On Tue, 2004-11-09 at 14:56, Sean Hefty wrote:
> Sean Hefty wrote:
>
> > I have two nodes directly connected. When trying to bring up the openib
> > node, I receive a local length error on the CQ after trying to perform a
> > send.
> >
> > I'm continuing to debug...
>
> static int agent_mad_send(struct ib_mad_agent *mad_agent,
> struct ib_agent_port_private *port_priv,
> struct ib_mad_private *mad,
> struct ib_grh *grh,
> struct ib_wc *wc)
> {
> ...
> /* PCI mapping */
> gather_list.addr = pci_map_single(mad_agent->device->dma_device,
> &mad->grh,
> sizeof *mad -
> sizeof mad->header,
> PCI_DMA_TODEVICE);
> gather_list.length = sizeof *mad - sizeof mad->header;
> gather_list.lkey = (*port_priv->mr).lkey;
>
>
> Wouldn't this result in sending the GRH data buffer before the MAD
> buffer? Does mthca check the size of sends that are posted to QP0/1 and
> report an error if they are larger than 256 bytes?
Doesn't that just map starting at the GRH ? This is to handle PMA
responses which might have GRHs.
-- Hal
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