbs == NULL) {
-                log_err("Failed to create neighbors struct.");
-                goto fail_nbs;
+        if (notifier_reg(handle_event)) {
+                log_err("Failed to register with notifier.");
+                goto fail_notifier_reg;
         }
 
-        dt.nb_notifier.notify_call = dt_neighbor_event;
-        if (nbs_reg_notifier(dt.nbs, &dt.nb_notifier)) {
-                log_err("Failed to register notifier.");
-                goto fail_nbs_notifier;
-        }
-
-        if (connmgr_ae_init(AEID_DT, &info, dt.nbs)) {
+        if (connmgr_ae_init(AEID_DT, &info)) {
                 log_err("Failed to register with connmgr.");
                 goto fail_connmgr_ae_init;
         }
 
-        if (routing_init(pr, dt.nbs)) {
+        if (routing_init(pr)) {
                 log_err("Failed to init routing.");
                 goto fail_routing;
         }
@@ -249,20 +228,17 @@ int dt_init(enum pol_routing pr,
         for (j = 0; j < QOS_CUBE_MAX; ++j)
                 routing_i_destroy(dt.routing[j]);
  fail_routing_i:
-        connmgr_ae_fini(AEID_DT);
- fail_connmgr_ae_init:
         for (i = 0; i < QOS_CUBE_MAX; ++i)
                 pff_destroy(dt.pff[i]);
  fail_pff:
         routing_fini();
  fail_routing:
-        nbs_unreg_notifier(dt.nbs, &dt.nb_notifier);
- fail_nbs_notifier:
-        nbs_destroy(dt.nbs);
- fail_nbs:
+        connmgr_ae_fini(AEID_DT);
+ fail_connmgr_ae_init:
+        notifier_unreg(&handle_event);
+ fail_notifier_reg:
         dt_pci_fini();
  fail_pci_init:
-        connmgr_ae_fini(AEID_DT);
         return -1;
 }
 
@@ -282,11 +258,11 @@ void dt_fini(void)
 
         routing_fini();
 
-        nbs_unreg_notifier(dt.nbs, &dt.nb_notifier);
+        connmgr_ae_fini(AEID_DT);
 
-        nbs_destroy(dt.nbs);
+        notifier_unreg(&handle_event);
 
-        connmgr_ae_fini(AEID_DT);
+        dt_pci_fini();
 }
 
 int dt_start(void)
diff --git a/src/ipcpd/normal/dt_pci.c b/src/ipcpd/normal/dt_pci.c
index 5704a09a..4684265d 100644
--- a/src/ipcpd/normal/dt_pci.c
+++ b/src/ipcpd/normal/dt_pci.c
@@ -21,10 +21,8 @@
  */
 
 #include <ouroboros/errno.h>
-#include <ouroboros/rib.h>
 
 #include "dt_pci.h"
-#include "ribconfig.h"
 
 #include <stdlib.h>
 #include <string.h>
diff --git a/src/ipcpd/normal/enroll.c b/src/ipcpd/normal/enroll.c
index ad229f40..d14c62ac 100644
--- a/src/ipcpd/normal/enroll.c
+++ b/src/ipcpd/normal/enroll.c
@@ -29,14 +29,12 @@
 #include <ouroboros/time_utils.h>
 #include <ouroboros/dev.h>
 #include <ouroboros/logs.h>
-#include <ouroboros/rib.h>
 #include <ouroboros/errno.h>
 #include <ouroboros/sockets.h>
 
 #include "connmgr.h"
 #include "enroll.h"
 #include "ipcp.h"
-#include "ribconfig.h"
 
 #include <assert.h>
 #include <stdlib.h>
@@ -270,6 +268,8 @@ static void * enroll_handle(void * o)
                 else
                         log_dbg("Neigbor reported failed enrollment.");
 
+                enroll_msg__free_unpacked(msg, NULL);
+
                 connmgr_dealloc(AEID_ENROLL, &conn);
         }
 
@@ -339,7 +339,7 @@ int enroll_init(void)
         info.pref_syntax  = PROTO_GPB;
         info.addr         = 0;
 
-        if (connmgr_ae_init(AEID_ENROLL, &info, NULL)) {
+        if (connmgr_ae_init(AEID_ENROLL, &info)) {
                 log_err("Failed to register with connmgr.");
                 return -1;
         }
diff --git a/src/ipcpd/normal/fa.c b/src/ipcpd/normal/fa.c
index 682dc5c6..e684abd2 100644
--- a/src/ipcpd/normal/fa.c
+++ b/src/ipcpd/normal/fa.c
@@ -28,7 +28,6 @@
 
 #include <ouroboros/logs.h>
 #include <ouroboros/fqueue.h>
-#include <ouroboros/rib.h>
 #include <ouroboros/errno.h>
 #include <ouroboros/dev.h>
 #include <ouroboros/ipcp-dev.h>
@@ -38,7 +37,6 @@
 #include "fa.h"
 #include "sdu_sched.h"
 #include "ipcp.h"
-#include "ribconfig.h"
 #include "dt.h"
 
 #include <pthread.h>
@@ -59,9 +57,9 @@ struct {
         struct sdu_sched * sdu_sched;
 } fa;
 
-static int sdu_handler(int                  fd,
-                       qoscube_t            qc,
-                       struct shm_du_buff * sdb)
+static void sdu_handler(int                  fd,
+                        qoscube_t            qc,
+                        struct shm_du_buff * sdb)
 {
         pthread_rwlock_rdlock(&fa.flows_lock);
 
@@ -69,12 +67,10 @@ static int sdu_handler(int                  fd,
                 pthread_rwlock_unlock(&fa.flows_lock);
                 ipcp_sdb_release(sdb);
                 log_warn("Failed to forward SDU.");
-                return -1;
+                return;
         }
 
         pthread_rwlock_unlock(&fa.flows_lock);
-
-        return 0;
 }
 
 static void destroy_conn(int fd)
diff --git a/src/ipcpd/normal/main.c b/src/ipcpd/normal/main.c
index 22b6e718..2b35a04a 100644
--- a/src/ipcpd/normal/main.c
+++ b/src/ipcpd/normal/main.c
@@ -31,9 +31,9 @@
 #include <ouroboros/ipcp-dev.h>
 #include <ouroboros/time_utils.h>
 #include <ouroboros/irm.h>
-#include <ouroboros/rib.h>
 #include <ouroboros/hash.h>
 #include <ouroboros/errno.h>
+#include <ouroboros/notifier.h>
 
 #include "addr_auth.h"
 #include "connmgr.h"
@@ -42,8 +42,6 @@
 #include "fa.h"
 #include "dt.h"
 #include "ipcp.h"
-#include "ribconfig.h"
-#include "ribmgr.h"
 
 #include <stdbool.h>
 #include <signal.h>
@@ -56,11 +54,6 @@
 
 static int initialize_components(const struct ipcp_config * conf)
 {
-        if (rib_init()) {
-                log_err("Failed to initialize RIB.");
-                goto fail_rib_init;
-        }
-
         ipcpi.dif_name = strdup(conf->dif_info.dif_name);
         if (ipcpi.dif_name == NULL) {
                 log_err("Failed to set DIF name.");
@@ -85,11 +78,6 @@ static int initialize_components(const struct ipcp_config * conf)
 
         log_dbg("IPCP got address %" PRIu64 ".", ipcpi.dt_addr);
 
-        if (ribmgr_init()) {
-                log_err("Failed to initialize RIB manager.");
-                goto fail_ribmgr;
-        }
-
         if (dt_init(conf->routing_type,
                     conf->addr_size,
                     conf->fd_size,
@@ -117,14 +105,10 @@ static int initialize_components(const struct ipcp_config * conf)
  fail_fa:
         dt_fini();
  fail_dt:
-        ribmgr_fini();
- fail_ribmgr:
         addr_auth_fini();
  fail_addr_auth:
         free(ipcpi.dif_name);
  fail_dif_name:
-        rib_fini();
- fail_rib_init:
         return -1;
 }
 
@@ -136,13 +120,9 @@ static void finalize_components(void)
 
         dt_fini();
 
-        ribmgr_fini();
-
         addr_auth_fini();
 
         free(ipcpi.dif_name);
-
-        rib_fini();
 }
 
 static int start_components(void)
@@ -151,11 +131,6 @@ static int start_components(void)
 
         ipcp_set_state(IPCP_OPERATIONAL);
 
-        if (ribmgr_start()) {
-                log_err("Failed to start RIB manager.");
-                goto fail_ribmgr_start;
-        }
-
         if (fa_start()) {
                 log_err("Failed to start flow allocator.");
                 goto fail_fa_start;
@@ -178,8 +153,6 @@ static int start_components(void)
  fail_enroll_start:
         fa_stop();
  fail_fa_start:
-        ribmgr_stop();
- fail_ribmgr_start:
         ipcp_set_state(IPCP_INIT);
         return -1;
 }
@@ -195,8 +168,6 @@ static void stop_components(void)
 
         fa_stop();
 
-        ribmgr_stop();
-
         ipcp_set_state(IPCP_INIT);
 }
 
@@ -377,6 +348,11 @@ int main(int    argc,
                 goto fail_enroll_init;
         }
 
+        if (notifier_init()) {
+                log_err("Failed to initialize notifier component.");
+                goto fail_notifier_init;
+        }
+
         if (ipcp_boot() < 0) {
                 log_err("Failed to boot IPCP.");
                 goto fail_boot;
@@ -396,6 +372,8 @@ int main(int    argc,
                 finalize_components();
         }
 
+        notifier_fini();
+
         enroll_fini();
 
         connmgr_fini();
@@ -409,6 +387,8 @@ int main(int    argc,
  fail_create_r:
         ipcp_shutdown();
  fail_boot:
+        notifier_fini();
+ fail_notifier_init:
         enroll_fini();
  fail_enroll_init:
         connmgr_fini();
diff --git a/src/ipcpd/normal/neighbors.c b/src/ipcpd/normal/neighbors.c
deleted file mode 100644
index c32e9aa2..00000000
--- a/src/ipcpd/normal/neighbors.c
+++ /dev/null
@@ -1,239 +0,0 @@
-/*
- * Ouroboros - Copyright (C) 2016 - 2017
- *
- * Neighbors
- *
- *    Dimitri Staessens <dimitri.staessens@ugent.be>
- *    Sander Vrijders   <sander.vrijders@ugent.be>
- *
- * 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/.
- */
-
-#define _POSIX_C_SOURCE 199309L
-
-#define OUROBOROS_PREFIX "neighbors"
-
-#include <ouroboros/qoscube.h>
-#include <ouroboros/ipcp-dev.h>
-#include <ouroboros/errno.h>
-#include <ouroboros/logs.h>
-
-#include "neighbors.h"
-
-#include <stdlib.h>
-#include <assert.h>
-#include <inttypes.h>
-
-static void notify_listeners(enum nb_event event,
-                             struct nb *   nb,
-                             struct nbs *  nbs)
-{
-        struct list_head * p = NULL;
-
-        pthread_mutex_lock(&nbs->notifiers_lock);
-
-        list_for_each(p, &nbs->notifiers) {
-                struct nb_notifier * e =
-                        list_entry(p, struct nb_notifier, next);
-                if (e->notify_call(event, nb->conn))
-                        log_err("Listener reported an error.");
-        }
-
-        pthread_mutex_unlock(&nbs->notifiers_lock);
-}
-
-struct nbs * nbs_create(void)
-{
-        struct nbs * nbs;
-
-        nbs = malloc(sizeof(*nbs));
-        if (nbs == NULL)
-                return NULL;
-
-        list_head_init(&nbs->list);
-        list_head_init(&nbs->notifiers);
-
-        if (pthread_mutex_init(&nbs->list_lock, NULL))
-                return NULL;
-
-        if (pthread_mutex_init(&nbs->notifiers_lock, NULL)) {
-                pthread_mutex_destroy(&nbs->list_lock);
-                return NULL;
-        }
-
-        return nbs;
-}
-
-void nbs_destroy(struct nbs * nbs)
-{
-        struct list_head * p = NULL;
-        struct list_head * n = NULL;
-
-        assert(nbs);
-
-        pthread_mutex_lock(&nbs->list_lock);
-
-        list_for_each_safe(p, n, &nbs->list) {
-                struct nb * e = list_entry(p, struct nb, next);
-                list_del(&e->next);
-                free(e);
-        }
-
-        pthread_mutex_unlock(&nbs->list_lock);
-
-        pthread_mutex_destroy(&nbs->list_lock);
-        pthread_mutex_destroy(&nbs->notifiers_lock);
-
-        free(nbs);
-}
-
-int nbs_add(struct nbs * nbs,
-            struct conn  conn)
-{
-        struct nb * nb;
-
-        assert(nbs);
-
-        nb = malloc(sizeof(*nb));
-        if (nb == NULL)
-                return -ENOMEM;
-
-        nb->conn = conn;
-
-        pthread_mutex_lock(&nbs->list_lock);
-
-        list_add(&nb->next, &nbs->list);
-
-        notify_listeners(NEIGHBOR_ADDED, nb, nbs);
-
-        pthread_mutex_unlock(&nbs->list_lock);
-
-        log_info("Added neighbor with fd %d and address %" PRIu64 " to list.",
-                 conn.flow_info.fd, conn.conn_info.addr);
-
-        return 0;
-}
-
-int nbs_update_qos(struct nbs * nbs,
-                   int          fd,
-                   qosspec_t    qs)
-{
-        struct list_head * p = NULL;
-
-        assert(nbs);
-
-        pthread_mutex_lock(&nbs->list_lock);
-
-        list_for_each(p, &nbs->list) {
-                struct nb * e = list_entry(p, struct nb, next);
-                if (e->conn.flow_info.fd == fd) {
-                        e->conn.flow_info.qs = qs;
-
-                        notify_listeners(NEIGHBOR_QOS_CHANGE, e, nbs);
-
-                        pthread_mutex_unlock(&nbs->list_lock);
-                        return 0;
-                }
-        }
-
-        pthread_mutex_unlock(&nbs->list_lock);
-
-        return -1;
-}
-
-int nbs_del(struct nbs * nbs,
-            int          fd)
-{
-        struct list_head * p = NULL;
-        struct list_head * n = NULL;
-
-        assert(nbs);
-
-        pthread_mutex_lock(&nbs->list_lock);
-
-        list_for_each_safe(p, n, &nbs->list) {
-                struct nb * e = list_entry(p, struct nb, next);
-                if (e->conn.flow_info.fd == fd) {
-                        notify_listeners(NEIGHBOR_REMOVED, e, nbs);
-                        list_del(&e->next);
-                        free(e);
-                        pthread_mutex_unlock(&nbs->list_lock);
-                        return 0;
-                }
-        }
-
-        pthread_mutex_unlock(&nbs->list_lock);
-
-        return -1;
-}
-
-bool nbs_has(struct nbs * nbs,
-             uint64_t     addr)
-{
-        struct list_head * p = NULL;
-
-        assert(nbs);
-
-        pthread_mutex_lock(&nbs->list_lock);
-
-        list_for_each(p, &nbs->list) {
-                struct nb * e = list_entry(p, struct nb, next);
-                if (e->conn.conn_info.addr == addr) {
-                        pthread_mutex_unlock(&nbs->list_lock);
-                        return true;
-                }
-        }
-
-        pthread_mutex_unlock(&nbs->list_lock);
-
-        return false;
-}
-
-int nbs_reg_notifier(struct nbs *         nbs,
-                     struct nb_notifier * notify)
-{
-        assert(nbs);
-        assert(notify);
-
-        pthread_mutex_lock(&nbs->notifiers_lock);
-
-        list_add(&notify->next, &nbs->notifiers);
-
-        pthread_mutex_unlock(&nbs->notifiers_lock);
-
-        return 0;
-}
-
-int nbs_unreg_notifier(struct nbs *         nbs,
-                       struct nb_notifier * notify)
-{
-        struct list_head * p = NULL;
-        struct list_head * n = NULL;
-
-        pthread_mutex_lock(&nbs->notifiers_lock);
-
-        list_for_each_safe(p, n, &nbs->notifiers) {
-                struct nb_notifier * e =
-                        list_entry(p, struct nb_notifier, next);
-                if (e == notify) {
-                        list_del(&e->next);
-                        pthread_mutex_unlock(&nbs->notifiers_lock);
-                        return 0;
-                }
-        }
-
-        pthread_mutex_unlock(&nbs->notifiers_lock);
-
-        return -1;
-}
diff --git a/src/ipcpd/normal/neighbors.h b/src/ipcpd/normal/neighbors.h
deleted file mode 100644
index 9c5a6e50..00000000
--- a/src/ipcpd/normal/neighbors.h
+++ /dev/null
@@ -1,84 +0,0 @@
-/*
- * Ouroboros - Copyright (C) 2016 - 2017
- *
- * Neighbors
- *
- *    Dimitri Staessens <dimitri.staessens@ugent.be>
- *    Sander Vrijders   <sander.vrijders@ugent.be>
- *
- * 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/.
- */
-
-#ifndef OUROBOROS_IPCPD_NORMAL_NEIGHBORS_H
-#define OUROBOROS_IPCPD_NORMAL_NEIGHBORS_H
-
-#include <ouroboros/ipcp.h>
-#include <ouroboros/list.h>
-#include <ouroboros/qos.h>
-#include <ouroboros/fqueue.h>
-#include <ouroboros/cacep.h>
-
-#include "ae.h"
-
-enum nb_event {
-        NEIGHBOR_ADDED,
-        NEIGHBOR_REMOVED,
-        NEIGHBOR_QOS_CHANGE
-};
-
-typedef int (* nb_notify_t)(enum nb_event event,
-                            struct conn   conn);
-
-struct nb {
-        struct list_head next;
-        struct conn      conn;
-};
-
-struct nb_notifier {
-        struct list_head next;
-        nb_notify_t      notify_call;
-};
-
-struct nbs {
-        struct list_head notifiers;
-        pthread_mutex_t  notifiers_lock;
-
-        struct list_head list;
-        pthread_mutex_t  list_lock;
-};
-
-struct nbs * nbs_create(void);
-
-void         nbs_destroy(struct nbs * nbs);
-
-int          nbs_add(struct nbs * nbs,
-                     struct conn  conn);
-
-int          nbs_update_qos(struct nbs * nbs,
-                            int          fd,
-                            qosspec_t    qs);
-
-int          nbs_del(struct nbs * nbs,
-                     int          fd);
-
-bool         nbs_has(struct nbs * nbs,
-                     uint64_t     addr);
-
-int          nbs_reg_notifier(struct nbs *         nbs,
-                              struct nb_notifier * notify);
-
-int          nbs_unreg_notifier(struct nbs *         nbs,
-                                struct nb_notifier * notify);
-
-#endif
diff --git a/src/ipcpd/normal/pol-routing-ops.h b/src/ipcpd/normal/pol-routing-ops.h
index 0fec10fc..9804d5ad 100644
--- a/src/ipcpd/normal/pol-routing-ops.h
+++ b/src/ipcpd/normal/pol-routing-ops.h
@@ -26,7 +26,7 @@
 #include "pff.h"
 
 struct pol_routing_ops {
-        int                (* init)(struct nbs * nbs);
+        int                (* init)(void);
 
         void               (* fini)(void);
 
diff --git a/src/ipcpd/normal/pol/flat.c b/src/ipcpd/normal/pol/flat.c
index 7a5a785e..0c4648c5 100644
--- a/src/ipcpd/normal/pol/flat.c
+++ b/src/ipcpd/normal/pol/flat.c
@@ -27,11 +27,9 @@
 #include <ouroboros/logs.h>
 #include <ouroboros/errno.h>
 #include <ouroboros/time_utils.h>
-#include <ouroboros/rib.h>
 #include <ouroboros/utils.h>
 
 #include "ipcp.h"
-#include "ribconfig.h"
 
 #include <time.h>
 #include <stdlib.h>
diff --git a/src/ipcpd/normal/pol/link_state.c b/src/ipcpd/normal/pol/link_state.c
index 512ced7f..7df09bce 100644
--- a/src/ipcpd/normal/pol/link_state.c
+++ b/src/ipcpd/normal/pol/link_state.c
@@ -27,14 +27,16 @@
 #include <ouroboros/errno.h>
 #include <ouroboros/list.h>
 #include <ouroboros/logs.h>
-#include <ouroboros/rib.h>
-#include <ouroboros/rqueue.h>
+#include <ouroboros/utils.h>
+#include <ouroboros/notifier.h>
+#include <ouroboros/dev.h>
+#include <ouroboros/fqueue.h>
 
-#include "ribmgr.h"
-#include "ribconfig.h"
+#include "ae.h"
+#include "connmgr.h"
 #include "graph.h"
-#include "neighbors.h"
 #include "ipcp.h"
+#include "link_state.h"
 #include "pff.h"
 
 #include <assert.h>
@@ -43,39 +45,230 @@
 #include <string.h>
 #include <pthread.h>
 
-#include "fso.pb-c.h"
-typedef Fso fso_t;
+#include "link_state.pb-c.h"
+typedef LinkStateMsg link_state_msg_t;
 
-#define BUF_SIZE 256
-#define RECALC_TIME 4
+#define RECALC_TIME    4
+#define LS_UPDATE_TIME 15
+#define LS_TIMEO       60
+#define LSA_MAX_LEN    128
+
+#ifndef CLOCK_REALTIME_COARSE
+#define CLOCK_REALTIME_COARSE CLOCK_REALTIME
+#endif
 
 struct routing_i {
         struct pff * pff;
         pthread_t    calculator;
 };
 
+/* TODO: link weight support. */
+struct adjacency {
+        struct list_head next;
+
+        uint64_t         dst;
+        uint64_t         src;
+
+        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 nbs *       nbs;
-        struct nb_notifier nb_notifier;
+        struct list_head nbs;
+        fset_t *         mgmt_set;
 
-        struct graph *     graph;
+        struct list_head db;
 
-        ro_set_t *         set;
-        rqueue_t *         queue;
-        pthread_t          rib_listener;
-} link_state;
+        pthread_rwlock_t db_lock;
 
