From patchwork Fri Oct 30 09:43:23 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Mrzyglod X-Patchwork-Id: 8343 Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [IPv6:::1]) by dpdk.org (Postfix) with ESMTP id 2D0488E72; Fri, 30 Oct 2015 10:48:22 +0100 (CET) Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by dpdk.org (Postfix) with ESMTP id 204358E70 for ; Fri, 30 Oct 2015 10:48:19 +0100 (CET) Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP; 30 Oct 2015 02:48:19 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,217,1444719600"; d="scan'208";a="838723862" Received: from unknown ([10.217.248.15]) by orsmga002.jf.intel.com with SMTP; 30 Oct 2015 02:48:17 -0700 Received: by (sSMTP sendmail emulation); Fri, 30 Oct 2015 10:47:34 +0100 From: Daniel Mrzyglod To: dev@dpdk.org Date: Fri, 30 Oct 2015 10:43:23 +0100 Message-Id: <1446198204-9852-6-git-send-email-danielx.t.mrzyglod@intel.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1446198204-9852-1-git-send-email-danielx.t.mrzyglod@intel.com> References: <1443799208-9408-1-git-send-email-danielx.t.mrzyglod@intel.com> <1446198204-9852-1-git-send-email-danielx.t.mrzyglod@intel.com> Subject: [dpdk-dev] [PATCH v2 5/6] example: PTP client slave minimal implementation X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Add a sample application that acts as a PTP slave using the DPDK ieee1588 functions. Signed-off-by: Daniel Mrzyglod --- MAINTAINERS | 3 + doc/guides/rel_notes/release_2_2.rst | 5 + examples/Makefile | 1 + examples/ptpclient/Makefile | 57 +++ examples/ptpclient/ptpclient.c | 788 +++++++++++++++++++++++++++++++++++ 5 files changed, 854 insertions(+) create mode 100644 examples/ptpclient/Makefile create mode 100644 examples/ptpclient/ptpclient.c diff --git a/MAINTAINERS b/MAINTAINERS index 080a8e8..3e446d5 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -514,3 +514,6 @@ F: examples/tep_termination/ F: examples/vmdq/ F: examples/vmdq_dcb/ F: doc/guides/sample_app_ug/vmdq_dcb_forwarding.rst + +M: Daniel Mrzyglod +F: examples/ptpclient diff --git a/doc/guides/rel_notes/release_2_2.rst b/doc/guides/rel_notes/release_2_2.rst index b83ef7f..840d8ea 100644 --- a/doc/guides/rel_notes/release_2_2.rst +++ b/doc/guides/rel_notes/release_2_2.rst @@ -92,6 +92,11 @@ Libraries Examples ~~~~~~~~ +* **ptpclient: simple PTP slave client.** + + Add a sample application that acts as a PTP slave using the + DPDK ieee1588 functions. + Other ~~~~~ diff --git a/examples/Makefile b/examples/Makefile index b4eddbd..4672534 100644 --- a/examples/Makefile +++ b/examples/Makefile @@ -74,5 +74,6 @@ DIRS-$(CONFIG_RTE_LIBRTE_XEN_DOM0) += vhost_xen DIRS-y += vmdq DIRS-y += vmdq_dcb DIRS-$(CONFIG_RTE_LIBRTE_POWER) += vm_power_manager +DIRS-$(CONFIG_RTE_LIBRTE_IEEE1588) += ptpclient include $(RTE_SDK)/mk/rte.extsubdir.mk diff --git a/examples/ptpclient/Makefile b/examples/ptpclient/Makefile new file mode 100644 index 0000000..1a8efb3 --- /dev/null +++ b/examples/ptpclient/Makefile @@ -0,0 +1,57 @@ +# BSD LICENSE +# +# Copyright(c) 2010-2015 Intel Corporation. All rights reserved. +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# * Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# * Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in +# the documentation and/or other materials provided with the +# distribution. +# * Neither the name of Intel Corporation nor the names of its +# contributors may be used to endorse or promote products derived +# from this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +ifeq ($(RTE_SDK),) +$(error "Please define RTE_SDK environment variable") +endif + +# Default target, can be overriddegitn by command line or environment +RTE_TARGET ?= x86_64-native-linuxapp-gcc + +include $(RTE_SDK)/mk/rte.vars.mk + +# binary name +APP = ptpclient + +# all source are stored in SRCS-y +SRCS-y := ptpclient.c + +CFLAGS += $(WERROR_FLAGS) + +# workaround for a gcc bug with noreturn attribute +# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12603 +ifeq ($(CONFIG_RTE_TOOLCHAIN_GCC),y) +CFLAGS_main.o += -Wno-return-type +endif + +EXTRA_CFLAGS += -O3 + +include $(RTE_SDK)/mk/rte.extapp.mk diff --git a/examples/ptpclient/ptpclient.c b/examples/ptpclient/ptpclient.c new file mode 100644 index 0000000..453c20b --- /dev/null +++ b/examples/ptpclient/ptpclient.c @@ -0,0 +1,788 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2015 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. + */ + +/* + * This Application is a simple Layer 2 PTP v2 client + * IT shows T1-T4 values wchich are used to synchronize PHC clock. + * if -T 1 parameter is used Linux kernel Clock is sychronized with ptp clock + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define RX_RING_SIZE 128 +#define TX_RING_SIZE 512 + +#define NUM_MBUFS 8191 +#define MBUF_CACHE_SIZE 250 + +/* Values for the PTP messageType field */ +#define SYNC 0x0 +#define DELAY_REQ 0x1 +#define PDELAY_REQ 0x2 +#define PDELAY_RESP 0x3 +#define FOLLOW_UP 0x8 +#define DELAY_RESP 0x9 +#define PDELAY_RESP_FOLLOW_UP 0xA +#define ANNOUNCE 0xB +#define SIGNALING 0xC +#define MANAGEMENT 0xD + +#define NSEC_PER_SEC 1000000000L +#define PTP_PROTOCOL 0x88F7 +#define KERNEL_UPDATE 100 +#define DATE_IN_2015 1444924130 +#define MAX_PORT 64 + + + +struct rte_mempool *mbuf_pool; +uint32_t ptp_enabled_port_mask; +uint8_t ptp_enabled_port_nb; +static uint8_t ptp_enabled_ports[MAX_PORT]; + +static const struct rte_eth_conf port_conf_default = { + .rxmode = { .max_rx_pkt_len = ETHER_MAX_LEN } +}; + +static const struct ether_addr ether_multicast = { + .addr_bytes = {0x01, 0x1b, 0x19, 0x0, 0x0, 0x0} +}; + +/* Structs used for PTP handling */ +struct tstamp { + uint16_t sec_msb; + uint32_t sec_lsb; + uint32_t ns; +} __attribute__((packed)); + +struct clock_identity { + uint8_t id[8]; +}; + +struct port_identity { + struct clock_identity clock_identity; + uint16_t port_number; +} __attribute__((packed)); + +struct ptp_header { + uint8_t msgtype; + uint8_t ver; + uint16_t message_length; + uint8_t domain_number; + uint8_t reserved1; + uint8_t flag_field[2]; + int64_t correction; + uint32_t reserved2; + struct port_identity source_port_identity; + uint16_t sequenceId; + uint8_t control; + int8_t log_message_interval; +} __attribute__((packed)); + +struct sync_msg { + struct ptp_header hdr; + struct tstamp origin_timestamp; +} __attribute__((packed)); + +struct follow_up_msg { + struct ptp_header hdr; + struct tstamp precise_origin_timestamp; + uint8_t suffix[0]; +} __attribute__((packed)); + +struct delay_req_msg { + struct ptp_header