X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Fnetdev-vport.c;h=c214bf7132e9327fb64507d5a460bbd4774f10bb;hb=41ca1e0afb4b261a217c9fdaf672ef606e8434f9;hp=cf475b2427f83b8bcf34e46b473dcb83b7175460;hpb=14622f22abd93ca464c9be1b6b58d6f0fb2bb186;p=sliver-openvswitch.git diff --git a/lib/netdev-vport.c b/lib/netdev-vport.c index cf475b242..c214bf713 100644 --- a/lib/netdev-vport.c +++ b/lib/netdev-vport.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2010, 2011 Nicira Networks. + * Copyright (c) 2010, 2011, 2012, 2013 Nicira, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -21,26 +21,20 @@ #include #include #include -#include #include #include #include "byte-order.h" #include "daemon.h" #include "dirs.h" -#include "dpif-linux.h" +#include "dpif.h" #include "hash.h" #include "hmap.h" #include "list.h" -#include "netdev-linux.h" #include "netdev-provider.h" -#include "netlink.h" -#include "netlink-notifier.h" -#include "netlink-socket.h" #include "ofpbuf.h" -#include "openvswitch/datapath-protocol.h" -#include "openvswitch/tunnel.h" #include "packets.h" +#include "poll-loop.h" #include "route-table.h" #include "shash.h" #include "socket-util.h" @@ -48,384 +42,275 @@ VLOG_DEFINE_THIS_MODULE(netdev_vport); -struct netdev_dev_vport { - struct netdev_dev netdev_dev; - struct ofpbuf *options; - int dp_ifindex; /* -1 if unknown. */ - uint32_t port_no; /* UINT32_MAX if unknown. */ - unsigned int change_seq; -}; +#define VXLAN_DST_PORT 4789 +#define LISP_DST_PORT 4341 + +#define DEFAULT_TTL 64 struct netdev_vport { - struct netdev netdev; + struct netdev up; + + /* Protects all members below. */ + struct ovs_mutex mutex; + + uint8_t etheraddr[ETH_ADDR_LEN]; + struct netdev_stats stats; + + /* Tunnels. */ + struct netdev_tunnel_config tnl_cfg; + char egress_iface[IFNAMSIZ]; + bool carrier_status; + + /* Patch Ports. */ + char *peer; }; struct vport_class { - enum ovs_vport_type type; + const char *dpif_port; struct netdev_class netdev_class; - int (*parse_config)(const char *name, const char *type, - const struct shash *args, struct ofpbuf *options); - int (*unparse_config)(const char *name, const char *type, - const struct nlattr *options, size_t options_len, - struct shash *args); }; -static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20); - -static int netdev_vport_create(const struct netdev_class *, const char *, - struct netdev_dev **); -static void netdev_vport_poll_notify(const struct netdev *); -static int tnl_port_config_from_nlattr(const struct nlattr *options, - size_t options_len, - struct nlattr *a[OVS_TUNNEL_ATTR_MAX + 1]); +/* Last read of the route-table's change number. */ +static uint64_t rt_change_seqno; -static const char *netdev_vport_get_tnl_iface(const struct netdev *netdev); +static int netdev_vport_construct(struct netdev *); +static int get_patch_config(const struct netdev *netdev, struct smap *args); +static int get_tunnel_config(const struct netdev *, struct smap *args); +static bool tunnel_check_status_change__(struct netdev_vport *); static bool is_vport_class(const struct netdev_class *class) { - return class->create == netdev_vport_create; + return class->construct == netdev_vport_construct; +} + +bool +netdev_vport_is_vport_class(const struct netdev_class *class) +{ + return is_vport_class(class); } static const struct vport_class * vport_class_cast(const struct netdev_class *class) { - assert(is_vport_class(class)); + ovs_assert(is_vport_class(class)); return CONTAINER_OF(class, struct vport_class, netdev_class); } -static struct netdev_dev_vport * -netdev_dev_vport_cast(const struct netdev_dev *netdev_dev) +static struct netdev_vport * +netdev_vport_cast(const struct netdev *netdev) { - assert(is_vport_class(netdev_dev_get_class(netdev_dev))); - return CONTAINER_OF(netdev_dev, struct netdev_dev_vport, netdev_dev); + ovs_assert(is_vport_class(netdev_get_class(netdev))); + return CONTAINER_OF(netdev, struct netdev_vport, up); } -static struct netdev_vport * -netdev_vport_cast(const struct netdev *netdev) +static const struct netdev_tunnel_config * +get_netdev_tunnel_config(const struct netdev *netdev) { - struct netdev_dev *netdev_dev = netdev_get_dev(netdev); - assert(is_vport_class(netdev_dev_get_class(netdev_dev))); - return CONTAINER_OF(netdev, struct netdev_vport, netdev); + return &netdev_vport_cast(netdev)->tnl_cfg; } -/* If 'netdev' is a vport netdev, returns an ofpbuf that contains Netlink - * options to include in OVS_VPORT_ATTR_OPTIONS for configuring that vport. - * Otherwise returns NULL. */ -const struct ofpbuf * -netdev_vport_get_options(const struct netdev *netdev) +bool +netdev_vport_is_patch(const struct netdev *netdev) { - const struct netdev_dev *dev = netdev_get_dev(netdev); + const struct netdev_class *class = netdev_get_class(netdev); - return (is_vport_class(netdev_dev_get_class(dev)) - ? netdev_dev_vport_cast(dev)->options - : NULL); + return class->get_config == get_patch_config; } -enum ovs_vport_type -netdev_vport_get_vport_type(const struct netdev *netdev) +bool +netdev_vport_is_layer3(const struct netdev *dev) { - const struct netdev_dev *dev = netdev_get_dev(netdev); - const struct netdev_class *class = netdev_dev_get_class(dev); + const char *type = netdev_get_type(dev); - return (is_vport_class(class) ? vport_class_cast(class)->type - : class == &netdev_internal_class ? OVS_VPORT_TYPE_INTERNAL - : class == &netdev_linux_class ? OVS_VPORT_TYPE_NETDEV - : OVS_VPORT_TYPE_UNSPEC); + return (!strcmp("lisp", type)); } -const char * -netdev_vport_get_netdev_type(const struct dpif_linux_vport *vport) +static bool +netdev_vport_needs_dst_port(const struct netdev *dev) { - struct nlattr *a[OVS_TUNNEL_ATTR_MAX + 1]; + const struct netdev_class *class = netdev_get_class(dev); + const char *type = netdev_get_type(dev); - switch (vport->type) { - case OVS_VPORT_TYPE_UNSPEC: - break; + return (class->get_config == get_tunnel_config && + (!strcmp("vxlan", type) || !strcmp("lisp", type))); +} - case OVS_VPORT_TYPE_NETDEV: - return "system"; +const char * +netdev_vport_class_get_dpif_port(const struct netdev_class *class) +{ + return is_vport_class(class) ? vport_class_cast(class)->dpif_port : NULL; +} - case OVS_VPORT_TYPE_INTERNAL: - return "internal"; +const char * +netdev_vport_get_dpif_port(const struct netdev *netdev, + char namebuf[], size_t bufsize) +{ + if (netdev_vport_needs_dst_port(netdev)) { + const struct netdev_vport *vport = netdev_vport_cast(netdev); + const char *type = netdev_get_type(netdev); + + /* + * Note: IFNAMSIZ is 16 bytes long. The maximum length of a VXLAN + * or LISP port name below is 15 or 14 bytes respectively. Still, + * assert here on the size of strlen(type) in case that changes + * in the future. + */ + BUILD_ASSERT(NETDEV_VPORT_NAME_BUFSIZE >= IFNAMSIZ); + ovs_assert(strlen(type) + 10 < IFNAMSIZ); + snprintf(namebuf, bufsize, "%s_sys_%d", type, + ntohs(vport->tnl_cfg.dst_port)); + return namebuf; + } else { + const struct netdev_class *class = netdev_get_class(netdev); + const char *dpif_port = netdev_vport_class_get_dpif_port(class); + return dpif_port ? dpif_port : netdev_get_name(netdev); + } +} - case OVS_VPORT_TYPE_PATCH: - return "patch"; +char * +netdev_vport_get_dpif_port_strdup(const struct netdev *netdev) +{ + char namebuf[NETDEV_VPORT_NAME_BUFSIZE]; - case OVS_VPORT_TYPE_GRE: - if (tnl_port_config_from_nlattr(vport->options, vport->options_len, - a)) { - break; - } - return (nl_attr_get_u32(a[OVS_TUNNEL_ATTR_FLAGS]) & TNL_F_IPSEC - ? "ipsec_gre" : "gre"); + return xstrdup(netdev_vport_get_dpif_port(netdev, namebuf, + sizeof namebuf)); +} + +/* Whenever the route-table change number is incremented, + * netdev_vport_route_changed() should be called to update + * the corresponding tunnel interface status. */ +static void +netdev_vport_route_changed(void) +{ + struct netdev **vports; + size_t i, n_vports; - case OVS_VPORT_TYPE_CAPWAP: - return "capwap"; + vports = netdev_get_vports(&n_vports); + for (i = 0; i < n_vports; i++) { + struct netdev *netdev_ = vports[i]; + struct netdev_vport *netdev = netdev_vport_cast(netdev_); - case __OVS_VPORT_TYPE_MAX: - break; + ovs_mutex_lock(&netdev->mutex); + /* Finds all tunnel vports. */ + if (netdev->tnl_cfg.ip_dst) { + if (tunnel_check_status_change__(netdev)) { + netdev_change_seq_changed(netdev_); + } + } + netdev_close(netdev_); + ovs_mutex_unlock(&netdev->mutex); } - VLOG_WARN_RL(&rl, "dp%d: port `%s' has unsupported type %u", - vport->dp_ifindex, vport->name, (unsigned int) vport->type); - return "unknown"; + free(vports); +} + +static struct netdev * +netdev_vport_alloc(void) +{ + struct netdev_vport *netdev = xzalloc(sizeof *netdev); + return &netdev->up; } static int -netdev_vport_create(const struct netdev_class *netdev_class, const char *name, - struct netdev_dev **netdev_devp) +netdev_vport_construct(struct netdev *netdev_) { - struct netdev_dev_vport *dev; + struct netdev_vport *netdev = netdev_vport_cast(netdev_); - dev = xmalloc(sizeof *dev); - netdev_dev_init(&dev->netdev_dev, name, netdev_class); - dev->options = NULL; - dev->dp_ifindex = -1; - dev->port_no = UINT32_MAX; - dev->change_seq = 1; + ovs_mutex_init(&netdev->mutex); + eth_addr_random(netdev->etheraddr); - *netdev_devp = &dev->netdev_dev; route_table_register(); return 0; } static void -netdev_vport_destroy(struct netdev_dev *netdev_dev_) +netdev_vport_destruct(struct netdev *netdev_) { - struct netdev_dev_vport *netdev_dev = netdev_dev_vport_cast(netdev_dev_); + struct netdev_vport *netdev = netdev_vport_cast(netdev_); route_table_unregister(); - free(netdev_dev); -} - -static int -netdev_vport_open(struct netdev_dev *netdev_dev_, struct netdev **netdevp) -{ - struct netdev_vport *netdev; - - netdev = xmalloc(sizeof *netdev); - netdev_init(&netdev->netdev, netdev_dev_); - - *netdevp = &netdev->netdev; - return 