Annotation of libaitio/example/bpf.c, revision 1.2
1.2 ! misho 1: #include <stdio.h>
! 2: #include <stdlib.h>
! 3: #include <fcntl.h>
! 4: #include <unistd.h>
! 5: #include <string.h>
! 6: #include <errno.h>
! 7: #include <poll.h>
! 8: #include <getopt.h>
! 9: #include <pthread.h>
! 10: #include <assert.h>
! 11: #include <sys/types.h>
! 12: #include <sys/param.h>
! 13: #include <sys/limits.h>
! 14: #include <sys/socket.h>
! 15: #include <sys/ioctl.h>
! 16: #include <sys/mman.h>
! 17: #include <net/if.h>
! 18: #include <net/bpf.h>
! 19: #include <machine/atomic.h>
! 20:
! 21: #ifdef __FreeBSD__
! 22: #include <net/ethernet.h>
! 23: #endif
! 24: #ifdef __OpenBSD__
! 25: #include <net/ethertypes.h>
! 26: #include <netinet/in_systm.h>
! 27: #endif
! 28: #include <net/if_arp.h>
! 29: #include <netinet/in.h>
! 30: #include <netinet/ip.h>
! 31: #include <netinet/ip6.h>
! 32: #include <netinet/udp.h>
! 33: #include <netinet/tcp.h>
! 34: #include <netinet/ip_icmp.h>
! 35: #include <arpa/inet.h>
! 36: #ifdef __OpenBSD__
! 37: #include <netinet/if_ether.h>
! 38: #endif
! 39:
! 40: #include <aitio.h>
! 41:
! 42: #ifndef roundup
! 43: #define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y)) /* to any y */
! 44: #endif
! 45:
! 46: #define time_spec_sub(vvp, uvp) \
! 47: do { \
! 48: (vvp)->tv_sec -= (uvp)->tv_sec; \
! 49: (vvp)->tv_nsec -= (uvp)->tv_nsec; \
! 50: if ((vvp)->tv_nsec < 0) { \
! 51: (vvp)->tv_sec--; \
! 52: (vvp)->tv_nsec += 1000000000; \
! 53: } \
! 54: } while (0)
! 55:
! 56:
! 57: int Verbose, flg;
! 58:
! 59:
! 60: static void *
! 61: ShowPkt(void *buffer)
! 62: {
! 63: char Proto = 0, szStr[BUFSIZ], szLine[BUFSIZ], szWrk[BUFSIZ], szShow[USHRT_MAX] = { 0 };
! 64: struct bpf_hdr *bpf = buffer;
! 65: #ifdef __FreeBSD__
! 66: struct bpf_zbuf_header *bzh = buffer;
! 67: struct icmphdr *icmp;
! 68: #endif
! 69: #ifdef __OpenBSD__
! 70: struct icmp *icmp;
! 71: #endif
! 72: struct ether_header *eth;
! 73: struct ip *ip;
! 74: struct ip6_hdr *ipv6;
! 75: struct arphdr *arp;
! 76: struct udphdr *udp;
! 77: struct tcphdr *tcp;
! 78:
! 79: assert(buffer);
! 80:
! 81: snprintf(szLine, BUFSIZ, "#Packet length: %d\n>>> Ethernet ...\n", bpf->bh_datalen);
! 82: strlcat(szShow, szLine, USHRT_MAX);
! 83: eth = (struct ether_header *) (buffer + bpf->bh_hdrlen);
! 84:
! 85: switch (ntohs(eth->ether_type)) {
! 86: case ETHERTYPE_ARP:
! 87: strlcpy(szWrk, "(ARP)", sizeof szWrk);
! 88: break;
! 89: case ETHERTYPE_IP:
! 90: strlcpy(szWrk, "(IP)", sizeof szWrk);
! 91: break;
! 92: case ETHERTYPE_IPV6:
