mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-08-23 01:10:04 +00:00
Code Issues Releases Wiki Activity

net/igb/e1000/e1000e: more robust ethtool duplex/speed configuration

Browse source 
This makes sure that one cannot request a 99Mbps full-duplex and get a
100Mbps half-duplex configuration in return due to the way the
speed/duplex parameters are handled internally.

Tested: e1000 works
Signed-off-by: David Decotigny <decot@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Decotigny 2011-04-27 18:32:43 +00:00 committed by David S. Miller
parent fbef7139a8
commit 14ad2513ed
7 changed files with 59 additions and 38 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/net/e1000/e1000.h
View file

@ -349,7 +349,7 @@ extern int e1000_up(struct e1000_adapter *adapter);
extern void e1000_down(struct e1000_adapter *adapter);
extern void e1000_reinit_locked(struct e1000_adapter *adapter);
extern void e1000_reset(struct e1000_adapter *adapter);
extern int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx);
extern int e1000_set_spd_dplx(struct e1000_adapter *adapter, u32 spd, u8 dplx);
extern int e1000_setup_all_rx_resources(struct e1000_adapter *adapter);
extern int e1000_setup_all_tx_resources(struct e1000_adapter *adapter);
extern void e1000_free_all_rx_resources(struct e1000_adapter *adapter);

2
drivers/net/e1000/e1000_ethtool.c
View file

@ -199,7 +199,7 @@ static int e1000_set_settings(struct net_device *netdev,
ecmd->advertising = hw->autoneg_advertised;
} else {
u32 speed = ethtool_cmd_speed(ecmd);
if (e1000_set_spd_dplx(adapter, speed + ecmd->duplex)) {
if (e1000_set_spd_dplx(adapter, speed, ecmd->duplex)) {
clear_bit(__E1000_RESETTING, &adapter->flags);
return -EINVAL;
}

42
drivers/net/e1000/e1000_main.c
View file

@ -96,7 +96,6 @@ int e1000_up(struct e1000_adapter *adapter);
void e1000_down(struct e1000_adapter *adapter);
void e1000_reinit_locked(struct e1000_adapter *adapter);
void e1000_reset(struct e1000_adapter *adapter);
int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx);
int e1000_setup_all_tx_resources(struct e1000_adapter *adapter);
int e1000_setup_all_rx_resources(struct e1000_adapter *adapter);
void e1000_free_all_tx_resources(struct e1000_adapter *adapter);
@ -4385,7 +4384,6 @@ static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
struct mii_ioctl_data *data = if_mii(ifr);
int retval;
u16 mii_reg;
u16 spddplx;
unsigned long flags;
if (hw->media_type != e1000_media_type_copper)
@ -4424,17 +4422,18 @@ static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
hw->autoneg = 1;
hw->autoneg_advertised = 0x2F;
} else {
u32 speed;
if (mii_reg & 0x40)
spddplx = SPEED_1000;
speed = SPEED_1000;
else if (mii_reg & 0x2000)
spddplx = SPEED_100;
speed = SPEED_100;
else
spddplx = SPEED_10;
spddplx += (mii_reg & 0x100)
? DUPLEX_FULL :
DUPLEX_HALF;
retval = e1000_set_spd_dplx(adapter,
spddplx);
speed = SPEED_10;
retval = e1000_set_spd_dplx(
adapter, speed,
((mii_reg & 0x100)
? DUPLEX_FULL :
DUPLEX_HALF));
if (retval)
return retval;
}
@ -4596,20 +4595,24 @@ static void e1000_restore_vlan(struct e1000_adapter *adapter)
}
}
int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx)
int e1000_set_spd_dplx(struct e1000_adapter *adapter, u32 spd, u8 dplx)
{
struct e1000_hw *hw = &adapter->hw;
hw->autoneg = 0;
/* Make sure dplx is at most 1 bit and lsb of speed is not set
* for the switch() below to work */
if ((spd & 1) || (dplx & ~1))
goto err_inval;
/* Fiber NICs only allow 1000 gbps Full duplex */
if ((hw->media_type == e1000_media_type_fiber) &&
spddplx != (SPEED_1000 + DUPLEX_FULL)) {
e_err(probe, "Unsupported Speed/Duplex configuration\n");
return -EINVAL;
}
spd != SPEED_1000 &&
dplx != DUPLEX_FULL)
goto err_inval;
switch (spddplx) {
switch (spd + dplx) {
case SPEED_10 + DUPLEX_HALF:
hw->forced_speed_duplex = e1000_10_half;
break;
@ -4628,10 +4631,13 @@ int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx)
break;
case SPEED_1000 + DUPLEX_HALF: /* not supported */
default:
e_err(probe, "Unsupported Speed/Duplex configuration\n");
return -EINVAL;
goto err_inval;
}
return 0;
err_inval:
e_err(probe, "Unsupported Speed/Duplex configuration\n");
return -EINVAL;
}
static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake)

24
drivers/net/e1000e/ethtool.c
View file

@ -200,20 +200,25 @@ static int e1000_get_settings(struct net_device *netdev,
return 0;
}
static int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx)
static int e1000_set_spd_dplx(struct e1000_adapter *adapter, u32 spd, u8 dplx)
{
struct e1000_mac_info *mac = &adapter->hw.mac;
mac->autoneg = 0;
/* Make sure dplx is at most 1 bit and lsb of speed is not set
* for the switch() below to work */
if ((spd & 1) || (dplx & ~1))
goto err_inval;
/* Fiber NICs only allow 1000 gbps Full duplex */
if ((adapter->hw.phy.media_type == e1000_media_type_fiber) &&
spddplx != (SPEED_1000 + DUPLEX_FULL)) {
e_err("Unsupported Speed/Duplex configuration\n");
return -EINVAL;
spd != SPEED_1000 &&
dplx != DUPLEX_FULL) {
goto err_inval;
}
switch (spddplx) {
switch (spd + dplx) {
case SPEED_10 + DUPLEX_HALF:
mac->forced_speed_duplex = ADVERTISE_10_HALF;
break;
@ -232,10 +237,13 @@ static int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx)
break;
case SPEED_1000 + DUPLEX_HALF: /* not supported */
default:
e_err("Unsupported Speed/Duplex configuration\n");
return -EINVAL;
goto err_inval;
}
return 0;
err_inval:
e_err("Unsupported Speed/Duplex configuration\n");
return -EINVAL;
}
static int e1000_set_settings(struct net_device *netdev,
@ -272,7 +280,7 @@ static int e1000_set_settings(struct net_device *netdev,
hw->fc.requested_mode = e1000_fc_default;
} else {
u32 speed = ethtool_cmd_speed(ecmd);
if (e1000_set_spd_dplx(adapter, speed + ecmd->duplex)) {
if (e1000_set_spd_dplx(adapter, speed, ecmd->duplex)) {
clear_bit(__E1000_RESETTING, &adapter->state);
return -EINVAL;
}

2
drivers/net/igb/igb.h
View file

@ -360,7 +360,7 @@ extern int igb_up(struct igb_adapter *);
extern void igb_down(struct igb_adapter *);
extern void igb_reinit_locked(struct igb_adapter *);
extern void igb_reset(struct igb_adapter *);
extern int igb_set_spd_dplx(struct igb_adapter *, u16);
extern int igb_set_spd_dplx(struct igb_adapter *, u32, u8);
extern int igb_setup_tx_resources(struct igb_ring *);
extern int igb_setup_rx_resources(struct igb_ring *);
extern void igb_free_tx_resources(struct igb_ring *);

2
drivers/net/igb/igb_ethtool.c
View file

@ -224,7 +224,7 @@ static int igb_set_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
hw->fc.requested_mode = e1000_fc_default;
} else {
u32 speed = ethtool_cmd_speed(ecmd);
if (igb_set_spd_dplx(adapter, speed + ecmd->duplex)) {
if (igb_set_spd_dplx(adapter, speed, ecmd->duplex)) {
clear_bit(__IGB_RESETTING, &adapter->state);
return -EINVAL;
}

23
drivers/net/igb/igb_main.c
View file

@ -6349,21 +6349,25 @@ static void igb_restore_vlan(struct igb_adapter *adapter)
}
}
int igb_set_spd_dplx(struct igb_adapter *adapter, u16 spddplx)
int igb_set_spd_dplx(struct igb_adapter *adapter, u32 spd, u8 dplx)
{
struct pci_dev *pdev = adapter->pdev;
struct e1000_mac_info *mac = &adapter->hw.mac;
mac->autoneg = 0;
/* Make sure dplx is at most 1 bit and lsb of speed is not set
* for the switch() below to work */
if ((spd & 1) || (dplx & ~1))
goto err_inval;
/* Fiber NIC's only allow 1000 Gbps Full duplex */
if ((adapter->hw.phy.media_type == e1000_media_type_internal_serdes) &&
spddplx != (SPEED_1000 + DUPLEX_FULL)) {
dev_err(&pdev->dev, "Unsupported Speed/Duplex configuration\n");
return -EINVAL;
}
spd != SPEED_1000 &&
dplx != DUPLEX_FULL)
goto err_inval;
switch (spddplx) {
switch (spd + dplx) {
case SPEED_10 + DUPLEX_HALF:
mac->forced_speed_duplex = ADVERTISE_10_HALF;
break;
@ -6382,10 +6386,13 @@ int igb_set_spd_dplx(struct igb_adapter *adapter, u16 spddplx)
break;
case SPEED_1000 + DUPLEX_HALF: /* not supported */
default:
dev_err(&pdev->dev, "Unsupported Speed/Duplex configuration\n");
return -EINVAL;
goto err_inval;
}
return 0;
err_inval:
dev_err(&pdev->dev, "Unsupported Speed/Duplex configuration\n");
return -EINVAL;
}
static int __igb_shutdown(struct pci_dev *pdev, bool *enable_wake)