#include <libubox/usock.h>
#define ADDR_ENTRY_VALID_IA_ADDR(iface, i, m, addrs) \
- ((iface)->managed == RELAYD_MANAGED_NO_AFLAG || (i) == (m) || \
+ ((iface)->dhcpv6_assignall || (i) == (m) || \
(addrs)[(i)].prefix > 64)
+static void dhcpv6_netevent_cb(unsigned long event, struct netevent_handler_info *info);
static void free_dhcpv6_assignment(struct dhcpv6_assignment *c);
-static void reconf_timer(struct uloop_timeout *event);
-static struct uloop_timeout reconf_event = {.cb = reconf_timer};
+static void handle_addrlist_change(struct netevent_handler_info *info);
+static void start_reconf(struct dhcpv6_assignment *a);
+static void stop_reconf(struct dhcpv6_assignment *a);
+static void valid_until_cb(struct uloop_timeout *event);
+
+static struct netevent_handler dhcpv6_netevent_handler = { .cb = dhcpv6_netevent_cb, };
+static struct uloop_timeout valid_until_timeout = {.cb = valid_until_cb};
static uint32_t serial = 0;
static uint8_t statemd5[16];
int dhcpv6_ia_init(void)
{
- uloop_timeout_set(&reconf_event, 2000);
+ uloop_timeout_set(&valid_until_timeout, 1000);
+
+ netlink_add_netevent_handler(&dhcpv6_netevent_handler);
+
return 0;
}
-int setup_dhcpv6_ia_interface(struct interface *iface, bool enable)
+int dhcpv6_setup_ia_interface(struct interface *iface, bool enable)
{
if (!enable && iface->ia_assignments.next) {
struct dhcpv6_assignment *c;
}
}
- if (enable && iface->dhcpv6 == RELAYD_SERVER) {
+ if (enable && iface->dhcpv6 == MODE_SERVER) {
if (!iface->ia_assignments.next)
INIT_LIST_HEAD(&iface->ia_assignments);
}
if (a->head.next) {
+ a->iface = iface;
if (lease->hostname[0]) {
free(a->hostname);
a->hostname = strdup(lease->hostname);
return 0;
}
+
+static void dhcpv6_netevent_cb(unsigned long event, struct netevent_handler_info *info)
+{
+ struct interface *iface = info->iface;
+
+ if (!iface || iface->dhcpv6 != MODE_SERVER)
+ return;
+
+ switch (event) {
+ case NETEV_ADDR6LIST_CHANGE:
+ handle_addrlist_change(info);
+ break;
+ default:
+ break;
+ }
+}
+
+
static void free_dhcpv6_assignment(struct dhcpv6_assignment *c)
{
if (c->managed_sock.fd.registered) {
if (c->head.next)
list_del(&c->head);
+ if (c->reconf_cnt)
+ stop_reconf(c);
+
free(c->managed);
free(c->hostname);
free(c);
return m;
}
-static int send_reconf(struct interface *iface, struct dhcpv6_assignment *assign)
+static int send_reconf(struct dhcpv6_assignment *assign)
{
struct {
struct dhcpv6_client_header hdr;
.clid_len = htons(assign->clid_len),
.clid_data = {0},
};
+ struct interface *iface = assign->iface;
odhcpd_get_mac(iface, reconf_msg.mac);
memcpy(reconf_msg.clid_data, assign->clid_data, assign->clid_len);
void dhcpv6_enum_ia_addrs(struct interface *iface, struct dhcpv6_assignment *c,
time_t now, dhcpv6_binding_cb_handler_t func, void *arg)
{
- struct odhcpd_ipaddr *addrs = (c->managed) ? c->managed : iface->ia_addr;
- size_t addrlen = (c->managed) ? (size_t)c->managed_size : iface->ia_addr_len;
+ struct odhcpd_ipaddr *addrs = (c->managed) ? c->managed : iface->addr6;
