From 7cd468a3d7dee7d6c92f69a0bb7061ae208ec727 Mon Sep 17 00:00:00 2001 From: Damjan Marion Date: Mon, 19 Dec 2016 23:05:39 +0100 Subject: Reorganize source tree to use single autotools instance Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23 Signed-off-by: Damjan Marion --- src/vnet/ip/ip_frag.h | 96 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 96 insertions(+) create mode 100644 src/vnet/ip/ip_frag.h (limited to 'src/vnet/ip/ip_frag.h') diff --git a/src/vnet/ip/ip_frag.h b/src/vnet/ip/ip_frag.h new file mode 100644 index 00000000..348f5a2f --- /dev/null +++ b/src/vnet/ip/ip_frag.h @@ -0,0 +1,96 @@ +/*--------------------------------------------------------------------------- + * 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. + *--------------------------------------------------------------------------- + */ +/* + * IPv4 and IPv6 Fragmentation Nodes + * + * A packet sent to those nodes require the following + * buffer attributes to be set: + * ip_frag.header_offset : + * Where to find the IPv4 (or IPv6) header in the packet. Previous + * bytes are left untouched and copied in every fragment. The fragments + * are then appended. This option is used for fragmented packets + * that are encapsulated. + * ip_frag.mtu : + * Maximum size of IP packets, header included, but ignoring + * the 'ip_frag.header_offset' copied bytes. + * ip_frag.next_index : + * One of ip_frag_next_t, indicating to which exit node the fragments + * should be sent to. + * + */ + +#ifndef IP_FRAG_H +#define IP_FRAG_H + +#include + +#define IP_FRAG_FLAG_IP4_HEADER 0x01 //Encapsulating IPv4 header +#define IP_FRAG_FLAG_IP6_HEADER 0x02 //Encapsulating IPv6 header + +#define IP4_FRAG_NODE_NAME "ip4-frag" +#define IP6_FRAG_NODE_NAME "ip6-frag" + +extern vlib_node_registration_t ip4_frag_node; +extern vlib_node_registration_t ip6_frag_node; + +typedef enum +{ + IP4_FRAG_NEXT_IP4_LOOKUP, + IP4_FRAG_NEXT_IP6_LOOKUP, + IP4_FRAG_NEXT_ICMP_ERROR, + IP4_FRAG_NEXT_DROP, + IP4_FRAG_N_NEXT +} ip4_frag_next_t; + +typedef enum +{ + IP6_FRAG_NEXT_IP4_LOOKUP, + IP6_FRAG_NEXT_IP6_LOOKUP, + IP6_FRAG_NEXT_DROP, + IP6_FRAG_N_NEXT +} ip6_frag_next_t; + +#define foreach_ip_frag_error \ + /* Must be first. */ \ + _(NONE, "packet fragmented") \ + _(SMALL_PACKET, "packet smaller than MTU") \ + _(FRAGMENT_SENT, "number of sent fragments") \ + _(CANT_FRAGMENT_HEADER, "can't fragment header") \ + _(DONT_FRAGMENT_SET, "can't fragment this packet") \ + _(MALFORMED, "malformed packet") \ + _(MEMORY, "could not allocate buffer") \ + _(UNKNOWN, "unknown error") + +typedef enum +{ +#define _(sym,str) IP_FRAG_ERROR_##sym, + foreach_ip_frag_error +#undef _ + IP_FRAG_N_ERROR, +} ip_frag_error_t; + +void ip_frag_set_vnet_buffer (vlib_buffer_t * b, u16 offset, u16 mtu, + u8 next_index, u8 flags); + +#endif /* ifndef IP_FRAG_H */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ -- cgit 1.2.3-korg