C++ EXTRACT_24BITS函数代码示例

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本文整理汇总了C++中EXTRACT_24BITS函数的典型用法代码示例。如果您正苦于以下问题：C++ EXTRACT_24BITS函数的具体用法？C++ EXTRACT_24BITS怎么用？C++ EXTRACT_24BITS使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了EXTRACT_24BITS函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: otv_print

void
otv_print(netdissect_options *ndo, const u_char *bp, u_int len)
{
    uint8_t flags;

    ND_PRINT((ndo, "OTV, "));
    if (len < 8)
        goto trunc;

    ND_TCHECK(*bp);
    flags = *bp;
    ND_PRINT((ndo, "flags [%s] (0x%02x), ", flags & 0x08 ? "I" : ".", flags));
    bp += 1;

    ND_TCHECK2(*bp, 3);
    ND_PRINT((ndo, "overlay %u, ", EXTRACT_24BITS(bp)));
    bp += 3;

    ND_TCHECK2(*bp, 3);
    ND_PRINT((ndo, "instance %u\n", EXTRACT_24BITS(bp)));
    bp += 3;

    /* Reserved */
    ND_TCHECK(*bp);
    bp += 1;

    ether_print(ndo, bp, len - 8, ndo->ndo_snapend - bp, NULL, NULL);
    return;

trunc:
    ND_PRINT((ndo, " [|OTV]"));
}

开发者ID:RTEMS，项目名称:rtems-libbsd，代码行数:32，代码来源:print-otv.c

示例2: igrp_entry_print

static void
igrp_entry_print(register struct igrprte *igr, register int is_interior,
    register int is_exterior)
{
	register u_int delay, bandwidth;
	u_int metric, mtu;

	if (is_interior)
		printf(" *.%d.%d.%d", igr->igr_net[0],
		    igr->igr_net[1], igr->igr_net[2]);
	else if (is_exterior)
		printf(" X%d.%d.%d.0", igr->igr_net[0],
		    igr->igr_net[1], igr->igr_net[2]);
	else
		printf(" %d.%d.%d.0", igr->igr_net[0],
		    igr->igr_net[1], igr->igr_net[2]);

	delay = EXTRACT_24BITS(igr->igr_dly);
	bandwidth = EXTRACT_24BITS(igr->igr_bw);
	metric = bandwidth + delay;
	if (metric > 0xffffff)
		metric = 0xffffff;
	mtu = EXTRACT_16BITS(igr->igr_mtu);

	printf(" d=%d b=%d r=%d l=%d M=%d mtu=%d in %d hops",
	    10 * delay, bandwidth == 0 ? 0 : 10000000 / bandwidth,
	    igr->igr_rel, igr->igr_ld, metric,
	    mtu, igr->igr_hct);
}

开发者ID:hsluoyz，项目名称:WinDump，代码行数:29，代码来源:print-igrp.c

示例3: juniper_services_print

u_int
juniper_services_print(const struct pcap_pkthdr *h, register const u_char *p)
{
        struct juniper_l2info_t l2info;
        struct juniper_services_header {
            u_int8_t svc_id;
            u_int8_t flags_len;
            u_int8_t svc_set_id[2];
            u_int8_t dir_iif[4];
        };
        const struct juniper_services_header *sh;

        l2info.pictype = DLT_JUNIPER_SERVICES;
        if(juniper_parse_header(p, h, &l2info) == 0)
            return l2info.header_len;

        p+=l2info.header_len;
        sh = (struct juniper_services_header *)p;

        if (eflag)
            printf("service-id %u flags 0x%02x service-set-id 0x%04x iif %u: ",
                   sh->svc_id,
                   sh->flags_len,
                   EXTRACT_16BITS(&sh->svc_set_id),
                   EXTRACT_24BITS(&sh->dir_iif[1]));

        
        ip_heuristic_guess(p, l2info.length);

