diff options
Diffstat (limited to 'freebsd/contrib/tcpdump/print-pgm.c')
| -rw-r--r-- | freebsd/contrib/tcpdump/print-pgm.c | 849 |
1 files changed, 849 insertions, 0 deletions
diff --git a/freebsd/contrib/tcpdump/print-pgm.c b/freebsd/contrib/tcpdump/print-pgm.c new file mode 100644 index 00000000..065cffc8 --- /dev/null +++ b/freebsd/contrib/tcpdump/print-pgm.c @@ -0,0 +1,849 @@ +#include <machine/rtems-bsd-user-space.h> + +/* + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code + * distributions retain the above copyright notice and this paragraph + * in its entirety, and (2) distributions including binary code include + * the above copyright notice and this paragraph in its entirety in + * the documentation or other materials provided with the distribution. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND + * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT + * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE. + * + * Original code by Andy Heffernan (ahh@juniper.net) + */ + +#ifndef lint +static const char rcsid[] _U_ = + "@(#) $Header: /tcpdump/master/tcpdump/print-pgm.c,v 1.5 2005-06-07 22:05:58 guy Exp $"; +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <tcpdump-stdinc.h> + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "interface.h" +#include "extract.h" +#include "addrtoname.h" + +#include "ip.h" +#ifdef INET6 +#include "ip6.h" +#endif +#include "ipproto.h" + +/* + * PGM header (RFC 3208) + */ +struct pgm_header { + u_int16_t pgm_sport; + u_int16_t pgm_dport; + u_int8_t pgm_type; + u_int8_t pgm_options; + u_int16_t pgm_sum; + u_int8_t pgm_gsid[6]; + u_int16_t pgm_length; +}; + +struct pgm_spm { + u_int32_t pgms_seq; + u_int32_t pgms_trailseq; + u_int32_t pgms_leadseq; + u_int16_t pgms_nla_afi; + u_int16_t pgms_reserved; + /* ... u_int8_t pgms_nla[0]; */ + /* ... options */ +}; + +struct pgm_nak { + u_int32_t pgmn_seq; + u_int16_t pgmn_source_afi; + u_int16_t pgmn_reserved; + /* ... u_int8_t pgmn_source[0]; */ + /* ... u_int16_t pgmn_group_afi */ + /* ... u_int16_t pgmn_reserved2; */ + /* ... u_int8_t pgmn_group[0]; */ + /* ... options */ +}; + +struct pgm_ack { + u_int32_t pgma_rx_max_seq; + u_int32_t pgma_bitmap; + /* ... options */ +}; + +struct pgm_poll { + u_int32_t pgmp_seq; + u_int16_t pgmp_round; + u_int16_t pgmp_reserved; + /* ... options */ +}; + +struct pgm_polr { + u_int32_t pgmp_seq; + u_int16_t pgmp_round; + u_int16_t pgmp_subtype; + u_int16_t pgmp_nla_afi; + u_int16_t pgmp_reserved; + /* ... u_int8_t pgmp_nla[0]; */ + /* ... options */ +}; + +struct pgm_data { + u_int32_t pgmd_seq; + u_int32_t pgmd_trailseq; + /* ... options */ +}; + +typedef enum _pgm_type { + PGM_SPM = 0, /* source path message */ + PGM_POLL = 1, /* POLL Request */ + PGM_POLR = 2, /* POLL Response */ + PGM_ODATA = 4, /* original data */ + PGM_RDATA = 5, /* repair data */ + PGM_NAK = 8, /* NAK */ + PGM_NULLNAK = 9, /* Null NAK */ + PGM_NCF = 10, /* NAK Confirmation */ + PGM_ACK = 11, /* ACK for congestion control */ + PGM_SPMR = 12, /* SPM request */ + PGM_MAX = 255 +} pgm_type; + +#define PGM_OPT_BIT_PRESENT 0x01 +#define PGM_OPT_BIT_NETWORK 0x02 +#define PGM_OPT_BIT_VAR_PKTLEN 