return ret;
}
+ssize_t ib_uverbs_poll_cq(struct ib_uverbs_file *file,
+ const char __user *buf, int in_len,
+ int out_len)
+{
+ struct ib_uverbs_poll_cq cmd;
+ struct ib_uverbs_poll_cq_resp *resp;
+ struct ib_cq *cq;
+ struct ib_wc *wc;
+ int ret = 0;
+ int i;
+ int rsize;
+
+ if (copy_from_user(&cmd, buf, sizeof cmd))
+ return -EFAULT;
+
+ wc = kmalloc(cmd.ne * sizeof *wc, GFP_KERNEL);
+ if (!wc)
+ return -ENOMEM;
+
+ rsize = sizeof *resp + cmd.ne * sizeof(struct ib_uverbs_wc);
+ resp = kmalloc(rsize, GFP_KERNEL);
+ if (!resp) {
+ ret = -ENOMEM;
+ goto out_wc;
+ }
+
+ down(&ib_uverbs_idr_mutex);
+ cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle);
+ if (!cq || cq->uobject->context != file->ucontext) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ resp->count = ib_poll_cq(cq, cmd.ne, wc);
+
+ for (i = 0; i < resp->count; i++) {
+ resp->wc[i].wr_id = wc[i].wr_id;
+ resp->wc[i].status = wc[i].status;
+ resp->wc[i].opcode = wc[i].opcode;
+ resp->wc[i].vendor_err = wc[i].vendor_err;
+ resp->wc[i].byte_len = wc[i].byte_len;
+ resp->wc[i].imm_data = wc[i].imm_data;
+ resp->wc[i].qp_num = wc[i].qp_num;
+ resp->wc[i].src_qp = wc[i].src_qp;
+ resp->wc[i].wc_flags = wc[i].wc_flags;
+ resp->wc[i].pkey_index = wc[i].pkey_index;
+ resp->wc[i].slid = wc[i].slid;
+ resp->wc[i].sl = wc[i].sl;
+ resp->wc[i].dlid_path_bits = wc[i].dlid_path_bits;
+ resp->wc[i].port_num = wc[i].port_num;
+ }
+
+ if (copy_to_user((void __user *) (unsigned long) cmd.response, resp, rsize))
+ ret = -EFAULT;
+
+out:
+ up(&ib_uverbs_idr_mutex);
+ kfree(resp);
+
+out_wc:
+ kfree(wc);
+ return ret ? ret : in_len;
+}
+
+ssize_t ib_uverbs_req_notify_cq(struct ib_uverbs_file *file,
+ const char __user *buf, int in_len,
+ int out_len)
+{
+ struct ib_uverbs_req_notify_cq cmd;
+ struct ib_cq *cq;
+ int ret = -EINVAL;
+
+ if (copy_from_user(&cmd, buf, sizeof cmd))
+ return -EFAULT;
+
+ down(&ib_uverbs_idr_mutex);
+ cq = idr_find(&ib_uverbs_cq_idr, cmd.cq_handle);
+ if (cq && cq->uobject->context == file->ucontext) {
+ ib_req_notify_cq(cq, cmd.solicited_only ?
+ IB_CQ_SOLICITED : IB_CQ_NEXT_COMP);
+ ret = in_len;
+ }
+ up(&ib_uverbs_idr_mutex);
+
+ return ret;
+}
+
ssize_t ib_uverbs_destroy_cq(struct ib_uverbs_file *file,
const char __user *buf, int in_len,
int out_len)
return ret ? ret : in_len;
}
+ssize_t ib_uverbs_post_send(struct ib_uverbs_file *file,
+ const char __user *buf, int in_len,
+ int out_len)
+{
+ struct ib_uverbs_post_send cmd;
+ struct ib_uverbs_post_send_resp resp;
+ struct ib_uverbs_send_wr *user_wr;
+ struct ib_send_wr *wr = NULL, *last, *next, *bad_wr;
+ struct ib_qp *qp;
+ int i, sg_ind;
+ ssize_t ret = -EINVAL;
+
+ if (copy_from_user(&cmd, buf, sizeof cmd))
+ return -EFAULT;
+
+ if (in_len < sizeof cmd + cmd.wqe_size * cmd.wr_count +
+ cmd.sge_count * sizeof (struct ib_uverbs_sge))
+ return -EINVAL;
+
+ if (cmd.wqe_size < sizeof (struct ib_uverbs_send_wr))
+ return -EINVAL;
+
+ user_wr = kmalloc(cmd.wqe_size, GFP_KERNEL);
+ if (!user_wr)
+ return -ENOMEM;
+
+ down(&ib_uverbs_idr_mutex);
+
+ qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle);
+ if (!qp || qp->uobject->context != file->ucontext)
+ goto out;
+
+ sg_ind = 0;
+ last = NULL;
+ for (i = 0; i < cmd.wr_count; ++i) {
+ if (copy_from_user(user_wr,
+ buf + sizeof cmd + i * cmd.wqe_size,
+ cmd.wqe_size)) {
+ ret = -EFAULT;
+ goto out;
+ }
+
+ if (user_wr->num_sge + sg_ind > cmd.sge_count) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) +
+ user_wr->num_sge * sizeof (struct ib_sge),
+ GFP_KERNEL);
+ if (!next) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ if (!last)
+ wr = next;
+ else
+ last->next = next;
+ last = next;
+
+ next->next = NULL;
+ next->wr_id = user_wr->wr_id;
+ next->num_sge = user_wr->num_sge;
+ next->opcode = user_wr->opcode;
+ next->send_flags = user_wr->send_flags;
+ next->imm_data = user_wr->imm_data;
+
+ if (qp->qp_type == IB_QPT_UD) {
+ next->wr.ud.ah = idr_find(&ib_uverbs_ah_idr,
+ user_wr->wr.ud.ah);
+ if (!next->wr.ud.ah) {
+ ret = -EINVAL;
+ goto out;
+ }
+ next->wr.ud.remote_qpn = user_wr->wr.ud.remote_qpn;
+ next->wr.ud.remote_qkey = user_wr->wr.ud.remote_qkey;
+ } else {
+ switch (next->opcode) {
+ case IB_WR_RDMA_WRITE:
+ case IB_WR_RDMA_WRITE_WITH_IMM:
+ case IB_WR_RDMA_READ:
+ next->wr.rdma.remote_addr =
+ user_wr->wr.rdma.remote_addr;
+ next->wr.rdma.rkey =
+ user_wr->wr.rdma.rkey;
+ break;
+ case IB_WR_ATOMIC_CMP_AND_SWP:
+ case IB_WR_ATOMIC_FETCH_AND_ADD:
+ next->wr.atomic.remote_addr =
+ user_wr->wr.atomic.remote_addr;
+ next->wr.atomic.compare_add =
+ user_wr->wr.atomic.compare_add;
+ next->wr.atomic.swap = user_wr->wr.atomic.swap;
+ next->wr.atomic.rkey = user_wr->wr.atomic.rkey;
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (next->num_sge) {
+ next->sg_list = (void *) next +
+ ALIGN(sizeof *next, sizeof (struct ib_sge));
+ if (copy_from_user(next->sg_list,
+ buf + sizeof cmd +
+ cmd.wr_count * cmd.wqe_size +
+ sg_ind * sizeof (struct ib_sge),
+ next->num_sge * sizeof (struct ib_sge))) {
+ ret = -EFAULT;
+ goto out;
+ }
+ sg_ind += next->num_sge;
+ } else
+ next->sg_list = NULL;
+ }
+
+ resp.bad_wr = 0;
+ ret = qp->device->post_send(qp, wr, &bad_wr);
+ if (ret)
+ for (next = wr; next; next = next->next) {
+ ++resp.bad_wr;
+ if (next == bad_wr)
+ break;
+ }
+
+ if (copy_to_user((void __user *) (unsigned long) cmd.response,
+ &resp, sizeof resp))
+ ret = -EFAULT;
+
+out:
+ up(&ib_uverbs_idr_mutex);
+
+ while (wr) {
+ next = wr->next;
+ kfree(wr);
+ wr = next;
+ }
+
+ kfree(user_wr);
+
+ return ret ? ret : in_len;
+}
+
+static struct ib_recv_wr *ib_uverbs_unmarshall_recv(const char __user *buf,
+ int in_len,
+ u32 wr_count,
+ u32 sge_count,
+ u32 wqe_size)
+{
+ struct ib_uverbs_recv_wr *user_wr;
+ struct ib_recv_wr *wr = NULL, *last, *next;
+ int sg_ind;
+ int i;
+ int ret;
+
+ if (in_len < wqe_size * wr_count +
+ sge_count * sizeof (struct ib_uverbs_sge))
+ return ERR_PTR(-EINVAL);
+
+ if (wqe_size < sizeof (struct ib_uverbs_recv_wr))
+ return ERR_PTR(-EINVAL);
+
+ user_wr = kmalloc(wqe_size, GFP_KERNEL);
+ if (!user_wr)
+ return ERR_PTR(-ENOMEM);
+
+ sg_ind = 0;
+ last = NULL;
+ for (i = 0; i < wr_count; ++i) {
+ if (copy_from_user(user_wr, buf + i * wqe_size,
+ wqe_size)) {
+ ret = -EFAULT;
+ goto err;
+ }
+
+ if (user_wr->num_sge + sg_ind > sge_count) {
+ ret = -EINVAL;
+ goto err;
+ }
+
+ next = kmalloc(ALIGN(sizeof *next, sizeof (struct ib_sge)) +
+ user_wr->num_sge * sizeof (struct ib_sge),
+ GFP_KERNEL);
+ if (!next) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ if (!last)
+ wr = next;
+ else
+ last->next = next;
+ last = next;
+
+ next->next = NULL;
+ next->wr_id = user_wr->wr_id;
+ next->num_sge = user_wr->num_sge;
+
+ if (next->num_sge) {
+ next->sg_list = (void *) next +
+ ALIGN(sizeof *next, sizeof (struct ib_sge));
+ if (copy_from_user(next->sg_list,
+ buf + wr_count * wqe_size +
+ sg_ind * sizeof (struct ib_sge),
+ next->num_sge * sizeof (struct ib_sge))) {
+ ret = -EFAULT;
+ goto err;
+ }
+ sg_ind += next->num_sge;
+ } else
+ next->sg_list = NULL;
+ }
+
+ kfree(user_wr);
+ return wr;
+
+err:
+ kfree(user_wr);
+
+ while (wr) {
+ next = wr->next;
+ kfree(wr);
+ wr = next;
+ }
+
+ return ERR_PTR(ret);
+}
+
+ssize_t ib_uverbs_post_recv(struct ib_uverbs_file *file,
+ const char __user *buf, int in_len,
+ int out_len)
+{
+ struct ib_uverbs_post_recv cmd;
+ struct ib_uverbs_post_recv_resp resp;
+ struct ib_recv_wr *wr, *next, *bad_wr;
+ struct ib_qp *qp;
+ ssize_t ret = -EINVAL;
+
+ if (copy_from_user(&cmd, buf, sizeof cmd))
+ return -EFAULT;
+
+ wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
+ in_len - sizeof cmd, cmd.wr_count,
+ cmd.sge_count, cmd.wqe_size);
+ if (IS_ERR(wr))
+ return PTR_ERR(wr);
+
+ down(&ib_uverbs_idr_mutex);
+
+ qp = idr_find(&ib_uverbs_qp_idr, cmd.qp_handle);
+ if (!qp || qp->uobject->context != file->ucontext)
+ goto out;
+
+ resp.bad_wr = 0;
+ ret = qp->device->post_recv(qp, wr, &bad_wr);
+ if (ret)
+ for (next = wr; next; next = next->next) {
+ ++resp.bad_wr;
+ if (next == bad_wr)
+ break;
+ }
+
+
+ if (copy_to_user((void __user *) (unsigned long) cmd.response,
+ &resp, sizeof resp))
+ ret = -EFAULT;
+
+out:
+ up(&ib_uverbs_idr_mutex);
+
+ while (wr) {
+ next = wr->next;
+ kfree(wr);
+ wr = next;
+ }
+
+ return ret ? ret : in_len;
+}
+
+ssize_t ib_uverbs_post_srq_recv(struct ib_uverbs_file *file,
+ const char __user *buf, int in_len,
+ int out_len)
+{
+ struct ib_uverbs_post_srq_recv cmd;
+ struct ib_uverbs_post_srq_recv_resp resp;
+ struct ib_recv_wr *wr, *next, *bad_wr;
+ struct ib_srq *srq;
+ ssize_t ret = -EINVAL;
+
+ if (copy_from_user(&cmd, buf, sizeof cmd))
+ return -EFAULT;
+
+ wr = ib_uverbs_unmarshall_recv(buf + sizeof cmd,
+ in_len - sizeof cmd, cmd.wr_count,
+ cmd.sge_count, cmd.wqe_size);
+ if (IS_ERR(wr))
+ return PTR_ERR(wr);
+
+ down(&ib_uverbs_idr_mutex);
+
+ srq = idr_find(&ib_uverbs_srq_idr, cmd.srq_handle);
+ if (!srq || srq->uobject->context != file->ucontext)
+ goto out;
+
+ resp.bad_wr = 0;
+ ret = srq->device->post_srq_recv(srq, wr, &bad_wr);
+ if (ret)
+ for (next = wr; next; next = next->next) {
+ ++resp.bad_wr;
+ if (next == bad_wr)
+ break;
+ }
+
+
+ if (copy_to_user((void __user *) (unsigned long) cmd.response,
