1 /******************************************************************************
3 * Copyright (c) 2019 Intel.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 *******************************************************************************/
20 * @brief This file provides the implementation of User Plane Messages APIs.
23 * @ingroup group_lte_source_xran
24 * @author Intel Corporation
29 #include <rte_memcpy.h>
32 #include "xran_fh_o_du.h"
33 #include "xran_transport.h"
34 #include "xran_up_api.h"
35 #include "xran_printf.h"
36 #include "xran_mlog_lnx.h"
38 extern uint32_t xran_lib_ota_tti;
41 * @brief Builds eCPRI header in xRAN packet
43 * @param mbuf Initialized rte_mbuf packet
44 * @param iq_data_num_bytes Number of bytes in IQ data buffer
45 * @param iq_data_offset Number of elements already sent
46 * @return int int 0 on success, non zero on failure
48 static int build_ecpri_hdr(struct rte_mbuf *mbuf,
49 const uint32_t iq_data_num_bytes,
50 const uint32_t iq_data_offset,
53 struct xran_ecpri_hdr *ecpri_hdr = (struct xran_ecpri_hdr *)
54 rte_pktmbuf_append(mbuf, sizeof(struct xran_ecpri_hdr));
56 uint16_t iq_samples_bytes_in_mbuf = rte_pktmbuf_tailroom(mbuf) -
57 sizeof(struct radio_app_common_hdr) - sizeof(struct data_section_hdr);
59 iq_samples_bytes_in_mbuf -= (iq_samples_bytes_in_mbuf % alignment);
61 if (NULL == ecpri_hdr)
64 ecpri_hdr->cmnhdr.ecpri_ver = XRAN_ECPRI_VER;
65 ecpri_hdr->cmnhdr.ecpri_resv = 0;
66 ecpri_hdr->cmnhdr.ecpri_concat = 0;
67 ecpri_hdr->cmnhdr.ecpri_mesg_type = ECPRI_IQ_DATA;
69 if (iq_data_offset + iq_samples_bytes_in_mbuf > iq_data_num_bytes) {
70 ecpri_hdr->cmnhdr.ecpri_payl_size =
71 rte_cpu_to_be_16(sizeof(struct radio_app_common_hdr) +
72 sizeof(struct data_section_hdr) +
73 (iq_data_num_bytes - iq_data_offset) +
74 xran_get_ecpri_hdr_size());
75 ecpri_hdr->ecpri_seq_id.e_bit = 1; /* last segment */
77 ecpri_hdr->cmnhdr.ecpri_payl_size =
78 rte_cpu_to_be_16(sizeof(struct radio_app_common_hdr) +
79 sizeof(struct data_section_hdr) +
80 iq_samples_bytes_in_mbuf +
81 xran_get_ecpri_hdr_size());
82 ecpri_hdr->ecpri_seq_id.e_bit = 0;
85 // ecpri_hdr->ecpri_xtc_id = 0; /* currently not used */
86 ecpri_hdr->ecpri_seq_id.seq_id = 0;
87 ecpri_hdr->ecpri_seq_id.sub_seq_id = iq_data_offset /
88 iq_samples_bytes_in_mbuf;
94 * @brief Builds eCPRI header in xRAN packet
96 * @param mbuf Initialized rte_mbuf packet
97 * @param ecpri_mesg_type eCPRI message type
98 * @param payl_size the size in bytes of the payload part of eCPRI message
99 * @param CC_ID Component Carrier ID for ecpriRtcid/ecpriPcid
100 * @param Ant_ID Antenna ID for ecpriRtcid/ecpriPcid
101 * @param seq_id Message identifier for eCPRI message
102 * @return int int 0 on success, non zero on failure
104 static int xran_build_ecpri_hdr_ex(struct rte_mbuf *mbuf,
105 uint8_t ecpri_mesg_type,
111 char *pChar = rte_pktmbuf_mtod(mbuf, char*);
112 struct xran_ecpri_hdr *ecpri_hdr = (struct xran_ecpri_hdr *)(pChar + sizeof(struct ether_hdr));
114 if (NULL == ecpri_hdr)
117 ecpri_hdr->cmnhdr.ecpri_ver = XRAN_ECPRI_VER;
118 ecpri_hdr->cmnhdr.ecpri_resv = 0; // should be zero
119 ecpri_hdr->cmnhdr.ecpri_concat = 0;
120 ecpri_hdr->cmnhdr.ecpri_mesg_type = ecpri_mesg_type;
121 ecpri_hdr->cmnhdr.ecpri_payl_size = rte_cpu_to_be_16(payl_size
122 + sizeof(struct data_section_hdr)
123 + sizeof(struct radio_app_common_hdr)
