# include "h/socket.h"
# endif
# include "netinet/in.h"
-# ifdef AFS_SUN58_ENV
+# ifdef AFS_SUN5_ENV
# include "netinet/ip6.h"
-# endif
-# ifdef AFS_SUN57_ENV
# include "inet/common.h"
# include "inet/ip.h"
# include "inet/ip_ire.h"
struct clock *);
static void rxi_Resend(struct rxevent *event, void *arg0, void *arg1,
int istack);
+static void rxi_SendDelayedAck(struct rxevent *event, void *call,
+ void *dummy);
#ifdef RX_ENABLE_LOCKS
static void rxi_SetAcksInTransmitQueue(struct rx_call *call);
extern afs_kmutex_t listener_mutex;
extern afs_kmutex_t rx_if_init_mutex;
extern afs_kmutex_t rx_if_mutex;
-extern afs_kmutex_t rxkad_client_uid_mutex;
-extern afs_kmutex_t rxkad_random_mutex;
extern afs_kcondvar_t rx_event_handler_cond;
extern afs_kcondvar_t rx_listener_cond;
MUTEX_INIT(&listener_mutex, "listener", MUTEX_DEFAULT, 0);
MUTEX_INIT(&rx_if_init_mutex, "if init", MUTEX_DEFAULT, 0);
MUTEX_INIT(&rx_if_mutex, "if", MUTEX_DEFAULT, 0);
- MUTEX_INIT(&rxkad_client_uid_mutex, "uid", MUTEX_DEFAULT, 0);
- MUTEX_INIT(&rxkad_random_mutex, "rxkad random", MUTEX_DEFAULT, 0);
MUTEX_INIT(&rx_debug_mutex, "debug", MUTEX_DEFAULT, 0);
CV_INIT(&rx_event_handler_cond, "evhand", CV_DEFAULT, 0);
osi_Assert(pthread_key_create(&rx_thread_id_key, NULL) == 0);
osi_Assert(pthread_key_create(&rx_ts_info_key, NULL) == 0);
- rxkad_global_stats_init();
-
MUTEX_INIT(&rx_rpc_stats, "rx_rpc_stats", MUTEX_DEFAULT, 0);
MUTEX_INIT(&rx_freePktQ_lock, "rx_freePktQ_lock", MUTEX_DEFAULT, 0);
#ifdef RX_ENABLE_LOCKS
rxi_busyChannelError = error;
}
+/**
+ * Set a delayed ack event on the specified call for the given time
+ *
+ * @param[in] call - the call on which to set the event
+ * @param[in] offset - the delay from now after which the event fires
+ */
+void
+rxi_PostDelayedAckEvent(struct rx_call *call, struct clock *offset)
+{
+ struct clock now, when;
+
+ clock_GetTime(&now);
+ when = now;
+ clock_Add(&when, offset);
+
+ if (!call->delayedAckEvent
+ || clock_Gt(&call->delayedAckEvent->eventTime, &when)) {
+
+ rxevent_Cancel(call->delayedAckEvent, call,
+ RX_CALL_REFCOUNT_DELAY);
+ MUTEX_ENTER(&rx_refcnt_mutex);
+ CALL_HOLD(call, RX_CALL_REFCOUNT_DELAY);
+ MUTEX_EXIT(&rx_refcnt_mutex);
+
+ call->delayedAckEvent = rxevent_PostNow(&when, &now,
+ rxi_SendDelayedAck,
+ call, 0);
+ }
+}
+
+
+
/* called with unincremented nRequestsRunning to see if it is OK to start
* a new thread in this service. Could be "no" for two reasons: over the
* max quota, or would prevent others from reaching their min quota.
MUTEX_EXIT(&conn->conn_data_lock);
/* Check for extant references to this connection */
+ MUTEX_ENTER(&conn->conn_call_lock);
for (i = 0; i < RX_MAXCALLS; i++) {
struct rx_call *call = conn->call[i];
if (call) {
}
}
}
+ MUTEX_EXIT(&conn->conn_call_lock);
+
#ifdef RX_ENABLE_LOCKS
if (!havecalls) {
if (MUTEX_TRYENTER(&conn->conn_data_lock)) {
}
}
+#ifdef KERNEL
+ if (afs_termState == AFSOP_STOP_RXCALLBACK) {
+#ifdef RX_ENABLE_LOCKS
+ AFS_GLOCK();
+#endif /* RX_ENABLE_LOCKS */
+ afs_termState = AFSOP_STOP_AFS;
+ afs_osi_Wakeup(&afs_termState);
+#ifdef RX_ENABLE_LOCKS
+ AFS_GUNLOCK();
+#endif /* RX_ENABLE_LOCKS */
+ return;
+ }
+#endif
+
/* if server is restarting( typically smooth shutdown) then do not
* allow any new calls.
