2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
11 * rx_kcommon.c - Common kernel RX code for all system types.
14 #include <afsconfig.h>
15 #include "afs/param.h"
20 #include "rx/rx_kcommon.h"
22 #ifdef AFS_HPUX110_ENV
28 #ifndef RXK_LISTENER_ENV
29 int (*rxk_PacketArrivalProc) (struct rx_packet * ahandle, struct sockaddr_in * afrom, struct socket *arock, afs_int32 asize); /* set to packet allocation procedure */
30 int (*rxk_GetPacketProc) (struct rx_packet **ahandle, int asize);
33 osi_socket *rxk_NewSocketHost(afs_uint32 ahost, short aport);
34 extern struct interfaceAddr afs_cb_interface;
36 rxk_ports_t rxk_ports;
37 rxk_portRocks_t rxk_portRocks;
41 #if !defined(AFS_SUN5_ENV) && !defined(AFS_SGI62_ENV)
42 #define ADDRSPERSITE 16
43 static afs_uint32 myNetAddrs[ADDRSPERSITE];
44 static int myNetMTUs[ADDRSPERSITE];
45 static int numMyNetAddrs = 0;
48 #if defined(AFS_DARWIN80_ENV)
49 #define sobind sock_bind
50 #define soclose sock_close
53 /* add a port to the monitored list, port # is in network order */
55 rxk_AddPort(u_short aport, char *arock)
58 unsigned short *tsp, ts;
61 zslot = -1; /* look for an empty slot simultaneously */
62 for (i = 0, tsp = rxk_ports; i < MAXRXPORTS; i++, tsp++) {
63 if (((ts = *tsp) == 0) && (zslot == -1))
69 /* otherwise allocate a new port slot */
71 return E2BIG; /* all full */
72 rxk_ports[zslot] = aport;
73 rxk_portRocks[zslot] = arock;
77 /* remove as port from the monitored list, port # is in network order */
79 rxk_DelPort(u_short aport)
82 register unsigned short *tsp;
84 for (i = 0, tsp = rxk_ports; i < MAXRXPORTS; i++, tsp++) {
86 /* found it, adjust ref count and free the port reference if all gone */
91 /* otherwise port not found */
96 rxk_shutdownPorts(void)
99 for (i = 0; i < MAXRXPORTS; i++) {
102 #if ! defined(AFS_SUN5_ENV) && ! defined(UKERNEL) && ! defined(RXK_LISTENER_ENV)
103 soclose((struct socket *)rxk_portRocks[i]);
105 rxk_portRocks[i] = NULL;
111 rxi_GetHostUDPSocket(u_int host, u_short port)
114 sockp = (osi_socket *)rxk_NewSocketHost(host, port);
115 if (sockp == (osi_socket *)0)
116 return OSI_NULLSOCKET;
117 rxk_AddPort(port, (char *)sockp);
118 return (osi_socket) sockp;
122 rxi_GetUDPSocket(u_short port)
124 return rxi_GetHostUDPSocket(htonl(INADDR_ANY), port);
127 #if !defined(AFS_LINUX26_ENV)
129 osi_Panic(msg, a1, a2, a3)
133 msg = "Unknown AFS panic";
135 printf(msg, a1, a2, a3);
136 #ifdef AFS_LINUX20_ENV
144 * osi_utoa() - write the NUL-terminated ASCII decimal form of the given
145 * unsigned long value into the given buffer. Returns 0 on success,
146 * and a value less than 0 on failure. The contents of the buffer is
147 * defined only on success.
151 osi_utoa(char *buf, size_t len, unsigned long val)
153 long k; /* index of first byte of string value */
155 /* we definitely need room for at least one digit and NUL */
161 /* compute the string form from the high end of the buffer */
164 for (k = len - 2; k >= 0; k--) {
165 buf[k] = val % 10 + '0';
172 /* did we finish converting val to string form? */
178 /* this should never happen */
184 /* this should never happen */
190 /* if necessary, relocate string to beginning of buf[] */
195 * We need to achieve the effect of calling
197 * memmove(buf, &buf[k], len - k);
199 * However, since memmove() is not available in all
200 * kernels, we explicitly do an appropriate copy.
206 while ((*dst++ = *src++) != '\0')
214 * osi_AssertFailK() -- used by the osi_Assert() macro.
216 * It essentially does
218 * osi_Panic("assertion failed: %s, file: %s, line: %d", expr, file, line);
220 * Since the kernel version of osi_Panic() only passes its first
221 * argument to the native panic(), we construct a single string and hand
222 * that to osi_Panic().
225 osi_AssertFailK(const char *expr, const char *file, int line)
227 static const char msg0[] = "assertion failed: ";
228 static const char msg1[] = ", file: ";
229 static const char msg2[] = ", line: ";
230 static const char msg3[] = "\n";
233 * These buffers add up to 1K, which is a pleasantly nice round
234 * value, but probably not vital.
239 /* check line number conversion */
241 if (osi_utoa(linebuf, sizeof linebuf, line) < 0) {
242 osi_Panic("osi_AssertFailK: error in osi_utoa()\n");
247 #define ADDBUF(BUF, STR) \
248 if (strlen(BUF) + strlen((char *)(STR)) + 1 <= sizeof BUF) { \
249 strcat(BUF, (char *)(STR)); \
258 ADDBUF(buf, linebuf);
267 osi_AssertFailK(const char *expr, const char *file, int line)
269 printk(KERN_CRIT "assertion failed: %s, file: %s, line: %d\n", expr, file, line);
274 /* This is the server process request loop. Kernel server
275 * processes never become listener threads */
281 rxi_MorePackets(rx_maxReceiveWindow + 2); /* alloc more packets */
282 rxi_dataQuota += rx_initSendWindow; /* Reserve some pkts for hard times */
283 /* threadID is used for making decisions in GetCall. Get it by bumping
284 * number of threads handling incoming calls */
285 threadID = rxi_availProcs++;
287 #ifdef RX_ENABLE_LOCKS
289 #endif /* RX_ENABLE_LOCKS */
290 rxi_ServerProc(threadID, NULL, NULL);
291 #ifdef RX_ENABLE_LOCKS
293 #endif /* RX_ENABLE_LOCKS */
295 #endif /* !UKERNEL */
297 #ifndef RXK_LISTENER_ENV
298 /* asize includes the Rx header */
300 MyPacketProc(struct rx_packet **ahandle, int asize)
302 struct rx_packet *tp;
304 /* If this is larger than we expected, increase rx_maxReceiveDataSize */
305 /* If we can't scrounge enough cbufs, then we have to drop the packet,
306 * but we should set a flag so we magic up some more at our leisure.
309 if ((asize >= 0) && (asize <= RX_MAX_PACKET_SIZE)) {
310 tp = rxi_AllocPacket(RX_PACKET_CLASS_RECEIVE);
311 if (tp && (tp->length + RX_HEADER_SIZE) < asize) {
313 rxi_AllocDataBuf(tp, asize - (tp->length + RX_HEADER_SIZE),
314 RX_PACKET_CLASS_RECV_CBUF)) {
317 MUTEX_ENTER(&rx_stats_mutex);
318 rx_stats.noPacketBuffersOnRead++;
319 MUTEX_EXIT(&rx_stats_mutex);
324 * XXX if packet is too long for our buffer,
325 * should do this at a higher layer and let other
326 * end know we're losing.
328 MUTEX_ENTER(&rx_stats_mutex);
329 rx_stats.bogusPacketOnRead++;
330 MUTEX_EXIT(&rx_stats_mutex);
331 /* I DON"T LIKE THIS PRINTF -- PRINTFS MAKE THINGS VERY VERY SLOOWWW */
332 dpf(("rx: packet dropped: bad ulen=%d\n", asize));
338 /* otherwise we have a packet, set appropriate values */
344 MyArrivalProc(struct rx_packet *ahandle,
345 struct sockaddr_in *afrom,
346 struct socket *arock,
349 /* handle basic rx packet */
350 ahandle->length = asize - RX_HEADER_SIZE;
351 rxi_DecodePacketHeader(ahandle);
353 rxi_ReceivePacket(ahandle, arock,
354 afrom->sin_addr.s_addr, afrom->sin_port, NULL,
357 /* free the packet if it has been returned */
359 rxi_FreePacket(ahandle);
362 #endif /* !RXK_LISTENER_ENV */
365 rxi_StartListener(void)
367 /* if kernel, give name of appropriate procedures */
368 #ifndef RXK_LISTENER_ENV
369 rxk_GetPacketProc = MyPacketProc;
370 rxk_PacketArrivalProc = MyArrivalProc;
375 /* Called from rxi_FindPeer, when initializing a clear rx_peer structure,
376 to get interesting information. */
378 rxi_InitPeerParams(register struct rx_peer *pp)
385 #ifdef AFS_USERSPACE_IP_ADDR
386 i = rxi_Findcbi(pp->host);
389 /* pp->timeout.usec = 0; */
390 pp->ifMTU = RX_REMOTE_PACKET_SIZE;
393 /* pp->timeout.usec = 0; */
394 pp->ifMTU = MIN(RX_MAX_PACKET_SIZE, rx_MyMaxSendSize);
397 mtu = ntohl(afs_cb_interface.mtu[i]);
398 /* Diminish the packet size to one based on the MTU given by
400 if (mtu > (RX_IPUDP_SIZE + RX_HEADER_SIZE)) {
401 rxmtu = mtu - RX_IPUDP_SIZE;
402 if (rxmtu < pp->ifMTU)
405 } else { /* couldn't find the interface, so assume the worst */
406 pp->ifMTU = RX_REMOTE_PACKET_SIZE;
408 #else /* AFS_USERSPACE_IP_ADDR */
411 #if !defined(AFS_SGI62_ENV)
412 if (numMyNetAddrs == 0)
413 (void)rxi_GetIFInfo();
416 ifn = rxi_FindIfnet(pp->host, NULL);
419 /* pp->timeout.usec = 0; */
420 pp->ifMTU = MIN(RX_MAX_PACKET_SIZE, rx_MyMaxSendSize);
421 #ifdef IFF_POINTOPOINT
422 if (ifnet_flags(ifn) & IFF_POINTOPOINT) {
423 /* wish we knew the bit rate and the chunk size, sigh. */
425 pp->ifMTU = RX_PP_PACKET_SIZE;
427 #endif /* IFF_POINTOPOINT */
428 /* Diminish the packet size to one based on the MTU given by
430 if (ifnet_mtu(ifn) > (RX_IPUDP_SIZE + RX_HEADER_SIZE)) {
431 rxmtu = ifnet_mtu(ifn) - RX_IPUDP_SIZE;
432 if (rxmtu < pp->ifMTU)
435 } else { /* couldn't find the interface, so assume the worst */
437 /* pp->timeout.usec = 0; */
438 pp->ifMTU = RX_REMOTE_PACKET_SIZE;
440 #endif /* else AFS_USERSPACE_IP_ADDR */
441 #else /* AFS_SUN5_ENV */
442 mtu = rxi_FindIfMTU(pp->host);
446 /* pp->timeout.usec = 0; */
447 pp->ifMTU = RX_REMOTE_PACKET_SIZE;
450 /* pp->timeout.usec = 0; */
451 pp->ifMTU = MIN(RX_MAX_PACKET_SIZE, rx_MyMaxSendSize);
455 /* Diminish the packet size to one based on the MTU given by
457 if (mtu > (RX_IPUDP_SIZE + RX_HEADER_SIZE)) {
458 rxmtu = mtu - RX_IPUDP_SIZE;
459 if (rxmtu < pp->ifMTU)
462 } else { /* couldn't find the interface, so assume the worst */
463 pp->ifMTU = RX_REMOTE_PACKET_SIZE;
465 #endif /* AFS_SUN5_ENV */
466 #else /* ADAPT_MTU */
467 pp->rateFlag = 2; /* start timing after two full packets */
469 pp->ifMTU = OLD_MAX_PACKET_SIZE;
470 #endif /* else ADAPT_MTU */
471 pp->ifMTU = rxi_AdjustIfMTU(pp->ifMTU);
472 pp->maxMTU = OLD_MAX_PACKET_SIZE; /* for compatibility with old guys */
473 pp->natMTU = MIN(pp->ifMTU, OLD_MAX_PACKET_SIZE);
475 MIN(rxi_nDgramPackets,
476 rxi_AdjustDgramPackets(RX_MAX_FRAGS, pp->ifMTU));
477 pp->maxDgramPackets = 1;
479 /* Initialize slow start parameters */
480 pp->MTU = MIN(pp->natMTU, pp->maxMTU);
482 pp->nDgramPackets = 1;
487 /* The following code is common to several system types, but not all. The
488 * separate ones are found in the system specific subdirectories.
492 #if ! defined(AFS_AIX_ENV) && ! defined(AFS_SUN5_ENV) && ! defined(UKERNEL) && ! defined(AFS_LINUX20_ENV) && !defined (AFS_DARWIN_ENV) && !defined (AFS_XBSD_ENV)
493 /* Routine called during the afsd "-shutdown" process to put things back to
496 static struct protosw parent_proto; /* udp proto switch */
499 shutdown_rxkernel(void)
501 register struct protosw *tpro, *last;
502 last = inetdomain.dom_protoswNPROTOSW;
503 for (tpro = inetdomain.dom_protosw; tpro < last; tpro++)
504 if (tpro->pr_protocol == IPPROTO_UDP) {
505 /* restore original udp protocol switch */
506 memcpy((void *)tpro, (void *)&parent_proto, sizeof(parent_proto));
507 memset((void *)&parent_proto, 0, sizeof(parent_proto));
512 dpf(("shutdown_rxkernel: no udp proto"));
514 #endif /* !AIX && !SUN && !NCR && !UKERNEL */
516 #if !defined(AFS_SUN5_ENV) && !defined(AFS_SGI62_ENV)
517 /* Determine what the network interfaces are for this machine. */
519 #ifdef AFS_USERSPACE_IP_ADDR
523 int i, j, different = 0, num = ADDRSPERSITE;
526 afs_uint32 addrs[ADDRSPERSITE];
527 int mtus[ADDRSPERSITE];
529 memset((void *)addrs, 0, sizeof(addrs));
530 memset((void *)mtus, 0, sizeof(mtus));
532 if (afs_cb_interface.numberOfInterfaces < num)
533 num = afs_cb_interface.numberOfInterfaces;
534 for (i = 0; i < num; i++) {
535 if (!afs_cb_interface.mtu[i])
536 afs_cb_interface.mtu[i] = htonl(1500);
537 rxmtu = (ntohl(afs_cb_interface.mtu[i]) - RX_IPUDP_SIZE);
538 ifinaddr = ntohl(afs_cb_interface.addr_in[i]);
539 if (myNetAddrs[i] != ifinaddr)
543 rxmtu = rxi_AdjustIfMTU(rxmtu);
545 rxmtu * rxi_nRecvFrags + ((rxi_nRecvFrags - 1) * UDP_HDR_SIZE);
546 maxmtu = rxi_AdjustMaxMTU(rxmtu, maxmtu);
547 addrs[i++] = ifinaddr;
548 if ((ifinaddr != 0x7f000001) && (maxmtu > rx_maxReceiveSize)) {
549 rx_maxReceiveSize = MIN(RX_MAX_PACKET_SIZE, maxmtu);
550 rx_maxReceiveSize = MIN(rx_maxReceiveSize, rx_maxReceiveSizeUser);
554 rx_maxJumboRecvSize =
555 RX_HEADER_SIZE + (rxi_nDgramPackets * RX_JUMBOBUFFERSIZE) +
556 ((rxi_nDgramPackets - 1) * RX_JUMBOHEADERSIZE);
557 rx_maxJumboRecvSize = MAX(rx_maxJumboRecvSize, rx_maxReceiveSize);
560 for (j = 0; j < i; j++) {
561 myNetMTUs[j] = mtus[j];
562 myNetAddrs[j] = addrs[j];
569 /* Returns the afs_cb_interface inxex which best matches address.
