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-rw-r--r--src/vnet/feature/feature.h382
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diff --git a/src/vnet/feature/feature.h b/src/vnet/feature/feature.h
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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;
+ /** End node */
+ char *end_node;
+ /* Feature arc index, assigned by init function */
+ u8 feature_arc_index;
+ u8 *arc_index_ptr;
+} vnet_feature_arc_registration_t;
+
+/* Enable feature callback. */
+typedef clib_error_t *(vnet_feature_enable_disable_function_t)
+ (u32 sw_if_index, int enable_disable);
+
+/** 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_ptr;
+ u32 feature_index;
+ /** Constraints of the form "this feature runs before X" */
+ char **runs_before;
+ /** Constraints of the form "this feature runs after Y" */
+ char **runs_after;
+
+ /** Function to enable/disable feature **/
+ vnet_feature_enable_disable_function_t *enable_disable_cb;
+} vnet_feature_registration_t;
+
+typedef struct vnet_feature_config_main_t_
+{
+ vnet_config_main_t config_main;
+ u32 *config_index_by_sw_if_index;
+ u32 end_feature_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);
+vnet_feature_registration_t *vnet_get_feature_reg (const char *arc_name,
+ const char *node_name);
+
+
+int
+vnet_feature_enable_disable_with_index (u8 arc_index, u32 feature_index,
+ u32 sw_if_index, int enable_disable,
+ void *feature_config,
+ u32 n_feature_config_bytes);
+
+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 inline vnet_feature_config_main_t *
+vnet_get_feature_arc_config_main (u8 arc_index)
+{
+ vnet_feature_main_t *fm = &feature_main;
+
+ if (arc_index == (u8) ~ 0)
+ return 0;
+
+ return &fm->feature_config_mains[arc_index];
+}
+
+static_always_inline vnet_feature_config_main_t *
+vnet_feature_get_config_main (u16 arc)
+{
+ vnet_feature_main_t *fm = &feature_main;
+ return &fm->feature_config_mains[arc];
+}
+
+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);
+ }
+}
+
+static_always_inline void
+vnet_feature_start_device_input_x4 (u32 sw_if_index,
+ u32 * next0,
+ u32 * next1,
+ u32 * next2,
+ u32 * next3,
+ vlib_buffer_t * b0,
+ vlib_buffer_t * b1,
+ vlib_buffer_t * b2,
+ vlib_buffer_t * b3,
+ u16 buffer_advanced0,
+ u16 buffer_advanced1,
+ u16 buffer_advanced2,
+ u16 buffer_advanced3)
+{
+ 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 (b2)->device_input_feat.saved_next_index = *next2;
+ vnet_buffer (b3)->device_input_feat.saved_next_index = *next3;
+
+ vnet_buffer (b0)->device_input_feat.buffer_advance = buffer_advanced0;
+ vnet_buffer (b1)->device_input_feat.buffer_advance = buffer_advanced1;
+ vnet_buffer (b2)->device_input_feat.buffer_advance = buffer_advanced2;
+ vnet_buffer (b3)->device_input_feat.buffer_advance = buffer_advanced3;
+
+ vlib_buffer_advance (b0, -buffer_advanced0);
+ vlib_buffer_advance (b1, -buffer_advanced1);
+ vlib_buffer_advance (b2, -buffer_advanced2);
+ vlib_buffer_advance (b3, -buffer_advanced3);
+
+ b0->feature_arc_index = feature_arc_index;
+ b1->feature_arc_index = feature_arc_index;
+ b2->feature_arc_index = feature_arc_index;
+ b3->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;
+ b2->current_config_index = b0->current_config_index;
+ b3->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);
+ vnet_get_config_data (&cm->config_main, &b2->current_config_index,
+ next2, /* # bytes of config data */ 0);
+ vnet_get_config_data (&cm->config_main, &b3->current_config_index,
+ next3, /* # bytes of config data */ 0);
+ }
+}
+
+#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:
+ */