1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
//
// Copyright 2017 Ettus Research, National Instruments Company
//
// SPDX-License-Identifier: GPL-3.0
//
#include "mpmd_xport_mgr.hpp"
#include "mpmd_xport_ctrl_udp.hpp"
#include <uhd/transport/udp_zero_copy.hpp>
using namespace uhd;
using namespace uhd::mpmd::xport;
namespace {
#if defined(UHD_PLATFORM_MACOS) || defined(UHD_PLATFORM_BSD)
const size_t MPMD_RX_SW_BUFF_SIZE_ETH = 0x100000; // 1Mib
#elif defined(UHD_PLATFORM_LINUX) || defined(UHD_PLATFORM_WIN32)
//For an ~8k frame size any size >32MiB is just wasted buffer space:
const size_t MPMD_RX_SW_BUFF_SIZE_ETH = 0x2000000; // 32 MiB
#endif
const size_t MPMD_10GE_DATA_FRAME_MAX_SIZE = 8000; // CHDR packet size in bytes
std::vector<std::string> get_addrs_from_mb_args(
const uhd::device_addr_t& mb_args
) {
// mb_args must always include addr
if (not mb_args.has_key(FIRST_ADDR_KEY)) {
throw uhd::runtime_error("The " + FIRST_ADDR_KEY + " key must be specified in "
"device args to create an Ethernet transport to an RFNoC block");
}
std::vector<std::string> addrs{mb_args[FIRST_ADDR_KEY]};
if (mb_args.has_key(SECOND_ADDR_KEY)){
addrs.push_back(mb_args[SECOND_ADDR_KEY]);
}
return addrs;
}
}
mpmd_xport_ctrl_udp::mpmd_xport_ctrl_udp(
const uhd::device_addr_t& mb_args
) : _mb_args(mb_args)
, _recv_args(filter_args(mb_args, "recv"))
, _send_args(filter_args(mb_args, "send"))
, _available_addrs(get_addrs_from_mb_args(mb_args))
{
}
uhd::both_xports_t
mpmd_xport_ctrl_udp::make_transport(
mpmd_xport_mgr::xport_info_t &xport_info,
const usrp::device3_impl::xport_type_t xport_type,
const uhd::device_addr_t& xport_args_
) {
auto xport_args = xport_args_;
if (xport_type == usrp::device3_impl::RX_DATA
and not xport_args.has_key("recv_buff_size")) {
xport_args["recv_buff_size"] =
std::to_string(MPMD_RX_SW_BUFF_SIZE_ETH);
}
transport::zero_copy_xport_params default_buff_args;
// Create actual UDP transport
// TODO don't hardcode these
default_buff_args.send_frame_size = 8000;
default_buff_args.recv_frame_size = 8000;
default_buff_args.num_recv_frames = 32;
default_buff_args.num_send_frames = 32;
transport::udp_zero_copy::buff_params buff_params;
auto recv = transport::udp_zero_copy::make(
xport_info["ipv4"],
xport_info["port"],
default_buff_args,
buff_params,
xport_args
);
const uint16_t port = recv->get_local_port();
const std::string src_ip_addr = recv->get_local_addr();
xport_info["src_port"] = std::to_string(port);
xport_info["src_ipv4"] = src_ip_addr;
// Create both_xports_t object and finish:
both_xports_t xports;
xports.endianness = uhd::ENDIANNESS_BIG;
xports.send_sid = sid_t(xport_info["send_sid"]);
xports.recv_sid = xports.send_sid.reversed();
xports.recv_buff_size = buff_params.recv_buff_size;
xports.send_buff_size = buff_params.send_buff_size;
xports.recv = recv; // Note: This is a type cast!
xports.send = recv; // This too
return xports;
}
bool mpmd_xport_ctrl_udp::is_valid(
const mpmd_xport_mgr::xport_info_t& xport_info
) const {
return std::find(
_available_addrs.cbegin(),
_available_addrs.cend(),
xport_info.at("ipv4")
) != _available_addrs.cend();
}
|
