X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=vnet%2Fvnet%2Flisp-cp%2Fcontrol.c;h=d7ac3c52d2aa53ea63d05cadecaa0272149835e2;hb=3cd9e730f9db0d998e5e8a27ddff1da5a123625b;hp=f4cb16fa016b635bb6fc09234dce172901071662;hpb=e127a7e4528472a320bf1cc343d3656dcdd4b108;p=vpp.git diff --git a/vnet/vnet/lisp-cp/control.c b/vnet/vnet/lisp-cp/control.c index f4cb16fa016..d7ac3c52d2a 100644 --- a/vnet/vnet/lisp-cp/control.c +++ b/vnet/vnet/lisp-cp/control.c @@ -13,414 +13,2142 @@ * limitations under the License. */ +#include #include #include #include #include -/* Adds mapping to map-cache but does NOT program LISP forwarding */ +typedef struct +{ + u8 is_resend; + gid_address_t seid; + gid_address_t deid; + u8 smr_invoked; +} map_request_args_t; + +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 == 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; +} + +static u32 +ip_fib_lookup_with_table (lisp_cp_main_t * lcm, u32 fib_index, + ip_address_t * dst) +{ + if (ip_addr_version (dst) == IP4) + return ip4_fib_lookup_with_table (lcm->im4, fib_index, &ip_addr_v4 (dst), + 0); + else + return ip6_fib_lookup_with_table (lcm->im6, fib_index, &ip_addr_v6 (dst)); +} + +u32 +ip_fib_get_egress_iface_for_dst_with_lm (lisp_cp_main_t * lcm, + ip_address_t * dst, + ip_lookup_main_t * lm) +{ + u32 adj_index; + ip_adjacency_t *adj; + + adj_index = ip_fib_lookup_with_table (lcm, 0, dst); + adj = ip_get_adjacency (lm, adj_index); + + if (adj == 0) + return ~0; + + /* we only want outgoing routes */ + if (adj->lookup_next_index != IP_LOOKUP_NEXT_ARP + && adj->lookup_next_index != IP_LOOKUP_NEXT_REWRITE) + return ~0; + + return adj->rewrite_header.sw_if_index; +} + +/** + * 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) +{ + ip_lookup_main_t *lm; + + lm = ip_addr_version (dst) == IP4 ? + &lcm->im4->lookup_main : &lcm->im6->lookup_main; + + return ip_fib_get_egress_iface_for_dst_with_lm (lcm, dst, lm); +} + +/** + * 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 == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main; + si = ip_fib_get_egress_iface_for_dst_with_lm (lcm, dst, lm); + + 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) +{ + uword *dp_table, *intf; + vnet_lisp_gpe_add_del_iface_args_t _ai, *ai = &_ai; + + 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; + } + } + + intf = hash_get (is_l2 ? lcm->l2_dp_intf_by_vni : lcm->dp_intf_by_vni, vni); + + /* enable/disable data-plane interface */ + if (is_add) + { + /* create interface */ + if (!intf) + { + ai->is_add = 1; + ai->vni = vni; + ai->is_l2 = is_l2; + ai->dp_table = dp_table[0]; + + vnet_lisp_gpe_add_del_iface (ai, 0); + + /* keep track of vnis for which interfaces have been created */ + hash_set (lcm->dp_intf_by_vni, vni, 1); + } + } + else + { + if (intf == 0) + { + clib_warning ("interface for vni %d doesn't exist!", vni); + return VNET_API_ERROR_INVALID_VALUE; + } + + ai->is_add = 0; + ai->vni = vni; + ai->dp_table = dp_table[0]; + vnet_lisp_gpe_add_del_iface (ai, 0); + hash_unset (lcm->dp_intf_by_vni, vni); + } + + return 0; +} + +static void +dp_del_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; + fwd_entry_t *fe = 0; + uword *feip = 0; + 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 (&a->rmt_eid); + gid_address_copy (&a->rmt_eid, &fe->deid); + + 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; + + 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; + vec_add1 (locator_pairs[0], pair); + found = 1; + } + } + } + else + break; + } + + hash_free (checked); + return found; +} + +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; + mapping_t *src_map, *dst_map; + u32 sw_if_index; + uword *feip = 0, *dpid; + fwd_entry_t *fe; + u8 type; + + 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, src_map_index, dst_map_index); + + src_map = pool_elt_at_index (lcm->mapping_pool, src_map_index); + dst_map = pool_elt_at_index (lcm->mapping_pool, dst_map_index); + + /* insert data plane forwarding entry */ + a->is_add = 1; + + gid_address_copy (&a->rmt_eid, &dst_map->eid); + a->vni = gid_address_vni (&a->rmt_eid); + + /* get vrf or bd_index associated to vni */ + type = gid_address_type (&dst_map->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 */ + if (0 == get_locator_pairs (lcm, src_map, dst_map, &a->locator_pairs)) + { + /* negative entry */ + a->is_negative = 1; + a->action = dst_map->action; + } + + /* TODO remove */ + u8 ipver = ip_prefix_version (&gid_address_ippref (&a->rmt_eid)); + a->decap_next_index = (ipver == IP4) ? + LISP_GPE_INPUT_NEXT_IP4_INPUT : LISP_GPE_INPUT_NEXT_IP6_INPUT; + + vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index); + + /* add tunnel to fwd entry table XXX check return value from DP insertion */ + pool_get (lcm->fwd_entry_pool, fe); + fe->locator_pairs = a->locator_pairs; + gid_address_copy (&fe->deid, &a->rmt_eid); + hash_set (lcm->fwd_entry_by_mapping_index, dst_map_index, + fe - lcm->fwd_entry_pool); +} + +/** + * 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; + mapping_t *m, *old_map; + u32 **eid_indexes; + + 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; + + 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) + { + 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); + } + + /* 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) + { + 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 clib_error_t * +lisp_add_del_local_eid_command_fn (vlib_main_t * vm, unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + unformat_input_t _line_input, *line_input = &_line_input; + u8 is_add = 1; + gid_address_t eid; + gid_address_t *eids = 0; + clib_error_t *error = 0; + u8 *locator_set_name = 0; + u32 locator_set_index = 0, map_index = 0; + uword *p; + vnet_lisp_add_del_mapping_args_t _a, *a = &_a; + int rv = 0; + u32 vni = 0; + + memset (&eid, 0, sizeof (eid)); + memset (a, 0, sizeof (*a)); + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "add")) + is_add = 1; + else if (unformat (line_input, "del")) + is_add = 0; + else if (unformat (line_input, "eid %U", unformat_gid_address, &eid)) + ; + else if (unformat (line_input, "vni %d", &vni)) + gid_address_vni (&eid) = vni; + else if (unformat (line_input, "locator-set %_%v%_", &locator_set_name)) + { + p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name); + if (!p) + { + error = clib_error_return (0, "locator-set %s doesn't exist", + locator_set_name); + goto done; + } + locator_set_index = p[0]; + } + else + { + error = unformat_parse_error (line_input); + goto done; + } + } + /* XXX treat batch configuration */ + + if (GID_ADDR_SRC_DST == gid_address_type (&eid)) + { + error = + clib_error_return (0, "src/dst is not supported for local EIDs!"); + goto done; + } + + gid_address_copy (&a->eid, &eid); + a->is_add = is_add; + a->locator_set_index = locator_set_index; + a->local = 1; + + rv = vnet_lisp_add_del_local_mapping (a, &map_index); + if (0 != rv) + { + error = clib_error_return (0, "failed to %s local mapping!", + is_add ? "add" : "delete"); + } +done: + vec_free (eids); + if (locator_set_name) + vec_free (locator_set_name); + gid_address_free (&a->eid); + return error; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_add_del_local_eid_command) = { + .path = "lisp eid-table", + .short_help = "lisp eid-table add/del [vni ] eid " + "locator-set ", + .function = lisp_add_del_local_eid_command_fn, +}; +/* *INDENT-ON* */ + +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 -1; + } + + 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); + } + else + { + if (!dp_idp || !vnip) + { + clib_warning ("vni %d or vrf %d not used in any vrf/vni! " + "mapping!", vni, dp_id); + return -1; + } + hash_unset (dp_table_by_vni[0], vni); + hash_unset (vni_by_dp_table[0], dp_id); + + /* remove dp iface */ + dp_add_del_iface (lcm, vni, is_l2, 0); + } + return 0; + +} + +static clib_error_t * +lisp_eid_table_map_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + u8 is_add = 1, is_l2 = 0; + u32 vni = 0, dp_id = 0; + unformat_input_t _line_input, *line_input = &_line_input; + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "del")) + is_add = 0; + else if (unformat (line_input, "vni %d", &vni)) + ; + else if (unformat (line_input, "vrf %d", &dp_id)) + ; + else if (unformat (line_input, "bd %d", &dp_id)) + is_l2 = 1; + else + { + return unformat_parse_error (line_input); + } + } + vnet_lisp_eid_table_map (vni, dp_id, is_l2, is_add); + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_eid_table_map_command) = { + .path = "lisp eid-table map", + .short_help = "lisp eid-table map [del] vni vrf | bd ", + .function = lisp_eid_table_map_command_fn, +}; +/* *INDENT-ON* */ + +/* 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; +} + +/** + * Adds/removes/updates mapping. Does not program forwarding. + * + * @param eid end-host identifier + * @param rlocs vector of remote locators + * @param action action for negative map-reply + * @param is_add add mapping if non-zero, delete otherwise + * @param res_map_index the map-index that was created/updated/removed. It is + * set to ~0 if no action is taken. + * @param is_static used for distinguishing between statically learned + remote mappings and mappings obtained from MR + * @return return code + */ +int +vnet_lisp_add_del_mapping (gid_address_t * eid, locator_t * rlocs, u8 action, + u8 authoritative, u32 ttl, u8 is_add, u8 is_static, + u32 * res_map_index) +{ + 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; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + u32 mi, ls_index = 0, dst_map_index; + mapping_t *old_map; + + 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; + + memset (m_args, 0, sizeof (m_args[0])); + memset (ls_args, 0, sizeof (ls_args[0])); + + ls_args->locators = rlocs; + + 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 (is_add) + { + /* overwrite: if mapping already exists, decide if locators should be + * updated and be done */ + if (old_map && gid_address_cmp (&old_map->eid, eid) == 0) + { + if (!