inet.hh (9554:406fbcf60223) inet.hh (9955:5d8722ab804b)
1/*
1/*
2 * Copyright (c) 2013 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder. You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
2 * Copyright (c) 2002-2005 The Regents of The University of Michigan
3 * Copyright (c) 2010 Advanced Micro Devices, Inc.
4 * 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 are
8 * met: redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer;

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24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * Authors: Nathan Binkert
30 * Steve Reinhardt
31 * Gabe Black
14 * Copyright (c) 2002-2005 The Regents of The University of Michigan
15 * Copyright (c) 2010 Advanced Micro Devices, Inc.
16 * All rights reserved.
17 *
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions are
20 * met: redistributions of source code must retain the above copyright
21 * notice, this list of conditions and the following disclaimer;

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36 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
38 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
39 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 *
41 * Authors: Nathan Binkert
42 * Steve Reinhardt
43 * Gabe Black
44 * Geoffrey Blake
32 */
33
34#ifndef __BASE_INET_HH__
35#define __BASE_INET_HH__
36
37#include <iosfwd>
38#include <string>
39#include <utility>

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99
100};
101
102std::ostream &operator<<(std::ostream &stream, const EthAddr &ea);
103bool operator==(const EthAddr &left, const EthAddr &right);
104
105struct EthHdr : public eth_hdr
106{
45 */
46
47#ifndef __BASE_INET_HH__
48#define __BASE_INET_HH__
49
50#include <iosfwd>
51#include <string>
52#include <utility>

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112
113};
114
115std::ostream &operator<<(std::ostream &stream, const EthAddr &ea);
116bool operator==(const EthAddr &left, const EthAddr &right);
117
118struct EthHdr : public eth_hdr
119{
107 uint16_t type() const { return ntohs(eth_type); }
120 bool isVlan() const { return (ntohs(eth_type) == ETH_TYPE_8021Q); }
121 uint16_t type() const {
122 if (!isVlan())
123 return ntohs(eth_type);
124 else
125 // L3 type is now 16 bytes into the hdr with 802.1Q
126 // instead of 12. dnet/eth.h only supports 802.1
127 return ntohs(*((uint16_t*)(((uint8_t *)this) + 16)));
128 }
129 uint16_t vlanId() const {
130 if (isVlan())
131 return ntohs(*((uint16_t*)(((uint8_t *)this) + 14)));
132 else
133 return 0x0000;
134 }
135
108 const EthAddr &src() const { return *(EthAddr *)&eth_src; }
109 const EthAddr &dst() const { return *(EthAddr *)&eth_dst; }
110
136 const EthAddr &src() const { return *(EthAddr *)&eth_src; }
137 const EthAddr &dst() const { return *(EthAddr *)&eth_dst; }
138
111 int size() const { return sizeof(eth_hdr); }
139 int size() const {
140 if (!isVlan())
141 return sizeof(eth_hdr);
142 else
143 return (sizeof(eth_hdr)+4);
144 }
112
113 const uint8_t *bytes() const { return (const uint8_t *)this; }
114 const uint8_t *payload() const { return bytes() + size(); }
115 uint8_t *bytes() { return (uint8_t *)this; }
116 uint8_t *payload() { return bytes() + size(); }
117};
118
119class EthPtr
120{
121 protected:
122 friend class IpPtr;
145
146 const uint8_t *bytes() const { return (const uint8_t *)this; }
147 const uint8_t *payload() const { return bytes() + size(); }
148 uint8_t *bytes() { return (uint8_t *)this; }
149 uint8_t *payload() { return bytes() + size(); }
150};
151
152class EthPtr
153{
154 protected:
155 friend class IpPtr;
156 friend class Ip6Ptr;
123 EthPacketPtr p;
124
125 public:
126 EthPtr() {}
127 EthPtr(const EthPacketPtr &ptr) : p(ptr) { }
128
129 EthHdr *operator->() { return (EthHdr *)p->data; }
130 EthHdr &operator*() { return *(EthHdr *)p->data; }

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221 uint16_t sum() const { return ip_sum; }
222 uint32_t src() const { return ntohl(ip_src); }
223 uint32_t dst() const { return ntohl(ip_dst); }
224
225 void sum(uint16_t sum) { ip_sum = sum; }
226 void id(uint16_t _id) { ip_id = htons(_id); }
227 void len(uint16_t _len) { ip_len = htons(_len); }
228
157 EthPacketPtr p;
158
159 public:
160 EthPtr() {}
161 EthPtr(const EthPacketPtr &ptr) : p(ptr) { }
162
163 EthHdr *operator->() { return (EthHdr *)p->data; }
164 EthHdr &operator*() { return *(EthHdr *)p->data; }

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255 uint16_t sum() const { return ip_sum; }
256 uint32_t src() const { return ntohl(ip_src); }
257 uint32_t dst() const { return ntohl(ip_dst); }
258
259 void sum(uint16_t sum) { ip_sum = sum; }
260 void id(uint16_t _id) { ip_id = htons(_id); }
261 void len(uint16_t _len) { ip_len = htons(_len); }
262
229
230 bool options(std::vector<const IpOpt *> &vec) const;
231
232 int size() const { return hlen(); }
233 const uint8_t *bytes() const { return (const uint8_t *)this; }
234 const uint8_t *payload() const { return bytes() + size(); }
235 uint8_t *bytes() { return (uint8_t *)this; }
236 uint8_t *payload() { return bytes() + size(); }
237};
238
239class IpPtr
240{
241 protected:
242 friend class TcpPtr;
243 friend class UdpPtr;
244 EthPacketPtr p;
263 bool options(std::vector<const IpOpt *> &vec) const;
264
265 int size() const { return hlen(); }
266 const uint8_t *bytes() const { return (const uint8_t *)this; }
267 const uint8_t *payload() const { return bytes() + size(); }
268 uint8_t *bytes() { return (uint8_t *)this; }
269 uint8_t *payload() { return bytes() + size(); }
270};
271
272class IpPtr
273{
274 protected:
275 friend class TcpPtr;
276 friend class UdpPtr;
277 EthPacketPtr p;
278 bool eth_hdr_vlan;
245
246 void set(const EthPacketPtr &ptr)
247 {
248 p = 0;
279
280 void set(const EthPacketPtr &ptr)
281 {
282 p = 0;
283 eth_hdr_vlan = false;
249
250 if (ptr) {
251 EthHdr *eth = (EthHdr *)ptr->data;
252 if (eth->type() == ETH_TYPE_IP)
253 p = ptr;
284
285 if (ptr) {
286 EthHdr *eth = (EthHdr *)ptr->data;
287 if (eth->type() == ETH_TYPE_IP)
288 p = ptr;
289 if (eth->isVlan())
290 eth_hdr_vlan = true;
254 }
255 }
256
257 public:
291 }
292 }
293
294 public:
258 IpPtr() : p(0) {}
259 IpPtr(const EthPacketPtr &ptr) : p(0) { set(ptr); }
260 IpPtr(const EthPtr &ptr) : p(0) { set(ptr.p); }
261 IpPtr(const IpPtr &ptr) : p(ptr.p) { }
295 IpPtr() : p(0), eth_hdr_vlan(false) {}
296 IpPtr(const EthPacketPtr &ptr) : p(0), eth_hdr_vlan(false) { set(ptr); }
297 IpPtr(const EthPtr &ptr) : p(0), eth_hdr_vlan(false) { set(ptr.p); }
298 IpPtr(const IpPtr &ptr) : p(ptr.p), eth_hdr_vlan(ptr.eth_hdr_vlan) { }
262
299
263 IpHdr *get() { return (IpHdr *)(p->data + sizeof(eth_hdr)); }
300 IpHdr *get() { return (IpHdr *)(p->data + sizeof(eth_hdr) +
301 ((eth_hdr_vlan) ? 4 : 0)); }
264 IpHdr *operator->() { return get(); }
265 IpHdr &operator*() { return *get(); }
266
267 const IpHdr *get() const
302 IpHdr *operator->() { return get(); }
303 IpHdr &operator*() { return *get(); }
304
305 const IpHdr *get() const
268 { return (const IpHdr *)(p->data + sizeof(eth_hdr)); }
306 { return (const IpHdr *)(p->data + sizeof(eth_hdr) +
307 ((eth_hdr_vlan) ? 4 : 0)); }
269 const IpHdr *operator->() const { return get(); }
270 const IpHdr &operator*() const { return *get(); }
271
272 const IpPtr &operator=(const EthPacketPtr &ptr) { set(ptr); return *this; }
273 const IpPtr &operator=(const EthPtr &ptr) { set(ptr.p); return *this; }
274 const IpPtr &operator=(const IpPtr &ptr) { p = ptr.p; return *this; }
275
276 const EthPacketPtr packet() const { return p; }
277 EthPacketPtr packet() { return p; }
278 bool operator!() const { return !p; }
279 operator bool() const { return p; }
308 const IpHdr *operator->() const { return get(); }
309 const IpHdr &operator*() const { return *get(); }
310
311 const IpPtr &operator=(const EthPacketPtr &ptr) { set(ptr); return *this; }
312 const IpPtr &operator=(const EthPtr &ptr) { set(ptr.p); return *this; }
313 const IpPtr &operator=(const IpPtr &ptr) { p = ptr.p; return *this; }
314
315 const EthPacketPtr packet() const { return p; }
316 EthPacketPtr packet() { return p; }
317 bool operator!() const { return !p; }
318 operator bool() const { return p; }
280 int off() const { return sizeof(eth_hdr); }
281 int pstart() const { return off() + get()->size(); }
319 int off() const { return (sizeof(eth_hdr) + ((eth_hdr_vlan) ? 4 : 0)); }
320 int pstart() const { return (off() + get()->size()); }
282};
283
284uint16_t cksum(const IpPtr &ptr);
285
286struct IpOpt : public ip_opt
287{
288 uint8_t type() const { return opt_type; }
289 uint8_t typeNumber() const { return IP_OPT_NUMBER(opt_type); }

