diff options
Diffstat (limited to 'vnet/vnet/ip/ip6_input.c')
| -rw-r--r-- | vnet/vnet/ip/ip6_input.c | 353 |
1 files changed, 0 insertions, 353 deletions
diff --git a/vnet/vnet/ip/ip6_input.c b/vnet/vnet/ip/ip6_input.c deleted file mode 100644 index bbc2cebaa39..00000000000 --- a/vnet/vnet/ip/ip6_input.c +++ /dev/null @@ -1,353 +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. - */ -/* - * ip/ip6_input.c: IP v6 input node - * - * Copyright (c) 2008 Eliot Dresselhaus - * - * Permission is hereby granted, free of charge, to any person obtaining - * a copy of this software and associated documentation files (the - * "Software"), to deal in the Software without restriction, including - * without limitation the rights to use, copy, modify, merge, publish, - * distribute, sublicense, and/or sell copies of the Software, and to - * permit persons to whom the Software is furnished to do so, subject to - * the following conditions: - * - * The above copyright notice and this permission notice shall be - * included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE - * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION - * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION - * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - -#include <vnet/ip/ip.h> -#include <vnet/ethernet/ethernet.h> -#include <vnet/ppp/ppp.h> -#include <vnet/hdlc/hdlc.h> - -typedef struct -{ - u8 packet_data[64]; -} ip6_input_trace_t; - -static u8 * -format_ip6_input_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 *); - ip6_input_trace_t *t = va_arg (*va, ip6_input_trace_t *); - - s = format (s, "%U", - format_ip6_header, t->packet_data, sizeof (t->packet_data)); - - return s; -} - -typedef enum -{ - IP6_INPUT_NEXT_DROP, - IP6_INPUT_NEXT_LOOKUP, - IP6_INPUT_NEXT_ICMP_ERROR, - IP6_INPUT_N_NEXT, -} ip6_input_next_t; - -/* Validate IP v6 packets and pass them either to forwarding code - or drop exception packets. */ -static uword -ip6_input (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - vnet_main_t *vnm = vnet_get_main (); - ip6_main_t *im = &ip6_main; - ip_lookup_main_t *lm = &im->lookup_main; - u32 n_left_from, *from, *to_next; - ip6_input_next_t next_index; - vlib_node_runtime_t *error_node = - vlib_node_get_runtime (vm, ip6_input_node.index); - vlib_simple_counter_main_t *cm; - u32 cpu_index = os_get_cpu_number (); - - from = vlib_frame_vector_args (frame); - n_left_from = frame->n_vectors; - next_index = node->cached_next_index; - - if (node->flags & VLIB_NODE_FLAG_TRACE) - vlib_trace_frame_buffers_only (vm, node, from, frame->n_vectors, - /* stride */ 1, - sizeof (ip6_input_trace_t)); - - cm = vec_elt_at_index (vnm->interface_main.sw_if_counters, - VNET_INTERFACE_COUNTER_IP6); - - 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) - { - vlib_buffer_t *p0, *p1; - ip6_header_t *ip0, *ip1; - u32 pi0, sw_if_index0, next0 = 0; - u32 pi1, sw_if_index1, next1 = 0; - u8 error0, error1, arc0, arc1; - - /* 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, sizeof (ip0[0]), LOAD); - CLIB_PREFETCH (p3->data, sizeof (ip1[0]), LOAD); - } - - pi0 = from[0]; - pi1 = from[1]; - - to_next[0] = pi0; - to_next[1] = pi1; - from += 2; - to_next += 2; - n_left_from -= 2; - n_left_to_next -= 2; - - p0 = vlib_get_buffer (vm, pi0); - p1 = vlib_get_buffer (vm, pi1); - - ip0 = vlib_buffer_get_current (p0); - ip1 = vlib_buffer_get_current (p1); - - sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX]; - sw_if_index1 = vnet_buffer (p1)->sw_if_index[VLIB_RX]; - - arc0 = - ip6_address_is_multicast (&ip0->dst_address) ? - lm->mcast_feature_arc_index : lm->ucast_feature_arc_index; - arc1 = - ip6_address_is_multicast (&ip1->dst_address) ? - lm->mcast_feature_arc_index : lm->ucast_feature_arc_index; - - vnet_buffer (p0)->ip.adj_index[VLIB_RX] = ~0; - vnet_buffer (p1)->ip.adj_index[VLIB_RX] = ~0; - - vnet_feature_arc_start (arc0, sw_if_index0, &next0, p0); - vnet_feature_arc_start (arc1, sw_if_index1, &next1, p1); - - vlib_increment_simple_counter (cm, cpu_index, sw_if_index0, 1); - vlib_increment_simple_counter (cm, cpu_index, sw_if_index1, 1); - - error0 = error1 = IP6_ERROR_NONE; - - /* Version != 6? Drop it. */ - error0 = - (clib_net_to_host_u32 - (ip0->ip_version_traffic_class_and_flow_label) >> 28) != - 6 ? IP6_ERROR_VERSION : error0; - error1 = - (clib_net_to_host_u32 - (ip1->ip_version_traffic_class_and_flow_label) >> 28) != - 6 ? IP6_ERROR_VERSION : error1; - - /* hop limit < 1? Drop it. for link-local broadcast packets, - * like dhcpv6 packets from client has hop-limit 1, which should not - * be dropped. - */ - error0 = ip0->hop_limit < 1 ? IP6_ERROR_TIME_EXPIRED : error0; - error1 = ip1->hop_limit < 1 ? IP6_ERROR_TIME_EXPIRED : error1; - - /* L2 length must be at least minimal IP header. */ - error0 = - p0->current_length < - sizeof (ip0[0]) ? IP6_ERROR_TOO_SHORT : error0; - error1 = - p1->current_length < - sizeof (ip1[0]) ? IP6_ERROR_TOO_SHORT : error1; - - if (PREDICT_FALSE (error0 != IP6_ERROR_NONE)) - { - if (error0 == IP6_ERROR_TIME_EXPIRED) - { - icmp6_error_set_vnet_buffer (p0, ICMP6_time_exceeded, - ICMP6_time_exceeded_ttl_exceeded_in_transit, - 0); - next0 = IP6_INPUT_NEXT_ICMP_ERROR; - } - else - { - next0 = IP6_INPUT_NEXT_DROP; - } - } - if (PREDICT_FALSE (error1 != IP6_ERROR_NONE)) - { - if (error1 == IP6_ERROR_TIME_EXPIRED) - { - icmp6_error_set_vnet_buffer (p1, ICMP6_time_exceeded, - ICMP6_time_exceeded_ttl_exceeded_in_transit, - 0); - next1 = IP6_INPUT_NEXT_ICMP_ERROR; - } - else - { - next1 = IP6_INPUT_NEXT_DROP; - } - } - - p0->error = error_node->errors[error0]; - p1->error = error_node->errors[error1]; - - 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) - { - vlib_buffer_t *p0; - ip6_header_t *ip0; - u32 pi0, sw_if_index0, next0 = 0; - u8 error0, arc0; - - pi0 = from[0]; - to_next[0] = pi0; - from += 1; - to_next += 1; - n_left_from -= 1; - n_left_to_next -= 1; - - p0 = vlib_get_buffer (vm, pi0); - ip0 = vlib_buffer_get_current (p0); - - sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX]; - arc0 = - ip6_address_is_multicast (&ip0->dst_address) ? - lm->mcast_feature_arc_index : lm->ucast_feature_arc_index; - vnet_buffer (p0)->ip.adj_index[VLIB_RX] = ~0; - vnet_feature_arc_start (arc0, sw_if_index0, &next0, p0); - - vlib_increment_simple_counter (cm, cpu_index, sw_if_index0, 1); - error0 = IP6_ERROR_NONE; - - /* Version != 6? Drop it. */ - error0 = - (clib_net_to_host_u32 - (ip0->ip_version_traffic_class_and_flow_label) >> 28) != - 6 ? IP6_ERROR_VERSION : error0; - - /* hop limit < 1? Drop it. for link-local broadcast packets, - * like dhcpv6 packets from client has hop-limit 1, which should not - * be dropped. - */ - error0 = ip0->hop_limit < 1 ? IP6_ERROR_TIME_EXPIRED : error0; - - /* L2 length must be at least minimal IP header. */ - error0 = - p0->current_length < - sizeof (ip0[0]) ? IP6_ERROR_TOO_SHORT : error0; - - if (PREDICT_FALSE (error0 != IP6_ERROR_NONE)) - { - if (error0 == IP6_ERROR_TIME_EXPIRED) - { - icmp6_error_set_vnet_buffer (p0, ICMP6_time_exceeded, - ICMP6_time_exceeded_ttl_exceeded_in_transit, - 0); - next0 = IP6_INPUT_NEXT_ICMP_ERROR; - } - else - { - next0 = IP6_INPUT_NEXT_DROP; - } - } - p0->error = error_node->errors[error0]; - - 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 frame->n_vectors; -} - -static char *ip6_error_strings[] = { -#define _(sym,string) string, - foreach_ip6_error -#undef _ -}; - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (ip6_input_node) = { - .function = ip6_input, - .name = "ip6-input", - .vector_size = sizeof (u32), - - .n_errors = IP6_N_ERROR, - .error_strings = ip6_error_strings, - - .n_next_nodes = IP6_INPUT_N_NEXT, - .next_nodes = { - [IP6_INPUT_NEXT_DROP] = "error-drop", - [IP6_INPUT_NEXT_LOOKUP] = "ip6-lookup", - [IP6_INPUT_NEXT_ICMP_ERROR] = "ip6-icmp-error", - }, - - .format_buffer = format_ip6_header, - .format_trace = format_ip6_input_trace, -}; -/* *INDENT-ON* */ - -VLIB_NODE_FUNCTION_MULTIARCH (ip6_input_node, ip6_input) - static clib_error_t *ip6_init (vlib_main_t * vm) -{ - ethernet_register_input_type (vm, ETHERNET_TYPE_IP6, ip6_input_node.index); - ppp_register_input_protocol (vm, PPP_PROTOCOL_ip6, ip6_input_node.index); - hdlc_register_input_protocol (vm, HDLC_PROTOCOL_ip6, ip6_input_node.index); - - { - pg_node_t *pn; - pn = pg_get_node (ip6_input_node.index); - pn->unformat_edit = unformat_pg_ip6_header; - } - - /* Set flow hash to something non-zero. */ - ip6_main.flow_hash_seed = 0xdeadbeef; - - /* Default hop limit for packets we generate. */ - ip6_main.host_config.ttl = 64; - - return /* no error */ 0; -} - -VLIB_INIT_FUNCTION (ip6_init); - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |