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IB/CM: Create appropriate path records when handling CM request

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When handling an incoming conection request, ib_cm creates
either an IB or an OPA path record based on the gid field
in the request.

Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Reviewed-by: Don Hiatt <don.hiatt@intel.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Dasaratharaman Chandramouli 2017-06-08 13:38:03 -04:00 committed by Doug Ledford
parent e92aa00a51
commit 6b3c0e6e6d
1 changed files with 31 additions and 7 deletions
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38
drivers/infiniband/core/cm.c
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@ -1428,6 +1428,21 @@ static inline int cm_is_active_peer(__be64 local_ca_guid, __be64 remote_ca_guid,
(be32_to_cpu(local_qpn) > be32_to_cpu(remote_qpn))));
}
static bool cm_req_has_alt_path(struct cm_req_msg *req_msg)
{
return ((req_msg->alt_local_lid) ||
(ib_is_opa_gid(&req_msg->alt_local_gid)));
}
static void cm_path_set_rec_type(struct ib_device *ib_device, u8 port_num,
struct sa_path_rec *path, union ib_gid *gid)
{
if (ib_is_opa_gid(gid) && rdma_cap_opa_ah(ib_device, port_num))
path->rec_type = SA_PATH_REC_TYPE_OPA;
else
path->rec_type = SA_PATH_REC_TYPE_IB;
}
static void cm_format_paths_from_req(struct cm_req_msg *req_msg,
struct sa_path_rec *primary_path,
struct sa_path_rec *alt_path)
@ -1807,9 +1822,12 @@ static int cm_req_handler(struct cm_work *work)
dev_net(gid_attr.ndev));
dev_put(gid_attr.ndev);
} else {
work->path[0].rec_type = SA_PATH_REC_TYPE_IB;
cm_path_set_rec_type(work->port->cm_dev->ib_device,
work->port->port_num,
&work->path[0],
&req_msg->primary_local_gid);
}
if (req_msg->alt_local_lid)
if (cm_req_has_alt_path(req_msg))
work->path[1].rec_type = work->path[0].rec_type;
cm_format_paths_from_req(req_msg, &work->path[0],
&work->path[1]);
@ -1834,16 +1852,19 @@ static int cm_req_handler(struct cm_work *work)
dev_net(gid_attr.ndev));
dev_put(gid_attr.ndev);
} else {
work->path[0].rec_type = SA_PATH_REC_TYPE_IB;
cm_path_set_rec_type(work->port->cm_dev->ib_device,
work->port->port_num,
&work->path[0],
&req_msg->primary_local_gid);
}
if (req_msg->alt_local_lid)
if (cm_req_has_alt_path(req_msg))
work->path[1].rec_type = work->path[0].rec_type;
ib_send_cm_rej(cm_id, IB_CM_REJ_INVALID_GID,
&work->path[0].sgid, sizeof work->path[0].sgid,
NULL, 0);
goto rejected;
}
if (req_msg->alt_local_lid) {
if (cm_req_has_alt_path(req_msg)) {
ret = cm_init_av_by_path(&work->path[1], &cm_id_priv->alt_av,
cm_id_priv);
if (ret) {
@ -2962,8 +2983,6 @@ static void cm_format_path_from_lap(struct cm_id_private *cm_id_priv,
struct sa_path_rec *path,
struct cm_lap_msg *lap_msg)
{
memset(path, 0, sizeof *path);
path->rec_type = SA_PATH_REC_TYPE_IB;
path->dgid = lap_msg->alt_local_gid;
path->sgid = lap_msg->alt_remote_gid;
sa_path_set_dlid(path, htonl(ntohs(lap_msg->alt_local_lid)));
@ -2999,6 +3018,11 @@ static int cm_lap_handler(struct cm_work *work)
return -EINVAL;
param = &work->cm_event.param.lap_rcvd;
memset(&work->path[0], 0, sizeof(work->path[1]));
cm_path_set_rec_type(work->port->cm_dev->ib_device,
work->port->port_num,
&work->path[0],
&lap_msg->alt_local_gid);
param->alternate_path = &work->path[0];
cm_format_path_from_lap(cm_id_priv, param->alternate_path, lap_msg);
work->cm_event.private_data = &lap_msg->private_data;