diff options
Diffstat (limited to 'src')
22 files changed, 6330 insertions, 12 deletions
diff --git a/src/configure.ac b/src/configure.ac index f35e139a69c..4c9c25d5d98 100644 --- a/src/configure.ac +++ b/src/configure.ac @@ -315,11 +315,12 @@ PLUGIN_ENABLED(l2e) PLUGIN_ENABLED(lacp) PLUGIN_ENABLED(lb) PLUGIN_ENABLED(mactime) +PLUGIN_ENABLED(map) PLUGIN_ENABLED(marvell) PLUGIN_ENABLED(memif) -PLUGIN_ENABLED(pppoe) PLUGIN_ENABLED(nat) -PLUGIN_ENABLED(map) +PLUGIN_ENABLED(nsh) +PLUGIN_ENABLED(pppoe) PLUGIN_ENABLED(srv6ad) PLUGIN_ENABLED(srv6am) PLUGIN_ENABLED(srv6as) diff --git a/src/plugins/Makefile.am b/src/plugins/Makefile.am index 12f8ddfaef2..1000ee812a3 100644 --- a/src/plugins/Makefile.am +++ b/src/plugins/Makefile.am @@ -87,6 +87,10 @@ if ENABLE_MACTIME_PLUGIN include mactime.am endif +if ENABLE_MAP_PLUGIN +include map.am +endif + if ENABLE_MARVELL_PLUGIN include marvell.am endif @@ -95,6 +99,14 @@ if ENABLE_MEMIF_PLUGIN include memif.am endif +if ENABLE_NAT_PLUGIN +include nat.am +endif + +if ENABLE_NSH_PLUGIN +include nsh.am +endif + if ENABLE_PPPOE_PLUGIN include pppoe.am endif @@ -111,14 +123,6 @@ if ENABLE_SRV6AS_PLUGIN include srv6_as.am endif -if ENABLE_NAT_PLUGIN -include nat.am -endif - -if ENABLE_MAP_PLUGIN -include map.am -endif - if ENABLE_STN_PLUGIN include stn.am endif diff --git a/src/plugins/ioam.am b/src/plugins/ioam.am index 88439adfc64..62109589a23 100644 --- a/src/plugins/ioam.am +++ b/src/plugins/ioam.am @@ -213,8 +213,8 @@ ioam_test_plugin_la_SOURCES = \ ioam/ioam_test.c \ ioam/lib-pot/pot_test.c \ ioam/lib-pot/pot_plugin.api.h \ - ioam/lib-trace/trace_test.c \ - ioam/lib-trace/trace_plugin.api.h \ + ioam/lib-trace/trace_test.c \ + ioam/lib-trace/trace_plugin.api.h \ ioam/export/ioam_export_test.c \ ioam/export/ioam_export_plugin.api.h \ ioam/lib-vxlan-gpe/vxlan_gpe_test.c \ diff --git a/src/plugins/nsh.am b/src/plugins/nsh.am new file mode 100644 index 00000000000..fb1d558587a --- /dev/null +++ b/src/plugins/nsh.am @@ -0,0 +1,45 @@ +# Copyright (c) 2016 Intel 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. + +vppapitestplugins_LTLIBRARIES += nsh_test_plugin.la +vppplugins_LTLIBRARIES += nsh_plugin.la + +nsh_plugin_la_SOURCES = \ + nsh/nsh.c \ + nsh/nsh_pop.c \ + nsh/nsh_output.c \ + nsh/nsh-md2-ioam/nsh_md2_ioam.c \ + nsh/nsh-md2-ioam/nsh_md2_ioam_api.c \ + nsh/nsh-md2-ioam/md2_ioam_transit.c \ + nsh/nsh-md2-ioam/nsh_md2_ioam_trace.c \ + nsh/nsh-md2-ioam/export-nsh-md2-ioam/nsh_md2_ioam_export.c \ + nsh/nsh-md2-ioam/export-nsh-md2-ioam/nsh_md2_ioam_export_thread.c \ + nsh/nsh-md2-ioam/export-nsh-md2-ioam/nsh_md2_ioam_node.c + +BUILT_SOURCES += \ + nsh/nsh_packet.h \ + nsh/nsh.api.h \ + nsh/nsh.api.json \ + nsh/nsh-md2-ioam/nsh_md2_ioam.h \ + nsh/nsh-md2-ioam/nsh_md2_ioam_util.h + +API_FILES += nsh/nsh.api + +nobase_apiinclude_HEADERS += \ + nsh/nsh.api.h + +nsh_test_plugin_la_SOURCES = \ + nsh/nsh_test.c \ + nsh/nsh_plugin.api.h + +# vi:syntax=automake diff --git a/src/plugins/nsh/CMakeLists.txt b/src/plugins/nsh/CMakeLists.txt new file mode 100644 index 00000000000..866b3704c0d --- /dev/null +++ b/src/plugins/nsh/CMakeLists.txt @@ -0,0 +1,33 @@ +# Copyright (c) 2018 Cisco and/or its affiliates. +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at: +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +add_vpp_plugin(nsh + SOURCES + nsh.c + nsh_output.c + nsh_pop.c + nsh-md2-ioam/nsh_md2_ioam.c + nsh-md2-ioam/nsh_md2_ioam_api.c + nsh-md2-ioam/md2_ioam_transit.c + nsh-md2-ioam/nsh_md2_ioam_trace.c + nsh-md2-ioam/export-nsh-md2-ioam/nsh_md2_ioam_export.c + nsh-md2-ioam/export-nsh-md2-ioam/nsh_md2_ioam_export_thread.c + nsh-md2-ioam/export-nsh-md2-ioam/nsh_md2_ioam_node.c + + API_FILES + nsh.api + + API_TEST_SOURCES + nsh_test.c +) + diff --git a/src/plugins/nsh/nsh-md2-ioam/export-nsh-md2-ioam/nsh_md2_ioam_export.c b/src/plugins/nsh/nsh-md2-ioam/export-nsh-md2-ioam/nsh_md2_ioam_export.c new file mode 100644 index 00000000000..cb2bb2107c9 --- /dev/null +++ b/src/plugins/nsh/nsh-md2-ioam/export-nsh-md2-ioam/nsh_md2_ioam_export.c @@ -0,0 +1,177 @@ +/* + * 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. + */ +/* + *------------------------------------------------------------------ + * nsh_md2_ioam_export.c - ioam export API / debug CLI handling + *------------------------------------------------------------------ + */ + +#include <vnet/vnet.h> +#include <vnet/plugin/plugin.h> +#include <ioam/export-common/ioam_export.h> + +#include <vlibapi/api.h> +#include <vlibmemory/api.h> + +#include <nsh/nsh.h> +#include <nsh/nsh-md2-ioam/nsh_md2_ioam.h> + + +ioam_export_main_t nsh_md2_ioam_export_main; + + +extern vlib_node_registration_t nsh_md2_ioam_export_node; +extern void nsh_md2_set_next_ioam_export_override (uword next); +/* Action function shared between message handler and debug CLI */ +int +nsh_md2_ioam_export_enable_disable (ioam_export_main_t * em, + u8 is_disable, + ip4_address_t * collector_address, + ip4_address_t * src_address) +{ + vlib_main_t *vm = em->vlib_main; + u32 node_index = nsh_md2_ioam_export_node.index; + vlib_node_t *nsh_input_node = NULL; + + if (is_disable == 0) + { + if (em->my_hbh_slot == ~0) + { + /* Hook this export node to nsh-input */ + nsh_input_node = vlib_get_node_by_name (vm, (u8 *) "nsh-input"); + if (!nsh_input_node) + { + /* node does not exist give up */ + return (-1); + } + em->my_hbh_slot = + vlib_node_add_next (vm, nsh_input_node->index, node_index); + } + if (1 == ioam_export_header_create (em, collector_address, src_address)) + { + ioam_export_thread_buffer_init (em, vm); + nsh_md2_set_next_ioam_export_override (em->my_hbh_slot); + /* Turn on the export buffer check process */ + vlib_process_signal_event (vm, em->export_process_node_index, 1, 0); + + } + else + { + return (-2); + } + } + else + { + nsh_md2_set_next_ioam_export_override (0); // VXLAN_GPE_DECAP_IOAM_V4_NEXT_POP + ioam_export_header_cleanup (em, collector_address, src_address); + ioam_export_thread_buffer_free (em); + /* Turn off the export buffer check process */ + vlib_process_signal_event (vm, em->export_process_node_index, 2, 0); + + } + + return 0; +} + + + +static clib_error_t * +set_nsh_md2_ioam_export_ipfix_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + ioam_export_main_t *em = &nsh_md2_ioam_export_main; + ip4_address_t collector, src; + u8 is_disable = 0; + + collector.as_u32 = 0; + src.as_u32 = 0; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "collector %U", unformat_ip4_address, &collector)) + ; + else if (unformat (input, "src %U", unformat_ip4_address, &src)) + ; + else if (unformat (input, "disable")) + is_disable = 1; + else + break; + } + + if (collector.as_u32 == 0) + return clib_error_return (0, "collector address required"); + + if (src.as_u32 == 0) + return clib_error_return (0, "src address required"); + + em->ipfix_collector.as_u32 = collector.as_u32; + em->src_address.as_u32 = src.as_u32; + + vlib_cli_output (vm, "Collector %U, src address %U", + format_ip4_address, &em->ipfix_collector, + format_ip4_address, &em->src_address); + + /* Turn on the export timer process */ + // vlib_process_signal_event (vm, flow_report_process_node.index, + //1, 0); + if (0 != + nsh_md2_ioam_export_enable_disable (em, is_disable, &collector, &src)) + { + return clib_error_return (0, "Unable to set ioam nsh-md2 export"); + } + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (set_nsh_md2_ioam_ipfix_command, static) = +{ +.path = "set nsh-md2-ioam export ipfix", +.short_help = "set nsh-md2-ioam export ipfix collector <ip4-address> src <ip4-address>", +.function = set_nsh_md2_ioam_export_ipfix_command_fn, +}; +/* *INDENT-ON* */ + + +#define IPFIX_NSH_MD2_IOAM_EXPORT_ID 274 // TODO: Move this to ioam/ioam_export.h +static clib_error_t * +nsh_md2_ioam_export_init (vlib_main_t * vm) +{ + ioam_export_main_t *em = &nsh_md2_ioam_export_main; + clib_error_t *error = 0; + + em->set_id = IPFIX_NSH_MD2_IOAM_EXPORT_ID; + em->unix_time_0 = (u32) time (0); /* Store starting time */ + em->vlib_time_0 = vlib_time_now (vm); + + em->my_hbh_slot = ~0; + em->vlib_main = vm; + em->vnet_main = vnet_get_main (); + ioam_export_reset_next_node (em); + + return error; +} + +VLIB_INIT_FUNCTION (nsh_md2_ioam_export_init); + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/nsh/nsh-md2-ioam/export-nsh-md2-ioam/nsh_md2_ioam_export_thread.c b/src/plugins/nsh/nsh-md2-ioam/export-nsh-md2-ioam/nsh_md2_ioam_export_thread.c new file mode 100644 index 00000000000..c5dd1bc1130 --- /dev/null +++ b/src/plugins/nsh/nsh-md2-ioam/export-nsh-md2-ioam/nsh_md2_ioam_export_thread.c @@ -0,0 +1,50 @@ +/* + * Copyright (c) 2017 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. + */ +/* + * nsh_md2_ioam_export_thread.c + */ +#include <vnet/api_errno.h> +#include <vppinfra/pool.h> +#include <ioam/export-common/ioam_export.h> + +static vlib_node_registration_t nsh_md2_ioam_export_process_node; +extern ioam_export_main_t nsh_md2_ioam_export_main; + +static uword +nsh_md2_ioam_export_process (vlib_main_t * vm, + vlib_node_runtime_t * rt, vlib_frame_t * f) +{ + return (ioam_export_process_common (&nsh_md2_ioam_export_main, + vm, rt, f, + nsh_md2_ioam_export_process_node.index)); +} + + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (nsh_md2_ioam_export_process_node, static) = +{ + .function = nsh_md2_ioam_export_process, + .type = VLIB_NODE_TYPE_PROCESS, + .name = "nsh-md2-ioam-export-process", +}; +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/nsh/nsh-md2-ioam/export-nsh-md2-ioam/nsh_md2_ioam_node.c b/src/plugins/nsh/nsh-md2-ioam/export-nsh-md2-ioam/nsh_md2_ioam_node.c new file mode 100644 index 00000000000..f2910c3d9fb --- /dev/null +++ b/src/plugins/nsh/nsh-md2-ioam/export-nsh-md2-ioam/nsh_md2_ioam_node.c @@ -0,0 +1,155 @@ +/* + * Copyright (c) 2017 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 <vlib/vlib.h> +#include <vnet/vnet.h> +#include <vnet/pg/pg.h> +#include <vppinfra/error.h> +#include <vnet/ip/ip.h> +#include <nsh/nsh.h> +#include <nsh/nsh_packet.h> +#include <ioam/export-common/ioam_export.h> + +typedef struct +{ + u32 next_index; + u32 flow_label; +} export_trace_t; + +extern ioam_export_main_t nsh_md2_ioam_export_main; +vlib_node_registration_t export_node; +/* packet trace format function */ +static u8 * +format_export_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 *); + export_trace_t *t = va_arg (*args, export_trace_t *); + + s = format (s, "EXPORT: flow_label %d, next index %d", + t->flow_label, t->next_index); + return s; +} + +vlib_node_registration_t nsh_md2_ioam_export_node; + +#define foreach_export_error \ +_(RECORDED, "Packets recorded for export") + +typedef enum +{ +#define _(sym,str) EXPORT_ERROR_##sym, + foreach_export_error +#undef _ + EXPORT_N_ERROR, +} export_error_t; + +static char *export_error_strings[] = { +#define _(sym,string) string, + foreach_export_error +#undef _ +}; + +typedef enum +{ + EXPORT_NEXT_NSH_MD2_IOAM_INPUT, + EXPORT_N_NEXT, +} export_next_t; + +always_inline void +copy3cachelines (void *dst, const void *src, size_t n) +{ + + u64 *copy_dst, *copy_src; + int i; + copy_dst = (u64 *) dst; + copy_src = (u64 *) src; + if (PREDICT_FALSE (n < DEFAULT_EXPORT_SIZE)) + { + for (i = 0; i < n / 64; i++) + { + copy_dst[0] = copy_src[0]; + copy_dst[1] = copy_src[1]; + copy_dst[2] = copy_src[2]; + copy_dst[3] = copy_src[3]; + copy_dst[4] = copy_src[4]; + copy_dst[5] = copy_src[5]; + copy_dst[6] = copy_src[6]; + copy_dst[7] = copy_src[7]; + copy_dst += 8; + copy_src += 8; + } + return; + } + for (i = 0; i < 3; i++) + { + copy_dst[0] = copy_src[0]; + copy_dst[1] = copy_src[1]; + copy_dst[2] = copy_src[2]; + copy_dst[3] = copy_src[3]; + copy_dst[4] = copy_src[4]; + copy_dst[5] = copy_src[5]; + copy_dst[6] = copy_src[6]; + copy_dst[7] = copy_src[7]; + copy_dst += 8; + copy_src += 8; + } +} + +static void +nsh_md2_ioam_export_fixup_func (vlib_buffer_t * export_buf, + vlib_buffer_t * pak_buf) +{ + /* Todo: on implementing analyse */ +} + +static uword +nsh_md2_ioam_export_node_fn (vlib_main_t * vm, + vlib_node_runtime_t * node, vlib_frame_t * frame) +{ + ioam_export_main_t *em = &nsh_md2_ioam_export_main; + ioam_export_node_common (em, vm, node, frame, ip4_header_t, length, + ip_version_and_header_length, + EXPORT_NEXT_NSH_MD2_IOAM_INPUT, + nsh_md2_ioam_export_fixup_func); + return frame->n_vectors; +} + +/* + * Node for iOAM export + */ +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (nsh_md2_ioam_export_node) = +{ + .function = nsh_md2_ioam_export_node_fn, + .name = "nsh-md2-ioam-export", + .vector_size = sizeof (u32), + .format_trace = format_export_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_errors = ARRAY_LEN (export_error_strings), + .error_strings = export_error_strings, + .n_next_nodes = EXPORT_N_NEXT, + /* edit / add dispositions here */ + .next_nodes = + {[EXPORT_NEXT_NSH_MD2_IOAM_INPUT] = "nsh-pop"}, +}; +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/nsh/nsh-md2-ioam/md2_ioam_transit.c b/src/plugins/nsh/nsh-md2-ioam/md2_ioam_transit.c new file mode 100644 index 00000000000..9ea5447eba8 --- /dev/null +++ b/src/plugins/nsh/nsh-md2-ioam/md2_ioam_transit.c @@ -0,0 +1,195 @@ + /* + * Copyright (c) 2017 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 <vppinfra/error.h> +#include <vppinfra/hash.h> +#include <vnet/vnet.h> +#include <vnet/ip/ip.h> +#include <vnet/udp/udp.h> +#include <vnet/ethernet/ethernet.h> +#include <vnet/lisp-gpe/lisp_gpe.h> +#include <vnet/lisp-gpe/lisp_gpe_packet.h> +#include <nsh/nsh.h> +#include <nsh/nsh_packet.h> +#include <nsh/nsh-md2-ioam/nsh_md2_ioam.h> +#include <nsh/nsh-md2-ioam/nsh_md2_ioam_util.h> +#include <vnet/fib/ip6_fib.h> +#include <vnet/fib/ip4_fib.h> +#include <vnet/fib/fib_entry.h> + +/* Statistics (not really errors) */ +#define foreach_nsh_md2_ioam_encap_transit_error \ +_(ENCAPSULATED, "good packets encapsulated") + +static char *nsh_md2_ioam_encap_transit_error_strings[] = { +#define _(sym,string) string, + foreach_nsh_md2_ioam_encap_transit_error +#undef _ +}; + +typedef enum +{ +#define _(sym,str) NSH_MD2_IOAM_ENCAP_TRANSIT_IOAM_ERROR_##sym, + foreach_nsh_md2_ioam_encap_transit_error +#undef _ + NSH_MD2_IOAM_ENCAP_TRANSIT_IOAM_N_ERROR, +} nsh_md2_ioam_encap_transit_error_t; + +typedef enum +{ + NSH_MD2_IOAM_ENCAP_TRANSIT_IOAM_NEXT_OUTPUT, + NSH_MD2_IOAM_ENCAP_TRANSIT_IOAM_NEXT_DROP, + NSH_MD2_IOAM_ENCAP_TRANSIT_IOAM_N_NEXT +} nsh_md2_ioam_encap_transit_next_t; + + +/* *INDENT-OFF* */ +VNET_FEATURE_INIT (nsh_md2_ioam_encap_transit, static) = +{ + .arc_name = "ip4-output", + .node_name = "nsh-md2-ioam-encap-transit", + .runs_before = VNET_FEATURES ("adj-midchain-tx"), +}; +/* *INDENT-ON* */ + + +static uword +nsh_md2_ioam_encap_transit (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + u32 n_left_from, next_index, *from, *to_next; + + from = vlib_frame_vector_args (from_frame); + n_left_from = from_frame->n_vectors; + + next_index = node->cached_next_index; + + while (n_left_from > 0) + { + u32 n_left_to_next; + + vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + + + while (n_left_from > 0 && n_left_to_next > 0) + { + u32 bi0; + vlib_buffer_t *b0; + u32 next0 = NSH_MD2_IOAM_ENCAP_TRANSIT_IOAM_NEXT_OUTPUT; + + bi0 = from[0]; + to_next[0] = bi0; + from += 1; + to_next += 1; + n_left_from -= 1; + n_left_to_next -= 1; + ip4_header_t *ip0; + u32 iph_offset = 0; + + b0 = vlib_get_buffer (vm, bi0); + iph_offset = vnet_buffer (b0)->ip.save_rewrite_length; + ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) + + iph_offset); + + /* just forward non ipv4 packets */ + if (PREDICT_FALSE + ((ip0->ip_version_and_header_length & 0xF0) == 0x40)) + { + /* ipv4 packets */ + udp_header_t *udp_hdr0 = (udp_header_t *) (ip0 + 1); + if (PREDICT_FALSE + ((ip0->protocol == IP_PROTOCOL_UDP) && + (clib_net_to_host_u16 (udp_hdr0->dst_port) == + UDP_DST_PORT_lisp_gpe))) + { + + /* Check the iOAM header */ + lisp_gpe_header_t *lisp_gpe_hdr0 = + (lisp_gpe_header_t *) (udp_hdr0 + 1); + nsh_base_header_t *nsh_hdr = + (nsh_base_header_t *) (lisp_gpe_hdr0 + 1); + + if (PREDICT_FALSE + (lisp_gpe_hdr0->next_protocol == + LISP_GPE_NEXT_PROTO_NSH) && (nsh_hdr->md_type == 2)) + { + uword *t = NULL; + nsh_md2_ioam_main_t *hm = &nsh_md2_ioam_main; + fib_prefix_t key4; + memset (&key4, 0, sizeof (key4)); + key4.fp_proto = FIB_PROTOCOL_IP4; + key4.fp_addr.ip4.as_u32 = ip0->dst_address.as_u32; + t = hash_get_mem (hm->dst_by_ip4, &key4); + if (t) + { + vlib_buffer_advance (b0, + (word) (sizeof + (ethernet_header_t))); + nsh_md2_ioam_encap_decap_ioam_v4_one_inline (vm, + node, + b0, + &next0, + NSH_MD2_IOAM_ENCAP_TRANSIT_IOAM_NEXT_DROP, + 1 + /* use_adj */ + ); + vlib_buffer_advance (b0, + -(word) (sizeof + (ethernet_header_t))); + } + } + } + } + + vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, + n_left_to_next, bi0, next0); + } + + vlib_put_next_frame (vm, node, next_index, n_left_to_next); + } + + return from_frame->n_vectors; +} + +extern u8 *format_nsh_node_map_trace (u8 * s, va_list * args); +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (nsh_md2_ioam_encap_transit_node) = { + .function = nsh_md2_ioam_encap_transit, + .name = "nsh-md2-ioam-encap-transit", + .vector_size = sizeof (u32), + .format_trace = format_nsh_node_map_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = ARRAY_LEN(nsh_md2_ioam_encap_transit_error_strings), + .error_strings = nsh_md2_ioam_encap_transit_error_strings, + + .n_next_nodes = NSH_MD2_IOAM_ENCAP_TRANSIT_IOAM_N_NEXT, + + .next_nodes = { + [NSH_MD2_IOAM_ENCAP_TRANSIT_IOAM_NEXT_OUTPUT] = "interface-output", + [NSH_MD2_IOAM_ENCAP_TRANSIT_IOAM_NEXT_DROP] = "error-drop", + }, + +}; +/* *INDENT-ON* */ + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/nsh/nsh-md2-ioam/nsh_md2_ioam.c b/src/plugins/nsh/nsh-md2-ioam/nsh_md2_ioam.c new file mode 100644 index 00000000000..1fa1c55b00f --- /dev/null +++ b/src/plugins/nsh/nsh-md2-ioam/nsh_md2_ioam.c @@ -0,0 +1,508 @@ +/* + * nsh_md2_ioam.c - NSH iOAM functions for MD type 2 + * + * Copyright (c) 2017 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 <vnet/plugin/plugin.h> +#include <nsh/nsh.h> +#include <nsh/nsh_packet.h> +#include <vnet/ip/ip.h> +#include <nsh/nsh-md2-ioam/nsh_md2_ioam.h> + +#include <vlibapi/api.h> +#include <vlibmemory/api.h> + +#include <vnet/fib/ip6_fib.h> +#include <vnet/fib/ip4_fib.h> +#include <vnet/fib/fib_entry.h> + +/* define message structures */ +#define vl_typedefs +#include <nsh/nsh.api.h> +#undef vl_typedefs + +/* define generated endian-swappers */ +#define vl_endianfun +#include <nsh/nsh.api.h> +#undef vl_endianfun + +nsh_md2_ioam_main_t nsh_md2_ioam_main; + +static void +nsh_md2_ioam_set_clear_output_feature_on_intf (vlib_main_t * vm, + u32 sw_if_index0, + u8 is_add) +{ + + + + vnet_feature_enable_disable ("ip4-output", + "nsh-md2-ioam-encap-transit", + sw_if_index0, is_add, + 0 /* void *feature_config */ , + 0 /* u32 n_feature_config_bytes */ ); + return; +} + +void +nsh_md2_ioam_clear_output_feature_on_all_intfs (vlib_main_t * vm) +{ + vnet_sw_interface_t *si = 0; + vnet_main_t *vnm = vnet_get_main (); + vnet_interface_main_t *im = &vnm->interface_main; + + pool_foreach (si, im->sw_interfaces, ( + { + nsh_md2_ioam_set_clear_output_feature_on_intf + (vm, si->sw_if_index, 0); + })); + return; +} + + +extern fib_forward_chain_type_t +fib_entry_get_default_chain_type (const fib_entry_t * fib_entry); + +int +nsh_md2_ioam_enable_disable_for_dest (vlib_main_t * vm, + ip46_address_t dst_addr, + u32 outer_fib_index, + u8 is_ipv4, u8 is_add) +{ + nsh_md2_ioam_main_t *hm = &nsh_md2_ioam_main; + u32 fib_index0 = 0; + + fib_node_index_t fei = ~0; + u32 *sw_if_index0 = NULL; +#if 0 + fib_entry_t *fib_entry; + u32 adj_index0; + ip_adjacency_t *adj0; + load_balance_t *lb_m, *lb_b; + const dpo_id_t *dpo0, *dpo1; + u32 i, j, k; +#endif + u32 *intf_list = NULL; + fib_prefix_t fib_prefix; + + if (is_ipv4) + { + memset (&fib_prefix, 0, sizeof (fib_prefix_t)); + fib_prefix.fp_len = 32; + fib_prefix.fp_proto = FIB_PROTOCOL_IP4; +#define TRANSIT_UNIT_TEST_HACK 1 +#ifdef TRANSIT_UNIT_TEST_HACK + memset(&dst_addr, 0, sizeof(dst_addr)); + dst_addr.ip4.as_u32 = clib_net_to_host_u32(0x14020102); +#endif + fib_prefix.fp_addr = dst_addr; + } + else + { + return 0; + } + + fei = fib_table_lookup (fib_index0, &fib_prefix); +#if 0 + fib_entry = fib_entry_get (fei); + + + if (!dpo_id_is_valid (&fib_entry->fe_lb)) + { + return (-1); + } + + lb_m = load_balance_get (fib_entry->fe_lb.dpoi_index); + + for (i = 0; i < lb_m->lb_n_buckets; i++) + { + dpo0 = load_balance_get_bucket_i (lb_m, i); + + if (dpo0->dpoi_type == DPO_LOAD_BALANCE || + dpo0->dpoi_type == DPO_ADJACENCY) + { + if (dpo0->dpoi_type == DPO_ADJACENCY) + { + k = 1; + } + else + { + lb_b = load_balance_get (dpo0->dpoi_index); + k = lb_b->lb_n_buckets; + } + + for (j = 0; j < k; j++) + { + if (dpo0->dpoi_type == DPO_ADJACENCY) + { + dpo1 = dpo0; + } + else + { + dpo1 = load_balance_get_bucket_i (lb_b, j); + } + + if (dpo1->dpoi_type == DPO_ADJACENCY) + { + adj_index0 = dpo1->dpoi_index; + + if (ADJ_INDEX_INVALID == adj_index0) + { + continue; + } + + adj0 = + ip_get_adjacency (&(ip4_main.lookup_main), adj_index0); + sw_if_index0 = adj0->rewrite_header.sw_if_index; + + if (~0 == sw_if_index0) + { + continue; + } + + + if (is_add) + { + vnet_feature_enable_disable ("ip4-output", + "nsh-md2-ioam-encap-transit", + sw_if_index0, is_add, 0, + /* void *feature_config */ + 0 /* u32 n_feature_config_bytes */ + ); + + vec_validate_init_empty (hm->bool_ref_by_sw_if_index, + sw_if_index0, ~0); + hm->bool_ref_by_sw_if_index[sw_if_index0] = 1; + } + else + { + hm->bool_ref_by_sw_if_index[sw_if_index0] = ~0; + } + } + } + } + } +#else + +u32 fib_path_get_resolving_interface (fib_node_index_t path_index); + vec_add1(intf_list, fib_path_get_resolving_interface(fei)); + vec_foreach(sw_if_index0, intf_list) + if (is_add) + { + vnet_feature_enable_disable ("ip4-output", + "nsh-md2-ioam-encap-transit", + *sw_if_index0, is_add, 0, + /* void *feature_config */ + 0 /* u32 n_feature_config_bytes */ + ); + + vec_validate_init_empty (hm->bool_ref_by_sw_if_index, + *sw_if_index0, ~0); + hm->bool_ref_by_sw_if_index[*sw_if_index0] = 1; + } + else + { + hm->bool_ref_by_sw_if_index[*sw_if_index0] = ~0; + } + +#endif + + if (is_ipv4) + { + uword *t = NULL; + nsh_md2_ioam_dest_tunnels_t *t1; + fib_prefix_t key4, *key4_copy; + hash_pair_t *hp; + memset (&key4, 0, sizeof (key4)); + key4.fp_proto = FIB_PROTOCOL_IP4; + key4.fp_addr.ip4.as_u32 = fib_prefix.fp_addr.ip4.as_u32; + t = hash_get_mem (hm->dst_by_ip4, &key4); + if (is_add) + { + if (t) + { + return 0; + } + pool_get_aligned (hm->dst_tunnels, t1, CLIB_CACHE_LINE_BYTES); + memset (t1, 0, sizeof (*t1)); + t1->fp_proto = FIB_PROTOCOL_IP4; + t1->dst_addr.ip4.as_u32 = fib_prefix.fp_addr.ip4.as_u32; + key4_copy = clib_mem_alloc (sizeof (*key4_copy)); + memset(key4_copy, 0, sizeof(*key4_copy)); + clib_memcpy (key4_copy, &key4, sizeof (*key4_copy)); + hash_set_mem (hm->dst_by_ip4, key4_copy, t1 - hm->dst_tunnels); + /* + * Attach to the FIB entry for the VxLAN-GPE destination + * and become its child. The dest route will invoke a callback + * when the fib entry changes, it can be used to + * re-program the output feature on the egress interface. + */ + + const fib_prefix_t tun_dst_pfx = { + .fp_len = 32, + .fp_proto = FIB_PROTOCOL_IP4, + .fp_addr = {.ip4 = t1->dst_addr.ip4,} + }; + + t1->fib_entry_index = + fib_table_entry_special_add (outer_fib_index, + &tun_dst_pfx, + FIB_SOURCE_RR, + FIB_ENTRY_FLAG_NONE); + t1->sibling_index = + fib_entry_child_add (t1->fib_entry_index, + hm->fib_entry_type, t1 - hm->dst_tunnels); + t1->outer_fib_index = outer_fib_index; + + } + else + { + if (!t) + { + return 0; + } + t1 = pool_elt_at_index (hm->dst_tunnels, t[0]); + hp = hash_get_pair (hm->dst_by_ip4, &key4); + key4_copy = (void *) (hp->key); + hash_unset_mem (hm->dst_by_ip4, &key4); + clib_mem_free (key4_copy); + pool_put (hm->dst_tunnels, t1); + } + } + else + { + // TBD for IPv6 + } + + return 0; +} + +void +nsh_md2_ioam_refresh_output_feature_on_all_dest (void) +{ + nsh_md2_ioam_main_t *hm = &nsh_md2_ioam_main; + nsh_main_t *gm = &nsh_main; + nsh_md2_ioam_dest_tunnels_t *t; + u32 i; + + if (pool_elts (hm->dst_tunnels) == 0) + return; + + nsh_md2_ioam_clear_output_feature_on_all_intfs (gm->vlib_main); + i = vec_len (hm->bool_ref_by_sw_if_index); + vec_free (hm->bool_ref_by_sw_if_index); + vec_validate_init_empty (hm->bool_ref_by_sw_if_index, i, ~0); + pool_foreach (t, hm->dst_tunnels, ( + { + nsh_md2_ioam_enable_disable_for_dest + (gm->vlib_main, + t->dst_addr, + t->outer_fib_index, + (t->fp_proto == FIB_PROTOCOL_IP4), 1 + /* is_add */ + ); + } + )); + return; +} + +void +nsh_md2_ioam_clear_output_feature_on_select_intfs (void) +{ + nsh_md2_ioam_main_t *hm = &nsh_md2_ioam_main; + nsh_main_t *gm = &nsh_main; + + u32 sw_if_index0 = 0; + for (sw_if_index0 = 0; + sw_if_index0 < vec_len (hm->bool_ref_by_sw_if_index); sw_if_index0++) + { + if (hm->bool_ref_by_sw_if_index[sw_if_index0] == 0xFF) + { + nsh_md2_ioam_set_clear_output_feature_on_intf + (gm->vlib_main, sw_if_index0, 0); + } + } + + return; +} + + + + +clib_error_t * +nsh_md2_ioam_enable_disable (int has_trace_option, int has_pot_option, + int has_ppc_option) +{ + nsh_md2_ioam_main_t *hm = &nsh_md2_ioam_main; + + hm->has_trace_option = has_trace_option; + hm->has_pot_option = has_pot_option; + hm->has_ppc_option = has_ppc_option; + + if (hm->has_trace_option) + { + nsh_md2_ioam_trace_profile_setup (); + } + else if (!hm->has_trace_option) + { + nsh_md2_ioam_trace_profile_cleanup (); + } + + return 0; +} + + +int nsh_md2_ioam_disable_for_dest + (vlib_main_t * vm, ip46_address_t dst_addr, u32 outer_fib_index, + u8 ipv4_set) +{ + nsh_md2_ioam_dest_tunnels_t *t; + nsh_md2_ioam_main_t *hm = &nsh_md2_ioam_main; + nsh_main_t *gm = &nsh_main; + + nsh_md2_ioam_enable_disable_for_dest (gm->vlib_main, + dst_addr, outer_fib_index, + ipv4_set, 0); + if (pool_elts (hm->dst_tunnels) == 0) + { + nsh_md2_ioam_clear_output_feature_on_select_intfs (); + return 0; + } + + pool_foreach (t, hm->dst_tunnels, ( + { + nsh_md2_ioam_enable_disable_for_dest + (gm->vlib_main, + t->dst_addr, + t->outer_fib_index, + (t->fp_proto == + FIB_PROTOCOL_IP4), 1 /* is_add */ ); + } + )); + nsh_md2_ioam_clear_output_feature_on_select_intfs (); + return (0); + +} + +static clib_error_t *nsh_md2_ioam_set_transit_rewrite_command_fn + (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) +{ + nsh_main_t *gm = &nsh_main; + ip46_address_t dst_addr; + u8 dst_addr_set = 0; + u8 ipv4_set = 0; + u8 ipv6_set = 0; + u8 disable = 0; + clib_error_t *rv = 0; + u32 outer_fib_index = 0; + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "dst-ip %U", unformat_ip4_address, &dst_addr.ip4)) + { + dst_addr_set = 1; + ipv4_set = 1; + } + else + if (unformat + (input, "dst-ip %U", unformat_ip6_address, &dst_addr.ip6)) + { + dst_addr_set = 1; + ipv6_set = 1; + } + else if (unformat (input, "outer-fib-index %d", &outer_fib_index)) + { + } + + else if (unformat (input, "disable")) + disable = 1; + else + break; + } + + if (dst_addr_set == 0) + return clib_error_return (0, + "LISP-GPE Tunnel destination address not specified"); + if (ipv4_set && ipv6_set) + return clib_error_return (0, "both IPv4 and IPv6 addresses specified"); + if (!disable) + { + nsh_md2_ioam_enable_disable_for_dest (gm->vlib_main, + dst_addr, outer_fib_index, + ipv4_set, 1); + } + else + { + nsh_md2_ioam_disable_for_dest + (vm, dst_addr, outer_fib_index, ipv4_set); + } + return rv; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (nsh_md2_ioam_set_transit_rewrite_cmd, static) = { + .path = "set nsh-md2-ioam-transit", + .short_help = "set nsh-ioam-lisp-gpe-transit dst-ip <dst_ip> [outer-fib-index <outer_fib_index>] [disable]", + .function = nsh_md2_ioam_set_transit_rewrite_command_fn, +}; + +/** + * Function definition to backwalk a FIB node + */ +static fib_node_back_walk_rc_t +nsh_md2_ioam_back_walk (fib_node_t * node, fib_node_back_walk_ctx_t * ctx) +{ + nsh_md2_ioam_refresh_output_feature_on_all_dest (); + return (FIB_NODE_BACK_WALK_CONTINUE); +} + +/** + * Function definition to get a FIB node from its index + */ +static fib_node_t * +nsh_md2_ioam_fib_node_get (fib_node_index_t index) +{ + nsh_md2_ioam_main_t *hm = &nsh_md2_ioam_main; + return (&hm->node); +} + +/** + * Function definition to inform the FIB node that its last lock has gone. + */ +static void +nsh_md2_ioam_last_lock_gone (fib_node_t * node) +{ + ASSERT (0); +} + + +/* + * Virtual function table registered by MPLS GRE tunnels + * for participation in the FIB object graph. + */ +const static fib_node_vft_t nsh_md2_ioam_vft = { + .fnv_get = nsh_md2_ioam_fib_node_get, + .fnv_last_lock = nsh_md2_ioam_last_lock_gone, + .fnv_back_walk = nsh_md2_ioam_back_walk, +}; + +void +nsh_md2_ioam_interface_init (void) +{ + nsh_md2_ioam_main_t *hm = &nsh_md2_ioam_main; + hm->fib_entry_type = fib_node_register_new_type (&nsh_md2_ioam_vft); + return; +} + diff --git a/src/plugins/nsh/nsh-md2-ioam/nsh_md2_ioam.h b/src/plugins/nsh/nsh-md2-ioam/nsh_md2_ioam.h new file mode 100644 index 00000000000..3d48fde6ecd --- /dev/null +++ b/src/plugins/nsh/nsh-md2-ioam/nsh_md2_ioam.h @@ -0,0 +1,119 @@ +/* + * Copyright (c) 2017 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. + */ +#ifndef __included_nsh_md2_ioam_h__ +#define __included_nsh_md2_ioam_h__ + +#include <nsh/nsh.h> +#include <nsh/nsh_packet.h> +#include <vnet/ip/ip.h> +#include <vnet/ip/ip4_packet.h> +#include <vnet/ip/ip6_packet.h> + + +typedef struct nsh_md2_ioam_sw_interface_ +{ + u32 sw_if_index; +} nsh_md2_ioam_sw_interface_t; + +typedef struct nsh_md2_ioam_dest_tunnels_ +{ + ip46_address_t dst_addr; + u32 fp_proto; + u32 sibling_index; + fib_node_index_t fib_entry_index; + u32 outer_fib_index; +} nsh_md2_ioam_dest_tunnels_t; + +typedef struct nsh_md2_ioam_main_ +{ + /** + * Linkage into the FIB object graph + */ + fib_node_t node; + + /* time scale transform. Joy. */ + u32 unix_time_0; + f64 vlib_time_0; + + + /* Trace option */ + u8 has_trace_option; + + /* Pot option */ + u8 has_pot_option; + +#define PPC_NONE 0 +#define PPC_ENCAP 1 +#define PPC_DECAP 2 + u8 has_ppc_option; + +#define TSP_SECONDS 0 +#define TSP_MILLISECONDS 1 +#define TSP_MICROSECONDS 2 +#define TSP_NANOSECONDS 3 + + + /* API message ID base */ + u16 msg_id_base; + + /* Override to export for iOAM */ + uword decap_v4_next_override; + uword decap_v6_next_override; + + /* sequence of node graph for encap */ + uword encap_v4_next_node; + uword encap_v6_next_node; + + /* Software interfaces. */ + nsh_md2_ioam_sw_interface_t *sw_interfaces; + + /* hash ip4/ip6 -> list of destinations for doing transit iOAM operation */ + nsh_md2_ioam_dest_tunnels_t *dst_tunnels; + uword *dst_by_ip4; + uword *dst_by_ip6; + + /** per sw_if_index, to maintain bitmap */ + u8 *bool_ref_by_sw_if_index; + fib_node_type_t fib_entry_type; + + +} nsh_md2_ioam_main_t; +extern nsh_md2_ioam_main_t nsh_md2_ioam_main; + +/* + * Primary h-b-h handler trace support + */ +typedef struct +{ + u32 next_index; + u32 trace_len; + u8 option_data[256]; +} ioam_trace_t; + + +clib_error_t *nsh_md2_ioam_enable_disable (int has_trace_option, + int has_pot_option, + int has_ppc_option); + + + +int nsh_md2_ioam_trace_profile_setup (void); + +int nsh_md2_ioam_trace_profile_cleanup (void); +extern void nsh_md2_ioam_interface_init (void); + + + +#endif diff --git a/src/plugins/nsh/nsh-md2-ioam/nsh_md2_ioam_api.c b/src/plugins/nsh/nsh-md2-ioam/nsh_md2_ioam_api.c new file mode 100644 index 00000000000..9ed835bd98f --- /dev/null +++ b/src/plugins/nsh/nsh-md2-ioam/nsh_md2_ioam_api.c @@ -0,0 +1,77 @@ +/* + * 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. + */ +/* + *----------------------------------------------------------------------- + * nsh_md2_ioam_api.c - iOAM for NSH/LISP-GPE related APIs to create + * and maintain profiles + *----------------------------------------------------------------------- + */ + +#include <vnet/vnet.h> +#include <vlib/unix/plugin.h> +#include <vnet/plugin/plugin.h> +#include <nsh/nsh-md2-ioam/nsh_md2_ioam.h> + +#include <vlibapi/api.h> +#include <vlibmemory/api.h> + +/* define message structures */ +#define vl_typedefs +#include <nsh/nsh.api.h> +#undef vl_typedefs + +/* define generated endian-swappers */ +#define vl_endianfun +#include <nsh/nsh.api.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 <nsh/nsh.api.h> +#undef vl_printfun + +u8 *nsh_trace_main = NULL; +static clib_error_t * +nsh_md2_ioam_init (vlib_main_t * vm) +{ + nsh_md2_ioam_main_t *sm = &nsh_md2_ioam_main; + clib_error_t *error = 0; + + nsh_trace_main = + (u8 *) vlib_get_plugin_symbol ("ioam_plugin.so", "trace_main"); + + if (!nsh_trace_main) + return error; + + vec_new (nsh_md2_ioam_sw_interface_t, pool_elts (sm->sw_interfaces)); + sm->dst_by_ip4 = hash_create_mem (0, sizeof (fib_prefix_t), sizeof (uword)); + + sm->dst_by_ip6 = hash_create_mem (0, sizeof (fib_prefix_t), sizeof (uword)); + + nsh_md2_ioam_interface_init (); + + return error; +} + +VLIB_INIT_FUNCTION (nsh_md2_ioam_init); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/nsh/nsh-md2-ioam/nsh_md2_ioam_trace.c b/src/plugins/nsh/nsh-md2-ioam/nsh_md2_ioam_trace.c new file mode 100644 index 00000000000..1baa2365b15 --- /dev/null +++ b/src/plugins/nsh/nsh-md2-ioam/nsh_md2_ioam_trace.c @@ -0,0 +1,464 @@ +/* + * Copyright (c) 2017 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 <vlib/vlib.h> +#include <vnet/vnet.h> +#include <vnet/pg/pg.h> +#include <vppinfra/error.h> + +#include <vppinfra/hash.h> +#include <vppinfra/error.h> +#include <vppinfra/elog.h> + +#include <ioam/lib-trace/trace_util.h> +#include <nsh/nsh-md2-ioam/nsh_md2_ioam.h> +#include <nsh/nsh_packet.h> + +/* Timestamp precision multipliers for seconds, milliseconds, microseconds + * and nanoseconds respectively. + */ +static f64 trace_tsp_mul[4] = { 1, 1e3, 1e6, 1e9 }; + +#define NSH_MD2_IOAM_TRACE_SIZE_DUMMY 20 + +typedef union +{ + u64 as_u64; + u32 as_u32[2]; +} time_u64_t; + + +/* *INDENT-OFF* */ +typedef CLIB_PACKED(struct { + u16 class; + u8 type; + u8 length; + u8 data_list_elts_left; + u16 ioam_trace_type; + u8 reserve; + u32 elts[0]; /* Variable type. So keep it generic */ +}) nsh_md2_ioam_trace_option_t; +/* *INDENT-ON* */ + + +#define foreach_nsh_md2_ioam_trace_stats \ + _(SUCCESS, "Pkts updated with TRACE records") \ + _(FAILED, "Errors in TRACE due to lack of TRACE records") + +static char *nsh_md2_ioam_trace_stats_strings[] = { +#define _(sym,string) string, + foreach_nsh_md2_ioam_trace_stats +#undef _ +}; + +typedef enum +{ +#define _(sym,str) NSH_MD2_IOAM_TRACE_##sym, + foreach_nsh_md2_ioam_trace_stats +#undef _ + NSH_MD2_IOAM_TRACE_N_STATS, +} nsh_md2_ioam_trace_stats_t; + + +typedef struct +{ + /* stats */ + u64 counters[ARRAY_LEN (nsh_md2_ioam_trace_stats_strings)]; + + /* convenience */ + vlib_main_t *vlib_main; + vnet_main_t *vnet_main; +} nsh_md2_ioam_trace_main_t; + +nsh_md2_ioam_trace_main_t nsh_md2_ioam_trace_main; + +/* + * Find a trace profile + */ + +extern u8 *nsh_trace_main; +always_inline trace_profile * +nsh_trace_profile_find (void) +{ + trace_main_t *sm = (trace_main_t *) nsh_trace_main; + + return (&(sm->profile)); +} + + +always_inline void +nsh_md2_ioam_trace_stats_increment_counter (u32 counter_index, u64 increment) +{ + nsh_md2_ioam_trace_main_t *hm = &nsh_md2_ioam_trace_main; + + hm->counters[counter_index] += increment; +} + + +static u8 * +format_ioam_data_list_element (u8 * s, va_list * args) +{ + u32 *elt = va_arg (*args, u32 *); + u8 *trace_type_p = va_arg (*args, u8 *); + u8 trace_type = *trace_type_p; + + + if (trace_type & BIT_TTL_NODEID) + { + u32 ttl_node_id_host_byte_order = clib_net_to_host_u32 (*elt); + s = format (s, "ttl 0x%x node id 0x%x ", + ttl_node_id_host_byte_order >> 24, + ttl_node_id_host_byte_order & 0x00FFFFFF); + + elt++; + } + + if (trace_type & BIT_ING_INTERFACE && trace_type & BIT_ING_INTERFACE) + { + u32 ingress_host_byte_order = clib_net_to_host_u32 (*elt); + s = format (s, "ingress 0x%x egress 0x%x ", + ingress_host_byte_order >> 16, + ingress_host_byte_order & 0xFFFF); + elt++; + } + + if (trace_type & BIT_TIMESTAMP) + { + u32 ts_in_host_byte_order = clib_net_to_host_u32 (*elt); + s = format (s, "ts 0x%x \n", ts_in_host_byte_order); + elt++; + } + + if (trace_type & BIT_APPDATA) + { + u32 appdata_in_host_byte_order = clib_net_to_host_u32 (*elt); + s = format (s, "app 0x%x ", appdata_in_host_byte_order); + elt++; + } + + return s; +} + + + +int +nsh_md2_ioam_trace_rewrite_handler (u8 * rewrite_string, u8 * rewrite_size) +{ + nsh_md2_ioam_trace_option_t *trace_option = NULL; + u8 trace_data_size = 0; + u8 trace_option_elts = 0; + trace_profile *profile = NULL; + + profile = nsh_trace_profile_find (); + + if (PREDICT_FALSE (!profile)) + { + return (-1); + } + + if (PREDICT_FALSE (!rewrite_string)) + return -1; + + trace_option_elts = profile->num_elts; + trace_data_size = fetch_trace_data_size (profile->trace_type); + + trace_option = (nsh_md2_ioam_trace_option_t *) rewrite_string; + trace_option->class = clib_host_to_net_u16 (0x9); + trace_option->type = NSH_MD2_IOAM_OPTION_TYPE_TRACE; + trace_option->length = (trace_option_elts * trace_data_size) + 4; + trace_option->data_list_elts_left = trace_option_elts; + trace_option->ioam_trace_type = + clib_host_to_net_u16 (profile->trace_type & TRACE_TYPE_MASK); + + *rewrite_size = + sizeof (nsh_md2_ioam_trace_option_t) + + (trace_option_elts * trace_data_size); + + return 0; +} + + +int +nsh_md2_ioam_trace_data_list_handler (vlib_buffer_t * b, + nsh_tlv_header_t * opt) +{ + u8 elt_index = 0; + nsh_md2_ioam_trace_option_t *trace = + (nsh_md2_ioam_trace_option_t *) ((u8 *) opt); + time_u64_t time_u64; + u32 *elt; + int rv = 0; + trace_profile *profile = NULL; + nsh_md2_ioam_main_t *hm = &nsh_md2_ioam_main; + nsh_main_t *gm = &nsh_main; + u16 ioam_trace_type = 0; + + profile = nsh_trace_profile_find (); + + if (PREDICT_FALSE (!profile)) + { + return (-1); + } + + + ioam_trace_type = profile->trace_type & TRACE_TYPE_MASK; + time_u64.as_u64 = 0; + + if (PREDICT_TRUE (trace->data_list_elts_left)) + { + trace->data_list_elts_left--; + /* fetch_trace_data_size returns in bytes. Convert it to 4-bytes + * to skip to this node's location. + */ + elt_index = + trace->data_list_elts_left * + fetch_trace_data_size (ioam_trace_type) / 4; + elt = &trace->elts[elt_index]; + if (ioam_trace_type & BIT_TTL_NODEID) + { + ip4_header_t *ip0 = vlib_buffer_get_current (b); + *elt = clib_host_to_net_u32 (((ip0->ttl - 1) << 24) | + profile->node_id); + elt++; + } + + if (ioam_trace_type & BIT_ING_INTERFACE) + { + u16 tx_if = vnet_buffer (b)->sw_if_index[VLIB_TX]; + + *elt = + (vnet_buffer (b)->sw_if_index[VLIB_RX] & 0xFFFF) << 16 | tx_if; + *elt = clib_host_to_net_u32 (*elt); + elt++; + } + + + if (ioam_trace_type & BIT_TIMESTAMP) + { + /* Send least significant 32 bits */ + f64 time_f64 = + (f64) (((f64) hm->unix_time_0) + + (vlib_time_now (gm->vlib_main) - hm->vlib_time_0)); + + time_u64.as_u64 = time_f64 * trace_tsp_mul[profile->trace_tsp]; + *elt = clib_host_to_net_u32 (time_u64.as_u32[0]); + elt++; + } + + if (ioam_trace_type & BIT_APPDATA) + { + /* $$$ set elt0->app_data */ + *elt = clib_host_to_net_u32 (profile->app_data); + elt++; + } + nsh_md2_ioam_trace_stats_increment_counter + (NSH_MD2_IOAM_TRACE_SUCCESS, 1); + } + else + { + nsh_md2_ioam_trace_stats_increment_counter + (NSH_MD2_IOAM_TRACE_FAILED, 1); + } + return (rv); +} + + + +u8 * +nsh_md2_ioam_trace_data_list_trace_handler (u8 * s, nsh_tlv_header_t * opt) +{ + nsh_md2_ioam_trace_option_t *trace; + u8 trace_data_size_in_words = 0; + u32 *elt; + int elt_index = 0; + u16 ioam_trace_type = 0; + + trace = (nsh_md2_ioam_trace_option_t *) ((u8 *) opt); + ioam_trace_type = clib_net_to_host_u16 (trace->ioam_trace_type); + trace_data_size_in_words = fetch_trace_data_size (ioam_trace_type) / 4; + elt = &trace->elts[0]; + s = + format (s, " Trace Type 0x%x , %d elts left\n", ioam_trace_type, + trace->data_list_elts_left); + while ((u8 *) elt < ((u8 *) (&trace->elts[0]) + trace->length - 4 + /* -2 accounts for ioam_trace_type,elts_left */ )) + { + s = format (s, " [%d] %U\n", elt_index, + format_ioam_data_list_element, elt, &ioam_trace_type); + elt_index++; + elt += trace_data_size_in_words; + } + return (s); +} + +int +nsh_md2_ioam_trace_swap_handler (vlib_buffer_t * b, + nsh_tlv_header_t * old_opt, + nsh_tlv_header_t * new_opt) +{ + + clib_memcpy (new_opt, old_opt, new_opt->length + sizeof (nsh_tlv_header_t)); + return nsh_md2_ioam_trace_data_list_handler (b, new_opt); +} + +static clib_error_t * +nsh_md2_ioam_show_ioam_trace_cmd_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + nsh_md2_ioam_trace_main_t *hm = &nsh_md2_ioam_trace_main; + u8 *s = 0; + int i = 0; + + for (i = 0; i < NSH_MD2_IOAM_TRACE_N_STATS; i++) + { + s = format (s, " %s - %lu\n", nsh_md2_ioam_trace_stats_strings[i], + hm->counters[i]); + } + + vlib_cli_output (vm, "%v", s); + vec_free (s); + return 0; +} + + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (nsh_md2_ioam_show_ioam_trace_cmd, static) = { + .path = "show ioam nsh-lisp-gpe trace", + .short_help = "iOAM trace statistics", + .function = nsh_md2_ioam_show_ioam_trace_cmd_fn, +}; +/* *INDENT-ON* */ + + +int +nsh_md2_ioam_trace_pop_handler (vlib_buffer_t * b, nsh_tlv_header_t * opt) +{ + return nsh_md2_ioam_trace_data_list_handler (b, opt); +} + +static clib_error_t * +nsh_md2_ioam_trace_init (vlib_main_t * vm) +{ + nsh_md2_ioam_trace_main_t *hm = &nsh_md2_ioam_trace_main; + nsh_md2_ioam_main_t *gm = &nsh_md2_ioam_main; + clib_error_t *error; + + if ((error = vlib_call_init_function (vm, nsh_init))) + return (error); + + if ((error = vlib_call_init_function (vm, nsh_md2_ioam_init))) + return (error); + + hm->vlib_main = vm; + hm->vnet_main = vnet_get_main (); + gm->unix_time_0 = (u32) time (0); /* Store starting time */ + gm->vlib_time_0 = vlib_time_now (vm); + + memset (hm->counters, 0, sizeof (hm->counters)); + + if (nsh_md2_register_option + (clib_host_to_net_u16 (0x9), + NSH_MD2_IOAM_OPTION_TYPE_TRACE, + NSH_MD2_IOAM_TRACE_SIZE_DUMMY, + nsh_md2_ioam_trace_rewrite_handler, + nsh_md2_ioam_trace_data_list_handler, + nsh_md2_ioam_trace_swap_handler, + nsh_md2_ioam_trace_pop_handler, + nsh_md2_ioam_trace_data_list_trace_handler) < 0) + return (clib_error_create + ("registration of NSH_MD2_IOAM_OPTION_TYPE_TRACE failed")); + + return (0); +} + +VLIB_INIT_FUNCTION (nsh_md2_ioam_trace_init); + +int +nsh_md2_ioam_trace_profile_cleanup (void) +{ + nsh_main_t *hm = &nsh_main; + + hm->options_size[NSH_MD2_IOAM_OPTION_TYPE_TRACE] = 0; + + return 0; + +} + +static int +nsh_md2_ioam_trace_get_sizeof_handler (u32 * result) +{ + u16 size = 0; + u8 trace_data_size = 0; + trace_profile *profile = NULL; + + *result = 0; + + profile = nsh_trace_profile_find (); + + if (PREDICT_FALSE (!profile)) + { + return (-1); + } + + trace_data_size = fetch_trace_data_size (profile->trace_type); + if (PREDICT_FALSE (trace_data_size == 0)) + return VNET_API_ERROR_INVALID_VALUE; + + if (PREDICT_FALSE (profile->num_elts * trace_data_size > 254)) + return VNET_API_ERROR_INVALID_VALUE; + + size += + sizeof (nsh_md2_ioam_trace_option_t) + + profile->num_elts * trace_data_size; + *result = size; + + return 0; +} + + +int +nsh_md2_ioam_trace_profile_setup (void) +{ + u32 trace_size = 0; + nsh_main_t *hm = &nsh_main; + + trace_profile *profile = NULL; + + + profile = nsh_trace_profile_find (); + + if (PREDICT_FALSE (!profile)) + { + return (-1); + } + + + if (nsh_md2_ioam_trace_get_sizeof_handler (&trace_size) < 0) + return (-1); + + hm->options_size[NSH_MD2_IOAM_OPTION_TYPE_TRACE] = trace_size; + + return (0); +} + + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/nsh/nsh-md2-ioam/nsh_md2_ioam_util.h b/src/plugins/nsh/nsh-md2-ioam/nsh_md2_ioam_util.h new file mode 100644 index 00000000000..8fbb3b7aaf7 --- /dev/null +++ b/src/plugins/nsh/nsh-md2-ioam/nsh_md2_ioam_util.h @@ -0,0 +1,122 @@ +/* + * Copyright (c) 2017 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. + */ +#ifndef __included_nsh_md2_ioam_util_h__ +#define __included_nsh_md2_ioam_util_h__ + +#include <vnet/lisp-gpe/lisp_gpe.h> +#include <vnet/lisp-gpe/lisp_gpe_packet.h> +#include <vnet/ip/ip.h> +#include <nsh/nsh.h> +#include <nsh/nsh-md2-ioam/nsh_md2_ioam.h> +#include <nsh/nsh_packet.h> + + +extern nsh_option_map_t *nsh_md2_lookup_option (u16 class, u8 type); + + +typedef struct +{ + u8 trace_data[256]; +} nsh_transit_trace_t; + +always_inline void +nsh_md2_ioam_encap_decap_ioam_v4_one_inline (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_buffer_t * b0, + u32 * next0, u32 drop_node_val, + u8 use_adj) +{ + ip4_header_t *ip0; + udp_header_t *udp_hdr0; + lisp_gpe_header_t *lisp_gpe_hdr0; + nsh_base_header_t *nsh_hdr; + nsh_tlv_header_t *opt0; + nsh_tlv_header_t *limit0; + nsh_main_t *hm = &nsh_main; + nsh_option_map_t *nsh_option; + + /* Populate the iOAM header */ + ip0 = vlib_buffer_get_current (b0); + udp_hdr0 = (udp_header_t *) (ip0 + 1); + lisp_gpe_hdr0 = (lisp_gpe_header_t *) (udp_hdr0 + 1); + nsh_hdr = (nsh_base_header_t *) (lisp_gpe_hdr0 + 1); + opt0 = (nsh_tlv_header_t *) (nsh_hdr + 1); + limit0 = + (nsh_tlv_header_t *) ((u8 *) opt0 + (nsh_hdr->length * 4) - + sizeof (nsh_base_header_t)); + + /* + * Basic validity checks + */ + if ((nsh_hdr->length * 4) > clib_net_to_host_u16 (ip0->length)) + { + *next0 = drop_node_val; + return; + } + + if (nsh_hdr->md_type != 2) + { + *next0 = drop_node_val; + return; + } + + /* Scan the set of h-b-h options, process ones that we understand */ + while (opt0 < limit0) + { + u8 type0; + type0 = opt0->type; + switch (type0) + { + case 0: /* Pad1 */ + opt0 = (nsh_tlv_header_t *) ((u8 *) opt0) + 1; + continue; + case 1: /* PadN */ + break; + default: + nsh_option = nsh_md2_lookup_option (opt0->class, opt0->type); + if ((nsh_option != NULL) && (hm->options[nsh_option->option_id])) + { + if ((*hm->options[nsh_option->option_id]) (b0, opt0) < 0) + { + *next0 = drop_node_val; + return; + } + } + break; + } + opt0 = + (nsh_tlv_header_t *) (((u8 *) opt0) + opt0->length + + sizeof (nsh_tlv_header_t)); + } + + + if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + nsh_transit_trace_t *tr = vlib_add_trace (vm, node, b0, sizeof (*tr)); + clib_memcpy (&(tr->trace_data), nsh_hdr, (nsh_hdr->length * 4)); + } + return; +} + + +#endif + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/nsh/nsh.api b/src/plugins/nsh/nsh.api new file mode 100644 index 00000000000..6beed00d4e1 --- /dev/null +++ b/src/plugins/nsh/nsh.api @@ -0,0 +1,123 @@ + + +/** \brief /** \brief Set or delete an NSH header entry keyed by NSP/NSI + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param is_add - add address if non-zero, else delete + @param nsp_nsi - Key for nsh_header_t entry to map to. : 24bit NSP 8bit NSI + @param md_type - metadata type [1|2] - only MDType1 supported today + @param ver_o_c - version, O-bit and C-bit (see nsh_packet.h) + @param ttl - indicates the maximum SFF hops for an SFP + @param length - header length in n x 32bits, should be 6 for MDtype1 + @param next_protocol - next protocol encapsulated behind NSH header: 1=Ethernet, 2=IP4, 3=IP6 + @param c1 - 32bit Metadata type1 field (context1) + @param c2 - 32bit Metadata type1 field (context2) + @param c3 - 32bit Metadata type1 field (context3) + @param c4 - 32bit Metadata type1 field (context4) + @param tlvs - Metadata Type 2 only, Type Length Value metadata. +*/ +define nsh_add_del_entry { + u32 client_index; + u32 context; + u8 is_add; + u32 nsp_nsi; + u8 md_type; + u8 ver_o_c; + u8 ttl; + u8 length; + u8 next_protocol; + u32 c1; + u32 c2; + u32 c3; + u32 c4; + u8 tlv_length; + u8 tlv[248]; +}; + +/** \brief Reply from adding NSH entry (nsh_add_del_entry) + @param context - sender context, to match reply w/ request + @param retval - 0 means all ok +*/ +define nsh_add_del_entry_reply { + u32 context; + i32 retval; + u32 entry_index; +}; + + +define nsh_entry_dump { + u32 client_index; + u32 context; + u32 entry_index; +}; + +define nsh_entry_details { + u32 context; + u32 entry_index; + u32 nsp_nsi; + u8 md_type; + u8 ver_o_c; + u8 ttl; + u8 length; + u8 next_protocol; + u32 c1; + u32 c2; + u32 c3; + u32 c4; + u8 tlv_length; + u8 tlv[248]; +}; + +/** \brief Set or delete a mapping from one NSH header to another and its egress (decap to inner packet, encap NSH with outer header) + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param is_add - add address if non-zero, else delete + @param nsh_nsi - Key for nsh_header_t entry to map to. : 24bit NSP 8bit NSI + @param mapped_nsp_nsi - Key for nsh_header_t entry to map to. : 24bit NSP 8bit NSI this may be ~0 + if next action is to decap to NSH next protocol + Note the following heuristic: + - if nsp_nsi == mapped_nsp_nsi then use-case is like SFC SFF + - if nsp_nsi != mapped_nsp_nsi then use-case is like SFC SF + Note: these are heuristics. Rules about NSI decrement are out of scope + @param sw_if_index - index number of outer encap for NSH egress + @param next_node - explicitly which node to send to + Note the above parameters are instantiated by "encap-gre-intf <x>" means sw_if_index x, next_node gre-input +*/ +define nsh_add_del_map { + u32 client_index; + u32 context; + u8 is_add; + u32 nsp_nsi; + u32 mapped_nsp_nsi; + u32 nsh_action; + u32 sw_if_index; + u32 rx_sw_if_index; + u32 next_node; +}; + +/** \brief Reply from adding NSH map (nsh_add_del_map) + @param context - sender context, to match reply w/ request + @param retval - 0 means all ok +*/ +define nsh_add_del_map_reply { + u32 context; + i32 retval; + u32 map_index; +}; + +define nsh_map_dump { + u32 client_index; + u32 context; + u32 map_index; +}; + +define nsh_map_details { + u32 context; + u32 map_index; + u32 nsp_nsi; + u32 mapped_nsp_nsi; + u32 nsh_action; + u32 sw_if_index; + u32 rx_sw_if_index; + u32 next_node; +}; diff --git a/src/plugins/nsh/nsh.c b/src/plugins/nsh/nsh.c new file mode 100644 index 00000000000..20e4603b449 --- /dev/null +++ b/src/plugins/nsh/nsh.c @@ -0,0 +1,2545 @@ +/* + * nsh.c - nsh mapping + * + * Copyright (c) 2013 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 <vnet/plugin/plugin.h> +#include <nsh/nsh.h> +#include <vnet/gre/gre.h> +#include <vnet/vxlan/vxlan.h> +#include <vnet/vxlan-gpe/vxlan_gpe.h> +#include <vnet/l2/l2_classify.h> +#include <vnet/adj/adj.h> + +#include <vlibapi/api.h> +#include <vlibmemory/api.h> +#include <vpp/app/version.h> + +/* define message IDs */ +#define vl_msg_id(n,h) n, +typedef enum +{ +#include <nsh/nsh.api.h> + /* We'll want to know how many messages IDs we need... */ + VL_MSG_FIRST_AVAILABLE, +} vl_msg_id_t; +#undef vl_msg_id + +/* define message structures */ +#define vl_typedefs +#include <nsh/nsh.api.h> +#undef vl_typedefs + +/* define generated endian-swappers */ +#define vl_endianfun +#include <nsh/nsh.api.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 <nsh/nsh.api.h> +#undef vl_printfun + +/* Get the API version number */ +#define vl_api_version(n,v) static u32 api_version=(v); +#include <nsh/nsh.api.h> +#undef vl_api_version + +#define vl_msg_name_crc_list +#include <nsh/nsh.api.h> +#undef vl_msg_name_crc_list + +/* + * A handy macro to set up a message reply. + * Assumes that the following variables are available: + * mp - pointer to request message + * rmp - pointer to reply message type + * rv - return value + */ + +#define REPLY_MACRO(t) \ + do { \ + unix_shared_memory_queue_t * q = \ + vl_api_client_index_to_input_queue (mp->client_index); \ + if (!q) \ + return; \ + \ + rmp = vl_msg_api_alloc (sizeof (*rmp)); \ + rmp->_vl_msg_id = ntohs((t)+nm->msg_id_base); \ + rmp->context = mp->context; \ + rmp->retval = ntohl(rv); \ + \ + vl_msg_api_send_shmem (q, (u8 *)&rmp); \ + } while(0); + +#define REPLY_MACRO2(t, body) \ + do { \ + unix_shared_memory_queue_t * q; \ + rv = vl_msg_api_pd_handler (mp, rv); \ + q = vl_api_client_index_to_input_queue (mp->client_index); \ + if (!q) \ + return; \ + \ + rmp = vl_msg_api_alloc (sizeof (*rmp)); \ + rmp->_vl_msg_id = ntohs((t)+nm->msg_id_base); \ + rmp->context = mp->context; \ + rmp->retval = ntohl(rv); \ + do {body;} while (0); \ + vl_msg_api_send_shmem (q, (u8 *)&rmp); \ + } while(0); + +#define FINISH \ + vec_add1 (s, 0); \ + vl_print (handle, (char *)s); \ + vec_free (s); \ + return handle; + +/* List of message types that this plugin understands */ + +#define foreach_nsh_plugin_api_msg \ + _(NSH_ADD_DEL_ENTRY, nsh_add_del_entry) \ + _(NSH_ENTRY_DUMP, nsh_entry_dump) \ + _(NSH_ADD_DEL_MAP, nsh_add_del_map) \ + _(NSH_MAP_DUMP, nsh_map_dump) + + /* Uses network order's class and type to register */ +int +nsh_md2_register_option (u16 class, + u8 type, + u8 option_size, + int add_options (u8 * opt, + u8 * opt_size), + int options (vlib_buffer_t * b, + nsh_tlv_header_t * opt), + int swap_options (vlib_buffer_t * b, + nsh_tlv_header_t * old_opt, + nsh_tlv_header_t * new_opt), + int pop_options (vlib_buffer_t * b, + nsh_tlv_header_t * opt), + u8 * trace (u8 * s, nsh_tlv_header_t * opt)) +{ + nsh_main_t *nm = &nsh_main; + nsh_option_map_by_key_t key, *key_copy; + uword *p; + nsh_option_map_t *nsh_option; + + key.class = class; + key.type = type; + key.pad = 0; + + p = hash_get_mem (nm->nsh_option_map_by_key, &key); + /* Already registered */ + if (p != 0) + { + return (-1); + } + + pool_get_aligned (nm->nsh_option_mappings, nsh_option, + CLIB_CACHE_LINE_BYTES); + memset (nsh_option, 0, sizeof (*nsh_option)); + nsh_option->option_id = nsh_option - nm->nsh_option_mappings; + + key_copy = clib_mem_alloc (sizeof (*key_copy)); + clib_memcpy (key_copy, &key, sizeof (*key_copy)); + hash_set_mem (nm->nsh_option_map_by_key, key_copy, + nsh_option - nm->nsh_option_mappings); + + if (option_size > (MAX_NSH_OPTION_LEN + sizeof (nsh_tlv_header_t))) + { + return (-1); + } + nm->options_size[nsh_option->option_id] = option_size; + nm->add_options[nsh_option->option_id] = add_options; + nm->options[nsh_option->option_id] = options; + nm->swap_options[nsh_option->option_id] = swap_options; + nm->pop_options[nsh_option->option_id] = pop_options; + nm->trace[nsh_option->option_id] = trace; + + return (0); +} + +/* Uses network order's class and type to lookup */ +nsh_option_map_t * +nsh_md2_lookup_option (u16 class, u8 type) +{ + nsh_main_t *nm = &nsh_main; + nsh_option_map_by_key_t key; + uword *p; + + key.class = class; + key.type = type; + key.pad = 0; + + p = hash_get_mem (nm->nsh_option_map_by_key, &key); + /* not registered */ + if (p == 0) + { + return NULL; + } + + return pool_elt_at_index (nm->nsh_option_mappings, p[0]); + +} + +/* Uses network order's class and type to unregister */ +int +nsh_md2_unregister_option (u16 class, + u8 type, + int options (vlib_buffer_t * b, + nsh_tlv_header_t * opt), + u8 * trace (u8 * s, nsh_tlv_header_t * opt)) +{ + nsh_main_t *nm = &nsh_main; + nsh_option_map_by_key_t key, *key_copy; + uword *p; + hash_pair_t *hp; + nsh_option_map_t *nsh_option; + + key.class = class; + key.type = type; + key.pad = 0; + + p = hash_get_mem (nm->nsh_option_map_by_key, &key); + /* not registered */ + if (p == 0) + { + return (-1); + } + + nsh_option = pool_elt_at_index (nm->nsh_option_mappings, p[0]); + nm->options[nsh_option->option_id] = NULL; + nm->add_options[nsh_option->option_id] = NULL; + nm->pop_options[nsh_option->option_id] = NULL; + nm->trace[nsh_option->option_id] = NULL; + + hp = hash_get_pair (nm->nsh_option_map_by_key, &key); + key_copy = (void *) (hp->key); + hash_unset_mem (nm->nsh_option_map_by_key, &key_copy); + clib_mem_free (key_copy); + + pool_put (nm->nsh_option_mappings, nsh_option); + + return (0); +} + +/* format from network order */ +u8 * +format_nsh_header (u8 * s, va_list * args) +{ + nsh_main_t *nm = &nsh_main; + nsh_md2_data_t *opt0; + nsh_md2_data_t *limit0; + nsh_option_map_t *nsh_option; + u8 option_len = 0; + + u8 *header = va_arg (*args, u8 *); + nsh_base_header_t *nsh_base = (nsh_base_header_t *) header; + nsh_md1_data_t *nsh_md1 = (nsh_md1_data_t *) (nsh_base + 1); + nsh_md2_data_t *nsh_md2 = (nsh_md2_data_t *) (nsh_base + 1); + opt0 = (nsh_md2_data_t *) nsh_md2; + limit0 = (nsh_md2_data_t *) ((u8 *) nsh_md2 + + ((nsh_base->length & NSH_LEN_MASK) * 4 + - sizeof (nsh_base_header_t))); + + s = format (s, "nsh ver %d ", (nsh_base->ver_o_c >> 6)); + if (nsh_base->ver_o_c & NSH_O_BIT) + s = format (s, "O-set "); + + if (nsh_base->ver_o_c & NSH_C_BIT) + s = format (s, "C-set "); + + s = format (s, "ttl %d ", (nsh_base->ver_o_c & NSH_TTL_H4_MASK) << 2 | + (nsh_base->length & NSH_TTL_L2_MASK) >> 6); + + s = format (s, "len %d (%d bytes) md_type %d next_protocol %d\n", + (nsh_base->length & NSH_LEN_MASK), + (nsh_base->length & NSH_LEN_MASK) * 4, + nsh_base->md_type, nsh_base->next_protocol); + + s = format (s, " service path %d service index %d\n", + (clib_net_to_host_u32 (nsh_base->nsp_nsi) >> NSH_NSP_SHIFT) & + NSH_NSP_MASK, + clib_net_to_host_u32 (nsh_base->nsp_nsi) & NSH_NSI_MASK); + + if (nsh_base->md_type == 1) + { + s = format (s, " c1 %d c2 %d c3 %d c4 %d\n", + clib_net_to_host_u32 (nsh_md1->c1), + clib_net_to_host_u32 (nsh_md1->c2), + clib_net_to_host_u32 (nsh_md1->c3), + clib_net_to_host_u32 (nsh_md1->c4)); + } + else if (nsh_base->md_type == 2) + { + s = format (s, " Supported TLVs: \n"); + + /* Scan the set of variable metadata, network order */ + while (opt0 < limit0) + { + nsh_option = nsh_md2_lookup_option (opt0->class, opt0->type); + if (nsh_option != NULL) + { + if (nm->trace[nsh_option->option_id] != NULL) + { + s = (*nm->trace[nsh_option->option_id]) (s, opt0); + } + else + { + s = + format (s, "\n untraced option %d length %d", + opt0->type, opt0->length); + } + } + else + { + s = + format (s, "\n unrecognized option %d length %d", + opt0->type, opt0->length); + } + + /* round to 4-byte */ + option_len = ((opt0->length + 3) >> 2) << 2; + opt0 = + (nsh_md2_data_t *) (((u8 *) opt0) + sizeof (nsh_md2_data_t) + + option_len); + } + } + + return s; +} + +static u8 * +format_nsh_action (u8 * s, va_list * args) +{ + u32 nsh_action = va_arg (*args, u32); + + switch (nsh_action) + { + case NSH_ACTION_SWAP: + return format (s, "swap"); + case NSH_ACTION_PUSH: + return format (s, "push"); + case NSH_ACTION_POP: + return format (s, "pop"); + default: + return format (s, "unknown %d", nsh_action); + } + return s; +} + +u8 * +format_nsh_map (u8 * s, va_list * args) +{ + nsh_map_t *map = va_arg (*args, nsh_map_t *); + + s = format (s, "nsh entry nsp: %d nsi: %d ", + (map->nsp_nsi >> NSH_NSP_SHIFT) & NSH_NSP_MASK, + map->nsp_nsi & NSH_NSI_MASK); + s = format (s, "maps to nsp: %d nsi: %d ", + (map->mapped_nsp_nsi >> NSH_NSP_SHIFT) & NSH_NSP_MASK, + map->mapped_nsp_nsi & NSH_NSI_MASK); + + s = format (s, " nsh_action %U\n", format_nsh_action, map->nsh_action); + + switch (map->next_node) + { + case NSH_NODE_NEXT_ENCAP_GRE4: + { + s = format (s, "encapped by GRE4 intf: %d", map->sw_if_index); + break; + } + case NSH_NODE_NEXT_ENCAP_GRE6: + { + s = format (s, "encapped by GRE6 intf: %d", map->sw_if_index); + break; + } + case NSH_NODE_NEXT_ENCAP_VXLANGPE: + { + s = format (s, "encapped by VXLAN GPE intf: %d", map->sw_if_index); + break; + } + case NSH_NODE_NEXT_ENCAP_VXLAN4: + { + s = format (s, "encapped by VXLAN4 intf: %d", map->sw_if_index); + break; + } + case NSH_NODE_NEXT_ENCAP_VXLAN6: + { + s = format (s, "encapped by VXLAN6 intf: %d", map->sw_if_index); + break; + } + case NSH_NODE_NEXT_DECAP_ETH_INPUT: + { + s = format (s, "encap-none"); + break; + } + case NSH_NODE_NEXT_ENCAP_LISP_GPE: + { + s = format (s, "encapped by LISP GPE intf: %d", map->sw_if_index); + break; + } + case NSH_NODE_NEXT_ENCAP_ETHERNET: + { + s = format (s, "encapped by Ethernet intf: %d", map->sw_if_index); + break; + } + default: + s = format (s, "only GRE and VXLANGPE support in this rev"); + } + + return s; +} + +u8 * +format_nsh_node_map_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 *); + nsh_input_trace_t *t = va_arg (*args, nsh_input_trace_t *); + + s = format (s, "\n %U", format_nsh_header, &(t->trace_data)); + + return s; +} + +/** + * @brief Naming for NSH tunnel + * + * @param *s formatting string + * @param *args + * + * @return *s formatted string + * + */ +static u8 * +format_nsh_name (u8 * s, va_list * args) +{ + u32 dev_instance = va_arg (*args, u32); + return format (s, "nsh_tunnel%d", dev_instance); +} + +/** + * @brief CLI function for NSH admin up/down + * + * @param *vnm + * @param nsh_hw_if + * @param flag + * + * @return *rc + * + */ +static clib_error_t * +nsh_interface_admin_up_down (vnet_main_t * vnm, u32 nsh_hw_if, u32 flags) +{ + if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) + vnet_hw_interface_set_flags (vnm, nsh_hw_if, + VNET_HW_INTERFACE_FLAG_LINK_UP); + else + vnet_hw_interface_set_flags (vnm, nsh_hw_if, 0); + + return 0; +} + +static uword +dummy_interface_tx (vlib_main_t * vm, + vlib_node_runtime_t * node, vlib_frame_t * frame) +{ + clib_warning ("you shouldn't be here, leaking buffers..."); + return frame->n_vectors; +} + +VNET_DEVICE_CLASS (nsh_device_class, static) = +{ +.name = "NSH",.format_device_name = format_nsh_name,.tx_function = + dummy_interface_tx,.admin_up_down_function = + nsh_interface_admin_up_down,}; + +/** + * @brief Formatting function for tracing VXLAN GPE with length + * + * @param *s + * @param *args + * + * @return *s + * + */ +static u8 * +format_nsh_tunnel_with_length (u8 * s, va_list * args) +{ + u32 dev_instance = va_arg (*args, u32); + s = format (s, "unimplemented dev %u", dev_instance); + return s; +} + +VNET_HW_INTERFACE_CLASS (nsh_hw_class) = +{ +.name = "NSH",.format_header = + format_nsh_tunnel_with_length,.build_rewrite = + default_build_rewrite,.flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P,}; + + +/** + * Action function to add or del an nsh map. + * Shared by both CLI and binary API + **/ + +int +nsh_add_del_map (nsh_add_del_map_args_t * a, u32 * map_indexp) +{ + nsh_main_t *nm = &nsh_main; + vnet_main_t *vnm = nm->vnet_main; + nsh_map_t *map = 0; + u32 key, *key_copy; + uword *entry; + hash_pair_t *hp; + u32 map_index = ~0; + vnet_hw_interface_t *hi; + u32 nsh_hw_if = ~0; + u32 nsh_sw_if = ~0; + + /* net order, so data plane could use nsh header to lookup directly */ + key = clib_host_to_net_u32 (a->map.nsp_nsi); + + entry = hash_get_mem (nm->nsh_mapping_by_key, &key); + + if (a->is_add) + { + /* adding an entry, must not already exist */ + if (entry) + return -1; //TODO API_ERROR_INVALID_VALUE; + + pool_get_aligned (nm->nsh_mappings, map, CLIB_CACHE_LINE_BYTES); + memset (map, 0, sizeof (*map)); + + /* copy from arg structure */ + map->nsp_nsi = a->map.nsp_nsi; + map->mapped_nsp_nsi = a->map.mapped_nsp_nsi; + map->nsh_action = a->map.nsh_action; + map->sw_if_index = a->map.sw_if_index; + map->rx_sw_if_index = a->map.rx_sw_if_index; + map->next_node = a->map.next_node; + map->adj_index = a->map.adj_index; + + + key_copy = clib_mem_alloc (sizeof (*key_copy)); + clib_memcpy (key_copy, &key, sizeof (*key_copy)); + + hash_set_mem (nm->nsh_mapping_by_key, key_copy, map - nm->nsh_mappings); + map_index = map - nm->nsh_mappings; + + if (vec_len (nm->free_nsh_tunnel_hw_if_indices) > 0) + { + nsh_hw_if = nm->free_nsh_tunnel_hw_if_indices + [vec_len (nm->free_nsh_tunnel_hw_if_indices) - 1]; + _vec_len (nm->free_nsh_tunnel_hw_if_indices) -= 1; + + hi = vnet_get_hw_interface (vnm, nsh_hw_if); + hi->dev_instance = map_index; + hi->hw_instance = hi->dev_instance; + } + else + { + nsh_hw_if = vnet_register_interface + (vnm, nsh_device_class.index, map_index, nsh_hw_class.index, + map_index); + hi = vnet_get_hw_interface (vnm, nsh_hw_if); + hi->output_node_index = nsh_aware_vnf_proxy_node.index; + } + + map->nsh_hw_if = nsh_hw_if; + map->nsh_sw_if = nsh_sw_if = hi->sw_if_index; + vec_validate_init_empty (nm->tunnel_index_by_sw_if_index, nsh_sw_if, + ~0); + nm->tunnel_index_by_sw_if_index[nsh_sw_if] = key; + + vnet_sw_interface_set_flags (vnm, hi->sw_if_index, + VNET_SW_INTERFACE_FLAG_ADMIN_UP); + } + else + { + if (!entry) + return -2; //TODO API_ERROR_NO_SUCH_ENTRY; + + map = pool_elt_at_index (nm->nsh_mappings, entry[0]); + + vnet_sw_interface_set_flags (vnm, map->nsh_sw_if, + VNET_SW_INTERFACE_FLAG_ADMIN_DOWN); + vec_add1 (nm->free_nsh_tunnel_hw_if_indices, map->nsh_sw_if); + nm->tunnel_index_by_sw_if_index[map->nsh_sw_if] = ~0; + + hp = hash_get_pair (nm->nsh_mapping_by_key, &key); + key_copy = (void *) (hp->key); + hash_unset_mem (nm->nsh_mapping_by_key, &key); + clib_mem_free (key_copy); + + pool_put (nm->nsh_mappings, map); + } + + if (map_indexp) + *map_indexp = map_index; + + return 0; +} + +/** + * Action function to add or del an nsh-proxy-session. + * Shared by both CLI and binary API + **/ + +int +nsh_add_del_proxy_session (nsh_add_del_map_args_t * a) +{ + nsh_main_t *nm = &nsh_main; + nsh_proxy_session_t *proxy = 0; + nsh_proxy_session_by_key_t key, *key_copy; + uword *entry; + hash_pair_t *hp; + u32 nsp = 0, nsi = 0; + + memset (&key, 0, sizeof (key)); + key.transport_type = a->map.next_node; + key.transport_index = a->map.sw_if_index; + + entry = hash_get_mem (nm->nsh_proxy_session_by_key, &key); + + if (a->is_add) + { + /* adding an entry, must not already exist */ + if (entry) + return -1; //TODO API_ERROR_INVALID_VALUE; + + pool_get_aligned (nm->nsh_proxy_sessions, proxy, CLIB_CACHE_LINE_BYTES); + memset (proxy, 0, sizeof (*proxy)); + + /* Nsi needs to minus 1 within NSH-Proxy */ + nsp = (a->map.nsp_nsi >> NSH_NSP_SHIFT) & NSH_NSP_MASK; + nsi = a->map.nsp_nsi & NSH_NSI_MASK; + if (nsi == 0) + return -1; + + nsi = nsi - 1; + /* net order, so could use it to lookup nsh map table directly */ + proxy->nsp_nsi = clib_host_to_net_u32 ((nsp << NSH_NSP_SHIFT) | nsi); + + key_copy = clib_mem_alloc (sizeof (*key_copy)); + clib_memcpy (key_copy, &key, sizeof (*key_copy)); + + hash_set_mem (nm->nsh_proxy_session_by_key, key_copy, + proxy - nm->nsh_proxy_sessions); + } + else + { + if (!entry) + return -2; //TODO API_ERROR_NO_SUCH_ENTRY; + + proxy = pool_elt_at_index (nm->nsh_proxy_sessions, entry[0]); + hp = hash_get_pair (nm->nsh_proxy_session_by_key, &key); + key_copy = (void *) (hp->key); + hash_unset_mem (nm->nsh_proxy_session_by_key, &key); + clib_mem_free (key_copy); + + pool_put (nm->nsh_proxy_sessions, proxy); + } + + return 0; +} + +/** + * CLI command for NSH map + */ + +static uword +unformat_nsh_action (unformat_input_t * input, va_list * args) +{ + u32 *result = va_arg (*args, u32 *); + u32 tmp; + + if (unformat (input, "swap")) + *result = NSH_ACTION_SWAP; + else if (unformat (input, "push")) + *result = NSH_ACTION_PUSH; + else if (unformat (input, "pop")) + *result = NSH_ACTION_POP; + else if (unformat (input, "%d", &tmp)) + *result = tmp; + else + return 0; + + return 1; +} + +static adj_index_t +nsh_get_adj_by_sw_if_index (u32 sw_if_index) +{ + adj_index_t ai = ~0; + + /* *INDENT-OFF* */ + pool_foreach_index(ai, adj_pool, + ({ + if (sw_if_index == adj_get_sw_if_index(ai)) + { + return ai; + } + })); + /* *INDENT-ON* */ + + return ~0; +} + +static clib_error_t * +nsh_add_del_map_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; + u32 nsp, nsi, mapped_nsp, mapped_nsi, nsh_action; + int nsp_set = 0, nsi_set = 0, mapped_nsp_set = 0, mapped_nsi_set = 0; + int nsh_action_set = 0; + u32 next_node = ~0; + u32 adj_index = ~0; + u32 sw_if_index = ~0; // temporary requirement to get this moved over to NSHSFC + u32 rx_sw_if_index = ~0; // temporary requirement to get this moved over to NSHSFC + nsh_add_del_map_args_t _a, *a = &_a; + u32 map_index; + int rv; + + /* 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, "nsp %d", &nsp)) + nsp_set = 1; + else if (unformat (line_input, "nsi %d", &nsi)) + nsi_set = 1; + else if (unformat (line_input, "mapped-nsp %d", &mapped_nsp)) + mapped_nsp_set = 1; + else if (unformat (line_input, "mapped-nsi %d", &mapped_nsi)) + mapped_nsi_set = 1; + else if (unformat (line_input, "nsh_action %U", unformat_nsh_action, + &nsh_action)) + nsh_action_set = 1; + else if (unformat (line_input, "encap-gre4-intf %d", &sw_if_index)) + next_node = NSH_NODE_NEXT_ENCAP_GRE4; + else if (unformat (line_input, "encap-gre6-intf %d", &sw_if_index)) + next_node = NSH_NODE_NEXT_ENCAP_GRE6; + else if (unformat (line_input, "encap-vxlan-gpe-intf %d", &sw_if_index)) + next_node = NSH_NODE_NEXT_ENCAP_VXLANGPE; + else if (unformat (line_input, "encap-lisp-gpe-intf %d", &sw_if_index)) + next_node = NSH_NODE_NEXT_ENCAP_LISP_GPE; + else if (unformat (line_input, "encap-vxlan4-intf %d", &sw_if_index)) + next_node = NSH_NODE_NEXT_ENCAP_VXLAN4; + else if (unformat (line_input, "encap-vxlan6-intf %d", &sw_if_index)) + next_node = NSH_NODE_NEXT_ENCAP_VXLAN6; + else if (unformat (line_input, "encap-eth-intf %d", &sw_if_index)) + { + next_node = NSH_NODE_NEXT_ENCAP_ETHERNET; + adj_index = nsh_get_adj_by_sw_if_index (sw_if_index); + } + else + if (unformat + (line_input, "encap-none %d %d", &sw_if_index, &rx_sw_if_index)) + next_node = NSH_NODE_NEXT_DECAP_ETH_INPUT; + else + return clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + } + + unformat_free (line_input); + + if (nsp_set == 0 || nsi_set == 0) + return clib_error_return (0, "nsp nsi pair required. Key: for NSH entry"); + + if (mapped_nsp_set == 0 || mapped_nsi_set == 0) + return clib_error_return (0, + "mapped-nsp mapped-nsi pair required. Key: for NSH entry"); + + if (nsh_action_set == 0) + return clib_error_return (0, "nsh_action required: swap|push|pop."); + + if (next_node == ~0) + return clib_error_return (0, + "must specific action: [encap-gre-intf <nn> | encap-vxlan-gpe-intf <nn> | encap-lisp-gpe-intf <nn> | encap-none <tx_sw_if_index> <rx_sw_if_index>]"); + + memset (a, 0, sizeof (*a)); + + /* set args structure */ + a->is_add = is_add; + a->map.nsp_nsi = (nsp << NSH_NSP_SHIFT) | nsi; + a->map.mapped_nsp_nsi = (mapped_nsp << NSH_NSP_SHIFT) | mapped_nsi; + a->map.nsh_action = nsh_action; + a->map.sw_if_index = sw_if_index; + a->map.rx_sw_if_index = rx_sw_if_index; + a->map.next_node = next_node; + a->map.adj_index = adj_index; + + rv = nsh_add_del_map (a, &map_index); + + switch (rv) + { + case 0: + break; + case -1: //TODO API_ERROR_INVALID_VALUE: + return clib_error_return (0, + "mapping already exists. Remove it first."); + + case -2: // TODO API_ERROR_NO_SUCH_ENTRY: + return clib_error_return (0, "mapping does not exist."); + + default: + return clib_error_return (0, "nsh_add_del_map returned %d", rv); + } + + if ((a->map.next_node == NSH_NODE_NEXT_ENCAP_VXLAN4) + | (a->map.next_node == NSH_NODE_NEXT_ENCAP_VXLAN6)) + { + rv = nsh_add_del_proxy_session (a); + + switch (rv) + { + case 0: + break; + case -1: //TODO API_ERROR_INVALID_VALUE: + return clib_error_return (0, + "nsh-proxy-session already exists. Remove it first."); + + case -2: // TODO API_ERROR_NO_SUCH_ENTRY: + return clib_error_return (0, "nsh-proxy-session does not exist."); + + default: + return clib_error_return + (0, "nsh_add_del_proxy_session() returned %d", rv); + } + } + + return 0; +} + +VLIB_CLI_COMMAND (create_nsh_map_command, static) = +{ +.path = "create nsh map",.short_help = + "create nsh map nsp <nn> nsi <nn> [del] mapped-nsp <nn> mapped-nsi <nn> nsh_action [swap|push|pop] " + "[encap-gre4-intf <nn> | encap-gre4-intf <nn> | encap-vxlan-gpe-intf <nn> | encap-lisp-gpe-intf <nn> " + " encap-vxlan4-intf <nn> | encap-vxlan6-intf <nn>| encap-eth-intf <nn> | encap-none]\n",.function + = nsh_add_del_map_command_fn,}; + +/** API message handler */ +static void +vl_api_nsh_add_del_map_t_handler (vl_api_nsh_add_del_map_t * mp) +{ + vl_api_nsh_add_del_map_reply_t *rmp; + nsh_main_t *nm = &nsh_main; + int rv; + nsh_add_del_map_args_t _a, *a = &_a; + u32 map_index = ~0; + + a->is_add = mp->is_add; + a->map.nsp_nsi = ntohl (mp->nsp_nsi); + a->map.mapped_nsp_nsi = ntohl (mp->mapped_nsp_nsi); + a->map.nsh_action = ntohl (mp->nsh_action); + a->map.sw_if_index = ntohl (mp->sw_if_index); + a->map.rx_sw_if_index = ntohl (mp->rx_sw_if_index); + a->map.next_node = ntohl (mp->next_node); + + rv = nsh_add_del_map (a, &map_index); + + if ((a->map.next_node == NSH_NODE_NEXT_ENCAP_VXLAN4) + | (a->map.next_node == NSH_NODE_NEXT_ENCAP_VXLAN6)) + { + rv = nsh_add_del_proxy_session (a); + } + + REPLY_MACRO2 (VL_API_NSH_ADD_DEL_MAP_REPLY, ( + { + rmp->map_index = + htonl (map_index); + } + )); +} + +/** + * CLI command for showing the mapping between NSH entries + */ +static clib_error_t * +show_nsh_map_command_fn (vlib_main_t * vm, + unformat_input_t * input, vlib_cli_command_t * cmd) +{ + nsh_main_t *nm = &nsh_main; + nsh_map_t *map; + + if (pool_elts (nm->nsh_mappings) == 0) + vlib_cli_output (vm, "No nsh maps configured."); + + pool_foreach (map, nm->nsh_mappings, ( + { + vlib_cli_output (vm, "%U", + format_nsh_map, + map); + } + )); + + return 0; +} + +VLIB_CLI_COMMAND (show_nsh_map_command, static) = +{ +.path = "show nsh map",.function = show_nsh_map_command_fn,}; + +int +nsh_header_rewrite (nsh_entry_t * nsh_entry) +{ + u8 *rw = 0; + int len = 0; + nsh_base_header_t *nsh_base; + nsh_md1_data_t *nsh_md1; + nsh_main_t *nm = &nsh_main; + nsh_md2_data_t *opt0; + nsh_md2_data_t *limit0; + nsh_md2_data_t *nsh_md2; + nsh_option_map_t _nsh_option, *nsh_option = &_nsh_option; + u8 old_option_size = 0; + u8 new_option_size = 0; + + vec_free (nsh_entry->rewrite); + if (nsh_entry->nsh_base.md_type == 1) + { + len = sizeof (nsh_base_header_t) + sizeof (nsh_md1_data_t); + } + else if (nsh_entry->nsh_base.md_type == 2) + { + /* set to maxim, maybe dataplane will add more TLVs */ + len = MAX_NSH_HEADER_LEN; + } + vec_validate_aligned (rw, len - 1, CLIB_CACHE_LINE_BYTES); + memset (rw, 0, len); + + nsh_base = (nsh_base_header_t *) rw; + nsh_base->ver_o_c = nsh_entry->nsh_base.ver_o_c; + nsh_base->length = nsh_entry->nsh_base.length; + nsh_base->md_type = nsh_entry->nsh_base.md_type; + nsh_base->next_protocol = nsh_entry->nsh_base.next_protocol; + nsh_base->nsp_nsi = clib_host_to_net_u32 (nsh_entry->nsh_base.nsp_nsi); + + if (nsh_base->md_type == 1) + { + nsh_md1 = (nsh_md1_data_t *) (rw + sizeof (nsh_base_header_t)); + nsh_md1->c1 = clib_host_to_net_u32 (nsh_entry->md.md1_data.c1); + nsh_md1->c2 = clib_host_to_net_u32 (nsh_entry->md.md1_data.c2); + nsh_md1->c3 = clib_host_to_net_u32 (nsh_entry->md.md1_data.c3); + nsh_md1->c4 = clib_host_to_net_u32 (nsh_entry->md.md1_data.c4); + nsh_entry->rewrite_size = 24; + } + else if (nsh_base->md_type == 2) + { + opt0 = (nsh_md2_data_t *) (nsh_entry->tlvs_data); + limit0 = (nsh_md2_data_t *) ((u8 *) opt0 + nsh_entry->tlvs_len); + + nsh_md2 = (nsh_md2_data_t *) (rw + sizeof (nsh_base_header_t)); + nsh_entry->rewrite_size = sizeof (nsh_base_header_t); + + while (opt0 < limit0) + { + old_option_size = sizeof (nsh_md2_data_t) + opt0->length; + /* round to 4-byte */ + old_option_size = ((old_option_size + 3) >> 2) << 2; + + nsh_option = nsh_md2_lookup_option (opt0->class, opt0->type); + if (nsh_option == NULL) + { + goto next_tlv_md2; + } + + if (nm->add_options[nsh_option->option_id] != NULL) + { + if (0 != nm->add_options[nsh_option->option_id] ((u8 *) nsh_md2, + &new_option_size)) + { + goto next_tlv_md2; + } + + /* round to 4-byte */ + new_option_size = ((new_option_size + 3) >> 2) << 2; + + nsh_entry->rewrite_size += new_option_size; + nsh_md2 = + (nsh_md2_data_t *) (((u8 *) nsh_md2) + new_option_size); + opt0 = (nsh_md2_data_t *) (((u8 *) opt0) + old_option_size); + } + else + { + next_tlv_md2: + opt0 = (nsh_md2_data_t *) (((u8 *) opt0) + old_option_size); + } + + } + } + + nsh_entry->rewrite = rw; + nsh_base->length = (nsh_base->length & NSH_TTL_L2_MASK) | + ((nsh_entry->rewrite_size >> 2) & NSH_LEN_MASK); + + return 0; +} + + +/** + * Action function for adding an NSH entry + * nsh_add_del_entry_args_t *a: host order + */ + +int +nsh_add_del_entry (nsh_add_del_entry_args_t * a, u32 * entry_indexp) +{ + nsh_main_t *nm = &nsh_main; + nsh_entry_t *nsh_entry = 0; + u32 key, *key_copy; + uword *entry_id; + hash_pair_t *hp; + u32 entry_index = ~0; + u8 tlvs_len = 0; + u8 *data = 0; + + /* host order, because nsh map table stores nsp_nsi in host order */ + key = a->nsh_entry.nsh_base.nsp_nsi; + + entry_id = hash_get_mem (nm->nsh_entry_by_key, &key); + + if (a->is_add) + { + /* adding an entry, must not already exist */ + if (entry_id) + return -1; // TODO VNET_API_ERROR_INVALID_VALUE; + + pool_get_aligned (nm->nsh_entries, nsh_entry, CLIB_CACHE_LINE_BYTES); + memset (nsh_entry, 0, sizeof (*nsh_entry)); + + /* copy from arg structure */ +#define _(x) nsh_entry->nsh_base.x = a->nsh_entry.nsh_base.x; + foreach_copy_nsh_base_hdr_field; +#undef _ + + if (a->nsh_entry.nsh_base.md_type == 1) + { + nsh_entry->md.md1_data.c1 = a->nsh_entry.md.md1_data.c1; + nsh_entry->md.md1_data.c2 = a->nsh_entry.md.md1_data.c2; + nsh_entry->md.md1_data.c3 = a->nsh_entry.md.md1_data.c3; + nsh_entry->md.md1_data.c4 = a->nsh_entry.md.md1_data.c4; + } + else if (a->nsh_entry.nsh_base.md_type == 2) + { + vec_free (nsh_entry->tlvs_data); + tlvs_len = a->nsh_entry.tlvs_len; + vec_validate_aligned (data, tlvs_len - 1, CLIB_CACHE_LINE_BYTES); + + clib_memcpy (data, a->nsh_entry.tlvs_data, tlvs_len); + nsh_entry->tlvs_data = data; + nsh_entry->tlvs_len = tlvs_len; + vec_free (a->nsh_entry.tlvs_data); + } + + nsh_header_rewrite (nsh_entry); + + key_copy = clib_mem_alloc (sizeof (*key_copy)); + clib_memcpy (key_copy, &key, sizeof (*key_copy)); + + hash_set_mem (nm->nsh_entry_by_key, key_copy, + nsh_entry - nm->nsh_entries); + entry_index = nsh_entry - nm->nsh_entries; + } + else + { + if (!entry_id) + return -2; //TODO API_ERROR_NO_SUCH_ENTRY; + + nsh_entry = pool_elt_at_index (nm->nsh_entries, entry_id[0]); + hp = hash_get_pair (nm->nsh_entry_by_key, &key); + key_copy = (void *) (hp->key); + hash_unset_mem (nm->nsh_entry_by_key, &key); + clib_mem_free (key_copy); + + vec_free (nsh_entry->tlvs_data); + vec_free (nsh_entry->rewrite); + pool_put (nm->nsh_entries, nsh_entry); + } + + if (entry_indexp) + *entry_indexp = entry_index; + + return 0; +} + + +/** + * CLI command for adding NSH entry + */ + +static clib_error_t * +nsh_add_del_entry_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 ver_o_c = 0; + u8 ttl = 63; + u8 length = 0; + u8 md_type = 0; + u8 next_protocol = 1; /* default: ip4 */ + u32 nsp; + u8 nsp_set = 0; + u32 nsi; + u8 nsi_set = 0; + u32 nsp_nsi; + u32 c1 = 0; + u32 c2 = 0; + u32 c3 = 0; + u32 c4 = 0; + u8 *data = 0; + nsh_tlv_header_t tlv_header; + u8 cur_len = 0, tlvs_len = 0; + u8 *current; + nsh_main_t *nm = &nsh_main; + nsh_option_map_t _nsh_option, *nsh_option = &_nsh_option; + u8 option_size = 0; + u32 tmp; + int rv; + u32 entry_index; + nsh_add_del_entry_args_t _a, *a = &_a; + u8 has_ioam_trace_option = 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, "del")) + is_add = 0; + else if (unformat (line_input, "version %d", &tmp)) + ver_o_c |= (tmp & 3) << 6; + else if (unformat (line_input, "o-bit %d", &tmp)) + ver_o_c |= (tmp & 1) << 5; + else if (unformat (line_input, "c-bit %d", &tmp)) + ver_o_c |= (tmp & 1) << 4; + else if (unformat (line_input, "ttl %d", &ttl)) + ver_o_c |= (ttl & NSH_LEN_MASK) >> 2; + else if (unformat (line_input, "md-type %d", &tmp)) + md_type = tmp; + else if (unformat (line_input, "next-ip4")) + next_protocol = 1; + else if (unformat (line_input, "next-ip6")) + next_protocol = 2; + else if (unformat (line_input, "next-ethernet")) + next_protocol = 3; + else if (unformat (line_input, "c1 %d", &c1)) + ; + else if (unformat (line_input, "c2 %d", &c2)) + ; + else if (unformat (line_input, "c3 %d", &c3)) + ; + else if (unformat (line_input, "c4 %d", &c4)) + ; + else if (unformat (line_input, "nsp %d", &nsp)) + nsp_set = 1; + else if (unformat (line_input, "nsi %d", &nsi)) + nsi_set = 1; + else if (unformat (line_input, "tlv-ioam-trace")) + has_ioam_trace_option = 1; + else + return clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + } + + unformat_free (line_input); + + if (nsp_set == 0) + return clib_error_return (0, "nsp not specified"); + + if (nsi_set == 0) + return clib_error_return (0, "nsi not specified"); + + if (md_type == 1 && has_ioam_trace_option == 1) + return clib_error_return (0, "Invalid MD Type"); + + nsp_nsi = (nsp << 8) | nsi; + + memset (a, 0, sizeof (*a)); + a->is_add = is_add; + + if (md_type == 1) + { + a->nsh_entry.md.md1_data.c1 = c1; + a->nsh_entry.md.md1_data.c2 = c2; + a->nsh_entry.md.md1_data.c3 = c3; + a->nsh_entry.md.md1_data.c4 = c4; + length = (sizeof (nsh_base_header_t) + sizeof (nsh_md1_data_t)) >> 2; + } + else if (md_type == 2) + { + length = sizeof (nsh_base_header_t) >> 2; + + vec_free (a->nsh_entry.tlvs_data); + tlvs_len = (MAX_METADATA_LEN << 2); + vec_validate_aligned (data, tlvs_len - 1, CLIB_CACHE_LINE_BYTES); + a->nsh_entry.tlvs_data = data; + current = data; + + if (has_ioam_trace_option) + { + tlv_header.class = clib_host_to_net_u16 (NSH_MD2_IOAM_CLASS); + tlv_header.type = NSH_MD2_IOAM_OPTION_TYPE_TRACE; + /* Uses network order's class and type to lookup */ + nsh_option = + nsh_md2_lookup_option (tlv_header.class, tlv_header.type); + if (nsh_option == NULL) + return clib_error_return (0, "iOAM Trace not registered"); + + if (nm->add_options[nsh_option->option_id] != NULL) + { + if (0 != nm->add_options[nsh_option->option_id] ((u8 *) current, + &option_size)) + { + return clib_error_return (0, "Invalid MD Type"); + } + } + + nm->options_size[nsh_option->option_id] = option_size; + /* round to 4-byte */ + option_size = (((option_size + 3) >> 2) << 2); + + cur_len += option_size; + current = data + option_size; + } + + /* Add more options' parsing */ + + a->nsh_entry.tlvs_len = cur_len; + length += (cur_len >> 2); + } + length = (length & NSH_LEN_MASK) | ((ttl & 0x3) << 6); + +#define _(x) a->nsh_entry.nsh_base.x = x; + foreach_copy_nsh_base_hdr_field; +#undef _ + + rv = nsh_add_del_entry (a, &entry_index); + + switch (rv) + { + case 0: + break; + default: + return clib_error_return (0, "nsh_add_del_entry returned %d", rv); + } + + return 0; +} + +VLIB_CLI_COMMAND (create_nsh_entry_command, static) = +{ +.path = "create nsh entry",.short_help = + "create nsh entry {nsp <nn> nsi <nn>} [ttl <nn>] [md-type <nn>]" + " [c1 <nn> c2 <nn> c3 <nn> c4 <nn>] [tlv-ioam-trace] [del]\n",.function + = nsh_add_del_entry_command_fn,}; + +/** API message handler */ +static void vl_api_nsh_add_del_entry_t_handler + (vl_api_nsh_add_del_entry_t * mp) +{ + vl_api_nsh_add_del_entry_reply_t *rmp; + nsh_main_t *nm = &nsh_main; + int rv; + nsh_add_del_entry_args_t _a, *a = &_a; + u32 entry_index = ~0; + u8 tlvs_len = 0; + u8 *data = 0; + + a->is_add = mp->is_add; + a->nsh_entry.nsh_base.ver_o_c = + (mp->ver_o_c & 0xF0) | ((mp->ttl & NSH_LEN_MASK) >> 2); + a->nsh_entry.nsh_base.length = + (mp->length & NSH_LEN_MASK) | ((mp->ttl & 0x3) << 6); + a->nsh_entry.nsh_base.md_type = mp->md_type; + a->nsh_entry.nsh_base.next_protocol = mp->next_protocol; + a->nsh_entry.nsh_base.nsp_nsi = ntohl (mp->nsp_nsi); + if (mp->md_type == 1) + { + a->nsh_entry.md.md1_data.c1 = ntohl (mp->c1); + a->nsh_entry.md.md1_data.c2 = ntohl (mp->c2); + a->nsh_entry.md.md1_data.c3 = ntohl (mp->c3); + a->nsh_entry.md.md1_data.c4 = ntohl (mp->c4); + } + else if (mp->md_type == 2) + { + tlvs_len = mp->tlv_length; + vec_validate_aligned (data, tlvs_len - 1, CLIB_CACHE_LINE_BYTES); + + clib_memcpy (data, mp->tlv, tlvs_len); + a->nsh_entry.tlvs_data = data; + a->nsh_entry.tlvs_len = tlvs_len; + } + + rv = nsh_add_del_entry (a, &entry_index); + + REPLY_MACRO2 (VL_API_NSH_ADD_DEL_ENTRY_REPLY, ( + { + rmp->entry_index = + htonl (entry_index); + } + )); +} + +static void send_nsh_entry_details + (nsh_entry_t * t, unix_shared_memory_queue_t * q, u32 context) +{ + vl_api_nsh_entry_details_t *rmp; + nsh_main_t *nm = &nsh_main; + + rmp = vl_msg_api_alloc (sizeof (*rmp)); + memset (rmp, 0, sizeof (*rmp)); + + rmp->_vl_msg_id = ntohs ((VL_API_NSH_ENTRY_DETAILS) + nm->msg_id_base); + rmp->ver_o_c = t->nsh_base.ver_o_c; + rmp->ttl = (t->nsh_base.ver_o_c & NSH_TTL_H4_MASK) << 2 | + (t->nsh_base.length & NSH_TTL_L2_MASK) >> 6; + rmp->length = t->nsh_base.length & NSH_LEN_MASK; + rmp->md_type = t->nsh_base.md_type; + rmp->next_protocol = t->nsh_base.next_protocol; + rmp->nsp_nsi = htonl (t->nsh_base.nsp_nsi); + + if (t->nsh_base.md_type == 1) + { + rmp->tlv_length = 4; + rmp->c1 = htonl (t->md.md1_data.c1); + rmp->c2 = htonl (t->md.md1_data.c2); + rmp->c3 = htonl (t->md.md1_data.c3); + rmp->c4 = htonl (t->md.md1_data.c4); + } + else if (t->nsh_base.md_type == 2) + { + rmp->tlv_length = t->tlvs_len; + clib_memcpy (rmp->tlv, t->tlvs_data, t->tlvs_len); + } + + rmp->context = context; + + vl_msg_api_send_shmem (q, (u8 *) & rmp); +} + +static void +vl_api_nsh_entry_dump_t_handler (vl_api_nsh_entry_dump_t * mp) +{ + unix_shared_memory_queue_t *q; + nsh_main_t *nm = &nsh_main; + nsh_entry_t *t; + u32 entry_index; + + q = vl_api_client_index_to_input_queue (mp->client_index); + if (q == 0) + { + return; + } + + entry_index = ntohl (mp->entry_index); + + if (~0 == entry_index) + { + pool_foreach (t, nm->nsh_entries, ( + { + send_nsh_entry_details (t, q, + mp->context); + } + )); + } + else + { + if (entry_index >= vec_len (nm->nsh_entries)) + { + return; + } + t = &nm->nsh_entries[entry_index]; + send_nsh_entry_details (t, q, mp->context); + } +} + +static void send_nsh_map_details + (nsh_map_t * t, unix_shared_memory_queue_t * q, u32 context) +{ + vl_api_nsh_map_details_t *rmp; + nsh_main_t *nm = &nsh_main; + + rmp = vl_msg_api_alloc (sizeof (*rmp)); + memset (rmp, 0, sizeof (*rmp)); + + rmp->_vl_msg_id = ntohs ((VL_API_NSH_MAP_DETAILS) + nm->msg_id_base); + rmp->nsp_nsi = htonl (t->nsp_nsi); + rmp->mapped_nsp_nsi = htonl (t->mapped_nsp_nsi); + rmp->nsh_action = htonl (t->nsh_action); + rmp->sw_if_index = htonl (t->sw_if_index); + rmp->rx_sw_if_index = htonl (t->rx_sw_if_index); + rmp->next_node = htonl (t->next_node); + + rmp->context = context; + + vl_msg_api_send_shmem (q, (u8 *) & rmp); +} + +static void +vl_api_nsh_map_dump_t_handler (vl_api_nsh_map_dump_t * mp) +{ + unix_shared_memory_queue_t *q; + nsh_main_t *nm = &nsh_main; + nsh_map_t *t; + u32 map_index; + + q = vl_api_client_index_to_input_queue (mp->client_index); + if (q == 0) + { + return; + } + + map_index = ntohl (mp->map_index); + + if (~0 == map_index) + { + pool_foreach (t, nm->nsh_mappings, ( + { + send_nsh_map_details (t, q, + mp->context); + } + )); + } + else + { + if (map_index >= vec_len (nm->nsh_mappings)) + { + return; + } + t = &nm->nsh_mappings[map_index]; + send_nsh_map_details (t, q, mp->context); + } +} + +static clib_error_t * +show_nsh_entry_command_fn (vlib_main_t * vm, + unformat_input_t * input, vlib_cli_command_t * cmd) +{ + nsh_main_t *nm = &nsh_main; + nsh_entry_t *nsh_entry; + + if (pool_elts (nm->nsh_entries) == 0) + vlib_cli_output (vm, "No nsh entries configured."); + + pool_foreach (nsh_entry, nm->nsh_entries, ( + { + vlib_cli_output (vm, "%U", + format_nsh_header, + nsh_entry->rewrite); + vlib_cli_output (vm, + " rewrite_size: %d bytes", + nsh_entry->rewrite_size); + } + )); + + return 0; +} + +VLIB_CLI_COMMAND (show_nsh_entry_command, static) = +{ +.path = "show nsh entry",.function = show_nsh_entry_command_fn,}; + + +/* Set up the API message handling tables */ +static clib_error_t * +nsh_plugin_api_hookup (vlib_main_t * vm) +{ + nsh_main_t *nm __attribute__ ((unused)) = &nsh_main; +#define _(N,n) \ + vl_msg_api_set_handlers((VL_API_##N + nm->msg_id_base), \ + #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_nsh_plugin_api_msg; +#undef _ + + return 0; +} + +static void +setup_message_id_table (nsh_main_t * nm, api_main_t * am) +{ +#define _(id,n,crc) \ + vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + nm->msg_id_base); + foreach_vl_msg_name_crc_nsh; +#undef _ +} + +always_inline void +nsh_md2_encap (vlib_buffer_t * b, nsh_base_header_t * hdr, + nsh_entry_t * nsh_entry) +{ + nsh_main_t *nm = &nsh_main; + nsh_base_header_t *nsh_base; + nsh_tlv_header_t *opt0; + nsh_tlv_header_t *limit0; + nsh_tlv_header_t *nsh_md2; + nsh_option_map_t *nsh_option; + u8 old_option_size = 0; + u8 new_option_size = 0; + + /* Populate the NSH Header */ + opt0 = (nsh_tlv_header_t *) (nsh_entry->tlvs_data); + limit0 = (nsh_tlv_header_t *) (nsh_entry->tlvs_data + nsh_entry->tlvs_len); + + nsh_md2 = (nsh_tlv_header_t *) ((u8 *) hdr /*nsh_entry->rewrite */ + + sizeof (nsh_base_header_t)); + nsh_entry->rewrite_size = sizeof (nsh_base_header_t); + + /* Scan the set of variable metadata, process ones that we understand */ + while (opt0 < limit0) + { + old_option_size = sizeof (nsh_tlv_header_t) + opt0->length; + /* round to 4-byte */ + old_option_size = ((old_option_size + 3) >> 2) << 2; + + nsh_option = nsh_md2_lookup_option (opt0->class, opt0->type); + if (nsh_option == NULL) + { + goto next_tlv_md2; + } + + if (nm->options[nsh_option->option_id]) + { + if ((*nm->options[nsh_option->option_id]) (b, nsh_md2)) + { + goto next_tlv_md2; + } + + /* option length may be varied */ + new_option_size = sizeof (nsh_tlv_header_t) + nsh_md2->length; + /* round to 4-byte */ + new_option_size = ((new_option_size + 3) >> 2) << 2; + nsh_entry->rewrite_size += new_option_size; + + nsh_md2 = (nsh_tlv_header_t *) (((u8 *) nsh_md2) + new_option_size); + opt0 = (nsh_tlv_header_t *) (((u8 *) opt0) + old_option_size); + + } + else + { + next_tlv_md2: + opt0 = (nsh_tlv_header_t *) (((u8 *) opt0) + old_option_size); + } + } + + /* update nsh header's length */ + nsh_base = (nsh_base_header_t *) nsh_entry->rewrite; + nsh_base->length = (nsh_base->length & NSH_TTL_L2_MASK) | + ((nsh_entry->rewrite_size >> 2) & NSH_LEN_MASK); + return; +} + +always_inline void +nsh_md2_swap (vlib_buffer_t * b, + nsh_base_header_t * hdr, + u32 header_len, + nsh_entry_t * nsh_entry, u32 * next, u32 drop_node_val) +{ + nsh_main_t *nm = &nsh_main; + nsh_base_header_t *nsh_base; + nsh_tlv_header_t *opt0; + nsh_tlv_header_t *limit0; + nsh_tlv_header_t *nsh_md2; + nsh_option_map_t *nsh_option; + u8 old_option_size = 0; + u8 new_option_size = 0; + + /* Populate the NSH Header */ + opt0 = (nsh_md2_data_t *) (hdr + 1); + limit0 = (nsh_md2_data_t *) ((u8 *) hdr + header_len); + + nsh_md2 = + (nsh_tlv_header_t *) (nsh_entry->rewrite + sizeof (nsh_base_header_t)); + nsh_entry->rewrite_size = sizeof (nsh_base_header_t); + + /* Scan the set of variable metadata, process ones that we understand */ + while (opt0 < limit0) + { + old_option_size = sizeof (nsh_tlv_header_t) + opt0->length; + /* round to 4-byte */ + old_option_size = ((old_option_size + 3) >> 2) << 2; + + nsh_option = nsh_md2_lookup_option (opt0->class, opt0->type); + if (nsh_option == NULL) + { + goto next_tlv_md2; + } + + if (nm->swap_options[nsh_option->option_id]) + { + if ((*nm->swap_options[nsh_option->option_id]) (b, opt0, nsh_md2)) + { + goto next_tlv_md2; + } + + /* option length may be varied */ + new_option_size = sizeof (nsh_tlv_header_t) + nsh_md2->length; + /* round to 4-byte */ + new_option_size = ((new_option_size + 3) >> 2) << 2; + nsh_entry->rewrite_size += new_option_size; + nsh_md2 = (nsh_tlv_header_t *) (((u8 *) nsh_md2) + new_option_size); + + opt0 = (nsh_tlv_header_t *) (((u8 *) opt0) + old_option_size); + + } + else + { + next_tlv_md2: + opt0 = (nsh_tlv_header_t *) (((u8 *) opt0) + old_option_size); + } + } + + /* update nsh header's length */ + nsh_base = (nsh_base_header_t *) nsh_entry->rewrite; + nsh_base->length = (nsh_base->length & NSH_TTL_L2_MASK) | + ((nsh_entry->rewrite_size >> 2) & NSH_LEN_MASK); + return; +} + +always_inline void +nsh_md2_decap (vlib_buffer_t * b, + nsh_base_header_t * hdr, + u32 * header_len, u32 * next, u32 drop_node_val) +{ + nsh_main_t *nm = &nsh_main; + nsh_md2_data_t *opt0; + nsh_md2_data_t *limit0; + nsh_option_map_t *nsh_option; + u8 option_len = 0; + + /* Populate the NSH Header */ + opt0 = (nsh_md2_data_t *) (hdr + 1); + limit0 = (nsh_md2_data_t *) ((u8 *) hdr + *header_len); + + /* Scan the set of variable metadata, process ones that we understand */ + while (opt0 < limit0) + { + nsh_option = nsh_md2_lookup_option (opt0->class, opt0->type); + if (nsh_option == NULL) + { + *next = drop_node_val; + return; + } + + if (nm->pop_options[nsh_option->option_id]) + { + if ((*nm->pop_options[nsh_option->option_id]) (b, opt0)) + { + *next = drop_node_val; + return; + } + } + /* round to 4-byte */ + option_len = ((opt0->length + 3) >> 2) << 2; + opt0 = + (nsh_md2_data_t *) (((u8 *) opt0) + sizeof (nsh_md2_data_t) + + option_len); + *next = + (nm->decap_v4_next_override) ? (nm->decap_v4_next_override) : (*next); + *header_len = (nm->decap_v4_next_override) ? 0 : (*header_len); + } + + return; +} + +static uword +nsh_input_map (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame, u32 node_type) +{ + u32 n_left_from, next_index, *from, *to_next; + nsh_main_t *nm = &nsh_main; + + from = vlib_frame_vector_args (from_frame); + n_left_from = from_frame->n_vectors; + + next_index = node->cached_next_index; + + while (n_left_from > 0) + { + u32 n_left_to_next; + + vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + + while (n_left_from >= 4 && n_left_to_next >= 2) + { + u32 bi0, bi1; + vlib_buffer_t *b0, *b1; + u32 next0 = NSH_NODE_NEXT_DROP, next1 = NSH_NODE_NEXT_DROP; + uword *entry0, *entry1; + nsh_base_header_t *hdr0 = 0, *hdr1 = 0; + u32 header_len0 = 0, header_len1 = 0; + u32 nsp_nsi0, nsp_nsi1; + u32 ttl0, ttl1; + u32 error0, error1; + nsh_map_t *map0 = 0, *map1 = 0; + nsh_entry_t *nsh_entry0 = 0, *nsh_entry1 = 0; + nsh_base_header_t *encap_hdr0 = 0, *encap_hdr1 = 0; + u32 encap_hdr_len0 = 0, encap_hdr_len1 = 0; + nsh_proxy_session_by_key_t key0, key1; + uword *p0, *p1; + nsh_proxy_session_t *proxy0, *proxy1; + u32 sw_if_index0 = 0, sw_if_index1 = 0; + ethernet_header_t dummy_eth0, dummy_eth1; + + /* Prefetch next iteration. */ + { + vlib_buffer_t *p2, *p3; + + p2 = vlib_get_buffer (vm, from[2]); + p3 = vlib_get_buffer (vm, from[3]); + + vlib_prefetch_buffer_header (p2, LOAD); + vlib_prefetch_buffer_header (p3, LOAD); + + CLIB_PREFETCH (p2->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD); + CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD); + } + + bi0 = from[0]; + bi1 = from[1]; + to_next[0] = bi0; + to_next[1] = bi1; + from += 2; + to_next += 2; + n_left_from -= 2; + n_left_to_next -= 2; + + error0 = 0; + error1 = 0; + + b0 = vlib_get_buffer (vm, bi0); + b1 = vlib_get_buffer (vm, bi1); + hdr0 = vlib_buffer_get_current (b0); + if (node_type == NSH_INPUT_TYPE) + { + nsp_nsi0 = hdr0->nsp_nsi; + header_len0 = (hdr0->length & NSH_LEN_MASK) * 4; + ttl0 = (hdr0->ver_o_c & NSH_TTL_H4_MASK) << 2 | + (hdr0->length & NSH_TTL_L2_MASK) >> 6; + ttl0 = ttl0 - 1; + if (PREDICT_FALSE (ttl0 == 0)) + { + error0 = NSH_NODE_ERROR_INVALID_TTL; + goto trace0; + } + } + else if (node_type == NSH_CLASSIFIER_TYPE) + { + nsp_nsi0 = + clib_host_to_net_u32 (vnet_buffer (b0)-> + l2_classify.opaque_index); + } + else if (node_type == NSH_AWARE_VNF_PROXY_TYPE) + { + /* Push dummy Eth header */ + memset (&dummy_eth0.dst_address[0], 0x11223344, 4); + memset (&dummy_eth0.dst_address[4], 0x5566, 2); + memset (&dummy_eth0.src_address[0], 0x778899aa, 4); + memset (&dummy_eth0.src_address[4], 0xbbcc, 2); + dummy_eth0.type = 0x0800; + vlib_buffer_advance (b0, -(word) sizeof (ethernet_header_t)); + hdr0 = vlib_buffer_get_current (b0); + clib_memcpy (hdr0, &dummy_eth0, + (word) sizeof (ethernet_header_t)); + + sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX]; + nsp_nsi0 = nm->tunnel_index_by_sw_if_index[sw_if_index0]; + } + else + { + memset (&key0, 0, sizeof (key0)); + key0.transport_type = NSH_NODE_NEXT_ENCAP_VXLAN4; + key0.transport_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; + + p0 = hash_get_mem (nm->nsh_proxy_session_by_key, &key0); + if (PREDICT_FALSE (p0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_PROXY; + goto trace0; + } + + proxy0 = pool_elt_at_index (nm->nsh_proxy_sessions, p0[0]); + if (PREDICT_FALSE (proxy0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_PROXY; + goto trace0; + } + nsp_nsi0 = proxy0->nsp_nsi; + } + + hdr1 = vlib_buffer_get_current (b1); + if (node_type == NSH_INPUT_TYPE) + { + nsp_nsi1 = hdr1->nsp_nsi; + header_len1 = (hdr1->length & NSH_LEN_MASK) * 4; + ttl1 = (hdr1->ver_o_c & NSH_TTL_H4_MASK) << 2 | + (hdr1->length & NSH_TTL_L2_MASK) >> 6; + ttl1 = ttl1 - 1; + if (PREDICT_FALSE (ttl1 == 0)) + { + error1 = NSH_NODE_ERROR_INVALID_TTL; + goto trace1; + } + } + else if (node_type == NSH_CLASSIFIER_TYPE) + { + nsp_nsi1 = + clib_host_to_net_u32 (vnet_buffer (b1)-> + l2_classify.opaque_index); + } + else if (node_type == NSH_AWARE_VNF_PROXY_TYPE) + { + /* Push dummy Eth header */ + memset (&dummy_eth1.dst_address[0], 0x11223344, 4); + memset (&dummy_eth1.dst_address[4], 0x5566, 2); + memset (&dummy_eth1.src_address[0], 0x778899aa, 4); + memset (&dummy_eth1.src_address[4], 0xbbcc, 2); + dummy_eth1.type = 0x0800; + vlib_buffer_advance (b1, -(word) sizeof (ethernet_header_t)); + hdr1 = vlib_buffer_get_current (b1); + clib_memcpy (hdr1, &dummy_eth1, + (word) sizeof (ethernet_header_t)); + + sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_TX]; + nsp_nsi1 = nm->tunnel_index_by_sw_if_index[sw_if_index1]; + } + else + { + memset (&key1, 0, sizeof (key1)); + key1.transport_type = NSH_NODE_NEXT_ENCAP_VXLAN4; + key1.transport_index = vnet_buffer (b1)->sw_if_index[VLIB_RX]; + + p1 = hash_get_mem (nm->nsh_proxy_session_by_key, &key1); + if (PREDICT_FALSE (p1 == 0)) + { + error1 = NSH_NODE_ERROR_NO_PROXY; + goto trace1; + } + + proxy1 = pool_elt_at_index (nm->nsh_proxy_sessions, p1[0]); + if (PREDICT_FALSE (proxy1 == 0)) + { + error1 = NSH_NODE_ERROR_NO_PROXY; + goto trace1; + } + nsp_nsi1 = proxy1->nsp_nsi; + } + + /* Process packet 0 */ + entry0 = hash_get_mem (nm->nsh_mapping_by_key, &nsp_nsi0); + if (PREDICT_FALSE (entry0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_MAPPING; + goto trace0; + } + + /* Entry should point to a mapping ... */ + map0 = pool_elt_at_index (nm->nsh_mappings, entry0[0]); + if (PREDICT_FALSE (map0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_MAPPING; + goto trace0; + } + + /* set up things for next node to transmit ie which node to handle it and where */ + next0 = map0->next_node; + vnet_buffer (b0)->sw_if_index[VLIB_TX] = map0->sw_if_index; + vnet_buffer (b0)->ip.adj_index[VLIB_TX] = map0->adj_index; + + if (PREDICT_FALSE (map0->nsh_action == NSH_ACTION_POP)) + { + /* Manipulate MD2 */ + if (PREDICT_FALSE (hdr0->md_type == 2)) + { + nsh_md2_decap (b0, hdr0, &header_len0, &next0, + NSH_NODE_NEXT_DROP); + if (PREDICT_FALSE (next0 == NSH_NODE_NEXT_DROP)) + { + error0 = NSH_NODE_ERROR_INVALID_OPTIONS; + goto trace0; + } + vnet_buffer (b0)->sw_if_index[VLIB_RX] = + map0->rx_sw_if_index; + } + + /* Pop NSH header */ + vlib_buffer_advance (b0, (word) header_len0); + goto trace0; + } + + entry0 = hash_get_mem (nm->nsh_entry_by_key, &map0->mapped_nsp_nsi); + if (PREDICT_FALSE (entry0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_ENTRY; + goto trace0; + } + + nsh_entry0 = + (nsh_entry_t *) pool_elt_at_index (nm->nsh_entries, entry0[0]); + encap_hdr0 = (nsh_base_header_t *) (nsh_entry0->rewrite); + /* rewrite_size should equal to (encap_hdr0->length * 4) */ + encap_hdr_len0 = nsh_entry0->rewrite_size; + + if (PREDICT_TRUE (map0->nsh_action == NSH_ACTION_SWAP)) + { + /* Manipulate MD2 */ + if (PREDICT_FALSE (hdr0->md_type == 2)) + { + nsh_md2_swap (b0, hdr0, header_len0, nsh_entry0, + &next0, NSH_NODE_NEXT_DROP); + if (PREDICT_FALSE (next0 == NSH_NODE_NEXT_DROP)) + { + error0 = NSH_NODE_ERROR_INVALID_OPTIONS; + goto trace0; + } + } + + /* Pop old NSH header */ + vlib_buffer_advance (b0, (word) header_len0); + + /* After