lib, ipcp: Revise fast path and flow interfaces

IPCPs can now use ap_init() to initialize the memory. All flows are
accessed using flow descriptors, this greatly simplifies IPCP
development. Reverts the fast path to a single ap_rbuff per process.
Splits lib/ipcp into irmd/ipcp and lib/ipcp-dev.  Adds a lib/shim-dev
holding tailored functions for shims.  Moves the buffer_t to utils.h.
Fixes the shim-eth-llc length field.  Removes the flow from shared.h.

Fixes #4
Fixes #5

1 files changed, 17 insertions, 1 deletions

diff --git a/src/irmd/irm_flow.h b/src/irmd/irm_flow.h
index b7e5a1be..db6598bf 100644
--- a/src/irmd/irm_flow.h
+++ b/src/irmd/irm_flow.h
@@ -24,12 +24,18 @@
 #define OUROBOROS_IRMD_IRM_FLOW_H
 
 #include <ouroboros/list.h>
-#include <ouroboros/shared.h>
 
 #include <sys/types.h>
 #include <pthread.h>
 #include <time.h>
 
+enum flow_state {
+        FLOW_NULL = 0,
+        FLOW_PENDING,
+        FLOW_ALLOCATED,
+        FLOW_DESTROY
+};
+
 struct irm_flow {
         struct list_head next;
 
@@ -46,6 +52,16 @@ struct irm_flow {
 };
 
 struct irm_flow * irm_flow_create();
+
 void              irm_flow_destroy(struct irm_flow * f);
 
+enum flow_state   irm_flow_get_state(struct irm_flow * f);
+
+
+void              irm_flow_set_state(struct irm_flow * f,
+                                     enum flow_state   state);
+
+enum flow_state   irm_flow_wait_state(struct irm_flow * f,
+                                      enum flow_state   state);
+
 #endif /* OUROBOROS_IRMD_IRM_FLOW_H */