On Tue, Aug 20, 2024 at 11:13:54PM +0200, Petr Valenta wrote:
> Dne 20. 08. 24 v 20:09 Bjorn Helgaas napsal(a):
> > On Mon, Aug 19, 2024 at 07:23:42AM +0200, Jiri Slaby wrote:
> > > On 19. 08. 24, 6:50, Jiri Slaby wrote:
> > > > CC e1000e guys + Jesse (due to 75a3f93b5383) + Bjorn (due to b2c289415b2b)
> > >
> > > Bjorn,
> > >
> > > I am confused by these changes:
> > > ==========================================
> > > @@ -291,16 +288,13 @@ static int e1000_set_link_ksettings(struct net_device
> > > *net
> > > dev,
> > > * duplex is forced.
> > > */
> > > if (cmd->base.eth_tp_mdix_ctrl) {
> > > - if (hw->phy.media_type != e1000_media_type_copper) {
> > > - ret_val = -EOPNOTSUPP;
> > > - goto out;
> > > - }
> > > + if (hw->phy.media_type != e1000_media_type_copper)
> > > + return -EOPNOTSUPP;
> > >
> > > if ((cmd->base.eth_tp_mdix_ctrl != ETH_TP_MDI_AUTO) &&
> > > (cmd->base.autoneg != AUTONEG_ENABLE)) {
> > > e_err("forcing MDI/MDI-X state is not supported when
> > > lin
> > > k speed and/or duplex are forced\n");
> > > - ret_val = -EINVAL;
> > > - goto out;
> > > + return -EINVAL;
> > > }
> > > }
> > >
> > > @@ -347,7 +341,6 @@ static int e1000_set_link_ksettings(struct net_device
> > > *netde
> > > v,
> > > }
> > >
> > > out:
> > > - pm_runtime_put_sync(netdev->dev.parent);
> > > clear_bit(__E1000_RESETTING, &adapter->state);
> > > return ret_val;
> > > }
> > > ==========================================
> > >
> > > So no more clear_bit(__E1000_RESETTING in the above fail paths. Is that
> > > intentional?
> >
> > Not intentional. Petr, do you have the ability to test the patch
> > below? I'm not sure it's the correct fix, but it reverts the pieces
> > of b2c289415b2b that Jiri pointed out.
>
> I tested the patch below but it didn't help. After the first boot with new
> kernel it looked promising as the irq storm only appeared for a few seconds,
> but with subsequent reboots it was the same as without the patch.
Thank you very much for testing that!
> To be sure, I also send the md5sum of ethtool.c after applying the patch:
>
> a25c003257538f16994b4d7c4260e894 ethtool.c
Thanks, that matches what I get when applying the patch on v6.10.
I'm at a loss. You could try reverting the entire b2c289415b2b commit
(patch for that is below).
If that doesn't help, I guess you could try reverting the other
commits Jiri mentioned:
76a0a3f9cc2f e1000e: fix force smbus during suspend flow
c93a6f62cb1b e1000e: Fix S0ix residency on corporate systems
bfd546a552e1 e1000e: move force SMBUS near the end of enable_ulp function
6918107e2540 net: e1000e & ixgbe: Remove PCI_HEADER_TYPE_MFD duplicates
1eb2cded45b3 net: annotate writes on dev->mtu from ndo_change_mtu()
b2c289415b2b e1000e: Remove redundant runtime resume for ethtool_ops
75a3f93b5383 net: intel: implement modern PM ops declarations
If you do this, I would revert 76a0a3f9cc2f, test, then revert
c93a6f62cb1b in addition, test, then revert bfd546a552e1 in addition,
etc.
commit 5e92945ffe5c ("Revert "e1000e: Remove redundant runtime resume for ethtool_ops"")
Author: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Date: Tue Aug 20 16:18:32 2024 -0500
Revert "e1000e: Remove redundant runtime resume for ethtool_ops"
This reverts commit b2c289415b2b2ef112b78d5e73b4acecf5db409e.
diff --git a/drivers/net/ethernet/intel/e1000e/ethtool.c b/drivers/net/ethernet/intel/e1000e/ethtool.c
index 9364bc2b4eb1..61fa2f6b3708 100644
--- a/drivers/net/ethernet/intel/e1000e/ethtool.c
+++ b/drivers/net/ethernet/intel/e1000e/ethtool.c
@@ -156,7 +156,7 @@ static int e1000_get_link_ksettings(struct net_device *netdev,
speed = adapter->link_speed;
cmd->base.duplex = adapter->link_duplex - 1;
}
- } else {
+ } else if (!pm_runtime_suspended(netdev->dev.parent)) {
u32 status = er32(STATUS);
if (status & E1000_STATUS_LU) {
@@ -274,13 +274,16 @@ static int e1000_set_link_ksettings(struct net_device *netdev,
ethtool_convert_link_mode_to_legacy_u32(&advertising,
cmd->link_modes.advertising);
+ pm_runtime_get_sync(netdev->dev.parent);
+
/* When SoL/IDER sessions are active, autoneg/speed/duplex
* cannot be changed
*/
if (hw->phy.ops.check_reset_block &&
hw->phy.ops.check_reset_block(hw)) {
e_err("Cannot change link characteristics when SoL/IDER is active.\n");
- return -EINVAL;
+ ret_val = -EINVAL;
+ goto out;
}
/* MDI setting is only allowed when autoneg enabled because
@@ -288,13 +291,16 @@ static int e1000_set_link_ksettings(struct net_device *netdev,
* duplex is forced.
*/
if (cmd->base.eth_tp_mdix_ctrl) {
- if (hw->phy.media_type != e1000_media_type_copper)
- return -EOPNOTSUPP;
+ if (hw->phy.media_type != e1000_media_type_copper) {
+ ret_val = -EOPNOTSUPP;
+ goto out;
+ }
if ((cmd->base.eth_tp_mdix_ctrl != ETH_TP_MDI_AUTO) &&
(cmd->base.autoneg != AUTONEG_ENABLE)) {
e_err("forcing MDI/MDI-X state is not supported when link speed and/or duplex are forced\n");
- return -EINVAL;
+ ret_val = -EINVAL;
+ goto out;
}
}
@@ -341,6 +347,7 @@ static int e1000_set_link_ksettings(struct net_device *netdev,
}
out:
+ pm_runtime_put_sync(netdev->dev.parent);
clear_bit(__E1000_RESETTING, &adapter->state);
return ret_val;
}
@@ -376,6 +383,8 @@ static int e1000_set_pauseparam(struct net_device *netdev,
while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
usleep_range(1000, 2000);
+ pm_runtime_get_sync(netdev->dev.parent);
+
if (adapter->fc_autoneg == AUTONEG_ENABLE) {
hw->fc.requested_mode = e1000_fc_default;
if (netif_running(adapter->netdev)) {
@@ -408,6 +417,7 @@ static int e1000_set_pauseparam(struct net_device *netdev,
}
out:
+ pm_runtime_put_sync(netdev->dev.parent);
clear_bit(__E1000_RESETTING, &adapter->state);
return retval;
}
@@ -438,6 +448,8 @@ static void e1000_get_regs(struct net_device *netdev,
u32 *regs_buff = p;
u16 phy_data;
+ pm_runtime_get_sync(netdev->dev.parent);
+
memset(p, 0, E1000_REGS_LEN * sizeof(u32));
regs->version = (1u << 24) |
@@ -483,6 +495,8 @@ static void e1000_get_regs(struct net_device *netdev,
e1e_rphy(hw, MII_STAT1000, &phy_data);
regs_buff[24] = (u32)phy_data; /* phy local receiver status */
regs_buff[25] = regs_buff[24]; /* phy remote receiver status */
+
+ pm_runtime_put_sync(netdev->dev.parent);
}
static int e1000_get_eeprom_len(struct net_device *netdev)
@@ -515,6 +529,8 @@ static int e1000_get_eeprom(struct net_device *netdev,
if (!eeprom_buff)
return -ENOMEM;
+ pm_runtime_get_sync(netdev->dev.parent);
+
if (hw->nvm.type == e1000_nvm_eeprom_spi) {
ret_val = e1000_read_nvm(hw, first_word,
last_word - first_word + 1,
@@ -528,6 +544,8 @@ static int e1000_get_eeprom(struct net_device *netdev,
}
}
+ pm_runtime_put_sync(netdev->dev.parent);
+
if (ret_val) {
/* a read error occurred, throw away the result */
memset(eeprom_buff, 0xff, sizeof(u16) *
@@ -577,6 +595,8 @@ static int e1000_set_eeprom(struct net_device *netdev,
