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IB/rdmavt: add modify queue pair driver helpers

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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@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Ira Weiny 2016-01-22 13:04:38 -08:00 committed by Doug Ledford
parent 2b047ea7a3
commit e85ec33d82
2 changed files with 14 additions and 0 deletions
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7
drivers/infiniband/sw/rdmavt/qp.c
View file

@ -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);

7
include/rdma/rdma_vt.h
View file

@ -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 {