netdev - [net-next 07/15] net/mlx5: DR, Some refactoring of miss address handling

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Message-Id: <20221209001420.142794-8-saeed@kernel.org>
Date:   Thu,  8 Dec 2022 16:14:12 -0800
From:   Saeed Mahameed <saeed@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>
Cc:     Saeed Mahameed <saeedm@...dia.com>, netdev@...r.kernel.org,
        Tariq Toukan <tariqt@...dia.com>,
        Yevgeny Kliteynik <kliteyn@...dia.com>,
        Erez Shitrit <erezsh@...dia.com>,
        Mark Bloch <mbloch@...dia.com>
Subject: [net-next 07/15] net/mlx5: DR, Some refactoring of miss address handling

From: Yevgeny Kliteynik <kliteyn@...dia.com>

In preparation for MATCH RANGE STE support, create a function
to set the miss address of an STE.

Signed-off-by: Yevgeny Kliteynik <kliteyn@...dia.com>
Reviewed-by: Erez Shitrit <erezsh@...dia.com>
Reviewed-by: Mark Bloch <mbloch@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 .../mellanox/mlx5/core/steering/dr_rule.c     | 24 +++++++++++--------
 1 file changed, 14 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_rule.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_rule.c
index 7879991048ce..3351b2a1ba18 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_rule.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_rule.c
@@ -35,16 +35,25 @@ static int dr_rule_append_to_miss_list(struct mlx5dr_domain *dmn,
 	return 0;
 }
 
+static void dr_rule_set_last_ste_miss_addr(struct mlx5dr_matcher *matcher,
+					   struct mlx5dr_matcher_rx_tx *nic_matcher,
+					   u8 *hw_ste)
+{
+	struct mlx5dr_ste_ctx *ste_ctx = matcher->tbl->dmn->ste_ctx;
+	u64 icm_addr;
+
+	icm_addr = mlx5dr_icm_pool_get_chunk_icm_addr(nic_matcher->e_anchor->chunk);
+	mlx5dr_ste_set_miss_addr(ste_ctx, hw_ste, icm_addr);
+}
+
 static struct mlx5dr_ste *
 dr_rule_create_collision_htbl(struct mlx5dr_matcher *matcher,
 			      struct mlx5dr_matcher_rx_tx *nic_matcher,
 			      u8 *hw_ste)
 {
 	struct mlx5dr_domain *dmn = matcher->tbl->dmn;
-	struct mlx5dr_ste_ctx *ste_ctx = dmn->ste_ctx;
 	struct mlx5dr_ste_htbl *new_htbl;
 	struct mlx5dr_ste *ste;
-	u64 icm_addr;
 
 	/* Create new table for miss entry */
 	new_htbl = mlx5dr_ste_htbl_alloc(dmn->ste_icm_pool,
@@ -58,8 +67,7 @@ dr_rule_create_collision_htbl(struct mlx5dr_matcher *matcher,
 
 	/* One and only entry, never grows */
 	ste = new_htbl->chunk->ste_arr;
-	icm_addr = mlx5dr_icm_pool_get_chunk_icm_addr(nic_matcher->e_anchor->chunk);
-	mlx5dr_ste_set_miss_addr(ste_ctx, hw_ste, icm_addr);
+	dr_rule_set_last_ste_miss_addr(matcher, nic_matcher, hw_ste);
 	mlx5dr_htbl_get(new_htbl);
 
 	return ste;
@@ -241,7 +249,6 @@ dr_rule_rehash_copy_ste(struct mlx5dr_matcher *matcher,
 	bool use_update_list = false;
 	u8 hw_ste[DR_STE_SIZE] = {};
 	struct mlx5dr_ste *new_ste;
-	u64 icm_addr;
 	int new_idx;
 	u8 sb_idx;
 
@@ -250,9 +257,8 @@ dr_rule_rehash_copy_ste(struct mlx5dr_matcher *matcher,
 	mlx5dr_ste_set_bit_mask(hw_ste, nic_matcher->ste_builder[sb_idx].bit_mask);
 
 	/* Copy STE control and tag */
-	icm_addr = mlx5dr_icm_pool_get_chunk_icm_addr(nic_matcher->e_anchor->chunk);
 	memcpy(hw_ste, mlx5dr_ste_get_hw_ste(cur_ste), DR_STE_SIZE_REDUCED);
-	mlx5dr_ste_set_miss_addr(dmn->ste_ctx, hw_ste, icm_addr);
+	dr_rule_set_last_ste_miss_addr(matcher, nic_matcher, hw_ste);
 
 	new_idx = mlx5dr_ste_calc_hash_index(hw_ste, new_htbl);
 	new_ste = &new_htbl->chunk->ste_arr[new_idx];
@@ -773,7 +779,6 @@ static int dr_rule_handle_empty_entry(struct mlx5dr_matcher *matcher,
 {
 	struct mlx5dr_domain *dmn = matcher->tbl->dmn;
 	struct mlx5dr_ste_send_info *ste_info;
-	u64 icm_addr;
 
 	/* Take ref on table, only on first time this ste is used */
 	mlx5dr_htbl_get(cur_htbl);
@@ -781,8 +786,7 @@ static int dr_rule_handle_empty_entry(struct mlx5dr_matcher *matcher,
 	/* new entry -> new branch */
 	list_add_tail(&ste->miss_list_node, miss_list);
 
-	icm_addr = mlx5dr_icm_pool_get_chunk_icm_addr(nic_matcher->e_anchor->chunk);
-	mlx5dr_ste_set_miss_addr(dmn->ste_ctx, hw_ste, icm_addr);
+	dr_rule_set_last_ste_miss_addr(matcher, nic_matcher, hw_ste);
 
 	ste->ste_chain_location = ste_location;
 
-- 
2.38.1