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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-server
* @Short_description: KIRO RDMA Server / Consumer
* @Title: KiroServer
*
* KiroServer implements the server / passive / provider side of the the RDMA
* Communication Channel. It uses a KIRO-TRB to manage its data.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <rdma/rdma_verbs.h>
#include <glib.h>
#include "kiro-server.h"
#include "kiro-rdma.h"
/*
* Definition of 'private' structures and members and macro to access them
*/
#define KIRO_SERVER_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE((obj), KIRO_TYPE_SERVER, KiroServerPrivate))
struct _KiroServerPrivate {
/* Properties */
// PLACEHOLDER //
/* 'Real' private structures */
/* (Not accessible by properties) */
struct rdma_event_channel *ec; // Main Event Channel
struct rdma_cm_id *base; // Base-Listening-Connection
struct kiro_connection *client; // Connection to the client
};
G_DEFINE_TYPE_WITH_PRIVATE (KiroServer, kiro_server, G_TYPE_OBJECT);
static void kiro_server_init (KiroServer *self)
{
KiroServerPrivate *priv = KIRO_SERVER_GET_PRIVATE(self);
memset(priv, 0, sizeof(&priv));
}
static void
kiro_server_finalize (GObject *object)
{
//PASS
}
static void
kiro_server_class_init (KiroServerClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
gobject_class->finalize = kiro_server_finalize;
}
int kiro_server_start (KiroServer *self, char *address, char *port)
{
KiroServerPrivate *priv = KIRO_SERVER_GET_PRIVATE(self);
if(priv->base)
{
printf("Server already started.\n");
return -1;
}
struct rdma_addrinfo hints, *res_addrinfo;
memset(&hints, 0, sizeof(hints));
hints.ai_port_space = RDMA_PS_IB;
hints.ai_flags = RAI_PASSIVE;
if(rdma_getaddrinfo(address, port, &hints, &res_addrinfo))
{
printf("Failed to bind to address %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->base;
qp_attr.sq_sig_all = 1;
if(rdma_create_ep(&(priv->base), res_addrinfo, NULL, &qp_attr))
{
printf("Endpoint creation failed.\n");
return -1;
}
if(rdma_listen(priv->base, NULL))
{
printf("Failed to put server into listening state.\n");
rdma_destroy_ep(priv->base);
return -1;
}
priv->client = (struct kiro_connection *)calloc(1, sizeof(struct kiro_connection));
if(!priv->client)
{
printf("Failed to create container for client connection.\n");
rdma_destroy_ep(priv->base);
return -1;
}
priv->client->identifier = 0; //First Client
if(rdma_get_request(priv->base, &(priv->client->id)))
{
printf("Failure waiting for clienet connection.\n");
rdma_destroy_ep(priv->base);
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->base);
rdma_destroy_ep(priv->client->id);
free(priv->client);
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->base);
rdma_destroy_ep(priv->client->id);
free(priv->client);
return -1;
}
ctx->cf_mr_recv = kiro_create_rdma_memory(priv->client->id->pd, sizeof(struct kiro_ctrl_msg), IBV_ACCESS_LOCAL_WRITE);
ctx->cf_mr_send = kiro_create_rdma_memory(priv->client->id->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->base);
rdma_destroy_ep(priv->client->id);
free(priv->client);
return -1;
}
ctx->cf_mr_recv->size = ctx->cf_mr_send->size = sizeof(struct kiro_ctrl_msg);
priv->client->id->context = ctx;
if(!rdma_post_recv(priv->client->id, priv->client, 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->base);
rdma_destroy_ep(priv->client->id);
free(priv->client);
return -1;
}
if(rdma_accept(priv->client->id, NULL))
{
printf("Failed to establish connection to the server.\n");
kiro_destroy_connection_context(ctx);
rdma_destroy_ep(priv->base);
rdma_destroy_ep(priv->client->id);
free(priv->client);
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->base, priv->ec))
{
printf("Was unable to migrate connection to new Event Channel.\n");
rdma_disconnect(priv->client->id);
kiro_destroy_connection_context(ctx);
rdma_destroy_ep(priv->base);
rdma_destroy_ep(priv->client->id);
free(priv->client);
return -1;
}
//ToDo:
//Create TRB, request RDMA from Server, call kiro_server_sync, ???, Profit!
printf("Client Connected.\n");
return 0;
}
int kiro_server_sync (KiroServer *self)
{
//PASS
return 0;
}
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