1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2015 Intel Corporation
6 #include <linux/if_ether.h>
7 #include <linux/if_vlan.h>
8 #include <linux/virtio_net.h>
9 #include <linux/virtio_ring.h>
10 #include <sys/param.h>
13 #include <rte_ethdev.h>
15 #include <rte_string_fns.h>
17 #include <rte_malloc.h>
23 #include "rte_vhost.h"
25 #include "vxlan_setup.h"
27 #define IPV4_HEADER_LEN 20
28 #define UDP_HEADER_LEN 8
29 #define VXLAN_HEADER_LEN 8
31 #define IP_VERSION 0x40
32 #define IP_HDRLEN 0x05 /* default IP header length == five 32-bits words. */
33 #define IP_DEFTTL 64 /* from RFC 1340. */
34 #define IP_VHL_DEF (IP_VERSION | IP_HDRLEN)
36 #define IP_DN_FRAGMENT_FLAG 0x0040
38 /* Used to compare MAC addresses. */
39 #define MAC_ADDR_CMP 0xFFFFFFFFFFFFULL
41 /* Configurable number of RX/TX ring descriptors */
42 #define RTE_TEST_RX_DESC_DEFAULT 1024
43 #define RTE_TEST_TX_DESC_DEFAULT 512
45 /* Default inner VLAN ID */
46 #define INNER_VLAN_ID 100
49 struct vxlan_conf vxdev;
51 struct ipv4_hdr app_ip_hdr[VXLAN_N_PORTS];
52 struct ether_hdr app_l2_hdr[VXLAN_N_PORTS];
54 /* local VTEP IP address */
55 uint8_t vxlan_multicast_ips[2][4] = { {239, 1, 1, 1 }, {239, 1, 2, 1 } };
57 /* Remote VTEP IP address */
58 uint8_t vxlan_overlay_ips[2][4] = { {192, 168, 10, 1}, {192, 168, 30, 1} };
60 /* Remote VTEP MAC address */
61 uint8_t peer_mac[6] = {0x00, 0x11, 0x01, 0x00, 0x00, 0x01};
63 /* VXLAN RX filter type */
64 uint8_t tep_filter_type[] = {RTE_TUNNEL_FILTER_IMAC_TENID,
65 RTE_TUNNEL_FILTER_IMAC_IVLAN_TENID,
66 RTE_TUNNEL_FILTER_OMAC_TENID_IMAC,};
68 /* Options for configuring ethernet port */
69 static struct rte_eth_conf port_conf = {
72 .offloads = DEV_RX_OFFLOAD_CRC_STRIP,
75 .mq_mode = ETH_MQ_TX_NONE,
76 .offloads = (DEV_TX_OFFLOAD_IPV4_CKSUM |
77 DEV_TX_OFFLOAD_UDP_CKSUM |
78 DEV_TX_OFFLOAD_TCP_CKSUM |
79 DEV_TX_OFFLOAD_SCTP_CKSUM |
80 DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM |
81 DEV_TX_OFFLOAD_TCP_TSO |
82 DEV_TX_OFFLOAD_MULTI_SEGS |
83 DEV_TX_OFFLOAD_VXLAN_TNL_TSO),
88 * The one or two device(s) that belongs to the same tenant ID can
89 * be assigned in a VM.
91 const uint16_t tenant_id_conf[] = {
92 1000, 1000, 1001, 1001, 1002, 1002, 1003, 1003,
93 1004, 1004, 1005, 1005, 1006, 1006, 1007, 1007,
94 1008, 1008, 1009, 1009, 1010, 1010, 1011, 1011,
95 1012, 1012, 1013, 1013, 1014, 1014, 1015, 1015,
96 1016, 1016, 1017, 1017, 1018, 1018, 1019, 1019,
97 1020, 1020, 1021, 1021, 1022, 1022, 1023, 1023,
98 1024, 1024, 1025, 1025, 1026, 1026, 1027, 1027,
99 1028, 1028, 1029, 1029, 1030, 1030, 1031, 1031,
103 * Initialises a given port using global settings and with the rx buffers
104 * coming from the mbuf_pool passed as parameter
107 vxlan_port_init(uint16_t port, struct rte_mempool *mbuf_pool)
111 struct rte_eth_dev_info dev_info;
112 uint16_t rx_rings, tx_rings = (uint16_t)rte_lcore_count();
113 uint16_t rx_ring_size = RTE_TEST_RX_DESC_DEFAULT;
114 uint16_t tx_ring_size = RTE_TEST_TX_DESC_DEFAULT;
115 struct rte_eth_udp_tunnel tunnel_udp;
116 struct rte_eth_rxconf *rxconf;
117 struct rte_eth_txconf *txconf;
118 struct vxlan_conf *pconf = &vxdev;
119 struct rte_eth_conf local_port_conf = port_conf;
121 pconf->dst_port = udp_port;
123 rte_eth_dev_info_get(port, &dev_info);
125 if (dev_info.max_rx_queues > MAX_QUEUES) {
126 rte_exit(EXIT_FAILURE,
127 "please define MAX_QUEUES no less than %u in %s\n",
128 dev_info.max_rx_queues, __FILE__);
131 rxconf = &dev_info.default_rxconf;
132 txconf = &dev_info.default_txconf;
134 if (!rte_eth_dev_is_valid_port(port))
137 rx_rings = nb_devices;
138 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
139 local_port_conf.txmode.offloads |=
140 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
141 /* Configure ethernet device. */
142 retval = rte_eth_dev_configure(port, rx_rings, tx_rings,
147 retval = rte_eth_dev_adjust_nb_rx_tx_desc(port, &rx_ring_size,
152 /* Setup the queues. */
153 rxconf->offloads = local_port_conf.rxmode.offloads;
154 for (q = 0; q < rx_rings; q++) {
155 retval = rte_eth_rx_queue_setup(port, q, rx_ring_size,
156 rte_eth_dev_socket_id(port),
162 txconf->offloads = local_port_conf.txmode.offloads;
163 for (q = 0; q < tx_rings; q++) {
164 retval = rte_eth_tx_queue_setup(port, q, tx_ring_size,
165 rte_eth_dev_socket_id(port),
171 /* Start the device. */
172 retval = rte_eth_dev_start(port);
176 /* Configure UDP port for UDP tunneling */
177 tunnel_udp.udp_port = udp_port;
178 tunnel_udp.prot_type = RTE_TUNNEL_TYPE_VXLAN;
179 retval = rte_eth_dev_udp_tunnel_port_add(port, &tunnel_udp);
182 rte_eth_macaddr_get(port, &ports_eth_addr[port]);
183 RTE_LOG(INFO, PORT, "Port %u MAC: %02"PRIx8" %02"PRIx8" %02"PRIx8
184 " %02"PRIx8" %02"PRIx8" %02"PRIx8"\n",
186 ports_eth_addr[port].addr_bytes[0],
187 ports_eth_addr[port].addr_bytes[1],
188 ports_eth_addr[port].addr_bytes[2],
189 ports_eth_addr[port].addr_bytes[3],
190 ports_eth_addr[port].addr_bytes[4],
191 ports_eth_addr[port].addr_bytes[5]);
193 if (tso_segsz != 0) {
194 struct rte_eth_dev_info dev_info;
195 rte_eth_dev_info_get(port, &dev_info);
196 if ((dev_info.tx_offload_capa & DEV_TX_OFFLOAD_TCP_TSO) == 0)
197 RTE_LOG(WARNING, PORT,
198 "hardware TSO offload is not supported\n");
204 vxlan_rx_process(struct rte_mbuf *pkt)
209 ret = decapsulation(pkt);
215 vxlan_tx_process(uint8_t queue_id, struct rte_mbuf *pkt)
218 encapsulation(pkt, queue_id);
224 * This function learns the MAC address of the device and set init
225 * L2 header and L3 header info.
