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
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
|
/*-
* BSD LICENSE
*
* Copyright(c) 2010-2013 Tilera Corporation. All rights reserved.
* All rights reserved.
*
* 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.
* * Neither the name of Tilera Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <stdarg.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <stdint.h>
#include <unistd.h>
#include <inttypes.h>
#include <sys/queue.h>
#include <sys/stat.h>
#include <rte_common.h>
#include <rte_byteorder.h>
#include <rte_log.h>
#include <rte_debug.h>
#include <rte_cycles.h>
#include <rte_memory.h>
#include <rte_memcpy.h>
#include <rte_launch.h>
#include <rte_eal.h>
#include <rte_per_lcore.h>
#include <rte_lcore.h>
#include <rte_atomic.h>
#include <rte_branch_prediction.h>
#include <rte_mempool.h>
#include <rte_mbuf.h>
#include <rte_interrupts.h>
#include <rte_pci.h>
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_ip.h>
#include <rte_tcp.h>
#include <rte_udp.h>
#include <rte_string_fns.h>
#include <rte_flow.h>
#include "testpmd.h"
/* hardcoded configuration (for now) */
static unsigned cfg_n_flows = 1024;
static uint32_t cfg_ip_src = IPv4(10, 254, 0, 0);
static uint32_t cfg_ip_dst = IPv4(10, 253, 0, 0);
static uint16_t cfg_udp_src = 1000;
static uint16_t cfg_udp_dst = 1001;
static struct ether_addr cfg_ether_src =
{{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x00 }};
static struct ether_addr cfg_ether_dst =
{{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x01 }};
#define IP_DEFTTL 64 /* from RFC 1340. */
#define IP_VERSION 0x40
#define IP_HDRLEN 0x05 /* default IP header length == five 32-bits words. */
#define IP_VHL_DEF (IP_VERSION | IP_HDRLEN)
static inline uint16_t
ip_sum(const unaligned_uint16_t *hdr, int hdr_len)
{
uint32_t sum = 0;
while (hdr_len > 1)
{
sum += *hdr++;
if (sum & 0x80000000)
sum = (sum & 0xFFFF) + (sum >> 16);
hdr_len -= 2;
}
while (sum >> 16)
sum = (sum & 0xFFFF) + (sum >> 16);
return ~sum;
}
/*
* Multi-flow generation mode.
*
* We originate a bunch of flows (varying destination IP addresses), and
* terminate receive traffic. Received traffic is simply discarded, but we
* still do so in order to maintain traffic statistics.
*/
static void
pkt_burst_flow_gen(struct fwd_stream *fs)
{
unsigned pkt_size = tx_pkt_length - 4; /* Adjust FCS */
struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
struct rte_mempool *mbp;
struct rte_mbuf *pkt;
struct ether_hdr *eth_hdr;
struct ipv4_hdr *ip_hdr;
struct udp_hdr *udp_hdr;
uint16_t vlan_tci, vlan_tci_outer;
uint64_t ol_flags = 0;
uint16_t nb_rx;
uint16_t nb_tx;
uint16_t nb_pkt;
uint16_t i;
uint32_t retry;
uint64_t tx_offloads;
#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
uint64_t start_tsc;
uint64_t end_tsc;
uint64_t core_cycles;
#endif
static int next_flow = 0;
#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
start_tsc = rte_rdtsc();
#endif
/* Receive a burst of packets and discard them. */
nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue, pkts_burst,
nb_pkt_per_burst);
fs->rx_packets += nb_rx;
for (i = 0; i < nb_rx; i++)
rte_pktmbuf_free(pkts_burst[i]);
mbp = current_fwd_lcore()->mbp;
vlan_tci = ports[fs->tx_port].tx_vlan_id;
vlan_tci_outer = ports[fs->tx_port].tx_vlan_id_outer;
tx_offloads = ports[fs->tx_port].dev_conf.txmode.offloads;
if (tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT)
ol_flags |= PKT_TX_VLAN_PKT;
if (tx_offloads & DEV_TX_OFFLOAD_QINQ_INSERT)
ol_flags |= PKT_TX_QINQ_PKT;
if (tx_offloads & DEV_TX_OFFLOAD_MACSEC_INSERT)
ol_flags |= PKT_TX_MACSEC;
for (nb_pkt = 0; nb_pkt < nb_pkt_per_burst; nb_pkt++) {
pkt = rte_mbuf_raw_alloc(mbp);
if (!pkt)
break;
pkt->data_len = pkt_size;
pkt->next = NULL;
/* Initialize Ethernet header. */
eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
ether_addr_copy(&cfg_ether_dst, ð_hdr->d_addr);
ether_addr_copy(&cfg_ether_src, ð_hdr->s_addr);
eth_hdr->ether_type = rte_cpu_to_be_16(ETHER_TYPE_IPv4);
/* Initialize IP header. */
ip_hdr = (struct ipv4_hdr *)(eth_hdr + 1);
memset(ip_hdr, 0, sizeof(*ip_hdr));
ip_hdr->version_ihl = IP_VHL_DEF;
ip_hdr->type_of_service = 0;
ip_hdr->fragment_offset = 0;
ip_hdr->time_to_live = IP_DEFTTL;
ip_hdr->next_proto_id = IPPROTO_UDP;
ip_hdr->packet_id = 0;
ip_hdr->src_addr = rte_cpu_to_be_32(cfg_ip_src);
ip_hdr->dst_addr = rte_cpu_to_be_32(cfg_ip_dst +
next_flow);
ip_hdr->total_length = RTE_CPU_TO_BE_16(pkt_size -
sizeof(*eth_hdr));
ip_hdr->hdr_checksum = ip_sum((unaligned_uint16_t *)ip_hdr,
sizeof(*ip_hdr));
/* Initialize UDP header. */
udp_hdr = (struct udp_hdr *)(ip_hdr + 1);
udp_hdr->src_port = rte_cpu_to_be_16(cfg_udp_src);
udp_hdr->dst_port = rte_cpu_to_be_16(cfg_udp_dst);
udp_hdr->dgram_cksum = 0; /* No UDP checksum. */
udp_hdr->dgram_len = RTE_CPU_TO_BE_16(pkt_size -
sizeof(*eth_hdr) -
sizeof(*ip_hdr));
pkt->nb_segs = 1;
pkt->pkt_len = pkt_size;
pkt->ol_flags = ol_flags;
pkt->vlan_tci = vlan_tci;
pkt->vlan_tci_outer = vlan_tci_outer;
pkt->l2_len = sizeof(struct ether_hdr);
pkt->l3_len = sizeof(struct ipv4_hdr);
pkts_burst[nb_pkt] = pkt;
next_flow = (next_flow + 1) % cfg_n_flows;
}
nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_pkt);
/*
* Retry if necessary
*/
if (unlikely(nb_tx < nb_rx) && fs->retry_enabled) {
retry = 0;
while (nb_tx < nb_rx && retry++ < burst_tx_retry_num) {
rte_delay_us(burst_tx_delay_time);
nb_tx += rte_eth_tx_burst(fs->tx_port, fs->tx_queue,
&pkts_burst[nb_tx], nb_rx - nb_tx);
}
}
fs->tx_packets += nb_tx;
#ifdef RTE_TEST_PMD_RECORD_BURST_STATS
fs->tx_burst_stats.pkt_burst_spread[nb_tx]++;
#endif
if (unlikely(nb_tx < nb_pkt)) {
/* Back out the flow counter. */
next_flow -= (nb_pkt - nb_tx);
while (next_flow < 0)
next_flow += cfg_n_flows;
do {
rte_pktmbuf_free(pkts_burst[nb_tx]);
} while (++nb_tx < nb_pkt);
}
#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
end_tsc = rte_rdtsc();
core_cycles = (end_tsc - start_tsc);
fs->core_cycles = (uint64_t) (fs->core_cycles + core_cycles);
#endif
}
struct fwd_engine flow_gen_engine = {
.fwd_mode_name = "flowgen",
.port_fwd_begin = NULL,
.port_fwd_end = NULL,
.packet_fwd = pkt_burst_flow_gen,
};
|