+ &resp, sizeof resp))
+ ret = -EFAULT;
+
+out:
+ up(&ib_uverbs_idr_mutex);
+
+ while (wr) {
+ next = wr->next;
+ kfree(wr);
+ wr = next;
+ }
+
+ return ret ? ret : in_len;
+}
+
+ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file,
+ const char __user *buf, int in_len,
+ int out_len)
+{
+ struct ib_uverbs_create_ah cmd;
+ struct ib_uverbs_create_ah_resp resp;
+ struct ib_uobject *uobj;
+ struct ib_pd *pd;
+ struct ib_ah *ah;
+ struct ib_ah_attr attr;
+ int ret;
+
+ if (out_len < sizeof resp)
+ return -ENOSPC;
+
+ if (copy_from_user(&cmd, buf, sizeof cmd))
+ return -EFAULT;
+
+ uobj = kmalloc(sizeof *uobj, GFP_KERNEL);
+ if (!uobj)
+ return -ENOMEM;
+
+ down(&ib_uverbs_idr_mutex);
+
+ pd = idr_find(&ib_uverbs_pd_idr, cmd.pd_handle);
+ if (!pd || pd->uobject->context != file->ucontext) {
+ ret = -EINVAL;
+ goto err_up;
+ }
+
+ uobj->user_handle = cmd.user_handle;
+ uobj->context = file->ucontext;
+
+ attr.dlid = cmd.attr.dlid;
+ attr.sl = cmd.attr.sl;
+ attr.src_path_bits = cmd.attr.src_path_bits;
+ attr.static_rate = cmd.attr.static_rate;
+ attr.port_num = cmd.attr.port_num;
+ attr.grh.flow_label = cmd.attr.grh.flow_label;
+ attr.grh.sgid_index = cmd.attr.grh.sgid_index;
+ attr.grh.hop_limit = cmd.attr.grh.hop_limit;
+ attr.grh.traffic_class = cmd.attr.grh.traffic_class;
+ memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16);
+
+ ah = ib_create_ah(pd, &attr);
+ if (IS_ERR(ah)) {
+ ret = PTR_ERR(ah);
+ goto err_up;
+ }
+
+ ah->uobject = uobj;
+
+retry:
+ if (!idr_pre_get(&ib_uverbs_ah_idr, GFP_KERNEL)) {
+ ret = -ENOMEM;
+ goto err_destroy;
+ }
+
+ ret = idr_get_new(&ib_uverbs_ah_idr, ah, &uobj->id);
+
+ if (ret == -EAGAIN)
+ goto retry;
+ if (ret)
+ goto err_destroy;
+
+ resp.ah_handle = uobj->id;
+
+ if (copy_to_user((void __user *) (unsigned long) cmd.response,
+ &resp, sizeof resp)) {
+ ret = -EFAULT;
+ goto err_idr;
+ }
+
+ down(&file->mutex);
+ list_add_tail(&uobj->list, &file->ucontext->ah_list);
+ up(&file->mutex);
+
+ up(&ib_uverbs_idr_mutex);
+
+ return in_len;
+
+err_idr:
+ idr_remove(&ib_uverbs_ah_idr, uobj->id);
+
+err_destroy:
+ ib_destroy_ah(ah);
+
+err_up:
+ up(&ib_uverbs_idr_mutex);
+
+ kfree(uobj);
+ return ret;
+}
+
+ssize_t ib_uverbs_destroy_ah(struct ib_uverbs_file *file,
+ const char __user *buf, int in_len, int out_len)
+{
+ struct ib_uverbs_destroy_ah cmd;
+ struct ib_ah *ah;
+ struct ib_uobject *uobj;
+ int ret = -EINVAL;
+
+ if (copy_from_user(&cmd, buf, sizeof cmd))
+ return -EFAULT;
+
+ down(&ib_uverbs_idr_mutex);
+
+ ah = idr_find(&ib_uverbs_ah_idr, cmd.ah_handle);
+ if (!ah || ah->uobject->context != file->ucontext)
+ goto out;
+
+ uobj = ah->uobject;
+
+ ret = ib_destroy_ah(ah);
+ if (ret)
+ goto out;
+
+ idr_remove(&ib_uverbs_ah_idr, cmd.ah_handle);
+
+ down(&file->mutex);
+ list_del(&uobj->list);
+ up(&file->mutex);
+
+ kfree(uobj);
+
+out:
+ up(&ib_uverbs_idr_mutex);
+
+ return ret ? ret : in_len;
+}
+
ssize_t ib_uverbs_attach_mcast(struct ib_uverbs_file *file,
const char __user *buf, int in_len,
int out_len)
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff