1
2
3
4
5#include <stdarg.h>
6#include <string.h>
7#include <stdio.h>
8#include <errno.h>
9#include <stdint.h>
10#include <unistd.h>
11#include <inttypes.h>
12
13#include <sys/queue.h>
14#include <sys/stat.h>
15
16#include <rte_common.h>
17#include <rte_byteorder.h>
18#include <rte_log.h>
19#include <rte_debug.h>
20#include <rte_cycles.h>
21#include <rte_memory.h>
22#include <rte_memcpy.h>
23#include <rte_launch.h>
24#include <rte_eal.h>
25#include <rte_per_lcore.h>
26#include <rte_lcore.h>
27#include <rte_atomic.h>
28#include <rte_branch_prediction.h>
29#include <rte_mempool.h>
30#include <rte_mbuf.h>
31#include <rte_interrupts.h>
32#include <rte_pci.h>
33#include <rte_ether.h>
34#include <rte_ethdev.h>
35#include <rte_ip.h>
36#include <rte_tcp.h>
37#include <rte_udp.h>
38#include <rte_string_fns.h>
39#include <rte_flow.h>
40
41#include "testpmd.h"
42
43
44static unsigned cfg_n_flows = 1024;
45static uint32_t cfg_ip_src = RTE_IPV4(10, 254, 0, 0);
46static uint32_t cfg_ip_dst = RTE_IPV4(10, 253, 0, 0);
47static uint16_t cfg_udp_src = 1000;
48static uint16_t cfg_udp_dst = 1001;
49static struct rte_ether_addr cfg_ether_src =
50 {{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x00 }};
51static struct rte_ether_addr cfg_ether_dst =
52 {{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x01 }};
53
54#define IP_DEFTTL 64
55
56
57typedef unaligned_uint16_t alias_int16_t __attribute__((__may_alias__));
58
59static inline uint16_t
60ip_sum(const alias_int16_t *hdr, int hdr_len)
61{
62 uint32_t sum = 0;
63
64 while (hdr_len > 1)
65 {
66 sum += *hdr++;
67 if (sum & 0x80000000)
68 sum = (sum & 0xFFFF) + (sum >> 16);
69 hdr_len -= 2;
70 }
71
72 while (sum >> 16)
73 sum = (sum & 0xFFFF) + (sum >> 16);
74
75 return ~sum;
76}
77
78
79
80
81
82
83
84
85static void
86pkt_burst_flow_gen(struct fwd_stream *fs)
87{
88 unsigned pkt_size = tx_pkt_length - 4;
89 struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
90 struct rte_mempool *mbp;
91 struct rte_mbuf *pkt = NULL;
92 struct rte_ether_hdr *eth_hdr;
93 struct rte_ipv4_hdr *ip_hdr;
94 struct rte_udp_hdr *udp_hdr;
95 uint16_t vlan_tci, vlan_tci_outer;
96 uint64_t ol_flags = 0;
97 uint16_t nb_rx;
98 uint16_t nb_tx;
99 uint16_t nb_pkt;
100 uint16_t nb_clones = nb_pkt_flowgen_clones;
101 uint16_t i;
102 uint32_t retry;
103 uint64_t tx_offloads;
104 uint64_t start_tsc = 0;
105 static int next_flow = 0;
106
107 get_start_cycles(&start_tsc);
108
109
110 nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue, pkts_burst,
111 nb_pkt_per_burst);
112 fs->rx_packets += nb_rx;
113
114 for (i = 0; i < nb_rx; i++)
115 rte_pktmbuf_free(pkts_burst[i]);
116
117 mbp = current_fwd_lcore()->mbp;
118 vlan_tci = ports[fs->tx_port].tx_vlan_id;
119 vlan_tci_outer = ports[fs->tx_port].tx_vlan_id_outer;
120
121 tx_offloads = ports[fs->tx_port].dev_conf.txmode.offloads;
122 if (tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT)
123 ol_flags |= PKT_TX_VLAN_PKT;
