Changeset View
Changeset View
Standalone View
Standalone View
contrib/dhcpcd/src/route.h
- This file was added.
| /* SPDX-License-Identifier: BSD-2-Clause */ | |||||
| /* | |||||
| * dhcpcd - route management | |||||
| * Copyright (c) 2006-2021 Roy Marples <roy@marples.name> | |||||
| * All rights reserved | |||||
| * rEDISTRIBUTION AND USE IN SOURCE AND BINARY FORMS, WITH OR WITHOUT | |||||
| * modification, are permitted provided that the following conditions | |||||
| * are met: | |||||
| * 1. Redistributions of source code must retain the above copyright | |||||
| * notice, this list of conditions and the following disclaimer. | |||||
| * 2. Redistributions in binary form must reproduce the above copyright | |||||
| * notice, this list of conditions and the following disclaimer in the | |||||
| * documentation and/or other materials provided with the distribution. | |||||
| * | |||||
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |||||
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |||||
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
| * SUCH DAMAGE. | |||||
| */ | |||||
| #ifndef ROUTE_H | |||||
| #define ROUTE_H | |||||
| #ifdef HAVE_SYS_RBTREE_H | |||||
| #include <sys/rbtree.h> | |||||
| #endif | |||||
| #include <sys/socket.h> | |||||
| #include <net/route.h> | |||||
| #include <stdbool.h> | |||||
| #include "dhcpcd.h" | |||||
| #include "sa.h" | |||||
| /* | |||||
| * Enable the route free list by default as | |||||
| * memory usage is still reported as low/unchanged even | |||||
| * when dealing with millions of routes. | |||||
| */ | |||||
| #if !defined(RT_FREE_ROUTE_TABLE) | |||||
| #define RT_FREE_ROUTE_TABLE 1 | |||||
| #elif RT_FREE_ROUTE_TABLE == 0 | |||||
| #undef RT_FREE_ROUTE_TABLE | |||||
| #endif | |||||
| /* Some systems have route metrics. | |||||
| * OpenBSD route priority is not this. */ | |||||
| #ifndef HAVE_ROUTE_METRIC | |||||
| # if defined(__linux__) | |||||
| # define HAVE_ROUTE_METRIC 1 | |||||
| # endif | |||||
| #endif | |||||
| #ifdef __linux__ | |||||
| # include <linux/version.h> /* RTA_PREF is only an enum.... */ | |||||
| # if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 1, 0) | |||||
| # define HAVE_ROUTE_PREF | |||||
| # endif | |||||
| #endif | |||||
| #if defined(__OpenBSD__) || defined (__sun) | |||||
| # define ROUTE_PER_GATEWAY | |||||
| /* XXX dhcpcd doesn't really support this yet. | |||||
| * But that's generally OK if only dhcpcd is managing routes. */ | |||||
| #endif | |||||
| /* OpenBSD defines this as a "convienience" ..... we work around it. */ | |||||
| #ifdef __OpenBSD__ | |||||
| #undef rt_mtu | |||||
| #endif | |||||
| struct rt { | |||||
| union sa_ss rt_ss_dest; | |||||
| #define rt_dest rt_ss_dest.sa | |||||
| union sa_ss rt_ss_netmask; | |||||
| #define rt_netmask rt_ss_netmask.sa | |||||
| union sa_ss rt_ss_gateway; | |||||
| #define rt_gateway rt_ss_gateway.sa | |||||
| struct interface *rt_ifp; | |||||
| union sa_ss rt_ss_ifa; | |||||
| #define rt_ifa rt_ss_ifa.sa | |||||
| unsigned int rt_flags; | |||||
| unsigned int rt_mtu; | |||||
| #ifdef HAVE_ROUTE_METRIC | |||||
| unsigned int rt_metric; | |||||
| #endif | |||||
| /* Maximum interface index is generally USHORT_MAX or 65535. | |||||
| * Add some padding for other stuff and we get offsets for the | |||||
| * below that should work automatically. | |||||
| * This is only an issue if the user defines higher metrics in | |||||
| * their configuration, but then they might wish to override also. */ | |||||
| #define RTMETRIC_BASE 1000U | |||||
| #define RTMETRIC_WIRELESS 2000U | |||||
| #define RTMETRIC_IPV4LL 1000000U | |||||
| #define RTMETRIC_ROAM 2000000U | |||||
| #ifdef HAVE_ROUTE_PREF | |||||
| int rt_pref; | |||||
| #endif | |||||
| #define RTPREF_HIGH 1 | |||||
| #define RTPREF_MEDIUM 0 /* has to be zero */ | |||||
| #define RTPREF_LOW (-1) | |||||
| #define RTPREF_RESERVED (-2) | |||||
| #define RTPREF_INVALID (-3) /* internal */ | |||||
| unsigned int rt_dflags; | |||||
| #define RTDF_IFA_ROUTE 0x01 /* Address generated route */ | |||||
| #define RTDF_FAKE 0x02 /* Maybe us on lease reboot */ | |||||
| #define RTDF_IPV4LL 0x04 /* IPv4LL route */ | |||||
| #define RTDF_RA 0x08 /* Router Advertisement */ | |||||
| #define RTDF_DHCP 0x10 /* DHCP route */ | |||||
| #define RTDF_STATIC 0x20 /* Configured in dhcpcd */ | |||||
| #define RTDF_GATELINK 0x40 /* Gateway is on link */ | |||||
| size_t rt_order; | |||||
| rb_node_t rt_tree; | |||||
| }; | |||||
| extern const rb_tree_ops_t rt_compare_list_ops; | |||||
| extern const rb_tree_ops_t rt_compare_proto_ops; | |||||
| void rt_init(struct dhcpcd_ctx *); | |||||
| void rt_dispose(struct dhcpcd_ctx *); | |||||
| void rt_free(struct rt *); | |||||
| void rt_freeif(struct interface *); | |||||
| bool rt_is_default(const struct rt *); | |||||
| void rt_headclear0(struct dhcpcd_ctx *, rb_tree_t *, int); | |||||
| void rt_headclear(rb_tree_t *, int); | |||||
| void rt_headfreeif(rb_tree_t *); | |||||
| struct rt * rt_new0(struct dhcpcd_ctx *); | |||||
| void rt_setif(struct rt *, struct interface *); | |||||
| struct rt * rt_new(struct interface *); | |||||
| struct rt * rt_proto_add_ctx(rb_tree_t *, struct rt *, struct dhcpcd_ctx *); | |||||
| struct rt * rt_proto_add(rb_tree_t *, struct rt *); | |||||
| int rt_cmp_dest(const struct rt *, const struct rt *); | |||||
| void rt_recvrt(int, const struct rt *, pid_t); | |||||
| void rt_build(struct dhcpcd_ctx *, int); | |||||
| #endif | |||||