+++ /dev/null
-/*
- * 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.
- */
-/*
- * interface_output.c: interface output 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/vnet.h>
-#include <vnet/feature/feature.h>
-
-typedef struct
-{
- u32 sw_if_index;
- u8 data[128 - sizeof (u32)];
-}
-interface_output_trace_t;
-
-u8 *
-format_vnet_interface_output_trace (u8 * s, va_list * va)
-{
- CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
- vlib_node_t *node = va_arg (*va, vlib_node_t *);
- interface_output_trace_t *t = va_arg (*va, interface_output_trace_t *);
- vnet_main_t *vnm = vnet_get_main ();
- vnet_sw_interface_t *si;
- uword indent;
-
- if (t->sw_if_index != (u32) ~ 0)
- {
- indent = format_get_indent (s);
-
- if (pool_is_free_index
- (vnm->interface_main.sw_interfaces, t->sw_if_index))
- {
- /* the interface may have been deleted by the time the trace is printed */
- s = format (s, "sw_if_index: %d\n%U%U",
- t->sw_if_index,
- format_white_space, indent,
- node->format_buffer ? node->
- format_buffer : format_hex_bytes, t->data,
- sizeof (t->data));
- }
- else
- {
- si = vnet_get_sw_interface (vnm, t->sw_if_index);
-
- s = format (s, "%U\n%U%U",
- format_vnet_sw_interface_name, vnm, si,
- format_white_space, indent,
- node->format_buffer ? node->
- format_buffer : format_hex_bytes, t->data,
- sizeof (t->data));
- }
- }
- return s;
-}
-
-static void
-vnet_interface_output_trace (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame, uword n_buffers)
-{
- u32 n_left, *from;
-
- n_left = n_buffers;
- from = vlib_frame_args (frame);
-
- while (n_left >= 4)
- {
- u32 bi0, bi1;
- vlib_buffer_t *b0, *b1;
- interface_output_trace_t *t0, *t1;
-
- /* Prefetch next iteration. */
- vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
- vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
-
- bi0 = from[0];
- bi1 = from[1];
-
- b0 = vlib_get_buffer (vm, bi0);
- b1 = vlib_get_buffer (vm, bi1);
-
- if (b0->flags & VLIB_BUFFER_IS_TRACED)
- {
- t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
- t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
- clib_memcpy (t0->data, vlib_buffer_get_current (b0),
- sizeof (t0->data));
- }
- if (b1->flags & VLIB_BUFFER_IS_TRACED)
- {
- t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0]));
- t1->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_TX];
- clib_memcpy (t1->data, vlib_buffer_get_current (b1),
- sizeof (t1->data));
- }
- from += 2;
- n_left -= 2;
- }
-
- while (n_left >= 1)
- {
- u32 bi0;
- vlib_buffer_t *b0;
- interface_output_trace_t *t0;
-
- bi0 = from[0];
-
- b0 = vlib_get_buffer (vm, bi0);
-
- if (b0->flags & VLIB_BUFFER_IS_TRACED)
- {
- t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
- t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
- clib_memcpy (t0->data, vlib_buffer_get_current (b0),
- sizeof (t0->data));
- }
- from += 1;
- n_left -= 1;
- }
-}
-
-static never_inline u32
-slow_path (vlib_main_t * vm,
- u32 bi,
- vlib_buffer_t * b,
- u32 n_left_to_tx, u32 * to_tx, u32 * n_slow_bytes_result)
-{
- /* We've already enqueued a single buffer. */
- u32 n_buffers = 0;
- u32 n_slow_bytes = 0;
-
- while (n_left_to_tx > 0)
- {
- to_tx[0] = bi;
- to_tx += 1;
- n_left_to_tx -= 1;
- n_buffers += 1;
- n_slow_bytes += vlib_buffer_length_in_chain (vm, b);
-
- /* Be grumpy about zero length buffers for benefit of
- driver tx function. */
- ASSERT (b->current_length > 0);
-
- if (!(b->flags & VLIB_BUFFER_NEXT_PRESENT))
- break;
-
- bi = b->next_buffer;
- b = vlib_get_buffer (vm, bi);
- }
-
- /* Ran out of space in next frame trying to enqueue buffers? */
- if (b->flags & VLIB_BUFFER_NEXT_PRESENT)
- return 0;
-
- *n_slow_bytes_result = n_slow_bytes;
- return n_buffers;
-}
-
-/*
- * Increment TX stats. Roll up consecutive increments to the same sw_if_index
- * into one increment.
- */
-static_always_inline void
-incr_output_stats (vnet_main_t * vnm,
- u32 cpu_index,
- u32 length,
- u32 sw_if_index,
- u32 * last_sw_if_index, u32 * n_packets, u32 * n_bytes)
-{
- vnet_interface_main_t *im;
-
- if (PREDICT_TRUE (sw_if_index == *last_sw_if_index))
- {
- *n_packets += 1;
- *n_bytes += length;
- }
- else
- {
- if (PREDICT_TRUE (*last_sw_if_index != ~0))
- {
- im = &vnm->interface_main;
-
- vlib_increment_combined_counter (im->combined_sw_if_counters
- + VNET_INTERFACE_COUNTER_TX,
- cpu_index,
- *last_sw_if_index,
- *n_packets, *n_bytes);
- }
- *last_sw_if_index = sw_if_index;
- *n_packets = 1;
- *n_bytes = length;
- }
-}
-
-
-/* Interface output functions. */
-uword
-vnet_interface_output_node_flatten (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- vnet_main_t *vnm = vnet_get_main ();
- vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
- vnet_sw_interface_t *si;
- vnet_hw_interface_t *hi;
- u32 n_left_to_tx, *from, *from_end, *to_tx;
- u32 n_bytes, n_buffers, n_packets;
- u32 last_sw_if_index;
- u32 cpu_index = vm->cpu_index;
-
- n_buffers = frame->n_vectors;
-
- if (node->flags & VLIB_NODE_FLAG_TRACE)
- vnet_interface_output_trace (vm, node, frame, n_buffers);
-
- from = vlib_frame_args (frame);
-
- if (rt->is_deleted)
- return vlib_error_drop_buffers (vm, node, from,
- /* buffer stride */ 1,
- n_buffers,
- VNET_INTERFACE_OUTPUT_NEXT_DROP,
- node->node_index,
- VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DELETED);
-
- si = vnet_get_sw_interface (vnm, rt->sw_if_index);
- hi = vnet_get_sup_hw_interface (vnm, rt->sw_if_index);
- if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ||
- !(hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
- {
- vlib_simple_counter_main_t *cm;
-
- cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
- VNET_INTERFACE_COUNTER_TX_ERROR);
- vlib_increment_simple_counter (cm, cpu_index,
- rt->sw_if_index, n_buffers);
- return vlib_error_drop_buffers (vm, node, from,
- /* buffer stride */ 1,
- n_buffers,
- VNET_INTERFACE_OUTPUT_NEXT_DROP,
- node->node_index,
- VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DOWN);
- }
-
- from_end = from + n_buffers;
-
- /* Total byte count of all buffers. */
- n_bytes = 0;
- n_packets = 0;
- last_sw_if_index = ~0;
-
- while (from < from_end)
- {
- /* Get new next frame since previous incomplete frame may have less
- than VNET_FRAME_SIZE vectors in it. */
- vlib_get_new_next_frame (vm, node, VNET_INTERFACE_OUTPUT_NEXT_TX,
- to_tx, n_left_to_tx);
-
- while (from + 4 <= from_end && n_left_to_tx >= 2)
- {
- u32 bi0, bi1;
- vlib_buffer_t *b0, *b1;
-
- /* Prefetch next iteration. */
- vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
- vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
-
- bi0 = from[0];
- bi1 = from[1];
- to_tx[0] = bi0;
- to_tx[1] = bi1;
- from += 2;
- to_tx += 2;
- n_left_to_tx -= 2;
-
- b0 = vlib_get_buffer (vm, bi0);
- b1 = vlib_get_buffer (vm, bi1);
-
- /* Be grumpy about zero length buffers for benefit of
- driver tx function. */
- ASSERT (b0->current_length > 0);
- ASSERT (b1->current_length > 0);
-
- if (PREDICT_FALSE
- ((b0->flags | b1->flags) & VLIB_BUFFER_NEXT_PRESENT))
- {
- u32 n_buffers, n_slow_bytes, i;
-
- /* Undo. */
- from -= 2;
- to_tx -= 2;
- n_left_to_tx += 2;
-
- /* Do slow path two times. */
- for (i = 0; i < 2; i++)
- {
- u32 bi = i ? bi1 : bi0;
- vlib_buffer_t *b = i ? b1 : b0;
-
- n_buffers = slow_path (vm, bi, b,
- n_left_to_tx, to_tx, &n_slow_bytes);
-
- /* Not enough room for single packet? */
- if (n_buffers == 0)
- goto put;
-
- from += 1;
- to_tx += n_buffers;
- n_left_to_tx -= n_buffers;
- incr_output_stats (vnm, cpu_index, n_slow_bytes,
- vnet_buffer (b)->sw_if_index[VLIB_TX],
- &last_sw_if_index, &n_packets, &n_bytes);
- }
- }
- else
- {
- incr_output_stats (vnm, cpu_index,
- vlib_buffer_length_in_chain (vm, b0),
- vnet_buffer (b0)->sw_if_index[VLIB_TX],
- &last_sw_if_index, &n_packets, &n_bytes);
- incr_output_stats (vnm, cpu_index,
- vlib_buffer_length_in_chain (vm, b0),
- vnet_buffer (b1)->sw_if_index[VLIB_TX],
- &last_sw_if_index, &n_packets, &n_bytes);
- }
- }
-
- while (from + 1 <= from_end && n_left_to_tx >= 1)
- {
- u32 bi0;
- vlib_buffer_t *b0;
-
