diff options
Diffstat (limited to 'src/vnet')
| -rw-r--r-- | src/vnet/CMakeLists.txt | 1 | ||||
| -rw-r--r-- | src/vnet/ip/icmp4.c | 9 | ||||
| -rw-r--r-- | src/vnet/ip/icmp4.h | 16 | ||||
| -rw-r--r-- | src/vnet/ip/ip4.h | 3 | ||||
| -rwxr-xr-x | src/vnet/ip/ping.c | 1261 | ||||
| -rw-r--r-- | src/vnet/ip/ping.h | 91 |
6 files changed, 11 insertions, 1370 deletions
diff --git a/src/vnet/CMakeLists.txt b/src/vnet/CMakeLists.txt index b107365a105..9c1bceb5753 100644 --- a/src/vnet/CMakeLists.txt +++ b/src/vnet/CMakeLists.txt @@ -454,7 +454,6 @@ list(APPEND VNET_SOURCES ip/ip_in_out_acl.c ip/ip_punt_drop.c ip/lookup.c - ip/ping.c ip/punt_api.c ip/punt.c ip/punt_node.c diff --git a/src/vnet/ip/icmp4.c b/src/vnet/ip/icmp4.c index 1cf6a93be50..1fab6471d2a 100644 --- a/src/vnet/ip/icmp4.c +++ b/src/vnet/ip/icmp4.c @@ -41,7 +41,6 @@ #include <vnet/ip/ip.h> #include <vnet/pg/pg.h> - static char *icmp_error_strings[] = { #define _(f,s) s, foreach_icmp4_error @@ -422,14 +421,6 @@ typedef enum IP4_ICMP_ERROR_N_NEXT, } ip4_icmp_error_next_t; -void -icmp4_error_set_vnet_buffer (vlib_buffer_t * b, u8 type, u8 code, u32 data) -{ - vnet_buffer (b)->ip.icmp.type = type; - vnet_buffer (b)->ip.icmp.code = code; - vnet_buffer (b)->ip.icmp.data = data; -} - static u8 icmp4_icmp_type_to_error (u8 type) { diff --git a/src/vnet/ip/icmp4.h b/src/vnet/ip/icmp4.h index ae805148c89..73bd1f40efd 100644 --- a/src/vnet/ip/icmp4.h +++ b/src/vnet/ip/icmp4.h @@ -26,9 +26,9 @@ _ (OPTION_WITH_ZERO_LENGTH, "option has zero length") \ _ (ECHO_REPLIES_SENT, "echo replies sent") \ _ (DST_LOOKUP_MISS, "icmp6 dst address lookup misses") \ - _ (DEST_UNREACH_SENT, "destination unreachable response sent") \ - _ (TTL_EXPIRE_SENT, "hop limit exceeded response sent") \ - _ (PARAM_PROBLEM_SENT, "parameter problem response sent") \ + _ (DEST_UNREACH_SENT, "destination unreachable response sent") \ + _ (TTL_EXPIRE_SENT, "hop limit exceeded response sent") \ + _ (PARAM_PROBLEM_SENT, "parameter problem response sent") \ _ (DROP, "error message dropped") typedef enum @@ -46,8 +46,14 @@ typedef struct format_function_t format_icmp4_input_trace; void ip4_icmp_register_type (vlib_main_t * vm, icmp4_type_t type, u32 node_index); -void icmp4_error_set_vnet_buffer (vlib_buffer_t * b, u8 type, u8 code, - u32 data); + +static_always_inline void +icmp4_error_set_vnet_buffer (vlib_buffer_t * b, u8 type, u8 code, u32 data) +{ + vnet_buffer (b)->ip.icmp.type = type; + vnet_buffer (b)->ip.icmp.code = code; + vnet_buffer (b)->ip.icmp.data = data; +} #endif /* included_vnet_icmp4_h */ diff --git a/src/vnet/ip/ip4.h b/src/vnet/ip/ip4.h index 9da5926e13f..2a3743febb3 100644 --- a/src/vnet/ip/ip4.h +++ b/src/vnet/ip/ip4.h @@ -281,9 +281,6 @@ uword ip4_udp_register_listener (vlib_main_t * vm, u16 dst_port, u32 next_node_index); -void -ip4_icmp_register_type (vlib_main_t * vm, icmp4_type_t type, u32 node_index); - u16 ip4_tcp_udp_compute_checksum (vlib_main_t * vm, vlib_buffer_t * p0, ip4_header_t * ip0); diff --git a/src/vnet/ip/ping.c b/src/vnet/ip/ping.c deleted file mode 100755 index 3847d837962..00000000000 --- a/src/vnet/ip/ping.c +++ /dev/null @@ -1,1261 +0,0 @@ -/* - * 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 <stddef.h> -#include <vnet/ip/ping.h> -#include <vnet/fib/ip6_fib.h> -#include <vnet/fib/ip4_fib.h> -#include <vnet/fib/fib_entry.h> -#include <vlib/vlib.h> - -ping_main_t ping_main; - -/** - * @file - * @brief IPv4 and IPv6 ICMP Ping. - * - * This file contains code to support IPv4 or IPv6 ICMP ECHO_REQUEST to - * network hosts. - * - */ - -typedef struct -{ - u16 id; - u16 seq; - u32 cli_process_node; - u8 is_ip6; -} icmp_echo_trace_t; - - -u8 * -format_icmp_echo_trace (u8 * s, va_list * va) -{ - CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *); - CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *); - icmp_echo_trace_t *t = va_arg (*va, icmp_echo_trace_t *); - - s = - format (s, "ICMP%s echo id %d seq %d", t->is_ip6 ? "6" : "4", t->id, - t->seq); - if (t->cli_process_node == PING_CLI_UNKNOWN_NODE) - { - s = format (s, " (unknown)"); - } - else - { - s = format (s, " send to cli node %d", t->cli_process_node); - } - - return s; -} - - -static u8 * -format_ip46_ping_result (u8 * s, va_list * args) -{ - send_ip46_ping_result_t res = va_arg (*args, send_ip46_ping_result_t); - - switch (res) - { -#define _(v, n) case SEND_PING_##v: s = format(s, "%s", n);break; - foreach_ip46_ping_result -#undef _ - } - - return (s); -} - - -/* - * Poor man's get-set-clear functions - * for manipulation of icmp_id -> cli_process_id - * mappings. - * - * There should normally be very few (0..1..2) of these - * mappings, so the linear search is a good strategy. - * - * Make them thread-safe via a simple spinlock. - * - */ - - -static_always_inline uword -get_cli_process_id_by_icmp_id_mt (vlib_main_t * vm, u16 icmp_id) -{ - ping_main_t *pm = &ping_main; - uword cli_process_id = PING_CLI_UNKNOWN_NODE; - ping_run_t *pr; - - clib_spinlock_lock_if_init (&pm->ping_run_check_lock); - vec_foreach (pr, pm->active_ping_runs) - { - if (pr->icmp_id == icmp_id) - { - cli_process_id = pr->cli_process_id; - break; - } - } - clib_spinlock_unlock_if_init (&pm->ping_run_check_lock); - return cli_process_id; -} - - -static_always_inline void -set_cli_process_id_by_icmp_id_mt (vlib_main_t * vm, u16 icmp_id, - uword cli_process_id) -{ - ping_main_t *pm = &ping_main; - ping_run_t *pr; - - clib_spinlock_lock_if_init (&pm->ping_run_check_lock); - vec_foreach (pr, pm->active_ping_runs) - { - if (pr->icmp_id == icmp_id) - { - pr->cli_process_id = cli_process_id; - goto have_found_and_set; - } - } - /* no such key yet - add a new one */ - ping_run_t new_pr = {.icmp_id = icmp_id,.cli_process_id = cli_process_id }; - vec_add1 (pm->active_ping_runs, new_pr); -have_found_and_set: - clib_spinlock_unlock_if_init (&pm->ping_run_check_lock); -} - - -static_always_inline void -clear_cli_process_id_by_icmp_id_mt (vlib_main_t * vm, u16 icmp_id) -{ - ping_main_t *pm = &ping_main; - ping_run_t *pr; - - clib_spinlock_lock_if_init (&pm->ping_run_check_lock); - vec_foreach (pr, pm->active_ping_runs) - { - if (pr->icmp_id == icmp_id) - { - vec_del1 (pm->active_ping_runs, pm->active_ping_runs - pr); - break; - } - } - clib_spinlock_unlock_if_init (&pm->ping_run_check_lock); -} - -static_always_inline int -ip46_get_icmp_id_and_seq (vlib_main_t * vm, vlib_buffer_t * b0, - u16 * out_icmp_id, u16 * out_icmp_seq, int is_ip6) -{ - int l4_offset; - if (is_ip6) - { - ip6_header_t *ip6 = vlib_buffer_get_current (b0); - if (ip6->protocol != IP_PROTOCOL_ICMP6) - { - return 0; - } - l4_offset = sizeof (*ip6); // IPv6 EH - } - else - { - ip4_header_t *ip4 = vlib_buffer_get_current (b0); - l4_offset = ip4_header_bytes (ip4); - - } - icmp46_header_t *icmp46 = vlib_buffer_get_current (b0) + l4_offset; - icmp46_echo_request_t *icmp46_echo = (icmp46_echo_request_t *) (icmp46 + 1); - - *out_icmp_id = clib_net_to_host_u16 (icmp46_echo->id); - *out_icmp_seq = clib_net_to_host_u16 (icmp46_echo->seq); - return 1; -} - -/* - * post the buffer to a given cli process node - the caller should forget bi0 after return. - */ - -static_always_inline void -ip46_post_icmp_reply_event (vlib_main_t * vm, uword cli_process_id, u32 bi0, - int is_ip6) -{ - vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0); - u64 nowts = clib_cpu_time_now (); - - /* Pass the timestamp to the cli_process thanks to the vnet_buffer unused metadata field */ - - /* Camping on unused data... just ensure statically that there is enough space */ - STATIC_ASSERT (ARRAY_LEN (vnet_buffer (b0)->unused) * - sizeof (vnet_buffer (b0)->unused[0]) > sizeof (nowts), - "ping reply timestamp fits within remaining space of vnet_buffer unused data"); - u64 *pnowts = (void *) &vnet_buffer (b0)->unused[0]; - *pnowts = nowts; - - u32 event_id = is_ip6 ? PING_RESPONSE_IP6 : PING_RESPONSE_IP4; - vlib_process_signal_event_mt (vm, cli_process_id, event_id, bi0); -} - - -static_always_inline void -ip46_echo_reply_maybe_trace_buffer (vlib_main_t * vm, - vlib_node_runtime_t * node, - uword cli_process_id, u16 id, u16 seq, - vlib_buffer_t * b0, int is_ip6) -{ - if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) - { - icmp_echo_trace_t *tr = vlib_add_trace (vm, node, b0, sizeof (*tr)); - tr->id = id; - tr->seq = seq; - tr->cli_process_node = cli_process_id; - tr->is_ip6 = is_ip6; - } -} - - -static_always_inline uword -ip46_icmp_echo_reply_inner_node_fn (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame, int do_trace, - int is_ip6) -{ - u32 n_left_from, *from, *to_next; - icmp46_echo_reply_next_t next_index; - - from = vlib_frame_vector_args (frame); - n_left_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; - /* - * The buffers (replies) are either posted to the CLI thread - * awaiting for them for subsequent analysis and disposal, - * or are sent to the punt node. - * - * So the only "next" node is a punt, normally. - */ - u32 next0 = ICMP46_ECHO_REPLY_NEXT_PUNT; - - bi0 = from[0]; - b0 = vlib_get_buffer (vm, bi0); - from += 1; - n_left_from -= 1; - - u16 icmp_id = ~0; - u16 icmp_seq = ~0; - uword cli_process_id = PING_CLI_UNKNOWN_NODE; - - if (ip46_get_icmp_id_and_seq (vm, b0, &icmp_id, &icmp_seq, is_ip6)) - { - cli_process_id = get_cli_process_id_by_icmp_id_mt (vm, icmp_id); - } - - if (do_trace) - ip46_echo_reply_maybe_trace_buffer (vm, node, cli_process_id, - icmp_id, icmp_seq, b0, - is_ip6); - - if (~0 == cli_process_id) - { - /* no outstanding requests for this reply, punt */ - /* speculatively enqueue b0 to the current next frame */ - to_next[0] = bi0; - to_next += 1; - n_left_to_next -= 1; - /* verify speculative enqueue, maybe switch current next frame */ - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, - bi0, next0); - } - else - { - /* Post the buffer to CLI thread. It will take care of freeing it. */ - ip46_post_icmp_reply_event (vm, cli_process_id, bi0, is_ip6); - } - } - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - } - return frame->n_vectors; -} - -/* - * select "with-trace" or "without-trace" codepaths upfront. - */ -static_always_inline uword -ip46_icmp_echo_reply_outer_node_fn (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame, int is_ip6) -{ - if (node->flags & VLIB_NODE_FLAG_TRACE) - return ip46_icmp_echo_reply_inner_node_fn (vm, node, frame, - 1 /* do_trace */ , is_ip6); - else - return ip46_icmp_echo_reply_inner_node_fn (vm, node, frame, - 0 /* do_trace */ , is_ip6); -} - -static uword -ip4_icmp_echo_reply_node_fn (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - return ip46_icmp_echo_reply_outer_node_fn (vm, node, frame, - 0 /* is_ip6 */ ); -} - -static uword -ip6_icmp_echo_reply_node_fn (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - return ip46_icmp_echo_reply_outer_node_fn (vm, node, frame, - 1 /* is_ip6 */ ); -} - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (ip6_icmp_echo_reply_node, static) = -{ - .function = ip6_icmp_echo_reply_node_fn, - .name = "ip6-icmp-echo-reply", - .vector_size = sizeof (u32), - .format_trace = format_icmp_echo_trace, - .n_next_nodes = ICMP46_ECHO_REPLY_N_NEXT, - .next_nodes = { - [ICMP46_ECHO_REPLY_NEXT_DROP] = "ip6-drop", - [ICMP46_ECHO_REPLY_NEXT_PUNT] = "ip6-punt", - }, -}; - -VLIB_REGISTER_NODE (ip4_icmp_echo_reply_node, static) = -{ - .function = ip4_icmp_echo_reply_node_fn, - .name = "ip4-icmp-echo-reply", - .vector_size = sizeof (u32), - .format_trace = format_icmp_echo_trace, - .n_next_nodes = ICMP46_ECHO_REPLY_N_NEXT, - .next_nodes = { - [ICMP46_ECHO_REPLY_NEXT_DROP] = "ip4-drop", - [ICMP46_ECHO_REPLY_NEXT_PUNT] = "ip4-punt", - }, -}; -/* *INDENT-ON* */ - - -/* - * A swarm of address-family agnostic helper functions - * for building and sending the ICMP echo request. - * - * Deliberately mostly "static" rather than "static inline" - * so one can trace them sanely if needed in debugger, if needed. - * - */ - -static_always_inline u8 -get_icmp_echo_payload_byte (int offset) -{ - return (offset % 256); -} - -/* Fill in the ICMP ECHO structure, return the safety-checked and possibly shrunk data_len */ -static u16 -init_icmp46_echo_request (vlib_main_t * vm, vlib_buffer_t * b0, - int l4_header_offset, - icmp46_echo_request_t * icmp46_echo, u16 seq_host, - u16 id_host, u64 now, u16 data_len) -{ - int i; - - - int l34_len = - l4_header_offset + sizeof (icmp46_header_t) + - offsetof (icmp46_echo_request_t, data); - int max_data_len = vlib_buffer_get_default_data_size (vm) - l34_len; - - int first_buf_data_len = data_len < max_data_len ? data_len : max_data_len; - - int payload_offset = 0; - for (i = 0; i < first_buf_data_len; i++) - icmp46_echo->data[i] = get_icmp_echo_payload_byte (payload_offset++); - - /* inspired by vlib_buffer_add_data */ - vlib_buffer_t *hb = b0; - int remaining_data_len = data_len - first_buf_data_len; - while (remaining_data_len) - { - int this_buf_data_len = - remaining_data_len < - vlib_buffer_get_default_data_size (vm) ? remaining_data_len : - vlib_buffer_get_default_data_size (vm); - int n_alloc = vlib_buffer_alloc (vm, &b0->next_buffer, 1); - if (n_alloc < 1) - { - /* That is how much we have so far - return it... */ - return (data_len - remaining_data_len); - } - b0->flags |= VLIB_BUFFER_NEXT_PRESENT; - /* move on to the newly acquired buffer */ - b0 = vlib_get_buffer (vm, b0->next_buffer); - /* initialize the data */ - for (i = 0; i < this_buf_data_len; i++) - { - b0->data[i] = get_icmp_echo_payload_byte (payload_offset++); - } - b0->current_length = this_buf_data_len; - b0->current_data = 0; - remaining_data_len -= this_buf_data_len; - } - hb->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID; - hb->current_length = l34_len + first_buf_data_len; - hb->total_length_not_including_first_buffer = data_len - first_buf_data_len; - - icmp46_echo->time_sent = now; - icmp46_echo->seq = clib_host_to_net_u16 (seq_host); - icmp46_echo->id = clib_host_to_net_u16 (id_host); - return data_len; -} - - -static u32 -ip46_fib_index_from_table_id (u32 table_id, int is_ip6) -{ - u32 