diff options
Diffstat (limited to 'vnet')
| -rw-r--r-- | vnet/Makefile.am | 10 | ||||
| -rw-r--r-- | vnet/vnet/ip/ip6_hop_by_hop.c | 278 | ||||
| -rw-r--r-- | vnet/vnet/ip/ip6_hop_by_hop.h | 24 | ||||
| -rw-r--r-- | vnet/vnet/ip/ip6_hop_by_hop_packet.h | 10 | ||||
| -rw-r--r-- | vnet/vnet/lib-scv/math64.h | 159 | ||||
| -rw-r--r-- | vnet/vnet/lib-scv/scv_util.c | 486 | ||||
| -rw-r--r-- | vnet/vnet/lib-scv/scv_util.h | 278 |
7 files changed, 125 insertions, 1120 deletions
diff --git a/vnet/Makefile.am b/vnet/Makefile.am index b758c7f1cc9..61a1998a6eb 100644 --- a/vnet/Makefile.am +++ b/vnet/Makefile.am @@ -717,16 +717,6 @@ libvnetplugin_la_SOURCES += \ nobase_include_HEADERS += \ vnet/plugin/plugin.h -######################################## -# Service Chain verification util -######################################## -libvnet_la_SOURCES += \ - vnet/lib-scv/scv_util.c - -nobase_include_HEADERS += \ - vnet/lib-scv/scv_util.h \ - vnet/lib-scv/math64.h - lib_LTLIBRARIES = libvnet.la libvnetplugin.la dpdk_libs = diff --git a/vnet/vnet/ip/ip6_hop_by_hop.c b/vnet/vnet/ip/ip6_hop_by_hop.c index df0dae5786a..f6e10f08d97 100644 --- a/vnet/vnet/ip/ip6_hop_by_hop.c +++ b/vnet/vnet/ip/ip6_hop_by_hop.c @@ -25,8 +25,6 @@ #include <vnet/ip/ip6_hop_by_hop.h> -#include <vnet/lib-scv/scv_util.h> - /* Timestamp precision multipliers for seconds, milliseconds, microseconds * and nanoseconds respectively. */ @@ -115,22 +113,6 @@ static u8 * format_ioam_data_list_element (u8 * s, va_list * args) return s; } -static u8 * format_ioam_pow (u8 * s, va_list * args) -{ - ioam_pow_option_t * pow0 = va_arg (*args, ioam_pow_option_t *); - u64 random, cumulative; - random = cumulative = 0; - if (pow0) - { - random = clib_net_to_host_u64 (pow0->random); - cumulative = clib_net_to_host_u64 (pow0->cumulative); - } - - s = format (s, "random = 0x%Lx, Cumulative = 0x%Lx, Index = 0x%x", - random, cumulative, pow0->reserved_profile_id); - return s; -} - u8 * ip6_hbh_ioam_trace_data_list_trace_handler (u8 *s, ip6_hop_by_hop_option_t *opt) { @@ -158,17 +140,6 @@ ip6_hbh_ioam_trace_data_list_trace_handler (u8 *s, ip6_hop_by_hop_option_t *opt) return (s); } -u8 * -ip6_hbh_ioam_proof_of_work_trace_handler (u8 *s, ip6_hop_by_hop_option_t *opt) -{ - ioam_pow_option_t *pow; - - s = format (s, " POW opt present\n"); - pow = (ioam_pow_option_t *) opt; - s = format (s, " %U\n", format_ioam_pow, pow); - return (s); -} - int ip6_hbh_ioam_trace_data_list_handler (vlib_buffer_t *b, ip6_header_t *ip, ip6_hop_by_hop_option_t *opt) { @@ -221,76 +192,42 @@ ip6_hbh_ioam_trace_data_list_handler (vlib_buffer_t *b, ip6_header_t *ip, ip6_ho return (rv); } +/* The main h-b-h tracer will be invoked, no need to do much here */ int -ip6_hbh_ioam_proof_of_work_handler (vlib_buffer_t *b, ip6_header_t *ip, ip6_hop_by_hop_option_t *opt) +ip6_hbh_add_register_option (u8 option, + u8 size, + int rewrite_options(u8 *rewrite_string, u8 rewrite_size)) { ip6_hop_by_hop_ioam_main_t * hm = &ip6_hop_by_hop_ioam_main; - ioam_pow_option_t * pow; - u64 random = 0, cumulative = 0; - int rv = 0; - pow_profile = scv_profile_find(pow_profile_index); - if (PREDICT_FALSE(!pow_profile)) { + ASSERT (option < ARRAY_LEN (hm->add_options)); + + /* Already registered */ + if (hm->add_options[option]) return (-1); - } - pow = (ioam_pow_option_t *) opt; - - u8 pow_encap = (pow->random == 0); - if (pow_encap) { - if (PREDICT_FALSE(total_pkts_using_this_profile >= pow_profile->validity)) { - /* Choose a new profile */ - u16 new_profile_index; - new_profile_index = scv_get_next_profile_id(hm->vlib_main, pow_profile_index); - if (new_profile_index != pow_profile_index) { - /* Got a new profile */ - scv_profile_invalidate(hm->vlib_main, hm, - pow_profile_index, - pow_encap); - pow_profile_index = new_profile_index; - pow_profile = scv_profile_find(pow_profile_index); - total_pkts_using_this_profile = 0; - } else { - scv_profile_invalidate(hm->vlib_main, hm, pow_profile_index, pow_encap); - } - } - pow->reserved_profile_id = pow_profile_index & PROFILE_ID_MASK; - total_pkts_using_this_profile++; - } else { /* Non encap node */ - if (PREDICT_FALSE(pow->reserved_profile_id != pow_profile_index)) { - /* New profile announced by encap node. */ - scv_profile *new_profile = 0; - new_profile = scv_profile_find(pow->reserved_profile_id); - if (PREDICT_FALSE(new_profile == 0 || new_profile->validity == 0)) { - /* Profile is invalid. Use old profile*/ - rv = -1; - scv_profile_invalidate(hm->vlib_main, hm, - pow->reserved_profile_id, - pow_encap); - } else { - scv_profile_invalidate(hm->vlib_main, hm, - pow_profile_index, - pow_encap); - pow_profile_index = pow->reserved_profile_id; - pow_profile = new_profile; - total_pkts_using_this_profile = 0; - } - } - total_pkts_using_this_profile++; - } + hm->add_options[option] = rewrite_options; + hm->options_size[option] = size; + + return (0); +} - if (pow->random == 0) { - pow->random = clib_host_to_net_u64(scv_generate_random(pow_profile)); - pow->cumulative = 0; - } - random = clib_net_to_host_u64(pow->random); - cumulative = clib_net_to_host_u64(pow->cumulative); - pow->cumulative = clib_host_to_net_u64(scv_update_cumulative(pow_profile, cumulative, random)); +int +ip6_hbh_add_unregister_option (u8 option) +{ + ip6_hop_by_hop_ioam_main_t * hm = &ip6_hop_by_hop_ioam_main; - return (rv); + ASSERT (option < ARRAY_LEN (hm->add_options)); + + /* Not registered */ + if (!hm->add_options[option]) + return (-1); + + hm->add_options[option] = NULL; + hm->options_size[option] = 0; + return (0); } -/* The main h-b-h tracer will be invoked, no need to do much here */ typedef struct { u32 next_index; } ip6_add_hop_by_hop_trace_t; @@ -530,13 +467,44 @@ static u8 * format_ip6_pop_hop_by_hop_trace (u8 * s, va_list * args) return s; } +int +ip6_hbh_pop_register_option (u8 option, + int options(ip6_header_t *ip, ip6_hop_by_hop_option_t *opt)) +{ + ip6_hop_by_hop_ioam_main_t * hm = &ip6_hop_by_hop_ioam_main; + + ASSERT (option < ARRAY_LEN (hm->pop_options)); + + /* Already registered */ + if (hm->pop_options[option]) + return (-1); + + hm->pop_options[option] = options; + + return (0); +} + +int +ip6_hbh_pop_unregister_option (u8 option) +{ + ip6_hop_by_hop_ioam_main_t * hm = &ip6_hop_by_hop_ioam_main; + + ASSERT (option < ARRAY_LEN (hm->pop_options)); + + /* Not registered */ + if (!hm->pop_options[option]) + return (-1); + + hm->pop_options[option] = NULL; + return (0); +} + vlib_node_registration_t ip6_pop_hop_by_hop_node; #define foreach_ip6_pop_hop_by_hop_error \ _(PROCESSED, "Pkts w/ removed ip6 hop-by-hop options") \ -_(NO_HOHO, "Pkts w/ no ip6 hop-by-hop options") \ -_(SCV_PASSED, "Pkts with SCV in Policy") \ -_(SCV_FAILED, "Pkts with SCV out of Policy") +_(NO_HOHO, "Pkts w/ no ip6 hop-by-hop options") \ +_(OPTION_FAILED, "ip6 pop hop-by-hop failed to process") typedef enum { #define _(sym,str) IP6_POP_HOP_BY_HOP_ERROR_##sym, @@ -551,16 +519,13 @@ static char * ip6_pop_hop_by_hop_error_strings[] = { #undef _ }; -static inline void ioam_end_of_path_validation (vlib_main_t * vm, +static inline void ioam_pop_hop_by_hop_processing (vlib_main_t * vm, ip6_header_t *ip0, ip6_hop_by_hop_header_t *hbh0) { + ip6_hop_by_hop_ioam_main_t * hm = &ip6_hop_by_hop_ioam_main; ip6_hop_by_hop_option_t *opt0, *limit0; - ioam_pow_option_t * pow0; u8 type0; - u64 final_cumulative = 0; - u64 random = 0; - u8 result = 0; if (!hbh0 || !ip0) return; @@ -573,64 +538,37 @@ static inline void ioam_end_of_path_validation (vlib_main_t * vm, { type0 = opt0->type; switch (type0) - { - case HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE: - case HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST: - opt0 = (ip6_hop_by_hop_option_t *) - (((u8 *)opt0) + opt0->length - + sizeof (ip6_hop_by_hop_option_t)); - break; - case HBH_OPTION_TYPE_IOAM_PROOF_OF_WORK: - pow0 = (ioam_pow_option_t *) opt0; - random = clib_net_to_host_u64(pow0->random); - final_cumulative = clib_net_to_host_u64(pow0->cumulative); - result = scv_validate (pow_profile, - final_cumulative, random); - - if (result == 1) - { - vlib_node_increment_counter (vm, ip6_pop_hop_by_hop_node.index, - IP6_POP_HOP_BY_HOP_ERROR_SCV_PASSED, result); - } - else - { - vlib_node_increment_counter (vm, ip6_pop_hop_by_hop_node.index, - IP6_POP_HOP_BY_HOP_ERROR_SCV_FAILED, 1); - } - /* TODO: notify the scv failure*/ - opt0 = (ip6_hop_by_hop_option_t *) - (((u8 *)opt0) + sizeof (ioam_pow_option_t)); - break; - - case 0: /* Pad */ - opt0 = (ip6_hop_by_hop_option_t *) ((u8 *)opt0) + 1; - break; - - default: - format(0, "Something is wrong\n"); - break; - } + { + case 0: /* Pad1 */ + opt0 = (ip6_hop_by_hop_option_t *) ((u8 *)opt0) + 1; + continue; + case 1: /* PadN */ + break; + default: + if (hm->pop_options[type0]) + { + if ((*hm->pop_options[type0])(ip0, opt0) < 0) + { + vlib_node_increment_counter (vm, ip6_pop_hop_by_hop_node.index, + IP6_POP_HOP_BY_HOP_ERROR_OPTION_FAILED, 1); + } + } + } + opt0 = (ip6_hop_by_hop_option_t *) (((u8 *)opt0) + opt0->length + sizeof (ip6_hop_by_hop_option_t)); } } - static uword ip6_pop_hop_by_hop_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { - ip6_hop_by_hop_ioam_main_t * hm = &ip6_hop_by_hop_ioam_main; ip6_main_t * im = &ip6_main; ip_lookup_main_t * lm = &im->lookup_main; u32 n_left_from, * from, * to_next; ip_lookup_next_t next_index; u32 processed = 0; u32 no_header = 0; - u32 (*ioam_end_of_path_cb) (vlib_main_t *, vlib_node_runtime_t *, - vlib_buffer_t *, ip6_header_t *, - ip_adjacency_t *); - - ioam_end_of_path_cb = hm->ioam_end_of_path_cb; from = vlib_frame_vector_args (frame); n_left_from = frame->n_vectors; @@ -748,11 +686,8 @@ ip6_pop_hop_by_hop_node_fn (vlib_main_t * vm, /* Perfectly normal to end up here w/ out h-b-h header */ hbh0 = (ip6_hop_by_hop_header_t *)(ip0+1); - /* Collect data from trace via callback */ - next0 = ioam_end_of_path_cb ? ioam_end_of_path_cb (vm, node, b0, ip0, adj0) : next0; - /* TODO:Temporarily doing it here.. do this validation in end_of_path_cb */ - ioam_end_of_path_validation(vm, ip0, hbh0); + ioam_pop_hop_by_hop_processing(vm, ip0, hbh0); /* Pop the trace data */ vlib_buffer_advance (b0, (hbh0->length+1)<<3); new_l0 = clib_net_to_host_u16 (ip0->payload_length) - @@ -820,6 +755,9 @@ ip6_hop_by_hop_ioam_init (vlib_main_t * vm) hm->vlib_time_0 = vlib_time_now (vm); hm->ioam_flag = IOAM_HBYH_MOD; hm->trace_tsp = TSP_MICROSECONDS; /* Micro seconds */ + memset(hm->add_options, 