[nfv.config] Add real-scale integration tests for `snabbnfv-traffic'
based on `bench_env'.
[lib.nfv] selftest.sh: Added rudimentary filter test.
[lib.nfv] selftest.sh: Disable test cases known to fail.
add test for local-only switch features
receive buffer size configurable.  ignores given freelist if any buffer is too small
couple silly typos
don't pretest buffers, if anyone doesn't measure up, replace with a freshly allocated one
adapt buffer size to those offered.  free unusable buffers
remove rx_buffsize API
Merge pull request #280 from eugeneia/lib_nfv-selftest

[nfv.config] Add real-scale integration tests for `snabbnfv-traffic'
Merge pull request #275 from javierguerragiraldez/offload

Intel10G: transmit/receive checksum offload
Merge pull request #274 from javierguerragiraldez/intel_fixups

Intel10g: rx_buffsize config and check
Revert "Merge pull request #275 from javierguerragiraldez/offload"

This reverts commit 5f783326e5a10e6a6e69a725bbaa95392ef56d8b, reversing
changes made to c2b2ca47c9b4903b3fcdc4814c115f539d36e3eb.
Merge pull request #284 from virtualopensystems/revert_offloading

Revert "Merge pull request #275 from javierguerragiraldez/offload"

TX checksum offload feature was merged prematurely
receive checksum offload
transmit checksum offload
the "insert checksum" bits of TXDESC must reflect the current context
precalculate the offload flags together with the context descriptor
check if the packet needs checksum before asking the chip to do it