- bi0 = from[0];
- to_tx[0] = bi0;
- from += 1;
- to_tx += 1;
- n_left_to_tx -= 1;
-
- b0 = vlib_get_buffer (vm, bi0);
-
- /* Be grumpy about zero length buffers for benefit of
- driver tx function. */
- ASSERT (b0->current_length > 0);
-
- if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_NEXT_PRESENT))
- {
- u32 n_buffers, n_slow_bytes;
-
- /* Undo. */
- from -= 1;
- to_tx -= 1;
- n_left_to_tx += 1;
-
- n_buffers = slow_path (vm, bi0, b0,
- n_left_to_tx, to_tx, &n_slow_bytes);
-
- /* Not enough room for single packet? */
- if (n_buffers == 0)
- goto put;
-
- from += 1;
- to_tx += n_buffers;
- n_left_to_tx -= n_buffers;
- }
- incr_output_stats (vnm, cpu_index,
- vlib_buffer_length_in_chain (vm, b0),
- vnet_buffer (b0)->sw_if_index[VLIB_TX],
- &last_sw_if_index, &n_packets, &n_bytes);
- }
-
- put:
- vlib_put_next_frame (vm, node, VNET_INTERFACE_OUTPUT_NEXT_TX,
- n_left_to_tx);
- }
-
- /* Final update of interface stats. */
- incr_output_stats (vnm, cpu_index, 0, ~0, /* ~0 will flush stats */
- &last_sw_if_index, &n_packets, &n_bytes);
-
- return n_buffers;
-}
-
-VLIB_NODE_FUNCTION_MULTIARCH_CLONE (vnet_interface_output_node_flatten);
-CLIB_MULTIARCH_SELECT_FN (vnet_interface_output_node_flatten);
-
-uword
-vnet_interface_output_node (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
- vnet_main_t *vnm = vnet_get_main ();
- vnet_interface_output_runtime_t *rt = (void *) node->runtime_data;
- vnet_sw_interface_t *si;
- vnet_hw_interface_t *hi;
- u32 n_left_to_tx, *from, *from_end, *to_tx;
- u32 n_bytes, n_buffers, n_packets;
- u32 n_bytes_b0, n_bytes_b1;
- u32 cpu_index = vm->cpu_index;
- vnet_interface_main_t *im = &vnm->interface_main;
- u32 next_index = VNET_INTERFACE_OUTPUT_NEXT_TX;
- u32 current_config_index = ~0;
- u8 arc = im->output_feature_arc_index;
-
- n_buffers = frame->n_vectors;
-
- if (node->flags & VLIB_NODE_FLAG_TRACE)
- vnet_interface_output_trace (vm, node, frame, n_buffers);
-
- from = vlib_frame_args (frame);
-
- if (rt->is_deleted)
- return vlib_error_drop_buffers (vm, node, from,
- /* buffer stride */ 1,
- n_buffers,
- VNET_INTERFACE_OUTPUT_NEXT_DROP,
- node->node_index,
- VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DELETED);
-
- si = vnet_get_sw_interface (vnm, rt->sw_if_index);
- hi = vnet_get_sup_hw_interface (vnm, rt->sw_if_index);
- if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ||
- !(hi->flags & VNET_HW_INTERFACE_FLAG_LINK_UP))
- {
- vlib_simple_counter_main_t *cm;
-
- cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
- VNET_INTERFACE_COUNTER_TX_ERROR);
- vlib_increment_simple_counter (cm, cpu_index,
- rt->sw_if_index, n_buffers);
-
- return vlib_error_drop_buffers (vm, node, from,
- /* buffer stride */ 1,
- n_buffers,
- VNET_INTERFACE_OUTPUT_NEXT_DROP,
- node->node_index,
- VNET_INTERFACE_OUTPUT_ERROR_INTERFACE_DOWN);
- }
-
- from_end = from + n_buffers;
-
- /* Total byte count of all buffers. */
- n_bytes = 0;
- n_packets = 0;
-
- /* interface-output feature arc handling */
- if (PREDICT_FALSE (vnet_have_features (arc, rt->sw_if_index)))
- {
- vnet_feature_config_main_t *fcm;
- fcm = vnet_feature_get_config_main (arc);
- current_config_index = vnet_get_feature_config_index (arc,
- rt->sw_if_index);
- vnet_get_config_data (&fcm->config_main, ¤t_config_index,
- &next_index, 0);
- }
-
- while (from < from_end)
- {
- /* Get new next frame since previous incomplete frame may have less
- than VNET_FRAME_SIZE vectors in it. */
- vlib_get_new_next_frame (vm, node, next_index, to_tx, n_left_to_tx);
-
- while (from + 4 <= from_end && n_left_to_tx >= 2)
- {
- u32 bi0, bi1;
- vlib_buffer_t *b0, *b1;
- u32 tx_swif0, tx_swif1;
-
- /* Prefetch next iteration. */
- vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
- vlib_prefetch_buffer_with_index (vm, from[3], LOAD);
-
- bi0 = from[0];
- bi1 = from[1];
- to_tx[0] = bi0;
- to_tx[1] = bi1;
- from += 2;
- to_tx += 2;
- n_left_to_tx -= 2;
-
- b0 = vlib_get_buffer (vm, bi0);
- b1 = vlib_get_buffer (vm, bi1);
-
- /* Be grumpy about zero length buffers for benefit of
- driver tx function. */
- ASSERT (b0->current_length > 0);
- ASSERT (b1->current_length > 0);
-
- n_bytes_b0 = vlib_buffer_length_in_chain (vm, b0);
