From: Ira Weiny <ira.weiny@xxxxxxxxx>
Low level drivers need to be able to check incoming attributes as well as be
able to adjust their private data on queue pair modification. Add 2 driver
callbacks, check_modify_qp and modify_qp, to facilitate this.
Signed-off-by: Ira Weiny <ira.weiny@xxxxxxxxx>
---
drivers/infiniband/sw/rdmavt/qp.c | 7 +++++++
include/rdma/rdma_vt.h | 7 +++++++
2 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/drivers/infiniband/sw/rdmavt/qp.c b/drivers/infiniband/sw/rdmavt/qp.c
index 64b9c01..615358e 100644
--- a/drivers/infiniband/sw/rdmavt/qp.c
+++ b/drivers/infiniband/sw/rdmavt/qp.c
@@ -970,6 +970,10 @@ int rvt_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
attr_mask, link))
goto inval;
+ if (rdi->driver_f.check_modify_qp &&
+ rdi->driver_f.check_modify_qp(qp, attr, attr_mask, udata))
+ goto inval;
+
if (attr_mask & IB_QP_AV) {
if (attr->ah_attr.dlid >= be16_to_cpu(IB_MULTICAST_LID_BASE))
goto inval;
@@ -1166,6 +1170,9 @@ int rvt_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC)
qp->s_max_rd_atomic = attr->max_rd_atomic;
+ if (rdi->driver_f.modify_qp)
+ rdi->driver_f.modify_qp(qp, attr, attr_mask, udata);
+
spin_unlock(&qp->s_lock);
spin_unlock_irq(&qp->r_lock);
diff --git a/include/rdma/rdma_vt.h b/include/rdma/rdma_vt.h
index 04e9019..e382cca 100644
--- a/include/rdma/rdma_vt.h
+++ b/include/rdma/rdma_vt.h
@@ -256,6 +256,13 @@ struct rvt_driver_provided {
struct rvt_ah *);
int (*alloc_qpn)(struct rvt_dev_info *rdi, struct rvt_qpn_table *qpt,
enum ib_qp_type type, u8 port, gfp_t gfp);
+ /**
+ * Return 0 if modification is valid, -errno otherwise
+ */
+ int (*check_modify_qp)(struct rvt_qp *qp, struct ib_qp_attr *attr,
+ int attr_mask, struct ib_udata *udata);
+ void (*modify_qp)(struct rvt_qp *qp, struct ib_qp_attr *attr,
+ int attr_mask, struct ib_udata *udata);
};
struct rvt_dev_info {
--
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