Tweak the stats exported by the e1000 drivers:

- Add a single sysctl procedure to all three drivers to read an arbitrary
  register (the register is passed as arg2).  Use it to replace existing
  routines in igb(4) that used a separate routine for each register, and
  to add support for missing stats in em(4) and lem(4).
- Move the 'rx_overruns' and 'watchdog_timeouts' stats out of the MAC stats
  section as they are driver stats, not MAC counters.
- Simplify the code that creates per-queue stats in igb(4) to use a single
  loop and remove duplicated code.
- Properly read all 64 bits of the 'good octets received/transmitted' in
  em(4) and lem(4).
- Actually read the interrupt count registers in em(4), and drop the
  'host to card' sysctl stats from em(4) as they are not implemented in
  any of the hardware this driver supports.
- Restore several stats to em(4) that were lost in the earlier stats
  conversion including per-queue stats.
- Export several MAC stats in em(4) that were exported in igb(4) but not
  in em(4).
- Export stats in lem(4) using individual sysctls as in em(4) and igb(4).

Reviewed by:	jfv
MFC after:	1 week

1 files changed, 0 insertions, 3 deletions

diff --git a/sys/dev/e1000/if_lem.h b/sys/dev/e1000/if_lem.h
index 0ada7df..2f76aa8 100644
--- a/sys/dev/e1000/if_lem.h
+++ b/sys/dev/e1000/if_lem.h
@@ -407,9 +407,6 @@ struct adapter {
         unsigned long	no_tx_dma_setup;
 	unsigned long	watchdog_events;
 	unsigned long	rx_overruns;
-	unsigned long	rx_irq;
-	unsigned long	tx_irq;
-	unsigned long	link_irq;
 
 	/* 82547 workaround */
 	uint32_t	tx_fifo_size;