vpp - Vector Packet Processing

Age	Commit message (Expand)	Author	Files	Lines
2018-02-08	Geneve - reduce unit-test run time	Gabriel Ganne	1	-2/+2
2017-10-06	Initial GENEVE TUNNEL implementation and tests.	Marco Varlese	1	-0/+234

/* * 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/ip6_input.h> #include <vnet/ethernet/ethernet.h> #include <vnet/ppp/ppp.h> #include <vnet/hdlc/hdlc.h> #include <vnet/pg/pg.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; } /* Validate IP v6 packets and pass them either to forwarding code or drop exception packets. */ VLIB_NODE_FN (ip6_input_node) (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 thread_index = vm->thread_index; 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 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]; if (PREDICT_FALSE (ip6_address_is_multicast (&ip0->dst_address))) { arc0 = lm->mcast_feature_arc_index; next0 = IP6_INPUT_NEXT_LOOKUP_MULTICAST; } else { arc0 = lm->ucast_feature_arc_index; next0 = IP6_INPUT_NEXT_LOOKUP; } if (PREDICT_FALSE (ip6_address_is_multicast (&ip1->dst_address))) { arc1 = lm->mcast_feature_arc_index; next1 = IP6_INPUT_NEXT_LOOKUP_MULTICAST; } else { arc1 = lm->ucast_feature_arc_index; next1 = IP6_INPUT_NEXT_LOOKUP; } 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, thread_index, sw_if_index0, 1); vlib_increment_simple_counter (cm, thread_index, sw_if_index1, 1); ip6_input_check_x2 (vm, error_node, p0, p1, ip0, ip1, &next0, &next1); 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 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]; if (PREDICT_FALSE (ip6_address_is_multicast (&ip0->dst_address))) { arc0 = lm->mcast_feature_arc_index; next0 = IP6_INPUT_NEXT_LOOKUP_MULTICAST; } else { arc0 = lm->ucast_feature_arc_index; next0 = IP6_INPUT_NEXT_LOOKUP; } vnet_buffer (p0)->ip.adj_index[VLIB_RX] = ~0; vnet_feature_arc_start (arc0, sw_if_index0, &next0, p0); vlib_increment_simple_counter (cm, thread_index, sw_if_index0, 1); ip6_input_check_x1 (vm, error_node, p0, ip0, &next0); vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, n_left_to_next, pi0, next0); } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } return frame->n_vectors; } #ifndef CLIB_MARCH_VARIANT char *ip6_error_strings[] = { #define _(sym,string) string, foreach_ip6_error #undef _ }; #endif /* CLIB_MARCH_VARIANT */ /* *INDENT-OFF* */ VLIB_REGISTER_NODE (ip6_input_node) = { .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", [IP6_INPUT_NEXT_LOOKUP_MULTICAST] = "ip6-mfib-forward-lookup", }, .format_buffer = format_ip6_header, .format_trace = format_ip6_input_trace, }; /* *INDENT-ON* */ 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; uword *u = hash_get (ip_main.protocol_info_by_name, "IPV6_FRAGMENTATION"); if (u) { ip_protocol_info_t *info = vec_elt_at_index (ip_main.protocol_infos, *u); ASSERT (NULL == info->format_header); info->format_header = format_ip6_frag_hdr; } return /* no error */ 0; } VLIB_INIT_FUNCTION (ip6_init); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */