pkg/utils: use constant for chain prefix

diff --git a/utils/utils.go b/utils/utils.go
index a07ccfa..e1468aa 100644 (file)
--- a/utils/utils.go
+++ b/utils/utils.go
@@ -5,7 +5,8 @@ import (
        "fmt"
 )
 
-const MaxChainLength = 29 - len("CNI-")
+const ChainCNIPrefix = ("CNI-")
+const MaxChainLength = 29 - len(ChainCNIPrefix)
 
 // Generates a chain name to be used with iptables.
 // Ensures that the generated name is less than
@@ -15,5 +16,5 @@ func FormatChainName(name string, id string) string {
        if len(chain) > MaxChainLength {
                chain = chain[:MaxChainLength]
        }
-       return fmt.Sprintf("CNI-%s", chain)
+       return fmt.Sprintf("%s%s", ChainCNIPrefix, chain)
 }