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 #ifdef LINUX_KERNEL_IS_SELINUX
41 code = sock_create(AF_INET, SOCK_DGRAM, IPPROTO_UDP, &sockp, 0);
43 code = sock_create(AF_INET, SOCK_DGRAM, IPPROTO_UDP, &sockp);
49 myaddr.sin_family = AF_INET;
50 myaddr.sin_addr.s_addr = ahost;
51 myaddr.sin_port = aport;
53 sockp->ops->bind(sockp, (struct sockaddr *)&myaddr, sizeof(myaddr));
56 #if defined(AFS_LINUX24_ENV)
57 printk("sock_release(rx_socket) FIXME\n");
64 return (struct osi_socket *)sockp;
68 rxk_NewSocket(short aport)
70 return rxk_NewSocketHost(htonl(INADDR_ANY), aport);
73 /* free socket allocated by osi_NetSocket */
75 rxk_FreeSocket(register struct socket *asocket)
77 AFS_STATCNT(osi_FreeSocket);
89 osi_NetSend(osi_socket sop, struct sockaddr_in *to, struct iovec *iov,
90 int iovcnt, afs_int32 size, int istack)
95 struct iovec tmpvec[RX_MAXWVECS + 2];
97 if (iovcnt > RX_MAXWVECS + 2) {
98 osi_Panic("Too many (%d) iovecs passed to osi_NetSend\n", iovcnt);
101 if (iovcnt <= 2) { /* avoid pointless uiomove */
102 tmpvec[0].iov_base = iov[0].iov_base;
103 tmpvec[0].iov_len = size;
106 memcpy(tmpvec, iov, iovcnt * sizeof(struct iovec));
107 msg.msg_iovlen = iovcnt;
109 msg.msg_iov = tmpvec;
111 msg.msg_namelen = sizeof(*to);
112 msg.msg_control = NULL;
113 msg.msg_controllen = 0;
117 code = sock_sendmsg(sop, &msg, size);
119 return (code < 0) ? code : 0;
124 * OS dependent part of kernel RX listener thread.
127 * so socket to receive on, typically rx_socket
128 * from pointer to a sockaddr_in.
129 * iov array of iovecs to fill in.
130 * iovcnt how many iovecs there are.
131 * lengthp IN/OUT in: total space available in iovecs. out: size of read.
135 * error code (such as EINTER) if not
138 * Note that the maximum number of iovecs is 2 + RX_MAXWVECS. This is
139 * so we have a little space to look for packets larger than
142 int rxk_lastSocketError;
143 int rxk_nSocketErrors;
145 osi_NetReceive(osi_socket so, struct sockaddr_in *from, struct iovec *iov,
146 int iovcnt, int *lengthp)
151 struct iovec tmpvec[RX_MAXWVECS + 2];
152 struct socket *sop = (struct socket *)so;
154 if (iovcnt > RX_MAXWVECS + 2) {
155 osi_Panic("Too many (%d) iovecs passed to osi_NetReceive\n", iovcnt);
157 memcpy(tmpvec, iov, iovcnt * sizeof(struct iovec));
159 msg.msg_iov = tmpvec;
160 msg.msg_iovlen = iovcnt;
161 msg.msg_control = NULL;
162 msg.msg_controllen = 0;
166 code = sock_recvmsg(sop, &msg, *lengthp, 0);
170 /* Clear the error before using the socket again.
171 * Oh joy, Linux has hidden header files as well. It appears we can
172 * simply call again and have it clear itself via sock_error().
174 #ifdef AFS_LINUX22_ENV
175 flush_signals(current); /* We don't want no stinkin' signals. */
177 current->signal = 0; /* We don't want no stinkin' signals. */
179 rxk_lastSocketError = code;
190 osi_StopListener(void)
192 struct task_struct *listener;
193 extern int rxk_ListenerPid;
195 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
196 read_lock(&tasklist_lock);
198 listener = find_task_by_pid(rxk_ListenerPid);
199 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
200 read_unlock(&tasklist_lock);
202 while (rxk_ListenerPid) {
203 struct task_struct *p;
205 flush_signals(listener);
206 force_sig(SIGKILL, listener);
207 afs_osi_Sleep(&rxk_ListenerPid);
209 sock_release(rx_socket);
213 #endif /* AFS_LINUX22_ENV */