-/* Take under neighbors lock */
-static int addr_to_fd(uint64_t addr)
+        struct graph *   graph;
+
+        pthread_t        lsupdate;
+        pthread_t        lsreader;
+        pthread_t        listener;
+} 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 lsdb_add_nb(uint64_t     addr,
+                       int          fd,
+                       enum nb_type type)
 {
-        struct list_head * p = NULL;
+        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;
+                }
 
-        list_for_each(p, &link_state.nbs->list) {
-                struct nb * e = list_entry(p, struct nb, next);
-                if (e->conn.conn_info.addr == addr)
-                        return e->conn.flow_info.fd;
+                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);
+
+        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);
+                        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 lsdb_add_link(uint64_t    src,
+                         uint64_t    dst,
+                         qosspec_t * qs)
+{
+        struct list_head * p;
+        struct adjacency * adj;
+        struct timespec    now;
+
+        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) {
+                        a->stamp = now.tv_sec;
+                        pthread_rwlock_unlock(&ls.db_lock);
+                        return 0;
+                }
+
+                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->stamp = now.tv_sec;
+
+        list_add_tail(&adj->next, p);
+
+        if (graph_update_edge(ls.graph, src, dst, *qs))
+                log_warn("Failed to add edge to graph.");
+
+        log_dbg("Added %" PRIu64 " - %" PRIu64" to lsdb.", adj->src, adj->dst);
+
+        pthread_rwlock_unlock(&ls.db_lock);
+
+        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.");
+
+                        log_dbg("Removed %" PRIu64 " - %" PRIu64" from lsdb.",
+                                a->src, a->dst);
+
+                        pthread_rwlock_unlock(&ls.db_lock);
+                        free(a);
+                        return 0;
+                }
+        }
+
+        pthread_rwlock_unlock(&ls.db_lock);
+
+        return -EPERM;
+}
+
+static int nbr_to_fd(uint64_t addr)
+{
+        struct list_head * p;
+
+        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) {
+                        pthread_rwlock_unlock(&ls.db_lock);
+                        return nb->fd;
+                }
+        }
+
+        pthread_rwlock_unlock(&ls.db_lock);
+
         return -1;
 }
 
@@ -91,20 +284,19 @@ static void * calculate_pff(void * o)
 
         while (true) {
                 table = NULL;
-                n_table = graph_routing_table(link_state.graph,
+                n_table = graph_routing_table(ls.graph,
                                               ipcpi.dt_addr, &table);
                 if (n_table < 0) {
                         sleep(RECALC_TIME);
                         continue;
                 }
 
-                pthread_mutex_lock(&link_state.nbs->list_lock);
                 pff_lock(instance->pff);
 
                 pff_flush(instance->pff);
 
                 for (i = 0; i < n_table; i++) {
-                        fd = addr_to_fd(table[i]->nhop);
+                        fd = nbr_to_fd(table[i]->nhop);
                         if (fd == -1)
                                 continue;
 
@@ -112,7 +304,6 @@ static void * calculate_pff(void * o)
                 }
 
                 pff_unlock(instance->pff);
-                pthread_mutex_unlock(&link_state.nbs->list_lock);
 
                 freepp(struct routing_table, table, n_table);
                 sleep(RECALC_TIME);
@@ -121,154 +312,209 @@ static void * calculate_pff(void * o)
         return (void *) 0;
 }
 
-static int link_state_neighbor_event(enum nb_event event,
-                                     struct conn   conn)
+static void send_lsa(uint64_t dst,
+                     uint64_t src)
 {
-        char      path[RIB_MAX_PATH_LEN + 1];
-        char      fso_name[RIB_MAX_PATH_LEN + 1];
-        fso_t     fso = FSO__INIT;
-        size_t    len;
-        uint8_t * data;
+        uint8_t            buf[LSA_MAX_LEN];
+        link_state_msg_t   lsa = LINK_STATE_MSG__INIT;
+        size_t             len;
+        struct list_head * p;
 
-        path[0] = '\0';
-        sprintf(fso_name, "%" PRIu64 "-%" PRIu64,
-                ipcpi.dt_addr, conn.conn_info.addr);
-        rib_path_append(rib_path_append(path, ROUTING_NAME), fso_name);
+        lsa.d_addr = dst;
+        lsa.s_addr = src;
 
-        switch (event) {
-        case NEIGHBOR_ADDED:
-                fso.s_addr = ipcpi.dt_addr;
-                fso.d_addr = conn.conn_info.addr;
+        len = link_state_msg__get_packed_size(&lsa);
 
-                len = fso__get_packed_size(&fso);
-                if (len == 0)
-                        return -1;
+        assert(len <= LSA_MAX_LEN);
 
-                data = malloc(len);
-                if (data == NULL)
-                        return -1;
+        link_state_msg__pack(&lsa, buf);
 
-                fso__pack(&fso, data);
+        list_for_each(p, &ls.nbs) {
+                struct nb * nb = list_entry(p, struct nb, next);
+                if (nb->type == NB_MGMT)
+                        flow_write(nb->fd, buf, len);
+        }
+}
 
-                if (rib_add(ROUTING_PATH, fso_name)) {
-                        log_err("Failed to add FSO.");
-                        free(data);
-                        return -1;
-                }
+static void * lsupdate(void * o)
+{
+        struct list_head * p;
+        struct list_head * h;
+        struct timespec    now;
 
-                if (rib_put(path, data, len)) {
-                        log_err("Failed to put FSO in RIB.");
-                        rib_del(path);
-                        free(data);
-                        return -1;
-                }
+        (void) o;
 
-                log_dbg("Added %s to RIB.", path);
+        while (true) {
+                clock_gettime(CLOCK_REALTIME_COARSE, &now);
+
+                pthread_rwlock_rdlock(&ls.db_lock);
+
+                pthread_cleanup_push((void (*) (void *)) pthread_rwlock_unlock,
+                                     (void *) &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_dbg("Failed to delete edge.");
+                                free(adj);
+                                continue;
+                        }
 
-                break;
-        case NEIGHBOR_REMOVED:
-                if (rib_del(path)) {
-                        log_err("Failed to remove FSO.");
-                        return -1;
+                        if (adj->src == ipcpi.dt_addr) {
+                                send_lsa(adj->src, adj->dst);
+                                adj->stamp = now.tv_sec;
+                        }
                 }
 
-                log_dbg("Removed %s from RIB.", path);
+                pthread_cleanup_pop(true);
 
-                break;
-        case NEIGHBOR_QOS_CHANGE:
-                log_info("Not currently supported.");
-                break;
-        default:
-                log_info("Unsupported event for routing.");
-                break;
+                sleep(LS_UPDATE_TIME);
         }
 
-        return 0;
+        return (void *) 0;
 }
 
-static int read_fso(char *  path,
-                    int32_t flag)
+static void * ls_conn_handle(void * o)
 {
-        ssize_t   len;
-        uint8_t   ro[BUF_SIZE];
-        fso_t *   fso;
-        qosspec_t qs;
+        struct conn conn;
 
-        memset(&qs, 0, sizeof(qs));
+        (void) o;
 
-        len = rib_read(path, ro, BUF_SIZE);
-        if (len < 0) {
-                log_err("Failed to read FSO.");
-                return -1;
-        }
+        while (true) {
+                if (connmgr_wait(AEID_MGMT, &conn)) {
+                        log_err("Failed to get next MGMT connection.");
+                        continue;
+                }
 
-        fso = fso__unpack(NULL, len, ro);
-        if (fso == NULL) {
-                log_err("Failed to unpack.");
-                return -1;
-        }
+                /* NOTE: connection acceptance policy could be here. */
 
-        if (flag & RO_MODIFY) {
-                if (graph_update_edge(link_state.graph,
-                                      fso->s_addr, fso->d_addr, qs)) {
-                        fso__free_unpacked(fso, NULL);
-                        return -1;
-                }
-        } else if (flag & RO_DELETE) {
-                if (graph_del_edge(link_state.graph, fso->s_addr, fso->d_addr)) {
-                        fso__free_unpacked(fso, NULL);
-                        return -1;
-                }
+                notifier_event(NOTIFY_MGMT_CONN_ADD, &conn);
         }
 
-        fso__free_unpacked(fso, NULL);
-
         return 0;
 }
 
-static void * rib_listener(void * o)
+
+static void forward_lsm(uint8_t * buf,
+                        size_t    len,
+                        int       in_fd)
 {
-        int32_t flag;
-        char    path[RIB_MAX_PATH_LEN + 1];
-        char ** children;
-        ssize_t len;
-        int     i;
+        struct list_head * p;
 
-        (void) o;
+        pthread_rwlock_rdlock(&ls.db_lock);
 
-        if (ro_set_add(link_state.set, ROUTING_PATH, RO_MODIFY | RO_DELETE)) {
-                log_err("Failed to add to RO set");
-                return (void * ) -1;
+        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);
         }
 
-        len = rib_children(ROUTING_PATH, &children);
-        if (len < 0) {
-                log_err("Failed to retrieve children.");
+        pthread_rwlock_unlock(&ls.db_lock);
+}
+
+static void * lsreader(void * o)
+{
+        fqueue_t * fq;
+        int        ret;
+        uint8_t    buf[LSA_MAX_LEN];
+        size_t     len;
+        int        fd;
+        qosspec_t  qs;
+
+        (void) o;
+
+        memset(&qs, 0, sizeof(qs));
+
+        fq = fqueue_create();
+        if (fq == NULL)
                 return (void *) -1;
-        }
 
-        for (i = 0; i < len; i++) {
-                if (read_fso(children[i], RO_CREATE)) {
-                        log_err("Failed to parse FSO.");
+        pthread_cleanup_push((void (*) (void *)) fqueue_destroy,
+                             (void *) fq);
+
+        while (true) {
+                ret = fevent(ls.mgmt_set, fq, NULL);
+                if (ret < 0) {
+                        log_warn("Event error: %d.", ret);
                         continue;
                 }
-        }
 
-        while (rib_event_wait(link_state.set, link_state.queue, NULL) == 0) {
-                path[0] = '\0';
-                flag = rqueue_next(link_state.queue, path);
-                if (flag < 0)
-                        continue;
+                while ((fd = fqueue_next(fq)) >= 0) {
+                        link_state_msg_t * msg;
+                        len = flow_read(fd, buf, LSA_MAX_LEN);
+                        if (len <= 0)
+                                continue;
 
-                if (read_fso(path, flag)) {
-                        log_err("Failed to parse FSO.");
-                        continue;
+                        msg = link_state_msg__unpack(NULL, len, buf);
+                        if (msg == NULL) {
+                                log_dbg("Failed to unpack link state message.");
+                                continue;
+                        }
+
+                        lsdb_add_link(msg->s_addr, msg->d_addr, &qs);
+
+                        link_state_msg__free_unpacked(msg, NULL);
+
+                        forward_lsm(buf, len, fd);
                 }
         }
 
+        pthread_cleanup_pop(true);
+
         return (void *) 0;
 }
 
+static void handle_event(int          event,
+                         const void * o)
+{
+        /* FIXME: Apply correct QoS on graph */
+        struct conn * c;
+        qosspec_t     qs;
+
+        c = (struct conn *) o;
+
+        memset(&qs, 0, sizeof(qs));
+
+        switch (event) {
+        case NOTIFY_DT_CONN_ADD:
+                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, &qs))
+                        log_dbg("Failed to add adjacency to LSDB.");
+                break;
+        case NOTIFY_DT_CONN_DEL:
+                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_MGMT_CONN_ADD:
+                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.");
+                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 add mgmt neighbor to LSDB.");
+                break;
+        default:
+                log_info("Unknown routing event.");
+                break;
+        }
+}
+
 struct routing_i * link_state_routing_i_create(struct pff * pff)
 {
         struct routing_i * tmp;
@@ -281,7 +527,10 @@ struct routing_i * link_state_routing_i_create(struct pff * pff)
 
         tmp->pff = pff;
 
-        pthread_create(&tmp->calculator, NULL, calculate_pff, (void *) tmp);
+        if (pthread_create(&tmp->calculator, NULL, calculate_pff, tmp)) {
+                free(tmp);
+                return NULL;
+        }
 
         return tmp;
 }
@@ -297,61 +546,100 @@ void link_state_routing_i_destroy(struct routing_i * instance)
         free(instance);
 }
 
-int link_state_init(struct nbs * nbs)
+int link_state_init(void)
 {
-        link_state.graph = graph_create();
-        if (link_state.graph == NULL)
+        struct conn_info info;
+
+        memset(&info, 0, sizeof(info));
+
+        strcpy(info.ae_name, LS_AE);
+        strcpy(info.protocol, LS_PROTO);
+        info.pref_version = 1;
+        info.pref_syntax  = PROTO_GPB;
+        info.addr         = ipcpi.dt_addr;
+
+        ls.graph = graph_create();
+        if (ls.graph == NULL)
                 goto fail_graph;
 
-        if (rib_add(RIB_ROOT, ROUTING_NAME))
-                goto fail_rib_add;
+        if (notifier_reg(handle_event))
+                goto fail_notifier_reg;
+
+        if (pthread_rwlock_init(&ls.db_lock, NULL))
+                goto fail_db_lock_init;
+
+        if (connmgr_ae_init(AEID_MGMT, &info))
+                goto fail_connmgr_ae_init;
 
-        link_state.nbs = nbs;
+        ls.mgmt_set = fset_create();
+        if (ls.mgmt_set == NULL)
+                goto fail_fset_create;
 
-        link_state.nb_notifier.notify_call = link_state_neighbor_event;
-        if (nbs_reg_notifier(link_state.nbs, &link_state.nb_notifier))
-                goto fail_nbs_reg_notifier;
+        list_head_init(&ls.db);
+        list_head_init(&ls.nbs);
 
-        link_state.set = ro_set_create();
-        if (link_state.set == NULL)
-                goto fail_ro_set_create;
+        if (pthread_create(&ls.lsupdate, NULL, lsupdate, NULL))
+                goto fail_pthread_create_lsupdate;
 
-        link_state.queue = rqueue_create();
-        if (link_state.queue == NULL)
-                goto fail_rqueue_create;
+        if (pthread_create(&ls.lsreader, NULL, lsreader, NULL))
+                goto fail_pthread_create_lsreader;
 
-        if (pthread_create(&link_state.rib_listener, NULL, rib_listener, NULL))
-                goto fail_listener_create;
+        if (pthread_create(&ls.listener, NULL, ls_conn_handle, NULL))
+                goto fail_pthread_create_listener;
 
         return 0;
 
- fail_listener_create:
-        ro_set_destroy(link_state.set);
- fail_rqueue_create:
-        ro_set_destroy(link_state.set);
- fail_ro_set_create:
-        nbs_unreg_notifier(link_state.nbs, &link_state.nb_notifier);
- fail_nbs_reg_notifier:
-        rib_del(ROUTING_PATH);
- fail_rib_add:
-        graph_destroy(link_state.graph);
+ 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_ae_fini(AEID_MGMT);
+ fail_connmgr_ae_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)
 {
-        pthread_cancel(link_state.rib_listener);
+        struct list_head * p;
+        struct list_head * h;
+
+        pthread_cancel(ls.listener);
+        pthread_join(ls.listener, NULL);
+
+        pthread_cancel(ls.lsreader);
+        pthread_join(ls.lsreader, NULL);
 
-        pthread_join(link_state.rib_listener, NULL);
+        pthread_cancel(ls.lsupdate);
+        pthread_join(ls.lsupdate, NULL);
 
-        rqueue_destroy(link_state.queue);
+        fset_destroy(ls.mgmt_set);
 
-        ro_set_destroy(link_state.set);
+        connmgr_ae_fini(AEID_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);
+        }
 
-        graph_destroy(link_state.graph);
+        pthread_rwlock_unlock(&ls.db_lock);
 
-        rib_del(ROUTING_PATH);
+        pthread_rwlock_destroy(&ls.db_lock);
 
-        nbs_unreg_notifier(link_state.nbs, &link_state.nb_notifier);
+        notifier_unreg(handle_event);
 }
diff --git a/src/ipcpd/normal/pol/link_state.h b/src/ipcpd/normal/pol/link_state.h
index 9b96bcab..58f90d91 100644
--- a/src/ipcpd/normal/pol/link_state.h
+++ b/src/ipcpd/normal/pol/link_state.h
@@ -23,9 +23,12 @@
 #ifndef OUROBOROS_IPCPD_NORMAL_POL_LINK_STATE_H
 #define OUROBOROS_IPCPD_NORMAL_POL_LINK_STATE_H
 
+#define LS_AE    "Management"
+#define LS_PROTO "LSP"
+
 #include "pol-routing-ops.h"
 
-int                link_state_init(struct nbs * nbs);
+int                link_state_init(void);
 
 void               link_state_fini(void);
 
@@ -33,11 +36,6 @@ struct routing_i * link_state_routing_i_create(struct pff * pff);
 
 void               link_state_routing_i_destroy(struct routing_i * instance);
 
-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
-};
+struct pol_routing_ops link_state_ops;
 
 #endif /* OUROBOROS_IPCPD_NORMAL_POL_LINK_STATE_H */
diff --git a/src/ipcpd/normal/pol/fso.proto b/src/ipcpd/normal/pol/link_state.proto
index 27a78efd..4e2280b0 100644
--- a/src/ipcpd/normal/pol/fso.proto
+++ b/src/ipcpd/normal/pol/link_state.proto
@@ -1,7 +1,7 @@
 /*
  * Ouroboros - Copyright (C) 2016 - 2017
  *
- * Flow State Object message
+ * Link State message
  *
  *    Dimitri Staessens <dimitri.staessens@ugent.be>
  *    Sander Vrijders   <sander.vrijders@ugent.be>
@@ -22,8 +22,8 @@
 
 syntax = "proto2";
 
