Add SDU length for an NSE (== BSSGP PDU size)
Prepare tracking the SDU from NS. Initialize with a conservative default. The value is not yet updated, that will happen in a later patch. Related: OS#4889 Depends: I5016b295db6185ec131d83089cf6c806e34ef1b6 (libosmocore.git) Depends: I9bb82ead27366b7370c9ff968e03ca2113ec11f0 (libosmocore.git) Change-Id: Ic1080abde942ec5a2ae7cdee0ffe716a2fbddb1e
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@ -11,6 +11,7 @@
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#include <osmocom/gsm/gsm48.h>
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#include <osmocom/gsm/protocol/gsm_23_003.h>
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#include <osmocom/gprs/frame_relay.h>
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#include <osmocom/gprs/gprs_ns2.h>
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#include <osmocom/vty/command.h>
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@ -21,6 +22,9 @@
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#define GBPROXY_INIT_VU_GEN_TX 256
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#define GBPROXY_MAX_NR_SGSN 16
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/* Set conservative default BSSGP SDU (FR SDU - size of NS UNITDATA IEs) */
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#define DEFAULT_NSE_SDU (FRAME_RELAY_SDU - 4)
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/* BVCI uses 16 bits */
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#define BVC_LOG_CTX_FLAG (1<<17)
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@ -161,6 +165,9 @@ struct gbproxy_nse {
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/* NSEI of the NSE */
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uint16_t nsei;
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/* Maximum side of the NS-UNITDATA NS SDU that can be transported by the NSE */
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uint16_t max_sdu_len;
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/* Are we facing towards a SGSN (true) or BSS (false) */
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bool sgsn_facing;
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@ -684,6 +684,7 @@ static void bss_ptp_bvc_reset_notif(uint16_t nsei, uint16_t bvci, const struct g
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sgsn_bvc->fi = bssgp_bvc_fsm_alloc_ptp_bss(sgsn_bvc, cfg->nsi, sgsn_nse->nsei,
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bvci, ra_id, cell_id);
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OSMO_ASSERT(sgsn_bvc->fi);
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bssgp_bvc_fsm_set_max_pdu_len(sgsn_bvc->fi, sgsn_nse->max_sdu_len);
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bssgp_bvc_fsm_set_ops(sgsn_bvc->fi, &sgsn_ptp_bvc_fsm_ops, sgsn_bvc);
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gbproxy_cell_add_sgsn_bvc(bvc->cell, sgsn_bvc);
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@ -828,6 +829,7 @@ static int rx_bvc_reset_from_bss(struct gbproxy_nse *nse, struct msgb *msg, stru
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gbproxy_bvc_free(from_bvc);
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return -ENOMEM;
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}
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bssgp_bvc_fsm_set_max_pdu_len(from_bvc->fi, nse->max_sdu_len);
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bssgp_bvc_fsm_set_ops(from_bvc->fi, &bss_sig_bvc_fsm_ops, from_bvc);
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}
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} else {
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@ -844,6 +846,7 @@ static int rx_bvc_reset_from_bss(struct gbproxy_nse *nse, struct msgb *msg, stru
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gbproxy_bvc_free(from_bvc);
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return -ENOMEM;
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}
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bssgp_bvc_fsm_set_max_pdu_len(from_bvc->fi, nse->max_sdu_len);
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bssgp_bvc_fsm_set_ops(from_bvc->fi, &bss_ptp_bvc_fsm_ops, from_bvc);
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}
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#if 0
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@ -1500,6 +1503,7 @@ void gprs_ns_prim_status_cb(struct gbproxy_config *cfg, struct osmo_gprs_ns2_pri
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{
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/* TODO: bss nsei available/unavailable bssgp_tx_simple_bvci(BSSGP_PDUT_BVC_BLOCK, nsvc->nsei, bvc->bvci, 0);
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* TODO: sgsn nsei available/unavailable
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* TODO: Update MTU
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*/
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struct gbproxy_bvc *bvc;
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@ -447,6 +447,7 @@ struct gbproxy_nse *gbproxy_nse_alloc(struct gbproxy_config *cfg, uint16_t nsei,
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return NULL;
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nse->nsei = nsei;
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nse->max_sdu_len = DEFAULT_NSE_SDU;
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nse->cfg = cfg;
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nse->sgsn_facing = sgsn_facing;
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@ -241,6 +241,7 @@ DEFUN(cfg_sgsn_nsei,
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bvc->fi = bssgp_bvc_fsm_alloc_sig_bss(bvc, nse->cfg->nsi, nsei, features);
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if (!bvc->fi)
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goto free_bvc;
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bssgp_bvc_fsm_set_max_pdu_len(bvc->fi, nse->max_sdu_len);
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bssgp_bvc_fsm_set_ops(bvc->fi, &sgsn_sig_bvc_fsm_ops, bvc);
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osmo_fsm_inst_dispatch(bvc->fi, BSSGP_BVCFSM_E_REQ_RESET, &cause);
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}
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