#ifdef KERNEL
#include "rx_kmutex.h"
#include "rx_kernel.h"
-#include "rx_clock.h"
-#include "rx_event.h"
-#include "rx_queue.h"
-#include "rx_packet.h"
-#include "rx_misc.h"
-#include "rx_multi.h"
#if defined (AFS_OBSD_ENV) && !defined (MLEN)
#include "sys/mbuf.h"
#endif
#include <ws2tcpip.h>
#endif
# include "rx_user.h"
-# include "rx_clock.h"
-# include "rx_event.h"
-# include "rx_packet.h"
-# include "rx_misc.h"
-# include "rx_null.h"
-# include "rx_multi.h"
#ifndef AFS_NT40_ENV
# include <netinet/in.h>
# include <sys/socket.h>
#endif
#endif /* KERNEL */
+#include "rx_clock.h"
+#include "rx_event.h"
+#include "rx_packet.h"
+#include "rx_misc.h"
+#include "rx_null.h"
+#include "rx_multi.h"
/* Configurable parameters */
#define RX_IDLE_DEAD_TIME 60 /* default idle dead time */
/* This parameter should not normally be changed */
#define RX_PROCESS_PRIORITY LWP_NORMAL_PRIORITY
-/* backoff is fixed point binary. Ie, units of 1/4 seconds */
-#define MAXBACKOFF 0x1F
-
#define ADDRSPERSITE 16
#ifndef KDUMP_RX_LOCK
afs_uint32 callNumber[RX_MAXCALLS]; /* Current call numbers */
afs_uint32 rwind[RX_MAXCALLS];
u_short twind[RX_MAXCALLS];
+ afs_uint32 lastBusy[RX_MAXCALLS]; /* timestamp of the last time we got an
+ * RX_PACKET_TYPE_BUSY packet for this
+ * call slot, or 0 if the slot is not busy */
afs_uint32 serial; /* Next outgoing packet serial number */
afs_uint32 lastSerial; /* # of last packet received, for computing skew */
- afs_int32 maxSerial; /* largest serial number seen on incoming packets */
afs_int32 lastPacketSize; /* last >max attempt */
afs_int32 lastPacketSizeSeq; /* seq number of attempt */
afs_int32 lastPingSize; /* last MTU ping attempt */
struct rx_queue congestionQueue; /* Calls that are waiting for non-zero burst value */
int rtt; /* Smoothed round trip time, measured in milliseconds/8 */
int rtt_dev; /* Smoothed rtt mean difference, in milliseconds/4 */
- struct clock timeout; /* Current retransmission delay */
- int backedOff; /* Has the timeout been backed off due to a missing packet? */
int nSent; /* Total number of distinct data packets sent, not including retransmissions */
int reSends; /* Total number of retransmissions for this peer, since this structure was created */
#define RX_CONN_BUSY 32 /* connection is busy; don't delete */
#define RX_CONN_ATTACHWAIT 64 /* attach waiting for peer->lastReach */
#define RX_CONN_MAKECALL_ACTIVE 128 /* a thread is actively in rx_NewCall */
+#define RX_CONN_NAT_PING 256 /* nat ping requested */
/* Type of connection, client or server */
#define RX_CLIENT_CONNECTION 0
#define RX_SERVER_CONNECTION 1
#endif /* !KDUMP_RX_LOCK */
+/* Maximum number of acknowledgements in an acknowledge packet */
+#define RX_MAXACKS 255
+
/* Call structure: only instantiated for active calls and dallying server calls. The permanent call state (i.e. the call number as well as state shared with other calls associated with this connection) is maintained in the connection structure. */
#ifdef KDUMP_RX_LOCK
struct rx_call_rx_lock {
afs_uint32 rwind; /* The receive window: the peer must not send packets with sequence numbers >= rnext+rwind */
afs_uint32 tfirst; /* First unacknowledged transmit packet number */
afs_uint32 tnext; /* Next transmit sequence number to use */
+ afs_uint32 tprev; /* Last packet that we saw an ack for */
u_short twind; /* The transmit window: we cannot assign a sequence number to a packet >= tfirst + twind */
u_short cwind; /* The congestion window */
u_short nSoftAcked; /* Number soft acked transmit packets */
u_short nSoftAcks; /* The number of delayed soft acks */
u_short nHardAcks; /* The number of delayed hard acks */
u_short congestSeq; /* Peer's congestion sequence counter */
+ int rtt;
+ int rtt_dev;
+ struct clock rto; /* The round trip timeout calculated for this call */
struct rxevent *resendEvent; /* If this is non-Null, there is a retransmission event pending */
struct rxevent *timeoutEvent; /* If this is non-Null, then there is an overall timeout for this call */
struct rxevent *keepAliveEvent; /* Scheduled periodically in active calls to keep call alive */
afs_hyper_t bytesRcvd; /* Number bytes received */
u_short tqWaiters;
+ struct rx_packet *xmitList[RX_MAXACKS]; /* Can't xmit more than we ack */
+ /* Protected by setting RX_CALL_TQ_BUSY */
#ifdef ADAPT_WINDOW
struct clock pingRequestTime;
#endif
#define RX_CALL_TQ_SOME_ACKED 512 /* rxi_Start needs to discard ack'd packets. */
#define RX_CALL_TQ_WAIT 1024 /* Reader is waiting for TQ_BUSY to be reset */
#define RX_CALL_FAST_RECOVER 2048 /* call is doing congestion recovery */
-#define RX_CALL_FAST_RECOVER_WAIT 4096 /* thread is waiting to start recovery */
+/* 4096 was RX_CALL_FAST_RECOVER_WAIT */
#define RX_CALL_SLOW_START_OK 8192 /* receiver acks every other packet */
#define RX_CALL_IOVEC_WAIT 16384 /* waiting thread is using an iovec */
#define RX_CALL_HAVE_LAST 32768 /* Last packet has been received */
#define RX_CALL_NEED_START 0x10000 /* tells rxi_Start to start again */
+#define RX_CALL_PEER_BUSY 0x20000 /* the last packet we received on this call was a
+ * BUSY packet; i.e. the channel for this call is busy */
+#define RX_CALL_ACKALL_SENT 0x40000 /* ACKALL has been sent on the call */
-/* Maximum number of acknowledgements in an acknowledge packet */
-#define RX_MAXACKS 255
/* The structure of the data portion of an acknowledge packet: An acknowledge
* packet is in network byte order at all times. An acknowledgement is always
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