[dpdk-dev] [PATCH v2 1/3] net/ice/base: support add HW profile for RSS raw flow

[Ting Xu <ting.xu@intel.com>]

Based on the parser library, we can directly set HW profile and
associate VSI for RSS raw flows. Add symmetric hash configuration
for raw flow.

Signed-off-by: Ting Xu <ting.xu@intel.com>
---
 drivers/net/ice/base/ice_flow.c | 109 ++++++++++++++++++++++++++++++++
 drivers/net/ice/base/ice_flow.h |  16 +++++
 2 files changed, 125 insertions(+)

diff --git a/drivers/net/ice/base/ice_flow.c b/drivers/net/ice/base/ice_flow.c
index f699dbbc74..da27d157c0 100644
--- a/drivers/net/ice/base/ice_flow.c
+++ b/drivers/net/ice/base/ice_flow.c
@@ -4071,6 +4071,115 @@ ice_rss_update_symm(struct ice_hw *hw,
 	}
 }
 
+/**
+ * ice_rss_cfg_raw_symm - configure symmetric hash parameters
+ * for raw pattern
+ * @hw: pointer to the hardware structure
+ * @prof: pointer to parser profile
+ * @prof_id: profile ID
+ *
+ * Calculate symmetric hash parameters based on input protocol type.
+ */
+static void
+ice_rss_cfg_raw_symm(struct ice_hw *hw,
+		     struct ice_parser_profile *prof, u64 prof_id)
+{
+	u8 src_idx, dst_idx, proto_id;
+	int len, i = 0;
+
+	while (i < prof->fv_num) {
+		proto_id = prof->fv[i].proto_id;
+
+		switch (proto_id) {
+		case ICE_PROT_IPV4_OF_OR_S:
+			len = ICE_FLOW_FLD_SZ_IPV4_ADDR /
+			      ICE_FLOW_FV_EXTRACT_SZ;
+			if (prof->fv[i].offset ==
+			    ICE_FLOW_FIELD_IPV4_SRC_OFFSET &&
+			    prof->fv[i + len].proto_id == proto_id &&
+			    prof->fv[i + len].offset ==
+			    ICE_FLOW_FIELD_IPV4_DST_OFFSET) {
+				src_idx = i;
+				dst_idx = i + len;
+				i += 2 * len;
+				break;
+			}
+			i++;
+			continue;
+		case ICE_PROT_IPV6_OF_OR_S:
+			len = ICE_FLOW_FLD_SZ_IPV6_ADDR /
+			      ICE_FLOW_FV_EXTRACT_SZ;
+			if (prof->fv[i].offset ==
+			    ICE_FLOW_FIELD_IPV6_SRC_OFFSET &&
+			    prof->fv[i + len].proto_id == proto_id &&
+			    prof->fv[i + len].offset ==
+			    ICE_FLOW_FIELD_IPV6_DST_OFFSET) {
+				src_idx = i;
+				dst_idx = i + len;
+				i += 2 * len;
+				break;
+			}
+			i++;
+			continue;
+		case ICE_PROT_TCP_IL:
+		case ICE_PROT_UDP_IL_OR_S:
+		case ICE_PROT_SCTP_IL:
+			len = ICE_FLOW_FLD_SZ_PORT /
+			      ICE_FLOW_FV_EXTRACT_SZ;
+			if (prof->fv[i].offset ==
+			    ICE_FLOW_FIELD_SRC_PORT_OFFSET &&
+			    prof->fv[i + len].proto_id == proto_id &&
+			    prof->fv[i + len].offset ==
+			    ICE_FLOW_FIELD_DST_PORT_OFFSET) {
+				src_idx = i;
+				dst_idx = i + len;
+				i += 2 * len;
+				break;
+			}
+			i++;
+			continue;
+		default:
+			i++;
+			continue;
+		}
+		ice_rss_config_xor(hw, prof_id, src_idx, dst_idx, len);
+	}
+}
+
+/* Max registers index per packet profile */
+#define ICE_SYMM_REG_INDEX_MAX 6
+
+/**
+ * ice_rss_update_raw_symm - update symmetric hash configuration
+ * for raw pattern
+ * @hw: pointer to the hardware structure
+ * @cfg: configure parameters for raw pattern
+ * @id: profile tracking ID
+ *
+ * Update symmetric hash configuration for raw pattern if required.
+ * Otherwise only clear to default.
+ */
+void
+ice_rss_update_raw_symm(struct ice_hw *hw,
+			struct ice_rss_raw_cfg *cfg, u64 id)
+{
+	struct ice_prof_map *map;
+	u8 prof_id, m;
+
+	ice_acquire_lock(&hw->blk[ICE_BLK_RSS].es.prof_map_lock);
+	map = ice_search_prof_id(hw, ICE_BLK_RSS, id);
+	if (map)
+		prof_id = map->prof_id;
+	ice_release_lock(&hw->blk[ICE_BLK_RSS].es.prof_map_lock);
+	if (!map)
+		return;
+	/* clear to default */
+	for (m = 0; m < ICE_SYMM_REG_INDEX_MAX; m++)
+		wr32(hw, GLQF_HSYMM(prof_id, m), 0);
+	if (cfg->symm)
+		ice_rss_cfg_raw_symm(hw, &cfg->prof, prof_id);
+}
+
 /**
  * ice_add_rss_cfg_sync - add an RSS configuration
  * @hw: pointer to the hardware structure
diff --git a/drivers/net/ice/base/ice_flow.h b/drivers/net/ice/base/ice_flow.h
index dea7b3c0e8..aac7ead891 100644
--- a/drivers/net/ice/base/ice_flow.h
+++ b/drivers/net/ice/base/ice_flow.h
@@ -149,6 +149,13 @@
 #define ICE_FLOW_HASH_NAT_T_ESP_IPV6_SPI \
 	(ICE_FLOW_HASH_IPV6 | ICE_FLOW_HASH_NAT_T_ESP_SPI)
 
