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35 #include <rte_cycles.h>
36 #include <rte_ethdev.h>
42 * The structure of a PTP V2 packet.
44 * Only the minimum fields used by the ieee1588 test are represented.
48 uint8_t version; /**< must be 0x02 */
52 #define PTP_SYNC_MESSAGE 0x0
53 #define PTP_DELAY_REQ_MESSAGE 0x1
54 #define PTP_PATH_DELAY_REQ_MESSAGE 0x2
55 #define PTP_PATH_DELAY_RESP_MESSAGE 0x3
56 #define PTP_FOLLOWUP_MESSAGE 0x8
57 #define PTP_DELAY_RESP_MESSAGE 0x9
58 #define PTP_PATH_DELAY_FOLLOWUP_MESSAGE 0xA
59 #define PTP_ANNOUNCE_MESSAGE 0xB
60 #define PTP_SIGNALLING_MESSAGE 0xC
61 #define PTP_MANAGEMENT_MESSAGE 0xD
64 * Forwarding of IEEE1588 Precise Time Protocol (PTP) packets.
66 * In this mode, packets are received one by one and are expected to be
67 * PTP V2 L2 Ethernet frames (with the specific Ethernet type "0x88F7")
68 * containing PTP "sync" messages (version 2 at offset 1, and message ID
71 * Check that each received packet is a IEEE1588 PTP V2 packet of type
72 * PTP_SYNC_MESSAGE, and that it has been identified and timestamped
74 * Check that the value of the last RX timestamp recorded by the controller
75 * is greater than the previous one.
77 * If everything is OK, send the received packet back on the same port,
78 * requesting for it to be timestamped by the hardware.
79 * Check that the value of the last TX timestamp recorded by the controller
80 * is greater than the previous one.
84 port_ieee1588_rx_timestamp_check(portid_t pi, uint32_t index)
86 struct timespec timestamp = {0, 0};
88 if (rte_eth_timesync_read_rx_timestamp(pi, ×tamp, index) < 0) {
89 printf("Port %u RX timestamp registers not valid\n", pi);
92 printf("Port %u RX timestamp value %lu s %lu ns\n",
93 pi, timestamp.tv_sec, timestamp.tv_nsec);
96 #define MAX_TX_TMST_WAIT_MICROSECS 1000 /**< 1 milli-second */
99 port_ieee1588_tx_timestamp_check(portid_t pi)
101 struct timespec timestamp = {0, 0};
102 unsigned wait_us = 0;
104 while ((rte_eth_timesync_read_tx_timestamp(pi, ×tamp) < 0) &&
105 (wait_us < MAX_TX_TMST_WAIT_MICROSECS)) {
109 if (wait_us >= MAX_TX_TMST_WAIT_MICROSECS) {
110 printf("Port %u TX timestamp registers not valid after "
111 "%u micro-seconds\n",
112 pi, MAX_TX_TMST_WAIT_MICROSECS);
115 printf("Port %u TX timestamp value %lu s %lu ns validated after "
116 "%u micro-second%s\n",
117 pi, timestamp.tv_sec, timestamp.tv_nsec, wait_us,
118 (wait_us == 1) ? "" : "s");
122 ieee1588_packet_fwd(struct fwd_stream *fs)
125 struct ether_hdr *eth_hdr;
126 struct ether_addr addr;
127 struct ptpv2_msg *ptp_hdr;
129 uint32_t timesync_index;
132 * Receive 1 packet at a time.
134 if (rte_eth_rx_burst(fs->rx_port, fs->rx_queue, &mb, 1) == 0)
140 * Check that the received packet is a PTP packet that was detected
143 eth_hdr = rte_pktmbuf_mtod(mb, struct ether_hdr *);
144 eth_type = rte_be_to_cpu_16(eth_hdr->ether_type);
146 if (! (mb->ol_flags & PKT_RX_IEEE1588_PTP)) {
147 if (eth_type == ETHER_TYPE_1588) {
148 printf("Port %u Received PTP packet not filtered"
152 printf("Port %u Received non PTP packet type=0x%4x "
154 fs->rx_port, eth_type,
155 (unsigned) mb->pkt_len);
157 rte_pktmbuf_free(mb);
160 if (eth_type != ETHER_TYPE_1588) {
161 printf("Port %u Received NON PTP packet incorrectly"
162 " detected by hardware\n",
164 rte_pktmbuf_free(mb);
169 * Check that the received PTP packet is a PTP V2 packet of type
172 ptp_hdr = (struct ptpv2_msg *) (rte_pktmbuf_mtod(mb, char *) +
173 sizeof(struct ether_hdr));
174 if (ptp_hdr->version != 0x02) {
175 printf("Port %u Received PTP V2 Ethernet frame with wrong PTP"
176 " protocol version 0x%x (should be 0x02)\n",
177 fs->rx_port, ptp_hdr->version);
178 rte_pktmbuf_free(mb);
181 if (ptp_hdr->msg_id != PTP_SYNC_MESSAGE) {
182 printf("Port %u Received PTP V2 Ethernet frame with unexpected"
183 " message ID 0x%x (expected 0x0 - PTP_SYNC_MESSAGE)\n",
184 fs->rx_port, ptp_hdr->msg_id);
185 rte_pktmbuf_free(mb);
188 printf("Port %u IEEE1588 PTP V2 SYNC Message filtered by hardware\n",
192 * Check that the received PTP packet has been timestamped by the
195 if (! (mb->ol_flags & PKT_RX_IEEE1588_TMST)) {
196 printf("Port %u Received PTP packet not timestamped"
199 rte_pktmbuf_free(mb);
203 /* For i40e we need the timesync register index. It is ignored for the
205 timesync_index = mb->timesync & 0x3;
206 /* Read and check the RX timestamp. */
207 port_ieee1588_rx_timestamp_check(fs->rx_port, timesync_index);
209 /* Swap dest and src mac addresses. */
210 ether_addr_copy(ð_hdr->d_addr, &addr);
211 ether_addr_copy(ð_hdr->s_addr, ð_hdr->d_addr);
212 ether_addr_copy(&addr, ð_hdr->s_addr);
214 /* Forward PTP packet with hardware TX timestamp */
215 mb->ol_flags |= PKT_TX_IEEE1588_TMST;
217 if (rte_eth_tx_burst(fs->rx_port, fs->tx_queue, &mb, 1) == 0) {
218 printf("Port %u sent PTP packet dropped\n", fs->rx_port);
219 fs->fwd_dropped += 1;
220 rte_pktmbuf_free(mb);
225 * Check the TX timestamp.
227 port_ieee1588_tx_timestamp_check(fs->rx_port);
231 port_ieee1588_fwd_begin(portid_t pi)
233 rte_eth_timesync_enable(pi);
237 port_ieee1588_fwd_end(portid_t pi)
239 rte_eth_timesync_disable(pi);
242 struct fwd_engine ieee1588_fwd_engine = {
243 .fwd_mode_name = "ieee1588",
244 .port_fwd_begin = port_ieee1588_fwd_begin,
245 .port_fwd_end = port_ieee1588_fwd_end,
246 .packet_fwd = ieee1588_packet_fwd,