#include <string.h>
#include <stdlib.h>
#include <stdio.h>
+#include <libgen.h>
+#include <sys/stat.h>
#include <limits.h>
#include <arpa/inet.h>
#include <netinet/in.h>
+#ifdef linux
+#include <netinet/ether.h>
+#else
+#include <net/ethernet.h>
+#endif
+
#include "netifd.h"
#include "device.h"
#include "interface.h"
ROUTE_SOURCE,
ROUTE_ONLINK,
ROUTE_TYPE,
+ ROUTE_PROTO,
__ROUTE_MAX
};
[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 }
+ [ROUTE_TYPE] = { .name = "type", .type = BLOBMSG_TYPE_STRING },
+ [ROUTE_PROTO] = { .name = "proto", .type = BLOBMSG_TYPE_STRING },
};
const struct uci_blob_param_list route_attr_list = {
.params = route_attr,
};
+enum {
+ NEIGHBOR_INTERFACE,
+ NEIGHBOR_ADDRESS,
+ NEIGHBOR_MAC,
+ NEIGHBOR_PROXY,
+ NEIGHBOR_ROUTER,
+ __NEIGHBOR_MAX
+};
+
+static const struct blobmsg_policy neighbor_attr[__NEIGHBOR_MAX]={
+ [NEIGHBOR_INTERFACE]= { .name = "interface", .type = BLOBMSG_TYPE_STRING},
+ [NEIGHBOR_ADDRESS]= { .name = "ipaddr", .type = BLOBMSG_TYPE_STRING},
+ [NEIGHBOR_MAC]= { .name = "mac", .type = BLOBMSG_TYPE_STRING},
+ [NEIGHBOR_PROXY]= { .name = "proxy", .type = BLOBMSG_TYPE_BOOL},
+ [NEIGHBOR_ROUTER]= {.name = "router", .type = BLOBMSG_TYPE_BOOL},
+};
+
+const struct uci_blob_param_list neighbor_attr_list = {
+ .n_params = __NEIGHBOR_MAX,
+ .params = neighbor_attr,
+};
+
struct list_head prefixes = LIST_HEAD_INIT(prefixes);
static struct device_prefix *ula_prefix = NULL;
static int set_ip_source_policy(bool add, bool v6, unsigned int priority,
const union if_addr *addr, uint8_t mask, unsigned int table,
- struct interface *in_iface, const char *action)
+ struct interface *in_iface, const char *action, bool src)
{
struct iprule rule = {
.flags = IPRULE_PRIORITY,
};
if (addr) {
- rule.flags |= IPRULE_SRC;
- rule.src_addr = *addr;
- rule.src_mask = mask;
+ if (src) {
+ rule.flags |= IPRULE_SRC;
+ rule.src_addr = *addr;
+ rule.src_mask = mask;
+ } else {
+ rule.flags |= IPRULE_DEST;
+ rule.dest_addr = *addr;
+ rule.dest_mask = mask;
+ }
}
if (table) {
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)
{
if (v6 != ((addr->flags & DEVADDR_FAMILY) == DEVADDR_INET6))
continue;
- // Handle offlink addresses correctly
+ if (((addr->flags & DEVADDR_FAMILY) == DEVADDR_INET4) &&
+ addr->point_to_point && a->in.s_addr == addr->point_to_point)
+ return true;
+
+ /* Handle offlink addresses correctly */
unsigned int mask = addr->mask;
if ((addr->flags & DEVADDR_FAMILY) == DEVADDR_INET6 &&
(addr->flags & DEVADDR_OFFLINK))
if (route->flags & DEVROUTE_TABLE)
continue;
- if (!*res || route->mask < (*res)->mask)
+ if (!*res || route->mask > (*res)->mask)
*res = route;
}
}
{
struct device_route *route, *r_next = NULL;
bool defaultroute_target = false;
+ union if_addr addr_zero;
int addrsize = v6 ? sizeof(addr->in6) : sizeof(addr->in);
- route = calloc(1, sizeof(*route));
- if (!route)
- return NULL;
-
- route->flags = v6 ? DEVADDR_INET6 : DEVADDR_INET4;
- route->mask = v6 ? 128 : 32;
- if (memcmp(&route->addr, addr, addrsize) == 0)
+ memset(&addr_zero, 0, sizeof(addr_zero));
+ if (memcmp(&addr_zero, addr, addrsize) == 0)
defaultroute_target = true;
- else
- memcpy(&route->addr, addr, addrsize);
if (iface) {
/* look for locally addressable target first */
if (interface_ip_find_addr_target(iface, addr, v6))
- goto done;
+ return iface;
/* do not stop at the first route, let the lookup compare
* masks to find the best match */
vlist_for_each_element(&interfaces, iface, node) {
/* look for locally addressable target first */
if (interface_ip_find_addr_target(iface, addr, v6))
- goto done;
+ return iface;
/* do not stop at the first route, let the lookup compare
* masks to find the best match */
}
}
- if (!r_next) {
- free(route);
+ if (!r_next)
return NULL;
- }
iface = r_next->iface;
+ if (defaultroute_target)
+ return iface;
+
+ route = calloc(1, sizeof(*route));
+ if (!route)
+ return NULL;
+
+ route->flags = v6 ? DEVADDR_INET6 : DEVADDR_INET4;
+ route->mask = v6 ? 128 : 32;
+ memcpy(&route->addr, addr, addrsize);
memcpy(&route->nexthop, &r_next->nexthop, sizeof(route->nexthop));
route->mtu = r_next->mtu;
route->metric = r_next->metric;
route->table = r_next->table;
-
-done:
route->iface = iface;
- if (defaultroute_target)
- free(route);
- else
- vlist_add(&iface->host_routes, &route->node, route);
+ vlist_add(&iface->host_routes, &route->node, route);
+
return iface;
}
+static void
+interface_set_route_info(struct interface *iface, struct device_route *route)
+{
+ bool v6 = ((route->flags & DEVADDR_FAMILY) == DEVADDR_INET6);
+
+ if (!iface)
+ return;
+
+ if (!(route->flags & DEVROUTE_METRIC))
+ route->metric = iface->metric;
+
+ if (!(route->flags & DEVROUTE_TABLE)) {
+ route->table = (v6) ? iface->ip6table : iface->ip4table;
+ if (route->table)
+ route->flags |= DEVROUTE_SRCTABLE;
+ }
+}
+
+void
+interface_ip_add_neighbor(struct interface *iface, struct blob_attr *attr, bool v6)
+{
+ struct interface_ip_settings *ip;
+ struct blob_attr *tb[__NEIGHBOR_MAX], *cur;
+ struct device_neighbor *neighbor;
+ int af = v6 ? AF_INET6: AF_INET;
+ struct ether_addr *ea;
+
+ blobmsg_parse(neighbor_attr, __NEIGHBOR_MAX, tb, blobmsg_data(attr), blobmsg_data_len(attr));
+
+ if (!iface) {
+ if ((cur = tb[NEIGHBOR_INTERFACE]) == NULL)
+ return;
+
+ iface = vlist_find(&interfaces, blobmsg_data(cur), iface, node);
+
+ if (!iface)
+ return;
+
+ ip = &iface->config_ip;
+ } else
+ ip = &iface->proto_ip;
+
+ neighbor = calloc(1,sizeof(*neighbor));
+ if (!neighbor)
+ return;
+
+ neighbor->flags = v6 ? DEVADDR_INET6 : DEVADDR_INET4;
+
+ if ((cur = tb[NEIGHBOR_ADDRESS]) != NULL){
+ if (!inet_pton(af, blobmsg_data(cur), &neighbor->addr))
+ goto error;
+ } else
+ goto error;
+
+ if ((cur = tb[NEIGHBOR_MAC]) != NULL) {
+ neighbor->flags |= DEVNEIGH_MAC;
+ ea = ether_aton(blobmsg_data(cur));
+ if (!ea)
+ goto error;
+
+ memcpy(neighbor->macaddr, ea, 6);
+ }
+
+ if ((cur = tb[NEIGHBOR_PROXY]) != NULL)
+ neighbor->proxy = blobmsg_get_bool(cur);
+
+ if ((cur = tb[NEIGHBOR_ROUTER]) != NULL)
+ neighbor->router = blobmsg_get_bool(cur);
+
+ vlist_add(&ip->neighbor, &neighbor->node, neighbor);
+ return;
+
+error:
+ free(neighbor);
+}
+
void
interface_ip_add_route(struct interface *iface, struct blob_attr *attr, bool v6)
{
struct blob_attr *tb[__ROUTE_MAX], *cur;
struct device_route *route;
int af = v6 ? AF_INET6 : AF_INET;
- bool is_proto_route = !!iface;
blobmsg_parse(route_attr, __ROUTE_MAX, tb, blobmsg_data(attr), blobmsg_data_len(attr));
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);
route->flags |= DEVROUTE_MTU;
}
- // Use source-based routing
+ /* Use source-based routing */
if ((cur = tb[ROUTE_SOURCE]) != NULL) {
char *saveptr, *source = alloca(blobmsg_data_len(cur));
memcpy(source, blobmsg_data(cur), blobmsg_data_len(cur));
const char *mask = strtok_r(NULL, "/", &saveptr);
if (!addr || inet_pton(af, addr, &route->source) < 1) {
- DPRINTF("Failed to parse route source: %s\n", addr);
+ DPRINTF("Failed to parse route source: %s\n", addr ? addr : "NULL");
goto error;
}
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;
- }
-
if ((cur = tb[ROUTE_TABLE]) != NULL) {
if (!system_resolve_rt_table(blobmsg_data(cur), &route->table)) {
DPRINTF("Failed to resolve routing table: %s\n", (char *) blobmsg_data(cur));
if ((cur = tb[ROUTE_VALID]) != NULL) {
int64_t valid = blobmsg_get_u32(cur);
int64_t valid_until = valid + (int64_t)system_get_rtime();
- if (valid_until <= LONG_MAX && valid != 0xffffffffLL) // Catch overflow
+ if (valid_until <= LONG_MAX && valid != 0xffffffffLL) /* Catch overflow */
route->valid_until = valid_until;
}
route->flags |= DEVROUTE_TYPE;
}
+ if ((cur = tb[ROUTE_PROTO]) != NULL) {
+ if (!system_resolve_rt_proto(blobmsg_data(cur), &route->proto)) {
+ DPRINTF("Failed to resolve proto type: %s\n", (char *) blobmsg_data(cur));
+ goto error;
+ }
+ route->flags |= DEVROUTE_PROTO;
+ }
+
+ interface_set_route_info(iface, route);
vlist_add(&ip->route, &route->node, route);
return;
offsetof(struct device_addr, flags));
}
+static int
+neighbor_cmp(const void *k1, const void *k2, void *ptr)
+{
+ const struct device_neighbor *n1 = k1, *n2 = k2;
+
+ return memcmp(&n1->addr, &n2->addr, sizeof(n2->addr));
+}
+
static int
route_cmp(const void *k1, const void *k2, void *ptr)
{
interface_handle_subnet_route(struct interface *iface, struct device_addr *addr, bool add)
{
struct device *dev = iface->l3_dev.dev;
- struct device_route route;
+ struct device_route *r = &addr->subnet;
if (addr->flags & DEVADDR_OFFLINK)
return;
- memset(&route, 0, sizeof(route));
- route.iface = iface;
- route.flags = addr->flags;
- route.mask = addr->mask;
- memcpy(&route.addr, &addr->addr, sizeof(route.addr));
- clear_if_addr(&route.addr, route.mask);
-
- if (add) {
- route.flags |= DEVADDR_KERNEL;
- system_del_route(dev, &route);
-
- route.flags &= ~DEVADDR_KERNEL;
- route.metric = iface->metric;
- system_add_route(dev, &route);
- } else {
- system_del_route(dev, &route);
+ if (!add) {
+ if (!addr->subnet.iface)
+ return;
+
+ system_del_route(dev, r);
+ memset(r, 0, sizeof(*r));
+ return;
}
+
+ r->iface = iface;
+ r->flags = addr->flags;
+ r->mask = addr->mask;
+ memcpy(&r->addr, &addr->addr, sizeof(r->addr));
+ clear_if_addr(&r->addr, r->mask);
+
+ if (!system_resolve_rt_proto("kernel", &r->proto))
+ return;
+
+ r->flags |= DEVROUTE_PROTO;
+ system_del_route(dev, r);
+
+ r->flags &= ~DEVROUTE_PROTO;
+ interface_set_route_info(iface, r);
+
+ system_add_route(dev, r);
+}
+
+static void
+interface_add_addr_rules(struct device_addr *addr, bool enabled)
+{
+ bool v6 = (addr->flags & DEVADDR_FAMILY) == DEVADDR_INET6;
+
+ set_ip_source_policy(enabled, v6, IPRULE_PRIORITY_ADDR, &addr->addr,
+ (v6) ? 128 : 32, addr->policy_table, NULL, NULL,
+ true);
+ set_ip_source_policy(enabled, v6, IPRULE_PRIORITY_ADDR_MASK,
+ &addr->addr, addr->mask, addr->policy_table, NULL,
+ NULL, false);
}
static void
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);
+ }
}
}
a_old->preferred_until != a_new->preferred_until)
replace = true;
- if ((a_new->flags & DEVADDR_FAMILY) == DEVADDR_INET4 &&
- a_new->broadcast != a_old->broadcast)
+ if (((a_new->flags & DEVADDR_FAMILY) == DEVADDR_INET4) &&
+ (a_new->broadcast != a_old->broadcast ||
+ a_new->point_to_point != a_old->point_to_point))
keep = false;
}
if (node_old) {
- if (!(a_old->flags & DEVADDR_EXTERNAL) && a_old->enabled && !keep) {
- interface_handle_subnet_route(iface, a_old, false);
-
- 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).
- if (table) {
- set_ip_source_policy(false, v6, IPRULE_PRIORITY_ADDR, &a_old->addr,
- (v6) ? 128 : 32, table, NULL, NULL);
- set_ip_source_policy(false, v6, IPRULE_PRIORITY_NW, &a_old->addr,
- a_old->mask, table, NULL, NULL);
+ if (a_old->enabled && !keep) {
+ /*
+ * 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)
+ */
+ if (a_old->policy_table)
+ interface_add_addr_rules(a_old, false);
+
+ if (!(a_old->flags & DEVADDR_EXTERNAL)) {
+ interface_handle_subnet_route(iface, a_old, false);
+ system_del_address(dev, a_old);
}
-
- 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)) {
- if (system_add_address(dev, a_new))
- a_new->failed = true;
- if (!keep) {
- if ((a_new->flags & DEVADDR_FAMILY) == DEVADDR_INET6)
- v6 = true;
+ if ((a_new->flags & DEVADDR_FAMILY) == DEVADDR_INET6)
+ v6 = true;
- unsigned int table = (v6) ? iface->ip6table : iface->ip4table;
+ a_new->policy_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);
- set_ip_source_policy(true, v6, IPRULE_PRIORITY_NW, &a_new->addr,
- a_new->mask, table, NULL, NULL);
- }
+ if (!keep || replace) {
+ if (!(a_new->flags & DEVADDR_EXTERNAL)) {
+ if (system_add_address(dev, a_new))
+ a_new->failed = true;
+
+ if (iface->metric || a_new->policy_table)
+ interface_handle_subnet_route(iface, a_new, true);
}
- if (iface->metric)
- interface_handle_subnet_route(iface, a_new, true);
+ if (!keep) {
+ if (a_new->policy_table)
+ interface_add_addr_rules(a_new, true);
+ }
}
}
}
return ip->enabled;
}
+static void
+interface_update_proto_neighbor(struct vlist_tree *tree,
+ struct vlist_node * node_new,
+ struct vlist_node *node_old)
+{
+ struct device *dev;
+ struct device_neighbor *neighbor_old, *neighbor_new;
+ struct interface_ip_settings *ip;
+ bool keep = false;
+
+ ip = container_of(tree, struct interface_ip_settings, neighbor);
+ dev = ip->iface->l3_dev.dev;
+
+ neighbor_old = container_of(node_old, struct device_neighbor, node);
+ neighbor_new = container_of(node_new, struct device_neighbor, node);
+
+ if (node_old && node_new) {
+ keep = (!memcmp(neighbor_old->macaddr, neighbor_new->macaddr, sizeof(neighbor_old->macaddr)) &&
+ (neighbor_old->proxy == neighbor_new->proxy) &&
+ (neighbor_old->router == neighbor_new->router));
+ }
+
+ if (node_old) {
+ if (!keep && neighbor_old->enabled)
+ system_del_neighbor(dev, neighbor_old);
+
+ free(neighbor_old);
+ }
+
+ if (node_new) {
+ if (!keep && ip->enabled)
+ if (system_add_neighbor(dev, neighbor_new))
+ neighbor_new->failed = true;
+
+ neighbor_new->enabled = ip->enabled;
+ }
+}
+
static void
interface_update_proto_route(struct vlist_tree *tree,
struct vlist_node *node_new,
if (node_old && node_new)
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->valid_until == route_new->valid_until) && !route_old->failed;
+ (route_old->proto == route_new->proto) && !route_old->failed;
if (node_old) {
if (!(route_old->flags & DEVADDR_EXTERNAL) && route_old->enabled && !keep)
addr->s6_addr32[3] = (uint32_t)mrand48();
}
-static void
+static bool
eui64_ifaceid(struct interface *iface, struct in6_addr *addr)
{
+ struct device_settings st;
+
+ device_merge_settings(iface->l3_dev.dev, &st);
+
+ if (!(st.flags & DEV_OPT_MACADDR))
+ return false;
+
/* 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);
+ memcpy(ifaceid, st.macaddr, 3);
+ memcpy(ifaceid + 5, st.macaddr + 3, 3);
ifaceid[3] = 0xff;
ifaceid[4] = 0xfe;
ifaceid[0] ^= 0x02;
+
+ return true;
}
-static void
+static bool
generate_ifaceid(struct interface *iface, struct in6_addr *addr)
{
+ bool ret = true;
+
/* generate new iface id */
switch (iface->assignment_iface_id_selection) {
case IFID_FIXED:
break;
case IFID_EUI64:
/* eui64 */
- eui64_ifaceid(iface, addr);
+ ret = eui64_ifaceid(iface, addr);
+ break;
+ default:
+ ret = false;
break;
}
+ return ret;
}
static void
memset(&addr, 0, sizeof(addr));