hdr; + struct tstamp origin_timestamp; +} __attribute__((packed)); + +struct delay_resp_msg { + struct ptp_header hdr; + struct tstamp rx_tstamp; + struct port_identity requesting_port_identity; + uint8_t suffix[0]; +} __attribute__((packed)); + +struct ptp_message { + union { + struct ptp_header header; + struct sync_msg sync; + struct delay_req_msg delay_req; + struct follow_up_msg follow_up; + struct delay_resp_msg delay_resp; + } __attribute__((packed)); +}; + +struct ptpv2_data_slave_ordinary { + struct rte_mbuf *m; + struct timespec timestamp; + struct timespec timestamp1; + struct timespec timestamp2; + struct timespec timestamp3; + struct timespec timestamp4; + struct timespec systime; + struct clock_identity client_clock_id; + struct clock_identity master_clock_id; + struct timeval new_adj; + struct timeval old_adj; + int64_t delta; + uint8_t portid; + uint8_t clock_portid; + uint16_t seqID_SYNC; + uint16_t seqID_FOLLOWUP; + uint8_t ptpset; + uint8_t kernel_time_set; + uint8_t current_ptp_port; +}; + +static struct ptpv2_data_slave_ordinary ptp_data; + +static inline uint64_t timespec64_to_ns(const struct timespec *ts) +{ + return ((uint64_t) ts->tv_sec * NSEC_PER_SEC) + ts->tv_nsec; +} + +static struct timeval +ns_to_timeval(int64_t nsec) +{ + struct timespec t_spec = {0, 0}; + struct timeval t_eval = {0, 0}; + int32_t rem; + + if (nsec == 0) + return t_eval; + rem = nsec % NSEC_PER_SEC; + t_spec.tv_sec = nsec / NSEC_PER_SEC; + + if (rem < 0) { + t_spec.tv_sec--; + rem += NSEC_PER_SEC; + } + + t_spec.tv_nsec = rem; + t_eval.tv_sec = t_spec.tv_sec; + t_eval.tv_usec = t_spec.tv_nsec / 1000; + + return t_eval; +} + +/* + * Initializes a given port using global settings and with the RX buffers + * coming from the mbuf_pool passed as a parameter. + */ +static inline int +port_init(uint8_t port, struct rte_mempool *mbuf_pool) +{ + struct rte_eth_dev_info dev_info; + struct rte_eth_conf port_conf = port_conf_default; + const uint16_t rx_rings = 1; + const uint16_t tx_rings = 1; + int retval; + uint16_t q; + + if (port >= rte_eth_dev_count()) + return -1; + + /* Configure the Ethernet device. */ + retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf); + if (retval != 0) + return retval; + + /* Allocate and set up 1 RX queue per Ethernet port. */ + for (q = 0; q < rx_rings; q++) { + retval = rte_eth_rx_queue_setup(port, q, RX_RING_SIZE, + rte_eth_dev_socket_id(port), NULL, mbuf_pool); + + if (retval < 0) + return retval; + } + + /* Allocate and set up 1 TX queue per Ethernet port. */ + for (q = 0; q < tx_rings; q++) { + /* Setup txq_flags */ + struct rte_eth_txconf *txconf; + + rte_eth_dev_info_get(q, &dev_info); + txconf = &dev_info.default_txconf; + txconf->txq_flags = 0; + + retval = rte_eth_tx_queue_setup(port, q, TX_RING_SIZE, + rte_eth_dev_socket_id(port), txconf); + if (retval < 0) + return retval; + } + + /* Start the Ethernet port. */ + retval = rte_eth_dev_start(port); + if (retval < 0) + return retval; + + /* Enable timesync timestamping for the Ethernet device */ + rte_eth_timesync_enable(port); + + /* Enable RX in promiscuous mode for the Ethernet device. */ + rte_eth_promiscuous_enable(port); + + return 0; +} + +static void +print_clock_info(struct ptpv2_data_slave_ordinary *ptp_data) +{ + int64_t