+++ /dev/null
-/*
- * l2_output.h : layer 2 output packet 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.
- */
-
-#ifndef included_vnet_l2_output_h
-#define included_vnet_l2_output_h
-
-#include <vlib/vlib.h>
-#include <vnet/vnet.h>
-#include <vnet/l2/feat_bitmap.h>
-#include <vnet/l2/l2_vtr.h>
-
-
-/* The L2 output feature configuration, a per-interface struct */
-typedef struct
-{
-
- u32 feature_bitmap;
-
- /*
- * vlan tag rewrite for ingress and egress
- * ingress vtr is located here because the same config data is used for
- * the egress EFP filter check
- */
- vtr_config_t input_vtr;
- vtr_config_t output_vtr;
- ptr_config_t input_pbb_vtr;
- ptr_config_t output_pbb_vtr;
-
- /* some of these flags may get integrated into the feature bitmap */
- u8 fwd_enable;
- u8 flood_enable;
-
- /* split horizon group */
- u8 shg;
-
- /* flag for output vtr operation */
- u8 out_vtr_flag;
-
-} l2_output_config_t;
-
-
-/*
- * The set of next nodes for features and interface output.
- * Each output feature node should include this.
- */
-typedef struct
-{
- /*
- * vector of output next node index, indexed by sw_if_index.
- * used when all output features have been executed and the
- * next nodes are the interface output nodes.
- */
- u32 *output_node_index_vec;
-
- /*
- * array of next node index for each output feature, indexed
- * by l2output_feat_t. Used to determine next feature node.
- */
- u32 feat_next_node_index[32];
-
-} l2_output_next_nodes_st;
-
-
-typedef struct
-{
- /* Next nodes for features and output interfaces */
- l2_output_next_nodes_st next_nodes;
-
- /* config vector indexed by sw_if_index */
- l2_output_config_t *configs;
-
- /* Convenience variables */
- vlib_main_t *vlib_main;
- vnet_main_t *vnet_main;
-} l2output_main_t;
-
-l2output_main_t l2output_main;
-
-/* L2 output features */
-
-/* Mappings from feature ID to graph node name */
-#define foreach_l2output_feat \
- _(SPAN, "feature-bitmap-drop") \
- _(CFM, "feature-bitmap-drop") \
- _(QOS, "feature-bitmap-drop") \
- _(ACL, "l2-output-acl") \
- _(L2PT, "feature-bitmap-drop") \
- _(EFP_FILTER, "l2-efp-filter") \
- _(IPIW, "feature-bitmap-drop") \
- _(STP_BLOCKED, "feature-bitmap-drop") \
- _(LINESTATUS_DOWN, "feature-bitmap-drop") \
- _(OUTPUT_CLASSIFY, "l2-output-classify") \
- _(XCRW, "l2-xcrw")
-
-/* Feature bitmap positions */
-typedef enum
-{
-#define _(sym,str) L2OUTPUT_FEAT_##sym##_BIT,
- foreach_l2output_feat
-#undef _
- L2OUTPUT_N_FEAT,
-} l2output_feat_t;
-
-/* Feature bit masks */
-typedef enum
-{
-#define _(sym,str) L2OUTPUT_FEAT_##sym = (1<<L2OUTPUT_FEAT_##sym##_BIT),
- foreach_l2output_feat
-#undef _
-} l2output_feat_masks_t;
-
-#define foreach_l2output_error \
-_(L2OUTPUT, "L2 output packets") \
-_(EFP_DROP, "L2 EFP filter pre-rewrite drops") \
-_(VTR_DROP, "L2 output tag rewrite drops") \
-_(SHG_DROP, "L2 split horizon drops") \
-_(DROP, "L2 output drops") \
-_(MAPPING_DROP, "L2 Output interface mapping in progress")
-
-typedef enum
-{
- L2OUTPUT_NEXT_DROP,
- L2OUTPUT_NEXT_BAD_INTF,
- L2OUTPUT_N_NEXT,
-} l2output_next_t;
-
-typedef enum
-{
-#define _(sym,str) L2OUTPUT_ERROR_##sym,
- foreach_l2output_error
-#undef _
- L2OUTPUT_N_ERROR,
-} l2output_error_t;
-
-/* Return an array of strings containing graph node names of each feature */
-char **l2output_get_feat_names (void);
-
-
-/**
- * The next set of functions is for use by output feature graph nodes.
- * When the last bit has been cleared from the output feature bitmap,
- * the next node is the output graph node for the TX sw_if_index.
- * These functions help the feature nodes get that node index.
- */
-
-/* Create a mapping to the output graph node for the given sw_if_index */
-u32 l2output_create_output_node_mapping (vlib_main_t * vlib_main, vnet_main_t * vnet_main, u32 node_index, /* index of current node */
- u32 * output_node_index_vec,
- u32 sw_if_index);
-
-/* Initialize the next node mapping table */
-always_inline void
-l2output_init_output_node_vec (u32 ** output_node_index_vec)
-{
-
- /*
- * Size it at 100 sw_if_indexes initially
- * Uninitialized mappings are set to ~0
- */
- vec_validate_init_empty (*output_node_index_vec, 100, ~0);
-}
-
-
-/**
- * Get a mapping from the output node mapping table,
- * creating the entry if necessary.
- */
-always_inline u32
-l2output_get_output_node (vlib_main_t * vlib_main, vnet_main_t * vnet_main, u32 node_index, /* index of current node */
- u32 sw_if_index, u32 ** output_node_index_vec) /* may be updated */
-{
- u32 next; /* index of next graph node */
-
- /* Insure the vector is big enough */
- vec_validate_init_empty (*output_node_index_vec, sw_if_index, ~0);
-
- /* Get the mapping for the sw_if_index */
- next = vec_elt (*output_node_index_vec, sw_if_index);
-
- if (next == ~0)
- {
- /* Mapping doesn't exist so create it */
- next = l2output_create_output_node_mapping (vlib_main,
- vnet_main,
- node_index,
- *output_node_index_vec,
- sw_if_index);
- }
-
- return next;
-}
-
-
-/** Determine the next L2 node based on the output feature bitmap */
-always_inline void
-l2_output_dispatch (vlib_main_t * vlib_main,
- vnet_main_t * vnet_main,
- vlib_node_runtime_t * node,
- u32 node_index,
- u32 * cached_sw_if_index,
- u32 * cached_next_index,
- l2_output_next_nodes_st * next_nodes,
- vlib_buffer_t * b0,
- u32 sw_if_index, u32 feature_bitmap, u32 * next0)
-{
- if (feature_bitmap)
- {
- /* There are some features to execute */
-
- /* Save bitmap for the next feature graph nodes */
- vnet_buffer (b0)->l2.feature_bitmap = feature_bitmap;
-
- /* Determine the next node */
- *next0 =
- feat_bitmap_get_next_node_index (next_nodes->feat_next_node_index,
- feature_bitmap);
- }
- else
- {
- /*
- * There are no features. Send packet to TX node for sw_if_index0
- * This is a little tricky in that the output interface next node indexes
- * are not precomputed at init time.
- */
-
- if (sw_if_index == *cached_sw_if_index)
- {
- /* We hit in the one-entry cache. Use it. */
- *next0 = *cached_next_index;
- }
- else
- {
- /* Look up the output TX node */
- *next0 = l2output_get_output_node (vlib_main,
- vnet_main,
- node_index,
- sw_if_index,
- &next_nodes->output_node_index_vec);
-
- if (*next0 == L2OUTPUT_NEXT_DROP)
- {
- vnet_hw_interface_t *hw0;
- hw0 = vnet_get_sup_hw_interface (vnet_main, sw_if_index);
-
- if (hw0->flags & VNET_HW_INTERFACE_FLAG_L2OUTPUT_MAPPED)
- b0->error = node->errors[L2OUTPUT_ERROR_MAPPING_DROP];
- }
-
- /* Update the one-entry cache */
- *cached_sw_if_index = sw_if_index;
- *cached_next_index = *next0;
- }
- }
-}
-
-/** Get a pointer to the config for the given interface */
-l2_output_config_t *l2output_intf_config (u32 sw_if_index);
-
-/** Enable (or disable) the feature in the bitmap for the given interface */
-void l2output_intf_bitmap_enable (u32 sw_if_index,
- u32 feature_bitmap, u32 enable);
-
-#endif
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
Code Review / vpp.git / blobdiff