! 93: strlcpy(szWrk, "(IPv6)", sizeof szWrk);
! 94: break;
! 95: default:
! 96: memset(szWrk, 0, sizeof szWrk);
! 97: }
! 98: snprintf(szStr, BUFSIZ, "%02x:%02x:%02x:%02x:%02x:%02x", eth->ether_shost[0], eth->ether_shost[1],
! 99: eth->ether_shost[2], eth->ether_shost[3], eth->ether_shost[4], eth->ether_shost[5]);
! 100: snprintf(szLine, BUFSIZ, "ether_type: %04x%s, src_mac: %s, ", ntohs(eth->ether_type), szWrk, szStr);
! 101: strlcat(szShow, szLine, USHRT_MAX);
! 102: snprintf(szStr, BUFSIZ, "%02x:%02x:%02x:%02x:%02x:%02x", eth->ether_dhost[0], eth->ether_dhost[1],
! 103: eth->ether_dhost[2], eth->ether_dhost[3], eth->ether_dhost[4], eth->ether_dhost[5]);
! 104: snprintf(szLine, BUFSIZ, "dst_mac: %s\n", szStr);
! 105: strlcat(szShow, szLine, USHRT_MAX);
! 106:
! 107: switch (ntohs(eth->ether_type)) {
! 108: case ETHERTYPE_ARP:
! 109: arp = (struct arphdr*) (((caddr_t) eth) + ETHER_HDR_LEN);
! 110: strlcat(szShow, "\t>>> ARP ...\n", USHRT_MAX);
! 111:
! 112: switch (ntohs(arp->ar_op)) {
! 113: case ARPOP_REQUEST:
! 114: strlcpy(szStr, "Request", sizeof szStr);
! 115: break;
! 116: case ARPOP_REPLY:
! 117: strlcpy(szStr, "Reply", sizeof szStr);
! 118: break;
! 119: case ARPOP_REVREQUEST:
! 120: strlcpy(szStr, "RevRequest", sizeof szStr);
! 121: break;
! 122: case ARPOP_REVREPLY:
! 123: strlcpy(szStr, "RevReply", sizeof szStr);
! 124: break;
! 125: case ARPOP_INVREQUEST:
! 126: strlcpy(szStr, "InvRequest", sizeof szStr);
! 127: break;
! 128: case ARPOP_INVREPLY:
! 129: strlcpy(szStr, "InvReply", sizeof szStr);
! 130: break;
! 131: default:
! 132: strlcpy(szStr, "*Unknown*", sizeof szStr);
! 133: }
! 134: snprintf(szLine, BUFSIZ, "\tAddr_fmt: %d, Proto_fmt: %d, Addr_len: %d, Proto_len: %d, %s\n",
! 135: ntohs(arp->ar_hrd), ntohs(arp->ar_pro), arp->ar_hln, arp->ar_pln, szStr);
! 136: strlcat(szShow, szLine, USHRT_MAX);
! 137: break;
! 138: case ETHERTYPE_IP:
! 139: ip = (struct ip*) (((caddr_t) eth) + ETHER_HDR_LEN);
! 140: strlcat(szShow, "\t>>> IP ...\n", USHRT_MAX);
! 141:
! 142: snprintf(szStr, BUFSIZ, "Frag_off: %d", ntohs(ip->ip_off) & IP_OFFMASK);
! 143: if (ntohs(ip->ip_off) & IP_RF)
! 144: strlcat(szStr, "|RF", sizeof szStr);
! 145: if (ntohs(ip->ip_off) & IP_DF)
! 146: strlcat(szStr, "|DF", sizeof szStr);
! 147: if (ntohs(ip->ip_off) & IP_MF)
! 148: strlcat(szStr, "|MF", sizeof szStr);
! 149: snprintf(szLine, BUFSIZ, "\tTOS: %02x, TTL: %d, ID: %04x, Cksum: %04x, Len: %d, %s\n",
! 150: ip->ip_tos, ip->ip_ttl, ntohs(ip->ip_id), ntohs(ip->ip_sum),
! 151: ntohs(ip->ip_len), szStr);
! 152: strlcat(szShow, szLine, USHRT_MAX);
! 153: snprintf(szLine, BUFSIZ, "\tProto: %d, Src_addr: %s, Dst_addr: %s\n",
! 154: ip->ip_p, inet_ntop(AF_INET, &ip->ip_src, szStr, BUFSIZ),
! 155: inet_ntop(AF_INET, &ip->ip_dst, szWrk, BUFSIZ));
! 156: strlcat(szShow, szLine, USHRT_MAX);
! 157:
! 158: Proto = ip->ip_p;
! 159: break;
! 160: case ETHERTYPE_IPV6:
! 161: ipv6 = (struct ip6_hdr*) (((caddr_t) eth) + ETHER_HDR_LEN);
! 162: strlcat(szShow, "\t>>> IPv6 ...\n", USHRT_MAX);
! 163:
! 164: snprintf(szLine, BUFSIZ, "\tHLim: %d, Payload_len: %d, Flow: %u\n", ipv6->ip6_hlim,
! 165: htons(ipv6->ip6_plen), htonl(ipv6->ip6_flow) & IPV6_FLOWLABEL_MASK);
! 166: strlcat(szShow, szLine, USHRT_MAX);
! 167: inet_ntop(AF_INET6, &ipv6->ip6_src, szStr, BUFSIZ);
! 168: inet_ntop(AF_INET6, &ipv6->ip6_dst, szWrk, BUFSIZ);
! 169: snprintf(szLine, BUFSIZ, "\tNext: %d, Src_addr: %s, Dst_addr: %s\n", ipv6->ip6_nxt, szStr, szWrk);
! 170: strlcat(szShow, szLine, USHRT_MAX);
! 171:
! 172: Proto = ipv6->ip6_nxt;
! 173: break;
! 174: }
! 175:
! 176: if (Proto && (ntohs(eth->ether_type) == ETHERTYPE_IP || ntohs(eth->ether_type) == ETHERTYPE_IPV6))
! 177: switch (Proto) {
! 178: case IPPROTO_TCP:
! 179: strlcat(szShow, "\t\t>>> TCP ...\n", USHRT_MAX);
! 180: if (ntohs(eth->ether_type) == ETHERTYPE_IPV6)
! 181: tcp = (struct tcphdr*) (((caddr_t) ipv6) + sizeof(struct ip6_hdr));
! 182: else
! 183: tcp = (struct tcphdr*) (((caddr_t) ip) + sizeof(struct ip));
! 184:
! 185: snprintf(szLine, BUFSIZ, "\t\tsrc_port: %d, dst_port: %d, seq: %u, ack: %u\n",
! 186: ntohs(tcp->th_sport), ntohs(tcp->th_dport), tcp->th_seq, tcp->th_ack);
! 187: strlcat(szShow, szLine, USHRT_MAX);
! 188: snprintf(szWrk, BUFSIZ, "%d", (u_char) tcp->th_off >> 4);
! 189: if (tcp->th_flags & TH_FIN)
! 190: strlcat(szWrk, "|FIN", sizeof szWrk);
! 191: if (tcp->th_flags & TH_SYN)
! 192: strlcat(szWrk, "|SYN", sizeof szWrk);
! 193: if (tcp->th_flags & TH_RST)
! 194: strlcat(szWrk, "|RST", sizeof szWrk);
! 195: if (tcp->th_flags & TH_PUSH)
! 196: strlcat(szWrk, "|PUSH", sizeof szWrk);
! 197: if (tcp->th_flags & TH_ACK)
! 198: strlcat(szWrk, "|ACK", sizeof szWrk);
! 199: if (tcp->th_flags & TH_URG)
! 200: strlcat(szWrk, "|URG", sizeof szWrk);
! 201: if (tcp->th_flags & TH_ECE)
! 202: strlcat(szWrk, "|ECE", sizeof szWrk);
! 203: if (tcp->th_flags & TH_CWR)
! 204: strlcat(szWrk, "|CWR", sizeof szWrk);
! 205: snprintf(szLine, BUFSIZ, "\t\toff: %s, win: %d, urp: %04x, cksum: %04x\n",
! 206: szWrk, ntohs(tcp->th_win), ntohs(tcp->th_urp), ntohs(tcp->th_sum));
! 207: strlcat(szShow, szLine, USHRT_MAX);
! 208: break;
! 209: case IPPROTO_UDP:
! 210: strlcat(szShow, "\t\t>>> UDP ...\n", USHRT_MAX);
! 211: if (ntohs(eth->ether_type) == ETHERTYPE_IPV6)
! 212: udp = (struct udphdr*) (((caddr_t) ipv6) + sizeof(struct ip6_hdr));
! 213: else
! 214: udp = (struct udphdr*) (((caddr_t) ip) + sizeof(struct ip));
! 215:
! 216: snprintf(szLine, BUFSIZ, "\t\tsrc_port: %d, dst_port: %d, len: %d, cksum: %04x\n",
! 217: ntohs(udp->uh_sport), ntohs(udp->uh_dport),
! 218: ntohs(udp->uh_ulen), ntohs(udp->uh_sum));
! 219: strlcat(szShow, szLine, USHRT_MAX);
! 220: break;
! 221: case IPPROTO_ICMP:
! 222: strlcat(szShow, "\t\t>>> ICMP ...\n", USHRT_MAX);
! 223: #ifdef __FreeBSD__
! 224: if (ntohs(eth->ether_type) == ETHERTYPE_IPV6)
! 225: icmp = (struct icmphdr*) (((caddr_t) ipv6) + sizeof(struct ip6_hdr));
! 226: else
! 227: icmp = (struct icmphdr*) (((caddr_t) ip) + sizeof(struct ip));
! 228: #endif
! 229: #ifdef __OpenBSD__
! 230: if (ntohs(eth->ether_type) == ETHERTYPE_IPV6)
! 231: icmp = (struct icmp*) (((caddr_t) ipv6) + sizeof(struct ip6_hdr));
! 232: else
! 233: icmp = (struct icmp*) (((caddr_t) ip) + sizeof(struct ip));
! 234: #endif
! 235:
! 236: snprintf(szLine, BUFSIZ, "\t\ttype: %d, code: %d: cksum: %04x\n",
! 237: icmp->icmp_type, icmp->icmp_code, ntohs(icmp->icmp_cksum));
! 238: strlcat(szShow, szLine, USHRT_MAX);
! 239: break;
! 240: }
! 241:
! 242: printf("%s===\n", szShow);
! 243: return NULL;
! 244: }
! 245:
! 246: // ----------------------
! 247:
! 248: int
! 249: main(int argc, char **argv)
! 250: {
! 251: u_int n, count = (u_int) -1;
! 252: register int i;
! 253: int dev, fd, ret, siz = 0;
! 254: char szStr[BUFSIZ], szMap[MAXPATHLEN] = { 0 }, *buffer = NULL;
! 255: struct ifreq ifr;
! 256: struct pollfd pfd = { 0 };
! 257: pthread_t tid;
! 258: char ch, mode = 'R';
! 259: struct timespec ts_start, ts_end;
! 260: void *bz = NULL;
! 261:
! 262: while ((ch = getopt(argc, argv, "hvwzs:p:f:")) != -1)
! 263: switch (ch) {
! 264: case 'w':
! 265: mode = 'W';
! 266: break;
! 267: case 's':
! 268: siz = strtol(optarg, NULL, 0);
! 269: break;
! 270: case 'p':
! 271: count = strtol(optarg, NULL, 0);
! 272: break;
! 273: case 'f':
! 274: strlcpy(szMap, optarg, sizeof szMap);
! 275: break;
! 276: case 'z':
! 277: flg++;
! 278: break;
! 279: case 'v':
! 280: Verbose++;
! 281: break;
! 282: case 'h':
! 283: default:
! 284: return 1;
! 285: }
! 286: argc -= optind;
! 287: argv += optind;
! 288: if (argc < 1)
! 289: return 1;
! 290:
! 291: if (**argv == '/')
! 292: strlcpy(szStr, strrchr(*argv, '/') + 1, sizeof szStr);
! 293: else
! 294: strlcpy(szStr, *argv, sizeof szStr);
! 295:
! 296: #ifdef __FreeBSD__
! 297: dev = io_etherOpen(szStr, O_RDWR | O_NONBLOCK, 42, (u_int*) &siz, (flg) ? &bz : NULL);
! 298: if (dev == -1)
! 299: dev = io_etherOpen(szStr, O_RDWR | O_NONBLOCK, 42, (u_int*) &siz, NULL);
! 300: #else
! 301: dev = io_etherOpen(szStr, O_RDWR, 42, (u_int*) &siz, NULL);
! 302: #endif
! 303: if (dev == -1) {
! 304: printf("Error:: #%d - %s\n", io_GetErrno(), io_GetError());
! 305: return 1;
! 306: } else
! 307: printf("dev=%d(%s)\n", dev, szStr);
! 308:
! 309: if (ioctl(dev, BIOCGBLEN, &siz) == -1) {
! 310: perror("ioctl(BIOCGBLEN)");
! 311: io_etherClose(dev, &bz);
! 312: return 1;
! 313: } else
! 314: printf("BPF buffer len=%d\n", siz);
! 315:
! 316: if (*szMap) {
! 317: fd = open(szMap, O_RDWR);
! 318: if (fd == -1) {
! 319: perror("open(map)");
! 320: io_etherClose(dev, &bz);
! 321: return 1;
! 322: }
! 323: buffer = mmap(NULL, siz, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
! 324: close(fd);
! 325: } else
! 326: buffer = mmap(NULL, siz, PROT_READ | PROT_WRITE, MAP_ANON, -1, 0);
! 327: if (buffer == MAP_FAILED) {
! 328: perror("mmap()");
! 329: io_etherClose(dev, &bz);
! 330: return 1;
! 331: }
! 332:
! 333: pfd.fd = dev;
! 334: assert(!clock_gettime(CLOCK_REALTIME, &ts_start));
! 335: if (mode == 'R') {
! 336: pfd.events = POLLIN;
! 337: for (i = 0; i < count; i++) {
! 338: if ((ret = poll(&pfd, 1, -1)) == -1)
! 339: break;
! 340:
! 341: ret = io_etherRecv(dev, buffer, siz, bz);
! 342: if (!ret)
! 343: continue;
! 344: if (ret == -1)
! 345: printf("%d) io_etherRecv(%d) #%d - %s\n", i, ret,
! 346: io_GetErrno(), io_GetError());
! 347: if (Verbose) {
! 348: printf("%d) +readed %d bytes\n", i, ret);
! 349: ShowPkt(buffer);
! 350: }
! 351: }
! 352: } else {
! 353: pfd.events = POLLOUT;
! 354: for (i = 0; i < count; i++) {
! 355: if (poll(&pfd, 1, -1) == -1)
! 356: break;
! 357:
! 358: ret = io_etherSend(dev, buffer, siz);
! 359: if (ret == -1)
! 360: printf("io_etherSend(%d) #%d - %s\n", ret, io_GetErrno(), io_GetError());
! 361: if (Verbose)
! 362: printf("+writed %d bytes\n", ret);
! 363: }
! 364: }
! 365: assert(!clock_gettime(CLOCK_REALTIME, &ts_end));
! 366:
! 367: munmap(buffer, siz);
! 368: io_etherClose(dev, &bz);
! 369:
! 370: time_spec_sub(&ts_end, &ts_start);
! 371: printf("%d.%09lu for %d iterations\n", ts_end.tv_sec, ts_end.tv_nsec, i);
! 372: ts_end.tv_sec *= 1000000000 / i;
! 373: printf("0.%09lu per/iteration\n", ts_end.tv_sec + ts_end.tv_nsec / i);
! 374: return 0;
! 375: }
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