/*--------------------------------------------------------------------------- * Copyright (c) 2009-2014 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 <stdbool.h> #include <vnet/fib/ip6_fib.h> #include <vnet/ip/ip.h> #include <vnet/ipip/ipip.h> #include <vnet/vnet.h> #include <vppinfra/error.h> #define SIXRD_DEFAULT_MTU 1480 /* 1500 - IPv4 header */ #define foreach_sixrd_error \ /* Must be first. */ \ _(NONE, "valid SIXRD packets") \ _(BAD_PROTOCOL, "bad protocol") \ _(SEC_CHECK, "security check failed") \ _(NO_TUNNEL, "no tunnel") typedef enum { #define _(sym, str) SIXRD_ERROR_##sym, foreach_sixrd_error #undef _ SIXRD_N_ERROR, } sixrd_error_t; extern sixrd_main_t sixrd_main; static_always_inline sixrd_tunnel_t * find_tunnel_by_ip4_address (ip4_address_t * ip) { sixrd_main_t *sm = &sixrd_main; uword *p; p = hash_get (sm->tunnel_by_ip, ip->as_u32); if (!p) return NULL; return pool_elt_at_index (sm->tunnels, p[0]); } static_always_inline sixrd_tunnel_t * ip4_sixrd_get_tunnel (u32 sdi, ip4_address_t * addr, u8 * error) { sixrd_tunnel_t *t = find_tunnel_by_ip4_address (addr); if (!t) { *error = SIXRD_ERROR_NO_TUNNEL; return NULL; } return t; } /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */