4 * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * * Neither the name of Intel Corporation nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
42 #include <sys/queue.h>
45 #include <rte_common.h>
46 #include <rte_byteorder.h>
48 #include <rte_debug.h>
49 #include <rte_cycles.h>
50 #include <rte_memory.h>
51 #include <rte_memcpy.h>
52 #include <rte_memzone.h>
53 #include <rte_launch.h>
55 #include <rte_per_lcore.h>
56 #include <rte_lcore.h>
57 #include <rte_atomic.h>
58 #include <rte_branch_prediction.h>
60 #include <rte_memory.h>
61 #include <rte_mempool.h>
63 #include <rte_memcpy.h>
64 #include <rte_interrupts.h>
66 #include <rte_ether.h>
67 #include <rte_ethdev.h>
71 #include <rte_string_fns.h>
75 #define UDP_SRC_PORT 1024
76 #define UDP_DST_PORT 1024
78 #define IP_SRC_ADDR ((192U << 24) | (168 << 16) | (0 << 8) | 1)
79 #define IP_DST_ADDR ((192U << 24) | (168 << 16) | (0 << 8) | 2)
81 #define IP_DEFTTL 64 /* from RFC 1340. */
82 #define IP_VERSION 0x40
83 #define IP_HDRLEN 0x05 /* default IP header length == five 32-bits words. */
84 #define IP_VHL_DEF (IP_VERSION | IP_HDRLEN)
86 static struct ipv4_hdr pkt_ip_hdr; /**< IP header of transmitted packets. */
87 static struct udp_hdr pkt_udp_hdr; /**< UDP header of transmitted packets. */
89 static inline struct rte_mbuf *
90 tx_mbuf_alloc(struct rte_mempool *mp)
94 m = __rte_mbuf_raw_alloc(mp);
95 __rte_mbuf_sanity_check_raw(m, 0);
100 copy_buf_to_pkt_segs(void* buf, unsigned len, struct rte_mbuf *pkt,
103 struct rte_mbuf *seg;
108 while (offset >= seg->data_len) {
109 offset -= seg->data_len;
112 copy_len = seg->data_len - offset;
113 seg_buf = rte_pktmbuf_mtod_offset(seg, char *, offset);
114 while (len > copy_len) {
115 rte_memcpy(seg_buf, buf, (size_t) copy_len);
117 buf = ((char*) buf + copy_len);
119 seg_buf = rte_pktmbuf_mtod(seg, char *);
121 rte_memcpy(seg_buf, buf, (size_t) len);
125 copy_buf_to_pkt(void* buf, unsigned len, struct rte_mbuf *pkt, unsigned offset)
127 if (offset + len <= pkt->data_len) {
128 rte_memcpy(rte_pktmbuf_mtod_offset(pkt, char *, offset),
132 copy_buf_to_pkt_segs(buf, len, pkt, offset);
136 setup_pkt_udp_ip_headers(struct ipv4_hdr *ip_hdr,
137 struct udp_hdr *udp_hdr,
138 uint16_t pkt_data_len)
145 * Initialize UDP header.
147 pkt_len = (uint16_t) (pkt_data_len + sizeof(struct udp_hdr));
148 udp_hdr->src_port = rte_cpu_to_be_16(UDP_SRC_PORT);
149 udp_hdr->dst_port = rte_cpu_to_be_16(UDP_DST_PORT);
150 udp_hdr->dgram_len = RTE_CPU_TO_BE_16(pkt_len);
151 udp_hdr->dgram_cksum = 0; /* No UDP checksum. */
154 * Initialize IP header.
156 pkt_len = (uint16_t) (pkt_len + sizeof(struct ipv4_hdr));
157 ip_hdr->version_ihl = IP_VHL_DEF;
158 ip_hdr->type_of_service = 0;
159 ip_hdr->fragment_offset = 0;
160 ip_hdr->time_to_live = IP_DEFTTL;
161 ip_hdr->next_proto_id = IPPROTO_UDP;
162 ip_hdr->packet_id = 0;
163 ip_hdr->total_length = RTE_CPU_TO_BE_16(pkt_len);
164 ip_hdr->src_addr = rte_cpu_to_be_32(IP_SRC_ADDR);
165 ip_hdr->dst_addr = rte_cpu_to_be_32(IP_DST_ADDR);
168 * Compute IP header checksum.
170 ptr16 = (unaligned_uint16_t*) ip_hdr;
172 ip_cksum += ptr16[0]; ip_cksum += ptr16[1];
173 ip_cksum += ptr16[2]; ip_cksum += ptr16[3];
174 ip_cksum += ptr16[4];
175 ip_cksum += ptr16[6]; ip_cksum += ptr16[7];
176 ip_cksum += ptr16[8]; ip_cksum += ptr16[9];
179 * Reduce 32 bit checksum to 16 bits and complement it.
181 ip_cksum = ((ip_cksum & 0xFFFF0000) >> 16) +
182 (ip_cksum & 0x0000FFFF);
183 if (ip_cksum > 65535)
185 ip_cksum = (~ip_cksum) & 0x0000FFFF;
188 ip_hdr->hdr_checksum = (uint16_t) ip_cksum;
192 * Transmit a burst of multi-segments packets.
