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r8169: change back SG and TSO to be disabled by default

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[ Upstream commit 95099c569a ]

There has been a number of reports that using SG/TSO on different chip
versions results in tx timeouts. However for a lot of people SG/TSO
works fine. Therefore disable both features by default, but allow users
to enable them. Use at own risk!

Fixes: 93681cd7d9 ("r8169: enable HW csum and TSO")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Heiner Kallweit
2020-04-04 23:48:45 +02:00
committed by Greg Kroah-Hartman
parent 2c0aea8b6e
commit c14c25c1a8
1 changed files with 16 additions and 18 deletions
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34
drivers/net/ethernet/realtek/r8169_main.c
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@@ -5549,12 +5549,10 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
netif_napi_add(dev, &tp->napi, rtl8169_poll, NAPI_POLL_WEIGHT);
dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO |
NETIF_F_RXCSUM | NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_CTAG_RX;
dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO |
NETIF_F_RXCSUM | NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_CTAG_RX;
dev->features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
dev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO |
NETIF_F_HIGHDMA;
dev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
@@ -5572,25 +5570,25 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
dev->hw_features &= ~NETIF_F_HW_VLAN_CTAG_RX;
if (rtl_chip_supports_csum_v2(tp)) {
dev->hw_features |= NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
dev->features |= NETIF_F_IPV6_CSUM | NETIF_F_TSO6;
dev->hw_features |= NETIF_F_IPV6_CSUM;
dev->features |= NETIF_F_IPV6_CSUM;
}
/* There has been a number of reports that using SG/TSO results in
* tx timeouts. However for a lot of people SG/TSO works fine.
* Therefore disable both features by default, but allow users to
* enable them. Use at own risk!
*/
if (rtl_chip_supports_csum_v2(tp)) {
dev->hw_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6;
dev->gso_max_size = RTL_GSO_MAX_SIZE_V2;
dev->gso_max_segs = RTL_GSO_MAX_SEGS_V2;
} else {
dev->hw_features |= NETIF_F_SG | NETIF_F_TSO;
dev->gso_max_size = RTL_GSO_MAX_SIZE_V1;
dev->gso_max_segs = RTL_GSO_MAX_SEGS_V1;
}
/* RTL8168e-vl and one RTL8168c variant are known to have a
* HW issue with TSO.
*/
if (tp->mac_version == RTL_GIGA_MAC_VER_34 ||
tp->mac_version == RTL_GIGA_MAC_VER_22) {
dev->vlan_features &= ~(NETIF_F_ALL_TSO | NETIF_F_SG);
dev->hw_features &= ~(NETIF_F_ALL_TSO | NETIF_F_SG);
dev->features &= ~(NETIF_F_ALL_TSO | NETIF_F_SG);
}
dev->hw_features |= NETIF_F_RXALL;
dev->hw_features |= NETIF_F_RXFCS;