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-rw-r--r--sample-plugin/sample/node.c268
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diff --git a/sample-plugin/sample/node.c b/sample-plugin/sample/node.c
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index 9f8ddc16db5..00000000000
--- a/sample-plugin/sample/node.c
+++ /dev/null
@@ -1,268 +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.
- */
-#include <vlib/vlib.h>
-#include <vnet/vnet.h>
-#include <vnet/pg/pg.h>
-#include <vppinfra/error.h>
-#include <sample/sample.h>
-
-typedef struct {
- u32 next_index;
- u32 sw_if_index;
-} sample_trace_t;
-
-/* packet trace format function */
-static u8 * format_sample_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 *);
- sample_trace_t * t = va_arg (*args, sample_trace_t *);
-
- s = format (s, "SAMPLE: sw_if_index %d, next index %d",
- t->sw_if_index, t->next_index);
- return s;
-}
-
-vlib_node_registration_t sample_node;
-
-#define foreach_sample_error \
-_(SWAPPED, "Mac swap packets processed")
-
-typedef enum {
-#define _(sym,str) SAMPLE_ERROR_##sym,
- foreach_sample_error
-#undef _
- SAMPLE_N_ERROR,
-} sample_error_t;
-
-static char * sample_error_strings[] = {
-#define _(sym,string) string,
- foreach_sample_error
-#undef _
-};
-
-typedef enum {
- SAMPLE_NEXT_INTERFACE_OUTPUT,
- SAMPLE_N_NEXT,
-} sample_next_t;
-
-#define foreach_mac_address_offset \
-_(0) \
-_(1) \
-_(2) \
-_(3) \
-_(4) \
-_(5)
-
-static uword
-sample_node_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- u32 n_left_from, * from, * to_next;
- sample_next_t next_index;
- u32 pkts_swapped = 0;
-
- from = vlib_frame_vector_args (frame);
- n_left_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 next0 = SAMPLE_NEXT_INTERFACE_OUTPUT;
- u32 next1 = SAMPLE_NEXT_INTERFACE_OUTPUT;
- u32 sw_if_index0, sw_if_index1;
- u8 tmp0[6], tmp1[6];
- ethernet_header_t *en0, *en1;
- u32 bi0, bi1;
- vlib_buffer_t * b0, * b1;
-
- /* 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, CLIB_CACHE_LINE_BYTES, STORE);
- CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, STORE);
- }
-
- /* speculatively enqueue b0 and b1 to the current next frame */
- to_next[0] = bi0 = from[0];
- to_next[1] = bi1 = from[1];
- from += 2;
- to_next += 2;
- n_left_from -= 2;
- n_left_to_next -= 2;
-
- b0 = vlib_get_buffer (vm, bi0);
- b1 = vlib_get_buffer (vm, bi1);
-
- ASSERT (b0->current_data == 0);
- ASSERT (b1->current_data == 0);
-
- en0 = vlib_buffer_get_current (b0);
- en1 = vlib_buffer_get_current (b1);
-
- /* This is not the fastest way to swap src + dst mac addresses */
-#define _(a) tmp0[a] = en0->src_address[a];
- foreach_mac_address_offset;
-#undef _
-#define _(a) en0->src_address[a] = en0->dst_address[a];
- foreach_mac_address_offset;
-#undef _
-#define _(a) en0->dst_address[a] = tmp0[a];
- foreach_mac_address_offset;
-#undef _
-
-#define _(a) tmp1[a] = en1->src_address[a];
- foreach_mac_address_offset;
-#undef _
-#define _(a) en1->src_address[a] = en1->dst_address[a];
- foreach_mac_address_offset;
-#undef _
-#define _(a) en1->dst_address[a] = tmp1[a];
- foreach_mac_address_offset;
-#undef _
-
-
-
- sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
- sw_if_index1 = vnet_buffer(b1)->sw_if_index[VLIB_RX];
-
- /* Send pkt back out the RX interface */
- vnet_buffer(b0)->sw_if_index[VLIB_TX] = sw_if_index0;
- vnet_buffer(b1)->sw_if_index[VLIB_TX] = sw_if_index1;
-
- pkts_swapped += 2;
-
- if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)))
- {
- if (b0->flags & VLIB_BUFFER_IS_TRACED)
- {
- sample_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = sw_if_index0;
- t->next_index = next0;
- }
- if (b1->flags & VLIB_BUFFER_IS_TRACED)
- {
- sample_trace_t *t =
- vlib_add_trace (vm, node, b1, sizeof (*t));
- t->sw_if_index = sw_if_index1;
- t->next_index = next1;
- }
- }
-
- /* verify speculative enqueues, maybe switch current next frame */
- 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;
- vlib_buffer_t * b0;
- u32 next0 = SAMPLE_NEXT_INTERFACE_OUTPUT;
- u32 sw_if_index0;
- u8 tmp0[6];
- ethernet_header_t *en0;
-
- /* speculatively enqueue b0 to the current next frame */
- 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);
- /*
- * Direct from the driver, we should be at offset 0
- * aka at &b0->data[0]
- */
- ASSERT (b0->current_data == 0);
-
- en0 = vlib_buffer_get_current (b0);
-
- /* This is not the fastest way to swap src + dst mac addresses */
-#define _(a) tmp0[a] = en0->src_address[a];
- foreach_mac_address_offset;
-#undef _
-#define _(a) en0->src_address[a] = en0->dst_address[a];
- foreach_mac_address_offset;
-#undef _
-#define _(a) en0->dst_address[a] = tmp0[a];
- foreach_mac_address_offset;
-#undef _
-
- sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
-
- /* Send pkt back out the RX interface */
- vnet_buffer(b0)->sw_if_index[VLIB_TX] = sw_if_index0;
-
- if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b0->flags & VLIB_BUFFER_IS_TRACED))) {
- sample_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = sw_if_index0;
- t->next_index = next0;
- }
-
- pkts_swapped += 1;
-
- /* 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, sample_node.index,
- SAMPLE_ERROR_SWAPPED, pkts_swapped);
- return frame->n_vectors;
-}
-
-VLIB_REGISTER_NODE (sample_node) = {
- .function = sample_node_fn,
- .name = "sample",
- .vector_size = sizeof (u32),
- .format_trace = format_sample_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
-
- .n_errors = ARRAY_LEN(sample_error_strings),
- .error_strings = sample_error_strings,
-
- .n_next_nodes = SAMPLE_N_NEXT,
-
- /* edit / add dispositions here */
- .next_nodes = {
- [SAMPLE_NEXT_INTERFACE_OUTPUT] = "interface-output",
- },
-};