// L2TPNS Clustering Stuff
-char const *cvs_id_cluster = "$Id: cluster.c,v 1.48 2005-12-05 12:47:12 bodea Exp $";
-
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
in_addr_t my_address = 0; // The network address of my ethernet port.
static int walk_session_number = 0; // The next session to send when doing the slow table walk.
+static int walk_bundle_number = 0; // The next bundle to send when doing the slow table walk.
static int walk_tunnel_number = 0; // The next tunnel to send when doing the slow table walk.
int forked = 0; // Sanity check: CLI must not diddle with heartbeat table
int opt;
config->cluster_undefined_sessions = MAXSESSION-1;
+ config->cluster_undefined_bundles = MAXBUNDLE-1;
config->cluster_undefined_tunnels = MAXTUNNEL-1;
if (!config->cluster_address)
if (config->cluster_iam_uptodate)
return;
- if (config->cluster_undefined_sessions || config->cluster_undefined_tunnels)
+ if (config->cluster_undefined_sessions || config->cluster_undefined_tunnels || config->cluster_undefined_bundles)
return;
config->cluster_iam_uptodate = 1;
x.ver = 1;
x.addr = config->bind_address;
- x.undef = config->cluster_undefined_sessions + config->cluster_undefined_tunnels;
+ x.undef = config->cluster_undefined_sessions + config->cluster_undefined_tunnels + config->cluster_undefined_bundles;
x.basetime = basetime;
add_type(&p, C_PING, basetime, (uint8_t *) &x, sizeof(x));
if (!config->cluster_master_address) // If we don't have a master, skip it for a while.
return;
- // C_BYTES format changed in 2.1.0 (cluster version 5)
- // during upgrade from previous versions, hang onto our counters
- // for a bit until the new master comes up
- if (config->cluster_last_hb_ver < 5)
- return;
-
i = MAX_B_RECS * 5; // Examine max 3000 sessions;
if (config->cluster_highest_sessionid > i)
i = config->cluster_highest_sessionid;
//
void cluster_check_master(void)
{
- int i, count, tcount, high_unique_id = 0;
+ int i, count, high_unique_id = 0;
int last_free = 0;
clockt t = TIME;
static int probed = 0;
// Count the highest used tunnel number as well.
//
config->cluster_highest_tunnelid = 0;
- for (i = 0, tcount = 0; i < MAXTUNNEL; ++i) {
+ for (i = 0; i < MAXTUNNEL; ++i) {
if (tunnel[i].state == TUNNELUNDEF)
tunnel[i].state = TUNNELFREE;
config->cluster_highest_tunnelid = i;
}
+ //
+ // Go through and mark all the bundles as defined.
+ // Count the highest used bundle number as well.
+ //
+ config->cluster_highest_bundleid = 0;
+ for (i = 0; i < MAXBUNDLE; ++i) {
+ if (bundle[i].state == BUNDLEUNDEF)
+ bundle[i].state = BUNDLEFREE;
+
+ if (bundle[i].state != BUNDLEFREE && i > config->cluster_highest_bundleid)
+ config->cluster_highest_bundleid = i;
+ }
+
//
// Go through and mark all the sessions as being defined.
// reset the idle timeouts.
}
// Reset idle timeouts..
- session[i].last_packet = time_now;
+ session[i].last_packet = session[i].last_data = time_now;
// Reset die relative to our uptime rather than the old master's
if (session[i].die) session[i].die = TIME;
rebuild_address_pool();
// If we're not the very first master, this is a big issue!
- if(count>0)
+ if (count > 0)
LOG(0, 0, 0, "Warning: Fixed %d uninitialized sessions in becoming master!\n", count);
config->cluster_undefined_sessions = 0;
+ config->cluster_undefined_bundles = 0;
config->cluster_undefined_tunnels = 0;
config->cluster_iam_uptodate = 1; // assume all peers are up-to-date
// we fix it up here, and we ensure that the 'first free session'
// pointer is valid.
//
-static void cluster_check_sessions(int highsession, int freesession_ptr, int hightunnel)
+static void cluster_check_sessions(int highsession, int freesession_ptr, int highbundle, int hightunnel)
{
int i;
if (config->cluster_iam_uptodate)
return;
- if (highsession > config->cluster_undefined_sessions && hightunnel > config->cluster_undefined_tunnels)
+ if (highsession > config->cluster_undefined_sessions && highbundle > config->cluster_undefined_bundles && hightunnel > config->cluster_undefined_tunnels)
return;
// Clear out defined sessions, counting the number of
++config->cluster_undefined_sessions;
}
+ // Clear out defined bundles, counting the number of
+ // undefs remaining.
+ config->cluster_undefined_bundles = 0;
+ for (i = 1 ; i < MAXBUNDLE; ++i) {
+ if (i > highbundle) {
+ if (bundle[i].state == BUNDLEUNDEF) bundle[i].state = BUNDLEFREE; // Defined.
+ continue;
+ }
+
+ if (bundle[i].state == BUNDLEUNDEF)
+ ++config->cluster_undefined_bundles;
+ }
+
// Clear out defined tunnels, counting the number of
// undefs remaining.
config->cluster_undefined_tunnels = 0;
}
- if (config->cluster_undefined_sessions || config->cluster_undefined_tunnels) {
- LOG(2, 0, 0, "Cleared undefined sessions/tunnels. %d sess (high %d), %d tunn (high %d)\n",
- config->cluster_undefined_sessions, highsession, config->cluster_undefined_tunnels, hightunnel);
+ if (config->cluster_undefined_sessions || config->cluster_undefined_tunnels || config->cluster_undefined_bundles) {
+ LOG(2, 0, 0, "Cleared undefined sessions/bundles/tunnels. %d sess (high %d), %d bund (high %d), %d tunn (high %d)\n",
+ config->cluster_undefined_sessions, highsession, config->cluster_undefined_bundles, highbundle, config->cluster_undefined_tunnels, hightunnel);
return;
}
add_type(p, C_SESSION, id, (uint8_t *) &session[id], sizeof(sessiont));
break;
+ case C_CBUNDLE: { // Compressed C_BUNDLE
+ uint8_t c[sizeof(bundlet) * 2]; // Bigger than worst case.
+ uint8_t *d = (uint8_t *) &bundle[id];
+ uint8_t *orig = d;
+ int size;
+
+ size = rle_compress( &d, sizeof(bundlet), c, sizeof(c) );
+
+ // Did we compress the full structure, and is the size actually
+ // reduced??
+ if ( (d - orig) == sizeof(bundlet) && size < sizeof(bundlet) ) {
+ add_type(p, C_CBUNDLE, id, c, size);
+ break;
+ }
+ // Failed to compress : Fall through.
+ }
+
+ case C_BUNDLE:
+ add_type(p, C_BUNDLE, id, (uint8_t *) &bundle[id], sizeof(bundlet));
+ break;
+
case C_CTUNNEL: { // Compressed C_TUNNEL
uint8_t c[sizeof(tunnelt) * 2]; // Bigger than worst case.
uint8_t *d = (uint8_t *) &tunnel[id];
//
void cluster_heartbeat()
{
- int i, count = 0, tcount = 0;
+ int i, count = 0, tcount = 0, bcount = 0;
uint8_t buff[MAX_HEART_SIZE + sizeof(heartt) + sizeof(int) ];
heartt h;
uint8_t *p = buff;
h.highsession = config->cluster_highest_sessionid;
h.freesession = sessionfree;
h.hightunnel = config->cluster_highest_tunnelid;
+ h.highbundle = config->cluster_highest_bundleid;
h.size_sess = sizeof(sessiont); // Just in case.
+ h.size_bund = sizeof(bundlet);
h.size_tunn = sizeof(tunnelt);
h.interval = config->cluster_hb_interval;
h.timeout = config->cluster_hb_timeout;
++tcount;
}
+ //
+ // Fill out the packet with bundles from the bundle table...
+ while ( (p + sizeof(uint32_t) * 2 + sizeof(bundlet) ) < (buff + MAX_HEART_SIZE) ) {
+
+ if (!walk_bundle_number) // bundle #0 isn't valid.
+ ++walk_bundle_number;
+
+ if (bcount >= config->cluster_highest_bundleid)
+ break;
+
+ hb_add_type(&p, C_CBUNDLE, walk_bundle_number);
+ walk_bundle_number = (1+walk_bundle_number)%(config->cluster_highest_bundleid+1); // +1 avoids divide by zero.
+ ++bcount;
+ }
+
//
// Did we do something wrong?
if (p > (buff + sizeof(buff))) { // Did we somehow manage to overun the buffer?
}
LOG(3, 0, 0, "Sending v%d heartbeat #%d, change #%" PRIu64 " with %d changes "
- "(%d x-sess, %d x-tunnels, %d highsess, %d hightun, size %d)\n",
+ "(%d x-sess, %d x-bundles, %d x-tunnels, %d highsess, %d highbund, %d hightun, size %d)\n",
HB_VERSION, h.seq, h.table_version, config->cluster_num_changes,
- count, tcount, config->cluster_highest_sessionid,
+ count, bcount, tcount, config->cluster_highest_sessionid, config->cluster_highest_bundleid,
config->cluster_highest_tunnelid, (int) (p - buff));
config->cluster_num_changes = 0;
return type_changed(C_CSESSION, sid);
}
+// A particular bundle has been changed!
+int cluster_send_bundle(int bid)
+{
+ if (!config->cluster_iam_master) {
+ LOG(0, 0, bid, "I'm not a master, but I just tried to change a bundle!\n");
+ return -1;
+ }
+
+ return type_changed(C_CBUNDLE, bid);
+}
+
// A particular tunnel has been changed!
int cluster_send_tunnel(int tid)
{
session[b->sid].cout_delta += b->cout;
if (b->cin)
- session[b->sid].last_packet = time_now; // Reset idle timer!
+ session[b->sid].last_packet = session[b->sid].last_data = time_now;
+ else if (b->cout)
+ session[b->sid].last_data = time_now;
size -= sizeof(*b);
++b;
return 0;
}
+static int cluster_recv_bundle(int more, uint8_t *p)
+{
+ if (more >= MAXBUNDLE) {
+ LOG(0, 0, 0, "DANGER: Received a bundle id > MAXBUNDLE!\n");
+ return -1;
+ }
+
+ if (bundle[more].state == BUNDLEUNDEF) {
+ if (config->cluster_iam_uptodate) { // Sanity.
+ LOG(0, 0, 0, "I thought I was uptodate but I just found an undefined bundle!\n");
+ } else {
+ --config->cluster_undefined_bundles;
+ }
+ }
+
+ memcpy(&bundle[more], p, sizeof(bundle[more]) );
+
+ LOG(5, 0, more, "Received bundle update\n");
+
+ if (!config->cluster_iam_uptodate)
+ cluster_uptodate(); // Check to see if we're up to date.
+
+ return 0;
+}
+
static int cluster_recv_tunnel(int more, uint8_t *p)
{
if (more >= MAXTUNNEL) {
}
-// pre v5 heartbeat session structure
+// pre v6 heartbeat session structure
struct oldsession {
sessionidt next;
sessionidt far;
tunnelidt tunnel;
+ uint8_t flags;
+ struct {
+ uint8_t phase;
+ uint8_t lcp:4;
+ uint8_t ipcp:4;
+ uint8_t ipv6cp:4;
+ uint8_t ccp:4;
+ } ppp;
+ char reserved_1[2];
in_addr_t ip;
int ip_pool_index;
- unsigned long unique_id;
- uint16_t nr;
- uint16_t ns;
+ uint32_t unique_id;
+ char reserved_2[4];
uint32_t magic;
- uint32_t cin, cout;
uint32_t pin, pout;
- uint32_t total_cin;
- uint32_t total_cout;
- uint32_t id;
+ uint32_t cin, cout;
+ uint32_t cin_wrap, cout_wrap;
+ uint32_t cin_delta, cout_delta;
uint16_t throttle_in;
uint16_t throttle_out;
+ uint8_t filter_in;
+ uint8_t filter_out;
+ uint16_t mru;
clockt opened;
clockt die;
+ uint32_t session_timeout;
+ uint32_t idle_timeout;
time_t last_packet;
+ time_t last_data;
in_addr_t dns1, dns2;
routet route[MAXROUTE];
- uint16_t radius;
- uint16_t mru;
uint16_t tbf_in;
uint16_t tbf_out;
- uint8_t l2tp_flags;
- uint8_t reserved_old_snoop;
- uint8_t walled_garden;
- uint8_t flags1;
- char random_vector[MAXTEL];
int random_vector_length;
- char user[129];
+ uint8_t random_vector[MAXTEL];
+ char user[MAXUSER];
char called[MAXTEL];
char calling[MAXTEL];
uint32_t tx_connect_speed;
uint32_t rx_connect_speed;
- uint32_t flags;
-#define SF_IPCP_ACKED 1 // Has this session seen an IPCP Ack?
-#define SF_LCP_ACKED 2 // LCP negotiated
-#define SF_CCP_ACKED 4 // CCP negotiated
+ clockt timeout;
+ uint32_t mrru;
+ uint8_t mssf;
+ epdist epdis;
+ bundleidt bundle;
in_addr_t snoop_ip;
uint16_t snoop_port;
- uint16_t sid;
- uint8_t filter_in;
- uint8_t filter_out;
- char reserved[18];
+ uint8_t walled_garden;
+ uint8_t ipv6prefixlen;
+ struct in6_addr ipv6route;
+ char reserved_3[11];
};
static uint8_t *convert_session(struct oldsession *old)
new.next = old->next;
new.far = old->far;
new.tunnel = old->tunnel;
- new.flags = old->l2tp_flags;
+ new.flags = old->flags;
+ new.ppp.phase = old->ppp.phase;
+ new.ppp.lcp = old->ppp.lcp;
+ new.ppp.ipcp = old->ppp.ipcp;
+ new.ppp.ipv6cp = old->ppp.ipv6cp;
+ new.ppp.ccp = old->ppp.ccp;
new.ip = old->ip;
new.ip_pool_index = old->ip_pool_index;
new.unique_id = old->unique_id;
- new.nr = old->nr;
- new.ns = old->ns;
new.magic = old->magic;
new.pin = old->pin;
new.pout = old->pout;
- new.cin = old->total_cin;
- new.cout = old->total_cout;
- new.cin_delta = old->cin;
- new.cout_delta = old->cout;
+ new.cin = old->cin;
+ new.cout = old->cout;
+ new.cin_wrap = old->cin_wrap;
+ new.cout_wrap = old->cout_wrap;
+ new.cin_delta = old->cin_delta;
+ new.cout_delta = old->cout_delta;
new.throttle_in = old->throttle_in;
new.throttle_out = old->throttle_out;
new.filter_in = old->filter_in;
new.mru = old->mru;
new.opened = old->opened;
new.die = old->die;
+ new.session_timeout = old->session_timeout;
+ new.idle_timeout = old->idle_timeout;
new.last_packet = old->last_packet;
+ new.last_data = old->last_data;
new.dns1 = old->dns1;
new.dns2 = old->dns2;
new.tbf_in = old->tbf_in;
new.random_vector_length = old->random_vector_length;
new.tx_connect_speed = old->tx_connect_speed;
new.rx_connect_speed = old->rx_connect_speed;
+ new.timeout = old->timeout;
+ new.mrru = old->mrru;
+ new.mssf = old->mssf;
+ new.epdis = old->epdis;
+ new.bundle = old->bundle;
new.snoop_ip = old->snoop_ip;
new.snoop_port = old->snoop_port;
new.walled_garden = old->walled_garden;
+ new.ipv6prefixlen = old->ipv6prefixlen;
+ new.ipv6route = old->ipv6route;
memcpy(new.random_vector, old->random_vector, sizeof(new.random_vector));
memcpy(new.user, old->user, sizeof(new.user));
for (i = 0; i < MAXROUTE; i++)
memcpy(&new.route[i], &old->route[i], sizeof(new.route[i]));
- if (new.opened)
- {
- new.ppp.phase = Establish;
- if (old->flags & (SF_IPCP_ACKED|SF_LCP_ACKED))
- {
- new.ppp.phase = Network;
- new.ppp.lcp = Opened;
- new.ppp.ipcp = (old->flags & SF_IPCP_ACKED) ? Opened : Starting;
- new.ppp.ccp = (old->flags & SF_CCP_ACKED) ? Opened : Stopped;
- }
-
- // no PPPv6 in old session
- new.ppp.ipv6cp = Stopped;
- }
-
return (uint8_t *) &new;
}
//
// Process a heartbeat..
//
-// v3: added interval, timeout
-// v4: added table_version
-// v5: added ipv6, re-ordered session structure
+// v6: added RADIUS class attribute, re-ordered session structure
static int cluster_process_heartbeat(uint8_t *data, int size, int more, uint8_t *p, in_addr_t addr)
{
heartt *h;
int i, type;
int hb_ver = more;
-#if HB_VERSION != 5
+#if HB_VERSION != 6
# error "need to update cluster_process_heartbeat()"
#endif
- // we handle versions 3 through 5
- if (hb_ver < 3 || hb_ver > HB_VERSION) {
+ // we handle versions 5 through 6
+ if (hb_ver < 5 || hb_ver > HB_VERSION) {
LOG(0, 0, 0, "Received a heartbeat version that I don't support (%d)!\n", hb_ver);
return -1; // Ignore it??
}
- // Ok. It's a heartbeat packet from a cluster master!
+ if (size > sizeof(past_hearts[0].data)) {
+ LOG(0, 0, 0, "Received an oversize heartbeat from %s (%d)!\n", fmtaddr(addr, 0), size);
+ return -1;
+ }
+
if (s < sizeof(*h))
goto shortpacket;
return -1; // Skip it.