nsec; + + printf("Master Clock id: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", + ptp_data->master_clock_id.id[0], + ptp_data->master_clock_id.id[1], + ptp_data->master_clock_id.id[2], + ptp_data->master_clock_id.id[3], + ptp_data->master_clock_id.id[4], + ptp_data->master_clock_id.id[5], + ptp_data->master_clock_id.id[6], + ptp_data->master_clock_id.id[7]); + + printf("\nT2 - Slave Clock. %lds %ldns", + (ptp_data->timestamp2.tv_sec), + (ptp_data->timestamp2.tv_nsec)); + + printf("\nT1 - Master Clock. %lds %ldns ", + ptp_data->timestamp1.tv_sec, + (ptp_data->timestamp1.tv_nsec)); + + printf("\nT3 - Slave Clock. %lds %ldns", + ptp_data->timestamp3.tv_sec, + (ptp_data->timestamp3.tv_nsec)); + + printf("\nT4 - Master Clock. %lds %ldns ", + ptp_data->timestamp4.tv_sec, + (ptp_data->timestamp4.tv_nsec)); + + printf("\nDelta between master and slave clocks:%"PRId64"ns\n", + ptp_data->delta); + + clock_gettime(CLOCK_REALTIME, &ptp_data->systime); + rte_eth_timesync_time_get(ptp_data->clock_portid, + &ptp_data->timestamp); + time_t ts = ptp_data->timestamp.tv_sec; + + printf("\n\nComparison between Linux kernel Time and PTP:"); + + printf("\nCurrent PTP Time: %.24s %.9ld ns", + ctime(&ts), ptp_data->timestamp.tv_nsec); + + nsec = (int64_t)timespec64_to_ns(&ptp_data->timestamp) - + (int64_t)timespec64_to_ns(&ptp_data->systime); + ptp_data->new_adj = ns_to_timeval(nsec); + + if (ptp_data->kernel_time_set == 1) + adjtime(&ptp_data->new_adj, NULL); + + gettimeofday(&ptp_data->new_adj, NULL); + time_t tp = ptp_data->new_adj.tv_sec; + + printf("\nCurrent SYS Time: %.24s %.6ld ns", + ctime(&tp), ptp_data->new_adj.tv_usec); + + printf("\nDelta between PTP and Linux Kernel time:%"PRId64"ns\n", + nsec); + printf("[Ctrl+C to quit]\n"); + + /* Clear screen and put cursor in column 1, row 1 */ + printf("\033[2J\033[1;1H"); +} + +static int64_t +delta_eval(struct ptpv2_data_slave_ordinary *ptp_data) +{ + int64_t delta; + uint64_t t1 = 0; + uint64_t t2 = 0; + uint64_t t3 = 0; + uint64_t t4 = 0; + + t1 = timespec64_to_ns(&ptp_data->timestamp1); + t2 = timespec64_to_ns(&ptp_data->timestamp2); + t3 = timespec64_to_ns(&ptp_data->timestamp3); + t4 = timespec64_to_ns(&ptp_data->timestamp4); + + /* delta = -[(T2-T1) - (T4-T3)]/2 */ + delta = -((int64_t)((t2 - t1) - (t4 - t3))) / 2; + + return delta; +} + +/* + * Parse PTP SYNC message + */ +static void +parse_sync(struct ptpv2_data_slave_ordinary *ptp_data) +{ + struct ptp_header *ptp_hdr; + + ptp_hdr = (struct ptp_header *)(rte_pktmbuf_mtod(ptp_data->m, char *) + + sizeof(struct ether_hdr)); + ptp_data->seqID_SYNC = rte_be_to_cpu_16(ptp_hdr->sequenceId); + + if (ptp_data->ptpset == 0) { + rte_memcpy(&ptp_data->master_clock_id, + &ptp_hdr->source_port_identity.clock_identity, + sizeof(struct clock_identity)); + ptp_data->ptpset = 1; + } + + if (memcmp(&ptp_hdr->source_port_identity.clock_identity, + &ptp_hdr->source_port_identity.clock_identity, + sizeof(struct clock_identity)) == 0) { + + if (ptp_data->ptpset == 1) + rte_eth_timesync_read_rx_timestamp(ptp_data->portid, + &ptp_data->timestamp2, 0); + } + +} + +/* + * Parse PTP FOLLOWUP message & Send DELAY_REQ to master clock. + */ +static void +parse_fup(struct ptpv2_data_slave_ordinary *ptp_data) +{ + struct ether_hdr *eth_hdr; + struct ptp_header *ptp_hdr; + struct clock_identity *client_clkid; + struct ptp_message *ptp_msg; + struct rte_mbuf *created_pkt; + struct ether_addr eth_multicast = ether_multicast; + size_t pkt_size; + int wait_us; + struct rte_mbuf *m = ptp_data->m; + + eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *); + ptp_hdr = (struct ptp_header *)(rte_pktmbuf_mtod(m, char *) + + sizeof(struct ether_hdr)); + if (memcmp(&ptp_data->master_clock_id, + &ptp_hdr->source_port_identity.clock_identity, + sizeof(struct clock_identity)) != 0) + return; + + ptp_data->seqID_FOLLOWUP = rte_be_to_cpu_16(ptp_hdr->sequenceId); + ptp_msg = (struct ptp_message *) + (rte_pktmbuf_mtod(m, char *) + sizeof(struct ether_hdr)); + ptp_data->timestamp1.tv_nsec = + ntohl(ptp_msg->follow_up.precise_origin_timestamp.ns); + ptp_data->timestamp1.tv_sec = + ((uint64_t)ntohl + (ptp_msg->follow_up.precise_origin_timestamp.sec_lsb)) | + (((uint64_t)ntohs + (ptp_msg->follow_up.precise_origin_timestamp.sec_msb)) + << 32); + + if (ptp_data->seqID_FOLLOWUP == ptp_data->seqID_SYNC) { + + created_pkt = rte_pktmbuf_alloc(mbuf_pool); + pkt_size = sizeof(struct ether_hdr) + sizeof(struct ptp_message); + created_pkt->data_len = pkt_size; + created_pkt->pkt_len = pkt_size; + eth_hdr = rte_pktmbuf_mtod(created_pkt, struct ether_hdr *); + rte_eth_macaddr_get(ptp_data->portid, ð_hdr->s_addr); + + /* Set multicast address 01-1B-19-00-00-00 */ + ether_addr_copy(ð_multicast, ð_hdr->d_addr); + + eth_hdr->ether_type = htons(PTP_PROTOCOL); + ptp_msg = (struct ptp_message *) + (rte_pktmbuf_mtod(created_pkt, char *) + + sizeof(struct ether_hdr)); + + ptp_msg->delay_req.hdr.sequenceId = htons(ptp_data->seqID_SYNC); + ptp_msg->delay_req.hdr.msgtype = DELAY_REQ; + ptp_msg->delay_req.hdr.ver = 2; + ptp_msg->delay_req.hdr.control = 1; + ptp_msg->delay_req.hdr.log_message_interval = 127; + + /* Set up clock id */ + client_clkid = + &ptp_msg->delay_req.hdr.source_port_identity.clock_identity; + + client_clkid->id[0] = eth_hdr->s_addr.addr_bytes[0]; + client_clkid->id[1] = eth_hdr->s_addr.addr_bytes[1]; + client_clkid->id[2] = eth_hdr->s_addr.addr_bytes[2]; + client_clkid->id[3] = 0xFF; + client_clkid->id[4] = 0xFE; + client_clkid->id[5] = eth_hdr->s_addr.addr_bytes[3]; + client_clkid->id[6] = eth_hdr->s_addr.addr_bytes[4]; + client_clkid->id[7] = eth_hdr->s_addr.addr_bytes[5]; + + rte_memcpy(&ptp_data->client_clock_id, + client_clkid, + sizeof(struct clock_identity)); + + /* Enable Flag for Hardware Timestamping */ + created_pkt->ol_flags |= PKT_TX_IEEE1588_TMST; + + /* We read value from NIC to prevent latching with old value */ + rte_eth_timesync_read_tx_timestamp(ptp_data->portid, + &ptp_data->timestamp3); + + /* the packet is being transmitted */ + rte_eth_tx_burst(ptp_data->portid, 0, &created_pkt, 1); + + wait_us = 0; + ptp_data->timestamp3.tv_nsec = 0; + ptp_data->timestamp3.tv_sec = 0; + + /* we must wait at least 1us to read TX Timestamp */ + while ((rte_eth_timesync_read_tx_timestamp(ptp_data->portid, + &ptp_data->timestamp3) < 0) && (wait_us < 1000)) { + rte_delay_us(1); + wait_us++; + } + } +} + +/* + * Parse DELAY_RESP message + */ +static void +parse_drsp(struct ptpv2_data_slave_ordinary *ptp_data) +{ + struct rte_mbuf *m = ptp_data->m; + struct ptp_message *ptp_msg; + uint16_t seqid; + int64_t