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Date: Thu, 17 Mar 2022 11:54:19 -0700
From: Saeed Mahameed <saeed@...nel.org>
To: "David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>
Cc: netdev@...r.kernel.org, Rongwei Liu <rongweil@...dia.com>,
Shun Hao <shunh@...dia.com>,
Yevgeny Kliteynik <kliteyn@...dia.com>,
Saeed Mahameed <saeedm@...dia.com>
Subject: [net-next 10/15] net/mlx5: DR, Remove num_of_entries byte_size from struct mlx5_dr_icm_chunk
From: Rongwei Liu <rongweil@...dia.com>
Target to reduce the memory consumption in large scale of flow rules.
They can be calculated quickly from buddy memory pool.
1. num_of_entries calls dr_icm_pool_get_chunk_num_of_entries().
2. byte_size calls dr_icm_pool_get_chunk_byte_size().
Use chunk size in dr_icm_chunk to speed up and the one in dr_ste_htbl
will be removed in the upcoming commit.
This commit reduce 8 bytes from struct mlx5_dr_icm_chunk and its
current size is 56 bytes.
Signed-off-by: Rongwei Liu <rongweil@...dia.com>
Reviewed-by: Shun Hao <shunh@...dia.com>
Reviewed-by: Yevgeny Kliteynik <kliteyn@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
.../mellanox/mlx5/core/steering/dr_icm_pool.c | 34 ++++++++++++-------
.../mellanox/mlx5/core/steering/dr_rule.c | 2 +-
.../mellanox/mlx5/core/steering/dr_send.c | 12 +++----
.../mellanox/mlx5/core/steering/dr_ste.c | 16 +++++----
.../mellanox/mlx5/core/steering/dr_types.h | 5 +--
5 files changed, 42 insertions(+), 27 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_icm_pool.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_icm_pool.c
index 539af89da629..4ca67fa24cc6 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_icm_pool.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_icm_pool.c
@@ -76,6 +76,17 @@ u64 mlx5dr_icm_pool_get_chunk_icm_addr(struct mlx5dr_icm_chunk *chunk)
return (u64)chunk->buddy_mem->icm_mr->icm_start_addr + size * chunk->seg;
}
+u32 mlx5dr_icm_pool_get_chunk_byte_size(struct mlx5dr_icm_chunk *chunk)
+{
+ return mlx5dr_icm_pool_chunk_size_to_byte(chunk->size,
+ chunk->buddy_mem->pool->icm_type);
+}
+
+u32 mlx5dr_icm_pool_get_chunk_num_of_entries(struct mlx5dr_icm_chunk *chunk)
+{
+ return mlx5dr_icm_pool_chunk_size_to_entries(chunk->size);
+}
+
static struct mlx5dr_icm_mr *
dr_icm_pool_mr_create(struct mlx5dr_icm_pool *pool)
{
@@ -177,12 +188,13 @@ static void dr_icm_chunk_ste_init(struct mlx5dr_icm_chunk *chunk, int offset)
static void dr_icm_chunk_ste_cleanup(struct mlx5dr_icm_chunk *chunk)
{
+ int num_of_entries = mlx5dr_icm_pool_get_chunk_num_of_entries(chunk);
struct mlx5dr_icm_buddy_mem *buddy = chunk->buddy_mem;
memset(chunk->hw_ste_arr, 0,
- chunk->num_of_entries * dr_icm_buddy_get_ste_size(buddy));
+ num_of_entries * dr_icm_buddy_get_ste_size(buddy));
memset(chunk->ste_arr, 0,
- chunk->num_of_entries * sizeof(chunk->ste_arr[0]));
