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/*
* nsim.h - skeleton vpp engine plug-in header file
*
* Copyright (c) <current-year> <your-organization>
* 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_nsim_h__
#define __included_nsim_h__
#include <vnet/vnet.h>
#include <vnet/ip/ip.h>
#include <vnet/ethernet/ethernet.h>
#include <vppinfra/hash.h>
#include <vppinfra/error.h>
#define NSIM_MAX_TX_BURST 32 /**< max packets in a tx burst */
typedef struct
{
f64 tx_time;
u32 rx_sw_if_index;
u32 tx_sw_if_index;
u32 output_next_index;
u32 buffer_index;
u32 pad; /* pad to 32-bytes */
} nsim_wheel_entry_t;
typedef struct
{
u32 wheel_size;
u32 cursize;
u32 head;
u32 tail;
nsim_wheel_entry_t *entries;
CLIB_CACHE_LINE_ALIGN_MARK (pad);
} nsim_wheel_t;
typedef struct nsim_node_ctx
{
vnet_feature_config_main_t *fcm;
f64 expires;
u32 *drop;
u32 *reord;
u16 *reord_nexts;
u8 *action;
u64 n_buffered;
u64 n_loss;
} nsim_node_ctx_t;
#define foreach_nsm_action \
_(DROP, "Packet loss") \
_(REORDER, "Packet reorder")
enum nsm_action_bit
{
#define _(sym, str) NSIM_ACTION_##sym##_BIT,
foreach_nsm_action
#undef _
};
typedef enum nsm_action
{
#define _(sym, str) NSIM_ACTION_##sym = 1 << NSIM_ACTION_##sym##_BIT,
foreach_nsm_action
#undef _
} nsm_action_e;
typedef struct
{
/* API message ID base */
u16 msg_id_base;
/* output feature arc index */
u16 arc_index;
/* Two interfaces, cross-connected with delay */
u32 sw_if_index0, sw_if_index1;
u32 output_next_index0, output_next_index1;
/* N interfaces, using the output feature */
u32 *output_next_index_by_sw_if_index;
/* Random seed for loss-rate simulation */
u32 seed;
/* Per-thread scheduler wheels */
nsim_wheel_t **wheel_by_thread;
/* Config parameters */
f64 delay;
f64 bandwidth;
f64 drop_fraction;
f64 reorder_fraction;
u32 packet_size;
u32 wheel_slots_per_wrk;
u32 poll_main_thread;
u64 mmap_size;
/* Wheels are configured */
int is_configured;
/* convenience */
vlib_main_t *vlib_main;
vnet_main_t *vnet_main;
} nsim_main_t;
extern nsim_main_t nsim_main;
extern vlib_node_registration_t nsim_node;
extern vlib_node_registration_t nsim_input_node;
#endif /* __included_nsim_h__ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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