195 pkt_burst_transmit(struct fwd_stream *fs)
197 struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
198 struct rte_port *txp;
199 struct rte_mbuf *pkt;
200 struct rte_mbuf *pkt_seg;
201 struct rte_mempool *mbp;
202 struct ether_hdr eth_hdr;
205 uint16_t vlan_tci, vlan_tci_outer;
206 uint64_t ol_flags = 0;
208 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
211 uint64_t core_cycles;
213 uint32_t nb_segs, pkt_len;
215 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
216 start_tsc = rte_rdtsc();
219 mbp = current_fwd_lcore()->mbp;
220 txp = &ports[fs->tx_port];
221 vlan_tci = txp->tx_vlan_id;
222 vlan_tci_outer = txp->tx_vlan_id_outer;
223 if (txp->tx_ol_flags & TESTPMD_TX_OFFLOAD_INSERT_VLAN)
224 ol_flags = PKT_TX_VLAN_PKT;
225 if (txp->tx_ol_flags & TESTPMD_TX_OFFLOAD_INSERT_QINQ)
226 ol_flags |= PKT_TX_QINQ_PKT;
227 for (nb_pkt = 0; nb_pkt < nb_pkt_per_burst; nb_pkt++) {
228 pkt = tx_mbuf_alloc(mbp);
235 pkt->data_len = tx_pkt_seg_lengths[0];
237 if (tx_pkt_split == TX_PKT_SPLIT_RND)
238 nb_segs = random() % tx_pkt_nb_segs + 1;
240 nb_segs = tx_pkt_nb_segs;
241 pkt_len = pkt->data_len;
242 for (i = 1; i < nb_segs; i++) {
243 pkt_seg->next = tx_mbuf_alloc(mbp);
244 if (pkt_seg->next == NULL) {
246 rte_pktmbuf_free(pkt);
249 pkt_seg = pkt_seg->next;
250 pkt_seg->data_len = tx_pkt_seg_lengths[i];
251 pkt_len += pkt_seg->data_len;
253 pkt_seg->next = NULL; /* Last segment of packet. */
256 * Initialize Ethernet header.
258 ether_addr_copy(&peer_eth_addrs[fs->peer_addr],ð_hdr.d_addr);
259 ether_addr_copy(&ports[fs->tx_port].eth_addr, ð_hdr.s_addr);
260 eth_hdr.ether_type = rte_cpu_to_be_16(ETHER_TYPE_IPv4);
263 * Copy headers in first packet segment(s).
265 copy_buf_to_pkt(ð_hdr, sizeof(eth_hdr), pkt, 0);
266 copy_buf_to_pkt(&pkt_ip_hdr, sizeof(pkt_ip_hdr), pkt,
267 sizeof(struct ether_hdr));
268 copy_buf_to_pkt(&pkt_udp_hdr, sizeof(pkt_udp_hdr), pkt,
269 sizeof(struct ether_hdr) +
270 sizeof(struct ipv4_hdr));
273 * Complete first mbuf of packet and append it to the
274 * burst of packets to be transmitted.
276 pkt->nb_segs = nb_segs;
277 pkt->pkt_len = pkt_len;
278 pkt->ol_flags = ol_flags;
279 pkt->vlan_tci = vlan_tci;
280 pkt->vlan_tci_outer = vlan_tci_outer;
281 pkt->l2_len = sizeof(struct ether_hdr);
282 pkt->l3_len = sizeof(struct ipv4_hdr);
283 pkts_burst[nb_pkt] = pkt;
285 nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_pkt);
286 fs->tx_packets += nb_tx;
288 #ifdef RTE_TEST_PMD_RECORD_BURST_STATS
289 fs->tx_burst_stats.pkt_burst_spread[nb_tx]++;
291 if (unlikely(nb_tx < nb_pkt)) {
292 if (verbose_level > 0 && fs->fwd_dropped == 0)
293 printf("port %d tx_queue %d - drop "
294 "(nb_pkt:%u - nb_tx:%u)=%u packets\n",
295 fs->tx_port, fs->tx_queue,
296 (unsigned) nb_pkt, (unsigned) nb_tx,
297 (unsigned) (nb_pkt - nb_tx));
298 fs->fwd_dropped += (nb_pkt - nb_tx);
300 rte_pktmbuf_free(pkts_burst[nb_tx]);
301 } while (++nb_tx < nb_pkt);
304 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
305 end_tsc = rte_rdtsc();
306 core_cycles = (end_tsc - start_tsc);
307 fs->core_cycles = (uint64_t) (fs->core_cycles + core_cycles);
312 tx_only_begin(__attribute__((unused)) portid_t pi)
314 uint16_t pkt_data_len;
316 pkt_data_len = (uint16_t) (tx_pkt_length - (sizeof(struct ether_hdr) +
317 sizeof(struct ipv4_hdr) +
318 sizeof(struct udp_hdr)));
319 setup_pkt_udp_ip_headers(&pkt_ip_hdr, &pkt_udp_hdr, pkt_data_len);
322 struct fwd_engine tx_only_engine = {
323 .fwd_mode_name = "txonly",
324 .port_fwd_begin = tx_only_begin,
325 .port_fwd_end = NULL,
326 .packet_fwd = pkt_burst_transmit,