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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
This commit is contained in:
Daniel Willmann 2016-05-21 00:11:39 +02:00 committed by Neels Hofmeyr
parent 746c7896cb
commit d75864f6f5
1 changed files with 4 additions and 0 deletions
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4
openbsc/src/gprs/gprs_gmm.c
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@ -150,6 +150,7 @@ static void gmm_copy_id(struct msgb *msg, const struct msgb *old)
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 @@ static void msgid2mmctx(struct sgsn_mm_ctx *mm, const struct msgb *msg)
{
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 @@ static void mmctx2msgid(struct msgb *msg, const struct sgsn_mm_ctx *mm)
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)