*/
MUTEX_EXIT(&call->lock);
USERPRI;
+ continue;
}
-#ifdef KERNEL
- if (afs_termState == AFSOP_STOP_RXCALLBACK) {
-#ifdef RX_ENABLE_LOCKS
- AFS_GLOCK();
-#endif /* RX_ENABLE_LOCKS */
- afs_termState = AFSOP_STOP_AFS;
- afs_osi_Wakeup(&afs_termState);
-#ifdef RX_ENABLE_LOCKS
- AFS_GUNLOCK();
-#endif /* RX_ENABLE_LOCKS */
- return;
- }
-#endif
tservice = call->conn->service;
(*tservice->afterProc) (call, code);
rx_EndCall(call, code);
+
+ if (tservice->postProc)
+ (*tservice->postProc) (code);
+
if (rx_stats_active) {
MUTEX_ENTER(&rx_stats_mutex);
rxi_nCalls++;
call->state = RX_STATE_RESET;
MUTEX_EXIT(&rx_refcnt_mutex);
rxi_ResetCall(call, 0);
- call->conn->call[channel] = (struct rx_call *)0;
+
+ MUTEX_ENTER(&conn->conn_call_lock);
+ if (call->conn->call[channel] == call)
+ call->conn->call[channel] = 0;
+ MUTEX_EXIT(&conn->conn_call_lock);
MUTEX_ENTER(&rx_freeCallQueue_lock);
SET_CALL_QUEUE_LOCK(call, &rx_freeCallQueue_lock);
channel = np->header.cid & RX_CHANNELMASK;
call = conn->call[channel];
-#ifdef RX_ENABLE_LOCKS
- if (call)
- MUTEX_ENTER(&call->lock);
- /* Test to see if call struct is still attached to conn. */
- if (call != conn->call[channel]) {
- if (call)
- MUTEX_EXIT(&call->lock);
- if (type == RX_SERVER_CONNECTION) {
- call = conn->call[channel];
- /* If we started with no call attached and there is one now,
- * another thread is also running this routine and has gotten
- * the connection channel. We should drop this packet in the tests
- * below. If there was a call on this connection and it's now
- * gone, then we'll be making a new call below.
- * If there was previously a call and it's now different then
- * the old call was freed and another thread running this routine
- * has created a call on this channel. One of these two threads
- * has a packet for the old call and the code below handles those
- * cases.
- */
- if (call)
- MUTEX_ENTER(&call->lock);
- } else {
- /* This packet can't be for this call. If the new call address is
- * 0 then no call is running on this channel. If there is a call
- * then, since this is a client connection we're getting data for
- * it must be for the previous call.
- */
- if (rx_stats_active)
- rx_atomic_inc(&rx_stats.spuriousPacketsRead);
- MUTEX_ENTER(&rx_refcnt_mutex);
- conn->refCount--;
- MUTEX_EXIT(&rx_refcnt_mutex);
- return np;
- }
- }
-#endif
- currentCallNumber = conn->callNumber[channel];
- if (type == RX_SERVER_CONNECTION) { /* We're the server */
- if (np->header.callNumber < currentCallNumber) {
- if (rx_stats_active)
- rx_atomic_inc(&rx_stats.spuriousPacketsRead);
-#ifdef RX_ENABLE_LOCKS
- if (call)
- MUTEX_EXIT(&call->lock);
-#endif
- MUTEX_ENTER(&rx_refcnt_mutex);
- conn->refCount--;
- MUTEX_EXIT(&rx_refcnt_mutex);
- return np;
- }
- if (!call) {
- MUTEX_ENTER(&conn->conn_call_lock);
- call = rxi_NewCall(conn, channel);
