vpp - Vector Packet Processing

Age	Commit message (Expand)	Author	Files	Lines
2016-09-21	Refactor pre-Doxy siphon scripts; VPP-396	Chris Luke	1	-0/+149

/* * Copyright (c) 2016 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include <vlib/vlib.h> #include <vnet/vnet.h> #include <vnet/pg/pg.h> #include <vppinfra/error.h> #include <vnet/ip/ip6.h> #include <vppinfra/hash.h> #include <vppinfra/error.h> #include <vppinfra/elog.h> #include <ioam/encap/ip6_ioam_pot.h> #include <ioam/lib-pot/pot_util.h> #define foreach_ip6_hop_by_hop_ioam_pot_stats \ _(PROCESSED, "Pkts with ip6 hop-by-hop pot options") \ _(PROFILE_MISS, "Pkts with ip6 hop-by-hop pot options but no profile set") \ _(PASSED, "Pkts with POT in Policy") \ _(FAILED, "Pkts with POT out of Policy") static char * ip6_hop_by_hop_ioam_pot_stats_strings[] = { #define _(sym,string) string, foreach_ip6_hop_by_hop_ioam_pot_stats #undef _ }; typedef enum { #define _(sym,str) IP6_IOAM_POT_##sym, foreach_ip6_hop_by_hop_ioam_pot_stats #undef _ IP6_IOAM_POT_N_STATS, } ip6_ioam_pot_stats_t; typedef struct { /* stats */ u64 counters[ARRAY_LEN(ip6_hop_by_hop_ioam_pot_stats_strings)]; /* convenience */ vlib_main_t * vlib_main; vnet_main_t * vnet_main; } ip6_hop_by_hop_ioam_pot_main_t; ip6_hop_by_hop_ioam_pot_main_t ip6_hop_by_hop_ioam_pot_main; always_inline void ip6_ioam_stats_increment_counter (u32 counter_index, u64 increment) { ip6_hop_by_hop_ioam_pot_main_t *hm = &ip6_hop_by_hop_ioam_pot_main; hm->counters[counter_index] += increment; } static u8 * format_ioam_pot (u8 * s, va_list * args) { ioam_pot_option_t * pot0 = va_arg (*args, ioam_pot_option_t *); u64 random, cumulative; random = cumulative = 0; if (pot0) { random = clib_net_to_host_u64 (pot0->random); cumulative = clib_net_to_host_u64 (pot0->cumulative); } s = format (s, "random = 0x%Lx, Cumulative = 0x%Lx, Index = 0x%x", random, cumulative, pot0 ? pot0->reserved_profile_id : ~0); return s; } u8 * ip6_hbh_ioam_proof_of_transit_trace_handler (u8 *s, ip6_hop_by_hop_option_t *opt) { ioam_pot_option_t *pot; s = format (s, " POT opt present\n"); pot = (ioam_pot_option_t *) opt; s = format (s, " %U\n", format_ioam_pot, pot); return (s); } int ip6_hbh_ioam_proof_of_transit_handler (vlib_buffer_t *b, ip6_header_t *ip, ip6_hop_by_hop_option_t *opt0) { ioam_pot_option_t * pot0; u64 random = 0, cumulative = 0; int rv = 0; u8 pot_profile_index; pot_profile *pot_profile = 0, *new_profile = 0; u8 pot_encap = 0; pot0 = (ioam_pot_option_t *) opt0; pot_encap = (pot0->random == 0); pot_profile_index = pot_profile_get_active_id(); pot_profile = pot_profile_get_active(); if (pot_encap && PREDICT_FALSE(!pot_profile)) { ip6_ioam_stats_increment_counter (IP6_IOAM_POT_PROFILE_MISS, 1); return(-1); } if (pot_encap) { pot0->reserved_profile_id = pot_profile_index & PROFILE_ID_MASK; pot_profile_incr_usage_stats(pot_profile); } else { /* Non encap node */ if (PREDICT_FALSE(pot0->reserved_profile_id != pot_profile_index || pot_profile == 0)) { /* New profile announced by encap node. */ new_profile = pot_profile_find(pot0->reserved_profile_id); if (PREDICT_FALSE(new_profile == 0 || new_profile->valid == 0)) { ip6_ioam_stats_increment_counter (IP6_IOAM_POT_PROFILE_MISS, 1); return(-1); } else { pot_profile_index = pot0->reserved_profile_id; pot_profile = new_profile; pot_profile_set_active(pot_profile_index); pot_profile_reset_usage_stats(pot_profile); } } pot_profile_incr_usage_stats(pot_profile); } if (pot0->random == 0) { pot0->random = clib_host_to_net_u64(pot_generate_random(pot_profile)); pot0->cumulative = 0; } random = clib_net_to_host_u64(pot0->random); cumulative = clib_net_to_host_u64(pot0->cumulative); pot0->cumulative = clib_host_to_net_u64( pot_update_cumulative(pot_profile, cumulative, random)); ip6_ioam_stats_increment_counter (IP6_IOAM_POT_PROCESSED, 1); return (rv); } int ip6_hbh_ioam_proof_of_transit_pop_handler (vlib_buffer_t *b, ip6_header_t *ip, ip6_hop_by_hop_option_t *opt0) { ioam_pot_option_t * pot0; u64 random = 0; u64 cumulative = 0; int rv = 0; pot_profile *pot_profile = 0; u8 result = 0; pot0 = (ioam_pot_option_t *) opt0; random = clib_net_to_host_u64(pot0->random); cumulative = clib_net_to_host_u64(pot0->cumulative); pot_profile = pot_profile_get_active(); result = pot_validate (pot_profile, cumulative, random); if (result == 1) { ip6_ioam_stats_increment_counter (IP6_IOAM_POT_PASSED, 1); } else { ip6_ioam_stats_increment_counter (IP6_IOAM_POT_FAILED, 1); } return (rv); } int ip6_hop_by_hop_ioam_pot_rewrite_handler (u8 *rewrite_string, u8 *rewrite_size) { ioam_pot_option_t * pot_option; if (rewrite_string && *rewrite_size == sizeof(ioam_pot_option_t)) { pot_option = (ioam_pot_option_t *)rewrite_string; pot_option->hdr.type = HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT | HBH_OPTION_TYPE_DATA_CHANGE_ENROUTE; pot_option->hdr.length = sizeof (ioam_pot_option_t) - sizeof (ip6_hop_by_hop_option_t); return(0); } return(-1); } static clib_error_t * ip6_show_ioam_pot_cmd_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { ip6_hop_by_hop_ioam_pot_main_t *hm = &ip6_hop_by_hop_ioam_pot_main; u8 *s = 0; int i = 0; for ( i = 0; i < IP6_IOAM_POT_N_STATS; i++) { s = format(s, " %s - %lu\n", ip6_hop_by_hop_ioam_pot_stats_strings[i], hm->counters[i]); } vlib_cli_output(vm, "%v", s); vec_free(s); return 0; } VLIB_CLI_COMMAND (ip6_show_ioam_pot_cmd, static) = { .path = "show ioam pot", .short_help = "iOAM pot statistics", .function = ip6_show_ioam_pot_cmd_fn, }; static clib_error_t * ip6_hop_by_hop_ioam_pot_init (vlib_main_t * vm) { ip6_hop_by_hop_ioam_pot_main_t * hm = &ip6_hop_by_hop_ioam_pot_main; clib_error_t * error; if ((error = vlib_call_init_function (vm, ip6_hop_by_hop_ioam_init))) return(error); hm->vlib_main = vm; hm->vnet_main = vnet_get_main(); clib_memset(hm->counters, 0, sizeof(hm->counters)); if (ip6_hbh_register_option(HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT, ip6_hbh_ioam_proof_of_transit_handler, ip6_hbh_ioam_proof_of_transit_trace_handler) < 0) return (clib_error_create("registration of HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT failed")); if (ip6_hbh_add_register_option(HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT, sizeof(ioam_pot_option_t), ip6_hop_by_hop_ioam_pot_rewrite_handler) < 0) return (clib_error_create("registration of HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT for rewrite failed")); if (ip6_hbh_pop_register_option(HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT, ip6_hbh_ioam_proof_of_transit_pop_handler) < 0) return (clib_error_create("registration of HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT POP failed")); return (0); } VLIB_INIT_FUNCTION (ip6_hop_by_hop_ioam_pot_init);