ipcpd: Revise Data Transfer component0.10.0

This makes the TTL non-optional and allows the maximum (initial) value
of the TTL to be specified at bootstrap (the default is set to
60). The fd in the DT PCI is now called EID (Endpoint ID). The names
"dif" and "ae" have been replaced by "layer" and "component"
respectively in all sources.

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

7 files changed, 68 insertions, 69 deletions

diff --git a/src/lib/CMakeLists.txt b/src/lib/CMakeLists.txt
index 2ee285f8..8e09c427 100644
--- a/src/lib/CMakeLists.txt
+++ b/src/lib/CMakeLists.txt
@@ -6,7 +6,7 @@ include_directories(${CMAKE_BINARY_DIR}/include)
 
 protobuf_generate_c(IRM_PROTO_SRCS IRM_PROTO_HDRS irmd_messages.proto)
 protobuf_generate_c(IPCP_PROTO_SRCS IPCP_PROTO_HDRS ipcpd_messages.proto)
-protobuf_generate_c(DIF_CONFIG_PROTO_SRCS DIF_CONFIG_PROTO_HDRS
+protobuf_generate_c(LAYER_CONFIG_PROTO_SRCS LAYER_CONFIG_PROTO_HDRS
   ipcp_config.proto)
 protobuf_generate_c(CACEP_PROTO_SRCS CACEP_PROTO_HDRS cacep.proto)
 
@@ -217,7 +217,7 @@ configure_file("${CMAKE_CURRENT_SOURCE_DIR}/config.h.in"
   "${CMAKE_CURRENT_BINARY_DIR}/config.h" @ONLY)
 
 add_library(ouroboros-common SHARED ${SOURCE_FILES_COMMON} ${IRM_PROTO_SRCS}
-  ${IPCP_PROTO_SRCS} ${DIF_CONFIG_PROTO_SRCS})
+  ${IPCP_PROTO_SRCS} ${LAYER_CONFIG_PROTO_SRCS})
 
 add_library(ouroboros-dev SHARED ${SOURCE_FILES_DEV} ${CACEP_PROTO_SRCS})
 
diff --git a/src/lib/cacep.c b/src/lib/cacep.c
index fb1d4845..6efb7295 100644
--- a/src/lib/cacep.c
+++ b/src/lib/cacep.c
@@ -49,7 +49,7 @@ static int read_msg(int                fd,
         if (msg == NULL)
                 return -1;
 
-        strcpy(info->ae_name, msg->ae_name);
+        strcpy(info->comp_name, msg->comp_name);
         strcpy(info->protocol, msg->protocol);
 
         info->pref_version = msg->pref_version;
@@ -68,7 +68,7 @@ static int send_msg(int                      fd,
         uint8_t *   data = NULL;
         size_t      len  = 0;
 
-        msg.ae_name      = (char *) info->ae_name;
+        msg.comp_name    = (char *) info->comp_name;
         msg.protocol     = (char *) info->protocol;
         msg.address      = info->addr;
         msg.pref_version = info->pref_version;
diff --git a/src/lib/cacep.proto b/src/lib/cacep.proto
index 945ccccb..16c7a38a 100644
--- a/src/lib/cacep.proto
+++ b/src/lib/cacep.proto
@@ -28,7 +28,7 @@ message fixed_conc_syntax_msg {
 }
 
 message cacep_msg {
-        required string ae_name                    = 1;
+        required string comp_name                  = 1;
         required string protocol                   = 2;
         required int32 pref_version                = 3;
         repeated int32 supp_version                = 4;
diff --git a/src/lib/ipcp_config.proto b/src/lib/ipcp_config.proto
index 078c1491..92656f8d 100644
--- a/src/lib/ipcp_config.proto
+++ b/src/lib/ipcp_config.proto
@@ -1,7 +1,7 @@
 /*
  * Ouroboros - Copyright (C) 2016 - 2018
  *
- * DIF config message
+ * Layer configuration message
  *
  *    Dimitri Staessens <dimitri.staessens@ugent.be>
  *    Sander Vrijders   <sander.vrijders@ugent.be>
@@ -22,24 +22,24 @@
 
 syntax = "proto2";
 
-message dif_info_msg {
-        required string dif_name      =  1;
+message layer_info_msg {
+        required string layer_name    =  1;
         required uint32 dir_hash_algo =  2;
 }
 
 message ipcp_config_msg {
-        required dif_info_msg dif_info =  1;
-        required int32 ipcp_type       =  2;
+        required layer_info_msg layer_info =  1;
+        required int32 ipcp_type           =  2;
         // Config for normal IPCP
-        optional uint32 addr_size      =  3;
-        optional uint32 fd_size        =  4;
-        optional bool has_ttl          =  5;
-        optional uint32 addr_auth_type =  6;
-        optional uint32 routing_type   =  7;
-        optional uint32 pff_type       =  8;
+        optional uint32 addr_size          =  3;
+        optional uint32 eid_size           =  4;
+        optional uint32 max_ttl            =  5;
+        optional uint32 addr_auth_type     =  6;
+        optional uint32 routing_type       =  7;
+        optional uint32 pff_type           =  8;
         // Config for UDP
-        optional uint32 ip_addr        =  9;
-        optional uint32 dns_addr       = 10;
+        optional uint32 ip_addr            =  9;
+        optional uint32 dns_addr           = 10;
         // Config for the Ethernet LLC
-        optional string if_name        = 11;
+        optional string if_name            = 11;
 }
diff --git a/src/lib/ipcpd_messages.proto b/src/lib/ipcpd_messages.proto
index af25189e..2d3bad7f 100644
--- a/src/lib/ipcpd_messages.proto
+++ b/src/lib/ipcpd_messages.proto
@@ -39,16 +39,16 @@ enum ipcp_msg_code {
 };
 
 message ipcp_msg {
-        required ipcp_msg_code code    =  1;
-        optional string name           =  2;
-        optional bytes hash            =  3;
-        optional int32 port_id         =  4;
-        optional string dst_name       =  5;
-        optional uint32 qoscube        =  6;
-        optional ipcp_config_msg conf  =  7;
-        optional int32 pid             =  8;
-        optional dif_info_msg dif_info =  9;
-        optional int32 response        = 10;
-        optional string comp_name      = 11;
-        optional int32 result          = 12;
+        required ipcp_msg_code code        =  1;
+        optional string name               =  2;
+        optional bytes hash                =  3;
+        optional int32 port_id             =  4;
+        optional string dst_name           =  5;
+        optional uint32 qoscube            =  6;
+        optional ipcp_config_msg conf      =  7;
+        optional int32 pid                 =  8;
+        optional layer_info_msg layer_info =  9;
+        optional int32 response            = 10;
+        optional string comp_name          = 11;
+        optional int32 result              = 12;
 };
diff --git a/src/lib/irm.c b/src/lib/irm.c
index 8f5a5191..66b5c849 100644
--- a/src/lib/irm.c
+++ b/src/lib/irm.c
@@ -94,11 +94,11 @@ int irm_destroy_ipcp(pid_t pid)
 int irm_bootstrap_ipcp(pid_t                      pid,
                        const struct ipcp_config * conf)
 {
-        irm_msg_t         msg      = IRM_MSG__INIT;
-        ipcp_config_msg_t config   = IPCP_CONFIG_MSG__INIT;
-        dif_info_msg_t    dif_info = DIF_INFO_MSG__INIT;
-        irm_msg_t *       recv_msg = NULL;
-        int               ret      = -1;
+        irm_msg_t         msg        = IRM_MSG__INIT;
+        ipcp_config_msg_t config     = IPCP_CONFIG_MSG__INIT;
+        layer_info_msg_t  layer_info = LAYER_INFO_MSG__INIT;
+        irm_msg_t *       recv_msg   = NULL;
+        int               ret        = -1;
 
         if (pid == -1 || conf == NULL)
                 return -EINVAL;
@@ -107,10 +107,9 @@ int irm_bootstrap_ipcp(pid_t                      pid,
         msg.has_pid = true;
         msg.pid     = pid;
 
-        config.dif_info = &dif_info;
-        msg.conf = &config;
-
-        dif_info.dif_name = (char *) conf->dif_info.dif_name;
+        config.layer_info     = &layer_info;
+        msg.conf              = &config;
+        layer_info.layer_name = (char *) conf->layer_info.layer_name;
 
         config.ipcp_type = conf->type;
 
