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_knet.c - RX kernel send, receive and timer routines.
13 * Linux implementation.
15 #include <afsconfig.h>
16 #include "afs/param.h"
20 #ifdef AFS_LINUX22_ENV
21 #include "rx/rx_kcommon.h"
22 #if defined(AFS_LINUX24_ENV)
23 #include "h/smp_lock.h"
25 #include <asm/uaccess.h>
28 * open and bind RX socket
30 struct osi_socket *rxk_NewSocket(short aport)
33 struct sockaddr_in myaddr;
37 code = sock_create(AF_INET, SOCK_DGRAM, IPPROTO_UDP, &sockp);
42 myaddr.sin_family = AF_INET;
43 myaddr.sin_addr.s_addr = htonl(INADDR_ANY);
44 myaddr.sin_port = aport;
45 code = sockp->ops->bind(sockp, (struct sockaddr*)&myaddr, sizeof(myaddr));
48 #if defined(AFS_LINUX24_ENV)
49 printk("sock_release(rx_socket) FIXME\n");
56 return (struct osi_socket*)sockp;
60 /* free socket allocated by osi_NetSocket */
61 int rxk_FreeSocket(register struct socket *asocket)
63 AFS_STATCNT(osi_FreeSocket);
74 int osi_NetSend(osi_socket sop, struct sockaddr_in *to,
75 struct iovec *iov, int iovcnt, afs_int32 size, int istack)
80 struct iovec tmpvec[RX_MAXWVECS+2];
82 if (iovcnt > RX_MAXWVECS+2) {
83 osi_Panic("Too many (%d) iovecs passed to osi_NetSend\n", iovcnt);
86 if (iovcnt <= 2) { /* avoid pointless uiomove */
87 tmpvec[0].iov_base = iov[0].iov_base;
88 tmpvec[0].iov_len = size;
92 memcpy(tmpvec, iov, iovcnt * sizeof(struct iovec));
93 msg.msg_iovlen = iovcnt;
97 msg.msg_namelen = sizeof(*to);
98 msg.msg_control = NULL;
99 msg.msg_controllen = 0;
103 code = sock_sendmsg(sop, &msg, size);
105 return (code<0) ? code : 0;
110 * OS dependent part of kernel RX listener thread.
113 * so socket to receive on, typically rx_socket
114 * from pointer to a sockaddr_in.
115 * iov array of iovecs to fill in.
116 * iovcnt how many iovecs there are.
117 * lengthp IN/OUT in: total space available in iovecs. out: size of read.
121 * error code (such as EINTER) if not
124 * Note that the maximum number of iovecs is 2 + RX_MAXWVECS. This is
125 * so we have a little space to look for packets larger than
128 int rxk_lastSocketError;
129 int rxk_nSocketErrors;
130 int osi_NetReceive(osi_socket so, struct sockaddr_in *from,
131 struct iovec *iov, int iovcnt, int *lengthp)
136 struct iovec tmpvec[RX_MAXWVECS+2];
137 struct socket *sop = (struct socket*)so;
139 if (iovcnt > RX_MAXWVECS+2) {
140 osi_Panic("Too many (%d) iovecs passed to osi_NetReceive\n", iovcnt);
142 memcpy(tmpvec, iov, iovcnt * sizeof(struct iovec));
144 msg.msg_iov = tmpvec;
145 msg.msg_iovlen = iovcnt;
146 msg.msg_control = NULL;
147 msg.msg_controllen = 0;
151 code = sock_recvmsg(sop, &msg, *lengthp, 0);
155 /* Clear the error before using the socket again.
156 * Oh joy, Linux has hidden header files as well. It appears we can
157 * simply call again and have it clear itself via sock_error().
159 #ifdef AFS_LINUX22_ENV
160 flush_signals(current); /* We don't want no stinkin' signals. */
162 current->signal = 0; /* We don't want no stinkin' signals. */
164 rxk_lastSocketError = code;
165 rxk_nSocketErrors ++ ;
175 void osi_StopListener(void)
177 extern int (*sys_killp)();
178 extern int rxk_ListenerPid;
180 while (rxk_ListenerPid) {
181 (void) (*sys_killp)(rxk_ListenerPid, SIGKILL);
182 afs_osi_Sleep(&rxk_ListenerPid);
184 sock_release(rx_socket);
188 #endif /* AFS_LINUX22_ENV */