Add bucketsize parameter to all hash types

The parameter defines the upper limit in any hash bucket at adding new entries
from userspace - if the limit would be exceeded, ipset doubles the hash size
and rehashes. It means the set may consume more memory but gives faster
evaluation at matching in the set.

Signed-off-by: Jozsef Kadlecsik <kadlec@netfilter.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/args.c b/lib/args.c
index c25bb80..ab1022e 100644
--- a/lib/args.c
+++ b/lib/args.c
@@ -284,6 +284,14 @@ static const struct ipset_arg ipset_args[] = {
 		.print = ipset_print_number,
 		.help = "[skbqueue VALUE]",
 	},
+	[IPSET_ARG_BUCKETSIZE] = {
+		.name = { "bucketsize", NULL },
+		.has_arg = IPSET_MANDATORY_ARG,
+		.opt = IPSET_OPT_BUCKETSIZE,
+		.parse = ipset_parse_uint8,
+		.print = ipset_print_number,
+		.help = "[bucketsize VALUE]",
+	},
 };
 
 const struct ipset_arg *