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TLV: add TLVP_PRES_LEN() definition to check for existance + minimum length 

This is an import from osmo-bts where it was introduced in
6b561bb7ba5f10c5fd96542a7e42de2822352a67
This commit is contained in:
Harald Welte 2014-08-18 15:31:04 +02:00
parent 900e180f91
commit cc27fa6479
1 changed files with 3 additions and 0 deletions
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3
include/osmocom/gsm/tlv.h
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@ -409,6 +409,9 @@ void tlv_def_patch(struct tlv_definition *dst, const struct tlv_definition *src)
#define TLVP_LEN(x, y) (x)->lv[y].len
#define TLVP_VAL(x, y) (x)->lv[y].val
#define TLVP_PRES_LEN(tp, tag, min_len) \
(TLVP_PRESENT(tp, tag) && TLVP_LEN(tp, tag) >= min_len)
/*! \brief Align given TLV element with 16 bit value to an even address
* \param[in] tp pointer to \ref tlv_parsed
* \param[in] pos element to return