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 #include <linux/version.h>
21 #ifdef AFS_LINUX22_ENV
22 #include "rx/rx_kcommon.h"
23 #if defined(AFS_LINUX24_ENV)
24 #include "h/smp_lock.h"
26 #include <asm/uaccess.h>
29 * open and bind RX socket
31 struct osi_socket *rxk_NewSocket(short aport)
34 struct sockaddr_in myaddr;
38 code = sock_create(AF_INET, SOCK_DGRAM, IPPROTO_UDP, &sockp);
43 myaddr.sin_family = AF_INET;
44 myaddr.sin_addr.s_addr = htonl(INADDR_ANY);
45 myaddr.sin_port = aport;
46 code = sockp->ops->bind(sockp, (struct sockaddr*)&myaddr, sizeof(myaddr));
49 #if defined(AFS_LINUX24_ENV)
50 printk("sock_release(rx_socket) FIXME\n");
57 return (struct osi_socket*)sockp;
61 /* free socket allocated by osi_NetSocket */
62 int rxk_FreeSocket(register struct socket *asocket)
64 AFS_STATCNT(osi_FreeSocket);
75 int osi_NetSend(osi_socket sop, struct sockaddr_in *to,
76 struct iovec *iov, int iovcnt, afs_int32 size, int istack)
81 struct iovec tmpvec[RX_MAXWVECS+2];
83 if (iovcnt > RX_MAXWVECS+2) {
84 osi_Panic("Too many (%d) iovecs passed to osi_NetSend\n", iovcnt);
87 if (iovcnt <= 2) { /* avoid pointless uiomove */
88 tmpvec[0].iov_base = iov[0].iov_base;
89 tmpvec[0].iov_len = size;
93 memcpy(tmpvec, iov, iovcnt * sizeof(struct iovec));
94 msg.msg_iovlen = iovcnt;
98 msg.msg_namelen = sizeof(*to);
99 msg.msg_control = NULL;
100 msg.msg_controllen = 0;
104 code = sock_sendmsg(sop, &msg, size);
106 return (code<0) ? code : 0;
111 * OS dependent part of kernel RX listener thread.
114 * so socket to receive on, typically rx_socket
115 * from pointer to a sockaddr_in.
116 * iov array of iovecs to fill in.
117 * iovcnt how many iovecs there are.
118 * lengthp IN/OUT in: total space available in iovecs. out: size of read.
122 * error code (such as EINTER) if not
125 * Note that the maximum number of iovecs is 2 + RX_MAXWVECS. This is
126 * so we have a little space to look for packets larger than
129 int rxk_lastSocketError;
130 int rxk_nSocketErrors;
131 int osi_NetReceive(osi_socket so, struct sockaddr_in *from,
132 struct iovec *iov, int iovcnt, int *lengthp)
137 struct iovec tmpvec[RX_MAXWVECS+2];
138 struct socket *sop = (struct socket*)so;
140 if (iovcnt > RX_MAXWVECS+2) {
141 osi_Panic("Too many (%d) iovecs passed to osi_NetReceive\n", iovcnt);
143 memcpy(tmpvec, iov, iovcnt * sizeof(struct iovec));
145 msg.msg_iov = tmpvec;
146 msg.msg_iovlen = iovcnt;
147 msg.msg_control = NULL;
148 msg.msg_controllen = 0;
152 code = sock_recvmsg(sop, &msg, *lengthp, 0);
156 /* Clear the error before using the socket again.
157 * Oh joy, Linux has hidden header files as well. It appears we can
158 * simply call again and have it clear itself via sock_error().
160 #ifdef AFS_LINUX22_ENV
161 flush_signals(current); /* We don't want no stinkin' signals. */
163 current->signal = 0; /* We don't want no stinkin' signals. */
165 rxk_lastSocketError = code;
166 rxk_nSocketErrors ++ ;
176 void osi_StopListener(void)
178 struct task_struct *listener;
179 extern int rxk_ListenerPid;
181 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
182 read_lock(&tasklist_lock);
184 listener = find_task_by_pid(rxk_ListenerPid);
185 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
186 read_unlock(&tasklist_lock);
188 while (rxk_ListenerPid) {
189 struct task_struct *p;
191 flush_signals(listener);
192 force_sig(SIGKILL, listener);
193 afs_osi_Sleep(&rxk_ListenerPid);
195 sock_release(rx_socket);
199 #endif /* AFS_LINUX22_ENV */