+ num_of_entries * sizeof(chunk->ste_arr[0]));
}
static enum mlx5dr_icm_type
@@ -196,7 +208,7 @@ static void dr_icm_chunk_destroy(struct mlx5dr_icm_chunk *chunk,
{
enum mlx5dr_icm_type icm_type = get_chunk_icm_type(chunk);
- buddy->used_memory -= chunk->byte_size;
+ buddy->used_memory -= mlx5dr_icm_pool_get_chunk_byte_size(chunk);
list_del(&chunk->chunk_list);
if (icm_type == DR_ICM_TYPE_STE)
@@ -317,17 +329,14 @@ dr_icm_chunk_create(struct mlx5dr_icm_pool *pool,
offset = mlx5dr_icm_pool_dm_type_to_entry_size(pool->icm_type) * seg;
- chunk->num_of_entries =
- mlx5dr_icm_pool_chunk_size_to_entries(chunk_size);
- chunk->byte_size =
- mlx5dr_icm_pool_chunk_size_to_byte(chunk_size, pool->icm_type);
chunk->seg = seg;
+ chunk->size = chunk_size;
chunk->buddy_mem = buddy_mem_pool;
if (pool->icm_type == DR_ICM_TYPE_STE)
dr_icm_chunk_ste_init(chunk, offset);
- buddy_mem_pool->used_memory += chunk->byte_size;
+ buddy_mem_pool->used_memory += mlx5dr_icm_pool_get_chunk_byte_size(chunk);
INIT_LIST_HEAD(&chunk->chunk_list);
/* chunk now is part of the used_list */
@@ -351,6 +360,7 @@ static bool dr_icm_pool_is_sync_required(struct mlx5dr_icm_pool *pool)
static int dr_icm_pool_sync_all_buddy_pools(struct mlx5dr_icm_pool *pool)
{
struct mlx5dr_icm_buddy_mem *buddy, *tmp_buddy;
+ u32 num_entries;
int err;
err = mlx5dr_cmd_sync_steering(pool->dmn->mdev);
@@ -363,9 +373,9 @@ static int dr_icm_pool_sync_all_buddy_pools(struct mlx5dr_icm_pool *pool)
struct mlx5dr_icm_chunk *chunk, *tmp_chunk;
list_for_each_entry_safe(chunk, tmp_chunk, &buddy->hot_list, chunk_list) {
- mlx5dr_buddy_free_mem(buddy, chunk->seg,
- ilog2(chunk->num_of_entries));
- pool->hot_memory_size -= chunk->byte_size;
+ num_entries = mlx5dr_icm_pool_get_chunk_num_of_entries(chunk);
+ mlx5dr_buddy_free_mem(buddy, chunk->seg, ilog2(num_entries));
+ pool->hot_memory_size -= mlx5dr_icm_pool_get_chunk_byte_size(chunk);
dr_icm_chunk_destroy(chunk, buddy);
}
@@ -463,7 +473,7 @@ void mlx5dr_icm_free_chunk(struct mlx5dr_icm_chunk *chunk)
/* move the memory to the waiting list AKA "hot" */
mutex_lock(&pool->mutex);
list_move_tail(&chunk->chunk_list, &buddy->hot_list);
- pool->hot_memory_size += chunk->byte_size;
+ pool->hot_memory_size += mlx5dr_icm_pool_get_chunk_byte_size(chunk);
/* Check if we have chunks that are waiting for sync-ste */
if (dr_icm_pool_is_sync_required(pool))
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 e76c1fda2ac9..91be9d9d95a8 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_rule.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_rule.c
@@ -450,7 +450,7 @@ dr_rule_rehash_htbl(struct mlx5dr_rule *rule,
mlx5dr_ste_set_hit_addr(dmn->ste_ctx,
prev_htbl->ste_arr[0].hw_ste,
mlx5dr_icm_pool_get_chunk_icm_addr(new_htbl->chunk),
- new_htbl->chunk->num_of_entries);
+ mlx5dr_icm_pool_get_chunk_num_of_entries(new_htbl->chunk));
ste_to_update = &prev_htbl->ste_arr[0];
} else {
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_send.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_send.c
index 57765d231993..e0470dbd3116 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_send.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_send.c
@@ -407,17 +407,17 @@ static int dr_get_tbl_copy_details(struct mlx5dr_domain *dmn,
int *iterations,
int *num_stes)
{
+ u32 chunk_byte_size = mlx5dr_icm_pool_get_chunk_byte_size(htbl->chunk);
int alloc_size;
- if (htbl->chunk->byte_size > dmn->send_ring->max_post_send_size) {
- *iterations = htbl->chunk->byte_size /
- dmn->send_ring->max_post_send_size;
+ if (chunk_byte_size > dmn->send_ring->max_post_send_size) {
+ *iterations = chunk_byte_size / dmn->send_ring->max_post_send_size;
*byte_size = dmn->send_ring->max_post_send_size;
alloc_size = *byte_size;
*num_stes = *byte_size / DR_STE_SIZE;
} else {
*iterations = 1;
- *num_stes = htbl->chunk->num_of_entries;
+ *num_stes = mlx5dr_icm_pool_get_chunk_num_of_entries(htbl->chunk);
alloc_size = *num_stes * DR_STE_SIZE;
}
@@ -462,7 +462,7 @@ int mlx5dr_send_postsend_htbl(struct mlx5dr_domain *dmn,
struct mlx5dr_ste_htbl *htbl,
u8 *formatted_ste, u8 *mask)
{
- u32 byte_size = htbl->chunk->byte_size;
+ u32 byte_size = mlx5dr_icm_pool_get_chunk_byte_size(htbl->chunk);
int num_stes_per_iter;
int iterations;
u8 *data;
@@ -530,7 +530,7 @@ int mlx5dr_send_postsend_formatted_htbl(struct mlx5dr_domain *dmn,
u8 *ste_init_data,
bool update_hw_ste)
{
- u32 byte_size = htbl->chunk->byte_size;
+ u32 byte_size = mlx5dr_icm_pool_get_chunk_byte_size(htbl->chunk);
int iterations;
int num_stes;
u8 *copy_dst;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste.c
index 0208b859205c..3ff568e80e0e 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste.c
@@ -25,6 +25,7 @@ bool mlx5dr_ste_supp_ttl_cs_recalc(struct mlx5dr_cmd_caps *caps)
u32 mlx5dr_ste_calc_hash_index(u8 *hw_ste_p, struct mlx5dr_ste_htbl *htbl)
{
+ u32 num_entries = mlx5dr_icm_pool_get_chunk_num_of_entries(htbl->chunk);
struct dr_hw_ste_format *hw_ste = (struct dr_hw_ste_format *)hw_ste_p;
u8 masked[DR_STE_SIZE_TAG] = {};
u32 crc32, index;
@@ -32,7 +33,7 @@ u32 mlx5dr_ste_calc_hash_index(u8 *hw_ste_p, struct mlx5dr_ste_htbl *htbl)
int i;
/* Don't calculate CRC if the result is predicted */
- if (htbl->chunk->num_of_entries == 1 || htbl->byte_mask == 0)
+ if (num_entries == 1 || htbl->byte_mask == 0)
return 0;
/* Mask tag using byte mask, bit per byte */
@@ -45,7 +46,7 @@ u32 mlx5dr_ste_calc_hash_index(u8 *hw_ste_p, struct mlx5dr_ste_htbl *htbl)
}
crc32 = dr_ste_crc32_calc(masked, DR_STE_SIZE_TAG);
- index = crc32 & (htbl->chunk->num_of_entries - 1);
+ index = crc32 & (num_entries - 1);
return index;
}
@@ -143,7 +144,7 @@ static void dr_ste_always_hit_htbl(struct mlx5dr_ste_ctx *ste_ctx,