570 * If none is found, we return -1.
573 rxi_Findcbi(afs_uint32 addr)
576 afs_uint32 myAddr, thisAddr, netMask, subnetMask;
577 afs_int32 rvalue = -1;
580 if (numMyNetAddrs == 0)
581 (void)rxi_GetcbiInfo();
583 myAddr = ntohl(addr);
585 if (IN_CLASSA(myAddr))
586 netMask = IN_CLASSA_NET;
587 else if (IN_CLASSB(myAddr))
588 netMask = IN_CLASSB_NET;
589 else if (IN_CLASSC(myAddr))
590 netMask = IN_CLASSC_NET;
594 for (j = 0; j < afs_cb_interface.numberOfInterfaces; j++) {
595 thisAddr = ntohl(afs_cb_interface.addr_in[j]);
596 subnetMask = ntohl(afs_cb_interface.subnetmask[j]);
597 if ((myAddr & netMask) == (thisAddr & netMask)) {
598 if ((myAddr & subnetMask) == (thisAddr & subnetMask)) {
599 if (myAddr == thisAddr) {
604 if (match_value < 3) {
609 if (match_value < 2) {
620 #else /* AFS_USERSPACE_IP_ADDR */
622 #if !defined(AFS_AIX41_ENV) && !defined(AFS_DUX40_ENV) && !defined(AFS_DARWIN_ENV) && !defined(AFS_XBSD_ENV)
623 #define IFADDR2SA(f) (&((f)->ifa_addr))
624 #else /* AFS_AIX41_ENV */
625 #define IFADDR2SA(f) ((f)->ifa_addr)
634 register int rxmtu, maxmtu;
635 afs_uint32 addrs[ADDRSPERSITE];
636 int mtus[ADDRSPERSITE];
638 #if defined(AFS_DARWIN80_ENV)
644 struct sockaddr sout;
645 struct sockaddr_in *sin;
648 struct ifaddr *ifad; /* ifnet points to a if_addrlist of ifaddrs */
649 register struct ifnet *ifn;
652 memset(addrs, 0, sizeof(addrs));
653 memset(mtus, 0, sizeof(mtus));
655 #if defined(AFS_DARWIN80_ENV)
656 if (!ifnet_list_get(AF_INET, &ifn, &count)) {
657 for (m = 0; m < count; m++) {
658 if (!ifnet_get_address_list(ifn[m], &ifads)) {
659 for (j = 0; ifads[j] != NULL && cnt < ADDRSPERSITE; j++) {
660 if ((t = ifaddr_address(ifads[j], &sout, sizeof(struct sockaddr))) == 0) {
661 sin = (struct sockaddr_in *)&sout;
662 rxmtu = ifnet_mtu(ifaddr_ifnet(ifads[j])) - RX_IPUDP_SIZE;
663 ifinaddr = ntohl(sin->sin_addr.s_addr);
664 if (myNetAddrs[i] != ifinaddr) {
668 rxmtu = rxi_AdjustIfMTU(rxmtu);
670 rxmtu * rxi_nRecvFrags +
671 ((rxi_nRecvFrags - 1) * UDP_HDR_SIZE);
672 maxmtu = rxi_AdjustMaxMTU(rxmtu, maxmtu);
673 addrs[i++] = ifinaddr;
674 if ((ifinaddr != 0x7f000001) &&
675 (maxmtu > rx_maxReceiveSize)) {
677 MIN(RX_MAX_PACKET_SIZE, maxmtu);
679 MIN(rx_maxReceiveSize, rx_maxReceiveSizeUser);
684 ifnet_free_address_list(ifads);
687 ifnet_list_free(ifn);
690 #if defined(AFS_DARWIN_ENV) || defined(AFS_FBSD_ENV)
691 TAILQ_FOREACH(ifn, &ifnet, if_link) {
692 if (i >= ADDRSPERSITE)
694 #elif defined(AFS_OBSD_ENV)
695 for (ifn = ifnet.tqh_first; i < ADDRSPERSITE && ifn != NULL;
696 ifn = ifn->if_list.tqe_next) {
698 for (ifn = ifnet; ifn != NULL && i < ADDRSPERSITE; ifn = ifn->if_next) {
700 rxmtu = (ifn->if_mtu - RX_IPUDP_SIZE);
701 #if defined(AFS_DARWIN_ENV) || defined(AFS_FBSD_ENV)
702 TAILQ_FOREACH(ifad, &ifn->if_addrhead, ifa_link) {
703 if (i >= ADDRSPERSITE)
705 #elif defined(AFS_OBSD_ENV)
706 for (ifad = ifn->if_addrlist.tqh_first;
707 ifad != NULL && i < ADDRSPERSITE;
708 ifad = ifad->ifa_list.tqe_next) {
710 for (ifad = ifn->if_addrlist; ifad != NULL && i < ADDRSPERSITE;
711 ifad = ifad->ifa_next) {
713 if (IFADDR2SA(ifad)->sa_family == AF_INET) {
715 ntohl(((struct sockaddr_in *)IFADDR2SA(ifad))->sin_addr.
717 if (myNetAddrs[i] != ifinaddr) {
721 rxmtu = rxi_AdjustIfMTU(rxmtu);
723 rxmtu * rxi_nRecvFrags +
724 ((rxi_nRecvFrags - 1) * UDP_HDR_SIZE);
725 maxmtu = rxi_AdjustMaxMTU(rxmtu, maxmtu);
726 addrs[i++] = ifinaddr;
727 if ((ifinaddr != 0x7f000001) && (maxmtu > rx_maxReceiveSize)) {
728 rx_maxReceiveSize = MIN(RX_MAX_PACKET_SIZE, maxmtu);
730 MIN(rx_maxReceiveSize, rx_maxReceiveSizeUser);
737 rx_maxJumboRecvSize =
738 RX_HEADER_SIZE + rxi_nDgramPackets * RX_JUMBOBUFFERSIZE +
739 (rxi_nDgramPackets - 1) * RX_JUMBOHEADERSIZE;
740 rx_maxJumboRecvSize = MAX(rx_maxJumboRecvSize, rx_maxReceiveSize);
744 for (l = 0; l < i; l++) {
745 myNetMTUs[l] = mtus[l];
746 myNetAddrs[l] = addrs[l];
752 #if defined(AFS_DARWIN60_ENV) || defined(AFS_XBSD_ENV)
753 /* Returns ifnet which best matches address */
754 #ifdef AFS_DARWIN80_ENV
759 rxi_FindIfnet(afs_uint32 addr, afs_uint32 * maskp)
761 struct sockaddr_in s, sr;
762 #ifdef AFS_DARWIN80_ENV
768 s.sin_family = AF_INET;
769 s.sin_addr.s_addr = addr;
770 #ifdef AFS_DARWIN80_ENV
771 ifad = ifaddr_withnet((struct sockaddr *)&s);
773 ifad = ifa_ifwithnet((struct sockaddr *)&s);
776 #ifdef AFS_DARWIN80_ENV
778 ifaddr_netmask(ifad, (struct sockaddr *)&sr, sizeof(sr));
779 *maskp = sr.sin_addr.s_addr;
781 return (ifad ? ifaddr_ifnet(ifad) : NULL);
784 *maskp = ((struct sockaddr_in *)ifad->ifa_netmask)->sin_addr.s_addr;
785 return (ifad ? ifad->ifa_ifp : NULL);
789 #else /* DARWIN60 || XBSD */
791 /* Returns ifnet which best matches address */
793 rxi_FindIfnet(afs_uint32 addr, afs_uint32 * maskp)
796 extern struct in_ifaddr *in_ifaddr;
797 struct in_ifaddr *ifa, *ifad = NULL;
801 #if defined(AFS_DARWIN_ENV)
802 for (ifa = TAILQ_FIRST(&in_ifaddrhead); ifa;
803 ifa = TAILQ_NEXT(ifa, ia_link)) {
805 for (ifa = in_ifaddr; ifa; ifa = ifa->ia_next) {
807 if ((addr & ifa->ia_netmask) == ifa->ia_net) {
808 if ((addr & ifa->ia_subnetmask) == ifa->ia_subnet) {
809 if (IA_SIN(ifa)->sin_addr.s_addr == addr) { /* ie, ME!!! */
814 if (match_value < 3) {
819 if (match_value < 2) {
824 } /* if net matches */
825 } /* for all in_ifaddrs */
829 *maskp = ifad->ia_subnetmask;
830 return (ifad ? ifad->ia_ifp : NULL);
832 #endif /* else DARWIN60 || XBSD */
833 #endif /* else AFS_USERSPACE_IP_ADDR */
834 #endif /* !SUN5 && !SGI62 */
837 /* rxk_NewSocket, rxk_FreeSocket and osi_NetSend are from the now defunct
838 * afs_osinet.c. One could argue that rxi_NewSocket could go into the
839 * system specific subdirectories for all systems. But for the moment,
840 * most of it is simple to follow common code.
