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Vector Packet Processing
l2_output.h
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1 /*
2  * l2_output.h : layer 2 output packet processing
3  *
4  * Copyright (c) 2013 Cisco and/or its affiliates.
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at:
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 #ifndef included_vnet_l2_output_h
19 #define included_vnet_l2_output_h
20 
21 #include <vlib/vlib.h>
22 #include <vnet/vnet.h>
23 #include <vnet/l2/feat_bitmap.h>
24 #include <vnet/l2/l2_vtr.h>
25 
26 
27 /* The L2 output feature configuration, a per-interface struct */
28 typedef struct
29 {
30 
32 
33  /*
34  * vlan tag rewrite for ingress and egress
35  * ingress vtr is located here because the same config data is used for
36  * the egress EFP filter check
37  */
42 
43  /* some of these flags may get integrated into the feature bitmap */
46 
47  /* split horizon group */
49 
50  /* flag for output vtr operation */
52 
54 
55 typedef struct
56 {
57  /*
58  * vector of output next node index, indexed by sw_if_index.
59  * used when all output features have been executed and the
60  * next nodes are the interface output nodes.
61  */
63 
64  /*
65  * array of next node index for each output feature, indexed
66  * by l2output_feat_t. Used to determine next feature node.
67  */
68  u32 l2_out_feat_next[32];
69 
70  /* config vector indexed by sw_if_index */
72 
73  /* Convenience variables */
77 
79 
81 
82 /* L2 output features */
83 
84 /* Mappings from feature ID to graph node name in reverse order */
85 #define foreach_l2output_feat \
86  _(OUTPUT, "interface-output") \
87  _(SPAN, "span-l2-output") \
88  _(CFM, "feature-bitmap-drop") \
89  _(QOS, "feature-bitmap-drop") \
90  _(ACL, "l2-output-acl") \
91  _(L2PT, "feature-bitmap-drop") \
92  _(EFP_FILTER, "l2-efp-filter") \
93  _(IPIW, "feature-bitmap-drop") \
94  _(STP_BLOCKED, "feature-bitmap-drop") \
95  _(LINESTATUS_DOWN, "feature-bitmap-drop") \
96  _(OUTPUT_CLASSIFY, "l2-output-classify") \
97  _(XCRW, "l2-xcrw")
98 
99 /* Feature bitmap positions */
100 typedef enum
101 {
102 #define _(sym,str) L2OUTPUT_FEAT_##sym##_BIT,
104 #undef _
107 
108 STATIC_ASSERT (L2OUTPUT_N_FEAT <= 32, "too many l2 output features");
109 
110 /* Feature bit masks */
111 typedef enum
112 {
113 #define _(sym,str) L2OUTPUT_FEAT_##sym = (1<<L2OUTPUT_FEAT_##sym##_BIT),
115 #undef _
117 
118 #define foreach_l2output_error \
119 _(L2OUTPUT, "L2 output packets") \
120 _(EFP_DROP, "L2 EFP filter pre-rewrite drops") \
121 _(VTR_DROP, "L2 output tag rewrite drops") \
122 _(SHG_DROP, "L2 split horizon drops") \
123 _(DROP, "L2 output drops") \
124 _(MAPPING_DROP, "L2 Output interface not valid")
125 
126 typedef enum
127 {
132 
133 typedef enum
134 {
135 #define _(sym,str) L2OUTPUT_ERROR_##sym,
137 #undef _
140 
141 /* Return an array of strings containing graph node names of each feature */
142 char **l2output_get_feat_names (void);
143 
144 /* arg0 - u32 feature_bitmap */
145 u8 *format_l2_output_features (u8 * s, va_list * args);
146 
147 /**
148  * The next set of functions is for use by output feature graph nodes.
149  * When the last bit has been cleared from the output feature bitmap,
150  * the next node is the output graph node for the TX sw_if_index.
151  * These functions help the feature nodes get that node index.
152  */
153 
154 /* Create a mapping to the output graph node for the given sw_if_index */
157  u32 sw_if_index);
158 
159 /** Get a pointer to the config for the given interface */
161 
162 /** Enable (or disable) the feature in the bitmap for the given interface */
163 void l2output_intf_bitmap_enable (u32 sw_if_index,
164  u32 feature_bitmap, u32 enable);
165 
166 #endif
167 
168 /*
169  * fd.io coding-style-patch-verification: ON
170  *
171  * Local Variables:
172  * eval: (c-set-style "gnu")
173  * End:
174  */
#define foreach_l2output_error
Definition: l2_output.h:118
char ** l2output_get_feat_names(void)
Definition: l2_output.c:38
l2output_next_t
Definition: l2_output.h:126
void l2output_intf_bitmap_enable(u32 sw_if_index, u32 feature_bitmap, u32 enable)
Enable (or disable) the feature in the bitmap for the given interface.
Definition: l2_output.c:686
STATIC_ASSERT(L2OUTPUT_N_FEAT<=32,"too many l2 output features")
struct _vlib_node_registration vlib_node_registration_t
u32 * output_node_index_vec
Definition: l2_output.h:62
vlib_node_registration_t l2output_node
(constructor) VLIB_REGISTER_NODE (l2output_node)
Definition: l2_output.c:501
Per-interface vlan tag rewrite configuration There will be one instance of this struct for each sw_if...
Definition: l2_vtr.h:45
ptr_config_t output_pbb_vtr
Definition: l2_output.h:41
void l2output_create_output_node_mapping(vlib_main_t *vlib_main, vnet_main_t *vnet_main, u32 sw_if_index)
The next set of functions is for use by output feature graph nodes.
Definition: l2_output.c:662
vtr_config_t input_vtr
Definition: l2_output.h:38
l2output_main_t l2output_main
Definition: l2_output.c:66
vnet_main_t vnet_main
Definition: misc.c:43
vlib_main_t * vlib_main
Definition: l2_output.h:74
#define foreach_l2output_feat
Definition: l2_output.h:85
vtr_config_t output_vtr
Definition: l2_output.h:39
l2output_feat_masks_t
Definition: l2_output.h:111
unsigned int u32
Definition: types.h:88
u8 * format_l2_output_features(u8 *s, va_list *args)
Definition: l2_output.c:44
int vlib_main(vlib_main_t *volatile vm, unformat_input_t *input)
Definition: main.c:1676
ptr_config_t input_pbb_vtr
Definition: l2_output.h:40
unsigned char u8
Definition: types.h:56
l2_output_config_t * l2output_intf_config(u32 sw_if_index)
Get a pointer to the config for the given interface.
Definition: l2_output.c:676
l2output_feat_t
Definition: l2_output.h:100
l2_output_config_t * configs
Definition: l2_output.h:71
l2output_error_t
Definition: l2_output.h:133
vnet_main_t * vnet_main
Definition: l2_output.h:75