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 93F23A046B; Thu, 9 Jan 2020 11:39:14 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 78F1D1DC22; Thu, 9 Jan 2020 11:38:56 +0100 (CET) Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by dpdk.org (Postfix) with ESMTP id 78E061DC04 for ; Thu, 9 Jan 2020 11:38:51 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 09 Jan 2020 02:38:50 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,413,1571727600"; d="scan'208";a="254553017" Received: from intel.sh.intel.com ([10.239.255.149]) by fmsmga002.fm.intel.com with ESMTP; 09 Jan 2020 02:38:49 -0800 From: Chenxu Di To: dev@dpdk.org Cc: Yang Qiming , Chenxu Di Date: Thu, 9 Jan 2020 10:38:21 +0000 Message-Id: <20200109103822.89011-4-chenxux.di@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200109103822.89011-1-chenxux.di@intel.com> References: <20191203055134.72874-1-chenxux.di@intel.com> <20200109103822.89011-1-chenxux.di@intel.com> Subject: [dpdk-dev] [PATCH v7 3/4] net/ixgbe: 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 ixgbe driver for the API rte_eth_tx_done_cleanup to force free consumed buffers on Tx ring. Signed-off-by: Chenxu Di --- drivers/net/ixgbe/ixgbe_ethdev.c | 4 + drivers/net/ixgbe/ixgbe_rxtx.c | 156 ++++++++++++++++++++++++++++++- drivers/net/ixgbe/ixgbe_rxtx.h | 10 ++ 3 files changed, 169 insertions(+), 1 deletion(-) diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c index 2c6fd0f13..668c36188 100644 --- a/drivers/net/ixgbe/ixgbe_ethdev.c +++ b/drivers/net/ixgbe/ixgbe_ethdev.c @@ -601,6 +601,7 @@ static const struct eth_dev_ops ixgbe_eth_dev_ops = { .udp_tunnel_port_add = ixgbe_dev_udp_tunnel_port_add, .udp_tunnel_port_del = ixgbe_dev_udp_tunnel_port_del, .tm_ops_get = ixgbe_tm_ops_get, + .tx_done_cleanup = ixgbe_tx_done_cleanup, }; /* @@ -649,6 +650,7 @@ static const struct eth_dev_ops ixgbevf_eth_dev_ops = { .reta_query = ixgbe_dev_rss_reta_query, .rss_hash_update = ixgbe_dev_rss_hash_update, .rss_hash_conf_get = ixgbe_dev_rss_hash_conf_get, + .tx_done_cleanup = ixgbe_tx_done_cleanup, }; /* store statistics names and its offset in stats structure */ @@ -1101,6 +1103,7 @@ eth_ixgbe_dev_init(struct rte_eth_dev *eth_dev, void *init_params __rte_unused) eth_dev->rx_pkt_burst = &ixgbe_recv_pkts; eth_dev->tx_pkt_burst = &ixgbe_xmit_pkts; eth_dev->tx_pkt_prepare = &ixgbe_prep_pkts; + ixgbe_set_tx_done_cleanup_func(ixgbe_tx_done_cleanup_scalar); /* * For secondary processes, we don't initialise any further as primary @@ -1580,6 +1583,7 @@ eth_ixgbevf_dev_init(struct rte_eth_dev *eth_dev) eth_dev->dev_ops = &ixgbevf_eth_dev_ops; eth_dev->rx_pkt_burst = &ixgbe_recv_pkts; eth_dev->tx_pkt_burst = &ixgbe_xmit_pkts; + ixgbe_set_tx_done_cleanup_func(ixgbe_tx_done_cleanup_scalar); /* for secondary processes, we don't initialise any further as primary * has already done this work. Only check we don't need a different diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c index fa572d184..122dae425 100644 --- a/drivers/net/ixgbe/ixgbe_rxtx.c +++ b/drivers/net/ixgbe/ixgbe_rxtx.c @@ -92,6 +92,8 @@ uint16_t ixgbe_xmit_fixed_burst_vec(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts); #endif +static ixgbe_tx_done_cleanup_t ixgbe_tx_done_cleanup_op; + /********************************************************************* * * TX functions @@ -2306,6 +2308,152 @@ ixgbe_tx_queue_release_mbufs(struct ixgbe_tx_queue *txq) } } +int +ixgbe_tx_done_cleanup_scalar(struct ixgbe_tx_queue *txq, uint32_t free_cnt) +{ + uint32_t pkt_cnt; + uint16_t i; + uint16_t tx_last; + uint16_t tx_id; + uint16_t nb_tx_to_clean; + uint16_t nb_tx_free_last; + struct ixgbe_tx_entry *swr_ring = txq->sw_ring; + + /* Start free mbuf from the next of tx_tail */ + tx_last = txq->tx_tail; + tx_id = swr_ring[tx_last].next_id; + + if (txq->nb_tx_free == 0) + if (ixgbe_xmit_cleanup(txq)) + return 0; + + nb_tx_to_clean = txq->nb_tx_free; + nb_tx_free_last = txq->nb_tx_free; + if (!free_cnt) + free_cnt = txq->nb_tx_desc; + + /* Loop through swr_ring to count the amount of + * freeable mubfs and packets. + */ + for (pkt_cnt = 0; pkt_cnt < free_cnt; ) { + for (i = 0; i < nb_tx_to_clean && + pkt_cnt < free_cnt && + tx_id != tx_last; i++) { + if (swr_ring[tx_id].mbuf != NULL) { + rte_pktmbuf_free_seg(swr_ring[tx_id].mbuf); + swr_ring[tx_id].mbuf = NULL; + + /* + * last segment in the packet, + * increment packet count + */ + pkt_cnt += (swr_ring[tx_id].last_id == tx_id); + } + + tx_id = swr_ring[tx_id].next_id; + } + + if (tx_id == tx_last || txq->tx_rs_thresh + > txq->nb_tx_desc - txq->nb_tx_free) + break; + + if (pkt_cnt < free_cnt) { + if (ixgbe_xmit_cleanup(txq)) + break; + + nb_tx_to_clean = txq->nb_tx_free - nb_tx_free_last; + nb_tx_free_last = txq->nb_tx_free; + } + } + + PMD_TX_FREE_LOG(DEBUG, + "Free %u Packets successfully " + "(port=%d queue=%d)", + pkt_cnt, txq->port_id, txq->queue_id); + + return (int)pkt_cnt; +} + +int +ixgbe_tx_done_cleanup_vec(struct ixgbe_tx_queue *txq __rte_unused, + uint32_t free_cnt __rte_unused) +{ + return -ENOTSUP; +} + +int +ixgbe_tx_done_cleanup_simple(struct ixgbe_tx_queue *txq, + uint32_t free_cnt) +{ + uint16_t i; + uint16_t tx_first; + uint16_t tx_id; + uint32_t pkt_cnt; + struct ixgbe_tx_entry *swr_ring = txq->sw_ring; + + /* Start free mbuf from tx_first */ + tx_first = txq->tx_next_dd - (txq->tx_rs_thresh - 1); + tx_id = tx_first; + + /* while free_cnt is 0, + * suppose one mbuf per packet, + * try to free packets as many as possible + */ + if (free_cnt == 0) + free_cnt = txq->nb_tx_desc; + + /* Loop through swr_ring to count freeable packets */ + for (pkt_cnt = 0; pkt_cnt < free_cnt; ) { + if (txq->nb_tx_desc - txq->nb_tx_free < txq->tx_rs_thresh) + break; + + if (!ixgbe_tx_free_bufs(txq)) + break; + + for (i = 0; i != txq->tx_rs_thresh && + tx_id != tx_first; i++) { + /* last segment in the packet, + * increment