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/* Copyright (C) 2014 Timo Dritschler <timo.dritschler@kit.edu>
(Karlsruhe Institute of Technology)
This library is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version.
This library is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
details.
You should have received a copy of the GNU Lesser General Public License along
with this library; if not, write to the Free Software Foundation, Inc., 51
Franklin St, Fifth Floor, Boston, MA 02110, USA
*/
/**
* SECTION: kiro-client
* @Short_description: KIRO RDMA Client / Consumer
* @Title: KiroClient
*
* KiroClient implements the client / active / consumer side of the the RDMA
* Communication Channel. It uses a KIRO-CLIENT to manage data read from the Server.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <rdma/rdma_verbs.h>
#include <glib.h>
#include "kiro-client.h"
#include "kiro-rdma.h"
/*
* Definition of 'private' structures and members and macro to access them
*/
#define KIRO_CLIENT_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE((obj), KIRO_TYPE_CLIENT, KiroClientPrivate))
struct _KiroClientPrivate {
/* Properties */
// PLACEHOLDER //
/* 'Real' private structures */
/* (Not accessible by properties) */
struct rdma_event_channel *ec; // Main Event Channel
struct rdma_cm_id *conn; // Connection to the Server
};
G_DEFINE_TYPE_WITH_PRIVATE (KiroClient, kiro_client, G_TYPE_OBJECT);
static void kiro_client_init (KiroClient *self)
{
KiroClientPrivate *priv = KIRO_CLIENT_GET_PRIVATE(self);
memset(priv, 0, sizeof(&priv));
}
static void
kiro_client_finalize (GObject *object)
{
//PASS
}
static void
kiro_client_class_init (KiroClientClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
gobject_class->finalize = kiro_client_finalize;
}
int kiro_client_connect (KiroClient *self, char *address, char* port, size_t timeout)
{
KiroClientPrivate *priv = KIRO_CLIENT_GET_PRIVATE(self);
if(priv->conn)
{
printf("Already connected to server.\n");
return -1;
}
struct rdma_addrinfo hints, *res_addrinfo;
memset(&hints, 0, sizeof(hints));
hints.ai_port_space = RDMA_PS_IB;
if(rdma_getaddrinfo(address, port, &hints, &res_addrinfo))
{
printf("Failed to resolve Route to server %s:%s\n",address, port);
return -1;
}
struct ibv_qp_init_attr qp_attr;
memset(&qp_attr, 0, sizeof(qp_attr));
qp_attr.cap.max_send_wr = 10;
qp_attr.cap.max_recv_wr = 10;
qp_attr.cap.max_send_sge = 1;
qp_attr.cap.max_recv_sge = 1;
qp_attr.qp_context = priv->conn;
qp_attr.sq_sig_all = 1;
if(rdma_create_ep(&(priv->conn), res_addrinfo, NULL, &qp_attr))
{
printf("Endpoint creation failed.\n");
return -1;
}
struct kiro_connection_context *ctx = (struct kiro_connection_context *)calloc(1,sizeof(struct kiro_connection_context));
if(!ctx)
{
printf("Failed to create connection context.\n");
rdma_destroy_ep(priv->conn);
return -1;
}
ctx->cf_mr_send = (struct kiro_rdma_mem *)calloc(1, sizeof(struct kiro_rdma_mem));
ctx->cf_mr_recv = (struct kiro_rdma_mem *)calloc(1, sizeof(struct kiro_rdma_mem));
if(!ctx->cf_mr_recv || !ctx->cf_mr_send)
{
printf("Failed to allocate Control Flow Memory Container.\n");
kiro_destroy_connection_context(ctx);
rdma_destroy_ep(priv->conn);
return -1;
}
ctx->cf_mr_recv = kiro_create_rdma_memory(priv->conn->pd, sizeof(struct kiro_ctrl_msg), IBV_ACCESS_LOCAL_WRITE);
ctx->cf_mr_send = kiro_create_rdma_memory(priv->conn->pd, sizeof(struct kiro_ctrl_msg), IBV_ACCESS_LOCAL_WRITE);
if(!ctx->cf_mr_recv || !ctx->cf_mr_send)
{
printf("Failed to register control message memory.\n");
kiro_destroy_connection_context(ctx);
rdma_destroy_ep(priv->conn);
return -1;
}
ctx->cf_mr_recv->size = ctx->cf_mr_send->size = sizeof(struct kiro_ctrl_msg);
priv->conn->context = ctx;
if(!rdma_post_recv(priv->conn, priv->conn, ctx->cf_mr_recv->mem, ctx->cf_mr_recv->size, ctx->cf_mr_recv->mr))
{
printf("Posting preemtive receive for connection failed.\n");
kiro_destroy_connection_context(ctx);
rdma_destroy_ep(priv->conn);
return -1;
}
if(rdma_connect(priv->conn, NULL))
{
printf("Failed to establish connection to the server.\n");
kiro_destroy_connection_context(ctx);
rdma_destroy_ep(priv->conn);
return -1;
}
priv->ec = rdma_create_event_channel();
int oldflags = fcntl (priv->ec->fd, F_GETFL, 0);
/* Only change the FD Mode if we were able to get its flags */
if (oldflags >= 0) {
oldflags |= O_NONBLOCK;
/* Store modified flag word in the descriptor. */
fcntl (priv->ec->fd, F_SETFL, oldflags);
}
if(rdma_migrate_id(priv->conn, priv->ec))
{
printf("Was unable to migrate connection to new Event Channel.\n");
rdma_disconnect(priv->conn);
kiro_destroy_connection_context(ctx);
rdma_destroy_ep(priv->conn);
return -1;
}
//ToDo:
//Create TRB, request RDMA from Server, call kiro_client_sync, ???, Profit!
printf("Connect to server.\n");
return 0;
}
int kiro_client_sync (KiroClient *self)
{
//PASS
return 0;
}
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