From 8832837c6e64a75be31f32c49da261db15054c0d Mon Sep 17 00:00:00 2001 From: Xiaoyun Li Date: Tue, 4 Dec 2018 12:37:57 +0800 Subject: [PATCH] net/ixgbe: fix overwriting RSS RETA When starting the device, the RSS table is initialized. So the RSS update before device_start would be overwritten. This patch allows users to update the RSS reta table before device_start. Fixes: db5b65301dde ("ethdev: allow to set RSS hash computation flags and/or key") Cc: stable@dpdk.org Signed-off-by: Xiaoyun Li Acked-by: Qi Zhang --- drivers/net/ixgbe/ixgbe_ethdev.c | 11 +++++++++++ drivers/net/ixgbe/ixgbe_ethdev.h | 3 +++ drivers/net/ixgbe/ixgbe_rxtx.c | 24 ++++++++++++++---------- 3 files changed, 28 insertions(+), 10 deletions(-) diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c index 91ba6201de..749311048c 100644 --- a/drivers/net/ixgbe/ixgbe_ethdev.c +++ b/drivers/net/ixgbe/ixgbe_ethdev.c @@ -2790,6 +2790,8 @@ static void ixgbe_dev_stop(struct rte_eth_dev *dev) { struct rte_eth_link link; + struct ixgbe_adapter *adapter = + (struct ixgbe_adapter *)dev->data->dev_private; struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); struct ixgbe_vf_info *vfinfo = @@ -2850,6 +2852,8 @@ ixgbe_dev_stop(struct rte_eth_dev *dev) /* reset hierarchy commit */ tm_conf->committed = false; + + adapter->rss_reta_updated = 0; } /* @@ -4779,6 +4783,8 @@ ixgbe_dev_rss_reta_update(struct rte_eth_dev *dev, uint8_t j, mask; uint32_t reta, r; uint16_t idx, shift; + struct ixgbe_adapter *adapter = + (struct ixgbe_adapter *)dev->data->dev_private; struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); uint32_t reta_reg; @@ -4820,6 +4826,7 @@ ixgbe_dev_rss_reta_update(struct rte_eth_dev *dev, } IXGBE_WRITE_REG(hw, reta_reg, reta); } + adapter->rss_reta_updated = 1; return 0; } @@ -5143,6 +5150,8 @@ static void ixgbevf_dev_stop(struct rte_eth_dev *dev) { struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); + struct ixgbe_adapter *adapter = + (struct ixgbe_adapter *)dev->data->dev_private; struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev); struct rte_intr_handle *intr_handle = &pci_dev->intr_handle; @@ -5172,6 +5181,8 @@ ixgbevf_dev_stop(struct rte_eth_dev *dev) rte_free(intr_handle->intr_vec); intr_handle->intr_vec = NULL; } + + adapter->rss_reta_updated = 0; } static void diff --git a/drivers/net/ixgbe/ixgbe_ethdev.h b/drivers/net/ixgbe/ixgbe_ethdev.h index d0b93968bd..565c69c9eb 100644 --- a/drivers/net/ixgbe/ixgbe_ethdev.h +++ b/drivers/net/ixgbe/ixgbe_ethdev.h @@ -490,6 +490,9 @@ struct ixgbe_adapter { struct rte_timecounter rx_tstamp_tc; struct rte_timecounter tx_tstamp_tc; struct ixgbe_tm_conf tm_conf; + + /* For RSS reta table update */ + uint8_t rss_reta_updated; }; struct ixgbe_vf_representor { diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c index 7771d0e6dc..9a79d18e49 100644 --- a/drivers/net/ixgbe/ixgbe_rxtx.c +++ b/drivers/net/ixgbe/ixgbe_rxtx.c @@ -3418,6 +3418,7 @@ static void ixgbe_rss_configure(struct rte_eth_dev *dev) { struct rte_eth_rss_conf rss_conf; + struct ixgbe_adapter *adapter; struct ixgbe_hw *hw; uint32_t reta; uint16_t i; @@ -3426,6 +3427,7 @@ ixgbe_rss_configure(struct rte_eth_dev *dev) uint32_t reta_reg; PMD_INIT_FUNC_TRACE(); + adapter = (struct ixgbe_adapter *)dev->data->dev_private; hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private); sp_reta_size = ixgbe_reta_size_get(hw->mac.type); @@ -3435,16 +3437,18 @@ ixgbe_rss_configure(struct rte_eth_dev *dev) * The byte-swap is needed because NIC registers are in * little-endian order. */ - reta = 0; - for (i = 0, j = 0; i < sp_reta_size; i++, j++) { - reta_reg = ixgbe_reta_reg_get(hw->mac.type, i); - - if (j == dev->data->nb_rx_queues) - j = 0; - reta = (reta << 8) | j; - if ((i & 3) == 3) - IXGBE_WRITE_REG(hw, reta_reg, - rte_bswap32(reta)); + if (adapter->rss_reta_updated == 0) { + reta = 0; + for (i = 0, j = 0; i < sp_reta_size; i++, j++) { + reta_reg = ixgbe_reta_reg_get(hw->mac.type, i); + + if (j == dev->data->nb_rx_queues) + j = 0; + reta = (reta << 8) | j; + if ((i & 3) == 3) + IXGBE_WRITE_REG(hw, reta_reg, + rte_bswap32(reta)); + } } /* -- 2.20.1