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Message-ID: <20101130163057.29978.92721.stgit@rechot.qmqm.pl>
Date: Tue, 30 Nov 2010 17:38:00 +0100 (CET)
From: MichałMirosław
<mirq-linux@...e.qmqm.pl>
To: netdev@...r.kernel.org
Cc: Ben Hutchings <bhutchings@...arflare.com>,
Jesse Gross <jesse@...ira.com>, Jon Mason <jon.mason@...r.com>,
Ramkrishna Vepa <Ramkrishna.Vepa@...r.com>,
Sivakumar Subramani <Sivakumar.Subramani@...r.com>,
Sreenivasa Honnur <Sreenivasa.Honnur@...r.com>
Subject: [PATCH v2] net: Fix too optimistic NETIF_F_HW_CSUM features
NETIF_F_HW_CSUM is a superset of NETIF_F_IP_CSUM+NETIF_F_IPV6_CSUM, but
some drivers miss the difference. Fix this and also fix UFO dependency
on checksumming offload as it makes the same mistake in assumptions.
Signed-off-by: Michał Mirosław <mirq-linux@...e.qmqm.pl>
---
Changes from v1:
- fixed compilation of jme driver
- enable vxge support for IPv6 checksum
---
drivers/net/vxge/vxge-ethtool.c | 2 +-
drivers/net/vxge/vxge-main.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c
index 102567e..2754280 100644
--- a/drivers/net/benet/be_main.c
+++ b/drivers/net/benet/be_main.c
@@ -2583,10 +2583,12 @@ static void be_netdev_init(struct net_device *netdev)
int i;
netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
- NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_HW_CSUM |
+ NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER |
+ NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
NETIF_F_GRO | NETIF_F_TSO6;
- netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
+ netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO |
+ NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
if (lancer_chip(adapter))
netdev->vlan_features |= NETIF_F_TSO6;
diff --git a/drivers/net/bnx2x/bnx2x_main.c b/drivers/net/bnx2x/bnx2x_main.c
index f53edfd..40ce95a 100644
--- a/drivers/net/bnx2x/bnx2x_main.c
+++ b/drivers/net/bnx2x/bnx2x_main.c
@@ -8761,7 +8761,7 @@ static int __devinit bnx2x_init_dev(struct pci_dev *pdev,
dev->netdev_ops = &bnx2x_netdev_ops;
bnx2x_set_ethtool_ops(dev);
dev->features |= NETIF_F_SG;
- dev->features |= NETIF_F_HW_CSUM;
+ dev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
if (bp->flags & USING_DAC_FLAG)
dev->features |= NETIF_F_HIGHDMA;
dev->features |= (NETIF_F_TSO | NETIF_F_TSO_ECN);
@@ -8769,7 +8769,7 @@ static int __devinit bnx2x_init_dev(struct pci_dev *pdev,
dev->features |= (NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX);
dev->vlan_features |= NETIF_F_SG;
- dev->vlan_features |= NETIF_F_HW_CSUM;
+ dev->vlan_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
if (bp->flags & USING_DAC_FLAG)
dev->vlan_features |= NETIF_F_HIGHDMA;
dev->vlan_features |= (NETIF_F_TSO | NETIF_F_TSO_ECN);
diff --git a/drivers/net/jme.c b/drivers/net/jme.c
index c57d9a4..2411e72 100644
--- a/drivers/net/jme.c
+++ b/drivers/net/jme.c
@@ -2076,12 +2076,11 @@ jme_change_mtu(struct net_device *netdev, int new_mtu)
}
if (new_mtu > 1900) {
- netdev->features &= ~(NETIF_F_HW_CSUM |
- NETIF_F_TSO |
- NETIF_F_TSO6);
+ netdev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
+ NETIF_F_TSO | NETIF_F_TSO6);
} else {
if (test_bit(JME_FLAG_TXCSUM, &jme->flags))
- netdev->features |= NETIF_F_HW_CSUM;
+ netdev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
if (test_bit(JME_FLAG_TSO, &jme->flags))
netdev->features |= NETIF_F_TSO | NETIF_F_TSO6;
}
@@ -2514,10 +2513,12 @@ jme_set_tx_csum(struct net_device *netdev, u32 on)
if (on) {
set_bit(JME_FLAG_TXCSUM, &jme->flags);
if (netdev->mtu <= 1900)
- netdev->features |= NETIF_F_HW_CSUM;
+ netdev->features |=
+ NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
} else {
clear_bit(JME_FLAG_TXCSUM, &jme->flags);
- netdev->features &= ~NETIF_F_HW_CSUM;
+ netdev->features &=
+ ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
}
return 0;
@@ -2797,7 +2798,8 @@ jme_init_one(struct pci_dev *pdev,
netdev->netdev_ops = &jme_netdev_ops;
netdev->ethtool_ops = &jme_ethtool_ops;
netdev->watchdog_timeo = TX_TIMEOUT;
- netdev->features = NETIF_F_HW_CSUM |
+ netdev->features = NETIF_F_IP_CSUM |
+ NETIF_F_IPV6_CSUM |
NETIF_F_SG |
NETIF_F_TSO |
NETIF_F_TSO6 |
diff --git a/drivers/net/pch_gbe/pch_gbe_ethtool.c b/drivers/net/pch_gbe/pch_gbe_ethtool.c
index c8cc32c..c8c873b 100644
--- a/drivers/net/pch_gbe/pch_gbe_ethtool.c
+++ b/drivers/net/pch_gbe/pch_gbe_ethtool.c
@@ -469,18 +469,6 @@ static int pch_gbe_set_rx_csum(struct net_device *netdev, u32 data)
}
/**
- * pch_gbe_get_tx_csum - Report whether transmit checksums are turned on or off
- * @netdev: Network interface device structure
- * Returns
- * true(1): Checksum On
- * false(0): Checksum Off
- */
-static u32 pch_gbe_get_tx_csum(struct net_device *netdev)
-{
- return (netdev->features & NETIF_F_HW_CSUM) != 0;
-}
-
-/**
* pch_gbe_set_tx_csum - Turn transmit checksums on or off
* @netdev: Network interface device structure
* @data: Checksum on[true] or off[false]
@@ -493,11 +481,7 @@ static int pch_gbe_set_tx_csum(struct net_device *netdev, u32 data)
struct pch_gbe_adapter *adapter = netdev_priv(netdev);
adapter->tx_csum = data;
- if (data)
- netdev->features |= NETIF_F_HW_CSUM;
- else
- netdev->features &= ~NETIF_F_HW_CSUM;
- return 0;
+ return ethtool_op_set_tx_ipv6_csum(netdev, data);
}
/**
@@ -572,7 +556,6 @@ static const struct ethtool_ops pch_gbe_ethtool_ops = {
.set_pauseparam = pch_gbe_set_pauseparam,
.get_rx_csum = pch_gbe_get_rx_csum,
.set_rx_csum = pch_gbe_set_rx_csum,
- .get_tx_csum = pch_gbe_get_tx_csum,
.set_tx_csum = pch_gbe_set_tx_csum,
.get_strings = pch_gbe_get_strings,
.get_ethtool_stats = pch_gbe_get_ethtool_stats,
diff --git a/drivers/net/pch_gbe/pch_gbe_main.c b/drivers/net/pch_gbe/pch_gbe_main.c
index afb7506..58e7903 100644
--- a/drivers/net/pch_gbe/pch_gbe_main.c
+++ b/drivers/net/pch_gbe/pch_gbe_main.c
@@ -2319,7 +2319,7 @@ static int pch_gbe_probe(struct pci_dev *pdev,
netdev->watchdog_timeo = PCH_GBE_WATCHDOG_PERIOD;
netif_napi_add(netdev, &adapter->napi,
pch_gbe_napi_poll, PCH_GBE_RX_WEIGHT);
- netdev->features = NETIF_F_HW_CSUM | NETIF_F_GRO;
+ netdev->features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_GRO;
pch_gbe_set_ethtool_ops(netdev);
pch_gbe_mac_reset_hw(&adapter->hw);
@@ -2358,9 +2358,9 @@ static int pch_gbe_probe(struct pci_dev *pdev,
pch_gbe_check_options(adapter);
if (adapter->tx_csum)
- netdev->features |= NETIF_F_HW_CSUM;
+ netdev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
else
- netdev->features &= ~NETIF_F_HW_CSUM;
+ netdev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
/* initialize the wol settings based on the eeprom settings */
adapter->wake_up_evt = PCH_GBE_WL_INIT_SETTING;
diff --git a/drivers/net/sc92031.c b/drivers/net/sc92031.c
index 417adf3..76290a8 100644
--- a/drivers/net/sc92031.c
+++ b/drivers/net/sc92031.c
@@ -1449,7 +1449,8 @@ static int __devinit sc92031_probe(struct pci_dev *pdev,
dev->irq = pdev->irq;
/* faked with skb_copy_and_csum_dev */
- dev->features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA;
+ dev->features = NETIF_F_SG | NETIF_F_HIGHDMA |
+ NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
dev->netdev_ops = &sc92031_netdev_ops;
dev->watchdog_timeo = TX_TIMEOUT;
diff --git a/drivers/net/stmmac/stmmac_ethtool.c b/drivers/net/stmmac/stmmac_ethtool.c
index f2695fd..fd719ed 100644
--- a/drivers/net/stmmac/stmmac_ethtool.c
+++ b/drivers/net/stmmac/stmmac_ethtool.c
@@ -197,16 +197,6 @@ static void stmmac_ethtool_gregs(struct net_device *dev,
}
}
-static int stmmac_ethtool_set_tx_csum(struct net_device *netdev, u32 data)
-{
- if (data)
- netdev->features |= NETIF_F_HW_CSUM;
- else
- netdev->features &= ~NETIF_F_HW_CSUM;
-
- return 0;
-}
-
static u32 stmmac_ethtool_get_rx_csum(struct net_device *dev)
{
struct stmmac_priv *priv = netdev_priv(dev);
@@ -370,7 +360,7 @@ static struct ethtool_ops stmmac_ethtool_ops = {
.get_link = ethtool_op_get_link,
.get_rx_csum = stmmac_ethtool_get_rx_csum,
.get_tx_csum = ethtool_op_get_tx_csum,
- .set_tx_csum = stmmac_ethtool_set_tx_csum,
+ .set_tx_csum = ethtool_op_set_tx_ipv6_csum,
.get_sg = ethtool_op_get_sg,
.set_sg = ethtool_op_set_sg,
.get_pauseparam = stmmac_get_pauseparam,
diff --git a/drivers/net/stmmac/stmmac_main.c b/drivers/net/stmmac/stmmac_main.c
index 730a6fd..bfc2d12 100644
--- a/drivers/net/stmmac/stmmac_main.c
+++ b/drivers/net/stmmac/stmmac_main.c
@@ -1494,7 +1494,8 @@ static int stmmac_probe(struct net_device *dev)
dev->netdev_ops = &stmmac_netdev_ops;
stmmac_set_ethtool_ops(dev);
- dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA);
+ dev->features |= NETIF_F_SG | NETIF_F_HIGHDMA |
+ NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
dev->watchdog_timeo = msecs_to_jiffies(watchdog);
#ifdef STMMAC_VLAN_TAG_USED
/* Both mac100 and gmac support receive VLAN tag detection */
@@ -1525,7 +1526,7 @@ static int stmmac_probe(struct net_device *dev)
DBG(probe, DEBUG, "%s: Scatter/Gather: %s - HW checksums: %s\n",
dev->name, (dev->features & NETIF_F_SG) ? "on" : "off",
- (dev->features & NETIF_F_HW_CSUM) ? "on" : "off");
+ (dev->features & NETIF_F_IP_CSUM) ? "on" : "off");
spin_lock_init(&priv->lock);
diff --git a/drivers/net/vxge/vxge-ethtool.c b/drivers/net/vxge/vxge-ethtool.c
index bc9bd10..1dd3a21 100644
--- a/drivers/net/vxge/vxge-ethtool.c
+++ b/drivers/net/vxge/vxge-ethtool.c
@@ -1177,7 +1177,7 @@ static const struct ethtool_ops vxge_ethtool_ops = {
.get_rx_csum = vxge_get_rx_csum,
.set_rx_csum = vxge_set_rx_csum,
.get_tx_csum = ethtool_op_get_tx_csum,
- .set_tx_csum = ethtool_op_set_tx_hw_csum,
+ .set_tx_csum = ethtool_op_set_tx_ipv6_csum,
.get_sg = ethtool_op_get_sg,
.set_sg = ethtool_op_set_sg,
.get_tso = ethtool_op_get_tso,
diff --git a/drivers/net/vxge/vxge-main.c b/drivers/net/vxge/vxge-main.c
index a21dae1..d339f5b 100644
--- a/drivers/net/vxge/vxge-main.c
+++ b/drivers/net/vxge/vxge-main.c
@@ -3368,7 +3368,7 @@ static int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
ndev->features |= NETIF_F_SG;
- ndev->features |= NETIF_F_HW_CSUM;
+ ndev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
"%s : checksuming enabled", __func__);
diff --git a/net/core/dev.c b/net/core/dev.c
index 3259d2c..622f85a 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5041,10 +5041,13 @@ unsigned long netdev_fix_features(unsigned long features, const char *name)
}
if (features & NETIF_F_UFO) {
- if (!(features & NETIF_F_GEN_CSUM)) {
+ /* maybe split UFO into V4 and V6? */
+ if (!((features & NETIF_F_GEN_CSUM) ||
+ (features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))
+ == (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))) {
if (name)
printk(KERN_ERR "%s: Dropping NETIF_F_UFO "
- "since no NETIF_F_HW_CSUM feature.\n",
+ "since no checksum offload features.\n",
name);
features &= ~NETIF_F_UFO;
}
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 956a9f4..d5bc2881 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -1171,7 +1171,9 @@ static int ethtool_set_ufo(struct net_device *dev, char __user *useraddr)
return -EFAULT;
if (edata.data && !(dev->features & NETIF_F_SG))
return -EINVAL;
- if (edata.data && !(dev->features & NETIF_F_HW_CSUM))
+ if (edata.data && !((dev->features & NETIF_F_GEN_CSUM) ||
+ (dev->features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))
+ == (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM)))
return -EINVAL;
return dev->ethtool_ops->set_ufo(dev, edata.data);
}
--
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