0, sizeof(hm->add_options)); + memset(hm->pop_options, 0, sizeof(hm->pop_options)); + memset(hm->options_size, 0, sizeof(hm->options_size)); /* * Register the handlers @@ -828,9 +766,6 @@ ip6_hop_by_hop_ioam_init (vlib_main_t * vm) if (ip6_hbh_register_option(HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST, ip6_hbh_ioam_trace_data_list_handler, ip6_hbh_ioam_trace_data_list_trace_handler) < 0) return (clib_error_create("registration of HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST failed")); - if (ip6_hbh_register_option(HBH_OPTION_TYPE_IOAM_PROOF_OF_WORK, ip6_hbh_ioam_proof_of_work_handler, - ip6_hbh_ioam_proof_of_work_trace_handler) < 0) - return (clib_error_create("registration of HBH_OPTION_TYPE_IOAM_PROOF_OF_WORK failed")); return (0); } @@ -838,19 +773,19 @@ ip6_hop_by_hop_ioam_init (vlib_main_t * vm) VLIB_INIT_FUNCTION (ip6_hop_by_hop_ioam_init); int ip6_ioam_set_rewrite (u8 **rwp, u32 trace_type, u32 trace_option_elts, - int has_pow_option, int has_ppc_option) + int has_pot_option, int has_ppc_option) { + ip6_hop_by_hop_ioam_main_t * hm = &ip6_hop_by_hop_ioam_main; u8 *rewrite = 0; u32 size, rnd_size; ip6_hop_by_hop_header_t *hbh; ioam_trace_option_t * trace_option; - ioam_pow_option_t * pow_option; u8 *current; u8 trace_data_size = 0; vec_free (*rwp); - if (trace_option_elts == 0 && has_pow_option == 0) + if (trace_option_elts == 0 && has_pot_option == 0) return -1; /* Work out how much space we need */ @@ -869,10 +804,10 @@ int ip6_ioam_set_rewrite (u8 **rwp, u32 trace_type, u32 trace_option_elts, size += trace_option_elts * trace_data_size; } - if (has_pow_option) + if (has_pot_option && hm->add_options[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT] != 0) { size += sizeof (ip6_hop_by_hop_option_t); - size += sizeof (ioam_pow_option_t); + size += hm->options_size[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT]; } /* Round to a multiple of 8 octets */ @@ -899,14 +834,11 @@ int ip6_ioam_set_rewrite (u8 **rwp, u32 trace_type, u32 trace_option_elts, current += sizeof (ioam_trace_option_t) + trace_option_elts * trace_data_size; } - if (has_pow_option) + if (has_pot_option && hm->add_options[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT] != 0) { - pow_option = (ioam_pow_option_t *)current; - pow_option->hdr.type = HBH_OPTION_TYPE_IOAM_PROOF_OF_WORK - | HBH_OPTION_TYPE_DATA_CHANGE_ENROUTE; - pow_option->hdr.length = sizeof (ioam_pow_option_t) - - sizeof (ip6_hop_by_hop_option_t); - current += sizeof (ioam_pow_option_t); + if (0 == hm->add_options[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT](current, + hm->options_size[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT])) + current += sizeof (hm->options_size[HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT]); } *rwp = rewrite; @@ -924,7 +856,7 @@ clear_ioam_rewrite_fn(void) hm->app_data = 0; hm->trace_type = 0; hm->trace_option_elts = 0; - hm->has_pow_option = 0; + hm->has_pot_option = 0; hm->has_ppc_option = 0; hm->trace_tsp = TSP_MICROSECONDS; @@ -946,13 +878,13 @@ VLIB_CLI_COMMAND (ip6_clear_ioam_trace_cmd, static) = { clib_error_t * ip6_ioam_trace_profile_set(u32 trace_option_elts, u32 trace_type, u32 node_id, - u32 app_data, int has_pow_option, u32 trace_tsp, + u32 app_data, int has_pot_option, u32 trace_tsp, int has_ppc_option) { int rv; ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main; rv = ip6_ioam_set_rewrite (&hm->rewrite, trace_type, trace_option_elts, - has_pow_option, has_ppc_option); + has_pot_option, has_ppc_option); switch (rv) { @@ -961,7 +893,7 @@ ip6_ioam_trace_profile_set(u32 trace_option_elts, u32 trace_type, u32 node_id, hm->app_data = app_data; hm->trace_type = trace_type; hm->trace_option_elts = trace_option_elts; - hm->has_pow_option = has_pow_option; + hm->has_pot_option = has_pot_option; hm->has_ppc_option = has_ppc_option; hm->trace_tsp = trace_tsp; break; @@ -982,7 +914,7 @@ ip6_set_ioam_rewrite_command_fn (vlib_main_t * vm, u32 trace_option_elts = 0; u32 trace_type = 0, node_id = 0; u32 app_data = 0, trace_tsp = TSP_MICROSECONDS; - int has_pow_option = 0; + int has_pot_option = 0; int has_ppc_option = 0; clib_error_t * rv = 0; @@ -993,8 +925,8 @@ ip6_set_ioam_rewrite_command_fn (vlib_main_t * vm, &trace_type, &trace_option_elts, &trace_tsp, &node_id, &app_data)) ; - else if (unformat (input, "pow")) - has_pow_option = 1; + else if (unformat (input, "pot")) + has_pot_option = 1; else if (unformat (input, "ppc encap")) has_ppc_option = PPC_ENCAP; else if (unformat (input, "ppc decap")) @@ -1007,7 +939,7 @@ ip6_set_ioam_rewrite_command_fn (vlib_main_t * vm, rv = ip6_ioam_trace_profile_set(trace_option_elts, trace_type, node_id, - app_data, has_pow_option, trace_tsp, has_ppc_option); + app_data, has_pot_option, trace_tsp, has_ppc_option); return rv; } @@ -1015,7 +947,7 @@ ip6_set_ioam_rewrite_command_fn (vlib_main_t * vm, VLIB_CLI_COMMAND (ip6_set_ioam_rewrite_cmd, static) = { .path = "set ioam rewrite", - .short_help = "set ioam rewrite trace-type <0x1f|0x3|0x9|0x11|0x19> trace-elts <nn> trace-tsp <0|1|2|3> node-id <node id in hex> app-data <app_data in hex> [pow] [ppc <encap|decap>]", + .short_help = "set ioam rewrite trace-type <0x1f|0x3|0x9|0x11|0x19> trace-elts <nn> trace-tsp <0|1|2|3> node-id <node id in hex> app-data <app_data in hex> [pot] [ppc <encap|decap>]", .function = ip6_set_ioam_rewrite_command_fn, }; @@ -1063,10 +995,10 @@ ip6_show_ioam_summary_cmd_fn (vlib_main_t * vm, s = format(s, " HOP BY HOP OPTIONS - TRACE CONFIG - Not configured\n"); } - s = format(s, " POW OPTION - %d (%s)\n", - hm->has_pow_option, (hm->has_pow_option?"Enabled":"Disabled")); - if (hm->has_pow_option) - s = format(s, "Try 'show ioam sc-profile' for more information\n"); + s = format(s, " POT OPTION - %d (%s)\n", + hm->has_pot_option, (hm->has_pot_option?"Enabled":"Disabled")); + if (hm->has_pot_option) + s = format(s, "Try 'show ioam pot and show pot profile' for more information\n"); s = format(s, " EDGE TO EDGE - PPC OPTION - %d (%s)\n", hm->has_ppc_option, ppc_state[hm->has_ppc_option]); diff --git a/vnet/vnet/ip/ip6_hop_by_hop.h b/vnet/vnet/ip/ip6_hop_by_hop.h index 50a14a9b6a8..0ee24b306a1 100644 --- a/vnet/vnet/ip/ip6_hop_by_hop.h +++ b/vnet/vnet/ip/ip6_hop_by_hop.h @@ -45,8 +45,8 @@ typedef struct { u32 node_id; u32 app_data; - /* PoW option */ - u8 has_pow_option; + /* Pot option */ + u8 has_pot_option; #define PPC_NONE 0 #define PPC_ENCAP 1 @@ -59,7 +59,12 @@ typedef struct { #define TSP_NANOSECONDS 3 /* Time stamp precision. This is enumerated to above four options */ u32 trace_tsp; - + + /* Array of function pointers to ADD and POP HBH option handling routines */ + u8 options_size[256]; + int (*add_options[256])(u8 *rewrite_string, u8 rewrite_size); + int (*pop_options[256])(ip6_header_t *ip, ip6_hop_by_hop_option_t *opt); + /* convenience */ vlib_main_t * vlib_main; vnet_main_t * vnet_main; @@ -70,7 +75,7 @@ extern ip6_hop_by_hop_ioam_main_t ip6_hop_by_hop_ioam_main; extern u8 * format_path_map(u8 * s, va_list * args); extern clib_error_t * ip6_ioam_trace_profile_set(u32 trace_option_elts, u32 trace_type, u32 node_id, - u32 app_data, int has_pow_option, u32 trace_tsp, + u32 app_data, int has_pot_option, u32 trace_tsp, int has_e2e_option); extern int ip6_ioam_set_destination (ip6_address_t *addr, u32 mask_width, u32 vrf_id, int is_add, int is_pop, int is_none); @@ -103,5 +108,14 @@ static inline u8 is_zero_ip6_address (ip6_address_t *a) return ((a->as_u64[0] == 0) && (a->as_u64[1] == 0)); } -extern ip6_hop_by_hop_ioam_main_t * hm; +int ip6_hbh_add_register_option (u8 option, + u8 size, + int rewrite_options(u8 *rewrite_string, u8 size)); +int ip6_hbh_add_unregister_option (u8 option); + +int ip6_hbh_pop_register_option (u8 option, + int options(ip6_header_t *ip, ip6_hop_by_hop_option_t *opt)); +int ip6_hbh_pop_unregister_option (u8 option); + + #endif /* __included_ip6_hop_by_hop_ioam_h__ */ diff --git a/vnet/vnet/ip/ip6_hop_by_hop_packet.h b/vnet/vnet/ip/ip6_hop_by_hop_packet.h index 708275af2d8..0a2c3d02ac1 100644 --- a/vnet/vnet/ip/ip6_hop_by_hop_packet.h +++ b/vnet/vnet/ip/ip6_hop_by_hop_packet.h @@ -40,7 +40,7 @@ typedef struct { /* $$$$ IANA banana constants */ #define HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST 59 /* Third highest bit set (change en-route) */ -#define HBH_OPTION_TYPE_IOAM_PROOF_OF_WORK 60 /* Third highest bit set (change en-route) */ +#define HBH_OPTION_TYPE_IOAM_PROOF_OF_TRANSIT 60 /* Third highest bit set (change en-route) */ #define HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE 29 /* @@ -171,14 +171,6 @@ typedef CLIB_PACKED(struct { u32 elts[0]; /* Variable type. So keep it generic */ }) ioam_trace_option_t; -typedef CLIB_PACKED(struct { - ip6_hop_by_hop_option_t hdr; - u8 pow_type; -#define PROFILE_ID_MASK 0xF - u8 reserved_profile_id; /* 4 bits reserved, 4 bits to carry profile id */ - u64 random; - u64 cumulative; -}) ioam_pow_option_t; typedef CLIB_PACKED(struct { ip6_hop_by_hop_option_t hdr; diff --git a/vnet/vnet/lib-scv/math64.h b/vnet/vnet/lib-scv/math64.h deleted file mode 100644 index 9ee6e438f90..00000000000 --- a/vnet/vnet/lib-scv/math64.h +++ /dev/null @@ -1,159 +0,0 @@ -/* - * math64.h provides the 64 bit unsigned integer add, multiply followed by modulo operation - * The linux/math64.h provides divide and multiply 64 bit integers but: - * 1. multiply: mul_u64_u64_shr - only returns 64 bits of the result and has to be called - * twice to get the complete 128 bits of the result. - * 2. Modulo operation of the result of addition and multiplication of u64 that may result - * in integers > 64 bits is not supported - * Hence this header to combine add/multiply followed by modulo of u64 integrers - * always resulting in u64. - * - * 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 include_vnet_math64_h -#define include_vnet_math64_h -#include <stdint.h> - -/* - * multiplies and returns result in hi and lo - */ -static inline void mul64by64(u64 a, u64 b, u64 * hi, u64 * lo) -{ - u64 a_lo = (u64) (uint32_t) a; - u64 a_hi = a >> 32; - u64 b_lo = (u64) (u32) b; - u64 b_hi = b >> 32; - - u64 p0 = a_lo * b_lo; - u64 p1 = a_lo * b_hi; - u64 p2 = a_hi * b_lo; - u64 p3 = a_hi * b_hi; - - u32 cy = (u32) (((p0 >> 32) + (u32) p1 + (u32) p2) >> 32); - - *lo = p0 + (p1 << 32) + (p2 << 32); - *hi = p3 + (p1 >> 32) + (p2 >> 32) + cy; - return; -} - -#define TWO64 18446744073709551616.0 - -static inline