#include <sys/ioctl.h>
#include "byte-order.h"
+#include "csum.h"
#include "daemon.h"
#include "dirs.h"
#include "dpif.h"
+#include "dynamic-string.h"
+#include "flow.h"
#include "hash.h"
#include "hmap.h"
#include "list.h"
#include "netdev-provider.h"
+#include "odp-netlink.h"
#include "ofpbuf.h"
#include "ovs-router.h"
#include "packets.h"
+#include "packet-dpif.h"
#include "poll-loop.h"
#include "route-table.h"
#include "shash.h"
#include "socket-util.h"
#include "vlog.h"
+#include "unaligned.h"
+#include "unixctl.h"
+#include "util.h"
VLOG_DEFINE_THIS_MODULE(netdev_vport);
+static struct vlog_rate_limit err_rl = VLOG_RATE_LIMIT_INIT(60, 5);
#define GENEVE_DST_PORT 6081
#define VXLAN_DST_PORT 4789
#define LISP_DST_PORT 4341
+#define VXLAN_HLEN (sizeof(struct eth_header) + \
+ sizeof(struct ip_header) + \
+ sizeof(struct udp_header) + \
+ sizeof(struct vxlanhdr))
+
#define DEFAULT_TTL 64
struct netdev_vport {
static int get_tunnel_config(const struct netdev *, struct smap *args);
static bool tunnel_check_status_change__(struct netdev_vport *);
+static uint16_t tnl_udp_port_min = 32768;
+static uint16_t tnl_udp_port_max = 61000;
+
static bool
is_vport_class(const struct netdev_class *class)
{
static int
netdev_vport_construct(struct netdev *netdev_)
{
- struct netdev_vport *netdev = netdev_vport_cast(netdev_);
+ struct netdev_vport *dev = netdev_vport_cast(netdev_);
+ const char *type = netdev_get_type(netdev_);
- ovs_mutex_init(&netdev->mutex);
- eth_addr_random(netdev->etheraddr);
+ ovs_mutex_init(&dev->mutex);
+ eth_addr_random(dev->etheraddr);
+
+ /* Add a default destination port for tunnel ports if none specified. */
+ if (!strcmp(type, "geneve")) {
+ dev->tnl_cfg.dst_port = htons(GENEVE_DST_PORT);
+ } else if (!strcmp(type, "vxlan")) {
+ dev->tnl_cfg.dst_port = htons(VXLAN_DST_PORT);
+ } else if (!strcmp(type, "lisp")) {
+ dev->tnl_cfg.dst_port = htons(LISP_DST_PORT);
+ }
route_table_register();
ipsec_mech_set = false;
memset(&tnl_cfg, 0, sizeof tnl_cfg);
+ /* Add a default destination port for tunnel ports if none specified. */
+ if (!strcmp(type, "geneve")) {
+ tnl_cfg.dst_port = htons(GENEVE_DST_PORT);
+ }
+
+ if (!strcmp(type, "vxlan")) {
+ tnl_cfg.dst_port = htons(VXLAN_DST_PORT);
+ }
+
+ if (!strcmp(type, "lisp")) {
+ tnl_cfg.dst_port = htons(LISP_DST_PORT);
+ }
+
needs_dst_port = netdev_vport_needs_dst_port(dev_);
tnl_cfg.ipsec = strstr(type, "ipsec");
tnl_cfg.dont_fragment = true;
}
}
- /* Add a default destination port for tunnel ports if none specified. */
- if (!strcmp(type, "geneve") && !tnl_cfg.dst_port) {
- tnl_cfg.dst_port = htons(GENEVE_DST_PORT);
- }
-
- if (!strcmp(type, "vxlan") && !tnl_cfg.dst_port) {
- tnl_cfg.dst_port = htons(VXLAN_DST_PORT);
- }
-
- if (!strcmp(type, "lisp") && !tnl_cfg.dst_port) {
- tnl_cfg.dst_port = htons(LISP_DST_PORT);
- }
-
if (tnl_cfg.ipsec) {
static struct ovs_mutex mutex = OVS_MUTEX_INITIALIZER;
static pid_t pid = 0;
return 0;
}
+
+\f
+/* Tunnel push pop ops. */
+
+static struct ip_header *
+ip_hdr(void *eth)
+{
+ return (void *)((char *)eth + sizeof (struct eth_header));
+}
+
+static struct gre_base_hdr *
+gre_hdr(struct ip_header *ip)
+{
+ return (void *)((char *)ip + sizeof (struct ip_header));
+}
+
+static void *
+ip_extract_tnl_md(struct ofpbuf *packet, struct flow_tnl *tnl)
+{
+ struct ip_header *nh;
+ void *l4;
+
+ nh = ofpbuf_l3(packet);
+ l4 = ofpbuf_l4(packet);
+
+ if (!nh || !l4) {
+ return NULL;
+ }
+
+ tnl->ip_src = get_16aligned_be32(&nh->ip_src);
+ tnl->ip_dst = get_16aligned_be32(&nh->ip_dst);
+ tnl->ip_tos = nh->ip_tos;
+
+ return l4;
+}
+
+/* Pushes the 'size' bytes of 'header' into the headroom of 'packet',
+ * reallocating the packet if necessary. 'header' should contain an Ethernet
+ * header, followed by an IPv4 header (without options), and an L4 header.
