IuPS: Change GTP-U endpoint to SGSN in PMM_IDLE and page UE when data arrives

Change-Id: I47b73a40cbdda6b7c31fb2767f74f9f93d84056b
This commit is contained in:
Daniel Willmann 2016-05-11 12:43:47 +02:00 committed by Neels Hofmeyr
parent c17cdb40b5
commit 21b269f814
3 changed files with 32 additions and 1 deletions

View File

@ -138,6 +138,7 @@ struct sgsn_pdp_ctx *sgsn_create_pdp_ctx(struct sgsn_ggsn_ctx *ggsn,
uint16_t nsapi,
struct tlv_parsed *tp);
int sgsn_delete_pdp_ctx(struct sgsn_pdp_ctx *pctx);
void sgsn_pdp_upd_gtp_u(struct sgsn_pdp_ctx *pdp, void *addr, size_t alen);
/* gprs_sndcp.c */

View File

@ -109,6 +109,16 @@ static const struct tlv_definition gsm48_sm_att_tlvdef = {
static int gsm48_gmm_authorize(struct sgsn_mm_ctx *ctx);
static void mmctx_change_gtpu_endpoints_to_sgsn(struct sgsn_mm_ctx *mm_ctx)
{
struct sgsn_pdp_ctx *pdp;
llist_for_each_entry(pdp, &mm_ctx->pdp_list, list) {
sgsn_pdp_upd_gtp_u(pdp,
&sgsn->cfg.gtp_listenaddr.sin_addr,
sizeof(sgsn->cfg.gtp_listenaddr.sin_addr));
}
}
void mmctx_set_pmm_state(struct sgsn_mm_ctx *ctx, enum gprs_pmm_state state)
{
if (ctx->pmm_state == state)
@ -120,7 +130,8 @@ void mmctx_set_pmm_state(struct sgsn_mm_ctx *ctx, enum gprs_pmm_state state)
{
switch (state) {
case PMM_IDLE:
/* TODO: Change GTP-U endpoints to SGSN, start RA Upd timer */
/* TODO: start RA Upd timer */
mmctx_change_gtpu_endpoints_to_sgsn(ctx);
break;
case PMM_CONNECTED:
break;

View File

@ -401,6 +401,13 @@ reject:
return EOF;
}
void sgsn_pdp_upd_gtp_u(struct sgsn_pdp_ctx *pdp, void *addr, size_t alen)
{
pdp->lib->gsnlu.l = alen;
memcpy(pdp->lib->gsnlu.v, addr, alen);
gtp_update_context(pdp->ggsn->gsn, pdp->lib, pdp, &pdp->lib->hisaddr0);
}
#ifdef BUILD_IU
/* Callback for RAB assignment response */
int sgsn_ranap_rab_ass_resp(struct sgsn_mm_ctx *ctx, RANAP_RAB_SetupOrModifiedItemIEs_t *setup_ies)
@ -621,6 +628,18 @@ static int cb_data_ind(struct pdp_t *lib, void *packet, unsigned int len)
return -EIO;
}
if (mm->ran_type == MM_CTX_T_UTRAN_Iu) {
#ifdef BUILD_IU
/* Ignore the packet for now and page the UE to get the RAB
* reestablished */
iu_page_ps(mm->imsi, &mm->p_tmsi, mm->ra.lac, mm->ra.rac);
return 0;
#else
return -ENOTSUP;
#endif
}
msg = msgb_alloc_headroom(len+256, 128, "GTP->SNDCP");
ud = msgb_put(msg, len);
memcpy(ud, packet, len);