summaryrefslogtreecommitdiffstats
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/netlink.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/src/netlink.c b/src/netlink.c
index c48e667b..b1e44ad0 100644
--- a/src/netlink.c
+++ b/src/netlink.c
@@ -234,7 +234,8 @@ static void netlink_gen_verdict(const struct expr *expr,
static void netlink_gen_prefix(const struct expr *expr,
struct nft_data_linearize *data)
{
- uint32_t i, cidr, idx;
+ uint32_t idx;
+ int32_t i, cidr;
uint32_t mask;
assert(expr->ops->type == EXPR_PREFIX);
@@ -242,11 +243,13 @@ static void netlink_gen_prefix(const struct expr *expr,
data->len = div_round_up(expr->prefix->len, BITS_PER_BYTE);
cidr = expr->prefix_len;
- for (i = 0; i < data->len; i+= 32) {
+ for (i = 0; (uint32_t)i / BITS_PER_BYTE < data->len; i += 32) {
if (cidr - i >= 32)
- mask = 0;
+ mask = 0xffffffff;
+ else if (cidr - i > 0)
+ mask = (1 << (cidr - i)) - 1;
else
- mask = (1 << cidr) - 1;
+ mask = 0;
idx = i / 32;
data->value[idx] = mask;