jhb 3df465f54f Export tcp_always_keepalive for use by the Chelsio TOM module.
This used to work by accident with ld.bfd even though always_keepalive
was marked as static. LLD honors static more correctly, so export this
variable properly (including moving it into the tcp_* namespace).

Reviewed by:	bz, emaste
MFC after:	2 weeks
Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D14129
2018-01-30 23:01:37 +00:00
..
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