124 + xran_get_ecpri_hdr_size());
126 /* one to one lls-CU to RU only and band sector is the same */
127 ecpri_hdr->ecpri_xtc_id = xran_compose_cid(0, 0, CC_ID, Ant_ID);
129 ecpri_hdr->ecpri_seq_id.seq_id = seq_id;
131 /* no transport layer fragmentation supported */
132 ecpri_hdr->ecpri_seq_id.sub_seq_id = 0;
133 ecpri_hdr->ecpri_seq_id.e_bit = 1;
140 * @brief Builds application layer of xRAN packet
142 * @param mbuf Initialized rte_mbuf packet
143 * @param app_hdr_input Radio App common header structure to be set in mbuf
145 * @return int 0 on success, non zero on failure
147 static int build_application_layer(
148 struct rte_mbuf *mbuf,
149 const struct radio_app_common_hdr *app_hdr_input)
151 char *pChar = rte_pktmbuf_mtod(mbuf, char*);
152 struct radio_app_common_hdr *app_hdr = (struct radio_app_common_hdr *)(pChar + sizeof(struct ether_hdr)
153 + sizeof (struct xran_ecpri_hdr));
158 rte_memcpy(app_hdr, app_hdr_input, sizeof(struct radio_app_common_hdr));
164 * @brief Builds section header in xRAN packet
166 * @param mbuf Initialized rte_mbuf packet
167 * @param sec_hdr Section header structure to be set in mbuf packet
168 * @return int 0 on success, non zero on failure
170 static int build_section_hdr(
171 struct rte_mbuf *mbuf,
172 const struct data_section_hdr *sec_hdr)
174 char *pChar = rte_pktmbuf_mtod(mbuf, char*);
175 struct data_section_hdr *section_hdr = (struct data_section_hdr *)
176 (pChar + sizeof(struct ether_hdr) + sizeof (struct xran_ecpri_hdr) + sizeof(struct radio_app_common_hdr));
178 if (NULL == section_hdr)
181 rte_memcpy(section_hdr, sec_hdr, sizeof(struct data_section_hdr));
186 * @brief Function for appending IQ samples data to the mbuf.
188 * @param mbuf Initialized rte_mbuf packet.
189 * @param iq_data_start Address of the first element in IQ data array.
190 * @param iq_data_num_bytes Size of the IQ data array.
191 * @param iq_data_offset IQ data btyes already sent.
192 * @return uint16_t Bytes that have been appended to the packet.
194 static uint16_t append_iq_samples_ex(
195 struct rte_mbuf *mbuf,
196 const void *iq_data_start,
197 const uint32_t iq_data_num_bytes,
198 enum xran_input_byte_order iq_buf_byte_order,
201 char *pChar = rte_pktmbuf_mtod(mbuf, char*);
202 void *iq_sam_buf = (pChar + sizeof(struct ether_hdr) + sizeof (struct xran_ecpri_hdr)
203 + sizeof(struct radio_app_common_hdr)
204 + sizeof(struct data_section_hdr));
206 if (iq_sam_buf == NULL){
207 print_err("iq_sam_buf == NULL\n");
210 if(iq_buf_byte_order == XRAN_CPU_LE_BYTE_ORDER){
212 uint16_t *psrc = (uint16_t *)iq_data_start;
213 uint16_t *pdst = (uint16_t *)iq_sam_buf;
214 /* CPU byte order (le) of IQ to network byte order (be) */
215 for (idx = 0; idx < iq_data_num_bytes/sizeof(int16_t); idx++){
216 pdst[idx] = (psrc[idx]>>8) | (psrc[idx]<<8); //rte_cpu_to_be_16(psrc[idx]);
218 }else if(iq_buf_byte_order == XRAN_NE_BE_BYTE_ORDER){
220 rte_memcpy(iq_sam_buf, (uint8_t *)iq_data_start, iq_data_num_bytes);
223 return iq_data_num_bytes;
227 * @brief Function for appending IQ samples data to the mbuf.
229 * @param mbuf Initialized rte_mbuf packet.
230 * @param iq_data_start Address of the first element in IQ data array.
231 * @param iq_data_num_bytes Size of the IQ data array.
232 * @param iq_data_offset IQ data btyes already sent.
233 * @return uint16_t Bytes that have been appended to the packet.
