From c33fbe949f9f27a74d11d919cb508fe0c0948568 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Wed, 18 Mar 2020 15:48:51 +0200 Subject: [PATCH] mlxsw: spectrum_cnt: Move sub_pools under per-instance pool struct Currently, the global static array of subpools is used. Make it per-instance as multiple instances of the mlxsw driver can have different values. Signed-off-by: Jiri Pirko Signed-off-by: Ido Schimmel Signed-off-by: David S. Miller --- .../ethernet/mellanox/mlxsw/spectrum_cnt.c | 45 +++++++++++-------- 1 file changed, 27 insertions(+), 18 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.c index 37811181586a..4cdabde47dd0 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.c @@ -18,10 +18,11 @@ struct mlxsw_sp_counter_pool { unsigned int pool_size; unsigned long *usage; /* Usage bitmap */ spinlock_t counter_pool_lock; /* Protects counter pool allocations */ - struct mlxsw_sp_counter_sub_pool *sub_pools; + unsigned int sub_pools_count; + struct mlxsw_sp_counter_sub_pool sub_pools[]; }; -static struct mlxsw_sp_counter_sub_pool mlxsw_sp_counter_sub_pools[] = { +static const struct mlxsw_sp_counter_sub_pool mlxsw_sp_counter_sub_pools[] = { [MLXSW_SP_COUNTER_SUB_POOL_FLOW] = { .bank_count = 6, }, @@ -32,6 +33,7 @@ static struct mlxsw_sp_counter_sub_pool mlxsw_sp_counter_sub_pools[] = { static int mlxsw_sp_counter_pool_validate(struct mlxsw_sp *mlxsw_sp) { + struct mlxsw_sp_counter_pool *pool = mlxsw_sp->counter_pool; unsigned int total_bank_config = 0; unsigned int pool_size; unsigned int bank_size; @@ -40,8 +42,8 @@ static int mlxsw_sp_counter_pool_validate(struct mlxsw_sp *mlxsw_sp) pool_size = MLXSW_CORE_RES_GET(mlxsw_sp->core, COUNTER_POOL_SIZE); bank_size = MLXSW_CORE_RES_GET(mlxsw_sp->core, COUNTER_BANK_SIZE); /* Check config is valid, no bank over subscription */ - for (i = 0; i < ARRAY_SIZE(mlxsw_sp_counter_sub_pools); i++) - total_bank_config += mlxsw_sp_counter_sub_pools[i].bank_count; + for (i = 0; i < pool->sub_pools_count; i++) + total_bank_config += pool->sub_pools[i].bank_count; if (total_bank_config > pool_size / bank_size + 1) return -EINVAL; return 0; @@ -49,16 +51,17 @@ static int mlxsw_sp_counter_pool_validate(struct mlxsw_sp *mlxsw_sp) static int mlxsw_sp_counter_sub_pools_prepare(struct mlxsw_sp *mlxsw_sp) { + struct mlxsw_sp_counter_pool *pool = mlxsw_sp->counter_pool; struct mlxsw_sp_counter_sub_pool *sub_pool; /* Prepare generic flow pool*/ - sub_pool = &mlxsw_sp_counter_sub_pools[MLXSW_SP_COUNTER_SUB_POOL_FLOW]; + sub_pool = &pool->sub_pools[MLXSW_SP_COUNTER_SUB_POOL_FLOW]; if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, COUNTER_SIZE_PACKETS_BYTES)) return -EIO; sub_pool->entry_size = MLXSW_CORE_RES_GET(mlxsw_sp->core, COUNTER_SIZE_PACKETS_BYTES); /* Prepare erif pool*/ - sub_pool = &mlxsw_sp_counter_sub_pools[MLXSW_SP_COUNTER_SUB_POOL_RIF]; + sub_pool = &pool->sub_pools[MLXSW_SP_COUNTER_SUB_POOL_RIF]; if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, COUNTER_SIZE_ROUTER_BASIC)) return -EIO; sub_pool->entry_size = MLXSW_CORE_RES_GET(mlxsw_sp->core, @@ -68,6 +71,7 @@ static int mlxsw_sp_counter_sub_pools_prepare(struct mlxsw_sp *mlxsw_sp) int mlxsw_sp_counter_pool_init(struct mlxsw_sp *mlxsw_sp) { + unsigned int sub_pools_count = ARRAY_SIZE(mlxsw_sp_counter_sub_pools); struct mlxsw_sp_counter_sub_pool *sub_pool; struct mlxsw_sp_counter_pool *pool; unsigned int base_index; @@ -80,18 +84,23 @@ int mlxsw_sp_counter_pool_init(struct mlxsw_sp *mlxsw_sp) !MLXSW_CORE_RES_VALID(mlxsw_sp->core, COUNTER_BANK_SIZE)) return -EIO; + pool = kzalloc(struct_size(pool, sub_pools, sub_pools_count), + GFP_KERNEL); + if (!pool) + return -ENOMEM; + mlxsw_sp->counter_pool = pool; + memcpy(pool->sub_pools, mlxsw_sp_counter_sub_pools, + sub_pools_count * sizeof(*sub_pool)); + pool->sub_pools_count = sub_pools_count; + spin_lock_init(&pool->counter_pool_lock); + err = mlxsw_sp_counter_pool_validate(mlxsw_sp); if (err) - return err; + goto err_pool_validate; err = mlxsw_sp_counter_sub_pools_prepare(mlxsw_sp); if (err) - return err; - - pool = kzalloc(sizeof(*pool), GFP_KERNEL); - if (!pool) - return -ENOMEM; - spin_lock_init(&pool->counter_pool_lock); + goto err_sub_pools_prepare; pool->pool_size = MLXSW_CORE_RES_GET(mlxsw_sp->core, COUNTER_POOL_SIZE); map_size = BITS_TO_LONGS(pool->pool_size) * sizeof(unsigned long); @@ -104,12 +113,11 @@ int mlxsw_sp_counter_pool_init(struct mlxsw_sp *mlxsw_sp) goto err_usage_alloc; } - pool->sub_pools = mlxsw_sp_counter_sub_pools; /* Allocation is based on bank count which should be * specified for each sub pool statically. */ base_index = 0; - for (i = 0; i < ARRAY_SIZE(mlxsw_sp_counter_sub_pools); i++) { + for (i = 0; i < pool->sub_pools_count; i++) { sub_pool = &pool->sub_pools[i]; sub_pool->size = sub_pool->bank_count * bank_size; sub_pool->base_index = base_index; @@ -119,10 +127,11 @@ int mlxsw_sp_counter_pool_init(struct mlxsw_sp *mlxsw_sp) sub_pool->size = pool->pool_size - sub_pool->base_index; } - mlxsw_sp->counter_pool = pool; return 0; err_usage_alloc: +err_sub_pools_prepare: +err_pool_validate: kfree(pool); return err; } @@ -147,7 +156,7 @@ int mlxsw_sp_counter_alloc(struct mlxsw_sp *mlxsw_sp, unsigned int stop_index; int i, err; - sub_pool = &mlxsw_sp_counter_sub_pools[sub_pool_id]; + sub_pool = &pool->sub_pools[sub_pool_id]; stop_index = sub_pool->base_index + sub_pool->size; entry_index = sub_pool->base_index; @@ -186,7 +195,7 @@ void mlxsw_sp_counter_free(struct mlxsw_sp *mlxsw_sp, if (WARN_ON(counter_index >= pool->pool_size)) return; - sub_pool = &mlxsw_sp_counter_sub_pools[sub_pool_id]; + sub_pool = &pool->sub_pools[sub_pool_id]; spin_lock(&pool->counter_pool_lock); for (i = 0; i < sub_pool->entry_size; i++) __clear_bit(counter_index + i, pool->usage); -- 2.30.2