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/*
* Copyright (c) 2015 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.
*/
/*
* ip/ip.h: ip generic (4 or 6) main
*
* Copyright (c) 2008 Eliot Dresselhaus
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef included_ip_main_h
#define included_ip_main_h
#include <vppinfra/hash.h>
#include <vppinfra/heap.h> /* adjacency heap */
#include <vppinfra/ptclosure.h>
#include <vnet/vnet.h>
#include <vnet/ip/format.h>
#include <vnet/ip/ip_packet.h>
#include <vnet/ip/lookup.h>
#include <vnet/ip/tcp_packet.h>
#include <vnet/ip/udp_packet.h>
#include <vnet/ip/icmp46_packet.h>
#include <vnet/ip/ip4.h>
#include <vnet/ip/ip4_error.h>
#include <vnet/ip/ip4_packet.h>
#include <vnet/ip/icmp4.h>
#include <vnet/ip/ip6.h>
#include <vnet/ip/ip6_packet.h>
#include <vnet/ip/ip6_error.h>
#include <vnet/ip/icmp6.h>
#include <vnet/classify/vnet_classify.h>
/* Per protocol info. */
typedef struct
{
/* Protocol name (also used as hash key). */
u8 *name;
/* Protocol number. */
ip_protocol_t protocol;
/* Format function for this IP protocol. */
format_function_t *format_header;
/* Parser for header. */
unformat_function_t *unformat_header;
/* Parser for per-protocol matches. */
unformat_function_t *unformat_match;
/* Parser for packet generator edits for this protocol. */
unformat_function_t *unformat_pg_edit;
} ip_protocol_info_t;
/* Per TCP/UDP port info. */
typedef struct
{
/* Port name (used as hash key). */
u8 *name;
/* UDP/TCP port number in network byte order. */
u16 port;
/* Port specific format function. */
format_function_t *format_header;
/* Parser for packet generator edits for this protocol. */
unformat_function_t *unformat_pg_edit;
} tcp_udp_port_info_t;
typedef struct
{
/* Per IP protocol info. */
ip_protocol_info_t *protocol_infos;
/* Protocol info index hashed by 8 bit IP protocol. */
uword *protocol_info_by_protocol;
/* Hash table mapping IP protocol name (see protocols.def)
to protocol number. */
uword *protocol_info_by_name;
/* Per TCP/UDP port info. */
tcp_udp_port_info_t *port_infos;
/* Hash table from network-byte-order port to port info index. */
uword *port_info_by_port;
/* Hash table mapping TCP/UDP name to port info index. */
uword *port_info_by_name;
} ip_main_t;
extern ip_main_t ip_main;
clib_error_t *ip_main_init (vlib_main_t * vm);
static inline ip_protocol_info_t *
ip_get_protocol_info (ip_main_t * im, u32 protocol)
{
uword *p;
p = hash_get (im->protocol_info_by_protocol, protocol);
return p ? vec_elt_at_index (im->protocol_infos, p[0]) : 0;
}
static inline tcp_udp_port_info_t *
ip_get_tcp_udp_port_info (ip_main_t * im, u32 port)
{
uword *p;
p = hash_get (im->port_info_by_port, port);
return p ? vec_elt_at_index (im->port_infos, p[0]) : 0;
}
always_inline ip_csum_t
ip_incremental_checksum_buffer (vlib_main_t * vm,
vlib_buffer_t * first_buffer,
u32 first_buffer_offset,
u32 n_bytes_to_checksum, ip_csum_t sum)
{
vlib_buffer_t *b = first_buffer;
u32 n_bytes_left = n_bytes_to_checksum;
ASSERT (b->current_length >= first_buffer_offset);
void *h;
u32 n;
n = clib_min (n_bytes_left, b->current_length);
h = vlib_buffer_get_current (b) + first_buffer_offset;
sum = ip_incremental_checksum (sum, h, n);
if (PREDICT_FALSE (b->flags & VLIB_BUFFER_NEXT_PRESENT))
{
while (1)
{
n_bytes_left -= n;
if (n_bytes_left == 0)
break;
b = vlib_get_buffer (vm, b->next_buffer);
n = clib_min (n_bytes_left, b->current_length);
h = vlib_buffer_get_current (b);
sum = ip_incremental_checksum (sum, h, n);
}
}
return sum;
}
void ip_del_all_interface_addresses (vlib_main_t * vm, u32 sw_if_index);
extern vlib_node_registration_t ip4_inacl_node;
extern vlib_node_registration_t ip6_inacl_node;
#endif /* included_ip_main_h */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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