ipcpd: refactor IPCP configuration

The ipcp configuration struct now has internal structures for the
different IPCPs and for IPCP components of the unicast IPCP.

Split the very long IPCP main loop into individual handler functions.

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

3 files changed, 13 insertions, 32 deletions

diff --git a/src/ipcpd/unicast/dt.c b/src/ipcpd/unicast/dt.c
index 48940a2b..60975aed 100644
--- a/src/ipcpd/unicast/dt.c
+++ b/src/ipcpd/unicast/dt.c
@@ -563,10 +563,7 @@ static void * dt_conn_handle(void * o)
         return 0;
 }
 
-int dt_init(enum pol_routing pr,
-            uint8_t          addr_size,
-            uint8_t          eid_size,
-            uint8_t          max_ttl)
+int dt_init(struct dt_config cfg)
 {
         int              i;
         int              j;
@@ -582,14 +579,14 @@ int dt_init(enum pol_routing pr,
         info.pref_syntax  = PROTO_FIXED;
         info.addr         = ipcpi.dt_addr;
 
-        if (eid_size != 8) { /* only support 64 bits from now */
+        if (cfg.eid_size != 8) { /* only support 64 bits from now */
                 log_warn("Invalid EID size. Only 64 bit is supported.");
-                eid_size = 8;
+                cfg.eid_size = 8;
         }
 
-        dt_pci_info.addr_size = addr_size;
-        dt_pci_info.eid_size  = eid_size;
-        dt_pci_info.max_ttl   = max_ttl;
+        dt_pci_info.addr_size = cfg.addr_size;
+        dt_pci_info.eid_size  = cfg.eid_size;
+        dt_pci_info.max_ttl   = cfg.max_ttl;
 
         dt_pci_info.qc_o      = dt_pci_info.addr_size;
         dt_pci_info.ttl_o     = dt_pci_info.qc_o + QOS_LEN;
@@ -607,7 +604,7 @@ int dt_init(enum pol_routing pr,
                 goto fail_connmgr_comp_init;
         }
 
-        pp = routing_init(pr);
+        pp = routing_init(cfg.routing_type);
         if (pp < 0) {
                 log_err("Failed to init routing.");
                 goto fail_routing;
diff --git a/src/ipcpd/unicast/dt.h b/src/ipcpd/unicast/dt.h
index 5ad8cceb..478c79ea 100644
--- a/src/ipcpd/unicast/dt.h
+++ b/src/ipcpd/unicast/dt.h
@@ -31,11 +31,7 @@
 #define DT_PROTO     "dtp"
 #define INVALID_ADDR 0
 
-int  dt_init(enum pol_routing pr,
-             uint8_t          addr_size,
-             uint8_t          eid_size,
-             uint8_t          max_ttl
-);
+int  dt_init(struct dt_config cfg);
 
 void dt_fini(void);
 
diff --git a/src/ipcpd/unicast/main.c b/src/ipcpd/unicast/main.c
index 4d2ef1f2..1318ec2f 100644
--- a/src/ipcpd/unicast/main.c
+++ b/src/ipcpd/unicast/main.c
@@ -59,18 +59,13 @@ struct ipcp ipcpi;
 
 static int initialize_components(const struct ipcp_config * conf)
 {
-        ipcpi.layer_name = strdup(conf->layer_info.layer_name);
-        if (ipcpi.layer_name == NULL) {
-                log_err("Failed to set layer name.");
-                goto fail_layer_name;
-        }
-
+        strcpy(ipcpi.layer_name, conf->layer_info.layer_name);
         ipcpi.dir_hash_algo = conf->layer_info.dir_hash_algo;
 
         assert(ipcp_dir_hash_len() != 0);
 
-        if (addr_auth_init(conf->addr_auth_type,
-                           &conf->addr_size)) {
+        if (addr_auth_init(conf->unicast.addr_auth_type,
+                           &conf->unicast.dt.addr_size)) {
                 log_err("Failed to init address authority.");
                 goto fail_addr_auth;
         }
@@ -83,15 +78,12 @@ static int initialize_components(const struct ipcp_config * conf)
 
         log_dbg("IPCP got address %" PRIu64 ".", ipcpi.dt_addr);
 
-        if (ca_init(conf->cong_avoid)) {
+        if (ca_init(conf->unicast.cong_avoid)) {
                 log_err("Failed to initialize congestion avoidance.");
                 goto fail_ca;
         }
 
-        if (dt_init(conf->routing_type,
-                    conf->addr_size,
-                    conf->eid_size,
-                    conf->max_ttl)) {
+        if (dt_init(conf->unicast.dt)) {
                 log_err("Failed to initialize data transfer component.");
                 goto fail_dt;
         }
@@ -119,8 +111,6 @@ static int initialize_components(const struct ipcp_config * conf)
  fail_ca:
         addr_auth_fini();
  fail_addr_auth:
-        free(ipcpi.layer_name);
- fail_layer_name:
         return -1;
 }
 
@@ -135,8 +125,6 @@ static void finalize_components(void)
         ca_fini();
 
         addr_auth_fini();
-
-        free(ipcpi.layer_name);
 }
 
 static int start_components(void)