nsec; + struct timespec systime; + struct timespec nettime; + + ptp_msg = (struct ptp_message *) (rte_pktmbuf_mtod(m, char *) + + sizeof(struct ether_hdr)); + seqid = rte_be_to_cpu_16(ptp_msg->delay_resp.hdr.sequenceId); + if (memcmp(&ptp_data->client_clock_id, + &ptp_msg->delay_resp.requesting_port_identity.clock_identity, + sizeof(struct clock_identity)) == 0) { + + if (seqid == ptp_data->seqID_FOLLOWUP) { + ptp_data->timestamp4.tv_nsec = + ntohl(ptp_msg->delay_resp.rx_tstamp.ns); + ptp_data->timestamp4.tv_sec = + ((uint64_t)ntohl + (ptp_msg->delay_resp.rx_tstamp.sec_lsb)) | + (((uint64_t)ntohs + (ptp_msg->delay_resp.rx_tstamp.sec_msb)) << 32); + + /* Evaluate delta for adjustment */ + ptp_data->delta = delta_eval(ptp_data); + rte_eth_timesync_time_adjust(ptp_data->portid, ptp_data->delta); + ptp_data->clock_portid = ptp_data->portid; + ptp_data->current_ptp_port = ptp_data->clock_portid; + + if (ptp_data->kernel_time_set == 1) { + clock_gettime(CLOCK_REALTIME, &systime); + rte_eth_timesync_time_get(ptp_data->current_ptp_port, + &nettime); + nsec = (int64_t)timespec64_to_ns(&nettime) - + (int64_t)timespec64_to_ns(&systime); + + if (nsec > 2*NSEC_PER_SEC || nsec < -2*NSEC_PER_SEC) { + + /* + * This epoch time is set for first pass when + * right clock is not setup and values + * take us back to '70s + */ + if (likely(nettime.tv_sec > DATE_IN_2015)) + clock_settime(CLOCK_REALTIME, &nettime); + } + } + } + } +} + +/* This function processes PTP packets, implementing + * slave PTP IEEE1588 L2 functionality + */ +static void +parse_ptp_frames(uint8_t portid, struct rte_mbuf *m) { + struct ptp_header *ptp_hdr; + struct ether_hdr *eth_hdr; + uint16_t eth_type; + + eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *); + eth_type = rte_be_to_cpu_16(eth_hdr->ether_type); + + if (eth_type == PTP_PROTOCOL) { + ptp_data.m = m; + ptp_data.portid = portid; + ptp_hdr = (struct ptp_header *)(rte_pktmbuf_mtod(m, char *) + + sizeof(struct ether_hdr)); + + switch (ptp_hdr->msgtype) { + case SYNC: + parse_sync(&ptp_data); + break; + case FOLLOW_UP: + parse_fup(&ptp_data); + break; + case DELAY_RESP: + parse_drsp(&ptp_data); + print_clock_info(&ptp_data); + break; + default: + break; + } + } +} + +/* + * The lcore main. This is the main thread that does the work, reading from + * an input port and writing to an output port. + */ +static __attribute__((noreturn)) void +lcore_main(void) +{ + uint8_t portid; + unsigned nb_rx; + struct rte_mbuf *m; + int64_t i = 0; + int64_t nsec = 0; + + /* + * Check that the port is on the same NUMA node as the polling thread + * for best performance. + */ + printf("\nCore %u Waiting for SYNC packets. [Ctrl+C to quit]\n", + rte_lcore_id()); + + /* Run until the application is quit or killed. */ + + while (1) { + /* + * Read packet from RX queues + */ + for (portid = 0; portid < ptp_enabled_port_nb; portid++) { + + portid = ptp_enabled_ports[portid]; + nb_rx = rte_eth_rx_burst(portid, 0, &m, 1); + + if (ptp_data.kernel_time_set == 1) { + /* Update every KERNEL_UPDATE cycle */ + if (i % KERNEL_UPDATE == 0) { + clock_gettime(CLOCK_REALTIME, + &ptp_data.systime); + + rte_eth_timesync_time_get(ptp_data.current_ptp_port, + &ptp_data.timestamp); + + nsec = (int64_t)timespec64_to_ns(&ptp_data.timestamp) - + (int64_t)timespec64_to_ns(&ptp_data.systime); + + ptp_data.new_adj = ns_to_timeval(nsec); + adjtime(&ptp_data.new_adj, 0); + } + i++; + } + + if (likely(nb_rx == 0)) + continue; + + if (m->ol_flags & PKT_RX_IEEE1588_PTP) + parse_ptp_frames(portid, m); + + rte_pktmbuf_free(m); + } + } +} + +static void +print_usage(const char *prgname) +{ + printf("%s [EAL options] -- -p PORTMASK -T VALUE\n" + " -T VALUE: 0 - Disable, 1 - Enable Linux Clock Synchronization" + " (0 default)\n" + " -p PORTMASK: hexadecimal bitmask of ports to configure\n", + prgname); +} + +static int +ptp_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 +parse_ptp_kernel(const char *param) +{ + char *end = NULL; + unsigned long pm; + + pm = strtoul(param, &end, 16); + if ((param[0] == '\0') || (end == NULL) || (*end != '\0')) + return -1; + if (pm == 0) + return 0; + + return 1; +} + +/* Parse the argument given in the command line of the application */ +static int +ptp_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, "p:T:", + lgopts, &option_index)) != EOF) { + + switch (opt) { + + /* portmask */ + case 'p': + ptp_enabled_port_mask = ptp_parse_portmask(optarg); + if (ptp_enabled_port_mask == 0) { + printf("invalid portmask\n"); + print_usage(prgname); + return -1; + } + break; + /* time synchronization */ + case 'T': + ret = parse_ptp_kernel(optarg); + if (ret < 0) { + print_usage(prgname); + return -1; + } + + ptp_data.kernel_time_set = ret; + break; + + default: + print_usage(prgname); + return -1; + } + } + + argv[optind-1] = prgname; + + optind = 0; /* reset getopt lib */ + return 0; +} + +/* + * The main function, which does initialization and calls the per-lcore + * functions. + */ +int +main(int argc, char *argv[]) +{ + unsigned nb_ports; + + uint8_t portid; + + /* Initialize the Environment Abstraction Layer (EAL). */ + int ret = rte_eal_init(argc, argv); + + if (ret < 0) + rte_exit(EXIT_FAILURE, "Error with EAL initialization\n"); + + memset(&ptp_data, '\0', sizeof(struct ptpv2_data_slave_ordinary)); + + argc -= ret; + argv += ret; + + ret = ptp_parse_args(argc, argv); + if (ret < 0) + rte_exit(EXIT_FAILURE, "Error with PTP initialization\n"); + + /* Check that there is an even number of ports to send/receive on. */ + nb_ports = rte_eth_dev_count(); + + /* Creates a new mempool in memory to hold the mbufs. */ + mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL", NUM_MBUFS * nb_ports, + MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id()); + + if (mbuf_pool == NULL) + rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n"); + + /* Initialize all ports. */ + for (portid = 0; portid < nb_ports; portid++) { + if ((ptp_enabled_port_mask & (1 << portid)) != 0) { + + if (port_init(portid, mbuf_pool) == 0) { + ptp_enabled_ports[ptp_enabled_port_nb] = portid; + ptp_enabled_port_nb++; + } else { + rte_exit(EXIT_FAILURE, "Cannot init port %"PRIu8 "\n", + portid); + } + } else + printf("Skipping disabled port %u\n", portid); + } + + if (ptp_enabled_port_nb == 0) { + rte_exit(EXIT_FAILURE, + "All available ports are disabled. Please set portmask.\n"); + } + + if (rte_lcore_count() > 1) + printf("\nWARNING: Too many lcores enabled. Only 1 used.\n"); + + /* Call lcore_main on the master core only. */ + lcore_main(); + + return 0; +}