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, + &eid); + return 0; + } + + locator_set_t *old_ls; + + /* update mapping attributes */ + old_map->action = action; + old_map->authoritative = authoritative; + old_map->ttl = 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 (res_map_index) + res_map_index[0] = mi; + } + } + /* new mapping */ + else + { + ls_args->is_add = 1; + ls_args->index = ~0; + + vnet_lisp_add_del_locator_set (ls_args, &ls_index); + + /* add mapping */ + gid_address_copy (&m_args->eid, eid); + m_args->is_add = 1; + m_args->action = action; + m_args->locator_set_index = ls_index; + m_args->is_static = is_static; + vnet_lisp_map_cache_add_del (m_args, &dst_map_index); + + if (res_map_index) + res_map_index[0] = dst_map_index; + } + } + else + { + 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; + + /* delete mapping associated from map-cache */ + vnet_lisp_map_cache_add_del (m_args, 0); + + ls_args->is_add = 0; + ls_args->index = old_map->locator_set_index; + /* delete locator set */ + vnet_lisp_add_del_locator_set (ls_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, 0, 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 +lisp_add_del_adjacency (lisp_cp_main_t * lcm, gid_address_t * local_eid, + gid_address_t * remote_eid, u8 is_add) +{ + 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_lookup (&lcm->mapping_index_by_gid, remote_eid); + if (GID_LOOKUP_MISS == remote_mi) + { + clib_warning ("Remote eid %U not found. Cannot add adjacency!", + format_gid_address, remote_eid); + + return -1; + } + + if (is_add) + { + /* TODO 1) check if src/dst 2) once we have src/dst working, use it in + * delete*/ + + /* check if source eid has an associated mapping. If pitr mode is on, + * just use the pitr's mapping */ + local_mi = lcm->lisp_pitr ? lcm->pitr_map_index : + gid_dictionary_lookup (&lcm->mapping_index_by_gid, local_eid); + + + if (GID_LOOKUP_MISS == local_mi) + { + clib_warning ("Local eid %U not found. Cannot add adjacency!", + format_gid_address, local_eid); + + return -1; + } + + /* update forwarding */ + dp_add_fwd_entry (lcm, local_mi, remote_mi); + } + else + dp_del_fwd_entry (lcm, 0, remote_mi); + + return 0; +} + +int +vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + return lisp_add_del_adjacency (lcm, &a->seid, &a->deid, a->is_add); +} + +/** + * Handler for add/del remote mapping CLI. + * + * @param vm vlib context + * @param input input from user + * @param cmd cmd + * @return pointer to clib error structure + */ +static clib_error_t * +lisp_add_del_remote_mapping_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + clib_error_t *error = 0; + unformat_input_t _line_input, *line_input = &_line_input; + u8 is_add = 1, del_all = 0; + locator_t rloc, *rlocs = 0, *curr_rloc = 0; + gid_address_t eid; + u8 eid_set = 0; + u32 vni, action = ~0, p, w; + int rv; + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + memset (&eid, 0, sizeof (eid)); + memset (&rloc, 0, sizeof (rloc)); + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "del-all")) + del_all = 1; + else if (unformat (line_input, "del")) + is_add = 0; + else if (unformat (line_input, "add")) + ; + else if (unformat (line_input, "eid %U", unformat_gid_address, &eid)) + eid_set = 1; + else if (unformat (line_input, "vni %u", &vni)) + { + gid_address_vni (&eid) = vni; + } + else if (unformat (line_input, "p %d w %d", &p, &w)) + { + if (!curr_rloc) + { + clib_warning + ("No RLOC configured for setting priority/weight!"); + goto done; + } + curr_rloc->priority = p; + curr_rloc->weight = w; + } + else if (unformat (line_input, "rloc %U", unformat_ip_address, + &gid_address_ip (&rloc.address))) + { + vec_add1 (rlocs, rloc); + curr_rloc = &rlocs[vec_len (rlocs) - 1]; + } + else if (unformat (line_input, "action %U", + unformat_negative_mapping_action, &action)) + ; + else + { + clib_warning ("parse error"); + goto done; + } + } + + if (!eid_set) + { + clib_warning ("missing eid!"); + goto done; + } + + if (!del_all) + { + if (is_add && (~0 == action) && 0 == vec_len (rlocs)) + { + clib_warning ("no action set for negative map-reply!"); + goto done; + } + } + else + { + vnet_lisp_clear_all_remote_adjacencies (); + goto done; + } + + /* TODO build src/dst with seid */ + + /* if it's a delete, clean forwarding */ + if (!is_add) + { + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + rv = lisp_add_del_adjacency (lcm, 0, &eid, /* is_add */ 0); + if (rv) + { + goto done; + } + } + + /* add as static remote mapping, i.e., not authoritative and infinite + * ttl */ + rv = vnet_lisp_add_del_mapping (&eid, rlocs, action, 0, ~0, is_add, + 1 /* is_static */ , 0); + + if (rv) + clib_warning ("failed to %s remote mapping!", is_add ? "add" : "delete"); + +done: + vec_free (rlocs); + unformat_free (line_input); + return error; +} + +VLIB_CLI_COMMAND (lisp_add_del_remote_mapping_command) = +{ +.path = "lisp remote-mapping",.short_help = + "lisp remote-mapping add|del [del-all] vni " + "eid [action ] rloc p w " + "[rloc ... ]",.function = + lisp_add_del_remote_mapping_command_fn,}; + +/** + * Handler for add/del adjacency CLI. + */ +static clib_error_t * +lisp_add_del_adjacency_command_fn (vlib_main_t * vm, unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + clib_error_t *error = 0; + unformat_input_t _line_input, *line_input = &_line_input; + vnet_lisp_add_del_adjacency_args_t _a, *a = &_a; + u8 is_add = 1; + locator_t rloc, *rlocs = 0; + ip_prefix_t *deid_ippref, *seid_ippref; + gid_address_t seid, deid; + u8 *dmac = gid_address_mac (&deid); + u8 *smac = gid_address_mac (&seid); + u8 deid_set = 0, seid_set = 0; + u8 *s = 0; + u32 vni, action = ~0; + int rv; + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + memset (&deid, 0, sizeof (deid)); + memset (&seid, 0, sizeof (seid)); + memset (&rloc, 0, sizeof (rloc)); + + seid_ippref = &gid_address_ippref (&seid); + deid_ippref = &gid_address_ippref (&deid); + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "del")) + is_add = 0; + else if (unformat (line_input, "add")) + ; + else if (unformat (line_input, "deid %U", + unformat_ip_prefix, deid_ippref)) + { + gid_address_type (&deid) = GID_ADDR_IP_PREFIX; + deid_set = 1; + } + else if (unformat (line_input, "deid %U", unformat_mac_address, dmac)) + { + gid_address_type (&deid) = GID_ADDR_MAC; + deid_set = 1; + } + else if (unformat (line_input, "vni %u", &vni)) + { + gid_address_vni (&seid) = vni; + gid_address_vni (&deid) = vni; + } + else if (unformat (line_input, "seid %U", + unformat_ip_prefix, seid_ippref)) + { + gid_address_type (&seid) = GID_ADDR_IP_PREFIX; + seid_set = 1; + } + else if (unformat (line_input, "seid %U", unformat_mac_address, smac)) + { + gid_address_type (&seid) = GID_ADDR_MAC; + seid_set = 1; + } + else + { + clib_warning ("parse error"); + goto done; + } + } + + if (!deid_set) + { + clib_warning ("missing deid!"); + goto done; + } + + if (GID_ADDR_IP_PREFIX == gid_address_type (&deid)) + { + /* if seid not set, make sure the ip version is the same as that + * of the deid. This ensures the seid to be configured will be + * either 0/0 or ::/0 */ + if (!seid_set) + ip_prefix_version (seid_ippref) = ip_prefix_version (deid_ippref); + + if (is_add && + (ip_prefix_version (deid_ippref) + != ip_prefix_version (seid_ippref))) + { + clib_warning ("source and destination EIDs are not" + " in the same IP family!"); + goto done; + } + } + + if (is_add && (~0 == action) && 0 == vec_len (rlocs)) + { + clib_warning ("no action set for negative map-reply!"); + goto done; + } + + memset (a, 0, sizeof (a[0])); + gid_address_copy (&a->seid, &deid); + gid_address_copy (&a->deid, &seid); + + a->is_add = is_add; + rv = vnet_lisp_add_del_adjacency (a); + + if (rv) + clib_warning ("failed to %s adjacency!", is_add ? "add" : "delete"); + +done: + unformat_free (line_input); + if (s) + vec_free (s); + return error; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_add_del_adjacency_command) = { + .path = "lisp adjacency", + .short_help = "lisp adjacency add|del vni " + "deid seid [action ] rloc [rloc ... ]", + .function = lisp_add_del_adjacency_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +lisp_show_map_resolvers_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + map_resolver_t *mr; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + + vec_foreach (mr, lcm->map_resolvers) + { + vlib_cli_output (vm, "%U", format_ip_address, &mr->address); + } + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_show_map_resolvers_command) = { + .path = "show lisp map-resolvers", + .short_help = "show lisp map-resolvers", + .function = lisp_show_map_resolvers_command_fn, +}; +/* *INDENT-ON* */ + +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; + lcm->pitr_map_index = m - lcm->mapping_pool; + + /* enable pitr mode */ + lcm->lisp_pitr = 1; + } + else + { + /* remove pitr mapping */ + pool_put_index (lcm->mapping_pool, lcm->pitr_map_index); + + /* disable pitr mode */ + lcm->lisp_pitr = 0; + } + return 0; +} + +static clib_error_t * +lisp_pitr_set_locator_set_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + u8 locator_name_set = 0; + u8 *locator_set_name = 0; + u8 is_add = 1; + unformat_input_t _line_input, *line_input = &_line_input; + clib_error_t *error = 0; + int rv = 0; + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "ls %_%v%_", &locator_set_name)) + locator_name_set = 1; + else if (unformat (line_input, "disable")) + is_add = 0; + else + return clib_error_return (0, "parse error"); + } + + if (!locator_name_set) + { + clib_warning ("No locator set specified!"); + goto done; + } + rv = vnet_lisp_pitr_set_locator_set (locator_set_name, is_add); + if (0 != rv) + { + error = clib_error_return (0, "failed to %s pitr!", + is_add ? "add" : "delete"); + } + +done: + if (locator_set_name) + vec_free (locator_set_name); + return error; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_pitr_set_locator_set_command) = { + .path = "lisp pitr", + .short_help = "lisp pitr [disable] ls ", + .function = lisp_pitr_set_locator_set_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +lisp_show_pitr_command_fn (vlib_main_t * vm, + unformat_input_t * input, vlib_cli_command_t * cmd) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + mapping_t *m; + locator_set_t *ls; + u8 *tmp_str = 0; + + vlib_cli_output (vm, "%=20s%=16s", + "pitr", lcm->lisp_pitr ? "locator-set" : ""); + + if (!lcm->lisp_pitr) + { + vlib_cli_output (vm, "%=20s", "disable"); + return 0; + } + + if (~0 == lcm->pitr_map_index) + { + tmp_str = format (0, "N/A"); + } + else + { + m = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index); + if (~0 != m->locator_set_index) + { + ls = + pool_elt_at_index (lcm->locator_set_pool, m->locator_set_index); + tmp_str = format (0, "%s", ls->name); + } + else + { + tmp_str = format (0, "N/A"); + } + } + vec_add1 (tmp_str, 0); + + vlib_cli_output (vm, "%=20s%=16s", "enable", tmp_str); + + vec_free (tmp_str); + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_show_pitr_command) = { + .path = "show lisp pitr", + .short_help = "Show pitr", + .function = lisp_show_pitr_command_fn, +}; +/* *INDENT-ON* */ + +static u8 * +format_eid_entry (u8 * s, va_list * args) +{ + vnet_main_t *vnm = va_arg (*args, vnet_main_t *); + lisp_cp_main_t *lcm = va_arg (*args, lisp_cp_main_t *); + mapping_t *mapit = va_arg (*args, mapping_t *); + locator_set_t *ls = va_arg (*args, locator_set_t *); + gid_address_t *gid = &mapit->eid; + u32 ttl = mapit->ttl; + u8 aut = mapit->authoritative; + u32 *loc_index; + u8 first_line = 1; + u8 *loc; + + u8 *type = ls->local ? format (0, "local(%s)", ls->name) + : format (0, "remote"); + + if (vec_len (ls->locator_indices) == 0) + { + s = format (s, "%-35U%-30s%-20u%-u", format_gid_address, gid, + type, ttl, aut); + } + else + { + vec_foreach (loc_index, ls->locator_indices) + { + locator_t *l = pool_elt_at_index (lcm->locator_pool, loc_index[0]); + if (l->local) + loc = format (0, "%U", format_vnet_sw_if_index_name, vnm, + l->sw_if_index); + else + loc = format (0, "%U", format_ip_address, + &gid_address_ip (&l->address)); + + if (first_line) + { + s = format (s, "%-35U%-20s%-30v%-20u%-u\n", format_gid_address, + gid, type, loc, ttl, aut); + first_line = 0; + } + else + s = format (s, "%55s%v\n", "", loc); + } + } + return s; +} + +static clib_error_t * +lisp_show_eid_table_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + mapping_t *mapit; + unformat_input_t _line_input, *line_input = &_line_input; + u32 mi; + gid_address_t eid; + u8 print_all = 1; + u8 filter = 0; + + memset (&eid, 0, sizeof (eid)); + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "eid %U", unformat_gid_address, &eid)) + print_all = 0; + else if (unformat (line_input, "local")) + filter = 1; + else if (unformat (line_input, "remote")) + filter = 2; + else + return clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + } + + vlib_cli_output (vm, "%-35s%-20s%-30s%-20s%-s", + "EID", "type", "locators", "ttl", "autoritative"); + + if (print_all) + { + /* *INDENT-OFF* */ + pool_foreach (mapit, lcm->mapping_pool, + ({ + locator_set_t * ls = pool_elt_at_index (lcm->locator_set_pool, + mapit->locator_set_index); + if (filter && !((1 == filter && ls->local) || + (2 == filter && !ls->local))) + { + continue; + } + vlib_cli_output (vm, "%U", format_eid_entry, lcm->vnet_main, + lcm, mapit, ls); + })); + /* *INDENT-ON* */ + } + else + { + mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &eid); + if ((u32) ~ 0 == mi) + return 0; + + mapit = pool_elt_at_index (lcm->mapping_pool, mi); + locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool, + mapit->locator_set_index); + + if (filter && !((1 == filter && ls->local) || + (2 == filter && !ls->local))) + { + return 0; + } + + vlib_cli_output (vm, "%U,", format_eid_entry, lcm->vnet_main, + lcm, mapit, ls); + } + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_cp_show_eid_table_command) = { + .path = "show lisp eid-table", + .short_help = "Shows EID table", + .function = lisp_show_eid_table_command_fn, +}; +/* *INDENT-ON* */ + +/* 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) + { + 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 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], ls_index); + } + } + else + { + ls_index = p[0]; + + itloc = a->locators; + 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) + { + remove_locator_from_locator_set (ls, locit, ls_index, loc_id); + } + if (0 == loc->local && + !gid_address_cmp (&loc->address, &itloc->address)) + { + remove_locator_from_locator_set (ls, locit, ls_index, loc_id); + } + + loc_id++; + } + } + + return 0; +} + int -vnet_lisp_add_del_mapping (vnet_lisp_add_del_mapping_args_t * a, - u32 * map_index_result) +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(); - u32 mi, * map_indexp, map_index, i; - mapping_t * m; - u32 ** eid_indexes; + 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; + } - mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->deid); if (a->is_add) { - /* TODO check if overwriting and take appropriate actions */ - if (mi != GID_LOOKUP_MISS) { - clib_warning("eid %U found in the eid-table", format_ip_address, - &a->deid); - return -1; - } - - pool_get(lcm->mapping_pool, m); - m->eid = a->deid; - m->locator_set_index = a->locator_set_index; - m->ttl = a->ttl; - m->local = a->local; + p = get_locator_set_index (a, p); - map_index = m - lcm->mapping_pool; - gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->deid, map_index, - 1); + /* 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); + 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; + } + } - 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 -1; - } + /* clean locator to locator-sets data */ + clean_locator_to_locator_set (lcm, p[0]); - /* 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 (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; +} - if (a->local) - { - /* mark as local */ - vec_add1(lcm->local_mappings_indexes, map_index); +clib_error_t * +vnet_lisp_enable_disable (u8 is_enable) +{ + u32 vni, dp_table; + 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"); + } - /* XXX do something else? */ - } - map_index_result[0] = map_index; + if (is_enable) + { + /* enable all l2 and l3 ifaces */ + + /* *INDENT-OFF* */ + hash_foreach(vni, dp_table, lcm->table_id_by_vni, ({ + dp_add_del_iface(lcm, vni, 0, 1); + })); + hash_foreach(vni, dp_table, lcm->bd_id_by_vni, ({ + dp_add_del_iface(lcm, vni, /* is_l2 */ 1, 1); + })); + /* *INDENT-ON* */ } else { - if (mi != ~0) { - clib_warning("eid %U not found in the eid-table", format_ip_address, - &a->deid); - return -1; - } - - /* 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) - { - 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 tunnel ??? */ - } - - /* remove mapping from dictionary */ - gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->deid, 0, 0); - pool_put_index (lcm->mapping_pool, mi); + /* clear interface table */ + hash_free (lcm->dp_intf_by_vni); + hash_free (lcm->fwd_entry_by_mapping_index); + pool_free (lcm->fwd_entry_pool); } + /* update global flag */ + lcm->is_enabled = is_enable; + return 0; } static clib_error_t * -lisp_add_del_local_eid_command_fn (vlib_main_t * vm, unformat_input_t * input, - vlib_cli_command_t * cmd) +lisp_enable_disable_command_fn (vlib_main_t * vm, unformat_input_t * input, + vlib_cli_command_t * cmd) { - lisp_cp_main_t * lcm = vnet_lisp_cp_get_main(); - unformat_input_t _line_input, * line_input = &_line_input; - u8 is_add = 1; - gid_address_t eid; - ip_prefix_t * prefp = &gid_address_ippref(&eid); - gid_address_t * eids = 0; - clib_error_t * error = 0; - u8 * locator_set_name; - u32 locator_set_index = 0, map_index = 0; - uword * p; - vnet_lisp_add_del_mapping_args_t _a, * a = &_a; - - gid_address_type (&eid) = IP_PREFIX; + unformat_input_t _line_input, *line_input = &_line_input; + u8 is_enabled = 0; + u8 is_set = 0; /* Get a line of input. */ - if (! unformat_user (input, unformat_line_input, line_input)) + if (!unformat_user (input, unformat_line_input, line_input)) return 0; while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { - if (unformat (line_input, "add")) - is_add = 1; - else if (unformat (line_input, "del")) - is_add = 0; - else if (unformat (line_input, "eid %U", unformat_ip_prefix, prefp)) - { - vec_add1(eids, eid); - } - else if (unformat (line_input, "locator-set %_%v%_", &locator_set_name)) - { - p = hash_get_mem(lcm->locator_set_index_by_name, locator_set_name); - if (!p) - { - error = clib_error_return(0, "locator-set %s doesn't exist", - locator_set_name); - goto done; - } - locator_set_index = p[0]; - } + if (unformat (line_input, "enable")) + { + is_set = 1; + is_enabled = 1; + } + else if (unformat (line_input, "disable")) + is_set = 1; else - { - error = unformat_parse_error(line_input); - goto done; - } + { + return clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + } } - /* XXX treat batch configuration */ - a->deid = eid; - a->is_add = is_add; - a->locator_set_index = locator_set_index; - a->local = 1; + if (!is_set) + return clib_error_return (0, "state not set"); - vnet_lisp_add_del_mapping (a, &map_index); - done: - vec_free(eids); - return error; + return vnet_lisp_enable_disable (is_enabled); } -VLIB_CLI_COMMAND (lisp_add_del_local_eid_command) = { - .path = "lisp eid-table", - .short_help = "lisp eid-table add/del eid locator-set ", - .function = lisp_add_del_local_eid_command_fn, +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_cp_enable_disable_command) = { + .path = "lisp", + .short_help = "lisp [enable|disable]", + .function = lisp_enable_disable_command_fn, }; +/* *INDENT-ON* */ -static clib_error_t * -lisp_show_local_eid_table_command_fn (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) +u8 +vnet_lisp_enable_disable_status (void) { - lisp_cp_main_t * lcm = vnet_lisp_cp_get_main(); - mapping_t * mapit; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + return lcm->is_enabled; +} - vlib_cli_output (vm, "%=20s%=16s", "EID", "Locator"); - pool_foreach (mapit, lcm->mapping_pool, - ({ - u8 * msg = 0; - locator_set_t * ls = pool_elt_at_index (lcm->locator_set_pool, - mapit->locator_set_index); - vlib_cli_output (vm, "%-16U%16v", format_gid_address, &mapit->eid, - ls->name); - vec_free (msg); - })); +static u8 * +format_lisp_status (u8 * s, va_list * args) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + return format (s, "%s", lcm->is_enabled ? "enabled" : "disabled"); +} +static clib_error_t * +lisp_show_status_command_fn (vlib_main_t * vm, unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + u8 *msg = 0; + msg = format (msg, "feature: %U\ngpe: %U\n", + format_lisp_status, format_vnet_lisp_gpe_status); + vlib_cli_output (vm, "%v", msg); + vec_free (msg); return 0; } -VLIB_CLI_COMMAND (lisp_cp_show_local_eid_table_command) = { - .path = "show lisp eid-table", - .short_help = "Shows local EID table", - .function = lisp_show_local_eid_table_command_fn, +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_show_status_command) = { + .path = "show lisp status", + .short_help = "show lisp status", + .function = lisp_show_status_command_fn, }; +/* *INDENT-ON* */ -/* 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) +static clib_error_t * +lisp_show_eid_table_map_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) { - u32 i, j, *loc_indexp, *ls_indexp, **ls_indexes; - 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; - } + hash_pair_t *p; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - /* delete index for removed locator-set*/ - vec_del1(ls_indexes[0], j); + vlib_cli_output (vm, "%=10s%=10s", "VNI", "VRF"); - /* 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]); + /* *INDENT-OFF* */ + hash_foreach_pair (p, lcm->table_id_by_vni, + ({ + vlib_cli_output (vm, "%=10d%=10d", p->key, p->value[0]); + })); + /* *INDENT-ON* */ - /* remove from local locator-set vector */ - if (ls->local) - { - u32 k, *llocp; - for (k = 0; k < vec_len(lcm->local_locator_set_indexes); k++) - { - llocp = vec_elt_at_index(lcm->local_locator_set_indexes, k); - if (llocp[0] == lsi) - break; - } - vec_del1(lcm->local_locator_set_indexes, k); - } - } + 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; - locator_t * loc, * itloc; - uword _p = (u32)~0, * p = &_p; - u32 loc_index, ls_index, ** ls_indexes; - if (a->is_add) - { - /* check if overwrite */ - if (a->local) - p = hash_get_mem(lcm->locator_set_index_by_name, a->name); - else - *p = a->index; +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_show_eid_table_map_command) = { + .path = "show lisp eid-table map", + .short_help = "show lisp eid-table vni to vrf mappings", + .function = lisp_show_eid_table_map_command_fn, +}; +/* *INDENT-ON* */ - /* 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); - 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; - } +static clib_error_t * +lisp_add_del_locator_set_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + lisp_gpe_main_t *lgm = &lisp_gpe_main; + vnet_main_t *vnm = lgm->vnet_main; + unformat_input_t _line_input, *line_input = &_line_input; + u8 is_add = 1; + clib_error_t *error = 0; + u8 *locator_set_name = 0; + locator_t locator, *locators = 0; + vnet_lisp_add_del_locator_set_args_t _a, *a = &_a; + u32 ls_index = 0; + int rv = 0; - /* allocate locators */ - vec_foreach (itloc, a->locators) - { - pool_get(lcm->locator_pool, loc); - loc[0] = itloc[0]; - loc_index = loc - lcm->locator_pool; + memset (&locator, 0, sizeof (locator)); + memset (a, 0, sizeof (a[0])); - vec_add1(ls->locator_indices, loc_index); + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; - 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], ls_index); - } - } - else + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { - /* find locator-set */ - if (a->local) - { - p = hash_get_mem(lcm->locator_set_index_by_name, a->name); - if (!p) - { - clib_warning("locator-set %v doesn't exists", a->name); - return -1; - } - } + if (unformat (line_input, "add %_%v%_", &locator_set_name)) + is_add = 1; + else if (unformat (line_input, "del %_%v%_", &locator_set_name)) + is_add = 0; + else if (unformat (line_input, "iface %U p %d w %d", + unformat_vnet_sw_interface, vnm, + &locator.sw_if_index, &locator.priority, + &locator.weight)) + { + locator.local = 1; + vec_add1 (locators, locator); + } else - *p = a->index; - - 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; - } -// /* XXX what happens when a mapping is configured to use the loc-set ? */ -// if (vec_len (vec_elt_at_index(lcm->locator_set_to_eids, p[0])) != 0) -// { -// clib_warning ("Can't delete a locator that supports a mapping!"); -// return -1; -// } + { + error = unformat_parse_error (line_input); + goto done; + } + } - /* clean locator to locator-sets data */ - clean_locator_to_locator_set (lcm, p[0]); + a->name = locator_set_name; + a->locators = locators; + a->is_add = is_add; + a->local = 1; - 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); - } - pool_put(lcm->locator_set_pool, ls); + rv = vnet_lisp_add_del_locator_set (a, &ls_index); + if (0 != rv) + { + error = clib_error_return (0, "failed to %s locator-set!", + is_add ? "add" : "delete"); } - return 0; + +done: + vec_free (locators); + if (locator_set_name) + vec_free (locator_set_name); + return error; } +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_cp_add_del_locator_set_command) = { + .path = "lisp locator-set", + .short_help = "lisp locator-set add/del [iface " + "p w ]", + .function = lisp_add_del_locator_set_command_fn, +}; +/* *INDENT-ON* */ + static clib_error_t * -lisp_add_del_locator_set_command_fn (vlib_main_t * vm, unformat_input_t * input, - vlib_cli_command_t * cmd) +lisp_add_del_locator_in_set_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) { - lisp_gpe_main_t * lgm = &lisp_gpe_main; - vnet_main_t * vnm = lgm->vnet_main; - unformat_input_t _line_input, * line_input = &_line_input; + lisp_gpe_main_t *lgm = &lisp_gpe_main; + vnet_main_t *vnm = lgm->vnet_main; + unformat_input_t _line_input, *line_input = &_line_input; u8 is_add = 1; - clib_error_t * error = 0; - u8 * locator_set_name = 0; - locator_t locator, * locators = 0; - vnet_lisp_add_del_locator_set_args_t _a, * a = &_a; + clib_error_t *error = 0; + u8 *locator_set_name = 0; + u8 locator_set_name_set = 0; + locator_t locator, *locators = 0; + vnet_lisp_add_del_locator_set_args_t _a, *a = &_a; u32 ls_index = 0; - memset(&locator, 0, sizeof(locator)); - memset(a, 0, sizeof(a[0])); + memset (&locator, 0, sizeof (locator)); + memset (a, 0, sizeof (a[0])); /* Get a line of input. */ - if (! unformat_user (input, unformat_line_input, line_input)) + if (!unformat_user (input, unformat_line_input, line_input)) return 0; while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { - if (unformat (line_input, "add %_%v%_", &locator_set_name)) - is_add = 1; - else if (unformat (line_input, "del %_%v%_", &locator_set_name)) - is_add = 0; + if (unformat (line_input, "add")) + is_add = 1; + else if (unformat (line_input, "del")) + is_add = 0; + else if (unformat (line_input, "locator-set %_%v%_", &locator_set_name)) + locator_set_name_set = 1; else if (unformat (line_input, "iface %U p %d w %d", - unformat_vnet_sw_interface, vnm, &locator.sw_if_index, - &locator.priority, &locator.weight)) - { - locator.local = 1; - vec_add1(locators, locator); - } + unformat_vnet_sw_interface, vnm, + &locator.sw_if_index, &locator.priority, + &locator.weight)) + { + locator.local = 1; + vec_add1 (locators, locator); + } else - { - error = unformat_parse_error(line_input); - goto done; - } + { + error = unformat_parse_error (line_input); + goto done; + } + } + + if (!locator_set_name_set) + { + error = clib_error_return (0, "locator_set name not set!"); + goto done; } a->name = locator_set_name; @@ -428,142 +2156,322 @@ lisp_add_del_locator_set_command_fn (vlib_main_t * vm, unformat_input_t * input, a->is_add = is_add; a->local = 1; - vnet_lisp_add_del_locator_set(a, &ls_index); + vnet_lisp_add_del_locator (a, 0, &ls_index); - done: - vec_free(locators); - vec_free(locator_set_name); +done: + vec_free (locators); + vec_free (locator_set_name); return error; } -VLIB_CLI_COMMAND (lisp_cp_add_del_locator_set_command) = { - .path = "lisp locator-set", - .short_help = "lisp locator-set add/del ", - .function = lisp_add_del_locator_set_command_fn, +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_cp_add_del_locator_in_set_command) = { + .path = "lisp locator", + .short_help = "lisp locator add/del locator-set iface " + "p w ", + .function = lisp_add_del_locator_in_set_command_fn, }; +/* *INDENT-ON* */ static clib_error_t * lisp_cp_show_locator_sets_command_fn (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) + unformat_input_t * input, + vlib_cli_command_t * cmd) { - locator_set_t * lsit; - locator_t * loc; - u32 * locit; - lisp_cp_main_t * lcm = vnet_lisp_cp_get_main(); + locator_set_t *lsit; + locator_t *loc; + u32 *locit; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); vlib_cli_output (vm, "%=20s%=16s%=16s%=16s", "Locator-set", "Locator", - "Priority", "Weight"); + "Priority", "Weight"); + + /* *INDENT-OFF* */ pool_foreach (lsit, lcm->locator_set_pool, ({ u8 * msg = 0; - msg = format (msg, "%-16v", lsit->name); + int next_line = 0; + if (lsit->local) + { + msg = format (msg, "%=16v", lsit->name); + } + else + { + msg = format (msg, "%=16s", "remote"); + } vec_foreach (locit, lsit->locator_indices) { + if (next_line) + { + msg = format (msg, "%16s", " "); + } loc = pool_elt_at_index (lcm->locator_pool, locit[0]); if (loc->local) - msg = format (msg, "%16d%16d%16d", loc->sw_if_index, loc->priority, + msg = format (msg, "%16d%16d%16d\n", loc->sw_if_index, loc->priority, loc->weight); else - msg = format (msg, "%16U%16d%16d", format_gid_address, &loc->address, - loc->priority, loc->weight); + msg = format (msg, "%16U%16d%16d\n", format_ip_address, + &gid_address_ip(&loc->address), loc->priority, + loc->weight); + next_line = 1; } vlib_cli_output (vm, "%v", msg); vec_free (msg); })); + /* *INDENT-ON* */ return 0; } +/* *INDENT-OFF* */ VLIB_CLI_COMMAND (lisp_cp_show_locator_sets_command) = { .path = "show lisp locator-set", .short_help = "Shows locator-sets", .function = lisp_cp_show_locator_sets_command_fn, }; +/* *INDENT-ON* */ + +static map_resolver_t * +get_map_resolver (ip_address_t * a) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + map_resolver_t *mr; + + vec_foreach (mr, lcm->map_resolvers) + { + if (!ip_address_cmp (&mr->address, a)) + { + return mr; + } + } + return 0; +} 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(); - ip_address_t * addr; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); u32 i; + map_resolver_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) { - vec_foreach(addr, lcm->map_resolvers) - { - if (!ip_address_cmp (addr, &a->address)) - { - clib_warning("map-resolver %U already exists!", format_ip_address, - &a->address); - return -1; - } - } - vec_add1(lcm->map_resolvers, a->address); + + if (get_map_resolver (&a->address)) + { + clib_warning ("map-resolver %U already exists!", format_ip_address, + &a->address); + return -1; + } + + 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++) - { - addr = vec_elt_at_index(lcm->map_resolvers, i); - if (!ip_address_cmp (addr, &a->address)) - { - vec_delete(lcm->map_resolvers, 1, i); - break; - } - } + 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; } static clib_error_t * lisp_add_del_map_resolver_command_fn (vlib_main_t * vm, - unformat_input_t * input, - vlib_cli_command_t * cmd) + unformat_input_t * input, + vlib_cli_command_t * cmd) { - unformat_input_t _line_input, * line_input = &_line_input; - u8 is_add = 1; + unformat_input_t _line_input, *line_input = &_line_input; + u8 is_add = 1, addr_set = 0; ip_address_t ip_addr; - clib_error_t * error = 0; - vnet_lisp_add_del_map_resolver_args_t _a, * a = &_a; + clib_error_t *error = 0; + int rv = 0; + vnet_lisp_add_del_map_resolver_args_t _a, *a = &_a; /* Get a line of input. */ - if (! unformat_user (input, unformat_line_input, line_input)) + if (!unformat_user (input, unformat_line_input, line_input)) return 0; while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "add")) - is_add = 1; + is_add = 1; else if (unformat (line_input, "del")) - is_add = 0; + is_add = 0; else if (unformat (line_input, "%U", unformat_ip_address, &ip_addr)) - ; + addr_set = 1; else - { - error = unformat_parse_error(line_input); - goto done; - } + { + error = unformat_parse_error (line_input); + goto done; + } + } + + if (!addr_set) + { + error = clib_error_return (0, "Map-resolver address must be set!"); + goto done; } + a->is_add = is_add; a->address = ip_addr; - vnet_lisp_add_del_map_resolver (a); + rv = vnet_lisp_add_del_map_resolver (a); + if (0 != rv) + { + error = clib_error_return (0, "failed to %s map-resolver!", + is_add ? "add" : "delete"); + } - done: +done: return error; } +/* *INDENT-OFF* */ VLIB_CLI_COMMAND (lisp_add_del_map_resolver_command) = { .path = "lisp map-resolver", .short_help = "lisp map-resolver add/del ", .function = lisp_add_del_map_resolver_command_fn, }; +/* *INDENT-ON* */ + +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; +} + +static clib_error_t * +lisp_add_del_mreq_itr_rlocs_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + u8 is_add = 1; + u8 *locator_set_name = 0; + clib_error_t *error = 0; + int rv = 0; + vnet_lisp_add_del_mreq_itr_rloc_args_t _a, *a = &_a; + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "del")) + is_add = 0; + else if (unformat (line_input, "add %s", &locator_set_name)) + is_add = 1; + else + { + error = unformat_parse_error (line_input); + goto done; + } + } + + a->is_add = is_add; + a->locator_set_name = locator_set_name; + rv = vnet_lisp_add_del_mreq_itr_rlocs (a); + if (0 != rv) + { + error = clib_error_return (0, "failed to %s map-request itr-rlocs!", + is_add ? "add" : "delete"); + } + + vec_free (locator_set_name); + +done: + return error; + +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_add_del_map_request_command) = { + .path = "lisp map-request itr-rlocs", + .short_help = "lisp map-request itr-rlocs add/del ", + .function = lisp_add_del_mreq_itr_rlocs_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +lisp_show_mreq_itr_rlocs_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + locator_set_t *loc_set; + + vlib_cli_output (vm, "%=20s", "itr-rlocs"); + + if (~0 == lcm->mreq_itr_rlocs) + { + return 0; + } + + loc_set = pool_elt_at_index (lcm->locator_set_pool, lcm->mreq_itr_rlocs); + + vlib_cli_output (vm, "%=20s", loc_set->name); + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_show_map_request_command) = { + .path = "show lisp map-request itr-rlocs", + .short_help = "Shows map-request itr-rlocs", + .function = lisp_show_mreq_itr_rlocs_command_fn, +}; +/* *INDENT-ON* */ /* Statistics (not really errors) */ #define foreach_lisp_cp_lookup_error \ _(DROP, "drop") \ _(MAP_REQUESTS_SENT, "map-request sent") -static char * lisp_cp_lookup_error_strings[] = { +static char *lisp_cp_lookup_error_strings[] = { #define _(sym,string) string, foreach_lisp_cp_lookup_error #undef _ @@ -572,7 +2480,7 @@ static char * lisp_cp_lookup_error_strings[] = { typedef enum { #define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym, - foreach_lisp_cp_lookup_error + foreach_lisp_cp_lookup_error #undef _ LISP_CP_LOOKUP_N_ERROR, } lisp_cp_lookup_error_t; @@ -588,7 +2496,7 @@ typedef enum typedef struct { gid_address_t dst_eid; - ip4_address_t map_resolver_ip; + ip_address_t map_resolver_ip; } lisp_cp_lookup_trace_t; u8 * @@ -596,111 +2504,105 @@ 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 *); + 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_ip4_address, &t->map_resolver_ip, format_gid_address, - &t->dst_eid); + format_ip_address, &t->map_resolver_ip, format_gid_address, + &t->dst_eid); return s; } -static u32 -ip_fib_lookup_with_table (lisp_cp_main_t * lcm, u32 fib_index, - ip_address_t * dst) -{ - if (ip_addr_version (dst) == IP4) - return