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/*
* 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;
}
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