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/*
* Copyright (c) 2016 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 VNET_VNET_URI_TRANSPORT_H_
#define VNET_VNET_URI_TRANSPORT_H_
#include <vnet/vnet.h>
#include <vnet/ip/ip.h>
#include <vppinfra/bihash_16_8.h>
#include <vppinfra/bihash_48_8.h>
/*
* Protocol independent transport properties associated to a session
*/
typedef struct _transport_connection
{
ip46_address_t rmt_ip; /**< Remote IP */
ip46_address_t lcl_ip; /**< Local IP */
u16 lcl_port; /**< Local port */
u16 rmt_port; /**< Remote port */
u8 proto; /**< Transport protocol id */
u32 s_index; /**< Parent session index */
u32 c_index; /**< Connection index in transport pool */
u8 is_ip4; /**< Flag if IP4 connection */
u32 thread_index; /**< Worker-thread index */
/** Macros for 'derived classes' where base is named "connection" */
#define c_lcl_ip connection.lcl_ip
#define c_rmt_ip connection.rmt_ip
#define c_lcl_ip4 connection.lcl_ip.ip4
#define c_rmt_ip4 connection.rmt_ip.ip4
#define c_lcl_ip6 connection.lcl_ip.ip6
#define c_rmt_ip6 connection.rmt_ip.ip6
#define c_lcl_port connection.lcl_port
#define c_rmt_port connection.rmt_port
#define c_proto connection.proto
#define c_state connection.state
#define c_s_index connection.s_index
#define c_c_index connection.c_index
#define c_is_ip4 connection.is_ip4
#define c_thread_index connection.thread_index
} transport_connection_t;
/*
* Transport protocol virtual function table
*/
typedef struct _transport_proto_vft
{
/*
* Setup
*/
u32 (*bind) (vlib_main_t *, u32, ip46_address_t *, u16);
u32 (*unbind) (vlib_main_t *, u32);
int (*open) (ip46_address_t * addr, u16 port_host_byte_order);
void (*close) (u32 conn_index, u32 thread_index);
void (*cleanup) (u32 conn_index, u32 thread_index);
/*
* Transmission
*/
u32 (*push_header) (transport_connection_t * tconn, vlib_buffer_t * b);
u16 (*send_mss) (transport_connection_t * tc);
u32 (*send_space) (transport_connection_t * tc);
u32 (*rx_fifo_offset) (transport_connection_t * tc);
/*
* Connection retrieval
*/
transport_connection_t *(*get_connection) (u32 conn_idx, u32 thread_idx);
transport_connection_t *(*get_listener) (u32 conn_index);
transport_connection_t *(*get_half_open) (u32 conn_index);
/*
* Format
*/
u8 *(*format_connection) (u8 * s, va_list * args);
u8 *(*format_listener) (u8 * s, va_list * args);
u8 *(*format_half_open) (u8 * s, va_list * args);
} transport_proto_vft_t;
/* 16 octets */
typedef CLIB_PACKED (struct
{
union
{
struct
{
ip4_address_t src; ip4_address_t dst;
u16 src_port;
u16 dst_port;
/* align by making this 4 octets even though its a 1-bit field
* NOTE: avoid key overlap with other transports that use 5 tuples for
* session identification.
*/
u32 proto;
};
u64 as_u64[2];
};
}) v4_connection_key_t;
typedef CLIB_PACKED (struct
{
union
{
struct
{
/* 48 octets */
ip6_address_t src; ip6_address_t dst;
u16 src_port;
u16 dst_port; u32 proto; u8 unused_for_now[8];
}; u64 as_u64[6];
};
}) v6_connection_key_t;
typedef clib_bihash_kv_16_8_t session_kv4_t;
typedef clib_bihash_kv_48_8_t session_kv6_t;
always_inline void
make_v4_ss_kv (session_kv4_t * kv, ip4_address_t * lcl, ip4_address_t * rmt,
u16 lcl_port, u16 rmt_port, u8 proto)
{
v4_connection_key_t key;
memset (&key, 0, sizeof (v4_connection_key_t));
key.src.as_u32 = lcl->as_u32;
key.dst.as_u32 = rmt->as_u32;
key.src_port = lcl_port;
key.dst_port = rmt_port;
key.proto = proto;
kv->key[0] = key.as_u64[0];
kv->key[1] = key.as_u64[1];
kv->value = ~0ULL;
}
always_inline void
make_v4_listener_kv (session_kv4_t * kv, ip4_address_t * lcl, u16 lcl_port,
u8 proto)
{
v4_connection_key_t key;
memset (&key, 0, sizeof (v4_connection_key_t));
key.src.as_u32 = lcl->as_u32;
key.dst.as_u32 = 0;
key.src_port = lcl_port;
key.dst_port = 0;
key.proto = proto;
kv->key[0] = key.as_u64[0];
kv->key[1] = key.as_u64[1];
kv->value = ~0ULL;
}
always_inline void
make_v4_ss_kv_from_tc (session_kv4_t * kv, transport_connection_t * t)
{
return make_v4_ss_kv (kv, &t->lcl_ip.ip4, &t->rmt_ip.ip4, t->lcl_port,
t->rmt_port, t->proto);
}
always_inline void
make_v6_ss_kv (session_kv6_t * kv, ip6_address_t * lcl, ip6_address_t * rmt,
u16 lcl_port, u16 rmt_port, u8 proto)
{
v6_connection_key_t key;
memset (&key, 0, sizeof (v6_connection_key_t));
key.src.as_u64[0] = lcl->as_u64[0];
key.src.as_u64[1] = lcl->as_u64[1];
key.dst.as_u64[0] = rmt->as_u64[0];
key.dst.as_u64[1] = rmt->as_u64[1];
key.src_port = lcl_port;
key.dst_port = rmt_port;
key.proto = proto;
kv->key[0] = key.as_u64[0];
kv->key[1] = key.as_u64[1];
kv->key[2] = 0;
kv->key[3] = 0;
kv->key[4] = 0;
kv->key[5] = 0;
kv->value = ~0ULL;
}
always_inline void
make_v6_listener_kv (session_kv6_t * kv, ip6_address_t * lcl, u16 lcl_port,
u8 proto)
{
v6_connection_key_t key;
memset (&key, 0, sizeof (v6_connection_key_t));
key.src.as_u64[0] = lcl->as_u64[0];
key.src.as_u64[1] = lcl->as_u64[1];
key.dst.as_u64[0] = 0;
key.dst.as_u64[1] = 0;
key.src_port = lcl_port;
key.dst_port = 0;
key.proto = proto;
kv->key[0] = key.as_u64[0];
kv->key[1] = key.as_u64[1];
kv->key[2] = 0;
kv->key[3] = 0;
kv->key[4] = 0;
kv->key[5] = 0;
kv->value = ~0ULL;
}
always_inline void
make_v6_ss_kv_from_tc (session_kv6_t * kv, transport_connection_t * t)
{
make_v6_ss_kv (kv, &t->lcl_ip.ip6, &t->rmt_ip.ip6, t->lcl_port,
t->rmt_port, t->proto);
}
typedef struct _transport_endpoint
{
ip46_address_t ip;
u16 port;
u8 is_ip4;
u32 vrf;
} transport_endpoint_t;
typedef clib_bihash_24_8_t transport_endpoint_table_t;
#define TRANSPORT_ENDPOINT_INVALID_INDEX ((u32)~0)
u32
transport_endpoint_lookup (transport_endpoint_table_t * ht,
ip46_address_t * ip, u16 port);
void transport_endpoint_table_add (transport_endpoint_table_t * ht,
transport_endpoint_t * te, u32 value);
void transport_endpoint_table_del (transport_endpoint_table_t * ht,
transport_endpoint_t * te);
#endif /* VNET_VNET_URI_TRANSPORT_H_ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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