build: Revise the build system

This revises the build system to have configuration per system
component. System settings can now be set using cmake.

The standard compliance defines were removed from configuration header
and are set in the sources where needed. Also some small code
refactors, such as moving the data for shims out of the ipcp structure
to the respective shims were performed.

36 files changed, 294 insertions, 292 deletions

diff --git a/src/ipcpd/CMakeLists.txt b/src/ipcpd/CMakeLists.txt
index b2f350dd..6356b1ba 100644
--- a/src/ipcpd/CMakeLists.txt
+++ b/src/ipcpd/CMakeLists.txt
@@ -1,3 +1,12 @@
+set(IPCP_ACCEPT_TIMEOUT 100 CACHE STRING
+  "Timeout for accept in IPCP mainloop threads (ms)")
+set(IPCP_SCHED_THREADS 2 CACHE STRING
+  "Number of scheduler threads in the normal IPCP")
+set(IPCP_MIN_THREADS 4 CACHE STRING
+  "Minimum number of worker threads in the IPCP")
+set(IPCP_ADD_THREADS 4 CACHE STRING
+  "Number of extra threads to start when an IPCP faces thread starvation")
+
 set(IPCP_SOURCES
   # Add source files here
   ${CMAKE_CURRENT_SOURCE_DIR}/ipcp.c
@@ -8,3 +17,6 @@ add_subdirectory(local)
 add_subdirectory(normal)
 add_subdirectory(shim-udp)
 add_subdirectory(shim-eth-llc)
+
+configure_file("${CMAKE_CURRENT_SOURCE_DIR}/config.h.in"
+  "${CMAKE_CURRENT_BINARY_DIR}/config.h" @ONLY)
diff --git a/src/ipcpd/config.h.in b/src/ipcpd/config.h.in
new file mode 100644
index 00000000..0bef20be
--- /dev/null
+++ b/src/ipcpd/config.h.in
@@ -0,0 +1,49 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2017
+ *
+ * IPC process configuration
+ *
+ *    Dimitri Staessens <[email protected]>
+ *    Sander Vrijders   <[email protected]>
+ *
+ * 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 PTHREAD_COND_CLOCK  @PTHREAD_COND_CLOCK@
+
+#define SYS_MAX_FLOWS       @SYS_MAX_FLOWS@
+#define AP_RES_FDS          @AP_RES_FDS@
+#define AP_MAX_FLOWS        @AP_MAX_FLOWS@
+
+#define IPCP_ACCEPT_TIMEOUT @IPCP_ACCEPT_TIMEOUT@
+
+#define SOCKET_TIMEOUT      @SOCKET_TIMEOUT@
+
+#define SHM_BUFFER_SIZE     @SHM_BUFFER_SIZE@
+
+#define IPCP_MIN_THREADS    @IPCP_MIN_THREADS@
+#define IPCP_ADD_THREADS    @IPCP_ADD_THREADS@
+
+/* normal IPCP */
+#define IPCP_SCHED_THREADS  @IPCP_SCHED_THREADS@
+#define PFT_SIZE            @PFT_SIZE@
+
+/* shim-udp */
+#define NSUPDATE_EXEC       "@NSUPDATE_EXECUTABLE@"
+#define NSLOOKUP_EXEC       "@NSLOOKUP_EXECUTABLE@"
+
+/* shim-eth-llc */
+#cmakedefine HAVE_NETMAP
+#cmakedefine HAVE_BPF
+#cmakedefine HAVE_RAW_SOCKETS
diff --git a/src/ipcpd/ipcp.c b/src/ipcpd/ipcp.c
index 7066fb04..349436ca 100644
--- a/src/ipcpd/ipcp.c
+++ b/src/ipcpd/ipcp.c
@@ -20,9 +20,13 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
+#define _POSIX_C_SOURCE 200112L
+#define __XSI_VISIBLE   500
+
+#include "config.h"
+
 #define OUROBOROS_PREFIX "ipcpd/ipcp"
 
-#include <ouroboros/config.h>
 #include <ouroboros/hash.h>
 #include <ouroboros/logs.h>
 #include <ouroboros/time_utils.h>
@@ -535,7 +539,6 @@ int ipcp_init(int               argc,
 
         ipcpi.irmd_fd   = -1;
         ipcpi.state     = IPCP_NULL;
-        ipcpi.shim_data = NULL;
 
         ipcpi.sock_path = ipcp_sock_path(getpid());
         if (ipcpi.sock_path == NULL)
@@ -599,20 +602,10 @@ int ipcp_init(int               argc,
         ipcpi.alloc_id = -1;
         ipcpi.csockfd  = -1;
 
-        if (type != IPCP_NORMAL) {
-                ipcpi.shim_data = shim_data_create();
-                if (ipcpi.shim_data == NULL) {
-                        ret = -ENOMEM;
-                        goto fail_shim_data;
-                }
-        }
-
         pthread_condattr_destroy(&cattr);
 
         return 0;
 
- fail_shim_data:
-        pthread_cond_destroy(&ipcpi.acc_cond);
  fail_acc_cond:
         pthread_cond_destroy(&ipcpi.cmd_cond);
  fail_cmd_cond:
@@ -703,8 +696,6 @@ void ipcp_fini()
 
         free(ipcpi.sock_path);
 
-        shim_data_destroy(ipcpi.shim_data);
-
         pthread_cond_destroy(&ipcpi.state_cond);
         pthread_mutex_destroy(&ipcpi.state_mtx);
         pthread_cond_destroy(&ipcpi.alloc_cond);
diff --git a/src/ipcpd/ipcp.h b/src/ipcpd/ipcp.h
index 422670d7..cd18d198 100644
--- a/src/ipcpd/ipcp.h
+++ b/src/ipcpd/ipcp.h
@@ -20,16 +20,14 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
-#ifndef IPCPD_IPCP_H
-#define IPCPD_IPCP_H
+#ifndef OUROBOROS_IPCPD_IPCP_H
+#define OUROBOROS_IPCPD_IPCP_H
 
-#include <ouroboros/config.h>
 #include <ouroboros/hash.h>
 #include <ouroboros/ipcp.h>
+#include <ouroboros/qoscube.h>
 #include <ouroboros/sockets.h>
 
-#include "shim-data.h"
-
 #include <pthread.h>
 #include <time.h>
 #include <signal.h>
@@ -80,8 +78,6 @@ struct ipcp {
         struct ipcp_ops *  ops;
         int                irmd_fd;
 
-        struct shim_data * shim_data;
-
         enum ipcp_state    state;
         pthread_rwlock_t   state_lock;
         pthread_mutex_t    state_mtx;
@@ -136,4 +132,4 @@ uint8_t *       ipcp_hash_dup(const uint8_t * hash);
 void            ipcp_hash_str(char            buf[],
                               const uint8_t * hash);
 
-#endif
+#endif /* OUROBOROS_IPCPD_IPCP_H */
diff --git a/src/ipcpd/local/CMakeLists.txt b/src/ipcpd/local/CMakeLists.txt
index 824b4ca6..925092bd 100644
--- a/src/ipcpd/local/CMakeLists.txt
+++ b/src/ipcpd/local/CMakeLists.txt
@@ -12,7 +12,7 @@ include_directories(${CURRENT_BINARY_PARENT_DIR})
 include_directories(${CMAKE_SOURCE_DIR}/include)
 include_directories(${CMAKE_BINARY_DIR}/include)
 
