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e1000: omit stats for broken counter in 82543 

The 82543 chip does not count tx_carrier_errors properly in FD mode;
report zeros instead of garbage.

Originally from Jesse Brandeburg <jesse.brandeburg@intel.com>, rewritten
to use feature flags by me.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Jeff Garzik 2006-12-15 10:41:15 -05:00
parent bd2371ebcc
commit 167fb28416
3 changed files with 12 additions and 0 deletions
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6
drivers/net/e1000/e1000_hw.c
View File

@ -442,6 +442,12 @@ e1000_set_mac_type(struct e1000_hw *hw)
break;
}
/* The 82543 chip does not count tx_carrier_errors properly in
* FD mode
*/
if (hw->mac_type == e1000_82543)
hw->bad_tx_carr_stats_fd = TRUE;
return E1000_SUCCESS;
}

1
drivers/net/e1000/e1000_hw.h
View File

@ -1460,6 +1460,7 @@ struct e1000_hw {
boolean_t mng_reg_access_disabled;
boolean_t leave_av_bit_off;
boolean_t kmrn_lock_loss_workaround_disabled;
boolean_t bad_tx_carr_stats_fd;
};

5
drivers/net/e1000/e1000_main.c
View File

@ -3581,6 +3581,11 @@ e1000_update_stats(struct e1000_adapter *adapter)
adapter->net_stats.tx_aborted_errors = adapter->stats.ecol;
adapter->net_stats.tx_window_errors = adapter->stats.latecol;
adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs;
if (adapter->hw.bad_tx_carr_stats_fd &&
adapter->link_duplex == FULL_DUPLEX) {
adapter->net_stats.tx_carrier_errors = 0;
adapter->stats.tncrs = 0;
}
/* Tx Dropped needs to be maintained elsewhere */