[mirror_ubuntu-hirsute-kernel.git] / drivers / infiniband / sw / rxe / rxe_av.c

/*
 * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
 * Copyright (c) 2015 System Fabric Works, Inc. 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 "rxe.h"
#include "rxe_loc.h"

void rxe_init_av(struct rdma_ah_attr *attr, struct rxe_av *av)
{
	rxe_av_from_attr(rdma_ah_get_port_num(attr), av, attr);
	rxe_av_fill_ip_info(av, attr);
	memcpy(av->dmac, attr->roce.dmac, ETH_ALEN);
}

int rxe_av_chk_attr(struct rxe_dev *rxe, struct rdma_ah_attr *attr)
{
	struct rxe_port *port;

	port = &rxe->port;

	if (rdma_ah_get_ah_flags(attr) & IB_AH_GRH) {
		u8 sgid_index = rdma_ah_read_grh(attr)->sgid_index;

		if (sgid_index > port->attr.gid_tbl_len) {
			pr_warn("invalid sgid index = %d\n", sgid_index);
			return -EINVAL;
		}
	}

	return 0;
}

void rxe_av_from_attr(u8 port_num, struct rxe_av *av,
		     struct rdma_ah_attr *attr)
{
	const struct ib_global_route *grh = rdma_ah_read_grh(attr);

	memset(av, 0, sizeof(*av));
	memcpy(av->grh.dgid.raw, grh->dgid.raw, sizeof(grh->dgid.raw));
	av->grh.flow_label = grh->flow_label;
	av->grh.sgid_index = grh->sgid_index;
	av->grh.hop_limit = grh->hop_limit;
	av->grh.traffic_class = grh->traffic_class;
	av->port_num = port_num;
}

void rxe_av_to_attr(struct rxe_av *av, struct rdma_ah_attr *attr)
{
	struct ib_global_route *grh = rdma_ah_retrieve_grh(attr);

	attr->type = RDMA_AH_ATTR_TYPE_ROCE;

	memcpy(grh->dgid.raw, av->grh.dgid.raw, sizeof(av->grh.dgid.raw));
	grh->flow_label = av->grh.flow_label;
	grh->sgid_index = av->grh.sgid_index;
	grh->hop_limit = av->grh.hop_limit;
	grh->traffic_class = av->grh.traffic_class;

	rdma_ah_set_ah_flags(attr, IB_AH_GRH);
	rdma_ah_set_port_num(attr, av->port_num);
}

void rxe_av_fill_ip_info(struct rxe_av *av, struct rdma_ah_attr *attr)
{
	const struct ib_gid_attr *sgid_attr = attr->grh.sgid_attr;

	rdma_gid2ip((struct sockaddr *)&av->sgid_addr, &sgid_attr->gid);
	rdma_gid2ip((struct sockaddr *)&av->dgid_addr,
		    &rdma_ah_read_grh(attr)->dgid);
	av->network_type = rdma_gid_attr_network_type(sgid_attr);
}

struct rxe_av *rxe_get_av(struct rxe_pkt_info *pkt)
{
	if (!pkt || !pkt->qp)
		return NULL;

	if (qp_type(pkt->qp) == IB_QPT_RC || qp_type(pkt->qp) == IB_QPT_UC)
		return &pkt->qp->pri_av;

	return (pkt->wqe) ? &pkt->wqe->av : NULL;
}
Commit	Line	Data
8700e3e7 MS	1	/*
	2	* Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
	3	* Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
	4	*
	5	* This software is available to you under a choice of one of two
	6	* licenses. You may choose to be licensed under the terms of the GNU
	7	* General Public License (GPL) Version 2, available from the file
	8	* COPYING in the main directory of this source tree, or the
	9	* OpenIB.org BSD license below:
	10	*
	11	* Redistribution and use in source and binary forms, with or
	12	* without modification, are permitted provided that the following
	13	* conditions are met:
	14	*
	15	* - Redistributions of source code must retain the above
	16	* copyright notice, this list of conditions and the following
	17	* disclaimer.
	18	*
	19	* - Redistributions in binary form must reproduce the above
	20	* copyright notice, this list of conditions and the following
	21	* disclaimer in the documentation and/or other materials
	22	* provided with the distribution.
	23	*
	24	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	25	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	26	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	27	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	28	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	29	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	30	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	31	* SOFTWARE.
	32	*/
	33
	34	#include "rxe.h"
	35	#include "rxe_loc.h"
	36
fa407188 KH	37	void rxe_init_av(struct rdma_ah_attr attr, struct rxe_av av)
	38	{
	39	rxe_av_from_attr(rdma_ah_get_port_num(attr), av, attr);
	40	rxe_av_fill_ip_info(av, attr);
668aa15b	41	memcpy(av->dmac, attr->roce.dmac, ETH_ALEN);
fa407188 KH	42	}
fa407188 KH	43
90898850	44	int rxe_av_chk_attr(struct rxe_dev rxe, struct rdma_ah_attr attr)
8700e3e7 MS	45	{
	46	struct rxe_port *port;
	47
8700e3e7 MS	48	port = &rxe->port;
8700e3e7 MS	49
d8966fcd DC	50	if (rdma_ah_get_ah_flags(attr) & IB_AH_GRH) {
	51	u8 sgid_index = rdma_ah_read_grh(attr)->sgid_index;
	52
	53	if (sgid_index > port->attr.gid_tbl_len) {
8b62cbd1	54	pr_warn("invalid sgid index = %d\n", sgid_index);
8700e3e7 MS	55	return -EINVAL;
	56	}
	57	}
	58
	59	return 0;
	60	}
	61
ca3d9fee	62	void rxe_av_from_attr(u8 port_num, struct rxe_av *av,
1a241db1	63	struct rdma_ah_attr *attr)
8700e3e7	64	{
7f3ee8e0 JG	65	const struct ib_global_route *grh = rdma_ah_read_grh(attr);
7f3ee8e0 JG	66
8700e3e7	67	memset(av, 0, sizeof(*av));
7f3ee8e0 JG	68	memcpy(av->grh.dgid.raw, grh->dgid.raw, sizeof(grh->dgid.raw));
	69	av->grh.flow_label = grh->flow_label;
	70	av->grh.sgid_index = grh->sgid_index;
	71	av->grh.hop_limit = grh->hop_limit;
	72	av->grh.traffic_class = grh->traffic_class;
8700e3e7	73	av->port_num = port_num;
8700e3e7 MS	74	}
8700e3e7 MS	75
a402dc44	76	void rxe_av_to_attr(struct rxe_av av, struct rdma_ah_attr attr)
8700e3e7	77	{
7f3ee8e0 JG	78	struct ib_global_route *grh = rdma_ah_retrieve_grh(attr);
7f3ee8e0 JG	79
44c58487	80	attr->type = RDMA_AH_ATTR_TYPE_ROCE;
7f3ee8e0 JG	81
	82	memcpy(grh->dgid.raw, av->grh.dgid.raw, sizeof(av->grh.dgid.raw));
	83	grh->flow_label = av->grh.flow_label;
	84	grh->sgid_index = av->grh.sgid_index;
	85	grh->hop_limit = av->grh.hop_limit;
	86	grh->traffic_class = av->grh.traffic_class;
	87
d8966fcd DC	88	rdma_ah_set_ah_flags(attr, IB_AH_GRH);
d8966fcd DC	89	rdma_ah_set_port_num(attr, av->port_num);
8700e3e7 MS	90	}
8700e3e7 MS	91
47ec3866	92	void rxe_av_fill_ip_info(struct rxe_av av, struct rdma_ah_attr attr)
8700e3e7	93	{
47ec3866 PP	94	const struct ib_gid_attr *sgid_attr = attr->grh.sgid_attr;
	95
	96	rdma_gid2ip((struct sockaddr *)&av->sgid_addr, &sgid_attr->gid);
7061f28d JG	97	rdma_gid2ip((struct sockaddr *)&av->dgid_addr,
7061f28d JG	98	&rdma_ah_read_grh(attr)->dgid);
47ec3866	99	av->network_type = rdma_gid_attr_network_type(sgid_attr);
8700e3e7 MS	100	}
	101
	102	struct rxe_av rxe_get_av(struct rxe_pkt_info pkt)
	103	{
	104	if (!pkt \|\| !pkt->qp)
	105	return NULL;
	106
	107	if (qp_type(pkt->qp) == IB_QPT_RC \|\| qp_type(pkt->qp) == IB_QPT_UC)
	108	return &pkt->qp->pri_av;
	109
	110	return (pkt->wqe) ? &pkt->wqe->av : NULL;
	111	}