From 6aa497249172337378cfb6de616b1dfc63636379 Mon Sep 17 00:00:00 2001 From: Bruce Richardson Date: Tue, 11 Feb 2014 11:31:03 +0000 Subject: [PATCH] examples/l2fwd-ivshmem: import sample application This provides a new sample application which demonstrates how the ivshmem library and EAL capabilities can be used to create a zero-copy fast-path for packet communication between host machine and guest vm. Signed-off-by: Bruce Richardson --- examples/l2fwd-ivshmem/Makefile | 50 ++ examples/l2fwd-ivshmem/guest/Makefile | 50 ++ examples/l2fwd-ivshmem/guest/guest.c | 453 ++++++++++++ examples/l2fwd-ivshmem/host/Makefile | 50 ++ examples/l2fwd-ivshmem/host/host.c | 945 ++++++++++++++++++++++++ examples/l2fwd-ivshmem/include/common.h | 111 +++ 6 files changed, 1659 insertions(+) create mode 100644 examples/l2fwd-ivshmem/Makefile create mode 100644 examples/l2fwd-ivshmem/guest/Makefile create mode 100644 examples/l2fwd-ivshmem/guest/guest.c create mode 100644 examples/l2fwd-ivshmem/host/Makefile create mode 100644 examples/l2fwd-ivshmem/host/host.c create mode 100644 examples/l2fwd-ivshmem/include/common.h diff --git a/examples/l2fwd-ivshmem/Makefile b/examples/l2fwd-ivshmem/Makefile new file mode 100644 index 0000000000..7286b37447 --- /dev/null +++ b/examples/l2fwd-ivshmem/Makefile @@ -0,0 +1,50 @@ +# 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. + +ifeq ($(RTE_SDK),) +$(error "Please define RTE_SDK environment variable") +endif + +# Default target, can be overriden by command line or environment +RTE_TARGET ?= x86_64-ivshmem-linuxapp-gcc + +include $(RTE_SDK)/mk/rte.vars.mk +unexport RTE_SRCDIR RTE_OUTPUT RTE_EXTMK + +DIRS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += host guest + +.PHONY: all clean $(DIRS-y) + +all: $(DIRS-y) +clean: $(DIRS-y) + +$(DIRS-y): + $(MAKE) -C $@ $(MAKECMDGOALS) diff --git a/examples/l2fwd-ivshmem/guest/Makefile b/examples/l2fwd-ivshmem/guest/Makefile new file mode 100644 index 0000000000..04e13d7f40 --- /dev/null +++ b/examples/l2fwd-ivshmem/guest/Makefile @@ -0,0 +1,50 @@ +# BSD LICENSE +# +# Copyright(c) 2010-2014 Intel Corporation. All rights reserved. +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# * Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# * Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in +# the documentation and/or other materials provided with the +# distribution. +# * Neither the name of Intel Corporation nor the names of its +# contributors may be used to endorse or promote products derived +# from this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +ifeq ($(RTE_SDK),) +$(error "Please define RTE_SDK environment variable") +endif + +# Default target, can be overriden by command line or environment +RTE_TARGET ?= x86_64-ivshmem-linuxapp-gcc + +include $(RTE_SDK)/mk/rte.vars.mk + +# binary name +APP = guest + +# all source are stored in SRCS-y +SRCS-y := guest.c + +CFLAGS += -O3 +CFLAGS += $(WERROR_FLAGS) + +include $(RTE_SDK)/mk/rte.extapp.mk diff --git a/examples/l2fwd-ivshmem/guest/guest.c b/examples/l2fwd-ivshmem/guest/guest.c new file mode 100644 index 0000000000..adcbe79b92 --- /dev/null +++ b/examples/l2fwd-ivshmem/guest/guest.c @@ -0,0 +1,453 @@ +/*- + * 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 +#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 +#include +#include +#include +#include +#include +#include +#include + +#include "../include/common.h" + +#define MAX_RX_QUEUE_PER_LCORE 16 +#define MAX_TX_QUEUE_PER_PORT 16 +struct lcore_queue_conf { + unsigned n_rx_port; + unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE]; + struct mbuf_table rx_mbufs[RTE_MAX_ETHPORTS]; + struct vm_port_param * port_param[MAX_RX_QUEUE_PER_LCORE]; +} __rte_cache_aligned; +static struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE]; + +/* Print out statistics on packets dropped */ +static void +print_stats(void) +{ + uint64_t total_packets_dropped, total_packets_tx, total_packets_rx; + unsigned portid; + + total_packets_dropped = 0; + total_packets_tx = 0; + total_packets_rx = 0; + + const char clr[] = { 27, '[', '2', 'J', '\0' }; + const char topLeft[] = { 27, '[', '1', ';', '1', 'H','\0' }; + + /* Clear screen and move to top left */ + printf("%s%s", clr, topLeft); + + printf("\nPort statistics ===================================="); + + for (portid = 0; portid < ctrl->nb_ports; portid++) { + /* skip ports that are not enabled */ + printf("\nStatistics for port %u ------------------------------" + "\nPackets sent: %24"PRIu64 + "\nPackets received: %20"PRIu64 + "\nPackets dropped: %21"PRIu64, + portid, + ctrl->vm_ports[portid].stats.tx, + ctrl->vm_ports[portid].stats.rx, + ctrl->vm_ports[portid].stats.dropped); + + total_packets_dropped += ctrl->vm_ports[portid].stats.dropped; + total_packets_tx += ctrl->vm_ports[portid].stats.tx; + total_packets_rx += ctrl->vm_ports[portid].stats.rx; + } + printf("\nAggregate statistics ===============================" + "\nTotal packets sent: %18"PRIu64 + "\nTotal packets received: %14"PRIu64 + "\nTotal packets dropped: %15"PRIu64, + total_packets_tx, + total_packets_rx, + total_packets_dropped); + printf("\n====================================================\n"); +} + +/* display usage */ +static void +l2fwd_ivshmem_usage(const char *prgname) +{ + printf("%s [EAL options] -- [-q NQ -T PERIOD]\n" + " -q NQ: number of queue (=ports) per lcore (default is 1)\n" + " -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n", + prgname); +} + +static unsigned int +l2fwd_ivshmem_parse_nqueue(const char *q_arg) +{ + char *end = NULL; + unsigned long n; + + /* parse hexadecimal string */ + n = strtoul(q_arg, &end, 10); + if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0')) + return 0; + if (n == 0) + return 0; + if (n >= MAX_RX_QUEUE_PER_LCORE) + return 0; + + return n; +} + +static int +l2fwd_ivshmem_parse_timer_period(const char *q_arg) +{ + char *end = NULL; + int n; + + /* parse number string */ + n = strtol(q_arg, &end, 10); + if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0')) + return -1; + if (n >= MAX_TIMER_PERIOD) + return -1; + + return n; +} + +/* Parse the argument given in the command line of the application */ +static int +l2fwd_ivshmem_parse_args(int argc, char **argv) +{ + int opt, ret; + char **argvopt; + int option_index; + char *prgname = argv[0]; + static struct option lgopts[] = { + {NULL, 0, 0, 0} + }; + + argvopt = argv; + + while ((opt = getopt_long(argc, argvopt, "q:p:T:", + lgopts, &option_index)) != EOF) { + + switch (opt) { + + /* nqueue */ + case 'q': + l2fwd_ivshmem_rx_queue_per_lcore = l2fwd_ivshmem_parse_nqueue(optarg); + if (l2fwd_ivshmem_rx_queue_per_lcore == 0) { + printf("invalid queue number\n"); + l2fwd_ivshmem_usage(prgname); + return -1; + } + break; + + /* timer period */ + case 'T': + timer_period = l2fwd_ivshmem_parse_timer_period(optarg) * 1000 * TIMER_MILLISECOND; + if (timer_period < 0) { + printf("invalid timer period\n"); + l2fwd_ivshmem_usage(prgname); + return -1; + } + break; + + /* long options */ + case 0: + l2fwd_ivshmem_usage(prgname); + return -1; + + default: + l2fwd_ivshmem_usage(prgname); + return -1; + } + } + + if (optind >= 0) + argv[optind-1] = prgname; + + ret = optind-1; + optind = 0; /* reset getopt lib */ + return ret; +} + +/* + * this loop is getting packets from RX rings of each port, and puts them + * into TX rings of destination ports. + */ +static void +fwd_loop(void) +{ + + struct rte_mbuf *pkts_burst[MAX_PKT_BURST]; + struct rte_mbuf **m_table; + struct rte_mbuf *m; + struct rte_ring *rx, *tx; + unsigned lcore_id, len; + uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc; + unsigned i, j, portid, nb_rx; + struct lcore_queue_conf *qconf; + struct ether_hdr *eth; + void *tmp; + + prev_tsc = 0; + timer_tsc = 0; + + lcore_id = rte_lcore_id(); + qconf = &lcore_queue_conf[lcore_id]; + + if (qconf->n_rx_port == 0) { + RTE_LOG(INFO, L2FWD_IVSHMEM, "lcore %u has nothing to do\n", lcore_id); + return; + } + + RTE_LOG(INFO, L2FWD_IVSHMEM, "entering main loop on lcore %u\n", lcore_id); + + for (i = 0; i < qconf->n_rx_port; i++) { + portid = qconf->rx_port_list[i]; + RTE_LOG(INFO, L2FWD_IVSHMEM, " -- lcoreid=%u portid=%u\n", lcore_id, + portid); + } + + while (ctrl->state == STATE_FWD) { + cur_tsc = rte_rdtsc(); + + diff_tsc = cur_tsc - prev_tsc; + + /* + * Read packet from RX queues and send it to TX queues + */ + for (i = 0; i < qconf->n_rx_port; i++) { + + portid = qconf->rx_port_list[i]; + + len = qconf->rx_mbufs[portid].len; + + rx = ctrl->vm_ports[portid].rx_ring; + tx = ctrl->vm_ports[portid].dst->tx_ring; + + m_table = qconf->rx_mbufs[portid].m_table; + + /* if we have something in the queue, try and transmit it down */ + if (len != 0) { + + /* if we succeed in sending the packets down, mark queue as free */ + if (rte_ring_enqueue_bulk(tx, (void**) m_table, len) == 0) { + ctrl->vm_ports[portid].stats.tx += len; + qconf->rx_mbufs[portid].len = 0; + len = 0; + } + } + + nb_rx = rte_ring_count(rx); + + nb_rx = RTE_MIN(nb_rx, (unsigned) MAX_PKT_BURST); + + if (nb_rx == 0) + continue; + + /* if we can get packets into the m_table */ + if (nb_rx < (RTE_DIM(qconf->rx_mbufs[portid].m_table) - len)) { + + /* this situation cannot exist, so if we fail to dequeue, that + * means something went horribly wrong, hence the failure. */ + if (rte_ring_dequeue_bulk(rx, (void**) pkts_burst, nb_rx) < 0) { + ctrl->state = STATE_FAIL; + return; + } + + ctrl->vm_ports[portid].stats.rx += nb_rx; + + /* put packets into the queue */ + for (j = 0; j < nb_rx; j++) { + m = pkts_burst[j]; + + rte_prefetch0(rte_pktmbuf_mtod(m, void *)); + + m_table[len + j] = m; + + eth = rte_pktmbuf_mtod(m, struct ether_hdr *); + + /* 02:00:00:00:00:xx */ + tmp = ð->d_addr.addr_bytes[0]; + *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)portid << 40); + + /* src addr */ + ether_addr_copy(&ctrl->vm_ports[portid].dst->ethaddr, + ð->s_addr); + } + qconf->rx_mbufs[portid].len += nb_rx; + + } + + } + + /* if timer is enabled */ + if (timer_period > 0) { + + /* advance the timer */ + timer_tsc += diff_tsc; + + /* if timer has reached its timeout */ + if (unlikely(timer_tsc >= (uint64_t) timer_period)) { + + /* do this only on master core */ + if (lcore_id == rte_get_master_lcore()) { + print_stats(); + /* reset the timer */ + timer_tsc = 0; + } + } + } + + prev_tsc = cur_tsc; + } +} + +static int +l2fwd_ivshmem_launch_one_lcore(__attribute__((unused)) void *dummy) +{ + fwd_loop(); + return 0; +} + +int +main(int argc, char **argv) +{ + struct lcore_queue_conf *qconf; + const struct rte_memzone * mz; + int ret; + uint8_t portid; + unsigned rx_lcore_id, lcore_id; + + /* init EAL */ + ret = rte_eal_init(argc, argv); + if (ret < 0) + rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n"); + argc -= ret; + argv += ret; + + /* parse application arguments (after the EAL ones) */ + ret = l2fwd_ivshmem_parse_args(argc, argv); + if (ret < 0) + rte_exit(EXIT_FAILURE, "Invalid l2fwd-ivshmem arguments\n"); + + /* find control structure */ + mz = rte_memzone_lookup(CTRL_MZ_NAME); + if (mz == NULL) + rte_exit(EXIT_FAILURE, "Cannot find control memzone\n"); + + ctrl = (struct ivshmem_ctrl*) mz->addr; + + /* lock the ctrl so that we don't have conflicts with anything else */ + rte_spinlock_lock(&ctrl->lock); + + if (ctrl->state == STATE_FWD) + rte_exit(EXIT_FAILURE, "Forwarding already started!\n"); + + rx_lcore_id = 0; + qconf = NULL; + + /* Initialize the port/queue configuration of each logical core */ + for (portid = 0; portid < ctrl->nb_ports; portid++) { + + /* get the lcore_id for this port */ + while (rte_lcore_is_enabled(rx_lcore_id) == 0 || + lcore_queue_conf[rx_lcore_id].n_rx_port == + l2fwd_ivshmem_rx_queue_per_lcore) { + rx_lcore_id++; + if (rx_lcore_id >= RTE_MAX_LCORE) + rte_exit(EXIT_FAILURE, "Not enough cores\n"); + } + + if (qconf != &lcore_queue_conf[rx_lcore_id]) + /* Assigned a new logical core in the loop above. */ + qconf = &lcore_queue_conf[rx_lcore_id]; + + qconf->rx_port_list[qconf->n_rx_port] = portid; + qconf->port_param[qconf->n_rx_port] = &ctrl->vm_ports[portid]; + qconf->n_rx_port++; + + printf("Lcore %u: RX port %u\n", rx_lcore_id, (unsigned) portid); + } + + sigsetup(); + + /* indicate that we are ready to forward */ + ctrl->state = STATE_FWD; + + /* unlock */ + rte_spinlock_unlock(&ctrl->lock); + + /* launch per-lcore init on every lcore */ + rte_eal_mp_remote_launch(l2fwd_ivshmem_launch_one_lcore, NULL, CALL_MASTER); + RTE_LCORE_FOREACH_SLAVE(lcore_id) { + if (rte_eal_wait_lcore(lcore_id) < 0) + return -1; + } + + return 0; +} diff --git a/examples/l2fwd-ivshmem/host/Makefile b/examples/l2fwd-ivshmem/host/Makefile new file mode 100644 index 0000000000..a7e75258ae --- /dev/null +++ b/examples/l2fwd-ivshmem/host/Makefile @@ -0,0 +1,50 @@ +# 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. + +ifeq ($(RTE_SDK),) +$(error "Please define RTE_SDK environment variable") +endif + +# Default target, can be overriden by command line or environment +RTE_TARGET ?= x86_64-ivshmem-linuxapp-gcc + +include $(RTE_SDK)/mk/rte.vars.mk + +# binary name +APP = host + +# all source are stored in SRCS-y +SRCS-y := host.c + +CFLAGS += -O3 +CFLAGS += $(WERROR_FLAGS) + +include $(RTE_SDK)/mk/rte.extapp.mk diff --git a/examples/l2fwd-ivshmem/host/host.c b/examples/l2fwd-ivshmem/host/host.c new file mode 100644 index 0000000000..6aaa082bab --- /dev/null +++ b/examples/l2fwd-ivshmem/host/host.c @@ -0,0 +1,945 @@ +/*- + * 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 +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "../include/common.h" + +/* + * Configurable number of RX/TX ring descriptors + */ +#define RTE_TEST_RX_DESC_DEFAULT 128 +#define RTE_TEST_TX_DESC_DEFAULT 512 +static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT; +static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT; + +/* + * RX and TX Prefetch, Host, and Write-back threshold values should be + * carefully set for optimal performance. Consult the network + * controller's datasheet and supporting DPDK documentation for guidance + * on how these parameters should be set. + */ +#define RX_PTHRESH 8 /**< Default values of RX prefetch threshold reg. */ +#define RX_HTHRESH 8 /**< Default values of RX host threshold reg. */ +#define RX_WTHRESH 4 /**< Default values of RX write-back threshold reg. */ + +/* + * These default values are optimized for use with the Intel(R) 82599 10 GbE + * Controller and the DPDK ixgbe PMD. Consider using other values for other + * network controllers and/or network drivers. + */ +#define TX_PTHRESH 36 /**< Default values of TX prefetch threshold reg. */ +#define TX_HTHRESH 0 /**< Default values of TX host threshold reg. */ +#define TX_WTHRESH 0 /**< Default values of TX write-back threshold reg. */ + +#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */ + +/* mask of enabled ports */ +static uint32_t l2fwd_ivshmem_enabled_port_mask = 0; + +static struct ether_addr l2fwd_ivshmem_ports_eth_addr[RTE_MAX_ETHPORTS]; + +#define NB_MBUF 8192 +#define MBUF_SIZE (2048 + sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM) + +#define MAX_RX_QUEUE_PER_LCORE 16 +#define MAX_TX_QUEUE_PER_PORT 