| udp.c (84221) | udp.c (92913) |
|---|---|
| 1/* Taken from $NetBSD: net.c,v 1.20 1997/12/26 22:41:30 scottr Exp $ */ 2 3/* 4 * Copyright (c) 1992 Regents of the University of California. 5 * All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and --- 26 unchanged lines hidden (view full) --- 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#) Header: net.c,v 1.9 93/08/06 19:32:15 leres Exp (LBL) 40 */ 41 42#include <sys/cdefs.h> | 1/* Taken from $NetBSD: net.c,v 1.20 1997/12/26 22:41:30 scottr Exp $ */ 2 3/* 4 * Copyright (c) 1992 Regents of the University of California. 5 * All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and --- 26 unchanged lines hidden (view full) --- 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#) Header: net.c,v 1.9 93/08/06 19:32:15 leres Exp (LBL) 40 */ 41 42#include <sys/cdefs.h> |
| 43__FBSDID("$FreeBSD: head/lib/libstand/udp.c 84221 2001-09-30 22:28:01Z dillon $"); | 43__FBSDID("$FreeBSD: head/lib/libstand/udp.c 92913 2002-03-21 23:39:28Z obrien $"); |
| 44 45#include <sys/param.h> 46#include <sys/socket.h> 47 48#include <string.h> 49 50#include <net/if.h> 51#include <netinet/in.h> --- 6 unchanged lines hidden (view full) --- 58#include <netinet/udp_var.h> 59 60#include "stand.h" 61#include "net.h" 62 63/* Caller must leave room for ethernet, ip and udp headers in front!! */ 64ssize_t 65sendudp(d, pkt, len) | 44 45#include <sys/param.h> 46#include <sys/socket.h> 47 48#include <string.h> 49 50#include <net/if.h> 51#include <netinet/in.h> --- 6 unchanged lines hidden (view full) --- 58#include <netinet/udp_var.h> 59 60#include "stand.h" 61#include "net.h" 62 63/* Caller must leave room for ethernet, ip and udp headers in front!! */ 64ssize_t 65sendudp(d, pkt, len) |
| 66 register struct iodesc *d; 67 register void *pkt; 68 register size_t len; | 66 struct iodesc *d; 67 void *pkt; 68 size_t len; |
| 69{ | 69{ |
| 70 register ssize_t cc; 71 register struct ip *ip; 72 register struct udphdr *uh; 73 register u_char *ea; | 70 ssize_t cc; 71 struct ip *ip; 72 struct udphdr *uh; 73 u_char *ea; |
| 74 75#ifdef NET_DEBUG 76 if (debug) { 77 printf("sendudp: d=%lx called.\n", (long)d); 78 if (d) { 79 printf("saddr: %s:%d", 80 inet_ntoa(d->myip), ntohs(d->myport)); 81 printf(" daddr: %s:%d\n", --- 18 unchanged lines hidden (view full) --- 100 ip->ip_sum = in_cksum(ip, sizeof(*ip)); /* short, but special */ 101 102 uh->uh_sport = d->myport; 103 uh->uh_dport = d->destport; 104 uh->uh_ulen = htons(len - sizeof(*ip)); 105 106#ifndef UDP_NO_CKSUM 107 { | 74 75#ifdef NET_DEBUG 76 if (debug) { 77 printf("sendudp: d=%lx called.\n", (long)d); 78 if (d) { 79 printf("saddr: %s:%d", 80 inet_ntoa(d->myip), ntohs(d->myport)); 81 printf(" daddr: %s:%d\n", --- 18 unchanged lines hidden (view full) --- 100 ip->ip_sum = in_cksum(ip, sizeof(*ip)); /* short, but special */ 101 102 uh->uh_sport = d->myport; 103 uh->uh_dport = d->destport; 104 uh->uh_ulen = htons(len - sizeof(*ip)); 105 106#ifndef UDP_NO_CKSUM 107 { |
| 108 register struct udpiphdr *ui; | 108 struct udpiphdr *ui; |
| 109 struct ip tip; 110 111 /* Calculate checksum (must save and restore ip header) */ 112 tip = *ip; 113 ui = (struct udpiphdr *)ip; 114 bzero(&ui->ui_x1, sizeof(ui->ui_x1)); 115 ui->ui_len = uh->uh_ulen; 116 uh->uh_sum = in_cksum(ui, len); --- 16 unchanged lines hidden (view full) --- 133} 134 135/* 136 * Receive a UDP packet and validate it is for us. 137 * Caller leaves room for the headers (Ether, IP, UDP) 138 */ 139ssize_t 140readudp(d, pkt, len, tleft) | 109 struct ip tip; 110 111 /* Calculate checksum (must save and restore ip header) */ 112 tip = *ip; 113 ui = (struct udpiphdr *)ip; 114 bzero(&ui->ui_x1, sizeof(ui->ui_x1)); 115 ui->ui_len = uh->uh_ulen; 116 uh->uh_sum = in_cksum(ui, len); --- 16 unchanged lines hidden (view full) --- 133} 134 135/* 136 * Receive a UDP packet and validate it is for us. 137 * Caller leaves room for the headers (Ether, IP, UDP) 138 */ 139ssize_t 140readudp(d, pkt, len, tleft) |
| 141 register struct iodesc *d; 142 register void *pkt; 143 register size_t len; | 141 struct iodesc *d; 142 void *pkt; 143 size_t len; |
| 144 time_t tleft; 145{ | 144 time_t tleft; 145{ |
| 146 register ssize_t n; 147 register size_t hlen; 148 register struct ip *ip; 149 register struct udphdr *uh; | 146 ssize_t n; 147 size_t hlen; 148 struct ip *ip; 149 struct udphdr *uh; |
| 150 u_int16_t etype; /* host order */ 151 152#ifdef NET_DEBUG 153 if (debug) 154 printf("readudp: called\n"); 155#endif 156 157 uh = (struct udphdr *)pkt - 1; --- 72 unchanged lines hidden (view full) --- 230 printf("readudp: bad dport %d != %d\n", 231 d->myport, ntohs(uh->uh_dport)); 232#endif 233 return -1; 234 } 235 236#ifndef UDP_NO_CKSUM 237 if (uh->uh_sum) { | 150 u_int16_t etype; /* host order */ 151 152#ifdef NET_DEBUG 153 if (debug) 154 printf("readudp: called\n"); 155#endif 156 157 uh = (struct udphdr *)pkt - 1; --- 72 unchanged lines hidden (view full) --- 230 printf("readudp: bad dport %d != %d\n", 231 d->myport, ntohs(uh->uh_dport)); 232#endif 233 return -1; 234 } 235 236#ifndef UDP_NO_CKSUM 237 if (uh->uh_sum) { |
| 238 register struct udpiphdr *ui; | 238 struct udpiphdr *ui; |
| 239 struct ip tip; 240 241 n = ntohs(uh->uh_ulen) + sizeof(*ip); 242 if (n > RECV_SIZE - ETHER_SIZE) { 243 printf("readudp: huge packet, udp len %d\n", (int)n); 244 return -1; 245 } 246 --- 29 unchanged lines hidden --- | 239 struct ip tip; 240 241 n = ntohs(uh->uh_ulen) + sizeof(*ip); 242 if (n > RECV_SIZE - ETHER_SIZE) { 243 printf("readudp: huge packet, udp len %d\n", (int)n); 244 return -1; 245 } 246 --- 29 unchanged lines hidden --- |