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ipx_input.c (111119) ipx_input.c (111888)
1/*
2 * Copyright (c) 1995, Mike Mitchell
3 * Copyright (c) 1984, 1985, 1986, 1987, 1993
4 * The Regents of the University of California. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:

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28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * @(#)ipx_input.c
35 *
1/*
2 * Copyright (c) 1995, Mike Mitchell
3 * Copyright (c) 1984, 1985, 1986, 1987, 1993
4 * The Regents of the University of California. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:

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28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * @(#)ipx_input.c
35 *
36 * $FreeBSD: head/sys/netipx/ipx_input.c 111119 2003-02-19 05:47:46Z imp $
36 * $FreeBSD: head/sys/netipx/ipx_input.c 111888 2003-03-04 23:19:55Z jlemon $
37 */
38
39#include <sys/param.h>
40#include <sys/systm.h>
41#include <sys/mbuf.h>
42#include <sys/protosw.h>
43#include <sys/socket.h>
44#include <sys/kernel.h>
45#include <sys/random.h>
46#include <sys/sysctl.h>
47
48#include <net/if.h>
49#include <net/route.h>
50#include <net/netisr.h>
37 */
38
39#include <sys/param.h>
40#include <sys/systm.h>
41#include <sys/mbuf.h>
42#include <sys/protosw.h>
43#include <sys/socket.h>
44#include <sys/kernel.h>
45#include <sys/random.h>
46#include <sys/sysctl.h>
47
48#include <net/if.h>
49#include <net/route.h>
50#include <net/netisr.h>
51#include <net/intrq.h>
52
53#include <netipx/ipx.h>
54#include <netipx/spx.h>
55#include <netipx/ipx_if.h>
56#include <netipx/ipx_pcb.h>
57#include <netipx/ipx_var.h>
58
59int ipxcksum = 0;

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82struct sockaddr_ipx ipx_netmask, ipx_hostmask;
83
84static u_short allones[] = {-1, -1, -1};
85
86struct ipxpcb ipxpcb;
87struct ipxpcb ipxrawpcb;
88
89static int ipxqmaxlen = IFQ_MAXLEN;
51
52#include <netipx/ipx.h>
53#include <netipx/spx.h>
54#include <netipx/ipx_if.h>
55#include <netipx/ipx_pcb.h>
56#include <netipx/ipx_var.h>
57
58int ipxcksum = 0;