-set(IPCP_LOCAL_TARGET ipcpd-local CACHE STRING "IPCP_LOCAL")
+set(IPCP_LOCAL_TARGET ipcpd-local CACHE INTERNAL "")
 
 set(SHIM_LOCAL_SOURCES
   # Add source files here
diff --git a/src/ipcpd/local/main.c b/src/ipcpd/local/main.c
index 241a47eb..37d23fc3 100644
--- a/src/ipcpd/local/main.c
+++ b/src/ipcpd/local/main.c
@@ -20,9 +20,12 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
+#define _POSIX_C_SOURCE 200112L
+
+#include "config.h"
+
 #define OUROBOROS_PREFIX "ipcpd-local"
 
-#include <ouroboros/config.h>
 #include <ouroboros/hash.h>
 #include <ouroboros/logs.h>
 #include <ouroboros/errno.h>
@@ -33,6 +36,7 @@
 #include <ouroboros/local-dev.h>
 
 #include "ipcp.h"
+#include "shim-data.h"
 
 #include <string.h>
 #include <stdlib.h>
@@ -44,18 +48,20 @@
 #define THIS_TYPE IPCP_LOCAL
 
 struct {
-        int                   in_out[IRMD_MAX_FLOWS];
-        flow_set_t *          flows;
-        fqueue_t *            fq;
+        struct shim_data * shim_data;
 
-        pthread_rwlock_t      lock;
-        pthread_t             sduloop;
+        int                in_out[SYS_MAX_FLOWS];
+        flow_set_t *       flows;
+        fqueue_t *         fq;
+
+        pthread_rwlock_t   lock;
+        pthread_t          sduloop;
 } local_data;
 
 static int local_data_init(void)
 {
         int i;
-        for (i = 0; i < IRMD_MAX_FLOWS; ++i)
+        for (i = 0; i < SYS_MAX_FLOWS; ++i)
                 local_data.in_out[i] = -1;
 
         local_data.flows = flow_set_create();
@@ -68,12 +74,20 @@ static int local_data_init(void)
                 return -ENOMEM;
         }
 
+        local_data.shim_data = shim_data_create();
+        if (local_data.shim_data == NULL) {
+                fqueue_destroy(local_data.fq);
+                flow_set_destroy(local_data.flows);
+                return -ENOMEM;
+        }
+
         pthread_rwlock_init(&local_data.lock, NULL);
 
         return 0;
 }
 
 static void local_data_fini(void){
+        shim_data_destroy(local_data.shim_data);
         flow_set_destroy(local_data.flows);
         fqueue_destroy(local_data.fq);
         pthread_rwlock_destroy(&local_data.lock);
@@ -142,7 +156,7 @@ static int ipcp_local_reg(const uint8_t * hash)
                 return -ENOMEM;
         }
 
-        if (shim_data_reg_add_entry(ipcpi.shim_data, hash_dup)) {
+        if (shim_data_reg_add_entry(local_data.shim_data, hash_dup)) {
                 log_dbg("Failed to add " HASH_FMT " to local registry.",
                         HASH_VAL(hash));
                 free(hash_dup);
@@ -156,7 +170,7 @@ static int ipcp_local_reg(const uint8_t * hash)
 
 static int ipcp_local_unreg(const uint8_t * hash)
 {
-        shim_data_reg_del_entry(ipcpi.shim_data, hash);
+        shim_data_reg_del_entry(local_data.shim_data, hash);
 
         log_info("Unregistered " HASH_FMT ".",  HASH_VAL(hash));
 
@@ -167,7 +181,7 @@ static int ipcp_local_query(const uint8_t * hash)
 {
         int ret;
 
-        ret = (shim_data_reg_has(ipcpi.shim_data, hash) ? 0 : -1);
+        ret = (shim_data_reg_has(local_data.shim_data, hash) ? 0 : -1);
 
         return ret;
 }
diff --git a/src/ipcpd/normal/CMakeLists.txt b/src/ipcpd/normal/CMakeLists.txt
index 8c2d4efc..7a40e94c 100644
--- a/src/ipcpd/normal/CMakeLists.txt
+++ b/src/ipcpd/normal/CMakeLists.txt
@@ -12,7 +12,7 @@ include_directories(${CURRENT_BINARY_PARENT_DIR})
 include_directories(${CMAKE_SOURCE_DIR}/include)
 include_directories(${CMAKE_BINARY_DIR}/include)
 
-set(IPCP_NORMAL_TARGET ipcpd-normal CACHE STRING "IPCP_NORMAL_TARGET")
+set(IPCP_NORMAL_TARGET ipcpd-normal CACHE INTERNAL "")
 
 protobuf_generate_c(FLOW_ALLOC_SRCS FLOW_ALLOC_HDRS flow_alloc.proto)
 protobuf_generate_c(KAD_PROTO_SRCS KAD_PROTO_HDRS kademlia.proto)
@@ -20,6 +20,10 @@ 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)
 
+math(EXPR PFT_EXPR "1 << 12")
+set(PFT_SIZE ${PFT_EXPR} CACHE STRING
+  "Size of the PDU forwarding table")
+
 set(SOURCE_FILES
   # Add source files here
   addr_auth.c
@@ -56,4 +60,7 @@ endif (CMAKE_BUILD_TYPE MATCHES Debug)
 install(TARGETS ipcpd-normal RUNTIME DESTINATION sbin)
 
 add_subdirectory(pol/tests)
-add_subdirectory(tests)
+
+if (NOT GNU)
+  add_subdirectory(tests)
+endif ()
diff --git a/src/ipcpd/normal/addr_auth.c b/src/ipcpd/normal/addr_auth.c
index 56b41384..e327e2fa 100644
--- a/src/ipcpd/normal/addr_auth.c
+++ b/src/ipcpd/normal/addr_auth.c
@@ -22,7 +22,6 @@
 
 #define OUROBOROS_PREFIX "addr_auth"
 
-#include <ouroboros/config.h>
 #include <ouroboros/logs.h>
 
 #include "addr_auth.h"
diff --git a/src/ipcpd/normal/connmgr.c b/src/ipcpd/normal/connmgr.c
index 1513c12a..f48175fa 100644
--- a/src/ipcpd/normal/connmgr.c
+++ b/src/ipcpd/normal/connmgr.c
@@ -20,14 +20,16 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
+#define _POSIX_C_SOURCE 200112L
+
 #define OUROBOROS_PREFIX "normal-ipcp"
 
-#include <ouroboros/config.h>
-#include <ouroboros/logs.h>
 #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 "ae.h"
 #include "connmgr.h"
diff --git a/src/ipcpd/normal/dht.c b/src/ipcpd/normal/dht.c
index f41541d2..65e26406 100644
--- a/src/ipcpd/normal/dht.c
+++ b/src/ipcpd/normal/dht.c
@@ -20,9 +20,12 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
+#define _POSIX_C_SOURCE 200112L
+
+#include "config.h"
+
 #define OUROBOROS_PREFIX "dht"
 
-#include <ouroboros/config.h>
 #include <ouroboros/hash.h>
 #include <ouroboros/bitmap.h>
 #include <ouroboros/errno.h>
diff --git a/src/ipcpd/normal/dir.c b/src/ipcpd/normal/dir.c
index 231ba110..feae7013 100644
--- a/src/ipcpd/normal/dir.c
+++ b/src/ipcpd/normal/dir.c
@@ -20,9 +20,10 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
+#define _POSIX_C_SOURCE 200112L
+
 #define OUROBOROS_PREFIX "directory"
 
-#include <ouroboros/config.h>
 #include <ouroboros/endian.h>
 #include <ouroboros/errno.h>
 #include <ouroboros/logs.h>
diff --git a/src/ipcpd/normal/dt.c b/src/ipcpd/normal/dt.c
index 290c409d..173266f4 100644
--- a/src/ipcpd/normal/dt.c
+++ b/src/ipcpd/normal/dt.c
@@ -20,9 +20,12 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
+#define _POSIX_C_SOURCE 200112L
+
+#include "config.h"
+
 #define OUROBOROS_PREFIX "dt-ae"
 
-#include <ouroboros/config.h>
 #include <ouroboros/bitmap.h>
 #include <ouroboros/errno.h>
 #include <ouroboros/logs.h>
diff --git a/src/ipcpd/normal/dt_pci.c b/src/ipcpd/normal/dt_pci.c
index e139cf91..9e6dfa89 100644
--- a/src/ipcpd/normal/dt_pci.c
+++ b/src/ipcpd/normal/dt_pci.c
@@ -20,7 +20,6 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
-#include <ouroboros/config.h>
 #include <ouroboros/errno.h>
 #include <ouroboros/rib.h>
 
diff --git a/src/ipcpd/normal/enroll.c b/src/ipcpd/normal/enroll.c
index be1596d0..471230bc 100644
--- a/src/ipcpd/normal/enroll.c
+++ b/src/ipcpd/normal/enroll.c
@@ -19,9 +19,11 @@
  * 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 "enrollment"
 
-#include <ouroboros/config.h>
 #include <ouroboros/endian.h>
 #include <ouroboros/errno.h>
 #include <ouroboros/cdap.h>
diff --git a/src/ipcpd/normal/fa.c b/src/ipcpd/normal/fa.c
index 2488f017..682dc5c6 100644
--- a/src/ipcpd/normal/fa.c
+++ b/src/ipcpd/normal/fa.c
@@ -20,9 +20,12 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
+#define _POSIX_C_SOURCE 200112L
+
+#include "config.h"
+
 #define OUROBOROS_PREFIX "flow-allocator"
 
-#include <ouroboros/config.h>
 #include <ouroboros/logs.h>
 #include <ouroboros/fqueue.h>
 #include <ouroboros/rib.h>
diff --git a/src/ipcpd/normal/gam.c b/src/ipcpd/normal/gam.c
index 9997506c..3b4cc5de 100644
--- a/src/ipcpd/normal/gam.c
+++ b/src/ipcpd/normal/gam.c
@@ -20,9 +20,10 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
+#define _POSIX_C_SOURCE 200112L
+
 #define OUROBOROS_PREFIX "dt-gam"
 
-#include <ouroboros/config.h>
 #include <ouroboros/cdap.h>
 #include <ouroboros/dev.h>
 #include <ouroboros/logs.h>
diff --git a/src/ipcpd/normal/main.c b/src/ipcpd/normal/main.c
index 27fefdb6..95b0ed56 100644
--- a/src/ipcpd/normal/main.c
+++ b/src/ipcpd/normal/main.c
@@ -20,9 +20,12 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
+#define _POSIX_C_SOURCE 200809L
+
+#include "config.h"
+
 #define OUROBOROS_PREFIX "normal-ipcp"
 
-#include <ouroboros/config.h>
 #include <ouroboros/endian.h>
 #include <ouroboros/logs.h>
 #include <ouroboros/ipcp-dev.h>
diff --git a/src/ipcpd/normal/neighbors.c b/src/ipcpd/normal/neighbors.c
index 0ac5e958..5da0f0df 100644
--- a/src/ipcpd/normal/neighbors.c
+++ b/src/ipcpd/normal/neighbors.c
@@ -20,9 +20,10 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
+#define _POSIX_C_SOURCE 199309L
+
 #define OUROBOROS_PREFIX "neighbors"
 
-#include <ouroboros/config.h>
 #include <ouroboros/qoscube.h>
 #include <ouroboros/ipcp-dev.h>
 #include <ouroboros/errno.h>
diff --git a/src/ipcpd/normal/pff.c b/src/ipcpd/normal/pff.c
index acf4db1a..d6c9ddee 100644
--- a/src/ipcpd/normal/pff.c
+++ b/src/ipcpd/normal/pff.c
@@ -20,9 +20,12 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
+#define _POSIX_C_SOURCE 200112L
+
+#include "config.h"
+
 #define OUROBOROS_PREFIX "pff"
 
-#include <ouroboros/config.h>
 #include <ouroboros/logs.h>
 #include <ouroboros/hashtable.h>
 #include <ouroboros/errno.h>
diff --git a/src/ipcpd/normal/pol/complete.c b/src/ipcpd/normal/pol/complete.c
index e31f345a..6c6e7372 100644
--- a/src/ipcpd/normal/pol/complete.c
+++ b/src/ipcpd/normal/pol/complete.c
@@ -20,9 +20,10 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
+#define _POSIX_C_SOURCE 200112L
+
 #define OUROBOROS_PREFIX "complete"
 
-#include <ouroboros/config.h>
 #include <ouroboros/qoscube.h>
 #include <ouroboros/rib.h>
 #include <ouroboros/dev.h>
diff --git a/src/ipcpd/normal/pol/flat.c b/src/ipcpd/normal/pol/flat.c
index 966d0d03..1fece07f 100644
--- a/src/ipcpd/normal/pol/flat.c
+++ b/src/ipcpd/normal/pol/flat.c
@@ -20,9 +20,10 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
+#define _POSIX_C_SOURCE 200112L
+
 #define OUROBOROS_PREFIX "flat-addr-auth"
 
-#include <ouroboros/config.h>
 #include <ouroboros/logs.h>
 #include <ouroboros/errno.h>
 #include <ouroboros/time_utils.h>
diff --git a/src/ipcpd/normal/pol/graph.c b/src/ipcpd/normal/pol/graph.c
index 7ec9c035..3611f0b0 100644
--- a/src/ipcpd/normal/pol/graph.c
+++ b/src/ipcpd/normal/pol/graph.c
@@ -20,9 +20,10 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
+#define _POSIX_C_SOURCE 200112L
+
 #define OUROBOROS_PREFIX "graph"
 
-#include <ouroboros/config.h>
 #include <ouroboros/logs.h>
 #include <ouroboros/errno.h>
 #include <ouroboros/list.h>
diff --git a/src/ipcpd/normal/pol/link_state.c b/src/ipcpd/normal/pol/link_state.c
index 322b22d7..9dfed5c0 100644
--- a/src/ipcpd/normal/pol/link_state.c
+++ b/src/ipcpd/normal/pol/link_state.c
@@ -20,9 +20,10 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
+#define _POSIX_C_SOURCE 200112L
+
 #define OUROBOROS_PREFIX "link-state-routing"
 
-#include <ouroboros/config.h>
 #include <ouroboros/errno.h>
 #include <ouroboros/list.h>
 #include <ouroboros/logs.h>
diff --git a/src/ipcpd/normal/pol/tests/graph_test.c b/src/ipcpd/normal/pol/tests/graph_test.c
index 30201800..87574187 100644
--- a/src/ipcpd/normal/pol/tests/graph_test.c
+++ b/src/ipcpd/normal/pol/tests/graph_test.c
@@ -20,7 +20,8 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
-#include <ouroboros/config.h>
+#define _POSIX_C_SOURCE 200112L
+
 #include <ouroboros/utils.h>
 
 #include <stdio.h>
diff --git a/src/ipcpd/normal/ribmgr.c b/src/ipcpd/normal/ribmgr.c
index ee81581f..ab2aa430 100644
--- a/src/ipcpd/normal/ribmgr.c
+++ b/src/ipcpd/normal/ribmgr.c
@@ -20,9 +20,10 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
+#define _POSIX_C_SOURCE 200112L
+
 #define OUROBOROS_PREFIX "rib-manager"
 