packet count + */ + pkt_cnt += (tx_id == swr_ring[tx_id].last_id); + tx_id = swr_ring[tx_id].next_id; + } + + if (tx_id == tx_first) + break; + } + + PMD_TX_FREE_LOG(DEBUG, + "Free %u packets successfully " + "(port=%d queue=%d)", + pkt_cnt, txq->port_id, txq->queue_id); + + return (int)pkt_cnt; +} + +int +ixgbe_tx_done_cleanup(void *txq, uint32_t free_cnt) +{ + ixgbe_tx_done_cleanup_t func = ixgbe_get_tx_done_cleanup_func(); + + if (!func) + return -ENOTSUP; + + return func(txq, free_cnt); +} + +void +ixgbe_set_tx_done_cleanup_func(ixgbe_tx_done_cleanup_t fn) +{ + ixgbe_tx_done_cleanup_op = fn; +} + +ixgbe_tx_done_cleanup_t +ixgbe_get_tx_done_cleanup_func(void) +{ + return ixgbe_tx_done_cleanup_op; +} + static void __attribute__((cold)) ixgbe_tx_free_swring(struct ixgbe_tx_queue *txq) { @@ -2398,9 +2546,14 @@ ixgbe_set_tx_function(struct rte_eth_dev *dev, struct ixgbe_tx_queue *txq) ixgbe_txq_vec_setup(txq) == 0)) { PMD_INIT_LOG(DEBUG, "Vector tx enabled."); dev->tx_pkt_burst = ixgbe_xmit_pkts_vec; - } else + ixgbe_set_tx_done_cleanup_func(ixgbe_tx_done_cleanup_vec); + } else { #endif dev->tx_pkt_burst = ixgbe_xmit_pkts_simple; + ixgbe_set_tx_done_cleanup_func(ixgbe_tx_done_cleanup_simple); +#ifdef RTE_IXGBE_INC_VECTOR + } +#endif } else { PMD_INIT_LOG(DEBUG, "Using full-featured tx code path"); PMD_INIT_LOG(DEBUG, @@ -2412,6 +2565,7 @@ ixgbe_set_tx_function(struct rte_eth_dev *dev, struct ixgbe_tx_queue *txq) (unsigned long)RTE_PMD_IXGBE_TX_MAX_BURST); dev->tx_pkt_burst = ixgbe_xmit_pkts; dev->tx_pkt_prepare = ixgbe_prep_pkts; + ixgbe_set_tx_done_cleanup_func(ixgbe_tx_done_cleanup_scalar); } } diff --git a/drivers/net/ixgbe/ixgbe_rxtx.h b/drivers/net/ixgbe/ixgbe_rxtx.h index 505d344b9..a52597aa9 100644 --- a/drivers/net/ixgbe/ixgbe_rxtx.h +++ b/drivers/net/ixgbe/ixgbe_rxtx.h @@ -253,6 +253,8 @@ struct ixgbe_txq_ops { IXGBE_ADVTXD_DCMD_DEXT |\ IXGBE_ADVTXD_DCMD_EOP) +typedef int (*ixgbe_tx_done_cleanup_t)(struct ixgbe_tx_queue *txq, + uint32_t free_cnt); /* Takes an ethdev and a queue and sets up the tx function to be used based on * the queue parameters. Used in tx_queue_setup by primary process and then @@ -285,6 +287,14 @@ int ixgbe_rx_vec_dev_conf_condition_check(struct rte_eth_dev *dev); int ixgbe_rxq_vec_setup(struct ixgbe_rx_queue *rxq); void ixgbe_rx_queue_release_mbufs_vec(struct ixgbe_rx_queue *rxq); +void ixgbe_set_tx_done_cleanup_func(ixgbe_tx_done_cleanup_t fn); +ixgbe_tx_done_cleanup_t ixgbe_get_tx_done_cleanup_func(void); + +int ixgbe_tx_done_cleanup(void *txq, uint32_t free_cnt); +int ixgbe_tx_done_cleanup_scalar(struct ixgbe_tx_queue *txq, uint32_t free_cnt); +int ixgbe_tx_done_cleanup_vec(struct ixgbe_tx_queue *txq, uint32_t free_cnt); +int ixgbe_tx_done_cleanup_simple(struct ixgbe_tx_queue *txq, uint32_t free_cnt); + extern const uint32_t ptype_table[IXGBE_PACKET_TYPE_MAX]; extern const uint32_t ptype_table_tn[IXGBE_PACKET_TYPE_TN_MAX]; -- 2.17.1