#include <string.h>
#include <stdlib.h>
#include <stdio.h>
-#include <unistd.h>
#include <limits.h>
#include <arpa/inet.h>
+#include <netinet/in.h>
#include "netifd.h"
#include "device.h"
ROUTE_VALID,
ROUTE_TABLE,
ROUTE_SOURCE,
+ ROUTE_ONLINK,
+ ROUTE_TYPE,
__ROUTE_MAX
};
[ROUTE_TABLE] = { .name = "table", .type = BLOBMSG_TYPE_STRING },
[ROUTE_VALID] = { .name = "valid", .type = BLOBMSG_TYPE_INT32 },
[ROUTE_SOURCE] = { .name = "source", .type = BLOBMSG_TYPE_STRING },
+ [ROUTE_ONLINK] = { .name = "onlink", .type = BLOBMSG_TYPE_BOOL },
+ [ROUTE_TYPE] = { .name = "type", .type = BLOBMSG_TYPE_STRING }
};
const struct uci_blob_param_list route_attr_list = {
struct list_head prefixes = LIST_HEAD_INIT(prefixes);
-static struct list_head source_tables = LIST_HEAD_INIT(source_tables);
static struct device_prefix *ula_prefix = NULL;
static struct uloop_timeout valid_until_timeout;
uint8_t m_clear = (1 << (m_bytes * 8 - mask)) - 1;
uint8_t *p = (uint8_t *) a;
- if (m_bytes < sizeof(a))
- memset(p + m_bytes, 0, sizeof(a) - m_bytes);
+ if (m_bytes < sizeof(*a))
+ memset(p + m_bytes, 0, sizeof(*a) - m_bytes);
p[m_bytes - 1] &= ~m_clear;
}
return (add) ? system_add_iprule(&rule) : system_del_iprule(&rule);
}
-static int set_ip_lo_policy(bool add, bool v6, struct interface *iface)
-{
- struct iprule rule = {
- .flags = IPRULE_IN | IPRULE_LOOKUP | IPRULE_PRIORITY,
- .priority = IPRULE_PRIORITY_NW + iface->l3_dev.dev->ifindex,
- .lookup = (v6) ? iface->ip6table : iface->ip4table,
- .in_dev = "lo"
- };
-
- if (!rule.lookup)
- return 0;
-
- rule.flags |= (v6) ? IPRULE_INET6 : IPRULE_INET4;
-
- return (add) ? system_add_iprule(&rule) : system_del_iprule(&rule);
-}
-
static bool
__find_ip_addr_target(struct interface_ip_settings *ip, union if_addr *a, bool v6)
{
}
}
-static struct device_source_table*
-find_source_table(const struct device_route *route)
-{
- struct device_source_table key = {
- .v6 = (route->flags & DEVADDR_FAMILY) == DEVADDR_INET6,
- .addr = route->source,
- .mask = route->sourcemask
- };
- struct device_source_table *c;
- list_for_each_entry(c, &source_tables, head)
- if (!memcmp(&c->v6, &key.v6, sizeof(key) -
- offsetof(struct device_source_table, v6)))
- return c;
- return NULL;
-}
-
-static uint32_t
-get_source_table(const struct device_route *route)
-{
- if (route->table || route->sourcemask == 0)
- return route->table;
-
- struct device_source_table *tbl = find_source_table(route);
-
- if (!tbl) {
- tbl = calloc(1, sizeof(*tbl));
- tbl->addr = route->source;
- tbl->mask = route->sourcemask;
- tbl->v6 = (route->flags & DEVADDR_FAMILY) == DEVADDR_INET6;
- tbl->table = IPRULE_PRIORITY_SOURCE | (((~tbl->mask) & 0x7f) << 20);
-
- struct list_head *before = NULL;
- struct device_source_table *c;
- list_for_each_entry(c, &source_tables, head) {
- if (c->table > tbl->table) {
- before = &c->head;
- break;
- } else if (c->table == tbl->table) {
- ++tbl->table;
- }
- }
-
- if (!before)
- before = &source_tables;
-
- list_add_tail(&tbl->head, before);
- set_ip_source_policy(true, tbl->v6, tbl->table, &tbl->addr,
- tbl->mask, tbl->table, NULL, NULL);
- }
-
- ++tbl->refcount;
- return tbl->table;
