avf: support generic flow

Support generic flow in native avf.

Enable necessary RSS hash function for generic flow. Extend some
structures and functions from for FDIR only to for both RSS and FDIR
flows. Modify virtual channel message to align with ice kernel driver.

Add functions to parse generic flow patterns. The parsing results will
be delivered to the kernel driver and create corresponding flow rules.

Type: feature
Signed-off-by: Ting Xu <ting.xu@intel.com>
Change-Id: I82ce102a21993f1bae8a8bf23e491d5e1c261f61

1 files changed, 141 insertions, 0 deletions

diff --git a/src/plugins/avf/avf_rss_lib.c b/src/plugins/avf/avf_rss_lib.c
new file mode 100644
index 00000000000..45843bdb00d
--- /dev/null
+++ b/src/plugins/avf/avf_rss_lib.c
@@ -0,0 +1,141 @@
+/*
+ *------------------------------------------------------------------
+ * Copyright (c) 2022 Intel and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *------------------------------------------------------------------
+ */
+
+#include <vppinfra/mem.h>
+#include "avf_advanced_flow.h"
+
+int
+avf_rss_cfg_create (struct virtchnl_rss_cfg **rss_cfg, int tunnel_level)
+{
+  *rss_cfg = clib_mem_alloc (sizeof (**rss_cfg));
+  if ((*rss_cfg) == NULL)
+    return -1;
+
+  clib_memset (*rss_cfg, 0, sizeof (**rss_cfg));
+
+  (*rss_cfg)->proto_hdrs.tunnel_level = tunnel_level;
+
+  return 0;
+}
+
+int
+avf_rss_rcfg_destroy (struct virtchnl_rss_cfg *rss_cfg)
+{
+  clib_mem_free (rss_cfg);
+
+  return 0;
+}
+
+int
+avf_rss_parse_action (const struct avf_flow_action actions[],
+		      struct virtchnl_rss_cfg *rss_cfg,
+		      struct avf_flow_error *error)
+{
+  const struct avf_flow_action_rss *rss;
+  int ret;
+
+  rss = actions->conf;
+
+  if (rss->func == AVF_ETH_HASH_FUNCTION_SIMPLE_XOR)
+    {
+      rss_cfg->rss_algorithm = VIRTCHNL_RSS_ALG_XOR_ASYMMETRIC;
+      ret = avf_flow_error_set (error, AVF_FAILURE, AVF_FLOW_ERROR_TYPE_ACTION,
+				actions, "simple xor is not supported.");
+      return ret;
+    }
+  else if (rss->func == AVF_ETH_HASH_FUNCTION_SYMMETRIC_TOEPLITZ)
+    {
+      rss_cfg->rss_algorithm = VIRTCHNL_RSS_ALG_TOEPLITZ_SYMMETRIC;
+    }
+  else
+    {
+      rss_cfg->rss_algorithm = VIRTCHNL_RSS_ALG_TOEPLITZ_ASYMMETRIC;
+    }
+
+  return 0;
+}
+
+int
+avf_rss_parse_generic_pattern (struct virtchnl_rss_cfg *rss_cfg,
+			       struct avf_flow_item avf_items[],
+			       struct avf_flow_error *error)
+{
+  struct avf_flow_item *item = avf_items;
+  u8 *pkt_buf, *msk_buf;
+  u16 spec_len, pkt_len;
+
+  spec_len = clib_strnlen (item->spec, VIRTCHNL_MAX_SIZE_GEN_PACKET);
+  pkt_len = spec_len / 2;
+
+  pkt_buf = clib_mem_alloc (pkt_len);
+  msk_buf = clib_mem_alloc (pkt_len);
+
+  avf_parse_generic_pattern (item, pkt_buf, msk_buf, spec_len);
+
+  clib_memcpy (rss_cfg->proto_hdrs.raw.spec, pkt_buf, pkt_len);
+  clib_memcpy (rss_cfg->proto_hdrs.raw.mask, msk_buf, pkt_len);
+
+  rss_cfg->proto_hdrs.count = 0;
+  rss_cfg->proto_hdrs.tunnel_level = 0;
+  rss_cfg->proto_hdrs.raw.pkt_len = pkt_len;
+
+  clib_mem_free (pkt_buf);
+  clib_mem_free (msk_buf);
+
+  return 0;
+}
+
+/* Used for common flow creation */
+int
+avf_rss_parse_pattern (struct virtchnl_rss_cfg *rss_cfg,
+		       struct avf_flow_item avf_items[],
+		       struct avf_flow_error *error)
+{
+  return -1;
+}
+
+int
+avf_rss_rule_create (struct avf_flow_vc_ctx *ctx,
+		     struct virtchnl_rss_cfg *rss_cfg)
+{
+  int ret;
+
+  ret = ctx->vc_op (ctx->vc_hdl, VIRTCHNL_ADV_OP_ADD_RSS_CFG, rss_cfg,
+		    sizeof (*rss_cfg), 0, 0);
+
+  return ret;
+}
+
+int
+avf_rss_rule_destroy (struct avf_flow_vc_ctx *ctx,
+		      struct virtchnl_rss_cfg *rss_cfg)
+{
+  int ret;
+
+  ret = ctx->vc_op (ctx->vc_hdl, VIRTCHNL_ADV_OP_DEL_RSS_CFG, rss_cfg,
+		    sizeof (*rss_cfg), 0, 0);
+
+  return ret;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */