ipcpd: normal: Allow initiating enrollment

This will add more functionality for enrolling two normal IPCPs with
each other. Some bugs were fixed in CDAP. Now on enrolling, an IPCP
will send a START message to the other IPCP. Next step is syncing the
RIBs.

1 files changed, 26 insertions, 16 deletions

diff --git a/src/ipcpd/normal/fmgr.c b/src/ipcpd/normal/fmgr.c
index 4b3c49e6..a539b289 100644
--- a/src/ipcpd/normal/fmgr.c
+++ b/src/ipcpd/normal/fmgr.c
@@ -35,6 +35,9 @@
 #include "fmgr.h"
 #include "ribmgr.h"
 #include "frct.h"
+#include "ipcp.h"
+
+extern struct ipcp * _ipcp;
 
 struct n_1_flow {
         int fd;
@@ -77,28 +80,37 @@ static void * fmgr_listen(void * o)
         int fd;
         char * ae_name;
 
-        /* FIXME: Only start to listen once we are enrolled */
+        /* FIXME: Avoid busy wait and react to pthread_cond_t */
+        pthread_rwlock_rdlock(&_ipcp->state_lock);
+        while (_ipcp->state != IPCP_ENROLLED ||
+               _ipcp->state != IPCP_SHUTDOWN) {
+                pthread_rwlock_unlock(&_ipcp->state_lock);
+                sched_yield();
+                pthread_rwlock_rdlock(&_ipcp->state_lock);
+        }
 
-        while (true) {
+        while (_ipcp->state != IPCP_SHUTDOWN) {
+                pthread_rwlock_unlock(&_ipcp->state_lock);
                 fd = flow_accept(&ae_name);
                 if (fd < 0) {
                         LOG_ERR("Failed to accept flow.");
+                        pthread_rwlock_rdlock(&_ipcp->state_lock);
                         continue;
                 }
 
-                LOG_DBG("New flow alloc request for AE %s", ae_name);
-
                 if (!(strcmp(ae_name, MGMT_AE) == 0 ||
                       strcmp(ae_name, DT_AE) == 0)) {
                         if (flow_alloc_resp(fd, -1))
                                 LOG_ERR("Failed to reply to flow allocation.");
                         flow_dealloc(fd);
+                        pthread_rwlock_rdlock(&_ipcp->state_lock);
                         continue;
                 }
 
                 if (flow_alloc_resp(fd, 0)) {
                         LOG_ERR("Failed to reply to flow allocation.");
                         flow_dealloc(fd);
+                        pthread_rwlock_rdlock(&_ipcp->state_lock);
                         continue;
                 }
 
@@ -106,9 +118,10 @@ static void * fmgr_listen(void * o)
                         ae_name);
 
                 if (strcmp(ae_name, MGMT_AE) == 0) {
-                        if (ribmgr_mgmt_flow(fd)) {
+                        if (ribmgr_add_flow(fd)) {
                                 LOG_ERR("Failed to hand fd to RIB.");
                                 flow_dealloc(fd);
+                                pthread_rwlock_rdlock(&_ipcp->state_lock);
                                 continue;
                         }
                 }
@@ -117,6 +130,7 @@ static void * fmgr_listen(void * o)
                         if (frct_dt_flow(fd)) {
                                 LOG_ERR("Failed to hand fd to FRCT.");
                                 flow_dealloc(fd);
+                                pthread_rwlock_rdlock(&_ipcp->state_lock);
                                 continue;
                         }
                 }
@@ -124,8 +138,11 @@ static void * fmgr_listen(void * o)
                 if (add_n_1_fd(fd, ae_name)) {
                         LOG_ERR("Failed to add file descriptor to list.");
                         flow_dealloc(fd);
+                        pthread_rwlock_rdlock(&_ipcp->state_lock);
                         continue;
                 }
+
+                pthread_rwlock_rdlock(&_ipcp->state_lock);
         }
 
         return (void *) 0;
@@ -134,9 +151,8 @@ static void * fmgr_listen(void * o)
 int fmgr_init()
 {
         fmgr = malloc(sizeof(*fmgr));
-        if (fmgr == NULL) {
+        if (fmgr == NULL)
                 return -1;
-        }
 
         INIT_LIST_HEAD(&fmgr->n_1_flows);
 
@@ -164,7 +180,8 @@ int fmgr_fini()
                         list_entry(pos, struct n_1_flow, next);
                 if (e->ae_name != NULL)
                         free(e->ae_name);
-                flow_dealloc(e->fd);
+                if (ribmgr_remove_flow(e->fd))
+                    LOG_ERR("Failed to remove management flow.");
         }
 
         free(fmgr);
@@ -191,7 +208,7 @@ int fmgr_mgmt_flow(char * dst_name)
                 return -1;
         }
 
-        if (ribmgr_mgmt_flow(fd)) {
+        if (ribmgr_add_flow(fd)) {
                 LOG_ERR("Failed to hand file descriptor to RIB manager");
                 flow_dealloc(fd);
                 return -1;
@@ -239,10 +256,3 @@ int fmgr_flow_dealloc(int port_id)
 
         return -1;
 }
-
-int fmgr_flow_msg()
-{
-        LOG_MISSING;
-
-        return -1;
-}