+++ /dev/null
-/*
- * l2_output_acl.c : layer 2 output acl processing
- *
- * Copyright (c) 2013 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 <vnet/ethernet/ethernet.h>
-#include <vnet/ethernet/packet.h>
-#include <vnet/ip/ip_packet.h>
-#include <vnet/ip/ip4_packet.h>
-#include <vnet/ip/ip6_packet.h>
-#include <vlib/cli.h>
-#include <vnet/l2/feat_bitmap.h>
-#include <vnet/l2/l2_output.h>
-
-#include <vppinfra/error.h>
-#include <vppinfra/hash.h>
-#include <vppinfra/cache.h>
-
-
-typedef struct
-{
- /* Next nodes for L2 output features */
- u32 l2_out_feat_next[32];
-
- /* convenience variables */
- vlib_main_t *vlib_main;
- vnet_main_t *vnet_main;
-} l2_outacl_main_t;
-
-
-
-typedef struct
-{
- /* per-pkt trace data */
- u8 src[6];
- u8 dst[6];
- u32 next_index;
- u32 sw_if_index;
-} l2_outacl_trace_t;
-
-/* packet trace format function */
-static u8 *
-format_l2_outacl_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_outacl_trace_t *t = va_arg (*args, l2_outacl_trace_t *);
-
- s = format (s, "l2-output-acl: sw_if_index %d dst %U src %U",
- t->sw_if_index,
- format_ethernet_address, t->dst,
- format_ethernet_address, t->src);
- return s;
-}
-
-l2_outacl_main_t l2_outacl_main;
-
-static vlib_node_registration_t l2_outacl_node;
-
-#define foreach_l2_outacl_error \
-_(L2_OUTACL, "L2 output ACL packets") \
-_(DROP, "L2 output drops")
-
-typedef enum
-{
-#define _(sym,str) L2_OUTACL_ERROR_##sym,
- foreach_l2_outacl_error
-#undef _
- L2_OUTACL_N_ERROR,
-} l2_outacl_error_t;
-
-static char *l2_outacl_error_strings[] = {
-#define _(sym,string) string,
- foreach_l2_outacl_error
-#undef _
-};
-
-typedef enum
-{
- L2_OUTACL_NEXT_DROP,
- L2_OUTACL_N_NEXT,
-} l2_outacl_next_t;
-
-
-
-static uword
-l2_outacl_node_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
- u32 n_left_from, *from, *to_next;
- l2_outacl_next_t next_index;
- l2_outacl_main_t *msm = &l2_outacl_main;
- vlib_node_t *n = vlib_get_node (vm, l2_outacl_node.index);
- u32 node_counter_base_index = n->error_heap_index;
- vlib_error_main_t *em = &vm->error_main;
-
- from = vlib_frame_vector_args (frame);
- n_left_from = frame->n_vectors; /* number of packets to process */
- next_index = node->cached_next_index;
-
- while (n_left_from > 0)
- {
- u32 n_left_to_next;
-
- /* get space to enqueue frame to graph node "next_index" */
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-
- while (0 && n_left_from >= 4 && n_left_to_next >= 2)
- {
- u32 bi0, bi1;
- vlib_buffer_t *b0, *b1;
- u32 next0, next1;
- u32 sw_if_index0, sw_if_index1;
- ethernet_header_t *h0, *h1;
-
- /* 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 */
- /* bi is "buffer index", b is pointer to the buffer */
- 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);
-
- /* TX interface handles */
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
- sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_TX];
-
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
- {
- if (b0->flags & VLIB_BUFFER_IS_TRACED)
- {
- l2_outacl_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = sw_if_index0;
- t->next_index = next0;
- clib_memcpy (t->src, h0->src_address, 6);
- clib_memcpy (t->dst, h0->dst_address, 6);
- }
- if (b1->flags & VLIB_BUFFER_IS_TRACED)
- {
- l2_outacl_trace_t *t =
- vlib_add_trace (vm, node, b1, sizeof (*t));
- t->sw_if_index = sw_if_index1;
- t->next_index = next1;
- clib_memcpy (t->src, h1->src_address, 6);
- clib_memcpy (t->dst, h1->dst_address, 6);
- }
- }
-
- em->counters[node_counter_base_index + L2_OUTACL_ERROR_L2_OUTACL] +=
- 2;
-
- /* add core loop code here */
-
- /* verify speculative enqueues, maybe switch current next frame */
- /* if next0==next1==next_index then nothing special needs to be done */
- 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;
- u32 sw_if_index0;
- ethernet_header_t *h0;
-
- /* 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);
- h0 = vlib_buffer_get_current (b0);
-
- sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
-
- if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
- && (b0->flags & VLIB_BUFFER_IS_TRACED)))
- {
- l2_outacl_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- t->sw_if_index = sw_if_index0;
- clib_memcpy (t->src, h0->src_address, 6);
- clib_memcpy (t->dst, h0->dst_address, 6);
- }
-
- em->counters[node_counter_base_index + L2_OUTACL_ERROR_L2_OUTACL] +=
- 1;
-
- /*
- * L2_OUTACL code
- * Dummy for now, just go to next feature node
- */
-
- /* Determine next node */
- next0 = vnet_l2_feature_next (b0, msm->l2_out_feat_next,
- L2OUTPUT_FEAT_ACL);
-
- /* 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);
- }
-
- return frame->n_vectors;
-}
-
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (l2_outacl_node,static) = {
- .function = l2_outacl_node_fn,
- .name = "l2-output-acl",
- .vector_size = sizeof (u32),
- .format_trace = format_l2_outacl_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
-
- .n_errors = ARRAY_LEN(l2_outacl_error_strings),
- .error_strings = l2_outacl_error_strings,
-
- .n_next_nodes = L2_OUTACL_N_NEXT,
-
- /* edit / add dispositions here */
- .next_nodes = {
- [L2_OUTACL_NEXT_DROP] = "error-drop",
- },
-};
-/* *INDENT-ON* */
-
-VLIB_NODE_FUNCTION_MULTIARCH (l2_outacl_node, l2_outacl_node_fn)
- clib_error_t *l2_outacl_init (vlib_main_t * vm)
-{
- l2_outacl_main_t *mp = &l2_outacl_main;
-
- mp->vlib_main = vm;
- mp->vnet_main = vnet_get_main ();
-
- /* Initialize the feature next-node indexes */
- feat_bitmap_init_next_nodes (vm,
- l2_outacl_node.index,
- L2OUTPUT_N_FEAT,
- l2output_get_feat_names (),
- mp->l2_out_feat_next);
-
- return 0;
-}
-
-VLIB_INIT_FUNCTION (l2_outacl_init);
-
-#if 0
-/** @todo maybe someone will add output ACL's in the future.
- * Set subinterface outacl enable/disable.
- * The CLI format is:
- * set interface acl output <interface> [disable]
- */
-static clib_error_t *
-int_l2_outacl (vlib_main_t * vm,
- unformat_input_t * input, vlib_cli_command_t * cmd)
-{
- vnet_main_t *vnm = vnet_get_main ();
- clib_error_t *error = 0;
- u32 sw_if_index;
- u32 enable;
-
- if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
- {
- error = clib_error_return (0, "unknown interface `%U'",
- format_unformat_error, input);
- goto done;
- }
-
- enable = 1;
- if (unformat (input, "disable"))
- {
- enable = 0;
- }
-
- /* set the interface flag */
- l2output_intf_bitmap_enable (sw_if_index, L2OUTPUT_FEAT_ACL, enable);
-
-done:
- return error;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (int_l2_outacl_cli, static) = {
- .path = "set interface acl output",
- .short_help = "set interface acl output <interface> [disable]",
- .function = int_l2_outacl,
-};
-/* *INDENT-ON* */
-#endif
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
Code Review / vpp.git / blobdiff