diff options
Diffstat (limited to 'src/plugins/l2e/l2e_node.c')
| -rw-r--r-- | src/plugins/l2e/l2e_node.c | 283 |
1 files changed, 0 insertions, 283 deletions
diff --git a/src/plugins/l2e/l2e_node.c b/src/plugins/l2e/l2e_node.c deleted file mode 100644 index 71c9b4bc6af..00000000000 --- a/src/plugins/l2e/l2e_node.c +++ /dev/null @@ -1,283 +0,0 @@ -/* - * l2e_node.c : l2 emulation node - * - * Copyright (c) 2019 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 <plugins/l2e/l2e.h> -#include <vnet/l2/l2_input.h> -#include <vnet/l2/feat_bitmap.h> - -#define foreach_l2_emulation \ - _(IP4, "Extract IPv4") \ - _(IP6, "Extract IPv6") - -typedef enum -{ -#define _(sym,str) L2_EMULATION_ERROR_##sym, - foreach_l2_emulation -#undef _ - L2_EMULATION_N_ERROR, -} l2_emulation_error_t; - -static char *l2_emulation_error_strings[] = { -#define _(sym,string) string, - foreach_l2_emulation -#undef _ -}; - -typedef enum -{ -#define _(sym,str) L2_EMULATION_NEXT_##sym, - foreach_l2_emulation -#undef _ - L2_EMULATION_N_NEXT, -} l2_emulation_next_t; - -/* packet trace format function */ -static u8 * -format_l2_emulation_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 *); - l2_emulation_trace_t *t = va_arg (*args, l2_emulation_trace_t *); - - s = format (s, "l2-emulation: %s", (t->extracted ? "yes" : "no")); - - return s; -} - -VLIB_NODE_FN (l2_emulation_node) (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame) -{ - l2_emulation_main_t *em = &l2_emulation_main; - u32 n_left_from, *from, *to_next; - l2_emulation_next_t next_index; - u32 ip4_hits = 0; - u32 ip6_hits = 0; - - next_index = 0; - n_left_from = frame->n_vectors; - from = vlib_frame_vector_args (frame); - - 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 *b0, *b1; - u32 sw_if_index0, sw_if_index1; - u16 ether_type0, ether_type1; - u32 next0 = ~0, next1 = ~0; - u8 l2_len0, l2_len1; - u32 bi0, bi1; - u8 *h0, *h1; - - bi0 = to_next[0] = from[0]; - bi1 = to_next[1] = from[1]; - - from += 2; - n_left_from -= 2; - to_next += 2; - n_left_to_next -= 2; - - b0 = vlib_get_buffer (vm, bi0); - b1 = vlib_get_buffer (vm, bi1); - l2_len0 = vnet_buffer (b0)->l2.l2_len; - l2_len1 = vnet_buffer (b1)->l2.l2_len; - - h0 = vlib_buffer_get_current (b0); - h1 = vlib_buffer_get_current (b1); - - ether_type0 = clib_net_to_host_u16 (*(u16 *) (h0 + l2_len0 - 2)); - ether_type1 = clib_net_to_host_u16 (*(u16 *) (h1 + l2_len1 - 2)); - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; - sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX]; - - /* - * only extract unicast - */ - if (PREDICT_TRUE (!(h0[0] & 0x1))) - { - switch (ether_type0) - { - case ETHERNET_TYPE_IP4: - ASSERT (em->l2_emulations[sw_if_index0].enabled); - ++ip4_hits; - next0 = L2_EMULATION_NEXT_IP4; - vlib_buffer_advance (b0, l2_len0); - break; - case ETHERNET_TYPE_IP6: - ASSERT (em->l2_emulations[sw_if_index0].enabled); - ++ip6_hits; - next0 = L2_EMULATION_NEXT_IP6; - vlib_buffer_advance (b0, l2_len0); - default: - break; - } - } - if (PREDICT_TRUE (!(h1[0] & 0x1))) - { - switch (ether_type1) - { - case ETHERNET_TYPE_IP4: - ASSERT (em->l2_emulations[sw_if_index1].enabled); - ++ip4_hits; - next1 = L2_EMULATION_NEXT_IP4; - vlib_buffer_advance (b1, l2_len1); - break; - case ETHERNET_TYPE_IP6: - ASSERT (em->l2_emulations[sw_if_index1].enabled); - ++ip6_hits; - next1 = L2_EMULATION_NEXT_IP6; - vlib_buffer_advance (b1, l2_len1); - default: - break; - } - } - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) - && (b0->flags & VLIB_BUFFER_IS_TRACED))) - { - l2_emulation_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - t->extracted = (next0 != ~0); - } - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) - && (b1->flags & VLIB_BUFFER_IS_TRACED))) - { - l2_emulation_trace_t *t = - vlib_add_trace (vm, node, b1, sizeof (*t)); - t->extracted = (next1 != ~0); - } - - /* Determine the next node and remove ourself from bitmap */ - if (PREDICT_TRUE (next0 == ~0)) - next0 = vnet_l2_feature_next (b0, em->l2_input_feat_next, - L2INPUT_FEAT_L2_EMULATION); - - /* Determine the next node and remove ourself from bitmap */ - if (PREDICT_TRUE (next1 == ~0)) - next1 = vnet_l2_feature_next (b1, em->l2_input_feat_next, - L2INPUT_FEAT_L2_EMULATION); - - 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) - { - vlib_buffer_t *b0; - u32 sw_if_index0; - u16 ether_type0; - u32 next0 = ~0; - u8 l2_len0; - u32 bi0; - u8 *h0; - - 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); - l2_len0 = vnet_buffer (b0)->l2.l2_len; - - h0 = vlib_buffer_get_current (b0); - ether_type0 = clib_net_to_host_u16 (*(u16 *) (h0 + l2_len0 - 2)); - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; - - /* - * only extract unicast - */ - if (PREDICT_TRUE (!(h0[0] & 0x1))) - { - switch (ether_type0) - { - case ETHERNET_TYPE_IP4: - ASSERT (em->l2_emulations[sw_if_index0].enabled); - ++ip4_hits; - next0 = L2_EMULATION_NEXT_IP4; - vlib_buffer_advance (b0, l2_len0); - break; - case ETHERNET_TYPE_IP6: - ASSERT (em->l2_emulations[sw_if_index0].enabled); - ++ip6_hits; - next0 = L2_EMULATION_NEXT_IP6; - vlib_buffer_advance (b0, l2_len0); - default: - break; - } - } - - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) - && (b0->flags & VLIB_BUFFER_IS_TRACED))) - { - l2_emulation_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - t->extracted = (next0 != ~0); - } - - /* Determine the next node and remove ourself from bitmap */ - if (PREDICT_TRUE (next0 == ~0)) - next0 = vnet_l2_feature_next (b0, em->l2_input_feat_next, - L2INPUT_FEAT_L2_EMULATION); - - /* 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); - } - - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - } - - vlib_node_increment_counter (vm, node->node_index, - L2_EMULATION_ERROR_IP4, ip4_hits); - vlib_node_increment_counter (vm, node->node_index, - L2_EMULATION_ERROR_IP6, ip6_hits); - - return frame->n_vectors; -} - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (l2_emulation_node) = { - .name = "l2-emulation", - .vector_size = sizeof (u32), - .format_trace = format_l2_emulation_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = ARRAY_LEN(l2_emulation_error_strings), - .error_strings = l2_emulation_error_strings, - - .n_next_nodes = L2_EMULATION_N_NEXT, - - /* edit / add dispositions here */ - .next_nodes = { - [L2_EMULATION_NEXT_IP4] = "ip4-input", - [L2_EMULATION_NEXT_IP6] = "ip6-input", - }, -}; -/* *INDENT-ON* */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |