| ip_output.c (167831) | ip_output.c (169454) |
|---|---|
| 1/*- 2 * Copyright (c) 1982, 1986, 1988, 1990, 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 * @(#)ip_output.c 8.3 (Berkeley) 1/21/94 | 1/*- 2 * Copyright (c) 1982, 1986, 1988, 1990, 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 * @(#)ip_output.c 8.3 (Berkeley) 1/21/94 |
| 30 * $FreeBSD: head/sys/netinet/ip_output.c 167831 2007-03-23 09:43:36Z bms $ | 30 * $FreeBSD: head/sys/netinet/ip_output.c 169454 2007-05-10 15:58:48Z rwatson $ |
| 31 */ 32 33#include "opt_ipfw.h" 34#include "opt_ipsec.h" 35#include "opt_mac.h" 36#include "opt_mbuf_stress_test.h" 37 38#include <sys/param.h> --- 63 unchanged lines hidden (view full) --- 102 * IP output. The packet in mbuf chain m contains a skeletal IP 103 * header (with len, off, ttl, proto, tos, src, dst). 104 * The mbuf chain containing the packet will be freed. 105 * The mbuf opt, if present, will not be freed. 106 * In the IP forwarding case, the packet will arrive with options already 107 * inserted, so must have a NULL opt pointer. 108 */ 109int | 31 */ 32 33#include "opt_ipfw.h" 34#include "opt_ipsec.h" 35#include "opt_mac.h" 36#include "opt_mbuf_stress_test.h" 37 38#include <sys/param.h> --- 63 unchanged lines hidden (view full) --- 102 * IP output. The packet in mbuf chain m contains a skeletal IP 103 * header (with len, off, ttl, proto, tos, src, dst). 104 * The mbuf chain containing the packet will be freed. 105 * The mbuf opt, if present, will not be freed. 106 * In the IP forwarding case, the packet will arrive with options already 107 * inserted, so must have a NULL opt pointer. 108 */ 109int |
| 110ip_output(struct mbuf *m, struct mbuf *opt, struct route *ro, 111 int flags, struct ip_moptions *imo, struct inpcb *inp) | 110ip_output(struct mbuf *m, struct mbuf *opt, struct route *ro, int flags, 111 struct ip_moptions *imo, struct inpcb *inp) |
| 112{ 113 struct ip *ip; 114 struct ifnet *ifp = NULL; /* keep compiler happy */ 115 struct mbuf *m0; 116 int hlen = sizeof (struct ip); 117 int mtu; 118 int len, error = 0; 119 struct sockaddr_in *dst = NULL; /* keep compiler happy */ --- 501 unchanged lines hidden (view full) --- 621 * Return 0 if no error. If error, m_frag may contain a partially built 622 * chain of fragments that should be freed by the caller. 623 * 624 * if_hwassist_flags is the hw offload capabilities (see if_data.ifi_hwassist) 625 * sw_csum contains the delayed checksums flags (e.g., CSUM_DELAY_IP). 626 */ 627int 628ip_fragment(struct ip *ip, struct mbuf **m_frag, int mtu, | 112{ 113 struct ip *ip; 114 struct ifnet *ifp = NULL; /* keep compiler happy */ 115 struct mbuf *m0; 116 int hlen = sizeof (struct ip); 117 int mtu; 118 int len, error = 0; 119 struct sockaddr_in *dst = NULL; /* keep compiler happy */ --- 501 unchanged lines hidden (view full) --- 621 * Return 0 if no error. If error, m_frag may contain a partially built 622 * chain of fragments that should be freed by the caller. 623 * 624 * if_hwassist_flags is the hw offload capabilities (see if_data.ifi_hwassist) 625 * sw_csum contains the delayed checksums flags (e.g., CSUM_DELAY_IP). 626 */ 627int 628ip_fragment(struct ip *ip, struct mbuf **m_frag, int mtu, |
| 629 u_long if_hwassist_flags, int sw_csum) | 629 u_long if_hwassist_flags, int sw_csum) |
| 630{ 631 int error = 0; 632 int hlen = ip->ip_hl << 2; 633 int len = (mtu - hlen) & ~7; /* size of payload in each fragment */ 634 int off; 635 struct mbuf *m0 = *m_frag; /* the original packet */ 636 int firstlen; 637 struct mbuf **mnext; --- 171 unchanged lines hidden (view full) --- 809 } 810 *(u_short *)(m->m_data + offset) = csum; 811} 812 813/* 814 * IP socket option processing. 815 */ 816int | 630{ 631 int error = 0; 632 int hlen = ip->ip_hl << 2; 633 int len = (mtu - hlen) & ~7; /* size of payload in each fragment */ 634 int off; 635 struct mbuf *m0 = *m_frag; /* the original packet */ 636 int firstlen; 637 struct mbuf **mnext; --- 171 unchanged lines hidden (view full) --- 809 } 810 *(u_short *)(m->m_data + offset) = csum; 811} 812 813/* 814 * IP socket option processing. 815 */ 816int |
| 817ip_ctloutput(so, sopt) 818 struct socket *so; 819 struct sockopt *sopt; | 817ip_ctloutput(struct socket *so, struct sockopt *sopt) |
| 820{ 821 struct inpcb *inp = sotoinpcb(so); 822 int error, optval; 823 824 error = optval = 0; 825 if (sopt->sopt_level != IPPROTO_IP) { 826 return (EINVAL); 827 } --- 312 unchanged lines hidden (view full) --- 1140 * transmission, and one (IP_MULTICAST_TTL) totally duplicates a 1141 * standard option (IP_TTL). 1142 */ 1143 1144/* 1145 * following RFC1724 section 3.3, 0.0.0.0/8 is interpreted as interface index. 1146 */ 1147static struct ifnet * | 818{ 819 struct inpcb *inp = sotoinpcb(so); 820 int error, optval; 821 822 error = optval = 0; 823 if (sopt->sopt_level != IPPROTO_IP) { 824 return (EINVAL); 825 } --- 312 unchanged lines hidden (view full) --- 1138 * transmission, and one (IP_MULTICAST_TTL) totally duplicates a 1139 * standard option (IP_TTL). 1140 */ 1141 1142/* 1143 * following RFC1724 section 3.3, 0.0.0.0/8 is interpreted as interface index. 1144 */ 1145static struct ifnet * |
| 1148ip_multicast_if(a, ifindexp) 1149 struct in_addr *a; 1150 int *ifindexp; | 1146ip_multicast_if(struct in_addr *a, int *ifindexp) |
| 1151{ 1152 int ifindex; 1153 struct ifnet *ifp; 1154 1155 if (ifindexp) 1156 *ifindexp = 0; 1157 if (ntohl(a->s_addr) >> 24 == 0) { 1158 ifindex = ntohl(a->s_addr) & 0xffffff; --- 430 unchanged lines hidden (view full) --- 1589 1590 return (error); 1591} 1592 1593/* 1594 * Discard the IP multicast options. 1595 */ 1596void | 1147{ 1148 int ifindex; 1149 struct ifnet *ifp; 1150 1151 if (ifindexp) 1152 *ifindexp = 0; 1153 if (ntohl(a->s_addr) >> 24 == 0) { 1154 ifindex = ntohl(a->s_addr) & 0xffffff; --- 430 unchanged lines hidden (view full) --- 1585 1586 return (error); 1587} 1588 1589/* 1590 * Discard the IP multicast options. 1591 */ 1592void |
| 1597ip_freemoptions(imo) 1598 register struct ip_moptions *imo; | 1593ip_freemoptions(struct ip_moptions *imo) |
| 1599{ 1600 register int i; 1601 1602 if (imo != NULL) { 1603 for (i = 0; i < imo->imo_num_memberships; ++i) 1604 in_delmulti(imo->imo_membership[i]); 1605 free(imo->imo_membership, M_IPMOPTS); 1606 free(imo, M_IPMOPTS); 1607 } 1608} 1609 1610/* 1611 * Routine called from ip_output() to loop back a copy of an IP multicast 1612 * packet to the input queue of a specified interface. Note that this 1613 * calls the output routine of the loopback "driver", but with an interface 1614 * pointer that might NOT be a loopback interface -- evil, but easier than 1615 * replicating that code here. 1616 */ 1617static void | 1594{ 1595 register int i; 1596 1597 if (imo != NULL) { 1598 for (i = 0; i < imo->imo_num_memberships; ++i) 1599 in_delmulti(imo->imo_membership[i]); 1600 free(imo->imo_membership, M_IPMOPTS); 1601 free(imo, M_IPMOPTS); 1602 } 1603} 1604 1605/* 1606 * Routine called from ip_output() to loop back a copy of an IP multicast 1607 * packet to the input queue of a specified interface. Note that this 1608 * calls the output routine of the loopback "driver", but with an interface 1609 * pointer that might NOT be a loopback interface -- evil, but easier than 1610 * replicating that code here. 1611 */ 1612static void |
| 1618ip_mloopback(ifp, m, dst, hlen) 1619 struct ifnet *ifp; 1620 register struct mbuf *m; 1621 register struct sockaddr_in *dst; 1622 int hlen; | 1613ip_mloopback(struct ifnet *ifp, struct mbuf *m, struct sockaddr_in *dst, 1614 int hlen) |
| 1623{ 1624 register struct ip *ip; 1625 struct mbuf *copym; 1626 1627 copym = m_copy(m, 0, M_COPYALL); 1628 if (copym != NULL && (copym->m_flags & M_EXT || copym->m_len < hlen)) 1629 copym = m_pullup(copym, hlen); 1630 if (copym != NULL) { --- 44 unchanged lines hidden --- | 1615{ 1616 register struct ip *ip; 1617 struct mbuf *copym; 1618 1619 copym = m_copy(m, 0, M_COPYALL); 1620 if (copym != NULL && (copym->m_flags & M_EXT || copym->m_len < hlen)) 1621 copym = m_pullup(copym, hlen); 1622 if (copym != NULL) { --- 44 unchanged lines hidden --- |