[openib-general] A Couple of verbs/mthca/firmware questions
Michael S. Tsirkin
mst at mellanox.co.il
Tue Dec 14 22:09:20 PST 2004
Hello!
Here's the answer from our firmware developers:
Quoting r. Hal Rosenstock (hnrose at earthlink.net) "[openib-general] A Couple of verbs/mthca/firmware questions":
> Hi,
>
> I have a couple of questions relative to verbs/mthca/firmware:
>
> 1. On received packets, the LRH is not visible but there are some WC
> fields set. One of those fields is dlid_path_bits. dlid_path_bits seems
> to be the same regardless of whether the incoming DR SMP was sent to the
> actual DLID or the permissive DLID. Is there a way to distinguish these
> cases ?
>
1. dlid_path_bits are the 0-7 LSB from the DLID in LRH. permissive LID
is not distinguished.
> 2. If a status is set in the MAD header and a post_send is issued on
> that MAD, should that status be sent in the packet ? Is there any
> conversion of the status field which might occur ?
2. no conversion and no modification is done to the MAD.
MST
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