Roland Dreier wrote:
We probably still want to handle gather lists for posting sends I
think. Another (rather unrelated) issue that I just noticed the other
day is that something like sending a response to a GetTable request
for PortInfo for every port in a large fabric is going to end up
sending a very large RMPP message, probably too large to fit in a
single kmalloc()ed buffer. So I don't think we should require that
all send requests have a single gather entry.
We can change the ib_mad_send_buf to allow chaining them together.
The single SGE restriction was just a limitation of the initial implementation.
Supporting an arbitrary breaking of a MAD buffer across multiple SGEs is
difficult, but if we can control the SGE sizes, this should be doable. I think
using ib_mad_send_buf in post_send_mad makes supporting this easier.
Does anyone else have any other ideas on how to fix this issue?
- Sean
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