/*
* Copyright (c) 2001-2020 Mellanox Technologies, Ltd. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef SRC_VMA_DEV_RING_ETH_DIRECT_H_
#define SRC_VMA_DEV_RING_ETH_DIRECT_H_
#include <tr1/unordered_map>
#include "dev/ring_simple.h"
typedef std::pair<void*, size_t> pair_void_size_t;
typedef std::pair<uint32_t, int> pair_mr_ref_t;
namespace std { namespace tr1 {
template<>
class hash<pair_void_size_t>
{
public:
size_t operator()(const pair_void_size_t &key) const
{
hash<size_t>_hash;
return _hash((uint64_t)key.first ^ key.second);
}
};
}}
typedef std::tr1::unordered_map<pair_void_size_t, pair_mr_ref_t> addr_len_mr_map_t;
class ring_eth_direct : public ring_eth
{
public:
ring_eth_direct(int if_index,
vma_external_mem_attr *ext_ring_attr, ring *parent = NULL);
virtual ~ring_eth_direct();
virtual qp_mgr* create_qp_mgr(const ib_ctx_handler* ib_ctx,
uint8_t port_num,
struct ibv_comp_channel* p_rx_comp_event_channel);
// memory handler
virtual int reg_mr(void *addr, size_t length, uint32_t &lkey);
virtual int dereg_mr(void *addr, size_t length);
// dummy functions to block memory usage and internal thread
virtual void init_tx_buffers(uint32_t count);
virtual mem_buf_desc_t* mem_buf_tx_get(ring_user_id_t id, bool b_block, int n_num_mem_bufs = 1);
virtual int drain_and_proccess(cq_type_t cq_type);
virtual int poll_and_process_element_rx(uint64_t* p_cq_poll_sn,
void* pv_fd_ready_array);
private:
vma_external_mem_attr m_ring_attr;
addr_len_mr_map_t m_mr_map;
};
#endif /* SRC_VMA_DEV_RING_ETH_DIRECT_H_ */