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-rw-r--r--src/plugins/lisp/lisp-cp/control.c5031
1 files changed, 5031 insertions, 0 deletions
diff --git a/src/plugins/lisp/lisp-cp/control.c b/src/plugins/lisp/lisp-cp/control.c
new file mode 100644
index 00000000000..6eee74ac7d0
--- /dev/null
+++ b/src/plugins/lisp/lisp-cp/control.c
@@ -0,0 +1,5031 @@
+/*
+ * Copyright (c) 2016 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 <vlibmemory/api.h>
+#include <lisp/lisp-cp/control.h>
+#include <lisp/lisp-cp/packets.h>
+#include <lisp/lisp-cp/lisp_msg_serdes.h>
+#include <lisp/lisp-gpe/lisp_gpe_fwd_entry.h>
+#include <lisp/lisp-gpe/lisp_gpe_tenant.h>
+#include <lisp/lisp-gpe/lisp_gpe_tunnel.h>
+#include <vnet/fib/fib_entry.h>
+#include <vnet/fib/fib_table.h>
+#include <vnet/ethernet/arp_packet.h>
+#include <vnet/ethernet/packet.h>
+
+#include <openssl/evp.h>
+#include <vnet/crypto/crypto.h>
+
+#define MAX_VALUE_U24 0xffffff
+
+/* mapping timer control constants (in seconds) */
+#define TIME_UNTIL_REFETCH_OR_DELETE 20
+#define MAPPING_TIMEOUT (((m->ttl) * 60) - TIME_UNTIL_REFETCH_OR_DELETE)
+
+u8 *format_lisp_cp_input_trace (u8 * s, va_list * args);
+static void *send_map_request_thread_fn (void *arg);
+
+typedef enum
+{
+ LISP_CP_INPUT_NEXT_DROP,
+ LISP_CP_INPUT_N_NEXT,
+} lisp_cp_input_next_t;
+
+typedef struct
+{
+ u8 is_resend;
+ gid_address_t seid;
+ gid_address_t deid;
+ u8 smr_invoked;
+} map_request_args_t;
+
+u8
+vnet_lisp_get_map_request_mode (void)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ return lcm->map_request_mode;
+}
+
+static u16
+auth_data_len_by_key_id (lisp_key_type_t key_id)
+{
+ switch (key_id)
+ {
+ case HMAC_SHA_1_96:
+ return SHA1_AUTH_DATA_LEN;
+ case HMAC_SHA_256_128:
+ return SHA256_AUTH_DATA_LEN;
+ default:
+ clib_warning ("unsupported key type: %d!", key_id);
+ return (u16) ~ 0;
+ }
+ return (u16) ~ 0;
+}
+
+static int
+queue_map_request (gid_address_t * seid, gid_address_t * deid,
+ u8 smr_invoked, u8 is_resend);
+
+ip_interface_address_t *
+ip_interface_get_first_interface_address (ip_lookup_main_t * lm,
+ u32 sw_if_index, u8 loop)
+{
+ vnet_main_t *vnm = vnet_get_main ();
+ vnet_sw_interface_t *swif = vnet_get_sw_interface (vnm, sw_if_index);
+ if (loop && swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
+ sw_if_index = swif->unnumbered_sw_if_index;
+ u32 ia =
+ (vec_len ((lm)->if_address_pool_index_by_sw_if_index) > (sw_if_index)) ?
+ vec_elt ((lm)->if_address_pool_index_by_sw_if_index, (sw_if_index)) :
+ (u32) ~ 0;
+ return pool_elt_at_index ((lm)->if_address_pool, ia);
+}
+
+void *
+ip_interface_get_first_address (ip_lookup_main_t * lm, u32 sw_if_index,
+ u8 version)
+{
+ ip_interface_address_t *ia;
+
+ ia = ip_interface_get_first_interface_address (lm, sw_if_index, 1);
+ if (!ia)
+ return 0;
+ return ip_interface_address_get_address (lm, ia);
+}
+
+int
+ip_interface_get_first_ip_address (lisp_cp_main_t * lcm, u32 sw_if_index,
+ u8 version, ip_address_t * result)
+{
+ ip_lookup_main_t *lm;
+ void *addr;
+
+ lm = (version == AF_IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
+ addr = ip_interface_get_first_address (lm, sw_if_index, version);
+ if (!addr)
+ return 0;
+
+ ip_address_set (result, addr, version);
+ return 1;
+}
+
+/**
+ * Find the sw_if_index of the interface that would be used to egress towards
+ * dst.
+ */
+u32
+ip_fib_get_egress_iface_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst)
+{
+ fib_node_index_t fei;
+ fib_prefix_t prefix;
+
+ ip_address_to_fib_prefix (dst, &prefix);
+
+ fei = fib_table_lookup (0, &prefix);
+
+ return (fib_entry_get_resolving_interface (fei));
+}
+
+/**
+ * Find first IP of the interface that would be used to egress towards dst.
+ * Returns 1 if the address is found 0 otherwise.
+ */
+int
+ip_fib_get_first_egress_ip_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst,
+ ip_address_t * result)
+{
+ u32 si;
+ ip_lookup_main_t *lm;
+ void *addr = 0;
+ u8 ipver;
+
+ ASSERT (result != 0);
+
+ ipver = ip_addr_version (dst);
+
+ lm = (ipver == AF_IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
+ si = ip_fib_get_egress_iface_for_dst (lcm, dst);
+
+ if ((u32) ~ 0 == si)
+ return 0;
+
+ /* find the first ip address */
+ addr = ip_interface_get_first_address (lm, si, ipver);
+ if (0 == addr)
+ return 0;
+
+ ip_address_set (result, addr, ipver);
+ return 1;
+}
+
+static int
+dp_add_del_iface (lisp_cp_main_t * lcm, u32 vni, u8 is_l2, u8 is_add,
+ u8 with_default_route)
+{
+ uword *dp_table;
+
+ if (!is_l2)
+ {
+ dp_table = hash_get (lcm->table_id_by_vni, vni);
+
+ if (!dp_table)
+ {
+ clib_warning ("vni %d not associated to a vrf!", vni);
+ return VNET_API_ERROR_INVALID_VALUE;
+ }
+ }
+ else
+ {
+ dp_table = hash_get (lcm->bd_id_by_vni, vni);
+ if (!dp_table)
+ {
+ clib_warning ("vni %d not associated to a bridge domain!", vni);
+ return VNET_API_ERROR_INVALID_VALUE;
+ }
+ }
+
+ /* enable/disable data-plane interface */
+ if (is_add)
+ {
+ if (is_l2)
+ lisp_gpe_tenant_l2_iface_add_or_lock (vni, dp_table[0]);
+ else
+ lisp_gpe_tenant_l3_iface_add_or_lock (vni, dp_table[0],
+ with_default_route);
+ }
+ else
+ {
+ if (is_l2)
+ lisp_gpe_tenant_l2_iface_unlock (vni);
+ else
+ lisp_gpe_tenant_l3_iface_unlock (vni);
+ }
+
+ return 0;
+}
+
+static void
+dp_del_fwd_entry (lisp_cp_main_t * lcm, u32 dst_map_index)
+{
+ vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
+ fwd_entry_t *fe = 0;
+ uword *feip = 0;
+ clib_memset (a, 0, sizeof (*a));
+
+ feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
+ if (!feip)
+ return;
+
+ fe = pool_elt_at_index (lcm->fwd_entry_pool, feip[0]);
+
+ /* delete dp fwd entry */
+ u32 sw_if_index;
+ a->is_add = 0;
+ a->locator_pairs = fe->locator_pairs;
+ a->vni = gid_address_vni (&fe->reid);
+ gid_address_copy (&a->rmt_eid, &fe->reid);
+ if (fe->is_src_dst)
+ gid_address_copy (&a->lcl_eid, &fe->leid);
+
+ vnet_lisp_gpe_del_fwd_counters (a, feip[0]);
+ vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
+
+ /* delete entry in fwd table */
+ hash_unset (lcm->fwd_entry_by_mapping_index, dst_map_index);
+ vec_free (fe->locator_pairs);
+ pool_put (lcm->fwd_entry_pool, fe);
+}
+
+/**
+ * Finds first remote locator with best (lowest) priority that has a local
+ * peer locator with an underlying route to it.
+ *
+ */
+static u32
+get_locator_pairs (lisp_cp_main_t * lcm, mapping_t * lcl_map,
+ mapping_t * rmt_map, locator_pair_t ** locator_pairs)
+{
+ u32 i, limitp = 0, li, found = 0, esi;
+ locator_set_t *rmt_ls, *lcl_ls;
+ ip_address_t _lcl_addr, *lcl_addr = &_lcl_addr;
+ locator_t *lp, *rmt = 0;
+ uword *checked = 0;
+ locator_pair_t pair;
+
+ rmt_ls =
+ pool_elt_at_index (lcm->locator_set_pool, rmt_map->locator_set_index);
+ lcl_ls =
+ pool_elt_at_index (lcm->locator_set_pool, lcl_map->locator_set_index);
+
+ if (!rmt_ls || vec_len (rmt_ls->locator_indices) == 0)
+ return 0;
+
+ while (1)
+ {
+ rmt = 0;
+
+ /* find unvisited remote locator with best priority */
+ for (i = 0; i < vec_len (rmt_ls->locator_indices); i++)
+ {
+ if (0 != hash_get (checked, i))
+ continue;
+
+ li = vec_elt (rmt_ls->locator_indices, i);
+ lp = pool_elt_at_index (lcm->locator_pool, li);
+
+ /* we don't support non-IP locators for now */
+ if (gid_address_type (&lp->address) != GID_ADDR_IP_PREFIX)
+ continue;
+
+ if ((found && lp->priority == limitp)
+ || (!found && lp->priority >= limitp))
+ {
+ rmt = lp;
+
+ /* don't search for locators with lower priority and don't
+ * check this locator again*/
+ limitp = lp->priority;
+ hash_set (checked, i, 1);
+ break;
+ }
+ }
+ /* check if a local locator with a route to remote locator exists */
+ if (rmt != 0)
+ {
+ /* find egress sw_if_index for rmt locator */
+ esi =
+ ip_fib_get_egress_iface_for_dst (lcm,
+ &gid_address_ip (&rmt->address));
+ if ((u32) ~ 0 == esi)
+ continue;
+
+ for (i = 0; i < vec_len (lcl_ls->locator_indices); i++)
+ {
+ li = vec_elt (lcl_ls->locator_indices, i);
+ locator_t *sl = pool_elt_at_index (lcm->locator_pool, li);
+
+ /* found local locator with the needed sw_if_index */
+ if (sl->sw_if_index == esi)
+ {
+ /* and it has an address */
+ if (0 == ip_interface_get_first_ip_address (lcm,
+ sl->sw_if_index,
+ gid_address_ip_version
+ (&rmt->address),
+ lcl_addr))
+ continue;
+
+ clib_memset (&pair, 0, sizeof (pair));
+ ip_address_copy (&pair.rmt_loc,
+ &gid_address_ip (&rmt->address));
+ ip_address_copy (&pair.lcl_loc, lcl_addr);
+ pair.weight = rmt->weight;
+ pair.priority = rmt->priority;
+ vec_add1 (locator_pairs[0], pair);
+ found = 1;
+ }
+ }
+ }
+ else
+ break;
+ }
+
+ hash_free (checked);
+ return found;
+}
+
+static void
+gid_address_sd_to_flat (gid_address_t * dst, gid_address_t * src,
+ fid_address_t * fid)
+{
+ ASSERT (GID_ADDR_SRC_DST == gid_address_type (src));
+
+ dst[0] = src[0];
+
+ switch (fid_addr_type (fid))
+ {
+ case FID_ADDR_IP_PREF:
+ gid_address_type (dst) = GID_ADDR_IP_PREFIX;
+ gid_address_ippref (dst) = fid_addr_ippref (fid);
+ break;
+ case FID_ADDR_MAC:
+ gid_address_type (dst) = GID_ADDR_MAC;
+ mac_copy (gid_address_mac (dst), fid_addr_mac (fid));
+ break;
+ default:
+ clib_warning ("Unsupported fid type %d!", fid_addr_type (fid));
+ break;
+ }
+}
+
+u8
+vnet_lisp_map_register_state_get (void)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ return lcm->map_registering;
+}
+
+u8
+vnet_lisp_rloc_probe_state_get (void)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ return lcm->rloc_probing;
+}
+
+static void
+dp_add_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index)
+{
+ vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
+ gid_address_t *rmt_eid, *lcl_eid;
+ mapping_t *lcl_map, *rmt_map;
+ u32 sw_if_index, **rmts, rmts_idx;
+ uword *feip = 0, *dpid, *rmts_stored_idxp = 0;
+ fwd_entry_t *fe;
+ u8 type, is_src_dst = 0;
+ int rv;
+
+ clib_memset (a, 0, sizeof (*a));
+
+ /* remove entry if it already exists */
+ feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
+ if (feip)
+ dp_del_fwd_entry (lcm, dst_map_index);
+
+ /*
+ * Determine local mapping and eid
+ */
+ if (lcm->flags & LISP_FLAG_PITR_MODE)
+ {
+ if (lcm->pitr_map_index != ~0)
+ lcl_map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
+ else
+ {
+ clib_warning ("no PITR mapping configured!");
+ return;
+ }
+ }
+ else
+ lcl_map = pool_elt_at_index (lcm->mapping_pool, src_map_index);
+ lcl_eid = &lcl_map->eid;
+
+ /*
+ * Determine remote mapping and eid
+ */
+ rmt_map = pool_elt_at_index (lcm->mapping_pool, dst_map_index);
+ rmt_eid = &rmt_map->eid;
+
+ /*
+ * Build and insert data plane forwarding entry
+ */
+ a->is_add = 1;
+
+ if (MR_MODE_SRC_DST == lcm->map_request_mode)
+ {
+ if (GID_ADDR_SRC_DST == gid_address_type (rmt_eid))
+ {
+ gid_address_sd_to_flat (&a->rmt_eid, rmt_eid,
+ &gid_address_sd_dst (rmt_eid));
+ gid_address_sd_to_flat (&a->lcl_eid, rmt_eid,
+ &gid_address_sd_src (rmt_eid));
+ }
+ else
+ {
+ gid_address_copy (&a->rmt_eid, rmt_eid);
+ gid_address_copy (&a->lcl_eid, lcl_eid);
+ }
+ is_src_dst = 1;
+ }
+ else
+ gid_address_copy (&a->rmt_eid, rmt_eid);
+
+ a->vni = gid_address_vni (&a->rmt_eid);
+ a->is_src_dst = is_src_dst;
+
+ /* get vrf or bd_index associated to vni */
+ type = gid_address_type (&a->rmt_eid);
+ if (GID_ADDR_IP_PREFIX == type)
+ {
+ dpid = hash_get (lcm->table_id_by_vni, a->vni);
+ if (!dpid)
+ {
+ clib_warning ("vni %d not associated to a vrf!", a->vni);
+ return;
+ }
+ a->table_id = dpid[0];
+ }
+ else if (GID_ADDR_MAC == type)
+ {
+ dpid = hash_get (lcm->bd_id_by_vni, a->vni);
+ if (!dpid)
+ {
+ clib_warning ("vni %d not associated to a bridge domain !", a->vni);
+ return;
+ }
+ a->bd_id = dpid[0];
+ }
+
+ /* find best locator pair that 1) verifies LISP policy 2) are connected */
+ rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
+
+ /* Either rmt mapping is negative or we can't find underlay path.
+ * Try again with petr if configured */
+ if (rv == 0 && (lcm->flags & LISP_FLAG_USE_PETR))
+ {
+ rmt_map = lisp_get_petr_mapping (lcm);
+ rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
+ }
+
+ /* negative entry */
+ if (rv == 0)
+ {
+ a->is_negative = 1;
+ a->action = rmt_map->action;
+ }
+
+ rv = vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
+ if (rv)
+ {
+ if (a->locator_pairs)
+ vec_free (a->locator_pairs);
+ return;
+ }
+
+ /* add tunnel to fwd entry table */
+ pool_get (lcm->fwd_entry_pool, fe);
+ vnet_lisp_gpe_add_fwd_counters (a, fe - lcm->fwd_entry_pool);
+
+ fe->locator_pairs = a->locator_pairs;
+ gid_address_copy (&fe->reid, &a->rmt_eid);
+
+ if (is_src_dst)
+ gid_address_copy (&fe->leid, &a->lcl_eid);
+ else
+ gid_address_copy (&fe->leid, lcl_eid);
+
+ fe->is_src_dst = is_src_dst;
+ hash_set (lcm->fwd_entry_by_mapping_index, dst_map_index,
+ fe - lcm->fwd_entry_pool);
+
+ /* Add rmt mapping to the vector of adjacent mappings to lcl mapping */
+ rmts_stored_idxp =
+ hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, src_map_index);
+ if (!rmts_stored_idxp)
+ {
+ pool_get (lcm->lcl_to_rmt_adjacencies, rmts);
+ clib_memset (rmts, 0, sizeof (*rmts));
+ rmts_idx = rmts - lcm->lcl_to_rmt_adjacencies;
+ hash_set (lcm->lcl_to_rmt_adjs_by_lcl_idx, src_map_index, rmts_idx);
+ }
+ else
+ {
+ rmts_idx = (u32) (*rmts_stored_idxp);
+ rmts = pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idx);
+ }
+ vec_add1 (rmts[0], dst_map_index);
+}
+
+typedef struct
+{
+ u32 si;
+ u32 di;
+} fwd_entry_mt_arg_t;
+
+static void *
+dp_add_fwd_entry_thread_fn (void *arg)
+{
+ fwd_entry_mt_arg_t *a = arg;
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ dp_add_fwd_entry (lcm, a->si, a->di);
+ return 0;
+}
+
+static int
+dp_add_fwd_entry_from_mt (u32 si, u32 di)
+{
+ fwd_entry_mt_arg_t a;
+
+ clib_memset (&a, 0, sizeof (a));
+ a.si = si;
+ a.di = di;
+
+ vl_api_rpc_call_main_thread (dp_add_fwd_entry_thread_fn,
+ (u8 *) & a, sizeof (a));
+ return 0;
+}
+
+/**
+ * Returns vector of adjacencies.
+ *
+ * The caller must free the vector returned by this function.
+ *
+ * @param vni virtual network identifier
+ * @return vector of adjacencies
+ */
+lisp_adjacency_t *
+vnet_lisp_adjacencies_get_by_vni (u32 vni)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ fwd_entry_t *fwd;
+ lisp_adjacency_t *adjs = 0, adj;
+
+ /* *INDENT-OFF* */
+ pool_foreach(fwd, lcm->fwd_entry_pool,
+ ({
+ if (gid_address_vni (&fwd->reid) != vni)
+ continue;
+
+ gid_address_copy (&adj.reid, &fwd->reid);
+ gid_address_copy (&adj.leid, &fwd->leid);
+ vec_add1 (adjs, adj);
+ }));
+ /* *INDENT-ON* */
+
+ return adjs;
+}
+
+static lisp_msmr_t *
+get_map_server (ip_address_t * a)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ lisp_msmr_t *m;
+
+ vec_foreach (m, lcm->map_servers)
+ {
+ if (!ip_address_cmp (&m->address, a))
+ {
+ return m;
+ }
+ }
+ return 0;
+}
+
+static lisp_msmr_t *
+get_map_resolver (ip_address_t * a)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ lisp_msmr_t *m;
+
+ vec_foreach (m, lcm->map_resolvers)
+ {
+ if (!ip_address_cmp (&m->address, a))
+ {
+ return m;
+ }
+ }
+ return 0;
+}
+
+int
+vnet_lisp_add_del_map_server (ip_address_t * addr, u8 is_add)
+{
+ u32 i;
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ lisp_msmr_t _ms, *ms = &_ms;
+
+ if (vnet_lisp_enable_disable_status () == 0)
+ {
+ clib_warning ("LISP is disabled!");
+ return VNET_API_ERROR_LISP_DISABLED;
+ }
+
+ if (is_add)
+ {
+ if (get_map_server (addr))
+ {
+ clib_warning ("map-server %U already exists!", format_ip_address,
+ addr);
+ return -1;
+ }
+
+ clib_memset (ms, 0, sizeof (*ms));
+ ip_address_copy (&ms->address, addr);
+ vec_add1 (lcm->map_servers, ms[0]);
+
+ if (vec_len (lcm->map_servers) == 1)
+ lcm->do_map_server_election = 1;
+ }
+ else
+ {
+ for (i = 0; i < vec_len (lcm->map_servers); i++)
+ {
+ ms = vec_elt_at_index (lcm->map_servers, i);
+ if (!ip_address_cmp (&ms->address, addr))
+ {
+ if (!ip_address_cmp (&ms->address, &lcm->active_map_server))
+ lcm->do_map_server_election = 1;
+
+ vec_del1 (lcm->map_servers, i);
+ break;
+ }
+ }
+ }
+
+ return 0;
+}
+
+/**
+ * Add/remove mapping to/from map-cache. Overwriting not allowed.
+ */
+int
+vnet_lisp_map_cache_add_del (vnet_lisp_add_del_mapping_args_t * a,
+ u32 * map_index_result)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ u32 mi, *map_indexp, map_index, i;
+ u32 **rmts = 0, *remote_idxp, rmts_itr, remote_idx;
+ uword *rmts_idxp;
+ mapping_t *m, *old_map;
+ u32 **eid_indexes;
+
+ if (gid_address_type (&a->eid) == GID_ADDR_NSH)
+ {
+ if (gid_address_vni (&a->eid) != 0)
+ {
+ clib_warning ("Supported only default VNI for NSH!");
+ return VNET_API_ERROR_INVALID_ARGUMENT;
+ }
+ if (gid_address_nsh_spi (&a->eid) > MAX_VALUE_U24)
+ {
+ clib_warning ("SPI is greater than 24bit!");
+ return VNET_API_ERROR_INVALID_ARGUMENT;
+ }
+ }
+
+ mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid);
+ old_map = mi != ~0 ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
+ if (a->is_add)
+ {
+ /* TODO check if overwriting and take appropriate actions */
+ if (mi != GID_LOOKUP_MISS && !gid_address_cmp (&old_map->eid, &a->eid))
+ {
+ clib_warning ("eid %U found in the eid-table", format_gid_address,
+ &a->eid);
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
+
+ pool_get (lcm->mapping_pool, m);
+ gid_address_copy (&m->eid, &a->eid);
+ m->locator_set_index = a->locator_set_index;
+ m->ttl = a->ttl;
+ m->action = a->action;
+ m->local = a->local;
+ m->is_static = a->is_static;
+ m->key = vec_dup (a->key);
+ m->key_id = a->key_id;
+ m->authoritative = a->authoritative;
+
+ map_index = m - lcm->mapping_pool;
+ gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, map_index,
+ 1);
+
+ if (pool_is_free_index (lcm->locator_set_pool, a->locator_set_index))
+ {
+ clib_warning ("Locator set with index %d doesn't exist",
+ a->locator_set_index);
+ return VNET_API_ERROR_INVALID_VALUE;
+ }
+
+ /* add eid to list of eids supported by locator-set */
+ vec_validate (lcm->locator_set_to_eids, a->locator_set_index);
+ eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
+ a->locator_set_index);
+ vec_add1 (eid_indexes[0], map_index);
+
+ if (a->local)
+ {
+ /* mark as local */
+ vec_add1 (lcm->local_mappings_indexes, map_index);
+ }
+ map_index_result[0] = map_index;
+ }
+ else
+ {
+ if (mi == GID_LOOKUP_MISS)
+ {
+ clib_warning ("eid %U not found in the eid-table",
+ format_gid_address, &a->eid);
+ return VNET_API_ERROR_INVALID_VALUE;
+ }
+
+ /* clear locator-set to eids binding */
+ eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
+ a->locator_set_index);
+ for (i = 0; i < vec_len (eid_indexes[0]); i++)
+ {
+ map_indexp = vec_elt_at_index (eid_indexes[0], i);
+ if (map_indexp[0] == mi)
+ break;
+ }
+ vec_del1 (eid_indexes[0], i);
+
+ /* remove local mark if needed */
+ m = pool_elt_at_index (lcm->mapping_pool, mi);
+ if (m->local)
+ {
+ /* Remove adjacencies associated with the local mapping */
+ rmts_idxp = hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, mi);
+ if (rmts_idxp)
+ {
+ rmts =
+ pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idxp[0]);
+ vec_foreach (remote_idxp, rmts[0])
+ {
+ dp_del_fwd_entry (lcm, remote_idxp[0]);
+ }
+ vec_free (rmts[0]);
+ pool_put (lcm->lcl_to_rmt_adjacencies, rmts);
+ hash_unset (lcm->lcl_to_rmt_adjs_by_lcl_idx, mi);
+ }
+
+ u32 k, *lm_indexp;
+ for (k = 0; k < vec_len (lcm->local_mappings_indexes); k++)
+ {
+ lm_indexp = vec_elt_at_index (lcm->local_mappings_indexes, k);
+ if (lm_indexp[0] == mi)
+ break;
+ }
+ vec_del1 (lcm->local_mappings_indexes, k);
+ }
+ else
+ {
+ /* Remove remote (if present) from the vectors of lcl-to-rmts
+ * TODO: Address this in a more efficient way.
+ */
+ /* *INDENT-OFF* */
+ pool_foreach (rmts, lcm->lcl_to_rmt_adjacencies,
+ ({
+ vec_foreach_index (rmts_itr, rmts[0])
+ {
+ remote_idx = vec_elt (rmts[0], rmts_itr);
+ if (mi == remote_idx)
+ {
+ vec_del1 (rmts[0], rmts_itr);
+ break;
+ }
+ }
+ }));
+ /* *INDENT-ON* */
+ }
+
+ /* remove mapping from dictionary */
+ gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, 0, 0);
+ gid_address_free (&m->eid);
+ pool_put_index (lcm->mapping_pool, mi);
+ }
+
+ return 0;
+}
+
+/**
+ * Add/update/delete mapping to/in/from map-cache.
+ */
+int
+vnet_lisp_add_del_local_mapping (vnet_lisp_add_del_mapping_args_t * a,
+ u32 * map_index_result)
+{
+ uword *dp_table = 0;
+ u32 vni;
+ u8 type;
+
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+
+ if (vnet_lisp_enable_disable_status () == 0)
+ {
+ clib_warning ("LISP is disabled!");
+ return VNET_API_ERROR_LISP_DISABLED;
+ }
+
+ vni = gid_address_vni (&a->eid);
+ type = gid_address_type (&a->eid);
+ if (GID_ADDR_IP_PREFIX == type)
+ dp_table = hash_get (lcm->table_id_by_vni, vni);
+ else if (GID_ADDR_MAC == type)
+ dp_table = hash_get (lcm->bd_id_by_vni, vni);
+
+ if (!dp_table && GID_ADDR_NSH != type)
+ {
+ clib_warning ("vni %d not associated to a %s!", vni,
+ GID_ADDR_IP_PREFIX == type ? "vrf" : "bd");
+ return VNET_API_ERROR_INVALID_VALUE;
+ }
+
+ /* store/remove mapping from map-cache */
+ return vnet_lisp_map_cache_add_del (a, map_index_result);
+}
+
+static int
+add_l2_arp_bd (BVT (clib_bihash_kv) * kvp, void *arg)
+{
+ u32 **ht = arg;
+ u32 version = (u32) kvp->key[0];
+ if (AF_IP6 == version)
+ return (BIHASH_WALK_CONTINUE);
+
+ u32 bd = (u32) (kvp->key[0] >> 32);
+ hash_set (ht[0], bd, 0);
+ return (BIHASH_WALK_CONTINUE);
+}
+
+u32 *
+vnet_lisp_l2_arp_bds_get (void)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ u32 *bds = 0;
+
+ gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
+ add_l2_arp_bd, &bds);
+ return bds;
+}
+
+static int
+add_ndp_bd (BVT (clib_bihash_kv) * kvp, void *arg)
+{
+ u32 **ht = arg;
+ u32 version = (u32) kvp->key[0];
+ if (AF_IP4 == version)
+ return (BIHASH_WALK_CONTINUE);
+
+ u32 bd = (u32) (kvp->key[0] >> 32);
+ hash_set (ht[0], bd, 0);
+ return (BIHASH_WALK_CONTINUE);
+}
+
+u32 *
+vnet_lisp_ndp_bds_get (void)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ u32 *bds = 0;
+
+ gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
+ add_ndp_bd, &bds);
+ return bds;
+}
+
+typedef struct
+{
+ void *vector;
+ u32 bd;
+} lisp_add_l2_arp_ndp_args_t;
+
+static int
+add_l2_arp_entry (BVT (clib_bihash_kv) * kvp, void *arg)
+{
+ lisp_add_l2_arp_ndp_args_t *a = arg;
+ lisp_api_l2_arp_entry_t **vector = a->vector, e;
+
+ u32 version = (u32) kvp->key[0];
+ if (AF_IP6 == version)
+ return (BIHASH_WALK_CONTINUE);
+
+ u32 bd = (u32) (kvp->key[0] >> 32);
+
+ if (bd == a->bd)
+ {
+ mac_copy (e.mac, (void *) &kvp->value);
+ e.ip4 = (u32) kvp->key[1];
+ vec_add1 (vector[0], e);
+ }
+ return (BIHASH_WALK_CONTINUE);
+}
+
+lisp_api_l2_arp_entry_t *
+vnet_lisp_l2_arp_entries_get_by_bd (u32 bd)
+{
+ lisp_api_l2_arp_entry_t *entries = 0;
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ lisp_add_l2_arp_ndp_args_t a;
+
+ a.vector = &entries;
+ a.bd = bd;
+
+ gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
+ add_l2_arp_entry, &a);
+ return entries;
+}
+
+static int
+add_ndp_entry (BVT (clib_bihash_kv) * kvp, void *arg)
+{
+ lisp_add_l2_arp_ndp_args_t *a = arg;
+ lisp_api_ndp_entry_t **vector = a->vector, e;
+
+ u32 version = (u32) kvp->key[0];
+ if (AF_IP4 == version)
+ return (BIHASH_WALK_CONTINUE);
+
+ u32 bd = (u32) (kvp->key[0] >> 32);
+
+ if (bd == a->bd)
+ {
+ mac_copy (e.mac, (void *) &kvp->value);
+ clib_memcpy (e.ip6, &kvp->key[1], 16);
+ vec_add1 (vector[0], e);
+ }
+ return (BIHASH_WALK_CONTINUE);
+}
+
+lisp_api_ndp_entry_t *
+vnet_lisp_ndp_entries_get_by_bd (u32 bd)
+{
+ lisp_api_ndp_entry_t *entries = 0;
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ lisp_add_l2_arp_ndp_args_t a;
+
+ a.vector = &entries;
+ a.bd = bd;
+
+ gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
+ add_ndp_entry, &a);
+ return entries;
+}
+
+int
+vnet_lisp_add_del_l2_arp_ndp_entry (gid_address_t * key, u8 * mac, u8 is_add)
+{
+ if (vnet_lisp_enable_disable_status () == 0)
+ {
+ clib_warning ("LISP is disabled!");
+ return VNET_API_ERROR_LISP_DISABLED;
+ }
+
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ int rc = 0;
+
+ u64 res = gid_dictionary_lookup (&lcm->mapping_index_by_gid, key);
+ if (is_add)
+ {
+ if (res != GID_LOOKUP_MISS_L2)
+ {
+ clib_warning ("Entry %U exists in DB!", format_gid_address, key);
+ return VNET_API_ERROR_ENTRY_ALREADY_EXISTS;
+ }
+ u64 val = mac_to_u64 (mac);
+ gid_dictionary_add_del (&lcm->mapping_index_by_gid, key, val,
+ 1 /* is_add */ );
+ }
+ else
+ {
+ if (res == GID_LOOKUP_MISS_L2)
+ {
+ clib_warning ("ONE entry %U not found - cannot delete!",
+ format_gid_address, key);
+ return -1;
+ }
+ gid_dictionary_add_del (&lcm->mapping_index_by_gid, key, 0,
+ 0 /* is_add */ );
+ }
+
+ return rc;
+}
+
+int
+vnet_lisp_eid_table_map (u32 vni, u32 dp_id, u8 is_l2, u8 is_add)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ uword *dp_idp, *vnip, **dp_table_by_vni, **vni_by_dp_table;
+
+ if (vnet_lisp_enable_disable_status () == 0)
+ {
+ clib_warning ("LISP is disabled!");
+ return VNET_API_ERROR_LISP_DISABLED;
+ }
+
+ dp_table_by_vni = is_l2 ? &lcm->bd_id_by_vni : &lcm->table_id_by_vni;
+ vni_by_dp_table = is_l2 ? &lcm->vni_by_bd_id : &lcm->vni_by_table_id;
+
+ if (!is_l2 && (vni == 0 || dp_id == 0))
+ {
+ clib_warning ("can't add/del default vni-vrf mapping!");
+ return -1;
+ }
+
+ dp_idp = hash_get (dp_table_by_vni[0], vni);
+ vnip = hash_get (vni_by_dp_table[0], dp_id);
+
+ if (is_add)
+ {
+ if (dp_idp || vnip)
+ {
+ clib_warning ("vni %d or vrf %d already used in vrf/vni "
+ "mapping!", vni, dp_id);
+ return -1;
+ }
+ hash_set (dp_table_by_vni[0], vni, dp_id);
+ hash_set (vni_by_dp_table[0], dp_id, vni);
+
+ /* create dp iface */
+ dp_add_del_iface (lcm, vni, is_l2, 1 /* is_add */ ,
+ 1 /* with_default_route */ );
+ }
+ else
+ {
+ if (!dp_idp || !vnip)
+ {
+ clib_warning ("vni %d or vrf %d not used in any vrf/vni! "
+ "mapping!", vni, dp_id);
+ return -1;
+ }
+ /* remove dp iface */
+ dp_add_del_iface (lcm, vni, is_l2, 0 /* is_add */ , 0 /* unused */ );
+
+ hash_unset (dp_table_by_vni[0], vni);
+ hash_unset (vni_by_dp_table[0], dp_id);
+ }
+ return 0;
+
+}
+
+/* return 0 if the two locator sets are identical 1 otherwise */
+static u8
+compare_locators (lisp_cp_main_t * lcm, u32 * old_ls_indexes,
+ locator_t * new_locators)
+{
+ u32 i, old_li;
+ locator_t *old_loc, *new_loc;
+
+ if (vec_len (old_ls_indexes) != vec_len (new_locators))
+ return 1;
+
+ for (i = 0; i < vec_len (new_locators); i++)
+ {
+ old_li = vec_elt (old_ls_indexes, i);
+ old_loc = pool_elt_at_index (lcm->locator_pool, old_li);
+
+ new_loc = vec_elt_at_index (new_locators, i);
+
+ if (locator_cmp (old_loc, new_loc))
+ return 1;
+ }
+ return 0;
+}
+
+typedef struct
+{
+ u8 is_negative;
+ void *lcm;
+ gid_address_t *eids_to_be_deleted;
+} remove_mapping_args_t;
+
+/**
+ * Callback invoked when a sub-prefix is found
+ */
+static void
+remove_mapping_if_needed (u32 mi, void *arg)
+{
+ u8 delete = 0;
+ remove_mapping_args_t *a = arg;
+ lisp_cp_main_t *lcm = a->lcm;
+ mapping_t *m;
+ locator_set_t *ls;
+
+ m = pool_elt_at_index (lcm->mapping_pool, mi);
+ if (!m)
+ return;
+
+ ls = pool_elt_at_index (lcm->locator_set_pool, m->locator_set_index);
+
+ if (a->is_negative)
+ {
+ if (0 != vec_len (ls->locator_indices))
+ delete = 1;
+ }
+ else
+ {
+ if (0 == vec_len (ls->locator_indices))
+ delete = 1;
+ }
+
+ if (delete)
+ vec_add1 (a->eids_to_be_deleted, m->eid);
+}
+
+/**
+ * This function searches map cache and looks for IP prefixes that are subset
+ * of the provided one. If such prefix is found depending on 'is_negative'
+ * it does follows:
+ *
+ * 1) if is_negative is true and found prefix points to positive mapping,
+ * then the mapping is removed
+ * 2) if is_negative is false and found prefix points to negative mapping,
+ * then the mapping is removed
+ */
+static void
+remove_overlapping_sub_prefixes (lisp_cp_main_t * lcm, gid_address_t * eid,
+ u8 is_negative)
+{
+ gid_address_t *e;
+ remove_mapping_args_t a;
+
+ clib_memset (&a, 0, sizeof (a));
+
+ /* do this only in src/dst mode ... */
+ if (MR_MODE_SRC_DST != lcm->map_request_mode)
+ return;
+
+ /* ... and only for IP prefix */
+ if (GID_ADDR_SRC_DST != gid_address_type (eid)
+ || (FID_ADDR_IP_PREF != gid_address_sd_dst_type (eid)))
+ return;
+
+ a.is_negative = is_negative;
+ a.lcm = lcm;
+
+ gid_dict_foreach_subprefix (&lcm->mapping_index_by_gid, eid,
+ remove_mapping_if_needed, &a);
+
+ vec_foreach (e, a.eids_to_be_deleted)
+ {
+ vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
+
+ clib_memset (adj_args, 0, sizeof (adj_args[0]));
+ gid_address_copy (&adj_args->reid, e);
+ adj_args->is_add = 0;
+ if (vnet_lisp_add_del_adjacency (adj_args))
+ clib_warning ("failed to del adjacency!");
+
+ vnet_lisp_del_mapping (e, NULL);
+ }
+
+ vec_free (a.eids_to_be_deleted);
+}
+
+static int
+is_local_ip (lisp_cp_main_t * lcm, ip_address_t * addr)
+{
+ fib_node_index_t fei;
+ fib_prefix_t prefix;
+ fib_entry_flag_t flags;
+
+ ip_address_to_fib_prefix (addr, &prefix);
+
+ fei = fib_table_lookup (0, &prefix);
+ flags = fib_entry_get_flags (fei);
+ return (FIB_ENTRY_FLAG_LOCAL & flags);
+}
+
+/**
+ * Adds/updates mapping. Does not program forwarding.