+ size_t addrlen = (c->managed) ? (size_t)c->managed_size : iface->addr6_len;
size_t m = get_preferred_addr(addrs, addrlen);
for (size_t i = 0; i < addrlen; ++i) {
if (!valid_addr(&addrs[i], now))
continue;
- addr = addrs[i].addr;
+ addr = addrs[i].addr.in6;
pref = addrs[i].preferred;
valid = addrs[i].valid;
if (prefix == 128) {
ctxt.buf_len = sizeof(leasebuf);
list_for_each_entry(ctxt.iface, &interfaces, head) {
- if (ctxt.iface->dhcpv6 != RELAYD_SERVER &&
- ctxt.iface->dhcpv4 != RELAYD_SERVER)
+ if (ctxt.iface->dhcpv6 != MODE_SERVER &&
+ ctxt.iface->dhcpv4 != MODE_SERVER)
continue;
- if (ctxt.iface->dhcpv6 == RELAYD_SERVER &&
+ if (ctxt.iface->dhcpv6 == MODE_SERVER &&
ctxt.iface->ia_assignments.next) {
list_for_each_entry(ctxt.c, &ctxt.iface->ia_assignments, head) {
if (!(ctxt.c->flags & OAF_BOUND) || ctxt.c->managed_size < 0)
}
}
- if (ctxt.iface->dhcpv4 == RELAYD_SERVER &&
+ if (ctxt.iface->dhcpv4 == MODE_SERVER &&
ctxt.iface->dhcpv4_assignments.next) {
struct dhcpv4_assignment *c;
list_for_each_entry(c, &ctxt.iface->dhcpv4_assignments, head) {
(c->valid_until > now ?
(c->valid_until - now + wall_time) :
(INFINITE_VALID(c->valid_until) ? -1 : 0)),
- c->addr);
+ ntohl(c->addr));
- struct in_addr addr = {htonl(c->addr)};
+ struct in_addr addr = {.s_addr = c->addr};
inet_ntop(AF_INET, &addr, ipbuf, sizeof(ipbuf) - 1);
if (c->hostname) {
}
}
-
-static void apply_lease(struct interface *iface, struct dhcpv6_assignment *a, bool add)
+static void __apply_lease(struct interface *iface, struct dhcpv6_assignment *a,
+ struct odhcpd_ipaddr *addrs, ssize_t addr_len, bool add)
{
- if (a->length > 64 || a->managed_size < 0)
+ if (a->length > 64)
return;
- struct odhcpd_ipaddr *addrs = (a->managed) ? a->managed : iface->ia_addr;
- size_t addrlen = (a->managed) ? (size_t)a->managed_size : iface->ia_addr_len;
-
- for (size_t i = 0; i < addrlen; ++i) {
- struct in6_addr prefix = addrs[i].addr;
+ for (ssize_t i = 0; i < addr_len; ++i) {
+ struct in6_addr prefix = addrs[i].addr.in6;
prefix.s6_addr32[1] |= htonl(a->assigned);
prefix.s6_addr32[2] = prefix.s6_addr32[3] = 0;
- odhcpd_setup_route(&prefix, (a->managed_size) ? addrs[i].prefix : a->length,
- iface, &a->peer.sin6_addr, 1024, add);
+ netlink_setup_route(&prefix, (a->managed_size) ? addrs[i].prefix : a->length,
+ iface->ifindex, &a->peer.sin6_addr, 1024, add);
}
}
+static void apply_lease(struct interface *iface, struct dhcpv6_assignment *a, bool add)
+{
+ struct odhcpd_ipaddr *addrs = (a->managed) ? a->managed : iface->addr6;
+ ssize_t addrlen = (a->managed) ? a->managed_size : (ssize_t)iface->addr6_len;
+
+ __apply_lease(iface, a, addrs, addrlen, add);
+}
+
/* More data was received from TCP connection */
static void managed_handle_pd_data(struct ustream *s, _unused int bytes_new)
{
}
return false;
- } else if (iface->ia_addr_len < 1)
+ } else if (iface->addr6_len < 1)
return false;
/* Try honoring the hint first */
return false;
}
-void dhcpv6_ia_preupdate(struct interface *iface)
+static void handle_addrlist_change(struct netevent_handler_info *info)
{
- if (iface->dhcpv6 != RELAYD_SERVER)
- return;
-
- struct dhcpv6_assignment *c, *border = list_last_entry(
+ struct interface *iface = info->iface;
+ struct dhcpv6_assignment *c, *d, *border = list_last_entry(
&iface->ia_assignments, struct dhcpv6_assignment, head);
+ time_t now = odhcpd_time();
+ int minprefix = -1;
list_for_each_entry(c, &iface->ia_assignments, head)
- if (c != border && !iface->managed && (c->flags & OAF_BOUND))
- apply_lease(iface, c, false);
-}
-
-void dhcpv6_ia_postupdate(struct interface *iface, time_t now)
-{
- if (iface->dhcpv6 != RELAYD_SERVER)
- return;
-
- int minprefix = -1;
- for (size_t i = 0; i < iface->ia_addr_len; ++i) {
- if (iface->ia_addr[i].preferred > (uint32_t)now &&
- iface->ia_addr[i].prefix < 64 &&
- iface->ia_addr[i].prefix > minprefix)
- minprefix = iface->ia_addr[i].prefix;
+ if (c != border && iface->ra_managed == RA_MANAGED_NO_MFLAG
+ && (c->flags & OAF_BOUND))
+ __apply_lease(iface, c, info->addrs_old.addrs,
+ info->addrs_old.len, false);
+
+ for (size_t i = 0; i < iface->addr6_len; ++i) {
+ if (iface->addr6[i].preferred > (uint32_t)now &&
+ iface->addr6[i].prefix < 64 &&
+ iface->addr6[i].prefix > minprefix)
+ minprefix = iface->addr6[i].prefix;
}
- struct dhcpv6_assignment *border = list_last_entry(
- &iface->ia_assignments, struct dhcpv6_assignment, head);
-
if (minprefix > 32 && minprefix <= 64)
border->assigned = 1U << (64 - minprefix);
else
border->assigned = 0;
struct list_head reassign = LIST_HEAD_INIT(reassign);
- struct dhcpv6_assignment *c, *d;
list_for_each_entry_safe(c, d, &iface->ia_assignments, head) {
if (c->clid_len == 0 || (!INFINITE_VALID(c->valid_until) && c->valid_until < now) ||
c->managed_size)
apply_lease(iface, c, true);
if (c->accept_reconf && c->reconf_cnt == 0) {
- c->reconf_cnt = 1;
- c->reconf_sent = now;
- send_reconf(iface, c);
+ start_reconf(c);
/* Leave all other assignments of that client alone */
struct dhcpv6_assignment *a;
list_for_each_entry(a, &iface->ia_assignments, head)
if (a != c && a->clid_len == c->clid_len &&
!memcmp(a->clid_data, c->clid_data, a->clid_len))
- c->reconf_cnt = INT_MAX;
+ a->reconf_cnt = INT_MAX;
}
}
dhcpv6_write_statefile();
}
-static void reconf_timer(struct uloop_timeout *event)
+static void reconf_timeout_cb(struct uloop_timeout *event)
+{
+ struct dhcpv6_assignment *a = container_of(event, struct dhcpv6_assignment, reconf_timer);
+
+ if (a->reconf_cnt > 0 && a->reconf_cnt < DHCPV6_REC_MAX_RC) {
+ send_reconf(a);
+ uloop_timeout_set(&a->reconf_timer,
+ DHCPV6_REC_TIMEOUT << a->reconf_cnt);
+ a->reconf_cnt++;
+ } else
+ stop_reconf(a);
+}
+
+static void start_reconf(struct dhcpv6_assignment *a)
+{
+ uloop_timeout_set(&a->reconf_timer,
+ DHCPV6_REC_TIMEOUT << a->reconf_cnt);
+ a->reconf_timer.cb = reconf_timeout_cb;
+ a->reconf_cnt++;
+
+ send_reconf(a);
+}
+
+static void stop_reconf(struct dhcpv6_assignment *a)
+{
+ uloop_timeout_cancel(&a->reconf_timer);
+ a->reconf_cnt = 0;
+ a->reconf_timer.cb = NULL;
+}
+
+static void valid_until_cb(struct uloop_timeout *event)
{
time_t now = odhcpd_time();
struct interface *iface;
list_for_each_entry(iface, &interfaces, head) {
- if (iface->dhcpv6 != RELAYD_SERVER || iface->ia_assignments.next == NULL)
+ if (iface->dhcpv6 != MODE_SERVER || iface->ia_assignments.next == NULL)
continue;
struct dhcpv6_assignment *a, *n;
(a->length == 128 && a->clid_len == 0))
free_dhcpv6_assignment(a);
- } else if (a->reconf_cnt > 0 && a->reconf_cnt < 8 &&
- now > a->reconf_sent + (1 << a->reconf_cnt)) {
- ++a->reconf_cnt;
- a->reconf_sent = now;
- send_reconf(iface, a);
}
}
}
- uloop_timeout_set(event, 2000);
+ uloop_timeout_set(event, 1000);
}
static size_t append_reply(uint8_t *buf, size_t buflen, uint16_t status,
uint32_t pref = leasetime;
uint32_t valid = leasetime;
- struct odhcpd_ipaddr *addrs = (a->managed) ? a->managed : iface->ia_addr;
- size_t addrlen = (a->managed) ? (size_t)a->managed_size : iface->ia_addr_len;
+ struct odhcpd_ipaddr *addrs = (a->managed) ? a->managed : iface->addr6;
+ size_t addrlen = (a->managed) ? (size_t)a->managed_size : iface->addr6_len;
size_t m = get_preferred_addr(addrs, addrlen);
for (size_t i = 0; i < addrlen; ++i) {
.preferred = htonl(prefix_pref),
.valid = htonl(prefix_valid),
.prefix = (a->managed_size) ? addrs[i].prefix : a->length,
- .addr = addrs[i].addr
+ .addr = addrs[i].addr.in6,
};
p.addr.s6_addr32[1] |= htonl(a->assigned);
p.addr.s6_addr32[2] = p.addr.s6_addr32[3] = 0;
struct dhcpv6_ia_addr n = {
.type = htons(DHCPV6_OPT_IA_ADDR),
.len = htons(sizeof(n) - 4),
- .addr = addrs[i].addr,
+ .addr = addrs[i].addr.in6,
.preferred = htonl(prefix_pref),
.valid = htonl(prefix_valid)
};
bool found = false;
if (a) {
- struct odhcpd_ipaddr *addrs = (a->managed) ? a->managed : iface->ia_addr;
- size_t addrlen = (a->managed) ? (size_t)a->managed_size : iface->ia_addr_len;
+ struct odhcpd_ipaddr *addrs = (a->managed) ? a->managed : iface->addr6;
+ size_t addrlen = (a->managed) ? (size_t)a->managed_size : iface->addr6_len;
for (size_t i = 0; i < addrlen; ++i) {
if (!valid_addr(&addrs[i], now))
continue;
- struct in6_addr addr = addrs[i].addr;
+ struct in6_addr addr = addrs[i].addr.in6;
if (ia->type == htons(DHCPV6_OPT_IA_PD)) {
addr.s6_addr32[1] |= htonl(a->assigned);
addr.s6_addr32[2] = addr.s6_addr32[3] = 0;
a->clid_len = clid_len;
a->iaid = ia->iaid;
a->peer = *addr;
- a->reconf_cnt = 0;
- a->reconf_sent = 0;
+ stop_reconf(a);
break;
}
}
/* Set valid time to current time indicating */
/* assignment is not having infinite lifetime */
a->valid_until = now;
+ a->iface = iface;
if (first)
memcpy(a->key, first->key, sizeof(a->key));
}
}
- if (!assigned || iface->ia_addr_len == 0)
+ if (!assigned || iface->addr6_len == 0)
/* Set error status */
status = (is_pd) ? DHCPV6_STATUS_NOPREFIXAVAIL : DHCPV6_STATUS_NOADDRSAVAIL;
else if (assigned && !first && hdr->msg_type != DHCPV6_MSG_REBIND) {
projects / project / odhcpd.git / blobdiff