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Harald Welte gerrit-no-reply at lists.osmocom.orgHarald Welte has submitted this change and it was merged. ( https://gerrit.osmocom.org/11679 )
Change subject: Move msgb_push helpers to public header
......................................................................
Move msgb_push helpers to public header
The msgb_wrap_with_TL() is generally useful so it make sense to make it
public to facilitate code re-use.
Other helpers can be implemented as trivial wrappers over existing tlv.h
functions. Update headers and code accordingly.
Change-Id: I37e91d031fba28cf1c6735b8069b0265746f55e6
---
M include/osmocom/core/msgb.h
M include/osmocom/gsm/tlv.h
M src/gsm/gsm0480.c
3 files changed, 25 insertions(+), 39 deletions(-)
Approvals:
Harald Welte: Looks good to me, approved
Jenkins Builder: Verified
diff --git a/include/osmocom/core/msgb.h b/include/osmocom/core/msgb.h
index 8843db0..2449151 100644
--- a/include/osmocom/core/msgb.h
+++ b/include/osmocom/core/msgb.h
@@ -366,6 +366,15 @@
osmo_store32be(word, space);
}
+static inline unsigned char *msgb_wrap_with_TL(struct msgb *msgb, uint8_t tag)
+{
+ uint8_t *data = msgb_push(msgb, 2);
+
+ data[0] = tag;
+ data[1] = msgb->len - 2;
+ return data;
+}
+
/*! remove (pull) a header from the front of the message buffer
* \param[in] msgb message buffer
* \param[in] len number of octets to be pulled
diff --git a/include/osmocom/gsm/tlv.h b/include/osmocom/gsm/tlv.h
index 84fd511..1ab964a 100644
--- a/include/osmocom/gsm/tlv.h
+++ b/include/osmocom/gsm/tlv.h
@@ -341,6 +341,12 @@
return buf;
}
+/*! push 1-byte tagged value */
+static inline uint8_t *msgb_tlv1_push(struct msgb *msg, uint8_t tag, uint8_t val)
+{
+ return msgb_tlv_push(msg, tag, 1, &val);
+}
+
/*! push (prepend) a TV field to a \ref msgb
* \returns pointer to first byte of newly-pushed information */
static inline uint8_t *msgb_tv_push(struct msgb *msg, uint8_t tag, uint8_t val)
diff --git a/src/gsm/gsm0480.c b/src/gsm/gsm0480.c
index 7756ecb..021db62 100644
--- a/src/gsm/gsm0480.c
+++ b/src/gsm/gsm0480.c
@@ -68,35 +68,6 @@
{ 0, NULL }
};
-static inline unsigned char *msgb_wrap_with_TL(struct msgb *msgb, uint8_t tag)
-{
- uint8_t *data = msgb_push(msgb, 2);
-
- data[0] = tag;
- data[1] = msgb->len - 2;
- return data;
-}
-
-static inline unsigned char *msgb_push_TLV1(struct msgb *msgb, uint8_t tag,
- uint8_t value)
-{
- uint8_t *data = msgb_push(msgb, 3);
-
- data[0] = tag;
- data[1] = 1;
- data[2] = value;
- return data;
-}
-
-static inline unsigned char *msgb_push_NULL(struct msgb *msgb)
-{
- uint8_t *data = msgb_push(msgb, 2);
-
- data[0] = ASN1_NULL_TYPE_TAG;
- data[1] = 0;
- return data;
-}
-
/* wrap an invoke around it... the other way around
*
* 1.) Invoke Component tag
@@ -107,10 +78,10 @@
int gsm0480_wrap_invoke(struct msgb *msg, int op, int link_id)
{
/* 3. operation */
- msgb_push_TLV1(msg, GSM0480_OPERATION_CODE, op);
+ msgb_tlv1_push(msg, GSM0480_OPERATION_CODE, op);
/* 2. invoke id tag */
- msgb_push_TLV1(msg, GSM0480_COMPIDTAG_INVOKE_ID, link_id);
+ msgb_tlv1_push(msg, GSM0480_COMPIDTAG_INVOKE_ID, link_id);
/* 1. component tag */
msgb_wrap_with_TL(msg, GSM0480_CTYPE_INVOKE);
@@ -825,20 +796,20 @@
msgb_wrap_with_TL(msg, ASN1_OCTET_STRING_TAG);
/* Pre-pend the DCS octet string */
- msgb_push_TLV1(msg, ASN1_OCTET_STRING_TAG, 0x0F);
+ msgb_tlv1_push(msg, ASN1_OCTET_STRING_TAG, 0x0F);
/* Then wrap these as a Sequence */
msgb_wrap_with_TL(msg, GSM_0480_SEQUENCE_TAG);
/* Pre-pend the operation code */
- msgb_push_TLV1(msg, GSM0480_OPERATION_CODE,
+ msgb_tlv1_push(msg, GSM0480_OPERATION_CODE,
GSM0480_OP_CODE_PROCESS_USS_REQ);
/* Wrap the operation code and IA5 string as a sequence */
msgb_wrap_with_TL(msg, GSM_0480_SEQUENCE_TAG);
/* Pre-pend the invoke ID */
- msgb_push_TLV1(msg, GSM0480_COMPIDTAG_INVOKE_ID, invoke_id);
+ msgb_tlv1_push(msg, GSM0480_COMPIDTAG_INVOKE_ID, invoke_id);
/* Wrap this up as a Return Result component */
msgb_wrap_with_TL(msg, GSM0480_CTYPE_RETURN_RESULT);
@@ -889,10 +860,10 @@
return NULL;
/* First insert the problem code */
- msgb_push_TLV1(msg, GSM_0480_ERROR_CODE_TAG, error_code);
+ msgb_tlv1_push(msg, GSM_0480_ERROR_CODE_TAG, error_code);
/* Before it, insert the invoke ID */
- msgb_push_TLV1(msg, GSM0480_COMPIDTAG_INVOKE_ID, invoke_id);
+ msgb_tlv1_push(msg, GSM0480_COMPIDTAG_INVOKE_ID, invoke_id);
/* Wrap this up as a Reject component */
msgb_wrap_with_TL(msg, GSM0480_CTYPE_RETURN_ERROR);
@@ -919,13 +890,13 @@
return NULL;
/* First insert the problem code */
- msgb_push_TLV1(msg, problem_tag, problem_code);
+ msgb_tlv1_push(msg, problem_tag, problem_code);
/* If the Invoke ID is not available, Universal NULL (table 3.9) with length=0 shall be used */
if (invoke_id < 0 || invoke_id > 255)
- msgb_push_NULL(msg);
+ msgb_tv_push(msg, ASN1_NULL_TYPE_TAG, 0);
else
- msgb_push_TLV1(msg, GSM0480_COMPIDTAG_INVOKE_ID, invoke_id);
+ msgb_tlv1_push(msg, GSM0480_COMPIDTAG_INVOKE_ID, invoke_id);
/* Wrap this up as a Reject component */
msgb_wrap_with_TL(msg, GSM0480_CTYPE_REJECT);
--
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Gerrit-Project: libosmocore
Gerrit-Branch: master
Gerrit-MessageType: merged
Gerrit-Change-Id: I37e91d031fba28cf1c6735b8069b0265746f55e6
Gerrit-Change-Number: 11679
Gerrit-PatchSet: 3
Gerrit-Owner: Max <msuraev at sysmocom.de>
Gerrit-Reviewer: Harald Welte <laforge at gnumonks.org>
Gerrit-Reviewer: Jenkins Builder (1000002)
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