src/network/networkd-route.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 #include "conf-parser.h"
   5 #include "macro.h"
   6
   7 typedef struct Route Route;
   8 typedef struct NetworkConfigSection NetworkConfigSection;
   9
  10 #include "networkd-network.h"
  11 #include "networkd-util.h"
  12
  13 struct Route {
  14         Network *network;
  15         NetworkConfigSection *section;
  16
  17         Link *link;
  18
  19         int family;
  20         int quickack;
  21         int fast_open_no_cookie;
  22         int ttl_propagate;
  23
  24         unsigned char dst_prefixlen;
  25         unsigned char src_prefixlen;
  26         unsigned char scope;
  27         bool scope_set;
  28         unsigned char protocol;  /* RTPROT_* */
  29         unsigned char type; /* RTN_* */
  30         unsigned char tos;
  31         uint32_t priority; /* note that ip(8) calls this 'metric' */
  32         uint32_t table;
  33         bool table_set;
  34         uint32_t mtu;
  35         uint32_t initcwnd;
  36         uint32_t initrwnd;
  37         unsigned char pref;
  38         unsigned flags;
  39         int gateway_onlink;
  40
  41         union in_addr_union gw;
  42         union in_addr_union dst;
  43         union in_addr_union src;
  44         union in_addr_union prefsrc;
  45
  46         usec_t lifetime;
  47         sd_event_source *expire;
  48
  49         LIST_FIELDS(Route, routes);
  50 };
  51
  52 extern const struct hash_ops route_full_hash_ops;
  53
  54 int route_new(Route **ret);
  55 void route_free(Route *route);
  56 int route_configure(Route *route, Link *link, link_netlink_message_handler_t callback);
  57 int route_remove(Route *route, Link *link, link_netlink_message_handler_t callback);
  58
  59 int route_get(Link *link, int family, const union in_addr_union *dst, unsigned char dst_prefixlen, unsigned char tos, uint32_t priority, uint32_t table, Route **ret);
  60 int route_add(Link *link, int family, const union in_addr_union *dst, unsigned char dst_prefixlen, unsigned char tos, uint32_t priority, uint32_t table, Route **ret);
  61 int route_add_foreign(Link *link, int family, const union in_addr_union *dst, unsigned char dst_prefixlen, unsigned char tos, uint32_t priority, uint32_t table, Route **ret);
  62 void route_update(Route *route, const union in_addr_union *src, unsigned char src_prefixlen, const union in_addr_union *gw, const union in_addr_union *prefsrc, unsigned char scope, unsigned char protocol, unsigned char type);
  63 bool route_equal(Route *r1, Route *r2);
  64
  65 int route_expire_handler(sd_event_source *s, uint64_t usec, void *userdata);
  66 int route_section_verify(Route *route, Network *network);
  67
  68 DEFINE_NETWORK_SECTION_FUNCTIONS(Route, route_free);
  69
  70 int network_add_ipv4ll_route(Network *network);
  71 int network_add_default_route_on_device(Network *network);
  72
  73 const char* route_type_to_string(int t) _const_;
  74 int route_type_from_string(const char *s) _pure_;
  75
  76 #define ROUTE_SCOPE_STR_MAX CONST_MAX(DECIMAL_STR_MAX(int), STRLEN("nowhere") + 1)
  77 const char *format_route_scope(int scope, char *buf, size_t size);
  78
  79 #define ROUTE_TABLE_STR_MAX CONST_MAX(DECIMAL_STR_MAX(int), STRLEN("default") + 1)
  80 const char *format_route_table(int table, char *buf, size_t size);
  81
  82 #define ROUTE_PROTOCOL_STR_MAX CONST_MAX(DECIMAL_STR_MAX(int), STRLEN("redirect") + 1)
  83 const char *format_route_protocol(int protocol, char *buf, size_t size);
  84
  85 CONFIG_PARSER_PROTOTYPE(config_parse_gateway);
  86 CONFIG_PARSER_PROTOTYPE(config_parse_preferred_src);
  87 CONFIG_PARSER_PROTOTYPE(config_parse_destination);
  88 CONFIG_PARSER_PROTOTYPE(config_parse_route_priority);
  89 CONFIG_PARSER_PROTOTYPE(config_parse_route_scope);
  90 CONFIG_PARSER_PROTOTYPE(config_parse_route_table);
  91 CONFIG_PARSER_PROTOTYPE(config_parse_gateway_onlink);
  92 CONFIG_PARSER_PROTOTYPE(config_parse_ipv6_route_preference);
  93 CONFIG_PARSER_PROTOTYPE(config_parse_route_protocol);
  94 CONFIG_PARSER_PROTOTYPE(config_parse_route_type);
  95 CONFIG_PARSER_PROTOTYPE(config_parse_tcp_window);
  96 CONFIG_PARSER_PROTOTYPE(config_parse_quickack);
  97 CONFIG_PARSER_PROTOTYPE(config_parse_fast_open_no_cookie);
  98 CONFIG_PARSER_PROTOTYPE(config_parse_route_ttl_propagate);
  99 CONFIG_PARSER_PROTOTYPE(config_parse_route_mtu);