-#include <ouroboros/config.h>
 #include <ouroboros/logs.h>
 #include <ouroboros/cdap.h>
 #include <ouroboros/list.h>
diff --git a/src/ipcpd/normal/routing.c b/src/ipcpd/normal/routing.c
index 5bf985fb..c00ec67c 100644
--- a/src/ipcpd/normal/routing.c
+++ b/src/ipcpd/normal/routing.c
@@ -20,9 +20,10 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
+#define _POSIX_C_SOURCE 200112L
+
 #define OUROBOROS_PREFIX "routing"
 
-#include <ouroboros/config.h>
 #include <ouroboros/logs.h>
 
 #include "routing.h"
diff --git a/src/ipcpd/normal/sdu_sched.c b/src/ipcpd/normal/sdu_sched.c
index b46f2563..f3550d5c 100644
--- a/src/ipcpd/normal/sdu_sched.c
+++ b/src/ipcpd/normal/sdu_sched.c
@@ -20,9 +20,12 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
+#define _POSIX_C_SOURCE 199309L
+
+#include "config.h"
+
 #define OUROBOROS_PREFIX "sdu-scheduler"
 
-#include <ouroboros/config.h>
 #include <ouroboros/logs.h>
 #include <ouroboros/errno.h>
 
diff --git a/src/ipcpd/shim-data.c b/src/ipcpd/shim-data.c
index 0b81a36a..747a210b 100644
--- a/src/ipcpd/shim-data.c
+++ b/src/ipcpd/shim-data.c
@@ -20,7 +20,10 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
-#include <ouroboros/config.h>
+#define _POSIX_C_SOURCE 200112L
+
+#include "config.h"
+
 #include <ouroboros/list.h>
 #include <ouroboros/time_utils.h>
 #include <ouroboros/errno.h>
diff --git a/src/ipcpd/shim-data.h b/src/ipcpd/shim-data.h
index 4fd1ad3d..983f97f6 100644
--- a/src/ipcpd/shim-data.h
+++ b/src/ipcpd/shim-data.h
@@ -20,8 +20,8 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
-#ifndef IPCPD_IPCP_DATA_H
-#define IPCPD_IPCP_DATA_H
+#ifndef OUROBOROS_IPCPD_IPCP_DATA_H
+#define OUROBOROS_IPCPD_IPCP_DATA_H
 
 #include <ouroboros/qoscube.h>
 #include <ouroboros/list.h>
@@ -93,4 +93,4 @@ void               shim_data_dir_query_destroy(struct dir_query * query);
 
 int                shim_data_dir_query_wait(struct dir_query *      query,
                                             const struct timespec * timeout);
-#endif /* IPCPD_SHIM_DATA_H */
+#endif /* OUROBOROS_IPCPD_SHIM_DATA_H */
diff --git a/src/ipcpd/shim-eth-llc/CMakeLists.txt b/src/ipcpd/shim-eth-llc/CMakeLists.txt
index 21003cf0..6474eb8d 100644
--- a/src/ipcpd/shim-eth-llc/CMakeLists.txt
+++ b/src/ipcpd/shim-eth-llc/CMakeLists.txt
@@ -15,26 +15,56 @@ include_directories(${CMAKE_BINARY_DIR}/include)
 find_path(NETMAP_C_INCLUDE_DIR
   net/netmap_user.h
   HINTS /usr/include /usr/local/include
-  )
+)
+
+mark_as_advanced(NETMAP_C_INCLUDE_DIR)
+
+if (CMAKE_SYSTEM_NAME STREQUAL "Linux")
+  set(DISABLE_RAW_SOCKETS FALSE CACHE BOOL
+    "Disable raw socket support for LLC shim")
+  if (NOT DISABLE_RAW_SOCKETS)
+    message(STATUS "Raw socket support for shim-eth-llc enabled")
+    set(HAVE_RAW_SOCKETS TRUE PARENT_SCOPE)
+  else ()
+    message(STATUS "Raw socket support for shim-eth-llc disabled by user")
+  endif ()
+endif ()
 
-find_path(BPF_C_INCLUDE_DIR
-  net/bpf.h
-  HINTS /usr/include /usr/local/include
+if (NOT CMAKE_SYSTEM_NAME STREQUAL "Linux")
+  find_path(BPF_C_INCLUDE_DIR
+            net/bpf.h
+            HINTS /usr/include /usr/local/include
   )
 
-if (NOT CMAKE_SYSTEM_NAME STREQUAL "Linux" AND
-    NOT BPF_C_INCLUDE_DIR STREQUAL "BPF_C_INCLUDE_DIR-NOTFOUND")
-  message(STATUS "Found Berkeley Packet Filter headers in ${BPF_C_INCLUDE_DIR}")
-  set(HAVE_BPF "1" CACHE STRING "Have Berkeley Packet Filter")
+  mark_as_advanced(BPF_C_INCLUDE_DIR)
+
+  if (BPF_C_INCLUDE_DIR)
+    set(DISABLE_BPF FALSE CACHE BOOL
+        "Disable Berkeley Packet Filter support for LLC shim")
+    if (NOT DISABLE_BPF)
+      message(STATUS "Berkeley Packet Filter support "
+                     "for shim-eth-llc enabled")
+      set(HAVE_BPF TRUE PARENT_SCOPE)
+    else ()
+      message(STATUS "Berkeley Packet Filter support "
+                     "for shim-eth-llc disabled by user")
+    endif ()
+  endif ()
 endif ()
 
-if (NOT NETMAP_C_INCLUDE_DIR STREQUAL "NETMAP_C_INCLUDE_DIR-NOTFOUND")
-  message(STATUS "Found netmap headers in ${NETMAP_C_INCLUDE_DIR}")
-  set(HAVE_NETMAP "1" CACHE STRING "Have netmap")
-  test_and_set_c_compiler_flag_global(-std=c99)
+if (NETMAP_C_INCLUDE_DIR)
+  set(DISABLE_NETMAP FALSE CACHE BOOL
+      "Disable netmap support for LLC shim")
+  if (NOT DISABLE_NETMAP)
+    message(STATUS "Netmap support for shim-eth-llc enabled")
+    set(HAVE_NETMAP TRUE PARENT_SCOPE)
+    test_and_set_c_compiler_flag_global(-std=c99)
+  else ()
+    message(STATUS "Netmap support for shim-eth-llc disabled by user")
+  endif ()
 endif ()
 
-if (HAVE_NETMAP OR HAVE_BPF OR CMAKE_SYSTEM_NAME STREQUAL "Linux")
+if (HAVE_NETMAP OR HAVE_BPF OR HAVE_RAW_SOCKETS)
   message(STATUS "Supported raw Ethernet API found, building shim-eth-llc")
   protobuf_generate_c(SHIM_ETH_LLC_PROTO_SRCS SHIM_ETH_LLC_PROTO_HDRS
     shim_eth_llc_messages.proto)
@@ -44,8 +74,7 @@ if (HAVE_NETMAP OR HAVE_BPF OR CMAKE_SYSTEM_NAME STREQUAL "Linux")
     ${CMAKE_CURRENT_SOURCE_DIR}/main.c
   )
 
