/* * Copyright (c) 2020 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #define _GNU_SOURCE #include <sched.h> #include <fcntl.h> #include <ctype.h> #include <sys/socket.h> #include <net/if.h> #include <linux-cp/lcp_interface.h> #include <netlink/route/link/vlan.h> #include <vnet/plugin/plugin.h> #include <vnet/plugin/plugin.h> #include <vnet/ip/ip_punt_drop.h> #include <vnet/fib/fib_table.h> #include <vnet/adj/adj_mcast.h> #include <vnet/udp/udp.h> #include <vnet/tcp/tcp.h> #include <vnet/devices/tap/tap.h> #include <vnet/devices/virtio/virtio.h> #include <vnet/devices/netlink.h> #include <vlibapi/api_helper_macros.h> #include <vnet/ipsec/ipsec_punt.h> static vlib_log_class_t lcp_itf_pair_logger; /** * Pool of LIP objects */ lcp_itf_pair_t *lcp_itf_pair_pool; u32 lcp_itf_num_pairs (void) { return pool_elts (lcp_itf_pair_pool); } /** * DBs of interface-pair objects: * - key'd by VIF (linux ID) * - key'd by VPP's physical interface * - number of shared uses of VPP's tap/host interface */ static uword *lip_db_by_vif; index_t *lip_db_by_phy; u32 *lip_db_by_host; #define LCP_ITF_PAIR_DBG(...) \ vlib_log_notice (lcp_itf_pair_logger, __VA_ARGS__); #define LCP_ITF_PAIR_INFO(...) \ vlib_log_notice (lcp_itf_pair_logger, __VA_ARGS__); u8 * format_lcp_itf_pair (u8 *s, va_list *args) { vnet_main_t *vnm = vnet_get_main (); lcp_itf_pair_t *lip = va_arg (*args, lcp_itf_pair_t *); vnet_sw_interface_t *swif_phy; vnet_sw_interface_t *swif_host; s = format (s, "itf-pair: [%d]", lip - lcp_itf_pair_pool); swif_phy = vnet_get_sw_interface_or_null (vnm, lip->lip_phy_sw_if_index); if (!swif_phy) s = format (s, " <no-phy-if>"); else s = format (s, " %U", format_vnet_sw_interface_name, vnm, swif_phy); swif_host = vnet_get_sw_interface_or_null (vnm, lip->lip_host_sw_if_index); if (!swif_host) s = format (s, " <no-host-if>"); else s = format (s, " %U", format_vnet_sw_interface_name, vnm, swif_host); s = format (s, " %v %d type %s", lip->lip_host_name, lip->lip_vif_index, (lip->lip_host_type == LCP_ITF_HOST_TAP) ? "tap" : "tun"); if (lip->lip_namespace) s = format (s, " netns %s", lip->lip_namespace); return s; } static walk_rc_t lcp_itf_pair_walk_show_cb (index_t api, void *ctx) { vlib_main_t *vm; lcp_itf_pair_t *lip; lip = lcp_itf_pair_get (api); if (!lip) return WALK_STOP; vm = vlib_get_main (); vlib_cli_output (vm, "%U\n", format_lcp_itf_pair, lip); return WALK_CONTINUE; } void lcp_itf_pair_show (u32 phy_sw_if_index) { vlib_main_t *vm; u8 *ns; index_t api; vm = vlib_get_main (); ns = lcp_get_default_ns (); vlib_cli_output (vm, "lcp default netns '%s'\n", ns ? (char *) ns : "<unset>"); if (phy_sw_if_index == ~0) { lcp_itf_pair_walk (lcp_itf_pair_walk_show_cb, 0); } else { api = lcp_itf_pair_find_by_phy (phy_sw_if_index); if (api != INDEX_INVALID) lcp_itf_pair_walk_show_cb (api, 0); } } lcp_itf_pair_t * lcp_itf_pair_get (u32 index) { return pool_elt_at_index (lcp_itf_pair_pool, index); } index_t lcp_itf_pair_find_by_vif (u32 vif_index) { uword *p; p = hash_get (lip_db_by_vif, vif_index); if (p) return p[0]; return INDEX_INVALID; } int lcp_itf_pair_add_sub (u32 vif, u8 *host_if_name, u32 sub_sw_if_index, u32 phy_sw_if_index, u8 *ns) { lcp_itf_pair_t *lip; lip = lcp_itf_pair_get (lcp_itf_pair_find_by_phy (phy_sw_if_index)); return lcp_itf_pair_add (lip->lip_host_sw_if_index, sub_sw_if_index, host_if_name, vif, lip->lip_host_type, ns); } const char *lcp_itf_l3_feat_names[N_LCP_ITF_HOST][N_AF] = { [LCP_ITF_HOST_TAP] = { [AF_IP4] = "linux-cp-xc-ip4", [AF_IP6] = "linux-cp-xc-ip6", }, [LCP_ITF_HOST_TUN] = { [AF_IP4] = "linux-cp-xc-l3-ip4", [AF_IP6] = "linux-cp-xc-l3-ip6", }, }; const fib_route_path_flags_t lcp_itf_route_path_flags[N_LCP_ITF_HOST] = { [LCP_ITF_HOST_TAP] = FIB_ROUTE_PATH_DVR, [LCP_ITF_HOST_TUN] = FIB_ROUTE_PATH_FLAG_NONE, }; static void lcp_itf_unset_adjs (lcp_itf_pair_t *lip) { adj_unlock (lip->lip_phy_adjs.adj_index[AF_IP4]); adj_unlock (lip->lip_phy_adjs.adj_index[AF_IP6]); } static void lcp_itf_set_adjs (lcp_itf_pair_t *lip) { if (lip->lip_host_type == LCP_ITF_HOST_TUN) { lip->lip_phy_adjs.adj_index[AF_IP4] = adj_nbr_add_or_lock ( FIB_PROTOCOL_IP4, VNET_LINK_IP4, &zero_addr, lip->lip_phy_sw_if_index); lip->lip_phy_adjs.adj_index[AF_IP6] = adj_nbr_add_or_lock ( FIB_PROTOCOL_IP6, VNET_LINK_IP6, &zero_addr, lip->lip_phy_sw_if_index); } else { lip->lip_phy_adjs.adj_index[AF_IP4] = adj_mcast_add_or_lock ( FIB_PROTOCOL_IP4, VNET_LINK_IP4, lip->lip_phy_sw_if_index); lip->lip_phy_adjs.adj_index[AF_IP6] = adj_mcast_add_or_lock ( FIB_PROTOCOL_IP6, VNET_LINK_IP6, lip->lip_phy_sw_if_index); } ip_adjacency_t *adj; adj = adj_get (lip->lip_phy_adjs.adj_index[AF_IP4]); lip->lip_rewrite_len = adj->rewrite_header.data_bytes; } int __clib_weak lcp_nl_drain_messages (void) { return 0; } int lcp_itf_pair_add (u32 host_sw_if_index, u32 phy_sw_if_index, u8 *host_name, u32 host_index, lip_host_type_t host_type, u8 *ns) { index_t lipi; lcp_itf_pair_t *lip; lipi = lcp_itf_pair_find_by_phy (phy_sw_if_index); LCP_ITF_PAIR_INFO ("add: host:%U phy:%U, host_if:%v vif:%d ns:%v", format_vnet_sw_if_index_name, vnet_get_main (), host_sw_if_index, format_vnet_sw_if_index_name, vnet_get_main (), phy_sw_if_index, host_name, host_index, ns); if (lipi != INDEX_INVALID) return VNET_API_ERROR_VALUE_EXIST; /* * Drain netlink messages before adding the new pair. * This avoids unnecessarily applying messages that were generated by * the creation of the tap/tun interface. By processing them before we * store the pair data, we will ensure that they are ignored. */ lcp_nl_drain_messages (); /* * Create a new pair. */ pool_get (lcp_itf_pair_pool, lip); lipi = lip - lcp_itf_pair_pool; vec_validate_init_empty (lip_db_by_phy, phy_sw_if_index, INDEX_INVALID); vec_validate_init_empty (lip_db_by_host, host_sw_if_index, INDEX_INVALID); lip_db_by_phy[phy_sw_if_index] = lipi; lip_db_by_host[host_sw_if_index] = lipi; hash_set (lip_db_by_vif, host_index, lipi); lip->lip_host_sw_if_index = host_sw_if_index; lip->lip_phy_sw_if_index = phy_sw_if_index; lip->lip_host_name = vec_dup (host_name); lip->lip_host_type = host_type; lip->lip_vif_index = host_index; lip->lip_namespace = vec_dup (ns); lip->lip_create_ts = vlib_time_now (vlib_get_main ()); if (lip->lip_host_sw_if_index == ~0) return 0; /* * First use of this host interface. * Enable the x-connect feature on the host to send * all packets to the phy. */ ip_address_family_t af; FOR_EACH_IP_ADDRESS_FAMILY (af) ip_feature_enable_disable (af, N_SAFI, IP_FEATURE_INPUT, lcp_itf_l3_feat_names[lip->lip_host_type][af], lip->lip_host_sw_if_index, 1, NULL, 0); /* * Configure passive punt to the host interface. */ fib_route_path_t *rpaths = NULL, rpath = { .frp_flags = lcp_itf_route_path_flags[lip->lip_host_type], .frp_proto = DPO_PROTO_IP4, .frp_sw_if_index = lip->lip_host_sw_if_index, .frp_weight = 1, .frp_fib_index = ~0, }; vec_add1 (rpaths, rpath); ip4_punt_redirect_add_paths (lip->lip_phy_sw_if_index, rpaths); rpaths[0].frp_proto = DPO_PROTO_IP6; ip6_punt_redirect_add_paths (lip->lip_phy_sw_if_index, rpaths); vec_free (rpaths); lcp_itf_set_adjs (lip); /* enable ARP feature node for broadcast interfaces */ if (lip->lip_host_type != LCP_ITF_HOST_TUN) { vnet_feature_enable_disable ("arp", "linux-cp-arp-phy", lip->lip_phy_sw_if_index, 1, NULL, 0); vnet_feature_enable_disable ("arp", "linux-cp-arp-host", lip->lip_host_sw_if_index, 1, NULL, 0); } else { vnet_feature_enable_disable ("ip4-punt", "linux-cp-punt-l3", 0, 1, NULL, 0); vnet_feature_enable_disable ("ip6-punt", "linux-cp-punt-l3", 0, 1, NULL, 0); } return 0; } static clib_error_t * lcp_netlink_add_link_vlan (int parent, u32 vlan, const char *name) { struct rtnl_link *link; struct nl_sock *sk; int err; sk = nl_socket_alloc (); if ((err = nl_connect (sk, NETLINK_ROUTE)) < 0) return clib_error_return (NULL, "Unable to connect socket: %d", err); link = rtnl_link_vlan_alloc (); rtnl_link_set_link (link, parent); rtnl_link_set_name (link, name); rtnl_link_vlan_set_id (link, vlan); if ((err = rtnl_link_add (sk, link, NLM_F_CREATE)) < 0) return clib_error_return (NULL, "Unable to add link %s: %d", name, err); rtnl_link_put (link); nl_close (sk); return NULL; } static clib_error_t * lcp_netlink_del_link (const char *name) { struct rtnl_link *link; struct nl_sock *sk; int err; sk = nl_socket_alloc (); if ((err = nl_connect (sk, NETLINK_ROUTE)) < 0) return clib_error_return (NULL, "Unable to connect socket: %d", err); link = rtnl_link_alloc (); rtnl_link_set_name (link, name); if ((err = rtnl_link_delete (sk, link)) < 0) return clib_error_return (NULL, "Unable to del link %s: %d", name, err); rtnl_link_put (link); nl_close (sk); return NULL; } int lcp_itf_pair_del (u32 phy_sw_if_index) { ip_address_family_t af; lcp_itf_pair_t *lip; u32 lipi; lipi = lcp_itf_pair_find_by_phy (phy_sw_if_index); if (lipi == INDEX_INVALID) return VNET_API_ERROR_INVALID_SW_IF_INDEX; lip = lcp_itf_pair_get (lipi); LCP_ITF_PAIR_INFO ("pair delete: {%U, %U, %s}", format_vnet_sw_if_index_name, vnet_get_main (), lip->lip_phy_sw_if_index, format_vnet_sw_if_index_name, vnet_get_main (), lip->lip_host_sw_if_index, lip->lip_host_name); FOR_EACH_IP_ADDRESS_FAMILY (af) ip_feature_enable_disable (af, N_SAFI, IP_FEATURE_INPUT, lcp_itf_l3_feat_names[lip->lip_host_type][af], lip->lip_host_sw_if_index, 0, NULL, 0); lcp_itf_unset_adjs (lip); ip4_punt_redirect_del (lip->lip_phy_sw_if_index); ip6_punt_redirect_del (lip->lip_phy_sw_if_index); /* disable ARP feature node for broadcast interfaces */ if (lip->lip_host_type != LCP_ITF_HOST_TUN) { vnet_feature_enable_disable ("arp", "linux-cp-arp-phy", lip->lip_phy_sw_if_index, 0, NULL, 0); vnet_feature_enable_disable ("arp", "linux-cp-arp-host", lip->lip_host_sw_if_index, 0, NULL, 0); } else { vnet_feature_enable_disable ("ip4-punt", "linux-cp-punt-l3", 0, 0, NULL, 0); vnet_feature_enable_disable ("ip6-punt", "linux-cp-punt-l3", 0, 0, NULL, 0); } lip_db_by_phy[phy_sw_if_index] = INDEX_INVALID; lip_db_by_phy[lip->lip_host_sw_if_index] = INDEX_INVALID; vec_free (lip->lip_host_name); vec_free (lip->lip_namespace); pool_put (lcp_itf_pair_pool, lip); return 0; } static void lcp_itf_pair_delete_by_index (index_t lipi) { u32 host_sw_if_index; lcp_itf_pair_t *lip; u8 *host_name; lip = lcp_itf_pair_get (lipi); host_name = vec_dup (lip->lip_host_name); host_sw_if_index = lip->lip_host_sw_if_index; lcp_itf_pair_del (lip->lip_phy_sw_if_index); if (vnet_sw_interface_is_sub (vnet_get_main (), host_sw_if_index)) { lcp_netlink_del_link ((const char *) host_name); vnet_delete_sub_interface (host_sw_if_index); } else tap_delete_if (vlib_get_main (), host_sw_if_index); vec_free (host_name); } int lcp_itf_pair_delete (u32 phy_sw_if_index) { index_t lipi; lipi = lcp_itf_pair_find_by_phy (phy_sw_if_index); if (lipi == INDEX_INVALID) return VNET_API_ERROR_INVALID_SW_IF_INDEX; lcp_itf_pair_delete_by_index (lipi); return 0; } void lcp_itf_pair_walk (lcp_itf_pair_walk_cb_t cb, void *ctx) { u32 api; pool_foreach_index (api, lcp_itf_pair_pool) { if (!cb (api, ctx)) break; }; } typedef struct lcp_itf_pair_names_t_ { u8 *lipn_host_name; u8 *lipn_phy_name; u8 *lipn_namespace; u32 lipn_phy_sw_if_index; } lcp_itf_pair_names_t; static lcp_itf_pair_names_t *lipn_names; static clib_error_t * lcp_itf_pair_config (vlib_main_t *vm, unformat_input_t *input) { u8 *host, *phy; u8 *ns; u8 *default_ns; host = phy = ns = default_ns = NULL; while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) { vec_reset_length (host); if (unformat (input, "pair %s %s %s", &phy, &host, &ns)) { lcp_itf_pair_names_t *lipn; if (vec_len (ns) > LCP_NS_LEN) { return clib_error_return (0, "linux-cp IF namespace must" " be less than %d characters", LCP_NS_LEN); } vec_add2 (lipn_names, lipn, 1); lipn->lipn_host_name = vec_dup (host); lipn->lipn_phy_name = vec_dup (phy); lipn->lipn_namespace = vec_dup (ns); } else if (unformat (input, "pair %v %v", &phy, &host)) { lcp_itf_pair_names_t *lipn; vec_add2 (lipn_names, lipn, 1); lipn->lipn_host_name = vec_dup (host); lipn->lipn_phy_name = vec_dup (phy); lipn->lipn_namespace = 0; } else if (unformat (input, "default netns %v", &default_ns)) { vec_add1 (default_ns, 0); if (lcp_set_default_ns (default_ns) < 0) { return clib_error_return (0, "linux-cp default namespace must" " be less than %d characters", LCP_NS_LEN); } } else if (unformat (input, "interface-auto-create")) lcp_set_auto_intf (1 /* is_auto */); else return clib_error_return (0, "interfaces not found"); } vec_free (host); vec_free (phy); vec_free (default_ns); return NULL; } VLIB_EARLY_CONFIG_FUNCTION (lcp_itf_pair_config, "linux-cp"); /* * Returns 1 if the tap name is valid. * Returns 0 if the tap name is invalid. */ static int lcp_validate_if_name (u8 *name) { int len; char *p; p = (char *) name; len = clib_strnlen (p, IFNAMSIZ); if (len >= IFNAMSIZ) return 0; for (; *p; ++p) { if (isalnum (*p)) continue; switch (*p) { case '-': case '_': case '%': case '@': case ':': case '.': continue; } return 0; } return 1; } static int lcp_itf_get_ns_fd (char *ns_name) { char ns_path[256] = "/proc/self/ns/net"; if (ns_name) snprintf (ns_path, sizeof (ns_path) - 1, "/var/run/netns/%s", ns_name); return open (ns_path, O_RDONLY); } static void lcp_itf_set_vif_link_state (u32 vif_index, u8 up, u8 *ns) { int curr_ns_fd, vif_ns_fd; curr_ns_fd = vif_ns_fd = -1; if (ns) { u8 *ns_path = 0; curr_ns_fd = open ("/proc/self/ns/net", O_RDONLY); ns_path = format (0, "/var/run/netns/%s%c", (char *) ns, 0); vif_ns_fd = open ((char *) ns_path, O_RDONLY); if (vif_ns_fd != -1) setns (vif_ns_fd, CLONE_NEWNET); } vnet_netlink_set_link_state (vif_index, up); if (vif_ns_fd != -1) close (vif_ns_fd); if (curr_ns_fd != -1) { setns (curr_ns_fd, CLONE_NEWNET); close (curr_ns_fd); } } int lcp_itf_pair_create (u32 phy_sw_if_index, u8 *host_if_name, lip_host_type_t host_if_type, u8 *ns) { vlib_main_t *vm; vnet_main_t *vnm; u32 vif_index = 0, host_sw_if_index; const vnet_sw_interface_t *sw; const vnet_hw_interface_t *hw; if (!vnet_sw_if_index_is_api_valid (phy_sw_if_index)) return VNET_API_ERROR_INVALID_SW_IF_INDEX; if (!lcp_validate_if_name (host_if_name)) return VNET_API_ERROR_INVALID_ARGUMENT; vnm = vnet_get_main (); sw = vnet_get_sw_interface (vnm, phy_sw_if_index); hw = vnet_get_sup_hw_interface (vnm, phy_sw_if_index); /* * Use interface-specific netns if supplied. * Otherwise, use default netns if defined. * Otherwise ignore a netns and use the OS default. */ if (ns == 0 || ns[0] == 0) ns = lcp_get_default_ns (); /* sub interfaces do not need a tap created */ if (vnet_sw_interface_is_sub (vnm, phy_sw_if_index)) { const lcp_itf_pair_t *lip; int orig_ns_fd, ns_fd; clib_error_t *err; u16 vlan; /* * Find the parent tap by finding the pair from the parent phy */ lip = lcp_itf_pair_get (lcp_itf_pair_find_by_phy (sw->sup_sw_if_index)); vlan = sw->sub.eth.outer_vlan_id; /* * see if the requested host interface has already been created */ orig_ns_fd = ns_fd = -1; err = NULL; if (ns && ns[0] != 0) { orig_ns_fd = lcp_itf_get_ns_fd (NULL); ns_fd = lcp_itf_get_ns_fd ((char *) ns); if (orig_ns_fd == -1 || ns_fd == -1) goto socket_close; setns (ns_fd, CLONE_NEWNET); } vif_index = if_nametoindex ((const char *) host_if_name); if (!vif_index) { /* * no existing host interface, create it now */ err = lcp_netlink_add_link_vlan (lip->lip_vif_index, vlan, (const char *) host_if_name); if (!err && -1 != ns_fd) err = vnet_netlink_set_link_netns (vif_index, ns_fd, NULL); if (!err) vif_index = if_nametoindex ((char *) host_if_name); } /* * create a sub-interface on the tap */ if (!err && vnet_create_sub_interface (lip->lip_host_sw_if_index, sw->sub.id, sw->sub.eth.raw_flags, sw->sub.eth.inner_vlan_id, vlan, &host_sw_if_index)) LCP_ITF_PAIR_INFO ("failed create vlan: %d on %U", vlan, format_vnet_sw_if_index_name, vnet_get_main (), lip->lip_host_sw_if_index); socket_close: if (orig_ns_fd != -1) { setns (orig_ns_fd, CLONE_NEWNET); close (orig_ns_fd); } if (ns_fd != -1) close (ns_fd); if (err) return VNET_API_ERROR_INVALID_ARGUMENT; } else { tap_create_if_args_t args = { .num_rx_queues = clib_max (1, vlib_num_workers ()), .id = hw->hw_if_index, .sw_if_index = ~0, .rx_ring_sz = 256, .tx_ring_sz = 256, .host_if_name = host_if_name, .host_namespace = 0, }; ethernet_interface_t *ei; if (host_if_type == LCP_ITF_HOST_TUN) args.tap_flags |= TAP_FLAG_TUN; else { ei = pool_elt_at_index (ethernet_main.interfaces, hw->hw_instance); mac_address_copy (&args.host_mac_addr, &ei->address.mac); } if (sw->mtu[VNET_MTU_L3]) { args.host_mtu_set = 1; args.host_mtu_size = sw->mtu[VNET_MTU_L3]; } if (ns && ns[0] != 0) args.host_namespace = ns; vm = vlib_get_main (); tap_create_if (vm, &args); if (args.rv < 0) { return args.rv; } /* * get the hw and ethernet of the tap */ hw = vnet_get_sup_hw_interface (vnm, args.sw_if_index); /* * Set the interface down on the host side. * This controls whether the host can RX/TX. */ virtio_main_t *mm = &virtio_main; virtio_if_t *vif = pool_elt_at_index (mm->interfaces, hw->dev_instance); lcp_itf_set_vif_link_state (vif->ifindex, 0 /* down */, args.host_namespace); /* * Leave the TAP permanently up on the VPP side. * This TAP will be shared by many sub-interface. * Therefore we can't use it to manage admin state. * force the tap in promiscuous mode. */ if (host_if_type == LCP_ITF_HOST_TAP) { ei = pool_elt_at_index (ethernet_main.interfaces, hw->hw_instance); ei->flags |= ETHERNET_INTERFACE_FLAG_STATUS_L3; } vif_index = vif->ifindex; host_sw_if_index = args.sw_if_index; } if (!vif_index) { LCP_ITF_PAIR_INFO ("failed pair add (no vif index): {%U, %U, %s}", format_vnet_sw_if_index_name, vnet_get_main (), phy_sw_if_index, format_vnet_sw_if_index_name, vnet_get_main (), host_sw_if_index, host_if_name); return -1; } vnet_sw_interface_admin_up (vnm, host_sw_if_index); lcp_itf_pair_add (host_sw_if_index, phy_sw_if_index, host_if_name, vif_index, host_if_type, ns); LCP_ITF_PAIR_INFO ("pair create: {%U, %U, %s}", format_vnet_sw_if_index_name, vnet_get_main (), phy_sw_if_index, format_vnet_sw_if_index_name, vnet_get_main (), host_sw_if_index, host_if_name); return 0; } static walk_rc_t lcp_itf_pair_walk_mark (index_t lipi, void *ctx) { lcp_itf_pair_t *lip; lip = lcp_itf_pair_get (lipi); lip->lip_flags |= LIP_FLAG_STALE; return (WALK_CONTINUE); } int lcp_itf_pair_replace_begin (void) { lcp_itf_pair_walk (lcp_itf_pair_walk_mark, NULL); return (0); } typedef struct lcp_itf_pair_sweep_ctx_t_ { index_t *indicies; } lcp_itf_pair_sweep_ctx_t; static walk_rc_t lcp_itf_pair_walk_sweep (index_t lipi, void *arg) { lcp_itf_pair_sweep_ctx_t *ctx = arg; lcp_itf_pair_t *lip; lip = lcp_itf_pair_get (lipi); if (lip->lip_flags & LIP_FLAG_STALE) vec_add1 (ctx->indicies, lipi); return (WALK_CONTINUE); } int lcp_itf_pair_replace_end (void) { lcp_itf_pair_sweep_ctx_t ctx = { .indicies = NULL, }; index_t *lipi; lcp_itf_pair_walk (lcp_itf_pair_walk_sweep, &ctx); vec_foreach (lipi, ctx.indicies) lcp_itf_pair_delete_by_index (*lipi); vec_free (ctx.indicies); return (0); } static uword lcp_itf_pair_process (vlib_main_t *vm, vlib_node_runtime_t *rt, vlib_frame_t *f) { uword *event_data = 0; uword *lipn_index; while (1) { vlib_process_wait_for_event (vm); vlib_process_get_events (vm, &event_data); vec_foreach (lipn_index, event_data) { lcp_itf_pair_names_t *lipn; lipn = &lipn_names[*lipn_index]; lcp_itf_pair_create (lipn->lipn_phy_sw_if_index, lipn->lipn_host_name, LCP_ITF_HOST_TAP, lipn->lipn_namespace); } vec_reset_length (event_data); } return 0; } VLIB_REGISTER_NODE (lcp_itf_pair_process_node, static) = { .function = lcp_itf_pair_process, .name = "linux-cp-itf-process", .type = VLIB_NODE_TYPE_PROCESS, }; static clib_error_t * lcp_itf_phy_add (vnet_main_t *vnm, u32 sw_if_index, u32 is_create) { lcp_itf_pair_names_t *lipn; vlib_main_t *vm = vlib_get_main (); vnet_hw_interface_t *hw; if (!is_create || vnet_sw_interface_is_sub (vnm, sw_if_index)) return NULL; hw = vnet_get_sup_hw_interface (vnm, sw_if_index); vec_foreach (lipn, lipn_names) { if (!vec_cmp (hw->name, lipn->lipn_phy_name)) { lipn->lipn_phy_sw_if_index = sw_if_index; vlib_process_signal_event (vm, lcp_itf_pair_process_node.index, 0, lipn - lipn_names); break; } } return NULL; } VNET_SW_INTERFACE_ADD_DEL_FUNCTION (lcp_itf_phy_add); static clib_error_t * lcp_itf_pair_link_up_down (vnet_main_t *vnm, u32 hw_if_index, u32 flags) { vnet_hw_interface_t *hi; vnet_sw_interface_t *si; index_t lipi; lcp_itf_pair_t *lip; hi = vnet_get_hw_interface_or_null (vnm, hw_if_index); if (!hi) return 0; lipi = lcp_itf_pair_find_by_phy (hi->sw_if_index); if (lipi == INDEX_INVALID) return 0; lip = lcp_itf_pair_get (lipi); si = vnet_get_sw_interface_or_null (vnm, lip->lip_host_sw_if_index); if (!si) return 0; if (!lcp_main.test_mode) { tap_set_carrier (si->hw_if_index, (flags & VNET_HW_INTERFACE_FLAG_LINK_UP)); if (flags & VNET_HW_INTERFACE_FLAG_LINK_UP) { tap_set_speed (si->hw_if_index, hi->link_speed / 1000); } } return 0; } VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION (lcp_itf_pair_link_up_down); static clib_error_t * lcp_itf_pair_init (vlib_main_t *vm) { vlib_punt_hdl_t punt_hdl = vlib_punt_client_register ("linux-cp"); /* punt IKE */ vlib_punt_register (punt_hdl, ipsec_punt_reason[IPSEC_PUNT_IP4_SPI_UDP_0], "linux-cp-punt"); /* punt all unknown ports */ udp_punt_unknown (vm, 0, 1); udp_punt_unknown (vm, 1, 1); tcp_punt_unknown (vm, 0, 1); tcp_punt_unknown (vm, 1, 1); lcp_itf_pair_logger = vlib_log_register_class ("linux-cp", "itf"); return NULL; } VLIB_INIT_FUNCTION (lcp_itf_pair_init) = { .runs_after = VLIB_INITS ("vnet_interface_init", "tcp_init", "udp_init"), }; /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */