em(4) update for 6-STABLE

[Gleb Smirnoff]

  Colleagues,

  here is a patch that merges HEAD em(4) driver to RELENG_6.

First, it significantly improves perfromance of the driver
under high pps load.
Second, it adds support for few new chips.

You need to update your system to fresh RELENG_6. The driver
will not compile on 6.1-RELEASE.

Then you need to run the following sequence:

cd /usr/src/sys/dev/em
fetch http://people.freebsd.org/~glebius/em-6.0.5.RELENG_6.patch.gz
gunzip em-6.0.5.RELENG_6.patch.gz
patch < em-6.0.5.RELENG_6.patch

and then rebuild your kernel and reboot.

-- 
Totus tuus, Glebius.
GLEBIUS-RIPN GLEB-RIPE