-  set(IPCP_SHIM_ETH_LLC_TARGET ipcpd-shim-eth-llc
-      CACHE STRING "IPCP_SHIM_ETH_LLC_TARGET")
+  set(IPCP_SHIM_ETH_LLC_TARGET ipcpd-shim-eth-llc CACHE INTERNAL "")
 
   add_executable(ipcpd-shim-eth-llc ${SHIM_ETH_LLC_SOURCES} ${IPCP_SOURCES}
     ${SHIM_ETH_LLC_PROTO_SRCS})
@@ -55,7 +84,8 @@ if (HAVE_NETMAP OR HAVE_BPF OR CMAKE_SYSTEM_NAME STREQUAL "Linux")
   endif ()
 
   if (HAVE_NETMAP AND NOT APPLE)
-    target_include_directories(ipcpd-shim-eth-llc PUBLIC ${NETMAP_C_INCLUDE_DIR})
+    target_include_directories(ipcpd-shim-eth-llc PUBLIC
+      ${NETMAP_C_INCLUDE_DIR})
   endif ()
 
   target_link_libraries(ipcpd-shim-eth-llc LINK_PUBLIC ouroboros
diff --git a/src/ipcpd/shim-eth-llc/main.c b/src/ipcpd/shim-eth-llc/main.c
index 55406a00..37df964b 100644
--- a/src/ipcpd/shim-eth-llc/main.c
+++ b/src/ipcpd/shim-eth-llc/main.c
@@ -20,9 +20,19 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
+
+
+#ifdef __APPLE__
+#define _BSD_SOURCE
+#define _DARWIN_C_SOURCE
+#else
+#define _POSIX_C_SOURCE 200112L
+#endif
+
+#include "config.h"
+
 #define OUROBOROS_PREFIX "ipcpd/shim-eth-llc"
 
-#include <ouroboros/config.h>
 #include <ouroboros/hash.h>
 #include <ouroboros/errno.h>
 #include <ouroboros/list.h>
@@ -35,6 +45,7 @@
 #include <ouroboros/time_utils.h>
 
 #include "ipcp.h"
+#include "shim-data.h"
 #include "shim_eth_llc_messages.pb-c.h"
 
 #include <signal.h>
@@ -78,7 +89,6 @@
 #include <net/bpf.h>
 #endif
 
-#define THIS_TYPE                 IPCP_SHIM_ETH_LLC
 #define MGMT_SAP                  0x01
 #define MAC_SIZE                  6
 #define LLC_HEADER_SIZE           3
@@ -117,6 +127,8 @@ struct mgmt_frame {
 };
 
 struct {
+        struct shim_data * shim_data;
+
 #if defined(HAVE_NETMAP)
         struct nm_desc *   nmd;
         uint8_t            hw_addr[MAC_SIZE];
@@ -125,7 +137,7 @@ struct {
 #elif defined(HAVE_BPF)
         int                bpf;
         uint8_t            hw_addr[MAC_SIZE];
-#elif defined __linux__
+#elif defined HAVE_RAW_SOCKETS
         int                s_fd;
         struct sockaddr_ll device;
 #endif /* HAVE_NETMAP */
@@ -154,7 +166,7 @@ static int eth_llc_data_init(void)
         int                ret = -ENOMEM;
         pthread_condattr_t cattr;
 
-        eth_llc_data.fd_to_ef = malloc(sizeof(struct ef) * IRMD_MAX_FLOWS);
+        eth_llc_data.fd_to_ef = malloc(sizeof(struct ef) * SYS_MAX_FLOWS);
         if (eth_llc_data.fd_to_ef == NULL)
                 goto fail_fd_to_ef;
 
@@ -177,12 +189,16 @@ static int eth_llc_data_init(void)
         for (i = 0; i < MAX_SAPS; ++i)
                 eth_llc_data.ef_to_fd[i] = -1;
 
-        for (i = 0; i < IRMD_MAX_FLOWS; ++i) {
+        for (i = 0; i < SYS_MAX_FLOWS; ++i) {
                 eth_llc_data.fd_to_ef[i].sap   = -1;
                 eth_llc_data.fd_to_ef[i].r_sap = -1;
                 memset(&eth_llc_data.fd_to_ef[i].r_addr, 0, MAC_SIZE);
         }
 
+        eth_llc_data.shim_data = shim_data_create();
+        if (eth_llc_data.shim_data == NULL)
+                goto fail_shim_data;
+
         ret = -1;
 
         if (pthread_rwlock_init(&eth_llc_data.flows_lock, NULL))
@@ -206,6 +222,7 @@ static int eth_llc_data_init(void)
         list_head_init(&eth_llc_data.mgmt_frames);
 
         return 0;
+
  fail_mgmt_cond:
         pthread_condattr_destroy(&cattr);
  fail_condattr:
@@ -213,6 +230,8 @@ static int eth_llc_data_init(void)
  fail_mgmt_lock:
         pthread_rwlock_destroy(&eth_llc_data.flows_lock);
  fail_flows_lock:
+        shim_data_destroy(eth_llc_data.shim_data);
+ fail_shim_data:
         fqueue_destroy(eth_llc_data.fq);
  fail_fq:
         flow_set_destroy(eth_llc_data.np1_flows);
@@ -232,12 +251,13 @@ void eth_llc_data_fini(void)
         nm_close(eth_llc_data.nmd);
 #elif defined(HAVE_BPF)
         close(eth_llc_data.bpf);
-#elif defined(__linux__)
+#elif defined(HAVE_RAW_SOCKETS)
         close(eth_llc_data.s_fd);
 #endif
         pthread_cond_destroy(&eth_llc_data.mgmt_cond);
         pthread_mutex_destroy(&eth_llc_data.mgmt_lock);
         pthread_rwlock_destroy(&eth_llc_data.flows_lock);
+        shim_data_destroy(eth_llc_data.shim_data);
         fqueue_destroy(eth_llc_data.fq);
         flow_set_destroy(eth_llc_data.np1_flows);
         bmp_destroy(eth_llc_data.saps);
@@ -280,7 +300,7 @@ static int eth_llc_ipcp_send_frame(const uint8_t * dst_addr,
         memcpy(llc_frame->src_hwaddr,
 #if defined(HAVE_NETMAP) || defined(HAVE_BPF)
                eth_llc_data.hw_addr,
-#elif defined(__linux__)
+#elif defined(HAVE_RAW_SOCKETS)
                eth_llc_data.device.sll_addr,
 #endif /* HAVE_NETMAP */
                MAC_SIZE);
@@ -306,7 +326,7 @@ static int eth_llc_ipcp_send_frame(const uint8_t * dst_addr,
                 return -1;
         }
 
-#elif defined(__linux__)
+#elif defined(HAVE_RAW_SOCKETS)
         if (sendto(eth_llc_data.s_fd,
                    frame,
                    frame_len,
@@ -475,7 +495,7 @@ static int eth_llc_ipcp_name_query_req(const uint8_t * hash,
 {
         shim_eth_llc_msg_t msg = SHIM_ETH_LLC_MSG__INIT;
 
-        if (shim_data_reg_has(ipcpi.shim_data, hash)) {
+        if (shim_data_reg_has(eth_llc_data.shim_data, hash)) {
                 msg.code      = SHIM_ETH_LLC_MSG_CODE__NAME_QUERY_REPLY;
                 msg.has_hash  = true;
                 msg.hash.len  = ipcp_dir_hash_len();
@@ -495,11 +515,11 @@ static int eth_llc_ipcp_name_query_reply(const uint8_t * hash,
 
         memcpy(&address, r_addr, MAC_SIZE);
 
-        shim_data_dir_add_entry(ipcpi.shim_data, hash, address);
+        shim_data_dir_add_entry(eth_llc_data.shim_data, hash, address);
 
-        pthread_mutex_lock(&ipcpi.shim_data->dir_queries_lock);
+        pthread_mutex_lock(&eth_llc_data.shim_data->dir_queries_lock);
 
-        list_for_each(pos, &ipcpi.shim_data->dir_queries) {
+        list_for_each(pos, &eth_llc_data.shim_data->dir_queries) {
                 struct dir_query * e =
                         list_entry(pos, struct dir_query, next);
                 if (memcmp(e->hash, hash, ipcp_dir_hash_len()) == 0) {
@@ -507,7 +527,7 @@ static int eth_llc_ipcp_name_query_reply(const uint8_t * hash,
                 }
         }
 
-        pthread_mutex_unlock(&ipcpi.shim_data->dir_queries_lock);
+        pthread_mutex_unlock(&eth_llc_data.shim_data->dir_queries_lock);
 
         return 0;
 }
@@ -526,7 +546,7 @@ static int eth_llc_ipcp_mgmt_frame(const uint8_t * buf,
 
         switch (msg->code) {
         case SHIM_ETH_LLC_MSG_CODE__FLOW_REQ:
-                if (shim_data_reg_has(ipcpi.shim_data, msg->hash.data)) {
+                if (shim_data_reg_has(eth_llc_data.shim_data, msg->hash.data)) {
                         eth_llc_ipcp_sap_req(msg->ssap,
                                              r_addr,
                                              msg->hash.data,
@@ -614,7 +634,7 @@ static void * eth_llc_ipcp_sdu_reader(void * o)
         struct nm_pkthdr       hdr;
 #elif defined(HAVE_BPF)
         uint8_t                buf[BPF_BLEN];
-#elif defined(__linux__)
+#elif defined(HAVE_RAW_SOCKETS)
         uint8_t                buf[ETH_FRAME_SIZE];
 #endif
         int                    frame_len = 0;
@@ -641,7 +661,7 @@ static void * eth_llc_ipcp_sdu_reader(void * o)
                 }
 #elif defined(HAVE_BPF)
                 frame_len = read(eth_llc_data.bpf, buf, BPF_BLEN);
-#elif defined(__linux__)
+#elif defined(HAVE_RAW_SOCKETS)
                 frame_len = recv(eth_llc_data.s_fd, buf,
                                  SHIM_ETH_LLC_MAX_SDU_SIZE, 0);
 #endif
@@ -659,7 +679,7 @@ static void * eth_llc_ipcp_sdu_reader(void * o)
 #if !defined(HAVE_BPF)
     #if defined(HAVE_NETMAP)
                 if (memcmp(eth_llc_data.hw_addr,
-    #elif defined(__linux__)
+    #elif defined(HAVE_RAW_SOCKETS)
                 if (memcmp(eth_llc_data.device.sll_addr,
     #endif /* HAVE_NETMAP */
                            llc_frame->dst_hwaddr,
@@ -792,7 +812,7 @@ static int eth_llc_ipcp_bootstrap(const struct ipcp_config * conf)
         int              disable = 0;
         int              blen;
         struct timeval   tv = {0, EVENT_WAIT_TIMEOUT};
-#elif defined(__linux__)
+#elif defined(HAVE_RAW_SOCKETS)
         struct timeval   tv = {0, EVENT_WAIT_TIMEOUT};
 #endif /* HAVE_NETMAP */
 
@@ -825,8 +845,10 @@ static int eth_llc_ipcp_bootstrap(const struct ipcp_config * conf)
                 log_dbg("Interface %s found.", conf->if_name);
 
     #if defined(HAVE_NETMAP) || defined(HAVE_BPF)
-                memcpy(eth_llc_data.hw_addr, LLADDR((struct sockaddr_dl *)(ifa)->ifa_addr), MAC_SIZE);
-    #else
+                memcpy(eth_llc_data.hw_addr,
+                       LLADDR((struct sockaddr_dl *) (ifa)->ifa_addr),
+                       MAC_SIZE);
+    #elif defined (HAVE_RAW_SOCKETS)
                 memcpy(&ifr.ifr_addr, ifa->ifa_addr, sizeof(*ifa->ifa_addr));
     #endif
                 break;
@@ -927,7 +949,7 @@ static int eth_llc_ipcp_bootstrap(const struct ipcp_config * conf)
         }
 
         log_info("Using Berkeley Packet Filter.");
-#elif defined(__linux__)
+#elif defined(HAVE_RAW_SOCKETS)
         memset(&(eth_llc_data.device), 0, sizeof(eth_llc_data.device));
         eth_llc_data.device.sll_ifindex  = idx;
         eth_llc_data.device.sll_family   = AF_PACKET;
@@ -991,7 +1013,7 @@ static int eth_llc_ipcp_reg(const uint8_t * hash)
                 return -ENOMEM;
         }
 
-        if (shim_data_reg_add_entry(ipcpi.shim_data, hash_dup)) {
+        if (shim_data_reg_add_entry(eth_llc_data.shim_data, hash_dup)) {
                 log_err("Failed to add " HASH_FMT " to local registry.",
                         HASH_VAL(hash));
                 free(hash_dup);
@@ -1005,7 +1027,7 @@ static int eth_llc_ipcp_reg(const uint8_t * hash)
 
 static int eth_llc_ipcp_unreg(const uint8_t * hash)
 {
-        shim_data_reg_del_entry(ipcpi.shim_data, hash);
+        shim_data_reg_del_entry(eth_llc_data.shim_data, hash);
 
         return 0;
 }
@@ -1019,7 +1041,7 @@ static int eth_llc_ipcp_query(const uint8_t * hash)
         struct dir_query * query;
         int                ret;
 
-        if (shim_data_dir_has(ipcpi.shim_data, hash))
+        if (shim_data_dir_has(eth_llc_data.shim_data, hash))
                 return 0;
 
         msg.code      = SHIM_ETH_LLC_MSG_CODE__NAME_QUERY_REQ;
@@ -1033,18 +1055,18 @@ static int eth_llc_ipcp_query(const uint8_t * hash)
         if (query == NULL)
                 return -1;
 
-        pthread_mutex_lock(&ipcpi.shim_data->dir_queries_lock);
-        list_add(&query->next, &ipcpi.shim_data->dir_queries);
-        pthread_mutex_unlock(&ipcpi.shim_data->dir_queries_lock);
+        pthread_mutex_lock(&eth_llc_data.shim_data->dir_queries_lock);
+        list_add(&query->next, &eth_llc_data.shim_data->dir_queries);
+        pthread_mutex_unlock(&eth_llc_data.shim_data->dir_queries_lock);
 
         eth_llc_ipcp_send_mgmt_frame(&msg, r_addr);
 
         ret = shim_data_dir_query_wait(query, &timeout);
 
-        pthread_mutex_lock(&ipcpi.shim_data->dir_queries_lock);
+        pthread_mutex_lock(&eth_llc_data.shim_data->dir_queries_lock);
         list_del(&query->next);
         shim_data_dir_query_destroy(query);
-        pthread_mutex_unlock(&ipcpi.shim_data->dir_queries_lock);
+        pthread_mutex_unlock(&eth_llc_data.shim_data->dir_queries_lock);
 
         return ret;
 }
@@ -1066,11 +1088,11 @@ static int eth_llc_ipcp_flow_alloc(int             fd,
                 return -1;
         }
 
-        if (!shim_data_dir_has(ipcpi.shim_data, hash)) {
+        if (!shim_data_dir_has(eth_llc_data.shim_data, hash)) {
                 log_err("Destination unreachable.");
                 return -1;
         }
-        addr = shim_data_dir_get_addr(ipcpi.shim_data, hash);
+        addr = shim_data_dir_get_addr(eth_llc_data.shim_data, hash);
 
         pthread_rwlock_wrlock(&eth_llc_data.flows_lock);
 
diff --git a/src/ipcpd/shim-udp/CMakeLists.txt b/src/ipcpd/shim-udp/CMakeLists.txt
index 3ff8dd5f..eff3f5d0 100644
--- a/src/ipcpd/shim-udp/CMakeLists.txt
+++ b/src/ipcpd/shim-udp/CMakeLists.txt
@@ -15,18 +15,14 @@ include_directories(${CMAKE_BINARY_DIR}/include)
 protobuf_generate_c(SHIM_UDP_PROTO_SRCS SHIM_UDP_PROTO_HDRS
   shim_udp_messages.proto)
 
