[PATCH rdma-next v1 12/48] RDMA/cm: Load Alternate Path (LAP) definitions

From: Leon Romanovsky <leon@kernel.org>
To: Doug Ledford <dledford@redhat.com>, Jason Gunthorpe <jgg@mellanox.com>
Cc: Leon Romanovsky <leonro@mellanox.com>,
	RDMA mailing list <linux-rdma@vger.kernel.org>,
	Bart Van Assche <bvanassche@acm.org>,
	Sean Hefty <sean.hefty@intel.com>
Subject: [PATCH rdma-next v1 12/48] RDMA/cm: Load Alternate Path (LAP) definitions
Date: Thu, 21 Nov 2019 20:12:37 +0200	[thread overview]
Message-ID: <20191121181313.129430-13-leon@kernel.org> (raw)
In-Reply-To: <20191121181313.129430-1-leon@kernel.org>

From: Leon Romanovsky <leonro@mellanox.com>

Add LAP message definitions as it is written in IBTA release 1.3 volume 1.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
---
 drivers/infiniband/core/cm.c      |  4 ++--
 drivers/infiniband/core/cm_msgs.h |  2 +-
 include/rdma/ib_cm.h              |  1 -
 include/rdma/ibta_vol1_c12.h      | 26 ++++++++++++++++++++++++++
 4 files changed, 29 insertions(+), 4 deletions(-)

diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
index d11ca6bdf016..002904c03554 100644
--- a/drivers/infiniband/core/cm.c
+++ b/drivers/infiniband/core/cm.c
@@ -3110,7 +3110,7 @@ int ib_send_cm_lap(struct ib_cm_id *cm_id,
 	unsigned long flags;
 	int ret;
 
-	if (private_data && private_data_len > IB_CM_LAP_PRIVATE_DATA_SIZE)
+	if (private_data && private_data_len > CM_LAP_PRIVATE_DATA_SIZE)
 		return -EINVAL;
 
 	cm_id_priv = container_of(cm_id, struct cm_id_private, id);
@@ -3224,7 +3224,7 @@ static int cm_lap_handler(struct cm_work *work)
 	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;
-	work->cm_event.private_data_len = IB_CM_LAP_PRIVATE_DATA_SIZE;
+	work->cm_event.private_data_len = CM_LAP_PRIVATE_DATA_SIZE;
 
 	spin_lock_irq(&cm_id_priv->lock);
 	if (cm_id_priv->id.state != IB_CM_ESTABLISHED)
diff --git a/drivers/infiniband/core/cm_msgs.h b/drivers/infiniband/core/cm_msgs.h
index 98088a84f2fc..6c94d083c996 100644
--- a/drivers/infiniband/core/cm_msgs.h
+++ b/drivers/infiniband/core/cm_msgs.h
@@ -644,7 +644,7 @@ struct cm_lap_msg {
 	/* local ACK timeout:5, rsvd:3 */
 	u8 offset63;
 
-	u8 private_data[IB_CM_LAP_PRIVATE_DATA_SIZE];
+	u8 private_data[CM_LAP_PRIVATE_DATA_SIZE];
 } __packed;
 
 static inline __be32 cm_lap_get_remote_qpn(struct cm_lap_msg *lap_msg)
diff --git a/include/rdma/ib_cm.h b/include/rdma/ib_cm.h
index f1fccc8f387f..08d3217bdaf1 100644
--- a/include/rdma/ib_cm.h
+++ b/include/rdma/ib_cm.h
@@ -65,7 +65,6 @@ enum ib_cm_event_type {
 };
 
 enum ib_cm_data_size {
-	IB_CM_LAP_PRIVATE_DATA_SIZE	 = 168,
 	IB_CM_APR_PRIVATE_DATA_SIZE	 = 148,
 	IB_CM_APR_INFO_LENGTH		 = 72,
 	IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE = 216,
diff --git a/include/rdma/ibta_vol1_c12.h b/include/rdma/ibta_vol1_c12.h
index 48a66797df54..17b730f4cdae 100644
--- a/include/rdma/ibta_vol1_c12.h
+++ b/include/rdma/ibta_vol1_c12.h
@@ -142,4 +142,30 @@
 #define CM_DREP_PRIVATE_DATA CM_FIELD_MLOC(struct cm_drep_msg, 8, 1792)
 #define CM_DREP_PRIVATE_DATA_SIZE 224
 
+/* Table 115 LAP Message Contents */
+#define CM_LAP_LOCAL_COMM_ID CM_FIELD32_LOC(struct cm_lap_msg, 0, 32)
+#define CM_LAP_REMOTE_COMM_ID CM_FIELD32_LOC(struct cm_lap_msg, 4, 32)
+#define CM_LAP_REMOTE_QPN_EECN CM_FIELD32_LOC(struct cm_lap_msg, 12, 24)
+#define CM_LAP_REMOTE_CM_RESPONSE_TIMEOUT                                      \
+	CM_FIELD8_LOC(struct cm_lap_msg, 15, 5)
+#define CM_LAP_ALTERNATE_LOCAL_PORT_LID                                        \
+	CM_FIELD16_LOC(struct cm_lap_msg, 20, 16)
+#define CM_LAP_ALTERNATE_REMOTE_PORT_LID                                       \
+	CM_FIELD16_LOC(struct cm_lap_msg, 22, 16)
+#define CM_LAP_ALTERNATE_LOCAL_PORT_GID                                        \
+	CM_FIELD_MLOC(struct cm_lap_msg, 24, 128)
+#define CM_LAP_ALTERNATE_REMOTE_PORT_GID                                       \
+	CM_FIELD_MLOC(struct cm_lap_msg, 40, 128)
+#define CM_LAP_ALTERNATE_FLOW_LABEL CM_FIELD32_LOC(struct cm_lap_msg, 56, 20)
+#define CM_LAP_ALTERNATE_TRAFFIC_CLASS CM_FIELD8_LOC(struct cm_lap_msg, 59, 8)
+#define CM_LAP_ALTERNATE_HOP_LIMIT CM_FIELD8_LOC(struct cm_lap_msg, 60, 8)
+#define CM_LAP_ALTERNATE_PACKET_RATE CM_FIELD_BLOC(struct cm_lap_msg, 61, 2, 6)
+#define CM_LAP_ALTERNATE_SL CM_FIELD8_LOC(struct cm_lap_msg, 62, 4)
+#define CM_LAP_ALTERNATE_SUBNET_LOCAL                                          \
+	CM_FIELD_BLOC(struct cm_lap_msg, 62, 4, 1)
+#define CM_LAP_ALTERNATE_LOCAL_ACK_TIMEOUT                                     \
+	CM_FIELD8_LOC(struct cm_lap_msg, 63, 5)
+#define CM_LAP_PRIVATE_DATA CM_FIELD_MLOC(struct cm_lap_msg, 64, 1344)
+#define CM_LAP_PRIVATE_DATA_SIZE 168
+
 #endif /* _IBTA_VOL1_C12_H_ */
-- 
2.20.1

