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/*
* Copyright (c) 2016 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_features_h
#define included_features_h
#include <vnet/vnet.h>
#include <vnet/api_errno.h>
/** feature registration object */
typedef struct _vnet_feature_arc_registration
{
/** next registration in list of all registrations*/
struct _vnet_feature_arc_registration *next;
/** Feature Arc name */
char *arc_name;
/** Start nodes */
char **start_nodes;
int n_start_nodes;
/* Feature arc index, assigned by init function */
u8 feature_arc_index;
} vnet_feature_arc_registration_t;
/** feature registration object */
typedef struct _vnet_feature_registration
{
/** next registration in list of all registrations*/
struct _vnet_feature_registration *next;
/** Feature arc name */
char *arc_name;
/** Graph node name */
char *node_name;
/** Pointer to this feature index, filled in by vnet_feature_arc_init */
u32 *feature_index;
u32 feature_index_u32;
/** Constraints of the form "this feature runs before X" */
char **runs_before;
/** Constraints of the form "this feature runs after Y" */
char **runs_after;
} vnet_feature_registration_t;
typedef struct vnet_feature_config_main_t_
{
vnet_config_main_t config_main;
u32 *config_index_by_sw_if_index;
} vnet_feature_config_main_t;
typedef struct
{
/** feature arc configuration list */
vnet_feature_arc_registration_t *next_arc;
uword **arc_index_by_name;
/** feature path configuration lists */
vnet_feature_registration_t *next_feature;
vnet_feature_registration_t **next_feature_by_arc;
uword **next_feature_by_name;
/** feature config main objects */
vnet_feature_config_main_t *feature_config_mains;
/** Save partial order results for show command */
char ***feature_nodes;
/** bitmap of interfaces which have driver rx features configured */
uword **sw_if_index_has_features;
/** feature reference counts by interface */
i16 **feature_count_by_sw_if_index;
/** Feature arc index for device-input */
u8 device_input_feature_arc_index;
/** convenience */
vlib_main_t *vlib_main;
vnet_main_t *vnet_main;
} vnet_feature_main_t;
extern vnet_feature_main_t feature_main;
#define VNET_FEATURE_ARC_INIT(x,...) \
__VA_ARGS__ vnet_feature_arc_registration_t vnet_feat_arc_##x;\
static void __vnet_add_feature_arc_registration_##x (void) \
__attribute__((__constructor__)) ; \
static void __vnet_add_feature_arc_registration_##x (void) \
{ \
vnet_feature_main_t * fm = &feature_main; \
vnet_feat_arc_##x.next = fm->next_arc; \
fm->next_arc = & vnet_feat_arc_##x; \
} \
__VA_ARGS__ vnet_feature_arc_registration_t vnet_feat_arc_##x
#define VNET_FEATURE_INIT(x,...) \
__VA_ARGS__ vnet_feature_registration_t vnet_feat_##x; \
static void __vnet_add_feature_registration_##x (void) \
__attribute__((__constructor__)) ; \
static void __vnet_add_feature_registration_##x (void) \
{ \
vnet_feature_main_t * fm = &feature_main; \
vnet_feat_##x.next = fm->next_feature; \
fm->next_feature = & vnet_feat_##x; \
} \
__VA_ARGS__ vnet_feature_registration_t vnet_feat_##x
void
vnet_config_update_feature_count (vnet_feature_main_t * fm, u8 arc,
u32 sw_if_index, int is_add);
u32 vnet_get_feature_index (u8 arc, const char *s);
u8 vnet_get_feature_arc_index (const char *s);
int
vnet_feature_enable_disable (const char *arc_name, const char *node_name,
u32 sw_if_index, int enable_disable,
void *feature_config,
u32 n_feature_config_bytes);
static_always_inline int
vnet_have_features (u8 arc, u32 sw_if_index)
{
vnet_feature_main_t *fm = &feature_main;
return clib_bitmap_get (fm->sw_if_index_has_features[arc], sw_if_index);
}
static_always_inline u32
vnet_get_feature_config_index (u8 arc, u32 sw_if_index)
{
vnet_feature_main_t *fm = &feature_main;
vnet_feature_config_main_t *cm = &fm->feature_config_mains[arc];
return vec_elt (cm->config_index_by_sw_if_index, sw_if_index);
}
static_always_inline void *
vnet_feature_arc_start_with_data (u8 arc, u32 sw_if_index, u32 * next,
vlib_buffer_t * b, u32 n_data_bytes)
{
vnet_feature_main_t *fm = &feature_main;
vnet_feature_config_main_t *cm;
cm = &fm->feature_config_mains[arc];
if (PREDICT_FALSE (vnet_have_features (arc, sw_if_index)))
{
b->feature_arc_index = arc;
b->current_config_index =
vec_elt (cm->config_index_by_sw_if_index, sw_if_index);
return vnet_get_config_data (&cm->config_main, &b->current_config_index,
next, n_data_bytes);
}
return 0;
}
static_always_inline void
vnet_feature_arc_start (u8 arc, u32 sw_if_index, u32 * next0,
vlib_buffer_t * b0)
{
vnet_feature_arc_start_with_data (arc, sw_if_index, next0, b0, 0);
}
static_always_inline void *
vnet_feature_next_with_data (u32 sw_if_index, u32 * next0,
vlib_buffer_t * b0, u32 n_data_bytes)
{
vnet_feature_main_t *fm = &feature_main;
u8 arc = b0->feature_arc_index;
vnet_feature_config_main_t *cm = &fm->feature_config_mains[arc];
return vnet_get_config_data (&cm->config_main,
&b0->current_config_index, next0,
n_data_bytes);
}
static_always_inline void
vnet_feature_next (u32 sw_if_index, u32 * next0, vlib_buffer_t * b0)
{
vnet_feature_next_with_data (sw_if_index, next0, b0, 0);
}
static_always_inline void
vnet_feature_start_device_input_x1 (u32 sw_if_index, u32 * next0,
vlib_buffer_t * b0, u16 buffer_advanced0)
{
vnet_feature_main_t *fm = &feature_main;
vnet_feature_config_main_t *cm;
u8 feature_arc_index = fm->device_input_feature_arc_index;
cm = &fm->feature_config_mains[feature_arc_index];
if (PREDICT_FALSE
(clib_bitmap_get
(fm->sw_if_index_has_features[feature_arc_index], sw_if_index)))
{
/*
* Save next0 so that the last feature in the chain
* can skip ethernet-input if indicated...
*/
vnet_buffer (b0)->device_input_feat.saved_next_index = *next0;
vnet_buffer (b0)->device_input_feat.buffer_advance = buffer_advanced0;
vlib_buffer_advance (b0, -buffer_advanced0);
b0->feature_arc_index = feature_arc_index;
b0->current_config_index =
vec_elt (cm->config_index_by_sw_if_index, sw_if_index);
vnet_get_config_data (&cm->config_main, &b0->current_config_index,
next0, /* # bytes of config data */ 0);
}
}
static_always_inline void
vnet_feature_start_device_input_x2 (u32 sw_if_index,
u32 * next0,
u32 * next1,
vlib_buffer_t * b0,
vlib_buffer_t * b1,
u16 buffer_advanced0,
u16 buffer_advanced1)
{
vnet_feature_main_t *fm = &feature_main;
vnet_feature_config_main_t *cm;
u8 feature_arc_index = fm->device_input_feature_arc_index;
cm = &fm->feature_config_mains[feature_arc_index];
if (PREDICT_FALSE
(clib_bitmap_get
(fm->sw_if_index_has_features[feature_arc_index], sw_if_index)))
{
/*
* Save next0 so that the last feature in the chain
* can skip ethernet-input if indicated...
*/
vnet_buffer (b0)->device_input_feat.saved_next_index = *next0;
vnet_buffer (b1)->device_input_feat.saved_next_index = *next1;
vnet_buffer (b0)->device_input_feat.buffer_advance = buffer_advanced0;
vnet_buffer (b1)->device_input_feat.buffer_advance = buffer_advanced1;
vlib_buffer_advance (b0, -buffer_advanced0);
vlib_buffer_advance (b1, -buffer_advanced1);
b0->feature_arc_index = feature_arc_index;
b1->feature_arc_index = feature_arc_index;
b0->current_config_index =
vec_elt (cm->config_index_by_sw_if_index, sw_if_index);
b1->current_config_index = b0->current_config_index;
vnet_get_config_data (&cm->config_main, &b0->current_config_index,
next0, /* # bytes of config data */ 0);
vnet_get_config_data (&cm->config_main, &b1->current_config_index,
next1, /* # bytes of config data */ 0);
}
}
#define ORDER_CONSTRAINTS (char*[])
#define VNET_FEATURES(...) (char*[]) { __VA_ARGS__, 0}
clib_error_t *vnet_feature_arc_init (vlib_main_t * vm,
vnet_config_main_t * vcm,
char **feature_start_nodes,
int num_feature_start_nodes,
vnet_feature_registration_t *
first_reg, char ***feature_nodes);
void vnet_interface_features_show (vlib_main_t * vm, u32 sw_if_index);
#endif /* included_feature_h */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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