+/* search next no void pattern and skip fuzzy */
+static inline
+const struct rte_flow_item *next_no_fuzzy_pattern(
+ const struct rte_flow_item pattern[],
+ const struct rte_flow_item *cur)
+{
+ const struct rte_flow_item *next =
+ next_no_void_pattern(pattern, cur);
+ while (1) {
+ if (next->type != RTE_FLOW_ITEM_TYPE_FUZZY)
+ return next;
+ next = next_no_void_pattern(pattern, next);
+ }
+}
+
+static inline uint8_t signature_match(const struct rte_flow_item pattern[])
+{
+ const struct rte_flow_item_fuzzy *spec, *last, *mask;
+ const struct rte_flow_item *item;
+ uint32_t sh, lh, mh;
+ int i = 0;
+
+ while (1) {
+ item = pattern + i;
+ if (item->type == RTE_FLOW_ITEM_TYPE_END)
+ break;
+
+ if (item->type == RTE_FLOW_ITEM_TYPE_FUZZY) {
+ spec =
+ (const struct rte_flow_item_fuzzy *)item->spec;
+ last =
+ (const struct rte_flow_item_fuzzy *)item->last;
+ mask =
+ (const struct rte_flow_item_fuzzy *)item->mask;
+
+ if (!spec || !mask)
+ return 0;
+
+ sh = spec->thresh;
+
+ if (!last)
+ lh = sh;
+ else
+ lh = last->thresh;
+
+ mh = mask->thresh;
+ sh = sh & mh;
+ lh = lh & mh;
+
+ if (!sh || sh > lh)
+ return 0;
+
+ return 1;
+ }
+
+ i++;
+ }
+
+ return 0;
+}
+