[linux.git] / drivers / infiniband / core / uverbs_marshall.c

/*
 * 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.reserved, 0, sizeof(dst->grh.reserved));

	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);
Commit	Line	Data
6a9af2e1 SH	1	/*
	2	* Copyright (c) 2005 Intel Corporation. All rights reserved.
	3	*
	4	* This software is available to you under a choice of one of two
	5	* licenses. You may choose to be licensed under the terms of the GNU
	6	* General Public License (GPL) Version 2, available from the file
	7	* COPYING in the main directory of this source tree, or the
	8	* OpenIB.org BSD license below:
	9	*
	10	* Redistribution and use in source and binary forms, with or
	11	* without modification, are permitted provided that the following
	12	* conditions are met:
	13	*
	14	* - Redistributions of source code must retain the above
	15	* copyright notice, this list of conditions and the following
	16	* disclaimer.
	17	*
	18	* - Redistributions in binary form must reproduce the above
	19	* copyright notice, this list of conditions and the following
	20	* disclaimer in the documentation and/or other materials
	21	* provided with the distribution.
	22	*
	23	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	24	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	25	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	26	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	27	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	28	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	29	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	30	* SOFTWARE.
	31	*/
	32
b108d976	33	#include <linux/export.h>
6a9af2e1 SH	34	#include <rdma/ib_marshall.h>
6a9af2e1 SH	35
d541e455 DC	36	#define OPA_DEFAULT_GID_PREFIX cpu_to_be64(0xfe80000000000000ULL)
	37	static int rdma_ah_conv_opa_to_ib(struct ib_device *dev,
	38	struct rdma_ah_attr *ib,
	39	struct rdma_ah_attr *opa)
6a9af2e1	40	{
d541e455 DC	41	struct ib_port_attr port_attr;
	42	int ret = 0;
	43
	44	/* Do structure copy and the over-write fields */
	45	ib = opa;
	46
	47	ib->type = RDMA_AH_ATTR_TYPE_IB;
	48	rdma_ah_set_grh(ib, NULL, 0, 0, 1, 0);
	49
	50	if (ib_query_port(dev, opa->port_num, &port_attr)) {
	51	/* Set to default subnet to indicate error */
	52	rdma_ah_set_subnet_prefix(ib, OPA_DEFAULT_GID_PREFIX);
	53	ret = -EINVAL;
	54	} else {
	55	rdma_ah_set_subnet_prefix(ib,
	56	cpu_to_be64(port_attr.subnet_prefix));
	57	}
	58	rdma_ah_set_interface_id(ib, OPA_MAKE_ID(rdma_ah_get_dlid(opa)));
	59	return ret;
	60	}
	61
	62	void ib_copy_ah_attr_to_user(struct ib_device *device,
	63	struct ib_uverbs_ah_attr *dst,
	64	struct rdma_ah_attr *ah_attr)
	65	{
	66	struct rdma_ah_attr *src = ah_attr;
	67	struct rdma_ah_attr conv_ah;
	68
91a4d157	69	memset(&dst->grh.reserved, 0, sizeof(dst->grh.reserved));
d541e455 DC	70
d541e455 DC	71	if ((ah_attr->type == RDMA_AH_ATTR_TYPE_OPA) &&
19b57c6c	72	(rdma_ah_get_dlid(ah_attr) > be16_to_cpu(IB_LID_PERMISSIVE)) &&
d541e455 DC	73	(!rdma_ah_conv_opa_to_ib(device, &conv_ah, ah_attr)))
	74	src = &conv_ah;
	75
d8966fcd DC	76	dst->dlid = rdma_ah_get_dlid(src);
	77	dst->sl = rdma_ah_get_sl(src);
	78	dst->src_path_bits = rdma_ah_get_path_bits(src);
	79	dst->static_rate = rdma_ah_get_static_rate(src);
	80	dst->is_global = rdma_ah_get_ah_flags(src) &
	81	IB_AH_GRH ? 1 : 0;
4ba66093	82	if (dst->is_global) {
d8966fcd DC	83	const struct ib_global_route *grh = rdma_ah_read_grh(src);
	84
	85	memcpy(dst->grh.dgid, grh->dgid.raw, sizeof(grh->dgid));
	86	dst->grh.flow_label = grh->flow_label;
	87	dst->grh.sgid_index = grh->sgid_index;
	88	dst->grh.hop_limit = grh->hop_limit;
	89	dst->grh.traffic_class = grh->traffic_class;
4ba66093	90	}
d8966fcd	91	dst->port_num = rdma_ah_get_port_num(src);
91a4d157	92	dst->reserved = 0;
6a9af2e1	93	}
75216638	94	EXPORT_SYMBOL(ib_copy_ah_attr_to_user);
6a9af2e1	95
d541e455 DC	96	void ib_copy_qp_attr_to_user(struct ib_device *device,
d541e455 DC	97	struct ib_uverbs_qp_attr *dst,
6a9af2e1 SH	98	struct ib_qp_attr *src)
6a9af2e1 SH	99	{
91a4d157	100	dst->qp_state = src->qp_state;
6a9af2e1 SH	101	dst->cur_qp_state = src->cur_qp_state;
	102	dst->path_mtu = src->path_mtu;
	103	dst->path_mig_state = src->path_mig_state;
	104	dst->qkey = src->qkey;
	105	dst->rq_psn = src->rq_psn;
	106	dst->sq_psn = src->sq_psn;
	107	dst->dest_qp_num = src->dest_qp_num;
	108	dst->qp_access_flags = src->qp_access_flags;
	109
	110	dst->max_send_wr = src->cap.max_send_wr;
	111	dst->max_recv_wr = src->cap.max_recv_wr;
	112	dst->max_send_sge = src->cap.max_send_sge;
	113	dst->max_recv_sge = src->cap.max_recv_sge;
	114	dst->max_inline_data = src->cap.max_inline_data;
	115
d541e455 DC	116	ib_copy_ah_attr_to_user(device, &dst->ah_attr, &src->ah_attr);
d541e455 DC	117	ib_copy_ah_attr_to_user(device, &dst->alt_ah_attr, &src->alt_ah_attr);
6a9af2e1 SH	118
	119	dst->pkey_index = src->pkey_index;
	120	dst->alt_pkey_index = src->alt_pkey_index;
	121	dst->en_sqd_async_notify = src->en_sqd_async_notify;
	122	dst->sq_draining = src->sq_draining;
	123	dst->max_rd_atomic = src->max_rd_atomic;
	124	dst->max_dest_rd_atomic = src->max_dest_rd_atomic;
	125	dst->min_rnr_timer = src->min_rnr_timer;
	126	dst->port_num = src->port_num;
	127	dst->timeout = src->timeout;
	128	dst->retry_cnt = src->retry_cnt;
	129	dst->rnr_retry = src->rnr_retry;
	130	dst->alt_port_num = src->alt_port_num;
	131	dst->alt_timeout = src->alt_timeout;
91a4d157	132	memset(dst->reserved, 0, sizeof(dst->reserved));
6a9af2e1 SH	133	}
	134	EXPORT_SYMBOL(ib_copy_qp_attr_to_user);
	135
f937d93a LR	136	static void __ib_copy_path_rec_to_user(struct ib_user_path_rec *dst,
f937d93a LR	137	struct sa_path_rec *src)
6a9af2e1	138	{
f937d93a LR	139	memcpy(dst->dgid, src->dgid.raw, sizeof(src->dgid));
f937d93a LR	140	memcpy(dst->sgid, src->sgid.raw, sizeof(src->sgid));
6a9af2e1	141
57520751 DC	142	dst->dlid = htons(ntohl(sa_path_get_dlid(src)));
57520751 DC	143	dst->slid = htons(ntohl(sa_path_get_slid(src)));
9fdca4da	144	dst->raw_traffic = sa_path_get_raw_traffic(src);
6a9af2e1 SH	145	dst->flow_label = src->flow_label;
	146	dst->hop_limit = src->hop_limit;
	147	dst->traffic_class = src->traffic_class;
	148	dst->reversible = src->reversible;
	149	dst->numb_path = src->numb_path;
	150	dst->pkey = src->pkey;
	151	dst->sl = src->sl;
	152	dst->mtu_selector = src->mtu_selector;
	153	dst->mtu = src->mtu;
	154	dst->rate_selector = src->rate_selector;
	155	dst->rate = src->rate;
	156	dst->packet_life_time = src->packet_life_time;
	157	dst->preference = src->preference;
	158	dst->packet_life_time_selector = src->packet_life_time_selector;
	159	}
57520751 DC	160
	161	void ib_copy_path_rec_to_user(struct ib_user_path_rec *dst,
	162	struct sa_path_rec *src)
	163	{
	164	struct sa_path_rec rec;
	165
	166	if (src->rec_type == SA_PATH_REC_TYPE_OPA) {
	167	sa_convert_path_opa_to_ib(&rec, src);
	168	__ib_copy_path_rec_to_user(dst, &rec);
	169	return;
	170	}
	171	__ib_copy_path_rec_to_user(dst, src);
	172	}
6a9af2e1 SH	173	EXPORT_SYMBOL(ib_copy_path_rec_to_user);
6a9af2e1 SH	174
c2f8fc4e	175	void ib_copy_path_rec_from_user(struct sa_path_rec *dst,
6a9af2e1 SH	176	struct ib_user_path_rec *src)
6a9af2e1 SH	177	{
9d187177	178	u32 slid, dlid;
57520751 DC	179
	180	memset(dst, 0, sizeof(*dst));
	181	if ((ib_is_opa_gid((union ib_gid *)src->sgid)) \|\|
	182	(ib_is_opa_gid((union ib_gid *)src->dgid))) {
	183	dst->rec_type = SA_PATH_REC_TYPE_OPA;
9d187177 BVA	184	slid = opa_get_lid_from_gid((union ib_gid *)src->sgid);
9d187177 BVA	185	dlid = opa_get_lid_from_gid((union ib_gid *)src->dgid);
57520751 DC	186	} else {
57520751 DC	187	dst->rec_type = SA_PATH_REC_TYPE_IB;
9d187177 BVA	188	slid = ntohs(src->slid);
9d187177 BVA	189	dlid = ntohs(src->dlid);
57520751	190	}
6a9af2e1 SH	191	memcpy(dst->dgid.raw, src->dgid, sizeof dst->dgid);
	192	memcpy(dst->sgid.raw, src->sgid, sizeof dst->sgid);
	193
57520751 DC	194	sa_path_set_dlid(dst, dlid);
57520751 DC	195	sa_path_set_slid(dst, slid);
9fdca4da	196	sa_path_set_raw_traffic(dst, src->raw_traffic);
6a9af2e1 SH	197	dst->flow_label = src->flow_label;
	198	dst->hop_limit = src->hop_limit;
	199	dst->traffic_class = src->traffic_class;
	200	dst->reversible = src->reversible;
	201	dst->numb_path = src->numb_path;
	202	dst->pkey = src->pkey;
	203	dst->sl = src->sl;
	204	dst->mtu_selector = src->mtu_selector;
	205	dst->mtu = src->mtu;
	206	dst->rate_selector = src->rate_selector;
	207	dst->rate = src->rate;
	208	dst->packet_life_time = src->packet_life_time;
	209	dst->preference = src->preference;
	210	dst->packet_life_time_selector = src->packet_life_time_selector;
a59c5850	211
57520751	212	/* TODO: No need to set this */
9fdca4da	213	sa_path_set_dmac_zero(dst);
6a9af2e1 SH	214	}
6a9af2e1 SH	215	EXPORT_SYMBOL(ib_copy_path_rec_from_user);