+#define ICE_FLOW_FIELD_IPV4_SRC_OFFSET 12
+#define ICE_FLOW_FIELD_IPV4_DST_OFFSET 16
+#define ICE_FLOW_FIELD_IPV6_SRC_OFFSET 8
+#define ICE_FLOW_FIELD_IPV6_DST_OFFSET 24
+#define ICE_FLOW_FIELD_SRC_PORT_OFFSET 0
+#define ICE_FLOW_FIELD_DST_PORT_OFFSET 2
+
 /* Protocol header fields within a packet segment. A segment consists of one or
  * more protocol headers that make up a logical group of protocol headers. Each
  * logical group of protocol headers encapsulates or is encapsulated using/by
@@ -493,11 +500,18 @@ struct ice_flow_prof {
 	struct ice_flow_action *acts;
 };
 
+struct ice_rss_raw_cfg {
+	struct ice_parser_profile prof;
+	bool raw_ena;
+	bool symm;
+};
+
 struct ice_rss_cfg {
 	struct LIST_ENTRY_TYPE l_entry;
 	/* bitmap of VSIs added to the RSS entry */
 	ice_declare_bitmap(vsis, ICE_MAX_VSI);
 	struct ice_rss_hash_cfg hash;
+	struct ice_rss_raw_cfg raw;
 };
 
 enum ice_flow_action_type {
@@ -585,5 +599,7 @@ ice_add_rss_cfg(struct ice_hw *hw, u16 vsi_handle,
 enum ice_status
 ice_rem_rss_cfg(struct ice_hw *hw, u16 vsi_handle,
 		const struct ice_rss_hash_cfg *cfg);
+void ice_rss_update_raw_symm(struct ice_hw *hw,
+			struct ice_rss_raw_cfg *cfg, u64 id);
 u64 ice_get_rss_cfg(struct ice_hw *hw, u16 vsi_handle, u32 hdrs);
 #endif /* _ICE_FLOW_H_ */
-- 
2.17.1