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Diffstat (limited to 'src/vnet/ip/ip.h')
| -rw-r--r-- | src/vnet/ip/ip.h | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/src/vnet/ip/ip.h b/src/vnet/ip/ip.h new file mode 100644 index 00000000000..02a1a9636ee --- /dev/null +++ b/src/vnet/ip/ip.h @@ -0,0 +1,195 @@ +/* + * 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: + */ |