ptr = (void *)eeprom_buff;
+ pm_runtime_get_sync(netdev->dev.parent);
+
if (eeprom->offset & 1) {
/* need read/modify/write of first changed EEPROM word */
/* only the second byte of the word is being modified */
@@ -617,6 +637,7 @@ static int e1000_set_eeprom(struct net_device *netdev,
ret_val = e1000e_update_nvm_checksum(hw);
out:
+ pm_runtime_put_sync(netdev->dev.parent);
kfree(eeprom_buff);
return ret_val;
}
@@ -712,6 +733,8 @@ static int e1000_set_ringparam(struct net_device *netdev,
}
}
+ pm_runtime_get_sync(netdev->dev.parent);
+
e1000e_down(adapter, true);
/* We can't just free everything and then setup again, because the
@@ -750,6 +773,7 @@ static int e1000_set_ringparam(struct net_device *netdev,
e1000e_free_tx_resources(temp_tx);
err_setup:
e1000e_up(adapter);
+ pm_runtime_put_sync(netdev->dev.parent);
free_temp:
vfree(temp_tx);
vfree(temp_rx);
@@ -1792,6 +1816,8 @@ static void e1000_diag_test(struct net_device *netdev,
u8 autoneg;
bool if_running = netif_running(netdev);
+ pm_runtime_get_sync(netdev->dev.parent);
+
set_bit(__E1000_TESTING, &adapter->state);
if (!if_running) {
@@ -1877,6 +1903,8 @@ static void e1000_diag_test(struct net_device *netdev,
}
msleep_interruptible(4 * 1000);
+
+ pm_runtime_put_sync(netdev->dev.parent);
}
static void e1000_get_wol(struct net_device *netdev,
@@ -2018,11 +2046,15 @@ static int e1000_set_coalesce(struct net_device *netdev,
adapter->itr_setting = adapter->itr & ~3;
}
+ pm_runtime_get_sync(netdev->dev.parent);
+
if (adapter->itr_setting != 0)
e1000e_write_itr(adapter, adapter->itr);
else
e1000e_write_itr(adapter, 0);
+ pm_runtime_put_sync(netdev->dev.parent);
+
return 0;
}
@@ -2036,7 +2068,9 @@ static int e1000_nway_reset(struct net_device *netdev)
if (!adapter->hw.mac.autoneg)
return -EINVAL;
+ pm_runtime_get_sync(netdev->dev.parent);
e1000e_reinit_locked(adapter);
+ pm_runtime_put_sync(netdev->dev.parent);
return 0;
}
@@ -2050,8 +2084,12 @@ static void e1000_get_ethtool_stats(struct net_device *netdev,
int i;
char *p = NULL;
+ pm_runtime_get_sync(netdev->dev.parent);
+
dev_get_stats(netdev, &net_stats);
+ pm_runtime_put_sync(netdev->dev.parent);
+
for (i = 0; i < E1000_GLOBAL_STATS_LEN; i++) {
switch (e1000_gstrings_stats[i].type) {
case NETDEV_STATS:
@@ -2108,7 +2146,9 @@ static int e1000_get_rxnfc(struct net_device *netdev,
struct e1000_hw *hw = &adapter->hw;
u32 mrqc;
+ pm_runtime_get_sync(netdev->dev.parent);
mrqc = er32(MRQC);
+ pm_runtime_put_sync(netdev->dev.parent);
if (!(mrqc & E1000_MRQC_RSS_FIELD_MASK))
return 0;
@@ -2171,9 +2211,13 @@ static int e1000e_get_eee(struct net_device *netdev, struct ethtool_keee *edata)
return -EOPNOTSUPP;
}
+ pm_runtime_get_sync(netdev->dev.parent);
+
ret_val = hw->phy.ops.acquire(hw);
- if (ret_val)
+ if (ret_val) {
+ pm_runtime_put_sync(netdev->dev.parent);
return -EBUSY;
+ }
/* EEE Capability */
ret_val = e1000_read_emi_reg_locked(hw, cap_addr, &phy_data);
@@ -2213,6 +2257,8 @@ static int e1000e_get_eee(struct net_device *netdev, struct ethtool_keee *edata)
if (ret_val)
ret_val = -ENODATA;
+ pm_runtime_put_sync(netdev->dev.parent);
+
return ret_val;
}
@@ -2253,12 +2299,16 @@ static int e1000e_set_eee(struct net_device *netdev, struct ethtool_keee *edata)
hw->dev_spec.ich8lan.eee_disable = !edata->eee_enabled;
+ pm_runtime_get_sync(netdev->dev.parent);
+
/* reset the link */
if (netif_running(netdev))
e1000e_reinit_locked(adapter);
else
e1000e_reset(adapter);
+ pm_runtime_put_sync(netdev->dev.parent);
+
return 0;
}