        return l2info.header_len;
}

开发者ID:qtekfun，项目名称:htcDesire820Kernel，代码行数:31，代码来源:print-juniper.c

示例4: juniper_services_print

u_int
juniper_services_print(netdissect_options *ndo,
                       const struct pcap_pkthdr *h, register const u_char *p)
{
        struct juniper_l2info_t l2info;
        struct juniper_services_header {
            uint8_t svc_id;
            uint8_t flags_len;
            uint8_t svc_set_id[2];
            uint8_t dir_iif[4];
        };
        const struct juniper_services_header *sh;

        l2info.pictype = DLT_JUNIPER_SERVICES;
        if (juniper_parse_header(ndo, p, h, &l2info) == 0)
            return l2info.header_len;

        p+=l2info.header_len;
        sh = (struct juniper_services_header *)p;

        if (ndo->ndo_eflag)
            ND_PRINT((ndo, "service-id %u flags 0x%02x service-set-id 0x%04x iif %u: ",
                   sh->svc_id,
                   sh->flags_len,
                   EXTRACT_16BITS(&sh->svc_set_id),
                   EXTRACT_24BITS(&sh->dir_iif[1])));

        /* no proto field - lets guess by first byte of IP header*/
        ip_heuristic_guess (ndo, p, l2info.length);

        return l2info.header_len;
}

开发者ID:bdrewery，项目名称:tcpdump，代码行数:32，代码来源:print-juniper.c

示例5: dccp_print_ack_no

static void dccp_print_ack_no(const u_char *bp)
{
	const struct dccp_hdr *dh = (const struct dccp_hdr *)bp;
	const struct dccp_hdr_ack_bits *dh_ack =
		(struct dccp_hdr_ack_bits *)(bp + dccp_basic_hdr_len(dh));
	u_int32_t ack_high;
	u_int64_t ackno;

	TCHECK2(*dh_ack,4);
	ack_high = DCCPH_ACK(dh_ack);
	ackno = EXTRACT_24BITS(&ack_high) & 0xFFFFFF;

	if (DCCPH_X(dh) != 0) {
		u_int32_t ack_low;

		TCHECK2(*dh_ack,8);
		ack_low = dh_ack->dccph_ack_nr_low;

		ackno &= 0x00FFFF;  /* clear reserved field */
		ackno = (ackno << 32) + EXTRACT_32BITS(&ack_low);
	}

	(void)printf("(ack=%" PRIu64 ") ", ackno);
trunc:
	return;
}

开发者ID:IAmAnubhavSaini，项目名称:tcpdump，代码行数:26，代码来源:print-dccp.c

示例6: sig_print

static void
sig_print(const u_char *p, int caplen)
{
	bpf_u_int32 call_ref;

	if (caplen < PROTO_POS) {
		printf("[|atm]");
		return;
	}
	if (p[PROTO_POS] == Q2931) {
		/*
		 * protocol:Q.2931 for User to Network Interface 
		 * (UNI 3.1) signalling
		 */
		printf("Q.2931");
		if (caplen < MSG_TYPE_POS) {
			printf(" [|atm]");
			return;
		}
		printf(":%s ",
		    tok2str(msgtype2str, "msgtype#%d", p[MSG_TYPE_POS]));

		/*
		 * The call reference comes before the message type,
		 * so if we know we have the message type, which we
		 * do from the caplen test above, we also know we have
		 * the call reference.
		 */
		call_ref = EXTRACT_24BITS(&p[CALL_REF_POS]);
		printf("CALL_REF:0x%06x", call_ref);
	} else {
		/* SCCOP with some unknown protocol atop it */
		printf("SSCOP, proto %d ", p[PROTO_POS]);
	}
}

开发者ID:ele7enxxh，项目名称:dtrace-pf，代码行数:35，代码来源:print-atm.c

示例7: vxlan_print

void
vxlan_print(netdissect_options *ndo, const u_char *bp, u_int len)
{
    uint8_t flags;
    uint32_t vni;

    if (len < VXLAN_HDR_LEN)
        goto trunc;

    ND_TCHECK2(*bp, VXLAN_HDR_LEN);

    flags = *bp;
    bp += 4;

    vni = EXTRACT_24BITS(bp);
    bp += 4;

    ND_PRINT((ndo, "VXLAN, "));
    ND_PRINT((ndo, "flags [%s] (0x%02x), ", flags & 0x08 ? "I" : ".", flags));
    ND_PRINT((ndo, "vni %u\n", vni));

    ether_print(ndo, bp, len - VXLAN_HDR_LEN, len - VXLAN_HDR_LEN, NULL, NULL);

    return;

trunc:
    ND_PRINT((ndo, "%s", tstr));
}

开发者ID:GerardGarcia，项目名称:tcpdump，代码行数:28，代码来源:print-vxlan.c

示例8: sig_print

static void
sig_print(const u_char *p, int caplen)
{
	bpf_u_int32 call_ref;

	if (caplen < PROTO_POS) {
		printf("[|atm]");
		return;
	}
	if (p[PROTO_POS] == Q2931) {
		/*
		 * protocol:Q.2931 for User to Network Interface 
		 * (UNI 3.1) signalling
		 */
		printf("Q.2931");
		if (caplen < MSG_TYPE_POS) {
			printf(" [|atm]");
			return;
		}
		printf(":%s ",
		    tok2str(msgtype2str, "msgtype#%d", p[MSG_TYPE_POS]));

		if (caplen < CALL_REF_POS+3) {
			printf("[|atm]");
			return;
		}
		call_ref = EXTRACT_24BITS(&p[CALL_REF_POS]);
		printf("CALL_REF:0x%06x", call_ref);
	} else {
		/* SCCOP with some unknown protocol atop it */
		printf("SSCOP, proto %d ", p[PROTO_POS]);
	}
}

开发者ID:gosudream，项目名称:netbsd-src，代码行数:33，代码来源:print-atm.c

示例9: handle_llc_packet

static void handle_llc_packet(const struct llc* llc, int dir) {

    struct ip* ip = (struct ip*)((void*)llc + sizeof(struct llc));

    /* Taken from tcpdump/print-llc.c */
    if(llc->ssap == LLCSAP_SNAP && llc->dsap == LLCSAP_SNAP
       && llc->llcui == LLC_UI) {
        u_int32_t orgcode;
        register u_short et;
        orgcode = EXTRACT_24BITS(&llc->llc_orgcode[0]);
        et = EXTRACT_16BITS(&llc->llc_ethertype[0]);
        switch(orgcode) {
          case OUI_ENCAP_ETHER:
          case OUI_CISCO_90:
            handle_ip_packet(ip, dir);
            break;
          case OUI_APPLETALK:
            if(et == ETHERTYPE_ATALK) {
              handle_ip_packet(ip, dir);
            }
            break;
          default:;
            /* Not a lot we can do */
        }
    }
}

开发者ID:dove0rz，项目名称:iftop-android，代码行数:26，代码来源:iftop.c

示例10: juniper_atm2_print

u_int
juniper_atm2_print(netdissect_options *ndo,
                   const struct pcap_pkthdr *h, register const u_char *p)
{
        uint16_t extracted_ethertype;

        struct juniper_l2info_t l2info;

        l2info.pictype = DLT_JUNIPER_ATM2;
        if (juniper_parse_header(ndo, p, h, &l2info) == 0)
            return l2info.header_len;

        p+=l2info.header_len;

        if (l2info.cookie[7] & ATM2_PKT_TYPE_MASK) { /* OAM cell ? */
            oam_print(ndo, p, l2info.length, ATM_OAM_NOHEC);
            return l2info.header_len;
        }

        if (EXTRACT_24BITS(p) == 0xfefe03 || /* NLPID encaps ? */
            EXTRACT_24BITS(p) == 0xaaaa03) { /* SNAP encaps ? */

            if (llc_print(ndo, p, l2info.length, l2info.caplen, NULL, NULL,
                          &extracted_ethertype) != 0)
                return l2info.header_len;
        }

