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Date: Mon, 24 Oct 2022 14:57:31 +0100
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>,
Alex Vesker <valex@...dia.com>
Subject: [net-next 11/14] net/mlx5: DR, Allocate htbl from its own slab allocator
From: Yevgeny Kliteynik <kliteyn@...dia.com>
SW steering allocates/frees lots of htbl structs. Create a
separate kmem_cache and allocate htbls from this allocator.
Signed-off-by: Yevgeny Kliteynik <kliteyn@...dia.com>
Reviewed-by: Alex Vesker <valex@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
.../mellanox/mlx5/core/steering/dr_domain.c | 14 +++++++++++++-
.../mellanox/mlx5/core/steering/dr_icm_pool.c | 10 ++++++++++
.../ethernet/mellanox/mlx5/core/steering/dr_ste.c | 12 +++++++++---
.../mellanox/mlx5/core/steering/dr_types.h | 4 ++++
4 files changed, 36 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_domain.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_domain.c
index 3fbcb2883a26..9a9836218c8e 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_domain.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_domain.c
@@ -68,11 +68,20 @@ static int dr_domain_init_mem_resources(struct mlx5dr_domain *dmn)
return -ENOMEM;
}
+ dmn->htbls_kmem_cache = kmem_cache_create("mlx5_dr_htbls",
+ sizeof(struct mlx5dr_ste_htbl), 0,
+ SLAB_HWCACHE_ALIGN, NULL);
+ if (!dmn->htbls_kmem_cache) {
+ mlx5dr_err(dmn, "Couldn't create hash tables kmem_cache\n");
+ ret = -ENOMEM;
+ goto free_chunks_kmem_cache;
+ }
+
dmn->ste_icm_pool = mlx5dr_icm_pool_create(dmn, DR_ICM_TYPE_STE);
if (!dmn->ste_icm_pool) {
mlx5dr_err(dmn, "Couldn't get icm memory\n");
ret = -ENOMEM;
- goto free_chunks_kmem_cache;
+ goto free_htbls_kmem_cache;
}
dmn->action_icm_pool = mlx5dr_icm_pool_create(dmn, DR_ICM_TYPE_MODIFY_ACTION);
@@ -94,6 +103,8 @@ static int dr_domain_init_mem_resources(struct mlx5dr_domain *dmn)
mlx5dr_icm_pool_destroy(dmn->action_icm_pool);
free_ste_icm_pool:
mlx5dr_icm_pool_destroy(dmn->ste_icm_pool);
+free_htbls_kmem_cache:
+ kmem_cache_destroy(dmn->htbls_kmem_cache);
free_chunks_kmem_cache:
kmem_cache_destroy(dmn->chunks_kmem_cache);
@@ -105,6 +116,7 @@ static void dr_domain_uninit_mem_resources(struct mlx5dr_domain *dmn)
mlx5dr_send_info_pool_destroy(dmn);
mlx5dr_icm_pool_destroy(dmn->action_icm_pool);
mlx5dr_icm_pool_destroy(dmn->ste_icm_pool);
+ kmem_cache_destroy(dmn->htbls_kmem_cache);
kmem_cache_destroy(dmn->chunks_kmem_cache);
}
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 be02546a7de0..ca91a0211a5c 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
@@ -470,6 +470,16 @@ void mlx5dr_icm_free_chunk(struct mlx5dr_icm_chunk *chunk)
mutex_unlock(&pool->mutex);
}
+struct mlx5dr_ste_htbl *mlx5dr_icm_pool_alloc_htbl(struct mlx5dr_icm_pool *pool)
+{
+ return kmem_cache_alloc(pool->dmn->htbls_kmem_cache, GFP_KERNEL);
+}
+
+void mlx5dr_icm_pool_free_htbl(struct mlx5dr_icm_pool *pool, struct mlx5dr_ste_htbl *htbl)
+{
+ kmem_cache_free(pool->dmn->htbls_kmem_cache, htbl);
+}
+
struct mlx5dr_icm_pool *mlx5dr_icm_pool_create(struct mlx5dr_domain *dmn,
enum mlx5dr_icm_type icm_type)
{
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 09ebd3088857..9e19a8dc9022 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste.c
@@ -491,7 +491,7 @@ struct mlx5dr_ste_htbl *mlx5dr_ste_htbl_alloc(struct mlx5dr_icm_pool *pool,
u32 num_entries;
int i;
- htbl = kzalloc(sizeof(*htbl), GFP_KERNEL);
+ htbl = mlx5dr_icm_pool_alloc_htbl(pool);
if (!htbl)
return NULL;
@@ -503,6 +503,9 @@ struct mlx5dr_ste_htbl *mlx5dr_ste_htbl_alloc(struct mlx5dr_icm_pool *pool,
htbl->lu_type = lu_type;
htbl->byte_mask = byte_mask;
htbl->refcount = 0;
+ htbl->pointing_ste = NULL;
+ htbl->ctrl.num_of_valid_entries = 0;
+ htbl->ctrl.num_of_collisions = 0;
num_entries = mlx5dr_icm_pool_get_chunk_num_of_entries(chunk);
for (i = 0; i < num_entries; i++) {
@@ -517,17 +520,20 @@ struct mlx5dr_ste_htbl *mlx5dr_ste_htbl_alloc(struct mlx5dr_icm_pool *pool,
return htbl;
out_free_htbl:
- kfree(htbl);
+ mlx5dr_icm_pool_free_htbl(pool, htbl);
return NULL;
}
int mlx5dr_ste_htbl_free(struct mlx5dr_ste_htbl *htbl)
{
+ struct mlx5dr_icm_pool *pool = htbl->chunk->buddy_mem->pool;
+
if (htbl->refcount)
return -EBUSY;
mlx5dr_icm_free_chunk(htbl->chunk);
- kfree(htbl);
+ mlx5dr_icm_pool_free_htbl(pool, htbl);
+
return 0;
}
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 4f38f0f5b352..b645c0ab9a72 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_types.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_types.h
@@ -916,6 +916,7 @@ struct mlx5dr_domain {
struct mlx5dr_send_info_pool *send_info_pool_rx;
struct mlx5dr_send_info_pool *send_info_pool_tx;
struct kmem_cache *chunks_kmem_cache;
+ struct kmem_cache *htbls_kmem_cache;
struct mlx5dr_send_ring *send_ring;
struct mlx5dr_domain_info info;
struct xarray csum_fts_xa;
@@ -1162,6 +1163,9 @@ 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);
u8 *mlx5dr_ste_get_hw_ste(struct mlx5dr_ste *ste);
+struct mlx5dr_ste_htbl *mlx5dr_icm_pool_alloc_htbl(struct mlx5dr_icm_pool *pool);
+void mlx5dr_icm_pool_free_htbl(struct mlx5dr_icm_pool *pool, struct mlx5dr_ste_htbl *htbl);
+
static inline int
mlx5dr_icm_pool_dm_type_to_entry_size(enum mlx5dr_icm_type icm_type)
{
--
2.37.3
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