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.addr.in6 = assignment->addr;
addr.mask = assignment->length;
- addr.flags = DEVADDR_INET6 | DEVADDR_OFFLINK;
+ addr.flags = DEVADDR_INET6;
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;
+ if (iface->ip6table)
+ set_ip_source_policy(false, true, IPRULE_PRIORITY_ADDR_MASK, &addr.addr,
+ addr.mask < 64 ? 64 : addr.mask, iface->ip6table, NULL, NULL, false);
+
if (prefix->iface) {
if (prefix->iface->ip6table)
set_ip_source_policy(false, true, IPRULE_PRIORITY_NW, &addr.addr,
- addr.mask, prefix->iface->ip6table, iface, NULL);
+ addr.mask, prefix->iface->ip6table, iface, NULL, true);
set_ip_source_policy(false, true, IPRULE_PRIORITY_REJECT, &addr.addr,
- addr.mask, 0, iface, "unreachable");
+ addr.mask, 0, iface, "unreachable", true);
}
+ clear_if_addr(&route.addr, route.mask);
+ interface_set_route_info(iface, &route);
+
system_del_route(l3_downlink, &route);
system_add_address(l3_downlink, &addr);
+ assignment->addr = in6addr_any;
assignment->enabled = false;
- } else if (add && (iface->state == IFS_UP || iface->state == IFS_SETUP) &&
- !system_add_address(l3_downlink, &addr)) {
+ } else if (add && (iface->state == IFS_UP || iface->state == IFS_SETUP)) {
+ if (IN6_IS_ADDR_UNSPECIFIED(&addr.addr.in6)) {
+ addr.addr.in6 = prefix->addr;
+ addr.addr.in6.s6_addr32[1] |= htonl(assignment->assigned);
+ if (!generate_ifaceid(iface, &addr.addr.in6))
+ return;
+
+ assignment->addr = addr.addr.in6;
+ route.addr = addr.addr;
+ }
- if (prefix->iface && !assignment->enabled) {
- set_ip_source_policy(true, true, IPRULE_PRIORITY_REJECT, &addr.addr,
- addr.mask, 0, iface, "unreachable");
+ addr.flags |= DEVADDR_OFFLINK;
+ if (system_add_address(l3_downlink, &addr))
+ return;
- if (prefix->iface->ip6table)
- set_ip_source_policy(true, true, IPRULE_PRIORITY_NW, &addr.addr,
- addr.mask, prefix->iface->ip6table, iface, NULL);
+ if (!assignment->enabled) {
+ if (iface->ip6table)
+ set_ip_source_policy(true, true, IPRULE_PRIORITY_ADDR_MASK, &addr.addr,
+ addr.mask < 64 ? 64 : addr.mask, iface->ip6table, NULL, NULL, false);
+
+ if (prefix->iface) {
+ set_ip_source_policy(true, true, IPRULE_PRIORITY_REJECT, &addr.addr,
+ addr.mask, 0, iface, "unreachable", true);
+
+ if (prefix->iface->ip6table)
+ set_ip_source_policy(true, true, IPRULE_PRIORITY_NW, &addr.addr,
+ addr.mask, prefix->iface->ip6table, iface, NULL, true);
+ }
}
- route.metric = iface->metric;
+ clear_if_addr(&route.addr, route.mask);
+ interface_set_route_info(iface, &route);
+
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);
+ if (mtu > 0 && mtu_old != mtu) {
+ if (system_update_ipv6_mtu(l3_downlink, mtu) < 0 && mtu < mtu_old)
+ netifd_log_message(L_WARNING, "Failed to set IPv6 mtu to %d "
+ "on interface '%s'\n", mtu, iface->name);
+ }
}
assignment->enabled = true;
return false;
}
+/*
+ * Sorting of assignment entries:
+ * Primary on assignment length: smallest assignment first
+ * Secondary on assignment weight: highest weight first
+ * Finally alphabetical order of interface names
+ */
+static int prefix_assignment_cmp(const void *k1, const void *k2, void *ptr)
+{
+ const struct device_prefix_assignment *a1 = k1, *a2 = k2;
+
+ if (a1->length != a2->length)
+ return a1->length - a2->length;
+
+ if (a1->weight != a2->weight)
+ return a2->weight - a1->weight;
+
+ return strcmp(a1->name, a2->name);
+}
+
static void interface_update_prefix_assignments(struct device_prefix *prefix, bool setup)
{
struct device_prefix_assignment *c;
struct interface *iface;
- // Delete all assignments
+ /* Delete all assignments */
while (!list_empty(&prefix->assignments)) {
c = list_first_entry(&prefix->assignments,
struct device_prefix_assignment, head);
if (!setup)
return;
- // End-of-assignment sentinel
+ /* End-of-assignment sentinel */
c = malloc(sizeof(*c) + 1);
+ if (!c)
+ return;
+
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
+ /* Excluded prefix */
if (prefix->excl_length > 0) {
const char name[] = "!excluded";
c = malloc(sizeof(*c) + sizeof(name));
- 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);
+ if (c) {
+ 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);
+ }
}
bool assigned_any = false;
- struct list_head assign_later = LIST_HEAD_INIT(assign_later);
+ struct {
+ struct avl_node node;
+ } *entry, *n_entry;
+ struct avl_tree assign_later;
+
+ avl_init(&assign_later, prefix_assignment_cmp, false, NULL);
+
vlist_for_each_element(&interfaces, iface, node) {
if (iface->assignment_length < 48 ||
iface->assignment_length > 64)
continue;
- // Test whether there is a matching class
+ /* Test whether there is a matching class */
if (!list_empty(&iface->assignment_classes)) {
bool found = false;
size_t namelen = strlen(iface->name) + 1;
c = malloc(sizeof(*c) + namelen);
+ if (!c)
+ continue;
+
c->length = iface->assignment_length;
c->assigned = iface->assignment_hint;
+ c->weight = iface->assignment_weight;
c->addr = in6addr_any;
c->enabled = false;
memcpy(c->name, iface->name, namelen);
- // First process all custom assignments, put all others in later-list
+ /* First process all custom assignments, put all others in later-list */
if (c->assigned == -1 || !interface_prefix_assign(&prefix->assignments, c)) {
if (c->assigned != -1) {
c->assigned = -1;
"of size %hhu for %s, trying other\n", c->length, c->name);
}
- struct list_head *next = &assign_later;
- struct device_prefix_assignment *n;
- list_for_each_entry(n, &assign_later, head) {
- if (n->length < c->length) {
- next = &n->head;
- break;
- }
+ entry = calloc(1, sizeof(*entry));
+ if (!entry) {
+ free(c);
+ continue;
}
- list_add_tail(&c->head, next);
+
+ entry->node.key = c;
+ avl_insert(&assign_later, &entry->node);
}
if (c->assigned != -1)
assigned_any = true;
}
- // Then try to assign all other + failed custom assignments
- while (!list_empty(&assign_later)) {
- c = list_first_entry(&assign_later, struct device_prefix_assignment, head);
- list_del(&c->head);
-
+ /* Then try to assign all other + failed custom assignments */
+ avl_for_each_element_safe(&assign_later, entry, node, n_entry) {
bool assigned = false;
+
+ c = (struct device_prefix_assignment *)entry->node.key;
+ avl_delete(&assign_later, &entry->node);
+
do {
assigned = interface_prefix_assign(&prefix->assignments, c);
} while (!assigned && ++c->length <= 64);
netifd_log_message(L_WARNING, "Failed to assign subprefix "
"of size %hhu for %s\n", c->length, c->name);
free(c);
- } else {
+ } else
assigned_any = true;
- }
+
+ free(entry);
}
list_for_each_entry(c, &prefix->assignments, head)
refresh = hint;
}
+void interface_update_prefix_delegation(struct interface_ip_settings *ip)
+{
+ struct device_prefix *prefix;
+
+ vlist_for_each_element(&ip->prefix, prefix, node) {
+ interface_update_prefix_assignments(prefix, !ip->no_delegation);
+
+ if (ip->no_delegation) {
+ if (prefix->head.next)
+ list_del(&prefix->head);
+ } else
+ list_add(&prefix->head, &prefixes);
+ }
+}
static void
interface_update_prefix(struct vlist_tree *tree,
struct interface *iface;
if (node_old && node_new) {
- // Move assignments and refresh addresses to update valid times
+ /* Move assignments and refresh addresses to update valid times */
list_splice(&prefix_old->assignments, &prefix_new->assignments);
list_for_each_entry(c, &prefix_new->assignments, head)
if ((iface = vlist_find(&interfaces, c->name, iface, node)))
interface_set_prefix_address(c, prefix_new, iface, true);
+
+ if (prefix_new->preferred_until != prefix_old->preferred_until ||
+ prefix_new->valid_until != prefix_old->valid_until)
+ ip->iface->updated |= IUF_PREFIX;
} else if (node_new) {
- // Set null-route to avoid routing loops
+ /* Set null-route to avoid routing loops */
system_add_route(NULL, &route);
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
+ /* Remove null-route */
interface_update_prefix_assignments(prefix_old, false);
system_del_route(NULL, &route);
}
pclass = (iface) ? iface->name : "local";
struct device_prefix *prefix = calloc(1, sizeof(*prefix) + strlen(pclass) + 1);
+ if (!prefix)
+ return NULL;
+
prefix->length = length;
prefix->addr = *addr;
prefix->preferred_until = preferred_until;
}
}
-void
+static void
interface_add_dns_server(struct interface_ip_settings *ip, const char *str)
{
struct dns_server *s;
if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
continue;
- if (!blobmsg_check_attr(cur, NULL))
+ if (!blobmsg_check_attr(cur, false))
continue;
interface_add_dns_server(ip, blobmsg_data(cur));
if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
continue;
- if (!blobmsg_check_attr(cur, NULL))
+ if (!blobmsg_check_attr(cur, false))
continue;
interface_add_dns_search_domain(ip, blobmsg_data(cur));
}
}
-void
-interface_write_resolv_conf(void)
+/* Sorting of interface resolver entries : */
+/* Primary on interface dns_metric : lowest metric first */
+/* Secondary on interface metric : lowest metric first */
+/* Finally alphabetical order of interface names */
+static int resolv_conf_iface_cmp(const void *k1, const void *k2, void *ptr)
+{
+ const struct interface *iface1 = k1, *iface2 = k2;
+
+ if (iface1->dns_metric != iface2->dns_metric)
+ return iface1->dns_metric - iface2->dns_metric;
+
+ if (iface1->metric != iface2->metric)
+ return iface1->metric - iface2->metric;
+
+ return strcmp(iface1->name, iface2->name);
+}
+
+static void
+__interface_write_dns_entries(FILE *f, const char *jail)
{
struct interface *iface;
- char *path = alloca(strlen(resolv_conf) + 5);
- FILE *f;
- uint32_t crcold, crcnew;
+ struct {
+ struct avl_node node;
+ } *entry, *n_entry;
+ struct avl_tree resolv_conf_iface_entries;
- sprintf(path, "%s.tmp", resolv_conf);
- unlink(path);
- f = fopen(path, "w+");
- if (!f) {
- D(INTERFACE, "Failed to open %s for writing\n", path);
- return;
- }
+ avl_init(&resolv_conf_iface_entries, resolv_conf_iface_cmp, false, NULL);
vlist_for_each_element(&interfaces, iface, node) {
if (iface->state != IFS_UP)
continue;
+ if (jail && (!iface->jail || strcmp(jail, iface->jail)))
+ continue;
+
if (vlist_simple_empty(&iface->proto_ip.dns_search) &&
vlist_simple_empty(&iface->proto_ip.dns_servers) &&
- vlist_simple_empty(&iface->config_ip.dns_search) &&
+ vlist_simple_empty(&iface->config_ip.dns_search) &&
vlist_simple_empty(&iface->config_ip.dns_servers))
continue;
+ entry = calloc(1, sizeof(*entry));
+ if (!entry)
+ continue;
+
+ entry->node.key = iface;
+ avl_insert(&resolv_conf_iface_entries, &entry->node);
+ }
+
+ avl_for_each_element(&resolv_conf_iface_entries, entry, node) {
+ iface = (struct interface *)entry->node.key;
+ struct device *dev = iface->l3_dev.dev;
+
fprintf(f, "# Interface %s\n", iface->name);
- write_resolv_conf_entries(f, &iface->config_ip, iface->ifname);
+
+ write_resolv_conf_entries(f, &iface->config_ip, dev->ifname);
+
if (!iface->proto_ip.no_dns)
- write_resolv_conf_entries(f, &iface->proto_ip, iface->ifname);
+ write_resolv_conf_entries(f, &iface->proto_ip, dev->ifname);
+ }
+
+ avl_remove_all_elements(&resolv_conf_iface_entries, entry, node, n_entry)
+ free(entry);
+}
+
+void
+interface_write_resolv_conf(const char *jail)
+{
+ size_t plen = (jail ? strlen(jail) + 1 : 0 ) + strlen(resolv_conf) + 1;
+ char *path = alloca(plen);
+ char *dpath = alloca(plen);
+ char *tmppath = alloca(plen + 4);
+ FILE *f;
+ uint32_t crcold, crcnew;
+
+ if (jail) {
+ sprintf(path, "/tmp/resolv.conf-%s.d/resolv.conf.auto", jail);
+ strcpy(dpath, path);
+ dpath = dirname(dpath);
+ mkdir(dpath, 0755);
+ } else {
+ strcpy(path, resolv_conf);
}
+
+ sprintf(tmppath, "%s.tmp", path);
+ unlink(tmppath);
+ f = fopen(tmppath, "w+");
+ if (!f) {
+ D(INTERFACE, "Failed to open %s for writing\n", path);
+ return;
+ }
+
+ __interface_write_dns_entries(f, jail);
+
fflush(f);
rewind(f);
crcnew = crc32_file(f);
fclose(f);
crcold = crcnew + 1;
- f = fopen(resolv_conf, "r");
+ f = fopen(path, "r");
if (f) {
crcold = crc32_file(f);
fclose(f);
}
if (crcold == crcnew) {
- unlink(path);
- } else if (rename(path, resolv_conf) < 0) {
- D(INTERFACE, "Failed to replace %s\n", resolv_conf);
- unlink(path);
+ unlink(tmppath);
+ } else if (rename(tmppath, path) < 0) {
+ D(INTERFACE, "Failed to replace %s\n", path);
+ unlink(tmppath);
}
}
{
struct device_addr *addr;
struct device_route *route;
+ struct device_neighbor *neighbor;
struct device *dev;
struct interface *iface;
return;
vlist_for_each_element(&ip->addr, addr, node) {
+ bool v6 = ((addr->flags & DEVADDR_FAMILY) == DEVADDR_INET6) ? true : false;
+
+ if (addr->flags & DEVADDR_EXTERNAL)
+ continue;
+
if (addr->enabled == enabled)
continue;
if (enabled) {
system_add_address(dev, addr);
- if (iface->metric)
+
+ addr->policy_table = (v6) ? iface->ip6table : iface->ip4table;
+ if (iface->metric || addr->policy_table)
interface_handle_subnet_route(iface, addr, true);
+
+ if (addr->policy_table)
+ interface_add_addr_rules(addr, true);
} else {
interface_handle_subnet_route(iface, addr, false);
system_del_address(dev, addr);
+
+ if (addr->policy_table)
+ interface_add_addr_rules(addr, false);
}
addr->enabled = enabled;
}
vlist_for_each_element(&ip->route, route, node) {
bool _enabled = enabled;
+ if (route->flags & DEVADDR_EXTERNAL)
+ continue;
+
if (!enable_route(ip, route))
_enabled = false;
-
if (route->enabled == _enabled)
continue;
if (_enabled) {
- if (!(route->flags & DEVROUTE_METRIC))
- route->metric = ip->iface->metric;
+ interface_set_route_info(ip->iface, route);
if (system_add_route(dev, route))
route->failed = true;
route->enabled = _enabled;
}
+ vlist_for_each_element(&ip->neighbor, neighbor, node) {
+ if (neighbor->enabled == enabled)
+ continue;
+
+ if (enabled) {
+ if(system_add_neighbor(dev, neighbor))
+ neighbor->failed = true;
+ } else
+ system_del_neighbor(dev, neighbor);
+
+ neighbor->enabled = enabled;
+ }
+
struct device_prefix *c;
struct device_prefix_assignment *a;
list_for_each_entry(c, &prefixes, head)
if (!strcmp(a->name, ip->iface->name))
interface_set_prefix_address(a, c, ip->iface, enabled);
- if (ip->iface && ip->iface->l3_dev.dev)
+ if (ip->iface->policy_rules_set != enabled &&
+ ip->iface->l3_dev.dev) {
+ set_ip_lo_policy(enabled, true, ip->iface);
+ set_ip_lo_policy(enabled, false, ip->iface);
+
set_ip_source_policy(enabled, true, IPRULE_PRIORITY_REJECT + ip->iface->l3_dev.dev->ifindex,
- NULL, 0, 0, ip->iface, "failed_policy");
+ NULL, 0, 0, ip->iface, "failed_policy", true);
+ ip->iface->policy_rules_set = enabled;
+ }
}
void
vlist_update(&ip->route);
vlist_update(&ip->addr);
vlist_update(&ip->prefix);
+ vlist_update(&ip->neighbor);
}
void
vlist_flush(&ip->route);
vlist_flush(&ip->addr);
vlist_flush(&ip->prefix);
- interface_write_resolv_conf();
+ vlist_flush(&ip->neighbor);
+ interface_write_resolv_conf(ip->iface->jail);
}
void
vlist_simple_flush_all(&ip->dns_search);
vlist_flush_all(&ip->route);
vlist_flush_all(&ip->addr);
+ vlist_flush_all(&ip->neighbor);
vlist_flush_all(&ip->prefix);
}
vlist_simple_init(&ip->dns_search, struct dns_search_domain, node);
vlist_simple_init(&ip->dns_servers, struct dns_server, node);
vlist_init(&ip->route, route_cmp, interface_update_proto_route);
+ vlist_init(&ip->neighbor, neighbor_cmp, interface_update_proto_neighbor);
vlist_init(&ip->addr, addr_cmp, interface_update_proto_addr);
vlist_init(&ip->prefix, prefix_cmp, interface_update_prefix);
}
projects / oweals / netifd.git / blobdiff