https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=228556
Bug ID: 228556
Summary: igb link status is not updating properly when
configured as VF driver in guest OS
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: b...@freebsd.org
Reporter: gokulj...@gmail.com
Created attachment 193773
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=193773&action=edit
patch file to fix igb vf driver link issue
When we use igb driver as Virtual function driver , link status is not updating
once after link is up. Because of the same , if physical link went down , the
status will not be updated at freebsd VF interface if its present state is link
UP.
Following patch should resolve the issue .
gokulcg@/$ cat igb_link.patch
Index: sys/dev/e1000/e1000_vf.c
===================================================================
--- sys/dev/e1000/e1000_vf.c (revision 334275)
+++ sys/dev/e1000/e1000_vf.c (working copy)
@@ -546,10 +546,11 @@
* or a virtual function reset
*/
- /* If we were hit with a reset or timeout drop the link */
- if (!mbx->ops.check_for_rst(hw, 0) || !mbx->timeout)
+ /* If we were hit with a reset or timeout or physical link is down drop
the link */
+ if (!mbx->ops.check_for_rst(hw, 0) || !mbx->timeout || \
+ !(E1000_READ_REG(hw, E1000_STATUS) & E1000_STATUS_LU)) {
mac->get_link_status = TRUE;
-
+ }
if (!mac->get_link_status)
goto out;
--
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