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Date: Mon, 11 Dec 2017 06:41:10 -0500
From: Michael Chan <michael.chan@...adcom.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, andrew.gospodarek@...adcom.com,
Ariel Elior <Ariel.Elior@...ium.com>,
everest-linux-l2@...ium.com
Subject: [PATCH net-next v4 5/5] 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 <Ariel.Elior@...ium.com>
Cc: everest-linux-l2@...ium.com
Acked-by: Manish Chopra <manish.chopra@...ium.com>
Signed-off-by: Michael Chan <michael.chan@...adcom.com>
---
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 a3a70ad..8a33651 100644
--- a/drivers/net/ethernet/qlogic/qede/qede.h
+++ b/drivers/net/ethernet/qlogic/qede/qede.h
@@ -494,6 +494,8 @@ int qede_free_tx_pkt(struct qede_dev *edev,
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 dae7412..4ca3847 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 c1a0708..77aa826 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 57332b3..90d79ae 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_main.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_main.c
@@ -545,6 +545,7 @@ static int qede_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
#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 int qede_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
.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 int qede_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
.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)
--
1.8.3.1
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