--- /dev/null
+/*
+ * gbp.h : Group Based Policy
+ *
+ * Copyright (c) 2018 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.
+ */
+
+#include <plugins/gbp/gbp_endpoint.h>
+#include <plugins/gbp/gbp_endpoint_group.h>
+#include <plugins/gbp/gbp_itf.h>
+#include <plugins/gbp/gbp_scanner.h>
+#include <plugins/gbp/gbp_bridge_domain.h>
+#include <plugins/gbp/gbp_route_domain.h>
+#include <plugins/gbp/gbp_policy_dpo.h>
+#include <plugins/gbp/gbp_vxlan.h>
+
+#include <vnet/l2/l2_input.h>
+#include <vnet/l2/l2_output.h>
+#include <vnet/l2/feat_bitmap.h>
+#include <vnet/l2/l2_fib.h>
+#include <vnet/fib/fib_table.h>
+#include <vnet/ip-neighbor/ip_neighbor.h>
+#include <vnet/ip-neighbor/ip4_neighbor.h>
+#include <vnet/ip-neighbor/ip6_neighbor.h>
+#include <vnet/fib/fib_walk.h>
+#include <vnet/vxlan-gbp/vxlan_gbp.h>
+
+static const char *gbp_endpoint_attr_names[] = GBP_ENDPOINT_ATTR_NAMES;
+
+/**
+ * EP DBs
+ */
+gbp_ep_db_t gbp_ep_db;
+
+static fib_source_t gbp_fib_source_hi;
+static fib_source_t gbp_fib_source_low;
+static fib_node_type_t gbp_endpoint_fib_type;
+static vlib_log_class_t gbp_ep_logger;
+
+#define GBP_ENDPOINT_DBG(...) \
+ vlib_log_debug (gbp_ep_logger, __VA_ARGS__);
+
+#define GBP_ENDPOINT_INFO(...) \
+ vlib_log_notice (gbp_ep_logger, __VA_ARGS__);
+
+/**
+ * Pool of GBP endpoints
+ */
+gbp_endpoint_t *gbp_endpoint_pool;
+
+/**
+ * A count of the number of dynamic entries
+ */
+static u32 gbp_n_learnt_endpoints;
+
+#define FOR_EACH_GBP_ENDPOINT_ATTR(_item) \
+ for (_item = GBP_ENDPOINT_ATTR_FIRST; \
+ _item < GBP_ENDPOINT_ATTR_LAST; \
+ _item++)
+
+u8 *
+format_gbp_endpoint_flags (u8 * s, va_list * args)
+{
+ gbp_endpoint_attr_t attr;
+ gbp_endpoint_flags_t flags = va_arg (*args, gbp_endpoint_flags_t);
+
+ FOR_EACH_GBP_ENDPOINT_ATTR (attr)
+ {
+ if ((1 << attr) & flags)
+ {
+ s = format (s, "%s,", gbp_endpoint_attr_names[attr]);
+ }
+ }
+
+ return (s);
+}
+
+int
+gbp_endpoint_is_remote (const gbp_endpoint_t * ge)
+{
+ return (! !(ge->ge_fwd.gef_flags & GBP_ENDPOINT_FLAG_REMOTE));
+}
+
+int
+gbp_endpoint_is_local (const gbp_endpoint_t * ge)
+{
+ return (!(ge->ge_fwd.gef_flags & GBP_ENDPOINT_FLAG_REMOTE));
+}
+
+int
+gbp_endpoint_is_external (const gbp_endpoint_t * ge)
+{
+ return (! !(ge->ge_fwd.gef_flags & GBP_ENDPOINT_FLAG_EXTERNAL));
+}
+
+int
+gbp_endpoint_is_learnt (const gbp_endpoint_t * ge)
+{
+ if (0 == vec_len (ge->ge_locs))
+ return 0;
+
+ /* DP is the highest source so if present it will be first */
+ return (ge->ge_locs[0].gel_src == GBP_ENDPOINT_SRC_DP);
+}
+
+static void
+gbp_endpoint_extract_key_mac_itf (const clib_bihash_kv_16_8_t * key,
+ mac_address_t * mac, u32 * sw_if_index)
+{
+ mac_address_from_u64 (mac, key->key[0]);
+ *sw_if_index = key->key[1];
+}
+
+static void
+gbp_endpoint_extract_key_ip_itf (const clib_bihash_kv_24_8_t * key,
+ ip46_address_t * ip, u32 * sw_if_index)
+{
+ ip->as_u64[0] = key->key[0];
+ ip->as_u64[1] = key->key[1];
+ *sw_if_index = key->key[2];
+}
+
+gbp_endpoint_t *
+gbp_endpoint_find_ip (const ip46_address_t * ip, u32 fib_index)
+{
+ clib_bihash_kv_24_8_t key, value;
+ int rv;
+
+ gbp_endpoint_mk_key_ip (ip, fib_index, &key);
+
+ rv = clib_bihash_search_24_8 (&gbp_ep_db.ged_by_ip_rd, &key, &value);
+
+ if (0 != rv)
+ return NULL;
+
+ return (gbp_endpoint_get (value.value));
+}
+
+static void
+gbp_endpoint_add_itf (u32 sw_if_index, index_t gei)
+{
+ vec_validate_init_empty (gbp_ep_db.ged_by_sw_if_index, sw_if_index, ~0);
+
+ gbp_ep_db.ged_by_sw_if_index[sw_if_index] = gei;
+}
+
+static bool
+gbp_endpoint_add_mac (const mac_address_t * mac, u32 bd_index, index_t gei)
+{
+ clib_bihash_kv_16_8_t key;
+ int rv;
+
+ gbp_endpoint_mk_key_mac (mac->bytes, bd_index, &key);
+ key.value = gei;
+
+ rv = clib_bihash_add_del_16_8 (&gbp_ep_db.ged_by_mac_bd, &key, 1);
+
+
+ return (0 == rv);
+}
+
+static bool
+gbp_endpoint_add_ip (const ip46_address_t * ip, u32 fib_index, index_t gei)
+{
+ clib_bihash_kv_24_8_t key;
+ int rv;
+
+ gbp_endpoint_mk_key_ip (ip, fib_index, &key);
+ key.value = gei;
+
+ rv = clib_bihash_add_del_24_8 (&gbp_ep_db.ged_by_ip_rd, &key, 1);
+
+ return (0 == rv);
+}
+
+static void
+gbp_endpoint_del_mac (const mac_address_t * mac, u32 bd_index)
+{
+ clib_bihash_kv_16_8_t key;
+
+ gbp_endpoint_mk_key_mac (mac->bytes, bd_index, &key);
+
+ clib_bihash_add_del_16_8 (&gbp_ep_db.ged_by_mac_bd, &key, 0);
+}
+
+static void
+gbp_endpoint_del_ip (const ip46_address_t * ip, u32 fib_index)
+{
+ clib_bihash_kv_24_8_t key;
+
+ gbp_endpoint_mk_key_ip (ip, fib_index, &key);
+
+ clib_bihash_add_del_24_8 (&gbp_ep_db.ged_by_ip_rd, &key, 0);
+}
+
+static index_t
+gbp_endpoint_index (const gbp_endpoint_t * ge)
+{
+ return (ge - gbp_endpoint_pool);
+}
+
