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-rw-r--r--drivers/infiniband/core/uverbs_marshall.c215
1 files changed, 215 insertions, 0 deletions
diff --git a/drivers/infiniband/core/uverbs_marshall.c b/drivers/infiniband/core/uverbs_marshall.c
new file mode 100644
index 000000000..11a080646
--- /dev/null
+++ b/drivers/infiniband/core/uverbs_marshall.c
@@ -0,0 +1,215 @@
+/*
+ * Copyright (c) 2005 Intel Corporation. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/export.h>
+#include <rdma/ib_marshall.h>
+
+#define OPA_DEFAULT_GID_PREFIX cpu_to_be64(0xfe80000000000000ULL)
+static int rdma_ah_conv_opa_to_ib(struct ib_device *dev,
+ struct rdma_ah_attr *ib,
+ struct rdma_ah_attr *opa)
+{
+ struct ib_port_attr port_attr;
+ int ret = 0;
+
+ /* Do structure copy and the over-write fields */
+ *ib = *opa;
+
+ ib->type = RDMA_AH_ATTR_TYPE_IB;
+ rdma_ah_set_grh(ib, NULL, 0, 0, 1, 0);
+
+ if (ib_query_port(dev, opa->port_num, &port_attr)) {
+ /* Set to default subnet to indicate error */
+ rdma_ah_set_subnet_prefix(ib, OPA_DEFAULT_GID_PREFIX);
+ ret = -EINVAL;
+ } else {
+ rdma_ah_set_subnet_prefix(ib,
+ cpu_to_be64(port_attr.subnet_prefix));
+ }
+ rdma_ah_set_interface_id(ib, OPA_MAKE_ID(rdma_ah_get_dlid(opa)));
+ return ret;
+}
+
+void ib_copy_ah_attr_to_user(struct ib_device *device,
+ struct ib_uverbs_ah_attr *dst,
+ struct rdma_ah_attr *ah_attr)
+{
+ struct rdma_ah_attr *src = ah_attr;
+ struct rdma_ah_attr conv_ah;
+
+ memset(&dst->grh, 0, sizeof(dst->grh));
+
+ if ((ah_attr->type == RDMA_AH_ATTR_TYPE_OPA) &&
+ (rdma_ah_get_dlid(ah_attr) > be16_to_cpu(IB_LID_PERMISSIVE)) &&
+ (!rdma_ah_conv_opa_to_ib(device, &conv_ah, ah_attr)))
+ src = &conv_ah;
+
+ dst->dlid = rdma_ah_get_dlid(src);
+ dst->sl = rdma_ah_get_sl(src);
+ dst->src_path_bits = rdma_ah_get_path_bits(src);
+ dst->static_rate = rdma_ah_get_static_rate(src);
+ dst->is_global = rdma_ah_get_ah_flags(src) &
+ IB_AH_GRH ? 1 : 0;
+ if (dst->is_global) {
+ const struct ib_global_route *grh = rdma_ah_read_grh(src);
+
+ memcpy(dst->grh.dgid, grh->dgid.raw, sizeof(grh->dgid));
+ dst->grh.flow_label = grh->flow_label;
+ dst->grh.sgid_index = grh->sgid_index;
+ dst->grh.hop_limit = grh->hop_limit;
+ dst->grh.traffic_class = grh->traffic_class;
+ }
+ dst->port_num = rdma_ah_get_port_num(src);
+ dst->reserved = 0;
+}
+EXPORT_SYMBOL(ib_copy_ah_attr_to_user);
+
+void ib_copy_qp_attr_to_user(struct ib_device *device,
+ struct ib_uverbs_qp_attr *dst,
+ struct ib_qp_attr *src)
+{
+ dst->qp_state = src->qp_state;
+ dst->cur_qp_state = src->cur_qp_state;
+ dst->path_mtu = src->path_mtu;
+ dst->path_mig_state = src->path_mig_state;
+ dst->qkey = src->qkey;
+ dst->rq_psn = src->rq_psn;
+ dst->sq_psn = src->sq_psn;
+ dst->dest_qp_num = src->dest_qp_num;
+ dst->qp_access_flags = src->qp_access_flags;
+
+ dst->max_send_wr = src->cap.max_send_wr;
+ dst->max_recv_wr = src->cap.max_recv_wr;
+ dst->max_send_sge = src->cap.max_send_sge;
+ dst->max_recv_sge = src->cap.max_recv_sge;
+ dst->max_inline_data = src->cap.max_inline_data;
+
+ ib_copy_ah_attr_to_user(device, &dst->ah_attr, &src->ah_attr);
+ ib_copy_ah_attr_to_user(device, &dst->alt_ah_attr, &src->alt_ah_attr);
+
+ dst->pkey_index = src->pkey_index;
