lib: Pass qosspec at flow allocation

The flow allocator now passes the full qos specification to the
endpoint, instead of just a cube. This is a more flexible
architecture, as it makes QoS cubes internal to the layers.

Adds endianness transforms for the flow allocator protocol in the
normal IPCP.

Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be>
Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>

1 files changed, 41 insertions, 16 deletions

diff --git a/src/ipcpd/normal/fa.c b/src/ipcpd/normal/fa.c
index 10f0a863..4c82e0e0 100644
--- a/src/ipcpd/normal/fa.c
+++ b/src/ipcpd/normal/fa.c
@@ -57,8 +57,15 @@ struct fa_msg {
         uint32_t r_eid;
         uint32_t s_eid;
         uint8_t  code;
-        uint8_t  qc;
         int8_t   response;
+        /* QoS parameters from spec, aligned */
+        uint8_t  availability;
+        uint8_t  in_order;
+        uint32_t delay;
+        uint64_t bandwidth;
+        uint32_t loss;
+        uint32_t ber;
+        uint32_t max_gap;
 } __attribute__((packed));
 
 struct {
@@ -100,6 +107,7 @@ static void fa_post_sdu(void *               comp,
         int             fd;
         uint8_t *       buf;
         struct fa_msg * msg;
+        qosspec_t       qs;
 
         (void) comp;
 
@@ -142,10 +150,18 @@ static void fa_post_sdu(void *               comp,
 
                 assert(ipcpi.alloc_id == -1);
 
+                qs.delay        = ntoh32(msg->delay);
+                qs.bandwidth    = ntoh64(msg->bandwidth);
+                qs.availability = msg->availability;
+                qs.loss         = ntoh32(msg->loss);
+                qs.ber          = ntoh32(msg->ber);
+                qs.in_order     = msg->in_order;
+                qs.max_gap      = ntoh32(msg->max_gap);
+
                 fd = ipcp_flow_req_arr(getpid(),
                                        (uint8_t *) (msg + 1),
                                        ipcp_dir_hash_len(),
-                                       msg->qc);
+                                       qs);
                 if (fd < 0) {
                         pthread_mutex_unlock(&ipcpi.alloc_lock);
                         log_err("Failed to get fd for flow.");
@@ -155,8 +171,8 @@ static void fa_post_sdu(void *               comp,
 
                 pthread_rwlock_wrlock(&fa.flows_lock);
 
-                fa.r_eid[fd]  = msg->s_eid;
-                fa.r_addr[fd] = msg->s_addr;
+                fa.r_eid[fd]  = ntoh32(msg->s_eid);
+                fa.r_addr[fd] = ntoh64(msg->s_addr);
 
                 pthread_rwlock_unlock(&fa.flows_lock);
 
@@ -169,14 +185,14 @@ static void fa_post_sdu(void *               comp,
         case FLOW_REPLY:
                 pthread_rwlock_wrlock(&fa.flows_lock);
 
-                fa.r_eid[msg->r_eid] = msg->s_eid;
+                fa.r_eid[ntoh32(msg->r_eid)] = ntoh32(msg->s_eid);
 
-                ipcp_flow_alloc_reply(msg->r_eid, msg->response);
+                ipcp_flow_alloc_reply(ntoh32(msg->r_eid), msg->response);
 
                 if (msg->response < 0)
-                        destroy_conn(msg->r_eid);
+                        destroy_conn(ntoh32(msg->r_eid));
                 else
-                        sdu_sched_add(fa.sdu_sched, msg->r_eid);
+                        sdu_sched_add(fa.sdu_sched, ntoh32(msg->r_eid));
 
                 pthread_rwlock_unlock(&fa.flows_lock);
 
@@ -227,11 +243,12 @@ void fa_stop(void)
 
 int fa_alloc(int             fd,
              const uint8_t * dst,
-             qoscube_t       qc)
+             qosspec_t       qs)
 {
         struct fa_msg *      msg;
         uint64_t             addr;
         struct shm_du_buff * sdb;
+        qoscube_t            qc;
 
         addr = dir_query(dst);
         if (addr == 0)
@@ -240,14 +257,22 @@ int fa_alloc(int             fd,
         if (ipcp_sdb_reserve(&sdb, sizeof(*msg) + ipcp_dir_hash_len()))
                 return -1;
 
-        msg         = (struct fa_msg *) shm_du_buff_head(sdb);
-        msg->code   = FLOW_REQ;
-        msg->qc     = qc;
-        msg->s_eid  = fd;
-        msg->s_addr = ipcpi.dt_addr;
+        msg               = (struct fa_msg *) shm_du_buff_head(sdb);
+        msg->code         = FLOW_REQ;
+        msg->s_eid        = hton32(fd);
+        msg->s_addr       = hton64(ipcpi.dt_addr);
+        msg->delay        = hton32(qs.delay);
+        msg->bandwidth    = hton64(qs.bandwidth);
+        msg->availability = qs.availability;
+        msg->loss         = hton32(qs.loss);
+        msg->ber          = hton32(qs.ber);
+        msg->in_order     = qs.in_order;
+        msg->max_gap      = hton32(qs.max_gap);
 
         memcpy(msg + 1, dst, ipcp_dir_hash_len());
 
+        qc = qos_spec_to_cube(qs);
+
         if (dt_write_sdu(addr, qc, fa.fd, sdb)) {
                 ipcp_sdb_release(sdb);
                 return -1;
@@ -302,8 +327,8 @@ int fa_alloc_resp(int fd,
 
         msg           = (struct fa_msg *) shm_du_buff_head(sdb);
         msg->code     = FLOW_REPLY;
-        msg->r_eid    = fa.r_eid[fd];
-        msg->s_eid    = fd;
+        msg->r_eid    = hton32(fa.r_eid[fd]);
+        msg->s_eid    = hton32(fd);
         msg->response = response;
 
         if (response < 0) {