+static int
+gbp_endpoint_ip_is_equal (const fib_prefix_t * fp, const ip46_address_t * ip)
+{
+ return (ip46_address_is_equal (ip, &fp->fp_addr));
+}
+
+static void
+gbp_endpoint_ips_update (gbp_endpoint_t * ge,
+ const ip46_address_t * ips,
+ const gbp_route_domain_t * grd)
+{
+ const ip46_address_t *ip;
+ index_t gei, grdi;
+
+ gei = gbp_endpoint_index (ge);
+ grdi = gbp_route_domain_index (grd);
+
+ ASSERT ((ge->ge_key.gek_grd == INDEX_INVALID) ||
+ (ge->ge_key.gek_grd == grdi));
+
+ vec_foreach (ip, ips)
+ {
+ if (~0 == vec_search_with_function (ge->ge_key.gek_ips, ip,
+ gbp_endpoint_ip_is_equal))
+ {
+ fib_prefix_t *pfx;
+
+ vec_add2 (ge->ge_key.gek_ips, pfx, 1);
+ fib_prefix_from_ip46_addr (ip, pfx);
+
+ gbp_endpoint_add_ip (&pfx->fp_addr,
+ grd->grd_fib_index[pfx->fp_proto], gei);
+ }
+ ge->ge_key.gek_grd = grdi;
+ }
+}
+
+static gbp_endpoint_t *
+gbp_endpoint_alloc (const ip46_address_t * ips,
+ const gbp_route_domain_t * grd,
+ const mac_address_t * mac,
+ const gbp_bridge_domain_t * gbd)
+{
+ gbp_endpoint_t *ge;
+ index_t gei;
+
+ pool_get_zero (gbp_endpoint_pool, ge);
+
+ fib_node_init (&ge->ge_node, gbp_endpoint_fib_type);
+ gei = gbp_endpoint_index (ge);
+ ge->ge_key.gek_gbd =
+ ge->ge_key.gek_grd = ge->ge_fwd.gef_fib_index = INDEX_INVALID;
+ gbp_itf_hdl_reset (&ge->ge_fwd.gef_itf);
+ ge->ge_last_time = vlib_time_now (vlib_get_main ());
+ ge->ge_key.gek_gbd = gbp_bridge_domain_index (gbd);
+
+ if (NULL != mac)
+ {
+ mac_address_copy (&ge->ge_key.gek_mac, mac);
+ gbp_endpoint_add_mac (mac, gbd->gb_bd_index, gei);
+ }
+ gbp_endpoint_ips_update (ge, ips, grd);
+
+ return (ge);
+}
+
+static int
+gbp_endpoint_loc_is_equal (gbp_endpoint_loc_t * a, gbp_endpoint_loc_t * b)
+{
+ return (a->gel_src == b->gel_src);
+}
+
+static int
+gbp_endpoint_loc_cmp_for_sort (gbp_endpoint_loc_t * a, gbp_endpoint_loc_t * b)
+{
+ return (a->gel_src - b->gel_src);
+}
+
+static gbp_endpoint_loc_t *
+gbp_endpoint_loc_find (gbp_endpoint_t * ge, gbp_endpoint_src_t src)
+{
+ gbp_endpoint_loc_t gel = {
+ .gel_src = src,
+ };
+ u32 pos;
+
+ pos = vec_search_with_function (ge->ge_locs, &gel,
+ gbp_endpoint_loc_is_equal);
+
+ if (~0 != pos)
+ return (&ge->ge_locs[pos]);
+
+ return NULL;
+}
+
+static int
+gbp_endpoint_loc_unlock (gbp_endpoint_t * ge, gbp_endpoint_loc_t * gel)
+{
+ u32 pos;
+
+ gel->gel_locks--;
+
+ if (0 == gel->gel_locks)
+ {
+ pos = gel - ge->ge_locs;
+
+ vec_del1 (ge->ge_locs, pos);
+ if (vec_len (ge->ge_locs) > 1)
+ vec_sort_with_function (ge->ge_locs, gbp_endpoint_loc_cmp_for_sort);
+
+ /* This could be the last lock, so don't access the EP from
+ * this point on */
+ fib_node_unlock (&ge->ge_node);
+
+ return (1);
+ }
+ return (0);
+}
+
+static void
+gbp_endpoint_loc_destroy (gbp_endpoint_loc_t * gel)
+{
+ gbp_endpoint_group_unlock (gel->gel_epg);
+ gbp_itf_unlock (&gel->gel_itf);
+}
+
+static gbp_endpoint_loc_t *
+gbp_endpoint_loc_find_or_add (gbp_endpoint_t * ge, gbp_endpoint_src_t src)
+{
+ gbp_endpoint_loc_t gel = {
+ .gel_src = src,
+ .gel_epg = INDEX_INVALID,
+ .gel_itf = GBP_ITF_HDL_INVALID,
+ .gel_locks = 0,
+ };
+ u32 pos;
+
+ pos = vec_search_with_function (ge->ge_locs, &gel,
+ gbp_endpoint_loc_is_equal);
+
+ if (~0 == pos)
+ {
+ vec_add1 (ge->ge_locs, gel);
+
+ if (vec_len (ge->ge_locs) > 1)
+ {
+ vec_sort_with_function (ge->ge_locs, gbp_endpoint_loc_cmp_for_sort);
+
+ pos = vec_search_with_function (ge->ge_locs, &gel,
+ gbp_endpoint_loc_is_equal);
+ }
+ else
+ pos = 0;
+
+ /*
+ * it's the sources and children that lock the endpoints
+ */
+ fib_node_lock (&ge->ge_node);
+ }
+
+ return (&ge->ge_locs[pos]);
+}
+
+/**
+ * Find an EP inthe DBs and check that if we find it in the L2 DB
+ * it has the same IPs as this update
+ */
+static int
+gbp_endpoint_find_for_update (const ip46_address_t * ips,
+ const gbp_route_domain_t * grd,
+ const mac_address_t * mac,
+ const gbp_bridge_domain_t * gbd,
+ gbp_endpoint_t ** ge)
+{
+ gbp_endpoint_t *l2_ge, *l3_ge, *tmp;
+
+ l2_ge = l3_ge = NULL;
+
+ if (NULL != mac && !mac_address_is_zero (mac))
+ {
+ ASSERT (gbd);
+ l2_ge = gbp_endpoint_find_mac (mac->bytes, gbd->gb_bd_index);
+ }
+ if (NULL != ips && !ip46_address_is_zero (ips))
+ {
+ const ip46_address_t *ip;
+ fib_protocol_t fproto;
+
+ ASSERT (grd);
+ vec_foreach (ip, ips)
+ {
+ fproto = fib_proto_from_ip46 (ip46_address_get_type (ip));
+
+ tmp = gbp_endpoint_find_ip (ip, grd->grd_fib_index[fproto]);
+
+ if (NULL == tmp)
+ /* not found */
+ continue;
+ else if (NULL == l3_ge)
+ /* first match against an IP address */
+ l3_ge = tmp;
+ else if (tmp == l3_ge)
+ /* another match against IP address that is the same endpoint */
+ continue;
+ else
+ {
+ /*
+ * a match agains a different endpoint.
+ * this means the KEY of the EP is changing which is not allowed
+ */
+ return (-1);
+ }
+ }
+ }
+
+ if (NULL == l2_ge && NULL == l3_ge)
+ /* not found */
+ *ge = NULL;
+ else if (NULL == l2_ge)
+ /* found at L3 */
+ *ge = l3_ge;
+ else if (NULL == l3_ge)
+ /* found at L2 */
+ *ge = l2_ge;
+ else
+ {
+ /* found both L3 and L2 - they must be the same else the KEY
+ * is changing
+ */
+ if (l2_ge == l3_ge)
+ *ge = l2_ge;
+ else
+ return (-1);
+ }
+
+ return (0);
+}
+
+static gbp_endpoint_src_t
+gbp_endpoint_get_best_src (const gbp_endpoint_t * ge)
+{
+ if (0 == vec_len (ge->ge_locs))
+ return (GBP_ENDPOINT_SRC_MAX);
+
+ return (ge->ge_locs[0].gel_src);
+}
+
+static void
+gbp_endpoint_n_learned (int n)
+{
+ gbp_n_learnt_endpoints += n;
+
+ if (n > 0 && 1 == gbp_n_learnt_endpoints)
+ {
+ vlib_process_signal_event (vlib_get_main (),
+ gbp_scanner_node.index,
+ GBP_ENDPOINT_SCAN_START, 0);
+ }
+ if (n < 0 && 0 == gbp_n_learnt_endpoints)
+ {
+ vlib_process_signal_event (vlib_get_main (),
+ gbp_scanner_node.index,
+ GBP_ENDPOINT_SCAN_STOP, 0);
+ }
+}
+
+static void
+gbp_endpoint_loc_update (const gbp_endpoint_t * ge,
+ gbp_endpoint_loc_t * gel,
+ const gbp_bridge_domain_t * gb,
+ u32 sw_if_index,
+ index_t ggi,
+ gbp_endpoint_flags_t flags,
+ const ip46_address_t * tun_src,
+ const ip46_address_t * tun_dst)
+{
+ int was_learnt, is_learnt;
+
+ gel->gel_locks++;
+ was_learnt = ! !(gel->gel_flags & GBP_ENDPOINT_FLAG_REMOTE);
+ gel->gel_flags = flags;
+ is_learnt = ! !(gel->gel_flags & GBP_ENDPOINT_FLAG_REMOTE);
+
+ gbp_endpoint_n_learned (is_learnt - was_learnt);
+
+ /*
+ * update the EPG
+ */
+ gbp_endpoint_group_lock (ggi);
+ gbp_endpoint_group_unlock (gel->gel_epg);
+ gel->gel_epg = ggi;
+
+ if (gel->gel_flags & GBP_ENDPOINT_FLAG_REMOTE)
+ {
+ if (NULL != tun_src)
+ ip46_address_copy (&gel->tun.gel_src, tun_src);
+ if (NULL != tun_dst)
+ ip46_address_copy (&gel->tun.gel_dst, tun_dst);
+
+ if (ip46_address_is_multicast (&gel->tun.gel_src))
+ {
+ /*
+ * we learnt the EP from the multicast tunnel.
+ * Create a unicast TEP from the packet's source
+ * and the fixed address of the BD's parent tunnel
+ */
+ const gbp_vxlan_tunnel_t *gt;
+
+ gt = gbp_vxlan_tunnel_get (gb->gb_vni);
+
+ if (NULL != gt)
+ {
+ ip46_address_copy (&gel->tun.gel_src, >->gt_src);
+ sw_if_index = gt->gt_sw_if_index;
+ }
+ }
+
+ /*
+ * the input interface may be the parent GBP-vxlan interface,
+ * create a child vlxan-gbp tunnel and use that as the endpoint's
+ * interface.
+ */
+ gbp_itf_hdl_t old = gel->gel_itf;
+
+ switch (gbp_vxlan_tunnel_get_type (sw_if_index))
+ {
+ case GBP_VXLAN_TEMPLATE_TUNNEL:
+ gel->tun.gel_parent_sw_if_index = sw_if_index;
+ gel->gel_itf = gbp_vxlan_tunnel_clone_and_lock (sw_if_index,
+ &gel->tun.gel_src,
+ &gel->tun.gel_dst);
+ break;
+ case VXLAN_GBP_TUNNEL:
+ gel->tun.gel_parent_sw_if_index =
+ vxlan_gbp_tunnel_get_parent (sw_if_index);
+ gel->gel_itf = vxlan_gbp_tunnel_lock_itf (sw_if_index);
+ break;
+ }
+
+ gbp_itf_unlock (&old);
+ }
+ else
+ {
+ gel->gel_itf = gbp_itf_l2_add_and_lock (sw_if_index,
+ ge->ge_key.gek_gbd);
+ }
+}
+
+static void
+gbb_endpoint_fwd_reset (gbp_endpoint_t * ge)
+{
+ const gbp_route_domain_t *grd;
+ const gbp_bridge_domain_t *gbd;
+ gbp_endpoint_fwd_t *gef;
+ const fib_prefix_t *pfx;
+ index_t *ai;
+
+ gbd = gbp_bridge_domain_get (ge->ge_key.gek_gbd);
+ gef = &ge->ge_fwd;
+
+ vec_foreach (pfx, ge->ge_key.gek_ips)
+ {
+ u32 fib_index;
+
+ grd = gbp_route_domain_get (ge->ge_key.gek_grd);
+ fib_index = grd->grd_fib_index[pfx->fp_proto];
+
+ bd_add_del_ip_mac (gbd->gb_bd_index, fib_proto_to_ip46 (pfx->fp_proto),
+ &pfx->fp_addr, &ge->ge_key.gek_mac, 0);
+
+ /*
+ * remove a host route
+ */
+ if (gbp_endpoint_is_remote (ge))
+ {
+ fib_table_entry_special_remove (fib_index, pfx, gbp_fib_source_hi);
+ }
+
+ fib_table_entry_delete (fib_index, pfx, gbp_fib_source_low);
+ }
+ vec_foreach (ai, gef->gef_adjs)
+ {
+ adj_unlock (*ai);
+ }
+
+ if (gbp_itf_hdl_is_valid (gef->gef_itf))
+ {
+ l2fib_del_entry (ge->ge_key.gek_mac.bytes,
+ gbd->gb_bd_index,
+ gbp_itf_get_sw_if_index (gef->gef_itf));
+ }
+
+ gbp_itf_unlock (&gef->gef_itf);
+ vec_free (gef->gef_adjs);
+}
+
+static void
+gbb_endpoint_fwd_recalc (gbp_endpoint_t * ge)
+{
+ const gbp_bridge_domain_t *gbd;
+ const gbp_endpoint_group_t *gg;
+ const gbp_route_domain_t *grd;
+ gbp_endpoint_loc_t *gel;
+ gbp_endpoint_fwd_t *gef;
+ const fib_prefix_t *pfx;
+ index_t gei;
+
+ /*
+ * locations are sort in source priority order
+ */
+ gei = gbp_endpoint_index (ge);
+ gel = &ge->ge_locs[0];
+ gef = &ge->ge_fwd;
+ gbd = gbp_bridge_domain_get (ge->ge_key.gek_gbd);