@@ -118,17 +117,17 @@ int irm_bootstrap_ipcp(pid_t                      pid,
         case IPCP_NORMAL:
                 config.has_addr_size      = true;
                 config.addr_size          = conf->addr_size;
-                config.has_fd_size        = true;
-                config.fd_size            = conf->fd_size;
-                config.has_has_ttl        = true;
-                config.has_ttl            = conf->has_ttl;
+                config.has_eid_size       = true;
+                config.eid_size           = conf->eid_size;
+                config.has_max_ttl        = true;
+                config.max_ttl            = conf->max_ttl;
                 config.has_addr_auth_type = true;
                 config.addr_auth_type     = conf->addr_auth_type;
                 config.has_routing_type   = true;
                 config.routing_type       = conf->routing_type;
                 config.has_pff_type       = true;
                 config.pff_type           = conf->pff_type;
-                dif_info.dir_hash_algo    = conf->dif_info.dir_hash_algo;
+                layer_info.dir_hash_algo  = conf->layer_info.dir_hash_algo;
                 break;
         case IPCP_UDP:
                 config.has_ip_addr  = true;
@@ -258,28 +257,28 @@ ssize_t irm_list_ipcps(const char * name,
 }
 
 int irm_enroll_ipcp(pid_t        pid,
-                    const char * dif_name)
+                    const char * layer_name)
 {
         irm_msg_t   msg      = IRM_MSG__INIT;
         irm_msg_t * recv_msg = NULL;
         int         ret      = -1;
 
-        if (pid == -1 || dif_name == NULL)
+        if (pid == -1 || layer_name == NULL)
                 return -EINVAL;
 
-        msg.code       = IRM_MSG_CODE__IRM_ENROLL_IPCP;
-        msg.has_pid    = true;
-        msg.pid        = pid;
-        msg.n_dif_name = 1;
-        msg.dif_name   = malloc(sizeof(*(msg.dif_name)));
-        if (msg.dif_name == NULL)
+        msg.code         = IRM_MSG_CODE__IRM_ENROLL_IPCP;
+        msg.has_pid      = true;
+        msg.pid          = pid;
+        msg.n_layer_name = 1;
+        msg.layer_name   = malloc(sizeof(*(msg.layer_name)));
+        if (msg.layer_name == NULL)
                 return -ENOMEM;
 
-        msg.dif_name[0] = (char *) dif_name;
+        msg.layer_name[0] = (char *) layer_name;
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL) {
-                free(msg.dif_name);
+                free(msg.layer_name);
                 return -EIRMD;
         }
 
@@ -291,7 +290,7 @@ int irm_enroll_ipcp(pid_t        pid,
         ret = recv_msg->result;
         irm_msg__free_unpacked(recv_msg, NULL);
 
-        free(msg.dif_name);
+        free(msg.layer_name);
         return ret;
 }
 
@@ -519,22 +518,22 @@ int irm_unbind_process(pid_t        pid,
 }
 
 int irm_reg(const char * name,
-            char **      difs,
+            char **      layers,
             size_t       len)
 {
-        irm_msg_t msg = IRM_MSG__INIT;
+        irm_msg_t   msg      = IRM_MSG__INIT;
         irm_msg_t * recv_msg = NULL;
-        int ret = -1;
+        int         ret      = -1;
 
-        if (name == NULL || difs == NULL || len == 0)
+        if (name == NULL || layers == NULL || len == 0)
                 return -EINVAL;
 
         msg.code = IRM_MSG_CODE__IRM_REG;
 
         msg.dst_name = (char *) name;
 
-        msg.dif_name = difs;
-        msg.n_dif_name = len;
+        msg.layer_name   = layers;
+        msg.n_layer_name = len;
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL)
@@ -553,22 +552,22 @@ int irm_reg(const char * name,
 
 
 int irm_unreg(const char * name,
-              char **      difs,
+              char **      layers,
               size_t       len)
 {
-        irm_msg_t msg = IRM_MSG__INIT;
+        irm_msg_t   msg      = IRM_MSG__INIT;
         irm_msg_t * recv_msg = NULL;
-        int ret = -1;
+        int         ret      = -1;
 
-        if (name == NULL || difs == NULL || len == 0)
+        if (name == NULL || layers == NULL || len == 0)
                 return -EINVAL;
 
         msg.code = IRM_MSG_CODE__IRM_UNREG;
 
         msg.dst_name = (char *) name;
 
-        msg.dif_name = (char **) difs;
-        msg.n_dif_name = len;
+        msg.layer_name   = (char **) layers;
+        msg.n_layer_name = len;
 
         recv_msg = send_recv_irm_msg(&msg);
         if (recv_msg == NULL)
diff --git a/src/lib/irmd_messages.proto b/src/lib/irmd_messages.proto
index b4b28136..51b15023 100644
--- a/src/lib/irmd_messages.proto
+++ b/src/lib/irmd_messages.proto
@@ -53,7 +53,7 @@ message irm_msg {
         optional string prog_name     =  2;
         optional sint32 pid           =  3;
         optional uint32 ipcp_type     =  4;
-        repeated string dif_name      =  5;
+        repeated string layer_name    =  5;
         repeated string args          =  6;
         optional sint32 response      =  7;
         optional string dst_name      =  8;