summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorQiming Yang <qiming.yang@intel.com>2017-05-05 13:16:30 +0800
committerThomas Monjalon <thomas@monjalon.net>2017-05-07 22:31:29 +0200
commit412c8c074fd33e8ec8bfbf6c4b4b6c6f84a4b54f (patch)
tree3b7335b34a89a35dd68d6026b5d43afdebfcea74
parent8a441eb99462ea1ba2876b4a0a985e079f3263c5 (diff)
downloaddpdk-412c8c074fd33e8ec8bfbf6c4b4b6c6f84a4b54f.zip
dpdk-412c8c074fd33e8ec8bfbf6c4b4b6c6f84a4b54f.tar.gz
dpdk-412c8c074fd33e8ec8bfbf6c4b4b6c6f84a4b54f.tar.xz
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>
-rw-r--r--doc/guides/rel_notes/known_issues.rst21
1 files changed, 21 insertions, 0 deletions
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.