IuPS: track msg->dst aka ue_conn_ctx, comment
For Iu connections, msg->dst will point to the ue_conn_ctx, and we need to make
sure to keep msg->dst intact when copying from/to msgb and from/to MM context.
Change-Id: I90c7ca6c3655d447aaca958e0086ae6ce6f6045a
diff --git a/openbsc/src/gprs/gprs_gmm.c b/openbsc/src/gprs/gprs_gmm.c
index efa25c6..1efada9 100644
--- a/openbsc/src/gprs/gprs_gmm.c
+++ b/openbsc/src/gprs/gprs_gmm.c
@@ -150,6 +150,7 @@
msgb_tlli(msg) = msgb_tlli(old);
msgb_bvci(msg) = msgb_bvci(old);
msgb_nsei(msg) = msgb_nsei(old);
+ msg->dst = old->dst;
}
/* Store BVCI/NSEI in MM context */
@@ -157,6 +158,8 @@
{
mm->gb.bvci = msgb_bvci(msg);
mm->gb.nsei = msgb_nsei(msg);
+ /* In case a Iu connection is reconnected we need to update the ue ctx */
+ mm->iu.ue_ctx = msg->dst;
}
/* Store BVCI/NSEI in MM context */
@@ -165,6 +168,7 @@
msgb_tlli(msg) = mm->gb.tlli;
msgb_bvci(msg) = mm->gb.bvci;
msgb_nsei(msg) = mm->gb.nsei;
+ msg->dst = mm->iu.ue_ctx;
}
static void mm_ctx_cleanup_free(struct sgsn_mm_ctx *ctx, const char *log_text)