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/*
* tunnel_api.c - tunnel api
*
* Copyright (c) 2018 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 <vnet/api_errno.h>
#include <vnet/tunnel/tunnel_types_api.h>
#include <vnet/ip/ip_types_api.h>
#include <vnet/fib/fib_table.h>
#include <vnet/tunnel/tunnel_types.api_enum.h>
#include <vnet/tunnel/tunnel_types.api_types.h>
STATIC_ASSERT (sizeof (vl_api_tunnel_encap_decap_flags_t) ==
sizeof (tunnel_encap_decap_flags_t),
"tunnel API and internal flags enum size differ");
STATIC_ASSERT (sizeof (vl_api_tunnel_flags_t) == sizeof (tunnel_flags_t),
"tunnel API and internal flags enum size differ");
int
tunnel_encap_decap_flags_decode (vl_api_tunnel_encap_decap_flags_t f,
tunnel_encap_decap_flags_t * o)
{
if (f & ~TUNNEL_ENCAP_DECAP_FLAG_MASK)
/* unknown flags set */
return (VNET_API_ERROR_INVALID_VALUE_2);
*o = (tunnel_encap_decap_flags_t) f;
return (0);
}
vl_api_tunnel_encap_decap_flags_t
tunnel_encap_decap_flags_encode (tunnel_encap_decap_flags_t f)
{
return ((vl_api_tunnel_encap_decap_flags_t) f);
}
int
tunnel_flags_decode (vl_api_tunnel_flags_t f, tunnel_flags_t *o)
{
if (f & ~TUNNEL_FLAG_MASK)
/* unknown flags set */
return (VNET_API_ERROR_INVALID_VALUE_2);
*o = (tunnel_flags_t) f;
return (0);
}
vl_api_tunnel_flags_t
tunnel_flags_encode (tunnel_flags_t in)
{
vl_api_tunnel_flags_t out = 0;
if (in & TUNNEL_FLAG_TRACK_MTU)
out |= TUNNEL_API_FLAG_TRACK_MTU;
return (out);
}
int
tunnel_mode_decode (vl_api_tunnel_mode_t in, tunnel_mode_t * out)
{
switch (in)
{
#define _(n, v) \
case TUNNEL_API_MODE_##n: \
*out = TUNNEL_MODE_##n; \
return (0);
foreach_tunnel_mode
#undef _
}
return (VNET_API_ERROR_INVALID_VALUE_2);
}
vl_api_tunnel_mode_t
tunnel_mode_encode (tunnel_mode_t in)
{
vl_api_tunnel_mode_t out = TUNNEL_API_MODE_P2P;
switch (in)
{
#define _(n, v) \
case TUNNEL_MODE_##n: \
out = TUNNEL_API_MODE_##n; \
break;
foreach_tunnel_mode
#undef _
}
return (out);
}
int
tunnel_decode (const vl_api_tunnel_t *in, tunnel_t *out)
{
int rv;
ip_address_decode2 (&in->src, &out->t_src);
ip_address_decode2 (&in->dst, &out->t_dst);
if (ip_addr_version (&out->t_src) != ip_addr_version (&out->t_dst))
return (VNET_API_ERROR_INVALID_PROTOCOL);
if (0 == ip_address_cmp (&out->t_src, &out->t_dst))
return (VNET_API_ERROR_SAME_SRC_DST);
rv = tunnel_encap_decap_flags_decode (in->encap_decap_flags,
&out->t_encap_decap_flags);
if (rv)
return (rv);
rv = tunnel_mode_decode (in->mode, &out->t_mode);
if (rv)
return (rv);
rv = tunnel_flags_decode (in->flags, &out->t_flags);
if (rv)
return (rv);
out->t_table_id = clib_net_to_host_u32 (in->table_id);
out->t_fib_index = fib_table_find (
ip_address_family_to_fib_proto (ip_addr_version (&out->t_dst)),
out->t_table_id);
if (~0 == out->t_fib_index)
return (VNET_API_ERROR_NO_SUCH_FIB);
out->t_dscp = ip_dscp_decode (in->dscp);
out->t_hop_limit = in->hop_limit;
return (0);
}
void
tunnel_encode (const tunnel_t *in, vl_api_tunnel_t *out)
{
ip_address_encode2 (&in->t_src, &out->src);
ip_address_encode2 (&in->t_dst, &out->dst);
out->encap_decap_flags =
tunnel_encap_decap_flags_encode (in->t_encap_decap_flags);
out->mode = tunnel_mode_encode (in->t_mode);
out->flags = tunnel_flags_encode (in->t_flags);
out->table_id = clib_host_to_net_u32 (in->t_table_id);
out->dscp = ip_dscp_encode (in->t_dscp);
out->hop_limit = in->t_hop_limit;
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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