}
- if (hb_ver >= 4) {
- if (h->table_version > config->cluster_table_version) {
- LOG(0, 0, 0, "They've seen more state changes (%" PRIu64 " vs my %" PRIu64 ") so I'm gone!\n",
+ if (h->table_version > config->cluster_table_version) {
+ LOG(0, 0, 0, "They've seen more state changes (%" PRIu64 " vs my %" PRIu64 ") so I'm gone!\n",
h->table_version, config->cluster_table_version);
- kill(0, SIGTERM);
- exit(1);
- }
- if (h->table_version < config->cluster_table_version)
- return -1;
+ kill(0, SIGTERM);
+ exit(1);
}
+ if (h->table_version < config->cluster_table_version)
+ return -1;
+
if (basetime > h->basetime) {
LOG(0, 0, 0, "They're an older master than me so I'm gone!\n");
kill(0, SIGTERM);
// Check that we don't have too many undefined sessions, and
// that the free session pointer is correct.
- cluster_check_sessions(h->highsession, h->freesession, h->hightunnel);
+ cluster_check_sessions(h->highsession, h->freesession, h->highbundle, h->hightunnel);
if (h->interval != config->cluster_hb_interval)
{
s -= (p - orig_p);
// session struct changed with v5
- if (hb_ver < 5)
+ if (hb_ver < 6)
{
if (size != sizeof(struct oldsession)) {
LOG(0, 0, 0, "DANGER: Received a v%d CSESSION that didn't decompress correctly!\n", hb_ver);
break;
}
case C_SESSION:
- if (hb_ver < 5)
+ if (hb_ver < 6)
{
if (s < sizeof(struct oldsession))
goto shortpacket;
p += sizeof(tunnel[more]);
s -= sizeof(tunnel[more]);
break;
+
+ case C_CBUNDLE: { // Compressed bundle structure.
+ uint8_t c[ sizeof(bundlet) + 2];
+ int size;
+ uint8_t *orig_p = p;
+
+ size = rle_decompress((uint8_t **) &p, s, c, sizeof(c));
+ s -= (p - orig_p);
+
+ if (size != sizeof(bundlet) ) { // Ouch! Very very bad!
+ LOG(0, 0, 0, "DANGER: Received a CBUNDLE that didn't decompress correctly!\n");
+ // Now what? Should exit! No-longer up to date!
+ break;
+ }
+
+ cluster_recv_bundle(more, c);
+ break;
+
+ }
+ case C_BUNDLE:
+ if ( s < sizeof(bundle[more]))
+ goto shortpacket;
+
+ cluster_recv_bundle(more, p);
+
+ p += sizeof(bundle[more]);
+ s -= sizeof(bundle[more]);
+ break;
default:
LOG(0, 0, 0, "DANGER: I received a heartbeat element where I didn't understand the type! (%d)\n", type);
return -1; // can't process any more of the packet!!
case C_FORWARD_DAE: // Forwarded DAE packet. pass off to processdae.
if (!config->cluster_iam_master)
{
- LOG(0, 0, 0, "I'm not the master, but I got a C_FORWARD_%s from %s?\n",
+ LOG(0, 0, 0, "I'm not the master, but I got a C_FORWARD%s from %s?\n",
type == C_FORWARD_DAE ? "_DAE" : "", fmtaddr(addr, 0));
return -1;
STAT(recv_forward);
if (type == C_FORWARD_DAE)
- processdae(p, s, &a, sizeof(a));
+ {
+ struct in_addr local;
+ local.s_addr = config->bind_address ? config->bind_address : my_address;
+ processdae(p, s, &a, sizeof(a), &local);
+ }
else
processudp(p, s, &a);
cli_print(cli, "Table version # : %" PRIu64, config->cluster_table_version);
cli_print(cli, "Next sequence number expected: %d", config->cluster_seq_number);
cli_print(cli, "%d sessions undefined of %d", config->cluster_undefined_sessions, config->cluster_highest_sessionid);
+ cli_print(cli, "%d bundles undefined of %d", config->cluster_undefined_bundles, config->cluster_highest_bundleid);
cli_print(cli, "%d tunnels undefined of %d", config->cluster_undefined_tunnels, config->cluster_highest_tunnelid);
} else {
cli_print(cli, "Table version # : %" PRIu64, config->cluster_table_version);
cli_print(cli, "Next heartbeat # : %d", config->cluster_seq_number);
cli_print(cli, "Highest session : %d", config->cluster_highest_sessionid);
+ cli_print(cli, "Highest bundle : %d", config->cluster_highest_bundleid);
cli_print(cli, "Highest tunnel : %d", config->cluster_highest_tunnelid);
cli_print(cli, "%d changes queued for sending", config->cluster_num_changes);
}
projects / l2tpns.git / blobdiff