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35 #include <rte_cycles.h>
36 #include <rte_ethdev.h>
41 * The structure of a PTP V2 packet.
43 * Only the minimum fields used by the ieee1588 test are represented.
47 uint8_t version; /**< must be 0x02 */
51 #define PTP_SYNC_MESSAGE 0x0
52 #define PTP_DELAY_REQ_MESSAGE 0x1
53 #define PTP_PATH_DELAY_REQ_MESSAGE 0x2
54 #define PTP_PATH_DELAY_RESP_MESSAGE 0x3
55 #define PTP_FOLLOWUP_MESSAGE 0x8
56 #define PTP_DELAY_RESP_MESSAGE 0x9
57 #define PTP_PATH_DELAY_FOLLOWUP_MESSAGE 0xA
58 #define PTP_ANNOUNCE_MESSAGE 0xB
59 #define PTP_SIGNALLING_MESSAGE 0xC
60 #define PTP_MANAGEMENT_MESSAGE 0xD
63 * Forwarding of IEEE1588 Precise Time Protocol (PTP) packets.
65 * In this mode, packets are received one by one and are expected to be
66 * PTP V2 L2 Ethernet frames (with the specific Ethernet type "0x88F7")
67 * containing PTP "sync" messages (version 2 at offset 1, and message ID
70 * Check that each received packet is a IEEE1588 PTP V2 packet of type
71 * PTP_SYNC_MESSAGE, and that it has been identified and timestamped
73 * Check that the value of the last RX timestamp recorded by the controller
74 * is greater than the previous one.
76 * If everything is OK, send the received packet back on the same port,
77 * requesting for it to be timestamped by the hardware.
78 * Check that the value of the last TX timestamp recorded by the controller
79 * is greater than the previous one.
83 port_ieee1588_rx_timestamp_check(portid_t pi, uint32_t index)
85 struct timespec timestamp = {0, 0};
87 if (rte_eth_timesync_read_rx_timestamp(pi, ×tamp, index) < 0) {
88 printf("Port %u RX timestamp registers not valid\n",
92 printf("Port %u RX timestamp value %lu s %lu ns\n",
93 (unsigned) 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 (unsigned) pi, (unsigned) 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 (unsigned) 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 ptpv2_msg *ptp_hdr;
128 uint32_t timesync_index;
131 * Receive 1 packet at a time.
133 if (rte_eth_rx_burst(fs->rx_port, fs->rx_queue, &mb, 1) == 0)
139 * Check that the received packet is a PTP packet that was detected
142 eth_hdr = rte_pktmbuf_mtod(mb, struct ether_hdr *);
143 eth_type = rte_be_to_cpu_16(eth_hdr->ether_type);
145 if (! (mb->ol_flags & PKT_RX_IEEE1588_PTP)) {
146 if (eth_type == ETHER_TYPE_1588) {
147 printf("Port %u Received PTP packet not filtered"
149 (unsigned) fs->rx_port);
151 printf("Port %u Received non PTP packet type=0x%4x "
153 (unsigned) fs->rx_port, eth_type,
154 (unsigned) mb->pkt_len);
156 rte_pktmbuf_free(mb);
159 if (eth_type != ETHER_TYPE_1588) {
160 printf("Port %u Received NON PTP packet incorrectly"
161 " detected by hardware\n",
162 (unsigned) fs->rx_port);
163 rte_pktmbuf_free(mb);
168 * Check that the received PTP packet is a PTP V2 packet of type
171 ptp_hdr = (struct ptpv2_msg *) (rte_pktmbuf_mtod(mb, char *) +
172 sizeof(struct ether_hdr));
173 if (ptp_hdr->version != 0x02) {
174 printf("Port %u Received PTP V2 Ethernet frame with wrong PTP"
175 " protocol version 0x%x (should be 0x02)\n",
176 (unsigned) fs->rx_port, ptp_hdr->version);
177 rte_pktmbuf_free(mb);
180 if (ptp_hdr->msg_id != PTP_SYNC_MESSAGE) {
181 printf("Port %u Received PTP V2 Ethernet frame with unexpected"
182 " message ID 0x%x (expected 0x0 - PTP_SYNC_MESSAGE)\n",
183 (unsigned) fs->rx_port, ptp_hdr->msg_id);
184 rte_pktmbuf_free(mb);
187 printf("Port %u IEEE1588 PTP V2 SYNC Message filtered by hardware\n",
188 (unsigned) fs->rx_port);
191 * Check that the received PTP packet has been timestamped by the
194 if (! (mb->ol_flags & PKT_RX_IEEE1588_TMST)) {
195 printf("Port %u Received PTP packet not timestamped"
197 (unsigned) fs->rx_port);
198 rte_pktmbuf_free(mb);
202 /* For i40e we need the timesync register index. It is ignored for the
204 timesync_index = mb->timesync & 0x3;
205 /* Read and check the RX timestamp. */
206 port_ieee1588_rx_timestamp_check(fs->rx_port, timesync_index);
208 /* Forward PTP packet with hardware TX timestamp */
209 mb->ol_flags |= PKT_TX_IEEE1588_TMST;
211 if (rte_eth_tx_burst(fs->rx_port, fs->tx_queue, &mb, 1) == 0) {
212 printf("Port %u sent PTP packet dropped\n",
213 (unsigned) fs->rx_port);
214 fs->fwd_dropped += 1;
215 rte_pktmbuf_free(mb);
220 * Check the TX timestamp.
222 port_ieee1588_tx_timestamp_check(fs->rx_port);
226 port_ieee1588_fwd_begin(portid_t pi)
228 rte_eth_timesync_enable(pi);
232 port_ieee1588_fwd_end(portid_t pi)
234 rte_eth_timesync_disable(pi);
237 struct fwd_engine ieee1588_fwd_engine = {
238 .fwd_mode_name = "ieee1588",
239 .port_fwd_begin = port_ieee1588_fwd_begin,
240 .port_fwd_end = port_ieee1588_fwd_end,
241 .packet_fwd = ieee1588_packet_fwd,