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gb: add bssgp2_enc_flush_ll encode FLUSH-LL 

Change-Id: I76dc3b08a63cfd78c9f7657fb58c2ddfa9b4b7e2
changes/07/29507/3
Alexander Couzens 2022-09-28 16:22:29 +02:00
parent 70093f23ad
commit 71ad530f7e
3 changed files with 32 additions and 0 deletions
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2
include/osmocom/gprs/gprs_bssgp2.h
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@ -59,6 +59,8 @@ struct msgb *bssgp2_enc_bvc_reset(uint16_t bvci, enum gprs_bssgp_cause cause,
struct msgb *bssgp2_enc_bvc_reset_ack(uint16_t bvci, const struct gprs_ra_id *ra_id, uint16_t cell_id,
const uint8_t *feat_bm, const uint8_t *ext_feat_bm);
struct msgb *bssgp2_enc_flush_ll(uint32_t tlli, uint16_t old_bvci,
const uint16_t *new_bvci, const uint16_t *nsei);
struct msgb *bssgp2_enc_status(uint8_t cause, const uint16_t *bvci, const struct msgb *orig_msg, uint16_t max_pdu_len);

29
src/gb/gprs_bssgp2.c
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@ -349,6 +349,35 @@ struct msgb *bssgp2_enc_fc_bvc(const struct bssgp2_flow_ctrl *fc, enum bssgp_fc_
return msg;
}
/*! Encode BSSGP FLUSH-LL PDU as per TS 48.018 Section 10.4.1.
* \param[in] tlli - the TLLI of the MS
* \param[in] old_bvci BVCI
* \param[in] new_bvci2 optional BVCI - only encoded if non-NULL
* \param[in] nsei optional - only encoded if non-NULL
* \returns encoded PDU or NULL in case of error */
struct msgb *bssgp2_enc_flush_ll(uint32_t tlli, uint16_t old_bvci,
const uint16_t *new_bvci, const uint16_t *nsei)
{
struct msgb *msg = bssgp_msgb_alloc();
struct bssgp_normal_hdr *bgph;
if (!msg)
return NULL;
bgph = (struct bssgp_normal_hdr *) msgb_put(msg, sizeof(*bgph));
bgph->pdu_type = BSSGP_PDUT_FLUSH_LL;
msgb_tvlv_put_32be(msg, BSSGP_IE_TLLI, tlli);
msgb_tvlv_put_16be(msg, BSSGP_IE_BVCI, old_bvci);
if (new_bvci)
msgb_tvlv_put_16be(msg, BSSGP_IE_BVCI, *new_bvci);
if (nsei)
msgb_tvlv_put_16be(msg, BSSGP_IE_BVCI, *nsei);
return msg;
}
/*! Encode a FLOW-CONTROL-BVC-ACK PDU as per TS 48.018 Section 10.4.4.
* \param[in] tag the tag IE value to encode
* \returns encoded PDU or NULL in case of error */

1
src/gb/libosmogb.map
View File

@ -85,6 +85,7 @@ bssgp2_enc_fc_bvc;
bssgp2_enc_fc_bvc_ack;
bssgp2_enc_fc_ms;
bssgp2_enc_fc_ms_ack;
bssgp2_enc_flush_ll;
bssgp2_enc_status;
bssgp_bvc_fsm_alloc_sig_bss;