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(struct sockaddr_storage *saddr, int salen);
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(struct sockaddr_storage *saddr, int salen)
114 sockp = (osi_socket *)rxk_NewSocketHost(saddr, salen);
115 if (sockp == (osi_socket *)0)
116 return OSI_NULLSOCKET;
117 rxk_AddPort(rx_ss2pn(saddr), (char *)sockp);
118 return (osi_socket) sockp;
122 rxi_GetUDPSocket(u_short port)
124 struct sockaddr_storage saddr;
125 struct sockaddr_in *sin = (struct sockaddr_in *) &saddr;
127 memset((void *) &saddr, 0, sizeof(saddr));
129 sin->sin_family = AF_INET;
130 sin->sin_addr.s_addr = htonl(INADDR_ANY);
131 sin->sin_port = port;
133 return rxi_GetHostUDPSocket(&saddr, sizeof(struct sockaddr_in));
137 osi_Panic(msg, a1, a2, a3)
141 msg = "Unknown AFS panic";
143 printf(msg, a1, a2, a3);
144 #ifdef AFS_LINUX24_ENV
152 * osi_utoa() - write the NUL-terminated ASCII decimal form of the given
153 * unsigned long value into the given buffer. Returns 0 on success,
154 * and a value less than 0 on failure. The contents of the buffer is
155 * defined only on success.
159 osi_utoa(char *buf, size_t len, unsigned long val)
161 long k; /* index of first byte of string value */
163 /* we definitely need room for at least one digit and NUL */
169 /* compute the string form from the high end of the buffer */
172 for (k = len - 2; k >= 0; k--) {
173 buf[k] = val % 10 + '0';
180 /* did we finish converting val to string form? */
186 /* this should never happen */
192 /* this should never happen */
198 /* if necessary, relocate string to beginning of buf[] */
203 * We need to achieve the effect of calling
205 * memmove(buf, &buf[k], len - k);
207 * However, since memmove() is not available in all
208 * kernels, we explicitly do an appropriate copy.
214 while ((*dst++ = *src++) != '\0')
222 * osi_AssertFailK() -- used by the osi_Assert() macro.
224 * It essentially does
226 * osi_Panic("assertion failed: %s, file: %s, line: %d", expr, file, line);
228 * Since the kernel version of osi_Panic() only passes its first
229 * argument to the native panic(), we construct a single string and hand
230 * that to osi_Panic().
233 osi_AssertFailK(const char *expr, const char *file, int line)
235 static const char msg0[] = "assertion failed: ";
236 static const char msg1[] = ", file: ";
237 static const char msg2[] = ", line: ";
238 static const char msg3[] = "\n";
241 * These buffers add up to 1K, which is a pleasantly nice round
242 * value, but probably not vital.
247 /* check line number conversion */
249 if (osi_utoa(linebuf, sizeof linebuf, line) < 0) {
250 osi_Panic("osi_AssertFailK: error in osi_utoa()\n");
255 #define ADDBUF(BUF, STR) \
256 if (strlen(BUF) + strlen((char *)(STR)) + 1 <= sizeof BUF) { \
257 strcat(BUF, (char *)(STR)); \
266 ADDBUF(buf, linebuf);
275 /* This is the server process request loop. Kernel server
276 * processes never become listener threads */
282 rxi_MorePackets(rx_maxReceiveWindow + 2); /* alloc more packets */
283 rxi_dataQuota += rx_initSendWindow; /* Reserve some pkts for hard times */
284 /* threadID is used for making decisions in GetCall. Get it by bumping
285 * number of threads handling incoming calls */
286 threadID = rxi_availProcs++;
288 #ifdef RX_ENABLE_LOCKS
290 #endif /* RX_ENABLE_LOCKS */
291 rxi_ServerProc(threadID, NULL, NULL);
292 #ifdef RX_ENABLE_LOCKS
294 #endif /* RX_ENABLE_LOCKS */
296 #endif /* !UKERNEL */
298 #ifndef RXK_LISTENER_ENV
299 /* asize includes the Rx header */
301 MyPacketProc(struct rx_packet **ahandle, int asize)
303 struct rx_packet *tp;
305 /* If this is larger than we expected, increase rx_maxReceiveDataSize */
306 /* If we can't scrounge enough cbufs, then we have to drop the packet,
307 * but we should set a flag so we magic up some more at our leisure.
310 if ((asize >= 0) && (asize <= RX_MAX_PACKET_SIZE)) {
311 tp = rxi_AllocPacket(RX_PACKET_CLASS_RECEIVE);
312 if (tp && (tp->length + RX_HEADER_SIZE) < asize) {
314 rxi_AllocDataBuf(tp, asize - (tp->length + RX_HEADER_SIZE),
315 RX_PACKET_CLASS_RECV_CBUF)) {
318 MUTEX_ENTER(&rx_stats_mutex);
319 rx_stats.noPacketBuffersOnRead++;
320 MUTEX_EXIT(&rx_stats_mutex);
325 * XXX if packet is too long for our buffer,
326 * should do this at a higher layer and let other
327 * end know we're losing.
329 MUTEX_ENTER(&rx_stats_mutex);
330 rx_stats.bogusPacketOnRead++;
331 MUTEX_EXIT(&rx_stats_mutex);
332 /* I DON"T LIKE THIS PRINTF -- PRINTFS MAKE THINGS VERY VERY SLOOWWW */
333 dpf(("rx: packet dropped: bad ulen=%d\n", asize));
339 /* otherwise we have a packet, set appropriate values */
345 MyArrivalProc(struct rx_packet *ahandle,
346 struct sockaddr_in *afrom,
347 struct socket *arock,
350 /* handle basic rx packet */
351 ahandle->length = asize - RX_HEADER_SIZE;
352 rxi_DecodePacketHeader(ahandle);
354 rxi_ReceivePacket(ahandle, arock, (struct sockaddr_storage *) afrom,
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(rx_HostOf(pp));
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(rx_HostOf(pp), 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(rx_HostOf(pp));
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;
526 afs_uint32 addrs[ADDRSPERSITE];
527 int mtus[ADDRSPERSITE];
529 memset((void *)addrs, 0, sizeof(addrs));
530 memset((void *)mtus, 0, sizeof(mtus));
532 for (i = 0; i < afs_cb_interface.numberOfInterfaces; i++) {
533 if (!afs_cb_interface.mtu[i])
534 afs_cb_interface.mtu[i] = htonl(1500);
535 rxmtu = (ntohl(afs_cb_interface.mtu[i]) - RX_IPUDP_SIZE);
536 ifinaddr = ntohl(afs_cb_interface.addr_in[i]);
537 if (myNetAddrs[i] != ifinaddr)
541 rxmtu = rxi_AdjustIfMTU(rxmtu);
543 rxmtu * rxi_nRecvFrags + ((rxi_nRecvFrags - 1) * UDP_HDR_SIZE);
544 maxmtu = rxi_AdjustMaxMTU(rxmtu, maxmtu);
545 addrs[i++] = ifinaddr;
546 if ((ifinaddr != 0x7f000001) && (maxmtu > rx_maxReceiveSize)) {
547 rx_maxReceiveSize = MIN(RX_MAX_PACKET_SIZE, maxmtu);
548 rx_maxReceiveSize = MIN(rx_maxReceiveSize, rx_maxReceiveSizeUser);
552 rx_maxJumboRecvSize =
553 RX_HEADER_SIZE + (rxi_nDgramPackets * RX_JUMBOBUFFERSIZE) +
554 ((rxi_nDgramPackets - 1) * RX_JUMBOHEADERSIZE);
555 rx_maxJumboRecvSize = MAX(rx_maxJumboRecvSize, rx_maxReceiveSize);
558 for (j = 0; j < i; j++) {
559 myNetMTUs[j] = mtus[j];
560 myNetAddrs[j] = addrs[j];
567 /* Returns the afs_cb_interface inxex which best matches address.
568 * If none is found, we return -1.
571 rxi_Findcbi(afs_uint32 addr)
574 afs_uint32 myAddr, thisAddr, netMask, subnetMask;
575 afs_int32 rvalue = -1;
578 if (numMyNetAddrs == 0)
579 (void)rxi_GetcbiInfo();
581 myAddr = ntohl(addr);
583 if (IN_CLASSA(myAddr))
584 netMask = IN_CLASSA_NET;
585 else if (IN_CLASSB(myAddr))
586 netMask = IN_CLASSB_NET;
587 else if (IN_CLASSC(myAddr))
588 netMask = IN_CLASSC_NET;
592 for (j = 0; j < afs_cb_interface.numberOfInterfaces; j++) {
593 thisAddr = ntohl(afs_cb_interface.addr_in[j]);
594 subnetMask = ntohl(afs_cb_interface.subnetmask[j]);
595 if ((myAddr & netMask) == (thisAddr & netMask)) {
596 if ((myAddr & subnetMask) == (thisAddr & subnetMask)) {
597 if (myAddr == thisAddr) {
602 if (match_value < 3) {
607 if (match_value < 2) {
618 #else /* AFS_USERSPACE_IP_ADDR */
620 #if !defined(AFS_AIX41_ENV) && !defined(AFS_DUX40_ENV) && !defined(AFS_DARWIN_ENV) && !defined(AFS_XBSD_ENV)
621 #define IFADDR2SA(f) (&((f)->ifa_addr))
622 #else /* AFS_AIX41_ENV */
623 #define IFADDR2SA(f) ((f)->ifa_addr)
632 register int rxmtu, maxmtu;
633 afs_uint32 addrs[ADDRSPERSITE];
634 int mtus[ADDRSPERSITE];
636 #if defined(AFS_DARWIN80_ENV)
639 ifaddr_t *ifads, ifad;
640 register ifnet_t ifn;
641 struct sockaddr sout;
642 struct sockaddr_in *sin;
644 struct ifaddr *ifad; /* ifnet points to a if_addrlist of ifaddrs */
645 register struct ifnet *ifn;
648 memset(addrs, 0, sizeof(addrs));
649 memset(mtus, 0, sizeof(mtus));
651 #if defined(AFS_DARWIN80_ENV)
652 t = ifnet_get_address_list_family(NULL, &ifads, AF_INET);
654 rxmtu = ifnet_mtu(ifn) - RX_IPUDP_SIZE;
655 while((ifads[cnt] != NULL) && cnt < ADDRSPERSITE) {
656 t = ifaddr_address(ifads[cnt], &sout, sizeof(sout));
657 sin = (struct sockaddr_in *)&sout;
658 ifinaddr = ntohl(sin->sin_addr.s_addr);
659 if (myNetAddrs[i] != ifinaddr) {
663 rxmtu = rxi_AdjustIfMTU(rxmtu);
665 rxmtu * rxi_nRecvFrags +
666 ((rxi_nRecvFrags - 1) * UDP_HDR_SIZE);
667 maxmtu = rxi_AdjustMaxMTU(rxmtu, maxmtu);
668 addrs[i++] = ifinaddr;
669 if ((ifinaddr != 0x7f000001) && (maxmtu > rx_maxReceiveSize)) {
670 rx_maxReceiveSize = MIN(RX_MAX_PACKET_SIZE, maxmtu);
672 MIN(rx_maxReceiveSize, rx_maxReceiveSizeUser);
676 ifnet_free_address_list(ifads);
679 #if defined(AFS_DARWIN_ENV) || defined(AFS_FBSD_ENV)
680 TAILQ_FOREACH(ifn, &ifnet, if_link) {
681 if (i >= ADDRSPERSITE)
683 #elif defined(AFS_OBSD_ENV)
684 for (ifn = ifnet.tqh_first; i < ADDRSPERSITE && ifn != NULL;
685 ifn = ifn->if_list.tqe_next) {
687 for (ifn = ifnet; ifn != NULL && i < ADDRSPERSITE; ifn = ifn->if_next) {
689 rxmtu = (ifn->if_mtu - RX_IPUDP_SIZE);
690 #if defined(AFS_DARWIN_ENV) || defined(AFS_FBSD_ENV)
691 TAILQ_FOREACH(ifad, &ifn->if_addrhead, ifa_link) {
692 if (i >= ADDRSPERSITE)
694 #elif defined(AFS_OBSD_ENV)
695 for (ifad = ifn->if_addrlist.tqh_first;
696 ifad != NULL && i < ADDRSPERSITE;
697 ifad = ifad->ifa_list.tqe_next) {
699 for (ifad = ifn->if_addrlist; ifad != NULL && i < ADDRSPERSITE;
700 ifad = ifad->ifa_next) {
702 if (IFADDR2SA(ifad)->sa_family == AF_INET) {
704 ntohl(((struct sockaddr_in *)IFADDR2SA(ifad))->sin_addr.
706 if (myNetAddrs[i] != ifinaddr) {
710 rxmtu = rxi_AdjustIfMTU(rxmtu);
712 rxmtu * rxi_nRecvFrags +
713 ((rxi_nRecvFrags - 1) * UDP_HDR_SIZE);
714 maxmtu = rxi_AdjustMaxMTU(rxmtu, maxmtu);
715 addrs[i++] = ifinaddr;
716 if ((ifinaddr != 0x7f000001) && (maxmtu > rx_maxReceiveSize)) {
717 rx_maxReceiveSize = MIN(RX_MAX_PACKET_SIZE, maxmtu);
719 MIN(rx_maxReceiveSize, rx_maxReceiveSizeUser);
726 rx_maxJumboRecvSize =
727 RX_HEADER_SIZE + rxi_nDgramPackets * RX_JUMBOBUFFERSIZE +
728 (rxi_nDgramPackets - 1) * RX_JUMBOHEADERSIZE;
729 rx_maxJumboRecvSize = MAX(rx_maxJumboRecvSize, rx_maxReceiveSize);
733 for (j = 0; j < i; j++) {
734 myNetMTUs[j] = mtus[j];
735 myNetAddrs[j] = addrs[j];
741 #if defined(AFS_DARWIN60_ENV) || defined(AFS_XBSD_ENV)
742 /* Returns ifnet which best matches address */
743 #ifdef AFS_DARWIN80_ENV
748 rxi_FindIfnet(afs_uint32 addr, afs_uint32 * maskp)
750 struct sockaddr_in s, sr;
751 #ifdef AFS_DARWIN80_ENV
757 s.sin_family = AF_INET;
758 s.sin_addr.s_addr = addr;
759 #ifdef AFS_DARWIN80_ENV
760 ifad = ifaddr_withnet((struct sockaddr *)&s);
762 ifad = ifa_ifwithnet((struct sockaddr *)&s);
765 #ifdef AFS_DARWIN80_ENV
767 ifaddr_netmask(ifad, (struct sockaddr *)&sr, sizeof(sr));
768 *maskp = sr.sin_addr.s_addr;
770 return (ifad ? ifaddr_ifnet(ifad) : NULL);
773 *maskp = ((struct sockaddr_in *)ifad->ifa_netmask)->sin_addr.s_addr;
774 return (ifad ? ifad->ifa_ifp : NULL);
778 #else /* DARWIN60 || XBSD */
780 /* Returns ifnet which best matches address */
782 rxi_FindIfnet(afs_uint32 addr, afs_uint32 * maskp)
785 extern struct in_ifaddr *in_ifaddr;
786 struct in_ifaddr *ifa, *ifad = NULL;
790 #if defined(AFS_DARWIN_ENV)
791 for (ifa = TAILQ_FIRST(&in_ifaddrhead); ifa;
792 ifa = TAILQ_NEXT(ifa, ia_link)) {
794 for (ifa = in_ifaddr; ifa; ifa = ifa->ia_next) {
796 if ((addr & ifa->ia_netmask) == ifa->ia_net) {
797 if ((addr & ifa->ia_subnetmask) == ifa->ia_subnet) {
798 if (IA_SIN(ifa)->sin_addr.s_addr == addr) { /* ie, ME!!! */
803 if (match_value < 3) {
808 if (match_value < 2) {
813 } /* if net matches */
814 } /* for all in_ifaddrs */
818 *maskp = ifad->ia_subnetmask;
819 return (ifad ? ifad->ia_ifp : NULL);
821 #endif /* else DARWIN60 || XBSD */
822 #endif /* else AFS_USERSPACE_IP_ADDR */
823 #endif /* !SUN5 && !SGI62 */
826 /* rxk_NewSocket, rxk_FreeSocket and osi_NetSend are from the now defunct
827 * afs_osinet.c. One could argue that rxi_NewSocket could go into the
828 * system specific subdirectories for all systems. But for the moment,
829 * most of it is simple to follow common code.
