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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.
*/
#include <vppinfra/socket.h>
#include <vnet/vnet.h>
#include <vnet/session/session_table.h>
#ifndef SRC_VNET_SESSION_APPLICATION_NAMESPACE_H_
#define SRC_VNET_SESSION_APPLICATION_NAMESPACE_H_
typedef struct _app_namespace
{
/**
* Local sw_if_index that supports transport connections for this namespace
*/
u32 sw_if_index;
/**
* Network namespace (e.g., fib_index associated to the sw_if_index)
* wherein connections are to be established. Since v4 and v6 fibs are
* separate, we actually need to keep pointers to both.
*/
u32 ip4_fib_index;
u32 ip6_fib_index;
/**
* Local session table associated to ns
*/
u32 local_table_index;
/**
* Secret apps need to provide to authorize attachment to the namespace
*/
u64 ns_secret;
/**
* Application namespace id
*/
u8 *ns_id;
/**
* Linux netns if one was provided
*/
u8 *netns;
/**
* Name of socket applications can use to attach to session layer
*/
u8 *sock_name;
/**
* Pool of active application sockets
*/
clib_socket_t *app_sockets;
} app_namespace_t;
typedef struct _vnet_app_namespace_add_del_args
{
u8 *ns_id;
u8 *netns;
u8 *sock_name;
u64 secret;
u32 sw_if_index;
u32 ip4_fib_id;
u32 ip6_fib_id;
u8 is_add;
} vnet_app_namespace_add_del_args_t;
#define APP_NAMESPACE_INVALID_INDEX ((u32)~0)
app_namespace_t *app_namespace_alloc (const u8 *ns_id);
app_namespace_t *app_namespace_get (u32 index);
app_namespace_t *app_namespace_get_from_id (const u8 *ns_id);
u32 app_namespace_index (app_namespace_t * app_ns);
const u8 *app_namespace_id (app_namespace_t * app_ns);
const u8 *app_namespace_id_from_index (u32 index);
u32 app_namespace_index_from_id (const u8 *ns_id);
void app_namespaces_init (void);
int vnet_app_namespace_add_del (vnet_app_namespace_add_del_args_t * a);
u32 app_namespace_get_fib_index (app_namespace_t * app_ns, u8 fib_proto);
session_table_t *app_namespace_get_local_table (app_namespace_t * app_ns);
always_inline app_namespace_t *
app_namespace_get_default (void)
{
return app_namespace_get (0);
}
typedef struct app_ns_api_handle_
{
union
{
struct
{
/** app_ns index for files and app_index for sockets */
u32 l_index;
/** socket index for files and clib file index for sockets */
u32 u_index;
};
u64 as_u64;
};
#define aah_app_ns_index l_index
#define aah_app_wrk_index l_index
#define aah_sock_index u_index
#define aah_file_index u_index
} __attribute__ ((aligned (sizeof (u64)))) app_ns_api_handle_t;
STATIC_ASSERT (sizeof (app_ns_api_handle_t) == sizeof (u64), "not u64");
static inline clib_socket_t *
appns_sapi_alloc_socket (app_namespace_t * app_ns)
{
clib_socket_t *cs;
pool_get_zero (app_ns->app_sockets, cs);
return cs;
}
static inline clib_socket_t *
appns_sapi_get_socket (app_namespace_t * app_ns, u32 sock_index)
{
if (pool_is_free_index (app_ns->app_sockets, sock_index))
return 0;
return pool_elt_at_index (app_ns->app_sockets, sock_index);
}
static inline void
appns_sapi_free_socket (app_namespace_t * app_ns, clib_socket_t * cs)
{
pool_put (app_ns->app_sockets, cs);
}
static inline u32
appns_sapi_socket_index (app_namespace_t * app_ns, clib_socket_t * cs)
{
return (cs - app_ns->app_sockets);
}
static inline u32
appns_sapi_socket_handle (app_namespace_t * app_ns, clib_socket_t * cs)
{
return app_namespace_index (app_ns) << 16 | (cs - app_ns->app_sockets);
}
static inline u32
appns_sapi_handle_sock_index (u32 sapi_sock_handle)
{
return sapi_sock_handle & 0xffff;
}
int appns_sapi_add_ns_socket (app_namespace_t * app_ns);
void appns_sapi_del_ns_socket (app_namespace_t *app_ns);
u8 appns_sapi_enabled (void);
void appns_sapi_enable (void);
#endif /* SRC_VNET_SESSION_APPLICATION_NAMESPACE_H_ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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