chore: use gofumpt for code formatting

internal/routing/default.go

@@ -9,9 +9,7 @@ import (
 	"golang.org/x/sys/unix"
 )
 
-var (
-	ErrRouteDefaultNotFound = errors.New("default route not found")
-)
+var ErrRouteDefaultNotFound = errors.New("default route not found")
 
 type DefaultRoute struct {
 	NetInterface string

internal/routing/errors.go

@@ -4,6 +4,4 @@ import (
 	"errors"
 )
 
-var (
-	ErrLinkDefaultNotFound = errors.New("default link not found")
-)
+var ErrLinkDefaultNotFound = errors.New("default link not found")

internal/routing/ip.go

@@ -14,9 +14,7 @@ func ipIsPrivate(ip netip.Addr) bool {
 		ip.IsLinkLocalUnicast() || ip.IsLinkLocalMulticast()
 }
 
-var (
-	errInterfaceIPNotFound = errors.New("IP address not found for interface")
-)
+var errInterfaceIPNotFound = errors.New("IP address not found for interface")
 
 func ipMatchesFamily(ip netip.Addr, family int) bool {
 	return (family == netlink.FamilyV4 && ip.Is4()) ||

internal/routing/outbound.go

@@ -22,7 +22,8 @@ func (r *Routing) SetOutboundRoutes(outboundSubnets []netip.Prefix) error {
 }
 
 func (r *Routing) setOutboundRoutes(outboundSubnets []netip.Prefix,
-	defaultRoutes []DefaultRoute) (err error) {
+	defaultRoutes []DefaultRoute,
+) (err error) {
 	r.stateMutex.Lock()
 	defer r.stateMutex.Unlock()
 
@@ -47,7 +48,8 @@ func (r *Routing) setOutboundRoutes(outboundSubnets []netip.Prefix,
 }
 
 func (r *Routing) removeOutboundSubnets(subnets []netip.Prefix,
-	defaultRoutes []DefaultRoute) (warnings []string) {
+	defaultRoutes []DefaultRoute,
+) (warnings []string) {
 	for i, subNet := range subnets {
 		for _, defaultRoute := range defaultRoutes {
 			err := r.deleteRouteVia(subNet, defaultRoute.Gateway, defaultRoute.NetInterface, outboundTable)
@@ -73,7 +75,8 @@ func (r *Routing) removeOutboundSubnets(subnets []netip.Prefix,
 }
 
 func (r *Routing) addOutboundSubnets(subnets []netip.Prefix,
-	defaultRoutes []DefaultRoute) (err error) {
+	defaultRoutes []DefaultRoute,
+) (err error) {
 	for i, subnet := range subnets {
 		subnetIsIPv6 := subnet.Addr().Is6()
 		subnetRouteAdded := false

internal/routing/routes.go

@@ -9,7 +9,8 @@ import (
 )
 
 func (r *Routing) addRouteVia(destination netip.Prefix, gateway netip.Addr,
-	iface string, table int) error {
+	iface string, table int,
+) error {
 	destinationStr := destination.String()
 	r.logger.Info("adding route for " + destinationStr)
 	r.logger.Debug("ip route replace " + destinationStr +
@@ -37,7 +38,8 @@ func (r *Routing) addRouteVia(destination netip.Prefix, gateway netip.Addr,
 }
 
 func (r *Routing) deleteRouteVia(destination netip.Prefix, gateway netip.Addr,
-	iface string, table int) (err error) {
+	iface string, table int,
+) (err error) {
 	destinationStr := destination.String()
 	r.logger.Info("deleting route for " + destinationStr)
 	r.logger.Debug("ip route delete " + destinationStr +

internal/routing/rules.go

@@ -60,7 +60,8 @@ func (r *Routing) deleteIPRule(src, dst netip.Prefix, table, priority int) error
 }
 
 func ruleDbgMsg(add bool, src, dst netip.Prefix,
-	table, priority int) (debugMessage string) {
+	table, priority int,
+) (debugMessage string) {
 	debugMessage = "ip rule"
 
 	if add {

internal/routing/rules_test.go

@@ -17,7 +17,8 @@ func makeNetipPrefix(n byte) netip.Prefix {
 }
 
 func makeIPRule(src, dst netip.Prefix,
-	table, priority int) netlink.Rule {
+	table, priority int,
+) netlink.Rule {
 	rule := netlink.NewRule()
 	rule.Src = src
 	rule.Dst = dst