0; + free(netdev->peer); + ovs_mutex_destroy(&netdev->mutex); } static void -netdev_vport_close(struct netdev *netdev_) +netdev_vport_dealloc(struct netdev *netdev_) { struct netdev_vport *netdev = netdev_vport_cast(netdev_); free(netdev); } static int -netdev_vport_get_config(struct netdev_dev *dev_, struct shash *args) -{ - const struct netdev_class *netdev_class = netdev_dev_get_class(dev_); - const struct vport_class *vport_class = vport_class_cast(netdev_class); - struct netdev_dev_vport *dev = netdev_dev_vport_cast(dev_); - const char *name = netdev_dev_get_name(dev_); - int error; - - if (!dev->options) { - struct dpif_linux_vport reply; - struct ofpbuf *buf; - - error = dpif_linux_vport_get(name, &reply, &buf); - if (error) { - VLOG_ERR_RL(&rl, "%s: vport query failed (%s)", - name, strerror(error)); - return error; - } - - dev->options = ofpbuf_clone_data(reply.options, reply.options_len); - dev->dp_ifindex = reply.dp_ifindex; - dev->port_no = reply.port_no; - ofpbuf_delete(buf); - } - - error = vport_class->unparse_config(name, netdev_class->type, - dev->options->data, - dev->options->size, - args); - if (error) { - VLOG_ERR_RL(&rl, "%s: failed to parse kernel config (%s)", - name, strerror(error)); - } - return error; -} - -static int -netdev_vport_set_config(struct netdev_dev *dev_, const struct shash *args) -{ - const struct netdev_class *netdev_class = netdev_dev_get_class(dev_); - const struct vport_class *vport_class = vport_class_cast(netdev_class); - struct netdev_dev_vport *dev = netdev_dev_vport_cast(dev_); - const char *name = netdev_dev_get_name(dev_); - struct ofpbuf *options; - int error; - - options = ofpbuf_new(64); - error = vport_class->parse_config(name, netdev_dev_get_type(dev_), - args, options); - if (!error - && (!dev->options - || options->size != dev->options->size - || memcmp(options->data, dev->options->data, options->size))) { - struct dpif_linux_vport vport; - - dpif_linux_vport_init(&vport); - vport.cmd = OVS_VPORT_CMD_SET; - vport.name = name; - vport.options = options->data; - vport.options_len = options->size; - error = dpif_linux_vport_transact(&vport, NULL, NULL); - if (!error || error == ENODEV) { - /* Either reconfiguration succeeded or this vport is not installed - * in the kernel (e.g. it hasn't been added to a dpif yet with - * dpif_port_add()). */ - ofpbuf_delete(dev->options); - dev->options = options; - options = NULL; - error = 0; - } - } - ofpbuf_delete(options); - - return error; -} - -static int -netdev_vport_send(struct netdev *netdev, const void *data, size_t size) -{ - struct netdev_dev *dev_ = netdev_get_dev(netdev); - struct netdev_dev_vport *dev = netdev_dev_vport_cast(dev_); - - if (dev->dp_ifindex == -1) { - const char *name = netdev_get_name(netdev); - struct dpif_linux_vport reply; - struct ofpbuf *buf; - int error; - - error = dpif_linux_vport_get(name, &reply, &buf); - if (error) { - VLOG_ERR_RL(&rl, "%s: failed to query vport for send (%s)", - name, strerror(error)); - return error; - } - dev->dp_ifindex = reply.dp_ifindex; - dev->port_no = reply.port_no; - ofpbuf_delete(buf); - } - - return dpif_linux_vport_send(dev->dp_ifindex, dev->port_no, data, size); -} - -static int -netdev_vport_set_etheraddr(struct netdev *netdev, +netdev_vport_set_etheraddr(struct netdev *netdev_, const uint8_t mac[ETH_ADDR_LEN]) { - struct dpif_linux_vport vport; - int error; + struct netdev_vport *netdev = netdev_vport_cast(netdev_); - dpif_linux_vport_init(&vport); - vport.cmd = OVS_VPORT_CMD_SET; - vport.name = netdev_get_name(netdev); - vport.address = mac; + ovs_mutex_lock(&netdev->mutex); + memcpy(netdev->etheraddr, mac, ETH_ADDR_LEN); + ovs_mutex_unlock(&netdev->mutex); + netdev_change_seq_changed(netdev_); - error = dpif_linux_vport_transact(&vport, NULL, NULL); - if (!error) { - netdev_vport_poll_notify(netdev); - } - return error; + return 0; } static int -netdev_vport_get_etheraddr(const struct netdev *netdev, +netdev_vport_get_etheraddr(const struct netdev *netdev_, uint8_t mac[ETH_ADDR_LEN]) { - struct dpif_linux_vport reply; - struct ofpbuf *buf; - int error; - - error = dpif_linux_vport_get(netdev_get_name(netdev), &reply, &buf); - if (!error) { - if (reply.address) { - memcpy(mac, reply.address, ETH_ADDR_LEN); - } else { - error = EOPNOTSUPP; - } - ofpbuf_delete(buf); - } - return error; -} - -int -netdev_vport_get_stats(const struct netdev *netdev, struct netdev_stats *stats) -{ - struct dpif_linux_vport reply; - struct ofpbuf *buf; - int error; - - error = dpif_linux_vport_get(netdev_get_name(netdev), &reply, &buf); - if (error) { - return error; - } else if (!reply.stats) { - ofpbuf_delete(buf); - return EOPNOTSUPP; - } - - netdev_stats_from_rtnl_link_stats64(stats, reply.stats); + struct netdev_vport *netdev = netdev_vport_cast(netdev_); - ofpbuf_delete(buf); + ovs_mutex_lock(&netdev->mutex); + memcpy(mac, netdev->etheraddr, ETH_ADDR_LEN); + ovs_mutex_unlock(&netdev->mutex); return 0; } -int -netdev_vport_set_stats(struct netdev *netdev, const struct netdev_stats *stats) +/* Checks if the tunnel status has changed and returns a boolean. + * Updates the tunnel status if it has changed. */ +static bool +tunnel_check_status_change__(struct netdev_vport *netdev) + OVS_REQUIRES(netdev->mutex) { - struct rtnl_link_stats64 rtnl_stats; - struct dpif_linux_vport vport; - int err; + char iface[IFNAMSIZ]; + bool status = false; + ovs_be32 route; - netdev_stats_to_rtnl_link_stats64(&rtnl_stats, stats); + iface[0] = '\0'; + route = netdev->tnl_cfg.ip_dst; + if (route_table_get_name(route, iface)) { + struct netdev *egress_netdev; - dpif_linux_vport_init(&vport); - vport.cmd = OVS_VPORT_CMD_SET; - vport.name = netdev_get_name(netdev); - vport.stats = &rtnl_stats; + if (!netdev_open(iface, "system", &egress_netdev)) { + status = netdev_get_carrier(egress_netdev); + netdev_close(egress_netdev); + } + } - err = dpif_linux_vport_transact(&vport, NULL, NULL); + if (strcmp(netdev->egress_iface, iface) + || netdev->carrier_status != status) { + ovs_strlcpy(netdev->egress_iface, iface, IFNAMSIZ); + netdev->carrier_status = status; - /* If the vport layer doesn't know about the device, that doesn't mean it - * doesn't exist (after all were able to open it when netdev_open() was - * called), it just means that it isn't attached and we'll be getting - * stats a different way. */ - if (err == ENODEV) { - err = EOPNOTSUPP; + return true; } - return err; + return false; } static int -netdev_vport_get_status(const struct netdev *netdev, struct shash *sh) +tunnel_get_status(const struct netdev *netdev_, struct smap *smap) { - const char *iface = netdev_vport_get_tnl_iface(netdev); - - if (iface) { - struct netdev *egress_netdev; + struct netdev_vport *netdev = netdev_vport_cast(netdev_); - shash_add(sh, "tunnel_egress_iface", xstrdup(iface)); + if (netdev->egress_iface[0]) { + smap_add(smap, "tunnel_egress_iface", netdev->egress_iface); - if (!netdev_open(iface, "system", &egress_netdev)) { - shash_add(sh, "tunnel_egress_iface_carrier", - xstrdup(netdev_get_carrier(egress_netdev) - ? "up" : "down")); - netdev_close(egress_netdev); - } + smap_add(smap, "tunnel_egress_iface_carrier", + netdev->carrier_status ? "up" : "down"); } return 0; @@ -433,8 +318,9 @@ netdev_vport_get_status(const struct netdev *netdev, struct shash *sh) static int netdev_vport_update_flags(struct netdev *netdev OVS_UNUSED, - enum netdev_flags off, enum netdev_flags on OVS_UNUSED, - enum netdev_flags *old_flagsp) + enum netdev_flags off, + enum netdev_flags on OVS_UNUSED, + enum netdev_flags *old_flagsp) { if (off & (NETDEV_UP | NETDEV_PROMISC)) { return EOPNOTSUPP; @@ -444,156 +330,134 @@ netdev_vport_update_flags(struct netdev *netdev OVS_UNUSED, return 0; } -static unsigned int -netdev_vport_change_seq(const struct netdev *netdev) -{ - return netdev_dev_vport_cast(netdev_get_dev(netdev))->change_seq; -} - static void netdev_vport_run(void) { - route_table_run(); -} + uint64_t seq; -static void -netdev_vport_wait(void) -{ - route_table_wait(); -} - -/* get_tnl_iface() implementation. */ -static const char * -netdev_vport_get_tnl_iface(const struct netdev *netdev) -{ - struct nlattr *a[OVS_TUNNEL_ATTR_MAX + 1]; - ovs_be32 route; - struct netdev_dev_vport *ndv; - static char name[IFNAMSIZ]; - - ndv = netdev_dev_vport_cast(netdev_get_dev(netdev)); - if (tnl_port_config_from_nlattr(ndv->options->data, ndv->options->size, - a)) { - return NULL; - } - route = nl_attr_get_be32(a[OVS_TUNNEL_ATTR_DST_IPV4]); - - if (route_table_get_name(route, name)) { - return name; + route_table_run(); + seq = route_table_get_change_seq(); + if (rt_change_seqno != seq) { + rt_change_seqno = seq; + netdev_vport_route_changed(); } - - return NULL; } - -/* Helper functions. */ static void -netdev_vport_poll_notify(const struct netdev *netdev) +netdev_vport_wait(void) { - struct netdev_dev_vport *ndv; - - ndv = netdev_dev_vport_cast(netdev_get_dev(netdev)); + uint64_t seq; - ndv->change_seq++; - if (!ndv->change_seq) { - ndv->change_seq++; + route_table_wait(); + seq = route_table_get_change_seq(); + if (rt_change_seqno != seq) { + poll_immediate_wake(); } } -/* Code specific to individual vport types. */ +/* Code specific to tunnel types. */ -static void -set_key(const struct shash *args, const char *name, uint16_t type, - struct ofpbuf *options) +static ovs_be64 +parse_key(const struct smap *args, const char *name, + bool *present, bool *flow) { const char *s; - s = shash_find_data(args, name); + *present = false; + *flow = false; + + s = smap_get(args, name); if (!s) { - s = shash_find_data(args, "key"); + s = smap_get(args, "key"); if (!s) { - s = "0"; + return 0; } } + *present = true; + if (!strcmp(s, "flow")) { - /* This is the default if no attribute is present. */ + *flow = true; + return 0; } else { - nl_msg_put_be64(options, type, htonll(strtoull(s, NULL, 0))); + return htonll(strtoull(s, NULL, 0)); } } static int -parse_tunnel_config(const char *name, const char *type, - const struct shash *args, struct ofpbuf *options) -{ - bool is_gre = false; - bool is_ipsec = false; - struct shash_node *node; - bool ipsec_mech_set = false; - ovs_be32 daddr = htonl(0); - uint32_t flags; - - flags = TNL_F_DF_DEFAULT | TNL_F_PMTUD | TNL_F_HDR_CACHE; - if (!strcmp(type, "gre")) { - is_gre = true; - } else if (!strcmp(type, "ipsec_gre")) { - is_gre = true; - is_ipsec = true; - flags |= TNL_F_IPSEC; - flags &= ~TNL_F_HDR_CACHE; - } - - SHASH_FOR_EACH (node, args) { - if (!strcmp(node->name, "remote_ip")) { +set_tunnel_config(struct netdev *dev_, const struct smap *args) +{ + struct netdev_vport *dev = netdev_vport_cast(dev_); + const char *name = netdev_get_name(dev_); + const char *type = netdev_get_type(dev_); + bool ipsec_mech_set, needs_dst_port, has_csum; + struct netdev_tunnel_config tnl_cfg; + struct smap_node *node; + + has_csum = strstr(type, "gre"); + ipsec_mech_set = false; + memset(&tnl_cfg, 0, sizeof tnl_cfg); + + needs_dst_port = netdev_vport_needs_dst_port(dev_); + tnl_cfg.ipsec = strstr(type, "ipsec"); + tnl_cfg.dont_fragment = true; + + SMAP_FOR_EACH (node, args) { + if (!strcmp(node->key, "remote_ip")) { struct in_addr in_addr; - if (lookup_ip(node->data, &in_addr)) { + if (!strcmp(node->value, "flow")) { + tnl_cfg.ip_dst_flow = true; + tnl_cfg.ip_dst = htonl(0); + } else if (lookup_ip(node->value, &in_addr)) { VLOG_WARN("%s: bad %s 'remote_ip'", name, type); + } else if (ip_is_multicast(in_addr.s_addr)) { + VLOG_WARN("%s: multicast remote_ip="IP_FMT" not allowed", + name, IP_ARGS(in_addr.s_addr)); + return EINVAL; } else { - daddr = in_addr.s_addr; + tnl_cfg.ip_dst = in_addr.s_addr; } - } else if (!strcmp(node->name, "local_ip")) { + } else if (!strcmp(node->key, "local_ip")) { struct in_addr in_addr; - if (lookup_ip(node->data, &in_addr)) { + if (!strcmp(node->value, "flow")) { + tnl_cfg.ip_src_flow = true; + tnl_cfg.ip_src = htonl(0); + } else if (lookup_ip(node->value, &in_addr)) { VLOG_WARN("%s: bad %s 'local_ip'", name, type); } else { - nl_msg_put_be32(options, OVS_TUNNEL_ATTR_SRC_IPV4, - in_addr.s_addr); + tnl_cfg.ip_src = in_addr.s_addr; } - } else if (!strcmp(node->name, "tos")) { - if (!strcmp(node->data, "inherit")) { - flags |= TNL_F_TOS_INHERIT; + } else if (!strcmp(node->key, "tos")) { + if (!strcmp(node->value, "inherit")) { + tnl_cfg.tos_inherit = true; } else { - nl_msg_put_u8(options, OVS_TUNNEL_ATTR_TOS, atoi(node->data)); + char *endptr; + int tos; + tos = strtol(node->value, &endptr, 0); + if (*endptr == '\0' && tos == (tos & IP_DSCP_MASK)) { + tnl_cfg.tos = tos; + } else { + VLOG_WARN("%s: invalid TOS %s", name, node->value); + } } - } else if (!strcmp(node->name, "ttl")) { - if (!strcmp(node->data, "inherit")) { - flags |= TNL_F_TTL_INHERIT; + } else if (!strcmp(node->key, "ttl")) { + if (!strcmp(node->value, "inherit")) { + tnl_cfg.ttl_inherit = true; } else { - nl_msg_put_u8(options, OVS_TUNNEL_ATTR_TTL, atoi(node->data)); - } - } else if (!strcmp(node->name, "csum") && is_gre) { - if (!strcmp(node->data, "true")) { - flags |= TNL_F_CSUM; - } - } else if (!strcmp(node->name, "df_inherit")) { - if (!strcmp(node->data, "true")) { - flags |= TNL_F_DF_INHERIT; + tnl_cfg.ttl = atoi(node->value); } - } else if (!strcmp(node->name, "df_default")) { - if (!strcmp(node->data, "false")) { - flags &= ~TNL_F_DF_DEFAULT; + } else if (!strcmp(node->key, "dst_port") && needs_dst_port) { + tnl_cfg.dst_port = htons(atoi(node->value)); + } else if (!strcmp(node->key, "csum") && has_csum) { + if (!strcmp(node->value, "true")) { + tnl_cfg.csum = true; } - } else if (!strcmp(node->name, "pmtud")) { - if (!strcmp(node->data, "false")) { - flags &= ~TNL_F_PMTUD; + } else if (!strcmp(node->key, "df_default")) { + if (!strcmp(node->value, "false")) { + tnl_cfg.dont_fragment = false; } - } else if (!strcmp(node->name, "header_cache")) { - if (!strcmp(node->data, "false")) { - flags &= ~TNL_F_HDR_CACHE; - } - } else if (!strcmp(node->name, "peer_cert") && is_ipsec) { - if (shash_find(args, "certificate")) { + } else if (!strcmp(node->key, "peer_cert") && tnl_cfg.ipsec) { + if (smap_get(args, "certificate")) { ipsec_mech_set = true; } else { const char *use_ssl_cert; @@ -604,7 +468,7 @@ parse_tunnel_config(const char *name, const char *type, * will like be removed when multiple SSL configurations * are supported by OVS. */ - use_ssl_cert = shash_find_data(args, "use_ssl_cert"); + use_ssl_cert = smap_get(args, "use_ssl_cert"); if (!use_ssl_cert || strcmp(use_ssl_cert, "true")) { VLOG_ERR("%s: 'peer_cert' requires 'certificate' argument", name); @@ -612,34 +476,54 @@ parse_tunnel_config(const char *name, const char *type, } ipsec_mech_set = true; } - } else if (!strcmp(node->name, "psk") && is_ipsec) { + } else if (!strcmp(node->key, "psk") && tnl_cfg.ipsec) { ipsec_mech_set = true; - } else if (is_ipsec - && (!strcmp(node->name, "certificate") - || !strcmp(node->name, "private_key") - || !strcmp(node->name, "use_ssl_cert"))) { + } else if (tnl_cfg.ipsec + && (!strcmp(node->key, "certificate") + || !strcmp(node->key, "private_key") + || !strcmp(node->key, "use_ssl_cert"))) { /* Ignore options not used by the netdev. */ - } else if (!strcmp(node->name, "key") || - !strcmp(node->name, "in_key") || - !strcmp(node->name, "out_key")) { + } else if (!strcmp(node->key, "key") || + !strcmp(node->key, "in_key") || + !strcmp(node->key, "out_key")) { /* Handled separately below. */ } else { - VLOG_WARN("%s: unknown %s argument '%s'", name, type, node->name); + VLOG_WARN("%s: unknown %s argument '%s'", name, type, node->key); } } - if (is_ipsec) { - char *file_name = xasprintf("%s/%s", ovs_rundir(), - "ovs-monitor-ipsec.pid"); - pid_t pid = read_pidfile(file_name); - free(file_name); + /* Add a default destination port for VXLAN if none specified. */ + if (!strcmp(type, "vxlan") && !tnl_cfg.dst_port) { + tnl_cfg.dst_port = htons(VXLAN_DST_PORT); + } + + /* Add a default destination port for LISP if none specified. */ + 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; + +#ifndef _WIN32 + ovs_mutex_lock(&mutex); + if (pid <= 0) { + char *file_name = xasprintf("%s/%s", ovs_rundir(), + "ovs-monitor-ipsec.pid"); + pid = read_pidfile(file_name); + free(file_name); + } + ovs_mutex_unlock(&mutex); +#endif + if (pid < 0) { VLOG_ERR("%s: IPsec requires the ovs-monitor-ipsec daemon", name); return EINVAL; } - if (shash_find(args, "peer_cert") && shash_find(args, "psk")) { + if (smap_get(args, "peer_cert") && smap_get(args, "psk")) { VLOG_ERR("%s: cannot define both 'peer_cert' and 'psk'", name); return EINVAL; } @@ -651,209 +535,238 @@ parse_tunnel_config(const char *name, const char *type, } } - set_key(args, "in_key", OVS_TUNNEL_ATTR_IN_KEY, options); - set_key(args, "out_key", OVS_TUNNEL_ATTR_OUT_KEY, options); - - if (!daddr) { + if (!tnl_cfg.ip_dst && !tnl_cfg.ip_dst_flow) { VLOG_ERR("%s: %s type requires valid 'remote_ip' argument", name, type); return EINVAL; } - nl_msg_put_be32(options, OVS_TUNNEL_ATTR_DST_IPV4, daddr); + if (tnl_cfg.ip_src_flow && !tnl_cfg.ip_dst_flow) { + VLOG_ERR("%s: %s type requires 'remote_ip=flow' with 'local_ip=flow'", + name, type); + return EINVAL; + } + if (!tnl_cfg.ttl) { + tnl_cfg.ttl = DEFAULT_TTL; + } - nl_msg_put_u32(options, OVS_TUNNEL_ATTR_FLAGS, flags); + tnl_cfg.in_key = parse_key(args, "in_key", + &tnl_cfg.in_key_present, + &tnl_cfg.in_key_flow); - return 0; -} + tnl_cfg.out_key = parse_key(args, "out_key", + &tnl_cfg.out_key_present, + &tnl_cfg.out_key_flow); -static int -tnl_port_config_from_nlattr(const struct nlattr *options, size_t options_len, - struct nlattr *a[OVS_TUNNEL_ATTR_MAX + 1]) -{ - static const struct nl_policy ovs_tunnel_policy[] = { - [OVS_TUNNEL_ATTR_FLAGS] = { .type = NL_A_U32 }, - [OVS_TUNNEL_ATTR_DST_IPV4] = { .type = NL_A_BE32 }, - [OVS_TUNNEL_ATTR_SRC_IPV4] = { .type = NL_A_BE32, .optional = true }, - [OVS_TUNNEL_ATTR_IN_KEY] = { .type = NL_A_BE64, .optional = true }, - [OVS_TUNNEL_ATTR_OUT_KEY] = { .type = NL_A_BE64, .optional = true }, - [OVS_TUNNEL_ATTR_TOS] = { .type = NL_A_U8, .optional = true }, - [OVS_TUNNEL_ATTR_TTL] = { .type = NL_A_U8, .optional = true }, - }; - struct ofpbuf buf; + ovs_mutex_lock(&dev->mutex); + dev->tnl_cfg = tnl_cfg; + tunnel_check_status_change__(dev); + netdev_change_seq_changed(dev_); + ovs_mutex_unlock(&dev->mutex); - ofpbuf_use_const(&buf, options, options_len); - if (!nl_policy_parse(&buf, 0, ovs_tunnel_policy, - a, ARRAY_SIZE(ovs_tunnel_policy))) { - return EINVAL; - } return 0; } -static uint64_t -get_be64_or_zero(const struct nlattr *a) -{ - return a ? ntohll(nl_attr_get_be64(a)) : 0; -} - static int -unparse_tunnel_config(const char *name OVS_UNUSED, const char *type OVS_UNUSED, - const struct nlattr *options, size_t options_len, - struct shash *args) +get_tunnel_config(const struct netdev *dev, struct smap *args) { - struct nlattr *a[OVS_TUNNEL_ATTR_MAX + 1]; - ovs_be32 daddr; - uint32_t flags; - int error; + struct netdev_vport *netdev = netdev_vport_cast(dev); + struct netdev_tunnel_config tnl_cfg; - error = tnl_port_config_from_nlattr(options, options_len, a); - if (error) { - return error; - } + ovs_mutex_lock(&netdev->mutex); + tnl_cfg = netdev->tnl_cfg; + ovs_mutex_unlock(&netdev->mutex); - flags = nl_attr_get_u32(a[OVS_TUNNEL_ATTR_FLAGS]); - if (!(flags & TNL_F_HDR_CACHE) == !(flags & TNL_F_IPSEC)) { - smap_add(args, "header_cache", - flags & TNL_F_HDR_CACHE ? "true" : "false"); + if (tnl_cfg.ip_dst) { + smap_add_format(args, "remote_ip", IP_FMT, IP_ARGS(tnl_cfg.ip_dst)); + } else if (tnl_cfg.ip_dst_flow) { + smap_add(args, "remote_ip", "flow"); } - daddr = nl_attr_get_be32(a[OVS_TUNNEL_ATTR_DST_IPV4]); - shash_add(args, "remote_ip", xasprintf(IP_FMT, IP_ARGS(&daddr))); - - if (a[OVS_TUNNEL_ATTR_SRC_IPV4]) { - ovs_be32 saddr = nl_attr_get_be32(a[OVS_TUNNEL_ATTR_SRC_IPV4]); - shash_add(args, "local_ip", xasprintf(IP_FMT, IP_ARGS(&saddr))); + if (tnl_cfg.ip_src) { + smap_add_format(args, "local_ip", IP_FMT, IP_ARGS(tnl_cfg.ip_src)); + } else if (tnl_cfg.ip_src_flow) { + smap_add(args, "local_ip", "flow"); } - if (!a[OVS_TUNNEL_ATTR_IN_KEY] && !a[OVS_TUNNEL_ATTR_OUT_KEY]) { + if (tnl_cfg.in_key_flow && tnl_cfg.out_key_flow) { smap_add(args, "key", "flow"); + } else if (tnl_cfg.in_key_present && tnl_cfg.out_key_present + && tnl_cfg.in_key == tnl_cfg.out_key) { + smap_add_format(args, "key", "%"PRIu64, ntohll(tnl_cfg.in_key)); } else { - uint64_t in_key = get_be64_or_zero(a[OVS_TUNNEL_ATTR_IN_KEY]); - uint64_t out_key = get_be64_or_zero(a[OVS_TUNNEL_ATTR_OUT_KEY]); - - if (in_key && in_key == out_key) { - shash_add(args, "key", xasprintf("%"PRIu64, in_key)); - } else { - if (!a[OVS_TUNNEL_ATTR_IN_KEY]) { - smap_add(args, "in_key", "flow"); - } else if (in_key) { - shash_add(args, "in_key", xasprintf("%"PRIu64, in_key)); - } + if (tnl_cfg.in_key_flow) { + smap_add(args, "in_key", "flow"); + } else if (tnl_cfg.in_key_present) { + smap_add_format(args, "in_key", "%"PRIu64, + ntohll(tnl_cfg.in_key)); + } - if (!a[OVS_TUNNEL_ATTR_OUT_KEY]) { - smap_add(args, "out_key", "flow"); - } else if (out_key) { - shash_add(args, "out_key", xasprintf("%"PRIu64, out_key)); - } + if (tnl_cfg.out_key_flow) { + smap_add(args, "out_key", "flow"); + } else if (tnl_cfg.out_key_present) { + smap_add_format(args, "out_key", "%"PRIu64, + ntohll(tnl_cfg.out_key)); } } - if (flags & TNL_F_TTL_INHERIT) { - smap_add(args, "tos", "inherit"); - } else if (a[OVS_TUNNEL_ATTR_TTL]) { - int ttl = nl_attr_get_u8(a[OVS_TUNNEL_ATTR_TTL]); - shash_add(args, "tos", xasprintf("%d", ttl)); + if (tnl_cfg.ttl_inherit) { + smap_add(args, "ttl", "inherit"); + } else if (tnl_cfg.ttl != DEFAULT_TTL) { + smap_add_format(args, "ttl", "%"PRIu8, tnl_cfg.ttl); } - if (flags & TNL_F_TOS_INHERIT) { + if (tnl_cfg.tos_inherit) { smap_add(args, "tos", "inherit"); - } else if (a[OVS_TUNNEL_ATTR_TOS]) { - int tos = nl_attr_get_u8(a[OVS_TUNNEL_ATTR_TOS]); - shash_add(args, "tos", xasprintf("%d", tos)); + } else if (tnl_cfg.tos) { + smap_add_format(args, "tos", "0x%x", tnl_cfg.tos); } - if (flags & TNL_F_CSUM) { - smap_add(args, "csum", "true"); + if (tnl_cfg.dst_port) { + uint16_t dst_port = ntohs(tnl_cfg.dst_port); + const char *type = netdev_get_type(dev); + + if ((!strcmp("vxlan", type) && dst_port != VXLAN_DST_PORT) || + (!strcmp("lisp", type) && dst_port != LISP_DST_PORT)) { + smap_add_format(args, "dst_port", "%d", dst_port); + } } - if (flags & TNL_F_DF_INHERIT) { - smap_add(args, "df_inherit", "true"); + + if (tnl_cfg.csum) { + smap_add(args, "csum", "true"); } - if (!(flags & TNL_F_DF_DEFAULT)) { + + if (!tnl_cfg.dont_fragment) { smap_add(args, "df_default", "false"); } - if (!(flags & TNL_F_PMTUD)) { - smap_add(args, "pmtud", "false"); + + return 0; +} + +/* Code specific to patch ports. */ + +/* If 'netdev' is a patch port, returns the name of its peer as a malloc()'d + * string that the caller must free. + * + * If 'netdev' is not a patch port, returns NULL. */ +char * +netdev_vport_patch_peer(const struct netdev *netdev_) +{ + char *peer = NULL; + + if (netdev_vport_is_patch(netdev_)) { + struct netdev_vport *netdev = netdev_vport_cast(netdev_); + + ovs_mutex_lock(&netdev->mutex); + if (netdev->peer) { + peer = xstrdup(netdev->peer); + } + ovs_mutex_unlock(&netdev->mutex); + } + + return peer; +} + +void +netdev_vport_inc_rx(const struct netdev *netdev, + const struct dpif_flow_stats *stats) +{ + if (is_vport_class(netdev_get_class(netdev))) { + struct netdev_vport *dev = netdev_vport_cast(netdev); + + ovs_mutex_lock(&dev->mutex); + dev->stats.rx_packets += stats->n_packets; + dev->stats.rx_bytes += stats->n_bytes; + ovs_mutex_unlock(&dev->mutex); } +} + +void +netdev_vport_inc_tx(const struct netdev *netdev, + const struct dpif_flow_stats *stats) +{ + if (is_vport_class(netdev_get_class(netdev))) { + struct netdev_vport *dev = netdev_vport_cast(netdev); + + ovs_mutex_lock(&dev->mutex); + dev->stats.tx_packets += stats->n_packets; + dev->stats.tx_bytes += stats->n_bytes; + ovs_mutex_unlock(&dev->mutex); + } +} + +static int +get_patch_config(const struct netdev *dev_, struct smap *args) +{ + struct netdev_vport *dev = netdev_vport_cast(dev_); + + ovs_mutex_lock(&dev->mutex); + if (dev->peer) { + smap_add(args, "peer", dev->peer); + } + ovs_mutex_unlock(&dev->mutex); return 0; } static int -parse_patch_config(const char *name, const char *type OVS_UNUSED, - const struct shash *args, struct ofpbuf *options) +set_patch_config(struct netdev *dev_, const struct smap *args) { + struct netdev_vport *dev = netdev_vport_cast(dev_); + const char *name = netdev_get_name(dev_); const char *peer; - peer = shash_find_data(args, "peer"); + peer = smap_get(args, "peer"); if (!peer) { VLOG_ERR("%s: patch type requires valid 'peer' argument", name); return EINVAL; } - if (shash_count(args) > 1) { + if (smap_count(args) > 1) { VLOG_ERR("%s: patch type takes only a 'peer' argument", name); return EINVAL; } - if (strlen(peer) >= IFNAMSIZ) { - VLOG_ERR("%s: patch 'peer' arg too long", name); - return EINVAL; - } - if (!strcmp(name, peer)) { VLOG_ERR("%s: patch peer must not be self", name); return EINVAL; } - nl_msg_put_string(options, OVS_PATCH_ATTR_PEER, peer); + ovs_mutex_lock(&dev->mutex); + free(dev->peer); + dev->peer = xstrdup(peer); + netdev_change_seq_changed(dev_); + ovs_mutex_unlock(&dev->mutex); return 0; } static int -unparse_patch_config(const char *name OVS_UNUSED, const char *type OVS_UNUSED, - const struct nlattr *options, size_t options_len, - struct shash *args) -{ - static const struct nl_policy ovs_patch_policy[] = { - [OVS_PATCH_ATTR_PEER] = { .type = NL_A_STRING, - .max_len = IFNAMSIZ, - .optional = false } - }; +get_stats(const struct netdev *netdev, struct netdev_stats *stats) +{ + struct netdev_vport *dev = netdev_vport_cast(netdev); - struct nlattr *a[ARRAY_SIZE(ovs_patch_policy)]; - struct ofpbuf buf; + ovs_mutex_lock(&dev->mutex); + *stats = dev->stats; + ovs_mutex_unlock(&dev->mutex); - ofpbuf_use_const(&buf, options, options_len); - if (!nl_policy_parse(&buf, 0, ovs_patch_policy, - a, ARRAY_SIZE(ovs_patch_policy))) { - return EINVAL; - } - - smap_add(args, "peer", nl_attr_get_string(a[OVS_PATCH_ATTR_PEER])); return 0; } -#define VPORT_FUNCTIONS(GET_STATUS) \ +#define VPORT_FUNCTIONS(GET_CONFIG, SET_CONFIG, \ + GET_TUNNEL_CONFIG, GET_STATUS) \ NULL, \ netdev_vport_run, \ netdev_vport_wait, \ \ - netdev_vport_create, \ - netdev_vport_destroy, \ - netdev_vport_get_config, \ - netdev_vport_set_config, \ - \ - netdev_vport_open, \ - netdev_vport_close, \ + netdev_vport_alloc, \ + netdev_vport_construct, \ + netdev_vport_destruct, \ + netdev_vport_dealloc, \ + GET_CONFIG, \ + SET_CONFIG, \ + GET_TUNNEL_CONFIG, \ \ - NULL, /* enumerate */ \ - \ - NULL, /* listen */ \ - NULL, /* recv */ \ - NULL, /* recv_wait */ \ - NULL, /* drain */ \ - \ - netdev_vport_send, /* send */ \ + NULL, /* send */ \ NULL, /* send_wait */ \ \ netdev_vport_set_etheraddr, \ @@ -862,13 +775,13 @@ unparse_patch_config(const char *name OVS_UNUSED, const char *type OVS_UNUSED, NULL, /* set_mtu */ \ NULL, /* get_ifindex */ \ NULL, /* get_carrier */ \ + NULL, /* get_carrier_resets */ \ NULL, /* get_miimon */ \ - netdev_vport_get_stats, \ - netdev_vport_set_stats, \ + get_stats, \ + NULL, /* set_stats */ \ \ NULL, /* get_features */ \ NULL, /* set_advertisements */ \ - NULL, /* get_vlan_vid */ \ \ NULL, /* set_policing */ \ NULL, /* get_qos_types */ \ @@ -879,7 +792,9 @@ unparse_patch_config(const char *name OVS_UNUSED, const char *type OVS_UNUSED, NULL, /* set_queue */ \ NULL, /* delete_queue */ \ NULL, /* get_queue_stats */ \ - NULL, /* dump_queues */ \ + NULL, /* queue_dump_start */ \ + NULL, /* queue_dump_next */ \ + NULL, /* queue_dump_done */ \ NULL, /* dump_queue_stats */ \ \ NULL, /* get_in4 */ \ @@ -892,32 +807,52 @@ unparse_patch_config(const char *name OVS_UNUSED, const char *type OVS_UNUSED, \ netdev_vport_update_flags, \ \ - netdev_vport_change_seq + NULL, /* rx_alloc */ \ + NULL, /* rx_construct */ \ + NULL, /* rx_destruct */ \ + NULL, /* rx_dealloc */ \ + NULL, /* rx_recv */ \ + 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) }} void -netdev_vport_register(void) +netdev_vport_tunnel_register(void) { static const struct vport_class vport_classes[] = { - { OVS_VPORT_TYPE_GRE, - { "gre", VPORT_FUNCTIONS(netdev_vport_get_status) }, - parse_tunnel_config, unparse_tunnel_config }, - - { OVS_VPORT_TYPE_GRE, - { "ipsec_gre", VPORT_FUNCTIONS(netdev_vport_get_status) }, - parse_tunnel_config, unparse_tunnel_config }, - - { OVS_VPORT_TYPE_CAPWAP, - { "capwap", VPORT_FUNCTIONS(netdev_vport_get_status) }, - parse_tunnel_config, unparse_tunnel_config }, - - { OVS_VPORT_TYPE_PATCH, - { "patch", VPORT_FUNCTIONS(NULL) }, - parse_patch_config, unparse_patch_config } + TUNNEL_CLASS("gre", "gre_system"), + TUNNEL_CLASS("ipsec_gre", "gre_system"), + TUNNEL_CLASS("gre64", "gre64_system"), + TUNNEL_CLASS("ipsec_gre64", "gre64_system"), + TUNNEL_CLASS("vxlan", "vxlan_system"), + TUNNEL_CLASS("lisp", "lisp_system") }; + static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; - int i; + if (ovsthread_once_start(&once)) { + int i; - for (i = 0; i < ARRAY_SIZE(vport_classes); i++) { - netdev_register_provider(&vport_classes[i].netdev_class); + for (i = 0; i < ARRAY_SIZE(vport_classes); i++) { + netdev_register_provider(&vport_classes[i].netdev_class); + } + ovsthread_once_done(&once); } } + +void +netdev_vport_patch_register(void) +{ + static const struct vport_class patch_class = + { NULL, + { "patch", VPORT_FUNCTIONS(get_patch_config, + set_patch_config, + NULL, + NULL) }}; + netdev_register_provider(&patch_class.netdev_class); +}