831 #if !defined(UKERNEL)
832 #if !defined(AFS_SUN5_ENV) && !defined(AFS_LINUX20_ENV)
833 /* rxk_NewSocket creates a new socket on the specified port. The port is
834 * in network byte order.
837 rxk_NewSocketHost(struct sockaddr_storage *saddr, int salen)
839 register afs_int32 code;
840 #ifdef AFS_DARWIN80_ENV
843 struct socket *newSocket;
845 #if (!defined(AFS_HPUX1122_ENV) && !defined(AFS_FBSD50_ENV))
848 #ifdef AFS_HPUX110_ENV
849 /* prototype copied from kernel source file streams/str_proto.h */
850 extern MBLKP allocb_wait(int, int);
852 int addrsize = sizeof(struct sockaddr_in);
854 extern struct fileops socketops;
860 AFS_STATCNT(osi_NewSocket);
861 #if (defined(AFS_DARWIN_ENV) || defined(AFS_XBSD_ENV)) && defined(KERNEL_FUNNEL)
862 thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
866 #if defined(AFS_HPUX102_ENV)
867 #if defined(AFS_HPUX110_ENV)
868 /* we need a file associated with the socket so sosend in NetSend
870 /* blocking socket */
871 code = socreate(rx_ssfamily(saddr), &newSocket, SOCK_DGRAM, 0, 0);
875 fp->f_flag = FREAD | FWRITE;
876 fp->f_type = DTYPE_SOCKET;
877 fp->f_ops = &socketops;
879 fp->f_data = (void *)newSocket;
880 newSocket->so_fp = (void *)fp;
882 #else /* AFS_HPUX110_ENV */
883 code = socreate(rx_ssfamilty(saddr), &newSocket, SOCK_DGRAM, 0, SS_NOWAIT);
884 #endif /* else AFS_HPUX110_ENV */
885 #elif defined(AFS_SGI65_ENV) || defined(AFS_OBSD_ENV)
886 code = socreate(rx_ssfamily(saddr), &newSocket, SOCK_DGRAM, IPPROTO_UDP);
887 #elif defined(AFS_FBSD50_ENV)
888 code = socreate(rx_ssfamily(saddr), &newSocket, SOCK_DGRAM, IPPROTO_UDP,
889 afs_osi_credp, curthread);
890 #elif defined(AFS_FBSD40_ENV)
891 code = socreate(rx_ssfamily(saddr), &newSocket, SOCK_DGRAM, IPPROTO_UDP,
893 #elif defined(AFS_DARWIN80_ENV)
894 code = sock_socket(rx_ssfamily(saddr), SOCK_DGRAM, IPPROTO_UDP, NULL, NULL,
897 code = socreate(rx_ssfamily(saddr), &newSocket, SOCK_DGRAM, 0);
898 #endif /* AFS_HPUX102_ENV */
902 #ifdef AFS_HPUX110_ENV
903 bindnam = allocb_wait((addrsize + SO_MSGOFFSET + 1), BPRI_MED);
908 memcpy((caddr_t) bindnam->b_rptr + SO_MSGOFFSET, (caddr_t) addr,
910 bindnam->b_wptr = bindnam->b_rptr + (addrsize + SO_MSGOFFSET + 1);
912 code = sobind(newSocket, bindnam, addrsize);
915 #if !defined(AFS_HPUX1122_ENV)
922 #else /* AFS_HPUX110_ENV */
923 #if defined(AFS_DARWIN80_ENV)
928 code = sock_setsockopt(newSocket, SOL_SOCKET, SO_SNDBUF,
929 &buflen, sizeof(buflen));
930 code2 = sock_setsockopt(newSocket, SOL_SOCKET, SO_RCVBUF,
931 &buflen, sizeof(buflen));
935 osi_Panic("osi_NewSocket: last attempt to reserve 32K failed!\n");
940 code = soreserve(newSocket, 50000, 50000);
942 code = soreserve(newSocket, 32766, 32766);
944 osi_Panic("osi_NewSocket: last attempt to reserve 32K failed!\n");
947 #if defined(AFS_DARWIN_ENV) || defined(AFS_FBSD_ENV)
948 #if defined(AFS_FBSD50_ENV)
949 code = sobind(newSocket, (struct sockaddr *) saddr, curthread);
950 #elif defined(AFS_FBSD40_ENV)
951 code = sobind(newSocket, (struct sockaddr *) saddr, curproc);
953 code = sobind(newSocket, (struct sockaddr *) saddr);
956 dpf(("sobind fails (%d)\n", (int)code));
961 #else /* defined(AFS_DARWIN_ENV) || defined(AFS_FBSD_ENV) */
963 nam = m_getclr(M_WAIT, MT_SONAME);
964 #else /* AFS_OSF_ENV */
965 nam = m_get(M_WAIT, MT_SONAME);
968 #if defined(KERNEL_HAVE_UERROR)
974 memcpy(mtod(nam, caddr_t), saddr, salen);
976 BHV_PDATA(&bhv) = (void *)newSocket;
977 code = sobind(&bhv, nam);
980 code = sobind(newSocket, nam);
983 dpf(("sobind fails (%d)\n", (int)code));
985 #ifndef AFS_SGI65_ENV
990 #endif /* else AFS_DARWIN_ENV */
991 #endif /* else AFS_HPUX110_ENV */
994 #if defined(AFS_DARWIN_ENV) && defined(KERNEL_FUNNEL)
995 thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
997 return (osi_socket *)newSocket;
1001 #if defined(AFS_DARWIN_ENV) && defined(KERNEL_FUNNEL)
1002 thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
1004 return (osi_socket *)0;
1008 rxk_NewSocket(short aport)
1010 struct sockaddr_storage saddr;
1011 struct sockaddr_in *sin = (struct sockaddr_in *) &saddr;
1013 memset((void *) &saddr, 0, sizeof(saddr));
1015 sin->sin_family = AF_INET;
1016 sin->sin_addr.s_addr = 0;
1017 sin->sin_port = aport;
1019 return rxk_NewSocketHost(&saddr, sizeof(struct sockaddr_in));
1022 /* free socket allocated by rxk_NewSocket */
1024 rxk_FreeSocket(register struct socket *asocket)
1026 AFS_STATCNT(osi_FreeSocket);
1027 #if defined(AFS_DARWIN_ENV) && defined(KERNEL_FUNNEL)
1028 thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
1030 #ifdef AFS_HPUX110_ENV
1031 if (asocket->so_fp) {
1032 struct file *fp = asocket->so_fp;
1033 #if !defined(AFS_HPUX1123_ENV)
1034 /* 11.23 still has falloc, but not FPENTRYFREE !
1035 * so for now if we shutdown, we will waist a file
1038 asocket->so_fp = NULL;
1041 #endif /* AFS_HPUX110_ENV */
1043 #if defined(AFS_DARWIN_ENV) && defined(KERNEL_FUNNEL)
1044 thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
1048 #endif /* !SUN5 && !LINUX20 */
1050 #if defined(RXK_LISTENER_ENV) || defined(AFS_SUN5_ENV)
1052 * Run RX event daemon every second (5 times faster than rest of systems)
1055 afs_rxevent_daemon(void)
1061 #ifdef RX_ENABLE_LOCKS
1063 #endif /* RX_ENABLE_LOCKS */
1065 rxevent_RaiseEvents(&temp);
1067 #ifdef RX_ENABLE_LOCKS
1069 #endif /* RX_ENABLE_LOCKS */
1070 #ifdef RX_KERNEL_TRACE
1071 afs_Trace1(afs_iclSetp, CM_TRACE_TIMESTAMP, ICL_TYPE_STRING,
1072 "before afs_osi_Wait()");
1074 afs_osi_Wait(500, NULL, 0);
1075 #ifdef RX_KERNEL_TRACE
1076 afs_Trace1(afs_iclSetp, CM_TRACE_TIMESTAMP, ICL_TYPE_STRING,
1077 "after afs_osi_Wait()");
1079 if (afs_termState == AFSOP_STOP_RXEVENT) {
1080 #ifdef RXK_LISTENER_ENV
1081 afs_termState = AFSOP_STOP_RXK_LISTENER;
1083 afs_termState = AFSOP_STOP_COMPLETE;
1085 osi_rxWakeup(&afs_termState);
1092 #ifdef RXK_LISTENER_ENV
1094 /* rxk_ReadPacket returns 1 if valid packet, 0 on error. */
1096 rxk_ReadPacket(osi_socket so, struct rx_packet *p,
1097 struct sockaddr_storage *saddr, int *slen)
1102 register afs_int32 tlen;
1103 afs_int32 savelen; /* was using rlen but had aliasing problems */
1104 rx_computelen(p, tlen);
1105 rx_SetDataSize(p, tlen); /* this is the size of the user data area */
1107 tlen += RX_HEADER_SIZE; /* now this is the size of the entire packet */
1108 rlen = rx_maxJumboRecvSize; /* this is what I am advertising. Only check
1109 * it once in order to avoid races. */
1112 tlen = rxi_AllocDataBuf(p, tlen, RX_PACKET_CLASS_RECV_CBUF);
1120 /* add some padding to the last iovec, it's just to make sure that the
1121 * read doesn't return more data than we expect, and is done to get around
1122 * our problems caused by the lack of a length field in the rx header. */
1123 savelen = p->wirevec[p->niovecs - 1].iov_len;
1124 p->wirevec[p->niovecs - 1].iov_len = savelen + RX_EXTRABUFFERSIZE;
1126 nbytes = tlen + sizeof(afs_int32);
1127 #ifdef RX_KERNEL_TRACE
1128 if (ICL_SETACTIVE(afs_iclSetp)) {
1130 afs_Trace1(afs_iclSetp, CM_TRACE_TIMESTAMP, ICL_TYPE_STRING,
1131 "before osi_NetRecive()");
1135 code = osi_NetReceive(rx_socket, saddr, slen, p->wirevec, p->niovecs,
1138 #ifdef RX_KERNEL_TRACE
1139 if (ICL_SETACTIVE(afs_iclSetp)) {
1141 afs_Trace1(afs_iclSetp, CM_TRACE_TIMESTAMP, ICL_TYPE_STRING,
1142 "after osi_NetRecive()");
1146 /* restore the vec to its correct state */
1147 p->wirevec[p->niovecs - 1].iov_len = savelen;
1150 p->length = nbytes - RX_HEADER_SIZE;;
1151 if ((nbytes > tlen) || (p->length & 0x8000)) { /* Bogus packet */
1153 rxi_MorePackets(rx_initSendWindow);
1155 MUTEX_ENTER(&rx_stats_mutex);
1156 rx_stats.bogusPacketOnRead++;
1157 switch (rx_ssfamily(saddr)) {
1159 rx_stats.bogusHost = rx_ss2sin(saddr)->sin_addr.s_addr;
1164 #endif /* AF_INET6 */
1165 rx_stats.bogusHost = 0xffffffff;
1167 MUTEX_EXIT(&rx_stats_mutex);
1168 dpf(("B: bogus packet from [%x,%d] nb=%d",
1169 ntohl(rx_ss2v4addr(saddr)), ntohs(rx_ss2pn(saddr)),
1174 /* Extract packet header. */
1175 rxi_DecodePacketHeader(p);
1177 if (p->header.type > 0 && p->header.type < RX_N_PACKET_TYPES) {
1178 MUTEX_ENTER(&rx_stats_mutex);
1179 rx_stats.packetsRead[p->header.type - 1]++;
1180 MUTEX_EXIT(&rx_stats_mutex);
1183 /* Free any empty packet buffers at the end of this packet */
1184 rxi_TrimDataBufs(p, 1);
1194 * Listen for packets on socket. This thread is typically started after
1195 * rx_Init has called rxi_StartListener(), but nevertheless, ensures that
1196 * the start state is set before proceeding.
1198 * Note that this thread is outside the AFS global lock for much of
1201 * In many OS's, the socket receive code sleeps interruptibly. That's not what
1202 * we want here. So we need to either block all signals (including SIGKILL
1203 * and SIGSTOP) or reset the thread's signal state to unsignalled when the
1204 * OS's socket receive routine returns as a result of a signal.
1206 int rxk_ListenerPid; /* Used to signal process to wakeup at shutdown */
1210 * Run the listener as a kernel thread.
1216 void rxk_ListenerProc(void);
1218 (NULL, DEFAULTSTKSZ, rxk_ListenerProc, 0, 0, &p0, TS_RUN,
1219 minclsyspri) == NULL)
1220 osi_Panic("rxk_Listener: failed to start listener thread!\n");
1224 rxk_ListenerProc(void)
1225 #else /* AFS_SUN5_ENV */
1228 #endif /* AFS_SUN5_ENV */
1230 struct rx_packet *rxp = NULL;
1231 struct sockaddr_storage saddr;
1234 #ifdef AFS_LINUX20_ENV
1235 rxk_ListenerPid = current->pid;
1238 rxk_ListenerPid = 1; /* No PID, just a flag that we're alive */
1239 #endif /* AFS_SUN5_ENV */
1241 rxk_ListenerPid = curproc->p_pid;
1242 #endif /* AFS_FBSD_ENV */
1243 #ifdef AFS_DARWIN80_ENV
1244 rxk_ListenerPid = proc_selfpid();
1245 #elif defined(AFS_DARWIN_ENV)
1246 rxk_ListenerPid = current_proc()->p_pid;
1248 #if defined(RX_ENABLE_LOCKS) && !defined(AFS_SUN5_ENV)
1250 #endif /* RX_ENABLE_LOCKS && !AFS_SUN5_ENV */
1251 while (afs_termState != AFSOP_STOP_RXK_LISTENER) {
1253 rxi_RestoreDataBufs(rxp);
1255 rxp = rxi_AllocPacket(RX_PACKET_CLASS_RECEIVE);
1257 osi_Panic("rxk_Listener: No more Rx buffers!\n");
1259 if (!(code = rxk_ReadPacket(rx_socket, rxp, &saddr, &slen))) {
1260 rxp = rxi_ReceivePacket(rxp, rx_socket, &saddr, slen, 0, 0);
1264 #ifdef RX_ENABLE_LOCKS
1266 #endif /* RX_ENABLE_LOCKS */
1267 if (afs_termState == AFSOP_STOP_RXK_LISTENER) {
1268 afs_termState = AFSOP_STOP_COMPLETE;
1269 osi_rxWakeup(&afs_termState);
1271 rxk_ListenerPid = 0;
1272 #if defined(AFS_LINUX22_ENV) || defined(AFS_SUN5_ENV)
1273 osi_rxWakeup(&rxk_ListenerPid);
1277 #endif /* AFS_SUN5_ENV */
1280 #if !defined(AFS_LINUX20_ENV) && !defined(AFS_SUN5_ENV) && !defined(AFS_DARWIN_ENV) && !defined(AFS_XBSD_ENV)
1281 /* The manner of stopping the rx listener thread may vary. Most unix's should
1282 * be able to call soclose.
1285 osi_StopListener(void)
1290 #endif /* RXK_LISTENER_ENV */
1292 #endif /* !NCR && !UKERNEL */