ip4_fib_lookup_with_table (lcm->im4, fib_index, &ip_addr_v4(dst), - 0); - else - return ip6_fib_lookup_with_table (lcm->im6, fib_index, &ip_addr_v6(dst)); -} - -void -get_local_iface_ip_for_dst (lisp_cp_main_t *lcm, ip_address_t * dst, - ip_address_t * sloc) +int +get_mr_and_local_iface_ip (lisp_cp_main_t * lcm, ip_address_t * mr_ip, + ip_address_t * sloc) { - u32 adj_index; - ip_adjacency_t * adj; - ip_interface_address_t * ia = 0; - ip_lookup_main_t * lm = &lcm->im4->lookup_main; - ip4_address_t * l4 = 0; - ip6_address_t * l6 = 0; - - adj_index = ip_fib_lookup_with_table (lcm, 0, dst); - adj = ip_get_adjacency (lm, adj_index); - - if (adj->lookup_next_index == IP_LOOKUP_NEXT_ARP) - { - ia = pool_elt_at_index(lm->if_address_pool, adj->if_address_index); - if (ip_addr_version(dst) == IP4) - { - l4 = ip_interface_address_get_address (lm, ia); - } - else - { - l6 = ip_interface_address_get_address (lm, ia); - } - } - else if (adj->lookup_next_index == IP_LOOKUP_NEXT_REWRITE) - { - /* find sw_if_index in rewrite header */ - u32 sw_if_index = adj->rewrite_header.sw_if_index; - - /* find suitable address */ - if (ip_addr_version(dst) == IP4) - { - /* find the first ip address */ - foreach_ip_interface_address (&lcm->im4->lookup_main, ia, - sw_if_index, 1 /* unnumbered */, - ({ - l4 = ip_interface_address_get_address (&lcm->im4->lookup_main, ia); - break; - })); - } - else - { - /* find the first ip address */ - foreach_ip_interface_address (&lcm->im6->lookup_main, ia, - sw_if_index, 1 /* unnumbered */, - ({ - l6 = ip_interface_address_get_address (&lcm->im6->lookup_main, ia); - break; - })); - } - } - else - { - clib_warning("Can't find local local interface ip for dst %U", - format_ip_address, dst); - return; - } - - if (l4) - { - ip_addr_v4(sloc).as_u32 = l4->as_u32; - ip_addr_version(sloc) = IP4; - } - else if (l6) + map_resolver_t *mrit; + ip_address_t *a; + + if (vec_len (lcm->map_resolvers) == 0) { - memcpy (&ip_addr_v6(sloc), l6, sizeof(*l6)); - ip_addr_version(sloc) = IP6; + clib_warning ("No map-resolver configured"); + return 0; } - else + + /* 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); + + 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++) { - clib_warning("Can't find local interface addr for dst %U", - format_ip_address, dst); + 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, 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, IP6); + ip_prefix_len (ippref) = 128; + ip_prefix_normalize (ippref); + vec_add1 (rlocs, gid[0]); + })); + /* *INDENT-ON* */ + } + return rlocs; } static vlib_buffer_t * -build_encapsulated_map_request (vlib_main_t * vm, lisp_cp_main_t *lcm, - gid_address_t * seid, gid_address_t * deid, - locator_set_t * loc_set, u8 is_smr_invoked, - u64 *nonce_res, u32 * bi_res) +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; + vlib_buffer_t *b; u32 bi; - ip_address_t * mr_ip, sloc; + gid_address_t *rlocs = 0; + vlib_main_t *vm = lcm->vlib_main; if (vlib_buffer_alloc (vm, &bi, 1) != 1) { @@ -713,115 +2615,339 @@ build_encapsulated_map_request (vlib_main_t * vm, lisp_cp_main_t *lcm, /* 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); + /* put lisp msg */ - lisp_msg_put_mreq (lcm, b, seid, deid, loc_set, is_smr_invoked, nonce_res); + lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked, nonce_res); /* push ecm: udp-ip-lisp */ lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid); - /* get map-resolver ip XXX use first*/ - mr_ip = vec_elt_at_index(lcm->map_resolvers, 0); - - /* get local iface ip to use in map-request XXX fib 0 for now*/ - get_local_iface_ip_for_dst (lcm, mr_ip, &sloc); - /* push outer ip header */ - pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, &sloc, - mr_ip); + pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc, + mr_ip); bi_res[0] = bi; + + vec_free (rlocs); return b; } static void -send_encapsulated_map_request (vlib_main_t * vm, lisp_cp_main_t *lcm, - gid_address_t * seid, gid_address_t * deid, - u8 is_smr_invoked) +reset_pending_mr_counters (pending_map_request_t * r) +{ + r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME; + r->retries_num = 0; +} + +static int +elect_map_resolver (lisp_cp_main_t * lcm) +{ + map_resolver_t *mr; + + vec_foreach (mr, lcm->map_resolvers) + { + if (!mr->is_down) + { + ip_address_copy (&lcm->active_map_resolver, &mr->address); + lcm->do_map_resolver_election = 0; + return 1; + } + } + 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; + map_resolver_t *mr; + 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; + locator_set_t *loc_set; + mapping_t *map; + pending_map_request_t *pmr, *duplicate_pmr = 0; + ip_address_t sloc; + u32 ls_index; + + ASSERT (*lcm->pending_map_request_lock); + + /* 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; + } /* get locator-set for seid */ - map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid); - if (map_index == ~0) + if (!lcm->lisp_pitr) { - clib_warning("No local mapping found in eid-table for %U!", - format_gid_address, seid); - return; + 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 + { + map_index = lcm->pitr_map_index; + map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_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; } - map = pool_elt_at_index (lcm->mapping_pool, map_index); + loc_set = pool_elt_at_index (lcm->locator_set_pool, ls_index); - if (!map->local) + while (lcm->do_map_resolver_election + | (0 == ip_fib_get_first_egress_ip_for_dst (lcm, + &lcm->active_map_resolver, + &sloc))) { - clib_warning("Mapping found for src eid %U is not marked as local!", - format_gid_address, seid); - return; + if (0 == elect_map_resolver (lcm)) + /* all Mrs are down */ + { + if (duplicate_pmr) + duplicate_pmr->to_be_removed = 1; + + /* restart MR checking by marking all of them up */ + vec_foreach (mr, lcm->map_resolvers) mr->is_down = 0; + + return -1; + } } - loc_set = pool_elt_at_index (lcm->locator_set_pool, map->locator_set_index); /* build the encapsulated map request */ - b = build_encapsulated_map_request (vm, lcm, seid, deid, loc_set, - is_smr_invoked, &nonce, &bi); + b = build_encapsulated_map_request (lcm, seid, deid, loc_set, + &lcm->active_map_resolver, + &sloc, is_smr_invoked, &nonce, &bi); if (!b) - return; + return -1; - vnet_buffer(b)->sw_if_index[VLIB_TX] = ~0; - next_index = (ip_prefix_version(&gid_address_ippref(seid)) == IP4) ? - ip4_lookup_node.index : ip6_lookup_node.index; + /* 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) == IP4) ? + ip4_lookup_node.index : ip6_lookup_node.index; - f = vlib_get_frame_to_node (vm, next_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 (vm, next_index, f); + vlib_put_frame_to_node (lcm->vlib_main, next_index, f); + + 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); + 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); + } - /* add map-request to pending requests table */ - pool_get(lcm->pending_map_requests_pool, pmr); - gid_address_copy (&pmr->src, seid); - gid_address_copy (&pmr->dst, deid); - pmr->src_mapping_index = map_index; - hash_set(lcm->pending_map_requests_by_nonce, nonce, - pmr - lcm->pending_map_requests_pool); + return 0; } static void -get_src_and_dst (void *hdr, ip_address_t * src, ip_address_t *dst) +get_src_and_dst_ip (void *hdr, ip_address_t * src, ip_address_t * dst) { - ip4_header_t * ip4 = hdr; - ip6_header_t * ip6; + ip4_header_t *ip4 = hdr; + ip6_header_t *ip6; if ((ip4->ip_version_and_header_length & 0xF0) == 0x40) { - ip_addr_v4(src).as_u32 = ip4->src_address.as_u32; - ip_addr_version(src) = IP4; - ip_addr_v4(dst).as_u32 = ip4->dst_address.as_u32; - ip_addr_version(dst) = IP4; + ip_address_set (src, &ip4->src_address, IP4); + ip_address_set (dst, &ip4->dst_address, IP4); } else { ip6 = hdr; - memcpy (&ip_addr_v6(src), &ip6->src_address, sizeof(ip6->src_address)); - ip_addr_version(src) = IP6; - memcpy (&ip_addr_v6(dst), &ip6->dst_address, sizeof(ip6->dst_address)); - ip_addr_version(dst) = IP6; + ip_address_set (src, &ip6->src_address, IP6); + ip_address_set (dst, &ip6->dst_address, 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, fib_index; + + if (version == IP4) + { + ip4_fib_t *fib; + ip4_main_t *im4 = &ip4_main; + fib_index = vec_elt (im4->fib_index_by_sw_if_index, + vnet_buffer (b)->sw_if_index[VLIB_RX]); + fib = find_ip4_fib_by_table_index_or_id (im4, fib_index, + IP4_ROUTE_FLAG_FIB_INDEX); + table_id = fib->table_id; + } + else + { + ip6_fib_t *fib; + ip6_main_t *im6 = &ip6_main; + fib_index = vec_elt (im6->fib_index_by_sw_if_index, + vnet_buffer (b)->sw_if_index[VLIB_RX]); + fib = find_ip6_fib_by_table_index_or_id (im6, fib_index, + IP6_ROUTE_FLAG_FIB_INDEX); + table_id = fib->table_id; + } + + 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_vni_from_buffer_eth (lisp_cp_main_t * lcm, vlib_buffer_t * b) +{ + uword *vnip; + u32 vni = ~0; + 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); + + vnip = hash_get (lcm->vni_by_bd_id, bd_config->bd_id); + if (vnip) + vni = vnip[0]; + else + clib_warning ("bridge domain %d is not mapped to any vni!", + config->bd_index); + + return vni; +} + +always_inline 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) +{ + u32 vni = 0; + u16 type; + + memset (src, 0, sizeof (*src)); + memset (dst, 0, sizeof (*dst)); + type = vnet_buffer (b)->lisp.overlay_afi; + + 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_header_t *eh; + + eh = vlib_buffer_get_current (b); + + 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; } } static uword lisp_cp_lookup (vlib_main_t * vm, vlib_node_runtime_t * node, - vlib_frame_t * from_frame) + vlib_frame_t * from_frame) { - u32 * from, * to_next_drop; - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main(); + u32 *from, *to_next_drop, di, si; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); u32 pkts_mapped = 0; uword n_left_from, n_left_to_next_drop; @@ -831,61 +2957,88 @@ lisp_cp_lookup (vlib_main_t * vm, vlib_node_runtime_t * node, while (n_left_from > 0) { vlib_get_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP, - to_next_drop, n_left_to_next_drop); + to_next_drop, n_left_to_next_drop); while (n_left_from > 0 && n_left_to_next_drop > 0) - { - u32 pi0; - vlib_buffer_t * p0; - ip4_header_t * ip0; - gid_address_t src, dst; - ip_prefix_t * spref, * dpref; - - gid_address_type (&src) = IP_PREFIX; - spref = &gid_address_ippref(&src); - gid_address_type (&dst) = IP_PREFIX; - dpref = &gid_address_ippref(&dst); - - pi0 = from[0]; - from += 1; - n_left_from -= 1; - to_next_drop[0] = pi0; - to_next_drop += 1; - n_left_to_next_drop -= 1; - - p0 = vlib_get_buffer (vm, pi0); - p0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP]; - - /* src/dst eid pair */ - ip0 = vlib_buffer_get_current (p0); - get_src_and_dst (ip0, &ip_prefix_addr(spref), &ip_prefix_addr(dpref)); - ip_prefix_len(spref) = ip_address_max_len (ip_prefix_version(spref)); - ip_prefix_len(dpref) = ip_address_max_len (ip_prefix_version(dpref)); - - /* send map-request */ - send_encapsulated_map_request (vm, lcm, &src, &dst, 0); - - pkts_mapped++; - - if (PREDICT_FALSE(p0->flags & VLIB_BUFFER_IS_TRACED)) - { - lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, p0, - sizeof(*tr)); - gid_address_copy (&tr->dst_eid, &dst); - memcpy (&tr->map_resolver_ip, - vec_elt_at_index(lcm->map_resolvers, 0), - sizeof(ip_address_t)); - } - } - - vlib_put_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP, n_left_to_next_drop); + { + u32 pi0; + vlib_buffer_t *b0; + gid_address_t src, dst; + + pi0 = from[0]; + from += 1; + n_left_from -= 1; + to_next_drop[0] = pi0; + to_next_drop += 1; + n_left_to_next_drop -= 1; + + b0 = vlib_get_buffer (vm, pi0); + b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP]; + + /* src/dst eid pair */ + get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst); + + /* if we have remote mapping for destination already in map-chache + add forwarding tunnel directly. If not send a map-request */ + di = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst); + 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 */ ); + pkts_mapped++; + } + else + { + si = gid_dictionary_lookup (&lcm->mapping_index_by_gid, + &src); + if (~0 != si) + { + dp_add_fwd_entry (lcm, si, di); + } + } + } + else + { + /* send map-request */ + queue_map_request (&src, &dst, 0 /* smr_invoked */ , + 0 /* is_resend */ ); + pkts_mapped++; + } + + if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0, + sizeof (*tr)); + + memset (tr, 0, sizeof (*tr)); + gid_address_copy (&tr->dst_eid, &dst); + if (vec_len (lcm->map_resolvers) > 0) + { + clib_memcpy (&tr->map_resolver_ip, + vec_elt_at_index (lcm->map_resolvers, 0), + sizeof (ip_address_t)); + } + } + gid_address_free (&dst); + gid_address_free (&src); + } + + vlib_put_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP, + n_left_to_next_drop); } vlib_node_increment_counter (vm, node->node_index, - LISP_CP_LOOKUP_ERROR_MAP_REQUESTS_SENT, - pkts_mapped); + LISP_CP_LOOKUP_ERROR_MAP_REQUESTS_SENT, + pkts_mapped); return from_frame->n_vectors; } +/* *INDENT-OFF* */ VLIB_REGISTER_NODE (lisp_cp_lookup_node) = { .function = lisp_cp_lookup, .name = "lisp-cp-lookup", @@ -904,13 +3057,14 @@ VLIB_REGISTER_NODE (lisp_cp_lookup_node) = { [LISP_CP_LOOKUP_NEXT_IP6_LOOKUP] = "ip6-lookup", }, }; +/* *INDENT-ON* */ /* lisp_cp_input statistics */ -#define foreach_lisp_cp_input_error \ -_(DROP, "drop") \ +#define foreach_lisp_cp_input_error \ +_(DROP, "drop") \ _(MAP_REPLIES_RECEIVED, "map-replies received") -static char * lisp_cp_input_error_strings[] = { +static char *lisp_cp_input_error_strings[] = { #define _(sym,string) string, foreach_lisp_cp_input_error #undef _ @@ -919,7 +3073,7 @@ static char * lisp_cp_input_error_strings[] = { typedef enum { #define _(sym,str) LISP_CP_INPUT_ERROR_##sym, - foreach_lisp_cp_input_error + foreach_lisp_cp_input_error #undef _ LISP_CP_INPUT_N_ERROR, } lisp_cp_input_error_t; @@ -941,297 +3095,111 @@ 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 *); + 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; } -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_ip_addres (ip_lookup_main_t *lm, u32 sw_if_index, - u8 loop) -{ - ip_interface_address_t * ia = ip_interface_get_first_interface_address ( - lm, sw_if_index, loop); - return ip_interface_address_get_address (lm, ia); -} - -void -del_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; - fwd_entry_t * fe = 0; - uword * feip = 0; - 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->dlocator = fe->dst_loc; - a->slocator = fe->src_loc; - a->iid = 0; // XXX should be part of mapping/eid - gid_address_copy(&a->deid, &fe->deid); - - 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); - pool_put(lcm->fwd_entry_pool, fe); -} - -void -add_fwd_entry (lisp_cp_main_t* lcm, u32 src_map_index, u32 dst_map_index) -{ - mapping_t * src_map, * dst_map; - locator_set_t * dst_ls, * src_ls; - u32 i, minp = ~0; - locator_t * dl = 0; - uword * feip = 0; - vnet_lisp_gpe_add_del_fwd_entry_args_t _a, * a = &_a; - 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) - del_fwd_entry (lcm, src_map_index, dst_map_index); - - src_map = pool_elt_at_index (lcm->mapping_pool, src_map_index); - dst_map = pool_elt_at_index (lcm->mapping_pool, dst_map_index); - - /* XXX simple forwarding policy: first lowest (value) priority locator */ - dst_ls = pool_elt_at_index (lcm->locator_set_pool, - dst_map->locator_set_index); - for (i = 0; i < vec_len (dst_ls->locator_indices); i++) - { - u32 li = vec_elt (dst_ls->locator_indices, i); - locator_t * l = pool_elt_at_index (lcm->locator_pool, li); - if (l->priority < minp && gid_address_type(&l->address) == IP_PREFIX) - { - minp = l->priority; - dl = l; - } - } - if (dl) - { - src_ls = pool_elt_at_index (lcm->locator_set_pool, - src_map->locator_set_index); - for (i = 0; i < vec_len (src_ls->locator_indices); i++) - { - u32 li = vec_elt (src_ls->locator_indices, i); - locator_t * sl = pool_elt_at_index (lcm->locator_pool, li); - - if (ip_addr_version(&gid_address_ip(&dl->address)) == IP4) - { - ip4_address_t * l4; - l4 = ip_interface_get_first_ip_addres (&lcm->im4->lookup_main, - sl->sw_if_index, - 1 /* unnumbered */); - ip_addr_v4(&a->slocator) = *l4; - ip_addr_version(&a->slocator) = IP4; - } - else - { - ip6_address_t * l6; - l6 = ip_interface_get_first_ip_addres (&lcm->im6->lookup_main, - sl->sw_if_index, - 1 /* unnumbered */); - ip_addr_v6(&a->slocator) = *l6; - ip_addr_version(&a->slocator) = IP6; - } - } - } - /* insert data plane forwarding entry */ - u32 sw_if_index; - a->is_add = 1; - if (dl) - a->dlocator = gid_address_ip(&dl->address); - else - { - a->is_negative = 1; - a->action = dst_map->action; - } - - gid_address_copy (&a->deid, &dst_map->eid); - a->iid = 0; // XXX should be part of mapping/eid - u8 ipver = ip_prefix_version(&gid_address_ippref(&a->deid)); - a->decap_next_index = (ipver == IP4) ? - LISP_GPE_INPUT_NEXT_IP4_INPUT : LISP_GPE_INPUT_NEXT_IP6_INPUT; - /* XXX tunnels work only with IP4 now */ - vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index); - - /* add tunnel to fwd entry table XXX check return value from DP insertion */ - fwd_entry_t* fe; - pool_get (lcm->fwd_entry_pool, fe); - fe->dst_loc = a->dlocator; - fe->src_loc = a->slocator; - gid_address_copy (&fe->deid, &a->deid); - hash_set (lcm->fwd_entry_by_mapping_index, dst_map_index, - fe - lcm->fwd_entry_pool); -} - -/* 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; -} - -void -process_map_reply (lisp_cp_main_t * lcm, vlib_buffer_t * b) +process_map_reply (void *arg) { - u32 len = 0, i, ls_index = 0; - void * h; - vnet_lisp_add_del_locator_set_args_t _ls_arg, * ls_arg = &_ls_arg; - vnet_lisp_add_del_mapping_args_t _m_args, * m_args = &_m_args; - pending_map_request_t * pmr; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + vlib_buffer_t *b = arg; + u32 len = 0, i, ttl, dst_map_index = 0; + void *h; + pending_map_request_t *pmr; locator_t probed; - map_reply_hdr_t * mrep_hdr; - u64 nonce; - u32 dst_map_index, mi; - uword * pmr_index; + map_reply_hdr_t *mrep_hdr; + u64 nonce, *noncep; + gid_address_t deid; + uword *pmr_index; + u8 authoritative, action; + locator_t *locators = 0, *loc; mrep_hdr = vlib_buffer_get_current (b); + lisp_pending_map_request_lock (lcm); + /* Check pending requests table and nonce */ - nonce = MREP_NONCE(mrep_hdr); - pmr_index = hash_get(lcm->pending_map_requests_by_nonce, nonce); + nonce = MREP_NONCE (mrep_hdr); + pmr_index = hash_get (lcm->pending_map_requests_by_nonce, nonce); if (!pmr_index) { - clib_warning("No pending map-request entry with nonce %lu!", nonce); - return; + clib_warning ("No pending map-request entry with nonce %lu!", nonce); + goto done; } - pmr = pool_elt_at_index(lcm->pending_map_requests_pool, pmr_index[0]); + pmr = pool_elt_at_index (lcm->pending_map_requests_pool, pmr_index[0]); - vlib_buffer_pull (b, sizeof(*mrep_hdr)); + vlib_buffer_pull (b, sizeof (*mrep_hdr)); - for (i = 0; i < MREP_REC_COUNT(mrep_hdr); i++) + for (i = 0; i < MREP_REC_COUNT (mrep_hdr); i++) { - memset (ls_arg, 0, sizeof(*ls_arg)); - memset (m_args, 0, sizeof(*m_args)); - h = vlib_buffer_get_current (b); - m_args->ttl = clib_net_to_host_u32 (MAP_REC_TTL(h)); - m_args->action = MAP_REC_ACTION(h); - m_args->authoritative = MAP_REC_AUTH(h); + ttl = clib_net_to_host_u32 (MAP_REC_TTL (h)); + action = MAP_REC_ACTION (h); + authoritative = MAP_REC_AUTH (h); - len = lisp_msg_parse_mapping_record (b, &m_args->deid, &ls_arg->locators, - &probed); + len = lisp_msg_parse_mapping_record (b, &deid, &locators, &probed); if (len == ~0) - { - clib_warning ("Failed to parse mapping record!"); - vec_free(ls_arg->locators); - return; - } - - mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &m_args->deid); - - /* if mapping already exists, decide if locators (and forwarding) should - * be updated and be done */ - if (mi != ~0) - { - mapping_t * old_map; - locator_set_t * old_ls; - old_map = pool_elt_at_index(lcm->mapping_pool, mi); - - /* update mapping attributes */ - old_map->action = m_args->action; - old_map->authoritative = m_args->authoritative; - old_map->ttl = m_args->ttl; - - old_ls = pool_elt_at_index(lcm->locator_set_pool, - old_map->locator_set_index); - /* if the two locators are not equal, update them and forwarding - * otherwise there's nothing to be done */ - if (compare_locators (lcm, old_ls->locator_indices, ls_arg->locators)) - { - /* set locator-set index to overwrite */ - ls_arg->is_add = 1; - ls_arg->index = old_map->locator_set_index; - vnet_lisp_add_del_locator_set (ls_arg, 0); - add_fwd_entry (lcm, pmr->src_mapping_index, mi); - } - } - /* new mapping */ - else - { - /* add locator-set */ - ls_arg->is_add = 1; - ls_arg->index = ~0; - vnet_lisp_add_del_locator_set (ls_arg, &ls_index); - - /* add mapping */ - m_args->is_add = 1; - m_args->locator_set_index = ls_index; - vnet_lisp_add_del_mapping (m_args, &dst_map_index); - - /* add forwarding tunnel */ - add_fwd_entry (lcm, pmr->src_mapping_index, dst_map_index); - } - vec_free(ls_arg->locators); + { + clib_warning ("Failed to parse mapping record!"); + vec_foreach (loc, locators) + { + locator_free (loc); + } + vec_free (locators); + goto done; + } + + /* insert/update mappings cache */ + vnet_lisp_add_del_mapping (&deid, locators, action, authoritative, ttl, + 1, 0 /* is_static */ , &dst_map_index); + + /* try to program forwarding only if mapping saved or updated */ + if ((u32) ~ 0 != dst_map_index) + lisp_add_del_adjacency (lcm, &pmr->src, &deid, 1); + + vec_free (locators); } /* remove pending map request entry */ - hash_unset(lcm->pending_map_requests_by_nonce, nonce); - pool_put(lcm->pending_map_requests_pool, pmr); + + /* *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: + lisp_pending_map_request_unlock (lcm); + return 0; } void -process_map_request (vlib_main_t * vm, lisp_cp_main_t * lcm, vlib_buffer_t * b) +process_map_request (vlib_main_t * vm, lisp_cp_main_t * lcm, + vlib_buffer_t * b) { - map_request_hdr_t * mreq_hdr; + map_request_hdr_t *mreq_hdr; gid_address_t src, dst; // u64 nonce; u32 i, len = 0; - gid_address_t * itr_rlocs = 0; + gid_address_t *itr_rlocs = 0, *rloc; mreq_hdr = vlib_buffer_get_current (b); - vlib_buffer_pull (b, sizeof(*mreq_hdr)); + vlib_buffer_pull (b, sizeof (*mreq_hdr)); // nonce = MREQ_NONCE(mreq_hdr); - if (!MREQ_SMR(mreq_hdr)) { - clib_warning("Only SMR Map-Requests supported for now!"); + if (!MREQ_SMR (mreq_hdr)) + { + clib_warning ("Only SMR Map-Requests supported for now!"); return; - } + } /* parse src eid */ len = lisp_msg_parse_addr (b, &src); @@ -1239,32 +3207,54 @@ process_map_request (vlib_main_t * vm, lisp_cp_main_t * lcm, vlib_buffer_t * b) return; /* for now we don't do anything with the itr's rlocs */ - len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs, MREQ_ITR_RLOC_COUNT(mreq_hdr) + 1); + len = + lisp_msg_parse_itr_rlocs (b, &itr_rlocs, + MREQ_ITR_RLOC_COUNT (mreq_hdr) + 1); if (len == ~0) return; + /* TODO: RLOCs are currently unused, so free them for now */ + vec_foreach (rloc, itr_rlocs) + { + gid_address_free (rloc); + } + /* parse eid records and send SMR-invoked map-requests */ - for (i = 0; i < MREQ_REC_COUNT(mreq_hdr); i++) + for (i = 0; i < MREQ_REC_COUNT (mreq_hdr); i++) { - memset(&dst, 0, sizeof(dst)); + 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"); - return; - } + { + clib_warning ("Can't parse map-request EID-record"); + return; + } /* send SMR-invoked map-requests */ - send_encapsulated_map_request (vm, lcm, &dst, &src, /* invoked */ 1); + queue_map_request (&dst, &src, 1 /* invoked */ , 0 /* resend */ ); } } +static void +queue_map_reply (vlib_buffer_t * b) +{ + vlib_buffer_t *a = clib_mem_alloc (sizeof (a[0]) + b->current_length); + + clib_memcpy (a->data, b->data + b->current_data, b->current_length); + a->current_length = b->current_length; + a->current_data = 0; + + vl_api_rpc_call_main_thread (process_map_reply, (u8 *) a, sizeof (a[0]) + + a->current_length); + clib_mem_free (a); +} + static uword lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node, - vlib_frame_t * from_frame) + vlib_frame_t * from_frame) { - u32 n_left_from, * from, * to_next_drop; + u32 n_left_from, *from, *to_next_drop; lisp_msg_type_e type; - lisp_cp_main_t * lcm = vnet_lisp_cp_get_main(); + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); from = vlib_frame_vector_args (from_frame); n_left_from = from_frame->n_vectors; @@ -1275,48 +3265,50 @@ lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node, 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); + 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: - process_map_reply (lcm, b0); - break; - case LISP_MAP_REQUEST: - process_map_request(vm, lcm, b0); - 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); + { + 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: + queue_map_reply (b0); + break; + case LISP_MAP_REQUEST: + process_map_request (vm, lcm, b0); + 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); } return from_frame->n_vectors; } +/* *INDENT-OFF* */ VLIB_REGISTER_NODE (lisp_cp_input_node) = { .function = lisp_cp_input, .name = "lisp-cp-input", @@ -1333,12 +3325,13 @@ VLIB_REGISTER_NODE (lisp_cp_input_node) = { [LISP_CP_INPUT_NEXT_DROP] = "error-drop", }, }; +/* *INDENT-ON* */ clib_error_t * -lisp_cp_init (vlib_main_t *vm) +lisp_cp_init (vlib_main_t * vm) { - lisp_cp_main_t * lcm = vnet_lisp_cp_get_main(); - clib_error_t * error = 0; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + clib_error_t *error = 0; if ((error = vlib_call_init_function (vm, lisp_gpe_init))) return error; @@ -1346,17 +3339,195 @@ lisp_cp_init (vlib_main_t *vm) lcm->im4 = &ip4_main; lcm->im6 = &ip6_main; lcm->vlib_main = vm; - lcm->vnet_main = vnet_get_main(); + lcm->vnet_main = vnet_get_main (); + lcm->mreq_itr_rlocs = ~0; + lcm->lisp_pitr = 0; + lcm->pending_map_request_lock = + clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES, CLIB_CACHE_LINE_BYTES); + + lcm->pending_map_request_lock[0] = 0; gid_dictionary_init (&lcm->mapping_index_by_gid); - gid_dictionary_init (&lcm->mapping_index_by_gid); + lcm->do_map_resolver_election = 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); udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp, - lisp_cp_input_node.index, 1 /* is_ip4 */); + 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 */); + lisp_cp_input_node.index, 0 /* is_ip4 */ ); + + return 0; +} + +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 (); + + lisp_pending_map_request_lock (lcm); + + 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); + + lisp_pending_map_request_unlock (lcm); + + 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 (); + map_resolver_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; + + ASSERT (*lcm->pending_map_request_lock); + + /* *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_by_nonce, pmr_index[0]); + + vec_free (to_be_removed); +} + +static uword +send_map_resolver_service (vlib_main_t * vm, + vlib_node_runtime_t * rt, vlib_frame_t * f) +{ + 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); + + lisp_pending_map_request_lock (lcm); + + /* *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); + lisp_pending_map_request_unlock (lcm); + } + + /* unreachable */ return 0; } -VLIB_INIT_FUNCTION(lisp_cp_init); +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (lisp_retry_service_node,static) = { + .function = send_map_resolver_service, + .type = VLIB_NODE_TYPE_PROCESS, + .name = "lisp-retry-service", + .process_log2_n_stack_bytes = 16, +}; +/* *INDENT-ON* */ + +VLIB_INIT_FUNCTION (lisp_cp_init); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */