// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
|
/*
|
* Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
|
* Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
|
*/
|
|
#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)
|
{
|
const struct ib_global_route *grh = rdma_ah_read_grh(attr);
|
struct rxe_port *port;
|
int type;
|
|
port = &rxe->port;
|
|
if (rdma_ah_get_ah_flags(attr) & IB_AH_GRH) {
|
if (grh->sgid_index > port->attr.gid_tbl_len) {
|
pr_warn("invalid sgid index = %d\n",
|
grh->sgid_index);
|
return -EINVAL;
|
}
|
|
type = rdma_gid_attr_network_type(grh->sgid_attr);
|
if (type < RDMA_NETWORK_IPV4 ||
|
type > RDMA_NETWORK_IPV6) {
|
pr_warn("invalid network type for rdma_rxe = %d\n",
|
type);
|
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;
|
int ibtype;
|
int type;
|
|
rdma_gid2ip((struct sockaddr *)&av->sgid_addr, &sgid_attr->gid);
|
rdma_gid2ip((struct sockaddr *)&av->dgid_addr,
|
&rdma_ah_read_grh(attr)->dgid);
|
|
ibtype = rdma_gid_attr_network_type(sgid_attr);
|
|
switch (ibtype) {
|
case RDMA_NETWORK_IPV4:
|
type = RXE_NETWORK_TYPE_IPV4;
|
break;
|
case RDMA_NETWORK_IPV6:
|
type = RXE_NETWORK_TYPE_IPV6;
|
break;
|
default:
|
/* not reached - checked in rxe_av_chk_attr */
|
type = 0;
|
break;
|
}
|
|
av->network_type = type;
|
}
|
|
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;
|
}
|
