Change in ...osmo-sgsn[master]: Introduce define TLLI_UNASSIGNED

pespin gerrit-no-reply at lists.osmocom.org
Tue Aug 13 09:54:03 UTC 2019


pespin has submitted this change and it was merged. ( https://gerrit.osmocom.org/c/osmo-sgsn/+/15165 )

Change subject: Introduce define TLLI_UNASSIGNED
......................................................................

Introduce define TLLI_UNASSIGNED

Change-Id: Ib8be5af2a5e92a7403505b73ce4c1751832de40d
---
M include/osmocom/sgsn/gprs_llc.h
M src/gprs/gprs_gmm.c
M src/gprs/gprs_llc.c
M src/gprs/gprs_sgsn.c
4 files changed, 18 insertions(+), 15 deletions(-)

Approvals:
  Jenkins Builder: Verified
  lynxis lazus: Looks good to me, approved



diff --git a/include/osmocom/sgsn/gprs_llc.h b/include/osmocom/sgsn/gprs_llc.h
index 5b12248..8a0b9ef 100644
--- a/include/osmocom/sgsn/gprs_llc.h
+++ b/include/osmocom/sgsn/gprs_llc.h
@@ -192,6 +192,9 @@
 
 #define GPRS_LLME_RESET_AGE (0)
 
+/* 3GPP TS 44.064 § 8.3 TLLI assignment procedures */
+#define TLLI_UNASSIGNED (0xffffffff)
+
 extern struct llist_head gprs_llc_llmes;
 
 /* LLC low level types */
diff --git a/src/gprs/gprs_gmm.c b/src/gprs/gprs_gmm.c
index 5a6ea28..c8bc0f7 100644
--- a/src/gprs/gprs_gmm.c
+++ b/src/gprs/gprs_gmm.c
@@ -2077,7 +2077,7 @@
 			/* Unassign the old TLLI */
 			mmctx->gb.tlli = mmctx->gb.tlli_new;
 			gprs_llme_copy_key(mmctx, mmctx->gb.llme);
-			gprs_llgmm_assign(mmctx->gb.llme, 0xffffffff,
+			gprs_llgmm_assign(mmctx->gb.llme, TLLI_UNASSIGNED,
 					  mmctx->gb.tlli_new);
 		}
 		mmctx->gmm_state = GMM_REGISTERED_NORMAL;
@@ -2102,7 +2102,7 @@
 		if (mmctx->ran_type == MM_CTX_T_GERAN_Gb) {
 			/* Unassign the old TLLI */
 			mmctx->gb.tlli = mmctx->gb.tlli_new;
-			gprs_llgmm_assign(mmctx->gb.llme, 0xffffffff,
+			gprs_llgmm_assign(mmctx->gb.llme, TLLI_UNASSIGNED,
 					  mmctx->gb.tlli_new);
 		}
 		mmctx->gmm_state = GMM_REGISTERED_NORMAL;
@@ -2125,7 +2125,7 @@
 		if (mmctx->ran_type == MM_CTX_T_GERAN_Gb) {
 			/* Unassign the old TLLI */
 			mmctx->gb.tlli = mmctx->gb.tlli_new;
-			//gprs_llgmm_assign(mmctx->gb.llme, 0xffffffff, mmctx->gb.tlli_new, GPRS_ALGO_GEA0, NULL);
+			//gprs_llgmm_assign(mmctx->gb.llme, TLLI_UNASSIGNED, mmctx->gb.tlli_new, GPRS_ALGO_GEA0, NULL);
 		}
 		rc = 0;
 		break;
diff --git a/src/gprs/gprs_llc.c b/src/gprs/gprs_llc.c
index acf4b54..a301a63 100644
--- a/src/gprs/gprs_llc.c
+++ b/src/gprs/gprs_llc.c
@@ -527,7 +527,7 @@
 		lle = &llme->lle[sapi];
 		return lle;
 	}
-	
+
 	LOGP(DLLC, LOGL_NOTICE,
 		"unknown TLLI(0x%08x)/SAPI(%d): Silently dropping\n",
 		tlli, sapi);
@@ -556,7 +556,7 @@
 		return NULL;
 
 	llme->tlli = tlli;
-	llme->old_tlli = 0xffffffff;
+	llme->old_tlli = TLLI_UNASSIGNED;
 	llme->state = GPRS_LLMS_UNASSIGNED;
 	llme->age_timestamp = GPRS_LLME_RESET_AGE;
 	llme->cksn = GSM_KEY_SEQ_INVAL;
@@ -1042,19 +1042,19 @@
 {
 	unsigned int i;
 
-	if (old_tlli == 0xffffffff && new_tlli != 0xffffffff) {
+	if (old_tlli == TLLI_UNASSIGNED && new_tlli != TLLI_UNASSIGNED) {
 		/* TLLI Assignment 8.3.1 */
 		/* New TLLI shall be assigned and used when (re)transmitting LLC frames */
-		/* If old TLLI != 0xffffffff was assigned to LLME, then TLLI
+		/* If old TLLI != TLLI_UNASSIGNED was assigned to LLME, then TLLI
 		 * old is unassigned.  Only TLLI new shall be accepted when
 		 * received from peer. */
-		if (llme->old_tlli != 0xffffffff) {
-			llme->old_tlli = 0xffffffff;
+		if (llme->old_tlli != TLLI_UNASSIGNED) {
+			llme->old_tlli = TLLI_UNASSIGNED;
 			llme->tlli = new_tlli;
 		} else {
-			/* If TLLI old == 0xffffffff was assigned to LLME, then this is
+			/* If TLLI old == TLLI_UNASSIGNED was assigned to LLME, then this is
 			 * TLLI assignmemt according to 8.3.1 */
-			llme->old_tlli = 0xffffffff;
+			llme->old_tlli = TLLI_UNASSIGNED;
 			llme->tlli = new_tlli;
 			llme->state = GPRS_LLMS_ASSIGNED;
 			/* 8.5.3.1 For all LLE's */
@@ -1066,14 +1066,14 @@
 				/* FIXME Set parameters according to table 9 */
 			}
 		}
-	} else if (old_tlli != 0xffffffff && new_tlli != 0xffffffff) {
+	} else if (old_tlli != TLLI_UNASSIGNED && new_tlli != TLLI_UNASSIGNED) {
 		/* TLLI Change 8.3.2 */
 		/* Both TLLI Old and TLLI New are assigned; use New when
 		 * (re)transmitting.  Accept both Old and New on Rx */
 		llme->old_tlli = old_tlli;
 		llme->tlli = new_tlli;
 		llme->state = GPRS_LLMS_ASSIGNED;
-	} else if (old_tlli != 0xffffffff && new_tlli == 0xffffffff) {
+	} else if (old_tlli != TLLI_UNASSIGNED && new_tlli == TLLI_UNASSIGNED) {
 		/* TLLI Unassignment 8.3.3) */
 		llme->tlli = llme->old_tlli = 0;
 		llme->state = GPRS_LLMS_UNASSIGNED;
@@ -1091,7 +1091,7 @@
 /* TLLI unassignment */
 int gprs_llgmm_unassign(struct gprs_llc_llme *llme)
 {
-	return gprs_llgmm_assign(llme, llme->tlli, 0xffffffff);
+	return gprs_llgmm_assign(llme, llme->tlli, TLLI_UNASSIGNED);
 }
 
 /* Chapter 7.2.1.2 LLGMM-RESET.req */
diff --git a/src/gprs/gprs_sgsn.c b/src/gprs/gprs_sgsn.c
index 9a5de41..e01bc5c 100644
--- a/src/gprs/gprs_sgsn.c
+++ b/src/gprs/gprs_sgsn.c
@@ -362,7 +362,7 @@
 
 	if (llme) {
 		/* TLLI unassignment, must be called after sgsn_mm_ctx_free */
-		gprs_llgmm_assign(llme, tlli, 0xffffffff);
+		gprs_llgmm_assign(llme, tlli, TLLI_UNASSIGNED);
 	}
 }
 

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Gerrit-Project: osmo-sgsn
Gerrit-Branch: master
Gerrit-Change-Id: Ib8be5af2a5e92a7403505b73ce4c1751832de40d
Gerrit-Change-Number: 15165
Gerrit-PatchSet: 1
Gerrit-Owner: pespin <pespin at sysmocom.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: lynxis lazus <lynxis at fe80.eu>
Gerrit-Reviewer: pespin <pespin at sysmocom.de>
Gerrit-MessageType: merged
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