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[ { "id": 116498, "web_url": "https://patches.dpdk.org/comment/116498/", "msgid": "<AM0PR05MB6707B2B0382A66ACB4145293C2790@AM0PR05MB6707.eurprd05.prod.outlook.com>", "list_archive_url": "https://inbox.dpdk.org/dev/AM0PR05MB6707B2B0382A66ACB4145293C2790@AM0PR05MB6707.eurprd05.prod.outlook.com", "date": "2020-07-22T11:35:38", "subject": "Re: [dpdk-dev] [PATCH v2 1/3] net/mlx5: separate aging counter pool\n\trange", "submitter": { "id": 513, "url": "https://patches.dpdk.org/api/people/513/?format=api", "name": "Raslan Darawsheh", "email": "rasland@mellanox.com" }, "content": "Hi,\n\n> -----Original Message-----\n> From: Suanming Mou <suanmingm@mellanox.com>\n> Sent: Wednesday, July 22, 2020 10:59 AM\n> To: Slava Ovsiienko <viacheslavo@mellanox.com>; Matan Azrad\n> <matan@mellanox.com>\n> Cc: Raslan Darawsheh <rasland@mellanox.com>; dev@dpdk.org\n> Subject: [PATCH v2 1/3] net/mlx5: separate aging counter pool range\n> \n> Currently, when allocate the counter or counter based age from group 0,\n> counter and age may share the same counter dcs ID range. Both age and\n> pure counter need to sync up with each other's container to check if\n> the ID range exists and update the min_dcs.\n> \n> It comes two disadvantages:\n> 1. If the ID range is shared, this counter range will be queried twice\n> both from age and pure counter container in 1s.\n> 2. The same range counter check between the two container makes the\n> counter allocate sync min_dcs time to time with extra min_dcs updating.\n> \n> This patch avoid the same ID range to be shared when allocate the new\n> pool. If the same ID range exists in other container, just add the\n> counter to the other container until get new range which saves the\n> min_dcs sync up time to time.\n> \n> Signed-off-by: Suanming Mou <suanmingm@mellanox.com>\n> Acked-by: Matan Azrad <matan@mellanox.com>\n> ---\n> drivers/net/mlx5/mlx5_flow_dv.c | 69 +++++++++++++++++------------------\n> ------\n> 1 file changed, 28 insertions(+), 41 deletions(-)\n> \n> diff --git a/drivers/net/mlx5/mlx5_flow_dv.c\n> b/drivers/net/mlx5/mlx5_flow_dv.c\n> index f0cc7ad..2fc4457 100644\n> --- a/drivers/net/mlx5/mlx5_flow_dv.c\n> +++ b/drivers/net/mlx5/mlx5_flow_dv.c\n> @@ -4408,39 +4408,6 @@ struct field_modify_info modify_tcp[] = {\n> }\n> \n> /**\n> - * Update the minimum dcs-id for aged or no-aged counter pool.\n> - *\n> - * @param[in] dev\n> - * Pointer to the Ethernet device structure.\n> - * @param[in] pool\n> - * Current counter pool.\n> - * @param[in] batch\n> - * Whether the pool is for counter that was allocated by batch command.\n> - * @param[in] age\n> - * Whether the counter is for aging.\n> - */\n> -static void\n> -flow_dv_counter_update_min_dcs(struct rte_eth_dev *dev,\n> -\t\t\tstruct mlx5_flow_counter_pool *pool,\n> -\t\t\tuint32_t batch, uint32_t age)\n> -{\n> -\tstruct mlx5_priv *priv = dev->data->dev_private;\n> -\tstruct mlx5_flow_counter_pool *other;\n> -\tstruct mlx5_pools_container *cont;\n> -\n> -\tcont = MLX5_CNT_CONTAINER(priv->sh, batch, (age ^ 0x1));\n> -\tother = flow_dv_find_pool_by_id(cont, pool->min_dcs->id);\n> -\tif (!other)\n> -\t\treturn;\n> -\tif (pool->min_dcs->id < other->min_dcs->id) {\n> -\t\trte_atomic64_set(&other->a64_dcs,\n> -\t\t\trte_atomic64_read(&pool->a64_dcs));\n> -\t} else {\n> -\t\trte_atomic64_set(&pool->a64_dcs,\n> -\t\t\trte_atomic64_read(&other->a64_dcs));\n> -\t}\n> -}\n> -/**\n> * Prepare a new counter and/or a new counter pool.\n> *\n> * @param[in] dev\n> @@ -4467,31 +4434,50 @@ struct field_modify_info modify_tcp[] = {\n> \tstruct mlx5_counters tmp_tq;\n> \tstruct mlx5_devx_obj *dcs = NULL;\n> \tstruct mlx5_flow_counter *cnt;\n> +\tuint32_t add2other;\n> \tuint32_t i;\n> \n> \tcont = MLX5_CNT_CONTAINER(priv->sh, batch, age);\n> \tif (!batch) {\n> +retry:\n> +\t\tadd2other = 0;\n> \t\t/* bulk_bitmap must be 0 for single counter allocation. */\n> \t\tdcs = mlx5_devx_cmd_flow_counter_alloc(priv->sh->ctx, 0);\n> \t\tif (!dcs)\n> \t\t\treturn NULL;\n> \t\tpool = flow_dv_find_pool_by_id(cont, dcs->id);\n> +\t\t/* Check if counter belongs to exist pool ID range. */\n> \t\tif (!pool) {\n> -\t\t\tpool = flow_dv_pool_create(dev, dcs, batch, age);\n> -\t\t\tif (!pool) {\n> -\t\t\t\tmlx5_devx_cmd_destroy(dcs);\n> -\t\t\t\treturn NULL;\n> +\t\t\tpool = flow_dv_find_pool_by_id\n> +\t\t\t (MLX5_CNT_CONTAINER\n> +\t\t\t (priv->sh, batch, (age ^ 0x1)), dcs->id);\n> +\t\t\t/*\n> +\t\t\t * Pool eixsts, counter will be added to the other\n> +\t\t\t * container, need to reallocate it later.\n> +\t\t\t */\n> +\t\t\tif (pool) {\n> +\t\t\t\tadd2other = 1;\n> +\t\t\t} else {\n> +\t\t\t\tpool = flow_dv_pool_create(dev, dcs, batch,\n> +\t\t\t\t\t\t\t age);\n> +\t\t\t\tif (!pool) {\n> +\t\t\t\t\tmlx5_devx_cmd_destroy(dcs);\n> +\t\t\t\t\treturn NULL;\n> +\t\t\t\t}\n> \t\t\t}\n> -\t\t} else if (dcs->id < pool->min_dcs->id) {\n> +\t\t}\n> +\t\tif (dcs->id < pool->min_dcs->id)\n> \t\t\trte_atomic64_set(&pool->a64_dcs,\n> \t\t\t\t\t (int64_t)(uintptr_t)dcs);\n> -\t\t}\n> -\t\tflow_dv_counter_update_min_dcs(dev,\n> -\t\t\t\t\t\tpool, batch, age);\n> \t\ti = dcs->id % MLX5_COUNTERS_PER_POOL;\n> \t\tcnt = MLX5_POOL_GET_CNT(pool, i);\n> \t\tcnt->pool = pool;\n> \t\tMLX5_GET_POOL_CNT_EXT(pool, i)->dcs = dcs;\n> +\t\tif (add2other) {\n> +\t\t\tTAILQ_INSERT_TAIL(&pool->counters[pool-\n> >query_gen],\n> +\t\t\t\t\t cnt, next);\n> +\t\t\tgoto retry;\n> +\t\t}\n> \t\t*cnt_free = cnt;\n> \t\treturn pool;\n> \t}\n> @@ -9985,3 +9971,4 @@ struct field_modify_info modify_tcp[] = {\n> };\n> \n> #endif /* HAVE_IBV_FLOW_DV_SUPPORT */\n> +\n> --\n> 1.8.3.1\n\n\nSeries applied to next-net-mlx,\n\nKindest regards,\nRaslan Darawsheh", "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@inbox.dpdk.org", "Delivered-To": "patchwork@inbox.dpdk.org", "Received": [ "from dpdk.org (dpdk.org [92.243.14.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id AD24FA0526;\n\tWed, 22 Jul 2020 13:35:40 +0200 (CEST)", "from [92.243.14.124] (localhost [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id 46C4C1C02C;\n\tWed, 22 Jul 2020 13:35:40 +0200 (CEST)", "from EUR05-VI1-obe.outbound.protection.outlook.com\n (mail-vi1eur05on2048.outbound.protection.outlook.com [40.107.21.48])\n by dpdk.org (Postfix) with ESMTP id 9420D1C012\n for <dev@dpdk.org>; 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