tests/kern/ssl_sendfile: fix 'random' and 'basic' flakyness

The read of c.sbytes needs to be synchronized with mutex. The problem was
fixed for 'truncate' and 'grow' with 8a9508563542, but these tw

tests/kern/ssl_sendfile: fix 'random' and 'basic' flakyness

The read of c.sbytes needs to be synchronized with mutex. The problem was
fixed for 'truncate' and 'grow' with 8a9508563542, but these two suffer
from the same problem. Provide require_sbytes(), a locked wrapper around
ATF_REQUIRE() to reduce copy and paste.

Submitted by: olivier
Differential Revision: https://reviews.freebsd.org/D55781

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tests/kern/ssl_sendfile: reduce copy & paste

Provide sendme_locked_wait() for a common pattern. Not functional change.

tests/kern: make ssl_sendfile:truncate and ssl_sendfile:grow less flaky

First problem is a trivial race that the client thread doesn't see updated
c.sbytes. Second problem applies only to the trunc

tests/kern: make ssl_sendfile:truncate and ssl_sendfile:grow less flaky

First problem is a trivial race that the client thread doesn't see updated
c.sbytes. Second problem applies only to the truncate test. On a machine
with huge default buffer sizes, there is a chance that sendfile(2) will
fill both buffers with amount of data that is larger than the size we plan
to truncate. To minimise chances for this scenario, increase file size
and truncate it less aggressively, also try to decrease buffer sizes.

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tests/kern: add test for SSL_sendfile()

tests/kern: make ssl_sendfile:truncate and ssl_sendfile:grow less flaky

First problem is a trivial race that the client thread doesn't see updated
c.sbytes. Second problem applies only to the trunc

tests/kern: make ssl_sendfile:truncate and ssl_sendfile:grow less flaky

First problem is a trivial race that the client thread doesn't see updated
c.sbytes. Second problem applies only to the truncate test. On a machine
with huge default buffer sizes, there is a chance that sendfile(2) will
fill both buffers with amount of data that is larger than the size we plan
to truncate. To minimise chances for this scenario, increase file size
and truncate it less aggressively, also try to decrease buffer sizes.

show more ...

tests/kern: add test for SSL_sendfile()

tests/kern: add test for SSL_sendfile()