- n_bytes_b1 = vlib_buffer_length_in_chain (vm, b1);
- tx_swif0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
- tx_swif1 = vnet_buffer (b1)->sw_if_index[VLIB_TX];
-
- n_bytes += n_bytes_b0 + n_bytes_b1;
- n_packets += 2;
-
- if (PREDICT_FALSE (current_config_index != ~0))
- {
- b0->feature_arc_index = arc;
- b1->feature_arc_index = arc;
- b0->current_config_index = current_config_index;
- b1->current_config_index = current_config_index;
- }
-
- if (PREDICT_FALSE (tx_swif0 != rt->sw_if_index))
- {
- /* update vlan subif tx counts, if required */
- vlib_increment_combined_counter (im->combined_sw_if_counters +
- VNET_INTERFACE_COUNTER_TX,
- cpu_index, tx_swif0, 1,
- n_bytes_b0);
- }
-
- /* update vlan subif tx counts, if required */
- if (PREDICT_FALSE (tx_swif1 != rt->sw_if_index))
- {
-
- vlib_increment_combined_counter (im->combined_sw_if_counters +
- VNET_INTERFACE_COUNTER_TX,
- cpu_index, tx_swif1, 1,
- n_bytes_b1);
- }
- }
-
- while (from + 1 <= from_end && n_left_to_tx >= 1)
- {
- u32 bi0;
- vlib_buffer_t *b0;
- u32 tx_swif0;
-
- bi0 = from[0];
- to_tx[0] = bi0;
- from += 1;
- to_tx += 1;
- n_left_to_tx -= 1;
-
- b0 = vlib_get_buffer (vm, bi0);
-
- /* Be grumpy about zero length buffers for benefit of
- driver tx function. */
- ASSERT (b0->current_length > 0);
-
- n_bytes_b0 = vlib_buffer_length_in_chain (vm, b0);
- tx_swif0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
- n_bytes += n_bytes_b0;
- n_packets += 1;
-
- if (PREDICT_FALSE (current_config_index != ~0))
- {
- b0->feature_arc_index = arc;
- b0->current_config_index = current_config_index;
- }
-
- if (PREDICT_FALSE (tx_swif0 != rt->sw_if_index))
- {
-
- vlib_increment_combined_counter (im->combined_sw_if_counters +
- VNET_INTERFACE_COUNTER_TX,
- cpu_index, tx_swif0, 1,
- n_bytes_b0);
- }
- }
-
- vlib_put_next_frame (vm, node, next_index, n_left_to_tx);
- }
-
- /* Update main interface stats. */
- vlib_increment_combined_counter (im->combined_sw_if_counters
- + VNET_INTERFACE_COUNTER_TX,
- cpu_index,
- rt->sw_if_index, n_packets, n_bytes);
- return n_buffers;
-}
-
-VLIB_NODE_FUNCTION_MULTIARCH_CLONE (vnet_interface_output_node);
-CLIB_MULTIARCH_SELECT_FN (vnet_interface_output_node);
-
-/* Use buffer's sw_if_index[VNET_TX] to choose output interface. */
-static uword
-vnet_per_buffer_interface_output (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame)
-{
- vnet_main_t *vnm = vnet_get_main ();
- u32 n_left_to_next, *from, *to_next;
- u32 n_left_from, next_index;
-
- n_left_from = frame->n_vectors;
-
- from = vlib_frame_args (frame);
- next_index = node->cached_next_index;
-
- while (n_left_from > 0)
- {
- 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, next0, next1;
- vlib_buffer_t *b0, *b1;
- vnet_hw_interface_t *hi0, *hi1;
-
- /* Prefetch next iteration. */
- vlib_prefetch_buffer_with_index (vm, from[2], LOAD);
- vlib_prefetch_buffer_with_index (vm, from[3], 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);
-
- hi0 =
- vnet_get_sup_hw_interface (vnm,
- vnet_buffer (b0)->sw_if_index
- [VLIB_TX]);
- hi1 =
- vnet_get_sup_hw_interface (vnm,
- vnet_buffer (b1)->sw_if_index
- [VLIB_TX]);
-
- next0 = hi0->hw_if_index;
- next1 = hi1->hw_if_index;
-
- 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, next0;
- vlib_buffer_t *b0;
- vnet_hw_interface_t *hi0;
-
- bi0 = from[0];
- to_next[0] = bi0;
- from += 1;
- to_next += 1;
- n_left_to_next -= 1;
- n_left_from -= 1;
-
- b0 = vlib_get_buffer (vm, bi0);
-
- hi0 =
- vnet_get_sup_hw_interface (vnm,
- vnet_buffer (b0)->sw_if_index
- [VLIB_TX]);
-
- next0 = hi0->hw_if_index;
-
- 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 frame->n_vectors;
-}
-
-always_inline u32
-counter_index (vlib_main_t * vm, vlib_error_t e)
-{
- vlib_node_t *n;
- u32 ci, ni;
-
- ni = vlib_error_get_node (e);
- n = vlib_get_node (vm, ni);
-
- ci = vlib_error_get_code (e);
- ASSERT (ci < n->n_errors);
-
- ci += n->error_heap_index;
-
- return ci;
-}
-
-static u8 *
-format_vnet_error_trace (u8 * s, va_list * va)
-{
- vlib_main_t *vm = va_arg (*va, vlib_main_t *);
- CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
- vlib_error_t *e = va_arg (*va, vlib_error_t *);
- vlib_node_t *error_node;
- vlib_error_main_t *em = &vm->error_main;
