| uipc_mbuf.c (123557) | uipc_mbuf.c (123564) |
|---|---|
| 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 --- 20 unchanged lines hidden (view full) --- 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)uipc_mbuf.c 8.2 (Berkeley) 1/4/94 34 */ 35 36#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 --- 20 unchanged lines hidden (view full) --- 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)uipc_mbuf.c 8.2 (Berkeley) 1/4/94 34 */ 35 36#include <sys/cdefs.h> |
| 37__FBSDID("$FreeBSD: head/sys/kern/uipc_mbuf.c 123557 2003-12-15 21:49:41Z bms $"); | 37__FBSDID("$FreeBSD: head/sys/kern/uipc_mbuf.c 123564 2003-12-16 14:13:47Z bms $"); |
| 38 39#include "opt_mac.h" 40#include "opt_param.h" 41#include "opt_mbuf_stress_test.h" 42 43#include <sys/param.h> 44#include <sys/systm.h> 45#include <sys/kernel.h> --- 710 unchanged lines hidden (view full) --- 756} 757 758/* 759 * Apply function f to the data in an mbuf chain starting "off" bytes from 760 * the beginning, continuing for "len" bytes. 761 */ 762int 763m_apply(struct mbuf *m, int off, int len, | 38 39#include "opt_mac.h" 40#include "opt_param.h" 41#include "opt_mbuf_stress_test.h" 42 43#include <sys/param.h> 44#include <sys/systm.h> 45#include <sys/kernel.h> --- 710 unchanged lines hidden (view full) --- 756} 757 758/* 759 * Apply function f to the data in an mbuf chain starting "off" bytes from 760 * the beginning, continuing for "len" bytes. 761 */ 762int 763m_apply(struct mbuf *m, int off, int len, |
| 764 int (*f)(void *, caddr_t, unsigned int), void *arg) | 764 int (*f)(void *, void *, u_int), void *arg) |
| 765{ | 765{ |
| 766 unsigned int count; | 766 u_int count; |
| 767 int rval; 768 769 KASSERT(off >= 0, ("m_apply, negative off %d", off)); 770 KASSERT(len >= 0, ("m_apply, negative len %d", len)); | 767 int rval; 768 769 KASSERT(off >= 0, ("m_apply, negative off %d", off)); 770 KASSERT(len >= 0, ("m_apply, negative len %d", len)); |
| 771 | |
| 772 while (off > 0) { 773 KASSERT(m != NULL, ("m_apply, offset > size of mbuf chain")); 774 if (off < m->m_len) 775 break; 776 off -= m->m_len; 777 m = m->m_next; 778 } 779 while (len > 0) { 780 KASSERT(m != NULL, ("m_apply, offset > size of mbuf chain")); 781 count = min(m->m_len - off, len); | 771 while (off > 0) { 772 KASSERT(m != NULL, ("m_apply, offset > size of mbuf chain")); 773 if (off < m->m_len) 774 break; 775 off -= m->m_len; 776 m = m->m_next; 777 } 778 while (len > 0) { 779 KASSERT(m != NULL, ("m_apply, offset > size of mbuf chain")); 780 count = min(m->m_len - off, len); |
| 782 | |
| 783 rval = (*f)(arg, mtod(m, caddr_t) + off, count); 784 if (rval) 785 return (rval); | 781 rval = (*f)(arg, mtod(m, caddr_t) + off, count); 782 if (rval) 783 return (rval); |
| 786 | |
| 787 len -= count; 788 off = 0; 789 m = m->m_next; 790 } | 784 len -= count; 785 off = 0; 786 m = m->m_next; 787 } |
| 791 | |
| 792 return (0); 793} 794 795/* 796 * Return a pointer to mbuf/offset of location in mbuf chain. 797 */ 798struct mbuf * 799m_getptr(struct mbuf *m, int loc, int *off) 800{ 801 802 while (loc >= 0) { | 788 return (0); 789} 790 791/* 792 * Return a pointer to mbuf/offset of location in mbuf chain. 793 */ 794struct mbuf * 795m_getptr(struct mbuf *m, int loc, int *off) 796{ 797 798 while (loc >= 0) { |
| 803 /* Normal end of search */ | 799 /* Normal end of search. */ |
| 804 if (m->m_len > loc) { 805 *off = loc; 806 return (m); 807 } else { 808 loc -= m->m_len; | 800 if (m->m_len > loc) { 801 *off = loc; 802 return (m); 803 } else { 804 loc -= m->m_len; |
| 809 | |
| 810 if (m->m_next == NULL) { 811 if (loc == 0) { | 805 if (m->m_next == NULL) { 806 if (loc == 0) { |
| 812 /* Point at the end of valid data */ | 807 /* Point at the end of valid data. */ |
| 813 *off = m->m_len; 814 return (m); | 808 *off = m->m_len; 809 return (m); |
| 815 } else 816 return (NULL); 817 } else 818 m = m->m_next; | 810 } 811 return (NULL); 812 } 813 m = m->m_next; |
| 819 } 820 } | 814 } 815 } |
| 821 | |
| 822 return (NULL); 823} 824 825void 826m_print(const struct mbuf *m) 827{ 828 int len; 829 const struct mbuf *m2; --- 207 unchanged lines hidden --- | 816 return (NULL); 817} 818 819void 820m_print(const struct mbuf *m) 821{ 822 int len; 823 const struct mbuf *m2; --- 207 unchanged lines hidden --- |