struct rxe_global_route and struct ib_global_route are not the same thing
and should not be memcpy'd over each other, do a member by member copy
instead. This allows the layout of the in-kernel struct ib_global_route to
be changed without breaking rxe.
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
---
drivers/infiniband/sw/rxe/rxe_av.c | 19 ++++++++++++++++---
1 file changed, 16 insertions(+), 3 deletions(-)
diff --git a/drivers/infiniband/sw/rxe/rxe_av.c b/drivers/infiniband/sw/rxe/rxe_av.c
index c6bce915df50bc..26fe8d7dbc55f3 100644
--- a/drivers/infiniband/sw/rxe/rxe_av.c
+++ b/drivers/infiniband/sw/rxe/rxe_av.c
@@ -55,16 +55,29 @@ int rxe_av_chk_attr(struct rxe_dev *rxe, struct rdma_ah_attr *attr)
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, rdma_ah_read_grh(attr),
- sizeof(*rdma_ah_read_grh(attr)));
+ 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(rdma_ah_retrieve_grh(attr), &av->grh, sizeof(av->grh));
+
+ 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);
}
--
2.17.1
--
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