- u32 i;
-
- error_node = vlib_get_node (vm, vlib_error_get_node (e[0]));
- i = counter_index (vm, e[0]);
- s = format (s, "%v: %s", error_node->name, em->error_strings_heap[i]);
-
- return s;
-}
-
-static void
-trace_errors_with_buffers (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
- u32 n_left, *buffers;
-
- buffers = vlib_frame_vector_args (frame);
- n_left = frame->n_vectors;
-
- while (n_left >= 4)
- {
- u32 bi0, bi1;
- vlib_buffer_t *b0, *b1;
- vlib_error_t *t0, *t1;
-
- /* Prefetch next iteration. */
- vlib_prefetch_buffer_with_index (vm, buffers[2], LOAD);
- vlib_prefetch_buffer_with_index (vm, buffers[3], LOAD);
-
- bi0 = buffers[0];
- bi1 = buffers[1];
-
- b0 = vlib_get_buffer (vm, bi0);
- b1 = vlib_get_buffer (vm, bi1);
-
- if (b0->flags & VLIB_BUFFER_IS_TRACED)
- {
- t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
- t0[0] = b0->error;
- }
- if (b1->flags & VLIB_BUFFER_IS_TRACED)
- {
- t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0]));
- t1[0] = b1->error;
- }
- buffers += 2;
- n_left -= 2;
- }
-
- while (n_left >= 1)
- {
- u32 bi0;
- vlib_buffer_t *b0;
- vlib_error_t *t0;
-
- bi0 = buffers[0];
-
- b0 = vlib_get_buffer (vm, bi0);
-
- if (b0->flags & VLIB_BUFFER_IS_TRACED)
- {
- t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
- t0[0] = b0->error;
- }
- buffers += 1;
- n_left -= 1;
- }
-}
-
-static u8 *
-validate_error (vlib_main_t * vm, vlib_error_t * e, u32 index)
-{
- uword node_index = vlib_error_get_node (e[0]);
- uword code = vlib_error_get_code (e[0]);
- vlib_node_t *n;
-
- if (node_index >= vec_len (vm->node_main.nodes))
- return format (0, "[%d], node index out of range 0x%x, error 0x%x",
- index, node_index, e[0]);
-
- n = vlib_get_node (vm, node_index);
- if (code >= n->n_errors)
- return format (0, "[%d], code %d out of range for node %v",
- index, code, n->name);
-
- return 0;
-}
-
-static u8 *
-validate_error_frame (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * f)
-{
- u32 *buffers = vlib_frame_args (f);
- vlib_buffer_t *b;
- u8 *msg = 0;
- uword i;
-
- for (i = 0; i < f->n_vectors; i++)
- {
- b = vlib_get_buffer (vm, buffers[i]);
- msg = validate_error (vm, &b->error, i);
- if (msg)
- return msg;
- }
-
- return msg;
-}
-
-typedef enum
-{
- VNET_ERROR_DISPOSITION_DROP,
- VNET_ERROR_DISPOSITION_PUNT,
- VNET_ERROR_N_DISPOSITION,
-} vnet_error_disposition_t;
-
-always_inline void
-do_packet (vlib_main_t * vm, vlib_error_t a)
-{
- vlib_error_main_t *em = &vm->error_main;
- u32 i = counter_index (vm, a);
- em->counters[i] += 1;
- vlib_error_elog_count (vm, i, 1);
-}
-
-static_always_inline uword
-process_drop_punt (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * frame, vnet_error_disposition_t disposition)
-{
- vnet_main_t *vnm = vnet_get_main ();
- vlib_error_main_t *em = &vm->error_main;
- u32 *buffers, *first_buffer;
- vlib_error_t current_error;
- u32 current_counter_index, n_errors_left;
- u32 current_sw_if_index, n_errors_current_sw_if_index;
- u64 current_counter;
- vlib_simple_counter_main_t *cm;
- u32 cpu_index = vm->cpu_index;
-
- static vlib_error_t memory[VNET_ERROR_N_DISPOSITION];
- static char memory_init[VNET_ERROR_N_DISPOSITION];
-
- buffers = vlib_frame_args (frame);
- first_buffer = buffers;
-
- {
- vlib_buffer_t *b = vlib_get_buffer (vm, first_buffer[0]);
-
- if (!memory_init[disposition])
- {
- memory_init[disposition] = 1;
- memory[disposition] = b->error;
- }
-
- current_sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
- n_errors_current_sw_if_index = 0;
- }
-
- current_error = memory[disposition];
- current_counter_index = counter_index (vm, memory[disposition]);
- current_counter = em->counters[current_counter_index];
-
- if (node->flags & VLIB_NODE_FLAG_TRACE)
- trace_errors_with_buffers (vm, node, frame);
-
- n_errors_left = frame->n_vectors;
- cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
- (disposition == VNET_ERROR_DISPOSITION_PUNT
- ? VNET_INTERFACE_COUNTER_PUNT
- : VNET_INTERFACE_COUNTER_DROP));
-
- while (n_errors_left >= 2)
- {
- vlib_buffer_t *b0, *b1;
- vnet_sw_interface_t *sw_if0, *sw_if1;
- vlib_error_t e0, e1;
- u32 bi0, bi1;
- u32 sw_if_index0, sw_if_index1;
-
- bi0 = buffers[0];
- bi1 = buffers[1];
-
