| uipc_mbuf.c (169624) | uipc_mbuf.c (172463) |
|---|---|
| 1/*- 2 * Copyright (c) 1982, 1986, 1988, 1991, 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 --- 16 unchanged lines hidden (view full) --- 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 * @(#)uipc_mbuf.c 8.2 (Berkeley) 1/4/94 30 */ 31 32#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 1982, 1986, 1988, 1991, 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 --- 16 unchanged lines hidden (view full) --- 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 * @(#)uipc_mbuf.c 8.2 (Berkeley) 1/4/94 30 */ 31 32#include <sys/cdefs.h> |
| 33__FBSDID("$FreeBSD: head/sys/kern/uipc_mbuf.c 169624 2007-05-16 20:41:08Z rwatson $"); | 33__FBSDID("$FreeBSD: head/sys/kern/uipc_mbuf.c 172463 2007-10-06 21:42:39Z kmacy $"); |
| 34 35#include "opt_mac.h" 36#include "opt_param.h" 37#include "opt_mbuf_stress_test.h" 38 39#include <sys/param.h> 40#include <sys/systm.h> 41#include <sys/kernel.h> --- 164 unchanged lines hidden (view full) --- 206 207/* 208 * Non-directly-exported function to clean up after mbufs with M_EXT 209 * storage attached to them if the reference count hits 1. 210 */ 211void 212mb_free_ext(struct mbuf *m) 213{ | 34 35#include "opt_mac.h" 36#include "opt_param.h" 37#include "opt_mbuf_stress_test.h" 38 39#include <sys/param.h> 40#include <sys/systm.h> 41#include <sys/kernel.h> --- 164 unchanged lines hidden (view full) --- 206 207/* 208 * Non-directly-exported function to clean up after mbufs with M_EXT 209 * storage attached to them if the reference count hits 1. 210 */ 211void 212mb_free_ext(struct mbuf *m) 213{ |
| 214 int skipmbuf; 215 |
|
| 214 KASSERT((m->m_flags & M_EXT) == M_EXT, ("%s: M_EXT not set", __func__)); 215 KASSERT(m->m_ext.ref_cnt != NULL, ("%s: ref_cnt not set", __func__)); 216 | 216 KASSERT((m->m_flags & M_EXT) == M_EXT, ("%s: M_EXT not set", __func__)); 217 KASSERT(m->m_ext.ref_cnt != NULL, ("%s: ref_cnt not set", __func__)); 218 |
| 219 220 /* 221 * check if the header is embedded in the cluster 222 */ 223 skipmbuf = (m->m_flags & M_NOFREE); 224 |
|
| 217 /* Free attached storage if this mbuf is the only reference to it. */ 218 if (*(m->m_ext.ref_cnt) == 1 || 219 atomic_fetchadd_int(m->m_ext.ref_cnt, -1) == 1) { 220 switch (m->m_ext.ext_type) { 221 case EXT_PACKET: /* The packet zone is special. */ 222 if (*(m->m_ext.ref_cnt) == 0) 223 *(m->m_ext.ref_cnt) = 1; 224 uma_zfree(zone_pack, m); --- 24 unchanged lines hidden (view full) --- 249 (*(m->m_ext.ext_free))(m->m_ext.ext_buf, 250 m->m_ext.ext_args); 251 break; 252 default: 253 KASSERT(m->m_ext.ext_type == 0, 254 ("%s: unknown ext_type", __func__)); 255 } 256 } | 225 /* Free attached storage if this mbuf is the only reference to it. */ 226 if (*(m->m_ext.ref_cnt) == 1 || 227 atomic_fetchadd_int(m->m_ext.ref_cnt, -1) == 1) { 228 switch (m->m_ext.ext_type) { 229 case EXT_PACKET: /* The packet zone is special. */ 230 if (*(m->m_ext.ref_cnt) == 0) 231 *(m->m_ext.ref_cnt) = 1; 232 uma_zfree(zone_pack, m); --- 24 unchanged lines hidden (view full) --- 257 (*(m->m_ext.ext_free))(m->m_ext.ext_buf, 258 m->m_ext.ext_args); 259 break; 260 default: 261 KASSERT(m->m_ext.ext_type == 0, 262 ("%s: unknown ext_type", __func__)); 263 } 264 } |
| 265 if (skipmbuf) 266 return; 267 |
|
| 257 /* 258 * Free this mbuf back to the mbuf zone with all m_ext 259 * information purged. 260 */ 261 m->m_ext.ext_buf = NULL; 262 m->m_ext.ext_free = NULL; 263 m->m_ext.ext_args = NULL; 264 m->m_ext.ref_cnt = NULL; --- 1576 unchanged lines hidden --- | 268 /* 269 * Free this mbuf back to the mbuf zone with all m_ext 270 * information purged. 271 */ 272 m->m_ext.ext_buf = NULL; 273 m->m_ext.ext_free = NULL; 274 m->m_ext.ext_args = NULL; 275 m->m_ext.ref_cnt = NULL; --- 1576 unchanged lines hidden --- |