route: Allow to specify MTU along the path to the destination.

[network.git] / functions.route

diff --git a/functions.route b/functions.route
index fca8543701295f23536badcecc960a3d37e3927d..d72a1071ef017607bf2d5afb5defa73057b6e2db 100644 (file)
--- a/functions.route
+++ b/functions.route
@@ -46,6 +46,9 @@ function route_add() {
                        --blackhole)
                                blackhole="true"
                                ;;
+                       --mtu=*)
+                               mtu=$(cli_get_val ${1})
+                               ;;
                        *)
                                network=${1}
                                ;;
@@ -104,6 +107,11 @@ function route_add() {
                fi
        fi
 
+       if isset mtu && ! isinteger mtu; then
+               error "MTU must be an integer number: ${mtu}"
+               return ${EXIT_ERROR}
+       fi
+
        local line
        list_append line "network=\"${network}\""
 
@@ -121,6 +129,11 @@ function route_add() {
                fi
        done
 
+       # Add MTU (if set).
+       if isset mtu; then
+               list_append line "mtu=\"${mtu}\""
+       fi
+
        # Write line to file.
        print "${line}" >> ${NETWORK_CONFIG_ROUTES}
 
@@ -180,8 +193,8 @@ function route_list() {
                return ${EXIT_OK}
        fi
 
-       local format="%-40s %-20s"
-       print "${format}" "NETWORK/HOST" "GATEWAY"
+       local format="%-40s %-20s %-4s"
+       print "${format}" "NETWORK/HOST" "GATEWAY" "MTU"
 
        local ${NETWORK_CONFIG_ROUTES_PARAMS}
        local line
@@ -203,7 +216,12 @@ function route_list() {
                        [ "${protocol}" = "${proto}" ] || continue
                fi
 
-               print "${format}" "${network}" "${gateway}"
+               # Print something when no MTU was set.
+               if ! isset mtu; then
+                       mtu="-"
+               fi
+
+               print "${format}" "${network}" "${gateway}" "${mtu}"
        done < ${NETWORK_CONFIG_ROUTES}
 }
 
@@ -250,6 +268,9 @@ function route_parse_line() {
                        blackhole=*)
                                blackhole=$(cli_get_val ${arg})
                                ;;
+                       mtu=*)
+                               mtu=$(cli_get_val ${arg})
+                               ;;
                esac
        done <<< "$(args $@)"
 
@@ -274,6 +295,11 @@ function route_parse_line() {
                [ ${counter} -eq 1 ] || return ${EXIT_ERROR}
        fi
 
+       # mtu must be an integer number.
+       if isset mtu; then
+               isinteger mtu || return ${EXIT_ERROR}
+       fi
+
        return ${EXIT_OK}
 }
 
@@ -303,7 +329,7 @@ function route_apply() {
 
                # Add the route.
                route_entry_add ${network} --table="static" --proto="static" \
-                       --type="${type}" --gateway="${gateway}"
+                       --type="${type}" --gateway="${gateway}" --mtu="${mtu}"
                local ret=$?
 
                if [ ${ret} -ne ${EXIT_OK} ]; then
@@ -321,6 +347,7 @@ function route_entry_add() {
        local proto
        local table
        local type="unicast"
+       local mtu
 
        local command
 
@@ -338,6 +365,9 @@ function route_entry_add() {
                        --proto=*)
                                proto=$(cli_get_val ${1})
                                ;;
+                       --mtu=*)
+                               mtu=$(cli_get_val ${1})
+                               ;;
                        *)
                                if isset network; then
                                        warning "Unrecognized argument: ${1}"
@@ -352,6 +382,9 @@ function route_entry_add() {
        # Validate input.
        assert isoneof type unicast broadcast unreachable prohibit blackhole
        assert ip_is_network ${network}
+       if isset mtu; then
+               assert isinteger mtu
+       fi
 
        # Detect the protocol of the given network.
        local protocol=$(ip_detect_protocol ${network})
@@ -391,7 +424,12 @@ function route_entry_add() {
                list_append command "proto ${proto}"
        fi
 
-       cmd "${command}"
+       # Add MTU.
+       if isset mtu; then
+               list_append command "mtu ${mtu}"
+       fi
+
+       cmd_quiet "${command}"
 }
 
 function route_table_create() {