+
+ gef->gef_flags = gel->gel_flags;
+
+ if (INDEX_INVALID != gel->gel_epg)
+ {
+ gg = gbp_endpoint_group_get (gel->gel_epg);
+ gef->gef_sclass = gg->gg_sclass;
+ }
+ else
+ {
+ gg = NULL;
+ }
+
+ gef->gef_itf = gbp_itf_clone_and_lock (gel->gel_itf);
+
+ if (!mac_address_is_zero (&ge->ge_key.gek_mac))
+ {
+ gbp_itf_l2_set_input_feature (gef->gef_itf, L2INPUT_FEAT_GBP_FWD);
+
+ if (gbp_endpoint_is_remote (ge) || gbp_endpoint_is_external (ge))
+ {
+ /*
+ * bridged packets to external endpoints should be classifed
+ * based on the EP's/BD's EPG
+ */
+ gbp_itf_l2_set_output_feature (gef->gef_itf,
+ L2OUTPUT_FEAT_GBP_POLICY_MAC);
+ }
+ else
+ {
+ gbp_endpoint_add_itf (gbp_itf_get_sw_if_index (gef->gef_itf), gei);
+ gbp_itf_l2_set_output_feature (gef->gef_itf,
+ L2OUTPUT_FEAT_GBP_POLICY_PORT);
+ }
+ l2fib_add_entry (ge->ge_key.gek_mac.bytes,
+ gbd->gb_bd_index,
+ gbp_itf_get_sw_if_index (gef->gef_itf),
+ L2FIB_ENTRY_RESULT_FLAG_STATIC);
+ }
+
+ vec_foreach (pfx, ge->ge_key.gek_ips)
+ {
+ ethernet_header_t *eth;
+ u32 ip_sw_if_index;
+ u32 fib_index;
+ u8 *rewrite;
+ index_t ai;
+
+ rewrite = NULL;
+ grd = gbp_route_domain_get (ge->ge_key.gek_grd);
+ fib_index = grd->grd_fib_index[pfx->fp_proto];
+ gef->gef_fib_index = fib_index;
+
+ bd_add_del_ip_mac (gbd->gb_bd_index, fib_proto_to_ip46 (pfx->fp_proto),
+ &pfx->fp_addr, &ge->ge_key.gek_mac, 1);
+
+ /*
+ * add a host route via the EPG's BVI we need this because the
+ * adj fib does not install, due to cover refinement check, since
+ * the BVI's prefix is /32
+ */
+ vec_validate (rewrite, sizeof (*eth) - 1);
+ eth = (ethernet_header_t *) rewrite;
+
+ eth->type = clib_host_to_net_u16 ((pfx->fp_proto == FIB_PROTOCOL_IP4 ?
+ ETHERNET_TYPE_IP4 :
+ ETHERNET_TYPE_IP6));
+
+ if (gbp_endpoint_is_remote (ge))
+ {
+ /*
+ * for dynamic EPs we must add the IP adjacency via the learned
+ * tunnel since the BD will not contain the EP's MAC since it was
+ * L3 learned. The dst MAC address used is the 'BD's MAC'.
+ */
+ ip_sw_if_index = gbp_itf_get_sw_if_index (gef->gef_itf);
+
+ mac_address_to_bytes (gbp_route_domain_get_local_mac (),
+ eth->src_address);
+ mac_address_to_bytes (gbp_route_domain_get_remote_mac (),
+ eth->dst_address);
+ }
+ else
+ {
+ /*
+ * for the static EPs we add the IP adjacency via the BVI
+ * knowing that the BD has the MAC address to route to and
+ * that policy will be applied on egress to the EP's port
+ */
+ ip_sw_if_index = gbd->gb_bvi_sw_if_index;
+
+ clib_memcpy (eth->src_address,
+ vnet_sw_interface_get_hw_address (vnet_get_main (),
+ ip_sw_if_index),
+ sizeof (eth->src_address));
+ mac_address_to_bytes (&ge->ge_key.gek_mac, eth->dst_address);
+ }
+
+ fib_table_entry_path_add (fib_index, pfx,
+ gbp_fib_source_low,
+ FIB_ENTRY_FLAG_NONE,
+ fib_proto_to_dpo (pfx->fp_proto),
+ &pfx->fp_addr, ip_sw_if_index,
+ ~0, 1, NULL, FIB_ROUTE_PATH_FLAG_NONE);
+
+ ai = adj_nbr_add_or_lock_w_rewrite (pfx->fp_proto,
+ fib_proto_to_link (pfx->fp_proto),
+ &pfx->fp_addr,
+ ip_sw_if_index, rewrite);
+ vec_add1 (gef->gef_adjs, ai);
+
+ /*
+ * if the endpoint is external then routed packet to it must be
+ * classifed to the BD's EPG. but this will happen anyway with
+ * the GBP_MAC classification.
+ */
+
+ if (NULL != gg)
+ {
+ if (gbp_endpoint_is_remote (ge))
+ {
+ dpo_id_t policy_dpo = DPO_INVALID;
+
+ /*
+ * interpose a policy DPO from the endpoint so that policy
+ * is applied
+ */
+ gbp_policy_dpo_add_or_lock (fib_proto_to_dpo (pfx->fp_proto),
+ grd->grd_scope,
+ gg->gg_sclass, ~0, &policy_dpo);
+
+ fib_table_entry_special_dpo_add (fib_index, pfx,
+ gbp_fib_source_hi,
+ FIB_ENTRY_FLAG_INTERPOSE,
+ &policy_dpo);
+ dpo_reset (&policy_dpo);
+ }
+
+ /*
+ * send a gratuitous ARP on the EPG's uplink. this is done so
+ * that if this EP has moved from some other place in the
+ * 'fabric', upstream devices are informed
+ */
+ if (gbp_endpoint_is_local (ge) && ~0 != gg->gg_uplink_sw_if_index)
+ {
+ gbp_endpoint_add_itf (gbp_itf_get_sw_if_index (gef->gef_itf),
+ gei);
+ if (FIB_PROTOCOL_IP4 == pfx->fp_proto)
+ ip4_neighbor_advertise (vlib_get_main (),
+ vnet_get_main (),
+ gg->gg_uplink_sw_if_index,
+ &pfx->fp_addr.ip4);
+ else
+ ip6_neighbor_advertise (vlib_get_main (),
+ vnet_get_main (),
+ gg->gg_uplink_sw_if_index,
+ &pfx->fp_addr.ip6);
+ }
+ }
+ }
+
+ if (gbp_endpoint_is_external (ge))
+ {
+ gbp_itf_l2_set_input_feature (gef->gef_itf,
+ L2INPUT_FEAT_GBP_LPM_CLASSIFY);
+ }
+ else if (gbp_endpoint_is_local (ge))
+ {
+ /*
+ * non-remote endpoints (i.e. those not arriving on iVXLAN
+ * tunnels) need to be classifed based on the the input interface.
+ * We enable the GBP-FWD feature only if the group has an uplink
+ * interface (on which the GBP-FWD feature would send UU traffic).
+ * External endpoints get classified based on an LPM match
+ */
+ l2input_feat_masks_t feats = L2INPUT_FEAT_GBP_SRC_CLASSIFY;
+
+ if (NULL != gg && ~0 != gg->gg_uplink_sw_if_index)
+ feats |= L2INPUT_FEAT_GBP_FWD;
+ gbp_itf_l2_set_input_feature (gef->gef_itf, feats);
+ }
+
+ /*
+ * update children with the new forwarding info
+ */
+ fib_node_back_walk_ctx_t bw_ctx = {
+ .fnbw_reason = FIB_NODE_BW_REASON_FLAG_EVALUATE,
+ .fnbw_flags = FIB_NODE_BW_FLAG_FORCE_SYNC,
+ };
+
+ fib_walk_sync (gbp_endpoint_fib_type, gei, &bw_ctx);
+}
+
+int
+gbp_endpoint_update_and_lock (gbp_endpoint_src_t src,
+ u32 sw_if_index,
+ const ip46_address_t * ips,
+ const mac_address_t * mac,
+ index_t gbdi, index_t grdi,
+ sclass_t sclass,
+ gbp_endpoint_flags_t flags,
+ const ip46_address_t * tun_src,
+ const ip46_address_t * tun_dst, u32 * handle)
+{
+ gbp_bridge_domain_t *gbd;
+ gbp_endpoint_group_t *gg;
+ gbp_endpoint_src_t best;
+ gbp_route_domain_t *grd;
+ gbp_endpoint_loc_t *gel;
+ gbp_endpoint_t *ge;
+ index_t ggi, gei;
+ int rv;
+
+ if (~0 == sw_if_index)
+ return (VNET_API_ERROR_INVALID_SW_IF_INDEX);
+
+ ge = NULL;
+ gg = NULL;
+
+ /*
+ * we need to determine the bridge-domain, either from the EPG or
+ * the BD passed
+ */
+ if (SCLASS_INVALID != sclass)
+ {
+ ggi = gbp_endpoint_group_find (sclass);
+
+ if (INDEX_INVALID == ggi)
+ return (VNET_API_ERROR_NO_SUCH_ENTRY);
+
+ gg = gbp_endpoint_group_get (ggi);
+ gbdi = gg->gg_gbd;
+ grdi = gg->gg_rd;
+ }
+ else
+ {
+ if (INDEX_INVALID == gbdi)
+ return (VNET_API_ERROR_NO_SUCH_ENTRY);
+ if (INDEX_INVALID == grdi)
+ return (VNET_API_ERROR_NO_SUCH_FIB);
+ ggi = INDEX_INVALID;
+ }
+
+ gbd = gbp_bridge_domain_get (gbdi);
+ grd = gbp_route_domain_get (grdi);
+ rv = gbp_endpoint_find_for_update (ips, grd, mac, gbd, &ge);
+
+ if (0 != rv)
+ return (rv);
+
+ if (NULL == ge)
+ {
+ ge = gbp_endpoint_alloc (ips, grd, mac, gbd);
+ }
+ else
+ {
+ gbp_endpoint_ips_update (ge, ips, grd);
+ }
+
+ best = gbp_endpoint_get_best_src (ge);
+ gei = gbp_endpoint_index (ge);
+ gel = gbp_endpoint_loc_find_or_add (ge, src);
+
+ gbp_endpoint_loc_update (ge, gel, gbd, sw_if_index, ggi, flags,
+ tun_src, tun_dst);
+
+ if (src <= best)
+ {
+ /*
+ * either the best source has been updated or we have a new best source
+ */
+ gbb_endpoint_fwd_reset (ge);
+ gbb_endpoint_fwd_recalc (ge);
+ }
+ else
+ {
+ /*
+ * an update to a lower priority source, so we need do nothing
+ */
+ }
+
+ if (handle)
+ *handle = gei;
+
+ GBP_ENDPOINT_INFO ("update: %U", format_gbp_endpoint, gei);
+
+ return (0);
+}
+
+void
+gbp_endpoint_unlock (gbp_endpoint_src_t src, index_t gei)
+{
+ gbp_endpoint_loc_t *gel, gel_copy;
+ gbp_endpoint_src_t best;
+ gbp_endpoint_t *ge;
+ int removed;
+
+ if (pool_is_free_index (gbp_endpoint_pool, gei))
+ return;
+
+ GBP_ENDPOINT_INFO ("delete: %U", format_gbp_endpoint, gei);
+
+ ge = gbp_endpoint_get (gei);
+
+ gel = gbp_endpoint_loc_find (ge, src);
+
+ if (NULL == gel)
+ return;
+
+ /*
+ * lock the EP so we can control when it is deleted
+ */
+ fib_node_lock (&ge->ge_node);
+ best = gbp_endpoint_get_best_src (ge);
+
+ /*
+ * copy the location info since we'll lose it when it's removed from
+ * the vector
+ */
+ clib_memcpy (&gel_copy, gel, sizeof (gel_copy));
+
+ /*
+ * remove the source we no longer need
+ */
+ removed = gbp_endpoint_loc_unlock (ge, gel);
+
+ if (src == best)
+ {
+ /*
+ * we have removed the old best source => recalculate fwding
+ */
+ if (0 == vec_len (ge->ge_locs))
+ {
+ /*
+ * if there are no more sources left, then we need only release
+ * the fwding resources held and then this EP is gawn.
+ */
+ gbb_endpoint_fwd_reset (ge);
+ }
+ else
+ {
+ /*
+ * else there are more sources. release the old and get new
+ * fwding objects
+ */
+ gbb_endpoint_fwd_reset (ge);
+ gbb_endpoint_fwd_recalc (ge);
+ }
+ }
+ /*
+ * else
+ * we removed a lower priority source so we need to do nothing
+ */
+
+ /*
+ * clear up any resources held by the source
+ */
+ if (removed)
+ gbp_endpoint_loc_destroy (&gel_copy);
+
+ /*
+ * remove the lock taken above
+ */
+ fib_node_unlock (&ge->ge_node);
+ /*
+ * We may have removed the last source and so this EP is now TOAST
+ * DO NOTHING BELOW HERE
+ */
+}
+
+u32
+gbp_endpoint_child_add (index_t gei,
+ fib_node_type_t type, fib_node_index_t index)
+{
+ return (fib_node_child_add (gbp_endpoint_fib_type, gei, type, index));
+}
+
+void
+gbp_endpoint_child_remove (index_t gei, u32 sibling)
+{
+ return (fib_node_child_remove (gbp_endpoint_fib_type, gei, sibling));
+}
+
+typedef struct gbp_endpoint_flush_ctx_t_
+{
+ u32 sw_if_index;
+ gbp_endpoint_src_t src;
+ index_t *geis;
+} gbp_endpoint_flush_ctx_t;
+
+static walk_rc_t
+gbp_endpoint_flush_cb (index_t gei, void *args)
+{
+ gbp_endpoint_flush_ctx_t *ctx = args;
+ gbp_endpoint_loc_t *gel;
+ gbp_endpoint_t *ge;
+
+ ge = gbp_endpoint_get (gei);
+ gel = gbp_endpoint_loc_find (ge, ctx->src);
+
+ if ((NULL != gel) && ctx->sw_if_index == gel->tun.gel_parent_sw_if_index)
+ {
+ vec_add1 (ctx->geis, gei);
+ }
+
+ return (WALK_CONTINUE);
+}
+
+/**
+ * remove all learnt endpoints using the interface
+ */
+void
+gbp_endpoint_flush (gbp_endpoint_src_t src, u32 sw_if_index)
+{
+ gbp_endpoint_flush_ctx_t ctx = {
+ .sw_if_index = sw_if_index,
+ .src = src,
+ };
+ index_t *gei;
+
+ GBP_ENDPOINT_INFO ("flush: %U %U",
+ format_gbp_endpoint_src, src,
+ format_vnet_sw_if_index_name, vnet_get_main (),
+ sw_if_index);
+ gbp_endpoint_walk (gbp_endpoint_flush_cb, &ctx);
+
+ vec_foreach (gei, ctx.geis)
+ {
+ gbp_endpoint_unlock (src, *gei);
+ }
+
+ vec_free (ctx.geis);
+}
+
+void
+gbp_endpoint_walk (gbp_endpoint_cb_t cb, void *ctx)
+{
+ u32 index;
+
+ /* *INDENT-OFF* */
+ pool_foreach_index (index, gbp_endpoint_pool)
+ {
+ if (!cb(index, ctx))
+ break;
+ }
+ /* *INDENT-ON* */
+}
+
+static clib_error_t *
+gbp_endpoint_cli (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ ip46_address_t ip = ip46_address_initializer, *ips = NULL;
+ mac_address_t mac = ZERO_MAC_ADDRESS;
+ vnet_main_t *vnm = vnet_get_main ();
+ u32 sclass = SCLASS_INVALID;
+ u32 handle = INDEX_INVALID;
+ u32 sw_if_index = ~0;
+ u32 flags = GBP_ENDPOINT_FLAG_NONE;
+ u8 add = 1;
+ int rv;
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ ip46_address_reset (&ip);
+
+ if (unformat (input, "%U", unformat_vnet_sw_interface,
+ vnm, &sw_if_index))
+ ;
+ else if (unformat (input, "add"))
+ add = 1;
+ else if (unformat (input, "del"))
+ add = 0;
+ else if (unformat (input, "sclass %d", &sclass))
+ ;
+ else if (unformat (input, "handle %d", &handle))
+ ;
+ else if (unformat (input, "ip %U", unformat_ip4_address, &ip.ip4))
+ vec_add1 (ips, ip);
+ else if (unformat (input, "ip %U", unformat_ip6_address, &ip.ip6))
+ vec_add1 (ips, ip);
+ else if (unformat (input, "mac %U", unformat_mac_address, &mac))
+ ;
+ else if (unformat (input, "flags 0x%x", &flags))
+ ;
+ else
+ break;
+ }
+
+ if (add)
+ {
+ if (~0 == sw_if_index)
+ return clib_error_return (0, "interface must be specified");
+ if (SCLASS_INVALID == sclass)
+ return clib_error_return (0, "SCLASS must be specified");
+
+ rv =
+ gbp_endpoint_update_and_lock (GBP_ENDPOINT_SRC_CP,
+ sw_if_index, ips, &mac,
+ INDEX_INVALID, INDEX_INVALID,
+ sclass, flags, NULL, NULL, &handle);
+
+ if (rv)
+ return clib_error_return (0, "GBP Endpoint update returned %d", rv);
+ else
+ vlib_cli_output (vm, "handle %d\n", handle);
+ }
+ else
+ {
+ if (INDEX_INVALID == handle)
+ return clib_error_return (0, "handle must be specified");
+
+ gbp_endpoint_unlock (GBP_ENDPOINT_SRC_CP, handle);
+ }
+
+ vec_free (ips);
+
+ return (NULL);
+}
+
+/*?
+ * Configure a GBP Endpoint
+ *
+ * @cliexpar
+ * @cliexstart{gbp endpoint del <handle> | [add] <interface> sclass <SCLASS> ip <IP> mac <MAC> [flags <flags>]}
+ * @cliexend
+ ?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (gbp_endpoint_cli_node, static) = {
+ .path = "gbp endpoint",
+ .short_help = "gbp endpoint del <handle> | [add] <interface> sclass <SCLASS> ip <IP> mac <MAC> [flags <flags>]",
+ .function = gbp_endpoint_cli,
+};
+/* *INDENT-ON* */
+
+u8 *
+format_gbp_endpoint_src (u8 * s, va_list * args)
+{
+ gbp_endpoint_src_t action = va_arg (*args, gbp_endpoint_src_t);
+
+ switch (action)
+ {
+#define _(v,a) case GBP_ENDPOINT_SRC_##v: return (format (s, "%s", a));
+ foreach_gbp_endpoint_src
+#undef _
+ }
+
+ return (format (s, "unknown"));
+}
+
+static u8 *
+format_gbp_endpoint_fwd (u8 * s, va_list * args)
+{
+ gbp_endpoint_fwd_t *gef = va_arg (*args, gbp_endpoint_fwd_t *);
+
+ s = format (s, "fwd:");
+ s = format (s, "\n itf:[%U]", format_gbp_itf_hdl, gef->gef_itf);
+ if (GBP_ENDPOINT_FLAG_NONE != gef->gef_flags)
+ {
+ s = format (s, " flags:%U", format_gbp_endpoint_flags, gef->gef_flags);
+ }
+
+ return (s);
+}
+
+static u8 *
+format_gbp_endpoint_key (u8 * s, va_list * args)
+{
+ gbp_endpoint_key_t *gek = va_arg (*args, gbp_endpoint_key_t *);
+ const fib_prefix_t *pfx;
+
+ s = format (s, "ips:[");
+
+ vec_foreach (pfx, gek->gek_ips)
+ {
+ s = format (s, "%U, ", format_fib_prefix, pfx);
+ }
+ s = format (s, "]");
+
+ s = format (s, " mac:%U", format_mac_address_t, &gek->gek_mac);
+
+ return (s);
+}
+
+static u8 *
+format_gbp_endpoint_loc (u8 * s, va_list * args)
+{
+ gbp_endpoint_loc_t *gel = va_arg (*args, gbp_endpoint_loc_t *);
+
+ s = format (s, "%U", format_gbp_endpoint_src, gel->gel_src);
+ s = format (s, "\n EPG:%d [%U]", gel->gel_epg,
+ format_gbp_itf_hdl, gel->gel_itf);
+
+ if (GBP_ENDPOINT_FLAG_NONE != gel->gel_flags)
+ {
+ s = format (s, " flags:%U", format_gbp_endpoint_flags, gel->gel_flags);
+ }
+ if (GBP_ENDPOINT_FLAG_REMOTE & gel->gel_flags)
+ {
+ s = format (s, " tun:[");
+ s = format (s, "parent:%U", format_vnet_sw_if_index_name,
+ vnet_get_main (), gel->tun.gel_parent_sw_if_index);
+ s = format (s, " {%U,%U}]",
+ format_ip46_address, &gel->tun.gel_src, IP46_TYPE_ANY,
+ format_ip46_address, &gel->tun.gel_dst, IP46_TYPE_ANY);
+ }
+
+ return (s);
+}
+
+u8 *
+format_gbp_endpoint (u8 * s, va_list * args)
+{
+ index_t gei = va_arg (*args, index_t);
+ gbp_endpoint_loc_t *gel;
+ gbp_endpoint_t *ge;
+
+ ge = gbp_endpoint_get (gei);
+
+ s = format (s, "[@%d] %U", gei, format_gbp_endpoint_key, &ge->ge_key);
+ s = format (s, " last-time:[%f]", ge->ge_last_time);
+
+ vec_foreach (gel, ge->ge_locs)
+ {
+ s = format (s, "\n %U", format_gbp_endpoint_loc, gel);
+ }
+ s = format (s, "\n %U", format_gbp_endpoint_fwd, &ge->ge_fwd);
+
+ return s;
+}
+
+static walk_rc_t
+gbp_endpoint_show_one (index_t gei, void *ctx)
+{
+ vlib_main_t *vm;
+
+ vm = ctx;
+ vlib_cli_output (vm, " %U", format_gbp_endpoint, gei);
+
+ return (WALK_CONTINUE);
+}
+
+static int
+gbp_endpoint_walk_ip_itf (clib_bihash_kv_24_8_t * kvp, void *arg)
+{
+ ip46_address_t ip;
+ vlib_main_t *vm;
+ u32 sw_if_index;
+
+ vm = arg;
+
+ gbp_endpoint_extract_key_ip_itf (kvp, &ip, &sw_if_index);
+
+ vlib_cli_output (vm, " {%U, %U} -> %d",
+ format_ip46_address, &ip, IP46_TYPE_ANY,
+ format_vnet_sw_if_index_name, vnet_get_main (),
+ sw_if_index, kvp->value);
+ return (BIHASH_WALK_CONTINUE);
+}
+
+static int
+gbp_endpoint_walk_mac_itf (clib_bihash_kv_16_8_t * kvp, void *arg)
+{
+ mac_address_t mac;
+ vlib_main_t *vm;
+ u32 sw_if_index;
+
+ vm = arg;
+
+ gbp_endpoint_extract_key_mac_itf (kvp, &mac, &sw_if_index);
+
+ vlib_cli_output (vm, " {%U, %U} -> %d",
+ format_mac_address_t, &mac,
+ format_vnet_sw_if_index_name, vnet_get_main (),
+ sw_if_index, kvp->value);
+ return (BIHASH_WALK_CONTINUE);
+}
+
+static clib_error_t *
+gbp_endpoint_show (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ u32 show_dbs, handle;
+
+ handle = INDEX_INVALID;
+ show_dbs = 0;
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "%d", &handle))
+ ;
+ else if (unformat (input, "db"))
+ show_dbs = 1;
+ else
+ break;
+ }
+
+ if (INDEX_INVALID != handle)
+ {
+ vlib_cli_output (vm, "%U", format_gbp_endpoint, handle);
+ }
+ else if (show_dbs)
+ {
+ vlib_cli_output (vm, "\nDatabases:");
+ clib_bihash_foreach_key_value_pair_24_8 (&gbp_ep_db.ged_by_ip_rd,
+ gbp_endpoint_walk_ip_itf, vm);
+ clib_bihash_foreach_key_value_pair_16_8
+ (&gbp_ep_db.ged_by_mac_bd, gbp_endpoint_walk_mac_itf, vm);
+ }
+ else
+ {
+ vlib_cli_output (vm, "Endpoints:");
+ gbp_endpoint_walk (gbp_endpoint_show_one, vm);
+ }
+
+ return (NULL);
+}
+
+/*?
+ * Show Group Based Policy Endpoints and derived information
+ *
+ * @cliexpar
+ * @cliexstart{show gbp endpoint}
+ * @cliexend
+ ?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (gbp_endpoint_show_node, static) = {
+ .path = "show gbp endpoint",
+ .short_help = "show gbp endpoint\n",
+ .function = gbp_endpoint_show,
+};
+/* *INDENT-ON* */
+
+static void
+gbp_endpoint_check (index_t gei, f64 start_time)
+{
+ gbp_endpoint_group_t *gg;
+ gbp_endpoint_loc_t *gel;
+ gbp_endpoint_t *ge;
+
+ ge = gbp_endpoint_get (gei);
+ gel = gbp_endpoint_loc_find (ge, GBP_ENDPOINT_SRC_DP);
+
+ if (NULL != gel)
+ {
+ gg = gbp_endpoint_group_get (gel->gel_epg);
+
+ if ((start_time - ge->ge_last_time) >
+ gg->gg_retention.remote_ep_timeout)
+ {
+ gbp_endpoint_unlock (GBP_ENDPOINT_SRC_DP, gei);
+ }
+ }
+}
+
+static void
+gbp_endpoint_scan_l2 (vlib_main_t * vm)
+{
+ clib_bihash_16_8_t *gte_table = &gbp_ep_db.ged_by_mac_bd;
+ f64 last_start, start_time, delta_t;
+ int i, j, k;
+
+ if (!gte_table->instantiated)
+ return;
+
+ delta_t = 0;
+ last_start = start_time = vlib_time_now (vm);
+
+ for (i = 0; i < gte_table->nbuckets; i++)
+ {
+ clib_bihash_bucket_16_8_t *b;
+ clib_bihash_value_16_8_t *v;
+
+ /* allow no more than 20us without a pause */
+ delta_t = vlib_time_now (vm) - last_start;
+ if (delta_t > 20e-6)
+ {
+ /* suspend for 100 us */
+ vlib_process_suspend (vm, 100e-6);
+ last_start = vlib_time_now (vm);
+ }
+
+ b = clib_bihash_get_bucket_16_8 (gte_table, i);
+ if (clib_bihash_bucket_is_empty_16_8 (b))
+ continue;
+ v = clib_bihash_get_value_16_8 (gte_table, b->offset);
+
+ for (j = 0; j < (1 << b->log2_pages); j++)
+ {
+ for (k = 0; k < BIHASH_KVP_PER_PAGE; k++)
+ {
+ if (clib_bihash_is_free_16_8 (&v->kvp[k]))
+ continue;
+
+ gbp_endpoint_check (v->kvp[k].value, start_time);
+
+ /*
+ * Note: we may have just freed the bucket's backing
+ * storage, so check right here...
+ */
+ if (clib_bihash_bucket_is_empty_16_8 (b))
+ goto doublebreak;
+ }
+ v++;
+ }
+ doublebreak:
+ ;
+ }
+}
+
+static void
+gbp_endpoint_scan_l3 (vlib_main_t * vm)
+{
+ clib_bihash_24_8_t *gte_table = &gbp_ep_db.ged_by_ip_rd;
+ f64 last_start, start_time, delta_t;
+ int i, j, k;
+
+ if (!gte_table->instantiated)
+ return;
+
+ delta_t = 0;
+ last_start = start_time = vlib_time_now (vm);
+
+ for (i = 0; i < gte_table->nbuckets; i++)
+ {
+ clib_bihash_bucket_24_8_t *b;
+ clib_bihash_value_24_8_t *v;
+
+ /* allow no more than 20us without a pause */
+ delta_t = vlib_time_now (vm) - last_start;
+ if (delta_t > 20e-6)
+ {
+ /* suspend for 100 us */
+ vlib_process_suspend (vm, 100e-6);
+ last_start = vlib_time_now (vm);
+ }
+
+ b = clib_bihash_get_bucket_24_8 (gte_table, i);
+ if (clib_bihash_bucket_is_empty_24_8 (b))
+ continue;
+ v = clib_bihash_get_value_24_8 (gte_table, b->offset);
+
+ for (j = 0; j < (1 << b->log2_pages); j++)
+ {
+ for (k = 0; k < BIHASH_KVP_PER_PAGE; k++)
+ {
+ if (clib_bihash_is_free_24_8 (&v->kvp[k]))
+ continue;
+
+ gbp_endpoint_check (v->kvp[k].value, start_time);
+
+ /*
+ * Note: we may have just freed the bucket's backing
+ * storage, so check right here...
+ */
+ if (clib_bihash_bucket_is_empty_24_8 (b))
+ goto doublebreak;
+ }
+ v++;
+ }
+ doublebreak:
+ ;
+ }
+}
+
+void
+gbp_endpoint_scan (vlib_main_t * vm)
+{
+ gbp_endpoint_scan_l2 (vm);
+ gbp_endpoint_scan_l3 (vm);
+}
+
+static fib_node_t *
+gbp_endpoint_get_node (fib_node_index_t index)
+{
+ gbp_endpoint_t *ge;
+
+ ge = gbp_endpoint_get (index);
+
+ return (&ge->ge_node);
+}
+
+static gbp_endpoint_t *
+gbp_endpoint_from_fib_node (fib_node_t * node)
+{
+ ASSERT (gbp_endpoint_fib_type == node->fn_type);
+ return ((gbp_endpoint_t *) node);
+}
+
+static void
+gbp_endpoint_last_lock_gone (fib_node_t * node)
+{
+ const gbp_bridge_domain_t *gbd;
+ const gbp_route_domain_t *grd;
+ const fib_prefix_t *pfx;
+ gbp_endpoint_t *ge;
+
+ ge = gbp_endpoint_from_fib_node (node);
+
+ ASSERT (0 == vec_len (ge->ge_locs));
+
+ gbd = gbp_bridge_domain_get (ge->ge_key.gek_gbd);
+
+ /*
+ * we have removed the last source. this EP is toast
+ */
+ if (INDEX_INVALID != ge->ge_key.gek_gbd)
+ {
+ gbp_endpoint_del_mac (&ge->ge_key.gek_mac, gbd->gb_bd_index);
+ }
+ vec_foreach (pfx, ge->ge_key.gek_ips)
+ {
+ grd = gbp_route_domain_get (ge->ge_key.gek_grd);
+ gbp_endpoint_del_ip (&pfx->fp_addr, grd->grd_fib_index[pfx->fp_proto]);
+ }
+ pool_put (gbp_endpoint_pool, ge);
+}
+
+static fib_node_back_walk_rc_t
+gbp_endpoint_back_walk_notify (fib_node_t * node,
+ fib_node_back_walk_ctx_t * ctx)
+{
+ ASSERT (0);
+
+ return (FIB_NODE_BACK_WALK_CONTINUE);
+}
+
+/*
+ * The FIB path's graph node virtual function table
+ */
+static const fib_node_vft_t gbp_endpoint_vft = {
+ .fnv_get = gbp_endpoint_get_node,
+ .fnv_last_lock = gbp_endpoint_last_lock_gone,
+ .fnv_back_walk = gbp_endpoint_back_walk_notify,
+ // .fnv_mem_show = fib_path_memory_show,
+};
+
+static clib_error_t *
+gbp_endpoint_init (vlib_main_t * vm)
+{
+#define GBP_EP_HASH_NUM_BUCKETS (2 * 1024)
+#define GBP_EP_HASH_MEMORY_SIZE (1 << 20)
+
+ clib_bihash_init_24_8 (&gbp_ep_db.ged_by_ip_rd,
+ "GBP Endpoints - IP/RD",
+ GBP_EP_HASH_NUM_BUCKETS, GBP_EP_HASH_MEMORY_SIZE);
+
+ clib_bihash_init_16_8 (&gbp_ep_db.ged_by_mac_bd,
+ "GBP Endpoints - MAC/BD",
+ GBP_EP_HASH_NUM_BUCKETS, GBP_EP_HASH_MEMORY_SIZE);
+
+ gbp_ep_logger = vlib_log_register_class ("gbp", "ep");
+ gbp_endpoint_fib_type = fib_node_register_new_type (&gbp_endpoint_vft);
+ gbp_fib_source_hi = fib_source_allocate ("gbp-endpoint-hi",
+ FIB_SOURCE_PRIORITY_HI,
+ FIB_SOURCE_BH_SIMPLE);
+ gbp_fib_source_low = fib_source_allocate ("gbp-endpoint-low",
+ FIB_SOURCE_PRIORITY_LOW,
+ FIB_SOURCE_BH_SIMPLE);
+
+ return (NULL);
+}
+
+VLIB_INIT_FUNCTION (gbp_endpoint_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff