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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /*
23: * Mach Operating System
24: * Copyright (c) 1987 Carnegie-Mellon University
25: * All rights reserved. The CMU software License Agreement specifies
26: * the terms and conditions for use and redistribution.
27: */
28:
29: /* HISTORY
30: * 18-May-90 Avadis Tevanian (avie) at NeXT
31: * Changed to use sensible priorities (higher numbers -> higher pri).
32: *
33: * 1-Feb-88 David Golub (dbg) at Carnegie-Mellon University
34: * Goofed... netisr thread must run at splnet, because the routines
35: * it calls expect to be called from the softnet interrupt (at
36: * splnet).
37: *
38: * 19-Nov-87 David Golub (dbg) at Carnegie-Mellon University
39: * Created.
40: *
41: */
42:
43: /*
44: * netisr.c
45: *
46: * Kernel thread for network code.
47: */
48:
49:
50: #include <meta_features.h>
51: #include <machine/spl.h>
52: #include <net/netisr.h>
53:
54: #include <kern/thread.h>
55: #include <kern/processor.h>
56:
57: volatile int netisr;
58: int soft_net_wakeup;
59:
60: void netisr_thread_continue(void)
61: {
62: /*
63: * All routines this thread calls expect to be called
64: * at splnet.
65: */
66:
67: while (1) {
68: (void) splnet();
69:
70: while (netisr != 0) {
71: #ifdef NIMP
72: #if NIMP > 0
73: if (netisr & (1<<NETISR_IMP)){
74: netisr &= ~(1<<NETISR_IMP);
75: impintr();
76: }
77: #endif /* NIMP > 0 */
78: #endif /* NIMP */
79:
80: #if INET
81: if (netisr & (1<<NETISR_IP)){
82: void ipintr(void);
83:
84: netisr &= ~(1<<NETISR_IP);
85: ipintr();
86: }
87: if (netisr & (1<<NETISR_ARP)) {
88: void arpintr(void);
89:
90: netisr &= ~(1<<NETISR_ARP);
91: arpintr();
92: }
93: #endif /* INET */
94:
95: if (netisr & (1<<NETISR_BLUE)){
96: void blue_notify(void);
97:
98: netisr &= ~(1<<NETISR_BLUE);
99: blue_notify();
100: }
101:
102: #if ISO
103: if (netisr & (1<<NETISR_ISO)) {
104: netisr &= ~(1<<NETISR_ISO);
105: isointr();
106: }
107: #endif /* ISO */
108:
109: #if CCITT
110: if (netisr & (1<<NETISR_CCITT)) {
111: netisr &= ~(1<<NETISR_CCITT);
112: ccittintr();
113: }
114: #endif /* CCITT */
115:
116: #if NS
117: if (netisr & (1<<NETISR_NS)){
118: netisr &= ~(1<<NETISR_NS);
119: nsintr();
120: }
121: #endif /* NS */
122:
123: #if NETAT
124: if (netisr & (1<<NETISR_APPLETALK)){
125: void atalkintr(void);
126:
127: netisr &= ~(1<<NETISR_APPLETALK);
128: atalkintr();
129: }
130: #endif /* NETAT */
131: }
132: assert_wait(&soft_net_wakeup, THREAD_UNINT);
133: thread_block(netisr_thread_continue);
134: /* NOTREACHED */
135: }
136: }
137:
138: void netisr_thread(void)
139: {
140: register thread_t self = current_thread();
141: extern void stack_privilege(thread_t thread);
142:
143: /*
144: * Make sure that this thread
145: * always has a kernel stack, and
146: * bind it to the master cpu.
147: */
148: stack_privilege(self);
149: #if NCPUS > 1
150: thread_bind(self, master_processor);
151: #endif
152: netisr_thread_continue();
153: }
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