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81struct sockaddr_ipx ipx_netmask, ipx_hostmask;
82
83static u_short allones[] = {-1, -1, -1};
84
85struct ipxpcb ipxpcb;
86struct ipxpcb ipxrawpcb;
87
88static int ipxqmaxlen = IFQ_MAXLEN;
89static struct ifqueue ipxintrq;
90
91long ipx_pexseq;
92
93static int ipx_do_route(struct ipx_addr *src, struct route *ro);
94static void ipx_undo_route(struct route *ro);
95static void ipx_forward(struct mbuf *m);
90
91long ipx_pexseq;
92
93static int ipx_do_route(struct ipx_addr *src, struct route *ro);
94static void ipx_undo_route(struct route *ro);
95static void ipx_forward(struct mbuf *m);
96static void ipxintr(struct mbuf *m);
96
97/*
98 * IPX initialization.
99 */
100
101void
102ipx_init()
103{
104 ipx_broadnet = *(union ipx_net *)allones;
105 ipx_broadhost = *(union ipx_host *)allones;
106
107 read_random(&ipx_pexseq, sizeof ipx_pexseq);
97
98/*
99 * IPX initialization.
100 */
101
102void
103ipx_init()
104{
105 ipx_broadnet = *(union ipx_net *)allones;
106 ipx_broadhost = *(union ipx_host *)allones;
107
108 read_random(&ipx_pexseq, sizeof ipx_pexseq);
108 ipxintrq.ifq_maxlen = ipxqmaxlen;
109 mtx_init(&ipxintrq.ifq_mtx, "ipx_inq", NULL, MTX_DEF);
110 ipxintrq_present = 1;
111 ipxpcb.ipxp_next = ipxpcb.ipxp_prev = &ipxpcb;
112 ipxrawpcb.ipxp_next = ipxrawpcb.ipxp_prev = &ipxrawpcb;
113
114 ipx_netmask.sipx_len = 6;
115 ipx_netmask.sipx_addr.x_net = ipx_broadnet;
116
117 ipx_hostmask.sipx_len = 12;
118 ipx_hostmask.sipx_addr.x_net = ipx_broadnet;
119 ipx_hostmask.sipx_addr.x_host = ipx_broadhost;
120
109 ipxpcb.ipxp_next = ipxpcb.ipxp_prev = &ipxpcb;
110 ipxrawpcb.ipxp_next = ipxrawpcb.ipxp_prev = &ipxrawpcb;
111
112 ipx_netmask.sipx_len = 6;
113 ipx_netmask.sipx_addr.x_net = ipx_broadnet;
114
115 ipx_hostmask.sipx_len = 12;
116 ipx_hostmask.sipx_addr.x_net = ipx_broadnet;
117 ipx_hostmask.sipx_addr.x_host = ipx_broadhost;
118
121 register_netisr(NETISR_IPX, ipxintr);
119 ipxintrq.ifq_maxlen = ipxqmaxlen;
120 mtx_init(&ipxintrq.ifq_mtx, "ipx_inq", NULL, MTX_DEF);
121 netisr_register(NETISR_IPX, ipxintr, &ipxintrq);
122}
123
124/*
125 * IPX input routine. Pass to next level.
126 */
122}
123
124/*
125 * IPX input routine. Pass to next level.
126 */
127void
128ipxintr()
127static void
128ipxintr(struct mbuf *m)
129{
130 register struct ipx *ipx;
129{
130 register struct ipx *ipx;
131 register struct mbuf *m;
132 register struct ipxpcb *ipxp;
133 struct ipx_ifaddr *ia;
131 register struct ipxpcb *ipxp;
132 struct ipx_ifaddr *ia;
134 int len, s;
133 int len;
135
134
136next:
137 /*
135 /*
138 * Get next datagram off input queue and get IPX header
139 * in first mbuf.
140 */
141 s = splimp();
142 IF_DEQUEUE(&ipxintrq, m);
143 splx(s);
144 if (m == NULL)
145 return;
146 /*
147 * If no IPX addresses have been set yet but the interfaces
148 * are receiving, can't do anything with incoming packets yet.
149 */
150 if (ipx_ifaddr == NULL)
151 goto bad;
152
153 ipxstat.ipxs_total++;
154
155 if ((m->m_flags & M_EXT || m->m_len < sizeof(struct ipx)) &&
156 (m = m_pullup(m, sizeof(struct ipx))) == 0) {
157 ipxstat.ipxs_toosmall++;
136 * If no IPX addresses have been set yet but the interfaces
137 * are receiving, can't do anything with incoming packets yet.
138 */
139 if (ipx_ifaddr == NULL)
140 goto bad;
141
142 ipxstat.ipxs_total++;
143
144 if ((m->m_flags & M_EXT || m->m_len < sizeof(struct ipx)) &&
145 (m = m_pullup(m, sizeof(struct ipx))) == 0) {
146 ipxstat.ipxs_toosmall++;
158 goto next;
147 return;
159 }
160
161 /*
162 * Give any raw listeners a crack at the packet
163 */
164 for (ipxp = ipxrawpcb.ipxp_next; ipxp != &ipxrawpcb;
165 ipxp = ipxp->ipxp_next) {
166 struct mbuf *m1 = m_copy(m, 0, (int)M_COPYALL);

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196
197 /*
198 * Propagated (Netbios) packets (type 20) has to be handled
199 * different. :-(
200 */
201 if (ipx->ipx_pt == IPXPROTO_NETBIOS) {
202 if (ipxnetbios) {
203 ipx_output_type20(m);
148 }
149
150 /*
151 * Give any raw listeners a crack at the packet
152 */
153 for (ipxp = ipxrawpcb.ipxp_next; ipxp != &ipxrawpcb;
154 ipxp = ipxp->ipxp_next) {
155 struct mbuf *m1 = m_copy(m, 0, (int)M_COPYALL);