- MUTEX_EXIT(&conn->conn_call_lock);
- *call->callNumber = np->header.callNumber;
+ if (call) {
+ MUTEX_ENTER(&call->lock);
+ currentCallNumber = conn->callNumber[channel];
+ } else if (type == RX_SERVER_CONNECTION) { /* No call allocated */
+ MUTEX_ENTER(&conn->conn_call_lock);
+ call = conn->call[channel];
+ if (call) {
+ MUTEX_ENTER(&call->lock);
+ MUTEX_EXIT(&conn->conn_call_lock);
+ currentCallNumber = conn->callNumber[channel];
+ } else {
+ call = rxi_NewCall(conn, channel); /* returns locked call */
+ MUTEX_EXIT(&conn->conn_call_lock);
+ *call->callNumber = currentCallNumber = np->header.callNumber;
#ifdef RXDEBUG
- if (np->header.callNumber == 0)
- dpf(("RecPacket call 0 %d %s: %x.%u.%u.%u.%u.%u.%u flags %d, packet %"AFS_PTR_FMT" len %d\n",
- np->header.serial, rx_packetTypes[np->header.type - 1], ntohl(conn->peer->host), ntohs(conn->peer->port),
- np->header.serial, np->header.epoch, np->header.cid, np->header.callNumber, np->header.seq,
- np->header.flags, np, np->length));
+ if (np->header.callNumber == 0)
+ dpf(("RecPacket call 0 %d %s: %x.%u.%u.%u.%u.%u.%u flags %d, packet %"AFS_PTR_FMT" len %d\n",
+ np->header.serial, rx_packetTypes[np->header.type - 1], ntohl(conn->peer->host), ntohs(conn->peer->port),
+ np->header.serial, np->header.epoch, np->header.cid, np->header.callNumber, np->header.seq,
+ np->header.flags, np, np->length));
#endif
- call->state = RX_STATE_PRECALL;
- clock_GetTime(&call->queueTime);
- hzero(call->bytesSent);
- hzero(call->bytesRcvd);
- /*
- * If the number of queued calls exceeds the overload
- * threshold then abort this call.
- */
- if ((rx_BusyThreshold > 0) &&
- (rx_atomic_read(&rx_nWaiting) > rx_BusyThreshold)) {
- struct rx_packet *tp;
-
- rxi_CallError(call, rx_BusyError);
- tp = rxi_SendCallAbort(call, np, 1, 0);
- MUTEX_EXIT(&call->lock);
+ call->state = RX_STATE_PRECALL;
+ clock_GetTime(&call->queueTime);
+ hzero(call->bytesSent);
+ hzero(call->bytesRcvd);
+ /*
+ * If the number of queued calls exceeds the overload
+ * threshold then abort this call.
+ */
+ if ((rx_BusyThreshold > 0) &&
+ (rx_atomic_read(&rx_nWaiting) > rx_BusyThreshold)) {
+ struct rx_packet *tp;
+
+ rxi_CallError(call, rx_BusyError);
+ tp = rxi_SendCallAbort(call, np, 1, 0);
+ MUTEX_EXIT(&call->lock);
MUTEX_ENTER(&rx_refcnt_mutex);
- conn->refCount--;
+ conn->refCount--;
MUTEX_EXIT(&rx_refcnt_mutex);
if (rx_stats_active)
rx_atomic_inc(&rx_stats.nBusies);
- return tp;
- }
- rxi_KeepAliveOn(call);
- } else if (np->header.callNumber != currentCallNumber) {
+ return tp;
+ }
+ rxi_KeepAliveOn(call);
+ }
+ } else { /* RX_CLIENT_CONNECTION and No call allocated */
+ /* This packet can't be for this call. If the new call address is
+ * 0 then no call is running on this channel. If there is a call
+ * then, since this is a client connection we're getting data for
+ * it must be for the previous call.
