| ip_reass.c (111541) | ip_reass.c (111888) |
|---|---|
| 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 --- 17 unchanged lines hidden (view full) --- 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 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 * @(#)ip_input.c 8.2 (Berkeley) 1/4/94 | 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 --- 17 unchanged lines hidden (view full) --- 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 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 * @(#)ip_input.c 8.2 (Berkeley) 1/4/94 |
| 34 * $FreeBSD: head/sys/netinet/ip_input.c 111541 2003-02-26 07:28:35Z silby $ | 34 * $FreeBSD: head/sys/netinet/ip_input.c 111888 2003-03-04 23:19:55Z jlemon $ |
| 35 */ 36 37#include "opt_bootp.h" 38#include "opt_ipfw.h" 39#include "opt_ipdn.h" 40#include "opt_ipdivert.h" 41#include "opt_ipfilter.h" 42#include "opt_ipstealth.h" --- 17 unchanged lines hidden (view full) --- 60 61#include <net/pfil.h> 62#include <net/if.h> 63#include <net/if_types.h> 64#include <net/if_var.h> 65#include <net/if_dl.h> 66#include <net/route.h> 67#include <net/netisr.h> | 35 */ 36 37#include "opt_bootp.h" 38#include "opt_ipfw.h" 39#include "opt_ipdn.h" 40#include "opt_ipdivert.h" 41#include "opt_ipfilter.h" 42#include "opt_ipstealth.h" --- 17 unchanged lines hidden (view full) --- 60 61#include <net/pfil.h> 62#include <net/if.h> 63#include <net/if_types.h> 64#include <net/if_var.h> 65#include <net/if_dl.h> 66#include <net/route.h> 67#include <net/netisr.h> |
| 68#include <net/intrq.h> | |
| 69 70#include <netinet/in.h> 71#include <netinet/in_systm.h> 72#include <netinet/in_var.h> 73#include <netinet/ip.h> 74#include <netinet/in_pcb.h> 75#include <netinet/ip_var.h> 76#include <netinet/ip_icmp.h> --- 74 unchanged lines hidden (view full) --- 151static int ip_checkinterface = 1; 152SYSCTL_INT(_net_inet_ip, OID_AUTO, check_interface, CTLFLAG_RW, 153 &ip_checkinterface, 0, "Verify packet arrives on correct interface"); 154 155#ifdef DIAGNOSTIC 156static int ipprintfs = 0; 157#endif 158 | 68 69#include <netinet/in.h> 70#include <netinet/in_systm.h> 71#include <netinet/in_var.h> 72#include <netinet/ip.h> 73#include <netinet/in_pcb.h> 74#include <netinet/ip_var.h> 75#include <netinet/ip_icmp.h> --- 74 unchanged lines hidden (view full) --- 150static int ip_checkinterface = 1; 151SYSCTL_INT(_net_inet_ip, OID_AUTO, check_interface, CTLFLAG_RW, 152 &ip_checkinterface, 0, "Verify packet arrives on correct interface"); 153 154#ifdef DIAGNOSTIC 155static int ipprintfs = 0; 156#endif 157 |
| 158static struct ifqueue ipintrq; |
|
| 159static int ipqmaxlen = IFQ_MAXLEN; 160 161extern struct domain inetdomain; 162extern struct protosw inetsw[]; 163u_char ip_protox[IPPROTO_MAX]; 164struct in_ifaddrhead in_ifaddrhead; /* first inet address */ 165struct in_ifaddrhashhead *in_ifaddrhashtbl; /* inet addr hash table */ 166u_long in_ifaddrhmask; /* mask for hash table */ --- 61 unchanged lines hidden (view full) --- 228static void save_rte(u_char *, struct in_addr); 229static int ip_dooptions(struct mbuf *m, int, 230 struct sockaddr_in *next_hop); 231static void ip_forward(struct mbuf *m, int srcrt, 232 struct sockaddr_in *next_hop); 233static void ip_freef(struct ipqhead *, struct ipq *); 234static struct mbuf *ip_reass(struct mbuf *, struct ipqhead *, 235 struct ipq *, u_int32_t *, u_int16_t *); | 159static int ipqmaxlen = IFQ_MAXLEN; 160 161extern struct domain inetdomain; 162extern struct protosw inetsw[]; 163u_char ip_protox[IPPROTO_MAX]; 164struct in_ifaddrhead in_ifaddrhead; /* first inet address */ 165struct in_ifaddrhashhead *in_ifaddrhashtbl; /* inet addr hash table */ 166u_long in_ifaddrhmask; /* mask for hash table */ --- 61 unchanged lines hidden (view full) --- 228static void save_rte(u_char *, struct in_addr); 229static int ip_dooptions(struct mbuf *m, int, 230 struct sockaddr_in *next_hop); 231static void ip_forward(struct mbuf *m, int srcrt, 232 struct sockaddr_in *next_hop); 233static void ip_freef(struct ipqhead *, struct ipq *); 234static struct mbuf *ip_reass(struct mbuf *, struct ipqhead *, 235 struct ipq *, u_int32_t *, u_int16_t *); |
