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Date: Sun, 10 Apr 2011 15:13:21 +0200 (CEST)
From: Michał Mirosław <mirq-linux@...e.qmqm.pl>
To: netdev@...r.kernel.org
Cc: Stephen Hemminger <shemminger@...ux-foundation.org>
Subject: [PATCH] net: sky2: convert to hw_features
Caveats:
- driver modifies vlan_features on HW VLAN TX changes
- broken RX checksum will be reenabled on features change
Signed-off-by: Michał Mirosław <mirq-linux@...e.qmqm.pl>
---
drivers/net/sky2.c | 165 +++++++++++++++++++---------------------------------
drivers/net/sky2.h | 1 -
2 files changed, 61 insertions(+), 105 deletions(-)
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index afc925a..b461290 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -1198,12 +1198,12 @@ static void rx_set_checksum(struct sky2_port *sky2)
sky2_write32(sky2->hw,
Q_ADDR(rxqaddr[sky2->port], Q_CSR),
- (sky2->flags & SKY2_FLAG_RX_CHECKSUM)
+ (sky2->netdev->features & NETIF_F_RXCSUM)
? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
}
/* Enable/disable receive hash calculation (RSS) */
-static void rx_set_rss(struct net_device *dev)
+static void rx_set_rss(struct net_device *dev, u32 features)
{
struct sky2_port *sky2 = netdev_priv(dev);
struct sky2_hw *hw = sky2->hw;
@@ -1216,7 +1216,7 @@ static void rx_set_rss(struct net_device *dev)
}
/* Program RSS initial values */
- if (dev->features & NETIF_F_RXHASH) {
+ if (features & NETIF_F_RXHASH) {
u32 key[nkeys];
get_random_bytes(key, nkeys * sizeof(u32));
@@ -1322,32 +1322,32 @@ static int sky2_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
return err;
}
-#define NETIF_F_ALL_VLAN (NETIF_F_HW_VLAN_TX|NETIF_F_HW_VLAN_RX)
+#define SKY2_VLAN_OFFLOADS (NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_TSO)
-static void sky2_vlan_mode(struct net_device *dev)
+static void sky2_vlan_mode(struct net_device *dev, u32 features)
{
struct sky2_port *sky2 = netdev_priv(dev);
struct sky2_hw *hw = sky2->hw;
u16 port = sky2->port;
- if (dev->features & NETIF_F_HW_VLAN_RX)
+ if (features & NETIF_F_HW_VLAN_RX)
sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
RX_VLAN_STRIP_ON);
else
sky2_write32(hw, SK_REG(port, RX_GMF_CTRL_T),
RX_VLAN_STRIP_OFF);
- dev->vlan_features = dev->features &~ NETIF_F_ALL_VLAN;
- if (dev->features & NETIF_F_HW_VLAN_TX)
+ if (features & NETIF_F_HW_VLAN_TX) {
sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
TX_VLAN_TAG_ON);
- else {
+
+ dev->vlan_features |= SKY2_VLAN_OFFLOADS;
+ } else {
sky2_write32(hw, SK_REG(port, TX_GMF_CTRL_T),
TX_VLAN_TAG_OFF);
/* Can't do transmit offload of vlan without hw vlan */
- dev->vlan_features &= ~(NETIF_F_TSO | NETIF_F_SG
- | NETIF_F_ALL_CSUM);
+ dev->vlan_features &= ~SKY2_VLAN_OFFLOADS;
}
}
@@ -1463,7 +1463,7 @@ static void sky2_rx_start(struct sky2_port *sky2)
rx_set_checksum(sky2);
if (!(hw->flags & SKY2_HW_RSS_BROKEN))
- rx_set_rss(sky2->netdev);
+ rx_set_rss(sky2->netdev, sky2->netdev->features);
/* submit Rx ring */
for (i = 0; i < sky2->rx_pending; i++) {
@@ -1626,7 +1626,8 @@ static void sky2_hw_up(struct sky2_port *sky2)
sky2_prefetch_init(hw, txqaddr[port], sky2->tx_le_map,
sky2->tx_ring_size - 1);
- sky2_vlan_mode(sky2->netdev);
+ sky2_vlan_mode(sky2->netdev, sky2->netdev->features);
+ netdev_update_features(sky2->netdev);
sky2_rx_start(sky2);
}
@@ -2261,12 +2262,9 @@ static int sky2_change_mtu(struct net_device *dev, int new_mtu)
hw->chip_id == CHIP_ID_YUKON_FE_P))
return -EINVAL;
- /* TSO, etc on Yukon Ultra and MTU > 1500 not supported */
- if (new_mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U)
- dev->features &= ~(NETIF_F_TSO|NETIF_F_SG|NETIF_F_ALL_CSUM);
-
