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/*
* Copyright (c) 2021 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_nat_proto_h__
#define included_nat_proto_h__
#include <vnet/ip/ip.h>
#define foreach_nat_protocol \
_ (OTHER, 0, other, "other") \
_ (UDP, 1, udp, "udp") \
_ (TCP, 2, tcp, "tcp") \
_ (ICMP, 3, icmp, "icmp")
typedef enum
{
#define _(N, i, n, s) NAT_PROTOCOL_##N = i,
foreach_nat_protocol
#undef _
NAT_N_PROTOCOLS
} nat_protocol_t;
always_inline nat_protocol_t
ip_proto_to_nat_proto (ip_protocol_t ip_proto)
{
static const nat_protocol_t lookup_table[256] = {
[IP_PROTOCOL_TCP] = NAT_PROTOCOL_TCP,
[IP_PROTOCOL_UDP] = NAT_PROTOCOL_UDP,
[IP_PROTOCOL_ICMP] = NAT_PROTOCOL_ICMP,
[IP_PROTOCOL_ICMP6] = NAT_PROTOCOL_ICMP,
};
return lookup_table[ip_proto];
}
static_always_inline ip_protocol_t
nat_proto_to_ip_proto (nat_protocol_t nat_proto)
{
ASSERT (nat_proto <= NAT_PROTOCOL_ICMP);
static const u8 lookup_table[256] = {
[NAT_PROTOCOL_OTHER] = ~0,
[NAT_PROTOCOL_TCP] = IP_PROTOCOL_TCP,
[NAT_PROTOCOL_UDP] = IP_PROTOCOL_UDP,
[NAT_PROTOCOL_ICMP] = IP_PROTOCOL_ICMP,
};
ASSERT (NAT_PROTOCOL_OTHER == nat_proto || NAT_PROTOCOL_TCP == nat_proto ||
NAT_PROTOCOL_UDP == nat_proto || NAT_PROTOCOL_ICMP == nat_proto);
return lookup_table[nat_proto];
}
u8 *format_nat_protocol (u8 *s, va_list *args);
uword unformat_nat_protocol (unformat_input_t *input, va_list *args);
#endif /* included_nat_proto_h__ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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