+ *
+ * This function sets the IP header's ip_tot_len field (which should be zeroed
+ * as part of 'header') and puts its value into '*ip_tot_size' as well. Also
+ * updates IP header checksum.
+ *
+ * Return pointer to the L4 header added to 'packet'. */
+static void *
+push_ip_header(struct ofpbuf *packet,
+ const void *header, int size, int *ip_tot_size)
+{
+ struct eth_header *eth;
+ struct ip_header *ip;
+
+ eth = ofpbuf_push_uninit(packet, size);
+ *ip_tot_size = ofpbuf_size(packet) - sizeof (struct eth_header);
+
+ memcpy(eth, header, size);
+ ip = ip_hdr(eth);
+ ip->ip_tot_len = htons(*ip_tot_size);
+
+
+ ip->ip_csum = recalc_csum16(ip->ip_csum, 0, ip->ip_tot_len);
+
+ return ip + 1;
+}
+
+static int
+gre_header_len(ovs_be16 flags)
+{
+ int hlen = sizeof(struct eth_header) +
+ sizeof(struct ip_header) + 4;
+
+ if (flags & htons(GRE_CSUM)) {
+ hlen += 4;
+ }
+ if (flags & htons(GRE_KEY)) {
+ hlen += 4;
+ }
+ if (flags & htons(GRE_SEQ)) {
+ hlen += 4;
+ }
+ return hlen;
+}
+
+static int
+parse_gre_header(struct ofpbuf *packet,
+ struct flow_tnl *tnl)
+{
+ const struct gre_base_hdr *greh;
+ ovs_16aligned_be32 *options;
+ int hlen;
+
+ greh = ip_extract_tnl_md(packet, tnl);
+ if (!greh) {
+ return -EINVAL;
+ }
+
+ if (greh->flags & ~(htons(GRE_CSUM | GRE_KEY | GRE_SEQ))) {
+ return -EINVAL;
+ }
+
+ hlen = gre_header_len(greh->flags);
+ if (hlen > ofpbuf_size(packet)) {
+ return -EINVAL;
+ }
+
+ options = (ovs_16aligned_be32 *)(greh + 1);
+ if (greh->flags & htons(GRE_CSUM)) {
+ ovs_be16 pkt_csum;
+
+ pkt_csum = csum(greh, ofpbuf_size(packet) -
+ ((const unsigned char *)greh -
+ (const unsigned char *)ofpbuf_l2(packet)));
+ if (pkt_csum) {
+ return -EINVAL;
+ }
+ tnl->flags = FLOW_TNL_F_CSUM;
+ options++;
+ }
+
+ if (greh->flags & htons(GRE_KEY)) {
+ tnl->tun_id = (OVS_FORCE ovs_be64) ((OVS_FORCE uint64_t)(get_16aligned_be32(options)) << 32);
+ tnl->flags |= FLOW_TNL_F_KEY;
+ options++;
+ }
+
+ if (greh->flags & htons(GRE_SEQ)) {
+ options++;
+ }
+
+ return hlen;
+}
+
+static void
+reset_tnl_md(struct pkt_metadata *md)
+{
+ memset(&md->tunnel, 0, sizeof(md->tunnel));
+}
+
+static void
+gre_extract_md(struct dpif_packet *dpif_pkt)
+{
+ struct ofpbuf *packet = &dpif_pkt->ofpbuf;
+ struct pkt_metadata *md = &dpif_pkt->md;
+ struct flow_tnl *tnl = &md->tunnel;
+ int hlen = sizeof(struct eth_header) +
+ sizeof(struct ip_header) + 4;
+
+ memset(md, 0, sizeof *md);
+ if (hlen > ofpbuf_size(packet)) {
+ return;
+ }
+
+ hlen = parse_gre_header(packet, tnl);
+ if (hlen < 0) {
+ reset_tnl_md(md);
+ }
+
+ ofpbuf_reset_packet(packet, hlen);
+}
+
+static int
+netdev_gre_pop_header(struct netdev *netdev_ OVS_UNUSED,
+ struct dpif_packet **pkt, int cnt)
+{
+ int i;
+
+ for (i = 0; i < cnt; i++) {
+ gre_extract_md(pkt[i]);
+ }
+ return 0;
+}
+
+static void
+netdev_gre_push_header__(struct ofpbuf *packet,
+ const void *header, int size)
+{
+ struct gre_base_hdr *greh;
+ int ip_tot_size;
+
+ greh = push_ip_header(packet, header, size, &ip_tot_size);
+
+ if (greh->flags & htons(GRE_CSUM)) {
+ ovs_16aligned_be32 *options = (ovs_16aligned_be32 *) (greh + 1);
+
+ put_16aligned_be32(options,
+ (OVS_FORCE ovs_be32) csum(greh, ip_tot_size - sizeof (struct ip_header)));
+ }
+}
+
+static int
+netdev_gre_push_header(const struct netdev *netdev OVS_UNUSED,
+ struct dpif_packet **packets, int cnt,
+ const struct ovs_action_push_tnl *data)
+{
+ int i;
+
+ for (i = 0; i < cnt; i++) {
+ netdev_gre_push_header__(&packets[i]->ofpbuf,
+ data->header, data->header_len);
+ packets[i]->md = PKT_METADATA_INITIALIZER(u32_to_odp(data->out_port));
+ }
+ return 0;
+}
+
+
+static int
+netdev_gre_build_header(const struct netdev *netdev,
+ struct ovs_action_push_tnl *data)
+{
+ struct netdev_vport *dev = netdev_vport_cast(netdev);
+ struct netdev_tunnel_config *tnl_cfg;
+ struct ip_header *ip;
+ struct gre_base_hdr *greh;
+ ovs_16aligned_be32 *options;
+ int hlen;
+
+ /* XXX: RCUfy tnl_cfg. */
+ ovs_mutex_lock(&dev->mutex);
+ tnl_cfg = &dev->tnl_cfg;
+
+ ip = ip_hdr(data->header);
+ ip->ip_proto = IPPROTO_GRE;
+
+ greh = gre_hdr(ip);
+ greh->protocol = htons(ETH_TYPE_TEB);
+ greh->flags = 0;
+
+ options = (ovs_16aligned_be32 *) (greh + 1);
+ if (tnl_cfg->csum) {
+ greh->flags |= htons(GRE_CSUM);
+ put_16aligned_be32(options, 0);
+ options++;
+ }
+
+ if (tnl_cfg->out_key_present) {
+ greh->flags |= htons(GRE_KEY);
+ put_16aligned_be32(options, (OVS_FORCE ovs_be32)
+ ((OVS_FORCE uint64_t) tnl_cfg->out_key >> 32));
+ options++;
+ }
+
+ ovs_mutex_unlock(&dev->mutex);
+
+ hlen = (uint8_t *) options - (uint8_t *) greh;
+
+ data->header_len = sizeof(struct eth_header) +
+ sizeof(struct ip_header) + hlen;
+ data->tnl_type = OVS_VPORT_TYPE_GRE;
+ return 0;
+}
+
+static void
+vxlan_extract_md(struct dpif_packet *dpif_pkt)
+{
+ struct ofpbuf *packet = &dpif_pkt->ofpbuf;
+ struct pkt_metadata *md = &dpif_pkt->md;
+ struct flow_tnl *tnl = &md->tunnel;
+ struct udp_header *udp;
+ struct vxlanhdr *vxh;
+
+ memset(md, 0, sizeof *md);
+ if (VXLAN_HLEN > ofpbuf_size(packet)) {
+ return;
+ }
+
+ udp = ip_extract_tnl_md(packet, tnl);
+ if (!udp) {
+ return;
+ }
+ vxh = (struct vxlanhdr *) (udp + 1);
+
+ if (get_16aligned_be32(&vxh->vx_flags) != htonl(VXLAN_FLAGS) ||
+ (get_16aligned_be32(&vxh->vx_vni) & htonl(0xff))) {
+ VLOG_WARN_RL(&err_rl, "invalid vxlan flags=%#x vni=%#x\n",
+ ntohl(get_16aligned_be32(&vxh->vx_flags)),
+ ntohl(get_16aligned_be32(&vxh->vx_vni)));
+ reset_tnl_md(md);
+ return;
+ }
+ tnl->tp_src = udp->udp_src;
+ tnl->tp_dst = udp->udp_dst;
+ tnl->tun_id = htonll(ntohl(get_16aligned_be32(&vxh->vx_vni)) >> 8);
+
+ ofpbuf_reset_packet(packet, VXLAN_HLEN);
+}
+
+static int
+netdev_vxlan_pop_header(struct netdev *netdev_ OVS_UNUSED,
+ struct dpif_packet **pkt, int cnt)
+{
+ int i;
+
+ for (i = 0; i < cnt; i++) {
+ vxlan_extract_md(pkt[i]);
+ }
+ return 0;
+}
+
+static int
+netdev_vxlan_build_header(const struct netdev *netdev,
+ struct ovs_action_push_tnl *data)
+{
+ struct netdev_vport *dev = netdev_vport_cast(netdev);
+ struct netdev_tunnel_config *tnl_cfg;
+ struct ip_header *ip;
+ struct udp_header *udp;
+ struct vxlanhdr *vxh;
+
+ /* XXX: RCUfy tnl_cfg. */
+ ovs_mutex_lock(&dev->mutex);
+ tnl_cfg = &dev->tnl_cfg;
+
+ ip = ip_hdr(data->header);
+ ip->ip_proto = IPPROTO_UDP;
+
+ udp = (struct udp_header *) (ip + 1);
+ udp->udp_dst = tnl_cfg->dst_port;
+
+ vxh = (struct vxlanhdr *) (udp + 1);
+ put_16aligned_be32(&vxh->vx_flags, htonl(VXLAN_FLAGS));
+ put_16aligned_be32(&vxh->vx_vni, htonl(ntohll(tnl_cfg->out_key) << 8));
+
+ ovs_mutex_unlock(&dev->mutex);
+ data->header_len = VXLAN_HLEN;
+ data->tnl_type = OVS_VPORT_TYPE_VXLAN;
+ return 0;
+}
+
+static ovs_be16
+get_src_port(struct dpif_packet *packet)
+{
+ uint32_t hash;
+
+ hash = dpif_packet_get_dp_hash(packet);
+
+ return htons((((uint64_t) hash * (tnl_udp_port_max - tnl_udp_port_min)) >> 32) +
+ tnl_udp_port_min);
+}
+
+static void
+netdev_vxlan_push_header__(struct dpif_packet *packet,
+ const void *header, int size)
+{
+ struct udp_header *udp;
+ int ip_tot_size;
+
+ udp = push_ip_header(&packet->ofpbuf, header, size, &ip_tot_size);
+
+ /* set udp src port */
+ udp->udp_src = get_src_port(packet);
+ udp->udp_len = htons(ip_tot_size - sizeof (struct ip_header));
+ /* udp_csum is zero */
+}
+
+static int
+netdev_vxlan_push_header(const struct netdev *netdev OVS_UNUSED,
+ struct dpif_packet **packets, int cnt,
+ const struct ovs_action_push_tnl *data)
+{
+ int i;
+
+ for (i = 0; i < cnt; i++) {
+ netdev_vxlan_push_header__(packets[i],
+ data->header, VXLAN_HLEN);
+ packets[i]->md = PKT_METADATA_INITIALIZER(u32_to_odp(data->out_port));
+ }
+ return 0;
+}
+
+static void
+netdev_vport_range(struct unixctl_conn *conn, int argc,
+ const char *argv[], void *aux OVS_UNUSED)
+{
+ int val1, val2;
+
+ if (argc < 3) {
+ struct ds ds = DS_EMPTY_INITIALIZER;
+
+ ds_put_format(&ds, "Tunnel UDP source port range: %"PRIu16"-%"PRIu16"\n",
+ tnl_udp_port_min, tnl_udp_port_max);
+
+ unixctl_command_reply(conn, ds_cstr(&ds));
+ ds_destroy(&ds);
+ return;
+ }
+
+ if (argc != 3) {
+ return;
+ }
+
+ val1 = atoi(argv[1]);
+ if (val1 <= 0 || val1 > UINT16_MAX) {
+ unixctl_command_reply(conn, "Invalid min.");
+ return;
+ }
+ val2 = atoi(argv[2]);
+ if (val2 <= 0 || val2 > UINT16_MAX) {
+ unixctl_command_reply(conn, "Invalid max.");
+ return;
+ }
+
+ if (val1 > val2) {
+ tnl_udp_port_min = val2;
+ tnl_udp_port_max = val1;
+ } else {
+ tnl_udp_port_min = val1;
+ tnl_udp_port_max = val2;
+ }
+ seq_change(tnl_conf_seq);
+
+ unixctl_command_reply(conn, "OK");
+}
+
\f
#define VPORT_FUNCTIONS(GET_CONFIG, SET_CONFIG, \
- GET_TUNNEL_CONFIG, GET_STATUS) \
+ GET_TUNNEL_CONFIG, GET_STATUS, \
+ BUILD_HEADER, \
+ PUSH_HEADER, POP_HEADER) \
NULL, \
netdev_vport_run, \
netdev_vport_wait, \
GET_CONFIG, \
SET_CONFIG, \
GET_TUNNEL_CONFIG, \
+ BUILD_HEADER, \
+ PUSH_HEADER, \
+ POP_HEADER, \
NULL, /* get_numa_id */ \
NULL, /* set_multiq */ \
\
NULL, /* rx_wait */ \
NULL, /* rx_drain */
-#define TUNNEL_CLASS(NAME, DPIF_PORT) \
- { DPIF_PORT, \
- { NAME, VPORT_FUNCTIONS(get_tunnel_config, \
- set_tunnel_config, \
- get_netdev_tunnel_config, \
- tunnel_get_status) }}
+
+#define TUNNEL_CLASS(NAME, DPIF_PORT, BUILD_HEADER, PUSH_HEADER, POP_HEADER) \
+ { DPIF_PORT, \
+ { NAME, VPORT_FUNCTIONS(get_tunnel_config, \
+ set_tunnel_config, \
+ get_netdev_tunnel_config, \
+ tunnel_get_status, \
+ BUILD_HEADER, PUSH_HEADER, POP_HEADER) }}
void
netdev_vport_tunnel_register(void)
/* The name of the dpif_port should be short enough to accomodate adding
* a port number to the end if one is necessary. */
static const struct vport_class vport_classes[] = {
- TUNNEL_CLASS("geneve", "genev_sys"),
- TUNNEL_CLASS("gre", "gre_sys"),
- TUNNEL_CLASS("ipsec_gre", "gre_sys"),
- TUNNEL_CLASS("gre64", "gre64_sys"),
- TUNNEL_CLASS("ipsec_gre64", "gre64_sys"),
- TUNNEL_CLASS("vxlan", "vxlan_sys"),
- TUNNEL_CLASS("lisp", "lisp_sys")
+ TUNNEL_CLASS("geneve", "genev_sys", NULL, NULL, NULL),
+ TUNNEL_CLASS("gre", "gre_sys", netdev_gre_build_header,
+ netdev_gre_push_header,
+ netdev_gre_pop_header),
+ TUNNEL_CLASS("ipsec_gre", "gre_sys", NULL, NULL, NULL),
+ TUNNEL_CLASS("gre64", "gre64_sys", NULL, NULL, NULL),
+ TUNNEL_CLASS("ipsec_gre64", "gre64_sys", NULL, NULL, NULL),
+ TUNNEL_CLASS("vxlan", "vxlan_sys", netdev_vxlan_build_header,
+ netdev_vxlan_push_header,
+ netdev_vxlan_pop_header),
+ TUNNEL_CLASS("lisp", "lisp_sys", NULL, NULL, NULL)
};
static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER;
for (i = 0; i < ARRAY_SIZE(vport_classes); i++) {
netdev_register_provider(&vport_classes[i].netdev_class);
}
+
+ unixctl_command_register("tnl/egress_port_range", "min max", 0, 2,
+ netdev_vport_range, NULL);
+
ovsthread_once_done(&once);
}
}
{ "patch", VPORT_FUNCTIONS(get_patch_config,
set_patch_config,
NULL,
- NULL) }};
+ NULL, NULL, NULL, NULL) }};
netdev_register_provider(&patch_class.netdev_class);
}
projects / cascardo / ovs.git / blobdiff