processing, md2's length may be varied */ + encap_hdr_len0 = nsh_entry0->rewrite_size; + /* Push new NSH header */ + vlib_buffer_advance (b0, -(word) encap_hdr_len0); + hdr0 = vlib_buffer_get_current (b0); + clib_memcpy (hdr0, encap_hdr0, (word) encap_hdr_len0); + + goto trace0; + } + + if (PREDICT_TRUE (map0->nsh_action == NSH_ACTION_PUSH)) + { + /* After processing, md2's length may be varied */ + encap_hdr_len0 = nsh_entry0->rewrite_size; + /* Push new NSH header */ + vlib_buffer_advance (b0, -(word) encap_hdr_len0); + hdr0 = vlib_buffer_get_current (b0); + clib_memcpy (hdr0, encap_hdr0, (word) encap_hdr_len0); + + /* Manipulate MD2 */ + if (PREDICT_FALSE (nsh_entry0->nsh_base.md_type == 2)) + { + nsh_md2_encap (b0, hdr0, nsh_entry0); + } + + } + + trace0:b0->error = error0 ? node->errors[error0] : 0; + + if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + nsh_input_trace_t *tr = + vlib_add_trace (vm, node, b0, sizeof (*tr)); + clib_memcpy (&(tr->trace_data), hdr0, + ((hdr0->length & NSH_LEN_MASK) * 4)); + } + + /* Process packet 1 */ + entry1 = hash_get_mem (nm->nsh_mapping_by_key, &nsp_nsi1); + if (PREDICT_FALSE (entry1 == 0)) + { + error1 = NSH_NODE_ERROR_NO_MAPPING; + goto trace1; + } + + /* Entry should point to a mapping ... */ + map1 = pool_elt_at_index (nm->nsh_mappings, entry1[0]); + if (PREDICT_FALSE (map1 == 0)) + { + error1 = NSH_NODE_ERROR_NO_MAPPING; + goto trace1; + } + + /* set up things for next node to transmit ie which node to handle it and where */ + next1 = map1->next_node; + vnet_buffer (b1)->sw_if_index[VLIB_TX] = map1->sw_if_index; + vnet_buffer (b1)->ip.adj_index[VLIB_TX] = map1->adj_index; + + if (PREDICT_FALSE (map1->nsh_action == NSH_ACTION_POP)) + { + /* Manipulate MD2 */ + if (PREDICT_FALSE (hdr1->md_type == 2)) + { + nsh_md2_decap (b1, hdr1, &header_len1, &next1, + NSH_NODE_NEXT_DROP); + if (PREDICT_FALSE (next1 == NSH_NODE_NEXT_DROP)) + { + error1 = NSH_NODE_ERROR_INVALID_OPTIONS; + goto trace1; + } + vnet_buffer (b1)->sw_if_index[VLIB_RX] = + map0->rx_sw_if_index; + } + + /* Pop NSH header */ + vlib_buffer_advance (b1, (word) header_len1); + goto trace1; + } + + entry1 = hash_get_mem (nm->nsh_entry_by_key, &map1->mapped_nsp_nsi); + if (PREDICT_FALSE (entry1 == 0)) + { + error1 = NSH_NODE_ERROR_NO_ENTRY; + goto trace1; + } + + nsh_entry1 = + (nsh_entry_t *) pool_elt_at_index (nm->nsh_entries, entry1[0]); + encap_hdr1 = (nsh_base_header_t *) (nsh_entry1->rewrite); + /* rewrite_size should equal to (encap_hdr0->length * 4) */ + encap_hdr_len1 = nsh_entry1->rewrite_size; + + if (PREDICT_TRUE (map1->nsh_action == NSH_ACTION_SWAP)) + { + /* Manipulate MD2 */ + if (PREDICT_FALSE (hdr1->md_type == 2)) + { + nsh_md2_swap (b1, hdr1, header_len1, nsh_entry1, + &next1, NSH_NODE_NEXT_DROP); + if (PREDICT_FALSE (next1 == NSH_NODE_NEXT_DROP)) + { + error1 = NSH_NODE_ERROR_INVALID_OPTIONS; + goto trace1; + } + } + + /* Pop old NSH header */ + vlib_buffer_advance (b1, (word) header_len1); + + /* After processing, md2's length may be varied */ + encap_hdr_len1 = nsh_entry1->rewrite_size; + /* Push new NSH header */ + vlib_buffer_advance (b1, -(word) encap_hdr_len1); + hdr1 = vlib_buffer_get_current (b1); + clib_memcpy (hdr1, encap_hdr1, (word) encap_hdr_len1); + + goto trace1; + } + + if (PREDICT_FALSE (map1->nsh_action == NSH_ACTION_PUSH)) + { + /* After processing, md2's length may be varied */ + encap_hdr_len1 = nsh_entry1->rewrite_size; + /* Push new NSH header */ + vlib_buffer_advance (b1, -(word) encap_hdr_len1); + hdr1 = vlib_buffer_get_current (b1); + clib_memcpy (hdr1, encap_hdr1, (word) encap_hdr_len1); + + /* Manipulate MD2 */ + if (PREDICT_FALSE (nsh_entry1->nsh_base.md_type == 2)) + { + nsh_md2_encap (b1, hdr1, nsh_entry1); + } + + } + + trace1:b1->error = error1 ? node->errors[error1] : 0; + + if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED)) + { + nsh_input_trace_t *tr = + vlib_add_trace (vm, node, b1, sizeof (*tr)); + clib_memcpy (&(tr->trace_data), hdr1, + ((hdr1->length & NSH_LEN_MASK) * 4)); + } + + vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next, + n_left_to_next, bi0, bi1, next0, + next1); + + } + + while (n_left_from > 0 && n_left_to_next > 0) + { + u32 bi0 = 0; + vlib_buffer_t *b0 = NULL; + u32 next0 = NSH_NODE_NEXT_DROP; + uword *entry0; + nsh_base_header_t *hdr0 = 0; + u32 header_len0 = 0; + u32 nsp_nsi0; + u32 ttl0; + u32 error0; + nsh_map_t *map0 = 0; + nsh_entry_t *nsh_entry0 = 0; + nsh_base_header_t *encap_hdr0 = 0; + u32 encap_hdr_len0 = 0; + nsh_proxy_session_by_key_t key0; + uword *p0; + nsh_proxy_session_t *proxy0 = 0; + u32 sw_if_index0 = 0; + ethernet_header_t dummy_eth0; + + bi0 = from[0]; + to_next[0] = bi0; + from += 1; + to_next += 1; + n_left_from -= 1; + n_left_to_next -= 1; + error0 = 0; + + b0 = vlib_get_buffer (vm, bi0); + hdr0 = vlib_buffer_get_current (b0); + + if (node_type == NSH_INPUT_TYPE) + { + nsp_nsi0 = hdr0->nsp_nsi; + header_len0 = (hdr0->length & NSH_LEN_MASK) * 4; + ttl0 = (hdr0->ver_o_c & NSH_TTL_H4_MASK) << 2 | + (hdr0->length & NSH_TTL_L2_MASK) >> 6; + ttl0 = ttl0 - 1; + if (PREDICT_FALSE (ttl0 == 0)) + { + error0 = NSH_NODE_ERROR_INVALID_TTL; + goto trace00; + } + } + else if (node_type == NSH_CLASSIFIER_TYPE) + { + nsp_nsi0 = + clib_host_to_net_u32 (vnet_buffer (b0)-> + l2_classify.opaque_index); + } + else if (node_type == NSH_AWARE_VNF_PROXY_TYPE) + { + /* Push dummy Eth header */ + memset (&dummy_eth0.dst_address[0], 0x11223344, 4); + memset (&dummy_eth0.dst_address[4], 0x5566, 2); + memset (&dummy_eth0.src_address[0], 0x778899aa, 4); + memset (&dummy_eth0.src_address[4], 0xbbcc, 2); + dummy_eth0.type = 0x0800; + vlib_buffer_advance (b0, -(word) sizeof (ethernet_header_t)); + hdr0 = vlib_buffer_get_current (b0); + clib_memcpy (hdr0, &dummy_eth0, + (word) sizeof (ethernet_header_t)); + + sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX]; + nsp_nsi0 = nm->tunnel_index_by_sw_if_index[sw_if_index0]; + } + else + { + memset (&key0, 0, sizeof (key0)); + key0.transport_type = NSH_NODE_NEXT_ENCAP_VXLAN4; + key0.transport_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; + + p0 = hash_get_mem (nm->nsh_proxy_session_by_key, &key0); + if (PREDICT_FALSE (p0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_PROXY; + goto trace00; + } + + proxy0 = pool_elt_at_index (nm->nsh_proxy_sessions, p0[0]); + if (PREDICT_FALSE (proxy0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_PROXY; + goto trace00; + } + nsp_nsi0 = proxy0->nsp_nsi; + } + + entry0 = hash_get_mem (nm->nsh_mapping_by_key, &nsp_nsi0); + + if (PREDICT_FALSE (entry0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_MAPPING; + goto trace00; + } + + /* Entry should point to a mapping ... */ + map0 = pool_elt_at_index (nm->nsh_mappings, entry0[0]); + + if (PREDICT_FALSE (map0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_MAPPING; + goto trace00; + } + + /* set up things for next node to transmit ie which node to handle it and where */ + next0 = map0->next_node; + vnet_buffer (b0)->sw_if_index[VLIB_TX] = map0->sw_if_index; + vnet_buffer (b0)->ip.adj_index[VLIB_TX] = map0->adj_index; + vnet_buffer (b0)->sw_if_index[VLIB_RX] = map0->nsh_sw_if; + + if (PREDICT_FALSE (map0->nsh_action == NSH_ACTION_POP)) + { + /* Manipulate MD2 */ + if (PREDICT_FALSE (hdr0->md_type == 2)) + { + nsh_md2_decap (b0, hdr0, &header_len0, &next0, + NSH_NODE_NEXT_DROP); + if (PREDICT_FALSE (next0 == NSH_NODE_NEXT_DROP)) + { + error0 = NSH_NODE_ERROR_INVALID_OPTIONS; + goto trace00; + } + vnet_buffer (b0)->sw_if_index[VLIB_RX] = + map0->rx_sw_if_index; + } + + /* Pop NSH header */ + vlib_buffer_advance (b0, (word) header_len0); + goto trace00; + } + + entry0 = hash_get_mem (nm->nsh_entry_by_key, &map0->mapped_nsp_nsi); + if (PREDICT_FALSE (entry0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_ENTRY; + goto trace00; + } + + nsh_entry0 = + (nsh_entry_t *) pool_elt_at_index (nm->nsh_entries, entry0[0]); + encap_hdr0 = (nsh_base_header_t *) (nsh_entry0->rewrite); + /* rewrite_size should equal to (encap_hdr0->length * 4) */ + encap_hdr_len0 = nsh_entry0->rewrite_size; + + if (PREDICT_TRUE (map0->nsh_action == NSH_ACTION_SWAP)) + { + /* Manipulate MD2 */ + if (PREDICT_FALSE (hdr0->md_type == 2)) + { + nsh_md2_swap (b0, hdr0, header_len0, nsh_entry0, + &next0, NSH_NODE_NEXT_DROP); + if (PREDICT_FALSE (next0 == NSH_NODE_NEXT_DROP)) + { + error0 = NSH_NODE_ERROR_INVALID_OPTIONS; + goto trace00; + } + } + + /* Pop old NSH header */ + vlib_buffer_advance (b0, (word) header_len0); + + /* After processing, md2's length may be varied */ + encap_hdr_len0 = nsh_entry0->rewrite_size; + /* Push new NSH header */ + vlib_buffer_advance (b0, -(word) encap_hdr_len0); + hdr0 = vlib_buffer_get_current (b0); + clib_memcpy (hdr0, encap_hdr0, (word) encap_hdr_len0); + + goto trace00; + } + + if (PREDICT_TRUE (map0->nsh_action == NSH_ACTION_PUSH)) + { + /* After processing, md2's length may be varied */ + encap_hdr_len0 = nsh_entry0->rewrite_size; + /* Push new NSH header */ + vlib_buffer_advance (b0, -(word) encap_hdr_len0); + hdr0 = vlib_buffer_get_current (b0); + clib_memcpy (hdr0, encap_hdr0, (word) encap_hdr_len0); + /* Manipulate MD2 */ + if (PREDICT_FALSE (nsh_entry0->nsh_base.md_type == 2)) + { + nsh_md2_encap (b0, hdr0, nsh_entry0); + } + + } + + trace00:b0->error = error0 ? node->errors[error0] : 0; + + if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + nsh_input_trace_t *tr = + vlib_add_trace (vm, node, b0, sizeof (*tr)); + clib_memcpy (&(tr->trace_data[0]), hdr0, + ((hdr0->length & NSH_LEN_MASK) * 4)); + } + + vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, + n_left_to_next, bi0, next0); + } + + vlib_put_next_frame (vm, node, next_index, n_left_to_next); + + } + + return from_frame->n_vectors; +} + +/** + * @brief Graph processing dispatch function for NSH Input + * + * @node nsh_input + * @param *vm + * @param *node + * @param *from_frame + * + * @return from_frame->n_vectors + * + */ +static uword +nsh_input (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + return nsh_input_map (vm, node, from_frame, NSH_INPUT_TYPE); +} + +/** + * @brief Graph processing dispatch function for NSH-Proxy + * + * @node nsh_proxy + * @param *vm + * @param *node + * @param *from_frame + * + * @return from_frame->n_vectors + * + */ +static uword +nsh_proxy (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + return nsh_input_map (vm, node, from_frame, NSH_PROXY_TYPE); +} + +/** + * @brief Graph processing dispatch function for NSH Classifier + * + * @node nsh_classifier + * @param *vm + * @param *node + * @param *from_frame + * + * @return from_frame->n_vectors + * + */ +static uword +nsh_classifier (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + return nsh_input_map (vm, node, from_frame, NSH_CLASSIFIER_TYPE); +} + +/** + * @brief Graph processing dispatch function for NSH-AWARE-VNF-PROXY + * + * @node nsh_aware_vnf_proxy + * @param *vm + * @param *node + * @param *from_frame + * + * @return from_frame->n_vectors + * + */ +static uword +nsh_aware_vnf_proxy (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + return nsh_input_map (vm, node, from_frame, NSH_AWARE_VNF_PROXY_TYPE); +} + +static char *nsh_node_error_strings[] = { +#define _(sym,string) string, + foreach_nsh_node_error +#undef _ +}; + +/* register nsh-input node */ +VLIB_REGISTER_NODE (nsh_input_node) = +{ + .function = nsh_input,.name = "nsh-input",.vector_size = + sizeof (u32),.format_trace = format_nsh_node_map_trace,.format_buffer = + format_nsh_header,.type = VLIB_NODE_TYPE_INTERNAL,.n_errors = + ARRAY_LEN (nsh_node_error_strings),.error_strings = + nsh_node_error_strings,.n_next_nodes = NSH_NODE_N_NEXT,.next_nodes = + { +#define _(s,n) [NSH_NODE_NEXT_##s] = n, + foreach_nsh_node_next +#undef _ + } +,}; + +VLIB_NODE_FUNCTION_MULTIARCH (nsh_input_node, nsh_input); + +/* register nsh-proxy node */ +VLIB_REGISTER_NODE (nsh_proxy_node) = +{ + .function = nsh_proxy,.name = "nsh-proxy",.vector_size = + sizeof (u32),.format_trace = format_nsh_node_map_trace,.format_buffer = + format_nsh_header,.type = VLIB_NODE_TYPE_INTERNAL,.n_errors = + ARRAY_LEN (nsh_node_error_strings),.error_strings = + nsh_node_error_strings,.n_next_nodes = NSH_NODE_N_NEXT,.next_nodes = + { +#define _(s,n) [NSH_NODE_NEXT_##s] = n, + foreach_nsh_node_next +#undef _ + } +,}; + +VLIB_NODE_FUNCTION_MULTIARCH (nsh_proxy_node, nsh_proxy); + +/* register nsh-classifier node */ +VLIB_REGISTER_NODE (nsh_classifier_node) = +{ + .function = nsh_classifier,.name = "nsh-classifier",.vector_size = + sizeof (u32),.format_trace = format_nsh_node_map_trace,.format_buffer = + format_nsh_header,.type = VLIB_NODE_TYPE_INTERNAL,.n_errors = + ARRAY_LEN (nsh_node_error_strings),.error_strings = + nsh_node_error_strings,.n_next_nodes = NSH_NODE_N_NEXT,.next_nodes = + { +#define _(s,n) [NSH_NODE_NEXT_##s] = n, + foreach_nsh_node_next +#undef _ + } +,}; + +VLIB_NODE_FUNCTION_MULTIARCH (nsh_classifier_node, nsh_classifier); + +/* register nsh-aware-vnf-proxy node */ +VLIB_REGISTER_NODE (nsh_aware_vnf_proxy_node) = +{ + .function = nsh_aware_vnf_proxy,.name = "nsh-aware-vnf-proxy",.vector_size = + sizeof (u32),.format_trace = format_nsh_node_map_trace,.format_buffer = + format_nsh_header,.type = VLIB_NODE_TYPE_INTERNAL,.n_errors = + ARRAY_LEN (nsh_node_error_strings),.error_strings = + nsh_node_error_strings,.n_next_nodes = NSH_NODE_N_NEXT,.next_nodes = + { +#define _(s,n) [NSH_NODE_NEXT_##s] = n, + foreach_nsh_node_next +#undef _ + } +,}; + +VLIB_NODE_FUNCTION_MULTIARCH (nsh_aware_vnf_proxy_node, nsh_aware_vnf_proxy); + +void +nsh_md2_set_next_ioam_export_override (uword next) +{ + nsh_main_t *hm = &nsh_main; + hm->decap_v4_next_override = next; + return; +} + + +clib_error_t * +nsh_init (vlib_main_t * vm) +{ + nsh_main_t *nm = &nsh_main; + clib_error_t *error = 0; + u8 *name; + uword next_node; + + /* Init the main structures from VPP */ + nm->vlib_main = vm; + nm->vnet_main = vnet_get_main (); + + /* Various state maintenance mappings */ + nm->nsh_mapping_by_key = hash_create_mem (0, sizeof (u32), sizeof (uword)); + + nm->nsh_mapping_by_mapped_key + = hash_create_mem (0, sizeof (u32), sizeof (uword)); + + nm->nsh_entry_by_key = hash_create_mem (0, sizeof (u32), sizeof (uword)); + + nm->nsh_proxy_session_by_key + = + hash_create_mem (0, sizeof (nsh_proxy_session_by_key_t), sizeof (uword)); + + nm->nsh_option_map_by_key + = hash_create_mem (0, sizeof (nsh_option_map_by_key_t), sizeof (uword)); + + name = format (0, "nsh_%08x%c", api_version, 0); + + /* Set up the API */ + nm->msg_id_base = vl_msg_api_get_msg_ids + ((char *) name, VL_MSG_FIRST_AVAILABLE); + + error = nsh_plugin_api_hookup (vm); + + /* Add our API messages to the global name_crc hash table */ + setup_message_id_table (nm, &api_main); + + /* Add dispositions to nodes that feed nsh-input */ + //alagalah - validate we don't really need to use the node value + next_node = + vlib_node_add_next (vm, vxlan4_gpe_input_node.index, + nsh_input_node.index); + vlib_node_add_next (vm, vxlan4_gpe_input_node.index, nsh_proxy_node.index); + vlib_node_add_next (vm, vxlan4_gpe_input_node.index, + nsh_aware_vnf_proxy_node.index); + vxlan_gpe_register_decap_protocol (VXLAN_GPE_PROTOCOL_NSH, next_node); + + vlib_node_add_next (vm, vxlan6_gpe_input_node.index, nsh_input_node.index); + vlib_node_add_next (vm, vxlan6_gpe_input_node.index, nsh_proxy_node.index); + vlib_node_add_next (vm, vxlan6_gpe_input_node.index, + nsh_aware_vnf_proxy_node.index); + + vlib_node_add_next (vm, gre4_input_node.index, nsh_input_node.index); + vlib_node_add_next (vm, gre4_input_node.index, nsh_proxy_node.index); + vlib_node_add_next (vm, gre4_input_node.index, + nsh_aware_vnf_proxy_node.index); + + vlib_node_add_next (vm, gre6_input_node.index, nsh_input_node.index); + vlib_node_add_next (vm, gre6_input_node.index, nsh_proxy_node.index); + vlib_node_add_next (vm, gre6_input_node.index, + nsh_aware_vnf_proxy_node.index); + + /* Add NSH-Proxy support */ + vlib_node_add_next (vm, vxlan4_input_node.index, nsh_proxy_node.index); + vlib_node_add_next (vm, vxlan6_input_node.index, nsh_proxy_node.index); + + /* Add NSH-Classifier support */ + vlib_node_add_next (vm, ip4_classify_node.index, nsh_classifier_node.index); + vlib_node_add_next (vm, ip6_classify_node.index, nsh_classifier_node.index); + vlib_node_add_next (vm, l2_input_classify_node.index, + nsh_classifier_node.index); + + /* Add Ethernet+NSH support */ + ethernet_register_input_type (vm, ETHERNET_TYPE_NSH, nsh_input_node.index); + + vec_free (name); + + return error; +} + +VLIB_INIT_FUNCTION (nsh_init); + +/* *INDENT-OFF* */ +VLIB_PLUGIN_REGISTER () = { + .version = VPP_BUILD_VER, + .description = "Network Service Header", +}; +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/nsh/nsh.h b/src/plugins/nsh/nsh.h new file mode 100644 index 00000000000..1b14567078b --- /dev/null +++ b/src/plugins/nsh/nsh.h @@ -0,0 +1,271 @@ +/* + * Copyright (c) 2015 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. + */ +#ifndef included_nsh_h +#define included_nsh_h + +#include <vnet/vnet.h> +#include <nsh/nsh_packet.h> +#include <vnet/ip/ip4_packet.h> + +typedef struct { + u16 class; + u8 type; + u8 pad; +} nsh_option_map_by_key_t; + +typedef struct { + u32 option_id; +} nsh_option_map_t; + +#define MAX_METADATA_LEN 62 +/** Note: + * rewrite and rewrite_size used to support varied nsh header + */ +typedef struct { + /* Required for pool_get_aligned */ + CLIB_CACHE_LINE_ALIGN_MARK (cacheline0); + + nsh_base_header_t nsh_base; + union { + nsh_md1_data_t md1_data; + nsh_md2_data_t md2_data; + } md; + u8 tlvs_len; /* configured md2 metadata's length, unit: byte */ + u8 * tlvs_data; /* configured md2 metadata, network order */ + + /** Rewrite string. network order + * contains base header and metadata */ + u8 * rewrite; + u8 rewrite_size; /* unit: byte */ +} nsh_entry_t; + +typedef struct { + u8 is_add; + nsh_entry_t nsh_entry; +} nsh_add_del_entry_args_t; + +typedef struct { + /* Required for pool_get_aligned */ + CLIB_CACHE_LINE_ALIGN_MARK (cacheline0); + + /** Key for nsh_header_t entry: 24bit NSP 8bit NSI */ + u32 nsp_nsi; + /** Key for nsh_header_t entry to map to. : 24bit NSP 8bit NSI + * This may be ~0 if next action is to decap to NSH next protocol + * Note the following heuristic: + * if nsp_nsi == mapped_nsp_nsi then use-case is like SFC SFF + * if nsp_nsi != mapped_nsp_nsi then use-case is like SFC SF + * Note: these are heuristics. Rules about NSI decrement are out of scope + */ + u32 mapped_nsp_nsi; + /* NSH Header action: swap, push and pop */ + u32 nsh_action; + + /** vnet intfc hw_if_index */ + u32 nsh_hw_if; + /* vnet intfc sw_if_index */ + u32 nsh_sw_if; + + /* encap if index */ + u32 sw_if_index; + u32 rx_sw_if_index; + u32 next_node; + u32 adj_index; +} nsh_map_t; + +typedef struct { + u8 is_add; + nsh_map_t map; +} nsh_add_del_map_args_t; + +typedef struct { + u32 transport_type; /* 1:vxlan; */ + u32 transport_index; /* transport's sw_if_index */ +} nsh_proxy_session_by_key_t; + +typedef struct { + /* 24bit NSP 8bit NSI */ + u32 nsp_nsi; +} nsh_proxy_session_t; + +#define MAX_MD2_OPTIONS 256 + +typedef struct { + /* API message ID base */ + u16 msg_id_base; + + /* vector of nsh_header entry instances */ + nsh_entry_t *nsh_entries; + + /* hash lookup nsh header by key: {u32: nsp_nsi} */ + uword * nsh_entry_by_key; + + /* vector of nsh_mappings */ + nsh_map_t *nsh_mappings; + + /* hash lookup nsh mapping by key: {u32: nsp_nsi} */ + uword * nsh_mapping_by_key; + uword * nsh_mapping_by_mapped_key; // for use in NSHSFC + + /* vector of nsh_proxy */ + nsh_proxy_session_t *nsh_proxy_sessions; + + /* hash lookup nsh_proxy by key */ + uword * nsh_proxy_session_by_key; + + /** Free vlib hw_if_indices */ + u32 * free_nsh_tunnel_hw_if_indices; + /** Mapping from sw_if_index to tunnel index */ + u32 * tunnel_index_by_sw_if_index; + + /* vector of nsh_option_map */ + nsh_option_map_t * nsh_option_mappings; + /* hash lookup nsh_option_map by key */ + uword * nsh_option_map_by_key; + + /* Array of function pointers to process MD-Type 2 handling routines */ + /* + * For API or CLI configuration and construct the rewrite buffer, invokes add_options() function. + * In the encap node, i.e. when performing PUSH nsh header, invokes options() function. + * In the swap node, i.e. when performing SWAP nsh header, invokes swap_options() function. + * In the decap node, i.e. when performing POP nsh header, invokes pop_options() function. + */ + u8 options_size[MAX_MD2_OPTIONS]; /* sum of header and metadata */ + int (*add_options[MAX_MD2_OPTIONS]) (u8 * opt, + u8 * opt_size); + int (*options[MAX_MD2_OPTIONS]) (vlib_buffer_t * b, + nsh_tlv_header_t * opt); + int (*swap_options[MAX_MD2_OPTIONS]) (vlib_buffer_t * b, + nsh_tlv_header_t * old_opt, + nsh_tlv_header_t * new_opt); + int (*pop_options[MAX_MD2_OPTIONS]) (vlib_buffer_t * b, + nsh_tlv_header_t * opt); + u8 *(*trace[MAX_MD2_OPTIONS]) (u8 * s, nsh_tlv_header_t * opt); + uword decap_v4_next_override; + + /* Feature arc indices */ + u8 input_feature_arc_index; + u8 output_feature_arc_index; + + /* convenience */ + vlib_main_t * vlib_main; + vnet_main_t * vnet_main; +} nsh_main_t; + +nsh_main_t nsh_main; + +extern vlib_node_registration_t nsh_aware_vnf_proxy_node; +extern vlib_node_registration_t nsh_eth_output_node; + +typedef struct { + u8 trace_data[256]; +} nsh_input_trace_t; + +u8 * format_nsh_input_map_trace (u8 * s, va_list * args); +u8 * format_nsh_header_with_length (u8 * s, va_list * args); + +/* Helper macros used in nsh.c and nsh_test.c */ +#define foreach_copy_nsh_base_hdr_field \ +_(ver_o_c) \ +_(length) \ +_(md_type) \ +_(next_protocol) \ +_(nsp_nsi) + +/* Statistics (not really errors) */ +#define foreach_nsh_node_error \ +_(MAPPED, "NSH header found and mapped") \ +_(NO_MAPPING, "no mapping for nsh key") \ +_(NO_ENTRY, "no entry for nsh key") \ +_(NO_PROXY, "no proxy for transport key") \ +_(INVALID_NEXT_PROTOCOL, "invalid next protocol") \ +_(INVALID_OPTIONS, "invalid md2 options") \ +_(INVALID_TTL, "ttl equals zero") \ + +typedef enum { +#define _(sym,str) NSH_NODE_ERROR_##sym, + foreach_nsh_node_error +#undef _ + NSH_NODE_N_ERROR, + +} nsh_input_error_t; + +#define foreach_nsh_node_next \ + _(DROP, "error-drop") \ + _(ENCAP_GRE4, "gre4-input" ) \ + _(ENCAP_GRE6, "gre6-input" ) \ + _(ENCAP_VXLANGPE, "vxlan-gpe-encap" ) \ + _(ENCAP_VXLAN4, "vxlan4-encap" ) \ + _(ENCAP_VXLAN6, "vxlan6-encap" ) \ + _(DECAP_ETH_INPUT, "ethernet-input" ) \ + _(ENCAP_LISP_GPE, "interface-output" ) \ + _(ENCAP_ETHERNET, "nsh-eth-output") \ +/* _(DECAP_IP4_INPUT, "ip4-input") \ */ +/* _(DECAP_IP6_INPUT, "ip6-input" ) \ */ + +typedef enum { +#define _(s,n) NSH_NODE_NEXT_##s, + foreach_nsh_node_next +#undef _ + NSH_NODE_N_NEXT, +} nsh_node_next_t; + +typedef enum { + NSH_ACTION_SWAP, + NSH_ACTION_PUSH, + NSH_ACTION_POP, +} nsh_action_type; + +typedef enum { + NSH_INPUT_TYPE, + NSH_PROXY_TYPE, + NSH_CLASSIFIER_TYPE, + NSH_AWARE_VNF_PROXY_TYPE, +} nsh_entity_type; + +#define VNET_SW_INTERFACE_FLAG_ADMIN_DOWN 0 + +/* md2 class and type definition */ +#define NSH_MD2_IOAM_CLASS 0x9 +#define NSH_MD2_IOAM_OPTION_TYPE_TRACE 0x3B +#define NSH_MD2_IOAM_OPTION_TYPE_PROOF_OF_TRANSIT 0x3C + +#define NSH_MD2_IOAM_TRACE_DUMMY_LEN 0x8 + +#define MAX_NSH_HEADER_LEN 256 +#define MAX_NSH_OPTION_LEN 128 + +int +nsh_md2_register_option (u16 class, + u8 type, + u8 option_size, + int add_options (u8 * opt, + u8 * opt_size), + int options(vlib_buffer_t * b, + nsh_tlv_header_t * opt), + int swap_options (vlib_buffer_t * b, + nsh_tlv_header_t * old_opt, + nsh_tlv_header_t * new_opt), + int pop_options (vlib_buffer_t * b, + nsh_tlv_header_t * opt), + u8 * trace (u8 * s, + nsh_tlv_header_t * opt)); + +typedef struct _nsh_main_dummy +{ + u8 output_feature_arc_index; +} nsh_main_dummy_t; + +#endif /* included_nsh_h */ diff --git a/src/plugins/nsh/nsh_error.def b/src/plugins/nsh/nsh_error.def new file mode 100644 index 00000000000..c54e3b895c8 --- /dev/null +++ b/src/plugins/nsh/nsh_error.def @@ -0,0 +1,17 @@ +/* + * Copyright (c) 2015 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. + */ +nsh_input_error (DECAPSULATED, "good packets decapsulated") +nsh_input_error (NO_MAPPING, "no mapping for nsh key") +nsh_input_error (INVALID_NEXT_PROTOCOL, "invalid next protocol")
\ No newline at end of file diff --git a/src/plugins/nsh/nsh_output.c b/src/plugins/nsh/nsh_output.c new file mode 100644 index 00000000000..f0ac673cf61 --- /dev/null +++ b/src/plugins/nsh/nsh_output.c @@ -0,0 +1,520 @@ +/* + * nsh_output.c: NSH Adj rewrite + * + * Copyright (c) 2017-2019 Intel 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 <vlib/vlib.h> +#include <vnet/pg/pg.h> +#include <vnet/ip/ip.h> +#include <nsh/nsh.h> + +typedef struct { + /* Adjacency taken. */ + u32 adj_index; + u32 flow_hash; + + /* Packet data, possibly *after* rewrite. */ + u8 packet_data[64 - 1*sizeof(u32)]; +} nsh_output_trace_t; + +#define foreach_nsh_output_next \ +_(DROP, "error-drop") \ +_(INTERFACE, "interface-output" ) + +typedef enum { +#define _(s,n) NSH_OUTPUT_NEXT_##s, + foreach_nsh_output_next +#undef _ + NSH_OUTPUT_N_NEXT, +} nsh_output_next_t; + +static u8 * +format_nsh_output_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 *); + nsh_output_trace_t * t = va_arg (*args, nsh_output_trace_t *); + uword indent = format_get_indent (s); + + s = format (s, "adj-idx %d : %U flow hash: 0x%08x", + t->adj_index, + format_ip_adjacency, t->adj_index, FORMAT_IP_ADJACENCY_NONE, + t->flow_hash); + s = format (s, "\n%U%U", + format_white_space, indent, + format_ip_adjacency_packet_data, + t->adj_index, t->packet_data, sizeof (t->packet_data)); + return s; +} + +static inline uword +nsh_output_inline (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame, + int is_midchain) +{ + u32 n_left_from, next_index, * from, * to_next, thread_index; + vlib_node_runtime_t * error_node; + u32 n_left_to_next; + nsh_main_t *nm; + + thread_index = vlib_get_thread_index(); + error_node = vlib_node_get_runtime (vm, nsh_eth_output_node.index); + from = vlib_frame_vector_args (from_frame); + n_left_from = from_frame->n_vectors; + next_index = node->cached_next_index; + nm = &nsh_main; + + while (n_left_from > 0) + { + vlib_get_next_frame (vm, node, next_index, + to_next, n_left_to_next); + + while (n_left_from >= 4 && n_left_to_next >= 2) + { + ip_adjacency_t * adj0; + nsh_base_header_t *hdr0; + ethernet_header_t * eth_hdr0; + vlib_buffer_t * p0; + u32 pi0, rw_len0, adj_index0, next0, error0; + + ip_adjacency_t * adj1; + nsh_base_header_t *hdr1; + ethernet_header_t * eth_hdr1; + vlib_buffer_t * p1; + u32 pi1, rw_len1, adj_index1, next1, error1; + + /* Prefetch next iteration. */ + { + vlib_buffer_t * p2, * p3; + + p2 = vlib_get_buffer (vm, from[2]); + p3 = vlib_get_buffer (vm, from[3]); + + vlib_prefetch_buffer_header (p2, STORE); + vlib_prefetch_buffer_header (p3, STORE); + + CLIB_PREFETCH (p2->data, sizeof (hdr0[0]), STORE); + CLIB_PREFETCH (p3->data, sizeof (hdr1[0]), STORE); + } + + pi0 = to_next[0] = from[0]; + pi1 = to_next[1] = from[1]; + + from += 2; + n_left_from -= 2; + to_next += 2; + n_left_to_next -= 2; + + p0 = vlib_get_buffer (vm, pi0); + p1 = vlib_get_buffer (vm, pi1); + + adj_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX]; + adj_index1 = vnet_buffer (p1)->ip.adj_index[VLIB_TX]; + + adj0 = adj_get(adj_index0); + adj1 = adj_get(adj_index1); + hdr0 = vlib_buffer_get_current (p0); + hdr1 = vlib_buffer_get_current (p1); + + /* Guess we are only writing on simple Ethernet header. */ + vnet_rewrite_two_headers (adj0[0], adj1[0], hdr0, hdr1, + sizeof (ethernet_header_t)); + + eth_hdr0 = (ethernet_header_t*)((u8 *)hdr0-sizeof(ethernet_header_t)); + eth_hdr0->type = clib_host_to_net_u16(ETHERNET_TYPE_NSH); + eth_hdr1 = (ethernet_header_t*)((u8 *)hdr1-sizeof(ethernet_header_t)); + eth_hdr1->type = clib_host_to_net_u16(ETHERNET_TYPE_NSH); + + /* Update packet buffer attributes/set output interface. */ + rw_len0 = adj0[0].rewrite_header.data_bytes; + rw_len1 = adj1[0].rewrite_header.data_bytes; + + /* Bump the adj counters for packet and bytes */ + vlib_increment_combined_counter + (&adjacency_counters, + thread_index, + adj_index0, + 1, + vlib_buffer_length_in_chain (vm, p0) + rw_len0); + vlib_increment_combined_counter + (&adjacency_counters, + thread_index, + adj_index1, + 1, + vlib_buffer_length_in_chain (vm, p1) + rw_len1); + + /* Check MTU of outgoing interface. */ + if (PREDICT_TRUE(vlib_buffer_length_in_chain (vm, p0) <= + adj0[0].rewrite_header.max_l3_packet_bytes)) + { + p0->current_data -= rw_len0; + p0->current_length += rw_len0; + + vnet_buffer (p0)->sw_if_index[VLIB_TX] = + adj0[0].rewrite_header.sw_if_index; + next0 = NSH_OUTPUT_NEXT_INTERFACE; + error0 = IP4_ERROR_NONE; + + if (PREDICT_FALSE(adj0[0].rewrite_header.flags & VNET_REWRITE_HAS_FEATURES)) + vnet_feature_arc_start (nm->output_feature_arc_index, + adj0[0].rewrite_header.sw_if_index, + &next0, p0); + } + else + { + error0 = IP4_ERROR_MTU_EXCEEDED; + next0 = NSH_OUTPUT_NEXT_DROP; + } + if (PREDICT_TRUE(vlib_buffer_length_in_chain (vm, p1) <= + adj1[0].rewrite_header.max_l3_packet_bytes)) + { + p1->current_data -= rw_len1; + p1->current_length += rw_len1; + + vnet_buffer (p1)->sw_if_index[VLIB_TX] = + adj1[0].rewrite_header.sw_if_index; + next1 = NSH_OUTPUT_NEXT_INTERFACE; + error1 = IP4_ERROR_NONE; + + if (PREDICT_FALSE(adj1[0].rewrite_header.flags & VNET_REWRITE_HAS_FEATURES)) + vnet_feature_arc_start (nm->output_feature_arc_index, + adj1[0].rewrite_header.sw_if_index, + &next1, p1); + } + else + { + error1 = IP4_ERROR_MTU_EXCEEDED; + next1 = NSH_OUTPUT_NEXT_DROP; + } + if (is_midchain) + { + adj0->sub_type.midchain.fixup_func + (vm, adj0, p0, adj0->sub_type.midchain.fixup_data); + adj1->sub_type.midchain.fixup_func + (vm, adj1, p1, adj1->sub_type.midchain.fixup_data); + } + + p0->error = error_node->errors[error0]; + p1->error = error_node->errors[error1]; + + if (PREDICT_FALSE(p0->flags & VLIB_BUFFER_IS_TRACED)) + { + nsh_output_trace_t *tr = vlib_add_trace (vm, node, + p0, sizeof (*tr)); + tr->adj_index = vnet_buffer(p0)->ip.adj_index[VLIB_TX]; + tr->flow_hash = vnet_buffer(p0)->ip.flow_hash; + } + if (PREDICT_FALSE(p1->flags & VLIB_BUFFER_IS_TRACED)) + { + nsh_output_trace_t *tr = vlib_add_trace (vm, node, + p1, sizeof (*tr)); + tr->adj_index = vnet_buffer(p1)->ip.adj_index[VLIB_TX]; + tr->flow_hash = vnet_buffer(p1)->ip.flow_hash; + } + + vlib_validate_buffer_enqueue_x2 (vm, node, next_index, + to_next, n_left_to_next, + pi0, pi1, next0, next1); + } + + while (n_left_from > 0 && n_left_to_next > 0) + { + ip_adjacency_t * adj0; + nsh_base_header_t *hdr0; + ethernet_header_t * eth_hdr0; + vlib_buffer_t * p0; + u32 pi0, rw_len0, adj_index0, next0, error0; + + pi0 = to_next[0] = from[0]; + + p0 = vlib_get_buffer (vm, pi0); + + adj_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX]; + + adj0 = adj_get(adj_index0); + hdr0 = vlib_buffer_get_current (p0); + + /* Guess we are only writing on simple Ethernet header. */ + vnet_rewrite_one_header (adj0[0], hdr0, + sizeof (ethernet_header_t)); + + eth_hdr0 = (ethernet_header_t*)((u8 *)hdr0-sizeof(ethernet_header_t)); + eth_hdr0->type = clib_host_to_net_u16(ETHERNET_TYPE_NSH); + + /* Update packet buffer attributes/set output interface. */ + rw_len0 = adj0[0].rewrite_header.data_bytes; + + vlib_increment_combined_counter + (&adjacency_counters, + thread_index, + adj_index0, + 1, + vlib_buffer_length_in_chain (vm, p0) + rw_len0); + + /* Check MTU of outgoing interface. */ + if (PREDICT_TRUE(vlib_buffer_length_in_chain (vm, p0) <= + adj0[0].rewrite_header.max_l3_packet_bytes)) + { + p0->current_data -= rw_len0; + p0->current_length += rw_len0; + + vnet_buffer (p0)->sw_if_index[VLIB_TX] = + adj0[0].rewrite_header.sw_if_index; + next0 = NSH_OUTPUT_NEXT_INTERFACE; + error0 = IP4_ERROR_NONE; + + if (PREDICT_FALSE(adj0[0].rewrite_header.flags & VNET_REWRITE_HAS_FEATURES)) + vnet_feature_arc_start (nm->output_feature_arc_index, + adj0[0].rewrite_header.sw_if_index, + &next0, p0); + } + else + { + error0 = IP4_ERROR_MTU_EXCEEDED; + next0 = NSH_OUTPUT_NEXT_DROP; + } + if (is_midchain) + { + adj0->sub_type.midchain.fixup_func + (vm, adj0, p0, adj0->sub_type.midchain.fixup_data); + } + + p0->error = error_node->errors[error0]; + + from += 1; + n_left_from -= 1; + to_next += 1; + n_left_to_next -= 1; + + if (PREDICT_FALSE(p0->flags & VLIB_BUFFER_IS_TRACED)) + { + nsh_output_trace_t *tr = vlib_add_trace (vm, node, + p0, sizeof (*tr)); + tr->adj_index = vnet_buffer(p0)->ip.adj_index[VLIB_TX]; + tr->flow_hash = vnet_buffer(p0)->ip.flow_hash; + } + + vlib_validate_buffer_enqueue_x1 (vm, node, next_index, + to_next, n_left_to_next, + pi0, next0); + } + + vlib_put_next_frame (vm, node, next_index, n_left_to_next); + } + + return from_frame->n_vectors; +} + +typedef enum nsh_midchain_next_t_ +{ + NSH_MIDCHAIN_NEXT_DROP, +} nsh_midchain_next_t; + +static inline uword +nsh_eth_output (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + return (nsh_output_inline(vm, node, from_frame, /* is_midchain */ 0)); +} + +VLIB_REGISTER_NODE (nsh_eth_output_node) = { + .function = nsh_eth_output, + .name = "nsh-eth-output", + /* Takes a vector of packets. */ + .vector_size = sizeof (u32), + .n_next_nodes = NSH_OUTPUT_N_NEXT, + .next_nodes = { +#define _(s,n) [NSH_OUTPUT_NEXT_##s] = n, + foreach_nsh_output_next +#undef _ + }, + + .format_trace = format_nsh_output_trace, +}; + +VLIB_NODE_FUNCTION_MULTIARCH (nsh_eth_output_node, nsh_eth_output) + +static inline uword +nsh_midchain (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + return (nsh_output_inline(vm, node, from_frame, /* is_midchain */ 1)); +} + +VLIB_REGISTER_NODE (nsh_midchain_node) = { + .function = nsh_midchain, + .name = "nsh-midchain", + .vector_size = sizeof (u32), + .format_trace = format_nsh_output_trace, + .n_next_nodes = 1, + .next_nodes = { + [NSH_MIDCHAIN_NEXT_DROP] = "error-drop", + }, +}; + +VLIB_NODE_FUNCTION_MULTIARCH (nsh_midchain_node, nsh_midchain) + +/* Built-in nsh tx feature path definition */ +VNET_FEATURE_INIT (nsh_interface_output, static) = { + .arc_name = "nsh-eth-output", + .node_name = "interface-output", + .runs_before = 0, /* not before any other features */ +}; + +/* Built-in ip4 tx feature path definition */ +/* *INDENT-OFF* */ +VNET_FEATURE_ARC_INIT (nsh_eth_output, static) = +{ + .arc_name = "nsh-eth-output", + .start_nodes = VNET_FEATURES ("nsh-midchain"), +}; + +VNET_FEATURE_INIT (nsh_eth_tx_drop, static) = +{ + .arc_name = "nsh-eth-output", + .node_name = "error-drop", + .runs_before = 0, /* not before any other features */ +}; +/* *INDENT-ON* */ +/** + * @brief Next index values from the NSH incomplete adj node + */ +#define foreach_nsh_adj_incomplete_next \ +_(DROP, "error-drop") \ +_(IP4, "ip4-arp") \ +_(IP6, "ip6-discover-neighbor") + +typedef enum { +#define _(s,n) NSH_ADJ_INCOMPLETE_NEXT_##s, + foreach_nsh_adj_incomplete_next +#undef _ + NSH_ADJ_INCOMPLETE_N_NEXT, +} nsh_adj_incomplete_next_t; + +/** + * @brief A struct to hold tracing information for the NSH label imposition + * node. + */ +typedef struct nsh_adj_incomplete_trace_t_ +{ + u32 next; +} nsh_adj_incomplete_trace_t; + + +/** + * @brief Graph node for incomplete NSH adjacency. + * This node will push traffic to either the v4-arp or v6-nd node + * based on the next-hop proto of the adj. + * We pay a cost for this 'routing' node, but an incomplete adj is the + * exception case. + */ +static inline uword +nsh_adj_incomplete (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + u32 n_left_from, next_index, * from, * to_next; + + from = vlib_frame_vector_args (from_frame); + n_left_from = from_frame->n_vectors; + next_index = node->cached_next_index; + + while (n_left_from > 0) + { + u32 n_left_to_next; + + vlib_get_next_frame (vm, node, next_index, + to_next, n_left_to_next); + + while (n_left_from > 0 && n_left_to_next > 0) + { + u32 pi0, next0, adj_index0; + ip_adjacency_t * adj0; + vlib_buffer_t * p0; + + pi0 = to_next[0] = from[0]; + p0 = vlib_get_buffer (vm, pi0); + from += 1; + n_left_from -= 1; + to_next += 1; + n_left_to_next -= 1; + + adj_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX]; + + adj0 = adj_get(adj_index0); + + if (PREDICT_TRUE(FIB_PROTOCOL_IP4 == adj0->ia_nh_proto)) + { + next0 = NSH_ADJ_INCOMPLETE_NEXT_IP4; + } + else + { + next0 = NSH_ADJ_INCOMPLETE_NEXT_IP6; + } + + if (PREDICT_FALSE(p0->flags & VLIB_BUFFER_IS_TRACED)) + { + nsh_adj_incomplete_trace_t *tr = + vlib_add_trace (vm, node, p0, sizeof (*tr)); + tr->next = next0; + } + + vlib_validate_buffer_enqueue_x1 (vm, node, next_index, + to_next, n_left_to_next, + pi0, next0); + } + + vlib_put_next_frame (vm, node, next_index, n_left_to_next); + } + + return from_frame->n_vectors; +} + +static u8 * +format_nsh_adj_incomplete_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 *); + nsh_adj_incomplete_trace_t * t; + uword indent; + + t = va_arg (*args, nsh_adj_incomplete_trace_t *); + indent = format_get_indent (s); + + s = format (s, "%Unext:%d", + format_white_space, indent, + t->next); + return (s); +} + +VLIB_REGISTER_NODE (nsh_adj_incomplete_node) = { + .function = nsh_adj_incomplete, + .name = "nsh-adj-incomplete", + .format_trace = format_nsh_adj_incomplete_trace, + /* Takes a vector of packets. */ + .vector_size = sizeof (u32), + .n_next_nodes = NSH_ADJ_INCOMPLETE_N_NEXT, + .next_nodes = { +#define _(s,n) [NSH_ADJ_INCOMPLETE_NEXT_##s] = n, + foreach_nsh_adj_incomplete_next +#undef _ + }, +}; + +VLIB_NODE_FUNCTION_MULTIARCH (nsh_adj_incomplete_node, + nsh_adj_incomplete) diff --git a/src/plugins/nsh/nsh_packet.h b/src/plugins/nsh/nsh_packet.h new file mode 100644 index 00000000000..9d6237af551 --- /dev/null +++ b/src/plugins/nsh/nsh_packet.h @@ -0,0 +1,116 @@ +/* + * Copyright (c) 2015 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. + */ +#ifndef included_nsh_packet_h +#define included_nsh_packet_h + +/* + * NSH packet format from draft-quinn-sfc-nsh-03.txt + * + * NSH Base Header + * 0 1 2 3 + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * |Ver|O|C| TTL | Length | MD Type | Next Protocol | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * + * + * Base Header Field Descriptions: + * + * Version: The version field is used to ensure backward compatibility + * going forward with future NSH updates. + * + * O bit: Indicates that this packet is an operations and management + * (OAM) packet. SFF and SFs nodes MUST examine the payload and take + * appropriate action (e.g. return status information). + * + * OAM message specifics and handling details are outside the scope of + * this document. + * + * C bit: Indicates that a critical metadata TLV is present (see section + * 7). This bit acts as an indication for hardware implementers to + * decide how to handle the presence of a critical TLV without + * necessarily needing to parse all TLVs present. The C bit MUST be set + * to 1 if one or more critical TLVs are present. + * + * All other flag fields are reserved. + * + * Length: total length, in 4 byte words, of the NSH header, including + * optional variable TLVs. Length must be equal or greater than 6. + * + * MD Type: indicates the format of NSH beyond the base header and the + * type of metadata being carried. This typing is used to describe the + * use for the metadata. A new registry will be requested from IANA for + * the MD Type. NSH defines one type, type = 0x1 which indicates that + * the format of the header is as per this draft. + * + * The format of the base header is invariant, and not described by MD + * Type. + * + * Next Protocol: indicates the protocol type of the original packet. A + * new IANA registry will be created for protocol type. + * + * This draft defines the following Next Protocol values: + * + * 0x1 : IPv4 + * 0x2 : IPv6 + * 0x3 : Ethernet + */ + +typedef CLIB_PACKED(struct { + u8 ver_o_c; //TTL: high 4 bit + u8 length; //TTL: low 2 bit + u8 md_type; + u8 next_protocol; + u32 nsp_nsi; // nsp 24 bits, nsi 8 bits +}) nsh_base_header_t; + +typedef CLIB_PACKED(struct { + /* Context headers, always present */ + u32 c1; + u32 c2; + u32 c3; + u32 c4; +}) nsh_md1_data_t; + +typedef CLIB_PACKED(struct { + u16 class; + u8 type; + u8 length; +}) nsh_tlv_header_t; + +typedef nsh_tlv_header_t nsh_md2_data_t; + +typedef CLIB_PACKED(struct { + nsh_base_header_t nsh_base; + union { + nsh_md1_data_t md1_data; + nsh_md2_data_t md2_data; + } md; +}) nsh_header_t; + +#define NSH_VERSION (0<<6) +#define NSH_O_BIT (1<<5) +#define NSH_C_BIT (1<<4) + +#define NSH_TTL_H4_MASK 0xF +#define NSH_TTL_L2_MASK 0xC0 +#define NSH_LEN_MASK 0x3F + +/* Network byte order shift / mask */ +#define NSH_NSI_MASK 0xFF +#define NSH_NSP_MASK (0x00FFFFFF) +#define NSH_NSP_SHIFT 8 + +#endif /* included_nsh_packet_h */ diff --git a/src/plugins/nsh/nsh_pop.c b/src/plugins/nsh/nsh_pop.c new file mode 100644 index 00000000000..cd25bb9e3f7 --- /dev/null +++ b/src/plugins/nsh/nsh_pop.c @@ -0,0 +1,365 @@ +/* + * nsh_pop.c - nsh POP only processing + * + * Copyright (c) 2017 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 <vnet/plugin/plugin.h> +#include <nsh/nsh.h> +#include <vnet/gre/gre.h> +#include <vnet/vxlan/vxlan.h> +#include <vnet/vxlan-gpe/vxlan_gpe.h> +#include <vnet/l2/l2_classify.h> + +#include <vlibapi/api.h> +#include <vlibmemory/api.h> + +extern nsh_option_map_t * nsh_md2_lookup_option (u16 class, u8 type); + +extern u8 * format_nsh_header (u8 * s, va_list * args); +extern u8 * format_nsh_node_map_trace (u8 * s, va_list * args); + +/* format from network order */ +u8 * format_nsh_pop_header (u8 * s, va_list * args) +{ + return format_nsh_header(s, args); +} + + + +u8 * format_nsh_pop_node_map_trace (u8 * s, va_list * args) +{ + return format_nsh_node_map_trace(s, args); +} + + +static uword +nsh_pop_inline (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + u32 n_left_from, next_index, *from, *to_next; + nsh_main_t * nm = &nsh_main; + + from = vlib_frame_vector_args(from_frame); + n_left_from = from_frame->n_vectors; + + next_index = node->cached_next_index; + + while (n_left_from > 0) + { + u32 n_left_to_next; + + vlib_get_next_frame(vm, node, next_index, to_next, n_left_to_next); + + while (n_left_from >= 4 && n_left_to_next >= 2) + { + u32 bi0, bi1; + vlib_buffer_t * b0, *b1; + u32 next0 = NSH_NODE_NEXT_DROP, next1 = NSH_NODE_NEXT_DROP; + uword * entry0, *entry1; + nsh_base_header_t * hdr0 = 0, *hdr1 = 0; + u32 header_len0 = 0, header_len1 = 0; + u32 nsp_nsi0, nsp_nsi1; + u32 error0, error1; + nsh_map_t * map0 = 0, *map1 = 0; + + /* Prefetch next iteration. */ + { + vlib_buffer_t * p2, *p3; + + p2 = vlib_get_buffer(vm, from[2]); + p3 = vlib_get_buffer(vm, from[3]); + + vlib_prefetch_buffer_header(p2, LOAD); + vlib_prefetch_buffer_header(p3, LOAD); + + CLIB_PREFETCH(p2->data, 2*CLIB_CACHE_LINE_BYTES, LOAD); + CLIB_PREFETCH(p3->data, 2*CLIB_CACHE_LINE_BYTES, LOAD); + } + + bi0 = from[0]; + bi1 = from[1]; + to_next[0] = bi0; + to_next[1] = bi1; + from += 2; + to_next += 2; + n_left_from -= 2; + n_left_to_next -= 2; + + error0 = 0; + error1 = 0; + + b0 = vlib_get_buffer(vm, bi0); + b1 = vlib_get_buffer(vm, bi1); + hdr0 = vlib_buffer_get_current(b0); + nsp_nsi0 = hdr0->nsp_nsi; + header_len0 = hdr0->length * 4; + + hdr1 = vlib_buffer_get_current(b1); + nsp_nsi1 = hdr1->nsp_nsi; + header_len1 = hdr1->length * 4; + + /* Process packet 0 */ + entry0 = hash_get_mem(nm->nsh_mapping_by_key, &nsp_nsi0); + if (PREDICT_FALSE(entry0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_MAPPING; + goto trace0; + } + + /* Entry should point to a mapping ...*/ + map0 = pool_elt_at_index(nm->nsh_mappings, entry0[0]); + if (PREDICT_FALSE(map0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_MAPPING; + goto trace0; + } + + /* set up things for next node to transmit ie which node to handle it and where */ + next0 = map0->next_node; + //vnet_buffer(b0)->sw_if_index[VLIB_TX] = map0->sw_if_index; + + if(PREDICT_FALSE(map0->nsh_action == NSH_ACTION_POP)) + { + /* Manipulate MD2 */ + if(PREDICT_FALSE(hdr0->md_type == 2)) + { + if (PREDICT_FALSE(next0 == NSH_NODE_NEXT_DROP)) + { + error0 = NSH_NODE_ERROR_INVALID_OPTIONS; + goto trace0; + } + //vnet_buffer(b0)->sw_if_index[VLIB_RX] = map0->sw_if_index; + } + + /* Pop NSH header */ + vlib_buffer_advance(b0, (word)header_len0); + goto trace0; + } + + entry0 = hash_get_mem(nm->nsh_entry_by_key, &map0->mapped_nsp_nsi); + if (PREDICT_FALSE(entry0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_ENTRY; + goto trace0; + } + + trace0: b0->error = error0 ? node->errors[error0] : 0; + + if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) + { + nsh_input_trace_t *tr = vlib_add_trace(vm, node, b0, sizeof(*tr)); + clib_memcpy ( &(tr->trace_data), hdr0, (hdr0->length*4) ); + } + + /* Process packet 1 */ + entry1 = hash_get_mem(nm->nsh_mapping_by_key, &nsp_nsi1); + if (PREDICT_FALSE(entry1 == 0)) + { + error1 = NSH_NODE_ERROR_NO_MAPPING; + goto trace1; + } + + /* Entry should point to a mapping ...*/ + map1 = pool_elt_at_index(nm->nsh_mappings, entry1[0]); + if (PREDICT_FALSE(map1 == 0)) + { + error1 = NSH_NODE_ERROR_NO_MAPPING; + goto trace1; + } + + /* set up things for next node to transmit ie which node to handle it and where */ + next1 = map1->next_node; + //vnet_buffer(b1)->sw_if_index[VLIB_TX] = map1->sw_if_index; + + if(PREDICT_FALSE(map1->nsh_action == NSH_ACTION_POP)) + { + /* Manipulate MD2 */ + if(PREDICT_FALSE(hdr1->md_type == 2)) + { + if (PREDICT_FALSE(next1 == NSH_NODE_NEXT_DROP)) + { + error1 = NSH_NODE_ERROR_INVALID_OPTIONS; + goto trace1; + } + //vnet_buffer(b1)->sw_if_index[VLIB_RX] = map1->sw_if_index; + } + + /* Pop NSH header */ + vlib_buffer_advance(b1, (word)header_len1); + goto trace1; + } + + entry1 = hash_get_mem(nm->nsh_entry_by_key, &map1->mapped_nsp_nsi); + if (PREDICT_FALSE(entry1 == 0)) + { + error1 = NSH_NODE_ERROR_NO_ENTRY; + goto trace1; + } + + + trace1: b1->error = error1 ? node->errors[error1] : 0; + + if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED)) + { + nsh_input_trace_t *tr = vlib_add_trace(vm, node, b1, sizeof(*tr)); + clib_memcpy ( &(tr->trace_data), hdr1, (hdr1->length*4) ); + } + + vlib_validate_buffer_enqueue_x2(vm, node, next_index, to_next, + n_left_to_next, bi0, bi1, next0, next1); + + } + + while (n_left_from > 0 && n_left_to_next > 0) + { + u32 bi0 = 0; + vlib_buffer_t * b0 = NULL; + u32 next0 = NSH_NODE_NEXT_DROP; + uword * entry0; + nsh_base_header_t * hdr0 = 0; + u32 header_len0 = 0; + u32 nsp_nsi0; + u32 error0; + nsh_map_t * map0 = 0; + + bi0 = from[0]; + to_next[0] = bi0; + from += 1; + to_next += 1; + n_left_from -= 1; + n_left_to_next -= 1; + error0 = 0; + + b0 = vlib_get_buffer(vm, bi0); + hdr0 = vlib_buffer_get_current(b0); + + nsp_nsi0 = hdr0->nsp_nsi; + header_len0 = hdr0->length * 4; + + entry0 = hash_get_mem(nm->nsh_mapping_by_key, &nsp_nsi0); + + if (PREDICT_FALSE(entry0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_MAPPING; + goto trace00; + } + + /* Entry should point to a mapping ...*/ + map0 = pool_elt_at_index(nm->nsh_mappings, entry0[0]); + + if (PREDICT_FALSE(map0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_MAPPING; + goto trace00; + } + + /* set up things for next node to transmit ie which node to handle it and where */ + next0 = map0->next_node; + //vnet_buffer(b0)->sw_if_index[VLIB_TX] = map0->sw_if_index; + + if(PREDICT_FALSE(map0->nsh_action == NSH_ACTION_POP)) + { + /* Manipulate MD2 */ + if(PREDICT_FALSE(hdr0->md_type == 2)) + { + if (PREDICT_FALSE(next0 == NSH_NODE_NEXT_DROP)) + { + error0 = NSH_NODE_ERROR_INVALID_OPTIONS; + goto trace00; + } + //vnet_buffer(b0)->sw_if_index[VLIB_RX] = map0->sw_if_index; + } + + /* Pop NSH header */ + vlib_buffer_advance(b0, (word)header_len0); + goto trace00; + } + + entry0 = hash_get_mem(nm->nsh_entry_by_key, &map0->mapped_nsp_nsi); + if (PREDICT_FALSE(entry0 == 0)) + { + error0 = NSH_NODE_ERROR_NO_ENTRY; + goto trace00; + } + + trace00: b0->error = error0 ? node->errors[error0] : 0; + + if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) + { + nsh_input_trace_t *tr = vlib_add_trace(vm, node, b0, sizeof(*tr)); + clib_memcpy ( &(tr->trace_data[0]), hdr0, (hdr0->length*4) ); + } + + vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next, + n_left_to_next, bi0, next0); + } + + vlib_put_next_frame(vm, node, next_index, n_left_to_next); + + } + + return from_frame->n_vectors; +} + +/** + * @brief Graph processing dispatch function for NSH Input + * + * @node nsh_input + * @param *vm + * @param *node + * @param *from_frame + * + * @return from_frame->n_vectors + * + */ +static uword +nsh_pop (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + return nsh_pop_inline (vm, node, from_frame); +} + +static char * nsh_pop_node_error_strings[] = { +#define _(sym,string) string, + foreach_nsh_node_error +#undef _ +}; + +/* register nsh-input node */ +VLIB_REGISTER_NODE (nsh_pop_node) = { + .function = nsh_pop, + .name = "nsh-pop", + .vector_size = sizeof (u32), + .format_trace = format_nsh_pop_node_map_trace, + .format_buffer = format_nsh_pop_header, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = ARRAY_LEN(nsh_pop_node_error_strings), + .error_strings = nsh_pop_node_error_strings, + + .n_next_nodes = NSH_NODE_N_NEXT, + + .next_nodes = { +#define _(s,n) [NSH_NODE_NEXT_##s] = n, + foreach_nsh_node_next +#undef _ + }, +}; + +VLIB_NODE_FUNCTION_MULTIARCH (nsh_pop_node, nsh_pop); + + diff --git a/src/plugins/nsh/nsh_test.c b/src/plugins/nsh/nsh_test.c new file mode 100644 index 00000000000..396e84ca30d --- /dev/null +++ b/src/plugins/nsh/nsh_test.c @@ -0,0 +1,411 @@ +/* + * nsh.c - skeleton vpp-api-test plug-in + * + * Copyright (c) <current-year> <your-organization> + * 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 <vat/vat.h> +#include <vlibapi/api.h> +#include <vlibmemory/api.h> +#include <vppinfra/error.h> +#include <nsh/nsh.h> + +uword unformat_sw_if_index (unformat_input_t * input, va_list * args); + +/* define message IDs */ +#define vl_msg_id(n,h) n, +typedef enum { +#include <nsh/nsh.api.h> + /* We'll want to know how many messages IDs we need... */ + VL_MSG_FIRST_AVAILABLE, +} vl_msg_id_t; +#undef vl_msg_id + +/* define message structures */ +#define vl_typedefs +#include <nsh/nsh.api.h> +#undef vl_typedefs + +/* define generated endian-swappers */ +#define vl_endianfun +#include <nsh/nsh.api.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 <nsh/nsh.api.h> +#undef vl_printfun + +/* Get the API version number */ +#define vl_api_version(n,v) static u32 api_version=(v); +#include <nsh/nsh.api.h> +#undef vl_api_version + +#define vl_msg_name_crc_list +#include <nsh/nsh.api.h> +#undef vl_msg_name_crc_list + + +typedef struct { + /* API message ID base */ + u16 msg_id_base; + vat_main_t *vat_main; +} nsh_test_main_t; + +nsh_test_main_t nsh_test_main; + +#define foreach_standard_reply_retval_handler \ +_(nsh_add_del_entry_reply) \ +_(nsh_add_del_map_reply) \ + +#define _(n) \ + static void vl_api_##n##_t_handler \ + (vl_api_##n##_t * mp) \ + { \ + vat_main_t * vam = nsh_test_main.vat_main; \ + i32 retval = ntohl(mp->retval); \ + if (vam->async_mode) { \ + vam->async_errors += (retval < 0); \ + } else { \ + vam->retval = retval; \ + vam->result_ready = 1; \ + } \ + } +foreach_standard_reply_retval_handler; +#undef _ + +/* + * Table of message reply handlers, must include boilerplate handlers + * we just generated + */ +#define foreach_vpe_api_reply_msg \ +_(NSH_ADD_DEL_ENTRY_REPLY, nsh_add_del_entry_reply) \ +_(NSH_ENTRY_DETAILS, nsh_entry_details) \ +_(NSH_ADD_DEL_MAP_REPLY, nsh_add_del_map_reply) \ +_(NSH_MAP_DETAILS, nsh_map_details) + + +/* M: construct, but don't yet send a message */ + +#define M(T,t) \ +do { \ + vam->result_ready = 0; \ + mp = vl_msg_api_alloc(sizeof(*mp)); \ + memset (mp, 0, sizeof (*mp)); \ + mp->_vl_msg_id = ntohs (VL_API_##T + sm->msg_id_base); \ + mp->client_index = vam->my_client_index; \ +} while(0); + +#define M2(T,t,n) \ +do { \ + vam->result_ready = 0; \ + mp = vl_msg_api_alloc(sizeof(*mp)+(n)); \ + memset (mp, 0, sizeof (*mp)); \ + mp->_vl_msg_id = ntohs (VL_API_##T + sm->msg_id_base); \ + mp->client_index = vam->my_client_index; \ +} while(0); + +/* S: send a message */ +#define S (vl_msg_api_send_shmem (vam->vl_input_queue, (u8 *)&mp)) + +/* W: wait for results, with timeout */ +#define W \ +do { \ + timeout = vat_time_now (vam) + 1.0; \ + \ + while (vat_time_now (vam) < timeout) { \ + if (vam->result_ready == 1) { \ + return (vam->retval); \ + } \ + } \ + return -99; \ +} while(0); + +static int api_nsh_add_del_entry (vat_main_t * vam) +{ + nsh_test_main_t * sm = &nsh_test_main; + unformat_input_t * line_input = vam->input; + f64 timeout; + u8 is_add = 1; + u8 ver_o_c = 0; + u8 length = 0; + u8 md_type = 0; + u8 next_protocol = 1; /* default: ip4 */ + u32 nsp; + u8 nsp_set = 0; + u32 nsi; + u8 nsi_set = 0; + u32 nsp_nsi; + u32 c1 = 0; + u32 c2 = 0; + u32 c3 = 0; + u32 c4 = 0; + u32 tmp; + vl_api_nsh_add_del_entry_t * mp; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { + if (unformat (line_input, "del")) + is_add = 0; + else if (unformat (line_input, "version %d", &tmp)) + ver_o_c |= (tmp & 3) << 6; + else if (unformat (line_input, "o-bit %d", &tmp)) + ver_o_c |= (tmp & 1) << 5; + else if (unformat (line_input, "c-bit %d", &tmp)) + ver_o_c |= (tmp & 1) << 4; + else if (unformat (line_input, "md-type %d", &tmp)) + md_type = tmp; + else if (unformat(line_input, "next-ip4")) + next_protocol = 1; + else if (unformat(line_input, "next-ip6")) + next_protocol = 2; + else if (unformat(line_input, "next-ethernet")) + next_protocol = 3; + else if (unformat (line_input, "c1 %d", &c1)) + ; + else if (unformat (line_input, "c2 %d", &c2)) + ; + else if (unformat (line_input, "c3 %d", &c3)) + ; + else if (unformat (line_input, "c4 %d", &c4)) + ; + else if (unformat (line_input, "nsp %d", &nsp)) + nsp_set = 1; + else if (unformat (line_input, "nsi %d", &nsi)) + nsi_set = 1; + else + return -99; // PARSE ERROR; + } + + unformat_free (line_input); + + if (nsp_set == 0) + return -1; //TODO Error type for this cond: clib_error_return (0, "nsp not specified"); + + if (nsi_set == 0) + return -2; //TODO Error type for this cond:clib_error_return (0, "nsi not specified"); + + if (md_type == 1) + length = 6; + else if (md_type == 2) + length = 2; /* base header length */ + + nsp_nsi = (nsp<<8) | nsi; + + /* Construct the API message */ + M(NSH_ADD_DEL_ENTRY, nsh_add_del_entry); + mp->is_add = is_add; + +#define _(x) mp->x = x; + foreach_copy_nsh_base_hdr_field; +#undef _ + + + /* send it... */ + S; + + /* Wait for a reply... */ + W; +} + +static void vl_api_nsh_entry_details_t_handler +(vl_api_nsh_entry_details_t * mp) +{ + vat_main_t * vam = &vat_main; + + fformat(vam->ofp, "%11d%11d%11d%11d%14d%14d%14d%14d%14d\n", + mp->ver_o_c, + mp->length, + mp->md_type, + mp->next_protocol, + ntohl(mp->nsp_nsi), + ntohl(mp->c1), + ntohl(mp->c2), + ntohl(mp->c3), + ntohl(mp->c4)); +} + +static int api_nsh_entry_dump (vat_main_t * vam) +{ + nsh_test_main_t * sm = &nsh_test_main; + vl_api_nsh_entry_dump_t *mp; + f64 timeout; + + if (!vam->json_output) { + fformat(vam->ofp, "%11s%11s%15s%14s%14s%13s%13s%13s%13s\n", + "ver_o_c", "length", "md_type", "next_protocol", + "nsp_nsi", "c1", "c2", "c3", "c4"); + } + + /* Get list of nsh entries */ + M(NSH_ENTRY_DUMP, nsh_entry_dump); + + /* send it... */ + S; + + /* Wait for a reply... */ + W; +} + +static int api_nsh_add_del_map (vat_main_t * vam) +{ + nsh_test_main_t * sm = &nsh_test_main; + unformat_input_t * line_input = vam->input; + f64 timeout; + u8 is_add = 1; + u32 nsp, nsi, mapped_nsp, mapped_nsi; + int nsp_set = 0, nsi_set = 0, mapped_nsp_set = 0, mapped_nsi_set = 0; + u32 next_node = ~0; + u32 sw_if_index = ~0; // temporary requirement to get this moved over to NSHSFC + vl_api_nsh_add_del_map_t * mp; + + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { + if (unformat (line_input, "del")) + is_add = 0; + else if (unformat (line_input, "nsp %d", &nsp)) + nsp_set = 1; + else if (unformat (line_input, "nsi %d", &nsi)) + nsi_set = 1; + else if (unformat (line_input, "mapped-nsp %d", &mapped_nsp)) + mapped_nsp_set = 1; + else if (unformat (line_input, "mapped-nsi %d", &mapped_nsi)) + mapped_nsi_set = 1; + else if (unformat (line_input, "encap-gre4-intf %d", &sw_if_index)) + next_node = NSH_NODE_NEXT_ENCAP_GRE4; + else if (unformat (line_input, "encap-gre6-intf %d", &sw_if_index)) + next_node = NSH_NODE_NEXT_ENCAP_GRE6; + else if (unformat (line_input, "encap-vxlan-gpe-intf %d", &sw_if_index)) + next_node = NSH_NODE_NEXT_ENCAP_VXLANGPE; + else if (unformat (line_input, "encap-none")) + next_node = NSH_NODE_NEXT_DROP; // Once moved to NSHSFC see nsh.h:foreach_nsh_input_next to handle this case + else + return -99; //TODO clib_error_return (0, "parse error: '%U'", + } + + unformat_free (line_input); + + if (nsp_set == 0 || nsi_set == 0) + return -1; // TODO create return value: clib_error_return (0, "nsp nsi pair required. Key: for NSH entry"); + + if (mapped_nsp_set == 0 || mapped_nsi_set == 0) + return -2; // TODO create return valuee clib_error_return (0, "mapped-nsp mapped-nsi pair required. Key: for NSH entry"); + + if (next_node == ~0) + return -3; //TODO clib_error_return (0, "must specific action: [encap-gre-intf <nn> | encap-vxlan-gpe-intf <nn> | encap-none]"); + + + M(NSH_ADD_DEL_MAP, nsh_add_del_map); + /* set args structure */ + mp->is_add = is_add; + mp->nsp_nsi = (nsp<< NSH_NSP_SHIFT) | nsi; + mp->mapped_nsp_nsi = (mapped_nsp<< NSH_NSP_SHIFT) | mapped_nsi; + mp->sw_if_index = sw_if_index; + mp->next_node = next_node; + + /* send it... */ + S; + + /* Wait for a reply... */ + W; + + +} + +static void vl_api_nsh_map_details_t_handler +(vl_api_nsh_map_details_t * mp) +{ + vat_main_t * vam = &vat_main; + + fformat(vam->ofp, "%14d%14d%14d%14d\n", + ntohl(mp->nsp_nsi), + ntohl(mp->mapped_nsp_nsi), + ntohl(mp->sw_if_index), + ntohl(mp->next_node)); +} + +static int api_nsh_map_dump (vat_main_t * vam) +{ + nsh_test_main_t * sm = &nsh_test_main; + vl_api_nsh_map_dump_t *mp; + f64 timeout; + + if (!vam->json_output) { + fformat(vam->ofp, "%16s%16s%13s%13s\n", + "nsp_nsi", "mapped_nsp_nsi", "sw_if_index", "next_node"); + } + + /* Get list of nsh entries */ + M(NSH_MAP_DUMP, nsh_map_dump); + + /* send it... */ + S; + + /* Wait for a reply... */ + W; +} + +/* + * List of messages that the api test plugin sends, + * and that the data plane plugin processes + */ +#define foreach_vpe_api_msg \ +_(nsh_add_del_entry, "{nsp <nn> nsi <nn>} c1 <nn> c2 <nn> c3 <nn> c4 <nn> [md-type <nn>] [tlv <xx>] [del]") \ +_(nsh_entry_dump, "") \ +_(nsh_add_del_map, "nsp <nn> nsi <nn> [del] mapped-nsp <nn> mapped-nsi <nn> [encap-gre-intf <nn> | encap-vxlan-gpe-intf <nn> | encap-none]") \ +_(nsh_map_dump, "") + +void vat_api_hookup (vat_main_t *vam) +{ + nsh_test_main_t * sm = &nsh_test_main; + /* Hook up handlers for replies from the data plane plug-in */ +#define _(N,n) \ + vl_msg_api_set_handlers((VL_API_##N + sm->msg_id_base), \ + #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_reply_msg; +#undef _ + + /* API messages we can send */ +#define _(n,h) hash_set_mem (vam->function_by_name, #n, api_##n); + foreach_vpe_api_msg; +#undef _ + + /* Help strings */ +#define _(n,h) hash_set_mem (vam->help_by_name, #n, h); + foreach_vpe_api_msg; +#undef _ +} + +clib_error_t * vat_plugin_register (vat_main_t *vam) +{ + nsh_test_main_t * sm = &nsh_test_main; + u8 * name; + + sm->vat_main = vam; + + /* Ask the vpp engine for the first assigned message-id */ + name = format (0, "nsh_%08x%c", api_version, 0); + sm->msg_id_base = vl_client_get_first_plugin_msg_id ((char *) name); + + if (sm->msg_id_base != (u16) ~0) + vat_api_hookup (vam); + + vec_free(name); + + return 0; +} |