- buffers += 2;
- n_errors_left -= 2;
-
- b0 = vlib_get_buffer (vm, bi0);
- b1 = vlib_get_buffer (vm, bi1);
-
- e0 = b0->error;
- e1 = b1->error;
-
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
- sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
-
- /* Speculate that sw_if_index == sw_if_index[01]. */
- n_errors_current_sw_if_index += 2;
-
- /* Speculatively assume all 2 (node, code) pairs are equal
- to current (node, code). */
- current_counter += 2;
-
- if (PREDICT_FALSE (e0 != current_error
- || e1 != current_error
- || sw_if_index0 != current_sw_if_index
- || sw_if_index1 != current_sw_if_index))
- {
- current_counter -= 2;
- n_errors_current_sw_if_index -= 2;
-
- vlib_increment_simple_counter (cm, cpu_index, sw_if_index0, 1);
- vlib_increment_simple_counter (cm, cpu_index, sw_if_index1, 1);
-
- /* Increment super-interface drop/punt counters for
- sub-interfaces. */
- sw_if0 = vnet_get_sw_interface (vnm, sw_if_index0);
- vlib_increment_simple_counter
- (cm, cpu_index, sw_if0->sup_sw_if_index,
- sw_if0->sup_sw_if_index != sw_if_index0);
-
- sw_if1 = vnet_get_sw_interface (vnm, sw_if_index1);
- vlib_increment_simple_counter
- (cm, cpu_index, sw_if1->sup_sw_if_index,
- sw_if1->sup_sw_if_index != sw_if_index1);
-
- em->counters[current_counter_index] = current_counter;
- do_packet (vm, e0);
- do_packet (vm, e1);
-
- /* For 2 repeated errors, change current error. */
- if (e0 == e1 && e1 != current_error)
- {
- current_error = e0;
- current_counter_index = counter_index (vm, e0);
- }
- current_counter = em->counters[current_counter_index];
- }
- }
-
- while (n_errors_left >= 1)
- {
- vlib_buffer_t *b0;
- vnet_sw_interface_t *sw_if0;
- vlib_error_t e0;
- u32 bi0, sw_if_index0;
-
- bi0 = buffers[0];
-
- buffers += 1;
- n_errors_left -= 1;
- current_counter += 1;
-
- b0 = vlib_get_buffer (vm, bi0);
- e0 = b0->error;
-
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
-
- /* Increment drop/punt counters. */
- vlib_increment_simple_counter (cm, cpu_index, sw_if_index0, 1);
-
- /* Increment super-interface drop/punt counters for sub-interfaces. */
- sw_if0 = vnet_get_sw_interface (vnm, sw_if_index0);
- vlib_increment_simple_counter (cm, cpu_index, sw_if0->sup_sw_if_index,
- sw_if0->sup_sw_if_index != sw_if_index0);
-
- if (PREDICT_FALSE (e0 != current_error))
- {
- current_counter -= 1;
-
- vlib_error_elog_count (vm, current_counter_index,
- (current_counter
- - em->counters[current_counter_index]));
-
- em->counters[current_counter_index] = current_counter;
-
- do_packet (vm, e0);
- current_error = e0;
- current_counter_index = counter_index (vm, e0);
- current_counter = em->counters[current_counter_index];
- }
- }
-
- if (n_errors_current_sw_if_index > 0)
- {
- vnet_sw_interface_t *si;
-
- vlib_increment_simple_counter (cm, cpu_index, current_sw_if_index,
- n_errors_current_sw_if_index);
-
- si = vnet_get_sw_interface (vnm, current_sw_if_index);
- if (si->sup_sw_if_index != current_sw_if_index)
- vlib_increment_simple_counter (cm, cpu_index, si->sup_sw_if_index,
- n_errors_current_sw_if_index);
- }
-
- vlib_error_elog_count (vm, current_counter_index,
- (current_counter
- - em->counters[current_counter_index]));
-
- /* Return cached counter. */
- em->counters[current_counter_index] = current_counter;
-
- /* Save memory for next iteration. */
- memory[disposition] = current_error;
-
- if (disposition == VNET_ERROR_DISPOSITION_DROP || !vm->os_punt_frame)
- {
- vlib_buffer_free (vm, first_buffer, frame->n_vectors);
-
- /* If there is no punt function, free the frame as well. */
- if (disposition == VNET_ERROR_DISPOSITION_PUNT && !vm->os_punt_frame)
- vlib_frame_free (vm, node, frame);
- }
- else
- vm->os_punt_frame (vm, node, frame);
-
- return frame->n_vectors;
-}
-
-static inline void
-pcap_drop_trace (vlib_main_t * vm,
- vnet_interface_main_t * im, vlib_frame_t * f)
-{
- u32 *from;
- u32 n_left = f->n_vectors;
- vlib_buffer_t *b0, *p1;
- u32 bi0;
- i16 save_current_data;
- u16 save_current_length;
-
- from = vlib_frame_vector_args (f);
-
- while (n_left > 0)
- {
- if (PREDICT_TRUE (n_left > 1))
- {
- p1 = vlib_get_buffer (vm, from[1]);
- vlib_prefetch_buffer_header (p1, LOAD);
- }
-
- bi0 = from[0];
- b0 = vlib_get_buffer (vm, bi0);
- from++;
- n_left--;
-
- /* See if we're pointedly ignoring this specific error */
- if (im->pcap_drop_filter_hash
- && hash_get (im->pcap_drop_filter_hash, b0->error))
- continue;
-
- /* Trace all drops, or drops received on a specific interface */
- if (im->pcap_sw_if_index == 0 ||
- im->pcap_sw_if_index == vnet_buffer (b0)->sw_if_index[VLIB_RX])
- {
- save_current_data = b0->current_data;
- save_current_length = b0->current_length;
-
- /*
- * Typically, we'll need to rewind the buffer
- */
- if (b0->current_data > 0)
- vlib_buffer_advance (b0, (word) - b0->current_data);
-
- pcap_add_buffer (&im->pcap_main, vm, bi0, 512);
-
- b0->current_data = save_current_data;
- b0->current_length = save_current_length;
- }
- }
-}
-
-void
-vnet_pcap_drop_trace_filter_add_del (u32 error_index, int is_add)
-{
- vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
-
- if (im->pcap_drop_filter_hash == 0)
- im->pcap_drop_filter_hash = hash_create (0, sizeof (uword));
-
- if (is_add)
- hash_set (im->pcap_drop_filter_hash, error_index, 1);
- else
- hash_unset (im->pcap_drop_filter_hash, error_index);
-}
-
-static uword
-process_drop (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
- vnet_interface_main_t *im = &vnet_get_main ()->interface_main;
-
- if (PREDICT_FALSE (im->drop_pcap_enable))
- pcap_drop_trace (vm, im, frame);
-
- return process_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_DROP);
-}
-
-static uword
-process_punt (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
- return process_drop_punt (vm, node, frame, VNET_ERROR_DISPOSITION_PUNT);
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (drop_buffers,static) = {
- .function = process_drop,
- .name = "error-drop",
- .flags = VLIB_NODE_FLAG_IS_DROP,
- .vector_size = sizeof (u32),
- .format_trace = format_vnet_error_trace,
- .validate_frame = validate_error_frame,
-};
-/* *INDENT-ON* */
-
-VLIB_NODE_FUNCTION_MULTIARCH (drop_buffers, process_drop);
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (punt_buffers,static) = {
- .function = process_punt,
- .flags = (VLIB_NODE_FLAG_FRAME_NO_FREE_AFTER_DISPATCH
- | VLIB_NODE_FLAG_IS_PUNT),
- .name = "error-punt",
- .vector_size = sizeof (u32),
- .format_trace = format_vnet_error_trace,
- .validate_frame = validate_error_frame,
-};
-/* *INDENT-ON* */
-
-VLIB_NODE_FUNCTION_MULTIARCH (punt_buffers, process_punt);
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (vnet_per_buffer_interface_output_node,static) = {
- .function = vnet_per_buffer_interface_output,
- .name = "interface-output",
- .vector_size = sizeof (u32),
-};
-/* *INDENT-ON* */
-
-VLIB_NODE_FUNCTION_MULTIARCH (vnet_per_buffer_interface_output_node,
- vnet_per_buffer_interface_output);
-
-static uword
-interface_tx_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
- vlib_frame_t * from_frame)
-{
- vnet_main_t *vnm = vnet_get_main ();
- u32 last_sw_if_index = ~0;
- vlib_frame_t *to_frame = 0;
- vnet_hw_interface_t *hw = 0;
- u32 *from, *to_next = 0;
- u32 n_left_from;
-
- from = vlib_frame_vector_args (from_frame);
- n_left_from = from_frame->n_vectors;
- while (n_left_from > 0)
- {
- u32 bi0;
- vlib_buffer_t *b0;
- u32 sw_if_index0;
-
- bi0 = from[0];
- from++;
- n_left_from--;
- b0 = vlib_get_buffer (vm, bi0);
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
-
- if (PREDICT_FALSE ((last_sw_if_index != sw_if_index0) || to_frame == 0))
- {
- if (to_frame)
- {
- hw = vnet_get_sup_hw_interface (vnm, last_sw_if_index);
- vlib_put_frame_to_node (vm, hw->tx_node_index, to_frame);
- }
- last_sw_if_index = sw_if_index0;
- hw = vnet_get_sup_hw_interface (vnm, sw_if_index0);
- to_frame = vlib_get_frame_to_node (vm, hw->tx_node_index);
- to_next = vlib_frame_vector_args (to_frame);
- }
-
- to_next[0] = bi0;
- to_next++;
- to_frame->n_vectors++;
- }
- vlib_put_frame_to_node (vm, hw->tx_node_index, to_frame);
- return from_frame->n_vectors;
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (interface_tx, static) = {
- .function = interface_tx_node_fn,
- .name = "interface-tx",
- .vector_size = sizeof (u32),
- .n_next_nodes = 1,
- .next_nodes = {
- [0] = "error-drop",
- },
-};
-
-VNET_FEATURE_ARC_INIT (interface_output, static) =
-{