+ *
+ * @param a parameters of the new mapping
+ * @param rlocs vector of remote locators
+ * @param res_map_index index of the newly created mapping
+ * @param locators_changed indicator if locators were updated in the mapping
+ * @return return code
+ */
+int
+vnet_lisp_add_mapping (vnet_lisp_add_del_mapping_args_t * a,
+ locator_t * rlocs,
+ u32 * res_map_index, u8 * is_updated)
+{
+ vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ u32 mi, ls_index = 0, dst_map_index;
+ mapping_t *old_map;
+ locator_t *loc;
+
+ if (vnet_lisp_enable_disable_status () == 0)
+ {
+ clib_warning ("LISP is disabled!");
+ return VNET_API_ERROR_LISP_DISABLED;
+ }
+
+ if (res_map_index)
+ res_map_index[0] = ~0;
+ if (is_updated)
+ is_updated[0] = 0;
+
+ clib_memset (ls_args, 0, sizeof (ls_args[0]));
+
+ ls_args->locators = rlocs;
+ mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid);
+ old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
+
+ /* check if none of the locators match locally configured address */
+ vec_foreach (loc, rlocs)
+ {
+ ip_prefix_t *p = &gid_address_ippref (&loc->address);
+ if (is_local_ip (lcm, &ip_prefix_addr (p)))
+ {
+ clib_warning ("RLOC %U matches a local address!",
+ format_gid_address, &loc->address);
+ return VNET_API_ERROR_LISP_RLOC_LOCAL;
+ }
+ }
+
+ /* overwrite: if mapping already exists, decide if locators should be
+ * updated and be done */
+ if (old_map && gid_address_cmp (&old_map->eid, &a->eid) == 0)
+ {
+ if (!a->is_static && (old_map->is_static || old_map->local))
+ {
+ /* do not overwrite local or static remote mappings */
+ clib_warning ("mapping %U rejected due to collision with local "
+ "or static remote mapping!", format_gid_address,
+ &a->eid);
+ return 0;
+ }
+
+ locator_set_t *old_ls;
+
+ /* update mapping attributes */
+ old_map->action = a->action;
+ if (old_map->action != a->action && NULL != is_updated)
+ is_updated[0] = 1;
+
+ old_map->authoritative = a->authoritative;
+ old_map->ttl = a->ttl;
+
+ old_ls = pool_elt_at_index (lcm->locator_set_pool,
+ old_map->locator_set_index);
+ if (compare_locators (lcm, old_ls->locator_indices, ls_args->locators))
+ {
+ /* set locator-set index to overwrite */
+ ls_args->is_add = 1;
+ ls_args->index = old_map->locator_set_index;
+ vnet_lisp_add_del_locator_set (ls_args, 0);
+ if (is_updated)
+ is_updated[0] = 1;
+ }
+ if (res_map_index)
+ res_map_index[0] = mi;
+ }
+ /* new mapping */
+ else
+ {
+ if (is_updated)
+ is_updated[0] = 1;
+ remove_overlapping_sub_prefixes (lcm, &a->eid, 0 == ls_args->locators);
+
+ ls_args->is_add = 1;
+ ls_args->index = ~0;
+
+ vnet_lisp_add_del_locator_set (ls_args, &ls_index);
+
+ /* add mapping */
+ a->is_add = 1;
+ a->locator_set_index = ls_index;
+ vnet_lisp_map_cache_add_del (a, &dst_map_index);
+
+ if (res_map_index)
+ res_map_index[0] = dst_map_index;
+ }
+
+ /* success */
+ return 0;
+}
+
+/**
+ * Removes a mapping. Does not program forwarding.
+ *
+ * @param eid end-host identifier
+ * @param res_map_index index of the removed mapping
+ * @return return code
+ */
+int
+vnet_lisp_del_mapping (gid_address_t * eid, u32 * res_map_index)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
+ vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
+ mapping_t *old_map;
+ u32 mi;
+
+ clib_memset (ls_args, 0, sizeof (ls_args[0]));
+ clib_memset (m_args, 0, sizeof (m_args[0]));
+ if (res_map_index)
+ res_map_index[0] = ~0;
+
+ mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, eid);
+ old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
+
+ if (old_map == 0 || gid_address_cmp (&old_map->eid, eid) != 0)
+ {
+ clib_warning ("cannot delete mapping for eid %U",
+ format_gid_address, eid);
+ return -1;
+ }
+
+ m_args->is_add = 0;
+ gid_address_copy (&m_args->eid, eid);
+ m_args->locator_set_index = old_map->locator_set_index;
+
+ ls_args->is_add = 0;
+ ls_args->index = old_map->locator_set_index;
+
+ /* delete timer associated to the mapping if any */
+ if (old_map->timer_set)
+ TW (tw_timer_stop) (&lcm->wheel, old_map->timer_handle);
+
+ /* delete locator set */
+ vnet_lisp_add_del_locator_set (ls_args, 0);
+
+ /* delete mapping associated from map-cache */
+ vnet_lisp_map_cache_add_del (m_args, 0);
+
+ /* return old mapping index */
+ if (res_map_index)
+ res_map_index[0] = mi;
+
+ /* success */
+ return 0;
+}
+
+int
+vnet_lisp_clear_all_remote_adjacencies (void)
+{
+ int rv = 0;
+ u32 mi, *map_indices = 0, *map_indexp;
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ vnet_lisp_add_del_mapping_args_t _dm_args, *dm_args = &_dm_args;
+ vnet_lisp_add_del_locator_set_args_t _ls, *ls = &_ls;
+
+ /* *INDENT-OFF* */
+ pool_foreach_index (mi, lcm->mapping_pool,
+ ({
+ vec_add1 (map_indices, mi);
+ }));
+ /* *INDENT-ON* */
+
+ vec_foreach (map_indexp, map_indices)
+ {
+ mapping_t *map = pool_elt_at_index (lcm->mapping_pool, map_indexp[0]);
+ if (!map->local)
+ {
+ dp_del_fwd_entry (lcm, map_indexp[0]);
+
+ dm_args->is_add = 0;
+ gid_address_copy (&dm_args->eid, &map->eid);
+ dm_args->locator_set_index = map->locator_set_index;
+
+ /* delete mapping associated to fwd entry */
+ vnet_lisp_map_cache_add_del (dm_args, 0);
+
+ ls->is_add = 0;
+ ls->local = 0;
+ ls->index = map->locator_set_index;
+ /* delete locator set */
+ rv = vnet_lisp_add_del_locator_set (ls, 0);
+ if (rv != 0)
+ goto cleanup;
+ }
+ }
+
+cleanup:
+ if (map_indices)
+ vec_free (map_indices);
+ return rv;
+}
+
+/**
+ * Adds adjacency or removes forwarding entry associated to remote mapping.
+ * Note that adjacencies are not stored, they only result in forwarding entries
+ * being created.
+ */
+int
+vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a)
+{
+ lisp_cp_main_t *lcm = &lisp_control_main;
+ u32 local_mi, remote_mi = ~0;
+
+ if (vnet_lisp_enable_disable_status () == 0)
+ {
+ clib_warning ("LISP is disabled!");
+ return VNET_API_ERROR_LISP_DISABLED;
+ }
+
+ remote_mi = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid,
+ &a->reid, &a->leid);
+ if (GID_LOOKUP_MISS == remote_mi)
+ {
+ clib_warning ("Remote eid %U not found. Cannot add adjacency!",
+ format_gid_address, &a->reid);
+
+ return -1;
+ }
+
+ if (a->is_add)
+ {
+ /* check if source eid has an associated mapping. If pitr mode is on,
+ * just use the pitr's mapping */
+ if (lcm->flags & LISP_FLAG_PITR_MODE)
+ {
+ if (lcm->pitr_map_index != ~0)
+ {
+ local_mi = lcm->pitr_map_index;
+ }
+ else
+ {
+ /* PITR mode is on, but no mapping is configured */
+ return -1;
+ }
+ }
+ else
+ {
+ if (gid_address_type (&a->reid) == GID_ADDR_NSH)
+ {
+ if (lcm->nsh_map_index == ~0)
+ local_mi = GID_LOOKUP_MISS;
+ else
+ local_mi = lcm->nsh_map_index;
+ }
+ else
+ {
+ local_mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
+ &a->leid);
+ }
+ }
+
+ if (GID_LOOKUP_MISS == local_mi)
+ {
+ clib_warning ("Local eid %U not found. Cannot add adjacency!",
+ format_gid_address, &a->leid);
+
+ return -1;
+ }
+
+ /* update forwarding */
+ dp_add_fwd_entry (lcm, local_mi, remote_mi);
+ }
+ else
+ dp_del_fwd_entry (lcm, remote_mi);
+
+ return 0;
+}
+
+int
+vnet_lisp_set_map_request_mode (u8 mode)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+
+ if (vnet_lisp_enable_disable_status () == 0)
+ {
+ clib_warning ("LISP is disabled!");
+ return VNET_API_ERROR_LISP_DISABLED;
+ }
+
+ if (mode >= _MR_MODE_MAX)
+ {
+ clib_warning ("Invalid LISP map request mode %d!", mode);
+ return VNET_API_ERROR_INVALID_ARGUMENT;
+ }
+
+ lcm->map_request_mode = mode;
+ return 0;
+}
+
+int
+vnet_lisp_nsh_set_locator_set (u8 * locator_set_name, u8 is_add)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
+ u32 locator_set_index = ~0;
+ mapping_t *m;
+ uword *p;
+
+ if (vnet_lisp_enable_disable_status () == 0)
+ {
+ clib_warning ("LISP is disabled!");
+ return VNET_API_ERROR_LISP_DISABLED;
+ }
+
+ if (is_add)
+ {
+ if (lcm->nsh_map_index == (u32) ~ 0)
+ {
+ p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
+ if (!p)
+ {
+ clib_warning ("locator-set %v doesn't exist", locator_set_name);
+ return -1;
+ }
+ locator_set_index = p[0];
+
+ pool_get (lcm->mapping_pool, m);
+ clib_memset (m, 0, sizeof *m);
+ m->locator_set_index = locator_set_index;
+ m->local = 1;
+ m->nsh_set = 1;
+ lcm->nsh_map_index = m - lcm->mapping_pool;
+
+ if (~0 == vnet_lisp_gpe_add_nsh_iface (lgm))
+ return -1;
+ }
+ }
+ else
+ {
+ if (lcm->nsh_map_index != (u32) ~ 0)
+ {
+ /* remove NSH mapping */
+ pool_put_index (lcm->mapping_pool, lcm->nsh_map_index);
+ lcm->nsh_map_index = ~0;
+ vnet_lisp_gpe_del_nsh_iface (lgm);
+ }
+ }
+ return 0;
+}
+
+int
+vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ u32 locator_set_index = ~0;
+ mapping_t *m;
+ uword *p;
+
+ if (vnet_lisp_enable_disable_status () == 0)
+ {
+ clib_warning ("LISP is disabled!");
+ return VNET_API_ERROR_LISP_DISABLED;
+ }
+
+ p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
+ if (!p)
+ {
+ clib_warning ("locator-set %v doesn't exist", locator_set_name);
+ return -1;
+ }
+ locator_set_index = p[0];
+
+ if (is_add)
+ {
+ pool_get (lcm->mapping_pool, m);
+ m->locator_set_index = locator_set_index;
+ m->local = 1;
+ m->pitr_set = 1;
+ lcm->pitr_map_index = m - lcm->mapping_pool;
+ }
+ else
+ {
+ /* remove pitr mapping */
+ pool_put_index (lcm->mapping_pool, lcm->pitr_map_index);
+ lcm->pitr_map_index = ~0;
+ }
+ return 0;
+}
+
+int
+vnet_lisp_map_register_fallback_threshold_set (u32 value)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ if (0 == value)
+ {
+ return VNET_API_ERROR_INVALID_ARGUMENT;
+ }
+
+ lcm->max_expired_map_registers = value;
+ return 0;
+}
+
+u32
+vnet_lisp_map_register_fallback_threshold_get (void)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ return lcm->max_expired_map_registers;
+}
+
+/**
+ * Configure Proxy-ETR
+ *
+ * @param ip PETR's IP address
+ * @param is_add Flag that indicates if this is an addition or removal
+ *
+ * return 0 on success
+ */
+int
+vnet_lisp_use_petr (ip_address_t * ip, u8 is_add)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ u32 ls_index = ~0;
+ mapping_t *m;
+ vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
+ locator_t loc;
+
+ if (vnet_lisp_enable_disable_status () == 0)
+ {
+ clib_warning ("LISP is disabled!");
+ return VNET_API_ERROR_LISP_DISABLED;
+ }
+
+ clib_memset (ls_args, 0, sizeof (*ls_args));
+
+ if (is_add)
+ {
+ /* Create placeholder petr locator-set */
+ clib_memset (&loc, 0, sizeof (loc));
+ gid_address_from_ip (&loc.address, ip);
+ loc.priority = 1;
+ loc.state = loc.weight = 1;
+ loc.local = 0;
+
+ ls_args->is_add = 1;
+ ls_args->index = ~0;
+ vec_add1 (ls_args->locators, loc);
+ vnet_lisp_add_del_locator_set (ls_args, &ls_index);
+
+ /* Add petr mapping */
+ pool_get (lcm->mapping_pool, m);
+ m->locator_set_index = ls_index;
+ lcm->petr_map_index = m - lcm->mapping_pool;
+
+ /* Enable use-petr */
+ lcm->flags |= LISP_FLAG_USE_PETR;
+ }
+ else
+ {
+ m = pool_elt_at_index (lcm->mapping_pool, lcm->petr_map_index);
+
+ /* Remove petr locator */
+ ls_args->is_add = 0;
+ ls_args->index = m->locator_set_index;
+ vnet_lisp_add_del_locator_set (ls_args, 0);
+
+ /* Remove petr mapping */
+ pool_put_index (lcm->mapping_pool, lcm->petr_map_index);
+
+ /* Disable use-petr */
+ lcm->flags &= ~LISP_FLAG_USE_PETR;
+ lcm->petr_map_index = ~0;
+ }
+ return 0;
+}
+
+/* cleans locator to locator-set data and removes locators not part of
+ * any locator-set */
+static void
+clean_locator_to_locator_set (lisp_cp_main_t * lcm, u32 lsi)
+{
+ u32 i, j, *loc_indexp, *ls_indexp, **ls_indexes, *to_be_deleted = 0;
+ locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool, lsi);
+ for (i = 0; i < vec_len (ls->locator_indices); i++)
+ {
+ loc_indexp = vec_elt_at_index (ls->locator_indices, i);
+ ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
+ loc_indexp[0]);
+ for (j = 0; j < vec_len (ls_indexes[0]); j++)
+ {
+ ls_indexp = vec_elt_at_index (ls_indexes[0], j);
+ if (ls_indexp[0] == lsi)
+ break;
+ }
+
+ /* delete index for removed locator-set */
+ vec_del1 (ls_indexes[0], j);
+
+ /* delete locator if it's part of no locator-set */
+ if (vec_len (ls_indexes[0]) == 0)
+ {
+ pool_put_index (lcm->locator_pool, loc_indexp[0]);
+ vec_add1 (to_be_deleted, i);
+ }
+ }
+
+ if (to_be_deleted)
+ {
+ for (i = 0; i < vec_len (to_be_deleted); i++)
+ {
+ loc_indexp = vec_elt_at_index (to_be_deleted, i);
+ vec_del1 (ls->locator_indices, loc_indexp[0]);
+ }
+ vec_free (to_be_deleted);
+ }
+}
+
+static inline uword *
+get_locator_set_index (vnet_lisp_add_del_locator_set_args_t * a, uword * p)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+
+ ASSERT (a != NULL);
+ ASSERT (p != NULL);
+
+ /* find locator-set */
+ if (a->local)
+ {
+ ASSERT (a->name);
+ p = hash_get_mem (lcm->locator_set_index_by_name, a->name);
+ }
+ else
+ {
+ *p = a->index;
+ }
+
+ return p;
+}
+
+static inline int
+is_locator_in_locator_set (lisp_cp_main_t * lcm, locator_set_t * ls,
+ locator_t * loc)
+{
+ locator_t *itloc;
+ u32 *locit;
+
+ ASSERT (ls != NULL);
+ ASSERT (loc != NULL);
+
+ vec_foreach (locit, ls->locator_indices)
+ {
+ itloc = pool_elt_at_index (lcm->locator_pool, locit[0]);
+ if ((ls->local && itloc->sw_if_index == loc->sw_if_index) ||
+ (!ls->local && !gid_address_cmp (&itloc->address, &loc->address)))
+ {
+ clib_warning ("Duplicate locator");
+ return VNET_API_ERROR_VALUE_EXIST;
+ }
+ }
+
+ return 0;
+}
+
+static void
+update_adjacencies_by_map_index (lisp_cp_main_t * lcm,
+ u32 mapping_index, u8 remove_only)
+{
+ fwd_entry_t *fwd;
+ mapping_t *map;
+ uword *fei = 0, *rmts_idxp = 0;
+ u32 **rmts = 0, *remote_idxp = 0, *rmts_copy = 0;
+ vnet_lisp_add_del_adjacency_args_t _a, *a = &_a;
+ clib_memset (a, 0, sizeof (*a));
+
+ map = pool_elt_at_index (lcm->mapping_pool, mapping_index);
+
+ if (map->local)
+ {
+ rmts_idxp = hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, mapping_index);
+ if (rmts_idxp)
+ {
+ rmts =
+ pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idxp[0]);
+ rmts_copy = vec_dup (rmts[0]);
+
+ vec_foreach (remote_idxp, rmts_copy)
+ {
+ fei = hash_get (lcm->fwd_entry_by_mapping_index, remote_idxp[0]);
+ if (!fei)
+ continue;
+
+ fwd = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
+ a->is_add = 0;
+ gid_address_copy (&a->leid, &fwd->leid);
+ gid_address_copy (&a->reid, &fwd->reid);
+ vnet_lisp_add_del_adjacency (a);
+
+ if (!remove_only)
+ {
+ a->is_add = 1;
+ vnet_lisp_add_del_adjacency (a);
+ }
+ }
+ vec_free (rmts_copy);
+ }
+ }
+ else
+ {
+ fei = hash_get (lcm->fwd_entry_by_mapping_index, mapping_index);
+ if (!fei)
+ return;
+
+ fwd = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
+ a->is_add = 0;
+ gid_address_copy (&a->leid, &fwd->leid);
+ gid_address_copy (&a->reid, &fwd->reid);
+ vnet_lisp_add_del_adjacency (a);
+
+ if (!remove_only)
+ {
+ a->is_add = 1;
+ vnet_lisp_add_del_adjacency (a);
+ }
+ }
+}
+
+static void
+update_fwd_entries_by_locator_set (lisp_cp_main_t * lcm,
+ u32 ls_index, u8 remove_only)
