diff options
Diffstat (limited to 'vnet/vnet/mpls-gre/node.c')
| -rw-r--r-- | vnet/vnet/mpls-gre/node.c | 363 |
1 files changed, 0 insertions, 363 deletions
diff --git a/vnet/vnet/mpls-gre/node.c b/vnet/vnet/mpls-gre/node.c deleted file mode 100644 index 474e2e2a..00000000 --- a/vnet/vnet/mpls-gre/node.c +++ /dev/null @@ -1,363 +0,0 @@ -/* - * node.c: mpls-o-gre decap processing - * - * Copyright (c) 2012-2014 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 <vlib/vlib.h> -#include <vnet/pg/pg.h> -#include <vnet/mpls-gre/mpls.h> - -typedef struct { - u32 next_index; - u32 decap_index; - u32 tx_fib_index; - u32 label_host_byte_order; -} mpls_rx_trace_t; - -u8 * format_mpls_rx_trace (u8 * s, va_list * args) -{ - CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); - CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); - mpls_rx_trace_t * t = va_arg (*args, mpls_rx_trace_t *); - char * next_name; - - next_name = "BUG!"; - -#define _(a,b) if (t->next_index == MPLS_INPUT_NEXT_##a) next_name = b; - foreach_mpls_input_next; -#undef _ - - s = format (s, "MPLS: next %s, lookup fib index %d, decap index %d\n", - next_name, t->next_index, t->tx_fib_index, t->decap_index); - if (t->decap_index != ~0) - { - s = format (s, " label %d", - vnet_mpls_uc_get_label(t->label_host_byte_order)); - } - return s; -} - -vlib_node_registration_t mpls_input_node; - -typedef struct { - u32 last_label; - u32 last_inner_fib_index; - u32 last_outer_fib_index; - mpls_main_t * mpls_main; -} mpls_input_runtime_t; - -static inline uword -mpls_input_inline (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame, int is_mpls_o_gre) -{ - u32 n_left_from, next_index, * from, * to_next; - ip4_main_t * im = &ip4_main; - from = vlib_frame_vector_args (from_frame); - n_left_from = from_frame->n_vectors; - mpls_input_runtime_t * rt; - mpls_main_t * mm; - - rt = vlib_node_get_runtime_data (vm, mpls_input_node.index); - mm = rt->mpls_main; - /* - * Force an initial lookup every time, in case the control-plane - * changed the label->FIB mapping. - */ - rt->last_label = ~0; - - 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); - -#if 0 - while (n_left_from >= 4 && n_left_to_next >= 2) - { - u32 bi0, bi1; - vlib_buffer_t * b0, * b1; - mpls_unicast_header_t * h0, * h1; - int li0, li1; - u64 key0, key1; - u32 label0, label1; - u32 next0, next1; - uword * p0, * p1; - u32 fib_index0, fib_index1; - - /* 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_to_next -= 2; - n_left_from -= 2; - - b0 = vlib_get_buffer (vm, bi0); - b1 = vlib_get_buffer (vm, bi1); - - /* $$$$$ dual loop me */ - - vlib_buffer_advance (b0, sizeof (*h0)); - vlib_buffer_advance (b1, sizeof (*h1)); - - vlib_validate_buffer_enqueue_x2 (vm, node, next_index, - to_next, n_left_to_next, - bi0, bi1, next0, next1); - } - -#endif - - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 bi0; - vlib_buffer_t * b0; - mpls_unicast_header_t * h0; - u32 label0; - u32 next0; - u64 key0; - uword * p0; - u32 rx_fib_index0; - mpls_decap_t *d0; - - bi0 = from[0]; - to_next[0] = bi0; - from += 1; - to_next += 1; - n_left_from -= 1; - n_left_to_next -= 1; - - b0 = vlib_get_buffer (vm, bi0); - h0 = vlib_buffer_get_current (b0); - - if (is_mpls_o_gre) - { - rx_fib_index0 = vec_elt (im->fib_index_by_sw_if_index, - vnet_buffer(b0)->sw_if_index[VLIB_RX]); - } - else - { -#if 0 - /* If separate RX numbering spaces are required... */ - rx_fib_index0 = vec_elt (mm->fib_index_by_sw_if_index, - vnet_buffer(b0)->sw_if_index[VLIB_RX]); -#endif - rx_fib_index0 = 0; - } - - next0 = ~0; - d0 = 0; - - /* - * Expect the control-plane team to squeal like pigs. - * If they don't program a decap label entry for each - * and every label in the stack, packets go into the trash... - */ - - do - { - label0 = clib_net_to_host_u32 (h0->label_exp_s_ttl); - /* TTL expired? */ - if (PREDICT_FALSE(vnet_mpls_uc_get_ttl (label0) == 0)) - { - next0 = MPLS_INPUT_NEXT_DROP; - b0->error = node->errors[MPLS_ERROR_TTL_EXPIRED]; - break; - } - - key0 = ((u64)rx_fib_index0<<32) - | ((u64)vnet_mpls_uc_get_label (label0)<<12) - | ((u64)vnet_mpls_uc_get_s (label0)<<8); - - /* - * The architecture crew claims