diff options
| author | Qiming Yang <qiming.yang@intel.com> | 2017-05-05 13:16:30 +0800 |
|---|---|---|
| committer | Thomas Monjalon <thomas@monjalon.net> | 2017-05-07 22:31:29 +0200 |
| commit | 412c8c074fd33e8ec8bfbf6c4b4b6c6f84a4b54f (patch) | |
| tree | 3b7335b34a89a35dd68d6026b5d43afdebfcea74 | |
| parent | 8a441eb99462ea1ba2876b4a0a985e079f3263c5 (diff) | |
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.rst | 21 |
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 37464a002b..3f6d8cb5f4 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. |