| 5bdb8b27 | 18-Jan-2021 |
Mark Johnston <markj@FreeBSD.org> |
safexcel: Maintain per-session context records
The context record contains key material precomputed by the driver at
session creation time. Rather than storing various components of the
context rec
safexcel: Maintain per-session context records
The context record contains key material precomputed by the driver at
session creation time. Rather than storing various components of the
context record in each session, go a bit further and store the full
context record image so that safexcel_process() can simply copy the
image into each request submitted to the hardware. This simplifies the
data path and eliminates a bunch of unnecessary conditional logic that
was getting executed for each request.
MFC after: 1 week
Sponsored by: Rubicon Communications, LLC (Netgate)
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| 1a6ffed5 | 18-Jan-2021 |
Mark Johnston <markj@FreeBSD.org> |
safexcel: Simplify request allocation
Rather than preallocating a set of requests and moving them between
queues during state transitions, maintain a shadow of the command
descriptor ring to track t
safexcel: Simplify request allocation
Rather than preallocating a set of requests and moving them between
queues during state transitions, maintain a shadow of the command
descriptor ring to track the driver context of each request. This is
simpler and requires less synchronization between safexcel_process() and
the ring interrupt handler.
MFC after: 1 week
Sponsored by: Rubicon Communications, LLC (Netgate)
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| b7e27af3 | 18-Jan-2021 |
Mark Johnston <markj@FreeBSD.org> |
safexcel: Handle command/result descriptor exhaustion gracefully
Rather than returning a hard error in this case, return ERESTART so that
upper layers get a chance to retry the request (or drop it,
safexcel: Handle command/result descriptor exhaustion gracefully
Rather than returning a hard error in this case, return ERESTART so that
upper layers get a chance to retry the request (or drop it, depending on
the desired policy).
This case is hard to hit due to the somewhat low bound on queued
requests, but that will no longer be true after an upcoming change.
MFC after: 1 week
Sponsored by: Rubicon Communications, LLC (Netgate)
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| 092cf8d6 | 08-Jan-2021 |
Mark Johnston <markj@FreeBSD.org> |
safexcel: Fix a race around unblocking of crypto ops
safexcel_ring_intr() could fail to observed that sc_blocked is set after
completing all outstanding ops for a ring, in which case blocked ops
wou
safexcel: Fix a race around unblocking of crypto ops
safexcel_ring_intr() could fail to observed that sc_blocked is set after
completing all outstanding ops for a ring, in which case blocked ops
would be deferred forever.
Request structures are managed by individual rings, so move the
"blocked" flag into the per-ring state block and use the ring lock to
synchronize with safexcel_process(). Remove sc_mtx since it is now
unused.
MFC after: 3 days
Sponsored by: Rubicon Communications, LLC (Netgate)
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