Introduce new RTE_ACL_MASKLEN_TO_BITMASK macro, that will be used
in several places inside librte_acl and it's UT.
Simplify and cleanup build_trie() code a bit.
Signed-off-by: Konstantin Ananyev <konstantin.ananyev at intel.com>
---
lib/librte_acl/acl_bld.c | 16 +++-------------
lib/librte_acl/rte_acl.h | 3 +++
2 files changed, 6 insertions(+), 13 deletions(-)
diff --git a/lib/librte_acl/acl_bld.c b/lib/librte_acl/acl_bld.c
index d89c66a..4d8a62f 100644
--- a/lib/librte_acl/acl_bld.c
+++ b/lib/librte_acl/acl_bld.c
@@ -1262,19 +1262,9 @@ build_trie(struct acl_build_context *context, struct
rte_acl_build_rule *head,
* all higher bits.
*/
uint64_t mask;
-
- if (fld->mask_range.u32 == 0) {
- mask = 0;
-
- /*
- * arithmetic right shift for the length of
- * the mask less the msb.
- */
- } else {
- mask = -1 <<
- (rule->config->defs[n].size *
- CHAR_BIT - fld->mask_range.u32);
- }
+ mask = RTE_ACL_MASKLEN_TO_BITMASK(
+ fld->mask_range.u32,
+ rule->config->defs[n].size);
/* gen a mini-trie for this field */
merge = acl_gen_mask_trie(context,
diff --git a/lib/librte_acl/rte_acl.h b/lib/librte_acl/rte_acl.h
index 8d9bbe5..bd8f892 100644
--- a/lib/librte_acl/rte_acl.h
+++ b/lib/librte_acl/rte_acl.h
@@ -122,6 +122,9 @@ enum {
#define RTE_ACL_INVALID_USERDATA 0
+#define RTE_ACL_MASKLEN_TO_BITMASK(v, s) \
+((v) == 0 ? (v) : (typeof(v))((uint64_t)-1 << ((s) * CHAR_BIT - (v))))
+
/**
* Miscellaneous data for ACL rule.
*/
--
2.4.2
