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IB/cm: Expose BTH P_Key in CM and SIDR request events
The rdma_cm module will later use the P_Key from the BTH to de-mux requests. See discussion at: http://www.spinics.net/lists/netdev/msg336067.html Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Cc: Liran Liss <liranl@mellanox.com> Signed-off-by: Haggai Eran <haggaie@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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@ -1404,6 +1404,24 @@ static void cm_format_paths_from_req(struct cm_req_msg *req_msg,
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}
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}
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static u16 cm_get_bth_pkey(struct cm_work *work)
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{
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struct ib_device *ib_dev = work->port->cm_dev->ib_device;
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u8 port_num = work->port->port_num;
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u16 pkey_index = work->mad_recv_wc->wc->pkey_index;
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u16 pkey;
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int ret;
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ret = ib_get_cached_pkey(ib_dev, port_num, pkey_index, &pkey);
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if (ret) {
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dev_warn_ratelimited(&ib_dev->dev, "ib_cm: Couldn't retrieve pkey for incoming request (port %d, pkey index %d). %d\n",
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port_num, pkey_index, ret);
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return 0;
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}
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return pkey;
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}
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static void cm_format_req_event(struct cm_work *work,
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struct cm_id_private *cm_id_priv,
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struct ib_cm_id *listen_id)
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@ -1414,6 +1432,7 @@ static void cm_format_req_event(struct cm_work *work,
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req_msg = (struct cm_req_msg *)work->mad_recv_wc->recv_buf.mad;
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param = &work->cm_event.param.req_rcvd;
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param->listen_id = listen_id;
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param->bth_pkey = cm_get_bth_pkey(work);
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param->port = cm_id_priv->av.port->port_num;
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param->primary_path = &work->path[0];
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if (req_msg->alt_local_lid)
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@ -3105,6 +3124,7 @@ static void cm_format_sidr_req_event(struct cm_work *work,
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param->pkey = __be16_to_cpu(sidr_req_msg->pkey);
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param->listen_id = listen_id;
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param->service_id = sidr_req_msg->service_id;
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param->bth_pkey = cm_get_bth_pkey(work);
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param->port = work->port->port_num;
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work->cm_event.private_data = &sidr_req_msg->private_data;
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}
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@ -113,6 +113,10 @@ struct ib_cm_id;
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struct ib_cm_req_event_param {
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struct ib_cm_id *listen_id;
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/* P_Key that was used by the GMP's BTH header */
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u16 bth_pkey;
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u8 port;
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struct ib_sa_path_rec *primary_path;
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@ -224,6 +228,8 @@ struct ib_cm_apr_event_param {
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struct ib_cm_sidr_req_event_param {
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struct ib_cm_id *listen_id;
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__be64 service_id;
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/* P_Key that was used by the GMP's BTH header */
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u16 bth_pkey;
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u8 port;
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u16 pkey;
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};
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