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IB/rdmavt: Add post send and recv stubs

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This adds the post sned and recv function stubs.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Dennis Dalessandro 2016-01-06 10:01:17 -08:00 committed by Doug Ledford
parent cf16335a0c
commit 8cf4020b2a
3 changed files with 71 additions and 1 deletions
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62
drivers/infiniband/sw/rdmavt/qp.c
View File

@ -118,3 +118,65 @@ int rvt_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
{
return -EOPNOTSUPP;
}
/**
* rvt_post_receive - post a receive on a QP
* @ibqp: the QP to post the receive on
* @wr: the WR to post
* @bad_wr: the first bad WR is put here
*
* This may be called from interrupt context.
*/
int rvt_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
struct ib_recv_wr **bad_wr)
{
/*
* When a packet arrives the driver needs to call up to rvt to process
* the packet. The UD, RC, UC processing will be done in rvt, however
* the driver should be able to override this if it so choses. Perhaps a
* set of function pointers set up at registration time.
*/
return -EOPNOTSUPP;
}
/**
* rvt_post_send - post a send on a QP
* @ibqp: the QP to post the send on
* @wr: the list of work requests to post
* @bad_wr: the first bad WR is put here
*
* This may be called from interrupt context.
*/
int rvt_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
struct ib_send_wr **bad_wr)
{
/*
* VT-DRIVER-API: do_send()
* Driver needs to have a do_send() call which is a single entry point
* to take an already formed packet and throw it out on the wire. Once
* the packet is sent the driver needs to make an upcall to rvt so the
* completion queue can be notified and/or any other outstanding
* work/book keeping can be finished.
*
* Note that there should also be a way for rvt to protect itself
* against hangs in the driver layer. If a send doesn't actually
* complete in a timely manor rvt needs to return an error event.
*/
return -EOPNOTSUPP;
}
/**
* rvt_post_srq_receive - post a receive on a shared receive queue
* @ibsrq: the SRQ to post the receive on
* @wr: the list of work requests to post
* @bad_wr: A pointer to the first WR to cause a problem is put here
*
* This may be called from interrupt context.
*/
int rvt_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
struct ib_recv_wr **bad_wr)
{
return -EOPNOTSUPP;
}

7
drivers/infiniband/sw/rdmavt/qp.h
View File

@ -63,5 +63,10 @@ int rvt_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
int rvt_destroy_qp(struct ib_qp *ibqp);
int rvt_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
int attr_mask, struct ib_qp_init_attr *init_attr);
int rvt_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
struct ib_recv_wr **bad_wr);
int rvt_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
struct ib_send_wr **bad_wr);
int rvt_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
struct ib_recv_wr **bad_wr);
#endif /* DEF_RVTQP_H */

3
drivers/infiniband/sw/rdmavt/vt.c
View File

@ -232,6 +232,9 @@ int rvt_register_device(struct rvt_dev_info *rdi)
CHECK_DRIVER_OVERRIDE(rdi, modify_qp);
CHECK_DRIVER_OVERRIDE(rdi, destroy_qp);
CHECK_DRIVER_OVERRIDE(rdi, query_qp);
CHECK_DRIVER_OVERRIDE(rdi, post_send);
CHECK_DRIVER_OVERRIDE(rdi, post_recv);
CHECK_DRIVER_OVERRIDE(rdi, post_srq_recv);
/* Address Handle */
CHECK_DRIVER_OVERRIDE(rdi, create_ah);