Previosuly, cm and cma modules supported only IB and RoCE v1 GID type.
In order to support multiple GID types, the gid_type is passed to
cm_init_av_by_path and stored in the path record.
The rdma cm client would use a default GID type that will be saved in
rdma_id_private.
Signed-off-by: Matan Barak <matanb@xxxxxxxxxxxx>
---
drivers/infiniband/core/cm.c | 25 ++++++++++++++++++++-----
drivers/infiniband/core/cma.c | 2 ++
2 files changed, 22 insertions(+), 5 deletions(-)
diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
index 0c15488..ba81025 100644
--- a/drivers/infiniband/core/cm.c
+++ b/drivers/infiniband/core/cm.c
@@ -362,7 +362,7 @@ static int cm_init_av_by_path(struct ib_sa_path_rec *path, struct cm_av *av)
read_lock_irqsave(&cm.device_lock, flags);
list_for_each_entry(cm_dev, &cm.device_list, list) {
if (!ib_find_cached_gid(cm_dev->ib_device, &path->sgid,
- IB_GID_TYPE_IB, ndev, &p, NULL)) {
+ path->gid_type, ndev, &p, NULL)) {
port = cm_dev->port[p-1];
break;
}
@@ -1536,6 +1536,8 @@ static int cm_req_handler(struct cm_work *work)
struct ib_cm_id *cm_id;
struct cm_id_private *cm_id_priv, *listen_cm_id_priv;
struct cm_req_msg *req_msg;
+ union ib_gid gid;
+ struct ib_gid_attr gid_attr;
int ret;
req_msg = (struct cm_req_msg *)work->mad_recv_wc->recv_buf.mad;
@@ -1575,11 +1577,24 @@ static int cm_req_handler(struct cm_work *work)
cm_format_paths_from_req(req_msg, &work->path[0], &work->path[1]);
memcpy(work->path[0].dmac, cm_id_priv->av.ah_attr.dmac, ETH_ALEN);
- ret = cm_init_av_by_path(&work->path[0], &cm_id_priv->av);
+ ret = ib_get_cached_gid(work->port->cm_dev->ib_device,
+ work->port->port_num,
+ cm_id_priv->av.ah_attr.grh.sgid_index,
+ &gid, &gid_attr);
+ if (!ret) {
+ if (gid_attr.ndev)
+ dev_put(gid_attr.ndev);
+ work->path[0].gid_type = gid_attr.gid_type;
+ ret = cm_init_av_by_path(&work->path[0], &cm_id_priv->av);
+ }
if (ret) {
- ib_get_cached_gid(work->port->cm_dev->ib_device,
- work->port->port_num, 0, &work->path[0].sgid,
- NULL);
+ int err = ib_get_cached_gid(work->port->cm_dev->ib_device,
+ work->port->port_num, 0,
+ &work->path[0].sgid,
+ &gid_attr);
+ if (!err && gid_attr.ndev)
+ dev_put(gid_attr.ndev);
+ work->path[0].gid_type = gid_attr.gid_type;
ib_send_cm_rej(cm_id, IB_CM_REJ_INVALID_GID,
&work->path[0].sgid, sizeof work->path[0].sgid,
NULL, 0);
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index dfb92bf..f78b8dd 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -174,6 +174,7 @@ struct rdma_id_private {
u8 tos;
u8 reuseaddr;
u8 afonly;
+ enum ib_gid_type gid_type;
};
struct cma_multicast {
@@ -1952,6 +1953,7 @@ static int cma_resolve_iboe_route(struct rdma_id_private *id_priv)
ndev = dev_get_by_index(&init_net, addr->dev_addr.bound_dev_if);
route->path_rec->net = &init_net;
route->path_rec->ifindex = addr->dev_addr.bound_dev_if;
+ route->path_rec->gid_type = id_priv->gid_type;
}
if (!ndev) {
ret = -ENODEV;
--
2.1.0
--
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