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osmo-hnodeb
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Free UE contexts when starting shutdown procedure 

They are not valid anymore since the Iuh conn is closed.
If kept alive, then if GTP/RTP traffic comes from CN while shutting down
the payloads may be forwarded to LLSK which may have been closed (eg.
because shutdown procedure was started precisely due to death LLSK
because other end closed it).

Related: OS#6826
Change-Id: I51aa449e7fd5b1049fcaaeef3f1378423a838c05
This commit is contained in:
Pau Espin 2024-03-12 18:03:10 +01:00
parent ab8db8fabd
commit b04885005b
1 changed files with 7 additions and 1 deletions
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8
src/osmo-hnodeb/hnb_shutdown_fsm.c
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@ -45,12 +45,18 @@ static void st_none_on_enter(struct osmo_fsm_inst *fi, uint32_t prev_state)
static void st_none(struct osmo_fsm_inst *fi, uint32_t event, void *data)
{
struct hnb *hnb = (struct hnb *)fi->priv;
struct hnb_ue *ue, *ue_tmp;
switch (event) {
case HNB_SHUTDOWN_EV_START:
/* TODO: here we may want to communicate to lower layers over UDsocket that we are shutting down...
* TODO: Also, if Iuh link is still up, maybe send a Hnb deregister req towards HNBGW
* TODO: also signal the hnb object somehow that we are starting to shut down?
*/
/* Drop active UE contexts, together with their GTP/AUDIO sessions: */
llist_for_each_entry_safe(ue, ue_tmp, &hnb->ue_list, list)
hnb_ue_free(ue);
if (osmo_stream_cli_is_connected(hnb->iuh.client))
osmo_stream_cli_close(hnb->iuh.client);