-}
-
-static void
-put_source_table(const struct device_route *route)
-{
- struct device_source_table *tbl = find_source_table(route);
- if (tbl && tbl->table == route->table && --tbl->refcount == 0) {
- set_ip_source_policy(false, tbl->v6, tbl->table, &tbl->addr,
- tbl->mask, tbl->table, NULL, NULL);
- list_del(&tbl->head);
- free(tbl);
- }
-}
-
static bool
interface_ip_find_addr_target(struct interface *iface, union if_addr *a, bool v6)
{
if ((cur = tb[ROUTE_METRIC]) != NULL) {
route->metric = blobmsg_get_u32(cur);
route->flags |= DEVROUTE_METRIC;
- }
+ } else
+ route->metric = iface->metric;
if ((cur = tb[ROUTE_MTU]) != NULL) {
route->mtu = blobmsg_get_u32(cur);
const char *addr = strtok_r(source, "/", &saveptr);
const char *mask = strtok_r(NULL, "/", &saveptr);
- if (inet_pton(af, addr, &route->source) < 1) {
+ if (!addr || inet_pton(af, addr, &route->source) < 1) {
DPRINTF("Failed to parse route source: %s\n", addr);
goto error;
}
- route->sourcemask = atoi(mask);
- } else if (is_proto_route) {
+ route->sourcemask = (mask) ? atoi(mask) : ((af == AF_INET6) ? 128 : 32);
+ }
+
+ if ((cur = tb[ROUTE_ONLINK]) != NULL && blobmsg_get_bool(cur))
+ route->flags |= DEVROUTE_ONLINK;
+
+ if (is_proto_route) {
route->table = (v6) ? iface->ip6table : iface->ip4table;
route->flags |= DEVROUTE_SRCTABLE;
}
goto error;
}
+ /* only set the table flag if not using the main (default) table */
+ if (system_is_default_rt_table(route->table))
+ route->table = 0;
+
if (route->table)
route->flags |= DEVROUTE_TABLE;
}
route->valid_until = valid_until;
}
- if (route->sourcemask) {
- route->table = get_source_table(route);
- route->flags |= DEVROUTE_SRCTABLE;
+ if ((cur = tb[ROUTE_TYPE]) != NULL) {
+ if (!system_resolve_rt_type(blobmsg_data(cur), &route->type)) {
+ DPRINTF("Failed to resolve routing type: %s\n", (char *) blobmsg_data(cur));
+ goto error;
+ }
+ route->flags |= DEVROUTE_TYPE;
}
vlist_add(&ip->route, &route->node, route);
if (r1->sourcemask != r2->sourcemask)
return r1->sourcemask - r2->sourcemask;
+ if (r1->table != r2->table)
+ return r1->table - r2->table;
+
int maskcmp = memcmp(&r1->source, &r2->source, sizeof(r1->source));
if (maskcmp)
return maskcmp;
struct device *dev = iface->l3_dev.dev;
struct device_route route;
+ if (addr->flags & DEVADDR_OFFLINK)
+ return;
+
memset(&route, 0, sizeof(route));
route.iface = iface;
route.flags = addr->flags;
route.flags |= DEVADDR_KERNEL;
system_del_route(dev, &route);
- if (!(addr->flags & DEVADDR_OFFLINK)) {
- route.flags &= ~DEVADDR_KERNEL;
- route.metric = iface->metric;
- system_add_route(dev, &route);
- }
+ route.flags &= ~DEVADDR_KERNEL;
+ route.metric = iface->metric;
+ system_add_route(dev, &route);
} else {
- if (!(addr->flags & DEVADDR_OFFLINK))
- system_del_route(dev, &route);
+ system_del_route(dev, &route);
}
}
iface = ip->iface;
dev = iface->l3_dev.dev;
+ if (!node_new || !node_old)
+ iface->updated |= IUF_ADDRESS;
+
if (node_new) {
a_new = container_of(node_new, struct device_addr, node);
if ((a_new->flags & DEVADDR_FAMILY) == DEVADDR_INET4 &&
!a_new->broadcast) {
- uint32_t mask = ~0;
- uint32_t *a = (uint32_t *) &a_new->addr;
