K 10
svn:author
V 3
mav
K 8
svn:date
V 27
2021-03-15T03:04:30.948010Z
K 7
svn:log
V 295
Optimize TX coalescing by keeping pointer to last mbuf.

Before m_cat() each time traversed through all the coalesced chain.

MFC after:	1 week

(cherry picked from commit b85a67f54a40053e75658a17c620b89bafaba67f)

Git Hash:   3034c0dab755d29eb24d0187cfc00501b660a9c1
Git Author: mav@FreeBSD.org
END