From: Daniel Mrzyglod <danielx.t.mrzyg...@intel.com> Add a sample application that acts as a PTP slave using the DPDK ieee1588 functions.
Signed-off-by: Daniel Mrzyglod <danielx.t.mrzyglod at intel.com> Signed-off-by: Pablo de Lara <pablo.de.lara.guarch at intel.com> Reviewed-by: John McNamara <john.mcnamara at intel.com> --- MAINTAINERS | 4 + examples/Makefile | 1 + examples/ptpclient/Makefile | 56 +++ examples/ptpclient/ptpclient.c | 780 +++++++++++++++++++++++++++++++++++++++++ 4 files changed, 841 insertions(+) create mode 100644 examples/ptpclient/Makefile create mode 100644 examples/ptpclient/ptpclient.c diff --git a/MAINTAINERS b/MAINTAINERS index c8be5d2..28b04ae 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -520,3 +520,7 @@ F: examples/tep_termination/ F: examples/vmdq/ F: examples/vmdq_dcb/ F: doc/guides/sample_app_ug/vmdq_dcb_forwarding.rst + +M: Pablo de Lara <pablo.de.lara.guarch at intel.com> +M: Daniel Mrzyglod <danielx.t.mrzyglod at intel.com> +F: examples/ptpclient 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 $(RTE_SDK)/mk/rte.extsubdir.mk diff --git a/examples/ptpclient/Makefile b/examples/ptpclient/Makefile new file mode 100644 index 0000000..b77cf71 --- /dev/null +++ b/examples/ptpclient/Makefile @@ -0,0 +1,56 @@ +# BSD LICENSE +# +# Copyright(c) 2015 Intel Corporation. All rights reserved. +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# * Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# * Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in +# the documentation and/or other materials provided with the +# distribution. +# * Neither the name of Intel Corporation nor the names of its +# contributors may be used to endorse or promote products derived +# from this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +ifeq ($(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 += -O3 +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 + +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..0af4f3b --- /dev/null +++ b/examples/ptpclient/ptpclient.c @@ -0,0 +1,780 @@ +/*- + * 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 delta values + * which are used to synchronize the PHC clock. if the "-T 1" parameter is + * passed to the application the Linux kernel clock is also synchronized. + */ + +#include <stdint.h> +#include <inttypes.h> +#include <rte_eal.h> +#include <rte_ethdev.h> +#include <rte_cycles.h> +#include <rte_lcore.h> +#include <rte_mbuf.h> +#include <rte_ip.h> +#include <limits.h> +#include <sys/time.h> +#include <getopt.h> + +#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 KERNEL_TIME_ADJUST_LIMIT 20000 +#define PTP_PROTOCOL 0x88F7 + +struct rte_mempool *mbuf_pool; +uint32_t ptp_enabled_port_mask; +uint8_t ptp_enabled_port_nb; +static uint8_t ptp_enabled_ports[RTE_MAX_ETHPORTS]; + +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_id { + uint8_t id[8]; +}; + +struct port_id { + struct clock_id clock_id; + uint16_t port_number; +} __attribute__((packed)); + +struct ptp_header { + uint8_t msg_type; + 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_id source_port_id; + uint16_t seq_id; + uint8_t control; + int8_t log_message_interval; +} __attribute__((packed)); + +struct sync_msg { + struct ptp_header hdr; + struct tstamp origin_tstamp; +} __attribute__((packed)); + +struct follow_up_msg { + struct ptp_header hdr; + struct tstamp precise_origin_tstamp; + uint8_t suffix[0]; +} __attribute__((packed)); + +struct delay_req_msg { + struct ptp_header hdr; + struct tstamp origin_tstamp; +} __attribute__((packed)); + +struct delay_resp_msg { + struct ptp_header hdr; + struct tstamp rx_tstamp; + struct port_id req_port_id; + 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 tstamp1; + struct timespec tstamp2; + struct timespec tstamp3; + struct timespec tstamp4; + struct clock_id client_clock_id; + struct clock_id master_clock_id; + struct timeval new_adj; + int64_t delta; + uint8_t 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; + struct timespec net_time, sys_time; + + 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->tstamp2.tv_sec), + (ptp_data->tstamp2.tv_nsec)); + + printf("\nT1 - Master Clock. %lds %ldns ", + ptp_data->tstamp1.tv_sec, + (ptp_data->tstamp1.tv_nsec)); + + printf("\nT3 - Slave Clock. %lds %ldns", + ptp_data->tstamp3.tv_sec, + (ptp_data->tstamp3.tv_nsec)); + + printf("\nT4 - Master Clock. %lds %ldns ", + ptp_data->tstamp4.tv_sec, + (ptp_data->tstamp4.tv_nsec)); + + printf("\nDelta between master and slave clocks:%"PRId64"ns\n", + ptp_data->delta); + + clock_gettime(CLOCK_REALTIME, &sys_time); + rte_eth_timesync_read_time(ptp_data->current_ptp_port, &net_time); + + time_t ts = net_time.tv_sec; + + printf("\n\nComparison between Linux kernel Time and PTP:"); + + printf("\nCurrent PTP Time: %.24s %.9ld ns", + ctime(&ts), net_time.tv_nsec); + + nsec = (int64_t)timespec64_to_ns(&net_time) - + (int64_t)timespec64_to_ns(&sys_time); + ptp_data->new_adj = ns_to_timeval(nsec); + + 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->tstamp1); + t2 = timespec64_to_ns(&ptp_data->tstamp2); + t3 = timespec64_to_ns(&ptp_data->tstamp3); + t4 = timespec64_to_ns(&ptp_data->tstamp4); + + delta = -((int64_t)((t2 - t1) - (t4 - t3))) / 2; + + return delta; +} + +/* + * Parse the PTP SYNC message. + */ +static void +parse_sync(struct ptpv2_data_slave_ordinary *ptp_data, uint16_t rx_tstamp_idx) +{ + 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->seq_id); + + if (ptp_data->ptpset == 0) { + rte_memcpy(&ptp_data->master_clock_id, + &ptp_hdr->source_port_id.clock_id, + sizeof(struct clock_id)); + ptp_data->ptpset = 1; + } + + if (memcmp(&ptp_hdr->source_port_id.clock_id, + &ptp_hdr->source_port_id.clock_id, + sizeof(struct clock_id)) == 0) { + + if (ptp_data->ptpset == 1) + rte_eth_timesync_read_rx_timestamp(ptp_data->portid, + &ptp_data->tstamp2, rx_tstamp_idx); + } + +} + +/* + * Parse the PTP FOLLOWUP message and send DELAY_REQ to the 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_id *client_clkid; + struct ptp_message *ptp_msg; + struct rte_mbuf *created_pkt; + struct tstamp *origin_tstamp; + 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_id.clock_id, + sizeof(struct clock_id)) != 0) + return; + + ptp_data->seqID_FOLLOWUP = rte_be_to_cpu_16(ptp_hdr->seq_id); + ptp_msg = (struct ptp_message *) (rte_pktmbuf_mtod(m, char *) + + sizeof(struct ether_hdr)); + + origin_tstamp = &ptp_msg->follow_up.precise_origin_tstamp; + ptp_data->tstamp1.tv_nsec = ntohl(origin_tstamp->ns); + ptp_data->tstamp1.tv_sec = + ((uint64_t)ntohl(origin_tstamp->sec_lsb)) | + (((uint64_t)ntohs(origin_tstamp->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.seq_id = htons(ptp_data->seqID_SYNC); + ptp_msg->delay_req.hdr.msg_type = 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_id.clock_id; + + 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_id)); + + /* Enable flag for hardware timestamping. */ + created_pkt->ol_flags |= PKT_TX_IEEE1588_TMST; + + /*Read value from NIC to prevent latching with old value. */ + rte_eth_timesync_read_tx_timestamp(ptp_data->portid, + &ptp_data->tstamp3); + + /* Transmit the packet. */ + rte_eth_tx_burst(ptp_data->portid, 0, &created_pkt, 1); + + wait_us = 0; + ptp_data->tstamp3.tv_nsec = 0; + ptp_data->tstamp3.tv_sec = 0; + + /* Wait at least 1 us to read TX timestamp. */ + while ((rte_eth_timesync_read_tx_timestamp(ptp_data->portid, + &ptp_data->tstamp3) < 0) && (wait_us < 1000)) { + rte_delay_us(1); + wait_us++; + } + } +} + +/* + * Update the kernel time with the difference between it and the current NIC + * time. + */ +static inline void +update_kernel_time(void) +{ + int64_t nsec; + struct timespec net_time, sys_time; + + clock_gettime(CLOCK_REALTIME, &sys_time); + rte_eth_timesync_read_time(ptp_data.current_ptp_port, &net_time); + + nsec = (int64_t)timespec64_to_ns(&net_time) - + (int64_t)timespec64_to_ns(&sys_time); + + ptp_data.new_adj = ns_to_timeval(nsec); + + /* + * If difference between kernel time and system time in NIC is too big + * (more than +/- 20 microseconds), use clock_settime to set directly + * the kernel time, as adjtime is better for small adjustments (takes + * longer to adjust the time). + */ + + if (nsec > KERNEL_TIME_ADJUST_LIMIT || nsec < -KERNEL_TIME_ADJUST_LIMIT) + clock_settime(CLOCK_REALTIME, &net_time); + else + adjtime(&ptp_data.new_adj, 0); + + +} + +/* + * Parse the 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; + struct tstamp *rx_tstamp; + uint16_t seq_id; + + ptp_msg = (struct ptp_message *) (rte_pktmbuf_mtod(m, char *) + + sizeof(struct ether_hdr)); + seq_id = rte_be_to_cpu_16(ptp_msg->delay_resp.hdr.seq_id); + if (memcmp(&ptp_data->client_clock_id, + &ptp_msg->delay_resp.req_port_id.clock_id, + sizeof(struct clock_id)) == 0) { + if (seq_id == ptp_data->seqID_FOLLOWUP) { + rx_tstamp = &ptp_msg->delay_resp.rx_tstamp; + ptp_data->tstamp4.tv_nsec = ntohl(rx_tstamp->ns); + ptp_data->tstamp4.tv_sec = + ((uint64_t)ntohl(rx_tstamp->sec_lsb)) | + (((uint64_t)ntohs(rx_tstamp->sec_msb)) << 32); + + /* Evaluate the delta for adjustment. */ + ptp_data->delta = delta_eval(ptp_data); + + rte_eth_timesync_adjust_time(ptp_data->portid, + ptp_data->delta); + + ptp_data->current_ptp_port = ptp_data->portid; + + /* Update kernel time if enabled in app parameters. */ + if (ptp_data->kernel_time_set == 1) + update_kernel_time(); + + + + } + } +} + +/* 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->msg_type) { + case SYNC: + parse_sync(&ptp_data, m->timesync); + 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; + + /* + * 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 (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 the 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; + + /* Parse the hexadecimal string. */ + pm = strtoul(param, &end, 16); + + if ((param[0] == '\0') || (end == NULL) || (*end != '\0')) + return -1; + if (pm == 0) + return 0; + + return 1; +} + +/* Parse the commandline arguments. */ +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; +} -- 1.8.1.4
