lib: client-side flow allocation

flow allocation now propagates on the client side up to the IPCP.
added UNKNOWN_AP and UNKNOWN_AE definitions to dev.h

5 files changed, 52 insertions, 13 deletions

diff --git a/include/ouroboros/dev.h b/include/ouroboros/dev.h
index b2507fbf..414273ef 100644
--- a/include/ouroboros/dev.h
+++ b/include/ouroboros/dev.h
@@ -25,6 +25,9 @@
 
 #include <ouroboros/common.h>
 
+#define UNKNOWN_AP "__UNKNOWN_AP__"
+#define UNKNOWN_AE "__UNKNOWN_AE__"
+
 /* Returns file descriptor */
 int     ap_reg(char * ap_name, char ** difs, size_t difs_size);
 int     ap_unreg(char * ap_name, char ** difs, size_t difs_size);
diff --git a/src/ipcpd/ipcp.h b/src/ipcpd/ipcp.h
index f640d78b..9decac8b 100644
--- a/src/ipcpd/ipcp.h
+++ b/src/ipcpd/ipcp.h
@@ -26,9 +26,6 @@
 #include "ipcp-ops.h"
 #include "ipcp-data.h"
 
-/* needed to run over shim DIFs */
-#define ANONYMOUS_AP "__ANONYMOUS__"
-
 enum ipcp_state {
         IPCP_INIT = 0,
         IPCP_ENROLLING,
diff --git a/src/ipcpd/shim-udp/main.c b/src/ipcpd/shim-udp/main.c
index c07d77c2..71c414ef 100644
--- a/src/ipcpd/shim-udp/main.c
+++ b/src/ipcpd/shim-udp/main.c
@@ -29,6 +29,7 @@
 #include <ouroboros/ipcp.h>
 #include <ouroboros/dif_config.h>
 #include <ouroboros/sockets.h>
+#include <ouroboros/dev.h>
 
 #define OUROBOROS_PREFIX "ipcpd/shim-udp"
 
@@ -192,7 +193,7 @@ static void * ipcp_udp_listener()
                 /* reply to IRM */
 
                 flow->flow.port_id = ipcp_flow_req_arr(getpid(), buf,
-                                                       ANONYMOUS_AP, "");
+                                                       UNKNOWN_AP, "");
                 if (flow->flow.port_id < 0) {
                         LOG_ERR("Could not get port id from IRMd");
                         close(flow->fd);
@@ -270,6 +271,7 @@ int ipcp_udp_bootstrap(struct dif_config * conf)
         char dnsstr[INET_ADDRSTRLEN];
         pthread_t handler;
         pthread_t sdu_reader;
+        int enable = 1;
 
         if (conf->type != THIS_TYPE) {
                 LOG_ERR("Config doesn't match IPCP type.");
@@ -305,6 +307,14 @@ int ipcp_udp_bootstrap(struct dif_config * conf)
                 return -1;
         }
 
+        if (setsockopt(shim_data(_ipcp)->s_fd,
+                       SOL_SOCKET,
+                        SO_REUSEADDR,
+                        &enable,
+                       sizeof(int)) < 0) {
+                LOG_DBGF("Setsockopt(SO_REUSEADDR) failed.");
+        }
+
         shim_data(_ipcp)->s_saddr.sin_family      = AF_INET;
         shim_data(_ipcp)->s_saddr.sin_addr.s_addr = conf->ip_addr;
         shim_data(_ipcp)->s_saddr.sin_port        = LISTEN_PORT;
@@ -419,6 +429,7 @@ int ipcp_udp_flow_alloc(uint32_t          port_id,
 
         h = gethostbyname(dst_name);
         if (h == NULL) {
+                LOG_DBGF("Could not resolve %s.", dst_name);
                 close(flow->fd);
                 free(flow);
                 return -1;
diff --git a/src/irmd/main.c b/src/irmd/main.c
index 31dabebb..67254feb 100644
--- a/src/irmd/main.c
+++ b/src/irmd/main.c
@@ -123,6 +123,20 @@ static instance_name_t * get_ipcp_by_dif_name(char * dif_name)
         return NULL;
 }
 
+/* FIXME: this just returns the first IPCP for now */
+static instance_name_t * get_ipcp_by_dst_name(char * dst_name)
+{
+        struct list_head * pos = NULL;
+
+        list_for_each(pos, &instance->ipcps) {
+                struct ipcp_entry * e =
+                        list_entry(pos, struct ipcp_entry, next);
+                return e->api;
+        }
+
+        return NULL;
+}
+
 static struct reg_name_entry * reg_name_entry_create()
 {
         struct reg_name_entry * e = malloc(sizeof(*e));
@@ -549,6 +563,7 @@ static int ap_unreg(char *  ap_name,
 
 
 static int flow_accept(int fd,
+                       pid_t pid,
                        char * ap_name,
                        char * ae_name)
 {
@@ -558,17 +573,27 @@ static int flow_accept(int fd,
 static int flow_alloc_resp(int fd,
                            int result)
 {
-
         return -1;
 }
 
-static int flow_alloc(char * dst_ap_name,
+static int flow_alloc(char * dst_name,
                       char * src_ap_name,
                       char * src_ae_name,
                       struct qos_spec * qos,
                       int oflags)
 {
-        return -1;
+        int   port_id = 0;
+        pid_t pid     = get_ipcp_by_dst_name(dst_name)->id;
+
+        LOG_DBG("flow alloc received from %s-%s to %s.",
+                 src_ap_name, src_ae_name, dst_name);
+
+        return ipcp_flow_alloc(pid,
+                               port_id,
+                               dst_name,
+                               src_ap_name,
+                               src_ae_name,
+                               qos);
 }
 
 static int flow_alloc_res(int fd)
@@ -588,9 +613,9 @@ static int flow_cntl(int fd,
         return -1;
 }
 
-static int flow_req_arr(uint32_t reg_api_id,
-                        char *   ap_name,
-                        char *   ae_name)
+static int flow_req_arr(char * dst_name,
+                        char * ap_name,
+                        char * ae_name)
 {
         return -1;
 }
@@ -741,6 +766,7 @@ int main()
                 case IRM_MSG_CODE__IRM_FLOW_ACCEPT:
                         ret_msg.has_fd = true;
                         ret_msg.fd = flow_accept(msg->fd,
+                                                 msg->pid,
                                                  ret_msg.ap_name,
                                                  ret_msg.ae_name);
                         break;
@@ -772,7 +798,7 @@ int main()
                         break;
                 case IRM_MSG_CODE__IPCP_FLOW_REQ_ARR:
                         ret_msg.has_port_id = true;
-                        ret_msg.port_id = flow_req_arr(msg->port_id,
+                        ret_msg.port_id = flow_req_arr(msg->dst_name,
                                                        msg->ap_name,
                                                        msg->ae_name);
                         break;
diff --git a/src/lib/dev.c b/src/lib/dev.c
index 60dee701..6d8411c5 100644
--- a/src/lib/dev.c
+++ b/src/lib/dev.c
@@ -177,11 +177,13 @@ int flow_alloc(char * dst_name,
         int fd = 0;
 
         if (dst_name == NULL ||
-            src_ap_name == NULL ||
-            qos == NULL) {
+            src_ap_name == NULL) {
                 return -EINVAL;
         }
 
+        if (src_ae_name == NULL)
+                src_ae_name  = UNKNOWN_AE;
+
         msg.code        = IRM_MSG_CODE__IRM_FLOW_ALLOC;
         msg.dst_name    = dst_name;
         msg.ap_name     = src_ap_name;