u64 mod128by64(u64 x, u64 y, u64 m, double di) -{ - u64 q1, q2, q; - u64 p1, p0; - double dq; - - /* calculate quotient first pass 53 bits */ - dq = (TWO64 * (double)x + (double)y) * di; - - if (dq >= TWO64) - q1 = 0xfffffffffffff800L; - else - q1 = dq; - - /* q1 * m to compare the product to the dividend. */ - mul64by64(q1, m, &p1, &p0); - - /* Adjust quotient. is it > actual result: */ - if (x < p1 || (x == p1 && y < p0)) - { - /* q1 > quotient. calculate abs remainder */ - x = p1 - (x + (p0 < y)); - y = p0 - y; - - /* use the remainder as new dividend to adjust quotient */ - q2 = (u64) ((TWO64 * (double)x + (double)y) * di); - mul64by64(q2, m, &p1, &p0); - - q = q1 - q2; - if (x < p1 || (x == p1 && y <= p0)) - { - y = p0 - y; - } - else - { - y = p0 - y; - y += m; - q--; - } - } - else - { - x = x - (p1 + (y < p0)); - y = y - p0; - - q2 = (u64) ((TWO64 * (double)x + (double)y) * di); - mul64by64(q2, m, &p1, &p0); - - q = q1 + q2; - if (x < p1 || (x == p1 && y < p0)) - { - y = y - p0; - y += m; - q--; - } - else - { - y = y - p0; - if (y >= m) - { - y -= m; - q++; - } - } - } - - return y; -} - -/* - * returns a % p - */ -static inline u64 mod64by64(u64 a, u64 p, u64 primeinv) -{ - return (mod128by64(0, a, p, primeinv)); -} - -static inline void add64(u64 a, u64 b, u64 * whi, u64 * wlo) -{ - *wlo = a + b; - if (*wlo < a) - *whi = 1; - -} - -/* - * returns (a + b)%p - */ -static inline u64 add64_mod(u64 a, u64 b, u64 p, double pi) -{ - u64 shi = 0, slo = 0; - - add64(a, b, &shi, &slo); - return (mod128by64(shi, slo, p, pi)); -} - -/* - * returns (ab) % p - */ -static inline u64 mul64_mod(u64 a, u64 b, u64 p, double pi) -{ - u64 phi = 0, plo = 0; - - mul64by64(a, b, &phi, &plo); - return (mod128by64(phi, plo, p, pi)); -} - -#endif diff --git a/vnet/vnet/lib-scv/scv_util.c b/vnet/vnet/lib-scv/scv_util.c deleted file mode 100644 index e69c8837815..00000000000 --- a/vnet/vnet/lib-scv/scv_util.c +++ /dev/null @@ -1,486 +0,0 @@ -/* - * 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. - */ -#include <vnet/vnet.h> -#include <stdint.h> -#include <time.h> -#include <string.h> -#include <vppinfra/mem.h> -#include "math64.h" -#include "scv_util.h" - -scv_profile *pow_profile = NULL; -u16 pow_profile_index = 0; -u64 total_pkts_using_this_profile = 0; -u8 chain_path_name[PATH_NAME_SIZE]; -scv_profile profile_list[MAX_SERVICE_PROFILES]; -u8 max_profiles = 0; -u16 invalid_profile_start_index = 0; -u8 number_of_invalid_profiles = 0; -f64 next_time_to_send = 0; -u32 time_exponent = 1; -vlib_main_t *gvm = 0; - -static void scv_profile_init(scv_profile * new, u16 id) -{ - if (new) - { - memset(new, 0, sizeof(scv_profile)); - new->id = id; - } -} - -/* - * Get maximum number of profiles configured for this chain. - */ -u8 scv_get_max_profiles(void) -{ - return max_profiles; -} - -scv_profile *scv_profile_find(u16 id) -{ - u8 max = scv_get_max_profiles(); - - if (id >= 0 && id < max) - { - return (&profile_list[id]); - } - return (NULL); -} - -u8 sc_init_done = 0; -void scv_init(u8 * path_name, u8 max, u8 indx) -{ - int i = 0; - - if (sc_init_done) - { - return; - } - memcpy(chain_path_name, path_name, strlen((const char *)path_name) + 1); - max_profiles = max; - pow_profile_index = indx; - - for (i = 0; i < max_profiles; i++) - { - scv_profile_init(&profile_list[i], i); - } - - sc_init_done = 1; -} - -void scv_profile_cleanup(scv_profile * profile) -{ - u16 id = profile->id; - - memset(profile, 0, sizeof(scv_profile)); - profile->id = id; /* Restore id alone */ -} - -void scv_profile_create(scv_profile * profile, u64 prime, - u64 poly2, u64 lpc, u64 secret_share, u64 validity) -{ - if (profile) - { - scv_profile_cleanup(profile); - profile->prime = prime; - profile->primeinv = 1.0 / prime; - profile->lpc = lpc; - profile->poly_pre_eval = poly2; - profile->secret_share = secret_share; - profile->validity = validity; - time_exponent = 1; /* Got a new profile. Reset backoff */ - next_time_to_send = 0; /* and send next request with no delay */ - } -} - -void scv_set_validator(scv_profile * profile, u64 key) -{ - if (profile) - { - profile->validator = 1; - profile->secret_key = key; - } -} - -static inline u64 sc_update_cumulative(u64 cumulative, u64 random, - u64 secret_share, u64 prime, u64 lpc, u64 pre_split, double prime_inv) -{ - u64 share_random = 0; - u64 cumulative_new = 0; - - /* - * calculate split share for random - */ - share_random = add64_mod(pre_split, random, prime, prime_inv); - - /* - * lpc * (share_secret + share_random) - */ - share_random = add64_mod(share_random, secret_share, prime, prime_inv); - share_random = mul64_mod(share_random, lpc, prime, prime_inv); - - cumulative_new = add64_mod(cumulative, share_random, prime, prime_inv); - - return (cumulative_new); -} - -u64 scv_update_cumulative(scv_profile * profile, u64 cumulative, u64 random) -{ - if (profile && profile->validity != 0) - { - return (sc_update_cumulative(cumulative, random, profile->secret_share, - profile->prime, profile->lpc, profile->poly_pre_eval, - profile->primeinv)); - } - return (0); -} - -static u8 sc_validate(u64 secret, u64 prime, double prime_inv, - u64 cumulative, u64 random) -{ - if (cumulative == (random + secret)) - { - return (1); - } - else if (cumulative == add64_mod(random, secret, prime, prime_inv)) - { - return (1); - } - return (0); -} - -/* - * return True if the cumulative matches secret from a profile - */ -u8 scv_validate(scv_profile * profile, u64 cumulative, u64 random) -{ - if (profile && profile->validator) - { - return (sc_validate(profile->secret_key, profile->prime, - profile->primeinv, cumulative, random)); - } - return (0); -} - -/* - * Utility function to get random number per pack - */ -u64 scv_generate_random(scv_profile * profile) -{ - u64 random = 0; - int32_t second_half; - static u32 seed = 0; - - if (PREDICT_FALSE(!seed)) - seed = random_default_seed(); - - /* - * Upper 4 bytes seconds - */ - random = (u64) time(NULL); - - random &= 0xffffffff; - random = random << 32; - /* - * Lower 4 bytes random number - */ - second_half = random_u32(&seed); - - random |= second_half; - - if (PREDICT_TRUE(profile != NULL)) - { - random &= profile->bit_mask; - } - return (random); -} - -void scv_profile_set_bit_mask(scv_profile * profile, u16 bits) -{ - int sizeInBits; - - if (profile) - { - sizeInBits = sizeof(profile->bit_mask) * 8; - profile->bit_mask = - (bits >= - sizeInBits ? (u64) - 1 : (u64) ((u64) 1 << (u64) bits) - 1); - } -} - -/* - * TODO: Use vector buffers and hash tables - */ -#define MAX_SERVICES 16 - -clib_error_t *clear_scv_profile_command_fn(vlib_main_t * vm, - unformat_input_t * input, vlib_cli_command_t * cmd) -{ - int i = 0; - - if (!sc_init_done) - return 0; - - for (i = 0; i < max_profiles; i++) - { - scv_profile_cleanup(&profile_list[i]); - } - pow_profile = NULL; - pow_profile_index = 0; - total_pkts_using_this_profile = 0; - memset(chain_path_name, 0, PATH_NAME_SIZE); - max_profiles = 0; - invalid_profile_start_index = 0; - number_of_invalid_profiles = 0; - next_time_to_send = 0; - time_exponent = 1; - sc_init_done = 0; - - return 0; -} - -void clear_scv_profiles() -{ - clear_scv_profile_command_fn(0, 0, 0); -} - -VLIB_CLI_COMMAND(clear_scv_profile_command) = -{ -.path = "clear scv profile", -.short_help = "clear scv profile [<index>|all]", -.function = clear_scv_profile_command_fn, -}; - -static clib_error_t *set_scv_profile_command_fn(vlib_main_t * vm, - unformat_input_t * input, vlib_cli_command_t * cmd) -{ - u64 prime; - u64 secret_share, validity; - u64 secret_key; - u8 validator = 0; - u16 profile_id; - u32 bits; - u64 lpc = 0, poly2 = 0; - scv_profile *profile = NULL; - - bits = MAX_BITS; - - while (unformat_check_input(input) != UNFORMAT_END_OF_INPUT) - { - if (unformat(input, "id %d", &profile_id)) - ; - else if (unformat(input, "validate-key 0x%Lx", &secret_key)) - validator = 1; - else if (unformat(input, "prime-number 0x%Lx", &prime)) - ; - else if (unformat(input, "secret_share 0x%Lx", &secret_share)) - ; - else if (unformat(input, "polynomial2 0x%Lx", &poly2)) - ; - else if (unformat(input, "lpc 0x%Lx", &lpc)) - ; - else if (unformat(input, "validity 0x%Lx", &validity)) - ; - else if (unformat(input, "bits-in-random %d", &bits)) - { - if (bits > MAX_BITS) - bits = MAX_BITS; - } - else - return clib_error_return(0, "unknown input `%U'", - format_unformat_error, input); - } - - scv_init((u8 *) "TEST", MAX_SERVICE_PROFILES, 0 /* start index */ ); - profile = scv_profile_find(profile_id); - - if (profile) - { - scv_profile_create(profile, prime, poly2, lpc, secret_share, validity); - if (validator) - scv_set_validator(profile, secret_key); - scv_profile_set_bit_mask(profile, bits); - } - - return 0; -} - -VLIB_CLI_COMMAND(set_scv_profile_command) = -{ -.path = "set scv profile", -.short_help = "set scv profile id [0-16] [validator-key 0xu64] \ - prime-number 0xu64 secret_share 0xu64 lpc 0xu64 \ - polynomial2 0xu64 bits-in-random [0-64] ", -.function = set_scv_profile_command_fn, -}; - -static clib_error_t *show_scv_profile_command_fn(vlib_main_t * vm, - unformat_input_t * input, vlib_cli_command_t * cmd) -{ - scv_profile *p = NULL; - u16 i; - u8 *s = 0; - - if (sc_init_done == 0) - { - s = format(s, "SCV Profiles not configured\n"); - vlib_cli_output(vm, "%v", s); - return 0; - } - - for (i = 0; i < max_profiles; i++) - { - p = scv_profile_find(i); - if (p->validity == 0) - continue; - s = format(s, "SCV Profile at index: %d\n", i); - s = format(s, " Id : %d\n", p->id); - s = format(s, " Validator : %s (%d)\n", - (p->validator) ? "True" : "False", p->validator); - if (p->validator == 1) - s = format(s, " Secret key : 0x%Lx (%Ld)\n", - p->secret_key, p->secret_key); - s = format(s, " Secret share : 0x%Lx (%Ld)\n", - p->secret_share, p->secret_share); - s = format(s, " Prime number : 0x%Lx (%Ld)\n", - p->prime, p->prime); - s = format(s, "2nd polynomial(eval) : 0x%Lx (%Ld)\n", - p->poly_pre_eval, p->poly_pre_eval); - s = format(s, " LPC : 0x%Lx (%Ld)\n", p->lpc, p->lpc); - - s = format(s, " Bit mask : 0x%Lx (%Ld)\n", - p->bit_mask, p->bit_mask); - s = format(s, " Validity : 0x%Lx (%Ld)\n", - p->validity, p->validity); - } - - if (max_profiles) - { - p = scv_profile_find(pow_profile_index); - - s = format(s, "\nInvalid profiles start : %d Number : %d\n", - invalid_profile_start_index, number_of_invalid_profiles); - - if (next_time_to_send) - s = format(s, "\nNext