net/mvpp2: support raw flow pattern

Add support for RAW type and connect it to MUSDK UDF

Signed-off-by: Liron Himi <lironh@marvell.com>

diff --git a/drivers/net/mvpp2/mrvl_ethdev.h b/drivers/net/mvpp2/mrvl_ethdev.h
index 8be7603..27d34ec 100644 (file)
--- a/drivers/net/mvpp2/mrvl_ethdev.h
+++ b/drivers/net/mvpp2/mrvl_ethdev.h
@@ -92,6 +92,7 @@ struct rte_flow {
        struct pp2_cls_tbl_rule rule;
        struct pp2_cls_cos_desc cos;
        struct pp2_cls_tbl_action action;
+       uint8_t next_udf_id;
 };
 
 struct mrvl_mtr_profile {

diff --git a/drivers/net/mvpp2/mrvl_flow.c b/drivers/net/mvpp2/mrvl_flow.c
index ffa47a1..3c8052f 100644 (file)
--- a/drivers/net/mvpp2/mrvl_flow.c
+++ b/drivers/net/mvpp2/mrvl_flow.c
@@ -1196,6 +1196,146 @@ out:
        return -rte_errno;
 }
 
+static int
+mrvl_string_to_hex_values(const uint8_t *input_string,
+                         uint8_t *hex_key,
+                         uint8_t *length)
+{
+       char tmp_arr[3], tmp_string[MRVL_CLS_STR_SIZE_MAX], *string_iter;
+       int i;
+
+       strcpy(tmp_string, (const char *)input_string);
+       string_iter = tmp_string;
+
+       string_iter += 2; /* skip the '0x' */
+       *length = ((*length - 2) + 1) / 2;
+
+       for (i = 0; i < *length; i++) {
+               strncpy(tmp_arr, string_iter, 2);
+               tmp_arr[2] = '\0';
+               if (get_val_securely8(tmp_arr, 16,
+                                     &hex_key[*length - 1 - i]) < 0)
+                       return -1;
+               string_iter += 2;
+       }
+
+       return 0;
+}
+
+/**
+ * Parse raw flow item.
+ *
+ * @param item Pointer to the flow item.
+ * @param flow Pointer to the flow.
+ * @param error Pointer to the flow error.
+ * @returns 0 on success, negative value otherwise.
+ */
+static int
+mrvl_parse_raw(const struct rte_flow_item *item,
+              struct rte_flow *flow,
+              struct rte_flow_error *error)
+{
+       const struct rte_flow_item_raw *spec = NULL, *mask = NULL;
+       struct pp2_cls_rule_key_field *key_field;
+       struct mv_net_udf *udf_params;
+       uint8_t length;
+       int ret;
+
+       ret = mrvl_parse_init(item, (const void **)&spec, (const void **)&mask,
+                             &rte_flow_item_raw_mask,
+                             sizeof(struct rte_flow_item_raw), error);
+       if (ret)
+               return ret;
+
+       if (!spec->pattern) {
+               rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
+                                  NULL, "pattern pointer MUST be given\n");
+               return -rte_errno;
+       }
+
+       /* Only hex string is supported; so, it must start with '0x' */
+       if (strncmp((const char *)spec->pattern, "0x", 2) != 0)  {
+               rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
+                                  NULL, "'pattern' string must start with '0x'\n");
+               return -rte_errno;
+       }
+
+       if (mask->pattern &&
+           strncmp((const char *)mask->pattern, "0x", 2) != 0)  {
+               rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
+                                  NULL, "'mask-pattern' string must start with '0x'\n");
+               return -rte_errno;
+       }
+
+       if (mask->search && spec->search) {
+               rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
+                                  NULL, "'search' option must be '0'\n");
+               return -rte_errno;
+       }
+
+       if (mask->offset && spec->offset != 0) {
+               rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
+                                  NULL, "'offset' option must be '0'\n");
+               return -rte_errno;
+       }
+
+       if (!mask->relative || !spec->relative) {
+               rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
+                                  NULL, "'relative' option must be given and enabled\n");
+               return -rte_errno;
+       }
+
+       length = spec->length & mask->length;
+       if (!length) {
+               rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
+                                  NULL, "'length' option must be given bigger than '0'\n");
+               return -rte_errno;
+       }
+
+       key_field = &flow->rule.fields[flow->rule.num_fields];
+       mrvl_alloc_key_mask(key_field);
+
+       /* pattern and length refer to string bytes. we need to convert it to
+        * values.
+        */
+       key_field->size = length;
+       ret = mrvl_string_to_hex_values(spec->pattern, key_field->key,
+                                       &key_field->size);
+       if (ret) {
+               rte_flow_error_set(error, EINVAL,
+                                  RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
+                                  NULL,
+                                  "can't convert pattern from string to hex\n");
+               return -rte_errno;
+       }
+       if (mask->pattern) {
+               ret = mrvl_string_to_hex_values(mask->pattern, key_field->mask,
+                                               &length);
+               if (ret) {
+                       rte_flow_error_set(error, EINVAL,
+                                          RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
+                                          NULL,
+                                          "can't convert mask-pattern from string to hex\n");
+                       return -rte_errno;
+               }
+       } else {
+               rte_free(key_field->mask);
+               key_field->mask = NULL;
+       }
+
+       flow->table_key.proto_field[flow->rule.num_fields].proto =
+               MV_NET_UDF;
+       udf_params =
+               &flow->table_key.proto_field[flow->rule.num_fields].field.udf;
+       udf_params->id = flow->next_udf_id++;
+       udf_params->size = key_field->size;
+       flow->table_key.key_size += key_field->size;
+
+       flow->rule.num_fields += 1;
+
+       return 0;
+}
+
 /**
  * Structure used to map specific flow pattern to the pattern parse callback
  * which will iterate over each pattern item and extract relevant data.
@@ -1212,6 +1352,7 @@ static const struct {
        { RTE_FLOW_ITEM_TYPE_IPV6, mrvl_parse_ip6 },
        { RTE_FLOW_ITEM_TYPE_TCP, mrvl_parse_tcp },
        { RTE_FLOW_ITEM_TYPE_UDP, mrvl_parse_udp },
+       { RTE_FLOW_ITEM_TYPE_RAW, mrvl_parse_raw },
        { RTE_FLOW_ITEM_TYPE_END, NULL }
 };