[RFC PATCH rdma-core 07/11] librdmacm: Connect rdma_connect to the ECE

[Leon Romanovsky <leon@kernel.org>]

From: Leon Romanovsky <leonro@mellanox.com>

The ECE options are handled to the kernel at the time
of connection request, e.g. rdma_connect().

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
---
 librdmacm/cma.c          | 9 +++++++++
 librdmacm/rdma_cma_abi.h | 6 ++++++
 2 files changed, 15 insertions(+)

diff --git a/librdmacm/cma.c b/librdmacm/cma.c
index 8d2342b5..e912410b 100644
--- a/librdmacm/cma.c
+++ b/librdmacm/cma.c
@@ -1547,6 +1547,13 @@ static void ucma_copy_conn_param_to_kern(struct cma_id_private *id_priv,
 	}
 }

+static void ucma_copy_ece_param_to_kern_req(struct cma_id_private *id_priv,
+					    struct ucma_abi_ece *dst)
+{
+	dst->vendor_id = id_priv->local_ece.vendor_id;
+	dst->attr_mod = id_priv->local_ece.options;
+}
+
 int rdma_connect(struct rdma_cm_id *id, struct rdma_conn_param *conn_param)
 {
 	uint32_t qp_num = (conn_param) ? conn_param->qp_num : 0;
@@ -1579,6 +1586,8 @@ int rdma_connect(struct rdma_cm_id *id, struct rdma_conn_param *conn_param)
 	ucma_copy_conn_param_to_kern(id_priv, &cmd.conn_param, conn_param,
 				     qp_num, srq);

+	ucma_copy_ece_param_to_kern_req(id_priv, &cmd.ece);
+
 	ret = write(id->channel->fd, &cmd, sizeof cmd);
 	if (ret != sizeof cmd)
 		return (ret >= 0) ? ERR(ENODATA) : -1;
diff --git a/librdmacm/rdma_cma_abi.h b/librdmacm/rdma_cma_abi.h
index ab4adb00..6451862e 100644
--- a/librdmacm/rdma_cma_abi.h
+++ b/librdmacm/rdma_cma_abi.h
@@ -223,6 +223,11 @@ struct ucma_abi_ud_param {
 	__u8 reserved2[4];  /* Round to 8-byte boundary to support 32/64 */
 };

+struct ucma_abi_ece {
+	__u32 vendor_id;
+	__u32 attr_mod;
+};
+
 struct ucma_abi_connect {
 	__u32 cmd;
 	__u16 in;
@@ -230,6 +235,7 @@ struct ucma_abi_connect {
 	struct ucma_abi_conn_param conn_param;
 	__u32 id;
 	__u32 reserved;
+	struct ucma_abi_ece ece;
 };

 struct ucma_abi_listen {
--
2.24.1