842 #if !defined(UKERNEL)
843 #if !defined(AFS_SUN5_ENV) && !defined(AFS_LINUX20_ENV)
844 /* rxk_NewSocket creates a new socket on the specified port. The port is
845 * in network byte order.
848 rxk_NewSocketHost(afs_uint32 ahost, short aport)
850 register afs_int32 code;
851 #ifdef AFS_DARWIN80_ENV
854 struct socket *newSocket;
856 #if (!defined(AFS_HPUX1122_ENV) && !defined(AFS_FBSD50_ENV))
859 struct sockaddr_in myaddr;
860 #ifdef AFS_HPUX110_ENV
861 /* prototype copied from kernel source file streams/str_proto.h */
862 extern MBLKP allocb_wait(int, int);
864 int addrsize = sizeof(struct sockaddr_in);
866 extern struct fileops socketops;
872 AFS_STATCNT(osi_NewSocket);
873 #if (defined(AFS_DARWIN_ENV) || defined(AFS_XBSD_ENV)) && defined(KERNEL_FUNNEL)
874 thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
878 #if defined(AFS_HPUX102_ENV)
879 #if defined(AFS_HPUX110_ENV)
880 /* we need a file associated with the socket so sosend in NetSend
882 /* blocking socket */
883 code = socreate(AF_INET, &newSocket, SOCK_DGRAM, 0, 0);
887 fp->f_flag = FREAD | FWRITE;
888 fp->f_type = DTYPE_SOCKET;
889 fp->f_ops = &socketops;
891 fp->f_data = (void *)newSocket;
892 newSocket->so_fp = (void *)fp;
894 #else /* AFS_HPUX110_ENV */
895 code = socreate(AF_INET, &newSocket, SOCK_DGRAM, 0, SS_NOWAIT);
896 #endif /* else AFS_HPUX110_ENV */
897 #elif defined(AFS_SGI65_ENV) || defined(AFS_OBSD_ENV)
898 code = socreate(AF_INET, &newSocket, SOCK_DGRAM, IPPROTO_UDP);
899 #elif defined(AFS_FBSD50_ENV)
900 code = socreate(AF_INET, &newSocket, SOCK_DGRAM, IPPROTO_UDP,
901 afs_osi_credp, curthread);
902 #elif defined(AFS_FBSD40_ENV)
903 code = socreate(AF_INET, &newSocket, SOCK_DGRAM, IPPROTO_UDP, curproc);
904 #elif defined(AFS_DARWIN80_ENV)
905 code = sock_socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP, NULL, NULL, &newSocket);
907 code = socreate(AF_INET, &newSocket, SOCK_DGRAM, 0);
908 #endif /* AFS_HPUX102_ENV */
912 memset(&myaddr, 0, sizeof myaddr);
913 myaddr.sin_family = AF_INET;
914 myaddr.sin_port = aport;
915 myaddr.sin_addr.s_addr = ahost;
916 #ifdef STRUCT_SOCKADDR_HAS_SA_LEN
917 myaddr.sin_len = sizeof(myaddr);
920 #ifdef AFS_HPUX110_ENV
921 bindnam = allocb_wait((addrsize + SO_MSGOFFSET + 1), BPRI_MED);
926 memcpy((caddr_t) bindnam->b_rptr + SO_MSGOFFSET, (caddr_t) & myaddr,
928 bindnam->b_wptr = bindnam->b_rptr + (addrsize + SO_MSGOFFSET + 1);
930 code = sobind(newSocket, bindnam, addrsize);
933 #if !defined(AFS_HPUX1122_ENV)
940 #else /* AFS_HPUX110_ENV */
941 #if defined(AFS_DARWIN80_ENV)
946 code = sock_setsockopt(newSocket, SOL_SOCKET, SO_SNDBUF,
947 &buflen, sizeof(buflen));
948 code2 = sock_setsockopt(newSocket, SOL_SOCKET, SO_RCVBUF,
949 &buflen, sizeof(buflen));
953 osi_Panic("osi_NewSocket: last attempt to reserve 32K failed!\n");
958 code = soreserve(newSocket, 50000, 50000);
960 code = soreserve(newSocket, 32766, 32766);
962 osi_Panic("osi_NewSocket: last attempt to reserve 32K failed!\n");
965 #if defined(AFS_DARWIN_ENV) || defined(AFS_FBSD_ENV)
966 #if defined(AFS_FBSD50_ENV)
967 code = sobind(newSocket, (struct sockaddr *)&myaddr, curthread);
968 #elif defined(AFS_FBSD40_ENV)
969 code = sobind(newSocket, (struct sockaddr *)&myaddr, curproc);
971 code = sobind(newSocket, (struct sockaddr *)&myaddr);
974 dpf(("sobind fails (%d)\n", (int)code));
979 #else /* defined(AFS_DARWIN_ENV) || defined(AFS_FBSD_ENV) */
981 nam = m_getclr(M_WAIT, MT_SONAME);
982 #else /* AFS_OSF_ENV */
983 nam = m_get(M_WAIT, MT_SONAME);
986 #if defined(KERNEL_HAVE_UERROR)
991 nam->m_len = sizeof(myaddr);
992 memcpy(mtod(nam, caddr_t), &myaddr, sizeof(myaddr));
994 BHV_PDATA(&bhv) = (void *)newSocket;
995 code = sobind(&bhv, nam);
998 code = sobind(newSocket, nam);
1001 dpf(("sobind fails (%d)\n", (int)code));
1003 #ifndef AFS_SGI65_ENV
1008 #endif /* else AFS_DARWIN_ENV */
1009 #endif /* else AFS_HPUX110_ENV */
1012 #if defined(AFS_DARWIN_ENV) && defined(KERNEL_FUNNEL)
1013 thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
1015 return (osi_socket *)newSocket;
1019 #if defined(AFS_DARWIN_ENV) && defined(KERNEL_FUNNEL)
1020 thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
1022 return (osi_socket *)0;
1026 rxk_NewSocket(short aport)
1028 return rxk_NewSocketHost(0, aport);
1031 /* free socket allocated by rxk_NewSocket */
1033 rxk_FreeSocket(register struct socket *asocket)
1035 AFS_STATCNT(osi_FreeSocket);
1036 #if defined(AFS_DARWIN_ENV) && defined(KERNEL_FUNNEL)
1037 thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
1039 #ifdef AFS_HPUX110_ENV
1040 if (asocket->so_fp) {
1041 struct file *fp = asocket->so_fp;
1042 #if !defined(AFS_HPUX1123_ENV)
1043 /* 11.23 still has falloc, but not FPENTRYFREE !
