From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp-outbound-2.vmware.com (smtp-outbound-2.vmware.com [208.91.2.13]) by dpdk.org (Postfix) with ESMTP id B358C93FA for ; Wed, 6 Jan 2016 01:22:39 +0100 (CET) Received: from sc9-mailhost2.vmware.com (sc9-mailhost2.vmware.com [10.113.161.72]) by smtp-outbound-2.vmware.com (Postfix) with ESMTP id AC26D28372; Tue, 5 Jan 2016 16:22:36 -0800 (PST) Received: from prmh-edge-ivybridge-01.eng.vmware.com (unknown [10.24.235.72]) by sc9-mailhost2.vmware.com (Postfix) with ESMTP id B7582B05AF; Tue, 5 Jan 2016 16:22:37 -0800 (PST) From: Yong Wang To: dev@dpdk.org Date: Tue, 5 Jan 2016 16:12:56 -0800 Message-Id: <1452039178-15635-3-git-send-email-yongwang@vmware.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1452039178-15635-1-git-send-email-yongwang@vmware.com> References: <1452039178-15635-1-git-send-email-yongwang@vmware.com> Subject: [dpdk-dev] [PATCH v3 2/4] vmxnet3: add tx l4 cksum offload X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Jan 2016 00:22:40 -0000 Support TCP/UDP checksum offload. Signed-off-by: Yong Wang --- doc/guides/rel_notes/release_2_3.rst | 3 +++ drivers/net/vmxnet3/vmxnet3_rxtx.c | 39 +++++++++++++++++++++++++++--------- 2 files changed, 33 insertions(+), 9 deletions(-) diff --git a/doc/guides/rel_notes/release_2_3.rst b/doc/guides/rel_notes/release_2_3.rst index a23c8ac..58205fe 100644 --- a/doc/guides/rel_notes/release_2_3.rst +++ b/doc/guides/rel_notes/release_2_3.rst @@ -20,6 +20,9 @@ Drivers Tx data ring has been shown to improve small pkt forwarding performance on vSphere environment. +* **vmxnet3: add tx l4 cksum offload.** + + Support TCP/UDP checksum offload. Libraries ~~~~~~~~~ diff --git a/drivers/net/vmxnet3/vmxnet3_rxtx.c b/drivers/net/vmxnet3/vmxnet3_rxtx.c index 2202d31..08e6115 100644 --- a/drivers/net/vmxnet3/vmxnet3_rxtx.c +++ b/drivers/net/vmxnet3/vmxnet3_rxtx.c @@ -332,6 +332,8 @@ vmxnet3_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_tx; vmxnet3_tx_queue_t *txq = tx_queue; struct vmxnet3_hw *hw = txq->hw; + Vmxnet3_TxQueueCtrl *txq_ctrl = &txq->shared->ctrl; + uint32_t deferred = rte_le_to_cpu_32(txq_ctrl->txNumDeferred); if (unlikely(txq->stopped)) { PMD_TX_LOG(DEBUG, "Tx queue is stopped."); @@ -413,21 +415,40 @@ vmxnet3_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, gdesc->txd.tci = txm->vlan_tci; } - /* TODO: Add transmit checksum offload here */ + if (txm->ol_flags & PKT_TX_L4_MASK) { + gdesc->txd.om = VMXNET3_OM_CSUM; + gdesc->txd.hlen = txm->l2_len + txm->l3_len; + + switch (txm->ol_flags & PKT_TX_L4_MASK) { + case PKT_TX_TCP_CKSUM: + gdesc->txd.msscof = gdesc->txd.hlen + offsetof(struct tcp_hdr, cksum); + break; + case PKT_TX_UDP_CKSUM: + gdesc->txd.msscof = gdesc->txd.hlen + offsetof(struct udp_hdr, dgram_cksum); + break; + default: + PMD_TX_LOG(WARNING, "requested cksum offload not supported %#llx", + txm->ol_flags & PKT_TX_L4_MASK); + abort(); + } + } else { + gdesc->txd.hlen = 0; + gdesc->txd.om = VMXNET3_OM_NONE; + gdesc->txd.msscof = 0; + } + + txq_ctrl->txNumDeferred = rte_cpu_to_le_32(++deferred); /* flip the GEN bit on the SOP */ rte_compiler_barrier(); gdesc->dword[2] ^= VMXNET3_TXD_GEN; - - txq->shared->ctrl.txNumDeferred++; nb_tx++; } - PMD_TX_LOG(DEBUG, "vmxnet3 txThreshold: %u", txq->shared->ctrl.txThreshold); - - if (txq->shared->ctrl.txNumDeferred >= txq->shared->ctrl.txThreshold) { + PMD_TX_LOG(DEBUG, "vmxnet3 txThreshold: %u", rte_le_to_cpu_32(txq_ctrl->txThreshold)); - txq->shared->ctrl.txNumDeferred = 0; + if (deferred >= rte_le_to_cpu_32(txq_ctrl->txThreshold)) { + txq_ctrl->txNumDeferred = 0; /* Notify vSwitch that packets are available. */ VMXNET3_WRITE_BAR0_REG(hw, (VMXNET3_REG_TXPROD + txq->queue_id * VMXNET3_REG_ALIGN), txq->cmd_ring.next2fill); @@ -728,8 +749,8 @@ vmxnet3_dev_tx_queue_setup(struct rte_eth_dev *dev, PMD_INIT_FUNC_TRACE(); if ((tx_conf->txq_flags & ETH_TXQ_FLAGS_NOXSUMS) != - ETH_TXQ_FLAGS_NOXSUMS) { - PMD_INIT_LOG(ERR, "TX no support for checksum offload yet"); + ETH_TXQ_FLAGS_NOXSUMSCTP) { + PMD_INIT_LOG(ERR, "SCTP checksum offload not supported"); return -EINVAL; } -- 1.9.1