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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2016 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2014-2015 Los Alamos National Security, LLC. All rights
* reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#ifndef MCA_BTL_TCP_FRAG_H
#define MCA_BTL_TCP_FRAG_H
#include "opal_config.h"
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_SYS_UIO_H
# include <sys/uio.h>
#endif
#ifdef HAVE_NET_UIO_H
# include <net/uio.h>
#endif
#include "btl_tcp.h"
#include "btl_tcp_hdr.h"
BEGIN_C_DECLS
#define MCA_BTL_TCP_FRAG_IOVEC_NUMBER 4
/**
* TCP fragment derived type.
*/
struct mca_btl_tcp_frag_t {
mca_btl_base_descriptor_t base;
mca_btl_base_segment_t segments[2];
struct mca_btl_base_endpoint_t *endpoint;
struct mca_btl_tcp_module_t *btl;
mca_btl_tcp_hdr_t hdr;
struct iovec iov[MCA_BTL_TCP_FRAG_IOVEC_NUMBER + 1];
struct iovec *iov_ptr;
uint32_t iov_cnt;
uint32_t iov_idx;
size_t size;
uint16_t next_step;
int rc;
opal_free_list_t *my_list;
/* fake rdma completion */
struct {
mca_btl_base_rdma_completion_fn_t func;
void *data;
void *context;
} cb;
};
typedef struct mca_btl_tcp_frag_t mca_btl_tcp_frag_t;
OBJ_CLASS_DECLARATION(mca_btl_tcp_frag_t);
typedef struct mca_btl_tcp_frag_t mca_btl_tcp_frag_eager_t;
OBJ_CLASS_DECLARATION(mca_btl_tcp_frag_eager_t);
typedef struct mca_btl_tcp_frag_t mca_btl_tcp_frag_max_t;
OBJ_CLASS_DECLARATION(mca_btl_tcp_frag_max_t);
typedef struct mca_btl_tcp_frag_t mca_btl_tcp_frag_user_t;
OBJ_CLASS_DECLARATION(mca_btl_tcp_frag_user_t);
/*
* Macros to allocate/return descriptors from module specific
* free list(s).
*/
#define MCA_BTL_TCP_FRAG_ALLOC_EAGER(frag) \
{ \
frag = (mca_btl_tcp_frag_t *) opal_free_list_get(&mca_btl_tcp_component.tcp_frag_eager); \
}
#define MCA_BTL_TCP_FRAG_ALLOC_MAX(frag) \
{ \
frag = (mca_btl_tcp_frag_t *) opal_free_list_get(&mca_btl_tcp_component.tcp_frag_max); \
}
#define MCA_BTL_TCP_FRAG_ALLOC_USER(frag) \
{ \
frag = (mca_btl_tcp_frag_t *) opal_free_list_get(&mca_btl_tcp_component.tcp_frag_user); \
}
#define MCA_BTL_TCP_FRAG_RETURN(frag) \
{ \
opal_free_list_return(frag->my_list, (opal_free_list_item_t *) (frag)); \
}
#define MCA_BTL_TCP_FRAG_INIT_DST(frag, ep) \
do { \
frag->rc = 0; \
frag->btl = ep->endpoint_btl; \
frag->endpoint = ep; \
frag->iov[0].iov_len = sizeof(frag->hdr); \
frag->iov[0].iov_base = (IOVBASE_TYPE *) &frag->hdr; \
frag->iov_cnt = 1; \
frag->iov_idx = 0; \
frag->iov_ptr = frag->iov; \
frag->base.des_segments = frag->segments; \
frag->base.des_segment_count = 1; \
} while (0)
bool mca_btl_tcp_frag_send(mca_btl_tcp_frag_t *, int sd);
bool mca_btl_tcp_frag_recv(mca_btl_tcp_frag_t *, int sd);
size_t mca_btl_tcp_frag_dump(mca_btl_tcp_frag_t *frag, char *msg, char *buf, size_t length);
END_C_DECLS
#endif
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