lib, ipcpd: piggyback ECDHE on flow allocation

The initial implementation for the ECDHE key exchange was doing the
key exchange after a flow was established. The public keys are now
sent allowg on the flow allocation messages, so that an encrypted
tunnel can be created within 1 RTT. The flow allocation steps had to
be extended to pass the opaque data ('piggybacking').

Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/irmd/irm_flow.h b/src/irmd/irm_flow.h
index 28369e03..051a60a6 100644
--- a/src/irmd/irm_flow.h
+++ b/src/irmd/irm_flow.h
@@ -48,6 +48,8 @@ struct irm_flow {
         pid_t              n_1_pid;
 
         qosspec_t          qs;
+        void *             data;
+        size_t             len;
 
         struct shm_rbuff * n_rb;
         struct shm_rbuff * n_1_rb;