-message fso {
-        required uint64 s_addr = 1;
-        required uint64 d_addr = 2;
+message link_state_msg {
+        required uint64 d_addr = 1;
+        required uint64 s_addr = 2;
         /* Add QoS parameters of link here */
 };
diff --git a/src/ipcpd/normal/ribconfig.h b/src/ipcpd/normal/ribconfig.h
deleted file mode 100644
index f6d10133..00000000
--- a/src/ipcpd/normal/ribconfig.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * Ouroboros - Copyright (C) 2016 - 2017
- *
- * Normal IPC Process - RIB configuration
- *
- *    Dimitri Staessens <dimitri.staessens@ugent.be>
- *    Sander Vrijders   <sander.vrijders@ugent.be>
- *
- * 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/.
- */
-
-#ifndef OUROBOROS_IPCPD_NORMAL_RIB_CONFIG_H
-#define OUROBOROS_IPCPD_NORMAL_RIB_CONFIG_H
-
-/* RIB configuration for normal */
-#define RIB_MAX_PATH_LEN 256
-
-#define DLR          "/"
-#define ROUTING_NAME "fsdb"
-#define ROUTING_PATH DLR ROUTING_NAME
-
-#endif /* OUROBOROS_IPCPD_NORMAL_RIB_CONFIG_H */
diff --git a/src/ipcpd/normal/ribmgr.c b/src/ipcpd/normal/ribmgr.c
deleted file mode 100644
index a5e7d6ce..00000000
--- a/src/ipcpd/normal/ribmgr.c
+++ /dev/null
@@ -1,423 +0,0 @@
-/*
- * Ouroboros - Copyright (C) 2016 - 2017
- *
- * RIB manager of the IPC Process
- *
- *    Dimitri Staessens <dimitri.staessens@ugent.be>
- *    Sander Vrijders   <sander.vrijders@ugent.be>
- *
- * 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/.
- */
-
-#define _POSIX_C_SOURCE 200112L
-
-#define OUROBOROS_PREFIX "rib-manager"
-
-#include <ouroboros/logs.h>
-#include <ouroboros/cdap.h>
-#include <ouroboros/list.h>
-#include <ouroboros/time_utils.h>
-#include <ouroboros/ipcp-dev.h>
-#include <ouroboros/errno.h>
-#include <ouroboros/dev.h>
-#include <ouroboros/fqueue.h>
-#include <ouroboros/rib.h>
-
-#include "ae.h"
-#include "connmgr.h"
-#include "ipcp.h"
-#include "neighbors.h"
-#include "ribconfig.h"
-#include "ribmgr.h"
-
-#include <stdlib.h>
-#include <pthread.h>
-#include <string.h>
-#include <errno.h>
-#include <assert.h>
-
-#define MGMT_AE          "Management"
-#define RIB_SYNC_TIMEOUT 1
-
-enum ribmgr_state {
-        RIBMGR_NULL = 0,
-        RIBMGR_INIT,
-        RIBMGR_OPERATIONAL,
-        RIBMGR_SHUTDOWN
-};
-
-struct {
-        struct cdap *      cdap;
-
-        pthread_t          reader;
-        pthread_t          sync;
-
-        struct nbs *       nbs;
-        struct ae *        ae;
-
-        struct nb_notifier nb_notifier;
-
-        pthread_rwlock_t   state_lock;
-        enum ribmgr_state  state;
-} ribmgr;
-
-static int ribmgr_neighbor_event(enum nb_event event,
-                                 struct conn   conn)
-{
-        switch (event) {
-        case NEIGHBOR_ADDED:
-                cdap_add_flow(ribmgr.cdap, conn.flow_info.fd);
-                break;
-        case NEIGHBOR_REMOVED:
-                cdap_del_flow(ribmgr.cdap, conn.flow_info.fd);
-                break;
-        default:
-                /* Don't care about other events */
-                break;
-        }
-
-        return 0;
-}
-
-static enum ribmgr_state ribmgr_get_state(void)
-{
-        enum ribmgr_state state;
-
-        pthread_rwlock_rdlock(&ribmgr.state_lock);
-
-        state = ribmgr.state;
-
-        pthread_rwlock_unlock(&ribmgr.state_lock);
-
-        return state;
-}
-
-static void ribmgr_set_state(enum ribmgr_state state)
-{
-        pthread_rwlock_wrlock(&ribmgr.state_lock);
-
-        ribmgr.state = state;
-
-        pthread_rwlock_unlock(&ribmgr.state_lock);
-}
-
-static void * reader(void * o)
-{
-        cdap_key_t       key;
-        enum cdap_opcode oc;
-        char *           name;
-        uint8_t *        data;
-        size_t           len;
-        ssize_t          slen;
-        uint32_t         flags;
-        uint8_t *        buf;
-        int              rval;
-
-        (void) o;
-
-        while (ribmgr_get_state() == RIBMGR_OPERATIONAL) {
-                key = cdap_request_wait(ribmgr.cdap, &oc, &name, &data,
-                                        (size_t *) &len , &flags);
-                assert(key != -EINVAL);
-
-                if (key == INVALID_CDAP_KEY) {
-                        log_warn("Bad CDAP request.");
-                        continue;
-                }
-
-                assert(name);
-                assert(strlen(name));
-
-                switch (oc) {
-                case CDAP_READ:
-                        assert(len == 0);
-                        slen = rib_pack(name, &buf, PACK_HASH_ROOT);
-                        if (slen < 0) {
-                                log_err("Failed to pack %s.", name);
-                                cdap_reply_send(ribmgr.cdap, key, -1, NULL, 0);
-                                free(name);
-                                continue;
-                        }
-
-                        log_dbg("Packed %s (%zu bytes).", name, slen);
-
-                        free(name);
-
-                        if (cdap_reply_send(ribmgr.cdap, key, 0, buf, slen)) {
-                                log_err("Failed to send CDAP reply.");
-                                free(buf);
-                                continue;
-                        }
-
-                        free(buf);
-                        break;
-                case CDAP_WRITE:
-                        assert(len);
-                        assert(data);
-
-                        rval = rib_unpack(data, len, 0);
-                        switch(rval) {
-                        case 0:
-                                break;
-                        case -EFAULT:
-                                log_warn("Hash mismatch, not in sync.");
-                                free(data);
-                                break;
-                        default:
-                                log_warn("Error unpacking %s.", name);
-                                cdap_reply_send(ribmgr.cdap, key, -1, NULL, 0);
-                                free(name);
-                                free(data);
-                                continue;
-                        }
-
-                        free(name);
-
-                        if (cdap_reply_send(ribmgr.cdap, key, 0, NULL, 0)) {
-                                log_err("Failed to send CDAP reply.");
-                                continue;
-                        }
-                        break;
-                case CDAP_CREATE:
-                        assert(len);
-                        assert(data);
-
-                        rval = rib_unpack(data, len, UNPACK_CREATE);
-                        switch(rval) {
-                        case 0:
-                                break;
-                        case -EFAULT:
-                                log_warn("Hash mismatch, not yet in sync.");
-                                free(data);
-                                break;
-                        default:
-                                log_warn("Error unpacking %s.", name);
-                                cdap_reply_send(ribmgr.cdap, key, -1, NULL, 0);
-                                free(name);
-                                free(data);
-                                continue;
-                        }
-
-                        free(name);
-
-                        if (cdap_reply_send(ribmgr.cdap, key, 0, NULL, 0)) {
-                                log_err("Failed to send CDAP reply.");
-                                continue;
-                        }
-                        break;
-                case CDAP_DELETE:
-                        assert(len == 0);
-                        if (rib_del(name)) {
-                                log_warn("Failed deleting %s.", name);
-                                cdap_reply_send(ribmgr.cdap, key, -1, NULL, 0);
-                        }
-
-                        free(name);
-
-                        if (cdap_reply_send(ribmgr.cdap, key, 0, NULL, 0)) {
-                                log_err("Failed to send CDAP reply.");
-                                continue;
-                        }
-                        break;
-                case CDAP_START:
-                case CDAP_STOP:
-                        log_warn("Unsupported CDAP command.");
-                        if (len)
-                                free(data);
-                        break;
-                default:
-                        log_err("Bad CDAP command.");
-                        if (len)
-                                free(data);
-                        break;
-                }
-        }
-
-        return (void *) 0;
-}
-
-char path[RIB_MAX_PATH_LEN + 1];
-
-static void path_reset(void) {
-        path[strlen(RIB_ROOT)] = '\0';
-        assert(strcmp(path, RIB_ROOT) == 0);
-}
-
-static int ribmgr_sync(const char * path)
-{
-        uint8_t *    buf;
-        ssize_t      len;
-        cdap_key_t * keys;
-
-        len = rib_pack(path, &buf, PACK_HASH_ALL);
-        if (len < 0) {
-                log_warn("Failed to pack %s.", path);
-                return -1;
-        }
-
-        keys = cdap_request_send(ribmgr.cdap, CDAP_CREATE, path, buf, len, 0);
-        if (keys != NULL) {
-                cdap_key_t * key = keys;
-                while (*key != INVALID_CDAP_KEY)
-                        cdap_reply_wait(ribmgr.cdap, *(key++), NULL, NULL);
-                free(keys);
-        }
-
-        free(buf);
-
-        return 0;
-}
-
-/* FIXME: Temporary thread, syncs rib with neighbors every second */
-static void * sync_rib(void *o)
-{
-        char ** children;
-        ssize_t ch;
-
-        (void) o;
-
-        strcpy(path, RIB_ROOT);
-
-        while (ribmgr_get_state() == RIBMGR_OPERATIONAL) {
-                sleep(RIB_SYNC_TIMEOUT);
-
-                ch = rib_children(RIB_ROOT, &children);
-                if (ch <= 0)
-                        continue;
-
-                while (ch > 0) {
-                        path_reset();
-
-                        rib_path_append(path, children[--ch]);
-                        free(children[ch]);
-
-                        /* Sync fsdb */
-                        if (strcmp(path, ROUTING_PATH) == 0)
-                                ribmgr_sync(path);
-                }
-
-                free(children);
-        }
-
-        return (void *) 0;
-}
-
-int ribmgr_init(void)
-{
-        struct conn_info info;
-
-        memset(&info, 0, sizeof(info));
-
-        strcpy(info.ae_name, MGMT_AE);
-        strcpy(info.protocol, CDAP_PROTO);
-        info.pref_version = 1;
-        info.pref_syntax = PROTO_GPB;
-        info.addr = 0;
-
-        ribmgr.nbs = nbs_create();
-        if (ribmgr.nbs == NULL) {
-                log_err("Failed to create neighbors.");
-                goto fail_nbs_create;
-        }
-
-        if (connmgr_ae_init(AEID_MGMT, &info, ribmgr.nbs)) {
-                log_err("Failed to register with connmgr.");
-                goto fail_connmgr_ae_init;
-        };
-
-        ribmgr.cdap = cdap_create();
-        if (ribmgr.cdap == NULL) {
-                log_err("Failed to create CDAP instance.");
-                goto fail_cdap_create;
-        }
-
-        ribmgr.nb_notifier.notify_call = ribmgr_neighbor_event;
-        if (nbs_reg_notifier(ribmgr.nbs, &ribmgr.nb_notifier)) {
-                log_err("Failed to register notifier.");
-                goto fail_nbs_reg_notifier;
-        }
-
-        if (pthread_rwlock_init(&ribmgr.state_lock, NULL)) {
-                log_err("Failed to init rwlock.");
-                goto fail_rwlock_init;
-        }
-
-        ribmgr.state = RIBMGR_INIT;
-
-        return 0;
-
- fail_rwlock_init:
-        nbs_unreg_notifier(ribmgr.nbs, &ribmgr.nb_notifier);
- fail_nbs_reg_notifier:
-        cdap_destroy(ribmgr.cdap);
- fail_cdap_create:
-        connmgr_ae_fini(AEID_MGMT);
- fail_connmgr_ae_init:
-        nbs_destroy(ribmgr.nbs);
- fail_nbs_create:
-        return -1;
-}
-
-void ribmgr_fini(void)
-{
-        if (ribmgr_get_state() == RIBMGR_SHUTDOWN) {
-                pthread_join(ribmgr.reader, NULL);
-                pthread_join(ribmgr.sync, NULL);
-        }
-
-        nbs_unreg_notifier(ribmgr.nbs, &ribmgr.nb_notifier);
-        cdap_destroy(ribmgr.cdap);
-        nbs_destroy(ribmgr.nbs);
-
-        connmgr_ae_fini(AEID_MGMT);
-}
-
-int ribmgr_start(void)
-{
-        ribmgr_set_state(RIBMGR_OPERATIONAL);
-
-        if (pthread_create(&ribmgr.sync, NULL, sync_rib, NULL)) {
-                ribmgr_set_state(RIBMGR_NULL);
-                return -1;
-        }
-
-        if (pthread_create(&ribmgr.reader, NULL, reader, NULL)) {
-                ribmgr_set_state(RIBMGR_SHUTDOWN);
-                pthread_cancel(ribmgr.reader);
-                return -1;
-        }
-
-        return 0;
-}
-
-void ribmgr_stop(void)
-{
-        if (ribmgr_get_state() == RIBMGR_OPERATIONAL) {
-                ribmgr_set_state(RIBMGR_SHUTDOWN);
-                pthread_cancel(ribmgr.reader);
-        }
-}
-
-int ribmgr_disseminate(char *           path,
-                       enum diss_target target,
-                       enum diss_freq   freq,
-                       size_t           delay)
-{
-        (void) path;
-        (void) target;
-        (void) freq;
-        (void) delay;
-
-        return 0;
-}
diff --git a/src/ipcpd/normal/ribmgr.h b/src/ipcpd/normal/ribmgr.h
deleted file mode 100644
index 20f87548..00000000
--- a/src/ipcpd/normal/ribmgr.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * Ouroboros - Copyright (C) 2016 - 2017
- *
- * RIB manager of the IPC Process
- *
- *    Dimitri Staessens <dimitri.staessens@ugent.be>
- *    Sander Vrijders   <sander.vrijders@ugent.be>
- *
- * 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/.
- */
-
-#ifndef OUROBOROS_IPCPD_NORMAL_RIBMGR_H
-#define OUROBOROS_IPCPD_NORMAL_RIBMGR_H
-
-#include <ouroboros/ipcp.h>
-#include <ouroboros/utils.h>
-#include <ouroboros/qos.h>
-
-enum diss_target {
-        NONE = 0,
-        NEIGHBORS,
-        ALL_MEMBERS
-};
-
-enum diss_freq {
-        SINGLE = 0,
-        PERIODIC
-};
-
-int  ribmgr_init(void);
-
-void ribmgr_fini(void);
-
-int  ribmgr_start(void);
-
-void ribmgr_stop(void);
-
-int  ribmgr_disseminate(char *           path,
-                        enum diss_target target,
-                        enum diss_freq   freq,
-                        size_t           delay);
-
-#endif /* OUROBOROS_IPCPD_NORMAL_RIBMGR_H */
diff --git a/src/ipcpd/normal/routing.c b/src/ipcpd/normal/routing.c
index 04e6fd76..47ce3518 100644
--- a/src/ipcpd/normal/routing.c
+++ b/src/ipcpd/normal/routing.c
@@ -22,29 +22,24 @@
 