| 236static void ipintr(void); | |
| 237 238/* 239 * IP initialization: fill in IP protocol switch table. 240 * All protocols not implemented in kernel go to raw IP protocol handler. 241 */ 242void 243ip_init() 244{ --- 19 unchanged lines hidden (view full) --- 264 maxnipq = nmbclusters / 32; 265 maxfragsperpacket = 16; 266 267#ifndef RANDOM_IP_ID 268 ip_id = time_second & 0xffff; 269#endif 270 ipintrq.ifq_maxlen = ipqmaxlen; 271 mtx_init(&ipintrq.ifq_mtx, "ip_inq", NULL, MTX_DEF); | 236 237/* 238 * IP initialization: fill in IP protocol switch table. 239 * All protocols not implemented in kernel go to raw IP protocol handler. 240 */ 241void 242ip_init() 243{ --- 19 unchanged lines hidden (view full) --- 263 maxnipq = nmbclusters / 32; 264 maxfragsperpacket = 16; 265 266#ifndef RANDOM_IP_ID 267 ip_id = time_second & 0xffff; 268#endif 269 ipintrq.ifq_maxlen = ipqmaxlen; 270 mtx_init(&ipintrq.ifq_mtx, "ip_inq", NULL, MTX_DEF); |
| 272 ipintrq_present = 1; 273 274 register_netisr(NETISR_IP, ipintr); | 271 netisr_register(NETISR_IP, ip_input, &ipintrq); |
| 275} 276 277/* 278 * XXX watch out this one. It is perhaps used as a cache for 279 * the most recently used route ? it is cleared in in_addroute() 280 * when a new route is successfully created. 281 */ 282struct route ipforward_rt; --- 663 unchanged lines hidden (view full) --- 946 } else 947 (*inetsw[ip_protox[ip->ip_p]].pr_input)(m, hlen); 948 return; 949bad: 950 m_freem(m); 951} 952 953/* | 272} 273 274/* 275 * XXX watch out this one. It is perhaps used as a cache for 276 * the most recently used route ? it is cleared in in_addroute() 277 * when a new route is successfully created. 278 */ 279struct route ipforward_rt; --- 663 unchanged lines hidden (view full) --- 943 } else 944 (*inetsw[ip_protox[ip->ip_p]].pr_input)(m, hlen); 945 return; 946bad: 947 m_freem(m); 948} 949 950/* |
| 954 * IP software interrupt routine - to go away sometime soon 955 */ 956static void 957ipintr(void) 958{ 959 struct mbuf *m; 960 961 while (1) { 962 IF_DEQUEUE(&ipintrq, m); 963 if (m == 0) 964 return; 965 ip_input(m); 966 } 967} 968 969/* | |
| 970 * Take incoming datagram fragment and try to reassemble it into 971 * whole datagram. If a chain for reassembly of this datagram already 972 * exists, then it is given as fp; otherwise have to make a chain. 973 * 974 * When IPDIVERT enabled, keep additional state with each packet that 975 * tells us if we need to divert or tee the packet we're building. 976 * In particular, *divinfo includes the port and TEE flag, 977 * *divert_rule is the number of the matching rule. --- 1222 unchanged lines hidden --- | 951 * Take incoming datagram fragment and try to reassemble it into 952 * whole datagram. If a chain for reassembly of this datagram already 953 * exists, then it is given as fp; otherwise have to make a chain. 954 * 955 * When IPDIVERT enabled, keep additional state with each packet that 956 * tells us if we need to divert or tee the packet we're building. 957 * In particular, *divinfo includes the port and TEE flag, 958 * *divert_rule is the number of the matching rule. --- 1222 unchanged lines hidden --- |