/* *------------------------------------------------------------------ * lisp_gpe_api.c - lisp_gpe api * * Copyright (c) 2016 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. *------------------------------------------------------------------ */ #include <vnet/vnet.h> #include <vlibmemory/api.h> #include <vnet/interface.h> #include <vnet/api_errno.h> #include <vnet/lisp-gpe/lisp_gpe.h> #include <vnet/lisp-gpe/lisp_gpe_adjacency.h> #include <vnet/lisp-gpe/lisp_gpe_tunnel.h> #include <vnet/lisp-gpe/lisp_gpe_fwd_entry.h> #include <vnet/lisp-gpe/lisp_gpe_tenant.h> #include <vnet/vnet_msg_enum.h> #define vl_api_gpe_locator_pair_t_endian vl_noop_handler #define vl_api_gpe_locator_pair_t_print vl_noop_handler #define vl_api_gpe_add_del_fwd_entry_t_endian vl_noop_handler #define vl_api_gpe_add_del_fwd_entry_t_print vl_noop_handler #define vl_typedefs /* define message structures */ #include <vnet/vnet_all_api_h.h> #undef vl_typedefs #define vl_endianfun /* define message structures */ #include <vnet/vnet_all_api_h.h> #undef vl_endianfun /* instantiate all the print functions we know about */ #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__) #define vl_printfun #include <vnet/vnet_all_api_h.h> #undef vl_printfun #include <vlibapi/api_helper_macros.h> #define foreach_vpe_api_msg \ _(GPE_ADD_DEL_FWD_ENTRY, gpe_add_del_fwd_entry) \ _(GPE_FWD_ENTRIES_GET, gpe_fwd_entries_get) \ _(GPE_FWD_ENTRY_PATH_DUMP, gpe_fwd_entry_path_dump) \ _(GPE_ENABLE_DISABLE, gpe_enable_disable) \ _(GPE_ADD_DEL_IFACE, gpe_add_del_iface) \ _(GPE_SET_ENCAP_MODE, gpe_set_encap_mode) \ _(GPE_GET_ENCAP_MODE, gpe_get_encap_mode) static locator_pair_t * unformat_gpe_loc_pairs (void *locs, u32 rloc_num) { u32 i; locator_pair_t *pairs = 0, pair, *p; vl_api_gpe_locator_t *r; for (i = 0; i < rloc_num; i++) { /* local locator */ r = &((vl_api_gpe_locator_t *) locs)[i]; memset (&pair, 0, sizeof (pair)); ip_address_set (&pair.lcl_loc, &r->addr, r->is_ip4 ? IP4 : IP6); pair.weight = r->weight; vec_add1 (pairs, pair); } for (i = rloc_num; i < rloc_num * 2; i++) { /* remote locators */ r = &((vl_api_gpe_locator_t *) locs)[i]; p = &pairs[i - rloc_num]; ip_address_set (&p->rmt_loc, &r->addr, r->is_ip4 ? IP4 : IP6); } return pairs; } static int unformat_lisp_eid_api (gid_address_t * dst, u32 vni, u8 type, void *src, u8 len) { switch (type) { case 0: /* ipv4 */ gid_address_type (dst) = GID_ADDR_IP_PREFIX; gid_address_ip_set (dst, src, IP4); gid_address_ippref_len (dst) = len; ip_prefix_normalize (&gid_address_ippref (dst)); break; case 1: /* ipv6 */ gid_address_type (dst) = GID_ADDR_IP_PREFIX; gid_address_ip_set (dst, src, IP6); gid_address_ippref_len (dst) = len; ip_prefix_normalize (&gid_address_ippref (dst)); break; case 2: /* l2 mac */ gid_address_type (dst) = GID_ADDR_MAC; clib_memcpy (&gid_address_mac (dst), src, 6); break; default: /* unknown type */ return VNET_API_ERROR_INVALID_VALUE; } gid_address_vni (dst) = vni; return 0; } static void gpe_fwd_entry_path_dump_t_net_to_host (vl_api_gpe_fwd_entry_path_dump_t * mp) { mp->fwd_entry_index = clib_net_to_host_u32 (mp->fwd_entry_index); } static void lisp_api_set_locator (vl_api_gpe_locator_t * loc, const ip_address_t * addr, u8 weight) { loc->weight = weight; if (IP4 == ip_addr_version (addr)) { loc->is_ip4 = 1; memcpy (loc->addr, addr, 4); } else { loc->is_ip4 = 0; memcpy (loc->addr, addr, 