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_NewSocketHost(afs_uint32 ahost, short aport)
36 struct sockaddr_in myaddr;
40 /* We need a better test for this. if you need it back, tell us
43 #ifdef LINUX_KERNEL_SOCK_CREATE_V
44 code = sock_create(AF_INET, SOCK_DGRAM, IPPROTO_UDP, &sockp, 0);
46 code = sock_create(AF_INET, SOCK_DGRAM, IPPROTO_UDP, &sockp);
52 myaddr.sin_family = AF_INET;
53 myaddr.sin_addr.s_addr = ahost;
54 myaddr.sin_port = aport;
56 sockp->ops->bind(sockp, (struct sockaddr *)&myaddr, sizeof(myaddr));
59 #if defined(AFS_LINUX24_ENV)
60 printk("sock_release(rx_socket) FIXME\n");
67 return (struct osi_socket *)sockp;
71 rxk_NewSocket(short aport)
73 return rxk_NewSocketHost(htonl(INADDR_ANY), aport);
76 /* free socket allocated by osi_NetSocket */
78 rxk_FreeSocket(register struct socket *asocket)
80 AFS_STATCNT(osi_FreeSocket);
92 osi_NetSend(osi_socket sop, struct sockaddr_in *to, struct iovec *iov,
93 int iovcnt, afs_int32 size, int istack)
98 struct iovec tmpvec[RX_MAXWVECS + 2];
100 if (iovcnt > RX_MAXWVECS + 2) {
101 osi_Panic("Too many (%d) iovecs passed to osi_NetSend\n", iovcnt);
104 if (iovcnt <= 2) { /* avoid pointless uiomove */
105 tmpvec[0].iov_base = iov[0].iov_base;
106 tmpvec[0].iov_len = size;
109 memcpy(tmpvec, iov, iovcnt * sizeof(struct iovec));
110 msg.msg_iovlen = iovcnt;
112 msg.msg_iov = tmpvec;
114 msg.msg_namelen = sizeof(*to);
115 msg.msg_control = NULL;
116 msg.msg_controllen = 0;
120 code = sock_sendmsg(sop, &msg, size);
122 return (code < 0) ? code : 0;
127 * OS dependent part of kernel RX listener thread.
130 * so socket to receive on, typically rx_socket
131 * from pointer to a sockaddr_in.
132 * iov array of iovecs to fill in.
133 * iovcnt how many iovecs there are.
134 * lengthp IN/OUT in: total space available in iovecs. out: size of read.
138 * error code (such as EINTER) if not
141 * Note that the maximum number of iovecs is 2 + RX_MAXWVECS. This is
142 * so we have a little space to look for packets larger than
145 int rxk_lastSocketError;
146 int rxk_nSocketErrors;
148 osi_NetReceive(osi_socket so, struct sockaddr_in *from, struct iovec *iov,
149 int iovcnt, int *lengthp)
154 struct iovec tmpvec[RX_MAXWVECS + 2];
155 struct socket *sop = (struct socket *)so;
157 if (iovcnt > RX_MAXWVECS + 2) {
158 osi_Panic("Too many (%d) iovecs passed to osi_NetReceive\n", iovcnt);
160 memcpy(tmpvec, iov, iovcnt * sizeof(struct iovec));
162 msg.msg_iov = tmpvec;
163 msg.msg_iovlen = iovcnt;
164 msg.msg_control = NULL;
165 msg.msg_controllen = 0;
169 code = sock_recvmsg(sop, &msg, *lengthp, 0);
173 /* Clear the error before using the socket again.
174 * Oh joy, Linux has hidden header files as well. It appears we can
175 * simply call again and have it clear itself via sock_error().
177 #ifdef AFS_LINUX22_ENV
178 flush_signals(current); /* We don't want no stinkin' signals. */
180 current->signal = 0; /* We don't want no stinkin' signals. */
182 rxk_lastSocketError = code;
193 osi_StopListener(void)
195 struct task_struct *listener;
196 extern int rxk_ListenerPid;
198 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
199 read_lock(&tasklist_lock);
201 listener = find_task_by_pid(rxk_ListenerPid);
202 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
203 read_unlock(&tasklist_lock);
205 while (rxk_ListenerPid) {
206 struct task_struct *p;
208 flush_signals(listener);
209 force_sig(SIGKILL, listener);
210 afs_osi_Sleep(&rxk_ListenerPid);
212 sock_release(rx_socket);
216 #endif /* AFS_LINUX22_ENV */