 #define _POSIX_C_SOURCE 200112L
 
-#define OUROBOROS_PREFIX "routing"
-
-#include <ouroboros/logs.h>
+#include <ouroboros/errno.h>
 
 #include "routing.h"
 #include "pol/link_state.h"
 
-
 struct pol_routing_ops * r_ops;
 
-int routing_init(enum pol_routing pr,
-                 struct nbs *     nbs)
+int routing_init(enum pol_routing pr)
 {
         switch (pr) {
         case LINK_STATE:
                 r_ops = &link_state_ops;
                 break;
         default:
-                log_err("Unknown routing type.");
-                return -1;
+                return -ENOTSUP;
         }
 
-        return r_ops->init(nbs);
+        return r_ops->init();
 }
 
 struct routing_i * routing_i_create(struct pff * pff)
diff --git a/src/ipcpd/normal/routing.h b/src/ipcpd/normal/routing.h
index 0ef11020..6c8cae76 100644
--- a/src/ipcpd/normal/routing.h
+++ b/src/ipcpd/normal/routing.h
@@ -27,12 +27,10 @@
 #include <ouroboros/qos.h>
 
 #include "pff.h"
-#include "neighbors.h"
 
 #include <stdint.h>
 
-int                routing_init(enum pol_routing pr,
-                                struct nbs *     nbs);
+int                routing_init(enum pol_routing pr);
 
 void               routing_fini(void);
 
diff --git a/src/ipcpd/normal/sdu_sched.c b/src/ipcpd/normal/sdu_sched.c
index c7e799e2..7a82a874 100644
--- a/src/ipcpd/normal/sdu_sched.c
+++ b/src/ipcpd/normal/sdu_sched.c
@@ -38,9 +38,9 @@
 #define FD_UPDATE_TIMEOUT 10000 /* nanoseconds */
 
 struct sdu_sched {
-        fset_t *   set[QOS_CUBE_MAX];
-        next_sdu_t callback;
-        pthread_t  sdu_readers[IPCP_SCHED_THREADS];
+        fset_t *      set[QOS_CUBE_MAX];
+        next_sdu_fn_t callback;
+        pthread_t     sdu_readers[IPCP_SCHED_THREADS];
 };
 
 static void cleanup_reader(void * o)
@@ -95,10 +95,7 @@ static void * sdu_reader(void * o)
                                 continue;
                         }
 
-                        if (sched->callback(fd, i, sdb)) {
-                                log_warn("Callback reported an error.");
-                                continue;
-                        }
+                        sched->callback(fd, i, sdb);
                 }
         }
 
@@ -107,7 +104,7 @@ static void * sdu_reader(void * o)
         return (void *) 0;
 }
 
-struct sdu_sched * sdu_sched_create(next_sdu_t callback)
+struct sdu_sched * sdu_sched_create(next_sdu_fn_t callback)
 {
         struct sdu_sched * sdu_sched;
         int                i;
diff --git a/src/ipcpd/normal/sdu_sched.h b/src/ipcpd/normal/sdu_sched.h
index 05371452..733f5648 100644
--- a/src/ipcpd/normal/sdu_sched.h
+++ b/src/ipcpd/normal/sdu_sched.h
@@ -26,11 +26,11 @@
 #include <ouroboros/ipcp-dev.h>
 #include <ouroboros/fqueue.h>
 
-typedef int (* next_sdu_t)(int                  fd,
-                           qoscube_t            qc,
-                           struct shm_du_buff * sdb);
+typedef void (* next_sdu_fn_t)(int                  fd,
+                               qoscube_t            qc,
+                               struct shm_du_buff * sdb);
 
-struct sdu_sched * sdu_sched_create(next_sdu_t callback);
+struct sdu_sched * sdu_sched_create(next_sdu_fn_t callback);
 
 void               sdu_sched_destroy(struct sdu_sched * sdu_sched);