vpp - Vector Packet Processing

Age	Commit message (Expand)	Author	Files	Lines
2017-11-03	Add C++ files to Doxygen	Chris Luke	1	-1/+1
2017-09-28	General documentation updates	Chris Luke	1	-1/+2
2016-09-21	Refactor pre-Doxy siphon scripts; VPP-396	Chris Luke	1	-0/+3
2016-09-21	Move doxytags file to html output directory	Chris Luke	1	-1/+1
2016-09-07	VPP-346 Improve Doxygen include path mechanism	Chris Luke	1	-1/+1
2016-09-06	VPP-346 More VPP doc fixes	Chris Luke	1	-2/+3
2016-09-01	VPP-346 A swathe of doc fixes	Chris Luke	1	-1/+3
2016-08-31	VPP-221 CLI auto-documentation infrastructure	Chris Luke	1	-0/+13
2016-08-06	Add DPDK definition to DOXYGEN	Keith Burns (alagalah)	1	-2/+3
2016-07-26	Fix missing include dirs in doxygen	Chris Luke	1	-1/+1
2016-07-07	Add some doxygen tags	Dave Barach	1	-0/+1
2016-05-15	VPP-62 Add a doxy filter to enable vpe.api doc	Chris Luke	1	-3/+5
2016-05-13	VPP-57 Add Doxygen to VPP	Chris Luke	1	-0/+2433

/* * nsh_pop.c - nsh POP only processing * * Copyright (c) 2017 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 <vnet/plugin/plugin.h> #include <nsh/nsh.h> #include <vnet/gre/packet.h> #include <vnet/vxlan/vxlan.h> #include <vnet/vxlan-gpe/vxlan_gpe.h> #include <vnet/l2/l2_classify.h> #include <vlibapi/api.h> #include <vlibmemory/api.h> extern nsh_option_map_t * nsh_md2_lookup_option (u16 class, u8 type); extern u8 * format_nsh_header (u8 * s, va_list * args); extern u8 * format_nsh_node_map_trace (u8 * s, va_list * args); extern u8 * format_nsh_pop_header (u8 * s, va_list * args); extern u8 * format_nsh_pop_node_map_trace (u8 * s, va_list * args); static uword nsh_pop_inline (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { u32 n_left_from, next_index, *from, *to_next; nsh_main_t * nm = &nsh_main; from = vlib_frame_vector_args(from_frame); n_left_from = 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 >= 4 && n_left_to_next >= 2) { u32 bi0, bi1; vlib_buffer_t * b0, *b1; u32 next0 = NSH_NODE_NEXT_DROP, next1 = NSH_NODE_NEXT_DROP; uword * entry0, *entry1; nsh_base_header_t * hdr0 = 0, *hdr1 = 0; u32 header_len0 = 0, header_len1 = 0; u32 nsp_nsi0, nsp_nsi1; u32 error0, error1; nsh_map_t * map0 = 0, *map1 = 0; /* 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, 2*CLIB_CACHE_LINE_BYTES, LOAD); CLIB_PREFETCH(p3->data, 2*CLIB_CACHE_LINE_BYTES, LOAD); } bi0 = from[0]; bi1 = from[1]; to_next[0] = bi0; to_next[1] = bi1; from += 2; to_next += 2; n_left_from -= 2; n_left_to_next -= 2; error0 = 0; error1 = 0; b0 = vlib_get_buffer(vm, bi0); b1 = vlib_get_buffer(vm, bi1); hdr0 = vlib_buffer_get_current(b0); nsp_nsi0 = hdr0->nsp_nsi; header_len0 = hdr0->length * 4; hdr1 = vlib_buffer_get_current(b1); nsp_nsi1 = hdr1->nsp_nsi; header_len1 = hdr1->length * 4; /* Process packet 0 */ entry0 = hash_get_mem(nm->nsh_mapping_by_key, &nsp_nsi0); if (PREDICT_FALSE(entry0 == 0)) { error0 = NSH_NODE_ERROR_NO_MAPPING; goto trace0; } /* Entry should point to a mapping ...*/ map0 = pool_elt_at_index(nm->nsh_mappings, entry0[0]); /* set up things for next node to transmit ie which node to handle it and where */ next0 = map0->next_node; //vnet_buffer(b0)->sw_if_index[VLIB_TX] = map0->sw_if_index; if(PREDICT_FALSE(map0->nsh_action == NSH_ACTION_POP)) { /* Manipulate MD2 */ if(PREDICT_FALSE(hdr0->md_type == 2)) { if (PREDICT_FALSE(next0 == NSH_NODE_NEXT_DROP)) { error0 = NSH_NODE_ERROR_INVALID_OPTIONS; goto trace0; } //vnet_buffer(b0)->sw_if_index[VLIB_RX] = map0->sw_if_index; } /* Pop NSH header */ vlib_buffer_advance(b0, (word)header_len0); goto trace0; } entry0 = hash_get_mem(nm->nsh_entry_by_key, &map0->mapped_nsp_nsi); if (PREDICT_FALSE(entry0 == 0)) { error0 = NSH_NODE_ERROR_NO_ENTRY; goto trace0; } trace0: b0->error = error0 ? node->errors[error0] : 0; if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) { nsh_input_trace_t *tr = vlib_add_trace(vm, node, b0, sizeof(*tr)); clib_memcpy_fast ( &(tr->trace_data), hdr0, (hdr0->length*4) ); } /* Process packet 1 */ entry1 = hash_get_mem(nm->nsh_mapping_by_key, &nsp_nsi1); if (PREDICT_FALSE(entry1 == 0)) { error1 = NSH_NODE_ERROR_NO_MAPPING; goto trace1; } /* Entry should point to a mapping ...*/ map1 = pool_elt_at_index(nm->nsh_mappings, entry1[0]); /* set up things for next node to transmit ie which node to handle it and where */ next1 = map1->next_node; //vnet_buffer(b1)->sw_if_index[VLIB_TX] = map1->sw_if_index; if(PREDICT_FALSE(map1->nsh_action == NSH_ACTION_POP)) { /* Manipulate MD2 */ if(PREDICT_FALSE(hdr1->md_type == 2)) { if (PREDICT_FALSE(next1 == NSH_NODE_NEXT_DROP)) { error1 = NSH_NODE_ERROR_INVALID_OPTIONS; goto trace1; } //vnet_buffer(b1)->sw_if_index[VLIB_RX] = map1->sw_if_index; } /* Pop NSH header */ vlib_buffer_advance(b1, (word)header_len1); goto trace1; } entry1 = hash_get_mem(nm->nsh_entry_by_key, &map1->mapped_nsp_nsi); if (PREDICT_FALSE(entry1 == 0)) { error1 = NSH_NODE_ERROR_NO_ENTRY; goto trace1; } trace1: b1->error = error1 ? node->errors[error1] : 0; if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED)) { nsh_input_trace_t *tr = vlib_add_trace(vm, node, b1, sizeof(*tr)); clib_memcpy_fast ( &(tr->trace_data), hdr1, (hdr1->length*4) ); } vlib_validate_buffer_enqueue_x2(vm, node, next_index, to_next, n_left_to_next, bi0, bi1, next0, next1); } while (n_left_from > 0 && n_left_to_next > 0) { u32 bi0 = 0; vlib_buffer_t * b0 = NULL; u32 next0 = NSH_NODE_NEXT_DROP; uword * entry0; nsh_base_header_t * hdr0 = 0; u32 header_len0 = 0; u32 nsp_nsi0; u32 error0; nsh_map_t * map0 = 0; bi0 = from[0]; to_next[0] = bi0; from += 1; to_next += 1; n_left_from -= 1; n_left_to_next -= 1; error0 = 0; b0 = vlib_get_buffer(vm, bi0); hdr0 = vlib_buffer_get_current(b0); nsp_nsi0 = hdr0->nsp_nsi; header_len0 = hdr0->length * 4; entry0 = hash_get_mem(nm->nsh_mapping_by_key, &nsp_nsi0); if (PREDICT_FALSE(entry0 == 0)) { error0 = NSH_NODE_ERROR_NO_MAPPING; goto trace00; } /* Entry should point to a mapping ...*/ map0 = pool_elt_at_index(nm->nsh_mappings, entry0[0]); /* set up things for next node to transmit ie which node to handle it and where */ next0 = map0->next_node; //vnet_buffer(b0)->sw_if_index[VLIB_TX] = map0->sw_if_index; if(PREDICT_FALSE(map0->nsh_action == NSH_ACTION_POP)) { /* Manipulate MD2 */ if(PREDICT_FALSE(hdr0->md_type == 2)) { if (PREDICT_FALSE(next0 == NSH_NODE_NEXT_DROP)) { error0 = NSH_NODE_ERROR_INVALID_OPTIONS; goto trace00; } //vnet_buffer(b0)->sw_if_index[VLIB_RX] = map0->sw_if_index; } /* Pop NSH header */ vlib_buffer_advance(b0, (word)header_len0); goto trace00; } entry0 = hash_get_mem(nm->nsh_entry_by_key, &map0->mapped_nsp_nsi); if (PREDICT_FALSE(entry0 == 0)) { error0 = NSH_NODE_ERROR_NO_ENTRY; goto trace00; } trace00: b0->error = error0 ? node->errors[error0] : 0; if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) { nsh_input_trace_t *tr = vlib_add_trace(vm, node, b0, sizeof(*tr)); clib_memcpy_fast ( &(tr->trace_data[0]), hdr0, (hdr0->length*4) ); } vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next, n_left_to_next, bi0, next0); } vlib_put_next_frame(vm, node, next_index, n_left_to_next); } return from_frame->n_vectors; } /** * @brief Graph processing dispatch function for NSH Input * * @node nsh_input * @param *vm * @param *node * @param *from_frame * * @return from_frame->n_vectors * */ VLIB_NODE_FN (nsh_pop_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { return nsh_pop_inline (vm, node, from_frame); } static char * nsh_pop_node_error_strings[] = { #define _(sym,string) string, foreach_nsh_node_error #undef _ }; /* register nsh-input node */ VLIB_REGISTER_NODE (nsh_pop_node) = { .name = "nsh-pop", .vector_size = sizeof (u32), .format_trace = format_nsh_pop_node_map_trace, .format_buffer = format_nsh_pop_header, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = ARRAY_LEN(nsh_pop_node_error_strings), .error_strings = nsh_pop_node_error_strings, .n_next_nodes = NSH_NODE_N_NEXT, .next_nodes = { #define _(s,n) [NSH_NODE_NEXT_##s] = n, foreach_nsh_node_next #undef _ }, };