Use Aq and Pq for brackets.

In D53910#1252298, @carlavilla wrote:

Give me a couple of days to review it

NFC = "No functional change" in this context.

Your use of angle macro instead of less-than/greater-than is correct. mandoc renders Aq/Ao/Ac to UTF-8 as Mathematical Angle Brackets (U+27E8 and U+27E9), and the default FreeBSD console font for higher resolution displays is missing this character. I reported these upstream to the fonts author.

As long as the existing test suites pass, I'm happy.

Closed by commit https://reviews.freebsd.org/rG8ef8c6abfadfc9eb0465ce57c6b09ca310415bdd

This is not correct. First, the TCP_MAXSEG set with setsockopt(2) should match TCP_MAXSEG later retrieved with getsockopt(2). It refers to configured MSS. Second, tcp_maxseg() determines current possible MSS to be used with cwnd calculations. The result of tcp_maxseg() maybe different depending on current state of SACK. Randall later added tcp_fixed_maxseg() that ignores SACK. I'd leave other congestions experts to judge which one is correct for cwnd calculations. But neither tcp_fixed_maxseg() will work correctly here, as would break setsockopt/getsockopt result.

That syntax doesn't work for me on FreeBSD console, and I know others too, so I took it for granted. I'll dig in a bit when I get back to my desk. Just to give some idea on the range of moving parts:

In D54573#1255018, @pouria wrote:

@glebius Can I commit it with a 1-week MFC?