IPV6 - Attempt to fix tcp46 compatibility listen sockets
[dragonfly.git] / sys / netinet / ip_demux.c
CommitLineData
bf82f9b7 1/*
380d2ea3
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2 * Copyright (c) 2003, 2004 Jeffrey M. Hsu. All rights reserved.
3 * Copyright (c) 2003, 2004 The DragonFly Project. All rights reserved.
f23061d4 4 *
380d2ea3
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5 * This code is derived from software contributed to The DragonFly Project
6 * by Jeffrey M. Hsu.
f23061d4 7 *
380d2ea3
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8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of The DragonFly Project nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific, prior written permission.
f23061d4 19 *
380d2ea3
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20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
30 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
bf82f9b7 32 *
14572273 33 * $DragonFly: src/sys/netinet/ip_demux.c,v 1.45 2008/11/11 10:46:58 sephe Exp $
bf82f9b7
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34 */
35
36#include "opt_inet.h"
e99d9a39 37#include "opt_rss.h"
bf82f9b7
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38
39#include <sys/param.h>
40#include <sys/systm.h>
41#include <sys/kernel.h>
42#include <sys/socket.h>
43#include <sys/socketvar.h>
44#include <sys/thread.h>
45#include <sys/sysctl.h>
2b57d013 46#include <sys/globaldata.h>
bf82f9b7
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47
48#include <net/if.h>
49#include <net/netisr.h>
6d5eef1e
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50#ifdef RSS
51#include <net/toeplitz2.h>
52#endif
bf82f9b7
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53
54#include <netinet/in_systm.h>
55#include <netinet/in.h>
56#include <netinet/in_var.h>
57#include <netinet/in_pcb.h>
58#include <netinet/ip.h>
59#include <netinet/ip_var.h>
60#include <netinet/tcp.h>
61#include <netinet/tcpip.h>
62#include <netinet/tcp_var.h>
63#include <netinet/udp.h>
64#include <netinet/udp_var.h>
65
66extern struct thread netisr_cpu[];
92db3805 67extern int udp_mpsafe_thread;
bf82f9b7
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68
69static struct thread tcp_thread[MAXCPU];
70static struct thread udp_thread[MAXCPU];
71
6d5eef1e
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72#ifndef RSS
73
9eeaa8a9 74static __inline int
e0b7863e
JH
75INP_MPORT_HASH(in_addr_t faddr, in_addr_t laddr,
76 in_port_t fport, in_port_t lport)
bf82f9b7 77{
a00e7525
JH
78 /*
79 * Use low order bytes.
a00e7525 80 */
e3d4c971 81
a00e7525 82#if (BYTE_ORDER == LITTLE_ENDIAN)
e3d4c971 83 KASSERT(ncpus2 < 256, ("need different hash function")); /* XXX JH */
e0b7863e 84 return (((faddr >> 24) ^ (fport >> 8) ^ (laddr >> 24) ^ (lport >> 8)) &
a00e7525
JH
85 ncpus2_mask);
86#else
e0b7863e 87 return ((faddr ^ fport ^ laddr ^ lport) & ncpus2_mask);
a00e7525 88#endif
bf82f9b7
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89}
90
6d5eef1e
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91#endif /* !RSS */
92
f861aec9
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93static __inline int
94INP_MPORT_HASH_UDP(in_addr_t faddr, in_addr_t laddr,
95 in_port_t fport, in_port_t lport)
96{
6d5eef1e 97#ifndef RSS
f861aec9 98 return INP_MPORT_HASH(faddr, laddr, fport, lport);
6d5eef1e 99#else
b73d4152 100 return toeplitz_hash(toeplitz_rawhash_addr(faddr, laddr));
6d5eef1e 101#endif
f861aec9
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102}
103
104static __inline int
105INP_MPORT_HASH_TCP(in_addr_t faddr, in_addr_t laddr,
106 in_port_t fport, in_port_t lport)
107{
6d5eef1e 108#ifndef RSS
f861aec9 109 return INP_MPORT_HASH(faddr, laddr, fport, lport);
6d5eef1e 110#else
b73d4152
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111 return toeplitz_hash(
112 toeplitz_rawhash_addrport(faddr, laddr, fport, lport));
6d5eef1e 113#endif
f861aec9
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114}
115
e9f5b82f
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116/*
117 * If the packet is a valid IP datagram, upon returning of this function
118 * following things are promised:
119 *
120 * o IP header (including any possible IP options) is in one mbuf (m_len).
121 * o IP header length is not less than the minimum (sizeof(struct ip)).
122 * o IP total length is not less than IP header length.
9b161cc2
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123 * o IP datagram resides completely in the mbuf chain,
124 * i.e. pkthdr.len >= IP total length.
e9f5b82f
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125 *
126 * If the packet is a UDP datagram,
127 * o IP header (including any possible IP options) and UDP header are in
128 * one mbuf (m_len).
129 * o IP total length is not less than (IP header length + UDP header length).
130 *
131 * If the packet is a TCP segment,
132 * o IP header (including any possible IP options) and TCP header (including
133 * any possible TCP options) are in one mbuf (m_len).
134 * o TCP header length is not less than the minimum (sizeof(struct tcphdr)).
135 * o IP total length is not less than (IP header length + TCP header length).
136 */
1e316d14
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137boolean_t
138ip_lengthcheck(struct mbuf **mp)
bf82f9b7 139{
1e316d14 140 struct mbuf *m = *mp;
55d829f8 141 struct ip *ip;
1e316d14 142 int iphlen, iplen;
bf82f9b7 143 struct tcphdr *th;
55d829f8 144 int thoff; /* TCP data offset */
bf82f9b7 145
ead1d3cb 146 /* The packet must be at least the size of an IP header. */
55d829f8
JH
147 if (m->m_pkthdr.len < sizeof(struct ip)) {
148 ipstat.ips_tooshort++;
dd4df7e9 149 goto fail;
55d829f8
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150 }
151
ead1d3cb
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152 /* The fixed IP header must reside completely in the first mbuf. */
153 if (m->m_len < sizeof(struct ip)) {
154 m = m_pullup(m, sizeof(struct ip));
155 if (m == NULL) {
156 ipstat.ips_toosmall++;
dd4df7e9 157 goto fail;
ead1d3cb 158 }
bf82f9b7 159 }
ead1d3cb 160
55d829f8
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161 ip = mtod(m, struct ip *);
162
ead1d3cb 163 /* Bound check the packet's stated IP header length. */
9eeaa8a9 164 iphlen = ip->ip_hl << 2;
9babcab8
JH
165 if (iphlen < sizeof(struct ip)) { /* minimum header length */
166 ipstat.ips_badhlen++;
dd4df7e9 167 goto fail;
9babcab8 168 }
ead1d3cb
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169
170 /* The full IP header must reside completely in the one mbuf. */
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171 if (m->m_len < iphlen) {
172 m = m_pullup(m, iphlen);
173 if (m == NULL) {
174 ipstat.ips_badhlen++;
dd4df7e9 175 goto fail;
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176 }
177 ip = mtod(m, struct ip *);
178 }
179
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180 iplen = ntohs(ip->ip_len);
181
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182 /*
183 * Check that the amount of data in the buffers is as
184 * at least much as the IP header would have us expect.
185 */
186 if (m->m_pkthdr.len < iplen) {
187 ipstat.ips_tooshort++;
188 goto fail;
189 }
190
ead1d3cb
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191 /*
192 * Fragments other than the first fragment don't have much
193 * length information.
194 */
195 if (ntohs(ip->ip_off) & IP_OFFMASK)
196 goto ipcheckonly;
197
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198 /*
199 * The TCP/IP or UDP/IP header must be entirely contained within
200 * the first fragment of a packet. Packet filters will break if they
201 * aren't.
ee7990a0
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202 *
203 * Since the packet will be trimmed to ip_len we must also make sure
204 * the potentially trimmed down length is still sufficient to hold
205 * the header(s).
b01ae44a 206 */
ead1d3cb
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207 switch (ip->ip_p) {
208 case IPPROTO_TCP:
209 if (iplen < iphlen + sizeof(struct tcphdr)) {
210 ++tcpstat.tcps_rcvshort;
dd4df7e9 211 goto fail;
ead1d3cb
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212 }
213 if (m->m_len < iphlen + sizeof(struct tcphdr)) {
214 m = m_pullup(m, iphlen + sizeof(struct tcphdr));
215 if (m == NULL) {
216 tcpstat.tcps_rcvshort++;
dd4df7e9 217 goto fail;
ee7990a0 218 }
ead1d3cb 219 ip = mtod(m, struct ip *);
b01ae44a 220 }
9eeaa8a9 221 th = (struct tcphdr *)((caddr_t)ip + iphlen);
55d829f8 222 thoff = th->th_off << 2;
096deca3 223 if (thoff < sizeof(struct tcphdr) ||
cd5e5855 224 thoff + iphlen > ntohs(ip->ip_len)) {
9eeaa8a9 225 tcpstat.tcps_rcvbadoff++;
dd4df7e9 226 goto fail;
9eeaa8a9 227 }
55d829f8
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228 if (m->m_len < iphlen + thoff) {
229 m = m_pullup(m, iphlen + thoff);
230 if (m == NULL) {
231 tcpstat.tcps_rcvshort++;
dd4df7e9 232 goto fail;
55d829f8 233 }
bf82f9b7 234 }
1e316d14 235 break;
ead1d3cb
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236 case IPPROTO_UDP:
237 if (iplen < iphlen + sizeof(struct udphdr)) {
238 ++udpstat.udps_hdrops;
dd4df7e9 239 goto fail;
ead1d3cb
JH
240 }
241 if (m->m_len < iphlen + sizeof(struct udphdr)) {
242 m = m_pullup(m, iphlen + sizeof(struct udphdr));
243 if (m == NULL) {
244 udpstat.udps_hdrops++;
dd4df7e9 245 goto fail;
ead1d3cb
JH
246 }
247 }
248 break;
249 default:
250ipcheckonly:
251 if (iplen < iphlen) {
252 ++ipstat.ips_badlen;
dd4df7e9 253 goto fail;
ead1d3cb
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254 }
255 break;
1e316d14
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256 }
257
8697599b 258 m->m_flags |= M_LENCHECKED;
1e316d14
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259 *mp = m;
260 return TRUE;
dd4df7e9
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261
262fail:
263 if (m != NULL)
264 m_freem(m);
265 *mp = NULL;
266 return FALSE;
1e316d14 267}
bf82f9b7 268
1e316d14
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269/*
270 * Map a packet to a protocol processing thread and return the thread's port.
271 * If an error occurs, the passed mbuf will be freed, *mptr will be set
272 * to NULL, and NULL will be returned. If no error occurs, the passed mbuf
273 * may be modified and a port pointer will be returned.
274 */
275lwkt_port_t
934c6849 276ip_mport(struct mbuf **mptr, int dir)
1e316d14
JH
277{
278 struct ip *ip;
279 int iphlen;
280 struct tcphdr *th;
281 struct udphdr *uh;
282 struct mbuf *m;
283 int thoff; /* TCP data offset */
284 lwkt_port_t port;
285 int cpu;
286
dd4df7e9 287 if (!ip_lengthcheck(mptr))
1e316d14 288 return (NULL);
1e316d14
JH
289
290 m = *mptr;
291 ip = mtod(m, struct ip *);
292 iphlen = ip->ip_hl << 2;
293
294 /*
295 * XXX generic packet handling defrag on CPU 0 for now.
296 */
97a43e72
SZ
297 if (ntohs(ip->ip_off) & (IP_MF | IP_OFFMASK)) {
298 cpu = 0;
299 port = &netisr_cpu[cpu].td_msgport;
300 goto back;
301 }
1e316d14
JH
302
303 switch (ip->ip_p) {
304 case IPPROTO_TCP:
305 th = (struct tcphdr *)((caddr_t)ip + iphlen);
306 thoff = th->th_off << 2;
f861aec9 307 cpu = INP_MPORT_HASH_TCP(ip->ip_src.s_addr, ip->ip_dst.s_addr,
9eeaa8a9
JH
308 th->th_sport, th->th_dport);
309 port = &tcp_thread[cpu].td_msgport;
bf82f9b7 310 break;
f861aec9 311
bf82f9b7 312 case IPPROTO_UDP:
9eeaa8a9
JH
313 uh = (struct udphdr *)((caddr_t)ip + iphlen);
314
e99d9a39 315#ifndef RSS
9eeaa8a9 316 if (IN_MULTICAST(ntohl(ip->ip_dst.s_addr)) ||
934c6849
SZ
317 (dir == IP_MPORT_IN &&
318 in_broadcast(ip->ip_dst, m->m_pkthdr.rcvif))) {
9eeaa8a9 319 cpu = 0;
e99d9a39
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320 } else
321#endif
322 {
f861aec9 323 cpu = INP_MPORT_HASH_UDP(ip->ip_src.s_addr,
9eeaa8a9
JH
324 ip->ip_dst.s_addr, uh->uh_sport, uh->uh_dport);
325 }
326 port = &udp_thread[cpu].td_msgport;
bf82f9b7 327 break;
f861aec9 328
bf82f9b7 329 default:
97a43e72
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330 cpu = 0;
331 port = &netisr_cpu[cpu].td_msgport;
bf82f9b7
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332 break;
333 }
97a43e72
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334back:
335 m->m_flags |= M_HASH;
336 m->m_pkthdr.hash = cpu;
bf82f9b7
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337 return (port);
338}
339
934c6849
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340lwkt_port_t
341ip_mport_in(struct mbuf **mptr)
342{
343 return ip_mport(mptr, IP_MPORT_IN);
344}
345
8a5c0ed6
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346/*
347 * Map a packet to a protocol processing thread and return the thread's port.
348 * Unlike ip_mport(), the packet content is not accessed. The packet info
349 * (pi) and the hash of the packet (m_pkthdr.hash) is used instead. NULL is
350 * returned if the packet info does not contain enough information.
351 *
352 * Caller has already made sure that m_pkthdr.hash is valid, i.e. m_flags
353 * has M_HASH set.
354 */
355lwkt_port_t
356ip_mport_pktinfo(const struct pktinfo *pi, struct mbuf *m)
357{
358 lwkt_port_t port;
359
360 KASSERT(m->m_pkthdr.hash < ncpus2,
361 ("invalid packet hash %#x\n", m->m_pkthdr.hash));
362
363 /*
364 * XXX generic packet handling defrag on CPU 0 for now.
365 */
366 if (pi->pi_flags & PKTINFO_FLAG_FRAG) {
367 m->m_pkthdr.hash = 0;
368 return &netisr_cpu[0].td_msgport;
369 }
370
371 switch (pi->pi_l3proto) {
372 case IPPROTO_TCP:
373 port = &tcp_thread[m->m_pkthdr.hash].td_msgport;
374 break;
375
376 case IPPROTO_UDP:
377 port = &udp_thread[m->m_pkthdr.hash].td_msgport;
378 break;
379
380 default:
381 port = NULL;
382 break;
383 }
384 return port;
385}
386
9eeaa8a9
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387/*
388 * Map a TCP socket to a protocol processing thread.
389 */
bf82f9b7 390lwkt_port_t
934c6849
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391tcp_soport(struct socket *so, struct sockaddr *nam __unused,
392 struct mbuf **dummy __unused, int req)
bf82f9b7 393{
9eeaa8a9
JH
394 struct inpcb *inp;
395
8affadf8
JH
396 /* The following processing all take place on Protocol Thread 0. */
397 if (req == PRU_BIND || req == PRU_CONNECT || req == PRU_ATTACH ||
398 req == PRU_LISTEN)
9eeaa8a9
JH
399 return (&tcp_thread[0].td_msgport);
400
ed894f8c 401 inp = so->so_pcb;
9eeaa8a9
JH
402 if (!inp) /* connection reset by peer */
403 return (&tcp_thread[0].td_msgport);
404
405 /*
8affadf8
JH
406 * Already bound and connected or listening. For TCP connections,
407 * the (faddr, fport, laddr, lport) association cannot change now.
408 *
409 * Note: T/TCP code needs some reorganization to fit into
410 * this model. XXX JH
411 *
9eeaa8a9
JH
412 * Rely on type-stable memory and check in protocol handler
413 * to fix race condition here w/ deallocation of inp. XXX JH
414 */
f861aec9 415 return (&tcp_thread[INP_MPORT_HASH_TCP(inp->inp_faddr.s_addr,
e0b7863e 416 inp->inp_laddr.s_addr, inp->inp_fport, inp->inp_lport)].td_msgport);
bf82f9b7
MD
417}
418
e3873585
SZ
419/*
420 * Used to route icmp messages to the proper protocol thread for ctlinput
421 * operation.
422 */
423lwkt_port_t
424tcp_ctlport(int cmd, struct sockaddr *sa, void *vip)
425{
426 struct ip *ip = vip;
427 struct tcphdr *th;
428 struct in_addr faddr;
429 int cpu;
430
431 faddr = ((struct sockaddr_in *)sa)->sin_addr;
432 if (sa->sa_family != AF_INET || faddr.s_addr == INADDR_ANY)
433 return(NULL);
14572273
SZ
434 if (ip == NULL || PRC_IS_REDIRECT(cmd) || cmd == PRC_HOSTDEAD) {
435 /*
436 * Message will be forwarded to all TCP protocol threads
437 * in following way:
438 *
439 * netisr0 (the msgport we return here)
440 * |
441 * |
442 * | domsg <----------------------------+
443 * | |
444 * | | replymsg
445 * | |
446 * V forwardmsg forwardmsg |
447 * tcp0 ------------> tcp1 ------------> tcpN
448 */
449 return cpu0_ctlport(cmd, sa, vip);
e3873585
SZ
450 } else {
451 th = (struct tcphdr *)((caddr_t)ip + (ip->ip_hl << 2));
452 cpu = tcp_addrcpu(faddr.s_addr, th->th_dport,
453 ip->ip_src.s_addr, th->th_sport);
454 }
455 return(&tcp_thread[cpu].td_msgport);
456}
457
7fe56515
JH
458lwkt_port_t
459tcp_addrport(in_addr_t faddr, in_port_t fport, in_addr_t laddr, in_port_t lport)
460{
461 return (&tcp_thread[tcp_addrcpu(faddr, fport,
462 laddr, lport)].td_msgport);
463}
464
65f3e756
MD
465lwkt_port_t
466tcp_addrport0(void)
467{
468 return (&tcp_thread[0].td_msgport);
469}
470
9eeaa8a9
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471/*
472 * Map a UDP socket to a protocol processing thread.
473 */
bf82f9b7 474lwkt_port_t
934c6849
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475udp_soport(struct socket *so, struct sockaddr *nam __unused,
476 struct mbuf **dummy __unused, int req)
bf82f9b7 477{
9eeaa8a9
JH
478 struct inpcb *inp;
479
480 /*
481 * The following processing all take place on Protocol Thread 0:
9b37b73b 482 * bind()
9eeaa8a9 483 * attach() has a null socket parameter
934c6849 484 * Fast and slow timeouts pass in null socket parameter
9eeaa8a9 485 */
9b37b73b 486 if (req == PRU_BIND || so == NULL)
9eeaa8a9
JH
487 return (&udp_thread[0].td_msgport);
488
ed894f8c 489 inp = so->so_pcb;
9eeaa8a9 490
e99d9a39 491#ifndef RSS
9eeaa8a9
JH
492 if (IN_MULTICAST(ntohl(inp->inp_laddr.s_addr)))
493 return (&udp_thread[0].td_msgport);
e99d9a39 494#endif
9eeaa8a9
JH
495
496 /*
497 * Rely on type-stable memory and check in protocol handler
498 * to fix race condition here w/ deallocation of inp. XXX JH
499 */
bf82f9b7 500
f861aec9 501 return (&udp_thread[INP_MPORT_HASH_UDP(inp->inp_faddr.s_addr,
e0b7863e 502 inp->inp_laddr.s_addr, inp->inp_fport, inp->inp_lport)].td_msgport);
bf82f9b7
MD
503}
504
e3873585
SZ
505/*
506 * Used to route icmp messages to the proper protocol thread for ctlinput
507 * operation.
508 */
509lwkt_port_t
510udp_ctlport(int cmd, struct sockaddr *sa, void *vip)
511{
512 struct ip *ip = vip;
513 struct udphdr *uh;
514 struct in_addr faddr;
515 int cpu;
516
517 faddr = ((struct sockaddr_in *)sa)->sin_addr;
518 if (sa->sa_family != AF_INET || faddr.s_addr == INADDR_ANY)
519 return(NULL);
14572273
SZ
520 if (PRC_IS_REDIRECT(cmd)) {
521 /*
522 * See the comment in tcp_ctlport; the only difference
523 * is that message is forwarded to UDP protocol theads.
524 */
525 return cpu0_ctlport(cmd, sa, vip);
526 } else if (ip == NULL || cmd == PRC_HOSTDEAD) {
527 /*
528 * XXX
529 * Once UDP inpcbs are CPU localized, we should do
530 * the same forwarding as PRC_IS_REDIRECT(cmd)
531 */
e3873585
SZ
532 cpu = 0;
533 } else {
534 uh = (struct udphdr *)((caddr_t)ip + (ip->ip_hl << 2));
535
f861aec9
SZ
536 cpu = INP_MPORT_HASH_UDP(faddr.s_addr, ip->ip_src.s_addr,
537 uh->uh_dport, uh->uh_sport);
e3873585
SZ
538 }
539 return (&udp_thread[cpu].td_msgport);
540}
541
d371a63a
JH
542/*
543 * Map a network address to a processor.
544 */
545int
e0b7863e 546tcp_addrcpu(in_addr_t faddr, in_port_t fport, in_addr_t laddr, in_port_t lport)
d371a63a 547{
f861aec9 548 return (INP_MPORT_HASH_TCP(faddr, laddr, fport, lport));
d371a63a
JH
549}
550
551int
e0b7863e 552udp_addrcpu(in_addr_t faddr, in_port_t fport, in_addr_t laddr, in_port_t lport)
d371a63a 553{
e99d9a39 554#ifndef RSS
e0b7863e 555 if (IN_MULTICAST(ntohl(laddr)))
d371a63a
JH
556 return (0);
557 else
e99d9a39 558#endif
f861aec9 559 return (INP_MPORT_HASH_UDP(faddr, laddr, fport, lport));
d371a63a
JH
560}
561
0ddb6032
JH
562/*
563 * Return LWKT port for cpu.
564 */
565lwkt_port_t
566tcp_cport(int cpu)
567{
568 return (&tcp_thread[cpu].td_msgport);
569}
570
14572273
SZ
571lwkt_port_t
572udp_cport(int cpu)
573{
574 return (&udp_thread[cpu].td_msgport);
575}
576
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577void
578tcp_thread_init(void)
579{
580 int cpu;
581
a00e7525 582 for (cpu = 0; cpu < ncpus2; cpu++) {
f23061d4 583 lwkt_create(tcpmsg_service_loop, NULL, NULL,
92db3805 584 &tcp_thread[cpu], TDF_NETWORK | TDF_MPSAFE, cpu,
cbb1e737 585 "tcp_thread %d", cpu);
5c703385 586 netmsg_service_port_init(&tcp_thread[cpu].td_msgport);
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587 }
588}
589
590void
591udp_thread_init(void)
592{
593 int cpu;
594
a00e7525 595 for (cpu = 0; cpu < ncpus2; cpu++) {
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596 lwkt_create(netmsg_service_loop, &udp_mpsafe_thread, NULL,
597 &udp_thread[cpu], TDF_NETWORK | TDF_MPSAFE, cpu,
37eacd1a 598 "udp_thread %d", cpu);
5c703385 599 netmsg_service_port_init(&udp_thread[cpu].td_msgport);
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600 }
601}