time to send : %U, time_exponent:%ld\n", - format_time_interval, "d:h:m:s:f:u", - next_time_to_send, time_exponent); - else - s = format(s, "\nNext time to send : Immediate\n"); - s = format(s, "\nPath name : %s\n", chain_path_name); - s = format(s, "\nProfile index in use: %d\n", pow_profile_index); - s = format(s, "Pkts passed : 0x%Lx (validity:0x%Lx)\n", - total_pkts_using_this_profile, p->validity); - if (scv_is_decap(p)) - s = format(s, " This is Decap node. \n"); - vlib_cli_output(vm, "%v", s); - } - vec_free(s); - - return 0; -} - -VLIB_CLI_COMMAND(show_scv_profile_command) = -{ -.path = "show scv profile", -.short_help = "show scv profile", -.function = show_scv_profile_command_fn, -}; - -static clib_error_t *test_profile_renew_refresh_fn(vlib_main_t * vm, - unformat_input_t * input, vlib_cli_command_t * cmd) -{ - u8 renew_or_refresh = 0; - -#define TEST_PROFILE_RENEW 1 -#define TEST_PROFILE_REFRESH 2 - u8 *path_name = 0; - u32 start_index = 0, num_profiles = 0; - int rc = 0; - - while (unformat_check_input(input) != UNFORMAT_END_OF_INPUT) - { - if (unformat(input, "path-name %s start-index %d num-profiles %d", - &path_name, &start_index, &num_profiles)) - ; - else if (unformat(input, "renew")) - renew_or_refresh = TEST_PROFILE_RENEW; - else if (unformat(input, "refresh")) - renew_or_refresh = TEST_PROFILE_REFRESH; - else - break; - } - - if (renew_or_refresh == TEST_PROFILE_RENEW) - { - - rc = scv_profile_renew(path_name, (u8) start_index, (u8) num_profiles); - } - else if (renew_or_refresh == TEST_PROFILE_REFRESH) - { - - rc = scv_profile_refresh(path_name, (u8) start_index, - (u8) num_profiles); - } - else - { - vec_free(path_name); - return clib_error_return(0, "Enter renew or refresh"); - } - - vlib_cli_output(vm, "%s notification %s. rc = %d\n", - (renew_or_refresh == TEST_PROFILE_RENEW) ? "Renew" : "Refresh", - (rc != 0) ? "failed" : "sent", (u32) rc); - - vec_free(path_name); - - return 0; -} - -VLIB_CLI_COMMAND(test_ioam_profile_renew_refresh_cmd, static) = -{ -.path = "test ioam profile-notification ", -.short_help = - "test ioam profile-notification path-name <string> start-index <index> num-profiles <number> <renew|refresh>", -.function = test_profile_renew_refresh_fn, -}; - -static clib_error_t *set_scv_init_fn(vlib_main_t * vm, - unformat_input_t * input, vlib_cli_command_t * cmd) -{ - u8 *path_name = 0; - u32 start_index = 0, num_profiles = 0; - - while (unformat_check_input(input) != UNFORMAT_END_OF_INPUT) - { - if (unformat(input, "path-name %s start-index %d num-profiles %d", - &path_name, &start_index, &num_profiles)) - scv_init(path_name, num_profiles, start_index); - else - return clib_error_return(0, "unknown input `%U'", - format_unformat_error, input); - } - vec_free(path_name); - return 0; -} - -VLIB_CLI_COMMAND(set_ioam_sc_init_command, static) = -{ -.path = "set scv-init ", -.short_help = - "set scv-init path-name <string> start-index <index> num-profiles <number>", -.function = set_scv_init_fn, -}; diff --git a/vnet/vnet/lib-scv/scv_util.h b/vnet/vnet/lib-scv/scv_util.h deleted file mode 100644 index 5c304e9edc0..00000000000 --- a/vnet/vnet/lib-scv/scv_util.h +++ /dev/null @@ -1,278 +0,0 @@ -/* - * scv_util.h -- Service chain validation/Proof Of Transit Utility Header - * - * 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 include_vnet_scv_util_h -#define include_vnet_scv_util_h - -#include <vnet/ip/ip6_hop_by_hop.h> -#define MAXDEGREE 1024 -#define MAXTOKENLEN 128 -#define debug_ioam debug_ioam_fn -#define MAX_SERVICE_NODES 10 -/* Dont change this size 256. This is there across multiple components */ -#define PATH_NAME_SIZE 256 - -/* Ring size. this should be same as the one in ODL. Do not change this - without change in ODL. */ -#define MAX_SERVICE_PROFILES 16 - -/** - * Usage: - * - * On any [service] node that participates in Service / Path verfication: - * - * Step 1: Initialize this library by calling scv_init() - * Step 2: Setup a Service chain validation profile that contains all the parameters needed to compute cumulative: - * Call these functions: - * scv_profile_find - * scv_profile_create - * scv_profile_set_bit_mask - To setup how large we want the numbers used in the computation and random number <= 64 bits - * Step 2a: For validator do this: - * scv_set_validator - * Step 3a: At the initial Service node to generate Random number that will be read by all other nodes: - * scv_generate_random - * Step 3b: At all service nodes including initial and verifier call this to compute cumulative: - * scv_update_cumulative - * Step 4: At the verifier: - * scv_validate - * - */ - -typedef struct scv_profile_ -{ - u16 id; - u64 random; - u8 validator; - u64 secret_key; - u64 secret_share; - u64 prime; - u64 lpc; - u64 poly_pre_eval; - u64 bit_mask; - u64 limit; - u64 validity; - double primeinv; - // struct hlist_node my_hash_list; when this gets added to hashtbale -} scv_profile; - -extern scv_profile *pow_profile; -extern u16 pow_profile_index; -extern u64 total_pkts_using_this_profile; -extern u8 chain_path_name[PATH_NAME_SIZE]; -extern u16 invalid_profile_start_index; -extern u8 number_of_invalid_profiles; -extern f64 next_time_to_send; -extern u32 