16); } } static void vl_api_gpe_fwd_entry_path_dump_t_handler (vl_api_gpe_fwd_entry_path_dump_t * mp) { lisp_fwd_path_t *path; vl_api_gpe_fwd_entry_path_details_t *rmp = NULL; lisp_gpe_main_t *lgm = &lisp_gpe_main; unix_shared_memory_queue_t *q = NULL; lisp_gpe_fwd_entry_t *lfe; gpe_fwd_entry_path_dump_t_net_to_host (mp); q = vl_api_client_index_to_input_queue (mp->client_index); if (q == 0) return; if (pool_is_free_index (lgm->lisp_fwd_entry_pool, mp->fwd_entry_index)) return; lfe = pool_elt_at_index (lgm->lisp_fwd_entry_pool, mp->fwd_entry_index); if (LISP_GPE_FWD_ENTRY_TYPE_NEGATIVE == lfe->type) return; vec_foreach (path, lfe->paths) { rmp = vl_msg_api_alloc (sizeof (*rmp)); memset (rmp, 0, sizeof (*rmp)); const lisp_gpe_tunnel_t *lgt; rmp->_vl_msg_id = clib_host_to_net_u16 (VL_API_GPE_FWD_ENTRY_PATH_DETAILS); const lisp_gpe_adjacency_t *ladj = lisp_gpe_adjacency_get (path->lisp_adj); lisp_api_set_locator (&rmp->rmt_loc, &ladj->remote_rloc, path->weight); lgt = lisp_gpe_tunnel_get (ladj->tunnel_index); lisp_api_set_locator (&rmp->lcl_loc, &lgt->key->lcl, path->weight); rmp->context = mp->context; vl_msg_api_send_shmem (q, (u8 *) & rmp); } } static void gpe_fwd_entries_copy (vl_api_gpe_fwd_entry_t * dst, lisp_api_gpe_fwd_entry_t * src) { lisp_api_gpe_fwd_entry_t *e; u32 i = 0; vec_foreach (e, src) { memset (dst, 0, sizeof (*dst)); dst[i].dp_table = src->dp_table; dst[i].fwd_entry_index = src->fwd_entry_index; switch (fid_addr_type (&e->leid)) { case FID_ADDR_IP_PREF: if (IP4 == ip_prefix_version (&fid_addr_ippref (&e->leid))) { memcpy (&dst[i].leid, &fid_addr_ippref (&e->leid), 4); memcpy (&dst[i].reid, &fid_addr_ippref (&e->reid), 4); dst[i].eid_type = 0; } else { memcpy (&dst[i].leid, &fid_addr_ippref (&e->leid), 16); memcpy (&dst[i].reid, &fid_addr_ippref (&e->reid), 16); dst[i].eid_type = 1; } dst[i].leid_prefix_len = ip_prefix_len (&fid_addr_ippref (&e->leid)); dst[i].reid_prefix_len = ip_prefix_len (&fid_addr_ippref (&e->reid)); break; case FID_ADDR_MAC: memcpy (&dst[i].leid, fid_addr_mac (&e->leid), 6); memcpy (&dst[i].reid, fid_addr_mac (&e->reid), 6); dst[i].eid_type = 2; break; default: clib_warning ("unknown fid type %d!", fid_addr_type (&e->leid)); break; } i++; } } static void gpe_fwd_entries_get_t_net_to_host (vl_api_gpe_fwd_entries_get_t * mp) { mp->vni = clib_net_to_host_u32 (mp->vni); } static void gpe_entry_t_host_to_net (vl_api_gpe_fwd_entry_t * e) { e->fwd_entry_index = clib_host_to_net_u32 (e->fwd_entry_index); e->dp_table = clib_host_to_net_u32 (e->dp_table); } static void gpe_fwd_entries_get_reply_t_host_to_net (vl_api_gpe_fwd_entries_get_reply_t * mp) { u32 i; vl_api_gpe_fwd_entry_t *e; for (i = 0; i < mp->count; i++) { e = &mp->entries[i]; gpe_entry_t_host_to_net (e); } mp->count = clib_host_to_net_u32 (mp->count); } static void vl_api_gpe_fwd_entries_get_t_handler (vl_api_gpe_fwd_entries_get_t * mp) { lisp_api_gpe_fwd_entry_t *e; vl_api_gpe_fwd_entries_get_reply_t *rmp = 0; u32 size = 0; int rv = 0; gpe_fwd_entries_get_t_net_to_host (mp); e = vnet_lisp_gpe_fwd_entries_get_by_vni (mp->vni); size = vec_len (e) * sizeof (vl_api_gpe_fwd_entry_t); /* *INDENT-OFF* */ REPLY_MACRO4 (VL_API_GPE_FWD_ENTRIES_GET_REPLY, size, { rmp->count = vec_len (e); gpe_fwd_entries_copy (rmp->entries, e); gpe_fwd_entries_get_reply_t_host_to_net (rmp); }); /* *INDENT-ON* */ vec_free (e); } static void