bb4a7d94b9
Introduce convenience macros to retrieve the DSCP, ECN or traffic class bits from an IPv6 header. Use them where appropriate. Reviewed by: ae (previous version), rscheff, tuexen, rgrimes MFC after: 2 weeks Sponsored by: Rubicon Communications, LLC ("Netgate") Differential Revision: https://reviews.freebsd.org/D29056