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"
21 #include <linux/version.h>
22 #ifdef AFS_LINUX22_ENV
23 #include "rx/rx_kcommon.h"
24 #if defined(AFS_LINUX24_ENV)
25 #include "h/smp_lock.h"
27 #include <asm/uaccess.h>
30 * open and bind RX socket
33 rxk_NewSocket(short aport)
36 struct sockaddr_in myaddr;
40 code = sock_create(AF_INET, SOCK_DGRAM, IPPROTO_UDP, &sockp);
45 myaddr.sin_family = AF_INET;
46 myaddr.sin_addr.s_addr = htonl(INADDR_ANY);
47 myaddr.sin_port = aport;
49 sockp->ops->bind(sockp, (struct sockaddr *)&myaddr, sizeof(myaddr));
52 #if defined(AFS_LINUX24_ENV)
53 printk("sock_release(rx_socket) FIXME\n");
60 return (struct osi_socket *)sockp;
64 /* free socket allocated by osi_NetSocket */
66 rxk_FreeSocket(register struct socket *asocket)
68 AFS_STATCNT(osi_FreeSocket);
80 osi_NetSend(osi_socket sop, struct sockaddr_in *to, struct iovec *iov,
81 int iovcnt, afs_int32 size, int istack)
86 struct iovec tmpvec[RX_MAXWVECS + 2];
88 if (iovcnt > RX_MAXWVECS + 2) {
89 osi_Panic("Too many (%d) iovecs passed to osi_NetSend\n", iovcnt);
92 if (iovcnt <= 2) { /* avoid pointless uiomove */
93 tmpvec[0].iov_base = iov[0].iov_base;
94 tmpvec[0].iov_len = size;
97 memcpy(tmpvec, iov, iovcnt * sizeof(struct iovec));
98 msg.msg_iovlen = iovcnt;
100 msg.msg_iov = tmpvec;
102 msg.msg_namelen = sizeof(*to);
103 msg.msg_control = NULL;
104 msg.msg_controllen = 0;
108 code = sock_sendmsg(sop, &msg, size);
110 return (code < 0) ? code : 0;
115 * OS dependent part of kernel RX listener thread.
118 * so socket to receive on, typically rx_socket
119 * from pointer to a sockaddr_in.
120 * iov array of iovecs to fill in.
121 * iovcnt how many iovecs there are.
122 * lengthp IN/OUT in: total space available in iovecs. out: size of read.
126 * error code (such as EINTER) if not
129 * Note that the maximum number of iovecs is 2 + RX_MAXWVECS. This is
130 * so we have a little space to look for packets larger than
133 int rxk_lastSocketError;
134 int rxk_nSocketErrors;
136 osi_NetReceive(osi_socket so, struct sockaddr_in *from, struct iovec *iov,
137 int iovcnt, int *lengthp)
142 struct iovec tmpvec[RX_MAXWVECS + 2];
143 struct socket *sop = (struct socket *)so;
145 if (iovcnt > RX_MAXWVECS + 2) {
146 osi_Panic("Too many (%d) iovecs passed to osi_NetReceive\n", iovcnt);
148 memcpy(tmpvec, iov, iovcnt * sizeof(struct iovec));
150 msg.msg_iov = tmpvec;
151 msg.msg_iovlen = iovcnt;
152 msg.msg_control = NULL;
153 msg.msg_controllen = 0;
157 code = sock_recvmsg(sop, &msg, *lengthp, 0);
161 /* Clear the error before using the socket again.
162 * Oh joy, Linux has hidden header files as well. It appears we can
163 * simply call again and have it clear itself via sock_error().
165 #ifdef AFS_LINUX22_ENV
166 flush_signals(current); /* We don't want no stinkin' signals. */
168 current->signal = 0; /* We don't want no stinkin' signals. */
170 rxk_lastSocketError = code;
181 osi_StopListener(void)
183 struct task_struct *listener;
184 extern int rxk_ListenerPid;
186 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
187 read_lock(&tasklist_lock);
189 listener = find_task_by_pid(rxk_ListenerPid);
190 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
191 read_unlock(&tasklist_lock);
193 while (rxk_ListenerPid) {
194 struct task_struct *p;
196 flush_signals(listener);
197 force_sig(SIGKILL, listener);
198 afs_osi_Sleep(&rxk_ListenerPid);
200 sock_release(rx_socket);
204 #endif /* AFS_LINUX22_ENV */