time_exponent; - -/* - * Initialize Service chain - */ -void scv_init(u8 * path_name, u8 max, u8 indx); - -/* - * Get maximum number of profiles configured for this chain. - */ -u8 scv_get_max_profiles(void); - -/* - * Find a SC profile by ID - */ -scv_profile *scv_profile_find(u16 id); - -static inline u16 scv_profile_get_id(scv_profile * profile) -{ - if (profile) - { - return (profile->id); - } - return (0); -} - -/* setup and clean up profile */ -void scv_profile_create(scv_profile * profile, u64 prime, - u64 poly2, u64 lpc, u64 secret_share, u64 validity); -/* - * Setup profile as a validator - */ -void scv_set_validator(scv_profile * profile, u64 key); -void scv_profile_cleanup(scv_profile * profile); - -/* - * Setup max bits to be used for random number generation - */ -#define MAX_BITS 64 -void scv_profile_set_bit_mask(scv_profile * profile, u16 bits); - -/* - * Given a random and cumulative compute the new cumulative for a given profile - */ -u64 scv_update_cumulative(scv_profile * profile, u64 cumulative, u64 random); - -/* - * return True if the cumulative matches secret from a profile - */ -u8 scv_validate(scv_profile * profile, u64 cumulative, u64 random); - -/* - * Utility function to get random number per pack - */ -u64 scv_generate_random(scv_profile * profile); - -int scv_profile_to_str(scv_profile * profile, char *buf, int n); - -extern void clear_ioam_scv_profiles(); - -static inline u8 scv_get_profile_in_use(void) -{ - return pow_profile_index; -} - -static inline - void scv_notification_reset(u16 start_index_recvd, u8 num_profiles_recvd) -{ - /* Profiles recevied w/o notn. Nothing to do. */ - if (number_of_invalid_profiles == 0) - return; - - /* Most likely case. Got all requested profiles */ - if (PREDICT_TRUE(num_profiles_recvd == number_of_invalid_profiles && - start_index_recvd == invalid_profile_start_index)) - { - number_of_invalid_profiles = 0; - invalid_profile_start_index = 0; - return; - } - - /* Received partial list */ - if (num_profiles_recvd < number_of_invalid_profiles) - { - ASSERT(start_index_recvd == invalid_profile_start_index); - invalid_profile_start_index = (start_index_recvd + num_profiles_recvd) - % scv_get_max_profiles(); - number_of_invalid_profiles -= num_profiles_recvd; - } - - return; -} - -int __attribute__ ((weak)) scv_profile_renew(u8 * path_name, - u8 start_index, u8 num_profiles); -int __attribute__ ((weak)) scv_profile_refresh(u8 * path_name, - u8 start_index, u8 num_profiles); - -static inline u8 scv_is_decap(scv_profile * p) -{ - return (p->validator == 1); -} - -static inline u16 scv_get_next_profile_id(vlib_main_t * vm, u16 id) -{ - int next_id, num_profiles = 0; - scv_profile *p; - u8 max; - - max = scv_get_max_profiles(); - - next_id = id; - - /* Check for new profile in the ring buffer until a valid one. Exclude - checking for the one already in use. */ - for (num_profiles = 0; num_profiles < max - 1; num_profiles++) - { - next_id = (next_id + 1) % max; - p = scv_profile_find(next_id); - if (p->validity != 0) - { - vlib_cli_output(vm, "Current id: %d, New id: %d\n", id, next_id); - return (next_id); - } - } - - return (id); -} - -static inline void -scv_profile_invalidate(vlib_main_t * vm, ip6_hop_by_hop_ioam_main_t * hm, - u16 id, u8 is_encap) -{ - scv_profile *p = scv_profile_find(id); - int rc; - u8 max; - f64 now = 0; - - p->validity = 0; - - /* If there are alredy profiles waiting. If so, use existing start_index. - */ - if (!number_of_invalid_profiles) - invalid_profile_start_index = id; - - max = scv_get_max_profiles(); - - /* Check whether the id is already included in existing list */ - if (!(id >= invalid_profile_start_index && - id <= (invalid_profile_start_index + - number_of_invalid_profiles - 1) % max)) - { - number_of_invalid_profiles++; - } - - if (number_of_invalid_profiles > scv_get_max_profiles()) - number_of_invalid_profiles = scv_get_max_profiles(); - - now = (f64) (((f64) hm->unix_time_0) + - (vlib_time_now(hm->vlib_main) - hm->vlib_time_0)); - if (now <= next_time_to_send) - return; - - if (is_encap) - { - rc = scv_profile_renew(chain_path_name, - (u8) invalid_profile_start_index, number_of_invalid_profiles); - if (rc != 0) - vlib_cli_output(vm, - "Renew notification- id start:%d, num %d failed. rc: %d\n", - invalid_profile_start_index, number_of_invalid_profiles, rc); - else - vlib_cli_output(vm, - "Renew notification- id start:%d num %d sent. \n", - invalid_profile_start_index, number_of_invalid_profiles); - - } - else - { - /* Non encap node. Send refresh notification for now. Later set a - timer and if there is no profile even after the timeout send - refresh notification. */ - rc = scv_profile_refresh(chain_path_name, - (u8) invalid_profile_start_index, number_of_invalid_profiles); - if (rc != 0) - vlib_cli_output(vm, - "Refresh notification- id start:%d, num %d failed. rc: %d\n", - invalid_profile_start_index, number_of_invalid_profiles, rc); - else - vlib_cli_output(vm, - "Refresh notification- id start:%d num %d sent. \n", - invalid_profile_start_index, number_of_invalid_profiles); - } - next_time_to_send = now + time_exponent; - time_exponent <<= 1; /* backoff time is power of 2 seconds */ - - return; -} - -#endif |