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Diffstat (limited to 'vnet/vnet/ip/ip4.h')
-rw-r--r-- | vnet/vnet/ip/ip4.h | 322 |
1 files changed, 0 insertions, 322 deletions
diff --git a/vnet/vnet/ip/ip4.h b/vnet/vnet/ip/ip4.h deleted file mode 100644 index 0331c44563e..00000000000 --- a/vnet/vnet/ip/ip4.h +++ /dev/null @@ -1,322 +0,0 @@ -/* - * 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/ip4.h: ip4 main include file - * - * 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_ip4_h -#define included_ip_ip4_h - -#include <vnet/ip/ip4_mtrie.h> -#include <vnet/ip/ip4_packet.h> -#include <vnet/ip/lookup.h> -#include <vnet/feature/feature.h> - -typedef struct ip4_fib_t -{ - /* Hash table for each prefix length mapping. */ - uword *fib_entry_by_dst_address[33]; - - /* Mtrie for fast lookups. Hash is used to maintain overlapping prefixes. */ - ip4_fib_mtrie_t mtrie; - - /* Table ID (hash key) for this FIB. */ - u32 table_id; - - /* Index into FIB vector. */ - u32 index; - - /* flow hash configuration */ - flow_hash_config_t flow_hash_config; - - /* N-tuple classifier indices */ - u32 fwd_classify_table_index; - u32 rev_classify_table_index; - -} ip4_fib_t; - -struct ip4_main_t; - -typedef void (ip4_add_del_interface_address_function_t) - (struct ip4_main_t * im, - uword opaque, - u32 sw_if_index, - ip4_address_t * address, - u32 address_length, u32 if_address_index, u32 is_del); - -typedef struct -{ - ip4_add_del_interface_address_function_t *function; - uword function_opaque; -} ip4_add_del_interface_address_callback_t; - -/** - * @brief IPv4 main type. - * - * State of IPv4 VPP processing including: - * - FIBs - * - Feature indices used in feature topological sort - * - Feature node run time references - */ - -typedef struct ip4_main_t -{ - ip_lookup_main_t lookup_main; - - /** Vector of FIBs. */ - struct fib_table_t_ *fibs; - - u32 fib_masks[33]; - - /** Table index indexed by software interface. */ - u32 *fib_index_by_sw_if_index; - - /* IP4 enabled count by software interface */ - u8 *ip_enabled_by_sw_if_index; - - /** Hash table mapping table id to fib index. - ID space is not necessarily dense; index space is dense. */ - uword *fib_index_by_table_id; - - /** Functions to call when interface address changes. */ - ip4_add_del_interface_address_callback_t - * add_del_interface_address_callbacks; - - /** Template used to generate IP4 ARP packets. */ - vlib_packet_template_t ip4_arp_request_packet_template; - - /** Seed for Jenkins hash used to compute ip4 flow hash. */ - u32 flow_hash_seed; - - /** @brief Template information for VPP generated packets */ - struct - { - /** TTL to use for host generated packets. */ - u8 ttl; - - /** TOS byte to use for host generated packets. */ - u8 tos; - - u8 pad[2]; - } host_config; -} ip4_main_t; - -/** Global ip4 main structure. */ -extern ip4_main_t ip4_main; - -/** Global ip4 input node. Errors get attached to ip4 input node. */ -extern vlib_node_registration_t ip4_input_node; -extern vlib_node_registration_t ip4_lookup_node; -extern vlib_node_registration_t ip4_rewrite_node; -extern vlib_node_registration_t ip4_rewrite_local_node; -extern vlib_node_registration_t ip4_arp_node; -extern vlib_node_registration_t ip4_glean_node; -extern vlib_node_registration_t ip4_midchain_node; - -always_inline uword -ip4_destination_matches_route (const ip4_main_t * im, - const ip4_address_t * key, - const ip4_address_t * dest, uword dest_length) -{ - return 0 == ((key->data_u32 ^ dest->data_u32) & im->fib_masks[dest_length]); -} - -always_inline uword -ip4_destination_matches_interface (ip4_main_t * im, - ip4_address_t * key, - ip_interface_address_t * ia) -{ - ip4_address_t *a = ip_interface_address_get_address (&im->lookup_main, ia); - return ip4_destination_matches_route (im, key, a, ia->address_length); -} - -/* As above but allows for unaligned destinations (e.g. works right from IP header of packet). */ -always_inline uword -ip4_unaligned_destination_matches_route (ip4_main_t * im, - ip4_address_t * key, - ip4_address_t * dest, - uword dest_length) -{ - return 0 == - ((clib_mem_unaligned (&key->data_u32, u32) ^ dest-> - data_u32) & im->fib_masks[dest_length]); -} - -always_inline int -ip4_src_address_for_packet (ip_lookup_main_t * lm, - u32 sw_if_index, ip4_address_t * src) -{ - u32 if_add_index = lm->if_address_pool_index_by_sw_if_index[sw_if_index]; - if (PREDICT_TRUE (if_add_index != ~0)) - { - ip_interface_address_t *if_add = - pool_elt_at_index (lm->if_address_pool, if_add_index); - ip4_address_t *if_ip = ip_interface_address_get_address (lm, if_add); - *src = *if_ip; - return 0; - } - else - { - ASSERT (0); - src->as_u32 = 0; - } - return (!0); -} - -/* Find interface address which matches destination. */ -always_inline ip4_address_t * -ip4_interface_address_matching_destination (ip4_main_t * im, - ip4_address_t * dst, - u32 sw_if_index, - ip_interface_address_t ** - result_ia) -{ - ip_lookup_main_t *lm = &im->lookup_main; - ip_interface_address_t *ia; - ip4_address_t *result = 0; - - /* *INDENT-OFF* */ - foreach_ip_interface_address (lm, ia, sw_if_index, - 1 /* honor unnumbered */, - ({ - ip4_address_t * a = ip_interface_address_get_address (lm, ia); - if (ip4_destination_matches_route (im, dst, a, ia->address_length)) - { - result = a; - break; - } - })); - /* *INDENT-ON* */ - if (result_ia) - *result_ia = result ? ia : 0; - return result; -} - -ip4_address_t *ip4_interface_first_address (ip4_main_t * im, u32 sw_if_index, - ip_interface_address_t ** - result_ia); - -clib_error_t *ip4_add_del_interface_address (vlib_main_t * vm, - u32 sw_if_index, - ip4_address_t * address, - u32 address_length, u32 is_del); - -void ip4_sw_interface_enable_disable (u32 sw_if_index, u32 is_enable); - -int ip4_address_compare (ip4_address_t * a1, ip4_address_t * a2); - -/* Send an ARP request to see if given destination is reachable on given interface. */ -clib_error_t *ip4_probe_neighbor (vlib_main_t * vm, ip4_address_t * dst, - u32 sw_if_index); - -clib_error_t *ip4_set_arp_limit (u32 arp_limit); - -uword -ip4_udp_register_listener (vlib_main_t * vm, - u16 dst_port, u32 next_node_index); - -void -ip4_icmp_register_type (vlib_main_t * vm, icmp4_type_t type, u32 node_index); - -u16 ip4_tcp_udp_compute_checksum (vlib_main_t * vm, vlib_buffer_t * p0, - ip4_header_t * ip0); - -void ip4_register_protocol (u32 protocol, u32 node_index); - -serialize_function_t serialize_vnet_ip4_main, unserialize_vnet_ip4_main; - -int vnet_set_ip4_flow_hash (u32 table_id, - flow_hash_config_t flow_hash_config); - -void ip4_mtrie_init (ip4_fib_mtrie_t * m); - -int vnet_set_ip4_classify_intfc (vlib_main_t * vm, u32 sw_if_index, - u32 table_index); - -/* Compute flow hash. We'll use it to select which adjacency to use for this - flow. And other things. */ -always_inline u32 -ip4_compute_flow_hash (const ip4_header_t * ip, - flow_hash_config_t flow_hash_config) -{ - tcp_header_t *tcp = (void *) (ip + 1); - u32 a, b, c, t1, t2; - uword is_tcp_udp = (ip->protocol == IP_PROTOCOL_TCP - || ip->protocol == IP_PROTOCOL_UDP); - - t1 = (flow_hash_config & IP_FLOW_HASH_SRC_ADDR) - ? ip->src_address.data_u32 : 0; - t2 = (flow_hash_config & IP_FLOW_HASH_DST_ADDR) - ? ip->dst_address.data_u32 : 0; - - a = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ? t2 : t1; - b = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ? t1 : t2; - b ^= (flow_hash_config & IP_FLOW_HASH_PROTO) ? ip->protocol : 0; - - t1 = is_tcp_udp ? tcp->ports.src : 0; - t2 = is_tcp_udp ? tcp->ports.dst : 0; - - t1 = (flow_hash_config & IP_FLOW_HASH_SRC_PORT) ? t1 : 0; - t2 = (flow_hash_config & IP_FLOW_HASH_DST_PORT) ? t2 : 0; - - c = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ? - (t1 << 16) | t2 : (t2 << 16) | t1; - - hash_v3_mix32 (a, b, c); - hash_v3_finalize32 (a, b, c); - - return c; -} - -void -ip4_forward_next_trace (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame, - vlib_rx_or_tx_t which_adj_index); - -u8 *format_ip4_forward_next_trace (u8 * s, va_list * args); - -u32 ip4_tcp_udp_validate_checksum (vlib_main_t * vm, vlib_buffer_t * p0); - -#endif /* included_ip_ip4_h */ - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |