net/ice/base: support priority configuration of exact node

[dpdk.git] / drivers / net / ice / base / ice_bst_tcam.c

diff --git a/drivers/net/ice/base/ice_bst_tcam.c b/drivers/net/ice/base/ice_bst_tcam.c
index 76b3a5c..306f62d 100644 (file)
--- a/drivers/net/ice/base/ice_bst_tcam.c
+++ b/drivers/net/ice/base/ice_bst_tcam.c
@@ -261,3 +261,31 @@ ice_bst_tcam_match(struct ice_bst_tcam_item *tcam_table, u8 *pat)
 
        return NULL;
 }
+
+static bool _start_with(const char *prefix, const char *string)
+{
+       int len1 = strlen(prefix);
+       int len2 = strlen(string);
+
+       if (len2 < len1)
+               return false;
+
+       return !memcmp(prefix, string, len1);
+}
+
+struct ice_bst_tcam_item *
+ice_bst_tcam_search(struct ice_bst_tcam_item *tcam_table,
+                   struct ice_lbl_item *lbl_table,
+                   const char *prefix, u16 *start)
+{
+       u16 i = *start;
+
+       for (; i < ICE_BST_TCAM_TABLE_SIZE; i++) {
+               if (_start_with(prefix, lbl_table[i].label)) {
+                       *start = i;
+                       return &tcam_table[lbl_table[i].idx];
+               }
+       }
+
+       return NULL;
+}