n->mtuprobes = 1;
n->minmtu = 0;
n->maxmtu = MTU;
+
+ update_node_pmtu(mesh, n);
}
if(n->mtuprobes >= 10 && n->mtuprobes < 32 && !n->minmtu) {
if(n->mtuprobes == 30 || (n->mtuprobes < 30 && n->minmtu >= n->maxmtu)) {
if(n->minmtu > n->maxmtu) {
n->minmtu = n->maxmtu;
+ update_node_pmtu(mesh, n);
} else {
n->maxmtu = n->minmtu;
}
} else if(n->maxmtu <= n->minmtu) {
len = n->maxmtu;
} else {
- len = n->minmtu + 1 + rand() % (n->maxmtu - n->minmtu);
+ len = n->minmtu + 1 + prng(mesh, n->maxmtu - n->minmtu);
}
if(len < 64) {
end:
timeout_set(&mesh->loop, &n->mtutimeout, &(struct timeval) {
- timeout, rand() % 100000
+ timeout, prng(mesh, TIMER_FUDGE)
});
}
}
static void mtu_probe_h(meshlink_handle_t *mesh, node_t *n, vpn_packet_t *packet, uint16_t len) {
+ if(len < 64) {
+ logger(mesh, MESHLINK_WARNING, "Got too short MTU probe length %d from %s", packet->len, n->name);
+ return;
+ }
+
logger(mesh, MESHLINK_DEBUG, "Got MTU probe length %d from %s", packet->len, n->name);
if(!packet->data[0]) {
if(n->minmtu < len) {
n->minmtu = len;
+ update_node_pmtu(mesh, n);
}
}
}
So we pick a random edge and a random socket. */
int i = 0;
- int j = rand() % n->edge_tree->count;
+ int j = prng(mesh, n->edge_tree->count);
edge_t *candidate = NULL;
for splay_each(edge_t, e, n->edge_tree) {
if(candidate) {
*sa = &candidate->address;
- *sock = rand() % mesh->listen_sockets;
+ *sock = prng(mesh, mesh->listen_sockets);
}
/* Make sure we have a suitable socket for the chosen address */
}
static void choose_broadcast_address(meshlink_handle_t *mesh, const node_t *n, const sockaddr_t **sa, int *sock) {
- static sockaddr_t broadcast_ipv4 = {
- .in = {
- .sin_family = AF_INET,
- .sin_addr.s_addr = -1,
- }
- };
-
- static sockaddr_t broadcast_ipv6 = {
- .in6 = {
- .sin6_family = AF_INET6,
- .sin6_addr.s6_addr[0x0] = 0xff,
- .sin6_addr.s6_addr[0x1] = 0x02,
- .sin6_addr.s6_addr[0xf] = 0x01,
- }
- };
-
- *sock = rand() % mesh->listen_sockets;
+ *sock = prng(mesh, mesh->listen_sockets);
+ sockaddr_t *broadcast_sa = &mesh->listen_socket[*sock].broadcast_sa;
- if(mesh->listen_socket[*sock].sa.sa.sa_family == AF_INET6) {
- broadcast_ipv6.in6.sin6_port = n->prevedge->address.in.sin_port;
- broadcast_ipv6.in6.sin6_scope_id = mesh->listen_socket[*sock].sa.in6.sin6_scope_id;
- *sa = &broadcast_ipv6;
+ if(broadcast_sa->sa.sa_family == AF_INET6) {
+ broadcast_sa->in6.sin6_port = n->prevedge->address.in.sin_port;
} else {
- broadcast_ipv4.in.sin_port = n->prevedge->address.in.sin_port;
- *sa = &broadcast_ipv4;
+ broadcast_sa->in.sin_port = n->prevedge->address.in.sin_port;
}
+
+ *sa = broadcast_sa;
}
static void send_udppacket(meshlink_handle_t *mesh, node_t *n, vpn_packet_t *origpkt) {
}
bool send_sptps_data(void *handle, uint8_t type, const void *data, size_t len) {
+ assert(handle);
+ assert(data);
+ assert(len);
+
node_t *to = handle;
meshlink_handle_t *mesh = to->mesh;
}
bool receive_sptps_record(void *handle, uint8_t type, const void *data, uint16_t len) {
+ assert(handle);
+ assert(!data || len);
+
node_t *from = handle;
meshlink_handle_t *mesh = from->mesh;
return;
}
-/* Broadcast a packet using the minimum spanning tree */
-
-void broadcast_packet(meshlink_handle_t *mesh, const node_t *from, vpn_packet_t *packet) {
- // Always give ourself a copy of the packet.
- if(from != mesh->self) {
- send_packet(mesh, mesh->self, packet);
- }
-
- logger(mesh, MESHLINK_INFO, "Broadcasting packet of %d bytes from %s", packet->len, from->name);
-
- for list_each(connection_t, c, mesh->connections)
- if(c->status.active && c->status.mst && c != from->nexthop->connection) {
- send_packet(mesh, c->node, packet);
- }
-}
-
static node_t *try_harder(meshlink_handle_t *mesh, const sockaddr_t *from, const vpn_packet_t *pkt) {
node_t *n = NULL;
bool hard = false;