+{
+ u32 i, *map_indexp;
+ u32 **eid_indexes;
+
+ if (vec_len (lcm->locator_set_to_eids) <= ls_index)
+ return;
+
+ eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, ls_index);
+
+ for (i = 0; i < vec_len (eid_indexes[0]); i++)
+ {
+ map_indexp = vec_elt_at_index (eid_indexes[0], i);
+ update_adjacencies_by_map_index (lcm, map_indexp[0], remove_only);
+ }
+}
+
+static inline void
+remove_locator_from_locator_set (locator_set_t * ls, u32 * locit,
+ u32 ls_index, u32 loc_id)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ u32 **ls_indexes = NULL;
+
+ ASSERT (ls != NULL);
+ ASSERT (locit != NULL);
+
+ ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets, locit[0]);
+ pool_put_index (lcm->locator_pool, locit[0]);
+ vec_del1 (ls->locator_indices, loc_id);
+ vec_del1 (ls_indexes[0], ls_index);
+}
+
+int
+vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t * a,
+ locator_set_t * ls, u32 * ls_result)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ locator_t *loc = NULL, *itloc = NULL;
+ uword _p = (u32) ~ 0, *p = &_p;
+ u32 loc_index = ~0, ls_index = ~0, *locit = NULL, **ls_indexes = NULL;
+ u32 loc_id = ~0;
+ int ret = 0;
+
+ ASSERT (a != NULL);
+
+ if (vnet_lisp_enable_disable_status () == 0)
+ {
+ clib_warning ("LISP is disabled!");
+ return VNET_API_ERROR_LISP_DISABLED;
+ }
+
+ p = get_locator_set_index (a, p);
+ if (!p)
+ {
+ clib_warning ("locator-set %v doesn't exist", a->name);
+ return VNET_API_ERROR_INVALID_ARGUMENT;
+ }
+
+ if (ls == 0)
+ {
+ ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
+ if (!ls)
+ {
+ clib_warning ("locator-set %d to be overwritten doesn't exist!",
+ p[0]);
+ return VNET_API_ERROR_INVALID_ARGUMENT;
+ }
+ }
+
+ if (a->is_add)
+ {
+ if (ls_result)
+ ls_result[0] = p[0];
+
+ /* allocate locators */
+ vec_foreach (itloc, a->locators)
+ {
+ ret = is_locator_in_locator_set (lcm, ls, itloc);
+ if (0 != ret)
+ {
+ return ret;
+ }
+
+ pool_get (lcm->locator_pool, loc);
+ loc[0] = itloc[0];
+ loc_index = loc - lcm->locator_pool;
+
+ vec_add1 (ls->locator_indices, loc_index);
+
+ vec_validate (lcm->locator_to_locator_sets, loc_index);
+ ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
+ loc_index);
+ vec_add1 (ls_indexes[0], p[0]);
+ }
+ }
+ else
+ {
+ ls_index = p[0];
+ u8 removed;
+
+ vec_foreach (itloc, a->locators)
+ {
+ removed = 0;
+ loc_id = 0;
+ vec_foreach (locit, ls->locator_indices)
+ {
+ loc = pool_elt_at_index (lcm->locator_pool, locit[0]);
+
+ if (loc->local && loc->sw_if_index == itloc->sw_if_index)
+ {
+ removed = 1;
+ remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
+ }
+ else if (0 == loc->local &&
+ !gid_address_cmp (&loc->address, &itloc->address))
+ {
+ removed = 1;
+ remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
+ }
+
+ if (removed)
+ {
+ /* update fwd entries using this locator in DP */
+ update_fwd_entries_by_locator_set (lcm, ls_index,
+ vec_len (ls->locator_indices)
+ == 0);
+ }
+
+ loc_id++;
+ }
+ }
+ }
+
+ return 0;
+}
+
+int
+vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a,
+ u32 * ls_result)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ locator_set_t *ls;
+ uword _p = (u32) ~ 0, *p = &_p;
+ u32 ls_index;
+ u32 **eid_indexes;
+ int ret = 0;
+
+ if (vnet_lisp_enable_disable_status () == 0)
+ {
+ clib_warning ("LISP is disabled!");
+ return VNET_API_ERROR_LISP_DISABLED;
+ }
+
+ if (a->is_add)
+ {
+ p = get_locator_set_index (a, p);
+
+ /* overwrite */
+ if (p && p[0] != (u32) ~ 0)
+ {
+ ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
+ if (!ls)
+ {
+ clib_warning ("locator-set %d to be overwritten doesn't exist!",
+ p[0]);
+ return -1;
+ }
+
+ /* clean locator to locator-set vectors and remove locators if
+ * they're not part of another locator-set */
+ clean_locator_to_locator_set (lcm, p[0]);
+
+ /* remove locator indices from locator set */
+ vec_free (ls->locator_indices);
+
+ ls_index = p[0];
+
+ if (ls_result)
+ ls_result[0] = p[0];
+ }
+ /* new locator-set */
+ else
+ {
+ pool_get (lcm->locator_set_pool, ls);
+ clib_memset (ls, 0, sizeof (*ls));
+ ls_index = ls - lcm->locator_set_pool;
+
+ if (a->local)
+ {
+ ls->name = vec_dup (a->name);
+
+ if (!lcm->locator_set_index_by_name)
+ lcm->locator_set_index_by_name =
+ hash_create_vec ( /* size */ 0, sizeof (ls->name[0]),
+ sizeof (uword));
+ hash_set_mem (lcm->locator_set_index_by_name, ls->name,
+ ls_index);
+
+ /* mark as local locator-set */
+ vec_add1 (lcm->local_locator_set_indexes, ls_index);
+ }
+ ls->local = a->local;
+ if (ls_result)
+ ls_result[0] = ls_index;
+ }
+
+ ret = vnet_lisp_add_del_locator (a, ls, NULL);
+ if (0 != ret)
+ {
+ return ret;
+ }
+ }
+ else
+ {
+ p = get_locator_set_index (a, p);
+ if (!p)
+ {
+ clib_warning ("locator-set %v doesn't exists", a->name);
+ return -1;
+ }
+
+ ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
+ if (!ls)
+ {
+ clib_warning ("locator-set with index %d doesn't exists", p[0]);
+ return -1;
+ }
+
+ if (lcm->mreq_itr_rlocs == p[0])
+ {
+ clib_warning ("Can't delete the locator-set used to constrain "
+ "the itr-rlocs in map-requests!");
+ return -1;
+ }
+
+ if (vec_len (lcm->locator_set_to_eids) != 0)
+ {
+ eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, p[0]);
+ if (vec_len (eid_indexes[0]) != 0)
+ {
+ clib_warning
+ ("Can't delete a locator that supports a mapping!");
+ return -1;
+ }
+ }
+
+ /* clean locator to locator-sets data */
+ clean_locator_to_locator_set (lcm, p[0]);
+
+ if (ls->local)
+ {
+ u32 it, lsi;
+
+ vec_foreach_index (it, lcm->local_locator_set_indexes)
+ {
+ lsi = vec_elt (lcm->local_locator_set_indexes, it);
+ if (lsi == p[0])
+ {
+ vec_del1 (lcm->local_locator_set_indexes, it);
+ break;
+ }
+ }
+ hash_unset_mem (lcm->locator_set_index_by_name, ls->name);
+ }
+ vec_free (ls->name);
+ vec_free (ls->locator_indices);
+ pool_put (lcm->locator_set_pool, ls);
+ }
+ return 0;
+}
+
+int
+vnet_lisp_rloc_probe_enable_disable (u8 is_enable)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+
+ lcm->rloc_probing = is_enable;
+ return 0;
+}
+
+int
+vnet_lisp_map_register_enable_disable (u8 is_enable)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+
+ lcm->map_registering = is_enable;
+ return 0;
+}
+
+static void
+lisp_cp_register_dst_port (vlib_main_t * vm)
+{
+ udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp,
+ lisp_cp_input_node.index, 1 /* is_ip4 */ );
+ udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6,
+ lisp_cp_input_node.index, 0 /* is_ip4 */ );
+}
+
+static void
+lisp_cp_unregister_dst_port (vlib_main_t * vm)
+{
+ udp_unregister_dst_port (vm, UDP_DST_PORT_lisp_cp, 0 /* is_ip4 */ );
+ udp_unregister_dst_port (vm, UDP_DST_PORT_lisp_cp6, 1 /* is_ip4 */ );
+}
+
+/**
+ * lisp_cp_enable_l2_l3_ifaces
+ *
+ * Enable all l2 and l3 ifaces
+ */
+static void
+lisp_cp_enable_l2_l3_ifaces (lisp_cp_main_t * lcm, u8 with_default_route)
+{
+ u32 vni, dp_table;
+
+ /* *INDENT-OFF* */
+ hash_foreach(vni, dp_table, lcm->table_id_by_vni, ({
+ dp_add_del_iface(lcm, vni, /* is_l2 */ 0, /* is_add */1,
+ with_default_route);
+ }));
+ hash_foreach(vni, dp_table, lcm->bd_id_by_vni, ({
+ dp_add_del_iface(lcm, vni, /* is_l2 */ 1, 1,
+ with_default_route);
+ }));
+ /* *INDENT-ON* */
+}
+
+static void
+lisp_cp_disable_l2_l3_ifaces (lisp_cp_main_t * lcm)
+{
+ u32 **rmts;
+
+ /* clear interface table */
+ hash_free (lcm->fwd_entry_by_mapping_index);
+ pool_free (lcm->fwd_entry_pool);
+ /* Clear state tracking rmt-lcl fwd entries */
+ /* *INDENT-OFF* */
+ pool_foreach(rmts, lcm->lcl_to_rmt_adjacencies,
+ {
+ vec_free(rmts[0]);
+ });
+ /* *INDENT-ON* */
+ hash_free (lcm->lcl_to_rmt_adjs_by_lcl_idx);
+ pool_free (lcm->lcl_to_rmt_adjacencies);
+}
+
+clib_error_t *
+vnet_lisp_enable_disable (u8 is_enable)
+{
+ clib_error_t *error = 0;
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ vnet_lisp_gpe_enable_disable_args_t _a, *a = &_a;
+
+ a->is_en = is_enable;
+ error = vnet_lisp_gpe_enable_disable (a);
+ if (error)
+ {
+ return clib_error_return (0, "failed to %s data-plane!",
+ a->is_en ? "enable" : "disable");
+ }
+
+ /* decide what to do based on mode */
+
+ if (lcm->flags & LISP_FLAG_XTR_MODE)
+ {
+ if (is_enable)
+ {
+ lisp_cp_register_dst_port (lcm->vlib_main);
+ lisp_cp_enable_l2_l3_ifaces (lcm, 1 /* with_default_route */ );
+ }
+ else
+ {
+ lisp_cp_unregister_dst_port (lcm->vlib_main);
+ lisp_cp_disable_l2_l3_ifaces (lcm);
+ }
+ }
+
+ if (lcm->flags & LISP_FLAG_PETR_MODE)
+ {
+ /* if in xTR mode, the LISP ports were already (un)registered above */
+ if (!(lcm->flags & LISP_FLAG_XTR_MODE))
+ {
+ if (is_enable)
+ lisp_cp_register_dst_port (lcm->vlib_main);
+ else
+ lisp_cp_unregister_dst_port (lcm->vlib_main);
+ }
+ }
+
+ if (lcm->flags & LISP_FLAG_PITR_MODE)
+ {
+ if (is_enable)
+ {
+ /* install interfaces, but no default routes */
+ lisp_cp_enable_l2_l3_ifaces (lcm, 0 /* with_default_route */ );
+ }
+ else
+ {
+ lisp_cp_disable_l2_l3_ifaces (lcm);
+ }
+ }
+
+ if (is_enable)
+ vnet_lisp_create_retry_process (lcm);
+
+ /* update global flag */
+ lcm->is_enabled = is_enable;
+
+ return 0;
+}
+
+u8
+vnet_lisp_enable_disable_status (void)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ return lcm->is_enabled;
+}
+
+int
+vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ u32 i;
+ lisp_msmr_t _mr, *mr = &_mr;
+
+ if (vnet_lisp_enable_disable_status () == 0)
+ {
+ clib_warning ("LISP is disabled!");
+ return VNET_API_ERROR_LISP_DISABLED;
+ }
+
+ if (a->is_add)
+ {
+
+ if (get_map_resolver (&a->address))
+ {
+ clib_warning ("map-resolver %U already exists!", format_ip_address,
+ &a->address);
+ return -1;
+ }
+
+ clib_memset (mr, 0, sizeof (*mr));
+ ip_address_copy (&mr->address, &a->address);
+ vec_add1 (lcm->map_resolvers, *mr);
+
+ if (vec_len (lcm->map_resolvers) == 1)
+ lcm->do_map_resolver_election = 1;
+ }
+ else
+ {
+ for (i = 0; i < vec_len (lcm->map_resolvers); i++)
+ {
+ mr = vec_elt_at_index (lcm->map_resolvers, i);
+ if (!ip_address_cmp (&mr->address, &a->address))
+ {
+ if (!ip_address_cmp (&mr->address, &lcm->active_map_resolver))
+ lcm->do_map_resolver_election = 1;
+
+ vec_del1 (lcm->map_resolvers, i);
+ break;
+ }
+ }
+ }
+ return 0;
+}
+
+int
+vnet_lisp_map_register_set_ttl (u32 ttl)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ lcm->map_register_ttl = ttl;
+ return 0;
+}
+
+u32
+vnet_lisp_map_register_get_ttl (void)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ return lcm->map_register_ttl;
+}
+
+int
+vnet_lisp_add_del_mreq_itr_rlocs (vnet_lisp_add_del_mreq_itr_rloc_args_t * a)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ uword *p = 0;
+
+ if (vnet_lisp_enable_disable_status () == 0)
+ {
+ clib_warning ("LISP is disabled!");
+ return VNET_API_ERROR_LISP_DISABLED;
+ }
+
+ if (a->is_add)
+ {
+ p = hash_get_mem (lcm->locator_set_index_by_name, a->locator_set_name);
+ if (!p)
+ {
+ clib_warning ("locator-set %v doesn't exist", a->locator_set_name);
+ return VNET_API_ERROR_INVALID_ARGUMENT;
+ }
+
+ lcm->mreq_itr_rlocs = p[0];
+ }
+ else
+ {
+ lcm->mreq_itr_rlocs = ~0;
+ }
+
+ return 0;
+}
+
+/* Statistics (not really errors) */
+#define foreach_lisp_cp_lookup_error \
+_(DROP, "drop") \
+_(MAP_REQUESTS_SENT, "map-request sent") \
+_(ARP_REPLY_TX, "ARP replies sent") \
+_(NDP_NEIGHBOR_ADVERTISEMENT_TX, \
+ "neighbor advertisement sent")
+
+static char *lisp_cp_lookup_error_strings[] = {
+#define _(sym,string) string,
+ foreach_lisp_cp_lookup_error
+#undef _
+};
+
+typedef enum
+{
+#define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym,
+ foreach_lisp_cp_lookup_error
+#undef _
+ LISP_CP_LOOKUP_N_ERROR,
+} lisp_cp_lookup_error_t;
+
+typedef enum
+{
+ LISP_CP_LOOKUP_NEXT_DROP,
+ LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX,
+ LISP_CP_LOOKUP_N_NEXT,
+} lisp_cp_lookup_next_t;
+
+typedef struct
+{
+ gid_address_t dst_eid;
+ ip_address_t map_resolver_ip;
+} lisp_cp_lookup_trace_t;
+
+u8 *
+format_lisp_cp_lookup_trace (u8 * s, va_list * args)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ lisp_cp_lookup_trace_t *t = va_arg (*args, lisp_cp_lookup_trace_t *);
+
+ s = format (s, "LISP-CP-LOOKUP: map-resolver: %U destination eid %U",
+ format_ip_address, &t->map_resolver_ip, format_gid_address,
+ &t->dst_eid);
+ return s;
+}
+
+int
+get_mr_and_local_iface_ip (lisp_cp_main_t * lcm, ip_address_t * mr_ip,
+ ip_address_t * sloc)
+{
+ lisp_msmr_t *mrit;
+ ip_address_t *a;
+
+ if (vec_len (lcm->map_resolvers) == 0)
+ {
+ clib_warning ("No map-resolver configured");
+ return 0;
+ }
+
+ /* find the first mr ip we have a route to and the ip of the
+ * iface that has a route to it */
+ vec_foreach (mrit, lcm->map_resolvers)
+ {
+ a = &mrit->address;
+ if (0 != ip_fib_get_first_egress_ip_for_dst (lcm, a, sloc))
+ {
+ ip_address_copy (mr_ip, a);
+
+ /* also update globals */
+ return 1;
+ }
+ }
+
+ clib_warning ("Can't find map-resolver and local interface ip!");
+ return 0;
+}
+
+static gid_address_t *
+build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set)
+{
+ void *addr;
+ u32 i;
+ locator_t *loc;
+ u32 *loc_indexp;
+ ip_interface_address_t *ia = 0;
+ gid_address_t gid_data, *gid = &gid_data;
+ gid_address_t *rlocs = 0;
+ ip_prefix_t *ippref = &gid_address_ippref (gid);
+ ip_address_t *rloc = &ip_prefix_addr (ippref);
+
+ clib_memset (gid, 0, sizeof (gid[0]));
+ gid_address_type (gid) = GID_ADDR_IP_PREFIX;
+ for (i = 0; i < vec_len (loc_set->locator_indices); i++)
+ {
+ loc_indexp = vec_elt_at_index (loc_set->locator_indices, i);
+ loc = pool_elt_at_index (lcm->locator_pool, loc_indexp[0]);
+
+ /* Add ipv4 locators first TODO sort them */
+
+ /* *INDENT-OFF* */
+ foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
+ loc->sw_if_index, 1 /* unnumbered */,
+ ({
+ addr = ip_interface_address_get_address (&lcm->im4->lookup_main, ia);
+ ip_address_set (rloc, addr, AF_IP4);
+ ip_prefix_len (ippref) = 32;
+ ip_prefix_normalize (ippref);
+ vec_add1 (rlocs, gid[0]);
+ }));
+
+ /* Add ipv6 locators */
+ foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
+ loc->sw_if_index, 1 /* unnumbered */,
+ ({
+ addr = ip_interface_address_get_address (&lcm->im6->lookup_main, ia);
+ ip_address_set (rloc, addr, AF_IP6);
+ ip_prefix_len (ippref) = 128;
+ ip_prefix_normalize (ippref);
+ vec_add1 (rlocs, gid[0]);
+ }));
+ /* *INDENT-ON* */
+
+ }
+ return rlocs;
+}
+
+static vlib_buffer_t *
+build_map_request (lisp_cp_main_t * lcm, gid_address_t * deid,
+ ip_address_t * sloc, ip_address_t * rloc,
+ gid_address_t * itr_rlocs, u64 * nonce_res, u32 * bi_res)
+{
+ vlib_buffer_t *b;
+ u32 bi;
+ vlib_main_t *vm = lcm->vlib_main;
+
+ if (vlib_buffer_alloc (vm, &bi, 1) != 1)
+ {
+ clib_warning ("Can't allocate buffer for Map-Request!");
+ return 0;
+ }
+
+ b = vlib_get_buffer (vm, bi);
+
+ /* leave some space for the encap headers */
+ vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
+
+ /* put lisp msg */
+ lisp_msg_put_mreq (lcm, b, NULL, deid, itr_rlocs, 0 /* smr invoked */ ,