that we won't need - * separate ip4, ip6, mpls-o-ethernet label numbering - * spaces. Use the low 8 key bits as a discriminator. - */ - - p0 = hash_get (mm->mpls_decap_by_rx_fib_and_label, key0); - if (p0 == 0) - { - next0 = MPLS_INPUT_NEXT_DROP; - b0->error = node->errors[MPLS_ERROR_BAD_LABEL]; - break; - } - d0 = pool_elt_at_index (mm->decaps, p0[0]); - next0 = d0->next_index; - vnet_buffer(b0)->sw_if_index[VLIB_TX] = d0->tx_fib_index; - vlib_buffer_advance (b0, sizeof (*h0)); - h0 = vlib_buffer_get_current (b0); - } while (!vnet_mpls_uc_get_s(label0)); - - if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED)) - { - mpls_rx_trace_t *tr = vlib_add_trace (vm, node, - b0, sizeof (*tr)); - tr->next_index = next0; - tr->decap_index = d0 ? d0 - mm->decaps : ~0; - tr->tx_fib_index = vnet_buffer(b0)->sw_if_index[VLIB_TX]; - tr->label_host_byte_order = label0; - } - - 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); - } - vlib_node_increment_counter (vm, mpls_input_node.index, - MPLS_ERROR_PKTS_DECAP, from_frame->n_vectors); - return from_frame->n_vectors; -} - -static uword -mpls_input (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame) -{ - return mpls_input_inline (vm, node, from_frame, 1 /* is mpls-o-gre */); -} - -static char * mpls_error_strings[] = { -#define mpls_error(n,s) s, -#include "error.def" -#undef mpls_error -}; - -VLIB_REGISTER_NODE (mpls_input_node) = { - .function = mpls_input, - .name = "mpls-gre-input", - /* Takes a vector of packets. */ - .vector_size = sizeof (u32), - - .runtime_data_bytes = sizeof(mpls_input_runtime_t), - - .n_errors = MPLS_N_ERROR, - .error_strings = mpls_error_strings, - - .n_next_nodes = MPLS_INPUT_N_NEXT, - .next_nodes = { -#define _(s,n) [MPLS_INPUT_NEXT_##s] = n, - foreach_mpls_input_next -#undef _ - }, - - .format_buffer = format_mpls_gre_header_with_length, - .format_trace = format_mpls_rx_trace, - .unformat_buffer = unformat_mpls_gre_header, -}; - -VLIB_NODE_FUNCTION_MULTIARCH (mpls_input_node, mpls_input) - -static uword -mpls_ethernet_input (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame) -{ - return mpls_input_inline (vm, node, from_frame, 0 /* is mpls-o-gre */); -} - - -VLIB_REGISTER_NODE (mpls_ethernet_input_node) = { - .function = mpls_ethernet_input, - .name = "mpls-ethernet-input", - /* Takes a vector of packets. */ - .vector_size = sizeof (u32), - - .runtime_data_bytes = sizeof(mpls_input_runtime_t), - - .n_errors = MPLS_N_ERROR, - .error_strings = mpls_error_strings, - - .n_next_nodes = MPLS_INPUT_N_NEXT, - .next_nodes = { -#define _(s,n) [MPLS_INPUT_NEXT_##s] = n, - foreach_mpls_input_next -#undef _ - }, - - .format_buffer = format_mpls_eth_header_with_length, - .format_trace = format_mpls_rx_trace, - .unformat_buffer = unformat_mpls_gre_header, -}; - -VLIB_NODE_FUNCTION_MULTIARCH (mpls_ethernet_input_node, mpls_ethernet_input) - -static void -mpls_setup_nodes (vlib_main_t * vm) -{ - vlib_node_t * n = vlib_get_node (vm, mpls_input_node.index); - pg_node_t * pn = pg_get_node (mpls_input_node.index); - mpls_input_runtime_t * rt; - - n->format_buffer = format_mpls_gre_header_with_length; - n->unformat_buffer = unformat_mpls_gre_header; - pn->unformat_edit = unformat_pg_mpls_header; - - rt = vlib_node_get_runtime_data (vm, mpls_input_node.index); - rt->last_label = (u32) ~0; - rt->last_inner_fib_index = 0; - rt->last_outer_fib_index = 0; - rt->mpls_main = &mpls_main; - - n = vlib_get_node (vm, mpls_ethernet_input_node.index); - - n->format_buffer = format_mpls_eth_header_with_length; - - n->unformat_buffer = 0; /* unformat_mpls_ethernet_header; */ - - rt = vlib_node_get_runtime_data (vm, mpls_ethernet_input_node.index); - rt->last_label = (u32) ~0; - rt->last_inner_fib_index = 0; - rt->last_outer_fib_index = 0; - rt->mpls_main = &mpls_main; - - ethernet_register_input_type (vm, ETHERNET_TYPE_MPLS_UNICAST, - mpls_ethernet_input_node.index); -} - -static clib_error_t * mpls_input_init (vlib_main_t * vm) -{ - clib_error_t * error; - - error = vlib_call_init_function (vm, mpls_init); - if (error) - clib_error_report (error); - - mpls_setup_nodes (vm); - - return 0; -} - -VLIB_INIT_FUNCTION (mpls_input_init); |