+ dst->alt_pkey_index = src->alt_pkey_index;
+ dst->en_sqd_async_notify = src->en_sqd_async_notify;
+ dst->sq_draining = src->sq_draining;
+ dst->max_rd_atomic = src->max_rd_atomic;
+ dst->max_dest_rd_atomic = src->max_dest_rd_atomic;
+ dst->min_rnr_timer = src->min_rnr_timer;
+ dst->port_num = src->port_num;
+ dst->timeout = src->timeout;
+ dst->retry_cnt = src->retry_cnt;
+ dst->rnr_retry = src->rnr_retry;
+ dst->alt_port_num = src->alt_port_num;
+ dst->alt_timeout = src->alt_timeout;
+ memset(dst->reserved, 0, sizeof(dst->reserved));
+}
+EXPORT_SYMBOL(ib_copy_qp_attr_to_user);
+
+static void __ib_copy_path_rec_to_user(struct ib_user_path_rec *dst,
+ struct sa_path_rec *src)
+{
+ memcpy(dst->dgid, src->dgid.raw, sizeof(src->dgid));
+ memcpy(dst->sgid, src->sgid.raw, sizeof(src->sgid));
+
+ dst->dlid = htons(ntohl(sa_path_get_dlid(src)));
+ dst->slid = htons(ntohl(sa_path_get_slid(src)));
+ dst->raw_traffic = sa_path_get_raw_traffic(src);
+ dst->flow_label = src->flow_label;
+ dst->hop_limit = src->hop_limit;
+ dst->traffic_class = src->traffic_class;
+ dst->reversible = src->reversible;
+ dst->numb_path = src->numb_path;
+ dst->pkey = src->pkey;
+ dst->sl = src->sl;
+ dst->mtu_selector = src->mtu_selector;
+ dst->mtu = src->mtu;
+ dst->rate_selector = src->rate_selector;
+ dst->rate = src->rate;
+ dst->packet_life_time = src->packet_life_time;
+ dst->preference = src->preference;
+ dst->packet_life_time_selector = src->packet_life_time_selector;
+}
+
+void ib_copy_path_rec_to_user(struct ib_user_path_rec *dst,
+ struct sa_path_rec *src)
+{
+ struct sa_path_rec rec;
+
+ if (src->rec_type == SA_PATH_REC_TYPE_OPA) {
+ sa_convert_path_opa_to_ib(&rec, src);
+ __ib_copy_path_rec_to_user(dst, &rec);
+ return;
+ }
+ __ib_copy_path_rec_to_user(dst, src);
+}
+EXPORT_SYMBOL(ib_copy_path_rec_to_user);
+
+void ib_copy_path_rec_from_user(struct sa_path_rec *dst,
+ struct ib_user_path_rec *src)
+{
+ u32 slid, dlid;
+
+ memset(dst, 0, sizeof(*dst));
+ if ((ib_is_opa_gid((union ib_gid *)src->sgid)) ||
+ (ib_is_opa_gid((union ib_gid *)src->dgid))) {
+ dst->rec_type = SA_PATH_REC_TYPE_OPA;
+ slid = opa_get_lid_from_gid((union ib_gid *)src->sgid);
+ dlid = opa_get_lid_from_gid((union ib_gid *)src->dgid);
+ } else {
+ dst->rec_type = SA_PATH_REC_TYPE_IB;
+ slid = ntohs(src->slid);
+ dlid = ntohs(src->dlid);
+ }
+ memcpy(dst->dgid.raw, src->dgid, sizeof dst->dgid);
+ memcpy(dst->sgid.raw, src->sgid, sizeof dst->sgid);
+
+ sa_path_set_dlid(dst, dlid);
+ sa_path_set_slid(dst, slid);
+ sa_path_set_raw_traffic(dst, src->raw_traffic);
+ dst->flow_label = src->flow_label;
+ dst->hop_limit = src->hop_limit;
+ dst->traffic_class = src->traffic_class;
+ dst->reversible = src->reversible;
+ dst->numb_path = src->numb_path;
+ dst->pkey = src->pkey;
+ dst->sl = src->sl;
+ dst->mtu_selector = src->mtu_selector;
+ dst->mtu = src->mtu;
+ dst->rate_selector = src->rate_selector;
+ dst->rate = src->rate;
+ dst->packet_life_time = src->packet_life_time;
+ dst->preference = src->preference;
+ dst->packet_life_time_selector = src->packet_life_time_selector;
+
+ /* TODO: No need to set this */
+ sa_path_set_dmac_zero(dst);
+}
+EXPORT_SYMBOL(ib_copy_path_rec_from_user);