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305 uint16_t mtur() const { return ntohs(opt_data.mtu); }
306 void tr(ip_opt_data_tr &tr) const;
307 const uint32_t *addext() const { return &opt_data.addext[0]; }
308 uint16_t rtralt() const { return ntohs(opt_data.rtralt); }
309 void sdb(std::vector<uint32_t> &vec) const;
310};
311
312/*
321};
322
323uint16_t cksum(const IpPtr &ptr);
324
325struct IpOpt : public ip_opt
326{
327 uint8_t type() const { return opt_type; }
328 uint8_t typeNumber() const { return IP_OPT_NUMBER(opt_type); }

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344 uint16_t mtur() const { return ntohs(opt_data.mtu); }
345 void tr(ip_opt_data_tr &tr) const;
346 const uint32_t *addext() const { return &opt_data.addext[0]; }
347 uint16_t rtralt() const { return ntohs(opt_data.rtralt); }
348 void sdb(std::vector<uint32_t> &vec) const;
349};
350
351/*
352 * Ip6 Classes
353 */
354struct Ip6Opt;
355struct Ip6Hdr : public ip6_hdr
356{
357 uint8_t version() const { return ip6_vfc; }
358 uint32_t flow() const { return ntohl(ip6_flow); }
359 uint16_t plen() const { return ntohs(ip6_plen); }
360 uint16_t hlen() const { return IP6_HDR_LEN; }
361 uint8_t nxt() const { return ip6_nxt; }
362 uint8_t hlim() const { return ip6_hlim; }
363
364 const uint8_t* src() const { return ip6_src.data; }
365 const uint8_t* dst() const { return ip6_dst.data; }
366
367 int extensionLength() const;
368 const Ip6Opt* getExt(uint8_t ext) const;
369 const Ip6Opt* fragmentExt() const { return getExt(IP_PROTO_FRAGMENT); }
370 const Ip6Opt* rtTypeExt() const { return getExt(IP_PROTO_ROUTING); }
371 const Ip6Opt* dstOptExt() const { return getExt(IP_PROTO_DSTOPTS); }
372 uint8_t proto() const;
373
374 void plen(uint16_t _plen) { ip6_plen = htons(_plen); }
375
376 int size() const { return IP6_HDR_LEN + extensionLength(); }
377 const uint8_t *bytes() const { return (const uint8_t *)this; }
378 const uint8_t *payload() const { return bytes() + IP6_HDR_LEN
379 + extensionLength(); }
380 uint8_t *bytes() { return (uint8_t *)this; }
381 uint8_t *payload() { return bytes() + IP6_HDR_LEN
382 + extensionLength(); }
383};
384
385class Ip6Ptr
386{
387 protected:
388 friend class TcpPtr;
389 friend class UdpPtr;
390 EthPacketPtr p;
391 bool eth_hdr_vlan;
392
393 void set(const EthPacketPtr &ptr)
394 {
395 p = 0;
396 eth_hdr_vlan = false;
397
398 if (ptr) {
399 EthHdr *eth = (EthHdr *)ptr->data;
400 if (eth->type() == ETH_TYPE_IPV6)
401 p = ptr;
402 if (eth->isVlan())
403 eth_hdr_vlan = true;
404 }
405 }
406
407 public:
408 Ip6Ptr() : p(0), eth_hdr_vlan(false) {}
409 Ip6Ptr(const EthPacketPtr &ptr) : p(0), eth_hdr_vlan(false) { set(ptr); }
410 Ip6Ptr(const EthPtr &ptr) : p(0), eth_hdr_vlan(false) { set(ptr.p); }
411 Ip6Ptr(const Ip6Ptr &ptr) : p(ptr.p), eth_hdr_vlan(ptr.eth_hdr_vlan) { }
412
413 Ip6Hdr *get() { return (Ip6Hdr *)(p->data + sizeof(eth_hdr)
414 + ((eth_hdr_vlan) ? 4 : 0)); }
415 Ip6Hdr *operator->() { return get(); }
416 Ip6Hdr &operator*() { return *get(); }
417
418 const Ip6Hdr *get() const
419 { return (const Ip6Hdr *)(p->data + sizeof(eth_hdr)
420 + ((eth_hdr_vlan) ? 4 : 0)); }
421 const Ip6Hdr *operator->() const { return get(); }
422 const Ip6Hdr &operator*() const { return *get(); }
423
424 const Ip6Ptr &operator=(const EthPacketPtr &ptr)
425 { set(ptr); return *this; }
426 const Ip6Ptr &operator=(const EthPtr &ptr)
427 { set(ptr.p); return *this; }
428 const Ip6Ptr &operator=(const Ip6Ptr &ptr)
429 { p = ptr.p; return *this; }
430
431 const EthPacketPtr packet() const { return p; }
432 EthPacketPtr packet() { return p; }
433 bool operator!() const { return !p; }
434 operator bool() const { return p; }
435 int off() const { return sizeof(eth_hdr) + ((eth_hdr_vlan) ? 4 : 0); }
436 int pstart() const { return off() + get()->size(); }
437};
438
439// Dnet supplied ipv6 opt header is incomplete and
440// newer NIC card filters expect a more robust
441// ipv6 header option declaration.
442struct ip6_opt_fragment {
443 uint16_t offlg;
444 uint32_t ident;
445};
446
447struct ip6_opt_routing_type2 {
448 uint8_t type;
449 uint8_t segleft;
450 uint32_t reserved;
451 ip6_addr_t addr;
452};
453
454#define HOME_ADDRESS_OPTION 0xC9
455struct ip6_opt_dstopts {
456 uint8_t type;
457 uint8_t length;
458 ip6_addr_t addr;
459} __attribute__((packed));
460
461struct ip6_opt_hdr
462{
463 uint8_t ext_nxt;
464 uint8_t ext_len;
465 union {
466 struct ip6_opt_fragment fragment;
467 struct ip6_opt_routing_type2 rtType2;
468 struct ip6_opt_dstopts dstOpts;
469 } ext_data;
470} __attribute__((packed));
471
472struct Ip6Opt : public ip6_opt_hdr
473{
474 uint8_t nxt() const { return ext_nxt; }
475 uint8_t extlen() const { return ext_len; }
476 uint8_t len() const { return extlen() + 8; }
477
478 // Supporting the types of header extensions likely to be encountered:
479 // fragment, routing type 2 and dstopts.
480
481 // Routing type 2
482 uint8_t rtType2Type() const { return ext_data.rtType2.type; }
483 uint8_t rtType2SegLft() const { return ext_data.rtType2.segleft; }
484 const uint8_t* rtType2Addr() const { return ext_data.rtType2.addr.data; }
485
486 // Fragment
487 uint16_t fragmentOfflg() const { return ntohs(ext_data.fragment.offlg); }
488 uint32_t fragmentIdent() const { return ntohl(ext_data.fragment.ident); }
489
490 // Dst Options/Home Address Option
491 uint8_t dstOptType() const { return ext_data.dstOpts.type; }
492 uint8_t dstOptLength() const { return ext_data.dstOpts.length; }
493 const uint8_t* dstOptAddr() const { return ext_data.dstOpts.addr.data; }
494};
495
496
497/*
313 * TCP Stuff
314 */
315struct TcpOpt;
316struct TcpHdr : public tcp_hdr
317{
318 uint16_t sport() const { return ntohs(th_sport); }
319 uint16_t dport() const { return ntohs(th_dport); }
320 uint32_t seq() const { return ntohl(th_seq); }
321 uint32_t ack() const { return ntohl(th_ack); }
498 * TCP Stuff
499 */
500struct TcpOpt;
501struct TcpHdr : public tcp_hdr
502{
503 uint16_t sport() const { return ntohs(th_sport); }
504 uint16_t dport() const { return ntohs(th_dport); }
505 uint32_t seq() const { return ntohl(th_seq); }
506 uint32_t ack() const { return ntohl(th_ack); }
322 uint8_t off() const { return th_off; }
507 uint8_t off() const { return th_off*4; }
323 uint8_t flags() const { return th_flags & 0x3f; }
324 uint16_t win() const { return ntohs(th_win); }
325 uint16_t sum() const { return th_sum; }
326 uint16_t urp() const { return ntohs(th_urp); }
327
328 void sum(uint16_t sum) { th_sum = sum; }
329 void seq(uint32_t _seq) { th_seq = htonl(_seq); }
330 void flags(uint8_t _flags) { th_flags = _flags; }

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343 protected:
344 EthPacketPtr p;
345 int _off;
346
347 void set(const EthPacketPtr &ptr, int offset) { p = ptr; _off = offset; }
348 void set(const IpPtr &ptr)
349 {
350 if (ptr && ptr->proto() == IP_PROTO_TCP)
508 uint8_t flags() const { return th_flags & 0x3f; }
509 uint16_t win() const { return ntohs(th_win); }
510 uint16_t sum() const { return th_sum; }
511 uint16_t urp() const { return ntohs(th_urp); }
512
513 void sum(uint16_t sum) { th_sum = sum; }
514 void seq(uint32_t _seq) { th_seq = htonl(_seq); }
515 void flags(uint8_t _flags) { th_flags = _flags; }

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528 protected:
529 EthPacketPtr p;
530 int _off;
531
532 void set(const EthPacketPtr &ptr, int offset) { p = ptr; _off = offset; }
533 void set(const IpPtr &ptr)
534 {
535 if (ptr && ptr->proto() == IP_PROTO_TCP)
351 set(ptr.p, sizeof(eth_hdr) + ptr->hlen());
536 set(ptr.p, ptr.pstart());
352 else
353 set(0, 0);
354 }
537 else
538 set(0, 0);
539 }
540 void set(const Ip6Ptr &ptr)
541 {
542 if (ptr && ptr->proto() == IP_PROTO_TCP)
543 set(ptr.p, ptr.pstart());
544 else
545 set(0, 0);
546 }
355
356 public:
357 TcpPtr() : p(0), _off(0) {}
358 TcpPtr(const IpPtr &ptr) : p(0), _off(0) { set(ptr); }
547
548 public:
549 TcpPtr() : p(0), _off(0) {}
550 TcpPtr(const IpPtr &ptr) : p(0), _off(0) { set(ptr); }
551 TcpPtr(const Ip6Ptr &ptr) : p(0), _off(0) { set(ptr); }
359 TcpPtr(const TcpPtr &ptr) : p(ptr.p), _off(ptr._off) {}
360
361 TcpHdr *get() { return (TcpHdr *)(p->data + _off); }
362 TcpHdr *operator->() { return get(); }
363 TcpHdr &operator*() { return *get(); }
364
365 const TcpHdr *get() const { return (const TcpHdr *)(p->data + _off); }
366 const TcpHdr *operator->() const { return get(); }
367 const TcpHdr &operator*() const { return *get(); }
368
552 TcpPtr(const TcpPtr &ptr) : p(ptr.p), _off(ptr._off) {}
553
554 TcpHdr *get() { return (TcpHdr *)(p->data + _off); }
555 TcpHdr *operator->() { return get(); }
556 TcpHdr &operator*() { return *get(); }
557
558 const TcpHdr *get() const { return (const TcpHdr *)(p->data + _off); }
559 const TcpHdr *operator->() const { return get(); }
560 const TcpHdr &operator*() const { return *get(); }
561
369 const TcpPtr &operator=(const IpPtr &i) { set(i); return *this; }
370 const TcpPtr &operator=(const TcpPtr &t) { set(t.p, t._off); return *this; }
562 const TcpPtr &operator=(const IpPtr &i)
563 { set(i); return *this; }
564 const TcpPtr &operator=(const TcpPtr &t)
565 { set(t.p, t._off); return *this; }
371
372 const EthPacketPtr packet() const { return p; }
373 EthPacketPtr packet() { return p; }
374 bool operator!() const { return !p; }
375 operator bool() const { return p; }
376 int off() const { return _off; }
377 int pstart() const { return off() + get()->size(); }
378};

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429 protected:
430 EthPacketPtr p;
431 int _off;
432
433 void set(const EthPacketPtr &ptr, int offset) { p = ptr; _off = offset; }
434 void set(const IpPtr &ptr)
435 {
436 if (ptr && ptr->proto() == IP_PROTO_UDP)
566
567 const EthPacketPtr packet() const { return p; }
568 EthPacketPtr packet() { return p; }
569 bool operator!() const { return !p; }
570 operator bool() const { return p; }
571 int off() const { return _off; }
572 int pstart() const { return off() + get()->size(); }
573};

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624 protected:
625 EthPacketPtr p;
626 int _off;
627
628 void set(const EthPacketPtr &ptr, int offset) { p = ptr; _off = offset; }
629 void set(const IpPtr &ptr)
630 {
631 if (ptr && ptr->proto() == IP_PROTO_UDP)
437 set(ptr.p, sizeof(eth_hdr) + ptr->hlen());
632 set(ptr.p, ptr.pstart());
438 else
439 set(0, 0);
440 }
633 else
634 set(0, 0);
635 }
636 void set(const Ip6Ptr &ptr)
637 {
638 if (ptr && ptr->proto() == IP_PROTO_UDP)
639 set(ptr.p, ptr.pstart());
640 else
641 set(0, 0);
642 }
441
442 public:
443 UdpPtr() : p(0), _off(0) {}
444 UdpPtr(const IpPtr &ptr) : p(0), _off(0) { set(ptr); }
643
644 public:
645 UdpPtr() : p(0), _off(0) {}
646 UdpPtr(const IpPtr &ptr) : p(0), _off(0) { set(ptr); }
647 UdpPtr(const Ip6Ptr &ptr) : p(0), _off(0) { set(ptr); }
445 UdpPtr(const UdpPtr &ptr) : p(ptr.p), _off(ptr._off) {}
446
447 UdpHdr *get() { return (UdpHdr *)(p->data + _off); }
448 UdpHdr *operator->() { return get(); }
449 UdpHdr &operator*() { return *get(); }
450
451 const UdpHdr *get() const { return (const UdpHdr *)(p->data + _off); }
452 const UdpHdr *operator->() const { return get(); }
453 const UdpHdr &operator*() const { return *get(); }
454
455 const UdpPtr &operator=(const IpPtr &i) { set(i); return *this; }
648 UdpPtr(const UdpPtr &ptr) : p(ptr.p), _off(ptr._off) {}
649
650 UdpHdr *get() { return (UdpHdr *)(p->data + _off); }
651 UdpHdr *operator->() { return get(); }
652 UdpHdr &operator*() { return *get(); }
653
654 const UdpHdr *get() const { return (const UdpHdr *)(p->data + _off); }
655 const UdpHdr *operator->() const { return get(); }
656 const UdpHdr &operator*() const { return *get(); }
657
658 const UdpPtr &operator=(const IpPtr &i) { set(i); return *this; }
456 const UdpPtr &operator=(const UdpPtr &t) { set(t.p, t._off); return *this; }
659 const UdpPtr &operator=(const UdpPtr &t)
660 { set(t.p, t._off); return *this; }
457
458 const EthPacketPtr packet() const { return p; }
459 EthPacketPtr packet() { return p; }
460 bool operator!() const { return !p; }
461 operator bool() const { return p; }
462 int off() const { return _off; }
463 int pstart() const { return off() + get()->size(); }
464};
465
661
662 const EthPacketPtr packet() const { return p; }
663 EthPacketPtr packet() { return p; }
664 bool operator!() const { return !p; }
665 operator bool() const { return p; }
666 int off() const { return _off; }
667 int pstart() const { return off() + get()->size(); }
668};
669
670uint16_t __tu_cksum6(const Ip6Ptr &ip6);
466uint16_t __tu_cksum(const IpPtr &ip);
467uint16_t cksum(const UdpPtr &ptr);
468
469int hsplit(const EthPacketPtr &ptr);
470
471} // namespace Net
472
473#endif // __BASE_INET_HH__
671uint16_t __tu_cksum(const IpPtr &ip);
672uint16_t cksum(const UdpPtr &ptr);
673
674int hsplit(const EthPacketPtr &ptr);
675
676} // namespace Net
677
678#endif // __BASE_INET_HH__