From d47388f19649d73b2b970dd8d436db72e9daf946 Mon Sep 17 00:00:00 2001 From: Cyril Chemparathy Date: Thu, 3 Apr 2014 10:30:15 -0700 Subject: [PATCH] app/testpmd: add macswap forwarding engine This commit adds a new forwarding mode, in which the source and destination MAC addresses of packets are swapped before forwarding according to the port-topology in effect. This has been designed for operation primarily with --port-topology=loopback. Signed-off-by: Cyril Chemparathy Acked-by: Thomas Monjalon --- app/test-pmd/Makefile | 1 + app/test-pmd/macswap.c | 148 +++++++++++++++++++++++++++++++++++++++++ app/test-pmd/testpmd.c | 1 + app/test-pmd/testpmd.h | 1 + 4 files changed, 151 insertions(+) create mode 100644 app/test-pmd/macswap.c diff --git a/app/test-pmd/Makefile b/app/test-pmd/Makefile index bec83ebed2..760f366a72 100644 --- a/app/test-pmd/Makefile +++ b/app/test-pmd/Makefile @@ -55,6 +55,7 @@ SRCS-$(CONFIG_RTE_TEST_PMD) += config.c SRCS-$(CONFIG_RTE_TEST_PMD) += iofwd.c SRCS-$(CONFIG_RTE_TEST_PMD) += macfwd.c SRCS-$(CONFIG_RTE_TEST_PMD) += macfwd-retry.c +SRCS-$(CONFIG_RTE_TEST_PMD) += macswap.c SRCS-$(CONFIG_RTE_TEST_PMD) += rxonly.c SRCS-$(CONFIG_RTE_TEST_PMD) += txonly.c SRCS-$(CONFIG_RTE_TEST_PMD) += csumonly.c diff --git a/app/test-pmd/macswap.c b/app/test-pmd/macswap.c new file mode 100644 index 0000000000..4ed6096e59 --- /dev/null +++ b/app/test-pmd/macswap.c @@ -0,0 +1,148 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2014 Tilera Corporation. 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 +#include +#include +#include +#include +#include +#include + +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "testpmd.h" + +/* + * MAC swap forwarding mode: Swap the source and the destination Ethernet + * addresses of packets before forwarding them. + */ +static void +pkt_burst_mac_swap(struct fwd_stream *fs) +{ + struct rte_mbuf *pkts_burst[MAX_PKT_BURST]; + struct rte_port *txp; + struct rte_mbuf *mb; + struct ether_hdr *eth_hdr; + struct ether_addr addr; + uint16_t nb_rx; + uint16_t nb_tx; + uint16_t i; +#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES + uint64_t start_tsc; + uint64_t end_tsc; + uint64_t core_cycles; +#endif + +#ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES + start_tsc = rte_rdtsc(); +#endif + + /* + * Receive a burst of packets and forward them. + */ + nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue, pkts_burst, + nb_pkt_per_burst); + if (unlikely(nb_rx == 0)) + return; + +#ifdef RTE_TEST_PMD_RECORD_BURST_STATS + fs->rx_burst_stats.pkt_burst_spread[nb_rx]++; +#endif + fs->rx_packets += nb_rx; + txp = &ports[fs->tx_port]; + for (i = 0; i < nb_rx; i++) { + mb = pkts_burst[i]; + eth_hdr = (struct ether_hdr *) mb->pkt.data; + + /* Swap dest and src mac addresses. */ + ether_addr_copy(ð_hdr->d_addr, &addr); + ether_addr_copy(ð_hdr->s_addr, ð_hdr->d_addr); + ether_addr_copy(&addr, ð_hdr->s_addr); + + mb->ol_flags = txp->tx_ol_flags; + mb->pkt.vlan_macip.f.l2_len = sizeof(struct ether_hdr); + mb->pkt.vlan_macip.f.l3_len = sizeof(struct ipv4_hdr); + mb->pkt.vlan_macip.f.vlan_tci = txp->tx_vlan_id; + } + nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_rx); + 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_rx)) { + fs->fwd_dropped += (nb_rx - nb_tx); + do { + rte_pktmbuf_free(pkts_burst[nb_tx]); + } while (++nb_tx < nb_rx); + } +#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 mac_swap_engine = { + .fwd_mode_name = "macswap", + .port_fwd_begin = NULL, + .port_fwd_end = NULL, + .packet_fwd = pkt_burst_mac_swap, +}; diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c index f643f1c459..d8020542d1 100644 --- a/app/test-pmd/testpmd.c +++ b/app/test-pmd/testpmd.c @@ -145,6 +145,7 @@ struct fwd_engine * fwd_engines[] = { &io_fwd_engine, &mac_fwd_engine, &mac_retry_fwd_engine, + &mac_swap_engine, &rx_only_engine, &tx_only_engine, &csum_fwd_engine, diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h index 0e4a35e0aa..50e8e77030 100644 --- a/app/test-pmd/testpmd.h +++ b/app/test-pmd/testpmd.h @@ -200,6 +200,7 @@ struct fwd_engine { extern struct fwd_engine io_fwd_engine; extern struct fwd_engine mac_fwd_engine; extern struct fwd_engine mac_retry_fwd_engine; +extern struct fwd_engine mac_swap_engine; extern struct fwd_engine rx_only_engine; extern struct fwd_engine tx_only_engine; extern struct fwd_engine csum_fwd_engine; -- 2.20.1