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185
186 /*
187 * Propagated (Netbios) packets (type 20) has to be handled
188 * different. :-(
189 */
190 if (ipx->ipx_pt == IPXPROTO_NETBIOS) {
191 if (ipxnetbios) {
192 ipx_output_type20(m);
204 goto next;
193 return;
205 } else
206 goto bad;
207 }
208
209 /*
210 * Is this a directed broadcast?
211 */
212 if (ipx_hosteqnh(ipx_broadhost,ipx->ipx_dna.x_host)) {

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231 * by physically broadcasted.
232 * Any very old packets eaten without forwarding
233 * would die anyway.
234 *
235 * Suggestion of Bill Nesheim, Cornell U.
236 */
237 if (ipx->ipx_tc < IPX_MAXHOPS) {
238 ipx_forward(m);
194 } else
195 goto bad;
196 }
197
198 /*
199 * Is this a directed broadcast?
200 */
201 if (ipx_hosteqnh(ipx_broadhost,ipx->ipx_dna.x_host)) {

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220 * by physically broadcasted.
221 * Any very old packets eaten without forwarding
222 * would die anyway.
223 *
224 * Suggestion of Bill Nesheim, Cornell U.
225 */
226 if (ipx->ipx_tc < IPX_MAXHOPS) {
227 ipx_forward(m);
239 goto next;
228 return;
240 }
241 }
242 /*
243 * Is this our packet? If not, forward.
244 */
245 } else {
246 for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
247 if (ipx_hosteq(ipx->ipx_dna, ia->ia_addr.sipx_addr) &&
248 (ipx_neteq(ipx->ipx_dna, ia->ia_addr.sipx_addr) ||
249 ipx_neteqnn(ipx->ipx_dna.x_net, ipx_zeronet)))
250 break;
251
252 if (ia == NULL) {
253 ipx_forward(m);
229 }
230 }
231 /*
232 * Is this our packet? If not, forward.
233 */
234 } else {
235 for (ia = ipx_ifaddr; ia != NULL; ia = ia->ia_next)
236 if (ipx_hosteq(ipx->ipx_dna, ia->ia_addr.sipx_addr) &&
237 (ipx_neteq(ipx->ipx_dna, ia->ia_addr.sipx_addr) ||
238 ipx_neteqnn(ipx->ipx_dna.x_net, ipx_zeronet)))
239 break;
240
241 if (ia == NULL) {
242 ipx_forward(m);
254 goto next;
243 return;
255 }
256 }
257ours:
258 /*
259 * Locate pcb for datagram.
260 */
261 ipxp = ipx_pcblookup(&ipx->ipx_sna, ipx->ipx_dna.x_port, IPX_WILDCARD);
262 /*
263 * Switch out to protocol's input routine.
264 */
265 if (ipxp != NULL) {
266 ipxstat.ipxs_delivered++;
267 if ((ipxp->ipxp_flags & IPXP_ALL_PACKETS) == 0)
268 switch (ipx->ipx_pt) {
244 }
245 }
246ours:
247 /*
248 * Locate pcb for datagram.
249 */
250 ipxp = ipx_pcblookup(&ipx->ipx_sna, ipx->ipx_dna.x_port, IPX_WILDCARD);
251 /*
252 * Switch out to protocol's input routine.
253 */
254 if (ipxp != NULL) {
255 ipxstat.ipxs_delivered++;
256 if ((ipxp->ipxp_flags & IPXP_ALL_PACKETS) == 0)
257 switch (ipx->ipx_pt) {
269
270 case IPXPROTO_SPX:
271 spx_input(m, ipxp);
272 goto next;
258 case IPXPROTO_SPX:
259 spx_input(m, ipxp);
260 return;
273 }
274 ipx_input(m, ipxp);
275 } else
276 goto bad;
277
261 }
262 ipx_input(m, ipxp);
263 } else
264 goto bad;
265
278 goto next;
266 return;
279
280bad:
281 m_freem(m);
267
268bad:
269 m_freem(m);
282 goto next;
283}
284
285void
286ipx_ctlinput(cmd, arg_as_sa, dummy)
287 int cmd;
288 struct sockaddr *arg_as_sa; /* XXX should be swapped with dummy */
289 void *dummy;
290{

--- 221 unchanged lines hidden --- 		270}
271
272void
273ipx_ctlinput(cmd, arg_as_sa, dummy)
274 int cmd;
275 struct sockaddr *arg_as_sa; /* XXX should be swapped with dummy */
276 void *dummy;
277{

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