IB: common handling for marshalling parameters to/from userspace

Provide common handling for marshalling data between userspace clients
and kernel InfiniBand drivers.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

4 files changed, 174 insertions, 100 deletions

diff --git a/include/rdma/ib_marshall.h b/include/rdma/ib_marshall.h
new file mode 100644
index 000000000000..66bf4d7d0dfb
--- /dev/null
+++ b/include/rdma/ib_marshall.h
@@ -0,0 +1,50 @@
+/*
+ * 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.
+ */
+
+#if !defined(IB_USER_MARSHALL_H)
+#define IB_USER_MARSHALL_H
+
+#include <rdma/ib_verbs.h>
+#include <rdma/ib_sa.h>
+#include <rdma/ib_user_verbs.h>
+#include <rdma/ib_user_sa.h>
+
+void ib_copy_qp_attr_to_user(struct ib_uverbs_qp_attr *dst,
+			     struct ib_qp_attr *src);
+
+void ib_copy_path_rec_to_user(struct ib_user_path_rec *dst,
+			      struct ib_sa_path_rec *src);
+
+void ib_copy_path_rec_from_user(struct ib_sa_path_rec *dst,
+				struct ib_user_path_rec *src);
+
+#endif /* IB_USER_MARSHALL_H */
diff --git a/include/rdma/ib_user_cm.h b/include/rdma/ib_user_cm.h
index 19be116047f6..a9e1b22d245c 100644
--- a/include/rdma/ib_user_cm.h
+++ b/include/rdma/ib_user_cm.h
@@ -30,13 +30,13 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  *
- * $Id: ib_user_cm.h 2576 2005-06-09 17:00:30Z libor $
+ * $Id: ib_user_cm.h 4019 2005-11-11 00:33:09Z sean.hefty $
  */
 
 #ifndef IB_USER_CM_H
 #define IB_USER_CM_H
 
-#include <linux/types.h>
+#include <rdma/ib_user_sa.h>
 
 #define IB_USER_CM_ABI_VERSION 4
 
@@ -110,58 +110,6 @@ struct ib_ucm_init_qp_attr {
 	__u32 qp_state;
 };
 
-struct ib_ucm_ah_attr {
-	__u8	grh_dgid[16];
-	__u32	grh_flow_label;
-	__u16	dlid;
-	__u16	reserved;
-	__u8	grh_sgid_index;
-	__u8	grh_hop_limit;
-	__u8	grh_traffic_class;
-	__u8	sl;
-	__u8	src_path_bits;
-	__u8	static_rate;
-	__u8	is_global;
-	__u8	port_num;
-};
-
-struct ib_ucm_init_qp_attr_resp {
-	__u32	qp_attr_mask;
-	__u32	qp_state;
-	__u32	cur_qp_state;
-	__u32	path_mtu;
-	__u32	path_mig_state;
-	__u32	qkey;
-	__u32	rq_psn;
-	__u32	sq_psn;
-	__u32	dest_qp_num;
-	__u32	qp_access_flags;
-
-	struct ib_ucm_ah_attr	ah_attr;
-	struct ib_ucm_ah_attr	alt_ah_attr;
-
-	/* ib_qp_cap */
-	__u32	max_send_wr;
-	__u32	max_recv_wr;
-	__u32	max_send_sge;
-	__u32	max_recv_sge;
-	__u32	max_inline_data;
-
-	__u16	pkey_index;
-	__u16	alt_pkey_index;
-	__u8	en_sqd_async_notify;
-	__u8	sq_draining;
-	__u8	max_rd_atomic;
-	__u8	max_dest_rd_atomic;
-	__u8	min_rnr_timer;
-	__u8	port_num;
-	__u8	timeout;
-	__u8	retry_cnt;
-	__u8	rnr_retry;
-	__u8	alt_port_num;
-	__u8	alt_timeout;
-};
-
 struct ib_ucm_listen {
 	__be64 service_id;
 	__be64 service_mask;
@@ -180,28 +128,6 @@ struct ib_ucm_private_data {
 	__u8  reserved[3];
 };
 
-struct ib_ucm_path_rec {
-	__u8  dgid[16];
-	__u8  sgid[16];
-	__be16 dlid;
-	__be16 slid;
-	__u32 raw_traffic;
-	__be32 flow_label;
-	__u32 reversible;
-	__u32 mtu;
-	__be16 pkey;
-	__u8  hop_limit;
-	__u8  traffic_class;
-	__u8  numb_path;
-	__u8  sl;
-	__u8  mtu_selector;
-	__u8  rate_selector;
-	__u8  rate;
-	__u8  packet_life_time_selector;
-	__u8  packet_life_time;
-	__u8  preference;
-};
-
 struct ib_ucm_req {
 	__u32 id;
 	__u32 qpn;
@@ -304,8 +230,8 @@ struct ib_ucm_event_get {
 };
 