0x40 +#define PGM_OPT_BIT_PARITY 0x80 + +#define PGM_OPT_LENGTH 0x00 +#define PGM_OPT_FRAGMENT 0x01 +#define PGM_OPT_NAK_LIST 0x02 +#define PGM_OPT_JOIN 0x03 +#define PGM_OPT_NAK_BO_IVL 0x04 +#define PGM_OPT_NAK_BO_RNG 0x05 + +#define PGM_OPT_REDIRECT 0x07 +#define PGM_OPT_PARITY_PRM 0x08 +#define PGM_OPT_PARITY_GRP 0x09 +#define PGM_OPT_CURR_TGSIZE 0x0A +#define PGM_OPT_NBR_UNREACH 0x0B +#define PGM_OPT_PATH_NLA 0x0C + +#define PGM_OPT_SYN 0x0D +#define PGM_OPT_FIN 0x0E +#define PGM_OPT_RST 0x0F +#define PGM_OPT_CR 0x10 +#define PGM_OPT_CRQST 0x11 + +#define PGM_OPT_PGMCC_DATA 0x12 +#define PGM_OPT_PGMCC_FEEDBACK 0x13 + +#define PGM_OPT_MASK 0x7f + +#define PGM_OPT_END 0x80 /* end of options marker */ + +#define PGM_MIN_OPT_LEN 4 + +#ifndef AFI_IP +#define AFI_IP 1 +#define AFI_IP6 2 +#endif + +void +pgm_print(register const u_char *bp, register u_int length, + register const u_char *bp2) +{ + register const struct pgm_header *pgm; + register const struct ip *ip; + register char ch; + u_int16_t sport, dport; + int addr_size; + const void *nla; + int nla_af; +#ifdef INET6 + char nla_buf[INET6_ADDRSTRLEN]; + register const struct ip6_hdr *ip6; +#else + char nla_buf[INET_ADDRSTRLEN]; +#endif + u_int8_t opt_type, opt_len, flags1, flags2; + u_int32_t seq, opts_len, len, offset; + + pgm = (struct pgm_header *)bp; + ip = (struct ip *)bp2; +#ifdef INET6 + if (IP_V(ip) == 6) + ip6 = (struct ip6_hdr *)bp2; + else + ip6 = NULL; +#else /* INET6 */ + if (IP_V(ip) == 6) { + (void)printf("Can't handle IPv6"); + return; + } +#endif /* INET6 */ + ch = '\0'; + if (!TTEST(pgm->pgm_dport)) { +#ifdef INET6 + if (ip6) { + (void)printf("%s > %s: [|pgm]", + ip6addr_string(&ip6->ip6_src), + ip6addr_string(&ip6->ip6_dst)); + return; + } else +#endif /* INET6 */ + { + (void)printf("%s > %s: [|pgm]", + ipaddr_string(&ip->ip_src), + ipaddr_string(&ip->ip_dst)); + return; + } + } + + sport = EXTRACT_16BITS(&pgm->pgm_sport); + dport = EXTRACT_16BITS(&pgm->pgm_dport); + +#ifdef INET6 + if (ip6) { + if (ip6->ip6_nxt == IPPROTO_PGM) { + (void)printf("%s.%s > %s.%s: ", + ip6addr_string(&ip6->ip6_src), + tcpport_string(sport), + ip6addr_string(&ip6->ip6_dst), + tcpport_string(dport)); + } else { + (void)printf("%s > %s: ", + tcpport_string(sport), tcpport_string(dport)); + } + } else +#endif /*INET6*/ + { + if (ip->ip_p == IPPROTO_PGM) { + (void)printf("%s.%s > %s.%s: ", + ipaddr_string(&ip->ip_src), + tcpport_string(sport), + ipaddr_string(&ip->ip_dst), + tcpport_string(dport)); + } else { + (void)printf("%s > %s: ", + tcpport_string(sport), tcpport_string(dport)); + } + } + + TCHECK(*pgm); + + (void)printf("PGM, length %u", pgm->pgm_length); + + if (!vflag) + return; + + if (length > pgm->pgm_length) + length = pgm->pgm_length; + + (void)printf(" 0x%02x%02x%02x%02x%02x%02x ", + pgm->pgm_gsid[0], + pgm->pgm_gsid[1], + pgm->pgm_gsid[2], + pgm->pgm_gsid[3], + pgm->pgm_gsid[4], + pgm->pgm_gsid[5]); + switch (pgm->pgm_type) { + case PGM_SPM: { + struct pgm_spm *spm; + + spm = (struct pgm_spm *)(pgm + 1); + TCHECK(*spm); + + switch (EXTRACT_16BITS(&spm->pgms_nla_afi)) { + case AFI_IP: + addr_size = sizeof(struct in_addr); + nla_af = AF_INET; + break; +#ifdef INET6 + case AFI_IP6: + addr_size = sizeof(struct in6_addr); + nla_af = AF_INET6; + break; +#endif + default: + goto trunc; + break; + } + bp = (u_char *) (spm + 1); + TCHECK2(*bp, addr_size); + nla = bp; + bp += addr_size; + + inet_ntop(nla_af, nla, nla_buf, sizeof(nla_buf)); + (void)printf("SPM seq %u trail %u lead %u nla %s", + EXTRACT_32BITS(&spm->pgms_seq), + EXTRACT_32BITS(&spm->pgms_trailseq), + EXTRACT_32BITS(&spm->pgms_leadseq), + nla_buf); + break; + } + + case PGM_POLL: { + struct pgm_poll *poll; + + poll = (struct pgm_poll *)(pgm + 1); + TCHECK(*poll); + (void)printf("POLL seq %u round %u", + EXTRACT_32BITS(&poll->pgmp_seq), + EXTRACT_16BITS(&poll->pgmp_round)); + bp = (u_char *) (poll + 1); + break; + } + case PGM_POLR: { + struct pgm_polr *polr; + u_int32_t ivl, rnd, mask; + + polr = (struct pgm_polr *)(pgm + 1); + TCHECK(*polr); + + switch (EXTRACT_16BITS(&polr->pgmp_nla_afi)) { + case AFI_IP: + addr_size = sizeof(struct in_addr); + nla_af = AF_INET; + break; +#ifdef INET6 + case AFI_IP6: + addr_size = sizeof(struct in6_addr); + nla_af = AF_INET6; + break; +#endif + default: + goto trunc; + break; + } + bp = (u_char *) (polr + 1); + TCHECK2(*bp, addr_size); + nla = bp; + bp += addr_size; + + inet_ntop(nla_af, nla, nla_buf, sizeof(nla_buf)); + + TCHECK2(*bp, sizeof(u_int32_t)); + ivl = EXTRACT_32BITS(bp); + bp += sizeof(u_int32_t); + + TCHECK2(*bp, sizeof(u_int32_t)); + rnd = EXTRACT_32BITS(bp); + bp += sizeof(u_int32_t); + + TCHECK2(*bp, sizeof(u_int32_t)); + mask = EXTRACT_32BITS(bp); + bp += sizeof(u_int32_t); + + (void)printf("POLR seq %u round %u nla %s ivl %u rnd 0x%08x " + "mask 0x%08x", EXTRACT_32BITS(&polr->pgmp_seq), + EXTRACT_16BITS(&polr->pgmp_round), nla_buf, ivl, rnd, mask); + break; + } + case PGM_ODATA: { + struct pgm_data *odata; + + odata = (struct pgm_data *)(pgm + 1); + TCHECK(*odata); + (void)printf("ODATA trail %u seq %u", + EXTRACT_32BITS(&odata->pgmd_trailseq), + EXTRACT_32BITS(&odata->pgmd_seq)); + bp = (u_char *) (odata + 1); + break; + } + + case PGM_RDATA: { + struct pgm_data *rdata; + + rdata = (struct pgm_data *)(pgm + 1); + TCHECK(*rdata); + (void)printf("RDATA trail %u seq %u", + EXTRACT_32BITS(&rdata->pgmd_trailseq), + EXTRACT_32BITS(&rdata->pgmd_seq)); + bp = (u_char *) (rdata + 1); + break; + } + + case PGM_NAK: + case PGM_NULLNAK: + case PGM_NCF: { + struct pgm_nak *nak; + const void *source, *group; + int source_af, group_af; +#ifdef INET6 + char source_buf[INET6_ADDRSTRLEN], group_buf[INET6_ADDRSTRLEN]; +#else + char source_buf[INET_ADDRSTRLEN], group_buf[INET_ADDRSTRLEN]; +#endif + + nak = (struct pgm_nak *)(pgm + 1); + TCHECK(*nak); + + /* + * Skip past the source, saving info along the way + * and stopping if we don't have enough. + */ + switch (EXTRACT_16BITS(&nak->pgmn_source_afi)) { + case AFI_IP: + addr_size = sizeof(struct in_addr); + source_af = AF_INET; + break; +#ifdef INET6 + case AFI_IP6: + addr_size = sizeof(struct in6_addr); + source_af = AF_INET6; + break; +#endif + default: + goto trunc; + break; + } + bp = (u_char *) (nak + 1); + TCHECK2(*bp, addr_size); + source = bp; + bp += addr_size; + + /* + * Skip past the group, saving info along the way + * and stopping if we don't have enough. + */ + switch (EXTRACT_16BITS(bp)) { + case AFI_IP: + addr_size = sizeof(struct in_addr); + group_af = AF_INET; + break; +#ifdef INET6 + case AFI_IP6: + addr_size = sizeof(struct in6_addr); + group_af = AF_INET6; + break; +#endif + default: + goto trunc; + break; + } + bp += (2 * sizeof(u_int16_t)); + TCHECK2(*bp, addr_size); + group = bp; + bp += addr_size; + + /* + * Options decoding can go here. + */ + inet_ntop(source_af, source, source_buf, sizeof(source_buf)); + inet_ntop(group_af, group, group_buf, sizeof(group_buf)); + switch (pgm->pgm_type) { + case PGM_NAK: + (void)printf("NAK "); + break; + case PGM_NULLNAK: + (void)printf("NNAK "); + break; + case PGM_NCF: + (void)printf("NCF "); + break; + default: + break; + } + (void)printf("(%s -> %s), seq %u", + source_buf, group_buf, EXTRACT_32BITS(&nak->pgmn_seq)); + break; + } + + case PGM_ACK: { + struct pgm_ack *ack; + + ack = (struct pgm_ack *)(pgm + 1); + TCHECK(*ack); + (void)printf("ACK seq %u", + EXTRACT_32BITS(&ack->pgma_rx_max_seq)); + bp = (u_char *) (ack + 1); + break; + } + + case PGM_SPMR: + (void)printf("SPMR"); + break; + + default: + (void)printf("UNKNOWN type %0x02x", pgm->pgm_type); + break; + + } + if (pgm->pgm_options & PGM_OPT_BIT_PRESENT) { + + /* + * make sure there's enough for the first option header + */ + if (!TTEST2(*bp, PGM_MIN_OPT_LEN)) { + (void)printf("[|OPT]"); + return; + } + + /* + * That option header MUST be an OPT_LENGTH option + * (see the first paragraph of section 9.1 in RFC 3208). + */ + opt_type = *bp++; + if ((opt_type & PGM_OPT_MASK) != PGM_OPT_LENGTH) { + (void)printf("[First option bad, should be PGM_OPT_LENGTH, is %u]", opt_type & PGM_OPT_MASK); + return; + } + opt_len = *bp++; + if (opt_len != 4) { + (void)printf("[Bad OPT_LENGTH option, length %u != 4]", opt_len); + return; + } + opts_len = EXTRACT_16BITS(bp); + if (opts_len < 4) { + (void)printf("[Bad total option length %u < 4]", opts_len); + return; + } + bp += sizeof(u_int16_t); + (void)printf(" OPTS LEN %d", opts_len); + opts_len -= 4; + + while (opts_len) { + if (opts_len < PGM_MIN_OPT_LEN) { + (void)printf("[Total option length leaves no room for final option]"); + return; + } + opt_type = *bp++; + opt_len = *bp++; + if (opt_len < PGM_MIN_OPT_LEN) { + (void)printf("[Bad option, length %u < %u]", opt_len, + PGM_MIN_OPT_LEN); + break; + } + if (opts_len < opt_len) { + (void)printf("[Total option length leaves no room for final option]"); + return; + } + if (!TTEST2(*bp, opt_len - 2)) { + (void)printf(" [|OPT]"); + return; + } + + switch (opt_type & PGM_OPT_MASK) { + case PGM_OPT_LENGTH: + if (opt_len != 4) { + (void)printf("[Bad OPT_LENGTH option, length %u != 4]", opt_len); + return; + } + (void)printf(" OPTS LEN (extra?) %d", EXTRACT_16BITS(bp)); + bp += sizeof(u_int16_t); + opts_len -= 4; + break; + + case PGM_OPT_FRAGMENT: + if (opt_len != 16) { + (void)printf("[Bad OPT_FRAGMENT option, length %u != 16]", opt_len); + return; + } + flags1 = *bp++; + flags2 = *bp++; + seq = EXTRACT_32BITS(bp); + bp += sizeof(u_int32_t); + offset = EXTRACT_32BITS(bp); + bp += sizeof(u_int32_t); + len = EXTRACT_32BITS(bp); + bp += sizeof(u_int32_t); + (void)printf(" FRAG seq %u off %u len %u", seq, offset, len); + opts_len -= 16; + break; + + case PGM_OPT_NAK_LIST: + flags1 = *bp++; + flags2 = *bp++; + opt_len -= sizeof(u_int32_t); /* option header */ + (void)printf(" NAK LIST"); + while (opt_len) { + if (opt_len < sizeof(u_int32_t)) { + (void)printf("[Option length not a multiple of 4]"); + return; + } + TCHECK2(*bp, sizeof(u_int32_t)); + (void)printf(" %u", EXTRACT_32BITS(bp)); + bp += sizeof(u_int32_t); + opt_len -= sizeof(u_int32_t); + opts_len -= sizeof(u_int32_t); + } + break; + + case PGM_OPT_JOIN: + if (opt_len != 8) { + (void)printf("[Bad OPT_JOIN option, length %u != 8]", opt_len); + return; + } + flags1 = *bp++; + flags2 = *bp++; + seq = EXTRACT_32BITS(bp); + bp += sizeof(u_int32_t); + (void)printf(" JOIN %u", seq); + opts_len -= 8; + break; + + case PGM_OPT_NAK_BO_IVL: + if (opt_len != 12) { + (void)printf("[Bad OPT_NAK_BO_IVL option, length %u != 12]", opt_len); + return; + } + flags1 = *bp++; + flags2 = *bp++; + offset = EXTRACT_32BITS(bp); + bp += sizeof(u_int32_t); + seq = EXTRACT_32BITS(bp); + bp += sizeof(u_int32_t); + (void)printf(" BACKOFF ivl %u ivlseq %u", offset, seq); + opts_len -= 12; + break; + + case PGM_OPT_NAK_BO_RNG: + if (opt_len != 12) { + (void)printf("[Bad OPT_NAK_BO_RNG option, length %u != 12]", opt_len); + return; + } + flags1 = *bp++; + flags2 = *bp++; + offset = EXTRACT_32BITS(bp); + bp += sizeof(u_int32_t); + seq = EXTRACT_32BITS(bp); + bp += sizeof(u_int32_t); + (void)printf(" BACKOFF max %u min %u", offset, seq); + opts_len -= 12; + break; + + case PGM_OPT_REDIRECT: + flags1 = *bp++; + flags2 = *bp++; + switch (EXTRACT_16BITS(bp)) { + case AFI_IP: + addr_size = sizeof(struct in_addr); + nla_af = AF_INET; + break; +#ifdef INET6 + case AFI_IP6: + addr_size = sizeof(struct in6_addr); + nla_af = AF_INET6; + break; +#endif + default: + goto trunc; + break; + } + bp += (2 * sizeof(u_int16_t)); + if (opt_len != 4 + addr_size) { + (void)printf("[Bad OPT_REDIRECT option, length %u != 4 + address size]", opt_len); + return; + } + TCHECK2(*bp, addr_size); + nla = bp; + bp += addr_size; + + inet_ntop(nla_af, nla, nla_buf, sizeof(nla_buf)); + (void)printf(" REDIRECT %s", (char *)nla); + opts_len -= 4 + addr_size; + break; + + case PGM_OPT_PARITY_PRM: + if (opt_len != 8) { + (void)printf("[Bad OPT_PARITY_PRM option, length %u != 8]", opt_len); + return; + } + flags1 = *bp++; + flags2 = *bp++; + len = EXTRACT_32BITS(bp); + bp += sizeof(u_int32_t); + (void)printf(" PARITY MAXTGS %u", len); + opts_len -= 8; + break; + + case PGM_OPT_PARITY_GRP: + if (opt_len != 8) { + (void)printf("[Bad OPT_PARITY_GRP option, length %u != 8]", opt_len); + return; + } + flags1 = *bp++; + flags2 = *bp++; + seq = EXTRACT_32BITS(bp); + bp += sizeof(u_int32_t); + (void)printf(" PARITY GROUP %u", seq); + opts_len -= 8; + break; + + case PGM_OPT_CURR_TGSIZE: + if (opt_len != 8) { + (void)printf("[Bad OPT_CURR_TGSIZE option, length %u != 8]", opt_len); + return; + } + flags1 = *bp++; + flags2 = *bp++; + len = EXTRACT_32BITS(bp); + bp += sizeof(u_int32_t); + (void)printf(" PARITY ATGS %u", len); + opts_len -= 8; + break; + + case PGM_OPT_NBR_UNREACH: + if (opt_len != 4) { + (void)printf("[Bad OPT_NBR_UNREACH option, length %u != 4]", opt_len); + return; + } + flags1 = *bp++; + flags2 = *bp++; + (void)printf(" NBR_UNREACH"); + opts_len -= 4; + break; + + case PGM_OPT_PATH_NLA: + (void)printf(" PATH_NLA [%d]", opt_len); + bp += opt_len; + opts_len -= opt_len; + break; + + case PGM_OPT_SYN: + if (opt_len != 4) { + (void)printf("[Bad OPT_SYN option, length %u != 4]", opt_len); + return; + } + flags1 = *bp++; + flags2 = *bp++; + (void)printf(" SYN"); + opts_len -= 4; + break; + + case PGM_OPT_FIN: + if (opt_len != 4) { + (void)printf("[Bad OPT_FIN option, length %u != 4]", opt_len); + return; + } + flags1 = *bp++; + flags2 = *bp++; + (void)printf(" FIN"); + opts_len -= 4; + break; + + case PGM_OPT_RST: + if (opt_len != 4) { + (void)printf("[Bad OPT_RST option, length %u != 4]", opt_len); + return; + } + flags1 = *bp++; + flags2 = *bp++; + (void)printf(" RST"); + opts_len -= 4; + break; + + case PGM_OPT_CR: + (void)printf(" CR"); + bp += opt_len; + opts_len -= opt_len; + break; + + case PGM_OPT_CRQST: + if (opt_len != 4) { + (void)printf("[Bad OPT_CRQST option, length %u != 4]", opt_len); + return; + } + flags1 = *bp++; + flags2 = *bp++; + (void)printf(" CRQST"); + opts_len -= 4; + break; + + case PGM_OPT_PGMCC_DATA: + flags1 = *bp++; + flags2 = *bp++; + offset = EXTRACT_32BITS(bp); + bp += sizeof(u_int32_t); + switch (EXTRACT_16BITS(bp)) { + case AFI_IP: + addr_size = sizeof(struct in_addr); + nla_af = AF_INET; + break; +#ifdef INET6 + case AFI_IP6: + addr_size = sizeof(struct in6_addr); + nla_af = AF_INET6; + break; +#endif + default: + goto trunc; + break; + } + bp += (2 * sizeof(u_int16_t)); + if (opt_len != 12 + addr_size) { + (void)printf("[Bad OPT_PGMCC_DATA option, length %u != 12 + address size]", opt_len); + return; + } + TCHECK2(*bp, addr_size); + nla = bp; + bp += addr_size; + + inet_ntop(nla_af, nla, nla_buf, sizeof(nla_buf)); + (void)printf(" PGMCC DATA %u %s", offset, (char*)nla); + opts_len -= 16; + break; + + case PGM_OPT_PGMCC_FEEDBACK: + flags1 = *bp++; + flags2 = *bp++; + offset = EXTRACT_32BITS(bp); + bp += sizeof(u_int32_t); + switch (EXTRACT_16BITS(bp)) { + case AFI_IP: + addr_size = sizeof(struct in_addr); + nla_af = AF_INET; + break; +#ifdef INET6 + case AFI_IP6: + addr_size = sizeof(struct in6_addr); + nla_af = AF_INET6; + break; +#endif + default: + goto trunc; + break; + } + bp += (2 * sizeof(u_int16_t)); + if (opt_len != 12 + addr_size) { + (void)printf("[Bad OPT_PGMCC_FEEDBACK option, length %u != 12 + address size]", opt_len); + return; + } + TCHECK2(*bp, addr_size); + nla = bp; + bp += addr_size; + + inet_ntop(nla_af, nla, nla_buf, sizeof(nla_buf)); + (void)printf(" PGMCC FEEDBACK %u %s", offset, (char*)nla); + opts_len -= 16; + break; + + default: + (void)printf(" OPT_%02X [%d] ", opt_type, opt_len); + bp += opt_len; + opts_len -= opt_len; + break; + } + + if (opt_type & PGM_OPT_END) + break; + } + } + + (void)printf(" [%u]", EXTRACT_16BITS(&pgm->pgm_length)); + + return; + +trunc: + fputs("[|pgm]", stdout); + if (ch != '\0') + putchar('>'); +} |