        if (l2info.direction != JUNIPER_BPF_PKT_IN && /* ether-over-1483 encaps ? */
            (EXTRACT_32BITS(l2info.cookie) & ATM2_GAP_COUNT_MASK)) {
            ether_print(ndo, p, l2info.length, l2info.caplen, NULL, NULL);
            return l2info.header_len;
        }

        if (p[0] == 0x03) { /* Cisco style NLPID encaps ? */
            isoclns_print(ndo, p + 1, l2info.length - 1, l2info.caplen - 1);
            /* FIXME check if frame was recognized */
            return l2info.header_len;
        }

        if(juniper_ppp_heuristic_guess(ndo, p, l2info.length) != 0) /* PPPoA vcmux encaps ? */
            return l2info.header_len;

        if (ip_heuristic_guess(ndo, p, l2info.length) != 0) /* last try - vcmux encaps ? */
            return l2info.header_len;

	return l2info.header_len;
}

开发者ID:bdrewery，项目名称:tcpdump，代码行数:47，代码来源:print-juniper.c

示例11: juniper_atm2_print

u_int
juniper_atm2_print(const struct pcap_pkthdr *h, register const u_char *p)
{
        u_int16_t extracted_ethertype;

        struct juniper_l2info_t l2info;

        l2info.pictype = DLT_JUNIPER_ATM2;
        if(juniper_parse_header(p, h, &l2info) == 0)
            return l2info.header_len;

        p+=l2info.header_len;

        if (l2info.cookie[7] & ATM2_PKT_TYPE_MASK) { 
            oam_print(p,l2info.length,ATM_OAM_NOHEC);
            return l2info.header_len;
        }

        if (EXTRACT_24BITS(p) == 0xfefe03 || 
            EXTRACT_24BITS(p) == 0xaaaa03) { 

            if (llc_print(p, l2info.length, l2info.caplen, NULL, NULL,
                          &extracted_ethertype) != 0)
                return l2info.header_len;
        }

        if (l2info.direction != JUNIPER_BPF_PKT_IN && 
            (EXTRACT_32BITS(l2info.cookie) & ATM2_GAP_COUNT_MASK)) {
            ether_print(p, l2info.length, l2info.caplen);
            return l2info.header_len;
        }

        if (p[0] == 0x03) { 
            isoclns_print(p + 1, l2info.length - 1, l2info.caplen - 1);
            
            return l2info.header_len;
        }

        if(juniper_ppp_heuristic_guess(p, l2info.length) != 0) 
            return l2info.header_len;

        if(ip_heuristic_guess(p, l2info.length) != 0) 
            return l2info.header_len;

	return l2info.header_len;
}

开发者ID:qtekfun，项目名称:htcDesire820Kernel，代码行数:46，代码来源:print-juniper.c

示例12: ospf_print_lshdr

static int
ospf_print_lshdr(register const struct lsa_hdr *lshp)
{
        u_int ls_length;

        TCHECK(lshp->ls_length);
        ls_length = EXTRACT_16BITS(&lshp->ls_length);
        if (ls_length < sizeof(struct lsa_hdr)) {
                printf("\n\t    Bogus length %u < %lu", ls_length,
                    (unsigned long)sizeof(struct lsa_hdr));
                return(-1);
        }

        TCHECK(lshp->ls_seq);	/* XXX - ls_length check checked this */
	printf("\n\t  Advertising Router: %s, seq 0x%08x, age %us, length: %u",
	       ipaddr_string(&lshp->ls_router),
	       EXTRACT_32BITS(&lshp->ls_seq),
	       EXTRACT_16BITS(&lshp->ls_age),
               ls_length-(u_int)sizeof(struct lsa_hdr));

	TCHECK(lshp->ls_type);	/* XXX - ls_length check checked this */
        switch (lshp->ls_type) {
	/* the LSA header for opaque LSAs was slightly changed */
        case LS_TYPE_OPAQUE_LL:
        case LS_TYPE_OPAQUE_AL:
        case LS_TYPE_OPAQUE_DW:
            printf("\n\t    %s LSA (%d), Opaque-Type: %s LSA (%u), Opaque-ID: %u",
                   tok2str(lsa_values,"unknown",lshp->ls_type),
                   lshp->ls_type,

		   tok2str(lsa_opaque_values,
			   "unknown",
			   *(&lshp->un_lsa_id.opaque_field.opaque_type)),
		   *(&lshp->un_lsa_id.opaque_field.opaque_type),
		   EXTRACT_24BITS(&lshp->un_lsa_id.opaque_field.opaque_id)
                   
                   );
            break;

	/* all other LSA types use regular style LSA headers */
	default:
            printf("\n\t    %s LSA (%d), LSA-ID: %s",
                   tok2str(lsa_values,"unknown",lshp->ls_type),
                   lshp->ls_type,
                   ipaddr_string(&lshp->un_lsa_id.lsa_id));
            break;
        }

	TCHECK(lshp->ls_options);	/* XXX - ls_length check checked this */
        printf("\n\t    Options: [%s]", bittok2str(ospf_option_values,"none",lshp->ls_options));

        return (ls_length);
trunc:
	return (-1);
}

开发者ID:hsluoyz，项目名称:WinDump，代码行数:55，代码来源:print-ospf.c

示例13: vxlan_gpe_print

void
vxlan_gpe_print(netdissect_options *ndo, const u_char *bp, u_int len)
{
    uint8_t flags;
    uint8_t next_protocol;
    uint32_t vni;

    if (len < VXLAN_GPE_HDR_LEN)
        goto trunc;

    ND_TCHECK2(*bp, VXLAN_GPE_HDR_LEN);

    flags = *bp;
    bp += 3;

    next_protocol = *bp;
    bp += 1;

    vni = EXTRACT_24BITS(bp);
    bp += 4;

    ND_PRINT((ndo, "VXLAN-GPE, "));
    ND_PRINT((ndo, "flags [%s], ",
              bittok2str_nosep(vxlan_gpe_flags, "none", flags)));
    ND_PRINT((ndo, "vni %u", vni));
    ND_PRINT((ndo, ndo->ndo_vflag ? "\n    " : ": "));

    switch (next_protocol) {
    case 0x1:
        ip_print(ndo, bp, len - 8);
        break;
    case 0x2:
        ip6_print(ndo, bp, len - 8);
        break;
    case 0x3:
        ether_print(ndo, bp, len - 8, len - 8, NULL, NULL);
        break;
    case 0x4:
        nsh_print(ndo, bp, len - 8);
        break;
    case 0x5:
        mpls_print(ndo, bp, len - 8);
        break;
    default:
        ND_PRINT((ndo, "ERROR: unknown-next-protocol"));
        return;
    }

	return;

trunc:
	ND_PRINT((ndo, "%s", tstr));
}

开发者ID:GerardGarcia，项目名称:tcpdump，代码行数:53，代码来源:print-vxlan-gpe.c

示例14: dccp_seqno

static u_int64_t dccp_seqno(const struct dccp_hdr *dh)
{
	u_int32_t seq_high = DCCPH_SEQ(dh);
	u_int64_t seqno = EXTRACT_24BITS(&seq_high) & 0xFFFFFF;

	if (DCCPH_X(dh) != 0) {
		const struct dccp_hdr_ext *dhx = (void *)(dh + 1);
		u_int32_t seq_low = dhx->dccph_seq_low;
		seqno &= 0x00FFFF;  /* clear reserved field */
		seqno = (seqno << 32) + EXTRACT_32BITS(&seq_low);
	}

	return seqno;
}

开发者ID:IAmAnubhavSaini，项目名称:tcpdump，代码行数:14，代码来源:print-dccp.c

示例15: dccp_seqno

static u_int64_t dccp_seqno(const u_char *bp)
{
	const struct dccp_hdr *dh = (const struct dccp_hdr *)bp;
	u_int64_t seqno;

	if (DCCPH_X(dh) != 0) {
		const struct dccp_hdr_ext *dhx = (const struct dccp_hdr_ext *)bp;
		seqno = EXTRACT_48BITS(dhx->dccph_seq);
	} else {
		seqno = EXTRACT_24BITS(dh->dccph_seq);
	}

	return seqno;
}

开发者ID:rwdxll，项目名称:tcpdump，代码行数:14，代码来源:print-dccp.c

示例16: juniper_atm1_print

u_int
juniper_atm1_print(const struct pcap_pkthdr *h, register const u_char *p)
{
        u_int16_t extracted_ethertype;

        struct juniper_l2info_t l2info;

        l2info.pictype = DLT_JUNIPER_ATM1;
        if(juniper_parse_header(p, h, &l2info) == 0)
            return l2info.header_len;

        p+=l2info.header_len;

        if (l2info.cookie[0] == 0x80) { 
            oam_print(p,l2info.length,ATM_OAM_NOHEC);
            return l2info.header_len;
        }

        if (EXTRACT_24BITS(p) == 0xfefe03 || 
            EXTRACT_24BITS(p) == 0xaaaa03) { 

            if (llc_print(p, l2info.length, l2info.caplen, NULL, NULL,
                          &extracted_ethertype) != 0)
                return l2info.header_len;
        }

        if (p[0] == 0x03) { 
            isoclns_print(p + 1, l2info.length - 1, l2info.caplen - 1);
            
            return l2info.header_len;
        }

        if(ip_heuristic_guess(p, l2info.length) != 0) 
            return l2info.header_len;

	return l2info.header_len;
}

开发者ID:qtekfun，项目名称:htcDesire820Kernel，代码行数:37，代码来源:print-juniper.c

示例17: juniper_atm1_print

u_int
juniper_atm1_print(const struct pcap_pkthdr *h, register const u_char *p)
{
        u_int16_t extracted_ethertype;

        struct juniper_l2info_t l2info;

        l2info.pictype = DLT_JUNIPER_ATM1;
        if(juniper_parse_header(p, h, &l2info) == 0)
            return l2info.header_len;

        p+=l2info.header_len;

        if (l2info.cookie[0] == 0x80) { /* OAM cell ? */
            oam_print(p,l2info.length,ATM_OAM_NOHEC);
            return l2info.header_len;
        }

        if (EXTRACT_24BITS(p) == 0xfefe03 || /* NLPID encaps ? */
            EXTRACT_24BITS(p) == 0xaaaa03) { /* SNAP encaps ? */

            if (llc_print(p, l2info.length, l2info.caplen, NULL, NULL,
                          &extracted_ethertype) != 0)
                return l2info.header_len;
        }

        if (p[0] == 0x03) { /* Cisco style NLPID encaps ? */
            isoclns_print(p + 1, l2info.length - 1, l2info.caplen - 1);
            /* FIXME check if frame was recognized */
            return l2info.header_len;
        }

        if(ip_heuristic_guess(p, l2info.length) != 0) /* last try - vcmux encaps ? */
            return l2info.header_len;

	return l2info.header_len;
}

开发者ID:flwh，项目名称:Alcatel_OT_985_kernel，代码行数:37，代码来源:print-juniper.c

示例18: dccp_print_ack_no

static void dccp_print_ack_no(netdissect_options *ndo, const u_char *bp)
{
	const struct dccp_hdr *dh = (const struct dccp_hdr *)bp;
	const u_char *ackp = bp + dccp_basic_hdr_len(dh);
	u_int64_t ackno;

	if (DCCPH_X(dh) != 0) {
		ND_TCHECK2(*ackp, 8);
		ackno = EXTRACT_48BITS(ackp + 2);
	} else {
		ND_TCHECK2(*ackp, 4);
		ackno = EXTRACT_24BITS(ackp + 1);
	}

	ND_PRINT((ndo, "(ack=%" PRIu64 ") ", ackno));
trunc:
	return;
}

开发者ID:rwdxll，项目名称:tcpdump，代码行数:18，代码来源:print-dccp.c

示例19: dccp_print_ack_no

static void dccp_print_ack_no(const u_char *bp)
{
	const struct dccp_hdr *dh = (const struct dccp_hdr *)bp;
	const u_char *ackp = bp + dccp_basic_hdr_len(dh);
	u_int64_t ackno;

	if (DCCPH_X(dh) != 0) {
		TCHECK2(*ackp, 8);
		ackno = EXTRACT_48BITS(ackp + 2);
	} else {
		TCHECK2(*ackp, 4);
		ackno = EXTRACT_24BITS(ackp + 1);
	}

	(void)printf("(ack=%" PRIu64 ") ", ackno);
trunc:
	return;
}

开发者ID:supermartian，项目名称:tcpdump，代码行数:18，代码来源:print-dccp.c

示例20: geneve_print

void
geneve_print(netdissect_options *ndo, const u_char *bp, u_int len)
{
    uint8_t ver_opt;
    u_int version;
    uint8_t flags;
    uint16_t prot;
    uint32_t vni;
    uint8_t reserved;
    u_int opts_len;

    ND_PRINT((ndo, "Geneve"));

    ND_TCHECK2(*bp, 8);

    ver_opt = *bp;
    bp += 1;
    len -= 1;

    version = ver_opt >> VER_SHIFT;
    if (version != 0) {
        ND_PRINT((ndo, " ERROR: unknown-version %u", version));
        return;
    }

    flags = *bp;
    bp += 1;
    len -= 1;

    prot = EXTRACT_16BITS(bp);
    bp += 2;
    len -= 2;

    vni = EXTRACT_24BITS(bp);
    bp += 3;
    len -= 3;

    reserved = *bp;
    bp += 1;
    len -= 1;

    ND_PRINT((ndo, ", Flags [%s]",
              bittok2str_nosep(geneve_flag_values, "none", flags)));
    ND_PRINT((ndo, ", vni 0x%x", vni));

    if (reserved)
        ND_PRINT((ndo, ", rsvd 0x%x", reserved));

    if (ndo->ndo_eflag)
        ND_PRINT((ndo, ", proto %s (0x%04x)",
                  tok2str(ethertype_values, "unknown", prot), prot));

    opts_len = (ver_opt & HDR_OPTS_LEN_MASK) * 4;

    if (len < opts_len) {
        ND_PRINT((ndo, " truncated-geneve - %u bytes missing",
                  opts_len - len));
        return;
    }

    ND_TCHECK2(*bp, opts_len);

    if (opts_len > 0) {
        ND_PRINT((ndo, ", options ["));

        if (ndo->ndo_vflag)
            geneve_opts_print(ndo, bp, opts_len);
        else
            ND_PRINT((ndo, "%u bytes", opts_len));

        ND_PRINT((ndo, "]"));
    }

    bp += opts_len;
    len -= opts_len;

    if (ndo->ndo_vflag < 1)
        ND_PRINT((ndo, ": "));
    else
        ND_PRINT((ndo, "\n\t"));

    if (ethertype_print(ndo, prot, bp, len, len) == 0) {
        if (prot == ETHERTYPE_TEB)
            ether_print(ndo, bp, len, len, NULL, NULL);
        else
            ND_PRINT((ndo, "geneve-proto-0x%x", prot));
    }

    return;

trunc:
    ND_PRINT((ndo, " [|geneve]"));
}

开发者ID:LXiong，项目名称:tcpdump，代码行数:93，代码来源:print-geneve.c

注：本文中的EXTRACT_24BITS函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

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C++ EXTRACT_24BITS函数代码示例

示例1: otv_print

示例2: igrp_entry_print

示例3: juniper_services_print

示例4: juniper_services_print

示例5: dccp_print_ack_no

示例6: sig_print

示例7: vxlan_print

示例8: sig_print

示例9: handle_llc_packet

示例10: juniper_atm2_print

示例11: juniper_atm2_print

示例12: ospf_print_lshdr

示例13: vxlan_gpe_print

示例14: dccp_seqno

示例15: dccp_seqno

示例16: juniper_atm1_print

示例17: juniper_atm1_print

示例18: dccp_print_ack_no

示例19: dccp_print_ack_no

示例20: geneve_print

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