From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id E9FD6A0613 for ; Thu, 26 Sep 2019 12:12:43 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 75A371BFCC; Thu, 26 Sep 2019 12:12:41 +0200 (CEST) Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by dpdk.org (Postfix) with ESMTP id 784AB1BF87 for ; Thu, 26 Sep 2019 12:12:39 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Sep 2019 03:12:38 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,551,1559545200"; d="scan'208";a="273283584" Received: from intel.sh.intel.com ([10.239.255.149]) by orsmga001.jf.intel.com with ESMTP; 26 Sep 2019 03:12:37 -0700 From: Di ChenxuX To: dev@dpdk.org Cc: qiming.yang@intel.com, Di ChenxuX Date: Thu, 26 Sep 2019 09:29:30 +0000 Message-Id: <20190926092933.79683-2-chenxux.di@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190926092933.79683-1-chenxux.di@intel.com> References: <20190926092933.79683-1-chenxux.di@intel.com> Subject: [dpdk-dev] [PATCH 1/4] net/fm10k: cleanup Tx buffers X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Add support to the fm10k driver for the API rte_eth_tx_done_cleanup to force free consumed buffers on Tx ring. Signed-off-by: Di ChenxuX --- drivers/net/fm10k/fm10k.h | 2 ++ drivers/net/fm10k/fm10k_ethdev.c | 1 + drivers/net/fm10k/fm10k_rxtx.c | 45 ++++++++++++++++++++++++++++++++ 3 files changed, 48 insertions(+) diff --git a/drivers/net/fm10k/fm10k.h b/drivers/net/fm10k/fm10k.h index 916b856ac..ddb1d64ec 100644 --- a/drivers/net/fm10k/fm10k.h +++ b/drivers/net/fm10k/fm10k.h @@ -342,6 +342,8 @@ uint16_t fm10k_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t fm10k_prep_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts); +int fm10k_tx_done_cleanup(void *txq, uint32_t free_cnt); + int fm10k_rxq_vec_setup(struct fm10k_rx_queue *rxq); int fm10k_rx_vec_condition_check(struct rte_eth_dev *); void fm10k_rx_queue_release_mbufs_vec(struct fm10k_rx_queue *rxq); diff --git a/drivers/net/fm10k/fm10k_ethdev.c b/drivers/net/fm10k/fm10k_ethdev.c index db4d72129..328468185 100644 --- a/drivers/net/fm10k/fm10k_ethdev.c +++ b/drivers/net/fm10k/fm10k_ethdev.c @@ -2838,6 +2838,7 @@ static const struct eth_dev_ops fm10k_eth_dev_ops = { .reta_query = fm10k_reta_query, .rss_hash_update = fm10k_rss_hash_update, .rss_hash_conf_get = fm10k_rss_hash_conf_get, + .tx_done_cleanup = fm10k_tx_done_cleanup, }; static int ftag_check_handler(__rte_unused const char *key, diff --git a/drivers/net/fm10k/fm10k_rxtx.c b/drivers/net/fm10k/fm10k_rxtx.c index 5c3112183..f67c5bf00 100644 --- a/drivers/net/fm10k/fm10k_rxtx.c +++ b/drivers/net/fm10k/fm10k_rxtx.c @@ -541,6 +541,51 @@ static inline void tx_free_bulk_mbuf(struct rte_mbuf **txep, int num) } } +int fm10k_tx_done_cleanup(void *txq, uint32_t free_cnt) +{ + struct fm10k_tx_queue *q = (struct fm10k_tx_queue *)txq; + uint16_t next_rs, count = 0; + + if (q == NULL) + return -ENODEV; + + next_rs = fifo_peek(&q->rs_tracker); + if (!(q->hw_ring[next_rs].flags & FM10K_TXD_FLAG_DONE)) + return count; + + /* the DONE flag is set on this descriptor so remove the ID + * from the RS bit tracker and free the buffers + */ + fifo_remove(&q->rs_tracker); + + /* wrap around? if so, free buffers from last_free up to but NOT + * including nb_desc + */ + if (q->last_free > next_rs) { + count = q->nb_desc - q->last_free; + tx_free_bulk_mbuf(&q->sw_ring[q->last_free], count); + q->last_free = 0; + + if (unlikely(count == (int)free_cnt)) + return count; + } + + /* adjust free descriptor count before the next loop */ + q->nb_free += count + (next_rs + 1 - q->last_free); + + /* free buffers from last_free, up to and including next_rs */ + if (q->last_free <= next_rs) { + count = next_rs - q->last_free + 1; + tx_free_bulk_mbuf(&q->sw_ring[q->last_free], count); + q->last_free += count; + } + + if (q->last_free == q->nb_desc) + q->last_free = 0; + + return count; +} + static inline void tx_free_descriptors(struct fm10k_tx_queue *q) { uint16_t next_rs, count = 0; -- 2.17.1