mirror of https://github.com/PentHertz/srsLTE.git
Making sure that GTPU optional fields get written
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@ -73,9 +73,30 @@ bool gtpu_write_header(gtpu_header_t *header, srslte::byte_buffer_t *pdu, srslte
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uint16_to_uint8(header->length, ptr);
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ptr += 2;
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uint32_to_uint8(header->teid, ptr);
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//write optional fields
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//write optional fields, if E, S or PN are set.
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if (header->flags & (GTPU_FLAGS_EXTENDED_HDR | GTPU_FLAGS_SEQUENCE | GTPU_FLAGS_PACKET_NUM)) {
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//S
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if (header->flags & GTPU_FLAGS_SEQUENCE ) {
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uint16_to_uint8(header->seq_number, ptr);
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} else {
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uint16_to_uint8(0, ptr);
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}
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ptr+=2;
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//PN
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if (header->flags & GTPU_FLAGS_PACKET_NUM ) {
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*ptr = header->n_pdu;
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} else {
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header=>n_pdu = 0;
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}
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ptr++;
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//E
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if (header->flags & GTPU_FLAGS_EXTENDED_HDR ) {
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*ptr = header->next_ext_hdr_type;
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} else {
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*ptr = 0;
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}
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ptr++;
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}
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return true;
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}
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