static int rxe_detach_mcast(struct ib_qp *ibqp, union ib_gid *mgid, u16 mlid)
{
struct rxe_dev *rxe = to_rdev(ibqp->device);
struct rxe_qp *qp = to_rqp(ibqp);
return rxe_mcast_drop_grp_elem(rxe, qp, mgid);
}
static int rxe_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
struct ib_send_wr **bad_wr)
{
int err = 0;
struct rxe_qp *qp = to_rqp(ibqp);
unsigned int mask;
unsigned int length = 0;
int i;
int must_sched;
if (unlikely(!qp->valid)) {
*bad_wr = wr;
return -EINVAL;
}
if (unlikely(qp->req.state < QP_STATE_READY)) {
*bad_wr = wr;
return -EINVAL;
}
while (wr) {
mask = wr_opcode_mask(wr->opcode, qp);
if (unlikely(!mask)) {
err = -EINVAL;
*bad_wr = wr;
break;
}
if (unlikely((wr->send_flags & IB_SEND_INLINE) &&
!(mask & WR_INLINE_MASK))) {
err = -EINVAL;
*bad_wr = wr;
break;
}
length = 0;
for (i = 0; i < wr->num_sge; i++)
length += wr->sg_list[i].length;
err = post_one_send(qp, wr, mask, length);
if (err) {
*bad_wr = wr;
break;
}
wr = wr->next;
}
/*
* Must sched in case of GSI QP because ib_send_mad() hold irq lock,
* and the requester call ip_local_out_sk() that takes spin_lock_bh.
*/
must_sched = (qp_type(qp) == IB_QPT_GSI) ||
(queue_count(qp->sq.queue) > 1);
rxe_run_task(&qp->req.task, must_sched);
return err;
}
static int rxe_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata)
{
struct rxe_qp *qp = to_rqp(ibqp);
rxe_qp_destroy(qp);
rxe_drop_index(qp);
rxe_drop_ref(qp);
return 0;
}
static int rxe_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
int mask, struct ib_qp_init_attr *init)
{
struct rxe_qp *qp = to_rqp(ibqp);
rxe_qp_to_init(qp, init);
rxe_qp_to_attr(qp, attr, mask);
return 0;
}
static int rxe_attach_mcast(struct ib_qp *ibqp, union ib_gid *mgid, u16 mlid)
{
int err;
struct rxe_dev *rxe = to_rdev(ibqp->device);
struct rxe_qp *qp = to_rqp(ibqp);
struct rxe_mc_grp *grp;
/* takes a ref on grp if successful */
err = rxe_mcast_get_grp(rxe, mgid, &grp);
if (err)
return err;
err = rxe_mcast_add_grp_elem(rxe, qp, grp);
rxe_drop_ref(grp);
return err;
}
static int rxe_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
int mask, struct ib_udata *udata)
{
int err;
struct rxe_dev *rxe = to_rdev(ibqp->device);
struct rxe_qp *qp = to_rqp(ibqp);
err = rxe_qp_chk_attr(rxe, qp, attr, mask);
if (err)
goto err1;
err = rxe_qp_from_attr(qp, attr, mask, udata);
if (err)
goto err1;
return 0;
err1:
return err;
}
static int rxe_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
const struct ib_recv_wr **bad_wr)
{
int err = 0;
struct rxe_qp *qp = to_rqp(ibqp);
struct rxe_rq *rq = &qp->rq;
unsigned long flags;
if (unlikely((qp_state(qp) < IB_QPS_INIT) || !qp->valid)) {
*bad_wr = wr;
err = -EINVAL;
goto err1;
}
if (unlikely(qp->srq)) {
*bad_wr = wr;
err = -EINVAL;
goto err1;
}
spin_lock_irqsave(&rq->producer_lock, flags);
while (wr) {
err = post_one_recv(rq, wr);
if (unlikely(err)) {
*bad_wr = wr;
break;
}
wr = wr->next;
}
spin_unlock_irqrestore(&rq->producer_lock, flags);
if (qp->resp.state == QP_STATE_ERROR)
rxe_run_task(&qp->resp.task, 1);
err1:
return err;
}
static int rxe_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
const struct ib_send_wr **bad_wr)
{
struct rxe_qp *qp = to_rqp(ibqp);
if (unlikely(!qp->valid)) {
*bad_wr = wr;
return -EINVAL;
}
if (unlikely(qp->req.state < QP_STATE_READY)) {
*bad_wr = wr;
return -EINVAL;
}
if (qp->is_user) {
/* Utilize process context to do protocol processing */
rxe_run_task(&qp->req.task, 0);
return 0;
} else
return rxe_post_send_kernel(qp, wr, bad_wr);
}