124 if (tx_offloads & DEV_TX_OFFLOAD_QINQ_INSERT)
125 ol_flags |= PKT_TX_QINQ_PKT;
126 if (tx_offloads & DEV_TX_OFFLOAD_MACSEC_INSERT)
127 ol_flags |= PKT_TX_MACSEC;
128
129 for (nb_pkt = 0; nb_pkt < nb_pkt_per_burst; nb_pkt++) {
130 if (!nb_pkt || !nb_clones) {
131 nb_clones = nb_pkt_flowgen_clones;
132
133 if (nb_clones > nb_pkt_per_burst)
134 nb_clones = nb_pkt_per_burst;
135
136 pkt = rte_mbuf_raw_alloc(mbp);
137 if (!pkt)
138 break;
139
140 pkt->data_len = pkt_size;
141 pkt->next = NULL;
142
143
144 eth_hdr = rte_pktmbuf_mtod(pkt, struct rte_ether_hdr *);
145 rte_ether_addr_copy(&cfg_ether_dst, ð_hdr->d_addr);
146 rte_ether_addr_copy(&cfg_ether_src, ð_hdr->s_addr);
147 eth_hdr->ether_type = rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4);
148
149
150 ip_hdr = (struct rte_ipv4_hdr *)(eth_hdr + 1);
151 memset(ip_hdr, 0, sizeof(*ip_hdr));
152 ip_hdr->version_ihl = RTE_IPV4_VHL_DEF;
153 ip_hdr->type_of_service = 0;
154 ip_hdr->fragment_offset = 0;
155 ip_hdr->time_to_live = IP_DEFTTL;
156 ip_hdr->next_proto_id = IPPROTO_UDP;
157 ip_hdr->packet_id = 0;
158 ip_hdr->src_addr = rte_cpu_to_be_32(cfg_ip_src);
159 ip_hdr->dst_addr = rte_cpu_to_be_32(cfg_ip_dst +
160 next_flow);
161 ip_hdr->total_length = RTE_CPU_TO_BE_16(pkt_size -
162 sizeof(*eth_hdr));
163 ip_hdr->hdr_checksum = ip_sum((const alias_int16_t *)ip_hdr,
164 sizeof(*ip_hdr));
165
166
167 udp_hdr = (struct rte_udp_hdr *)(ip_hdr + 1);
168 udp_hdr->src_port = rte_cpu_to_be_16(cfg_udp_src);
169 udp_hdr->dst_port = rte_cpu_to_be_16(cfg_udp_dst);
170 udp_hdr->dgram_cksum = 0;
171 udp_hdr->dgram_len = RTE_CPU_TO_BE_16(pkt_size -
172 sizeof(*eth_hdr) -
173 sizeof(*ip_hdr));
174 pkt->nb_segs = 1;
175 pkt->pkt_len = pkt_size;
176 pkt->ol_flags &= EXT_ATTACHED_MBUF;
177 pkt->ol_flags |= ol_flags;
178 pkt->vlan_tci = vlan_tci;
179 pkt->vlan_tci_outer = vlan_tci_outer;
180 pkt->l2_len = sizeof(struct rte_ether_hdr);
181 pkt->l3_len = sizeof(struct rte_ipv4_hdr);
182 } else {
183 nb_clones--;
184 rte_mbuf_refcnt_update(pkt, 1);
185 }
186 pkts_burst[nb_pkt] = pkt;
187
188 next_flow = (next_flow + 1) % cfg_n_flows;
189 }
190
191 nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_pkt);
192
193
194
195 if (unlikely(nb_tx < nb_rx) && fs->retry_enabled) {
196 retry = 0;
197 while (nb_tx < nb_rx && retry++ < burst_tx_retry_num) {
198 rte_delay_us(burst_tx_delay_time);
199 nb_tx += rte_eth_tx_burst(fs->tx_port, fs->tx_queue,
200 &pkts_burst[nb_tx], nb_rx - nb_tx);
201 }
202 }
203 fs->tx_packets += nb_tx;
204
205 inc_tx_burst_stats(fs, nb_tx);
206 if (unlikely(nb_tx < nb_pkt)) {
207
208 next_flow -= (nb_pkt - nb_tx);
209 while (next_flow < 0)
210 next_flow += cfg_n_flows;
211
212 do {
213 rte_pktmbuf_free(pkts_burst[nb_tx]);
214 } while (++nb_tx < nb_pkt);
215 }
216
217 get_end_cycles(fs, start_tsc);
218}
219
220struct fwd_engine flow_gen_engine = {
221 .fwd_mode_name = "flowgen",
222 .port_fwd_begin = NULL,
223 .port_fwd_end = NULL,
224 .packet_fwd = pkt_burst_flow_gen,
225};
226