+ /* /31 and /32 addressing need 255.255.255.255
+ * as broadcast address. */
+ if (a_new->mask >= 31) {
+ a_new->broadcast = (uint32_t) ~0;
+ } else {
+ uint32_t mask = ~0;
+ uint32_t *a = (uint32_t *) &a_new->addr;
- mask >>= a_new->mask;
- a_new->broadcast = *a | htonl(mask);
+ mask >>= a_new->mask;
+ a_new->broadcast = *a | htonl(mask);
+ }
}
}
if (a_new && a_old) {
keep = true;
- if (a_old->flags != a_new->flags)
+ if (a_old->flags != a_new->flags || a_old->failed)
keep = false;
if (a_old->valid_until != a_new->valid_until ||
}
if (node_old) {
- if (!(a_old->flags & DEVADDR_EXTERNAL) && a_old->enabled && !keep) {
- interface_handle_subnet_route(iface, a_old, false);
-
+ if (a_old->enabled && !keep) {
if ((a_old->flags & DEVADDR_FAMILY) == DEVADDR_INET6)
v6 = true;
+ unsigned int table = (v6) ? iface->ip6table : iface->ip4table;
+
//This is needed for source routing to work correctly. If a device
//has two connections to a network using the same subnet, adding
//only the network-rule will cause packets to be routed through the
//first matching network (source IP matches both masks).
- set_ip_source_policy(false, v6, IPRULE_PRIORITY_ADDR, &a_old->addr,
- (v6) ? 128 : 32, (v6) ? iface->ip6table : iface->ip4table,
- NULL, NULL);
- set_ip_source_policy(false, v6, IPRULE_PRIORITY_NW, &a_old->addr,
- a_old->mask, (v6) ? iface->ip6table : iface->ip4table, NULL, NULL);
+ if (table) {
+ set_ip_source_policy(false, v6, IPRULE_PRIORITY_ADDR, &a_old->addr,
+ (v6) ? 128 : 32, table, NULL, NULL);
+
+ if (a_old->mask != ((v6) ? 128 : 32))
+ set_ip_source_policy(false, v6, IPRULE_PRIORITY_NW, &a_old->addr,
+ a_old->mask, table, NULL, NULL);
+ }
- system_del_address(dev, a_old);
+ if (!(a_old->flags & DEVADDR_EXTERNAL)) {
+ interface_handle_subnet_route(iface, a_old, false);
+ system_del_address(dev, a_old);
+ }
}
+ free(a_old->pclass);
free(a_old);
}
if (node_new) {
a_new->enabled = true;
- if (!(a_new->flags & DEVADDR_EXTERNAL) && (!keep || replace)) {
- system_add_address(dev, a_new);
+ if (!keep || replace) {
+ if (!(a_new->flags & DEVADDR_EXTERNAL)) {
+ if (system_add_address(dev, a_new))
+ a_new->failed = true;
+
+ if (iface->metric)
+ interface_handle_subnet_route(iface, a_new, true);
+ }
if (!keep) {
if ((a_new->flags & DEVADDR_FAMILY) == DEVADDR_INET6)
v6 = true;
- set_ip_source_policy(true, v6, IPRULE_PRIORITY_ADDR, &a_new->addr,
- (v6) ? 128 : 32, (v6) ? iface->ip6table : iface->ip4table,
- NULL, NULL);
- set_ip_source_policy(true, v6, IPRULE_PRIORITY_NW, &a_new->addr,
- a_new->mask, (v6) ? iface->ip6table : iface->ip4table,
- NULL, NULL);
- }
+ unsigned int table = (v6) ? iface->ip6table : iface->ip4table;
+
+ if (table) {
+ set_ip_source_policy(true, v6, IPRULE_PRIORITY_ADDR, &a_new->addr,
+ (v6) ? 128 : 32, table, NULL, NULL);
- if ((a_new->flags & DEVADDR_OFFLINK) || iface->metric)
- interface_handle_subnet_route(iface, a_new, true);
+ if (a_new->mask != ((v6) ? 128 : 32))
+ set_ip_source_policy(true, v6, IPRULE_PRIORITY_NW, &a_new->addr,
+ a_new->mask, table, NULL, NULL);
+ }
+ }
}
}
}
iface = ip->iface;
dev = iface->l3_dev.dev;
+ if (!node_new || !node_old)
+ iface->updated |= IUF_ROUTE;
+
route_old = container_of(node_old, struct device_route, node);
route_new = container_of(node_new, struct device_route, node);
if (node_old && node_new)
- keep = !memcmp(&route_old->nexthop, &route_new->nexthop, sizeof(route_old->nexthop));
+ keep = !memcmp(&route_old->nexthop, &route_new->nexthop, sizeof(route_old->nexthop)) &&
+ (route_old->mtu == route_new->mtu) && (route_old->type == route_new->type) &&
+ !route_old->failed;
if (node_old) {
if (!(route_old->flags & DEVADDR_EXTERNAL) && route_old->enabled && !keep)
system_del_route(dev, route_old);
- put_source_table(route_old);
free(route_old);
}
if (node_new) {
bool _enabled = enable_route(ip, route_new);
- if (!(route_new->flags & DEVROUTE_METRIC))
- route_new->metric = iface->metric;
-
if (!(route_new->flags & DEVADDR_EXTERNAL) && !keep && _enabled)
- system_add_route(dev, route_new);
+ if (system_add_route(dev, route_new))
+ route_new->failed = true;
route_new->iface = iface;
route_new->enabled = _enabled;
free(route_old);
}
- if (node_new)
- system_add_route(dev, route_new);
+ if (node_new) {
+ if (system_add_route(dev, route_new))
+ route_new->failed = true;
+ }
+}
+
+static void
+random_ifaceid(struct in6_addr *addr)
+{
+ static bool initialized = false;
+ struct timeval t;
+
+ if (!initialized) {
+ long int seed = 0;
+ gettimeofday(&t, NULL);
+ seed = t.tv_sec ^ t.tv_usec ^ getpid();
+ srand48(seed);
+ initialized = true;
+ }
+ addr->s6_addr32[2] = (uint32_t)mrand48();
+ addr->s6_addr32[3] = (uint32_t)mrand48();
+}
+
+static void
+eui64_ifaceid(struct interface *iface, struct in6_addr *addr)
+{
+ /* get mac address */
+ uint8_t *macaddr = iface->l3_dev.dev->settings.macaddr;
+ uint8_t *ifaceid = addr->s6_addr + 8;
+ memcpy(ifaceid,macaddr,3);
+ memcpy(ifaceid + 5,macaddr + 3, 3);
+ ifaceid[3] = 0xff;
+ ifaceid[4] = 0xfe;
+ ifaceid[0] ^= 0x02;
}
+static void
+generate_ifaceid(struct interface *iface, struct in6_addr *addr)
+{
+ /* generate new iface id */
+ switch (iface->assignment_iface_id_selection) {
+ case IFID_FIXED:
+ /* fixed */
+ /* copy host part from assignment_fixed_iface_id */
+ memcpy(addr->s6_addr + 8, iface->assignment_fixed_iface_id.s6_addr + 8, 8);
+ break;
+ case IFID_RANDOM:
+ /* randomize last 64 bits */
+ random_ifaceid(addr);
+ break;
+ case IFID_EUI64:
+ /* eui64 */
+ eui64_ifaceid(iface, addr);
+ break;
+ }
+}
static void
interface_set_prefix_address(struct device_prefix_assignment *assignment,
struct device *l3_downlink = iface->l3_dev.dev;
struct device_addr addr;
+ struct device_route route;
memset(&addr, 0, sizeof(addr));
- addr.addr.in6 = prefix->addr;
- addr.addr.in6.s6_addr32[1] |= htonl(assignment->assigned);
- addr.addr.in6.s6_addr[15] += 1;
+ memset(&route, 0, sizeof(route));
+
+ if (IN6_IS_ADDR_UNSPECIFIED(&assignment->addr)) {
+ addr.addr.in6 = prefix->addr;
+ addr.addr.in6.s6_addr32[1] |= htonl(assignment->assigned);
+ generate_ifaceid(iface, &addr.addr.in6);
+ assignment->addr = addr.addr.in6;
+ }
+ else
+ addr.addr.in6 = assignment->addr;
+
addr.mask = assignment->length;
- addr.flags = DEVADDR_INET6;
+ addr.flags = DEVADDR_INET6 | DEVADDR_OFFLINK;
addr.preferred_until = prefix->preferred_until;
addr.valid_until = prefix->valid_until;
+ route.flags = DEVADDR_INET6;
+ route.mask = addr.mask < 64 ? 64 : addr.mask;
+ route.addr = addr.addr;
+ clear_if_addr(&route.addr, route.mask);
+
if (!add && assignment->enabled) {
time_t now = system_get_rtime();
addr.preferred_until = now;
if (!addr.valid_until || addr.valid_until - now > 7200)
addr.valid_until = now + 7200;
- system_add_address(l3_downlink, &addr);
+
if (prefix->iface) {
- set_ip_source_policy(false, true, IPRULE_PRIORITY_NW, &addr.addr,
- addr.mask, prefix->iface->ip6table, iface, NULL);
+ if (prefix->iface->ip6table)
+ set_ip_source_policy(false, true, IPRULE_PRIORITY_NW, &addr.addr,
+ addr.mask, prefix->iface->ip6table, iface, NULL);
set_ip_source_policy(false, true, IPRULE_PRIORITY_REJECT, &addr.addr,
addr.mask, 0, iface, "unreachable");
}
- assignment->enabled = false;
- } else if (add && (iface->state == IFS_UP || iface->state == IFS_SETUP)) {
+ system_del_route(l3_downlink, &route);
system_add_address(l3_downlink, &addr);
+
+ assignment->enabled = false;
+ } else if (add && (iface->state == IFS_UP || iface->state == IFS_SETUP) &&
+ !system_add_address(l3_downlink, &addr)) {
+
if (prefix->iface && !assignment->enabled) {
set_ip_source_policy(true, true, IPRULE_PRIORITY_REJECT, &addr.addr,
addr.mask, 0, iface, "unreachable");
- set_ip_source_policy(true, true, IPRULE_PRIORITY_NW, &addr.addr,
- addr.mask, prefix->iface->ip6table, iface, NULL);
+ if (prefix->iface->ip6table)
+ set_ip_source_policy(true, true, IPRULE_PRIORITY_NW, &addr.addr,
+ addr.mask, prefix->iface->ip6table, iface, NULL);
}
- if (uplink && uplink->l3_dev.dev) {
- int mtu = system_update_ipv6_mtu(
- uplink->l3_dev.dev, 0);
- if (mtu > 0)
+
+ route.metric = iface->metric;
+ system_add_route(l3_downlink, &route);
+
+ if (uplink && uplink->l3_dev.dev && !(l3_downlink->settings.flags & DEV_OPT_MTU6)) {
+ int mtu = system_update_ipv6_mtu(uplink->l3_dev.dev, 0);
+ int mtu_old = system_update_ipv6_mtu(l3_downlink, 0);
+
+ if (mtu > 0 && mtu_old > mtu)
system_update_ipv6_mtu(l3_downlink, mtu);
}
+
assignment->enabled = true;
}
}
c->assigned = 1 << (64 - prefix->length);
c->length = 64;
c->name[0] = 0;
+ c->addr = in6addr_any;
list_add(&c->head, &prefix->assignments);
// Excluded prefix
c->assigned = ntohl(prefix->excl_addr.s6_addr32[1]) &
((1 << (64 - prefix->length)) - 1);
c->length = prefix->excl_length;
+ c->addr = in6addr_any;
memcpy(c->name, name, sizeof(name));
list_add(&c->head, &prefix->assignments);
}
c = malloc(sizeof(*c) + namelen);
c->length = iface->assignment_length;
c->assigned = iface->assignment_hint;
+ c->addr = in6addr_any;
c->enabled = false;
memcpy(c->name, iface->name, namelen);
prefix_old = container_of(node_old, struct device_prefix, node);
prefix_new = container_of(node_new, struct device_prefix, node);
+ struct interface_ip_settings *ip = container_of(tree, struct interface_ip_settings, prefix);
+ if (tree && (!node_new || !node_old))
+ ip->iface->updated |= IUF_PREFIX;
+
struct device_route route;
memset(&route, 0, sizeof(route));
route.flags = DEVADDR_INET6;
} else if (node_new) {
// Set null-route to avoid routing loops
system_add_route(NULL, &route);
- interface_update_prefix_assignments(prefix_new, true);
+
+ if (!prefix_new->iface || !prefix_new->iface->proto_ip.no_delegation)
+ interface_update_prefix_assignments(prefix_new, true);
} else if (node_old) {
// Remove null-route
interface_update_prefix_assignments(prefix_old, false);
}
if (node_old) {
- list_del(&prefix_old->head);
+ if (prefix_old->head.next)
+ list_del(&prefix_old->head);
free(prefix_old);
}
- if (node_new)
+ if (node_new && (!prefix_new->iface || !prefix_new->iface->proto_ip.no_delegation))
list_add(&prefix_new->head, &prefixes);
}
}
static void
-write_resolv_conf_entries(FILE *f, struct interface_ip_settings *ip)
+write_resolv_conf_entries(FILE *f, struct interface_ip_settings *ip, const char *dev)
{
struct dns_server *s;
struct dns_search_domain *d;
if (!str)
continue;
- fprintf(f, "nameserver %s\n", str);
+ if (s->af == AF_INET6 && IN6_IS_ADDR_LINKLOCAL(&s->addr.in6))
+ fprintf(f, "nameserver %s%%%s\n", str, dev);
+ else
+ fprintf(f, "nameserver %s\n", str);
}
vlist_simple_for_each_element(&ip->dns_search, d, node) {
continue;
fprintf(f, "# Interface %s\n", iface->name);
- write_resolv_conf_entries(f, &iface->config_ip);
+ write_resolv_conf_entries(f, &iface->config_ip, iface->ifname);
if (!iface->proto_ip.no_dns)
- write_resolv_conf_entries(f, &iface->proto_ip);
+ write_resolv_conf_entries(f, &iface->proto_ip, iface->ifname);
}
fflush(f);
rewind(f);
struct device_addr *addr;
struct device_route *route;
struct device *dev;
+ struct interface *iface;
ip->enabled = enabled;
- dev = ip->iface->l3_dev.dev;
+ iface = ip->iface;
+ dev = iface->l3_dev.dev;
if (!dev)
return;
if (addr->enabled == enabled)
continue;
- if (enabled)
+ if (enabled) {
system_add_address(dev, addr);
- else
+ if (iface->metric)
+ interface_handle_subnet_route(iface, addr, true);
+ } else {
+ interface_handle_subnet_route(iface, addr, false);
system_del_address(dev, addr);
+ }
addr->enabled = enabled;
}
if (!(route->flags & DEVROUTE_METRIC))
route->metric = ip->iface->metric;
- system_add_route(dev, route);
+ if (!(route->flags & DEVROUTE_TABLE)) {
+ route->flags &= ~DEVROUTE_SRCTABLE;
+ route->table = ((route->flags & DEVADDR_FAMILY) == DEVADDR_INET6) ?
+ iface->ip6table : iface->ip4table;
+
+ if (route->table)
+ route->flags |= DEVROUTE_SRCTABLE;
+ }
+
+ if (system_add_route(dev, route))
+ route->failed = true;
} else
system_del_route(dev, route);
route->enabled = _enabled;
if (!strcmp(a->name, ip->iface->name))
interface_set_prefix_address(a, c, ip->iface, enabled);
- if (ip->iface && ip->iface->l3_dev.dev) {
- set_ip_lo_policy(enabled, true, ip->iface);
- set_ip_lo_policy(enabled, false, ip->iface);
-
+ if (ip->iface && ip->iface->l3_dev.dev)
set_ip_source_policy(enabled, true, IPRULE_PRIORITY_REJECT + ip->iface->l3_dev.dev->ifindex,
NULL, 0, 0, ip->iface, "failed_policy");
- }
}
void
__interface_ip_init(&iface->proto_ip, iface);
__interface_ip_init(&iface->config_ip, iface);
vlist_init(&iface->host_routes, route_cmp, interface_update_host_route);
-
}
static void
projects / project / netifd.git / blobdiff