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authorAlexander Couzens <lynxis@fe80.eu>2019-08-12 18:29:57 +0200
committerlaforge <laforge@gnumonks.org>2019-09-02 08:59:43 +0000
commitc44af53d1e4c56de41b53ee13a5a72b440640e52 (patch)
treeeeea3c1f4b4de045955626655bf2be267fd157d0
parentf8d3e7fe05ae854e4ab2105d6a8bd1fe10ea9d18 (diff)
gprs_gmm: clarify comment of Iu follow-on request
-rw-r--r--src/gprs/gprs_gmm.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/src/gprs/gprs_gmm.c b/src/gprs/gprs_gmm.c
index d2321562..185cd9ad 100644
--- a/src/gprs/gprs_gmm.c
+++ b/src/gprs/gprs_gmm.c
@@ -1404,7 +1404,11 @@ static int gsm48_rx_gmm_att_req(struct sgsn_mm_ctx *ctx, struct msgb *msg,
goto err_inval;
cur += msnc_len;
- /* TODO: In iu mode - handle follow-on request */
+ /* TODO: In iu mode - handle follow-on request.
+ * The follow-on request can be signaled in an Attach Request on IuPS.
+ * This means the MS/UE asks to keep the PS connection open for further requests
+ * after the Attach Request succeed.
+ * The SGSN can decide if it close the connection or not. Both are spec conform. */
/* aTTACH Type 10.5.5.2 */
att_type = *cur++ & 0x07;
@@ -1742,7 +1746,11 @@ static int gsm48_rx_gmm_ra_upd_req(struct sgsn_mm_ctx *mmctx, struct msgb *msg,
enum gsm48_gmm_cause reject_cause = GMM_CAUSE_PROTO_ERR_UNSPEC;
int rc;
- /* TODO: In iu mode - handle follow-on request */
+ /* TODO: In iu mode - handle follow-on request.
+ * The follow-on request can be signaled in an Attach Request on IuPS.
+ * This means the MS/UE asks to keep the PS connection open for further requests
+ * after the Attach Request succeed.
+ * The SGSN can decide if it close the connection or not. Both are spec conform. */
/* Update Type 10.5.5.18 */
upd_type = *cur++ & 0x07;