fib_index = is_ip6 ? - ip6_fib_index_from_table_id (table_id) : - ip4_fib_index_from_table_id (table_id); - return fib_index; -} - -static fib_node_index_t -ip46_fib_table_lookup_host (u32 fib_index, ip46_address_t * pa46, int is_ip6) -{ - fib_node_index_t fib_entry_index = is_ip6 ? - ip6_fib_table_lookup (fib_index, &pa46->ip6, 128) : - ip4_fib_table_lookup (ip4_fib_get (fib_index), &pa46->ip4, 32); - return fib_entry_index; -} - -static u32 -ip46_get_resolving_interface (u32 fib_index, ip46_address_t * pa46, - int is_ip6) -{ - u32 sw_if_index = ~0; - if (~0 != fib_index) - { - fib_node_index_t fib_entry_index; - fib_entry_index = ip46_fib_table_lookup_host (fib_index, pa46, is_ip6); - sw_if_index = fib_entry_get_resolving_interface (fib_entry_index); - } - return sw_if_index; -} - -static u32 -ip46_fib_table_get_index_for_sw_if_index (u32 sw_if_index, int is_ip6) -{ - u32 fib_table_index = is_ip6 ? - ip6_fib_table_get_index_for_sw_if_index (sw_if_index) : - ip4_fib_table_get_index_for_sw_if_index (sw_if_index); - return fib_table_index; - -} - - -static int -ip46_fill_l3_header (ip46_address_t * pa46, vlib_buffer_t * b0, int is_ip6) -{ - if (is_ip6) - { - ip6_header_t *ip6 = vlib_buffer_get_current (b0); - /* Fill in ip6 header fields */ - ip6->ip_version_traffic_class_and_flow_label = - clib_host_to_net_u32 (0x6 << 28); - ip6->payload_length = 0; /* will be set later */ - ip6->protocol = IP_PROTOCOL_ICMP6; - ip6->hop_limit = 255; - ip6->dst_address = pa46->ip6; - ip6->src_address = pa46->ip6; - return (sizeof (ip6_header_t)); - } - else - { - ip4_header_t *ip4 = vlib_buffer_get_current (b0); - /* Fill in ip4 header fields */ - ip4->checksum = 0; - ip4->ip_version_and_header_length = 0x45; - ip4->tos = 0; - ip4->length = 0; /* will be set later */ - ip4->fragment_id = 0; - ip4->flags_and_fragment_offset = 0; - ip4->ttl = 0xff; - ip4->protocol = IP_PROTOCOL_ICMP; - ip4->src_address = pa46->ip4; - ip4->dst_address = pa46->ip4; - return (sizeof (ip4_header_t)); - } -} - -static int -ip46_set_src_address (u32 sw_if_index, vlib_buffer_t * b0, int is_ip6) -{ - int res; - if (is_ip6) - { - ip6_main_t *im = &ip6_main; - ip6_header_t *ip6 = vlib_buffer_get_current (b0); - res = - ip6_src_address_for_packet (&im->lookup_main, sw_if_index, - &ip6->dst_address, &ip6->src_address); - } - else - { - ip4_main_t *im = &ip4_main; - ip4_header_t *ip4 = vlib_buffer_get_current (b0); - res = - ip4_src_address_for_packet (&im->lookup_main, sw_if_index, - &ip4->src_address); - /* IP4 and IP6 paths have the inverse logic. Harmonize. */ - res = !res; - } - return res; -} - -static void -ip46_print_buffer_src_address (vlib_main_t * vm, vlib_buffer_t * b0, - int is_ip6) -{ - void *format_addr_func; - void *paddr; - if (is_ip6) - { - ip6_header_t *ip6 = vlib_buffer_get_current (b0); - format_addr_func = format_ip6_address; - paddr = &ip6->src_address; - } - else - { - ip4_header_t *ip4 = vlib_buffer_get_current (b0); - format_addr_func = format_ip4_address; - paddr = &ip4->src_address; - } - vlib_cli_output (vm, "Source address: %U ", format_addr_func, paddr); -} - -static u16 -ip46_fill_icmp_request_at (vlib_main_t * vm, int l4_offset, u16 seq_host, - u16 id_host, u16 data_len, vlib_buffer_t * b0, - int is_ip6) -{ - icmp46_header_t *icmp46 = vlib_buffer_get_current (b0) + l4_offset; - - icmp46->type = is_ip6 ? ICMP6_echo_request : ICMP4_echo_request; - icmp46->code = 0; - icmp46->checksum = 0; - - icmp46_echo_request_t *icmp46_echo = (icmp46_echo_request_t *) (icmp46 + 1); - - data_len = - init_icmp46_echo_request (vm, b0, l4_offset, icmp46_echo, seq_host, - id_host, clib_cpu_time_now (), data_len); - return data_len; -} - - -/* Compute ICMP4 checksum with multibuffer support. */ -u16 -ip4_icmp_compute_checksum (vlib_main_t * vm, vlib_buffer_t * p0, - ip4_header_t * ip0) -{ - ip_csum_t sum0; - u32 ip_header_length, payload_length_host_byte_order; - u32 n_this_buffer, n_bytes_left, n_ip_bytes_this_buffer; - u16 sum16; - void *data_this_buffer; - - ip_header_length = ip4_header_bytes (ip0); - payload_length_host_byte_order = - clib_net_to_host_u16 (ip0->length) - ip_header_length; - - /* ICMP4 checksum does not include the IP header */ - sum0 = 0; - - n_bytes_left = n_this_buffer = payload_length_host_byte_order; - data_this_buffer = (void *) ip0 + ip_header_length; - n_ip_bytes_this_buffer = - p0->current_length - (((u8 *) ip0 - p0->data) - p0->current_data); - if (n_this_buffer + ip_header_length > n_ip_bytes_this_buffer) - { - n_this_buffer = n_ip_bytes_this_buffer > ip_header_length ? - n_ip_bytes_this_buffer - ip_header_length : 0; - } - while (1) - { - sum0 = ip_incremental_checksum (sum0, data_this_buffer, n_this_buffer); - n_bytes_left -= n_this_buffer; - if (n_bytes_left == 0) - break; - - ASSERT (p0->flags & VLIB_BUFFER_NEXT_PRESENT); - p0 = vlib_get_buffer (vm, p0->next_buffer); - data_this_buffer = vlib_buffer_get_current (p0); - n_this_buffer = p0->current_length; - } - - sum16 = ~ip_csum_fold (sum0); - - return sum16; -} - - -static void -ip46_fix_len_and_csum (vlib_main_t * vm, int l4_offset, u16 data_len, - vlib_buffer_t * b0, int is_ip6) -{ - u16 payload_length = - data_len + sizeof (icmp46_header_t) + offsetof (icmp46_echo_request_t, - data); - u16 total_length = payload_length + l4_offset; - icmp46_header_t *icmp46 = vlib_buffer_get_current (b0) + l4_offset; - icmp46->checksum = 0; - - if (is_ip6) - { - ip6_header_t *ip6 = vlib_buffer_get_current (b0); - ip6->payload_length = clib_host_to_net_u16 (payload_length); - - int bogus_length = 0; - icmp46->checksum = - ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip6, &bogus_length); - } - else - { - ip4_header_t *ip4 = vlib_buffer_get_current (b0); - ip4->length = clib_host_to_net_u16 (total_length); - - ip4->checksum = ip4_header_checksum (ip4); - icmp46->checksum = ip4_icmp_compute_checksum (vm, b0, ip4); - } -} - -static u16 -at_most_a_frame (u32 count) -{ - return count > VLIB_FRAME_SIZE ? VLIB_FRAME_SIZE : count; -} - -static int -ip46_enqueue_packet (vlib_main_t * vm, vlib_buffer_t * b0, u32 burst, - int is_ip6) -{ - vlib_frame_t *f = 0; - u32 lookup_node_index = - is_ip6 ? ip6_lookup_node.index : ip4_lookup_node.index; - int n_sent = 0; - - u16 n_to_send; - - /* - * Enqueue the packet, possibly as one or more frames of copies to make - * bursts. We enqueue b0 as the very last buffer, when there is no possibility - * for error in vlib_buffer_copy, so as to allow the caller to free it - * in case we encounter the error in the middle of the loop. - */ - for (n_to_send = at_most_a_frame (burst), burst -= n_to_send; n_to_send > 0; - n_to_send = at_most_a_frame (burst), burst -= n_to_send) - { - f = vlib_get_frame_to_node (vm, lookup_node_index); - /* f can not be NULL here - frame allocation failure causes panic */ - - u32 *to_next = vlib_frame_vector_args (f); - f->n_vectors = n_to_send; - - while (n_to_send > 1) - { - vlib_buffer_t *b0copy = vlib_buffer_copy (vm, b0); - if (PREDICT_FALSE (b0copy == NULL)) - goto ship_and_ret; - *to_next++ = vlib_get_buffer_index (vm, b0copy); - n_to_send--; - n_sent++; - } - - /* n_to_send is guaranteed to equal 1 here */ - if (burst > 0) - { - /* not the last burst, so still make a copy for the last buffer */ - vlib_buffer_t *b0copy = vlib_buffer_copy (vm, b0); - if (PREDICT_FALSE (b0copy == NULL)) - goto ship_and_ret; - n_to_send--; - *to_next++ = vlib_get_buffer_index (vm, b0copy); - } - else - { - /* put the original buffer as the last one of an error-free run */ - *to_next++ = vlib_get_buffer_index (vm, b0); - } - vlib_put_frame_to_node (vm, lookup_node_index, f); - n_sent += f->n_vectors; - } - return n_sent; - /* - * We reach here in case we already enqueued one or more buffers - * and maybe one or more frames but could not make more copies. - * There is an outstanding frame - so ship it and return. - * Caller will have to free the b0 in this case, since - * we did not enqueue it here yet. - */ -ship_and_ret: - n_sent += f->n_vectors; - vlib_put_frame_to_node (vm, lookup_node_index, f); - return n_sent; -} - - -/* - * An address-family agnostic ping send function. - */ - -#define ERROR_OUT(e) do { err = e; goto done; } while (0) - -static send_ip46_ping_result_t -send_ip46_ping (vlib_main_t * vm, - u32 table_id, - ip46_address_t * pa46, - u32 sw_if_index, - u16 seq_host, u16 id_host, u16 data_len, u32 burst, - u8 verbose, int is_ip6) -{ - int err = SEND_PING_OK; - u32 bi0 = 0; - int n_buf0 = 0; - vlib_buffer_t *b0; - - n_buf0 = vlib_buffer_alloc (vm, &bi0, 1); - if (n_buf0 < 1) - ERROR_OUT (SEND_PING_ALLOC_FAIL); - - b0 = vlib_get_buffer (vm, bi0); - VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0); - - /* - * if the user did not provide a source interface, - * perform a resolution and use an interface - * via which it succeeds. - */ - u32 fib_index; - if (~0 == sw_if_index) - { - fib_index = ip46_fib_index_from_table_id (table_id, is_ip6); - sw_if_index = ip46_get_resolving_interface (fib_index, pa46, is_ip6); - } - else - fib_index = - ip46_fib_table_get_index_for_sw_if_index (sw_if_index, is_ip6); - - if (~0 == fib_index) - ERROR_OUT (SEND_PING_NO_TABLE); - if (~0 == sw_if_index) - ERROR_OUT (SEND_PING_NO_INTERFACE); - - vnet_buffer (b0)->sw_if_index[VLIB_RX] = sw_if_index; - vnet_buffer (b0)->sw_if_index[VLIB_TX] = fib_index; - - int l4_header_offset = ip46_fill_l3_header (pa46, b0, is_ip6); - - /* set the src address in the buffer */ - if (!ip46_set_src_address (sw_if_index, b0, is_ip6)) - ERROR_OUT (SEND_PING_NO_SRC_ADDRESS); - if (verbose) - ip46_print_buffer_src_address (vm, b0, is_ip6); - - data_len = - ip46_fill_icmp_request_at (vm, l4_header_offset, seq_host, id_host, - data_len, b0, is_ip6); - - ip46_fix_len_and_csum (vm, l4_header_offset, data_len, b0, is_ip6); - - int n_sent = ip46_enqueue_packet (vm, b0, burst, is_ip6); - if (n_sent < burst) - err = SEND_PING_NO_BUFFERS; - -done: - if (err != SEND_PING_OK) - { - if (n_buf0 > 0) - vlib_buffer_free (vm, &bi0, 1); - } - return err; -} - -static send_ip46_ping_result_t -send_ip6_ping (vlib_main_t * vm, - u32 table_id, ip6_address_t * pa6, - u32 sw_if_index, u16 seq_host, u16 id_host, u16 data_len, - u32 burst, u8 verbose) -{ - ip46_address_t target; - target.ip6 = *pa6; - return send_ip46_ping (vm, table_id, &target, sw_if_index, seq_host, - id_host, data_len, burst, verbose, 1 /* is_ip6 */ ); -} - -static send_ip46_ping_result_t -send_ip4_ping (vlib_main_t * vm, - u32 table_id, ip4_address_t * pa4, - u32 sw_if_index, u16 seq_host, u16 id_host, u16 data_len, - u32 burst, u8 verbose) -{ - ip46_address_t target; - ip46_address_set_ip4 (&target, pa4); - return send_ip46_ping (vm, table_id, &target, sw_if_index, seq_host, - id_host, data_len, burst, verbose, 0 /* is_ip6 */ ); -} - -static void -print_ip46_icmp_reply (vlib_main_t * vm, u32 bi0, int is_ip6) -{ - vlib_buffer_t *b0 = vlib_get_buffer (vm, bi0); - int l4_offset; - void *paddr; - void *format_addr_func; - u16 payload_length; - u8 ttl; - if (is_ip6) - { - ip6_header_t *ip6 = vlib_buffer_get_current (b0); - paddr = (void *) &ip6->src_address; - format_addr_func = (void *) format_ip6_address; - ttl = ip6->hop_limit; - l4_offset = sizeof (ip6_header_t); // FIXME - EH processing ? - payload_length = clib_net_to_host_u16 (ip6->payload_length); - } - else - { - ip4_header_t *ip4 = vlib_buffer_get_current (b0); - paddr = (void *) &ip4->src_address; - format_addr_func = (void *) format_ip4_address; - ttl = ip4->ttl; - l4_offset = ip4_header_bytes (ip4); - payload_length = - clib_net_to_host_u16 (ip4->length) + ip4_header_bytes (ip4); - } - icmp46_header_t *icmp = vlib_buffer_get_current (b0) + l4_offset; - icmp46_echo_request_t *icmp_echo = (icmp46_echo_request_t *) (icmp + 1); - u64 *dataplane_ts = (u64 *) & vnet_buffer (b0)->unused[0]; - - f64 clocks_per_second = ((f64) vm->clib_time.clocks_per_second); - f64 rtt = - ((f64) (*dataplane_ts - icmp_echo->time_sent)) / clocks_per_second; - - vlib_cli_output (vm, - "%d bytes from %U: icmp_seq=%d ttl=%d time=%.4f ms", - payload_length, - format_addr_func, - paddr, - clib_host_to_net_u16 (icmp_echo->seq), ttl, rtt * 1000.0); -} - -/* - * Perform the ping run with the given parameters in the current CLI process. - * Depending on whether pa4 or pa6 is set, runs IPv4 or IPv6 ping. - * The amusing side effect is of course if both are set, then both pings are sent. - * This behavior can be used to ping a dualstack host over IPv4 and IPv6 at once. - */ - -static void -run_ping_ip46_address (vlib_main_t * vm, u32 table_id, ip4_address_t * pa4, - ip6_address_t * pa6, u32 sw_if_index, - f64 ping_interval, u32 ping_repeat, u32 data_len, - u32 ping_burst, u32 verbose) -{ - int i; - uword curr_proc = vlib_current_process (vm); - u32 n_replies = 0; - u32 n_requests = 0; - u16 icmp_id; - - static u32 rand_seed = 0; - - if (PREDICT_FALSE (!rand_seed)) - rand_seed = random_default_seed (); - - icmp_id = random_u32 (&rand_seed) & 0xffff; - - while (~0 != get_cli_process_id_by_icmp_id_mt (vm, icmp_id)) - { - vlib_cli_output (vm, "ICMP ID collision at %d, incrementing", icmp_id); - icmp_id++; - } - - set_cli_process_id_by_icmp_id_mt (vm, icmp_id, curr_proc); - - for (i = 1; i <= ping_repeat; i++) - { - send_ip46_ping_result_t res = SEND_PING_OK; - f64 sleep_interval; - f64 time_ping_sent = vlib_time_now (vm); - if (pa6) - { - res = send_ip6_ping (vm, table_id, - pa6, sw_if_index, i, icmp_id, - data_len, ping_burst, verbose); - if (SEND_PING_OK == res) - n_requests += ping_burst; - else - vlib_cli_output (vm, "Failed: %U", format_ip46_ping_result, res); - } - if (pa4) - { - res = send_ip4_ping (vm, table_id, pa4, - sw_if_index, i, icmp_id, data_len, - ping_burst, verbose); - if (SEND_PING_OK == res) - n_requests += ping_burst; - else - vlib_cli_output (vm, "Failed: %U", format_ip46_ping_result, res); - } - - /* Collect and print the responses until it is time to send a next ping */ - - while ((i <= ping_repeat) - && - ((sleep_interval = - time_ping_sent + ping_interval - vlib_time_now (vm)) > 0.0)) - { - uword