ste_ctx->set_byte_mask(hw_ste, next_htbl->byte_mask);
ste_ctx->set_next_lu_type(hw_ste, next_htbl->lu_type);
ste_ctx->set_hit_addr(hw_ste, mlx5dr_icm_pool_get_chunk_icm_addr(chunk),
- chunk->num_of_entries);
+ mlx5dr_icm_pool_get_chunk_num_of_entries(chunk));
dr_ste_set_always_hit((struct dr_hw_ste_format *)ste->hw_ste);
}
@@ -367,9 +368,10 @@ void mlx5dr_ste_set_hit_addr_by_next_htbl(struct mlx5dr_ste_ctx *ste_ctx,
struct mlx5dr_ste_htbl *next_htbl)
{
u64 icm_addr = mlx5dr_icm_pool_get_chunk_icm_addr(next_htbl->chunk);
- struct mlx5dr_icm_chunk *chunk = next_htbl->chunk;
+ u32 num_entries =
+ mlx5dr_icm_pool_get_chunk_num_of_entries(next_htbl->chunk);
- ste_ctx->set_hit_addr(hw_ste, icm_addr, chunk->num_of_entries);
+ ste_ctx->set_hit_addr(hw_ste, icm_addr, num_entries);
}
void mlx5dr_ste_prepare_for_postsend(struct mlx5dr_ste_ctx *ste_ctx,
@@ -474,6 +476,7 @@ struct mlx5dr_ste_htbl *mlx5dr_ste_htbl_alloc(struct mlx5dr_icm_pool *pool,
{
struct mlx5dr_icm_chunk *chunk;
struct mlx5dr_ste_htbl *htbl;
+ u32 num_entries;
int i;
htbl = kzalloc(sizeof(*htbl), GFP_KERNEL);
@@ -491,8 +494,9 @@ struct mlx5dr_ste_htbl *mlx5dr_ste_htbl_alloc(struct mlx5dr_icm_pool *pool,
htbl->hw_ste_arr = chunk->hw_ste_arr;
htbl->miss_list = chunk->miss_list;
htbl->refcount = 0;
+ num_entries = mlx5dr_icm_pool_get_chunk_num_of_entries(chunk);
- for (i = 0; i < chunk->num_of_entries; i++) {
+ for (i = 0; i < num_entries; i++) {
struct mlx5dr_ste *ste = &htbl->ste_arr[i];
ste->hw_ste = htbl->hw_ste_arr + i * DR_STE_SIZE_REDUCED;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_types.h b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_types.h
index 4fe0c8c623ce..9660296d36aa 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_types.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_types.h
@@ -1097,13 +1097,12 @@ int mlx5dr_rule_get_reverse_rule_members(struct mlx5dr_ste **ste_arr,
struct mlx5dr_icm_chunk {
struct mlx5dr_icm_buddy_mem *buddy_mem;
struct list_head chunk_list;
- u32 num_of_entries;
- u32 byte_size;
/* indicates the index of this chunk in the whole memory,
* used for deleting the chunk from the buddy
*/
unsigned int seg;
+ enum mlx5dr_icm_chunk_size size;
/* Memory optimisation */
struct mlx5dr_ste *ste_arr;
@@ -1146,6 +1145,8 @@ int mlx5dr_matcher_select_builders(struct mlx5dr_matcher *matcher,
u64 mlx5dr_icm_pool_get_chunk_mr_addr(struct mlx5dr_icm_chunk *chunk);
u32 mlx5dr_icm_pool_get_chunk_rkey(struct mlx5dr_icm_chunk *chunk);
u64 mlx5dr_icm_pool_get_chunk_icm_addr(struct mlx5dr_icm_chunk *chunk);
+u32 mlx5dr_icm_pool_get_chunk_num_of_entries(struct mlx5dr_icm_chunk *chunk);
+u32 mlx5dr_icm_pool_get_chunk_byte_size(struct mlx5dr_icm_chunk *chunk);
static inline int
mlx5dr_icm_pool_dm_type_to_entry_size(enum mlx5dr_icm_type icm_type)
--
2.35.1
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