16 +struct lcore_queue_conf { + unsigned n_rx_port; + unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE]; + struct vm_port_param * port_param[MAX_RX_QUEUE_PER_LCORE]; + struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS]; + struct mbuf_table rx_mbufs[RTE_MAX_ETHPORTS]; +} __rte_cache_aligned; +static struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE]; + +static const struct rte_eth_conf port_conf = { + .rxmode = { + .split_hdr_size = 0, + .header_split = 0, /**< Header Split disabled */ + .hw_ip_checksum = 0, /**< IP checksum offload disabled */ + .hw_vlan_filter = 0, /**< VLAN filtering disabled */ + .jumbo_frame = 0, /**< Jumbo Frame Support disabled */ + .hw_strip_crc = 0, /**< CRC stripped by hardware */ + }, + .txmode = { + .mq_mode = ETH_MQ_TX_NONE, + }, +}; + +static const struct rte_eth_rxconf rx_conf = { + .rx_thresh = { + .pthresh = RX_PTHRESH, + .hthresh = RX_HTHRESH, + .wthresh = RX_WTHRESH, + }, +}; + +static const struct rte_eth_txconf tx_conf = { + .tx_thresh = { + .pthresh = TX_PTHRESH, + .hthresh = TX_HTHRESH, + .wthresh = TX_WTHRESH, + }, + .tx_free_thresh = 0, /* Use PMD default values */ + .tx_rs_thresh = 0, /* Use PMD default values */ +}; + +#define METADATA_NAME "l2fwd_ivshmem" +#define CMDLINE_OPT_FWD_CONF "fwd-conf" + +#define QEMU_CMD_FMT "/tmp/ivshmem_qemu_cmdline_%s" + +struct port_statistics port_statistics[RTE_MAX_ETHPORTS]; + +struct rte_mempool * l2fwd_ivshmem_pktmbuf_pool = NULL; + +/* Print out statistics on packets dropped */ +static void +print_stats(void) +{ + uint64_t total_packets_dropped, total_packets_tx, total_packets_rx; + uint64_t total_vm_packets_dropped, total_vm_packets_tx, total_vm_packets_rx; + unsigned portid; + + total_packets_dropped = 0; + total_packets_tx = 0; + total_packets_rx = 0; + total_vm_packets_tx = 0; + total_vm_packets_rx = 0; + + const char clr[] = { 27, '[', '2', 'J', '\0' }; + const char topLeft[] = { 27, '[', '1', ';', '1', 'H','\0' }; + + /* Clear screen and move to top left */ + printf("%s%s", clr, topLeft); + + printf("\nPort statistics ===================================="); + + for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) { + /* skip disabled ports */ + if ((l2fwd_ivshmem_enabled_port_mask & (1 << portid)) == 0) + continue; + printf("\nStatistics for port %u ------------------------------" + "\nPackets sent: %24"PRIu64 + "\nPackets received: %20"PRIu64 + "\nPackets dropped: %21"PRIu64, + portid, + port_statistics[portid].tx, + port_statistics[portid].rx, + port_statistics[portid].dropped); + + total_packets_dropped += port_statistics[portid].dropped; + total_packets_tx += port_statistics[portid].tx; + total_packets_rx += port_statistics[portid].rx; + } + + printf("\nVM statistics ======================================"); + for (portid = 0; portid < ctrl->nb_ports; portid++) { + printf("\nStatistics for port %u ------------------------------" + "\nPackets sent: %24"PRIu64 + "\nPackets received: %20"PRIu64, + portid, + ctrl->vm_ports[portid].stats.tx, + ctrl->vm_ports[portid].stats.rx); + + total_vm_packets_dropped += ctrl->vm_ports[portid].stats.dropped; + total_vm_packets_tx += ctrl->vm_ports[portid].stats.tx; + total_vm_packets_rx += ctrl->vm_ports[portid].stats.rx; + } + printf("\nAggregate statistics ===============================" + "\nTotal packets sent: %18"PRIu64 + "\nTotal packets received: %14"PRIu64 + "\nTotal packets dropped: %15"PRIu64 + "\nTotal VM packets sent: %15"PRIu64 + "\nTotal VM packets received: %11"PRIu64, + total_packets_tx, + total_packets_rx, + total_packets_dropped, + total_vm_packets_tx, + total_vm_packets_rx); + printf("\n====================================================\n"); +} + +static int +print_to_file(const char *cmdline, const char *config_name) +{ + FILE *file; + char path[PATH_MAX]; + + rte_snprintf(path, sizeof(path), QEMU_CMD_FMT, config_name); + file = fopen(path, "w"); + if (file == NULL) { + RTE_LOG(ERR, L2FWD_IVSHMEM, "Could not open '%s' \n", path); + return -1; + } + + RTE_LOG(DEBUG, L2FWD_IVSHMEM, "QEMU command line for config '%s': %s \n", + config_name, cmdline); + + fprintf(file, "%s\n", cmdline); + fclose(file); + return 0; +} + +static int +generate_ivshmem_cmdline(const char *config_name) +{ + char cmdline[PATH_MAX]; + if (rte_ivshmem_metadata_cmdline_generate(cmdline, sizeof(cmdline), + config_name) < 0) + return -1; + + if (print_to_file(cmdline, config_name) < 0) + return -1; + + rte_ivshmem_metadata_dump(config_name); + return 0; +} + +/* display usage */ +static void +l2fwd_ivshmem_usage(const char *prgname) +{ + printf("%s [EAL options] -- -p PORTMASK [-q NQ -T PERIOD]\n" + " -p PORTMASK: hexadecimal bitmask of ports to configure\n" + " -q NQ: number of queue (=ports) per lcore (default is 1)\n" + " -T PERIOD: statistics will be refreshed each PERIOD seconds " + "(0 to disable, 10 default, 86400 maximum)\n", + prgname); +} + +static unsigned int +l2fwd_ivshmem_parse_nqueue(const char *q_arg) +{ + char *end = NULL; + unsigned long n; + + /* parse hexadecimal string */ + n = strtoul(q_arg, &end, 10); + if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0')) + return 0; + if (n == 0) + return 0; + if (n >= MAX_RX_QUEUE_PER_LCORE) + return 0; + + return n; +} + +static int +l2fwd_ivshmem_parse_portmask(const char *portmask) +{ + char *end = NULL; + unsigned long pm; + + /* parse hexadecimal string */ + pm = strtoul(portmask, &end, 16); + if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0')) + return -1; + + if (pm == 0) + return -1; + + return pm; +} + +static int +l2fwd_ivshmem_parse_timer_period(const char *q_arg) +{ + char *end = NULL; + int n; + + /* parse number string */ + n = strtol(q_arg, &end, 10); + if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0')) + return -1; + if (n >= MAX_TIMER_PERIOD) + return -1; + + return n; +} + +/* Parse the argument given in the command line of the application */ +static int +l2fwd_ivshmem_parse_args(int argc, char **argv) +{ + int opt, ret; + char **argvopt; + int option_index; + char *prgname = argv[0]; + static struct option lgopts[] = { + {CMDLINE_OPT_FWD_CONF, 1, 0, 0}, + {NULL, 0, 0, 0} + }; + + argvopt = argv; + + while ((opt = getopt_long(argc, argvopt, "q:p:T:", + lgopts, &option_index)) != EOF) { + + switch (opt) { + /* portmask */ + case 'p': + l2fwd_ivshmem_enabled_port_mask = l2fwd_ivshmem_parse_portmask(optarg); + if (l2fwd_ivshmem_enabled_port_mask == 0) { + printf("invalid portmask\n"); + l2fwd_ivshmem_usage(prgname); + return -1; + } + break; + + /* nqueue */ + case 'q': + l2fwd_ivshmem_rx_queue_per_lcore = l2fwd_ivshmem_parse_nqueue(optarg); + if (l2fwd_ivshmem_rx_queue_per_lcore == 0) { + printf("invalid queue number\n"); + l2fwd_ivshmem_usage(prgname); + return -1; + } + break; + + /* timer period */ + case 'T': + timer_period = l2fwd_ivshmem_parse_timer_period(optarg) * 1000 * TIMER_MILLISECOND; + if (timer_period < 0) { + printf("invalid timer period\n"); + l2fwd_ivshmem_usage(prgname); + return -1; + } + break; + + /* long options */ + case 0: + l2fwd_ivshmem_usage(prgname); + return -1; + + default: + l2fwd_ivshmem_usage(prgname); + return -1; + } + } + + if (optind >= 0) + argv[optind-1] = prgname; + + ret = optind-1; + optind = 0; /* reset getopt lib */ + return ret; +} + +/* Check the link status of all ports in up to 9s, and print them finally */ +static void +check_all_ports_link_status(uint8_t port_num, uint32_t port_mask) +{ +#define CHECK_INTERVAL 100 /* 100ms */ +#define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */ + uint8_t portid, count, all_ports_up, print_flag = 0; + struct rte_eth_link link; + + printf("\nChecking link status"); + fflush(stdout); + for (count = 0; count <= MAX_CHECK_TIME; count++) { + all_ports_up = 1; + for (portid = 0; portid < port_num; portid++) { + if ((port_mask & (1 << portid)) == 0) + continue; + memset(&link, 0, sizeof(link)); + rte_eth_link_get_nowait(portid, &link); + /* print link status if flag set */ + if (print_flag == 1) { + if (link.link_status) + printf("Port %d Link Up - speed %u " + "Mbps - %s\n", (uint8_t)portid, + (unsigned)link.link_speed, + (link.link_duplex == ETH_LINK_FULL_DUPLEX) ? + ("full-duplex") : ("half-duplex\n")); + else + printf("Port %d Link Down\n", + (uint8_t)portid); + continue; + } + /* clear all_ports_up flag if any link down */ + if (link.link_status == 0) { + all_ports_up = 0; + break; + } + } + /* after finally printing all link status, get out */ + if (print_flag == 1) + break; + + if (all_ports_up == 0) { + printf("."); + fflush(stdout); + rte_delay_ms(CHECK_INTERVAL); + } + + /* set the print_flag if all ports up or timeout */ + if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) { + print_flag = 1; + printf("done\n"); + } + } +} + +/* Send the burst of packets on an output interface */ +static int +l2fwd_ivshmem_send_burst(struct lcore_queue_conf *qconf, unsigned n, uint8_t port) +{ + struct rte_mbuf **m_table; + unsigned ret; + unsigned queueid =0; + + m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table; + + ret = rte_eth_tx_burst(port, (uint16_t) queueid, m_table, (uint16_t) n); + port_statistics[port].tx += ret; + if (unlikely(ret < n)) { + port_statistics[port].dropped += (n - ret); + do { + rte_pktmbuf_free(m_table[ret]); + } while (++ret < n); + } + + return 0; +} + +/* Enqueue packets for TX and prepare them to be sent on the network */ +static int +l2fwd_ivshmem_send_packet(struct rte_mbuf *m, uint8_t port) +{ + unsigned lcore_id, len; + struct lcore_queue_conf *qconf; + + lcore_id = rte_lcore_id(); + + qconf = &lcore_queue_conf[lcore_id]; + len = qconf->tx_mbufs[port].len; + qconf->tx_mbufs[port].m_table[len] = m; + len++; + + /* enough pkts to be sent */ + if (unlikely(len == MAX_PKT_BURST)) { + l2fwd_ivshmem_send_burst(qconf, MAX_PKT_BURST, port); + len = 0; + } + + qconf->tx_mbufs[port].len = len; + return 0; +} + +static int +l2fwd_ivshmem_receive_burst(struct lcore_queue_conf *qconf, unsigned portid, + unsigned vm_port) +{ + struct rte_mbuf ** m; + struct rte_ring * rx; + unsigned len, pkt_idx; + + m = qconf->rx_mbufs[portid].m_table; + len = qconf->rx_mbufs[portid].len; + rx = qconf->port_param[vm_port]->rx_ring; + + /* if enqueueing failed, ring is probably full, so drop the packets */ + if (rte_ring_enqueue_bulk(rx, (void**) m, len) < 0) { + port_statistics[portid].dropped += len; + + pkt_idx = 0; + do { + rte_pktmbuf_free(m[pkt_idx]); + } while (++pkt_idx < len); + } + else + /* increment rx stats by however many packets we managed to receive */ + port_statistics[portid].rx += len; + + return 0; +} + +/* Enqueue packets for RX and prepare them to be sent to VM */ +static int +l2fwd_ivshmem_receive_packets(struct rte_mbuf ** m, unsigned n, unsigned portid, + unsigned vm_port) +{ + unsigned lcore_id, len, pkt_idx; + struct lcore_queue_conf *qconf; + + lcore_id = rte_lcore_id(); + + qconf = &lcore_queue_conf[lcore_id]; + + len = qconf->rx_mbufs[portid].len; + pkt_idx = 0; + + /* enqueue packets */ + while (pkt_idx < n && len < MAX_PKT_BURST * 2) { + qconf->rx_mbufs[portid].m_table[len++] = m[pkt_idx++]; + } + + /* increment queue len by however many packets we managed to receive */ + qconf->rx_mbufs[portid].len += pkt_idx; + + /* drop the unreceived packets */ + if (unlikely(pkt_idx < n)) { + port_statistics[portid].dropped += n - pkt_idx; + do { + rte_pktmbuf_free(m[pkt_idx]); + } while (++pkt_idx < n); + } + + /* drain the queue halfway through the maximum capacity */ + if (unlikely(qconf->rx_mbufs[portid].len >= MAX_PKT_BURST)) + l2fwd_ivshmem_receive_burst(qconf, portid, vm_port); + + return 0; +} + +/* loop for host forwarding mode. + * the data flow is as follows: + * 1) get packets from TX queue and send it out from a given port + * 2) RX packets from given port and enqueue them on RX ring + * 3) dequeue packets from TX ring and put them on TX queue for a given port + */ +static void +fwd_loop(void) +{ + struct rte_mbuf *pkts_burst[MAX_PKT_BURST * 2]; + struct rte_mbuf *m; + unsigned lcore_id; + uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc; + unsigned i, j, portid, nb_rx; + struct lcore_queue_conf *qconf; + struct rte_ring *tx; + const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US; + + prev_tsc = 0; + timer_tsc = 0; + + lcore_id = rte_lcore_id(); + qconf = &lcore_queue_conf[lcore_id]; + + if (qconf->n_rx_port == 0) { + RTE_LOG(INFO, L2FWD_IVSHMEM, "lcore %u has nothing to do\n", lcore_id); + return; + } + + RTE_LOG(INFO, L2FWD_IVSHMEM, "entering main loop on lcore %u\n", lcore_id); + + for (i = 0; i < qconf->n_rx_port; i++) { + + portid = qconf->rx_port_list[i]; + RTE_LOG(INFO, L2FWD_IVSHMEM, " -- lcoreid=%u portid=%u\n", lcore_id, + portid); + } + + while (ctrl->state == STATE_FWD) { + + cur_tsc = rte_rdtsc(); + + /* + * Burst queue drain + */ + diff_tsc = cur_tsc - prev_tsc; + if (unlikely(diff_tsc > drain_tsc)) { + + /* + * TX + */ + for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) { + if (qconf->tx_mbufs[portid].len == 0) + continue; + l2fwd_ivshmem_send_burst(qconf, + qconf->tx_mbufs[portid].len, + (uint8_t) portid); + qconf->tx_mbufs[portid].len = 0; + } + + /* + * RX + */ + for (i = 0; i < qconf->n_rx_port; i++) { + portid = qconf->rx_port_list[i]; + if (qconf->rx_mbufs[portid].len == 0) + continue; + l2fwd_ivshmem_receive_burst(qconf, portid, i); + qconf->rx_mbufs[portid].len = 0; + } + + /* if timer is enabled */ + if (timer_period > 0) { + + /* advance the timer */ + timer_tsc += diff_tsc; + + /* if timer has reached its timeout */ + if (unlikely(timer_tsc >= (uint64_t) timer_period)) { + + /* do this only on master core */ + if (lcore_id == rte_get_master_lcore()) { + print_stats(); + /* reset the timer */ + timer_tsc = 0; + } + } + } + + prev_tsc = cur_tsc; + } + + /* + * packet RX and forwarding + */ + for (i = 0; i < qconf->n_rx_port; i++) { + + /* RX packets from port and put them on RX ring */ + portid = qconf->rx_port_list[i]; + nb_rx = rte_eth_rx_burst((uint8_t) portid, 0, + pkts_burst, MAX_PKT_BURST); + + if (nb_rx != 0) + l2fwd_ivshmem_receive_packets(pkts_burst, nb_rx, portid, i); + + /* dequeue packets from TX ring and send them to TX queue */ + tx = qconf->port_param[i]->tx_ring; + + nb_rx = rte_ring_count(tx); + + nb_rx = RTE_MIN(nb_rx, (unsigned) MAX_PKT_BURST); + + if (nb_rx == 0) + continue; + + /* should not happen */ + if (unlikely(rte_ring_dequeue_bulk(tx, (void**) pkts_burst, nb_rx) < 0)) { + ctrl->state = STATE_FAIL; + return; + } + + for (j = 0; j < nb_rx; j++) { + m = pkts_burst[j]; + l2fwd_ivshmem_send_packet(m, portid); + } + } + } +} + +static int +l2fwd_ivshmem_launch_one_lcore(__attribute__((unused)) void *dummy) +{ + fwd_loop(); + return 0; +} + +int main(int argc, char **argv) +{ + char name[RTE_RING_NAMESIZE]; + struct rte_ring *r; + struct lcore_queue_conf *qconf; + struct rte_eth_dev_info dev_info; + uint8_t portid, port_nr; + uint8_t nb_ports, nb_ports_available; + uint8_t nb_ports_in_mask; + int ret; + unsigned lcore_id, rx_lcore_id; + + /* init EAL */ + ret = rte_eal_init(argc, argv); + if (ret < 0) + rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n"); + argc -= ret; + argv += ret; + + /* parse application arguments (after the EAL ones) */ + ret = l2fwd_ivshmem_parse_args(argc, argv); + if (ret < 0) + rte_exit(EXIT_FAILURE, "Invalid l2fwd-ivshmem arguments\n"); + + /* create a shared mbuf pool */ + l2fwd_ivshmem_pktmbuf_pool = + rte_mempool_create(MBUF_MP_NAME, NB_MBUF, + MBUF_SIZE, 32, + sizeof(struct rte_pktmbuf_pool_private), + rte_pktmbuf_pool_init, NULL, + rte_pktmbuf_init, NULL, + rte_socket_id(), 0); + if (l2fwd_ivshmem_pktmbuf_pool == NULL) + rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n"); + + /* init driver(s) */ + if (rte_pmd_init_all() < 0) + rte_exit(EXIT_FAILURE, "Cannot init pmd\n"); + + if (rte_eal_pci_probe() < 0) + rte_exit(EXIT_FAILURE, "Cannot probe PCI\n"); + + nb_ports = rte_eth_dev_count(); + if (nb_ports == 0) + rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n"); + + if (nb_ports > RTE_MAX_ETHPORTS) + nb_ports = RTE_MAX_ETHPORTS; + + /* + * reserve memzone to communicate with VMs - we cannot use rte_malloc here + * because while it is technically possible, it is a very bad idea to share + * the heap between two primary processes. + */ + ctrl_mz = rte_memzone_reserve(CTRL_MZ_NAME, sizeof(struct ivshmem_ctrl), + SOCKET_ID_ANY, 0); + if (ctrl_mz == NULL) + rte_exit(EXIT_FAILURE, "Cannot reserve control memzone\n"); + ctrl = (struct ivshmem_ctrl*) ctrl_mz->addr; + + memset(ctrl, 0, sizeof(struct ivshmem_ctrl)); + + /* + * Each port is assigned an output port. + */ + nb_ports_in_mask = 0; + for (portid = 0; portid < nb_ports; portid++) { + /* skip ports that are not enabled */ + if ((l2fwd_ivshmem_enabled_port_mask & (1 << portid)) == 0) + continue; + if (portid % 2) { + ctrl->vm_ports[nb_ports_in_mask].dst = &ctrl->vm_ports[nb_ports_in_mask-1]; + ctrl->vm_ports[nb_ports_in_mask-1].dst = &ctrl->vm_ports[nb_ports_in_mask]; + } + + nb_ports_in_mask++; + + rte_eth_dev_info_get(portid, &dev_info); + } + if (nb_ports_in_mask % 2) { + printf("Notice: odd number of ports in portmask.\n"); + ctrl->vm_ports[nb_ports_in_mask-1].dst = + &ctrl->vm_ports[nb_ports_in_mask-1]; + } + + rx_lcore_id = 0; + qconf = NULL; + + printf("Initializing ports configuration...\n"); + + nb_ports_available = nb_ports; + + /* Initialise each port */ + for (portid = 0; portid < nb_ports; portid++) { + + /* skip ports that are not enabled */ + if ((l2fwd_ivshmem_enabled_port_mask & (1 << portid)) == 0) { + printf("Skipping disabled port %u\n", (unsigned) portid); + nb_ports_available--; + continue; + } + + /* init port */ + printf("Initializing port %u... ", (unsigned) portid); + fflush(stdout); + ret = rte_eth_dev_configure(portid, 1, 1, &port_conf); + if (ret < 0) + rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n", + ret, (unsigned) portid); + + rte_eth_macaddr_get(portid,&l2fwd_ivshmem_ports_eth_addr[portid]); + + /* init one RX queue */ + fflush(stdout); + ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd, + rte_eth_dev_socket_id(portid), &rx_conf, + l2fwd_ivshmem_pktmbuf_pool); + if (ret < 0) + rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n", + ret, (unsigned) portid); + + /* init one TX queue on each port */ + fflush(stdout); + ret = rte_eth_tx_queue_setup(portid, 0, nb_txd, + rte_eth_dev_socket_id(portid), &tx_conf); + if (ret < 0) + rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n", + ret, (unsigned) portid); + + /* Start device */ + ret = rte_eth_dev_start(portid); + if (ret < 0) + rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n", + ret, (unsigned) portid); + + printf("done: \n"); + + rte_eth_promiscuous_enable(portid); + + printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n", + (unsigned) portid, + l2fwd_ivshmem_ports_eth_addr[portid].addr_bytes[0], + l2fwd_ivshmem_ports_eth_addr[portid].addr_bytes[1], + l2fwd_ivshmem_ports_eth_addr[portid].addr_bytes[2], + l2fwd_ivshmem_ports_eth_addr[portid].addr_bytes[3], + l2fwd_ivshmem_ports_eth_addr[portid].addr_bytes[4], + l2fwd_ivshmem_ports_eth_addr[portid].addr_bytes[5]); + + /* initialize port stats */ + memset(&port_statistics, 0, sizeof(port_statistics)); + } + + if (!nb_ports_available) { + rte_exit(EXIT_FAILURE, + "All available ports are disabled. Please set portmask.\n"); + } + port_nr = 0; + + /* Initialize the port/queue configuration of each logical core */ + for (portid = 0; portid < nb_ports; portid++) { + if ((l2fwd_ivshmem_enabled_port_mask & (1 << portid)) == 0) + continue; + + /* get the lcore_id for this port */ + while (rte_lcore_is_enabled(rx_lcore_id) == 0 || + lcore_queue_conf[rx_lcore_id].n_rx_port == + l2fwd_ivshmem_rx_queue_per_lcore) { + rx_lcore_id++; + if (rx_lcore_id >= RTE_MAX_LCORE) + rte_exit(EXIT_FAILURE, "Not enough cores\n"); + } + + if (qconf != &lcore_queue_conf[rx_lcore_id]) + /* Assigned a new logical core in the loop above. */ + qconf = &lcore_queue_conf[rx_lcore_id]; + + + rte_eth_macaddr_get(portid, &ctrl->vm_ports[port_nr].ethaddr); + + qconf->rx_port_list[qconf->n_rx_port] = portid; + qconf->port_param[qconf->n_rx_port] = &ctrl->vm_ports[port_nr]; + qconf->n_rx_port++; + port_nr++; + printf("Lcore %u: RX port %u\n", rx_lcore_id, (unsigned) portid); + } + + check_all_ports_link_status(nb_ports_available, l2fwd_ivshmem_enabled_port_mask); + + /* create rings for each VM port (several ports can be on the same VM). + * note that we store the pointers in ctrl - that way, they are the same + * and valid across all VMs because ctrl is also in DPDK memory */ + for (portid = 0; portid < nb_ports_available; portid++) { + + /* RX ring. SP/SC because it's only used by host and a single VM */ + rte_snprintf(name, sizeof(name), "%s%i", RX_RING_PREFIX, portid); + r = rte_ring_create(name, NB_MBUF, + SOCKET_ID_ANY, RING_F_SP_ENQ | RING_F_SC_DEQ); + if (r == NULL) + rte_exit(EXIT_FAILURE, "Cannot create ring %s\n", name); + + ctrl->vm_ports[portid].rx_ring = r; + + /* TX ring. SP/SC because it's only used by host and a single VM */ + rte_snprintf(name, sizeof(name), "%s%i", TX_RING_PREFIX, portid); + r = rte_ring_create(name, NB_MBUF, + SOCKET_ID_ANY, RING_F_SP_ENQ | RING_F_SC_DEQ); + if (r == NULL) + rte_exit(EXIT_FAILURE, "Cannot create ring %s\n", name); + + ctrl->vm_ports[portid].tx_ring = r; + } + + /* create metadata, output cmdline */ + if (rte_ivshmem_metadata_create(METADATA_NAME) < 0) + rte_exit(EXIT_FAILURE, "Cannot create IVSHMEM metadata\n"); + + if (rte_ivshmem_metadata_add_memzone(ctrl_mz, METADATA_NAME)) + rte_exit(EXIT_FAILURE, "Cannot add memzone to IVSHMEM metadata\n"); + + if (rte_ivshmem_metadata_add_mempool(l2fwd_ivshmem_pktmbuf_pool, METADATA_NAME)) + rte_exit(EXIT_FAILURE, "Cannot add mbuf mempool to IVSHMEM metadata\n"); + + for (portid = 0; portid < nb_ports_available; portid++) { + if (rte_ivshmem_metadata_add_ring(ctrl->vm_ports[portid].rx_ring, + METADATA_NAME) < 0) + rte_exit(EXIT_FAILURE, "Cannot add ring %s to IVSHMEM metadata\n", + ctrl->vm_ports[portid].rx_ring->name); + if (rte_ivshmem_metadata_add_ring(ctrl->vm_ports[portid].tx_ring, + METADATA_NAME) < 0) + rte_exit(EXIT_FAILURE, "Cannot add ring %s to IVSHMEM metadata\n", + ctrl->vm_ports[portid].tx_ring->name); + } + generate_ivshmem_cmdline(METADATA_NAME); + + ctrl->nb_ports = nb_ports_available; + + printf("Waiting for VM to initialize...\n"); + + /* wait for VM to initialize */ + while (ctrl->state != STATE_FWD) { + if (ctrl->state == STATE_FAIL) + rte_exit(EXIT_FAILURE, "VM reported failure\n"); + + sleep(1); + } + + printf("Done!\n"); + + sigsetup(); + + /* launch per-lcore init on every lcore */ + rte_eal_mp_remote_launch(l2fwd_ivshmem_launch_one_lcore, NULL, CALL_MASTER); + RTE_LCORE_FOREACH_SLAVE(lcore_id) { + if (rte_eal_wait_lcore(lcore_id) < 0) + return -1; + } + + if (ctrl->state == STATE_FAIL) + rte_exit(EXIT_FAILURE, "VM reported failure\n"); + + return 0; +} diff --git a/examples/l2fwd-ivshmem/include/common.h b/examples/l2fwd-ivshmem/include/common.h new file mode 100644 index 0000000000..49ac26db1a --- /dev/null +++ b/examples/l2fwd-ivshmem/include/common.h @@ -0,0 +1,111 @@ +/*- + * 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. + */ + +#ifndef _IVSHMEM_COMMON_H_ +#define _IVSHMEM_COMMON_H_ + +#define RTE_LOGTYPE_L2FWD_IVSHMEM RTE_LOGTYPE_USER1 + +#define CTRL_MZ_NAME "CTRL_MEMZONE" +#define MBUF_MP_NAME "MBUF_MEMPOOL" +#define RX_RING_PREFIX "RX_" +#define TX_RING_PREFIX "TX_" + +/* A tsc-based timer responsible for triggering statistics printout */ +#define TIMER_MILLISECOND 2000000ULL /* around 1ms at 2 Ghz */ +#define MAX_TIMER_PERIOD 86400 /* 1 day max */ +static int64_t timer_period = 10 * TIMER_MILLISECOND * 1000; /* default period is 10 seconds */ + +#define DIM(x)\ + (sizeof(x)/sizeof(x)[0]) + +#define MAX_PKT_BURST 32 + +const struct rte_memzone * ctrl_mz; + +enum l2fwd_state { + STATE_NONE = 0, + STATE_FWD, + STATE_EXIT, + STATE_FAIL +}; + +/* Per-port statistics struct */ +struct port_statistics { + uint64_t tx; + uint64_t rx; + uint64_t dropped; +} __rte_cache_aligned; + +struct mbuf_table { + unsigned len; + struct rte_mbuf *m_table[MAX_PKT_BURST * 2]; /**< allow up to two bursts */ +}; + +struct vm_port_param { + struct rte_ring * rx_ring; /**< receiving ring for current port */ + struct rte_ring * tx_ring; /**< transmitting ring for current port */ + struct vm_port_param * dst; /**< current port's destination port */ + volatile struct port_statistics stats; /**< statistics for current port */ + struct ether_addr ethaddr; /**< Ethernet address of the port */ +}; + +/* control structure, to synchronize host and VM */ +struct ivshmem_ctrl { + rte_spinlock_t lock; + uint8_t nb_ports; /**< total nr of ports */ + volatile enum l2fwd_state state; /**< report state */ + struct vm_port_param vm_ports[RTE_MAX_ETHPORTS]; +}; + +struct ivshmem_ctrl * ctrl; + +static unsigned int l2fwd_ivshmem_rx_queue_per_lcore = 1; + +static void sighandler(int __rte_unused s) +{ + ctrl->state = STATE_EXIT; +} + +static void sigsetup(void) +{ + struct sigaction sigIntHandler; + + sigIntHandler.sa_handler = sighandler; + sigemptyset(&sigIntHandler.sa_mask); + sigIntHandler.sa_flags = 0; + + sigaction(SIGINT, &sigIntHandler, NULL); +} + +#endif /* _IVSHMEM_COMMON_H_ */ -- 2.20.1