/*
* 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 DST_ENTRY_UDP_H
#define DST_ENTRY_UDP_H
#include "vma/proto/dst_entry.h"
class dst_entry_udp : public dst_entry
{
public:
dst_entry_udp(in_addr_t dst_ip, uint16_t dst_port, uint16_t src_port,
socket_data &sock_data, resource_allocation_key &ring_alloc_logic);
virtual ~dst_entry_udp();
#ifdef DEFINED_TSO
ssize_t fast_send(const iovec* p_iov, const ssize_t sz_iov, vma_send_attr attr);
ssize_t slow_send(const iovec* p_iov, const ssize_t sz_iov, vma_send_attr attr,
struct vma_rate_limit_t &rate_limit, int flags = 0,
socket_fd_api* sock = 0, tx_call_t call_type = TX_UNDEF);
#else
virtual ssize_t slow_send(const iovec* p_iov, size_t sz_iov, bool is_dummy, struct vma_rate_limit_t &rate_limit, bool b_blocked = true, bool is_rexmit = false, int flags = 0, socket_fd_api* sock = 0, tx_call_t call_type = TX_UNDEF);
virtual ssize_t fast_send(const iovec* p_iov, const ssize_t sz_iov, bool is_dummy, bool b_blocked = true, bool is_rexmit = false);
#endif /* DEFINED_TSO */
protected:
virtual transport_t get_transport(sockaddr_in to);
virtual uint8_t get_protocol_type() const { return IPPROTO_UDP; };
virtual uint32_t get_inline_sge_num() { return 2; };
virtual ibv_sge* get_sge_lst_4_inline_send() { return m_sge; };
virtual ibv_sge* get_sge_lst_4_not_inline_send() { return &m_sge[1]; };
virtual void configure_headers();
virtual void init_sge();
virtual ssize_t pass_buff_to_neigh(const iovec *p_iov, size_t sz_iov, uint16_t packet_id = 0);
atomic_t m_a_tx_ip_id;
size_t m_n_tx_ip_id;
private:
inline ssize_t fast_send_not_fragmented(const iovec* p_iov, const ssize_t sz_iov, vma_wr_tx_packet_attr attr, size_t sz_udp_payload, ssize_t sz_data_payload);
ssize_t fast_send_fragmented(const iovec* p_iov, const ssize_t sz_iov, vma_wr_tx_packet_attr attr, size_t sz_udp_payload, ssize_t sz_data_payload);
const uint32_t m_n_sysvar_tx_bufs_batch_udp;
const bool m_b_sysvar_tx_nonblocked_eagains;
const thread_mode_t m_sysvar_thread_mode;
const uint32_t m_n_sysvar_tx_prefetch_bytes;
};
#endif /* DST_ENTRY_UDP_H */