- .arc_name = "interface-output",
- .start_nodes = VNET_FEATURES (0),
- .end_node = "interface-tx",
- .arc_index_ptr = &vnet_main.interface_main.output_feature_arc_index,
-};
-
-VNET_FEATURE_INIT (span_tx, static) = {
- .arc_name = "interface-output",
- .node_name = "span-output",
- .runs_before = VNET_FEATURES ("interface-tx"),
-};
-
-VNET_FEATURE_INIT (interface_tx, static) = {
- .arc_name = "interface-output",
- .node_name = "interface-tx",
- .runs_before = 0,
-};
-/* *INDENT-ON* */
-
-clib_error_t *
-vnet_per_buffer_interface_output_hw_interface_add_del (vnet_main_t * vnm,
- u32 hw_if_index,
- u32 is_create)
-{
- vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
- u32 next_index;
-
- next_index = vlib_node_add_next_with_slot
- (vnm->vlib_main, vnet_per_buffer_interface_output_node.index,
- hi->output_node_index,
- /* next_index */ hw_if_index);
-
- ASSERT (next_index == hw_if_index);
-
- return 0;
-}
-
-VNET_HW_INTERFACE_ADD_DEL_FUNCTION
- (vnet_per_buffer_interface_output_hw_interface_add_del);
-
-static clib_error_t *
-pcap_drop_trace_command_fn (vlib_main_t * vm,
- unformat_input_t * input,
- vlib_cli_command_t * cmd)
-{
- vnet_main_t *vnm = vnet_get_main ();
- vnet_interface_main_t *im = &vnm->interface_main;
- u8 *filename;
- u32 max;
- int matched = 0;
- clib_error_t *error = 0;
-
- while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (input, "on"))
- {
- if (im->drop_pcap_enable == 0)
- {
- if (im->pcap_filename == 0)
- im->pcap_filename = format (0, "/tmp/drop.pcap%c", 0);
-
- memset (&im->pcap_main, 0, sizeof (im->pcap_main));
- im->pcap_main.file_name = (char *) im->pcap_filename;
- im->pcap_main.n_packets_to_capture = 100;
- if (im->pcap_pkts_to_capture)
- im->pcap_main.n_packets_to_capture = im->pcap_pkts_to_capture;
-
- im->pcap_main.packet_type = PCAP_PACKET_TYPE_ethernet;
- im->drop_pcap_enable = 1;
- matched = 1;
- vlib_cli_output (vm, "pcap drop capture on...");
- }
- else
- {
- vlib_cli_output (vm, "pcap drop capture already on...");
- }
- matched = 1;
- }
- else if (unformat (input, "off"))
- {
- matched = 1;
-
- if (im->drop_pcap_enable)
- {
- vlib_cli_output (vm, "captured %d pkts...",
- im->pcap_main.n_packets_captured);
- if (im->pcap_main.n_packets_captured)
- {
- im->pcap_main.n_packets_to_capture =
- im->pcap_main.n_packets_captured;
- error = pcap_write (&im->pcap_main);
- if (error)
- clib_error_report (error);
- else
- vlib_cli_output (vm, "saved to %s...", im->pcap_filename);
- }
- }
- else
- {
- vlib_cli_output (vm, "pcap drop capture already off...");
- }
-
- im->drop_pcap_enable = 0;
- }
- else if (unformat (input, "max %d", &max))
- {
- im->pcap_pkts_to_capture = max;
- matched = 1;
- }
-
- else if (unformat (input, "intfc %U",
- unformat_vnet_sw_interface, vnm,
- &im->pcap_sw_if_index))
- matched = 1;
- else if (unformat (input, "intfc any"))
- {
- im->pcap_sw_if_index = 0;
- matched = 1;
- }
- else if (unformat (input, "file %s", &filename))
- {
- u8 *chroot_filename;
- /* Brain-police user path input */
- if (strstr ((char *) filename, "..")
- || index ((char *) filename, '/'))
- {
- vlib_cli_output (vm, "illegal characters in filename '%s'",
- filename);
- continue;
- }
-
- chroot_filename = format (0, "/tmp/%s%c", filename, 0);
- vec_free (filename);
-
- if (im->pcap_filename)
- vec_free (im->pcap_filename);
- vec_add1 (filename, 0);
- im->pcap_filename = chroot_filename;
- matched = 1;
- }
- else if (unformat (input, "status"))
- {
- if (im->drop_pcap_enable == 0)
- {
- vlib_cli_output (vm, "pcap drop capture is off...");
- continue;
- }
-
- vlib_cli_output (vm, "pcap drop capture: %d of %d pkts...",
- im->pcap_main.n_packets_captured,
- im->pcap_main.n_packets_to_capture);
- matched = 1;
- }
-
- else
- break;
- }
-
- if (matched == 0)
- return clib_error_return (0, "unknown input `%U'",
- format_unformat_error, input);
-
- return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (pcap_trace_command, static) = {
- .path = "pcap drop trace",
- .short_help =
- "pcap drop trace on off max <nn> intfc <intfc> file <name> status",
- .function = pcap_drop_trace_command_fn,
-};
-/* *INDENT-ON* */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
Code Review / vpp.git / blobdiff