+ 1 /* rloc probe */ , nonce_res);
+
+ /* push outer ip header */
+ pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
+ rloc, 1);
+
+ bi_res[0] = bi;
+
+ return b;
+}
+
+static vlib_buffer_t *
+build_encapsulated_map_request (lisp_cp_main_t * lcm,
+ gid_address_t * seid, gid_address_t * deid,
+ locator_set_t * loc_set, ip_address_t * mr_ip,
+ ip_address_t * sloc, u8 is_smr_invoked,
+ u64 * nonce_res, u32 * bi_res)
+{
+ vlib_buffer_t *b;
+ u32 bi;
+ gid_address_t *rlocs = 0;
+ vlib_main_t *vm = lcm->vlib_main;
+
+ if (vlib_buffer_alloc (vm, &bi, 1) != 1)
+ {
+ clib_warning ("Can't allocate buffer for Map-Request!");
+ return 0;
+ }
+
+ b = vlib_get_buffer (vm, bi);
+ b->flags = 0;
+
+ /* leave some space for the encap headers */
+ vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
+
+ /* get rlocs */
+ rlocs = build_itr_rloc_list (lcm, loc_set);
+
+ if (MR_MODE_SRC_DST == lcm->map_request_mode
+ && GID_ADDR_SRC_DST != gid_address_type (deid))
+ {
+ gid_address_t sd;
+ clib_memset (&sd, 0, sizeof (sd));
+ build_src_dst (&sd, seid, deid);
+ lisp_msg_put_mreq (lcm, b, seid, &sd, rlocs, is_smr_invoked,
+ 0 /* rloc probe */ , nonce_res);
+ }
+ else
+ {
+ /* put lisp msg */
+ lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked,
+ 0 /* rloc probe */ , nonce_res);
+ }
+
+ /* push ecm: udp-ip-lisp */
+ lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid);
+
+ /* push outer ip header */
+ pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
+ mr_ip, 1);
+
+ bi_res[0] = bi;
+
+ vec_free (rlocs);
+ return b;
+}
+
+static void
+reset_pending_mr_counters (pending_map_request_t * r)
+{
+ r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
+ r->retries_num = 0;
+}
+
+#define foreach_msmr \
+ _(server) \
+ _(resolver)
+
+#define _(name) \
+static int \
+elect_map_ ## name (lisp_cp_main_t * lcm) \
+{ \
+ lisp_msmr_t *mr; \
+ vec_foreach (mr, lcm->map_ ## name ## s) \
+ { \
+ if (!mr->is_down) \
+ { \
+ ip_address_copy (&lcm->active_map_ ##name, &mr->address); \
+ lcm->do_map_ ## name ## _election = 0; \
+ return 1; \
+ } \
+ } \
+ return 0; \
+}
+foreach_msmr
+#undef _
+ static void
+free_map_register_records (mapping_t * maps)
+{
+ mapping_t *map;
+ vec_foreach (map, maps) vec_free (map->locators);
+
+ vec_free (maps);
+}
+
+static void
+add_locators (lisp_cp_main_t * lcm, mapping_t * m, u32 locator_set_index,
+ ip_address_t * probed_loc)
+{
+ u32 *li;
+ locator_t *loc, new;
+ ip_interface_address_t *ia = 0;
+ void *addr;
+ ip_address_t *new_ip = &gid_address_ip (&new.address);
+
+ m->locators = 0;
+ locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool,
+ locator_set_index);
+ vec_foreach (li, ls->locator_indices)
+ {
+ loc = pool_elt_at_index (lcm->locator_pool, li[0]);
+ new = loc[0];
+ if (loc->local)
+ {
+ /* *INDENT-OFF* */
+ foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
+ loc->sw_if_index, 1 /* unnumbered */,
+ ({
+ addr = ip_interface_address_get_address (&lcm->im4->lookup_main,
+ ia);
+ ip_address_set (new_ip, addr, AF_IP4);
+ }));
+
+ /* Add ipv6 locators */
+ foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
+ loc->sw_if_index, 1 /* unnumbered */,
+ ({
+ addr = ip_interface_address_get_address (&lcm->im6->lookup_main,
+ ia);
+ ip_address_set (new_ip, addr, AF_IP6);
+ }));
+ /* *INDENT-ON* */
+
+ if (probed_loc && ip_address_cmp (probed_loc, new_ip) == 0)
+ new.probed = 1;
+ }
+ vec_add1 (m->locators, new);
+ }
+}
+
+static mapping_t *
+build_map_register_record_list (lisp_cp_main_t * lcm)
+{
+ mapping_t *recs = 0, rec, *m;
+
+ /* *INDENT-OFF* */
+ pool_foreach(m, lcm->mapping_pool,
+ {
+ /* for now build only local mappings */
+ if (!m->local)
+ continue;
+
+ rec = m[0];
+ add_locators (lcm, &rec, m->locator_set_index, NULL);
+ vec_add1 (recs, rec);
+ });
+ /* *INDENT-ON* */
+
+ return recs;
+}
+
+static vnet_crypto_alg_t
+lisp_key_type_to_crypto_alg (lisp_key_type_t key_id)
+{
+ switch (key_id)
+ {
+ case HMAC_SHA_1_96:
+ return VNET_CRYPTO_ALG_HMAC_SHA1;
+ case HMAC_SHA_256_128:
+ return VNET_CRYPTO_ALG_HMAC_SHA256;
+ default:
+ clib_warning ("unsupported encryption key type: %d!", key_id);
+ break;
+ }
+ return VNET_CRYPTO_ALG_NONE;
+}
+
+static vnet_crypto_op_id_t
+lisp_key_type_to_crypto_op (lisp_key_type_t key_id)
+{
+ switch (key_id)
+ {
+ case HMAC_SHA_1_96:
+ return VNET_CRYPTO_OP_SHA1_HMAC;
+ case HMAC_SHA_256_128:
+ return VNET_CRYPTO_OP_SHA256_HMAC;
+ default:
+ clib_warning ("unsupported encryption key type: %d!", key_id);
+ break;
+ }
+ return VNET_CRYPTO_OP_NONE;
+}
+
+static int
+update_map_register_auth_data (map_register_hdr_t * map_reg_hdr,
+ lisp_key_type_t key_id, u8 * key,
+ u16 auth_data_len, u32 msg_len)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ MREG_KEY_ID (map_reg_hdr) = clib_host_to_net_u16 (key_id);
+ MREG_AUTH_DATA_LEN (map_reg_hdr) = clib_host_to_net_u16 (auth_data_len);
+ vnet_crypto_op_t _op, *op = &_op;
+ vnet_crypto_key_index_t ki;
+
+ vnet_crypto_op_init (op, lisp_key_type_to_crypto_op (key_id));
+ op->len = msg_len;
+ op->digest = MREG_DATA (map_reg_hdr);
+ op->src = (u8 *) map_reg_hdr;
+ op->digest_len = 0;
+ op->iv = 0;
+
+ ki = vnet_crypto_key_add (lcm->vlib_main,
+ lisp_key_type_to_crypto_alg (key_id), key,
+ vec_len (key));
+
+ op->key_index = ki;
+
+ vnet_crypto_process_ops (lcm->vlib_main, op, 1);
+ vnet_crypto_key_del (lcm->vlib_main, ki);
+
+ return 0;
+}
+
+static vlib_buffer_t *
+build_map_register (lisp_cp_main_t * lcm, ip_address_t * sloc,
+ ip_address_t * ms_ip, u64 * nonce_res, u8 want_map_notif,
+ mapping_t * records, lisp_key_type_t key_id, u8 * key,
+ u32 * bi_res)
+{
+ void *map_reg_hdr;
+ vlib_buffer_t *b;
+ u32 bi, auth_data_len = 0, msg_len = 0;
+ vlib_main_t *vm = lcm->vlib_main;
+
+ if (vlib_buffer_alloc (vm, &bi, 1) != 1)
+ {
+ clib_warning ("Can't allocate buffer for Map-Register!");
+ return 0;
+ }
+
+ b = vlib_get_buffer (vm, bi);
+
+ /* leave some space for the encap headers */
+ vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
+
+ auth_data_len = auth_data_len_by_key_id (key_id);
+ map_reg_hdr = lisp_msg_put_map_register (b, records, want_map_notif,
+ auth_data_len, nonce_res,
+ &msg_len);
+
+ update_map_register_auth_data (map_reg_hdr, key_id, key, auth_data_len,
+ msg_len);
+
+ /* push outer ip header */
+ pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
+ ms_ip, 1);
+
+ bi_res[0] = bi;
+ return b;
+}
+
+#define _(name) \
+static int \
+get_egress_map_ ##name## _ip (lisp_cp_main_t * lcm, ip_address_t * ip) \
+{ \
+ lisp_msmr_t *mr; \
+ while (lcm->do_map_ ## name ## _election \
+ | (0 == ip_fib_get_first_egress_ip_for_dst \
+ (lcm, &lcm->active_map_ ##name, ip))) \
+ { \
+ if (0 == elect_map_ ## name (lcm)) \
+ /* all map resolvers/servers are down */ \
+ { \
+ /* restart MR/MS checking by marking all of them up */ \
+ vec_foreach (mr, lcm->map_ ## name ## s) mr->is_down = 0; \
+ return -1; \
+ } \
+ } \
+ return 0; \
+}
+
+foreach_msmr
+#undef _
+/* CP output statistics */
+#define foreach_lisp_cp_output_error \
+_(MAP_REGISTERS_SENT, "map-registers sent") \
+_(MAP_REQUESTS_SENT, "map-requests sent") \
+_(RLOC_PROBES_SENT, "rloc-probes sent")
+static char *lisp_cp_output_error_strings[] = {
+#define _(sym,string) string,
+ foreach_lisp_cp_output_error
+#undef _
+};
+
+typedef enum
+{
+#define _(sym,str) LISP_CP_OUTPUT_ERROR_##sym,
+ foreach_lisp_cp_output_error
+#undef _
+ LISP_CP_OUTPUT_N_ERROR,
+} lisp_cp_output_error_t;
+
+static uword
+lisp_cp_output (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return 0;
+}
+
+/* placeholder node used only for statistics */
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (lisp_cp_output_node) = {
+ .function = lisp_cp_output,
+ .name = "lisp-cp-output",
+ .vector_size = sizeof (u32),
+ .format_trace = format_lisp_cp_input_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = LISP_CP_OUTPUT_N_ERROR,
+ .error_strings = lisp_cp_output_error_strings,
+
+ .n_next_nodes = LISP_CP_INPUT_N_NEXT,
+
+ .next_nodes = {
+ [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
+ },
+};
+/* *INDENT-ON* */
+
+static int
+send_rloc_probe (lisp_cp_main_t * lcm, gid_address_t * deid,
+ u32 local_locator_set_index, ip_address_t * sloc,
+ ip_address_t * rloc)
+{
+ locator_set_t *ls;
+ u32 bi;
+ vlib_buffer_t *b;
+ vlib_frame_t *f;
+ u64 nonce = 0;
+ u32 next_index, *to_next;
+ gid_address_t *itr_rlocs;
+
+ ls = pool_elt_at_index (lcm->locator_set_pool, local_locator_set_index);
+ itr_rlocs = build_itr_rloc_list (lcm, ls);
+
+ b = build_map_request (lcm, deid, sloc, rloc, itr_rlocs, &nonce, &bi);
+ vec_free (itr_rlocs);
+ if (!b)
+ return -1;
+
+ vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
+
+ next_index = (ip_addr_version (rloc) == AF_IP4) ?
+ ip4_lookup_node.index : ip6_lookup_node.index;
+
+ f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
+
+ /* Enqueue the packet */
+ to_next = vlib_frame_vector_args (f);
+ to_next[0] = bi;
+ f->n_vectors = 1;
+ vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
+
+ return 0;
+}
+
+static int
+send_rloc_probes (lisp_cp_main_t * lcm)
+{
+ u8 lprio = 0;
+ mapping_t *lm;
+ fwd_entry_t *e;
+ locator_pair_t *lp;
+ u32 si, rloc_probes_sent = 0;
+
+ /* *INDENT-OFF* */
+ pool_foreach (e, lcm->fwd_entry_pool,
+ {
+ if (vec_len (e->locator_pairs) == 0)
+ continue;
+
+ si = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &e->leid);
+ if (~0 == si)
+ {
+ clib_warning ("internal error: cannot find local eid %U in "
+ "map-cache!", format_gid_address, &e->leid);
+ continue;
+ }
+ lm = pool_elt_at_index (lcm->mapping_pool, si);
+
+ /* get the best (lowest) priority */
+ lprio = e->locator_pairs[0].priority;
+
+ /* send rloc-probe for pair(s) with the best remote locator priority */
+ vec_foreach (lp, e->locator_pairs)
+ {
+ if (lp->priority != lprio)
+ break;
+
+ /* get first remote locator */
+ send_rloc_probe (lcm, &e->reid, lm->locator_set_index, &lp->lcl_loc,
+ &lp->rmt_loc);
+ rloc_probes_sent++;
+ }
+ });
+ /* *INDENT-ON* */
+
+ vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
+ LISP_CP_OUTPUT_ERROR_RLOC_PROBES_SENT,
+ rloc_probes_sent);
+ return 0;
+}
+
+static int
+send_map_register (lisp_cp_main_t * lcm, u8 want_map_notif)
+{
+ pending_map_register_t *pmr;
+ u32 bi, map_registers_sent = 0;
+ vlib_buffer_t *b;
+ ip_address_t sloc;
+ vlib_frame_t *f;
+ u64 nonce = 0;
+ u32 next_index, *to_next;
+ mapping_t *records, *r, *group, *k;
+
+ if (get_egress_map_server_ip (lcm, &sloc) < 0)
+ return -1;
+
+ records = build_map_register_record_list (lcm);
+ if (!records)
+ return -1;
+
+ vec_foreach (r, records)
+ {
+ u8 *key = r->key;
+ u8 key_id = r->key_id;
+
+ if (!key)
+ continue; /* no secret key -> map-register cannot be sent */
+
+ group = 0;
+ vec_add1 (group, r[0]);
+
+ /* group mappings that share common key */
+ for (k = r + 1; k < vec_end (records); k++)
+ {
+ if (k->key_id != r->key_id)
+ continue;
+
+ if (vec_is_equal (k->key, r->key))
+ {
+ vec_add1 (group, k[0]);
+ k->key = 0; /* don't process this mapping again */
+ }
+ }
+
+ b = build_map_register (lcm, &sloc, &lcm->active_map_server, &nonce,
+ want_map_notif, group, key_id, key, &bi);
+ vec_free (group);
+ if (!b)
+ continue;
+
+ vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
+
+ next_index = (ip_addr_version (&lcm->active_map_server) == AF_IP4) ?
+ ip4_lookup_node.index : ip6_lookup_node.index;
+
+ f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
+
+ /* Enqueue the packet */
+ to_next = vlib_frame_vector_args (f);
+ to_next[0] = bi;
+ f->n_vectors = 1;
+ vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
+ map_registers_sent++;
+
+ pool_get (lcm->pending_map_registers_pool, pmr);
+ clib_memset (pmr, 0, sizeof (*pmr));
+ pmr->time_to_expire = PENDING_MREG_EXPIRATION_TIME;
+ hash_set (lcm->map_register_messages_by_nonce, nonce,
+ pmr - lcm->pending_map_registers_pool);
+ }
+ free_map_register_records (records);
+
+ vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
+ LISP_CP_OUTPUT_ERROR_MAP_REGISTERS_SENT,
+ map_registers_sent);
+
+ return 0;
+}
+
+#define send_encapsulated_map_request(lcm, seid, deid, smr) \
+ _send_encapsulated_map_request(lcm, seid, deid, smr, 0)
+
+#define resend_encapsulated_map_request(lcm, seid, deid, smr) \
+ _send_encapsulated_map_request(lcm, seid, deid, smr, 1)
+
+static int
+_send_encapsulated_map_request (lisp_cp_main_t * lcm,
+ gid_address_t * seid, gid_address_t * deid,
+ u8 is_smr_invoked, u8 is_resend)
+{
+ u32 next_index, bi = 0, *to_next, map_index;
+ vlib_buffer_t *b;
+ vlib_frame_t *f;
+ u64 nonce = 0;
+ locator_set_t *loc_set;
+ mapping_t *map;
+ pending_map_request_t *pmr, *duplicate_pmr = 0;
+ ip_address_t sloc;
+ u32 ls_index;
+
+ /* if there is already a pending request remember it */
+
+ /* *INDENT-OFF* */
+ pool_foreach(pmr, lcm->pending_map_requests_pool,
+ ({
+ if (!gid_address_cmp (&pmr->src, seid)
+ && !gid_address_cmp (&pmr->dst, deid))
+ {
+ duplicate_pmr = pmr;
+ break;
+ }
+ }));
+ /* *INDENT-ON* */
+
+ if (!is_resend && duplicate_pmr)
+ {
+ /* don't send the request if there is a pending map request already */
+ return 0;
+ }
+
+ u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE;
+
+ /* get locator-set for seid */
+ if (!pitr_mode && gid_address_type (deid) != GID_ADDR_NSH)
+ {
+ map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid);
+ if (map_index == ~0)
+ {
+ clib_warning ("No local mapping found in eid-table for %U!",
+ format_gid_address, seid);
+ return -1;
+ }
+
+ map = pool_elt_at_index (lcm->mapping_pool, map_index);
+
+ if (!map->local)
+ {
+ clib_warning
+ ("Mapping found for src eid %U is not marked as local!",
+ format_gid_address, seid);
+ return -1;
+ }
+ ls_index = map->locator_set_index;
+ }
+ else
+ {
+ if (pitr_mode)
+ {
+ if (lcm->pitr_map_index != ~0)
+ {
+ map =
+ pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
+ ls_index = map->locator_set_index;
+ }
+ else
+ {
+ return -1;
+ }
+ }
+ else
+ {
+ if (lcm->nsh_map_index == (u32) ~ 0)
+ {
+ clib_warning ("No locator-set defined for NSH!");
+ return -1;
+ }
+ else
+ {
+ map = pool_elt_at_index (lcm->mapping_pool, lcm->nsh_map_index);
+ ls_index = map->locator_set_index;
+ }
+ }
+ }
+
+ /* overwrite locator set if map-request itr-rlocs configured */
+ if (~0 != lcm->mreq_itr_rlocs)
+ {
+ ls_index = lcm->mreq_itr_rlocs;
+ }
+
+ loc_set = pool_elt_at_index (lcm->locator_set_pool, ls_index);
+
+ if (get_egress_map_resolver_ip (lcm, &sloc) < 0)
+ {
+ if (duplicate_pmr)
+ duplicate_pmr->to_be_removed = 1;
+ return -1;
+ }
+
+ /* build the encapsulated map request */
+ b = build_encapsulated_map_request (lcm, seid, deid, loc_set,
+ &lcm->active_map_resolver,
+ &sloc, is_smr_invoked, &nonce, &bi);
+
+ if (!b)
+ return -1;
+
+ /* set fib index to default and lookup node */
+ vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
+ next_index = (ip_addr_version (&lcm->active_map_resolver) == AF_IP4) ?
+ ip4_lookup_node.index : ip6_lookup_node.index;
+
+ f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
+
+ /* Enqueue the packet */
+ to_next = vlib_frame_vector_args (f);
+ to_next[0] = bi;
+ f->n_vectors = 1;
+ vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
+
+ vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
+ LISP_CP_OUTPUT_ERROR_MAP_REQUESTS_SENT, 1);
+
+ if (duplicate_pmr)
+ /* if there is a pending request already update it */
+ {
+ if (clib_fifo_elts (duplicate_pmr->nonces) >= PENDING_MREQ_QUEUE_LEN)
+ {
+ /* remove the oldest nonce */
+ u64 CLIB_UNUSED (tmp), *nonce_del;
+ nonce_del = clib_fifo_head (duplicate_pmr->nonces);
+ hash_unset (lcm->pending_map_requests_by_nonce, nonce_del[0]);
+ clib_fifo_sub1 (duplicate_pmr->nonces, tmp);
+ }
+
+ clib_fifo_add1 (duplicate_pmr->nonces, nonce);
+ hash_set (lcm->pending_map_requests_by_nonce, nonce,
+ duplicate_pmr - lcm->pending_map_requests_pool);
+ }
+ else
+ {
+ /* add map-request to pending requests table */
+ pool_get (lcm->pending_map_requests_pool, pmr);
+ clib_memset (pmr, 0, sizeof (*pmr));
+ gid_address_copy (&pmr->src, seid);
+ gid_address_copy (&pmr->dst, deid);
+ clib_fifo_add1 (pmr->nonces, nonce);
+ pmr->is_smr_invoked = is_smr_invoked;
+ reset_pending_mr_counters (pmr);
+ hash_set (lcm->pending_map_requests_by_nonce, nonce,
+ pmr - lcm->pending_map_requests_pool);
+ }
+
+ return 0;
+}
+
+static void
+get_src_and_dst_ip (void *hdr, ip_address_t * src, ip_address_t * dst)
+{
+ ip4_header_t *ip4 = hdr;
+ ip6_header_t *ip6;
+
+ if ((ip4->ip_version_and_header_length & 0xF0) == 0x40)
+ {
+ ip_address_set (src, &ip4->src_address, AF_IP4);
+ ip_address_set (dst, &ip4->dst_address, AF_IP4);
+ }
+ else
+ {
+ ip6 = hdr;
+ ip_address_set (src, &ip6->src_address, AF_IP6);
+ ip_address_set (dst, &ip6->dst_address, AF_IP6);
+ }
+}
+
+static u32
+lisp_get_vni_from_buffer_ip (lisp_cp_main_t * lcm, vlib_buffer_t * b,
+ u8 version)
+{
+ uword *vnip;
+ u32 vni = ~0, table_id = ~0;
+
+ table_id = fib_table_get_table_id_for_sw_if_index ((version ==
+ AF_IP4 ?
+ FIB_PROTOCOL_IP4 :
+ FIB_PROTOCOL_IP6),
+ vnet_buffer
+ (b)->sw_if_index
+ [VLIB_RX]);
+
+ vnip = hash_get (lcm->vni_by_table_id, table_id);
+ if (vnip)
+ vni = vnip[0];
+ else
+ clib_warning ("vrf %d is not mapped to any vni!", table_id);
+
+ return vni;
+}
+
+always_inline u32
+lisp_get_bd_from_buffer_eth (vlib_buffer_t * b)
+{
+ u32 sw_if_index0;
+
+ l2input_main_t *l2im = &l2input_main;
+ l2_input_config_t *config;
+ l2_bridge_domain_t *bd_config;
+
+ sw_if_index0 = vnet_buffer (b)->sw_if_index[VLIB_RX];
+ config = vec_elt_at_index (l2im->configs, sw_if_index0);
+ bd_config = vec_elt_at_index (l2im->bd_configs, config->bd_index);
+
+ return bd_config->bd_id;
+}
+
+always_inline u32
+lisp_get_vni_from_buffer_eth (lisp_cp_main_t * lcm, vlib_buffer_t * b)
+{
+ uword *vnip;
+ u32 vni = ~0;
+ u32 bd = lisp_get_bd_from_buffer_eth (b);
+
+ vnip = hash_get (lcm->vni_by_bd_id, bd);
+ if (vnip)
+ vni = vnip[0];
+ else
+ clib_warning ("bridge domain %d is not mapped to any vni!", bd);
+
+ return vni;
+}
+
+void
+get_src_and_dst_eids_from_buffer (lisp_cp_main_t * lcm, vlib_buffer_t * b,
+ gid_address_t * src, gid_address_t * dst,
+ u16 type)
+{
+ ethernet_header_t *eh;
+ u32 vni = 0;
+ icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
+
+ clib_memset (src, 0, sizeof (*src));
+ clib_memset (dst, 0, sizeof (*dst));
+
+ gid_address_type (dst) = GID_ADDR_NO_ADDRESS;
+ gid_address_type (src) = GID_ADDR_NO_ADDRESS;
+
+ if (LISP_AFI_IP == type || LISP_AFI_IP6 == type)
+ {
+ ip4_header_t *ip;
+ u8 version, preflen;
+
+ gid_address_type (src) = GID_ADDR_IP_PREFIX;
+ gid_address_type (dst) = GID_ADDR_IP_PREFIX;
+
+ ip = vlib_buffer_get_current (b);
+ get_src_and_dst_ip (ip, &gid_address_ip (src), &gid_address_ip (dst));
+
+ version = gid_address_ip_version (src);
+ preflen = ip_address_max_len (version);
+ gid_address_ippref_len (src) = preflen;
+ gid_address_ippref_len (dst) = preflen;
+
+ vni = lisp_get_vni_from_buffer_ip (lcm, b, version);
+ gid_address_vni (dst) = vni;
+ gid_address_vni (src) = vni;
+ }
+ else if (LISP_AFI_MAC == type)
+ {
+ ethernet_arp_header_t *ah;
+
+ eh = vlib_buffer_get_current (b);
+
+ if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_ARP)
+ {
+ ah = (ethernet_arp_header_t *) (((u8 *) eh) + sizeof (*eh));
+ gid_address_type (dst) = GID_ADDR_ARP;
+
+ if (clib_net_to_host_u16 (ah->opcode)
+ != ETHERNET_ARP_OPCODE_request)
+ {
+ clib_memset (&gid_address_arp_ndp_ip (dst), 0,
+ sizeof (ip_address_t));
+ ip_addr_version (&gid_address_arp_ndp_ip (dst)) = AF_IP4;
+ gid_address_arp_ndp_bd (dst) = ~0;
+ return;
+ }
+
+ gid_address_arp_bd (dst) = lisp_get_bd_from_buffer_eth (b);
+ clib_memcpy (&gid_address_arp_ip4 (dst),
+ &ah->ip4_over_ethernet[1].ip4, 4);
+ }
+ else
+ {
+ if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_IP6)
+ {
+ ip6_header_t *ip;
+ ip = (ip6_header_t *) (eh + 1);
+
+ if (IP_PROTOCOL_ICMP6 == ip->protocol)
+ {
+ icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
+ ndh = ip6_next_header (ip);
+ if (ndh->icmp.type == ICMP6_neighbor_solicitation)
+ {
+ gid_address_type (dst) = GID_ADDR_NDP;
+
+ /* check that source link layer address option is present */
+ opt = (void *) (ndh + 1);
+ if ((opt->header.type !=
+ ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address)
+ || (opt->header.n_data_u64s != 1))
+ {
+ clib_memset (&gid_address_arp_ndp_ip (dst), 0,
+ sizeof (ip_address_t));
+ ip_addr_version (&gid_address_arp_ndp_ip (dst)) =
+ AF_IP6;
+ gid_address_arp_ndp_bd (dst) = ~0;
+ gid_address_type (src) = GID_ADDR_NO_ADDRESS;
+ return;
+ }
+
+ gid_address_ndp_bd (dst) =
+ lisp_get_bd_from_buffer_eth (b);
+ ip_address_set (&gid_address_arp_ndp_ip (dst),
+ &ndh->target_address, AF_IP6);
+ return;
+ }
+ }
+ }
+
+ gid_address_type (src) = GID_ADDR_MAC;
+ gid_address_type (dst) = GID_ADDR_MAC;
+ mac_copy (&gid_address_mac (src), eh->src_address);
+ mac_copy (&gid_address_mac (dst), eh->dst_address);
+
+ /* get vni */
+ vni = lisp_get_vni_from_buffer_eth (lcm, b);
+
+ gid_address_vni (dst) = vni;
+ gid_address_vni (src) = vni;
+ }
+ }
+ else if (LISP_AFI_LCAF == type)
+ {
+ lisp_nsh_hdr_t *nh;
+ eh = vlib_buffer_get_current (b);
+
+ if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_NSH)
+ {
+ nh = (lisp_nsh_hdr_t *) (((u8 *) eh) + sizeof (*eh));
+ u32 spi = clib_net_to_host_u32 (nh->spi_si << 8);
+ u8 si = (u8) clib_net_to_host_u32 (nh->spi_si);
+ gid_address_nsh_spi (dst) = spi;
+ gid_address_nsh_si (dst) = si;
+
+ gid_address_type (dst) = GID_ADDR_NSH;
+ gid_address_type (src) = GID_ADDR_NSH;
+ }
+ }
+}
+
+static uword
+lisp_cp_lookup_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame, int overlay)
+{
+ icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
+ u32 *from, *to_next, di, si;
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ u32 next_index;
+ uword n_left_from, n_left_to_next;
+ vnet_main_t *vnm = vnet_get_main ();
+
+ from = vlib_frame_vector_args (from_frame);
+ n_left_from = from_frame->n_vectors;
+ next_index = node->cached_next_index;
+
+ while (n_left_from > 0)
+ {
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 pi0, sw_if_index0, next0;
+ u64 mac0;
+ vlib_buffer_t *b0;
+ gid_address_t src, dst;
+ ethernet_arp_header_t *arp0;
+ ethernet_header_t *eth0;
+ vnet_hw_interface_t *hw_if0;
+ ethernet_header_t *eh0;
+ icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
+ ip6_header_t *ip0;
+
+ pi0 = from[0];
+ from += 1;
+ n_left_from -= 1;
+ to_next[0] = pi0;
+ to_next += 1;
+ n_left_to_next -= 1;
+
+ b0 = vlib_get_buffer (vm, pi0);
+
+ /* src/dst eid pair */
+ get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst, overlay);
+
+ if (gid_address_type (&dst) == GID_ADDR_ARP)
+ {
+ mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
+ if (GID_LOOKUP_MISS_L2 == mac0)
+ goto drop;
+
+ /* send ARP reply */
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;
+
+ hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index0);
+
+ eth0 = vlib_buffer_get_current (b0);
+ arp0 = (ethernet_arp_header_t *) (((u8 *) eth0)
+ + sizeof (*eth0));
+ arp0->opcode = clib_host_to_net_u16 (ETHERNET_ARP_OPCODE_reply);
+ arp0->ip4_over_ethernet[1] = arp0->ip4_over_ethernet[0];
+ mac_address_from_u64 (&arp0->ip4_over_ethernet[0].mac, mac0);
+ clib_memcpy (&arp0->ip4_over_ethernet[0].ip4,
+ &gid_address_arp_ip4 (&dst), 4);
+
+ /* Hardware must be ethernet-like. */
+ ASSERT (vec_len (hw_if0->hw_address) == 6);
+
+ clib_memcpy (eth0->dst_address, eth0->src_address, 6);
+ clib_memcpy (eth0->src_address, hw_if0->hw_address, 6);
+
+ b0->error = node->errors[LISP_CP_LOOKUP_ERROR_ARP_REPLY_TX];
+ next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX;
+ goto enqueue;
+ }
+ else if (gid_address_type (&dst) == GID_ADDR_NDP)
+ {
+ mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
+ if (GID_LOOKUP_MISS_L2 == mac0)
+ goto drop;
+
+ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;
+
+ eh0 = vlib_buffer_get_current (b0);
+ ip0 = (ip6_header_t *) (eh0 + 1);
+ ndh = ip6_next_header (ip0);
+ int bogus_length;
+ ip0->dst_address = ip0->src_address;
+ ip0->src_address = ndh->target_address;
+ ip0->hop_limit = 255;
+ opt = (void *) (ndh + 1);
+ opt->header.type =
+ ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address;
+ clib_memcpy (opt->ethernet_address, (u8 *) & mac0, 6);
+ ndh->icmp.type = ICMP6_neighbor_advertisement;
+ ndh->advertisement_flags = clib_host_to_net_u32
+ (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED |
+ ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
+ ndh->icmp.checksum = 0;
+ ndh->icmp.checksum =
+ ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip0,
+ &bogus_length);
+ clib_memcpy (eh0->dst_address, eh0->src_address, 6);
+ clib_memcpy (eh0->src_address, (u8 *) & mac0, 6);
+ b0->error =
+ node->errors
+ [LISP_CP_LOOKUP_ERROR_NDP_NEIGHBOR_ADVERTISEMENT_TX];
+ next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX;
+ goto enqueue;
+ }
+
+ /* if we have remote mapping for destination already in map-cache
+ add forwarding tunnel directly. If not send a map-request */
+ di = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid, &dst,
+ &src);
+ if (~0 != di)
+ {
+ mapping_t *m = vec_elt_at_index (lcm->mapping_pool, di);
+ /* send a map-request also in case of negative mapping entry
+ with corresponding action */
+ if (m->action == LISP_SEND_MAP_REQUEST)
+ {
+ /* send map-request */
+ queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
+ 0 /* is_resend */ );
+ }
+ else
+ {
+ if (GID_ADDR_NSH != gid_address_type (&dst))
+ {
+ si = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
+ &src);
+ }
+ else
+ si = lcm->nsh_map_index;
+
+ if (~0 != si)
+ {
+ dp_add_fwd_entry_from_mt (si, di);
+ }
+ }
+ }
+ else
+ {
+ /* send map-request */
+ queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
+ 0 /* is_resend */ );
+ }
+
+ drop:
+ b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP];
+ next0 = LISP_CP_LOOKUP_NEXT_DROP;
+ enqueue:
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0,
+ sizeof (*tr));
+
+ clib_memset (tr, 0, sizeof (*tr));
+ if ((gid_address_type (&dst) == GID_ADDR_NDP) ||
+ (gid_address_type (&dst) == GID_ADDR_ARP))
+ clib_memcpy (&tr->dst_eid, &dst, sizeof (gid_address_t));
+ else
+ gid_address_copy (&tr->dst_eid, &dst);
+ ip_address_copy (&tr->map_resolver_ip,
+ &lcm->active_map_resolver);
+ }
+ gid_address_free (&dst);
+ gid_address_free (&src);
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+ to_next,
+ n_left_to_next, pi0, next0);
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+ return from_frame->n_vectors;
+}
+
+static uword
+lisp_cp_lookup_ip4 (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * from_frame)
+{
+ return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP));
+}
+
+static uword
+lisp_cp_lookup_ip6 (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * from_frame)
+{
+ return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP6));
+}
+
+static uword
+lisp_cp_lookup_l2 (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * from_frame)
+{
+ return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_MAC));
+}
+
+static uword
+lisp_cp_lookup_nsh (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * from_frame)
+{
+ /* TODO decide if NSH should be propagated as LCAF or not */
+ return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_LCAF));
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (lisp_cp_lookup_ip4_node) = {
+ .function = lisp_cp_lookup_ip4,
+ .name = "lisp-cp-lookup-ip4",
+ .vector_size = sizeof (u32),
+ .format_trace = format_lisp_cp_lookup_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = LISP_CP_LOOKUP_N_ERROR,
+ .error_strings = lisp_cp_lookup_error_strings,
+
+ .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
+
+ .next_nodes = {
+ [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
+ [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
+ },
+};
+/* *INDENT-ON* */
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (lisp_cp_lookup_ip6_node) = {
+ .function = lisp_cp_lookup_ip6,
+ .name = "lisp-cp-lookup-ip6",
+ .vector_size = sizeof (u32),
+ .format_trace = format_lisp_cp_lookup_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = LISP_CP_LOOKUP_N_ERROR,
+ .error_strings = lisp_cp_lookup_error_strings,
+
+ .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
+
+ .next_nodes = {
+ [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
+ [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
+ },
+};
+/* *INDENT-ON* */
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (lisp_cp_lookup_l2_node) = {
+ .function = lisp_cp_lookup_l2,
+ .name = "lisp-cp-lookup-l2",
+ .vector_size = sizeof (u32),
+ .format_trace = format_lisp_cp_lookup_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = LISP_CP_LOOKUP_N_ERROR,
+ .error_strings = lisp_cp_lookup_error_strings,
+
+ .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
+
+ .next_nodes = {
+ [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
+ [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
+ },
+};
+/* *INDENT-ON* */
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (lisp_cp_lookup_nsh_node) = {
+ .function = lisp_cp_lookup_nsh,
+ .name = "lisp-cp-lookup-nsh",
+ .vector_size = sizeof (u32),
+ .format_trace = format_lisp_cp_lookup_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = LISP_CP_LOOKUP_N_ERROR,
+ .error_strings = lisp_cp_lookup_error_strings,
+
+ .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
+
+ .next_nodes = {
+ [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
+ [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
+ },
+};
+/* *INDENT-ON* */
+
+/* lisp_cp_input statistics */
+#define foreach_lisp_cp_input_error \
+_(DROP, "drop") \
+_(RLOC_PROBE_REQ_RECEIVED, "rloc-probe requests received") \
+_(RLOC_PROBE_REP_RECEIVED, "rloc-probe replies received") \
+_(MAP_NOTIFIES_RECEIVED, "map-notifies received") \
+_(MAP_REPLIES_RECEIVED, "map-replies received")
+
+static char *lisp_cp_input_error_strings[] = {
+#define _(sym,string) string,
+ foreach_lisp_cp_input_error
+#undef _
+};
+
+typedef enum
+{
+#define _(sym,str) LISP_CP_INPUT_ERROR_##sym,
+ foreach_lisp_cp_input_error
+#undef _
+ LISP_CP_INPUT_N_ERROR,
+} lisp_cp_input_error_t;
+
+typedef struct
+{
+ gid_address_t dst_eid;
+ ip4_address_t map_resolver_ip;
+} lisp_cp_input_trace_t;
+
+u8 *
+format_lisp_cp_input_trace (u8 * s, va_list * args)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ CLIB_UNUSED (lisp_cp_input_trace_t * t) =
+ va_arg (*args, lisp_cp_input_trace_t *);
+
+ s = format (s, "LISP-CP-INPUT: TODO");
+ return s;
+}
+
+static void
+remove_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
+{
+ mapping_t *m;
+ vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
+ clib_memset (adj_args, 0, sizeof (adj_args[0]));
+
+ m = pool_elt_at_index (lcm->mapping_pool, mi);
+
+ gid_address_copy (&adj_args->reid, &m->eid);
+ adj_args->is_add = 0;
+ if (vnet_lisp_add_del_adjacency (adj_args))
+ clib_warning ("failed to del adjacency!");
+
+ TW (tw_timer_stop) (&lcm->wheel, m->timer_handle);
+ vnet_lisp_del_mapping (&m->eid, NULL);
+}
+
+static void
+mapping_start_expiration_timer (lisp_cp_main_t * lcm, u32 mi,
+ f64 expiration_time)
+{
+ mapping_t *m;
+ u64 now = clib_cpu_time_now ();
+ u64 cpu_cps = lcm->vlib_main->clib_time.clocks_per_second;
+ u64 exp_clock_time = now + expiration_time * cpu_cps;
+
+ m = pool_elt_at_index (lcm->mapping_pool, mi);
+
+ m->timer_set = 1;
+ m->timer_handle = TW (tw_timer_start) (&lcm->wheel, mi, 0, exp_clock_time);
+}
+
+static void
+process_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
+{
+ int rv;
+ vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
+ mapping_t *m = pool_elt_at_index (lcm->mapping_pool, mi);
+ uword *fei;
+ fwd_entry_t *fe;
+ vlib_counter_t c;
+ u8 have_stats = 0;
+
+ if (m->delete_after_expiration)
+ {
+ remove_expired_mapping (lcm, mi);
+ return;
+ }
+
+ fei = hash_get (lcm->fwd_entry_by_mapping_index, mi);
+ if (!fei)
+ return;
+
+ fe = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
+
+ clib_memset (a, 0, sizeof (*a));
+ a->rmt_eid = fe->reid;
+ if (fe->is_src_dst)
+ a->lcl_eid = fe->leid;
+ a->vni = gid_address_vni (&fe->reid);
+
+ rv = vnet_lisp_gpe_get_fwd_stats (a, &c);
+ if (0 == rv)
+ have_stats = 1;
+
+ if (m->almost_expired)
+ {
+ m->almost_expired = 0; /* reset flag */
+ if (have_stats)
+ {
+ if (m->packets != c.packets)
+ {
+ /* mapping is in use, re-fetch */
+ map_request_args_t mr_args;
+ clib_memset (&mr_args, 0, sizeof (mr_args));
+ mr_args.seid = fe->leid;
+ mr_args.deid = fe->reid;
+
+ send_map_request_thread_fn (&mr_args);
+ }
+ else
+ remove_expired_mapping (lcm, mi);
+ }
+ else
+ remove_expired_mapping (lcm, mi);
+ }
+ else
+ {
+ m->almost_expired = 1;
+ mapping_start_expiration_timer (lcm, mi, TIME_UNTIL_REFETCH_OR_DELETE);
+
+ if (have_stats)
+ /* save counter */
+ m->packets = c.packets;
+ else
+ m->delete_after_expiration = 1;
+ }
+}
+
+static void
+map_records_arg_free (map_records_arg_t * a)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ mapping_t *m;
+ vec_foreach (m, a->mappings)
+ {
+ vec_free (m->locators);
+ gid_address_free (&m->eid);
+ }
+ pool_put (lcm->map_records_args_pool[vlib_get_thread_index ()], a);
+}
+
+void *
+process_map_reply (map_records_arg_t * a)
+{
+ mapping_t *m;
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ u32 dst_map_index = 0;
+ pending_map_request_t *pmr;
+ u64 *noncep;
+ uword *pmr_index;
+ u8 is_changed = 0;
+
+ if (a->is_rloc_probe)
+ goto done;
+
+ /* Check pending requests table and nonce */
+ pmr_index = hash_get (lcm->pending_map_requests_by_nonce, a->nonce);
+ if (!pmr_index)
+ {
+ clib_warning ("No pending map-request entry with nonce %lu!", a->nonce);
+ goto done;
+ }
+ pmr = pool_elt_at_index (lcm->pending_map_requests_pool, pmr_index[0]);
+
+ vec_foreach (m, a->mappings)
+ {
+ vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
+ clib_memset (m_args, 0, sizeof (m_args[0]));
+ gid_address_copy (&m_args->eid, &m->eid);
+ m_args->action = m->action;
+ m_args->authoritative = m->authoritative;
+ m_args->ttl = m->ttl;
+ m_args->is_static = 0;
+
+ /* insert/update mappings cache */
+ vnet_lisp_add_mapping (m_args, m->locators, &dst_map_index, &is_changed);
+
+ if (dst_map_index == (u32) ~ 0)
+ continue;
+
+ if (is_changed)
+ {
+ /* try to program forwarding only if mapping saved or updated */
+ vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
+ clib_memset (adj_args, 0, sizeof (adj_args[0]));
+
+ gid_address_copy (&adj_args->leid, &pmr->src);
+ gid_address_copy (&adj_args->reid, &m->eid);
+ adj_args->is_add = 1;
+
+ if (vnet_lisp_add_del_adjacency (adj_args))
+ clib_warning ("failed to add adjacency!");
+ }
+
+ if ((u32) ~ 0 != m->ttl)
+ mapping_start_expiration_timer (lcm, dst_map_index,
+ (m->ttl == 0) ? 0 : MAPPING_TIMEOUT);
+ }
+
+ /* remove pending map request entry */
+
+ /* *INDENT-OFF* */
+ clib_fifo_foreach (noncep, pmr->nonces, ({
+ hash_unset(lcm->pending_map_requests_by_nonce, noncep[0]);
+ }));
+ /* *INDENT-ON* */
+
+ clib_fifo_free (pmr->nonces);
+ pool_put (lcm->pending_map_requests_pool, pmr);
+
+done:
+ a->is_free = 1;
+ return 0;
+}
+
+static int
+is_auth_data_valid (map_notify_hdr_t * h, u32 msg_len,
+ lisp_key_type_t key_id, u8 * key)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ u8 *auth_data = 0;
+ u16 auth_data_len;
+ int result;
+ vnet_crypto_op_t _op, *op = &_op;
+ vnet_crypto_key_index_t ki;
+ u8 out[EVP_MAX_MD_SIZE] = { 0, };
+
+ auth_data_len = auth_data_len_by_key_id (key_id);
+ if ((u16) ~ 0 == auth_data_len)
+ {
+ clib_warning ("invalid length for key_id %d!", key_id);
+ return 0;
+ }
+
+ /* save auth data */
+ vec_validate (auth_data, auth_data_len - 1);
+ clib_memcpy (auth_data, MNOTIFY_DATA (h), auth_data_len);
+
+ /* clear auth data */
+ clib_memset (MNOTIFY_DATA (h), 0, auth_data_len);
+
+ vnet_crypto_op_init (op, lisp_key_type_to_crypto_op (key_id));
+ op->len = msg_len;
+ op->digest = out;
+ op->src = (u8 *) h;
+ op->digest_len = 0;
+ op->iv = 0;
+
+ ki = vnet_crypto_key_add (lcm->vlib_main,
+ lisp_key_type_to_crypto_alg (key_id), key,
+ vec_len (key));
+
+ op->key_index = ki;
+
+ vnet_crypto_process_ops (lcm->vlib_main, op, 1);
+ vnet_crypto_key_del (lcm->vlib_main, ki);
+
+ result = memcmp (out, auth_data, auth_data_len);
+
+ vec_free (auth_data);
+
+ return !result;
+}
+
+static void
+process_map_notify (map_records_arg_t * a)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ uword *pmr_index;
+
+ pmr_index = hash_get (lcm->map_register_messages_by_nonce, a->nonce);
+ if (!pmr_index)
+ {
+ clib_warning ("No pending map-register entry with nonce %lu!",
+ a->nonce);
+ return;
+ }
+
+ a->is_free = 1;
+ pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
+ hash_unset (lcm->map_register_messages_by_nonce, a->nonce);
+
+ /* reset map-notify counter */
+ lcm->expired_map_registers = 0;
+}
+
+static mapping_t *
+get_mapping (lisp_cp_main_t * lcm, gid_address_t * e)
+{
+ u32 mi;
+
+ mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, e);
+ if (~0 == mi)
+ {
+ clib_warning ("eid %U not found in map-cache!", unformat_gid_address,
+ e);
+ return 0;
+ }
+ return pool_elt_at_index (lcm->mapping_pool, mi);
+}
+
+/**
+ * When map-notify is received it is necessary that all EIDs in the record
+ * list share common key. The key is then used to verify authentication
+ * data in map-notify message.
+ */
+static int
+map_record_integrity_check (lisp_cp_main_t * lcm, mapping_t * maps,
+ u32 key_id, u8 ** key_out)
+{
+ u32 i, len = vec_len (maps);
+ mapping_t *m;
+
+ /* get key of the first mapping */
+ m = get_mapping (lcm, &maps[0].eid);
+ if (!m || !m->key)
+ return -1;
+
+ key_out[0] = m->key;
+
+ for (i = 1; i < len; i++)
+ {
+ m = get_mapping (lcm, &maps[i].eid);
+ if (!m || !m->key)
+ return -1;
+
+ if (key_id != m->key_id || vec_cmp (m->key, key_out[0]))
+ {
+ clib_warning ("keys does not match! %v, %v", key_out[0], m->key);
+ return -1;
+ }
+ }
+ return 0;
+}
+
+static int
+parse_map_records (vlib_buffer_t * b, map_records_arg_t * a, u8 count)
+{
+ locator_t *locators = 0;
+ u32 i, len;
+ gid_address_t deid;
+ mapping_t m;
+ locator_t *loc;
+
+ clib_memset (&m, 0, sizeof (m));
+
+ /* parse record eid */
+ for (i = 0; i < count; i++)
+ {
+ locators = 0;
+ len = lisp_msg_parse_mapping_record (b, &deid, &locators, NULL);
+ if (len == ~0)
+ {
+ clib_warning ("Failed to parse mapping record!");
+ vec_foreach (loc, locators) locator_free (loc);
+ vec_free (locators);
+ return -1;
+ }
+
+ m.locators = locators;
+ gid_address_copy (&m.eid, &deid);
+ vec_add1 (a->mappings, m);
+ }
+
+ return 0;
+}
+
+static map_records_arg_t *
+map_record_args_get ()
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ map_records_arg_t *rec;
+
+ /* Cleanup first */
+ /* *INDENT-OFF* */
+ pool_foreach (rec, lcm->map_records_args_pool[vlib_get_thread_index()], ({
+ if (rec->is_free)
+ map_records_arg_free (rec);
+ }));
+ /* *INDENT-ON* */
+
+ pool_get (lcm->map_records_args_pool[vlib_get_thread_index ()], rec);
+ return rec;
+}
+
+static map_records_arg_t *
+parse_map_notify (vlib_buffer_t * b)
+{
+ int rc = 0;
+ map_notify_hdr_t *mnotif_hdr;
+ lisp_key_type_t key_id;
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ u8 *key = 0;
+ gid_address_t deid;
+ u16 auth_data_len = 0;
+ u8 record_count;
+ map_records_arg_t *a;
+
+ a = map_record_args_get ();
+ clib_memset (a, 0, sizeof (*a));
+ mnotif_hdr = vlib_buffer_get_current (b);
+ vlib_buffer_pull (b, sizeof (*mnotif_hdr));
+ clib_memset (&deid, 0, sizeof (deid));
+
+ a->nonce = MNOTIFY_NONCE (mnotif_hdr);
+ key_id = clib_net_to_host_u16 (MNOTIFY_KEY_ID (mnotif_hdr));
+ auth_data_len = auth_data_len_by_key_id (key_id);
+
+ /* advance buffer by authentication data */
+ vlib_buffer_pull (b, auth_data_len);
+
+ record_count = MNOTIFY_REC_COUNT (mnotif_hdr);
+ rc = parse_map_records (b, a, record_count);
+ if (rc != 0)
+ {
+ map_records_arg_free (a);
+ return 0;
+ }
+
+ rc = map_record_integrity_check (lcm, a->mappings, key_id, &key);
+ if (rc != 0)
+ {
+ map_records_arg_free (a);
+ return 0;
+ }
+
+ /* verify authentication data */
+ if (!is_auth_data_valid (mnotif_hdr, vlib_buffer_get_tail (b)
+ - (u8 *) mnotif_hdr, key_id, key))
+ {
+ clib_warning ("Map-notify auth data verification failed for nonce "
+ "0x%lx!", a->nonce);
+ map_records_arg_free (a);
+ return 0;
+ }
+ return a;
+}
+
+static vlib_buffer_t *
+build_map_reply (lisp_cp_main_t * lcm, ip_address_t * sloc,
+ ip_address_t * dst, u64 nonce, u8 probe_bit,
+ mapping_t * records, u16 dst_port, u32 * bi_res)
+{
+ vlib_buffer_t *b;
+ u32 bi;
+ vlib_main_t *vm = lcm->vlib_main;
+
+ if (vlib_buffer_alloc (vm, &bi, 1) != 1)
+ {
+ clib_warning ("Can't allocate buffer for Map-Register!");
+ return 0;
+ }
+
+ b = vlib_get_buffer (vm, bi);
+
+ /* leave some space for the encap headers */
+ vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
+
+ lisp_msg_put_map_reply (b, records, nonce, probe_bit);
+
+ /* push outer ip header */
+ pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, dst_port, sloc, dst, 1);
+
+ bi_res[0] = bi;
+ return b;
+}
+
+static int
+send_map_reply (lisp_cp_main_t * lcm, u32 mi, ip_address_t * dst,
+ u8 probe_bit, u64 nonce, u16 dst_port,
+ ip_address_t * probed_loc)
+{
+ ip_address_t src;
+ u32 bi;
+ vlib_buffer_t *b;
+ vlib_frame_t *f;
+ u32 next_index, *to_next;
+ mapping_t *records = 0, *m;
+
+ m = pool_elt_at_index (lcm->mapping_pool, mi);
+ if (!m)
+ return -1;
+
+ vec_add1 (records, m[0]);
+ add_locators (lcm, &records[0], m->locator_set_index, probed_loc);
+ clib_memset (&src, 0, sizeof (src));
+
+ if (!ip_fib_get_first_egress_ip_for_dst (lcm, dst, &src))
+ {
+ clib_warning ("can't find interface address for %U", format_ip_address,
+ dst);
+ return -1;
+ }
+
+ b = build_map_reply (lcm, &src, dst, nonce, probe_bit, records, dst_port,
+ &bi);
+ if (!b)
+ return -1;
+ free_map_register_records (records);
+
+ vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
+ next_index = (ip_addr_version (&lcm->active_map_resolver) == AF_IP4) ?
