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Diffstat (limited to 'src/vnet/l2/l2_output.h')
| -rw-r--r-- | src/vnet/l2/l2_output.h | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/src/vnet/l2/l2_output.h b/src/vnet/l2/l2_output.h new file mode 100644 index 00000000..1a73fdf9 --- /dev/null +++ b/src/vnet/l2/l2_output.h @@ -0,0 +1,174 @@ +/* + * 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; + +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 l2_out_feat_next[32]; + + /* 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; + +extern vlib_node_registration_t l2output_node; + +/* L2 output features */ + +/* Mappings from feature ID to graph node name in reverse order */ +#define foreach_l2output_feat \ + _(OUTPUT, "interface-output") \ + _(SPAN, "span-l2-output") \ + _(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; + +STATIC_ASSERT (L2OUTPUT_N_FEAT <= 32, "too many l2 output features"); + +/* 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 not valid") + +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); + +/* arg0 - u32 feature_bitmap */ +u8 *format_l2_output_features (u8 * s, va_list * args); + +/** + * 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 */ +void l2output_create_output_node_mapping (vlib_main_t * vlib_main, + vnet_main_t * vnet_main, + u32 sw_if_index); + +/** 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: + */ |