From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pl1-f196.google.com (mail-pl1-f196.google.com [209.85.214.196]) by dpdk.org (Postfix) with ESMTP id ED92B58FA for ; Tue, 4 Sep 2018 09:10:50 +0200 (CEST) Received: by mail-pl1-f196.google.com with SMTP id t19-v6so1173185ply.13 for ; Tue, 04 Sep 2018 00:10:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=semihalf-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=mCc0MspjeAoopubxZmXTX5O+cBaEOu3Z86WGw9tSwsU=; b=skrCw6LmG8LQPwxDUMmnzfL3lspY/AVRDEX+fLqH7f+2XvqzUfVAjBNLnbqs8d1Wjl /P06x4gSgOvyP7h48jwT11nq1vcjBTzF+fe7T6gFj5yEZZwgaDEHmwlmH4yJJ8PkRm3d L9Wn86CiJLMeQsSi4qvta7bJTjzQb3ygWXOY6XP74UWXFqewXgf2m0K9w4p4/fuLRrTt 7wCRxtJYTUgWJ7D7Yn3jPxGFx6ZdD6Ib+tJ0dw5DWYvCHNATJWbopW6SumOGf0zYeubZ MgasPXI8cPDb6QohBTN/017sLknpFRGdFo68TtbvZN9Zn+1d5r5c+YW3I8sWILLfV+uZ 6+qw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=mCc0MspjeAoopubxZmXTX5O+cBaEOu3Z86WGw9tSwsU=; b=Dy7ZsXQDI5vtlc+HV4GJzKaEcMPSBkj2vghBbwNe7asxu5KUI7NQdYjjDQuqOwRrWE hoGRDAQNsMALE/xz2Q555mKtK0rh4yWQ65lxHp8LzR16nNahcVdndFM+Ctq89wmAcYIa UMZafeZnHPn+QezCpCsdJzH2y4TOJuxHJQKaj+LnO8BncRuX/t3uX0MxZ33jv2zZgva8 qfsIqSOlh+BRBAVit2i/Lx+tsD7uVJJA5VXmyMQ2ECJEHg+Nl8+6AVZS3pk5TTOfP5uX t3AZClcjmNFriPvi378gbj5vA6h1AUOXaapeM8zzwbISSoxDTMFQB9zMNSlM2t4K+zc/ hj9g== X-Gm-Message-State: APzg51DESPf6hNJqyZjanoMCqL4ev+xmV4P8pREaa+0eryNAcFhrFD7E o7aj0reH68ZSbbRAtn7axmIrN/bsF204gA== X-Google-Smtp-Source: ANB0VdbE42Tmj8lRF68bbnrvvtd1I+0NBoG3IJMYjIgJY0tI0mHe3hcyfIQK5JCg4IiibgMISN0DiQ== X-Received: by 2002:a17:902:5a3:: with SMTP id f32-v6mr32651638plf.286.1536045049930; Tue, 04 Sep 2018 00:10:49 -0700 (PDT) Received: from sh.semihalf.local (31-172-191-173.noc.fibertech.net.pl. [31.172.191.173]) by smtp.gmail.com with ESMTPSA id l79-v6sm31229451pfb.111.2018.09.04.00.10.47 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 04 Sep 2018 00:10:49 -0700 (PDT) From: Tomasz Duszynski To: dev@dpdk.org Cc: nsamsono@marvell.com, mw@semihalf.com Date: Tue, 4 Sep 2018 09:10:16 +0200 Message-Id: <1536045016-32008-9-git-send-email-tdu@semihalf.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1536045016-32008-1-git-send-email-tdu@semihalf.com> References: <1536045016-32008-1-git-send-email-tdu@semihalf.com> Subject: [dpdk-dev] [PATCH 8/8] net/mvpp2: update MTU and MRU related calculations 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: , X-List-Received-Date: Tue, 04 Sep 2018 07:10:51 -0000 From: Natalie Samsonov This commit updates MTU and MRU related calculations. Signed-off-by: Natalie Samsonov Reviewed-by: Yelena Krivosheev Reviewed-by: Dmitri Epshtein --- drivers/net/mvpp2/mrvl_ethdev.c | 70 +++++++++++++++++++++++++++++++---------- drivers/net/mvpp2/mrvl_ethdev.h | 7 +++++ 2 files changed, 61 insertions(+), 16 deletions(-) diff --git a/drivers/net/mvpp2/mrvl_ethdev.c b/drivers/net/mvpp2/mrvl_ethdev.c index 5643e7d..035ee81 100644 --- a/drivers/net/mvpp2/mrvl_ethdev.c +++ b/drivers/net/mvpp2/mrvl_ethdev.c @@ -325,7 +325,7 @@ mrvl_dev_configure(struct rte_eth_dev *dev) if (dev->data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) dev->data->mtu = dev->data->dev_conf.rxmode.max_rx_pkt_len - - ETHER_HDR_LEN - ETHER_CRC_LEN; + MRVL_PP2_ETH_HDRS_LEN; ret = mrvl_configure_rxqs(priv, dev->data->port_id, dev->data->nb_rx_queues); @@ -375,21 +375,55 @@ static int mrvl_mtu_set(struct rte_eth_dev *dev, uint16_t mtu) { struct mrvl_priv *priv = dev->data->dev_private; - /* extra MV_MH_SIZE bytes are required for Marvell tag */ - uint16_t mru = mtu + MV_MH_SIZE + ETHER_HDR_LEN + ETHER_CRC_LEN; + uint16_t mru; + uint16_t mbuf_data_size = 0; /* SW buffer size */ int ret; - if (mtu < ETHER_MIN_MTU || mru > MRVL_PKT_SIZE_MAX) + mru = MRVL_PP2_MTU_TO_MRU(mtu); + /* + * min_rx_buf_size is equal to mbuf data size + * if pmd didn't set it differently + */ + mbuf_data_size = dev->data->min_rx_buf_size - RTE_PKTMBUF_HEADROOM; + /* Prevent PMD from: + * - setting mru greater than the mbuf size resulting in + * hw and sw buffer size mismatch + * - setting mtu that requires the support of scattered packets + * when this feature has not been enabled/supported so far + * (TODO check scattered_rx flag here once scattered RX is supported). + */ + if (mru + MRVL_PKT_OFFS > mbuf_data_size) { + mru = mbuf_data_size - MRVL_PKT_OFFS; + mtu = MRVL_PP2_MRU_TO_MTU(mru); + MRVL_LOG(WARNING, "MTU too big, max MTU possible limitted " + "by current mbuf size: %u. Set MTU to %u, MRU to %u", + mbuf_data_size, mtu, mru); + } + + if (mtu < ETHER_MIN_MTU || mru > MRVL_PKT_SIZE_MAX) { + MRVL_LOG(ERR, "Invalid MTU [%u] or MRU [%u]", mtu, mru); return -EINVAL; + } + + dev->data->mtu = mtu; + dev->data->dev_conf.rxmode.max_rx_pkt_len = mru - MV_MH_SIZE; if (!priv->ppio) return 0; ret = pp2_ppio_set_mru(priv->ppio, mru); - if (ret) + if (ret) { + MRVL_LOG(ERR, "Failed to change MRU"); return ret; + } + + ret = pp2_ppio_set_mtu(priv->ppio, mtu); + if (ret) { + MRVL_LOG(ERR, "Failed to change MTU"); + return ret; + } - return pp2_ppio_set_mtu(priv->ppio, mtu); + return 0; } /** @@ -600,6 +634,9 @@ mrvl_dev_start(struct rte_eth_dev *dev) } priv->vlan_flushed = 1; } + ret = mrvl_mtu_set(dev, dev->data->mtu); + if (ret) + MRVL_LOG(ERR, "Failed to set MTU to %d", dev->data->mtu); /* For default QoS config, don't start classifier. */ if (mrvl_qos_cfg && @@ -1552,8 +1589,8 @@ mrvl_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc, { struct mrvl_priv *priv = dev->data->dev_private; struct mrvl_rxq *rxq; - uint32_t min_size, - max_rx_pkt_len = dev->data->dev_conf.rxmode.max_rx_pkt_len; + uint32_t frame_size, buf_size = rte_pktmbuf_data_room_size(mp); + uint32_t max_rx_pkt_len = dev->data->dev_conf.rxmode.max_rx_pkt_len; int ret, tc, inq; uint64_t offloads; @@ -1568,15 +1605,16 @@ mrvl_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc, return -EFAULT; } - min_size = rte_pktmbuf_data_room_size(mp) - RTE_PKTMBUF_HEADROOM - - MRVL_PKT_EFFEC_OFFS; - if (min_size < max_rx_pkt_len) { - MRVL_LOG(ERR, - "Mbuf size must be increased to %u bytes to hold up to %u bytes of data.", - max_rx_pkt_len + RTE_PKTMBUF_HEADROOM + - MRVL_PKT_EFFEC_OFFS, + frame_size = buf_size - RTE_PKTMBUF_HEADROOM - MRVL_PKT_EFFEC_OFFS; + if (frame_size < max_rx_pkt_len) { + MRVL_LOG(WARNING, + "Mbuf size must be increased to %u bytes to hold up " + "to %u bytes of data.", + buf_size + max_rx_pkt_len - frame_size, max_rx_pkt_len); - return -EINVAL; + dev->data->dev_conf.rxmode.max_rx_pkt_len = frame_size; + MRVL_LOG(INFO, "Setting max rx pkt len to %u", + dev->data->dev_conf.rxmode.max_rx_pkt_len); } if (dev->data->rx_queues[idx]) { diff --git a/drivers/net/mvpp2/mrvl_ethdev.h b/drivers/net/mvpp2/mrvl_ethdev.h index 984f31e..f0ae983 100644 --- a/drivers/net/mvpp2/mrvl_ethdev.h +++ b/drivers/net/mvpp2/mrvl_ethdev.h @@ -72,6 +72,13 @@ /** Minimum number of sent buffers to release from shadow queue to BM */ #define MRVL_PP2_BUF_RELEASE_BURST_SIZE 64 +#define MRVL_PP2_VLAN_TAG_LEN 4 +#define MRVL_PP2_ETH_HDRS_LEN (ETHER_HDR_LEN + ETHER_CRC_LEN + \ + (2 * MRVL_PP2_VLAN_TAG_LEN)) +#define MRVL_PP2_HDRS_LEN (MV_MH_SIZE + MRVL_PP2_ETH_HDRS_LEN) +#define MRVL_PP2_MTU_TO_MRU(mtu) ((mtu) + MRVL_PP2_HDRS_LEN) +#define MRVL_PP2_MRU_TO_MTU(mru) ((mru) - MRVL_PP2_HDRS_LEN) + /** Maximum length of a match string */ #define MRVL_MATCH_LEN 16 -- 2.7.4