| uipc_mbuf2.c (129062) | uipc_mbuf2.c (129906) |
|---|---|
| 1/* $KAME: uipc_mbuf2.c,v 1.31 2001/11/28 11:08:53 itojun Exp $ */ 2/* $NetBSD: uipc_mbuf.c,v 1.40 1999/04/01 00:23:25 thorpej Exp $ */ 3 4/* 5 * Copyright (C) 1999 WIDE Project. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 47 unchanged lines hidden (view full) --- 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)uipc_mbuf.c 8.4 (Berkeley) 2/14/95 61 */ 62 63#include <sys/cdefs.h> | 1/* $KAME: uipc_mbuf2.c,v 1.31 2001/11/28 11:08:53 itojun Exp $ */ 2/* $NetBSD: uipc_mbuf.c,v 1.40 1999/04/01 00:23:25 thorpej Exp $ */ 3 4/* 5 * Copyright (C) 1999 WIDE Project. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 47 unchanged lines hidden (view full) --- 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)uipc_mbuf.c 8.4 (Berkeley) 2/14/95 61 */ 62 63#include <sys/cdefs.h> |
| 64__FBSDID("$FreeBSD: head/sys/kern/uipc_mbuf2.c 129062 2004-05-09 05:57:58Z sam $"); | 64__FBSDID("$FreeBSD: head/sys/kern/uipc_mbuf2.c 129906 2004-05-31 21:46:06Z bmilekic $"); |
| 65 66/*#define PULLDOWN_DEBUG*/ 67 68#include "opt_mac.h" 69 70#include <sys/param.h> 71#include <sys/systm.h> 72#include <sys/kernel.h> --- 152 unchanged lines hidden (view full) --- 225 off = 0; 226 goto ok; 227 } 228 229 /* 230 * now, we need to do the hard way. don't m_copy as there's no room 231 * on both end. 232 */ | 65 66/*#define PULLDOWN_DEBUG*/ 67 68#include "opt_mac.h" 69 70#include <sys/param.h> 71#include <sys/systm.h> 72#include <sys/kernel.h> --- 152 unchanged lines hidden (view full) --- 225 off = 0; 226 goto ok; 227 } 228 229 /* 230 * now, we need to do the hard way. don't m_copy as there's no room 231 * on both end. 232 */ |
| 233 MGET(o, M_DONTWAIT, m->m_type); 234 if (o && len > MLEN) { 235 MCLGET(o, M_DONTWAIT); 236 if ((o->m_flags & M_EXT) == 0) { 237 m_free(o); 238 o = NULL; 239 } 240 } | 233 if (len > MLEN) 234 o = m_getcl(M_DONTWAIT, m->m_type, 0); 235 else 236 o = m_get(M_DONTWAIT, m->m_type); |
| 241 if (!o) { 242 m_freem(m); 243 return NULL; /* ENOBUFS */ 244 } 245 /* get hlen from <n, off> into <o, 0> */ 246 o->m_len = hlen; 247 bcopy(mtod(n, caddr_t) + off, mtod(o, caddr_t), hlen); 248 n->m_len -= hlen; --- 20 unchanged lines hidden (view full) --- 269 *offp = off; 270 return n; 271} 272 273static struct mbuf * 274m_dup1(struct mbuf *m, int off, int len, int wait) 275{ 276 struct mbuf *n; | 237 if (!o) { 238 m_freem(m); 239 return NULL; /* ENOBUFS */ 240 } 241 /* get hlen from <n, off> into <o, 0> */ 242 o->m_len = hlen; 243 bcopy(mtod(n, caddr_t) + off, mtod(o, caddr_t), hlen); 244 n->m_len -= hlen; --- 20 unchanged lines hidden (view full) --- 265 *offp = off; 266 return n; 267} 268 269static struct mbuf * 270m_dup1(struct mbuf *m, int off, int len, int wait) 271{ 272 struct mbuf *n; |
| 277 int l; | |
| 278 int copyhdr; 279 280 if (len > MCLBYTES) 281 return NULL; | 273 int copyhdr; 274 275 if (len > MCLBYTES) 276 return NULL; |
| 282 if (off == 0 && (m->m_flags & M_PKTHDR) != 0) { | 277 if (off == 0 && (m->m_flags & M_PKTHDR) != 0) |
| 283 copyhdr = 1; | 278 copyhdr = 1; |
| 284 MGETHDR(n, wait, m->m_type); 285 l = MHLEN; 286 } else { | 279 else |
| 287 copyhdr = 0; | 280 copyhdr = 0; |
| 288 MGET(n, wait, m->m_type); 289 l = MLEN; | 281 if (len >= MINCLSIZE) { 282 if (copyhdr == 1) 283 n = m_getcl(wait, m->m_type, M_PKTHDR); 284 else 285 n = m_getcl(wait, m->m_type, 0); 286 } else { 287 if (copyhdr == 1) 288 n = m_gethdr(wait, m->m_type); 289 else 290 n = m_get(wait, m->m_type); |
| 290 } | 291 } |
| 291 if (n && len > l) { 292 MCLGET(n, wait); 293 if ((n->m_flags & M_EXT) == 0) { 294 m_free(n); 295 n = NULL; 296 } 297 } | |
| 298 if (!n) | 292 if (!n) |
| 299 return NULL; | 293 return NULL; /* ENOBUFS */ |
| 300 301 if (copyhdr && !m_dup_pkthdr(n, m, wait)) { 302 m_free(n); 303 return NULL; 304 } 305 m_copydata(m, off, len, mtod(n, caddr_t)); 306 n->m_len = len; 307 return n; --- 148 unchanged lines hidden --- | 294 295 if (copyhdr && !m_dup_pkthdr(n, m, wait)) { 296 m_free(n); 297 return NULL; 298 } 299 m_copydata(m, off, len, mtod(n, caddr_t)); 300 n->m_len = len; 301 return n; --- 148 unchanged lines hidden --- |