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 7EF48A04F9; Fri, 10 Jan 2020 11:07:50 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id BE8AB1E9B4; Fri, 10 Jan 2020 11:07:32 +0100 (CET) Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by dpdk.org (Postfix) with ESMTP id 244091E9A1 for ; Fri, 10 Jan 2020 11:07:27 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 10 Jan 2020 02:07:27 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,415,1571727600"; d="scan'208";a="230293204" Received: from intel.sh.intel.com ([10.239.255.149]) by fmsmga001.fm.intel.com with ESMTP; 10 Jan 2020 02:07:26 -0800 From: Chenxu Di To: dev@dpdk.org Cc: Yang Qiming , Chenxu Di Date: Fri, 10 Jan 2020 09:58:59 +0000 Message-Id: <20200110095900.36148-4-chenxux.di@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200110095900.36148-1-chenxux.di@intel.com> References: <20191203055134.72874-1-chenxux.di@intel.com> <20200110095900.36148-1-chenxux.di@intel.com> Subject: [dpdk-dev] [PATCH v8 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 | 2 + drivers/net/ixgbe/ixgbe_rxtx.c | 109 ++++++++++++++++++++++++ drivers/net/ixgbe/ixgbe_rxtx.h | 8 +- drivers/net/ixgbe/ixgbe_rxtx_vec_neon.c | 1 + drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c | 1 + 5 files changed, 120 insertions(+), 1 deletion(-) diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c index 2c6fd0f13..75bdd391a 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_dev_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_dev_tx_done_cleanup, }; /* store statistics names and its offset in stats structure */ diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c index fa572d184..23c897d3a 100644 --- a/drivers/net/ixgbe/ixgbe_rxtx.c +++ b/drivers/net/ixgbe/ixgbe_rxtx.c @@ -2306,6 +2306,114 @@ ixgbe_tx_queue_release_mbufs(struct ixgbe_tx_queue *txq) } } +int +ixgbe_tx_done_cleanup_full(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 && 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 (txq->tx_rs_thresh > txq->nb_tx_desc - + txq->nb_tx_free || tx_id == tx_last) + 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; + } + } + + 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) +{ + int i, n, cnt; + + if (free_cnt == 0 || free_cnt > txq->nb_tx_desc) + free_cnt = txq->nb_tx_desc; + + cnt = free_cnt - free_cnt % txq->tx_rs_thresh; + + for (i = 0; i < cnt; i += n) { + if (txq->nb_tx_desc - txq->nb_tx_free < txq->tx_rs_thresh) + break; + + n = ixgbe_tx_free_bufs(txq); + + if (n == 0) + break; + } + + return i; +} + +int +ixgbe_dev_tx_done_cleanup(void *tx_queue, uint32_t free_cnt) +{ + struct ixgbe_tx_queue *txq = (struct ixgbe_tx_queue *)tx_queue; + return txq->ops->txq_done_cleanup(txq, free_cnt); +} + +int +ixgbe_tx_done_cleanup(struct ixgbe_tx_queue *txq, uint32_t free_cnt) +{ + /* Use a simple Tx queue (no offloads, no multi segs) if possible */ + if (txq->offloads == 0) + return ixgbe_tx_done_cleanup_simple(txq, free_cnt); + else + return ixgbe_tx_done_cleanup_full(txq, free_cnt); +} + static void __attribute__((cold)) ixgbe_tx_free_swring(struct ixgbe_tx_queue *txq) { @@ -2375,6 +2483,7 @@ static const struct ixgbe_txq_ops def_txq_ops = { .release_mbufs = ixgbe_tx_queue_release_mbufs, .free_swring = ixgbe_tx_free_swring, .reset = ixgbe_reset_tx_queue, + .txq_done_cleanup = ixgbe_tx_done_cleanup, }; /* Takes an ethdev and a queue and sets up the tx function to be used based on diff --git a/drivers/net/ixgbe/ixgbe_rxtx.h b/drivers/net/ixgbe/ixgbe_rxtx.h index 505d344b9..41a3738ce 100644 --- a/drivers/net/ixgbe/ixgbe_rxtx.h +++ b/drivers/net/ixgbe/ixgbe_rxtx.h @@ -238,6 +238,7 @@ struct ixgbe_txq_ops { void (*release_mbufs)(struct ixgbe_tx_queue *txq); void (*free_swring)(struct ixgbe_tx_queue *txq); void (*reset)(struct ixgbe_tx_queue *txq); + int (*txq_done_cleanup)(struct ixgbe_tx_queue *txq, uint32_t free_cnt); }; /* @@ -253,7 +254,6 @@ struct ixgbe_txq_ops { IXGBE_ADVTXD_DCMD_DEXT |\ IXGBE_ADVTXD_DCMD_EOP) - /* 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 * in dev_init by secondary process when attaching to an existing ethdev. @@ -285,6 +285,12 @@ 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); +int ixgbe_dev_tx_done_cleanup(void *tx_queue, uint32_t free_cnt); +int ixgbe_tx_done_cleanup(struct ixgbe_tx_queue *txq, uint32_t free_cnt); +int ixgbe_tx_done_cleanup_full(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]; diff --git a/drivers/net/ixgbe/ixgbe_rxtx_vec_neon.c b/drivers/net/ixgbe/ixgbe_rxtx_vec_neon.c index feb86c61e..cd9b7dc01 100644 --- a/drivers/net/ixgbe/ixgbe_rxtx_vec_neon.c +++ b/drivers/net/ixgbe/ixgbe_rxtx_vec_neon.c @@ -559,6 +559,7 @@ static const struct ixgbe_txq_ops vec_txq_ops = { .release_mbufs = ixgbe_tx_queue_release_mbufs_vec, .free_swring = ixgbe_tx_free_swring, .reset = ixgbe_reset_tx_queue, + .txq_done_cleanup = ixgbe_tx_done_cleanup_vec, }; int __attribute__((cold)) diff --git a/drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c b/drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c index 599ba30e5..63bfac9fa 100644 --- a/drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c +++ b/drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c @@ -730,6 +730,7 @@ static const struct ixgbe_txq_ops vec_txq_ops = { .release_mbufs = ixgbe_tx_queue_release_mbufs_vec, .free_swring = ixgbe_tx_free_swring, .reset = ixgbe_reset_tx_queue, + .txq_done_cleanup = ixgbe_tx_done_cleanup_vec, }; int __attribute__((cold)) -- 2.17.1