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/*
* Copyright (c) 2017-2019 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_vppcom_h
#define included_vppcom_h
#include <netdb.h>
#include <errno.h>
#include <sys/fcntl.h>
#include <sys/poll.h>
#include <sys/epoll.h>
/* *INDENT-OFF* */
#ifdef __cplusplus
extern "C"
{
#endif
/* *INDENT-ON* */
/*
* VPPCOM Public API Definitions, Enums, and Data Structures
*/
#define INVALID_SESSION_ID ((u32)~0)
#define VPPCOM_CONF_DEFAULT "/etc/vpp/vcl.conf"
#define VPPCOM_ENV_CONF "VCL_CONFIG"
#define VPPCOM_ENV_DEBUG "VCL_DEBUG"
#define VPPCOM_ENV_API_PREFIX "VCL_API_PREFIX"
#define VPPCOM_ENV_APP_PROXY_TRANSPORT_TCP "VCL_APP_PROXY_TRANSPORT_TCP"
#define VPPCOM_ENV_APP_PROXY_TRANSPORT_UDP "VCL_APP_PROXY_TRANSPORT_UDP"
#define VPPCOM_ENV_APP_NAMESPACE_ID "VCL_APP_NAMESPACE_ID"
#define VPPCOM_ENV_APP_NAMESPACE_SECRET "VCL_APP_NAMESPACE_SECRET"
#define VPPCOM_ENV_APP_SCOPE_LOCAL "VCL_APP_SCOPE_LOCAL"
#define VPPCOM_ENV_APP_SCOPE_GLOBAL "VCL_APP_SCOPE_GLOBAL"
#define VPPCOM_ENV_VPP_API_SOCKET "VCL_VPP_API_SOCKET"
typedef enum
{
VPPCOM_PROTO_TCP = 0,
VPPCOM_PROTO_UDP,
VPPCOM_PROTO_NONE,
VPPCOM_PROTO_TLS,
VPPCOM_PROTO_QUIC,
} vppcom_proto_t;
static inline char *
vppcom_proto_str (vppcom_proto_t proto)
{
char *proto_str;
switch (proto)
{
case VPPCOM_PROTO_TCP:
proto_str = "TCP";
break;
case VPPCOM_PROTO_UDP:
proto_str = "UDP";
break;
case VPPCOM_PROTO_TLS:
proto_str = "TLS";
break;
case VPPCOM_PROTO_QUIC:
proto_str = "QUIC";
break;
default:
proto_str = "UNKNOWN";
break;
}
return proto_str;
}
static inline int
vcl_proto_is_dgram (uint8_t proto)
{
return proto == VPPCOM_PROTO_UDP;
}
typedef enum
{
VPPCOM_IS_IP6 = 0,
VPPCOM_IS_IP4,
} vppcom_is_ip4_t;
typedef struct vppcom_endpt_t_
{
uint8_t is_cut_thru;
uint8_t is_ip4;
uint8_t *ip;
uint16_t port;
uint64_t parent_handle;
} vppcom_endpt_t;
typedef uint32_t vcl_session_handle_t;
typedef enum
{
VPPCOM_OK = 0,
VPPCOM_EAGAIN = -EAGAIN,
VPPCOM_EWOULDBLOCK = -EWOULDBLOCK,
VPPCOM_EINPROGRESS = -EINPROGRESS,
VPPCOM_EFAULT = -EFAULT,
VPPCOM_ENOMEM = -ENOMEM,
VPPCOM_EINVAL = -EINVAL,
VPPCOM_EBADFD = -EBADFD,
VPPCOM_EAFNOSUPPORT = -EAFNOSUPPORT,
VPPCOM_ECONNABORTED = -ECONNABORTED,
VPPCOM_ECONNRESET = -ECONNRESET,
VPPCOM_ENOTCONN = -ENOTCONN,
VPPCOM_ECONNREFUSED = -ECONNREFUSED,
VPPCOM_ETIMEDOUT = -ETIMEDOUT,
VPPCOM_EEXIST = -EEXIST
} vppcom_error_t;
typedef enum
{
VPPCOM_ATTR_GET_NREAD,
VPPCOM_ATTR_GET_NWRITE,
VPPCOM_ATTR_GET_FLAGS,
VPPCOM_ATTR_SET_FLAGS,
VPPCOM_ATTR_GET_LCL_ADDR,
VPPCOM_ATTR_SET_LCL_ADDR,
VPPCOM_ATTR_GET_PEER_ADDR,
VPPCOM_ATTR_GET_LIBC_EPFD,
VPPCOM_ATTR_SET_LIBC_EPFD,
VPPCOM_ATTR_GET_PROTOCOL,
VPPCOM_ATTR_GET_LISTEN,
VPPCOM_ATTR_GET_ERROR,
VPPCOM_ATTR_GET_TX_FIFO_LEN,
VPPCOM_ATTR_SET_TX_FIFO_LEN,
VPPCOM_ATTR_GET_RX_FIFO_LEN,
VPPCOM_ATTR_SET_RX_FIFO_LEN,
VPPCOM_ATTR_GET_REUSEADDR,
VPPCOM_ATTR_SET_REUSEADDR,
VPPCOM_ATTR_GET_REUSEPORT,
VPPCOM_ATTR_SET_REUSEPORT,
VPPCOM_ATTR_GET_BROADCAST,
VPPCOM_ATTR_SET_BROADCAST,
VPPCOM_ATTR_GET_V6ONLY,
VPPCOM_ATTR_SET_V6ONLY,
VPPCOM_ATTR_GET_KEEPALIVE,
VPPCOM_ATTR_SET_KEEPALIVE,
VPPCOM_ATTR_GET_TCP_NODELAY,
VPPCOM_ATTR_SET_TCP_NODELAY,
VPPCOM_ATTR_GET_TCP_KEEPIDLE,
VPPCOM_ATTR_SET_TCP_KEEPIDLE,
VPPCOM_ATTR_GET_TCP_KEEPINTVL,
VPPCOM_ATTR_SET_TCP_KEEPINTVL,
VPPCOM_ATTR_GET_TCP_USER_MSS,
VPPCOM_ATTR_SET_TCP_USER_MSS,
VPPCOM_ATTR_SET_SHUT,
VPPCOM_ATTR_GET_SHUT,
} vppcom_attr_op_t;
typedef struct _vcl_poll
{
uint32_t fds_ndx;
vcl_session_handle_t sh;
short events;
short revents;
} vcl_poll_t;
typedef struct vppcom_data_segment_
{
unsigned char *data;
uint32_t len;
} vppcom_data_segment_t;
typedef vppcom_data_segment_t vppcom_data_segments_t[2];
typedef unsigned long vcl_si_set;
/*
* VPPCOM Public API Functions
*/
static inline const char *
vppcom_retval_str (int retval)
{
char *st;
switch (retval)
{
case VPPCOM_OK:
st = "VPPCOM_OK";
break;
case VPPCOM_EAGAIN:
st = "VPPCOM_EAGAIN";
break;
case VPPCOM_EFAULT:
st = "VPPCOM_EFAULT";
break;
case VPPCOM_ENOMEM:
st = "VPPCOM_ENOMEM";
break;
case VPPCOM_EINVAL:
st = "VPPCOM_EINVAL";
break;
case VPPCOM_EBADFD:
st = "VPPCOM_EBADFD";
break;
case VPPCOM_EAFNOSUPPORT:
st = "VPPCOM_EAFNOSUPPORT";
break;
case VPPCOM_ECONNABORTED:
st = "VPPCOM_ECONNABORTED";
break;
case VPPCOM_ECONNRESET:
st = "VPPCOM_ECONNRESET";
break;
case VPPCOM_ENOTCONN:
st = "VPPCOM_ENOTCONN";
break;
case VPPCOM_ECONNREFUSED:
st = "VPPCOM_ECONNREFUSED";
break;
case VPPCOM_ETIMEDOUT:
st = "VPPCOM_ETIMEDOUT";
break;
default:
st = "UNKNOWN_STATE";
break;
}
return st;
}
/* TBD: make these constructor/destructor function */
extern int vppcom_app_create (char *app_name);
extern void vppcom_app_destroy (void);
extern int vppcom_session_create (uint8_t proto, uint8_t is_nonblocking);
extern int vppcom_session_close (uint32_t session_handle);
extern int vppcom_session_bind (uint32_t session_handle, vppcom_endpt_t * ep);
extern int vppcom_session_listen (uint32_t session_handle, uint32_t q_len);
extern int vppcom_session_accept (uint32_t session_handle,
vppcom_endpt_t * client_ep, uint32_t flags);
extern int vppcom_session_connect (uint32_t session_handle,
vppcom_endpt_t * server_ep);
extern int vppcom_session_stream_connect (uint32_t session_handle,
uint32_t parent_session_handle);
extern int vppcom_session_read (uint32_t session_handle, void *buf, size_t n);
extern int vppcom_session_write (uint32_t session_handle, void *buf,
size_t n);
extern int vppcom_session_write_msg (uint32_t session_handle, void *buf,
size_t n);
extern int vppcom_select (int n_bits, vcl_si_set * read_map,
vcl_si_set * write_map, vcl_si_set * except_map,
double wait_for_time);
extern int vppcom_epoll_create (void);
extern int vppcom_epoll_ctl (uint32_t vep_handle, int op,
uint32_t session_handle,
struct epoll_event *event);
extern int vppcom_epoll_wait (uint32_t vep_handle, struct epoll_event *events,
int maxevents, double wait_for_time);
extern int vppcom_session_attr (uint32_t session_handle, uint32_t op,
void *buffer, uint32_t * buflen);
extern int vppcom_session_recvfrom (uint32_t session_handle, void *buffer,
uint32_t buflen, int flags,
vppcom_endpt_t * ep);
extern int vppcom_session_sendto (uint32_t session_handle, void *buffer,
uint32_t buflen, int flags,
vppcom_endpt_t * ep);
extern int vppcom_poll (vcl_poll_t * vp, uint32_t n_sids,
double wait_for_time);
extern int vppcom_mq_epoll_fd (void);
extern int vppcom_session_index (vcl_session_handle_t session_handle);
extern int vppcom_session_worker (vcl_session_handle_t session_handle);
extern int vppcom_session_read_segments (uint32_t session_handle,
vppcom_data_segments_t ds);
extern void vppcom_session_free_segments (uint32_t session_handle,
vppcom_data_segments_t ds);
extern int vppcom_session_tls_add_cert (uint32_t session_handle, char *cert,
uint32_t cert_len);
extern int vppcom_session_tls_add_key (uint32_t session_handle, char *key,
uint32_t key_len);
extern int vppcom_data_segment_copy (void *buf, vppcom_data_segments_t ds,
uint32_t max_bytes);
extern int vppcom_unformat_proto (uint8_t * proto, char *proto_str);
extern int vppcom_session_is_connectable_listener (uint32_t session_handle);
extern int vppcom_session_listener (uint32_t session_handle);
extern int vppcom_session_n_accepted (uint32_t session_handle);
/**
* Request from application to register a new worker
*
* Expectation is that applications will make use of this after a new pthread
* is spawned.
*/
extern int vppcom_worker_register (void);
/**
* Unregister current worker
*/
extern void vppcom_worker_unregister (void);
/**
* Retrieve current worker index
*/
extern int vppcom_worker_index (void);
/**
* Set current worker index
*/
extern void vppcom_worker_index_set (int);
/**
* Returns the current worker's message queues epoll fd
*
* This only works if vcl is configured to do eventfd based message queue
* notifications.
*/
extern int vppcom_worker_mqs_epfd (void);
/* *INDENT-OFF* */
#ifdef __cplusplus
}
#endif
/* *INDENT-ON* */
#endif /* included_vppcom_h */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|
