X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=app%2Ftest-pmd%2Ftxonly.c;fp=app%2Ftest-pmd%2Ftxonly.c;h=b37cae574f06b22f5b915f06c8c123b9fa987483;hb=97f17497d162afdb82c8704bf097f0fee3724b2e;hp=0000000000000000000000000000000000000000;hpb=e04be89c2409570e0055b2cda60bd11395bb93b0;p=deb_dpdk.git

diff --git a/app/test-pmd/txonly.c b/app/test-pmd/txonly.c
new file mode 100644
index 00000000..b37cae57
--- /dev/null
+++ b/app/test-pmd/txonly.c
@@ -0,0 +1,327 @@
+/*-
+ *   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],&eth_hdr.d_addr);
+		ether_addr_copy(&ports[fs->tx_port].eth_addr, &eth_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(&eth_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,
+};