vpp - Vector Packet Processing

Age	Commit message (Collapse)	Author	Files	Lines
2017-09-19	Add C++ API	Klement Sekera	1	-0/+38
	Change-Id: Iff634f22d43470e2dc028387b3816257fd7b4156 Signed-off-by: Klement Sekera <ksekera@cisco.com>

/* *------------------------------------------------------------------ * mpls_api.c - mpls 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/mpls/mpls.h> #include <vnet/mpls/mpls_tunnel.h> #include <vnet/fib/fib_table.h> #include <vnet/fib/fib_api.h> #include <vnet/fib/mpls_fib.h> #include <vnet/fib/fib_path_list.h> #include <vnet/vnet_msg_enum.h> #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 \ _(MPLS_IP_BIND_UNBIND, mpls_ip_bind_unbind) \ _(MPLS_ROUTE_ADD_DEL, mpls_route_add_del) \ _(MPLS_TUNNEL_ADD_DEL, mpls_tunnel_add_del) \ _(MPLS_TUNNEL_DUMP, mpls_tunnel_dump) \ _(MPLS_FIB_DUMP, mpls_fib_dump) extern void stats_dslock_with_hint (int hint, int tag); extern void stats_dsunlock (void); static int mpls_ip_bind_unbind_handler (vnet_main_t * vnm, vl_api_mpls_ip_bind_unbind_t * mp) { u32 mpls_fib_index, ip_fib_index; mpls_fib_index = fib_table_find (FIB_PROTOCOL_MPLS, ntohl (mp->mb_mpls_table_id)); if (~0 == mpls_fib_index) { if (mp->mb_create_table_if_needed) { mpls_fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_MPLS, ntohl (mp->mb_mpls_table_id)); } else return VNET_API_ERROR_NO_SUCH_FIB; } ip_fib_index = fib_table_find ((mp->mb_is_ip4 ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6), ntohl (mp->mb_ip_table_id)); if (~0 == ip_fib_index) return VNET_API_ERROR_NO_SUCH_FIB; fib_prefix_t pfx = { .fp_len = mp->mb_address_length, }; if (mp->mb_is_ip4) { pfx.fp_proto = FIB_PROTOCOL_IP4; clib_memcpy (&pfx.fp_addr.ip4, mp->mb_address, sizeof (pfx.fp_addr.ip4)); } else { pfx.fp_proto = FIB_PROTOCOL_IP6; clib_memcpy (&pfx.fp_addr.ip6, mp->mb_address, sizeof (pfx.fp_addr.ip6)); } if (mp->mb_is_bind) fib_table_entry_local_label_add (ip_fib_index, &pfx, ntohl (mp->mb_label)); else fib_table_entry_local_label_remove (ip_fib_index, &pfx, ntohl (mp->mb_label)); return (0); } void vl_api_mpls_ip_bind_unbind_t_handler (vl_api_mpls_ip_bind_unbind_t * mp) { vl_api_mpls_ip_bind_unbind_reply_t *rmp; vnet_main_t *vnm; int rv; vnm = vnet_get_main (); vnm->api_errno = 0; rv = mpls_ip_bind_unbind_handler (vnm, mp); rv = (rv == 0) ? vnm->api_errno : rv; REPLY_MACRO (VL_API_MPLS_IP_BIND_UNBIND_REPLY); } static int mpls_route_add_del_t_handler (vnet_main_t * vnm, vl_api_mpls_route_add_del_t * mp) { u32 fib_index, next_hop_fib_index; mpls_label_t *label_stack = NULL; int rv, ii, n_labels;; fib_prefix_t pfx = { .fp_len = 21, .fp_proto = FIB_PROTOCOL_MPLS, .fp_eos = mp->mr_eos, .fp_label = ntohl (mp->mr_label), }; if (pfx.fp_eos) { if (mp->mr_next_hop_proto_is_ip4) { pfx.fp_payload_proto = DPO_PROTO_IP4; } else { pfx.fp_payload_proto = DPO_PROTO_IP6; } } else { pfx.fp_payload_proto = DPO_PROTO_MPLS; } rv = add_del_route_check (FIB_PROTOCOL_MPLS, mp->mr_table_id, mp->mr_next_hop_sw_if_index, dpo_proto_to_fib (pfx.fp_payload_proto), mp->mr_next_hop_table_id, mp->mr_create_table_if_needed, mp->mr_is_rpf_id, &fib_index, &next_hop_fib_index); if (0 != rv) return (rv); ip46_address_t nh; memset (&nh, 0, sizeof (nh)); if (mp->mr_next_hop_proto_is_ip4) memcpy (&nh.ip4, mp->mr_next_hop, sizeof (nh.ip4)); else memcpy (&nh.ip6, mp->mr_next_hop, sizeof (nh.ip6)); n_labels = mp->mr_next_hop_n_out_labels; if (n_labels == 0) ; else if (1 == n_labels) vec_add1 (label_stack, ntohl (mp->mr_next_hop_out_label_stack[0])); else { vec_validate (label_stack, n_labels - 1); for (ii = 0; ii < n_labels; ii++) label_stack[ii] = ntohl (mp->mr_next_hop_out_label_stack[ii]); } return (add_del_route_t_handler (mp->mr_is_multipath, mp->mr_is_add, 0, // mp->is_drop, 0, // mp->is_unreach, 0, // mp->is_prohibit, 0, // mp->is_local, mp->mr_is_multicast, mp->mr_is_classify, mp->mr_classify_table_index, mp->mr_is_resolve_host, mp->mr_is_resolve_attached, mp->mr_is_interface_rx, mp->mr_is_rpf_id, fib_index, &pfx, mp->mr_next_hop_proto_is_ip4, &nh, ntohl (mp->mr_next_hop_sw_if_index), next_hop_fib_index, mp->mr_next_hop_weight, mp->mr_next_hop_preference, ntohl (mp->mr_next_hop_via_label), label_stack)); } void vl_api_mpls_route_add_del_t_handler (vl_api_mpls_route_add_del_t * mp) { vl_api_mpls_route_add_del_reply_t *rmp; vnet_main_t *vnm; int rv; vnm = vnet_get_main (); vnm->api_errno = 0; rv = mpls_route_add_del_t_handler (vnm, mp); rv = (rv == 0) ? vnm->api_errno : rv; REPLY_MACRO (VL_API_MPLS_ROUTE_ADD_DEL_REPLY); } static void vl_api_mpls_tunnel_add_del_t_handler (vl_api_mpls_tunnel_add_del_t * mp) { vl_api_mpls_tunnel_add_del_reply_t *rmp; int rv = 0; u32 tunnel_sw_if_index; int ii; fib_route_path_t rpath, *rpaths = NULL; memset (&rpath, 0, sizeof (rpath)); stats_dslock_with_hint (1 /* release hint */ , 5 /* tag */ ); if (mp->mt_next_hop_proto_is_ip4) { rpath.frp_proto = FIB_PROTOCOL_IP4; clib_memcpy (&rpath.frp_addr.ip4, mp->mt_next_hop, sizeof (rpath.frp_addr.ip4)); } else { rpath.frp_proto = FIB_PROTOCOL_IP6; clib_memcpy (&rpath.frp_addr.ip6, mp->mt_next_hop, sizeof (rpath.frp_addr.ip6)); } rpath.frp_sw_if_index = ntohl (mp->mt_next_hop_sw_if_index); rpath.frp_weight = 1; if (mp->mt_is_add) { for (ii = 0; ii < mp->mt_next_hop_n_out_labels; ii++) vec_add1 (rpath.frp_label_stack, ntohl (mp->mt_next_hop_out_label_stack[ii])); } vec_add1 (rpaths, rpath); tunnel_sw_if_index = ntohl (mp->mt_sw_if_index); if (mp->mt_is_add) { if (~0 == tunnel_sw_if_index) tunnel_sw_if_index = vnet_mpls_tunnel_create (mp->mt_l2_only, mp->mt_is_multicast); vnet_mpls_tunnel_path_add (tunnel_sw_if_index, rpaths); } else { tunnel_sw_if_index = ntohl (mp->mt_sw_if_index); if (!vnet_mpls_tunnel_path_remove (tunnel_sw_if_index, rpaths)) vnet_mpls_tunnel_del (tunnel_sw_if_index); } vec_free (rpaths); stats_dsunlock (); /* *INDENT-OFF* */ REPLY_MACRO2(VL_API_MPLS_TUNNEL_ADD_DEL_REPLY, ({ rmp->sw_if_index = ntohl(tunnel_sw_if_index); })); /* *INDENT-ON* */ } typedef struct mpls_tunnel_send_walk_ctx_t_ { unix_shared_memory_queue_t *q; u32 index; u32 context; } mpls_tunnel_send_walk_ctx_t; static void send_mpls_tunnel_entry (u32 mti, void *arg) { fib_route_path_encode_t *api_rpaths, *api_rpath; mpls_tunnel_send_walk_ctx_t *ctx; vl_api_mpls_tunnel_details_t *mp; const mpls_tunnel_t *mt; vl_api_fib_path2_t *fp; u32 n; ctx = arg; if (~0 != ctx->index && mti != ctx->index) return; mt = mpls_tunnel_get (mti); n = fib_path_list_get_n_paths (mt->mt_path_list); mp = vl_msg_api_alloc (sizeof (*mp) + n * sizeof (vl_api_fib_path2_t)); memset (mp, 0, sizeof (*mp) + n * sizeof (vl_api_fib_path2_t)); mp->_vl_msg_id = ntohs (VL_API_MPLS_TUNNEL_DETAILS); mp->context = ctx->context; mp->mt_tunnel_index = ntohl (mti); mp->mt_count = ntohl (n); fib_path_list_walk (mt->mt_path_list, fib_path_encode, &api_rpaths); fp = mp->mt_paths; vec_foreach (api_rpath, api_rpaths) { memset (fp, 0, sizeof (*fp)); fp->weight = htonl (api_rpath->rpath.frp_weight); fp->sw_if_index = htonl (api_rpath->rpath.frp_sw_if_index); copy_fib_next_hop (api_rpath, fp); fp++; } // FIXME // memcpy (mp->mt_next_hop_out_labels, // mt->mt_label_stack, nlabels * sizeof (u32)); vl_msg_api_send_shmem (ctx->q, (u8 *) & mp); } static void vl_api_mpls_tunnel_dump_t_handler (vl_api_mpls_tunnel_dump_t * mp) { unix_shared_memory_queue_t *q; q = vl_api_client_index_to_input_queue (mp->client_index); if (q == 0) return; mpls_tunnel_send_walk_ctx_t ctx = { .q = q, .index = ntohl (mp->tunnel_index), .context = mp->context, }; mpls_tunnel_walk (send_mpls_tunnel_entry, &ctx); } static void send_mpls_fib_details (vpe_api_main_t * am, unix_shared_memory_queue_t * q, u32 table_id, u32 label, u32 eos, fib_route_path_encode_t * api_rpaths, u32 context) { vl_api_mpls_fib_details_t *mp; fib_route_path_encode_t *api_rpath; vl_api_fib_path2_t *fp; int path_count; path_count = vec_len (api_rpaths); mp = vl_msg_api_alloc (sizeof (*mp) + path_count * sizeof (*fp)); if (!mp) return; memset (mp, 0, sizeof (*mp)); mp->_vl_msg_id = ntohs (VL_API_MPLS_FIB_DETAILS); mp->context = context; mp->table_id = htonl (table_id); mp->eos_bit = eos; mp->label = htonl (label); mp->count = htonl (path_count); fp = mp->path; vec_foreach (api_rpath, api_rpaths) { memset (fp, 0, sizeof (*fp)); fp->weight = htonl (api_rpath->rpath.frp_weight); fp->sw_if_index = htonl (api_rpath->rpath.frp_sw_if_index); copy_fib_next_hop (api_rpath, fp); fp++; } vl_msg_api_send_shmem (q, (u8 *) & mp); } typedef struct vl_api_mpls_fib_dump_table_walk_ctx_t_ { fib_node_index_t *lfeis; } vl_api_mpls_fib_dump_table_walk_ctx_t; static int vl_api_mpls_fib_dump_table_walk (fib_node_index_t fei, void *arg) { vl_api_mpls_fib_dump_table_walk_ctx_t *ctx = arg; vec_add1 (ctx->lfeis, fei); return (1); } static void vl_api_mpls_fib_dump_t_handler (vl_api_mpls_fib_dump_t * mp) { vpe_api_main_t *am = &vpe_api_main; unix_shared_memory_queue_t *q; mpls_main_t *mm = &mpls_main; fib_table_t *fib_table; mpls_fib_t *mpls_fib; fib_node_index_t *lfeip = NULL; fib_prefix_t pfx; u32 fib_index; fib_route_path_encode_t *api_rpaths; vl_api_mpls_fib_dump_table_walk_ctx_t ctx = { .lfeis = NULL, }; q = vl_api_client_index_to_input_queue (mp->client_index); if (q == 0) return; /* *INDENT-OFF* */ pool_foreach (mpls_fib, mm->mpls_fibs, ({ mpls_fib_table_walk (mpls_fib, vl_api_mpls_fib_dump_table_walk, &ctx); })); /* *INDENT-ON* */ vec_sort_with_function (ctx.lfeis, fib_entry_cmp_for_sort); vec_foreach (lfeip, ctx.lfeis) { fib_entry_get_prefix (*lfeip, &pfx); fib_index = fib_entry_get_fib_index (*lfeip); fib_table = fib_table_get (fib_index, pfx.fp_proto); api_rpaths = NULL; fib_entry_encode (*lfeip, &api_rpaths); send_mpls_fib_details (am, q, fib_table->ft_table_id, pfx.fp_label, pfx.fp_eos, api_rpaths, mp->context); vec_free (api_rpaths); } vec_free (ctx.lfeis); } /* * mpls_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_mpls; #undef _ } static clib_error_t * mpls_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 _ /* * Trace space for 8 MPLS encap labels */ am->api_trace_cfg[VL_API_MPLS_TUNNEL_ADD_DEL].size += 8 * sizeof (u32); /* * Set up the (msg_name, crc, message-id) table */ setup_message_id_table (am); return 0; } VLIB_API_INIT_FUNCTION (mpls_api_hookup); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */