[PATCH rdma-core 07/12] librdmacm: Return ECE results through rdma_accept

[Leon Romanovsky <leon@kernel.org>]

From: Leon Romanovsky <leonro@mellanox.com>

Passive side (server) returns its answer through REP message,
which is constructed as a result of rdma_accept().

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
---
 librdmacm/cma.c          | 9 +++++++++
 librdmacm/rdma_cma_abi.h | 1 +
 2 files changed, 10 insertions(+)

diff --git a/librdmacm/cma.c b/librdmacm/cma.c
index 91735225..3c356eca 100644
--- a/librdmacm/cma.c
+++ b/librdmacm/cma.c
@@ -1668,6 +1668,14 @@ err:
 	return ret;
 }

+static void ucma_copy_ece_param_to_kern_rep(struct cma_id_private *id_priv,
+					    struct ucma_abi_ece *dst)
+{
+	/* Return result with same ID as received. */
+	dst->vendor_id = id_priv->remote_ece.vendor_id;
+	dst->attr_mod = id_priv->local_ece.options;
+}
+
 int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param)
 {
 	uint32_t qp_num = id->qp ? id->qp->qp_num : conn_param->qp_num;
@@ -1709,6 +1717,7 @@ int rdma_accept(struct rdma_cm_id *id, struct rdma_conn_param *conn_param)
 	cmd.uid = (uintptr_t) id_priv;
 	ucma_copy_conn_param_to_kern(id_priv, &cmd.conn_param, conn_param,
 				     qp_num, srq);
+	ucma_copy_ece_param_to_kern_rep(id_priv, &cmd.ece);

 	ret = write(id->channel->fd, &cmd, sizeof cmd);
 	if (ret != sizeof cmd) {
diff --git a/librdmacm/rdma_cma_abi.h b/librdmacm/rdma_cma_abi.h
index 6451862e..4639941b 100644
--- a/librdmacm/rdma_cma_abi.h
+++ b/librdmacm/rdma_cma_abi.h
@@ -254,6 +254,7 @@ struct ucma_abi_accept {
 	struct ucma_abi_conn_param conn_param;
 	__u32 id;
 	__u32 reserved;
+	struct ucma_abi_ece ece;
 };

 struct ucma_abi_reject {
--
2.25.2