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[IB] uverbs: have kernel return QP capabilities

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Move the computation of QP capabilities (max scatter/gather entries,
max inline data, etc) into the kernel, and have the uverbs module
return the values as part of the create QP response.  This keeps
precise knowledge of device limits in the low-level kernel driver.

This requires an ABI bump, so while we're making changes, get rid of
the max_sge parameter for the modify SRQ command -- it's not used and
shouldn't be there.

Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il>
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Jack Morgenstein
2005-11-09 11:26:07 -08:00
committed by Roland Dreier
parent ec914c52d6
commit 77369ed31d
8 changed files with 98 additions and 16 deletions
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2
drivers/infiniband/hw/mthca/mthca_provider.c
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@@ -616,11 +616,11 @@ static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
return ERR_PTR(err);
}
init_attr->cap.max_inline_data = 0;
init_attr->cap.max_send_wr = qp->sq.max;
init_attr->cap.max_recv_wr = qp->rq.max;
init_attr->cap.max_send_sge = qp->sq.max_gs;
init_attr->cap.max_recv_sge = qp->rq.max_gs;
init_attr->cap.max_inline_data = qp->max_inline_data;
return &qp->ibqp;
}