[ofa-general] [PATCH] ipoib: refresh path when remote lid changes

[Moni Shoua]

Jason Gunthorpe wrote:
> On Mon, Jul 27, 2009 at 08:11:42PM +0300, Yossi Etigin wrote:
>>   If the LID of an ipoib neighbour changes without a SM event on the local node,
>> IPoIB will keep caching the invalid path until the device is flushed. The patch
>> below will remove the path for every incoming ARP packet where the sender hardware
>> address does not match the cached lid.
> 
> This assumes a LMC=0 fabric.. Otherwise there is no guarentee that the
> slid the sender uses is the same one you are using to send.
> 
> Jason
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This issue can be solved by a little bit different check
instead of 
		be16_to_cpu(path->pathrec.dlid) == lid)
do
		is_in_same_lid_group(be16_to_cpu(path->pathrec.dlid), lid, lmc)

what do you think?