Convert the follow up info tlv to and from network byte order.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>master
parent
00b232477d
commit
226bd355af
4
msg.c
4
msg.c
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@ -76,12 +76,12 @@ static void announce_post_recv(struct announce_msg *m)
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m->stepsRemoved = ntohs(m->stepsRemoved);
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}
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static int64_t host2net64(int64_t val)
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int64_t host2net64(int64_t val)
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{
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return __cpu_to_be64(val);
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}
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static int64_t net2host64(int64_t val)
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int64_t net2host64(int64_t val)
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{
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return __be64_to_cpu(val);
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}
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10
msg.h
10
msg.h
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@ -317,4 +317,14 @@ static inline Boolean one_step(struct ptp_message *m)
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return !field_is_set(m, 0, TWO_STEP);
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}
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/**
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* Convert a 64 bit word into network byte order.
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*/
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int64_t host2net64(int64_t val);
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/**
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* Convert a 64 bit word into host byte order.
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*/
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int64_t net2host64(int64_t val);
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#endif
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61
tlv.c
61
tlv.c
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@ -17,9 +17,66 @@
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <arpa/inet.h>
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#include <string.h>
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#include "tlv.h"
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uint8_t ieee8021_id[3] = { IEEE_802_1_COMMITTEE };
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static void scaled_ns_n2h(ScaledNs *sns)
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{
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sns->nanoseconds_msb = ntohs(sns->nanoseconds_msb);
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sns->nanoseconds_lsb = net2host64(sns->nanoseconds_msb);
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sns->fractional_nanoseconds = ntohs(sns->fractional_nanoseconds);
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}
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static void scaled_ns_h2n(ScaledNs *sns)
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{
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sns->nanoseconds_msb = htons(sns->nanoseconds_msb);
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sns->nanoseconds_lsb = host2net64(sns->nanoseconds_msb);
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sns->fractional_nanoseconds = htons(sns->fractional_nanoseconds);
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}
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static void org_post_recv(struct organization_tlv *org)
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{
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struct follow_up_info_tlv *f;
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if (0 == memcmp(org->id, ieee8021_id, sizeof(ieee8021_id))) {
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if (org->subtype[0] || org->subtype[1]) {
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return;
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}
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switch (org->subtype[2]) {
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case 1:
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f = (struct follow_up_info_tlv *) org;
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f->cumulativeScaledRateOffset = ntohl(f->cumulativeScaledRateOffset);
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f->gmTimeBaseIndicator = ntohs(f->gmTimeBaseIndicator);
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scaled_ns_n2h(&f->lastGmPhaseChange);
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f->scaledLastGmPhaseChange = ntohl(f->scaledLastGmPhaseChange);
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break;
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}
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}
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}
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static void org_pre_send(struct organization_tlv *org)
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{
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struct follow_up_info_tlv *f;
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if (0 == memcmp(org->id, ieee8021_id, sizeof(ieee8021_id))) {
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if (org->subtype[0] || org->subtype[1]) {
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return;
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}
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switch (org->subtype[2]) {
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case 1:
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f = (struct follow_up_info_tlv *) org;
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f->cumulativeScaledRateOffset = htonl(f->cumulativeScaledRateOffset);
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f->gmTimeBaseIndicator = htons(f->gmTimeBaseIndicator);
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scaled_ns_h2n(&f->lastGmPhaseChange);
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f->scaledLastGmPhaseChange = htonl(f->scaledLastGmPhaseChange);
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break;
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}
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}
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}
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void tlv_post_recv(struct TLV *tlv)
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{
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struct management_tlv *mgt;
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@ -37,6 +94,8 @@ void tlv_post_recv(struct TLV *tlv)
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mes->id = ntohs(mes->id);
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break;
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case TLV_ORGANIZATION_EXTENSION:
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org_post_recv((struct organization_tlv *) tlv);
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break;
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case TLV_REQUEST_UNICAST_TRANSMISSION:
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case TLV_GRANT_UNICAST_TRANSMISSION:
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case TLV_CANCEL_UNICAST_TRANSMISSION:
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@ -74,6 +133,8 @@ void tlv_pre_send(struct TLV *tlv)
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mes->id = htons(mes->id);
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break;
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case TLV_ORGANIZATION_EXTENSION:
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org_pre_send((struct organization_tlv *) tlv);
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break;
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case TLV_REQUEST_UNICAST_TRANSMISSION:
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case TLV_GRANT_UNICAST_TRANSMISSION:
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case TLV_CANCEL_UNICAST_TRANSMISSION:
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28
tlv.h
28
tlv.h
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@ -123,6 +123,17 @@ struct management_error_status {
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Octet data[0];
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} PACKED;
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/* Organizationally Unique Identifiers */
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#define IEEE_802_1_COMMITTEE 0x00, 0x80, 0xC2
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extern uint8_t ieee8021_id[3];
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struct organization_tlv {
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Enumeration16 type;
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UInteger16 length;
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Octet id[3];
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Octet subtype[3];
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} PACKED;
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#define PATH_TRACE_MAX \
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((sizeof(struct message_data) - sizeof(struct announce_msg) - sizeof(struct TLV)) / \
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sizeof(struct ClockIdentity))
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@ -138,6 +149,23 @@ static inline unsigned int path_length(struct path_trace_tlv *p)
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return p->length / sizeof(struct ClockIdentity);
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}
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typedef struct Integer96 {
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uint16_t nanoseconds_msb;
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uint64_t nanoseconds_lsb;
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uint16_t fractional_nanoseconds;
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} PACKED ScaledNs;
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struct follow_up_info_tlv {
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Enumeration16 type;
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UInteger16 length;
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Octet id[3];
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Octet subtype[3];
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UInteger32 cumulativeScaledRateOffset;
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UInteger16 gmTimeBaseIndicator;
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ScaledNs lastGmPhaseChange;
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Integer32 scaledLastGmPhaseChange;
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} PACKED;
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/**
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* Converts recognized value sub-fields into host byte order.
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* @param tlv Pointer to a Type Length Value field.
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