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iavf: Fix refreshing iavf adapter stats on ethtool request

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Currently iavf adapter statistics are refreshed only in a
watchdog task, triggered approximately every two seconds,
which causes some ethtool requests to return outdated values.

Add explicit statistics refresh when requested by ethtool -S.

Fixes: b476b0030e ("iavf: Move commands processing to the separate function")
Signed-off-by: Jan Sokolowski <jan.sokolowski@intel.com>
Signed-off-by: Jedrzej Jagielski <jedrzej.jagielski@intel.com>
Tested-by: Konrad Jankowski <konrad0.jankowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
This commit is contained in:
Jedrzej Jagielski 2021-09-15 09:01:00 +00:00 • committed by Tony Nguyen
parent 0cc318d2e8
commit 3b5bdd18eb
4 changed files with 25 additions and 0 deletions
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2
drivers/net/ethernet/intel/iavf/iavf.h
View file

@ -305,6 +305,7 @@ struct iavf_adapter {
#define IAVF_FLAG_AQ_DEL_FDIR_FILTER BIT(26)
#define IAVF_FLAG_AQ_ADD_ADV_RSS_CFG BIT(27)
#define IAVF_FLAG_AQ_DEL_ADV_RSS_CFG BIT(28)
#define IAVF_FLAG_AQ_REQUEST_STATS BIT(29)
/* OS defined structs */
struct net_device *netdev;
@ -444,6 +445,7 @@ int iavf_up(struct iavf_adapter *adapter);
void iavf_down(struct iavf_adapter *adapter);
int iavf_process_config(struct iavf_adapter *adapter);
void iavf_schedule_reset(struct iavf_adapter *adapter);
void iavf_schedule_request_stats(struct iavf_adapter *adapter);
void iavf_reset(struct iavf_adapter *adapter);
void iavf_set_ethtool_ops(struct net_device *netdev);
void iavf_update_stats(struct iavf_adapter *adapter);

3
drivers/net/ethernet/intel/iavf/iavf_ethtool.c
View file

@ -354,6 +354,9 @@ static void iavf_get_ethtool_stats(struct net_device *netdev,
struct iavf_adapter *adapter = netdev_priv(netdev);
unsigned int i;
/* Explicitly request stats refresh */
iavf_schedule_request_stats(adapter);
iavf_add_ethtool_stats(&data, adapter, iavf_gstrings_stats);
rcu_read_lock();

18
drivers/net/ethernet/intel/iavf/iavf_main.c
View file

@ -174,6 +174,19 @@ void iavf_schedule_reset(struct iavf_adapter *adapter)
}
}
/**
* iavf_schedule_request_stats - Set the flags and schedule statistics request
* @adapter: board private structure
*
* Sets IAVF_FLAG_AQ_REQUEST_STATS flag so iavf_watchdog_task() will explicitly
* request and refresh ethtool stats
**/
void iavf_schedule_request_stats(struct iavf_adapter *adapter)
{
adapter->aq_required |= IAVF_FLAG_AQ_REQUEST_STATS;
mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0);
}
/**
* iavf_tx_timeout - Respond to a Tx Hang
* @netdev: network interface device structure
@ -1709,6 +1722,11 @@ static int iavf_process_aq_command(struct iavf_adapter *adapter)
iavf_del_adv_rss_cfg(adapter);
return 0;
}
if (adapter->aq_required & IAVF_FLAG_AQ_REQUEST_STATS) {
iavf_request_stats(adapter);
return 0;
}
return -EAGAIN;
}

2
drivers/net/ethernet/intel/iavf/iavf_virtchnl.c
View file

@ -784,6 +784,8 @@ void iavf_request_stats(struct iavf_adapter *adapter)
/* no error message, this isn't crucial */
return;
}
adapter->aq_required &= ~IAVF_FLAG_AQ_REQUEST_STATS;
adapter->current_op = VIRTCHNL_OP_GET_STATS;
vqs.vsi_id = adapter->vsi_res->vsi_id;
/* queue maps are ignored for this message - only the vsi is used */