owipcalc: add "prefix" operation to set prefix of base address during calculation

[openwrt/openwrt.git] / package / owipcalc / src / owipcalc.c

diff --git a/package/owipcalc/src/owipcalc.c b/package/owipcalc/src/owipcalc.c
index 6d7a8aaf43870203210890b43ab76cd2199d33aa..06d163e2f87f0bb98f7ea88f17f1403a84e2aae6 100644 (file)
--- a/package/owipcalc/src/owipcalc.c
+++ b/package/owipcalc/src/owipcalc.c
@@ -518,6 +518,12 @@ static bool cidr_howmany(struct cidr *a, struct cidr *b)
        return true;
 }
 
+static bool cidr_prefix(struct cidr *a, struct cidr *b)
+{
+       a->prefix = b->prefix;
+       return true;
+}
+
 static bool cidr_quiet(struct cidr *a)
 {
        quiet = true;
@@ -545,6 +551,11 @@ struct op ops[] = {
          .desc = "Turn base address into broadcast address",
          .f4.a1 = cidr_broadcast4 },
 
+       { .name = "prefix",
+         .desc = "Set the prefix of base address to argument",
+         .f4.a2 = cidr_prefix,
+         .f6.a2 = cidr_prefix },
+
        { .name = "netmask",
          .desc = "Print netmask of base address, does not change base address",
          .f4.a1 = cidr_netmask4 },