+ */
+ if (rx_stats_active)
+ rx_atomic_inc(&rx_stats.spuriousPacketsRead);
+ MUTEX_ENTER(&rx_refcnt_mutex);
+ conn->refCount--;
+ MUTEX_EXIT(&rx_refcnt_mutex);
+ return np;
+ }
+
+ /* There is a non-NULL locked call at this point */
+ if (type == RX_SERVER_CONNECTION) { /* We're the server */
+ if (np->header.callNumber < currentCallNumber) {
+ MUTEX_EXIT(&call->lock);
+ if (rx_stats_active)
+ rx_atomic_inc(&rx_stats.spuriousPacketsRead);
+ MUTEX_ENTER(&rx_refcnt_mutex);
+ conn->refCount--;
+ MUTEX_EXIT(&rx_refcnt_mutex);
+ return np;
+ } else if (np->header.callNumber != currentCallNumber) {
/* Wait until the transmit queue is idle before deciding
* whether to reset the current call. Chances are that the
* call will be in ether DALLY or HOLD state once the TQ_BUSY
}
} else { /* we're the client */
/* Ignore all incoming acknowledgements for calls in DALLY state */
- if (call && (call->state == RX_STATE_DALLY)
+ if ((call->state == RX_STATE_DALLY)
&& (np->header.type == RX_PACKET_TYPE_ACK)) {
if (rx_stats_active)
rx_atomic_inc(&rx_stats.ignorePacketDally);
-#ifdef RX_ENABLE_LOCKS
- if (call) {
- MUTEX_EXIT(&call->lock);
- }
-#endif
+ MUTEX_EXIT(&call->lock);
MUTEX_ENTER(&rx_refcnt_mutex);
conn->refCount--;
MUTEX_EXIT(&rx_refcnt_mutex);
/* Ignore anything that's not relevant to the current call. If there
* isn't a current call, then no packet is relevant. */
- if (!call || (np->header.callNumber != currentCallNumber)) {
+ if (np->header.callNumber != currentCallNumber) {
if (rx_stats_active)
rx_atomic_inc(&rx_stats.spuriousPacketsRead);
-#ifdef RX_ENABLE_LOCKS
- if (call) {
- MUTEX_EXIT(&call->lock);
- }
-#endif
+ MUTEX_EXIT(&call->lock);
MUTEX_ENTER(&rx_refcnt_mutex);
conn->refCount--;
MUTEX_EXIT(&rx_refcnt_mutex);
/* If the service security object index stamped in the packet does not
* match the connection's security index, ignore the packet */
if (np->header.securityIndex != conn->securityIndex) {
-#ifdef RX_ENABLE_LOCKS
MUTEX_EXIT(&call->lock);
-#endif
MUTEX_ENTER(&rx_refcnt_mutex);
conn->refCount--;
MUTEX_EXIT(&rx_refcnt_mutex);
}
#endif /* KERNEL */
+/*!
+ * Clear the attach wait flag on a connection and proceed.
+ *
+ * Any processing waiting for a connection to be attached should be
+ * unblocked. We clear the flag and do any other needed tasks.
+ *
+ * @param[in] conn
+ * the conn to unmark waiting for attach
+ *
+ * @pre conn's conn_data_lock must be locked before calling this function
+ *
+ */
+static void
+rxi_ConnClearAttachWait(struct rx_connection *conn)
+{
+ /* Indicate that rxi_CheckReachEvent is no longer running by
+ * clearing the flag. Must be atomic under conn_data_lock to
+ * avoid a new call slipping by: rxi_CheckConnReach holds
+ * conn_data_lock while checking RX_CONN_ATTACHWAIT.
+ */
+ conn->flags &= ~RX_CONN_ATTACHWAIT;
+ if (conn->flags & RX_CONN_NAT_PING) {
+ conn->flags &= ~RX_CONN_NAT_PING;
+ rxi_ScheduleNatKeepAliveEvent(conn);
+ }
+}
+
static void
rxi_CheckReachEvent(struct rxevent *event, void *arg1, void *arg2)
{
}
}
if (!call)
- /* Indicate that rxi_CheckReachEvent is no longer running by
- * clearing the flag. Must be atomic under conn_data_lock to
- * avoid a new call slipping by: rxi_CheckConnReach holds
- * conn_data_lock while checking RX_CONN_ATTACHWAIT.
- */
- conn->flags &= ~RX_CONN_ATTACHWAIT;
+ rxi_ConnClearAttachWait(conn);
MUTEX_EXIT(&conn->conn_data_lock);
MUTEX_EXIT(&conn->conn_call_lock);
}
afs_uint32 serial=0, flags=0;
int isFirst;
struct rx_packet *tnp;
- struct clock when, now;
if (rx_stats_active)
rx_atomic_inc(&rx_stats.dataPacketsRead);
call->rprev = np->header.serial;
rxi_calltrace(RX_TRACE_DROP, call);
dpf(("packet %"AFS_PTR_FMT" dropped on receipt - quota problems\n", np));
- if (rxi_doreclaim)
- rxi_ClearReceiveQueue(call);
- clock_GetTime(&now);
- when = now;
- clock_Add(&when, &rx_softAckDelay);
- if (!call->delayedAckEvent
- || clock_Gt(&call->delayedAckEvent->eventTime, &when)) {
- rxevent_Cancel(call->delayedAckEvent, call,
- RX_CALL_REFCOUNT_DELAY);
- MUTEX_ENTER(&rx_refcnt_mutex);
- CALL_HOLD(call, RX_CALL_REFCOUNT_DELAY);
- MUTEX_EXIT(&rx_refcnt_mutex);
+ /* We used to clear the receive queue here, in an attempt to free
+ * packets. However this is unsafe if the queue has received a
+ * soft ACK for the final packet */
+ rxi_PostDelayedAckEvent(call, &rx_softAckDelay);
- call->delayedAckEvent =
- rxevent_PostNow(&when, &now, rxi_SendDelayedAck, call, 0);
- }
/* we've damaged this call already, might as well do it in. */
return np;
}
rxevent_Cancel(call->delayedAckEvent, call, RX_CALL_REFCOUNT_DELAY);
np = rxi_SendAck(call, np, serial, RX_ACK_IDLE, istack);
} else if (call->nSoftAcks) {
- clock_GetTime(&now);
- when = now;
- if (haveLast && !(flags & RX_CLIENT_INITIATED)) {
- clock_Add(&when, &rx_lastAckDelay);
- } else {
- clock_Add(&when, &rx_softAckDelay);
- }
- if (!call->delayedAckEvent
- || clock_Gt(&call->delayedAckEvent->eventTime, &when)) {
- rxevent_Cancel(call->delayedAckEvent, call,
- RX_CALL_REFCOUNT_DELAY);
- MUTEX_ENTER(&rx_refcnt_mutex);
- CALL_HOLD(call, RX_CALL_REFCOUNT_DELAY);
- MUTEX_EXIT(&rx_refcnt_mutex);
- call->delayedAckEvent =
- rxevent_PostNow(&when, &now, rxi_SendDelayedAck, call, 0);
- }
+ if (haveLast && !(flags & RX_CLIENT_INITIATED))
+ rxi_PostDelayedAckEvent(call, &rx_lastAckDelay);
+ else
+ rxi_PostDelayedAckEvent(call, &rx_softAckDelay);
} else if (call->flags & RX_CALL_RECEIVE_DONE) {
rxevent_Cancel(call->delayedAckEvent, call, RX_CALL_REFCOUNT_DELAY);
}
return np;
}
-#ifdef ADAPT_WINDOW
-static void rxi_ComputeRate();
-#endif
-
static void
rxi_UpdatePeerReach(struct rx_connection *conn, struct rx_call *acall)
{
if (conn->flags & RX_CONN_ATTACHWAIT) {
int i;
- conn->flags &= ~RX_CONN_ATTACHWAIT;
+ rxi_ConnClearAttachWait(conn);
MUTEX_EXIT(&conn->conn_data_lock);
for (i = 0; i < RX_MAXCALLS; i++) {
rxi_ComputeRoundTripTime(tp, ap, call, peer, &now);
}
-#ifdef ADAPT_WINDOW
- rxi_ComputeRate(call->conn->peer, call, p, np, ap->reason);
-#endif
-
#ifdef AFS_GLOBAL_RXLOCK_KERNEL
/* XXX Hack. Because we have to release the global rx lock when sending
* packets (osi_NetSend) we drop all acks while we're traversing the tq
tp = next;
}
-#ifdef ADAPT_WINDOW
- /* Give rate detector a chance to respond to ping requests */
- if (ap->reason == RX_ACK_PING_RESPONSE) {
- rxi_ComputeRate(peer, call, 0, np, ap->reason);
- }
-#endif
-
/* N.B. we don't turn off any timers here. They'll go away by themselves, anyway */
/* Second section of the queue - packets for which we are receiving
newAckCount++;
tp->flags |= RX_PKTFLAG_ACKED;
rxi_ComputeRoundTripTime(tp, ap, call, peer, &now);
-#ifdef ADAPT_WINDOW
- rxi_ComputeRate(call->conn->peer, call, tp, np, ap->reason);
-#endif
}
if (missing) {
nNacked++;
if (conn->checkReachEvent) {
rxevent_Cancel(conn->checkReachEvent, (struct rx_call *)0, 0);
conn->checkReachEvent = 0;
- conn->flags &= ~RX_CONN_ATTACHWAIT;
+ conn->flags &= ~(RX_CONN_ATTACHWAIT|RX_CONN_NAT_PING);
MUTEX_ENTER(&rx_refcnt_mutex);
conn->refCount--;
MUTEX_EXIT(&rx_refcnt_mutex);
* nFree are not reset, since these fields are manipulated by
* unprotected macros, and may only be reset by non-interrupting code.
*/
-#ifdef ADAPT_WINDOW
-/* this code requires that call->conn be set properly as a pre-condition. */
-#endif /* ADAPT_WINDOW */
void
rxi_ResetCall(struct rx_call *call, int newcall)
struct rx_packet *rqp;
struct rx_packet *nxp; /* For queue_Scan */
struct rx_packet *p;
- u_char offset;
+ u_char offset = 0;
afs_int32 templ;
afs_uint32 padbytes = 0;
#ifdef RX_ENABLE_TSFPQ
if ((call->flags & RX_CALL_ACKALL_SENT) &&
!queue_IsEmpty(&call->rq)) {
ap->firstPacket = htonl(queue_Last(&call->rq, rx_packet)->header.seq + 1);
- } else
+ } else {
ap->firstPacket = htonl(call->rnext);
- ap->previousPacket = htonl(call->rprev); /* Previous packet received */
+ ap->previousPacket = htonl(call->rprev); /* Previous packet received */
- /* No fear of running out of ack packet here because there can only be at most
- * one window full of unacknowledged packets. The window size must be constrained
- * to be less than the maximum ack size, of course. Also, an ack should always
- * fit into a single packet -- it should not ever be fragmented. */
- for (offset = 0, queue_Scan(&call->rq, rqp, nxp, rx_packet)) {
- if (!rqp || !call->rq.next
- || (rqp->header.seq > (call->rnext + call->rwind))) {
+ /* No fear of running out of ack packet here because there can only be at most
+ * one window full of unacknowledged packets. The window size must be constrained
+ * to be less than the maximum ack size, of course. Also, an ack should always
+ * fit into a single packet -- it should not ever be fragmented. */
+ for (offset = 0, queue_Scan(&call->rq, rqp, nxp, rx_packet)) {
+ if (!rqp || !call->rq.next
+ || (rqp->header.seq > (call->rnext + call->rwind))) {
#ifndef RX_ENABLE_TSFPQ
- if (!optionalPacket)
- rxi_FreePacket(p);
+ if (!optionalPacket)
+ rxi_FreePacket(p);
#endif
- rxi_CallError(call, RX_CALL_DEAD);
- return optionalPacket;
- }
+ rxi_CallError(call, RX_CALL_DEAD);
+ return optionalPacket;
+ }
- while (rqp->header.seq > call->rnext + offset)
- ap->acks[offset++] = RX_ACK_TYPE_NACK;
- ap->acks[offset++] = RX_ACK_TYPE_ACK;
+ while (rqp->header.seq > call->rnext + offset)
+ ap->acks[offset++] = RX_ACK_TYPE_NACK;
+ ap->acks[offset++] = RX_ACK_TYPE_ACK;
- if ((offset > (u_char) rx_maxReceiveWindow) || (offset > call->rwind)) {
+ if ((offset > (u_char) rx_maxReceiveWindow) || (offset > call->rwind)) {
#ifndef RX_ENABLE_TSFPQ
- if (!optionalPacket)
- rxi_FreePacket(p);
+ if (!optionalPacket)
+ rxi_FreePacket(p);
#endif
- rxi_CallError(call, RX_CALL_DEAD);
- return optionalPacket;
+ rxi_CallError(call, RX_CALL_DEAD);
+ return optionalPacket;
+ }
}
}
p->header.flags = RX_SLOW_START_OK;
if (reason == RX_ACK_PING) {
p->header.flags |= RX_REQUEST_ACK;
-#ifdef ADAPT_WINDOW
- clock_GetTime(&call->pingRequestTime);
-#endif
if (padbytes) {
p->length = padbytes +
rx_AckDataSize(call->rwind) + 4 * sizeof(afs_int32);
if (now > (call->lastReceiveTime + deadTime)) {
if (call->state == RX_STATE_ACTIVE) {
#ifdef ADAPT_PMTU
-#if defined(KERNEL) && defined(AFS_SUN57_ENV)
+#if defined(KERNEL) && defined(AFS_SUN5_ENV)
ire_t *ire;
#if defined(AFS_SUN510_ENV) && defined(GLOBAL_NETSTACKID)
netstack_t *ns = netstack_find_by_stackid(GLOBAL_NETSTACKID);
{
MUTEX_ENTER(&conn->conn_data_lock);
conn->secondsUntilNatPing = seconds;
- if (seconds != 0)
- rxi_ScheduleNatKeepAliveEvent(conn);
+ if (seconds != 0) {
+ if (!(conn->flags & RX_CONN_ATTACHWAIT))
+ rxi_ScheduleNatKeepAliveEvent(conn);
+ else
+ conn->flags |= RX_CONN_NAT_PING;
+ }
MUTEX_EXIT(&conn->conn_data_lock);
}
rxi_NatKeepAliveOn(struct rx_connection *conn)
{
MUTEX_ENTER(&conn->conn_data_lock);
- rxi_ScheduleNatKeepAliveEvent(conn);
+ /* if it's already attached */
+ if (!(conn->flags & RX_CONN_ATTACHWAIT))
+ rxi_ScheduleNatKeepAliveEvent(conn);
+ else
+ conn->flags |= RX_CONN_NAT_PING;
MUTEX_EXIT(&conn->conn_data_lock);
}
return RXS_Close(aobj);
}
-#ifdef ADAPT_WINDOW
-#define RXRATE_PKT_OH (RX_HEADER_SIZE + RX_IPUDP_SIZE)
-#define RXRATE_SMALL_PKT (RXRATE_PKT_OH + sizeof(struct rx_ackPacket))
-#define RXRATE_AVG_SMALL_PKT (RXRATE_PKT_OH + (sizeof(struct rx_ackPacket)/2))
-#define RXRATE_LARGE_PKT (RXRATE_SMALL_PKT + 256)
-
-/* Adjust our estimate of the transmission rate to this peer, given
- * that the packet p was just acked. We can adjust peer->timeout and
- * call->twind. Pragmatically, this is called
- * only with packets of maximal length.
- * Called with peer and call locked.
- */
-
-static void
-rxi_ComputeRate(struct rx_peer *peer, struct rx_call *call,
- struct rx_packet *p, struct rx_packet *ackp, u_char ackReason)
-{
- afs_int32 xferSize, xferMs;
- afs_int32 minTime;
- struct clock newTO;
-
- /* Count down packets */
- if (peer->rateFlag > 0)
- peer->rateFlag--;
- /* Do nothing until we're enabled */
- if (peer->rateFlag != 0)
- return;
- if (!call->conn)
- return;
-
- /* Count only when the ack seems legitimate */
- switch (ackReason) {
- case RX_ACK_REQUESTED:
- xferSize =
- p->length + RX_HEADER_SIZE + call->conn->securityMaxTrailerSize;
- xferMs = call->rtt;
- break;
-
- case RX_ACK_PING_RESPONSE:
- if (p) /* want the response to ping-request, not data send */
- return;
- clock_GetTime(&newTO);
- if (clock_Gt(&newTO, &call->pingRequestTime)) {
- clock_Sub(&newTO, &call->pingRequestTime);
- xferMs = (newTO.sec * 1000) + (newTO.usec / 1000);
- } else {
- return;
- }
- xferSize = rx_AckDataSize(rx_maxSendWindow) + RX_HEADER_SIZE;
- break;
-
- default:
- return;
- }
-
- dpf(("CONG peer %lx/%u: sample (%s) size %ld, %ld ms (to %d.%06d, rtt %u, ps %u)\n",
- ntohl(peer->host), ntohs(peer->port), (ackReason == RX_ACK_REQUESTED ? "dataack" : "pingack"),
- xferSize, xferMs, peer->timeout.sec, peer->timeout.usec, peer->smRtt, peer->ifMTU));
-
- /* Track only packets that are big enough. */
- if ((p->length + RX_HEADER_SIZE + call->conn->securityMaxTrailerSize) <
- peer->ifMTU)
- return;
-
- /* absorb RTT data (in milliseconds) for these big packets */
- if (peer->smRtt == 0) {
- peer->smRtt = xferMs;
- } else {
- peer->smRtt = ((peer->smRtt * 15) + xferMs + 4) >> 4;
- if (!peer->smRtt)
- peer->smRtt = 1;
- }
-
- if (peer->countDown) {
- peer->countDown--;
- return;
- }
- peer->countDown = 10; /* recalculate only every so often */
-
- /* In practice, we can measure only the RTT for full packets,
- * because of the way Rx acks the data that it receives. (If it's
- * smaller than a full packet, it often gets implicitly acked
- * either by the call response (from a server) or by the next call
- * (from a client), and either case confuses transmission times
- * with processing times.) Therefore, replace the above
- * more-sophisticated processing with a simpler version, where the
- * smoothed RTT is kept for full-size packets, and the time to
- * transmit a windowful of full-size packets is simply RTT *
- * windowSize. Again, we take two steps:
- - ensure the timeout is large enough for a single packet's RTT;
- - ensure that the window is small enough to fit in the desired timeout.*/
-
- /* First, the timeout check. */
- minTime = peer->smRtt;
- /* Get a reasonable estimate for a timeout period */
- minTime += minTime;
- newTO.sec = minTime / 1000;
- newTO.usec = (minTime - (newTO.sec * 1000)) * 1000;
-
- /* Increase the timeout period so that we can always do at least
- * one packet exchange */
- if (clock_Gt(&newTO, &peer->timeout)) {
-
- dpf(("CONG peer %lx/%u: timeout %d.%06d ==> %ld.%06d (rtt %u)\n",
- ntohl(peer->host), ntohs(peer->port), peer->timeout.sec, peer->timeout.usec,
- newTO.sec, newTO.usec, peer->smRtt));
-
- peer->timeout = newTO;
- }
-
- /* Now, get an estimate for the transmit window size. */
- minTime = peer->timeout.sec * 1000 + (peer->timeout.usec / 1000);
- /* Now, convert to the number of full packets that could fit in a
- * reasonable fraction of that interval */
- minTime /= (peer->smRtt << 1);
- minTime = MAX(minTime, rx_minPeerTimeout);
- xferSize = minTime; /* (make a copy) */
-
- /* Now clamp the size to reasonable bounds. */
- if (minTime <= 1)
- minTime = 1;
- else if (minTime > rx_maxSendWindow)
- minTime = rx_maxSendWindow;
-/* if (minTime != peer->maxWindow) {
- dpf(("CONG peer %lx/%u: windowsize %lu ==> %lu (to %lu.%06lu, rtt %u)\n",
- ntohl(peer->host), ntohs(peer->port), peer->maxWindow, minTime,
- peer->timeout.sec, peer->timeout.usec, peer->smRtt));
- peer->maxWindow = minTime;
- elide... call->twind = minTime;
- }
-*/
-
- /* Cut back on the peer timeout if it had earlier grown unreasonably.
- * Discern this by calculating the timeout necessary for rx_Window
- * packets. */
- if ((xferSize > rx_maxSendWindow) && (peer->timeout.sec >= 3)) {
- /* calculate estimate for transmission interval in milliseconds */
- minTime = rx_maxSendWindow * peer->smRtt;
- if (minTime < 1000) {
- dpf(("CONG peer %lx/%u: cut TO %d.%06d by 0.5 (rtt %u)\n",
- ntohl(peer->host), ntohs(peer->port), peer->timeout.sec,
- peer->timeout.usec, peer->smRtt));
-
- newTO.sec = 0; /* cut back on timeout by half a second */
- newTO.usec = 500000;
- clock_Sub(&peer->timeout, &newTO);
- }
- }
-
- return;
-} /* end of rxi_ComputeRate */
-#endif /* ADAPT_WINDOW */
-
-
void
rxi_DebugInit(void)
{
peer->reSends = ntohl(peer->reSends);
peer->inPacketSkew = ntohl(peer->inPacketSkew);
peer->outPacketSkew = ntohl(peer->outPacketSkew);
- peer->rateFlag = ntohl(peer->rateFlag);
peer->natMTU = ntohs(peer->natMTU);
peer->maxMTU = ntohs(peer->maxMTU);
peer->maxDgramPackets = ntohs(peer->maxDgramPackets);
peerStats->reSends = tp->reSends;
peerStats->inPacketSkew = tp->inPacketSkew;
peerStats->outPacketSkew = tp->outPacketSkew;
- peerStats->rateFlag = tp->rateFlag;
peerStats->natMTU = tp->natMTU;
peerStats->maxMTU = tp->maxMTU;
peerStats->maxDgramPackets = tp->maxDgramPackets;
git://git.openafs.org / openafs.git / blobdiff