vtnet: Avoid ifdefs based on __NO_STRICT_ALIGNMENT

[imp]

Summary

Some platforms require an adjustment of the ethernet hearders. Rather
than make this be on __NO_STRICT_ALIGNMENT being defined, define
VTNET_ETHER_ALIGN to be either 0 or ETHER_ALIGN (aka 2). Add a test to
the if statements to only do them when != 0. This eliminates the #ifdef
sprinkled in the code, still communicates the intent and gives the same
compiled results.

Sponsored by: Netflix

[bz]

sys/dev/virtio/network/if_vtnet.c

95

s/2/ETHER_ALIGN/ to understand the magic number

[imp]

sys/dev/virtio/network/if_vtnet.c

95

Right. I'd meant to do that and has a braino

[imp]

update to use ETHER_ALIGN