[dpdk-dev] [PATCH V3 1/2] net/i40e: i40e FDIR update rate optimization data structures

[chenmin.sun@intel.com]

From: Chenmin Sun <chenmin.sun@intel.com>

This patch introduces the new data structures for i40e fdir
update rate optimization.

Signed-off-by: Chenmin Sun <chenmin.sun@intel.com>
---
 drivers/net/i40e/i40e_ethdev.h | 72 ++++++++++++++++++++++++++++------
 1 file changed, 61 insertions(+), 11 deletions(-)

diff --git a/drivers/net/i40e/i40e_ethdev.h b/drivers/net/i40e/i40e_ethdev.h
index 31ca05de9..8baa67233 100644
--- a/drivers/net/i40e/i40e_ethdev.h
+++ b/drivers/net/i40e/i40e_ethdev.h
@@ -264,6 +264,15 @@ enum i40e_flxpld_layer_idx {
 #define I40E_DEFAULT_DCB_APP_NUM    1
 #define I40E_DEFAULT_DCB_APP_PRIO   3
 
+/*
+ * Struct to store flow created.
+ */
+struct rte_flow {
+	TAILQ_ENTRY(rte_flow) node;
+	enum rte_filter_type filter_type;
+	void *rule;
+};
+
 /**
  * The overhead from MTU to max frame size.
  * Considering QinQ packet, the VLAN tag needs to be counted twice.
@@ -674,17 +683,37 @@ struct i40e_fdir_filter {
 	struct i40e_fdir_filter_conf fdir;
 };
 
+/* fdir memory pool entry */
+struct i40e_fdir_entry {
+	struct rte_flow flow;
+	uint32_t idx;
+};
+
+/* pre-allocated fdir memory pool */
+struct i40e_fdir_flow_pool {
+	/* a bitmap to manage the fdir pool */
+	struct rte_bitmap *b;
+	/* the size the pool is pf->fdir->fdir_space_size */
+	struct i40e_fdir_entry *pool;
+};
+
+#define FLOW_TO_FLOW_BITMAP(f) \
+	container_of((f), struct i40e_fdir_entry, flow)
+
 TAILQ_HEAD(i40e_fdir_filter_list, i40e_fdir_filter);
 /*
  *  A structure used to define fields of a FDIR related info.
  */
 struct i40e_fdir_info {
+#define PRG_PKT_CNT	128
+
 	struct i40e_vsi *fdir_vsi;     /* pointer to fdir VSI structure */
 	uint16_t match_counter_index;  /* Statistic counter index used for fdir*/
 	struct i40e_tx_queue *txq;
 	struct i40e_rx_queue *rxq;
 	void *prg_pkt;                 /* memory for fdir program packet */
 	uint64_t dma_addr;             /* physic address of packet memory*/
+
 	/* input set bits for each pctype */
 	uint64_t input_set[I40E_FILTER_PCTYPE_MAX];
 	/*
@@ -697,6 +726,36 @@ struct i40e_fdir_info {
 	struct i40e_fdir_filter_list fdir_list;
 	struct i40e_fdir_filter **hash_map;
 	struct rte_hash *hash_table;
+	/* An array to store the inserted rules input */
+	struct i40e_fdir_filter *fdir_filter_array;
+
+	/*
+	 * Priority ordering at filter invalidation(destroying a flow) between
+	 * "best effort" space and "guaranteed" space.
+	 *
+	 * 0 = At filter invalidation, the hardware first tries to increment the
+	 * "best effort" space. The "guaranteed" space is incremented only when
+	 * the global "best effort" space is at it max value or the "best effort"
+	 * space of the PF is at its max value.
+	 * 1 = At filter invalidation, the hardware first tries to increment its
+	 * "guaranteed" space. The "best effort" space is incremented only when
+	 * it is already at its max value.
+	 */
+	uint32_t fdir_invalprio;
+	/* the total size of the fdir, this number is the sum of the guaranteed +
+	 * shared space
+	 */
+	uint32_t fdir_space_size;
+	/* the actual number of the fdir rules in hardware, initialized as 0 */
+	uint32_t fdir_actual_cnt;
+	/* the guaranteed space of the fdir */
+	uint32_t fdir_guarantee_free_space;
+	/* the available guaranteed space, initialized as the
+	 * fdir_guarantee_free_space and dynamically maintained
+	 */
+	uint32_t fdir_guarantee_available_space;
+	/* the pre-allocated pool of the rte_flow */
+	struct i40e_fdir_flow_pool fdir_flow_pool;
 
 	/* Mark if flex pit and mask is set */
 	bool flex_pit_flag[I40E_MAX_FLXPLD_LAYER];
@@ -894,15 +953,6 @@ struct i40e_mirror_rule {
 
 TAILQ_HEAD(i40e_mirror_rule_list, i40e_mirror_rule);
 
-/*
- * Struct to store flow created.
- */
-struct rte_flow {
-	TAILQ_ENTRY(rte_flow) node;
-	enum rte_filter_type filter_type;
-	void *rule;
-};
-
 TAILQ_HEAD(i40e_flow_list, rte_flow);
 
 /* Struct to store Traffic Manager shaper profile. */
@@ -1335,8 +1385,8 @@ int i40e_add_del_fdir_filter(struct rte_eth_dev *dev,
 			     const struct rte_eth_fdir_filter *filter,
 			     bool add);
 int i40e_flow_add_del_fdir_filter(struct rte_eth_dev *dev,
-				  const struct i40e_fdir_filter_conf *filter,
-				  bool add);
+			      const struct i40e_fdir_filter_conf *filter,
+			      bool add);
 int i40e_dev_tunnel_filter_set(struct i40e_pf *pf,
 			       struct rte_eth_tunnel_filter_conf *tunnel_filter,
 			       uint8_t add);
-- 
2.17.1