diff options
| author | Haggai Eran <haggaie@mellanox.com> | 2015-07-30 17:50:21 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2015-08-30 15:48:23 -0400 |
| commit | 24cad9a7e8bfd4cf1ace7ac2a2b3f696a0e70420 (patch) | |
| tree | 53e7e665bd1254141b7fb403904d5faba35abf74 /drivers/infiniband/core/cm.c | |
| parent | aac978e15230fccb7a3e9190eb58732925019300 (diff) | |
| download | lwn-24cad9a7e8bfd4cf1ace7ac2a2b3f696a0e70420.tar.gz lwn-24cad9a7e8bfd4cf1ace7ac2a2b3f696a0e70420.zip | |
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>
Diffstat (limited to 'drivers/infiniband/core/cm.c')
| -rw-r--r-- | drivers/infiniband/core/cm.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c index fa3d3e755127..d2b2c83f0076 100644 --- a/drivers/infiniband/core/cm.c +++ b/drivers/infiniband/core/cm.c @@ -1404,6 +1404,24 @@ static void cm_format_paths_from_req(struct cm_req_msg *req_msg, } } +static u16 cm_get_bth_pkey(struct cm_work *work) +{ + struct ib_device *ib_dev = work->port->cm_dev->ib_device; + u8 port_num = work->port->port_num; + u16 pkey_index = work->mad_recv_wc->wc->pkey_index; + u16 pkey; + int ret; + + ret = ib_get_cached_pkey(ib_dev, port_num, pkey_index, &pkey); + if (ret) { + dev_warn_ratelimited(&ib_dev->dev, "ib_cm: Couldn't retrieve pkey for incoming request (port %d, pkey index %d). %d\n", + port_num, pkey_index, ret); + return 0; + } + + return pkey; +} + static void cm_format_req_event(struct cm_work *work, struct cm_id_private *cm_id_priv, struct ib_cm_id *listen_id) @@ -1414,6 +1432,7 @@ static void cm_format_req_event(struct cm_work *work, req_msg = (struct cm_req_msg *)work->mad_recv_wc->recv_buf.mad; param = &work->cm_event.param.req_rcvd; param->listen_id = listen_id; + param->bth_pkey = cm_get_bth_pkey(work); param->port = cm_id_priv->av.port->port_num; param->primary_path = &work->path[0]; if (req_msg->alt_local_lid) @@ -3105,6 +3124,7 @@ static void cm_format_sidr_req_event(struct cm_work *work, param->pkey = __be16_to_cpu(sidr_req_msg->pkey); param->listen_id = listen_id; param->service_id = sidr_req_msg->service_id; + param->bth_pkey = cm_get_bth_pkey(work); param->port = work->port->port_num; work->cm_event.private_data = &sidr_req_msg->private_data; } |