* [dpdk-dev] [PATCH] doc: add known issue about l3fwd-power
@ 2017-05-05 5:16 Qiming Yang
2017-05-05 16:20 ` Mcnamara, John
0 siblings, 1 reply; 3+ messages in thread
From: Qiming Yang @ 2017-05-05 5:16 UTC (permalink / raw)
To: dev; +Cc: pablo.de.lara.guarch, Qiming Yang
Because of UIO only support one interrupt, when insmod
``igb_uio`` and running l3fwd-power APP, link status
getting doesn't work properly.
Signed-off-by: Qiming Yang <qiming.yang@intel.com>
---
doc/guides/rel_notes/known_issues.rst | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/doc/guides/rel_notes/known_issues.rst b/doc/guides/rel_notes/known_issues.rst
index 37464a0..3f6d8cb 100644
--- a/doc/guides/rel_notes/known_issues.rst
+++ b/doc/guides/rel_notes/known_issues.rst
@@ -721,3 +721,24 @@ igb uio legacy mode can not be used in X710/XL710/XXV710
**Driver/Module**:
Poll Mode Driver (PMD).
+
+
+igb_uio can not be used when running l3fwd-power
+------------------------------------------------
+
+**Description**:
+ Link Status Change(LSC) interrupt and packet receiving interrupt are all enabled in l3fwd-power
+ APP. Because of UIO only support one interrupt, so these two kinds of interrupt need to share
+ one, and the receiving interrupt have the higher priority, so can't get the right link status.
+
+**Implication**:
+ When insmod ``igb_uio`` and running l3fwd-power APP, link status getting doesn't work properly.
+
+**Resolution/Workaround**:
+ Use vfio-pci when LSC and packet receiving interrupt enabled.
+
+**Affected Environment/Platform**:
+ ALL.
+
+**Driver/Module**:
+ ``igb_uio`` module.
--
2.7.4
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [dpdk-dev] [PATCH] doc: add known issue about l3fwd-power
2017-05-05 5:16 [dpdk-dev] [PATCH] doc: add known issue about l3fwd-power Qiming Yang
@ 2017-05-05 16:20 ` Mcnamara, John
2017-05-07 20:33 ` Thomas Monjalon
0 siblings, 1 reply; 3+ messages in thread
From: Mcnamara, John @ 2017-05-05 16:20 UTC (permalink / raw)
To: Yang, Qiming, dev; +Cc: De Lara Guarch, Pablo, Yang, Qiming
> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Qiming Yang
> Sent: Friday, May 5, 2017 6:17 AM
> To: dev@dpdk.org
> Cc: De Lara Guarch, Pablo <pablo.de.lara.guarch@intel.com>; Yang, Qiming
> <qiming.yang@intel.com>
> Subject: [dpdk-dev] [PATCH] doc: add known issue about l3fwd-power
>
> Because of UIO only support one interrupt, when insmod ``igb_uio`` and
> running l3fwd-power APP, link status getting doesn't work properly.
>
> Signed-off-by: Qiming Yang <qiming.yang@intel.com>
Acked-by: John McNamara <john.mcnamara@intel.com>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [dpdk-dev] [PATCH] doc: add known issue about l3fwd-power
2017-05-05 16:20 ` Mcnamara, John
@ 2017-05-07 20:33 ` Thomas Monjalon
0 siblings, 0 replies; 3+ messages in thread
From: Thomas Monjalon @ 2017-05-07 20:33 UTC (permalink / raw)
To: Yang, Qiming; +Cc: dev, Mcnamara, John, De Lara Guarch, Pablo
> > Because of UIO only support one interrupt, when insmod ``igb_uio`` and
> > running l3fwd-power APP, link status getting doesn't work properly.
> >
> > Signed-off-by: Qiming Yang <qiming.yang@intel.com>
>
>
> Acked-by: John McNamara <john.mcnamara@intel.com>
Applied, thanks
^ permalink raw reply [flat|nested] 3+ messages in thread
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