--- /dev/null
+/*
+ * Copyright (c) 2015 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.
+ */
+/*
+ * interface.h: VNET interfaces/sub-interfaces
+ *
+ * Copyright (c) 2008 Eliot Dresselhaus
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef included_vnet_interface_h
+#define included_vnet_interface_h
+
+#include <vnet/unix/pcap.h>
+
+struct vnet_main_t;
+struct vnet_hw_interface_t;
+struct vnet_sw_interface_t;
+
+/* Interface up/down callback. */
+typedef clib_error_t * (vnet_interface_function_t)
+ (struct vnet_main_t * vnm, u32 if_index, u32 flags);
+
+/* Sub-interface add/del callback. */
+typedef clib_error_t * (vnet_subif_add_del_function_t)
+ (struct vnet_main_t * vnm, u32 if_index,
+ struct vnet_sw_interface_t * template,
+ int is_add);
+
+typedef struct _vnet_interface_function_list_elt {
+ struct _vnet_interface_function_list_elt * next_interface_function;
+ clib_error_t * (*fp) (struct vnet_main_t * vnm, u32 if_index, u32 flags);
+} _vnet_interface_function_list_elt_t;
+
+#define _VNET_INTERFACE_FUNCTION_DECL(f,tag) \
+ \
+static void __vnet_interface_function_init_##tag##_##f (void) \
+ __attribute__((__constructor__)) ; \
+ \
+static void __vnet_interface_function_init_##tag##_##f (void) \
+{ \
+ vnet_main_t * vnm = vnet_get_main(); \
+ static _vnet_interface_function_list_elt_t init_function; \
+ init_function.next_interface_function = vnm->tag##_functions; \
+ vnm->tag##_functions = &init_function; \
+ init_function.fp = (void *) &f; \
+}
+
+#define VNET_HW_INTERFACE_ADD_DEL_FUNCTION(f) \
+ _VNET_INTERFACE_FUNCTION_DECL(f,hw_interface_add_del)
+#define VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION(f) \
+ _VNET_INTERFACE_FUNCTION_DECL(f,hw_interface_link_up_down)
+#define VNET_SW_INTERFACE_ADD_DEL_FUNCTION(f) \
+ _VNET_INTERFACE_FUNCTION_DECL(f,sw_interface_add_del)
+#define VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION(f) \
+ _VNET_INTERFACE_FUNCTION_DECL(f,sw_interface_admin_up_down)
+
+/* A class of hardware interface devices. */
+typedef struct _vnet_device_class {
+ /* Index into main vector. */
+ u32 index;
+
+ /* Device name (e.g. "FOOBAR 1234a"). */
+ char * name;
+
+ /* Function to call when hardware interface is added/deleted. */
+ vnet_interface_function_t * interface_add_del_function;
+
+ /* Function to bring device administratively up/down. */
+ vnet_interface_function_t * admin_up_down_function;
+
+ /* Function to call when sub-interface is added/deleted */
+ vnet_subif_add_del_function_t * subif_add_del_function;
+
+ /* Redistribute flag changes/existence of this interface class. */
+ u32 redistribute;
+
+ /* Transmit function. */
+ vlib_node_function_t * tx_function;
+
+ /* Error strings indexed by error code for this node. */
+ char ** tx_function_error_strings;
+
+ /* Number of error codes used by this node. */
+ u32 tx_function_n_errors;
+
+ /* Renumber device name [only!] support, a control-plane kludge */
+ int (*name_renumber) (struct vnet_hw_interface_t * hi, u32 new_dev_instance);
+
+ /* Format device instance as name. */
+ format_function_t * format_device_name;
+
+ /* Parse function for device name. */
+ unformat_function_t * unformat_device_name;
+
+ /* Format device verbosely for this class. */
+ format_function_t * format_device;
+
+ /* Trace buffer format for TX function. */
+ format_function_t * format_tx_trace;
+
+ /* Function to clear hardware counters for device. */
+ void (* clear_counters) (u32 dev_class_instance);
+
+ uword (* is_valid_class_for_interface) (struct vnet_main_t * vnm, u32 hw_if_index, u32 hw_class_index);
+
+ /* Called when hardware class of an interface changes. */
+ void ( * hw_class_change) (struct vnet_main_t * vnm,
+ u32 hw_if_index,
+ u32 new_hw_class_index);
+
+ /* Called to redirect traffic from a specific interface instance */
+ void (* rx_redirect_to_node) (struct vnet_main_t * vnm,
+ u32 hw_if_index,
+ u32 node_index);
+
+ /* Link-list of all device classes set up by constructors created below */
+ struct _vnet_device_class * next_class_registration;
+
+ /* Do not splice vnet_interface_output_node into TX path */
+ u8 no_flatten_output_chains;
+
+} vnet_device_class_t;
+
+#define VNET_DEVICE_CLASS(x,...) \
+ __VA_ARGS__ vnet_device_class_t x; \
+static void __vnet_add_device_class_registration_##x (void) \
+ __attribute__((__constructor__)) ; \
+static void __vnet_add_device_class_registration_##x (void) \
+{ \
+ vnet_main_t * vnm = vnet_get_main(); \
+ x.next_class_registration = vnm->device_class_registrations; \
+ vnm->device_class_registrations = &x; \
+} \
+__VA_ARGS__ vnet_device_class_t x
+
+/* Layer-2 (e.g. Ethernet) interface class. */
+typedef struct _vnet_hw_interface_class {
+ /* Index into main vector. */
+ u32 index;
+
+ /* Class name (e.g. "Ethernet"). */
+ char * name;
+
+ /* Function to call when hardware interface is added/deleted. */
+ vnet_interface_function_t * interface_add_del_function;
+
+ /* Function to bring interface administratively up/down. */
+ vnet_interface_function_t * admin_up_down_function;
+
+ /* Function to call when link state changes. */
+ vnet_interface_function_t * link_up_down_function;
+
+ /* Format function to display interface name. */
+ format_function_t * format_interface_name;
+
+ /* Format function to display interface address. */
+ format_function_t * format_address;
+
+ /* Format packet header for this interface class. */
+ format_function_t * format_header;
+
+ /* Format device verbosely for this class. */
+ format_function_t * format_device;
+
+ /* Parser for hardware (e.g. ethernet) address. */
+ unformat_function_t * unformat_hw_address;
+
+ /* Parser for packet header for e.g. rewrite string. */
+ unformat_function_t * unformat_header;
+
+ /* Forms adjacency for given l3 packet type and destination address.
+ Returns number of bytes in adjacency. */
+ uword (* set_rewrite) (struct vnet_main_t * vnm,
+ u32 sw_if_index,
+ u32 l3_packet_type,
+ void * dst_address,
+ void * rewrite,
+ uword max_rewrite_bytes);
+
+ uword (* is_valid_class_for_interface) (struct vnet_main_t * vnm, u32 hw_if_index, u32 hw_class_index);
+
+ /* Called when hw interface class is changed and old hardware instance
+ may want to be deleted. */
+ void (* hw_class_change) (struct vnet_main_t * vnm, u32 hw_if_index, u32 old_class_index, u32 new_class_index);
+
+ /* List of hw interface classes, built by constructors */
+ struct _vnet_hw_interface_class * next_class_registration;
+
+} vnet_hw_interface_class_t;
+
+#define VNET_HW_INTERFACE_CLASS(x,...) \
+ __VA_ARGS__ vnet_hw_interface_class_t x; \
+static void __vnet_add_hw_interface_class_registration_##x (void) \
+ __attribute__((__constructor__)) ; \
+static void __vnet_add_hw_interface_class_registration_##x (void) \
+{ \
+ vnet_main_t * vnm = vnet_get_main(); \
+ x.next_class_registration = vnm->hw_interface_class_registrations; \
+ vnm->hw_interface_class_registrations = &x; \
+} \
+__VA_ARGS__ vnet_hw_interface_class_t x
+
+/* Hardware-interface. This corresponds to a physical wire
+ that packets flow over. */
+typedef struct vnet_hw_interface_t {
+ /* Interface name. */
+ u8 * name;
+
+ u32 flags;
+ /* Hardware link state is up. */
+#define VNET_HW_INTERFACE_FLAG_LINK_UP (1 << 0)
+ /* Hardware duplex state */
+#define VNET_HW_INTERFACE_FLAG_DUPLEX_SHIFT 1
+#define VNET_HW_INTERFACE_FLAG_HALF_DUPLEX (1 << 1)
+#define VNET_HW_INTERFACE_FLAG_FULL_DUPLEX (1 << 2)
+#define VNET_HW_INTERFACE_FLAG_DUPLEX_MASK \
+ (VNET_HW_INTERFACE_FLAG_HALF_DUPLEX | \
+ VNET_HW_INTERFACE_FLAG_FULL_DUPLEX)
+
+ /* Hardware link speed */
+#define VNET_HW_INTERFACE_FLAG_SPEED_SHIFT 3
+#define VNET_HW_INTERFACE_FLAG_SPEED_10M (1 << 3)
+#define VNET_HW_INTERFACE_FLAG_SPEED_100M (1 << 4)
+#define VNET_HW_INTERFACE_FLAG_SPEED_1G (1 << 5)
+#define VNET_HW_INTERFACE_FLAG_SPEED_10G (1 << 6)
+#define VNET_HW_INTERFACE_FLAG_SPEED_40G (1 << 7)
+#define VNET_HW_INTERFACE_FLAG_SPEED_100G (1 << 8)
+#define VNET_HW_INTERFACE_FLAG_SPEED_MASK \
+ (VNET_HW_INTERFACE_FLAG_SPEED_10M | \
+ VNET_HW_INTERFACE_FLAG_SPEED_100M | \
+ VNET_HW_INTERFACE_FLAG_SPEED_1G | \
+ VNET_HW_INTERFACE_FLAG_SPEED_10G | \
+ VNET_HW_INTERFACE_FLAG_SPEED_40G | \
+ VNET_HW_INTERFACE_FLAG_SPEED_100G)
+
+ /* Hardware address as vector. Zero (e.g. zero-length vector) if no
+ address for this class (e.g. PPP). */
+ u8 * hw_address;
+
+ /* Interface is up as far as software is concerned. */
+ /* NAME.{output,tx} nodes for this interface. */
+ u32 output_node_index, tx_node_index;
+
+ /* (dev_class, dev_instance) uniquely identifies hw interface. */
+ u32 dev_class_index;
+ u32 dev_instance;
+
+ /* (hw_class, hw_instance) uniquely identifies hw interface. */
+ u32 hw_class_index;
+ u32 hw_instance;
+
+ /* Hardware index for this hardware interface. */
+ u32 hw_if_index;
+
+ /* Software index for this hardware interface. */
+ u32 sw_if_index;
+
+ /* Maximum transmit rate for this interface in bits/sec. */
+ f64 max_rate_bits_per_sec;
+
+ /* Smallest packet size for this interface. */
+ u32 min_packet_bytes;
+
+ /* Largest packet size for this interface. */
+ u32 max_packet_bytes;
+
+ /* Number of extra bytes that go on the wire.
+ Packet length on wire
+ = max (length + per_packet_overhead_bytes, min_packet_bytes). */
+ u32 per_packet_overhead_bytes;
+
+ /* Receive and transmit layer 3 packet size limits (MRU/MTU). */
+ u32 max_l3_packet_bytes[VLIB_N_RX_TX];
+
+ /* Hash table mapping sub interface id to sw_if_index. */
+ uword * sub_interface_sw_if_index_by_id;
+
+ /* Count of number of L2 subinterfaces */
+ u32 l2_if_count;
+} vnet_hw_interface_t;
+
+typedef enum {
+ /* A hw interface. */
+ VNET_SW_INTERFACE_TYPE_HARDWARE,
+
+ /* A sub-interface. */
+ VNET_SW_INTERFACE_TYPE_SUB,
+} vnet_sw_interface_type_t;
+
+typedef struct {
+ // Subinterface ID. A number 0-N to uniquely identify this subinterface under the
+ // main (parent?) interface
+ u32 id;
+
+ // Classification data. Used to associate packet header with subinterface.
+ struct {
+ u16 outer_vlan_id;
+ u16 inner_vlan_id;
+ union {
+ u16 raw_flags;
+ struct {
+ u16 no_tags:1;
+ u16 one_tag:1;
+ u16 two_tags:1;
+ u16 dot1ad:1; // 0 = dot1q, 1=dot1ad
+ u16 exact_match:1;
+ u16 default_sub:1;
+ u16 outer_vlan_id_any:1;
+ u16 inner_vlan_id_any:1;
+ } flags;
+ };
+ } eth;
+} vnet_sub_interface_t;
+
+/* Software-interface. This corresponds to a Ethernet VLAN, ATM vc, a
+ tunnel, etc. Configuration (e.g. IP address) gets attached to
+ software interface. */
+typedef struct {
+ vnet_sw_interface_type_t type : 16;
+
+ u16 flags;
+ /* Interface is "up" meaning adminstratively up.
+ Up in the sense of link state being up is maintained by hardware interface. */
+#define VNET_SW_INTERFACE_FLAG_ADMIN_UP (1 << 0)
+
+ /* Interface is disabled for forwarding: punt all traffic to slow-path. */
+#define VNET_SW_INTERFACE_FLAG_PUNT (1 << 1)
+
+#define VNET_SW_INTERFACE_FLAG_PROXY_ARP (1 << 2)
+
+#define VNET_SW_INTERFACE_FLAG_UNNUMBERED (1 << 3)
+
+ /* Index for this interface. */
+ u32 sw_if_index;
+
+ /* Software interface index of super-interface;
+ equal to sw_if_index if this interface is not a
+ sub-interface. */
+ u32 sup_sw_if_index;
+
+ /* this swif is unnumbered, use addresses on unnumbered_sw_if_index... */
+ u32 unnumbered_sw_if_index;
+
+ u32 link_speed;
+
+ u32 output_feature_bitmap;
+
+ union {
+ /* VNET_SW_INTERFACE_TYPE_HARDWARE. */
+ u32 hw_if_index;
+
+ /* VNET_SW_INTERFACE_TYPE_SUB. */
+ vnet_sub_interface_t sub;
+
+ /* SW interfaces are sorted by type and key. */
+ // u32 sort_key;
+ };
+} vnet_sw_interface_t;
+
+typedef enum {
+ /* Simple counters. */
+ VNET_INTERFACE_COUNTER_DROP = 0,
+ VNET_INTERFACE_COUNTER_PUNT = 1,
+ VNET_INTERFACE_COUNTER_IP4 = 2,
+ VNET_INTERFACE_COUNTER_IP6 = 3,
+ VNET_INTERFACE_COUNTER_RX_NO_BUF = 4,
+ VNET_INTERFACE_COUNTER_RX_MISS = 5,
+ VNET_INTERFACE_COUNTER_RX_ERROR = 6,
+ VNET_INTERFACE_COUNTER_TX_ERROR = 7,
+ VNET_N_SIMPLE_INTERFACE_COUNTER = 8,
+ /* Combined counters. */
+ VNET_INTERFACE_COUNTER_RX = 0,
+ VNET_INTERFACE_COUNTER_TX = 1,
+ VNET_N_COMBINED_INTERFACE_COUNTER = 2,
+} vnet_interface_counter_type_t;
+
+typedef struct {
+ u32 output_node_index;
+ u32 tx_node_index;
+} vnet_hw_interface_nodes_t;
+
+typedef struct {
+ /* Hardware interfaces. */
+ vnet_hw_interface_t * hw_interfaces;
+
+ /* Hash table mapping HW interface name to index. */
+ uword * hw_interface_by_name;
+
+ /* Vectors if hardware interface classes and device classes. */
+ vnet_hw_interface_class_t * hw_interface_classes;
+ vnet_device_class_t * device_classes;
+
+ /* Hash table mapping name to hw interface/device class. */
+ uword * hw_interface_class_by_name;
+ uword * device_class_by_name;
+
+ /* Software interfaces. */
+ vnet_sw_interface_t * sw_interfaces;
+
+ /* Hash table mapping sub intfc sw_if_index by sup sw_if_index and sub id */
+ uword * sw_if_index_by_sup_and_sub;
+
+ /* Software interface counters both simple and combined
+ packet and byte counters. */
+ volatile u32 *sw_if_counter_lock;
+ vlib_simple_counter_main_t * sw_if_counters;
+ vlib_combined_counter_main_t * combined_sw_if_counters;
+
+ vnet_hw_interface_nodes_t * deleted_hw_interface_nodes;
+
+ /* pcap drop tracing */
+ int drop_pcap_enable;
+ pcap_main_t pcap_main;
+ u8 * pcap_filename;
+ u32 pcap_sw_if_index;
+ u32 pcap_pkts_to_capture;
+ uword * pcap_drop_filter_hash;
+
+} vnet_interface_main_t;
+
+static inline void vnet_interface_counter_lock (vnet_interface_main_t *im)
+{
+ if (im->sw_if_counter_lock)
+ while (__sync_lock_test_and_set (im->sw_if_counter_lock, 1))
+ /* zzzz */ ;
+}
+static inline void vnet_interface_counter_unlock (vnet_interface_main_t *im)
+{
+ if (im->sw_if_counter_lock)
+ *im->sw_if_counter_lock = 0;
+}
+
+void vnet_pcap_drop_trace_filter_add_del (u32 error_index, int is_add);
+
+int vnet_interface_name_renumber (u32 sw_if_index, u32 new_show_dev_instance);
+
+
+/*
+ * Output features
+ */
+
+#define foreach_intf_output_feat \
+ _(IPSEC, "ipsec-output")
+
+// Feature bitmap positions
+typedef enum {
+#define _(sym,str) INTF_OUTPUT_FEAT_##sym,
+ foreach_intf_output_feat
+#undef _
+ INTF_OUTPUT_N_FEAT,
+} intf_output_feat_t;
+
+/* flag that we are done with feature path */
+#define INTF_OUTPUT_FEAT_DONE INTF_OUTPUT_N_FEAT
+
+int vnet_interface_add_del_feature(struct vnet_main_t * vnm, vlib_main_t * vm,
+ u32 sw_if_index,
+ intf_output_feat_t feature, int is_add);
+
+#endif /* included_vnet_interface_h */
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