/*
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* Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
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* Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "rxe.h"
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#include "rxe_loc.h"
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int rxe_av_chk_attr(struct rxe_dev *rxe, struct rdma_ah_attr *attr)
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{
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struct rxe_port *port;
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port = &rxe->port;
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if (rdma_ah_get_ah_flags(attr) & IB_AH_GRH) {
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u8 sgid_index = rdma_ah_read_grh(attr)->sgid_index;
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if (sgid_index > port->attr.gid_tbl_len) {
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pr_warn("invalid sgid index = %d\n", sgid_index);
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return -EINVAL;
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}
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}
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return 0;
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}
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void rxe_av_from_attr(u8 port_num, struct rxe_av *av,
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struct rdma_ah_attr *attr)
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{
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const struct ib_global_route *grh = rdma_ah_read_grh(attr);
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memset(av, 0, sizeof(*av));
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memcpy(av->grh.dgid.raw, grh->dgid.raw, sizeof(grh->dgid.raw));
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av->grh.flow_label = grh->flow_label;
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av->grh.sgid_index = grh->sgid_index;
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av->grh.hop_limit = grh->hop_limit;
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av->grh.traffic_class = grh->traffic_class;
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av->port_num = port_num;
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}
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void rxe_av_to_attr(struct rxe_av *av, struct rdma_ah_attr *attr)
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{
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struct ib_global_route *grh = rdma_ah_retrieve_grh(attr);
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attr->type = RDMA_AH_ATTR_TYPE_ROCE;
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memcpy(grh->dgid.raw, av->grh.dgid.raw, sizeof(av->grh.dgid.raw));
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grh->flow_label = av->grh.flow_label;
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grh->sgid_index = av->grh.sgid_index;
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grh->hop_limit = av->grh.hop_limit;
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grh->traffic_class = av->grh.traffic_class;
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rdma_ah_set_ah_flags(attr, IB_AH_GRH);
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rdma_ah_set_port_num(attr, av->port_num);
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}
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void rxe_av_fill_ip_info(struct rxe_av *av, struct rdma_ah_attr *attr)
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{
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const struct ib_gid_attr *sgid_attr = attr->grh.sgid_attr;
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rdma_gid2ip((struct sockaddr *)&av->sgid_addr, &sgid_attr->gid);
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rdma_gid2ip((struct sockaddr *)&av->dgid_addr,
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&rdma_ah_read_grh(attr)->dgid);
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av->network_type = rdma_gid_attr_network_type(sgid_attr);
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}
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struct rxe_av *rxe_get_av(struct rxe_pkt_info *pkt)
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{
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if (!pkt || !pkt->qp)
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return NULL;
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if (qp_type(pkt->qp) == IB_QPT_RC || qp_type(pkt->qp) == IB_QPT_UC)
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return &pkt->qp->pri_av;
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return (pkt->wqe) ? &pkt->wqe->av : NULL;
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}
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