vpp - Vector Packet Processing

Age	Commit message (Expand)	Author	Files	Lines
2018-06-24	Revert "Revert "make test: fix broken interfaces""	Klement Sekera	1	-3/+2
2018-06-22	Revert "make test: fix broken interfaces"	Ole Troan	1	-2/+3
2018-06-22	make test: fix broken interfaces	Klement Sekera	1	-3/+2
2018-05-23	make test: VPP-1288 fix from sw_if_index values	Klement Sekera	1	-2/+1
2018-03-21	bond: Add bonding driver and LACP protocol	Steven	1	-0/+48

/* * 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_lookup.h: ip (4 or 6) lookup structures, adjacencies, ... * * 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. */ /** * @file * Definitions for all things IP (v4|v6) unicast and multicast lookup related. * * - Adjacency definitions and registration. * - Callbacks on route add. * - Callbacks on interface address change. */ #ifndef included_ip_lookup_h #define included_ip_lookup_h #include <vnet/vnet.h> #include <vlib/buffer.h> #include <vnet/ip/ip4_packet.h> #include <vnet/ip/ip6_packet.h> #include <vnet/fib/fib_node.h> #include <vnet/dpo/dpo.h> #include <vnet/feature/feature.h> #include <vnet/rewrite.h> /** @brief Common (IP4/IP6) next index stored in adjacency. */ typedef enum { /** Adjacency to drop this packet. */ IP_LOOKUP_NEXT_DROP, /** Adjacency to punt this packet. */ IP_LOOKUP_NEXT_PUNT, /** This packet is for one of our own IP addresses. */ IP_LOOKUP_NEXT_LOCAL, /** This packet matches an "incomplete adjacency" and packets need to be passed to ARP to find rewrite string for this destination. */ IP_LOOKUP_NEXT_ARP, /** This packet matches an "interface route" and packets need to be passed to ARP to find rewrite string for this destination. */ IP_LOOKUP_NEXT_GLEAN, /** This packet is to be rewritten and forwarded to the next processing node. This is typically the output interface but might be another node for further output processing. */ IP_LOOKUP_NEXT_REWRITE, /** This packets follow a load-balance */ IP_LOOKUP_NEXT_LOAD_BALANCE, /** This packets follow a mid-chain adjacency */ IP_LOOKUP_NEXT_MIDCHAIN, /** This packets needs to go to ICMP error */ IP_LOOKUP_NEXT_ICMP_ERROR, /** Multicast Adjacency. */ IP_LOOKUP_NEXT_MCAST, IP_LOOKUP_N_NEXT, } ip_lookup_next_t; typedef enum { IP4_LOOKUP_N_NEXT = IP_LOOKUP_N_NEXT, } ip4_lookup_next_t; typedef enum { /* Hop-by-hop header handling */ IP6_LOOKUP_NEXT_HOP_BY_HOP = IP_LOOKUP_N_NEXT, IP6_LOOKUP_NEXT_ADD_HOP_BY_HOP, IP6_LOOKUP_NEXT_POP_HOP_BY_HOP, IP6_LOOKUP_N_NEXT, } ip6_lookup_next_t; #define IP4_LOOKUP_NEXT_NODES { \ [IP_LOOKUP_NEXT_DROP] = "ip4-drop", \ [IP_LOOKUP_NEXT_PUNT] = "ip4-punt", \ [IP_LOOKUP_NEXT_LOCAL] = "ip4-local", \ [IP_LOOKUP_NEXT_ARP] = "ip4-arp", \ [IP_LOOKUP_NEXT_GLEAN] = "ip4-glean", \ [IP_LOOKUP_NEXT_REWRITE] = "ip4-rewrite", \ [IP_LOOKUP_NEXT_MCAST] = "ip4-rewrite-mcast", \ [IP_LOOKUP_NEXT_MIDCHAIN] = "ip4-midchain", \ [IP_LOOKUP_NEXT_LOAD_BALANCE] = "ip4-load-balance", \ [IP_LOOKUP_NEXT_ICMP_ERROR] = "ip4-icmp-error", \ } #define IP6_LOOKUP_NEXT_NODES { \ [IP_LOOKUP_NEXT_DROP] = "ip6-drop", \ [IP_LOOKUP_NEXT_PUNT] = "ip6-punt", \ [IP_LOOKUP_NEXT_LOCAL] = "ip6-local", \ [IP_LOOKUP_NEXT_ARP] = "ip6-discover-neighbor", \ [IP_LOOKUP_NEXT_GLEAN] = "ip6-glean", \ [IP_LOOKUP_NEXT_REWRITE] = "ip6-rewrite", \ [IP_LOOKUP_NEXT_MCAST] = "ip6-rewrite-mcast", \ [IP_LOOKUP_NEXT_MIDCHAIN] = "ip6-midchain", \ [IP_LOOKUP_NEXT_LOAD_BALANCE] = "ip6-load-balance", \ [IP_LOOKUP_NEXT_ICMP_ERROR] = "ip6-icmp-error", \ [IP6_LOOKUP_NEXT_HOP_BY_HOP] = "ip6-hop-by-hop", \ [IP6_LOOKUP_NEXT_ADD_HOP_BY_HOP] = "ip6-add-hop-by-hop", \ [IP6_LOOKUP_NEXT_POP_HOP_BY_HOP] = "ip6-pop-hop-by-hop", \ } /** Flow hash configuration */ #define IP_FLOW_HASH_SRC_ADDR (1<<0) #define IP_FLOW_HASH_DST_ADDR (1<<1) #define IP_FLOW_HASH_PROTO (1<<2) #define IP_FLOW_HASH_SRC_PORT (1<<3) #define IP_FLOW_HASH_DST_PORT (1<<4) #define IP_FLOW_HASH_REVERSE_SRC_DST (1<<5) /** Default: 5-tuple without the "reverse" bit */ #define IP_FLOW_HASH_DEFAULT (0x1F) #define foreach_flow_hash_bit \ _(src, IP_FLOW_HASH_SRC_ADDR) \ _(dst, IP_FLOW_HASH_DST_ADDR) \ _(sport, IP_FLOW_HASH_SRC_PORT) \ _(dport, IP_FLOW_HASH_DST_PORT) \ _(proto, IP_FLOW_HASH_PROTO) \ _(reverse, IP_FLOW_HASH_REVERSE_SRC_DST) /** * A flow hash configuration is a mask of the flow hash options */ typedef u32 flow_hash_config_t; /** * Forward delcartion */ struct ip_adjacency_t_; /** * @brief A function type for post-rewrite fixups on midchain adjacency */ typedef void (*adj_midchain_fixup_t) (vlib_main_t * vm, struct ip_adjacency_t_ * adj, vlib_buffer_t * b0); /** * @brief Flags on an IP adjacency */ typedef enum ip_adjacency_flags_t_ { /** * Currently a sync walk is active. Used to prevent re-entrant walking */ IP_ADJ_SYNC_WALK_ACTIVE = (1 << 0), } ip_adjacency_flags_t; /** @brief IP unicast adjacency. @note cache aligned. */ typedef struct ip_adjacency_t_ { CLIB_CACHE_LINE_ALIGN_MARK (cacheline0); /** Number of adjecencies in block. Greater than 1 means multipath; otherwise equal to 1. */ u16 n_adj; /** Next hop after ip4-lookup. */ union { ip_lookup_next_t lookup_next_index:16; u16 lookup_next_index_as_int; }; /** Interface address index for this local/arp adjacency. */ u32 if_address_index; /* * link/ether-type */ vnet_link_t ia_link; u8 ia_nh_proto; union { /** * IP_LOOKUP_NEXT_ARP/IP_LOOKUP_NEXT_REWRITE * * neighbour adjacency sub-type; */ struct { ip46_address_t next_hop; } nbr; /** * IP_LOOKUP_NEXT_MIDCHAIN * * A nbr adj that is also recursive. Think tunnels. * A nbr adj can transition to be of type MDICHAIN * so be sure to leave the two structs with the next_hop * fields aligned. */ struct { /** * The recursive next-hop */ ip46_address_t next_hop; /** * The node index of the tunnel's post rewrite/TX function. */ u32 tx_function_node; /** * The next DPO to use */ dpo_id_t next_dpo; /** * A function to perform the post-rewrite fixup */ adj_midchain_fixup_t fixup_func; } midchain; /** * IP_LOOKUP_NEXT_GLEAN * * Glean the address to ARP for from the packet's destination */ struct { ip46_address_t receive_addr; } glean; } sub_type; CLIB_CACHE_LINE_ALIGN_MARK (cacheline1); /* Rewrite in second/third cache lines */ vnet_declare_rewrite (VLIB_BUFFER_PRE_DATA_SIZE); /* * member not accessed in the data plane are relgated to the * remaining cachelines */ fib_node_t ia_node; /** * Flags on the adjacency */ ip_adjacency_flags_t ia_flags; } ip_adjacency_t; STATIC_ASSERT ((STRUCT_OFFSET_OF (ip_adjacency_t, cacheline0) == 0), "IP adjacency cachline 0 is not offset"); STATIC_ASSERT ((STRUCT_OFFSET_OF (ip_adjacency_t, cacheline1) == CLIB_CACHE_LINE_BYTES), "IP adjacency cachline 1 is more than one cachline size offset"); /* An all zeros address */ extern const ip46_address_t zero_addr; typedef struct { /* Key for mhash; in fact, just a byte offset into mhash key vector. */ u32 address_key; /* Interface which has this address. */ u32 sw_if_index; /* Adjacency for neighbor probe (ARP) for this interface address. */ u32 neighbor_probe_adj_index; /* Address (prefix) length for this interface. */ u16 address_length; /* Will be used for something eventually. Primary vs. secondary? */ u16 flags; /* Next and previous pointers for doubly linked list of addresses per software interface. */ u32 next_this_sw_interface; u32 prev_this_sw_interface; } ip_interface_address_t; typedef enum { IP_LOCAL_NEXT_DROP, IP_LOCAL_NEXT_PUNT, IP_LOCAL_NEXT_UDP_LOOKUP, IP_LOCAL_NEXT_ICMP, IP_LOCAL_N_NEXT, } ip_local_next_t; struct ip_lookup_main_t; typedef struct ip_lookup_main_t { /* Adjacency heap. */ ip_adjacency_t *adjacency_heap; /** load-balance packet/byte counters indexed by LB index. */ vlib_combined_counter_main_t load_balance_counters; /** Pool of addresses that are assigned to interfaces. */ ip_interface_address_t *if_address_pool; /** Hash table mapping address to index in interface address pool. */ mhash_t address_to_if_address_index; /** Head of doubly linked list of interface addresses for each software interface. ~0 means this interface has no address. */ u32 *if_address_pool_index_by_sw_if_index; /** First table index to use for this interface, ~0 => none */ u32 *classify_table_index_by_sw_if_index; /** Feature arc indices */ u8 mcast_feature_arc_index; u8 ucast_feature_arc_index; u8 output_feature_arc_index; /** Number of bytes in a fib result. Must be at least sizeof (uword). First word is always adjacency index. */ u32 fib_result_n_bytes, fib_result_n_words; format_function_t *format_fib_result; /** 1 for ip6; 0 for ip4. */ u32 is_ip6; /** Either format_ip4_address_and_length or format_ip6_address_and_length. */ format_function_t *format_address_and_length; /** Special adjacency format functions */ format_function_t **special_adjacency_format_functions; /** Table mapping ip protocol to ip[46]-local node next index. */ u8 local_next_by_ip_protocol[256]; /** IP_BUILTIN_PROTOCOL_{TCP,UDP,ICMP,OTHER} by protocol in IP header. */ u8 builtin_protocol_by_ip_protocol[256]; } ip_lookup_main_t; always_inline ip_adjacency_t * ip_get_adjacency (ip_lookup_main_t * lm, u32 adj_index) { ip_adjacency_t *adj; adj = vec_elt_at_index (lm->adjacency_heap, adj_index); return adj; } #define ip_prefetch_adjacency(lm,adj_index,type) \ do { \ ip_adjacency_t * _adj = (lm)->adjacency_heap + (adj_index); \ CLIB_PREFETCH (_adj, sizeof (_adj[0]), type); \ } while (0) clib_error_t *ip_interface_address_add_del (ip_lookup_main_t * lm, u32 sw_if_index, void *address, u32 address_length, u32 is_del, u32 * result_index); u8 *format_ip_flow_hash_config (u8 * s, va_list * args); always_inline ip_interface_address_t * ip_get_interface_address (ip_lookup_main_t * lm, void *addr_fib) { uword *p = mhash_get (&lm->address_to_if_address_index, addr_fib); return p ? pool_elt_at_index (lm->if_address_pool, p[0]) : 0; } u32 fib_table_id_find_fib_index (fib_protocol_t proto, u32 table_id); always_inline void * ip_interface_address_get_address (ip_lookup_main_t * lm, ip_interface_address_t * a) { return mhash_key_to_mem (&lm->address_to_if_address_index, a->address_key); } /* *INDENT-OFF* */ #define foreach_ip_interface_address(lm,a,sw_if_index,loop,body) \ do { \ vnet_main_t *_vnm = vnet_get_main(); \ u32 _sw_if_index = sw_if_index; \ vnet_sw_interface_t *_swif; \ _swif = vnet_get_sw_interface (_vnm, _sw_if_index); \ \ /* \ * Loop => honor unnumbered interface addressing. \ */ \ if (loop && _swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED) \ _sw_if_index = _swif->unnumbered_sw_if_index; \ u32 _ia = \ (vec_len((lm)->if_address_pool_index_by_sw_if_index) \ > (_sw_if_index)) \ ? vec_elt ((lm)->if_address_pool_index_by_sw_if_index, \ (_sw_if_index)) : (u32)~0; \ ip_interface_address_t * _a; \ while (_ia != ~0) \ { \ _a = pool_elt_at_index ((lm)->if_address_pool, _ia); \ _ia = _a->next_this_sw_interface; \ (a) = _a; \ body; \ } \ } while (0) /* *INDENT-ON* */ void ip_lookup_init (ip_lookup_main_t * lm, u32 ip_lookup_node_index); #endif /* included_ip_lookup_h */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */