From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ian Stokes Subject: [RFC 5/6] net/ixgbe: set min and max MTU for ixgbe VF devices Date: Wed, 20 Feb 2019 15:57:54 +0000 Message-ID: <1550678275-4959-6-git-send-email-ian.stokes@intel.com> References: <1550678275-4959-1-git-send-email-ian.stokes@intel.com> Cc: stephen@networkplumber.org, Ian Stokes To: dev@dpdk.org Return-path: Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by dpdk.org (Postfix) with ESMTP id 3C1B22BB0 for ; Wed, 20 Feb 2019 16:58:37 +0100 (CET) In-Reply-To: <1550678275-4959-1-git-send-email-ian.stokes@intel.com> List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" This commit sets the min and max supported MTU values for ixgbe VF devices via the ixgbevf_dev_set_mtu() function. Min MTU supported is set to ETHER_MIN_MTU and max mtu is calculated as the max packet length supported minus the transport overhead. As transport overhead is the same for VF and PF ixgbe devices, reuse MACRO 'IXGBE_ETH_OVERHEAD' to avoid duplication. Signed-off-by: Ian Stokes --- drivers/net/ixgbe/ixgbe_ethdev.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c index c4f6ff5bd..1a92a71cd 100644 --- a/drivers/net/ixgbe/ixgbe_ethdev.c +++ b/drivers/net/ixgbe/ixgbe_ethdev.c @@ -3843,6 +3843,7 @@ ixgbevf_dev_info_get(struct rte_eth_dev *dev, dev_info->max_tx_queues = (uint16_t)hw->mac.max_tx_queues; dev_info->min_rx_bufsize = 1024; /* cf BSIZEPACKET in SRRCTL reg */ dev_info->max_rx_pktlen = 9728; /* includes CRC, cf MAXFRS reg */ + dev_info->max_mtu = dev_info->max_rx_pktlen - IXGBE_ETH_OVERHEAD; dev_info->max_mac_addrs = hw->mac.num_rar_entries; dev_info->max_hash_mac_addrs = IXGBE_VMDQ_NUM_UC_MAC; dev_info->max_vfs = pci_dev->max_vfs; @@ -6330,7 +6331,7 @@ static int ixgbevf_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu) { struct ixgbe_hw *hw; - uint32_t max_frame = mtu + ETHER_HDR_LEN + ETHER_CRC_LEN; + uint32_t max_frame = mtu + IXGBE_ETH_OVERHEAD; struct rte_eth_rxmode *rx_conf = &dev->data->dev_conf.rxmode; hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); -- 2.13.6