On Thu, 2004-11-04 at 12:44, Krishna Kumar wrote:
On Thu, 4 Nov 2004, Roland Dreier wrote:
Not sure what the goal is here, but I should point out that current
mthca code does not implement resizing either CQs or QPs.
Yes, I agree on that. Infact the verbs layer will return ENOSYS for
Hal Is this a driver or firmware issue ?
Driver issue. I just haven't implemented CQ resize yet, and it's not
a high priority for me.
Hal Might this be useful for redirected QPs ?
I don't think so, since the redirected QP will not be attached to the
MAD layer's CQ.
Hal Should the
Hal Rosenstock wrote:
However I'm not sure I understand why the MAD layer wants to resize
these objects -- given that the number of QPs is known in advance and
that the MAD layer can choose how many work requests to post per QP,
I'm not sure what is gained by trying to resize things dynamically.
Hal Does the driver do this (QP is sized larger than what was
Hal requested) now ? Or is this a spec thing ?
Unless my memory is playing tricks on me, I don't think mthca will
create a QP larger than requested.
- R.
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From: Sean Hefty [mailto:[EMAIL PROTECTED]
Sent: Friday, November 05, 2004 11:21 AM
Hal Rosenstock wrote:
However I'm not sure I understand why the MAD layer wants to resize
these objects -- given that the number of QPs is known in advance and
that the MAD layer can choose how many work
Hi Hal,
I think others have answered it, but my 2 cents :
1. Current driver doesn't do this, it is a spec thing, a potential driver
could do this in future. It is useful in the sense that the CQ is
always atleast the size of the QP's that are using it in case the
driver implements it,
Michael If the max. number of QPs is very big, you may want the
Michael actual CQ size to grow gradually with demand.
sure but there are only 2 soecial qps per port.
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Krishna Kumar wrote:
qp_info-qp = ib_create_qp(port_priv-pd, qp_init_attr);
- if (IS_ERR(qp_info-qp)) {
- printk(KERN_ERR PFX Couldn't create ib_mad QP%d\n,
- get_spl_qp_index(qp_type));
+ if (!IS_ERR(qp_info-qp)) {
+ struct
Not sure what the goal is here, but I should point out that current
mthca code does not implement resizing either CQs or QPs.
However I'm not sure I understand why the MAD layer wants to resize
these objects -- given that the number of QPs is known in advance and
that the MAD layer can choose how
