--- /dev/null
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2014 Intel 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 Intel 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_memzone.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_ring.h>
+#include <rte_memory.h>
+#include <rte_mempool.h>
+#include <rte_mbuf.h>
+#include <rte_memcpy.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 "testpmd.h"
+
+#define UDP_SRC_PORT 1024
+#define UDP_DST_PORT 1024
+
+#define IP_SRC_ADDR ((192U << 24) | (168 << 16) | (0 << 8) | 1)
+#define IP_DST_ADDR ((192U << 24) | (168 << 16) | (0 << 8) | 2)
+
+#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 struct ipv4_hdr pkt_ip_hdr; /**< IP header of transmitted packets. */
+static struct udp_hdr pkt_udp_hdr; /**< UDP header of transmitted packets. */
+
+static inline struct rte_mbuf *
+tx_mbuf_alloc(struct rte_mempool *mp)
+{
+ struct rte_mbuf *m;
+
+ m = __rte_mbuf_raw_alloc(mp);
+ __rte_mbuf_sanity_check_raw(m, 0);
+ return m;
+}
+
+static void
+copy_buf_to_pkt_segs(void* buf, unsigned len, struct rte_mbuf *pkt,
+ unsigned offset)
+{
+ struct rte_mbuf *seg;
+ void *seg_buf;
+ unsigned copy_len;
+
+ seg = pkt;
+ while (offset >= seg->data_len) {
+ offset -= seg->data_len;
+ seg = seg->next;
+ }
+ copy_len = seg->data_len - offset;
+ seg_buf = rte_pktmbuf_mtod_offset(seg, char *, offset);
+ while (len > copy_len) {
+ rte_memcpy(seg_buf, buf, (size_t) copy_len);
+ len -= copy_len;
+ buf = ((char*) buf + copy_len);
+ seg = seg->next;
+ seg_buf = rte_pktmbuf_mtod(seg, char *);
+ }
+ rte_memcpy(seg_buf, buf, (size_t) len);
+}
+
+static inline void
+copy_buf_to_pkt(void* buf, unsigned len, struct rte_mbuf *pkt, unsigned offset)
+{
+ if (offset + len <= pkt->data_len) {
+ rte_memcpy(rte_pktmbuf_mtod_offset(pkt, char *, offset),
+ buf, (size_t) len);
+ return;
+ }
+ copy_buf_to_pkt_segs(buf, len, pkt, offset);
+}
+
+static void
+setup_pkt_udp_ip_headers(struct ipv4_hdr *ip_hdr,
+ struct udp_hdr *udp_hdr,
+ uint16_t pkt_data_len)
+{
+ uint16_t *ptr16;
+ uint32_t ip_cksum;
+ uint16_t pkt_len;
+
+ /*
+ * Initialize UDP header.
+ */
+ pkt_len = (uint16_t) (pkt_data_len + sizeof(struct udp_hdr));
+ udp_hdr->src_port = rte_cpu_to_be_16(UDP_SRC_PORT);
+ udp_hdr->dst_port = rte_cpu_to_be_16(UDP_DST_PORT);
+ udp_hdr->dgram_len = RTE_CPU_TO_BE_16(pkt_len);
+ udp_hdr->dgram_cksum = 0; /* No UDP checksum. */
+
+ /*
+ * Initialize IP header.
+ */
+ pkt_len = (uint16_t) (pkt_len + sizeof(struct ipv4_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->total_length = RTE_CPU_TO_BE_16(pkt_len);
+ ip_hdr->src_addr = rte_cpu_to_be_32(IP_SRC_ADDR);
+ ip_hdr->dst_addr = rte_cpu_to_be_32(IP_DST_ADDR);
+
+ /*
+ * Compute IP header checksum.
+ */
+ ptr16 = (unaligned_uint16_t*) ip_hdr;
+ ip_cksum = 0;
+ ip_cksum += ptr16[0]; ip_cksum += ptr16[1];
+ ip_cksum += ptr16[2]; ip_cksum += ptr16[3];
+ ip_cksum += ptr16[4];
+ ip_cksum += ptr16[6]; ip_cksum += ptr16[7];
+ ip_cksum += ptr16[8]; ip_cksum += ptr16[9];
+
+ /*
+ * Reduce 32 bit checksum to 16 bits and complement it.
+ */
+ ip_cksum = ((ip_cksum & 0xFFFF0000) >> 16) +
+ (ip_cksum & 0x0000FFFF);
+ if (ip_cksum > 65535)
+ ip_cksum -= 65535;
+ ip_cksum = (~ip_cksum) & 0x0000FFFF;
+ if (ip_cksum == 0)
+ ip_cksum = 0xFFFF;
+ ip_hdr->hdr_checksum = (uint16_t) ip_cksum;
+}
+
+/*
+ * Transmit a burst of multi-segments packets.