-configure_file(
-  "${CMAKE_CURRENT_SOURCE_DIR}/shim_udp_config.h.in"
-  "${CMAKE_CURRENT_BINARY_DIR}/shim_udp_config.h")
-
-set(IPCP_SHIM_UDP_TARGET ipcpd-shim-udp CACHE STRING "IPCP_SHIM_UDP_TARGET")
+set(IPCP_SHIM_UDP_TARGET ipcpd-shim-udp CACHE INTERNAL "")
 
 set(SHIM_UDP_SOURCES
   # Add source files here
   ${CMAKE_CURRENT_SOURCE_DIR}/main.c)
 
 add_executable(ipcpd-shim-udp ${SHIM_UDP_SOURCES} ${IPCP_SOURCES}
-  ${SHIM_UDP_PROTO_SRCS} "${CMAKE_CURRENT_BINARY_DIR}/shim_udp_config.h")
+  ${SHIM_UDP_PROTO_SRCS})
 target_link_libraries(ipcpd-shim-udp LINK_PUBLIC ouroboros
   ${PROTOBUF_C_LIBRARY})
 
@@ -40,10 +36,12 @@ find_program(NSLOOKUP_EXECUTABLE
   NAMES nslookup
   DOC "The nslookup tool that resolves DNS names")
 
+mark_as_advanced(NSLOOKUP_EXECUTABLE NSUPDATE_EXECUTABLE)
+
 include(AddCompileFlags)
-if (${NSUPDATE_EXECUTABLE} STREQUAL "NSUPDATE_EXECUTABLE-NOTFOUND")
+if (NOT NSUPDATE_EXECUTABLE)
   message(STATUS "Could not find nsupdate. Disabling DDNS functionality.")
-elseif (${NSLOOKUP_EXECUTABLE} STREQUAL "NSLOOKUP_EXECUTABLE-NOTFOUND")
+elseif (NOT NSLOOKUP_EXECUTABLE)
   message(STATUS "Could not find nslookup. Disabling DNS lookups.")
 else ()
   message(STATUS "Found nsupdate: ${NSUPDATE_EXECUTABLE}")
@@ -56,6 +54,3 @@ if (CMAKE_BUILD_TYPE MATCHES Debug)
 endif (CMAKE_BUILD_TYPE MATCHES Debug)
 
 install(TARGETS ipcpd-shim-udp RUNTIME DESTINATION sbin)
-
-# Enable once ipcp-shim-udp has tests
-# add_subdirectory(tests)
diff --git a/src/ipcpd/shim-udp/main.c b/src/ipcpd/shim-udp/main.c
index 195e3bc0..55fe19a6 100644
--- a/src/ipcpd/shim-udp/main.c
+++ b/src/ipcpd/shim-udp/main.c
@@ -20,9 +20,12 @@
  * Foundation, Inc., http://www.fsf.org/about/contact/.
  */
 
+#define _POSIX_C_SOURCE 200112L
+
+#include "config.h"
+
 #define OUROBOROS_PREFIX "ipcpd/shim-udp"
 
-#include <ouroboros/config.h>
 #include <ouroboros/hash.h>
 #include <ouroboros/list.h>
 #include <ouroboros/utils.h>
@@ -32,9 +35,9 @@
 #include <ouroboros/errno.h>
 #include <ouroboros/logs.h>
 
-#include "shim_udp_messages.pb-c.h"
 #include "ipcp.h"
-#include "shim_udp_config.h"
+#include "shim-data.h"
+#include "shim_udp_messages.pb-c.h"
 
 #include <string.h>
 #include <sys/socket.h>
@@ -68,6 +71,8 @@ struct uf {
 };
 
 struct {
+        struct shim_data * shim_data;
+
         uint32_t           ip_addr;
         uint32_t           dns_addr;
         /* listen server */
@@ -79,7 +84,7 @@ struct {
         fd_set             flow_fd_s;
         /* bidir mappings of (n - 1) file descriptor to (n) flow descriptor */
         int                uf_to_fd[FD_SETSIZE];
-        struct uf          fd_to_uf[IRMD_MAX_FLOWS];
+        struct uf          fd_to_uf[SYS_MAX_FLOWS];
         pthread_rwlock_t   flows_lock;
 
         pthread_t          sduloop;
@@ -98,7 +103,7 @@ static int udp_data_init(void)
         for (i = 0; i < FD_SETSIZE; ++i)
                 udp_data.uf_to_fd[i] = -1;
 
-        for (i = 0; i < IRMD_MAX_FLOWS; ++i) {
+        for (i = 0; i < SYS_MAX_FLOWS; ++i) {
                 udp_data.fd_to_uf[i].skfd = -1;
                 udp_data.fd_to_uf[i].udp = -1;
         }
@@ -115,6 +120,13 @@ static int udp_data_init(void)
                 return -ENOMEM;
         }
 
+        udp_data.shim_data = shim_data_create();
+        if (udp_data.shim_data == NULL) {
+                fqueue_destroy(udp_data.fq);
+                flow_set_destroy(udp_data.np1_flows);
+                return -ENOMEM;
+        }
+
         pthread_rwlock_init(&udp_data.flows_lock, NULL);
         pthread_cond_init(&udp_data.fd_set_cond, NULL);
         pthread_mutex_init(&udp_data.fd_set_lock, NULL);
@@ -127,6 +139,8 @@ static void udp_data_fini(void)
         flow_set_destroy(udp_data.np1_flows);
         fqueue_destroy(udp_data.fq);
 
+        shim_data_destroy(udp_data.shim_data);
+
         pthread_rwlock_destroy(&udp_data.flows_lock);
         pthread_mutex_destroy(&udp_data.fd_set_lock);
         pthread_cond_destroy(&udp_data.fd_set_cond);
@@ -322,7 +336,7 @@ static int udp_port_to_fd(int udp_port)
 {
         int i;
 
-        for (i = 0; i < IRMD_MAX_FLOWS; ++i)
+        for (i = 0; i < SYS_MAX_FLOWS; ++i)
                 if (udp_data.fd_to_uf[i].udp == udp_port)
                         return i;
 
@@ -765,7 +779,7 @@ static int ipcp_udp_reg(const uint8_t * hash)
                 return -ENOMEM;
         }
 
-        if (shim_data_reg_add_entry(ipcpi.shim_data, hash_dup)) {
+        if (shim_data_reg_add_entry(udp_data.shim_data, hash_dup)) {
                 log_err("Failed to add " HASH_FMT " to local registry.",
                         HASH_VAL(hash));
                 free(hash_dup);
@@ -794,7 +808,7 @@ static int ipcp_udp_reg(const uint8_t * hash)
                         dnsstr, hashstr, DNS_TTL, ipstr);
 
                 if (ddns_send(cmd)) {
-                        shim_data_reg_del_entry(ipcpi.shim_data, hash_dup);
+                        shim_data_reg_del_entry(udp_data.shim_data, hash_dup);
                         return -1;
                 }
         }
@@ -835,7 +849,7 @@ static int ipcp_udp_unreg(const uint8_t * hash)
         }
 #endif
 
-        shim_data_reg_del_entry(ipcpi.shim_data, hash);
+        shim_data_reg_del_entry(udp_data.shim_data, hash);
 
         log_dbg("Unregistered " HASH_FMT ".", HASH_VAL(hash));
 
@@ -855,7 +869,7 @@ static int ipcp_udp_query(const uint8_t * hash)
 
         ipcp_hash_str(hashstr, hash);
 
-        if (shim_data_dir_has(ipcpi.shim_data, hash))
+        if (shim_data_dir_has(udp_data.shim_data, hash))
                 return 0;
 
 #ifdef CONFIG_OUROBOROS_ENABLE_DNS
@@ -880,7 +894,7 @@ static int ipcp_udp_query(const uint8_t * hash)
         }
 #endif
 
-        if (shim_data_dir_add_entry(ipcpi.shim_data, hash, ip_addr)) {
+        if (shim_data_dir_add_entry(udp_data.shim_data, hash, ip_addr)) {
                 log_err("Failed to add directory entry.");
                 return -1;
         }
@@ -926,12 +940,12 @@ static int ipcp_udp_flow_alloc(int             fd,
                 return -1;
         }
 
-        if (!shim_data_dir_has(ipcpi.shim_data, dst)) {
+        if (!shim_data_dir_has(udp_data.shim_data, dst)) {
                 log_dbg("Could not resolve destination.");
                 close(skfd);
                 return -1;
         }
-        ip_addr = (uint32_t) shim_data_dir_get_addr(ipcpi.shim_data, dst);
+        ip_addr = (uint32_t) shim_data_dir_get_addr(udp_data.shim_data, dst);
 
         /* connect to server (store the remote IP address in the fd) */
         memset((char *) &r_saddr, 0, sizeof(r_saddr));
diff --git a/src/ipcpd/shim-udp/shim_udp_config.h.in b/src/ipcpd/shim-udp/shim_udp_config.h.in
deleted file mode 100644
index c32210e9..00000000
--- a/src/ipcpd/shim-udp/shim_udp_config.h.in
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Ouroboros - Copyright (C) 2016 - 2017
- *
- * Configuration information specific for the shim UDP
- *
- *    Sander Vrijders <[email protected]>
- *
- * 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_SHIM_UDP_CONFIG
-#define OUROBOROS_SHIM_UDP_CONFIG
-
-#define NSUPDATE_EXEC "@NSUPDATE_EXECUTABLE@"
-#define NSLOOKUP_EXEC "@NSLOOKUP_EXECUTABLE@"
-
-#endif
diff --git a/src/ipcpd/shim-udp/tests/CMakeLists.txt b/src/ipcpd/shim-udp/tests/CMakeLists.txt
deleted file mode 100644
index bdd7defb..00000000
--- a/src/ipcpd/shim-udp/tests/CMakeLists.txt
+++ /dev/null
@@ -1,33 +0,0 @@
-get_filename_component(PARENT_SOURCE_PATH ${CMAKE_CURRENT_SOURCE_DIR} DIRECTORY)
-get_filename_component(PARENT_BINARY_PATH ${CMAKE_CURRENT_BINARY_DIR} DIRECTORY)
-get_filename_component(PARENT_DIR ${PARENT_SOURCE_PATH} NAME)
-
-include_directories(${CMAKE_CURRENT_SOURCE_DIR})
-include_directories(${CMAKE_CURRENT_BINARY_DIR})
-
-include_directories(${PARENT_SOURCE_PATH})
-include_directories(${PARENT_BINARY_PATH})
-
-include_directories(${CMAKE_SOURCE_DIR}/include)
-include_directories(${CMAKE_BINARY_DIR}/include)
-
-create_test_sourcelist(${PARENT_DIR}_tests test_suite.c
-                       # Add new tests here
-                       shim_udp_test.c
-)
-
-add_executable(${PARENT_DIR}_test EXCLUDE_FROM_ALL ${IPCP_SOURCES} ${${PARENT_DIR}_tests})
-target_link_libraries(${PARENT_DIR}_test ouroboros)
-
-include(MacroAddCompileFlags)
-MACRO_ADD_COMPILE_FLAGS(${PARENT_DIR}_test -DMAKE_CHECK)
-
-add_dependencies(check ${PARENT_DIR}_test)
-
-set(tests_to_run ${${PARENT_DIR}_tests})
-remove(tests_to_run test_suite.c)
-
-foreach(test ${tests_to_run})
-  get_filename_component(test_name ${test} NAME_WE)
-  add_test(${test_name} ${C_TEST_PATH}/${PARENT_DIR}_test ${test_name})
-endforeach(test)
diff --git a/src/ipcpd/shim-udp/tests/shim_udp_test.c b/src/ipcpd/shim-udp/tests/shim_udp_test.c
deleted file mode 100644
index 88669a9e..00000000
--- a/src/ipcpd/shim-udp/tests/shim_udp_test.c
+++ /dev/null
@@ -1,100 +0,0 @@
-/*
- * Ouroboros - Copyright (C) 2016 - 2017
- *
- * Test of the Shim UDP IPCP Daemon
- *
- *    Dimitri Staessens <[email protected]>
- *    Sander Vrijders   <[email protected]>
- *
- * 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/.
- */
-
-#include <ouroboros/config.h>
-#include <ouroboros/ipcp.h>
-#include <ouroboros/utils.h>
-#include <ouroboros/shm_du_map.h>
-#include <sys/types.h>
-#include <stdlib.h>
-#include "main.c"
-
-#include <ouroboros/logs.h>
-
-struct ipcp * _ipcp;
-
-int shim_udp_test(int argc, char ** argv)
-{
-        struct shm_du_map * dum;
-        char * ipcp_name = "test-shim-ipcp";
-        int i = 0;
-
-        char bogus[16];
-        memset(&bogus, 0, 16);
-
-        struct ipcp_config conf;
-        memset(&conf, 0, sizeof conf);
-        conf.dif_name = strdup("test-dif");
-        conf.type = IPCP_SHIM_UDP;
-        conf.ip_addr = 0;
-
-        dum = shm_du_map_create();
-        if (dum == NULL) {
-                log_err("Failed to create shared memory.");
-                exit(1);
-        }
-
-        _ipcp = ipcp_udp_create(ipcp_name);
-        if (_ipcp == NULL) {
-                log_err("Could not instantiate shim IPCP.");
-                shm_du_map_destroy(dum);
-                exit(1);
-        }
-
-        if (ipcp_udp_bootstrap(&conf)) {
-                log_err("Could not bootstrap.");
-        }
-
-        if (ipcp_udp_name_reg("bogus name")) {
-                log_err("Failed to register application.");
-                shm_du_map_destroy(dum);
-                exit(1);
-        }
-
-        if (ipcp_udp_name_unreg("bogus name")) {
-                log_err("Failed to unregister application.");
-                shm_du_map_destroy(dum);
-                exit(1);
-        }
-
-        for (i = 0; i  < 1000; ++i) {
-                sprintf(bogus, "bogus name %4d", i);
-                if (ipcp_udp_name_reg(bogus)) {
-                         log_err("Failed to register application %s.", bogus);
-                         shm_du_map_destroy(dum);
-                         exit(1);
-                }
-        }
-
-        for (i = 0; i  < 1000; ++i) {
-                sprintf(bogus, "bogus name %4d", i);
-                if(ipcp_udp_name_unreg(bogus)) {
-                         log_err("Failed to unregister application %s.", bogus);
-                         shm_du_map_destroy(dum);
-                         exit(1);
-                }
-        }
-
-        shm_du_map_destroy(dum);
-
-        exit(0);
-}