if (!netif_running(dev)) {
dev->mtu = new_mtu;
+ netdev_update_features(dev);
return 0;
}
@@ -2288,6 +2286,7 @@ static int sky2_change_mtu(struct net_device *dev, int new_mtu)
sky2_rx_clean(sky2);
dev->mtu = new_mtu;
+ netdev_update_features(dev);
mode = DATA_BLIND_VAL(DATA_BLIND_DEF) |
GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
@@ -2535,8 +2534,11 @@ static void sky2_rx_checksum(struct sky2_port *sky2, u32 status)
"%s: receive checksum problem (status = %#x)\n",
sky2->netdev->name, status);
- /* Disable checksum offload */
- sky2->flags &= ~SKY2_FLAG_RX_CHECKSUM;
+ /* Disable checksum offload
+ * It will be reenabled on next ndo_set_features, but if it's
+ * really broken, will get disabled again
+ */
+ sky2->netdev->features &= ~NETIF_F_RXCSUM;
sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
BMU_DIS_RX_CHKSUM);
}
@@ -2591,7 +2593,7 @@ static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
/* This chip reports checksum status differently */
if (hw->flags & SKY2_HW_NEW_LE) {
- if ((sky2->flags & SKY2_FLAG_RX_CHECKSUM) &&
+ if ((dev->features & NETIF_F_RXCSUM) &&
(le->css & (CSS_ISIPV4 | CSS_ISIPV6)) &&
(le->css & CSS_TCPUDPCSOK))
skb->ip_summed = CHECKSUM_UNNECESSARY;
@@ -2616,7 +2618,7 @@ static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx)
sky2->rx_tag = length;
/* fall through */
case OP_RXCHKS:
- if (likely(sky2->flags & SKY2_FLAG_RX_CHECKSUM))
+ if (likely(dev->features & NETIF_F_RXCSUM))
sky2_rx_checksum(sky2, status);
break;
@@ -3552,28 +3554,6 @@ static const struct sky2_stat {
{ "tx_fifo_underrun", GM_TXE_FIFO_UR },
};
-static u32 sky2_get_rx_csum(struct net_device *dev)
-{
- struct sky2_port *sky2 = netdev_priv(dev);
-
- return !!(sky2->flags & SKY2_FLAG_RX_CHECKSUM);
-}
-
-static int sky2_set_rx_csum(struct net_device *dev, u32 data)
-{
- struct sky2_port *sky2 = netdev_priv(dev);
-
- if (data)
- sky2->flags |= SKY2_FLAG_RX_CHECKSUM;
- else
- sky2->flags &= ~SKY2_FLAG_RX_CHECKSUM;
-
- sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
- data ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
-
- return 0;
-}
-
static u32 sky2_get_msglevel(struct net_device *netdev)
{
struct sky2_port *sky2 = netdev_priv(netdev);
@@ -4084,34 +4064,6 @@ static void sky2_get_regs(struct net_device *dev, struct ethtool_regs *regs,
}
}
-/* In order to do Jumbo packets on these chips, need to turn off the
- * transmit store/forward. Therefore checksum offload won't work.
- */
-static int no_tx_offload(struct net_device *dev)
-{
- const struct sky2_port *sky2 = netdev_priv(dev);
- const struct sky2_hw *hw = sky2->hw;
-
- return dev->mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U;
-}
-
-static int sky2_set_tx_csum(struct net_device *dev, u32 data)
-{
- if (data && no_tx_offload(dev))
- return -EINVAL;
-
- return ethtool_op_set_tx_csum(dev, data);
-}
-
-
-static int sky2_set_tso(struct net_device *dev, u32 data)
-{
- if (data && no_tx_offload(dev))
- return -EINVAL;
-
- return ethtool_op_set_tso(dev, data);
-}
-
static int sky2_get_eeprom_len(struct net_device *dev)
{
struct sky2_port *sky2 = netdev_priv(dev);
@@ -4214,31 +4166,36 @@ static int sky2_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom
return sky2_vpd_write(sky2->hw, cap, data, eeprom->offset, eeprom->len);
}
-static int sky2_set_flags(struct net_device *dev, u32 data)
+static u32 sky2_fix_features(struct net_device *dev, u32 features)
+{
+ const struct sky2_port *sky2 = netdev_priv(dev);
+ const struct sky2_hw *hw = sky2->hw;
+
+ /* In order to do Jumbo packets on these chips, need to turn off the
+ * transmit store/forward. Therefore checksum offload won't work.