+ ip4_lookup_node.index : ip6_lookup_node.index;
+
+ f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
+
+ /* Enqueue the packet */
+ to_next = vlib_frame_vector_args (f);
+ to_next[0] = bi;
+ f->n_vectors = 1;
+ vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
+ return 0;
+}
+
+static void
+find_ip_header (vlib_buffer_t * b, u8 ** ip_hdr)
+{
+ const i32 start = vnet_buffer (b)->l3_hdr_offset;
+ if (start < 0 && start < -sizeof (b->pre_data))
+ {
+ *ip_hdr = 0;
+ return;
+ }
+
+ *ip_hdr = b->data + start;
+ if ((u8 *) * ip_hdr > (u8 *) vlib_buffer_get_current (b))
+ *ip_hdr = 0;
+}
+
+void
+process_map_request (vlib_main_t * vm, vlib_node_runtime_t * node,
+ lisp_cp_main_t * lcm, vlib_buffer_t * b)
+{
+ u8 *ip_hdr = 0;
+ ip_address_t *dst_loc = 0, probed_loc, src_loc;
+ mapping_t m;
+ map_request_hdr_t *mreq_hdr;
+ gid_address_t src, dst;
+ u64 nonce;
+ u32 i, len = 0, rloc_probe_recv = 0;
+ gid_address_t *itr_rlocs = 0;
+
+ mreq_hdr = vlib_buffer_get_current (b);
+ if (!MREQ_SMR (mreq_hdr) && !MREQ_RLOC_PROBE (mreq_hdr))
+ {
+ clib_warning
+ ("Only SMR Map-Requests and RLOC probe supported for now!");
+ return;
+ }
+
+ vlib_buffer_pull (b, sizeof (*mreq_hdr));
+ nonce = MREQ_NONCE (mreq_hdr);
+
+ /* parse src eid */
+ len = lisp_msg_parse_addr (b, &src);
+ if (len == ~0)
+ return;
+
+ len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs,
+ MREQ_ITR_RLOC_COUNT (mreq_hdr) + 1);
+ if (len == ~0)
+ goto done;
+
+ /* parse eid records and send SMR-invoked map-requests */
+ for (i = 0; i < MREQ_REC_COUNT (mreq_hdr); i++)
+ {
+ clib_memset (&dst, 0, sizeof (dst));
+ len = lisp_msg_parse_eid_rec (b, &dst);
+ if (len == ~0)
+ {
+ clib_warning ("Can't parse map-request EID-record");
+ goto done;
+ }
+
+ if (MREQ_SMR (mreq_hdr))
+ {
+ /* send SMR-invoked map-requests */
+ queue_map_request (&dst, &src, 1 /* invoked */ , 0 /* resend */ );
+ }
+ else if (MREQ_RLOC_PROBE (mreq_hdr))
+ {
+ find_ip_header (b, &ip_hdr);
+ if (!ip_hdr)
+ {
+ clib_warning ("Cannot find the IP header!");
+ goto done;
+ }
+ rloc_probe_recv++;
+ clib_memset (&m, 0, sizeof (m));
+ u32 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
+
+ // TODO: select best locator; for now use the first one
+ dst_loc = &gid_address_ip (&itr_rlocs[0]);
+
+ /* get src/dst IP addresses */
+ get_src_and_dst_ip (ip_hdr, &src_loc, &probed_loc);
+
+ // TODO get source port from buffer
+ u16 src_port = LISP_CONTROL_PORT;
+
+ send_map_reply (lcm, mi, dst_loc, 1 /* probe-bit */ , nonce,
+ src_port, &probed_loc);
+ }
+ }
+
+done:
+ vlib_node_increment_counter (vm, node->node_index,
+ LISP_CP_INPUT_ERROR_RLOC_PROBE_REQ_RECEIVED,
+ rloc_probe_recv);
+ vec_free (itr_rlocs);
+}
+
+map_records_arg_t *
+parse_map_reply (vlib_buffer_t * b)
+{
+ locator_t probed;
+ gid_address_t deid;
+ void *h;
+ u32 i, len = 0;
+ mapping_t m;
+ map_reply_hdr_t *mrep_hdr;
+ map_records_arg_t *a;
+
+ a = map_record_args_get ();
+ clib_memset (a, 0, sizeof (*a));
+
+ locator_t *locators;
+
+ mrep_hdr = vlib_buffer_get_current (b);
+ a->nonce = MREP_NONCE (mrep_hdr);
+ a->is_rloc_probe = MREP_RLOC_PROBE (mrep_hdr);
+ if (!vlib_buffer_has_space (b, sizeof (*mrep_hdr)))
+ {
+ map_records_arg_free (a);
+ return 0;
+ }
+ vlib_buffer_pull (b, sizeof (*mrep_hdr));
+
+ for (i = 0; i < MREP_REC_COUNT (mrep_hdr); i++)
+ {
+ clib_memset (&m, 0, sizeof (m));
+ locators = 0;
+ h = vlib_buffer_get_current (b);
+
+ m.ttl = clib_net_to_host_u32 (MAP_REC_TTL (h));
+ m.action = MAP_REC_ACTION (h);
+ m.authoritative = MAP_REC_AUTH (h);
+
+ len = lisp_msg_parse_mapping_record (b, &deid, &locators, &probed);
+ if (len == ~0)
+ {
+ clib_warning ("Failed to parse mapping record!");
+ map_records_arg_free (a);
+ return 0;
+ }
+
+ m.locators = locators;
+ gid_address_copy (&m.eid, &deid);
+ vec_add1 (a->mappings, m);
+ }
+ return a;
+}
+
+static void
+queue_map_reply_for_processing (map_records_arg_t * a)
+{
+ vl_api_rpc_call_main_thread (process_map_reply, (u8 *) a, sizeof (*a));
+}
+
+static void
+queue_map_notify_for_processing (map_records_arg_t * a)
+{
+ vl_api_rpc_call_main_thread (process_map_notify, (u8 *) a, sizeof (a[0]));
+}
+
+static uword
+lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ u32 n_left_from, *from, *to_next_drop, rloc_probe_rep_recv = 0,
+ map_notifies_recv = 0;
+ lisp_msg_type_e type;
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ map_records_arg_t *a;
+
+ from = vlib_frame_vector_args (from_frame);
+ n_left_from = from_frame->n_vectors;
+
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next_drop;
+
+ vlib_get_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
+ to_next_drop, n_left_to_next_drop);
+ while (n_left_from > 0 && n_left_to_next_drop > 0)
+ {
+ u32 bi0;
+ vlib_buffer_t *b0;
+
+ bi0 = from[0];
+ from += 1;
+ n_left_from -= 1;
+ to_next_drop[0] = bi0;
+ to_next_drop += 1;
+ n_left_to_next_drop -= 1;
+
+ b0 = vlib_get_buffer (vm, bi0);
+
+ type = lisp_msg_type (vlib_buffer_get_current (b0));
+ switch (type)
+ {
+ case LISP_MAP_REPLY:
+ a = parse_map_reply (b0);
+ if (a)
+ {
+ if (a->is_rloc_probe)
+ rloc_probe_rep_recv++;
+ queue_map_reply_for_processing (a);
+ }
+ break;
+ case LISP_MAP_REQUEST:
+ process_map_request (vm, node, lcm, b0);
+ break;
+ case LISP_MAP_NOTIFY:
+ a = parse_map_notify (b0);
+ if (a)
+ {
+ map_notifies_recv++;
+ queue_map_notify_for_processing (a);
+ }
+ break;
+ default:
+ clib_warning ("Unsupported LISP message type %d", type);
+ break;
+ }
+
+ b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP];
+
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+
+ }
+ }
+
+ vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
+ n_left_to_next_drop);
+ }
+ vlib_node_increment_counter (vm, node->node_index,
+ LISP_CP_INPUT_ERROR_RLOC_PROBE_REP_RECEIVED,
+ rloc_probe_rep_recv);
+ vlib_node_increment_counter (vm, node->node_index,
+ LISP_CP_INPUT_ERROR_MAP_NOTIFIES_RECEIVED,
+ map_notifies_recv);
+ return from_frame->n_vectors;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (lisp_cp_input_node) = {
+ .function = lisp_cp_input,
+ .name = "lisp-cp-input",
+ .vector_size = sizeof (u32),
+ .format_trace = format_lisp_cp_input_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = LISP_CP_INPUT_N_ERROR,
+ .error_strings = lisp_cp_input_error_strings,
+
+ .n_next_nodes = LISP_CP_INPUT_N_NEXT,
+
+ .next_nodes = {
+ [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
+ },
+};
+/* *INDENT-ON* */
+
+clib_error_t *
+lisp_cp_init (vlib_main_t * vm)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ clib_error_t *error = 0;
+ vlib_thread_main_t *vtm = vlib_get_thread_main ();
+ u32 num_threads;
+
+ if ((error = vlib_call_init_function (vm, lisp_gpe_init)))
+ return error;
+
+ lcm->im4 = &ip4_main;
+ lcm->im6 = &ip6_main;
+ lcm->vlib_main = vm;
+ lcm->vnet_main = vnet_get_main ();
+ lcm->mreq_itr_rlocs = ~0;
+ lcm->flags = 0;
+ lcm->pitr_map_index = ~0;
+ lcm->petr_map_index = ~0;
+ clib_memset (&lcm->active_map_resolver, 0,
+ sizeof (lcm->active_map_resolver));
+ clib_memset (&lcm->active_map_server, 0, sizeof (lcm->active_map_server));
+
+ gid_dictionary_init (&lcm->mapping_index_by_gid);
+ lcm->do_map_resolver_election = 1;
+ lcm->do_map_server_election = 1;
+ lcm->map_request_mode = MR_MODE_DST_ONLY;
+
+ num_threads = 1 /* main thread */ + vtm->n_threads;
+ vec_validate (lcm->map_records_args_pool, num_threads - 1);
+
+ /* default vrf mapped to vni 0 */
+ hash_set (lcm->table_id_by_vni, 0, 0);
+ hash_set (lcm->vni_by_table_id, 0, 0);
+
+ TW (tw_timer_wheel_init) (&lcm->wheel, 0 /* no callback */ ,
+ 1e-3 /* timer period 1ms */ ,
+ ~0 /* max expirations per call */ );
+ lcm->nsh_map_index = ~0;
+ lcm->map_register_ttl = MAP_REGISTER_DEFAULT_TTL;
+ lcm->max_expired_map_registers = MAX_EXPIRED_MAP_REGISTERS_DEFAULT;
+ lcm->expired_map_registers = 0;
+ lcm->transport_protocol = LISP_TRANSPORT_PROTOCOL_UDP;
+ lcm->flags |= LISP_FLAG_XTR_MODE;
+ return 0;
+}
+
+static int
+lisp_stats_api_fill (lisp_cp_main_t * lcm, lisp_gpe_main_t * lgm,
+ lisp_api_stats_t * stat, lisp_stats_key_t * key,
+ u32 stats_index)
+{
+ vlib_counter_t v;
+ vlib_combined_counter_main_t *cm = &lgm->counters;
+ lisp_gpe_fwd_entry_key_t fwd_key;
+ const lisp_gpe_tunnel_t *lgt;
+ fwd_entry_t *fe;
+
+ clib_memset (stat, 0, sizeof (*stat));
+ clib_memset (&fwd_key, 0, sizeof (fwd_key));
+
+ fe = pool_elt_at_index (lcm->fwd_entry_pool, key->fwd_entry_index);
+ ASSERT (fe != 0);
+
+ gid_to_dp_address (&fe->reid, &stat->deid);
+ gid_to_dp_address (&fe->leid, &stat->seid);
+ stat->vni = gid_address_vni (&fe->reid);
+
+ lgt = lisp_gpe_tunnel_get (key->tunnel_index);
+ stat->loc_rloc = lgt->key->lcl;
+ stat->rmt_rloc = lgt->key->rmt;
+
+ vlib_get_combined_counter (cm, stats_index, &v);
+ stat->counters = v;
+ return 1;
+}
+
+lisp_api_stats_t *
+vnet_lisp_get_stats (void)
+{
+ lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ lisp_api_stats_t *stats = 0, stat;
+ lisp_stats_key_t *key;
+ u32 index;
+
+ /* *INDENT-OFF* */
+ hash_foreach_mem (key, index, lgm->lisp_stats_index_by_key,
+ {
+ if (lisp_stats_api_fill (lcm, lgm, &stat, key, index))
+ vec_add1 (stats, stat);
+ });
+ /* *INDENT-ON* */
+
+ return stats;
+}
+
+static void *
+send_map_request_thread_fn (void *arg)
+{
+ map_request_args_t *a = arg;
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+
+ if (a->is_resend)
+ resend_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
+ else
+ send_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
+
+ return 0;
+}
+
+static int
+queue_map_request (gid_address_t * seid, gid_address_t * deid,
+ u8 smr_invoked, u8 is_resend)
+{
+ map_request_args_t a;
+
+ a.is_resend = is_resend;
+ gid_address_copy (&a.seid, seid);
+ gid_address_copy (&a.deid, deid);
+ a.smr_invoked = smr_invoked;
+
+ vl_api_rpc_call_main_thread (send_map_request_thread_fn,
+ (u8 *) & a, sizeof (a));
+ return 0;
+}
+
+/**
+ * Take an action with a pending map request depending on expiration time
+ * and re-try counters.
+ */
+static void
+update_pending_request (pending_map_request_t * r, f64 dt)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ lisp_msmr_t *mr;
+
+ if (r->time_to_expire - dt < 0)
+ /* it's time to decide what to do with this pending request */
+ {
+ if (r->retries_num >= NUMBER_OF_RETRIES)
+ /* too many retries -> assume current map resolver is not available */
+ {
+ mr = get_map_resolver (&lcm->active_map_resolver);
+ if (!mr)
+ {
+ clib_warning ("Map resolver %U not found - probably deleted "
+ "by the user recently.", format_ip_address,
+ &lcm->active_map_resolver);
+ }
+ else
+ {
+ clib_warning ("map resolver %U is unreachable, ignoring",
+ format_ip_address, &lcm->active_map_resolver);
+
+ /* mark current map resolver unavailable so it won't be
+ * selected next time */
+ mr->is_down = 1;
+ mr->last_update = vlib_time_now (lcm->vlib_main);
+ }
+
+ reset_pending_mr_counters (r);
+ elect_map_resolver (lcm);
+
+ /* try to find a next eligible map resolver and re-send */
+ queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
+ 1 /* resend */ );
+ }
+ else
+ {
+ /* try again */
+ queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
+ 1 /* resend */ );
+ r->retries_num++;
+ r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
+ }
+ }
+ else
+ r->time_to_expire -= dt;
+}
+
+static void
+remove_dead_pending_map_requests (lisp_cp_main_t * lcm)
+{
+ u64 *nonce;
+ pending_map_request_t *pmr;
+ u32 *to_be_removed = 0, *pmr_index;
+
+ /* *INDENT-OFF* */
+ pool_foreach (pmr, lcm->pending_map_requests_pool,
+ ({
+ if (pmr->to_be_removed)
+ {
+ clib_fifo_foreach (nonce, pmr->nonces, ({
+ hash_unset (lcm->pending_map_requests_by_nonce, nonce[0]);
+ }));
+
+ vec_add1 (to_be_removed, pmr - lcm->pending_map_requests_pool);
+ }
+ }));
+ /* *INDENT-ON* */
+
+ vec_foreach (pmr_index, to_be_removed)
+ pool_put_index (lcm->pending_map_requests_pool, pmr_index[0]);
+
+ vec_free (to_be_removed);
+}
+
+static void
+update_rloc_probing (lisp_cp_main_t * lcm, f64 dt)
+{
+ static f64 time_left = RLOC_PROBING_INTERVAL;
+
+ if (!lcm->is_enabled || !lcm->rloc_probing)
+ return;
+
+ time_left -= dt;
+ if (time_left <= 0)
+ {
+ time_left = RLOC_PROBING_INTERVAL;
+ send_rloc_probes (lcm);
+ }
+}
+
+static int
+update_pending_map_register (pending_map_register_t * r, f64 dt, u8 * del_all)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ lisp_msmr_t *ms;
+ del_all[0] = 0;
+
+ r->time_to_expire -= dt;
+
+ if (r->time_to_expire < 0)
+ {
+ lcm->expired_map_registers++;
+
+ if (lcm->expired_map_registers >= lcm->max_expired_map_registers)
+ {
+ ms = get_map_server (&lcm->active_map_server);
+ if (!ms)
+ {
+ clib_warning ("Map server %U not found - probably deleted "
+ "by the user recently.", format_ip_address,
+ &lcm->active_map_server);
+ }
+ else
+ {
+ clib_warning ("map server %U is unreachable, ignoring",
+ format_ip_address, &lcm->active_map_server);
+
+ /* mark current map server unavailable so it won't be
+ * elected next time */
+ ms->is_down = 1;
+ ms->last_update = vlib_time_now (lcm->vlib_main);
+ }
+
+ elect_map_server (lcm);
+
+ /* indication for deleting all pending map registers */
+ del_all[0] = 1;
+ lcm->expired_map_registers = 0;
+ return 0;
+ }
+ else
+ {
+ /* delete pending map register */
+ return 0;
+ }
+ }
+ return 1;
+}
+
+static void
+update_map_register (lisp_cp_main_t * lcm, f64 dt)
+{
+ u32 *to_be_removed = 0, *pmr_index;
+ static f64 time_left = QUICK_MAP_REGISTER_INTERVAL;
+ static u64 mreg_sent_counter = 0;
+
+ pending_map_register_t *pmr;
+ u8 del_all = 0;
+
+ if (!lcm->is_enabled || !lcm->map_registering)
+ return;
+
+ /* *INDENT-OFF* */
+ pool_foreach (pmr, lcm->pending_map_registers_pool,
+ ({
+ if (!update_pending_map_register (pmr, dt, &del_all))
+ {
+ if (del_all)
+ break;
+ vec_add1 (to_be_removed, pmr - lcm->pending_map_registers_pool);
+ }
+ }));
+ /* *INDENT-ON* */
+
+ if (del_all)
+ {
+ /* delete all pending map register messages so they won't
+ * trigger another map server election.. */
+ pool_free (lcm->pending_map_registers_pool);
+ hash_free (lcm->map_register_messages_by_nonce);
+
+ /* ..and trigger registration against next map server (if any) */
+ time_left = 0;
+ }
+ else
+ {
+ vec_foreach (pmr_index, to_be_removed)
+ pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
+ }
+
+ vec_free (to_be_removed);
+
+ time_left -= dt;
+ if (time_left <= 0)
+ {
+ if (mreg_sent_counter >= QUICK_MAP_REGISTER_MSG_COUNT)
+ time_left = MAP_REGISTER_INTERVAL;
+ else
+ {
+ mreg_sent_counter++;
+ time_left = QUICK_MAP_REGISTER_INTERVAL;
+ }
+ send_map_register (lcm, 1 /* want map notify */ );
+ }
+}
+
+static uword
+send_map_resolver_service (vlib_main_t * vm,
+ vlib_node_runtime_t * rt, vlib_frame_t * f)
+{
+ u32 *expired = 0;
+ f64 period = 2.0;
+ pending_map_request_t *pmr;
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+
+ while (1)
+ {
+ vlib_process_wait_for_event_or_clock (vm, period);
+
+ /* currently no signals are expected - just wait for clock */
+ (void) vlib_process_get_events (vm, 0);
+
+ /* *INDENT-OFF* */
+ pool_foreach (pmr, lcm->pending_map_requests_pool,
+ ({
+ if (!pmr->to_be_removed)
+ update_pending_request (pmr, period);
+ }));
+ /* *INDENT-ON* */
+
+ remove_dead_pending_map_requests (lcm);
+
+ update_map_register (lcm, period);
+ update_rloc_probing (lcm, period);
+
+ expired = TW (tw_timer_expire_timers_vec) (&lcm->wheel,
+ vlib_time_now (vm), expired);
+ if (vec_len (expired) > 0)
+ {
+ u32 *mi = 0;
+ vec_foreach (mi, expired)
+ {
+ process_expired_mapping (lcm, mi[0]);
+ }
+ _vec_len (expired) = 0;
+ }
+ }
+
+ /* unreachable */
+ return 0;
+}
+
+vnet_api_error_t
+vnet_lisp_stats_enable_disable (u8 enable)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+
+ if (vnet_lisp_enable_disable_status () == 0)
+ return VNET_API_ERROR_LISP_DISABLED;
+
+ if (enable)
+ lcm->flags |= LISP_FLAG_STATS_ENABLED;
+ else
+ lcm->flags &= ~LISP_FLAG_STATS_ENABLED;
+
+ return 0;
+}
+
+u8
+vnet_lisp_stats_enable_disable_state (void)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+
+ if (vnet_lisp_enable_disable_status () == 0)
+ return VNET_API_ERROR_LISP_DISABLED;
+
+ return lcm->flags & LISP_FLAG_STATS_ENABLED;
+}
+
+void
+vnet_lisp_create_retry_process (lisp_cp_main_t * lcm)
+{
+ if (lcm->retry_service_index)
+ return;
+
+ lcm->retry_service_index = vlib_process_create (vlib_get_main (),
+ "lisp-retry-service",
+ send_map_resolver_service,
+ 16 /* stack_bytes */ );
+}
+
+u32
+vnet_lisp_set_transport_protocol (u8 protocol)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+
+ if (protocol < LISP_TRANSPORT_PROTOCOL_UDP ||
+ protocol > LISP_TRANSPORT_PROTOCOL_API)
+ return VNET_API_ERROR_INVALID_ARGUMENT;
+
+ lcm->transport_protocol = protocol;
+ return 0;
+}
+
+lisp_transport_protocol_t
+vnet_lisp_get_transport_protocol (void)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ return lcm->transport_protocol;
+}
+
+int
+vnet_lisp_enable_disable_xtr_mode (u8 is_enabled)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE;
+ u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE;
+ u8 petr_mode = lcm->flags & LISP_FLAG_PETR_MODE;
+
+ if (pitr_mode && is_enabled)
+ return VNET_API_ERROR_INVALID_ARGUMENT;
+
+ if (is_enabled && xtr_mode)
+ return 0;
+ if (!is_enabled && !xtr_mode)
+ return 0;
+
+ if (is_enabled)
+ {
+ if (!petr_mode)
+ {
+ lisp_cp_register_dst_port (lcm->vlib_main);
+ }
+ lisp_cp_enable_l2_l3_ifaces (lcm, 1 /* with_default_route */ );
+ lcm->flags |= LISP_FLAG_XTR_MODE;
+ }
+ else
+ {
+ if (!petr_mode)
+ {
+ lisp_cp_unregister_dst_port (lcm->vlib_main);
+ }
+ lisp_cp_disable_l2_l3_ifaces (lcm);
+ lcm->flags &= ~LISP_FLAG_XTR_MODE;
+ }
+ return 0;
+}
+
+int
+vnet_lisp_enable_disable_pitr_mode (u8 is_enabled)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE;
+ u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE;
+
+ if (xtr_mode && is_enabled)
+ return VNET_API_ERROR_INVALID_VALUE;
+
+ if (is_enabled && pitr_mode)
+ return 0;
+ if (!is_enabled && !pitr_mode)
+ return 0;
+
+ if (is_enabled)
+ {
+ /* create iface, no default route */
+ lisp_cp_enable_l2_l3_ifaces (lcm, 0 /* with_default_route */ );
+ lcm->flags |= LISP_FLAG_PITR_MODE;
+ }
+ else
+ {
+ lisp_cp_disable_l2_l3_ifaces (lcm);
+ lcm->flags &= ~LISP_FLAG_PITR_MODE;
+ }
+ return 0;
+}
+
+int
+vnet_lisp_enable_disable_petr_mode (u8 is_enabled)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE;
+ u8 petr_mode = lcm->flags & LISP_FLAG_PETR_MODE;
+
+ if (is_enabled && petr_mode)
+ return 0;
+ if (!is_enabled && !petr_mode)
+ return 0;
+
+ if (is_enabled)
+ {
+ if (!xtr_mode)
+ {
+ lisp_cp_register_dst_port (lcm->vlib_main);
+ }
+ lcm->flags |= LISP_FLAG_PETR_MODE;
+ }
+ else
+ {
+ if (!xtr_mode)
+ {
+ lisp_cp_unregister_dst_port (lcm->vlib_main);
+ }
+ lcm->flags &= ~LISP_FLAG_PETR_MODE;
+ }
+ return 0;
+}
+
+u8
+vnet_lisp_get_xtr_mode (void)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ return (lcm->flags & LISP_FLAG_XTR_MODE);
+}
+
+u8
+vnet_lisp_get_pitr_mode (void)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ return (lcm->flags & LISP_FLAG_PITR_MODE);
+}
+
+u8
+vnet_lisp_get_petr_mode (void)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ return (lcm->flags & LISP_FLAG_PETR_MODE);
+}
+
+VLIB_INIT_FUNCTION (lisp_cp_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */