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 typedef struct MultipathRouteVia {
  14         uint16_t family;
  15         union in_addr_union address;
  16 } _packed_ MultipathRouteVia;
  17
  18 typedef struct MultipathRoute {
  19         MultipathRouteVia gateway;
  20         int ifindex;
  21         uint32_t weight;
  22 } MultipathRoute;
  23
  24 struct Route {
  25         Network *network;
  26         NetworkConfigSection *section;
  27
  28         Link *link;
  29
  30         int family;
  31         int quickack;
  32         int fast_open_no_cookie;
  33         int ttl_propagate;
  34
  35         unsigned char dst_prefixlen;
  36         unsigned char src_prefixlen;
  37         unsigned char scope;
  38         bool scope_set;
  39         unsigned char protocol;  /* RTPROT_* */
  40         unsigned char type; /* RTN_* */
  41         unsigned char tos;
  42         uint32_t priority; /* note that ip(8) calls this 'metric' */
  43         uint32_t table;
  44         bool table_set;
  45         uint32_t mtu;
  46         uint32_t initcwnd;
  47         uint32_t initrwnd;
  48         unsigned char pref;
  49         unsigned flags;
  50         int gateway_onlink;
  51         bool gateway_from_dhcp;
  52
  53         union in_addr_union gw;
  54         union in_addr_union dst;
  55         union in_addr_union src;
  56         union in_addr_union prefsrc;
  57         OrderedSet *multipath_routes;
  58
  59         usec_t lifetime;
  60         sd_event_source *expire;
  61
  62         LIST_FIELDS(Route, routes);
  63 };
  64
  65 extern const struct hash_ops route_hash_ops;
  66
  67 int route_new(Route **ret);
  68 void route_free(Route *route);
  69 int route_configure(Route *route, Link *link, link_netlink_message_handler_t callback, Route **ret);
  70 int route_remove(Route *route, Link *link, link_netlink_message_handler_t callback);
  71
  72 int route_get(Link *link, Route *in, Route **ret);
  73 int route_add(Link *link, Route *in, Route **ret);
  74 int route_add_foreign(Link *link, Route *in, Route **ret);
  75 bool route_equal(Route *r1, Route *r2);
  76
  77 int route_expire_handler(sd_event_source *s, uint64_t usec, void *userdata);
  78 int route_section_verify(Route *route, Network *network);
  79
  80 DEFINE_NETWORK_SECTION_FUNCTIONS(Route, route_free);
  81
  82 int network_add_ipv4ll_route(Network *network);
  83 int network_add_default_route_on_device(Network *network);
  84
  85 const char* route_type_to_string(int t) _const_;
  86 int route_type_from_string(const char *s) _pure_;
  87
  88 #define ROUTE_SCOPE_STR_MAX CONST_MAX(DECIMAL_STR_MAX(int), STRLEN("nowhere") + 1)
  89 const char *format_route_scope(int scope, char *buf, size_t size);
  90
  91 #define ROUTE_TABLE_STR_MAX CONST_MAX(DECIMAL_STR_MAX(int), STRLEN("default") + 1)
  92 const char *format_route_table(int table, char *buf, size_t size);
  93
  94 #define ROUTE_PROTOCOL_STR_MAX CONST_MAX(DECIMAL_STR_MAX(int), STRLEN("redirect") + 1)
  95 const char *format_route_protocol(int protocol, char *buf, size_t size);
  96
  97 CONFIG_PARSER_PROTOTYPE(config_parse_gateway);
  98 CONFIG_PARSER_PROTOTYPE(config_parse_preferred_src);
  99 CONFIG_PARSER_PROTOTYPE(config_parse_destination);
 100 CONFIG_PARSER_PROTOTYPE(config_parse_route_priority);
 101 CONFIG_PARSER_PROTOTYPE(config_parse_route_scope);
 102 CONFIG_PARSER_PROTOTYPE(config_parse_route_table);
 103 CONFIG_PARSER_PROTOTYPE(config_parse_route_boolean);
 104 CONFIG_PARSER_PROTOTYPE(config_parse_ipv6_route_preference);
 105 CONFIG_PARSER_PROTOTYPE(config_parse_route_protocol);
 106 CONFIG_PARSER_PROTOTYPE(config_parse_route_type);
 107 CONFIG_PARSER_PROTOTYPE(config_parse_tcp_window);
 108 CONFIG_PARSER_PROTOTYPE(config_parse_route_mtu);
 109 CONFIG_PARSER_PROTOTYPE(config_parse_multipath_route);