+ */
+ if (dev->mtu > ETH_DATA_LEN && hw->chip_id == CHIP_ID_YUKON_EC_U)
+ features &= ~(NETIF_F_TSO|NETIF_F_SG|NETIF_F_ALL_CSUM);
+
+ return features;
+}
+
+static int sky2_set_features(struct net_device *dev, u32 features)
{
struct sky2_port *sky2 = netdev_priv(dev);
- unsigned long old_feat = dev->features;
- u32 supported = 0;
- int rc;
+ u32 changed = dev->features ^ features;
- if (!(sky2->hw->flags & SKY2_HW_RSS_BROKEN))
- supported |= ETH_FLAG_RXHASH;
+ if (changed & NETIF_F_RXCSUM) {
+ u32 on = features & NETIF_F_RXCSUM;
+ sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR),
+ on ? BMU_ENA_RX_CHKSUM : BMU_DIS_RX_CHKSUM);
+ }
- if (!(sky2->hw->flags & SKY2_HW_VLAN_BROKEN))
- supported |= ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN;
+ if (changed & NETIF_F_RXHASH)
+ rx_set_rss(dev, features);
- printk(KERN_DEBUG "sky2 set_flags: supported %x data %x\n",
- supported, data);
-
- rc = ethtool_op_set_flags(dev, data, supported);
- if (rc)
- return rc;
-
- if ((old_feat ^ dev->features) & NETIF_F_RXHASH)
- rx_set_rss(dev);
-
- if ((old_feat ^ dev->features) & NETIF_F_ALL_VLAN)
- sky2_vlan_mode(dev);
+ if (changed & (NETIF_F_HW_VLAN_TX|NETIF_F_HW_VLAN_RX))
+ sky2_vlan_mode(dev, features);
return 0;
}
@@ -4258,11 +4215,6 @@ static const struct ethtool_ops sky2_ethtool_ops = {
.get_eeprom_len = sky2_get_eeprom_len,
.get_eeprom = sky2_get_eeprom,
.set_eeprom = sky2_set_eeprom,
- .set_sg = ethtool_op_set_sg,
- .set_tx_csum = sky2_set_tx_csum,
- .set_tso = sky2_set_tso,
- .get_rx_csum = sky2_get_rx_csum,
- .set_rx_csum = sky2_set_rx_csum,
.get_strings = sky2_get_strings,
.get_coalesce = sky2_get_coalesce,
.set_coalesce = sky2_set_coalesce,
@@ -4273,8 +4225,6 @@ static const struct ethtool_ops sky2_ethtool_ops = {
.set_phys_id = sky2_set_phys_id,
.get_sset_count = sky2_get_sset_count,
.get_ethtool_stats = sky2_get_ethtool_stats,
- .set_flags = sky2_set_flags,
- .get_flags = ethtool_op_get_flags,
};
#ifdef CONFIG_SKY2_DEBUG
@@ -4554,6 +4504,8 @@ static const struct net_device_ops sky2_netdev_ops[2] = {
.ndo_set_mac_address = sky2_set_mac_address,
.ndo_set_multicast_list = sky2_set_multicast,
.ndo_change_mtu = sky2_change_mtu,
+ .ndo_fix_features = sky2_fix_features,
+ .ndo_set_features = sky2_set_features,
.ndo_tx_timeout = sky2_tx_timeout,
.ndo_get_stats64 = sky2_get_stats,
#ifdef CONFIG_NET_POLL_CONTROLLER
@@ -4569,6 +4521,8 @@ static const struct net_device_ops sky2_netdev_ops[2] = {
.ndo_set_mac_address = sky2_set_mac_address,
.ndo_set_multicast_list = sky2_set_multicast,
.ndo_change_mtu = sky2_change_mtu,
+ .ndo_fix_features = sky2_fix_features,
+ .ndo_set_features = sky2_set_features,
.ndo_tx_timeout = sky2_tx_timeout,
.ndo_get_stats64 = sky2_get_stats,
},
@@ -4601,7 +4555,7 @@ static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
/* Auto speed and flow control */
sky2->flags = SKY2_FLAG_AUTO_SPEED | SKY2_FLAG_AUTO_PAUSE;
if (hw->chip_id != CHIP_ID_YUKON_XL)
- sky2->flags |= SKY2_FLAG_RX_CHECKSUM;
+ dev->hw_features |= NETIF_F_RXCSUM;
sky2->flow_mode = FC_BOTH;
@@ -4620,18 +4574,21 @@ static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
sky2->port = port;
- dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG
- | NETIF_F_TSO | NETIF_F_GRO;
+ dev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_TSO;
if (highmem)
dev->features |= NETIF_F_HIGHDMA;
/* Enable receive hashing unless hardware is known broken */
if (!(hw->flags & SKY2_HW_RSS_BROKEN))
- dev->features |= NETIF_F_RXHASH;
+ dev->hw_features |= NETIF_F_RXHASH;
- if (!(hw->flags & SKY2_HW_VLAN_BROKEN))
- dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
+ if (!(hw->flags & SKY2_HW_VLAN_BROKEN)) {
+ dev->hw_features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
+ dev->vlan_features |= SKY2_VLAN_OFFLOADS;
+ }
+
+ dev->features |= dev->hw_features;
/* read the mac address */
memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN);
diff --git a/drivers/net/sky2.h b/drivers/net/sky2.h
index 6861b0e..f413eaa 100644
--- a/drivers/net/sky2.h
+++ b/drivers/net/sky2.h
@@ -2254,7 +2254,6 @@ struct sky2_port {
u8 wol; /* WAKE_ bits */
u8 duplex; /* DUPLEX_HALF, DUPLEX_FULL */
u16 flags;
-#define SKY2_FLAG_RX_CHECKSUM 0x0001
#define SKY2_FLAG_AUTO_SPEED 0x0002
#define SKY2_FLAG_AUTO_PAUSE 0x0004
--
1.7.2.5
--
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