Uniform adding and deleting of interfaces

The main benefit is the possibility to use interface hooks for links
that are created at runtime.

src/lib/connections/bond

@@ -10,7 +10,7 @@ bond_up() {
         report_error "Interface '$Interface' already exists"
         return 1
     else
-        ip link add name "$Interface" type bond
+        interface_add bond "$Interface"
     fi
     bring_interface_up "$Interface"
 
@@ -28,8 +28,7 @@ bond_down() {
     done
 
     ip_unset
-    bring_interface_down "$Interface"
-    ip link delete "$Interface"
+    interface_delete "$Interface"
 }
 
 

src/lib/connections/bridge

@@ -11,7 +11,7 @@ bridge_up() {
             return 1
         fi
     else
-        ip link add name "$Interface" type bridge
+        interface_add bridge "$Interface"
     fi
 
     for member in "${BindsToInterfaces[@]}"; do
@@ -34,8 +34,7 @@ bridge_down() {
     done
 
     ip_unset
-    bring_interface_down "$Interface"
-    ip link delete "$Interface" type bridge
+    interface_delete "$Interface"
 }
 
 

src/lib/connections/dummy

@@ -10,16 +10,14 @@ dummy_up() {
         return 1
     fi
 
-    ip link add "$Interface" type dummy
-
+    interface_add dummy "$Interface"
     bring_interface_up "$Interface"
     ip_set
 }
 
 dummy_down() {
     ip_unset
-    bring_interface_down "$Interface"
-    ip link del "$Interface"
+    interface_delete "$Interface"
 }
 
 

src/lib/connections/vlan

@@ -12,7 +12,7 @@ vlan_up() {
         return 1
     else
         bring_interface_up "$BindsToInterfaces"
-        ip link add link "$BindsToInterfaces" name "$Interface" type vlan id "$VLANID"
+        interface_add vlan "$Interface" "$BindsToInterfaces" id "$VLANID"
     fi
 
     ethernet_up
@@ -20,7 +20,7 @@ vlan_up() {
 
 vlan_down() {
     ethernet_down
-    ip link delete "$Interface"
+    interface_delete "$Interface"
 }
 
 

src/lib/network

@@ -10,6 +10,27 @@ is_interface() {
     [[ -d "/sys/class/net/${1%%:?*}" ]]
 }
 
+## Add an interface
+# $1: interface type
+# $2: interface name
+# $3: interface link (optional)
+# $4...: additional arguments
+interface_add() {
+    local type="$1" name="$2" link="$3"
+    shift 3
+    ip link add ${link:+link "$link"} name "$name" type "$type" "$@"
+    if [[ -x "$PROFILE_DIR/interfaces/$name" ]]; then
+        source "$PROFILE_DIR/interfaces/$name"
+    fi
+}
+
+## Delete an interface
+# $1: interface name
+interface_delete() {
+    bring_interface_down "$1"
+    ip link delete "$1"
+}
+
 ## Check if an interface is up
 # $1: interface name
 interface_is_up() {