| mbuf.h (152583) | mbuf.h (153232) |
|---|---|
| 1/*- 2 * Copyright (c) 1982, 1986, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 13 unchanged lines hidden (view full) --- 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)mbuf.h 8.5 (Berkeley) 2/19/95 | 1/*- 2 * Copyright (c) 1982, 1986, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 13 unchanged lines hidden (view full) --- 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)mbuf.h 8.5 (Berkeley) 2/19/95 |
| 30 * $FreeBSD: head/sys/sys/mbuf.h 152583 2005-11-18 16:23:26Z andre $ | 30 * $FreeBSD: head/sys/sys/mbuf.h 153232 2005-12-08 13:13:06Z andre $ |
| 31 */ 32 33#ifndef _SYS_MBUF_H_ 34#define _SYS_MBUF_H_ 35 36/* XXX: These includes suck. Sorry! */ 37#include <sys/queue.h> 38#ifdef _KERNEL --- 141 unchanged lines hidden (view full) --- 180#define M_LASTFRAG 0x2000 /* packet is last fragment */ 181#define M_VLANTAG 0x10000 /* packet has VLAN tag attached */ 182 183/* 184 * External buffer types: identify ext_buf type. 185 */ 186#define EXT_CLUSTER 1 /* mbuf cluster */ 187#define EXT_SFBUF 2 /* sendfile(2)'s sf_bufs */ | 31 */ 32 33#ifndef _SYS_MBUF_H_ 34#define _SYS_MBUF_H_ 35 36/* XXX: These includes suck. Sorry! */ 37#include <sys/queue.h> 38#ifdef _KERNEL --- 141 unchanged lines hidden (view full) --- 180#define M_LASTFRAG 0x2000 /* packet is last fragment */ 181#define M_VLANTAG 0x10000 /* packet has VLAN tag attached */ 182 183/* 184 * External buffer types: identify ext_buf type. 185 */ 186#define EXT_CLUSTER 1 /* mbuf cluster */ 187#define EXT_SFBUF 2 /* sendfile(2)'s sf_bufs */ |
| 188#define EXT_JUMBO9 3 /* jumbo cluster 9216 bytes */ 189#define EXT_JUMBO16 4 /* jumbo cluster 16184 bytes */ 190#define EXT_PACKET 5 /* mbuf+cluster from packet zone */ | 188#define EXT_JUMBO4 3 /* jumbo cluster 4096 bytes */ 189#define EXT_JUMBO9 4 /* jumbo cluster 9216 bytes */ 190#define EXT_JUMBO16 5 /* jumbo cluster 16184 bytes */ 191#define EXT_PACKET 6 /* mbuf+cluster from packet zone */ |
| 191#define EXT_NET_DRV 100 /* custom ext_buf provided by net driver(s) */ 192#define EXT_MOD_TYPE 200 /* custom module's ext_buf type */ 193#define EXT_DISPOSABLE 300 /* can throw this buffer away w/page flipping */ 194#define EXT_EXTREF 400 /* has externally maintained ref_cnt ptr */ 195 196/* 197 * Flags copied when copying m_pkthdr. 198 */ --- 101 unchanged lines hidden (view full) --- 300/* 301 * String names of mbuf-related UMA(9) and malloc(9) types. Exposed to 302 * !_KERNEL so that monitoring tools can look up the zones with 303 * libmemstat(3). 304 */ 305#define MBUF_MEM_NAME "mbuf" 306#define MBUF_CLUSTER_MEM_NAME "mbuf_cluster" 307#define MBUF_PACKET_MEM_NAME "mbuf_packet" | 192#define EXT_NET_DRV 100 /* custom ext_buf provided by net driver(s) */ 193#define EXT_MOD_TYPE 200 /* custom module's ext_buf type */ 194#define EXT_DISPOSABLE 300 /* can throw this buffer away w/page flipping */ 195#define EXT_EXTREF 400 /* has externally maintained ref_cnt ptr */ 196 197/* 198 * Flags copied when copying m_pkthdr. 199 */ --- 101 unchanged lines hidden (view full) --- 301/* 302 * String names of mbuf-related UMA(9) and malloc(9) types. Exposed to 303 * !_KERNEL so that monitoring tools can look up the zones with 304 * libmemstat(3). 305 */ 306#define MBUF_MEM_NAME "mbuf" 307#define MBUF_CLUSTER_MEM_NAME "mbuf_cluster" 308#define MBUF_PACKET_MEM_NAME "mbuf_packet" |
| 309#define MBUF_JUMBO4_MEM_NAME "mbuf_jumbo_4k" |
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| 308#define MBUF_JUMBO9_MEM_NAME "mbuf_jumbo_9k" 309#define MBUF_JUMBO16_MEM_NAME "mbuf_jumbo_16k" 310#define MBUF_TAG_MEM_NAME "mbuf_tag" 311#define MBUF_EXTREFCNT_MEM_NAME "mbuf_ext_refcnt" 312 313#ifdef _KERNEL 314 315#ifdef WITNESS --- 10 unchanged lines hidden (view full) --- 326 * Network buffer allocation API 327 * 328 * The rest of it is defined in kern/kern_mbuf.c 329 */ 330 331extern uma_zone_t zone_mbuf; 332extern uma_zone_t zone_clust; 333extern uma_zone_t zone_pack; | 310#define MBUF_JUMBO9_MEM_NAME "mbuf_jumbo_9k" 311#define MBUF_JUMBO16_MEM_NAME "mbuf_jumbo_16k" 312#define MBUF_TAG_MEM_NAME "mbuf_tag" 313#define MBUF_EXTREFCNT_MEM_NAME "mbuf_ext_refcnt" 314 315#ifdef _KERNEL 316 317#ifdef WITNESS --- 10 unchanged lines hidden (view full) --- 328 * Network buffer allocation API 329 * 330 * The rest of it is defined in kern/kern_mbuf.c 331 */ 332 333extern uma_zone_t zone_mbuf; 334extern uma_zone_t zone_clust; 335extern uma_zone_t zone_pack; |
| 336extern uma_zone_t zone_jumbo4; |
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| 334extern uma_zone_t zone_jumbo9; 335extern uma_zone_t zone_jumbo16; 336extern uma_zone_t zone_ext_refcnt; 337 338static __inline struct mbuf *m_get(int how, short type); 339static __inline struct mbuf *m_gethdr(int how, short type); 340static __inline struct mbuf *m_getcl(int how, short type, int flags); | 337extern uma_zone_t zone_jumbo9; 338extern uma_zone_t zone_jumbo16; 339extern uma_zone_t zone_ext_refcnt; 340 341static __inline struct mbuf *m_get(int how, short type); 342static __inline struct mbuf *m_gethdr(int how, short type); 343static __inline struct mbuf *m_getcl(int how, short type, int flags); |
| 344static __inline struct mbuf *m_getjcl(int how, short type, int flags, int size); |
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| 341static __inline struct mbuf *m_getclr(int how, short type); /* XXX */ 342static __inline struct mbuf *m_free(struct mbuf *m); 343static __inline void m_clget(struct mbuf *m, int how); | 345static __inline struct mbuf *m_getclr(int how, short type); /* XXX */ 346static __inline struct mbuf *m_free(struct mbuf *m); 347static __inline void m_clget(struct mbuf *m, int how); |
| 348static __inline void *m_cljget(struct mbuf *m, int how, int size); |
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| 344static __inline void m_chtype(struct mbuf *m, short new_type); 345void mb_free_ext(struct mbuf *); 346 347static __inline 348struct mbuf * 349m_get(int how, short type) 350{ 351 struct mb_args args; --- 36 unchanged lines hidden (view full) --- 388{ 389 struct mb_args args; 390 391 args.flags = flags; 392 args.type = type; 393 return (uma_zalloc_arg(zone_pack, &args, how)); 394} 395 | 349static __inline void m_chtype(struct mbuf *m, short new_type); 350void mb_free_ext(struct mbuf *); 351 352static __inline 353struct mbuf * 354m_get(int how, short type) 355{ 356 struct mb_args args; --- 36 unchanged lines hidden (view full) --- 393{ 394 struct mb_args args; 395 396 args.flags = flags; 397 args.type = type; 398 return (uma_zalloc_arg(zone_pack, &args, how)); 399} 400 |
| 401/* 402 * m_getjcl() returns an mbuf with a cluster of the specified size attached. 403 * For size it takes MCLBYTES, MJUM4BYTES, MJUM9BYTES, MJUM16BYTES. 404 */ 405static __inline /* XXX: This is rather large, should be real function maybe. */ 406struct mbuf * 407m_getjcl(int how, short type, int flags, int size) 408{ 409 struct mb_args args; 410 struct mbuf *m, *n; 411 uma_zone_t zone; 412 413 args.flags = flags; 414 args.type = type; 415 416 m = uma_zalloc_arg(zone_mbuf, &args, how); 417 if (m == NULL) 418 return NULL; 419 420 switch (size) { 421 case MCLBYTES: 422 zone = zone_clust; 423 break; 424 case MJUM4BYTES: 425 zone = zone_jumbo4; 426 break; 427 case MJUM9BYTES: 428 zone = zone_jumbo9; 429 break; 430 case MJUM16BYTES: 431 zone = zone_jumbo16; 432 break; 433 default: 434 panic("%s: m_getjcl: invalid cluster type", __func__); 435 } 436 n = uma_zalloc_arg(zone, m, how); 437 if (n == NULL) 438 uma_zfree(zone_mbuf, m); 439 return n; 440} 441 |
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| 396static __inline 397struct mbuf * 398m_free(struct mbuf *m) 399{ 400 struct mbuf *n = m->m_next; 401 402 if (m->m_flags & M_EXT) 403 mb_free_ext(m); --- 7 unchanged lines hidden (view full) --- 411m_clget(struct mbuf *m, int how) 412{ 413 if (m->m_flags & M_EXT) 414 printf("%s: %p mbuf already has cluster\n", __func__, m); 415 m->m_ext.ext_buf = NULL; 416 uma_zalloc_arg(zone_clust, m, how); 417} 418 | 442static __inline 443struct mbuf * 444m_free(struct mbuf *m) 445{ 446 struct mbuf *n = m->m_next; 447 448 if (m->m_flags & M_EXT) 449 mb_free_ext(m); --- 7 unchanged lines hidden (view full) --- 457m_clget(struct mbuf *m, int how) 458{ 459 if (m->m_flags & M_EXT) 460 printf("%s: %p mbuf already has cluster\n", __func__, m); 461 m->m_ext.ext_buf = NULL; 462 uma_zalloc_arg(zone_clust, m, how); 463} 464 |
| 465/* 466 * m_cljget() is different from m_clget() as it can allocate clusters 467 * without attaching them to an mbuf. In that case the return value 468 * is the pointer to the cluster of the requested size. If an mbuf was 469 * specified, it gets the cluster attached to it and the return value 470 * can be safely ignored. 471 * For size it takes MCLBYTES, MJUM4BYTES, MJUM9BYTES, MJUM16BYTES. 472 */ |
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| 419static __inline | 473static __inline |
| 474void * 475m_cljget(struct mbuf *m, int how, int size) 476{ 477 uma_zone_t zone; 478 479 if (m && m->m_flags & M_EXT) 480 printf("%s: %p mbuf already has cluster\n", __func__, m); 481 if (m != NULL) 482 m->m_ext.ext_buf = NULL; 483 484 switch (size) { 485 case MCLBYTES: 486 zone = zone_clust; 487 break; 488 case MJUM4BYTES: 489 zone = zone_jumbo4; 490 break; 491 case MJUM9BYTES: 492 zone = zone_jumbo9; 493 break; 494 case MJUM16BYTES: 495 zone = zone_jumbo16; 496 break; 497 default: 498 panic("%s: m_getjcl: invalid cluster type", __func__); 499 } 500 501 return (uma_zalloc_arg(zone, m, how)); 502} 503 504static __inline |
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| 420void 421m_chtype(struct mbuf *m, short new_type) 422{ 423 m->m_type = new_type; 424} 425 426/* 427 * mbuf, cluster, and external object allocation macros --- 342 unchanged lines hidden --- | 505void 506m_chtype(struct mbuf *m, short new_type) 507{ 508 m->m_type = new_type; 509} 510 511/* 512 * mbuf, cluster, and external object allocation macros --- 342 unchanged lines hidden --- |