event_type, *event_data = 0; - vlib_process_wait_for_event_or_clock (vm, sleep_interval); - event_type = vlib_process_get_events (vm, &event_data); - switch (event_type) - { - case ~0: /* no events => timeout */ - break; - case PING_RESPONSE_IP6: - /* fall-through */ - case PING_RESPONSE_IP4: - { - int ii; - int is_ip6 = (event_type == PING_RESPONSE_IP6); - for (ii = 0; ii < vec_len (event_data); ii++) - { - u32 bi0 = event_data[ii]; - print_ip46_icmp_reply (vm, bi0, is_ip6); - n_replies++; - if (0 != bi0) - vlib_buffer_free (vm, &bi0, 1); - } - } - break; - default: - /* someone pressed a key, abort */ - vlib_cli_output (vm, "Aborted due to a keypress."); - goto double_break; - break; - } - vec_free (event_data); - } - } -double_break: - vlib_cli_output (vm, "\n"); - { - float loss = - (0 == - n_requests) ? 0 : 100.0 * ((float) n_requests - - (float) n_replies) / (float) n_requests; - vlib_cli_output (vm, - "Statistics: %u sent, %u received, %f%% packet loss\n", - n_requests, n_replies, loss); - clear_cli_process_id_by_icmp_id_mt (vm, icmp_id); - } -} - - - -static clib_error_t * -ping_ip_address (vlib_main_t * vm, - unformat_input_t * input, vlib_cli_command_t * cmd) -{ - ip4_address_t a4; - ip6_address_t a6; - clib_error_t *error = 0; - u32 ping_repeat = 5; - u32 ping_burst = 1; - u8 ping_ip4, ping_ip6; - vnet_main_t *vnm = vnet_get_main (); - u32 data_len = PING_DEFAULT_DATA_LEN; - u32 verbose = 0; - f64 ping_interval = PING_DEFAULT_INTERVAL; - u32 sw_if_index, table_id; - - table_id = 0; - ping_ip4 = ping_ip6 = 0; - sw_if_index = ~0; - - if (unformat (input, "%U", unformat_ip4_address, &a4)) - { - ping_ip4 = 1; - } - else if (unformat (input, "%U", unformat_ip6_address, &a6)) - { - ping_ip6 = 1; - } - else if (unformat (input, "ipv4")) - { - if (unformat (input, "%U", unformat_ip4_address, &a4)) - { - ping_ip4 = 1; - } - else - { - error = - clib_error_return (0, - "expecting IPv4 address but got `%U'", - format_unformat_error, input); - } - } - else if (unformat (input, "ipv6")) - { - if (unformat (input, "%U", unformat_ip6_address, &a6)) - { - ping_ip6 = 1; - } - else - { - error = - clib_error_return (0, - "expecting IPv6 address but got `%U'", - format_unformat_error, input); - } - } - else - { - error = - clib_error_return (0, - "expecting IP4/IP6 address `%U'. Usage: ping <addr> [source <intf>] [size <datasz>] [repeat <count>] [verbose]", - format_unformat_error, input); - goto done; - } - - /* allow for the second AF in the same ping */ - if (!ping_ip4 && (unformat (input, "ipv4"))) - { - if (unformat (input, "%U", unformat_ip4_address, &a4)) - { - ping_ip4 = 1; - } - } - else if (!ping_ip6 && (unformat (input, "ipv6"))) - { - if (unformat (input, "%U", unformat_ip6_address, &a6)) - { - ping_ip6 = 1; - } - } - - /* parse the rest of the parameters in a cycle */ - while (!unformat_eof (input, NULL)) - { - if (unformat (input, "source")) - { - if (!unformat_user - (input, unformat_vnet_sw_interface, vnm, &sw_if_index)) - { - error = - clib_error_return (0, - "unknown interface `%U'", - format_unformat_error, input); - goto done; - } - } - else if (unformat (input, "size")) - { - if (!unformat (input, "%u", &data_len)) - { - error = - clib_error_return (0, - "expecting size but got `%U'", - format_unformat_error, input); - goto done; - } - if (data_len > PING_MAXIMUM_DATA_SIZE) - { - error = - clib_error_return (0, - "%d is bigger than maximum allowed payload size %d", - data_len, PING_MAXIMUM_DATA_SIZE); - goto done; - } - } - else if (unformat (input, "table-id")) - { - if (!unformat (input, "%u", &table_id)) - { - error = - clib_error_return (0, - "expecting table-id but got `%U'", - format_unformat_error, input); - goto done; - } - } - else if (unformat (input, "interval")) - { - if (!unformat (input, "%f", &ping_interval)) - { - error = - clib_error_return (0, - "expecting interval (floating point number) got `%U'", - format_unformat_error, input); - goto done; - } - } - else if (unformat (input, "repeat")) - { - if (!unformat (input, "%u", &ping_repeat)) - { - error = - clib_error_return (0, - "expecting repeat count but got `%U'", - format_unformat_error, input); - goto done; - } - } - else if (unformat (input, "burst")) - { - if (!unformat (input, "%u", &ping_burst)) - { - error = - clib_error_return (0, - "expecting burst count but got `%U'", - format_unformat_error, input); - goto done; - } - } - else if (unformat (input, "verbose")) - { - verbose = 1; - } - else - { - error = clib_error_return (0, "unknown input `%U'", - format_unformat_error, input); - goto done; - } - } - -/* - * Operationally, one won't (and shouldn't) need to send more than a frame worth of pings. - * But it may be handy during the debugging. - */ - -#ifdef CLIB_DEBUG -#define MAX_PING_BURST (10*VLIB_FRAME_SIZE) -#else -#define MAX_PING_BURST (VLIB_FRAME_SIZE) -#endif - - if (ping_burst < 1 || ping_burst > MAX_PING_BURST) - return clib_error_return (0, "burst size must be between 1 and %u", - MAX_PING_BURST); - - run_ping_ip46_address (vm, table_id, ping_ip4 ? &a4 : NULL, - ping_ip6 ? &a6 : NULL, sw_if_index, ping_interval, - ping_repeat, data_len, ping_burst, verbose); -done: - return error; -} - -/*? - * This command sends an ICMP ECHO_REQUEST to network hosts. The address - * can be an IPv4 or IPv6 address (or both at the same time). - * - * @cliexpar - * @parblock - * Example of how ping an IPv4 address: - * @cliexstart{ping 172.16.1.2 source GigabitEthernet2/0/0 repeat 2} - * 64 bytes from 172.16.1.2: icmp_seq=1 ttl=64 time=.1090 ms - * 64 bytes from 172.16.1.2: icmp_seq=2 ttl=64 time=.0914 ms - * - * Statistics: 2 sent, 2 received, 0% packet loss - * @cliexend - * - * Example of how ping both an IPv4 address and IPv6 address at the same time: - * @cliexstart{ping 172.16.1.2 ipv6 fe80::24a5:f6ff:fe9c:3a36 source GigabitEthernet2/0/0 repeat 2 verbose} - * Adjacency index: 10, sw_if_index: 1 - * Adj: ip6-discover-neighbor - * Adj Interface: 0 - * Forced set interface: 1 - * Adjacency index: 0, sw_if_index: 4294967295 - * Adj: ip4-miss - * Adj Interface: 0 - * Forced set interface: 1 - * Source address: 172.16.1.1 - * 64 bytes from 172.16.1.2: icmp_seq=1 ttl=64 time=.1899 ms - * Adjacency index: 10, sw_if_index: 1 - * Adj: ip6-discover-neighbor - * Adj Interface: 0 - * Forced set interface: 1 - * Adjacency index: 0, sw_if_index: 4294967295 - * Adj: ip4-miss - * Adj Interface: 0 - * Forced set interface: 1 - * Source address: 172.16.1.1 - * 64 bytes from 172.16.1.2: icmp_seq=2 ttl=64 time=.0910 ms - * - * Statistics: 4 sent, 2 received, 50% packet loss - * @cliexend - * @endparblock -?*/ -/* *INDENT-OFF* */ -VLIB_CLI_COMMAND (ping_command, static) = -{ - .path = "ping", - .function = ping_ip_address, - .short_help = "ping {<ip-addr> | ipv4 <ip4-addr> | ipv6 <ip6-addr>}" - " [ipv4 <ip4-addr> | ipv6 <ip6-addr>] [source <interface>]" - " [size <pktsize:60>] [interval <sec:1>] [repeat <cnt:5>] [table-id <id:0>]" - " [burst <count:1>] [verbose]", - .is_mp_safe = 1, -}; -/* *INDENT-ON* */ - -static clib_error_t * -ping_cli_init (vlib_main_t * vm) -{ - vlib_thread_main_t *tm = vlib_get_thread_main (); - ping_main_t *pm = &ping_main; - - pm->ip6_main = &ip6_main; - pm->ip4_main = &ip4_main; - icmp6_register_type (vm, ICMP6_echo_reply, ip6_icmp_echo_reply_node.index); - ip4_icmp_register_type (vm, ICMP4_echo_reply, - ip4_icmp_echo_reply_node.index); - if (tm->n_vlib_mains > 1) - clib_spinlock_init (&pm->ping_run_check_lock); - return 0; -} - -VLIB_INIT_FUNCTION (ping_cli_init); - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ diff --git a/src/vnet/ip/ping.h b/src/vnet/ip/ping.h deleted file mode 100644 index f1faa998f7d..00000000000 --- a/src/vnet/ip/ping.h +++ /dev/null @@ -1,91 +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. - */ -#ifndef included_vnet_ping_h -#define included_vnet_ping_h - - -#include <vnet/ip/ip.h> - -#include <vnet/ip/lookup.h> - -typedef enum -{ - PING_RESPONSE_IP6 = 42, - PING_RESPONSE_IP4, -} ping_response_type_t; - -#define foreach_ip46_ping_result \ - _ (OK, "OK") \ - _ (ALLOC_FAIL, "packet allocation failed") \ - _ (NO_INTERFACE, "no egress interface") \ - _ (NO_TABLE, "no FIB table for lookup") \ - _ (NO_SRC_ADDRESS, "no source address for egress interface") \ - _ (NO_BUFFERS, "could not allocate a new buffer") \ - -typedef enum -{ -#define _(v, s) SEND_PING_##v, - foreach_ip46_ping_result -#undef _ -} send_ip46_ping_result_t; - -/* - * Currently running ping command. - */ -typedef struct ping_run_t -{ - u16 icmp_id; - uword cli_process_id; -} ping_run_t; - -typedef struct ping_main_t -{ - ip6_main_t *ip6_main; - ip4_main_t *ip4_main; - /* a vector of current ping runs. */ - ping_run_t *active_ping_runs; - /* a lock held while add/remove/search on active_ping_runs */ - clib_spinlock_t ping_run_check_lock; -} ping_main_t; - -extern ping_main_t ping_main; - -#define PING_DEFAULT_DATA_LEN 60 -#define PING_DEFAULT_INTERVAL 1.0 - -#define PING_MAXIMUM_DATA_SIZE 32768 - -#define PING_CLI_UNKNOWN_NODE (~0) - -/* *INDENT-OFF* */ - -typedef CLIB_PACKED (struct { - u16 id; - u16 seq; - u64 time_sent; - u8 data[0]; -}) icmp46_echo_request_t; - -/* *INDENT-ON* */ - - -typedef enum -{ - ICMP46_ECHO_REPLY_NEXT_DROP, - ICMP46_ECHO_REPLY_NEXT_PUNT, - ICMP46_ECHO_REPLY_N_NEXT, -} icmp46_echo_reply_next_t; - -#endif /* included_vnet_ping_h */ |