235 static uint16_t append_iq_samples(
236 struct rte_mbuf *mbuf,
237 const void *iq_data_start,
238 const uint32_t iq_data_num_bytes,
239 const uint32_t iq_data_offset,
240 const uint8_t alignment)
242 uint16_t iq_bytes_to_send = 0;
243 uint16_t free_space_in_pkt = rte_pktmbuf_tailroom(mbuf);
245 if (free_space_in_pkt > iq_data_num_bytes - iq_data_offset)
246 iq_bytes_to_send = iq_data_num_bytes - iq_data_offset;
248 iq_bytes_to_send = free_space_in_pkt;
250 /* don't cut off an iq in half */
251 iq_bytes_to_send -= iq_bytes_to_send % alignment;
253 void *iq_sam_buf = (void *)rte_pktmbuf_append(mbuf, iq_bytes_to_send);
255 rte_memcpy(iq_sam_buf, (uint8_t *)iq_data_start + iq_data_offset,
258 return iq_bytes_to_send;
262 * @brief Builds compression header in xRAN packet
264 * @param mbuf Initialized rte_mbuf packet
265 * @param compression_hdr Section compression header structure
266 * to be set in mbuf packet
267 * @return int 0 on success, non zero on failure
269 static int build_compression_hdr(
270 struct rte_mbuf *mbuf,
271 const struct data_section_compression_hdr *compr_hdr)
273 struct data_section_compression_hdr *compression_hdr =
274 (struct data_section_compression_hdr *)
275 rte_pktmbuf_append(mbuf, sizeof(*compression_hdr));
277 if (NULL == compression_hdr)
280 rte_memcpy(compression_hdr, compr_hdr, sizeof(*compression_hdr));
286 * @brief Appends compression parameter in xRAN packet
288 * @param mbuf Initialized rte_mbuf packet
289 * @param ud_comp_paramr Compression param to be set in mbuf packet
290 * @return int 0 on success, non zero on failure
292 static int append_comp_param(struct rte_mbuf *mbuf, union compression_params *ud_comp_param)
294 union compression_params *compr_param =
295 (union compression_params *)rte_pktmbuf_append(mbuf, sizeof(union compression_params));
297 if (NULL == compr_param)
300 rte_memcpy(compr_param, ud_comp_param, sizeof(union compression_params));
306 * @brief Function for starting preparion of IQ samples portions
307 * to be sent in xRAN packet
309 * @param mbuf Initialized rte_mbuf packet.
310 * @param iq_data_start Address of the first element in IQ data array.
311 * @param iq_data_num_bytes Size of the IQ data array.
312 * @param iq_data_offset IQ data bytes already sent.
313 * @param alignment Size of IQ data alignment.
314 * @param pkt_gen_params Struct with parameters used for building packet
315 * @return int Number of bytes that have been appended
316 to the packet within a single data section appended.
318 int xran_prepare_iq_symbol_portion(
319 struct rte_mbuf *mbuf,
320 const void *iq_data_start,
321 const uint32_t iq_data_num_bytes,
322 uint32_t *iq_data_offset,
324 struct xran_up_pkt_gen_params *params,
328 uint16_t iq_sam_bytes_sent = 0;
330 if (build_ecpri_hdr(mbuf, iq_data_num_bytes, *iq_data_offset, alignment))
333 if (build_application_layer(mbuf, &(params->app_params)) != 0)
336 if (build_section_hdr(mbuf, &(params->sec_hdr)) != 0)
339 if(params->compr_hdr_param.ud_comp_hdr.ud_comp_meth != XRAN_COMPMETHOD_NONE) {
340 if (build_compression_hdr(mbuf, &(params->compr_hdr_param)) !=0)
343 if(append_comp_param(mbuf, &(params->compr_param)) !=0)
347 return append_iq_samples(mbuf, iq_data_start, iq_data_num_bytes,
348 (*iq_data_offset), alignment);
352 * @brief Function for extracting all IQ samples from xRAN packet
353 * holding a single data section
354 * @param iq_data_start Address of the first element in IQ data array.
355 * @param symb_id Symbol ID to be extracted from ecpri header
356 * @param seq_id Sequence ID to be extracted from radio header
357 * @return int Size of remaining mbuf filled with IQ samples
360 int xran_extract_iq_samples(struct rte_mbuf *mbuf,
361 void **iq_data_start,
365 uint8_t *subframe_id,
368 struct ecpri_seq_id *seq_id,
370 uint16_t *start_prbu,
376 uint32_t mlogVar[10];
377 uint32_t mlogVarCnt = 0;
379 struct xran_eaxc_info result;
383 if (NULL == iq_data_start)
386 /* Process eCPRI header. */
387 const struct xran_ecpri_hdr *ecpri_hdr = rte_pktmbuf_mtod(mbuf, void *);
388 if (ecpri_hdr == NULL)
392 *seq_id = ecpri_hdr->ecpri_seq_id;
394 xran_decompose_cid((uint16_t)ecpri_hdr->ecpri_xtc_id, &result);
396 *CC_ID = result.ccId;
397 *Ant_ID = result.ruPortId;
399 /* Process radio header. */
400 struct radio_app_common_hdr *radio_hdr =
401 (void *)rte_pktmbuf_adj(mbuf, sizeof(*ecpri_hdr));
402 if (radio_hdr == NULL)
403 return 0; /* packet too short */
405 radio_hdr->sf_slot_sym.value = rte_be_to_cpu_16(radio_hdr->sf_slot_sym.value);
408 *frame_id = radio_hdr->frame_id;
411 *subframe_id = radio_hdr->sf_slot_sym.subframe_id;
414 *slot_id = radio_hdr->sf_slot_sym.slot_id;
417 *symb_id = radio_hdr->sf_slot_sym.symb_id;
419 /* Process data section hdr */
420 struct data_section_hdr *data_hdr =
421 (void *)rte_pktmbuf_adj(mbuf, sizeof(*radio_hdr));
422 if (data_hdr == NULL)
423 return 0; /* packet too short */
426 data_hdr->fields.all_bits = rte_be_to_cpu_32(data_hdr->fields.all_bits);
428 *num_prbu = data_hdr->fields.num_prbu;
429 *start_prbu = data_hdr->fields.start_prbu;
430 *sym_inc = data_hdr->fields.sym_inc;
431 *rb = data_hdr->fields.rb;
432 *sect_id = data_hdr->fields.sect_id;
435 const struct data_section_compression_hdr *data_compr_hdr =
436 (void *) rte_pktmbuf_adj(mbuf, sizeof(*data_hdr));
438 const uint8_t *compr_param =
439 (void *)rte_pktmbuf_adj(mbuf, sizeof(*data_compr_hdr));
441 *iq_data_start = rte_pktmbuf_adj(mbuf, sizeof(*compr_param));
444 *iq_data_start = rte_pktmbuf_adj(mbuf, sizeof(*data_hdr));
446 if (*iq_data_start == NULL)
450 mlogVar[mlogVarCnt++] = 0xBBBBBBBB;
451 mlogVar[mlogVarCnt++] = xran_lib_ota_tti;
452 mlogVar[mlogVarCnt++] = radio_hdr->frame_id;
453 mlogVar[mlogVarCnt++] = radio_hdr->sf_slot_sym.subframe_id;
454 mlogVar[mlogVarCnt++] = radio_hdr->sf_slot_sym.slot_id;
455 mlogVar[mlogVarCnt++] = radio_hdr->sf_slot_sym.symb_id;
456 mlogVar[mlogVarCnt++] = data_hdr->fields.sect_id;
457 mlogVar[mlogVarCnt++] = data_hdr->fields.start_prbu;
458 mlogVar[mlogVarCnt++] = data_hdr->fields.num_prbu;
459 mlogVar[mlogVarCnt++] = rte_pktmbuf_pkt_len(mbuf);
460 MLogAddVariables(mlogVarCnt, mlogVar, MLogTick());
463 return rte_pktmbuf_pkt_len(mbuf);
467 * @brief Function for starting preparion of IQ samples portions
468 * to be sent in xRAN packet
470 * @param mbuf Initialized rte_mbuf packet.
471 * @param iq_data_start Address of the first element in IQ data array.
472 * @param iq_data_num_bytes Size of the IQ data array.
473 * @param iq_data_offset IQ data bytes already sent.
474 * @param alignment Size of IQ data alignment.
475 * @param pkt_gen_params Struct with parameters used for building packet
476 * @return int Number of bytes that have been appended
477 to the packet within all appended sections.
479 int xran_prepare_iq_symbol_portion_no_comp(
480 struct rte_mbuf *mbuf,
481 const void *iq_data_start,
482 const enum xran_input_byte_order iq_buf_byte_order,
483 const uint32_t iq_data_num_bytes,
484 struct xran_up_pkt_gen_no_compression_params *params,
490 if(xran_build_ecpri_hdr_ex(mbuf,
496 print_err("xran_build_ecpri_hdr_ex return 0\n");
500 if (build_application_layer(mbuf, &(params->app_params)) != 0){
501 print_err("build_application_layer return != 0\n");
505 if (build_section_hdr(mbuf, &(params->sec_hdr)) != 0){
506 print_err("build_section_hdr return != 0\n");
510 return append_iq_samples_ex(mbuf, iq_data_start, iq_data_num_bytes, iq_buf_byte_order, do_copy);