u32 swqe_size = 0, rwqe_size = 0, ib_qp_num;
unsigned long flags;
- if (init_attr->create_flags)
+ if (!atomic_add_unless(&shca->num_qps, 1, ehca_max_qp)) {
+ ehca_err(pd->device, "Unable to create QP, max number of %i "
+ "QPs reached.", ehca_max_qp);
+ ehca_err(pd->device, "To increase the maximum number of QPs "
+ "use the number_of_qps module parameter.\n");
+ return ERR_PTR(-ENOSPC);
+ }
+
+ if (init_attr->create_flags) {
+ atomic_dec(&shca->num_qps);
return ERR_PTR(-EINVAL);
+ }
memset(&parms, 0, sizeof(parms));
qp_type = init_attr->qp_type;
init_attr->sq_sig_type != IB_SIGNAL_ALL_WR) {
ehca_err(pd->device, "init_attr->sg_sig_type=%x not allowed",
init_attr->sq_sig_type);
+ atomic_dec(&shca->num_qps);
return ERR_PTR(-EINVAL);
}
if (is_llqp && has_srq) {
ehca_err(pd->device, "LLQPs can't have an SRQ");
+ atomic_dec(&shca->num_qps);
return ERR_PTR(-EINVAL);
}
ehca_err(pd->device, "no more than three SGEs "
"supported for SRQ pd=%p max_sge=%x",
pd, init_attr->cap.max_recv_sge);
+ atomic_dec(&shca->num_qps);
return ERR_PTR(-EINVAL);
}
}
qp_type != IB_QPT_SMI &&
qp_type != IB_QPT_GSI) {
ehca_err(pd->device, "wrong QP Type=%x", qp_type);
+ atomic_dec(&shca->num_qps);
return ERR_PTR(-EINVAL);
}
"or max_rq_wr=%x for RC LLQP",
init_attr->cap.max_send_wr,
init_attr->cap.max_recv_wr);
+ atomic_dec(&shca->num_qps);
return ERR_PTR(-EINVAL);
}
break;
if (!EHCA_BMASK_GET(HCA_CAP_UD_LL_QP, shca->hca_cap)) {
ehca_err(pd->device, "UD LLQP not supported "
"by this adapter");
+ atomic_dec(&shca->num_qps);
return ERR_PTR(-ENOSYS);
}
if (!(init_attr->cap.max_send_sge <= 5
"or max_recv_sge=%x for UD LLQP",
init_attr->cap.max_send_sge,
init_attr->cap.max_recv_sge);
+ atomic_dec(&shca->num_qps);
return ERR_PTR(-EINVAL);
} else if (init_attr->cap.max_send_wr > 255) {
ehca_err(pd->device,
"Invalid Number of "
"max_send_wr=%x for UD QP_TYPE=%x",
init_attr->cap.max_send_wr, qp_type);
+ atomic_dec(&shca->num_qps);
return ERR_PTR(-EINVAL);
}
break;
default:
ehca_err(pd->device, "unsupported LL QP Type=%x",
qp_type);
+ atomic_dec(&shca->num_qps);
return ERR_PTR(-EINVAL);
- break;
}
} else {
int max_sge = (qp_type == IB_QPT_UD || qp_type == IB_QPT_SMI
"send_sge=%x recv_sge=%x max_sge=%x",
init_attr->cap.max_send_sge,
init_attr->cap.max_recv_sge, max_sge);
+ atomic_dec(&shca->num_qps);
return ERR_PTR(-EINVAL);
}
}
my_qp = kmem_cache_zalloc(qp_cache, GFP_KERNEL);
if (!my_qp) {
ehca_err(pd->device, "pd=%p not enough memory to alloc qp", pd);
+ atomic_dec(&shca->num_qps);
return ERR_PTR(-ENOMEM);
}
create_qp_exit0:
kmem_cache_free(qp_cache, my_qp);
+ atomic_dec(&shca->num_qps);
return ERR_PTR(ret);
}
if (HAS_SQ(my_qp))
ipz_queue_dtor(my_pd, &my_qp->ipz_squeue);
kmem_cache_free(qp_cache, my_qp);
+ atomic_dec(&shca->num_qps);
return 0;
}