gpe_add_del_fwd_entry_t_net_to_host (vl_api_gpe_add_del_fwd_entry_t * mp) { mp->vni = clib_net_to_host_u32 (mp->vni); mp->dp_table = clib_net_to_host_u32 (mp->dp_table); mp->loc_num = clib_net_to_host_u32 (mp->loc_num); } static void vl_api_gpe_add_del_fwd_entry_t_handler (vl_api_gpe_add_del_fwd_entry_t * mp) { vl_api_gpe_add_del_fwd_entry_reply_t *rmp; vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a; locator_pair_t *pairs = 0; int rv = 0; gpe_add_del_fwd_entry_t_net_to_host (mp); memset (a, 0, sizeof (a[0])); rv = unformat_lisp_eid_api (&a->rmt_eid, mp->vni, mp->eid_type, mp->rmt_eid, mp->rmt_len); rv |= unformat_lisp_eid_api (&a->lcl_eid, mp->vni, mp->eid_type, mp->lcl_eid, mp->lcl_len); if (mp->loc_num % 2 != 0) { rv = -1; goto send_reply; } pairs = unformat_gpe_loc_pairs (mp->locs, mp->loc_num / 2); if (rv || 0 == pairs) goto send_reply; a->is_add = mp->is_add; a->locator_pairs = pairs; a->dp_table = mp->dp_table; a->vni = mp->vni; a->action = mp->action; rv = vnet_lisp_gpe_add_del_fwd_entry (a, 0); vec_free (pairs); send_reply: REPLY_MACRO (VL_API_GPE_ADD_DEL_FWD_ENTRY_REPLY); } static void vl_api_gpe_enable_disable_t_handler (vl_api_gpe_enable_disable_t * mp) { vl_api_gpe_enable_disable_reply_t *rmp; int rv = 0; vnet_lisp_gpe_enable_disable_args_t _a, *a = &_a; a->is_en = mp->is_en; vnet_lisp_gpe_enable_disable (a); REPLY_MACRO (VL_API_GPE_ENABLE_DISABLE_REPLY); } static void vl_api_gpe_add_del_iface_t_handler (vl_api_gpe_add_del_iface_t * mp) { vl_api_gpe_add_del_iface_reply_t *rmp; int rv = 0; if (mp->is_l2) { if (mp->is_add) { if (~0 == lisp_gpe_tenant_l2_iface_add_or_lock (mp->vni, mp->dp_table)) rv = 1; } else lisp_gpe_tenant_l2_iface_unlock (mp->vni); } else { if (mp->is_add) { if (~0 == lisp_gpe_tenant_l3_iface_add_or_lock (mp->vni, mp->dp_table)) rv = 1; } else lisp_gpe_tenant_l3_iface_unlock (mp->vni); } REPLY_MACRO (VL_API_GPE_ADD_DEL_IFACE_REPLY); } static void vl_api_gpe_set_encap_mode_t_handler (vl_api_gpe_set_encap_mode_t * mp) { vl_api_gpe_set_encap_mode_reply_t *rmp; int rv = 0; rv = vnet_gpe_set_encap_mode (mp->mode); REPLY_MACRO (VL_API_GPE_SET_ENCAP_MODE_REPLY); } static void vl_api_gpe_get_encap_mode_t_handler (vl_api_gpe_get_encap_mode_t * mp) { vl_api_gpe_get_encap_mode_reply_t *rmp; int rv = 0; /* *INDENT-OFF* */ REPLY_MACRO2 (VL_API_GPE_GET_ENCAP_MODE_REPLY, ({ rmp->encap_mode = vnet_gpe_get_encap_mode (); })); /* *INDENT-ON* */ } /* * gpe_api_hookup * Add vpe's API message handlers to the table. * vlib has alread mapped shared memory and * added the client registration handlers. * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process() */ #define vl_msg_name_crc_list #include <vnet/vnet_all_api_h.h> #undef vl_msg_name_crc_list static void setup_message_id_table (api_main_t * am) { #define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id); foreach_vl_msg_name_crc_lisp_gpe; #undef _ } static clib_error_t * gpe_api_hookup (vlib_main_t * vm) { api_main_t *am = &api_main; #define _(N,n) \ vl_msg_api_set_handlers(VL_API_##N, #n, \ vl_api_##n##_t_handler, \ vl_noop_handler, \ vl_api_##n##_t_endian, \ vl_api_##n##_t_print, \ sizeof(vl_api_##n##_t), 1); foreach_vpe_api_msg; #undef _ /* * Set up the (msg_name, crc, message-id) table */ setup_message_id_table (am); return 0; } VLIB_API_INIT_FUNCTION (gpe_api_hookup); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */