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Merge pull request #109 from mrlnc/pcap_write_sfn

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Write SFN to MAC-LTE PCAP file
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Ismael Gomez 2017-10-28 14:18:01 -07:00 committed by GitHub
commit 770490a115
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 9 additions and 6 deletions
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15
lib/include/srslte/common/pcap.h
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@ -80,8 +80,9 @@ typedef struct pcaprec_hdr_s {
#define MAC_LTE_UEID_TAG 0x03
/* 2 bytes, network order */
#define MAC_LTE_SUBFRAME_TAG 0x04
#define MAC_LTE_FRAME_SUBFRAME_TAG 0x04
/* 2 bytes, network order */
/* SFN is stored in 12 MSB and SF in 4 LSB */
#define MAC_LTE_PREDFINED_DATA_TAG 0x05
/* 1 byte */
@ -150,7 +151,7 @@ inline int MAC_LTE_PCAP_WritePDU(FILE *fd, MAC_Context_Info_t *context,
pcaprec_hdr_t packet_header;
char context_header[256];
int offset = 0;
unsigned short tmp16;
uint16_t tmp16;
/* Can't write if file wasn't successfully opened */
if (fd == NULL) {
@ -176,9 +177,11 @@ inline int MAC_LTE_PCAP_WritePDU(FILE *fd, MAC_Context_Info_t *context,
memcpy(context_header+offset, &tmp16, 2);
offset += 2;
/* Subframe number */
context_header[offset++] = MAC_LTE_SUBFRAME_TAG;
tmp16 = htons(context->subFrameNumber);
/* Subframe Number and System Frame Number */
/* SFN is stored in 12 MSB and SF in 4 LSB */
context_header[offset++] = MAC_LTE_FRAME_SUBFRAME_TAG;
tmp16 = (context->sysFrameNumber << 4) | context->subFrameNumber;
tmp16 = htons(tmp16);
memcpy(context_header+offset, &tmp16, 2);
offset += 2;
@ -215,4 +218,4 @@ inline void MAC_LTE_PCAP_Close(FILE *fd)
fclose(fd);
}
#endif /* UEPCAP_H */
#endif /* UEPCAP_H */