From 18c602dee47268248c95bc0032006e2633e480b7 Mon Sep 17 00:00:00 2001 From: Michael Chan Date: Sat, 16 Dec 2017 03:09:44 -0500 Subject: [PATCH] qede: Use NETIF_F_GRO_HW. Advertise NETIF_F_GRO_HW and set edev->gro_disable according to the feature flag. Add qede_fix_features() to drop NETIF_F_GRO_HW if XDP is running or MTU does not support GRO_HW or GRO is not set. qede_change_mtu() also checks and disables GRO_HW if MTU is not supported. Cc: Ariel Elior Cc: everest-linux-l2@cavium.com Acked-by: Manish Chopra Signed-off-by: Michael Chan Acked-by: Manish Chopra Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qede/qede.h | 2 ++ drivers/net/ethernet/qlogic/qede/qede_ethtool.c | 3 +++ drivers/net/ethernet/qlogic/qede/qede_filter.c | 21 ++++++++++++++------- drivers/net/ethernet/qlogic/qede/qede_main.c | 17 ++++++----------- 4 files changed, 25 insertions(+), 18 deletions(-) diff --git a/drivers/net/ethernet/qlogic/qede/qede.h b/drivers/net/ethernet/qlogic/qede/qede.h index a3a70ade411f..8a336517baac 100644 --- a/drivers/net/ethernet/qlogic/qede/qede.h +++ b/drivers/net/ethernet/qlogic/qede/qede.h @@ -494,6 +494,8 @@ int qede_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid); void qede_vlan_mark_nonconfigured(struct qede_dev *edev); int qede_configure_vlan_filters(struct qede_dev *edev); +netdev_features_t qede_fix_features(struct net_device *dev, + netdev_features_t features); int qede_set_features(struct net_device *dev, netdev_features_t features); void qede_set_rx_mode(struct net_device *ndev); void qede_config_rx_mode(struct net_device *ndev); diff --git a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c index dae741270022..4ca3847fffd4 100644 --- a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c +++ b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c @@ -940,6 +940,9 @@ int qede_change_mtu(struct net_device *ndev, int new_mtu) DP_VERBOSE(edev, (NETIF_MSG_IFUP | NETIF_MSG_IFDOWN), "Configuring MTU size of %d\n", new_mtu); + if (new_mtu > PAGE_SIZE) + ndev->features &= ~NETIF_F_GRO_HW; + /* Set the mtu field and re-start the interface if needed */ args.u.mtu = new_mtu; args.func = &qede_update_mtu; diff --git a/drivers/net/ethernet/qlogic/qede/qede_filter.c b/drivers/net/ethernet/qlogic/qede/qede_filter.c index c1a0708a7d7c..77aa826227e5 100644 --- a/drivers/net/ethernet/qlogic/qede/qede_filter.c +++ b/drivers/net/ethernet/qlogic/qede/qede_filter.c @@ -895,19 +895,26 @@ static void qede_set_features_reload(struct qede_dev *edev, edev->ndev->features = args->u.features; } +netdev_features_t qede_fix_features(struct net_device *dev, + netdev_features_t features) +{ + struct qede_dev *edev = netdev_priv(dev); + + if (edev->xdp_prog || edev->ndev->mtu > PAGE_SIZE || + !(features & NETIF_F_GRO)) + features &= ~NETIF_F_GRO_HW; + + return features; +} + int qede_set_features(struct net_device *dev, netdev_features_t features) { struct qede_dev *edev = netdev_priv(dev); netdev_features_t changes = features ^ dev->features; bool need_reload = false; - /* No action needed if hardware GRO is disabled during driver load */ - if (changes & NETIF_F_GRO) { - if (dev->features & NETIF_F_GRO) - need_reload = !edev->gro_disable; - else - need_reload = edev->gro_disable; - } + if (changes & NETIF_F_GRO_HW) + need_reload = true; if (need_reload) { struct qede_reload_args args; diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c index 57332b3e5e64..90d79ae2a48f 100644 --- a/drivers/net/ethernet/qlogic/qede/qede_main.c +++ b/drivers/net/ethernet/qlogic/qede/qede_main.c @@ -545,6 +545,7 @@ static const struct net_device_ops qede_netdev_ops = { #endif .ndo_vlan_rx_add_vid = qede_vlan_rx_add_vid, .ndo_vlan_rx_kill_vid = qede_vlan_rx_kill_vid, + .ndo_fix_features = qede_fix_features, .ndo_set_features = qede_set_features, .ndo_get_stats64 = qede_get_stats64, #ifdef CONFIG_QED_SRIOV @@ -572,6 +573,7 @@ static const struct net_device_ops qede_netdev_vf_ops = { .ndo_change_mtu = qede_change_mtu, .ndo_vlan_rx_add_vid = qede_vlan_rx_add_vid, .ndo_vlan_rx_kill_vid = qede_vlan_rx_kill_vid, + .ndo_fix_features = qede_fix_features, .ndo_set_features = qede_set_features, .ndo_get_stats64 = qede_get_stats64, .ndo_udp_tunnel_add = qede_udp_tunnel_add, @@ -589,6 +591,7 @@ static const struct net_device_ops qede_netdev_vf_xdp_ops = { .ndo_change_mtu = qede_change_mtu, .ndo_vlan_rx_add_vid = qede_vlan_rx_add_vid, .ndo_vlan_rx_kill_vid = qede_vlan_rx_kill_vid, + .ndo_fix_features = qede_fix_features, .ndo_set_features = qede_set_features, .ndo_get_stats64 = qede_get_stats64, .ndo_udp_tunnel_add = qede_udp_tunnel_add, @@ -676,7 +679,7 @@ static void qede_init_ndev(struct qede_dev *edev) ndev->priv_flags |= IFF_UNICAST_FLT; /* user-changeble features */ - hw_features = NETIF_F_GRO | NETIF_F_SG | + hw_features = NETIF_F_GRO | NETIF_F_GRO_HW | NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_TSO | NETIF_F_TSO6; @@ -1228,18 +1231,9 @@ static int qede_alloc_sge_mem(struct qede_dev *edev, struct qede_rx_queue *rxq) dma_addr_t mapping; int i; - /* Don't perform FW aggregations in case of XDP */ - if (edev->xdp_prog) - edev->gro_disable = 1; - if (edev->gro_disable) return 0; - if (edev->ndev->mtu > PAGE_SIZE) { - edev->gro_disable = 1; - return 0; - } - for (i = 0; i < ETH_TPA_MAX_AGGS_NUM; i++) { struct qede_agg_info *tpa_info = &rxq->tpa_info[i]; struct sw_rx_data *replace_buf = &tpa_info->buffer; @@ -1269,6 +1263,7 @@ static int qede_alloc_sge_mem(struct qede_dev *edev, struct qede_rx_queue *rxq) err: qede_free_sge_mem(edev, rxq); edev->gro_disable = 1; + edev->ndev->features &= ~NETIF_F_GRO_HW; return -ENOMEM; } @@ -1511,7 +1506,7 @@ static void qede_init_fp(struct qede_dev *edev) edev->ndev->name, queue_id); } - edev->gro_disable = !(edev->ndev->features & NETIF_F_GRO); + edev->gro_disable = !(edev->ndev->features & NETIF_F_GRO_HW); } static int qede_set_real_num_queues(struct qede_dev *edev) -- 2.11.0