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/*
* Copyright (c) 2020 Doc.ai 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_wg_h__
#define __included_wg_h__
#include <wireguard/wireguard_index_table.h>
#include <wireguard/wireguard_messages.h>
#include <wireguard/wireguard_timer.h>
#include <vnet/buffer.h>
#define WG_DEFAULT_DATA_SIZE 2048
extern vlib_node_registration_t wg4_input_node;
extern vlib_node_registration_t wg6_input_node;
extern vlib_node_registration_t wg4_output_tun_node;
extern vlib_node_registration_t wg6_output_tun_node;
typedef struct wg_per_thread_data_t_
{
CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
vnet_crypto_op_t *crypto_ops;
vnet_crypto_async_frame_t **async_frames;
u8 data[WG_DEFAULT_DATA_SIZE];
} wg_per_thread_data_t;
typedef struct
{
/* convenience */
vlib_main_t *vlib_main;
u16 msg_id_base;
wg_index_table_t index_table;
u32 in4_fq_index;
u32 in6_fq_index;
u32 out4_fq_index;
u32 out6_fq_index;
wg_per_thread_data_t *per_thread_data;
u8 feature_init;
tw_timer_wheel_16t_2w_512sl_t timer_wheel;
/* operation mode flags (e.g. async) */
u8 op_mode_flags;
} wg_main_t;
typedef struct
{
/* wg post node index for async crypto */
u32 wg4_post_next;
u32 wg6_post_next;
} wg_async_post_next_t;
extern wg_async_post_next_t wg_encrypt_async_next;
extern wg_async_post_next_t wg_decrypt_async_next;
extern wg_main_t wg_main;
/**
* Wireguard operation mode
**/
#define foreach_wg_op_mode_flags _ (0, ASYNC, "async")
/**
* Helper function to set/unset and check op modes
**/
typedef enum wg_op_mode_flags_t_
{
#define _(v, f, s) WG_OP_MODE_FLAG_##f = 1 << v,
foreach_wg_op_mode_flags
#undef _
} __clib_packed wg_op_mode_flags_t;
#define _(a, v, s) \
always_inline int wg_op_mode_set_##v (void) \
{ \
return (wg_main.op_mode_flags |= WG_OP_MODE_FLAG_##v); \
} \
always_inline int wg_op_mode_unset_##v (void) \
{ \
return (wg_main.op_mode_flags &= ~WG_OP_MODE_FLAG_##v); \
} \
always_inline int wg_op_mode_is_set_##v (void) \
{ \
return (wg_main.op_mode_flags & WG_OP_MODE_FLAG_##v); \
}
foreach_wg_op_mode_flags
#undef _
typedef struct
{
u8 __pad[22];
u16 next_index;
} wg_post_data_t;
STATIC_ASSERT (sizeof (wg_post_data_t) <=
STRUCT_SIZE_OF (vnet_buffer_opaque_t, unused),
"Custom meta-data too large for vnet_buffer_opaque_t");
#define wg_post_data(b) \
((wg_post_data_t *) ((u8 *) ((b)->opaque) + \
STRUCT_OFFSET_OF (vnet_buffer_opaque_t, unused)))
#define WG_START_EVENT 1
void wg_feature_init (wg_main_t * wmp);
void wg_set_async_mode (u32 is_enabled);
void wg_secure_zero_memory (void *v, size_t n);
#endif /* __included_wg_h__ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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