 struct ib_ucm_req_event_resp {
-	struct ib_ucm_path_rec primary_path;
-	struct ib_ucm_path_rec alternate_path;
+	struct ib_user_path_rec primary_path;
+	struct ib_user_path_rec alternate_path;
 	__be64                 remote_ca_guid;
 	__u32                  remote_qkey;
 	__u32                  remote_qpn;
@@ -349,7 +275,7 @@ struct ib_ucm_mra_event_resp {
 };
 
 struct ib_ucm_lap_event_resp {
-	struct ib_ucm_path_rec path;
+	struct ib_user_path_rec path;
 };
 
 struct ib_ucm_apr_event_resp {
diff --git a/include/rdma/ib_user_sa.h b/include/rdma/ib_user_sa.h
new file mode 100644
index 000000000000..659120157e14
--- /dev/null
+++ b/include/rdma/ib_user_sa.h
@@ -0,0 +1,60 @@
+/*
+ * 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.
+ */
+
+#ifndef IB_USER_SA_H
+#define IB_USER_SA_H
+
+#include <linux/types.h>
+
+struct ib_user_path_rec {
+	__u8	dgid[16];
+	__u8	sgid[16];
+	__be16	dlid;
+	__be16	slid;
+	__u32	raw_traffic;
+	__be32	flow_label;
+	__u32	reversible;
+	__u32	mtu;
+	__be16	pkey;
+	__u8	hop_limit;
+	__u8	traffic_class;
+	__u8	numb_path;
+	__u8	sl;
+	__u8	mtu_selector;
+	__u8	rate_selector;
+	__u8	rate;
+	__u8	packet_life_time_selector;
+	__u8	packet_life_time;
+	__u8	preference;
+};
+
+#endif /* IB_USER_SA_H */
diff --git a/include/rdma/ib_user_verbs.h b/include/rdma/ib_user_verbs.h
index 338ed4333063..7b5372010f4b 100644
--- a/include/rdma/ib_user_verbs.h
+++ b/include/rdma/ib_user_verbs.h
@@ -32,7 +32,7 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  *
- * $Id: ib_user_verbs.h 2708 2005-06-24 17:27:21Z roland $
+ * $Id: ib_user_verbs.h 4019 2005-11-11 00:33:09Z sean.hefty $
  */
 
 #ifndef IB_USER_VERBS_H
@@ -323,6 +323,64 @@ struct ib_uverbs_destroy_cq_resp {
 	__u32 async_events_reported;
 };
 
+struct ib_uverbs_global_route {
+	__u8  dgid[16];
+	__u32 flow_label;
+	__u8  sgid_index;
+	__u8  hop_limit;
+	__u8  traffic_class;
+	__u8  reserved;
+};
+
+struct ib_uverbs_ah_attr {
+	struct ib_uverbs_global_route grh;
+	__u16 dlid;
+	__u8  sl;
+	__u8  src_path_bits;
+	__u8  static_rate;
+	__u8  is_global;
+	__u8  port_num;
+	__u8  reserved;
+};
+
+struct ib_uverbs_qp_attr {
+	__u32	qp_attr_mask;
+	__u32	qp_state;
+	__u32	cur_qp_state;
+	__u32	path_mtu;
+	__u32	path_mig_state;
+	__u32	qkey;
+	__u32	rq_psn;
+	__u32	sq_psn;
+	__u32	dest_qp_num;
+	__u32	qp_access_flags;
+
+	struct ib_uverbs_ah_attr ah_attr;
+	struct ib_uverbs_ah_attr alt_ah_attr;
+
+	/* ib_qp_cap */
+	__u32	max_send_wr;
+	__u32	max_recv_wr;
+	__u32	max_send_sge;
+	__u32	max_recv_sge;
+	__u32	max_inline_data;
+
+	__u16	pkey_index;
+	__u16	alt_pkey_index;
+	__u8	en_sqd_async_notify;
+	__u8	sq_draining;
+	__u8	max_rd_atomic;
+	__u8	max_dest_rd_atomic;
+	__u8	min_rnr_timer;
+	__u8	port_num;
+	__u8	timeout;
+	__u8	retry_cnt;
+	__u8	rnr_retry;
+	__u8	alt_port_num;
+	__u8	alt_timeout;
+	__u8	reserved[5];
+};
+
 struct ib_uverbs_create_qp {
 	__u64 response;
 	__u64 user_handle;
@@ -541,26 +599,6 @@ struct ib_uverbs_post_srq_recv_resp {
 	__u32 bad_wr;
 };
 
-struct ib_uverbs_global_route {
-	__u8  dgid[16];
-	__u32 flow_label;
-	__u8  sgid_index;
-	__u8  hop_limit;
-	__u8  traffic_class;
-	__u8  reserved;
-};
-
-struct ib_uverbs_ah_attr {
-	struct ib_uverbs_global_route grh;
-	__u16 dlid;
-	__u8  sl;
-	__u8  src_path_bits;
-	__u8  static_rate;
-	__u8  is_global;
-	__u8  port_num;
-	__u8  reserved;
-};
-
 struct ib_uverbs_create_ah {
 	__u64 response;
 	__u64 user_handle;