228 vxlan_link(struct vhost_dev *vdev, struct rte_mbuf *m)
231 struct ether_hdr *pkt_hdr;
232 uint64_t portid = vdev->vid;
235 struct rte_eth_tunnel_filter_conf tunnel_filter_conf;
237 if (unlikely(portid >= VXLAN_N_PORTS)) {
238 RTE_LOG(INFO, VHOST_DATA,
239 "(%d) WARNING: Not configuring device,"
240 "as already have %d ports for VXLAN.",
241 vdev->vid, VXLAN_N_PORTS);
245 /* Learn MAC address of guest device from packet */
246 pkt_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
247 if (is_same_ether_addr(&(pkt_hdr->s_addr), &vdev->mac_address)) {
248 RTE_LOG(INFO, VHOST_DATA,
249 "(%d) WARNING: This device is using an existing"
250 " MAC address and has not been registered.\n",
255 for (i = 0; i < ETHER_ADDR_LEN; i++) {
256 vdev->mac_address.addr_bytes[i] =
257 vxdev.port[portid].vport_mac.addr_bytes[i] =
258 pkt_hdr->s_addr.addr_bytes[i];
259 vxdev.port[portid].peer_mac.addr_bytes[i] = peer_mac[i];
262 memset(&tunnel_filter_conf, 0,
263 sizeof(struct rte_eth_tunnel_filter_conf));
265 ether_addr_copy(&ports_eth_addr[0], &tunnel_filter_conf.outer_mac);
266 tunnel_filter_conf.filter_type = tep_filter_type[filter_idx];
269 ether_addr_copy(&vdev->mac_address, &tunnel_filter_conf.inner_mac);
271 tunnel_filter_conf.queue_id = vdev->rx_q;
272 tunnel_filter_conf.tenant_id = tenant_id_conf[vdev->rx_q];
274 if (tep_filter_type[filter_idx] == RTE_TUNNEL_FILTER_IMAC_IVLAN_TENID)
275 tunnel_filter_conf.inner_vlan = INNER_VLAN_ID;
277 tunnel_filter_conf.tunnel_type = RTE_TUNNEL_TYPE_VXLAN;
279 ret = rte_eth_dev_filter_ctrl(ports[0],
280 RTE_ETH_FILTER_TUNNEL,
282 &tunnel_filter_conf);
284 RTE_LOG(ERR, VHOST_DATA,
285 "%d Failed to add device MAC address to cloud filter\n",
290 /* Print out inner MAC and VNI info. */
291 RTE_LOG(INFO, VHOST_DATA,
292 "(%d) MAC_ADDRESS %02x:%02x:%02x:%02x:%02x:%02x and VNI %d registered\n",
294 vdev->mac_address.addr_bytes[0],
295 vdev->mac_address.addr_bytes[1],
296 vdev->mac_address.addr_bytes[2],
297 vdev->mac_address.addr_bytes[3],
298 vdev->mac_address.addr_bytes[4],
299 vdev->mac_address.addr_bytes[5],
300 tenant_id_conf[vdev->rx_q]);
302 vxdev.port[portid].vport_id = portid;
304 for (i = 0; i < 4; i++) {
306 vxdev.port_ip |= vxlan_multicast_ips[portid][i] << (8 * i);
308 vxdev.port[portid].peer_ip |=
309 vxlan_overlay_ips[portid][i] << (8 * i);
312 vxdev.out_key = tenant_id_conf[vdev->rx_q];
313 ether_addr_copy(&vxdev.port[portid].peer_mac,
314 &app_l2_hdr[portid].d_addr);
315 ether_addr_copy(&ports_eth_addr[0],
316 &app_l2_hdr[portid].s_addr);
317 app_l2_hdr[portid].ether_type = rte_cpu_to_be_16(ETHER_TYPE_IPv4);
319 ip = &app_ip_hdr[portid];
320 ip->version_ihl = IP_VHL_DEF;
321 ip->type_of_service = 0;
322 ip->total_length = 0;
324 ip->fragment_offset = IP_DN_FRAGMENT_FLAG;
325 ip->time_to_live = IP_DEFTTL;
326 ip->next_proto_id = IPPROTO_UDP;
327 ip->hdr_checksum = 0;
328 ip->src_addr = vxdev.port_ip;
329 ip->dst_addr = vxdev.port[portid].peer_ip;
331 /* Set device as ready for RX. */
332 vdev->ready = DEVICE_RX;
338 * Removes cloud filter. Ensures that nothing is adding buffers to the RX
339 * queue before disabling RX on the device.
342 vxlan_unlink(struct vhost_dev *vdev)
344 unsigned i = 0, rx_count;
346 struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
347 struct rte_eth_tunnel_filter_conf tunnel_filter_conf;
349 if (vdev->ready == DEVICE_RX) {
350 memset(&tunnel_filter_conf, 0,
351 sizeof(struct rte_eth_tunnel_filter_conf));
353 ether_addr_copy(&ports_eth_addr[0], &tunnel_filter_conf.outer_mac);
354 ether_addr_copy(&vdev->mac_address, &tunnel_filter_conf.inner_mac);
355 tunnel_filter_conf.tenant_id = tenant_id_conf[vdev->rx_q];
356 tunnel_filter_conf.filter_type = tep_filter_type[filter_idx];
358 if (tep_filter_type[filter_idx] ==
359 RTE_TUNNEL_FILTER_IMAC_IVLAN_TENID)
360 tunnel_filter_conf.inner_vlan = INNER_VLAN_ID;
362 tunnel_filter_conf.queue_id = vdev->rx_q;
363 tunnel_filter_conf.tunnel_type = RTE_TUNNEL_TYPE_VXLAN;
365 ret = rte_eth_dev_filter_ctrl(ports[0],
366 RTE_ETH_FILTER_TUNNEL,
367 RTE_ETH_FILTER_DELETE,
368 &tunnel_filter_conf);
370 RTE_LOG(ERR, VHOST_DATA,
371 "%d Failed to add device MAC address to cloud filter\n",
375 for (i = 0; i < ETHER_ADDR_LEN; i++)
376 vdev->mac_address.addr_bytes[i] = 0;
378 /* Clear out the receive buffers */
379 rx_count = rte_eth_rx_burst(ports[0],
380 (uint16_t)vdev->rx_q,
381 pkts_burst, MAX_PKT_BURST);
384 for (i = 0; i < rx_count; i++)
385 rte_pktmbuf_free(pkts_burst[i]);
387 rx_count = rte_eth_rx_burst(ports[0],
388 (uint16_t)vdev->rx_q,
389 pkts_burst, MAX_PKT_BURST);
391 vdev->ready = DEVICE_MAC_LEARNING;
395 /* Transmit packets after encapsulating */
397 vxlan_tx_pkts(uint16_t port_id, uint16_t queue_id,
398 struct rte_mbuf **tx_pkts, uint16_t nb_pkts) {
402 for (i = 0; i < nb_pkts; i++)
403 vxlan_tx_process(queue_id, tx_pkts[i]);
405 ret = rte_eth_tx_burst(port_id, queue_id, tx_pkts, nb_pkts);
410 /* Check for decapsulation and pass packets directly to VIRTIO device */
412 vxlan_rx_pkts(int vid, struct rte_mbuf **pkts_burst, uint32_t rx_count)
417 struct rte_mbuf *pkts_valid[rx_count];
419 for (i = 0; i < rx_count; i++) {
422 &dev_statistics[vid].rx_bad_ip_csum,
423 (pkts_burst[i]->ol_flags & PKT_RX_IP_CKSUM_BAD)
426 &dev_statistics[vid].rx_bad_ip_csum,
427 (pkts_burst[i]->ol_flags & PKT_RX_L4_CKSUM_BAD)
430 ret = vxlan_rx_process(pkts_burst[i]);
431 if (unlikely(ret < 0))
434 pkts_valid[count] = pkts_burst[i];
438 ret = rte_vhost_enqueue_burst(vid, VIRTIO_RXQ, pkts_valid, count);