+ */
+static void
+pkt_burst_transmit(struct fwd_stream *fs)
+{
+ struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
+ struct rte_port *txp;
+ struct rte_mbuf *pkt;
+ struct rte_mbuf *pkt_seg;
+ struct rte_mempool *mbp;
+ struct ether_hdr eth_hdr;
+ uint16_t nb_tx;
+ uint16_t nb_pkt;
+ uint16_t vlan_tci, vlan_tci_outer;
+ uint64_t ol_flags = 0;
+ uint8_t i;
+#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
+ uint64_t start_tsc;
+ uint64_t end_tsc;
+ uint64_t core_cycles;
+#endif
+ uint32_t nb_segs, pkt_len;
+
+#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
+ start_tsc = rte_rdtsc();
+#endif
+
+ mbp = current_fwd_lcore()->mbp;
+ txp = &ports[fs->tx_port];
+ vlan_tci = txp->tx_vlan_id;
+ vlan_tci_outer = txp->tx_vlan_id_outer;
+ if (txp->tx_ol_flags & TESTPMD_TX_OFFLOAD_INSERT_VLAN)
+ ol_flags = PKT_TX_VLAN_PKT;
+ if (txp->tx_ol_flags & TESTPMD_TX_OFFLOAD_INSERT_QINQ)
+ ol_flags |= PKT_TX_QINQ_PKT;
+ for (nb_pkt = 0; nb_pkt < nb_pkt_per_burst; nb_pkt++) {
+ pkt = tx_mbuf_alloc(mbp);
+ if (pkt == NULL) {
+ nomore_mbuf:
+ if (nb_pkt == 0)
+ return;
+ break;
+ }
+ pkt->data_len = tx_pkt_seg_lengths[0];
+ pkt_seg = pkt;
+ if (tx_pkt_split == TX_PKT_SPLIT_RND)
+ nb_segs = random() % tx_pkt_nb_segs + 1;
+ else
+ nb_segs = tx_pkt_nb_segs;
+ pkt_len = pkt->data_len;
+ for (i = 1; i < nb_segs; i++) {
+ pkt_seg->next = tx_mbuf_alloc(mbp);
+ if (pkt_seg->next == NULL) {
+ pkt->nb_segs = i;
+ rte_pktmbuf_free(pkt);
+ goto nomore_mbuf;
+ }
+ pkt_seg = pkt_seg->next;
+ pkt_seg->data_len = tx_pkt_seg_lengths[i];
+ pkt_len += pkt_seg->data_len;
+ }
+ pkt_seg->next = NULL; /* Last segment of packet. */
+
+ /*
+ * Initialize Ethernet header.
+ */
+ ether_addr_copy(&peer_eth_addrs[fs->peer_addr],ð_hdr.d_addr);
+ ether_addr_copy(&ports[fs->tx_port].eth_addr, ð_hdr.s_addr);
+ eth_hdr.ether_type = rte_cpu_to_be_16(ETHER_TYPE_IPv4);
+
+ /*
+ * Copy headers in first packet segment(s).
+ */
+ copy_buf_to_pkt(ð_hdr, sizeof(eth_hdr), pkt, 0);
+ copy_buf_to_pkt(&pkt_ip_hdr, sizeof(pkt_ip_hdr), pkt,
+ sizeof(struct ether_hdr));
+ copy_buf_to_pkt(&pkt_udp_hdr, sizeof(pkt_udp_hdr), pkt,
+ sizeof(struct ether_hdr) +
+ sizeof(struct ipv4_hdr));
+
+ /*
+ * Complete first mbuf of packet and append it to the
+ * burst of packets to be transmitted.
+ */
+ pkt->nb_segs = nb_segs;
+ pkt->pkt_len = pkt_len;
+ 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;
+ }
+ nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_pkt);
+ 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)) {
+ if (verbose_level > 0 && fs->fwd_dropped == 0)
+ printf("port %d tx_queue %d - drop "
+ "(nb_pkt:%u - nb_tx:%u)=%u packets\n",
+ fs->tx_port, fs->tx_queue,
+ (unsigned) nb_pkt, (unsigned) nb_tx,
+ (unsigned) (nb_pkt - nb_tx));
+ fs->fwd_dropped += (nb_pkt - nb_tx);
+ 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
+}
+
+static void
+tx_only_begin(__attribute__((unused)) portid_t pi)
+{
+ uint16_t pkt_data_len;
+
+ pkt_data_len = (uint16_t) (tx_pkt_length - (sizeof(struct ether_hdr) +
+ sizeof(struct ipv4_hdr) +
+ sizeof(struct udp_hdr)));
+ setup_pkt_udp_ip_headers(&pkt_ip_hdr, &pkt_udp_hdr, pkt_data_len);
+}
+
+struct fwd_engine tx_only_engine = {
+ .fwd_mode_name = "txonly",
+ .port_fwd_begin = tx_only_begin,
+ .port_fwd_end = NULL,
+ .packet_fwd = pkt_burst_transmit,
+};
Code Review / deb_dpdk.git / blobdiff