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* [dpdk-dev] [PATCH] doc: add known issue on QAT PMD into release notes
@ 2016-11-10 16:46 Fiona Trahe
  2016-11-10 16:52 ` Mcnamara, John
                   ` (2 more replies)
  0 siblings, 3 replies; 6+ messages in thread
From: Fiona Trahe @ 2016-11-10 16:46 UTC (permalink / raw)
  To: dev; +Cc: pablo.de.lara.guarch, fiona.trahe, john.griffin

Issue is with the digest appended feature on QAT PMD.
A workaround is also documented.

Signed-off-by: Fiona Trahe <fiona.trahe@intel.com>
---
 doc/guides/rel_notes/release_16_11.rst | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/doc/guides/rel_notes/release_16_11.rst b/doc/guides/rel_notes/release_16_11.rst
index 365b5a3..5f925b5 100644
--- a/doc/guides/rel_notes/release_16_11.rst
+++ b/doc/guides/rel_notes/release_16_11.rst
@@ -213,7 +213,18 @@ Known Issues
   Therefore, in order to use L3fwd-power, vector mode should be disabled
   from the config file.
 
-
+* **Digest address must be supplied for crypto auth operation on QAT PMD.**
+
+  The cryptodev API specifies that if the rte_crypto_sym_op.digest.data field,
+  and by inference the digest.phys_addr field which points to the same location,
+  is not set for an auth operation the driver is to understand that the digest
+  result is located immediately following the region over which the digest is
+  computed. The QAT PMD doesn't correctly handle this case and reads and writes
+  to an incorrect location. 
+  
+  Callers can workaround this by always supplying the digest virtual and
+  physical address fields in the rte_crypto_sym_op for an auth operation.
+   
 API Changes
 -----------
 
-- 
2.5.0

^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2016-11-12 21:37 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-11-10 16:46 [dpdk-dev] [PATCH] doc: add known issue on QAT PMD into release notes Fiona Trahe
2016-11-10 16:52 ` Mcnamara, John
2016-11-10 17:22 ` Trahe, Fiona
2016-11-10 17:27 ` [dpdk-dev] [PATCH v2] " Fiona Trahe
2016-11-10 18:13   ` John Griffin
2016-11-12 21:37     ` Thomas Monjalon

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