1044 * so for now if we shutdown, we will waist a file
1047 asocket->so_fp = NULL;
1050 #endif /* AFS_HPUX110_ENV */
1052 #if defined(AFS_DARWIN_ENV) && defined(KERNEL_FUNNEL)
1053 thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
1057 #endif /* !SUN5 && !LINUX20 */
1059 #if defined(RXK_LISTENER_ENV) || defined(AFS_SUN5_ENV)
1061 * Run RX event daemon every second (5 times faster than rest of systems)
1064 afs_rxevent_daemon(void)
1070 #ifdef RX_ENABLE_LOCKS
1072 #endif /* RX_ENABLE_LOCKS */
1074 rxevent_RaiseEvents(&temp);
1076 #ifdef RX_ENABLE_LOCKS
1078 #endif /* RX_ENABLE_LOCKS */
1079 #ifdef RX_KERNEL_TRACE
1080 afs_Trace1(afs_iclSetp, CM_TRACE_TIMESTAMP, ICL_TYPE_STRING,
1081 "before afs_osi_Wait()");
1083 afs_osi_Wait(500, NULL, 0);
1084 #ifdef RX_KERNEL_TRACE
1085 afs_Trace1(afs_iclSetp, CM_TRACE_TIMESTAMP, ICL_TYPE_STRING,
1086 "after afs_osi_Wait()");
1088 if (afs_termState == AFSOP_STOP_RXEVENT) {
1089 #ifdef RXK_LISTENER_ENV
1090 afs_termState = AFSOP_STOP_RXK_LISTENER;
1092 afs_termState = AFSOP_STOP_COMPLETE;
1094 osi_rxWakeup(&afs_termState);
1101 #ifdef RXK_LISTENER_ENV
1103 /* rxk_ReadPacket returns 1 if valid packet, 0 on error. */
1105 rxk_ReadPacket(osi_socket so, struct rx_packet *p, int *host, int *port)
1108 struct sockaddr_in from;
1111 register afs_int32 tlen;
1112 afs_int32 savelen; /* was using rlen but had aliasing problems */
1113 rx_computelen(p, tlen);
1114 rx_SetDataSize(p, tlen); /* this is the size of the user data area */
1116 tlen += RX_HEADER_SIZE; /* now this is the size of the entire packet */
1117 rlen = rx_maxJumboRecvSize; /* this is what I am advertising. Only check
1118 * it once in order to avoid races. */
1121 tlen = rxi_AllocDataBuf(p, tlen, RX_PACKET_CLASS_RECV_CBUF);
1129 /* add some padding to the last iovec, it's just to make sure that the
1130 * read doesn't return more data than we expect, and is done to get around
1131 * our problems caused by the lack of a length field in the rx header. */
1132 savelen = p->wirevec[p->niovecs - 1].iov_len;
1133 p->wirevec[p->niovecs - 1].iov_len = savelen + RX_EXTRABUFFERSIZE;
1135 nbytes = tlen + sizeof(afs_int32);
1136 #ifdef RX_KERNEL_TRACE
1137 if (ICL_SETACTIVE(afs_iclSetp)) {
1139 afs_Trace1(afs_iclSetp, CM_TRACE_TIMESTAMP, ICL_TYPE_STRING,
1140 "before osi_NetRecive()");
1144 code = osi_NetReceive(rx_socket, &from, p->wirevec, p->niovecs, &nbytes);
1146 #ifdef RX_KERNEL_TRACE
1147 if (ICL_SETACTIVE(afs_iclSetp)) {
1149 afs_Trace1(afs_iclSetp, CM_TRACE_TIMESTAMP, ICL_TYPE_STRING,
1150 "after osi_NetRecive()");
1154 /* restore the vec to its correct state */
1155 p->wirevec[p->niovecs - 1].iov_len = savelen;
1158 p->length = nbytes - RX_HEADER_SIZE;;
1159 if ((nbytes > tlen) || (p->length & 0x8000)) { /* Bogus packet */
1161 MUTEX_ENTER(&rx_stats_mutex);
1162 rx_stats.bogusPacketOnRead++;
1163 rx_stats.bogusHost = from.sin_addr.s_addr;
1164 MUTEX_EXIT(&rx_stats_mutex);
1165 dpf(("B: bogus packet from [%x,%d] nb=%d",
1166 from.sin_addr.s_addr, from.sin_port, nbytes));
1170 /* Extract packet header. */
1171 rxi_DecodePacketHeader(p);
1173 *host = from.sin_addr.s_addr;
1174 *port = from.sin_port;
1175 if (p->header.type > 0 && p->header.type < RX_N_PACKET_TYPES) {
1176 MUTEX_ENTER(&rx_stats_mutex);
1177 rx_stats.packetsRead[p->header.type - 1]++;
1178 MUTEX_EXIT(&rx_stats_mutex);
1181 /* Free any empty packet buffers at the end of this packet */
1182 rxi_TrimDataBufs(p, 1);
1192 * Listen for packets on socket. This thread is typically started after
1193 * rx_Init has called rxi_StartListener(), but nevertheless, ensures that
1194 * the start state is set before proceeding.
1196 * Note that this thread is outside the AFS global lock for much of
1199 * In many OS's, the socket receive code sleeps interruptibly. That's not what
1200 * we want here. So we need to either block all signals (including SIGKILL
1201 * and SIGSTOP) or reset the thread's signal state to unsignalled when the
1202 * OS's socket receive routine returns as a result of a signal.
1204 int rxk_ListenerPid; /* Used to signal process to wakeup at shutdown */
1205 #ifdef AFS_LINUX20_ENV
1206 struct task_struct *rxk_ListenerTask;
1211 * Run the listener as a kernel thread.
1217 void rxk_ListenerProc(void);
1219 (NULL, DEFAULTSTKSZ, rxk_ListenerProc, 0, 0, &p0, TS_RUN,
1220 minclsyspri) == NULL)
1221 osi_Panic("rxk_Listener: failed to start listener thread!\n");
1225 rxk_ListenerProc(void)
1226 #else /* AFS_SUN5_ENV */
1229 #endif /* AFS_SUN5_ENV */
1231 struct rx_packet *rxp = NULL;
1235 #ifdef AFS_LINUX20_ENV
1236 rxk_ListenerPid = current->pid;
1237 rxk_ListenerTask = current;
1240 rxk_ListenerPid = 1; /* No PID, just a flag that we're alive */
1241 #endif /* AFS_SUN5_ENV */
1243 rxk_ListenerPid = curproc->p_pid;
1244 #endif /* AFS_FBSD_ENV */
1245 #ifdef AFS_DARWIN80_ENV
1246 rxk_ListenerPid = proc_selfpid();
1247 #elif defined(AFS_DARWIN_ENV)
1248 rxk_ListenerPid = current_proc()->p_pid;
1250 #if defined(RX_ENABLE_LOCKS) && !defined(AFS_SUN5_ENV)
1252 #endif /* RX_ENABLE_LOCKS && !AFS_SUN5_ENV */
1253 while (afs_termState != AFSOP_STOP_RXK_LISTENER) {
1255 rxi_RestoreDataBufs(rxp);
1257 rxp = rxi_AllocPacket(RX_PACKET_CLASS_RECEIVE);
1259 osi_Panic("rxk_Listener: No more Rx buffers!\n");
1261 if (!(code = rxk_ReadPacket(rx_socket, rxp, &host, &port))) {
1262 rxp = rxi_ReceivePacket(rxp, rx_socket, host, port, 0, 0);
1266 #ifdef RX_ENABLE_LOCKS
1268 #endif /* RX_ENABLE_LOCKS */
1269 if (afs_termState == AFSOP_STOP_RXK_LISTENER) {
1270 afs_termState = AFSOP_STOP_COMPLETE;
1271 osi_rxWakeup(&afs_termState);
1273 rxk_ListenerPid = 0;
1274 #ifdef AFS_LINUX20_ENV
1275 rxk_ListenerTask = 0;
1276 osi_rxWakeup(&rxk_ListenerTask);
1278 #if defined(AFS_SUN5_ENV)
1279 osi_rxWakeup(&rxk_ListenerPid);
1283 #endif /* AFS_SUN5_ENV */
1286 #if !defined(AFS_LINUX20_ENV) && !defined(AFS_SUN5_ENV) && !defined(AFS_DARWIN_ENV) && !defined(AFS_XBSD_ENV)
1287 /* The manner of stopping the rx listener thread may vary. Most unix's should
1288 * be able to call soclose.
1291 osi_StopListener(void)
1296 #endif /* RXK_LISTENER_ENV */
1298 #endif /* !NCR && !UKERNEL */