e1000: tune our dynamic itr transmit packet accounting

The driver was still mis-calculating the number of bytes sent during
transmit, now the driver computes what appears to be exactly 100%
correct byte counts (not including CRC) when figuring out how many
bytes and frames were sent during the current transmit packet.
This commit is contained in:
Jesse Brandeburg 2007-01-18 09:25:31 -08:00 • committed by Jeff Garzik
commit 7753b171c4